1 ----------------------------------------
2 26 September 2014. Summary of changes for version 20140926:
4 1) ACPICA kernel-resident subsystem:
6 Updated the GPIO operation region handler interface (GeneralPurposeIo).
7 In order to support GPIO Connection objects with multiple pins, along
8 with the related Field objects, the following changes to the interface
9 have been made: The Address is now defined to be the offset in bits of
10 the field unit from the previous invocation of a Connection. It can be
11 viewed as a "Pin Number Index" into the connection resource descriptor.
12 The BitWidth is the exact bit width of the field. It is usually one bit,
13 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for
14 additional information and examples.
16 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with
17 corresponding _Lxx/_Exx methods are disabled (they may have been enabled
18 by the firmware), so that they cannot fire until they are enabled via
19 AcpiUpdateAllGpes. Rafael J. Wysocki.
21 Added a new return flag for the Event/GPE status interfaces --
22 AcpiGetEventStatus and AcpiGetGpeStatus. The new
23 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or
24 GPE currently has a handler associated with it, and can thus actually
25 affect the system. Lv Zheng.
27 Example Code and Data Size: These are the sizes for the OS-independent
28 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
29 debug version of the code includes the debug output trace mechanism and
30 has a much larger code and data size.
33 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
34 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
36 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
37 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
39 2) iASL Compiler/Disassembler and Tools:
41 iASL: Fixed a memory allocation/free regression introduced in 20140828
42 that could cause the compiler to crash. This was introduced inadvertently
43 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111,
46 iASL: Removed two error messages that have been found to create false
47 positives, until they can be fixed and fully validated (ACPICA BZ 1112):
48 1) Illegal forward reference within a method
49 2) Illegal reference across two methods
51 iASL: Implemented a new option (-lm) to create a hardware mapping file
52 that summarizes all GPIO, I2C, SPI, and UART connections. This option
53 works for both the compiler and disassembler. See the iASL compiler user
54 guide for additional information and examples (section 6.4.6).
56 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to
57 version 2. This corrects the AE_BAD_HEADER exception seen on systems with
58 a version 1 RSDP. Lv Zheng ACPICA BZ 1097.
60 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode
61 unless STDIN is actually a terminal. Assists with batch-mode processing.
64 Disassembler/AcpiHelp: Added another large group of recognized _HID
68 ----------------------------------------
69 28 August 2014. Summary of changes for version 20140828:
71 1) ACPICA kernel-resident subsystem:
73 Fixed a problem related to the internal use of the Timer() operator where
74 a 64-bit divide could cause an attempted link to a double-precision math
75 library. This divide is not actually necessary, so the code was
76 restructured to eliminate it. Lv Zheng.
78 ACPI 5.1: Added support for the runtime validation of the _DSD package
79 (similar to the iASL support).
81 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the
82 SRAT table. Hanjun Guo <hanjun.guo@linaro.org>.
84 Example Code and Data Size: These are the sizes for the OS-independent
85 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
86 debug version of the code includes the debug output trace mechanism and
87 has a much larger code and data size.
90 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
91 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
93 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1
94 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
96 2) iASL Compiler/Disassembler and Tools:
98 AcpiExec: Fixed a problem on unix systems where the original terminal
99 state was not always properly restored upon exit. Seen when using the -v
100 option. ACPICA BZ 1104.
102 iASL: Fixed a problem with the validation of the ranges/length within the
103 Memory24 resource descriptor. There was a boundary condition when the
104 range was equal to the (length -1) caused by the fact that these values
105 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098
107 Disassembler: Fixed a problem with the GpioInt descriptor interrupt
109 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword
111 now supported properly.
113 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported
114 in the disassembler, data table compiler, and table template generator.
116 iASL: Added a requirement for Device() objects that one of either a _HID
117 or _ADR must exist within the scope of a Device, as per the ACPI
118 specification. Remove a similar requirement that was incorrectly in place
121 iASL: Added error detection for illegal named references within control
122 methods that would cause runtime failures. Now trapped as errors are: 1)
123 References to objects within a non-parent control method. 2) Forward
124 references (within a method) -- for control methods, AML interpreters use
125 a one-pass parse of control methods. ACPICA BZ 1008.
127 iASL: Added error checking for dependencies related to the _PSx power
128 methods. ACPICA BZ 1029.
129 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2,
131 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same
134 iASL and table compiler: Cleanup miscellaneous memory leaks by fully
135 deploying the existing object and string caches and adding new caches for
138 iASL: Split the huge parser source file into multiple subfiles to improve
139 manageability. Generation now requires the M4 macro preprocessor, which
140 is part of the Bison distribution on both unix and windows platforms.
142 AcpiSrc: Fixed and removed all extraneous warnings generated during
143 entire ACPICA source code scan and/or conversion.
146 ----------------------------------------
148 24 July 2014. Summary of changes for version 20140724:
150 The ACPI 5.1 specification has been released and is available at:
151 http://uefi.org/specs/access
154 0) ACPI 5.1 support in ACPICA:
156 ACPI 5.1 is fully supported in ACPICA as of this release.
158 New predefined names. Support includes iASL and runtime ACPICA
160 _CCA (Cache Coherency Attribute).
161 _DSD (Device-Specific Data). David Box.
163 Modifications to existing ACPI tables. Support includes headers, iASL
164 Data Table compiler, disassembler, and the template generator.
165 FADT - New fields and flags. Graeme Gregory.
166 GTDT - One new subtable and new fields. Tomasz Nowicki.
167 MADT - Two new subtables. Tomasz Nowicki.
168 PCCT - One new subtable.
171 New notification type for System Resource Affinity change events.
174 1) ACPICA kernel-resident subsystem:
176 Fixed a regression introduced in 20140627 where a fault can happen during
177 the deletion of Alias AML namespace objects. The problem affected both
178 the core ACPICA and the ACPICA tools including iASL and AcpiExec.
180 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a
181 simple mechanism to enable wake GPEs that have no associated handler or
182 control method. Rafael Wysocki.
184 Updated the AcpiEnableGpe interface to disallow the enable if there is no
185 handler or control method associated with the particular GPE. This will
186 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki.
188 Updated GPE handling and dispatch by disabling the GPE before clearing
189 the status bit for edge-triggered GPEs. Lv Zheng.
191 Added Timer() support to the AML Debug object. The current timer value is
192 now displayed with each invocation of (Store to) the debug object to
193 enable simple generation of execution times for AML code (method
194 execution for example.) ACPICA BZ 1093.
196 Example Code and Data Size: These are the sizes for the OS-independent
197 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
198 debug version of the code includes the debug output trace mechanism and
199 has a much larger code and data size.
202 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total
203 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
205 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
206 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
209 2) iASL Compiler/Disassembler and Tools:
211 Fixed an issue with the recently added local printf implementation,
212 concerning width/precision specifiers that could cause incorrect output.
213 Lv Zheng. ACPICA BZ 1094.
215 Disassembler: Added support to detect buffers that contain UUIDs and
216 disassemble them to an invocation of the ToUUID operator. Also emit
217 commented descriptions of known ACPI-related UUIDs.
219 AcpiHelp: Added support to display known ACPI-related UUIDs. New option,
220 -u. Adds three new files.
222 iASL: Update table compiler and disassembler for DMAR table changes that
223 were introduced in September 2013. With assistance by David Woodhouse.
225 ----------------------------------------
226 27 June 2014. Summary of changes for version 20140627:
228 1) ACPICA kernel-resident subsystem:
230 Formatted Output: Implemented local versions of standard formatted output
231 utilities such as printf, etc. Over time, it has been discovered that
232 there are in fact many portability issues with printf, and the addition
233 of this feature will fix/prevent these issues once and for all. Some
234 known issues are summarized below:
236 1) Output of 64-bit values is not portable. For example, UINT64 is %ull
237 for the Linux kernel and is %uI64 for some MSVC versions.
238 2) Invoking printf consistently in a manner that is portable across both
239 32-bit and 64-bit platforms is difficult at best in many situations.
240 3) The output format for pointers varies from system to system (leading
241 zeros especially), and leads to inconsistent output from ACPICA across
243 4) Certain platform-specific printf formats may conflict with ACPICA use.
244 5) If there is no local C library available, ACPICA now has local support
247 -- To address these printf issues in a complete manner, ACPICA now
248 directly implements a small subset of printf format specifiers, only
249 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
251 Implemented support for ACPICA generation within the EFI environment.
252 Initially, the AcpiDump utility is supported in the UEFI shell
253 environment. Lv Zheng.
255 Added a new external interface, AcpiLogError, to improve ACPICA
256 portability. This allows the host to redirect error messages from the
257 ACPICA utilities. Lv Zheng.
259 Added and deployed new OSL file I/O interfaces to improve ACPICA
267 There are C library implementations of these functions in the new file
268 service_layers/oslibcfs.c -- however, the functions can be implemented by
269 the local host in any way necessary. Lv Zheng.
271 Implemented a mechanism to disable/enable ACPI table checksum validation
272 at runtime. This can be useful when loading tables very early during OS
273 initialization when it may not be possible to map the entire table in
274 order to compute the checksum. Lv Zheng.
276 Fixed a buffer allocation issue for the Generic Serial Bus support.
277 Originally, a fixed buffer length was used. This change allows for
278 variable-length buffers based upon the protocol indicated by the field
279 access attributes. Reported by Lan Tianyu. Lv Zheng.
281 Fixed a problem where an object detached from a namespace node was not
282 properly terminated/cleared and could cause a circular list problem if
283 reattached. ACPICA BZ 1063. David Box.
285 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
287 Fixed a possible memory leak in an error return path within the function
288 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
290 Example Code and Data Size: These are the sizes for the OS-independent
291 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
292 debug version of the code includes the debug output trace mechanism and
293 has a much larger code and data size.
296 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
297 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
299 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
300 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
303 2) iASL Compiler/Disassembler and Tools:
305 Disassembler: Add dump of ASCII equivalent text within a comment at the
306 end of each line of the output for the Buffer() ASL operator.
308 AcpiDump: Miscellaneous changes:
309 Fixed repetitive table dump in -n mode.
310 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if
311 the ACPI 2.0 GUID fails.
313 iASL: Fixed a problem where the compiler could fault if incorrectly given
314 an acpidump output file as input. ACPICA BZ 1088. David Box.
316 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if
317 they are invoked without any arguments.
319 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ
320 1086. Colin Ian King.
322 Disassembler: Cleaned up a block of code that extracts a parent Op
323 object. Added a comment that explains that the parent is guaranteed to be
324 valid in this case. ACPICA BZ 1069.
326 ----------------------------------------
327 24 April 2014. Summary of changes for version 20140424:
329 1) ACPICA kernel-resident subsystem:
331 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
332 Some of these tables are known to contain a trailing NULL entry. Lv
335 Removed an extraneous error message for the case where there are a large
336 number of system GPEs (> 124). This was the "32-bit FADT register is too
337 long to convert to GAS struct" message, which is irrelevant for GPEs
338 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
339 (limited capacity) GAS bit length. Also, several changes to ensure proper
340 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
343 Implemented and deployed additional configuration support for the public
344 ACPICA external interfaces. Entire classes of interfaces can now be
345 easily modified or configured out, replaced by stubbed inline functions
346 by default. Lv Zheng.
348 Moved all public ACPICA runtime configuration globals to the public
349 ACPICA external interface file for convenience. Also, removed some
350 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
352 Documentation: Added a new section to the ACPICA reference describing the
353 maximum number of GPEs that can be supported by the FADT-defined GPEs in
354 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
357 Example Code and Data Size: These are the sizes for the OS-independent
358 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
359 debug version of the code includes the debug output trace mechanism and
360 has a much larger code and data size.
363 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
364 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
366 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
367 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
370 2) iASL Compiler/Disassembler and Tools:
372 iASL and disassembler: Add full support for the LPIT table (Low Power
373 Idle Table). Includes support in the disassembler, data table compiler,
374 and template generator.
377 1) Add option to force the use of the RSDT (over the XSDT).
378 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
380 iASL: Add check for predefined packages that are too large. For
381 predefined names that contain subpackages, check if each subpackage is
382 too large. (Check for too small already exists.)
384 Debugger: Updated the GPE command (which simulates a GPE by executing the
385 GPE code paths in ACPICA). The GPE device is now optional, and defaults
386 to the GPE 0/1 FADT-defined blocks.
388 Unix application OSL: Update line-editing support. Add additional error
389 checking and take care not to reset terminal attributes on exit if they
390 were never set. This should help guarantee that the terminal is always
391 left in the previous state on program exit.
393 ----------------------------------------
394 25 March 2014. Summary of changes for version 20140325:
396 1) ACPICA kernel-resident subsystem:
398 Updated the auto-serialize feature for control methods. This feature
399 automatically serializes all methods that create named objects in order
400 to prevent runtime errors. The update adds support to ignore the
401 currently executing AML SyncLevel when invoking such a method, in order
402 to prevent disruption of any existing SyncLevel priorities that may exist
403 in the AML code. Although the use of SyncLevels is relatively rare, this
404 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
405 appear on some machines starting with the 20140214 release.
407 Added a new external interface to allow the host to install ACPI tables
408 very early, before the namespace is even created. AcpiInstallTable gives
409 the host additional flexibility for ACPI table management. Tables can be
410 installed directly by the host as if they had originally appeared in the
411 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
412 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
413 with additional internal restructuring and cleanup. See the ACPICA
414 Reference for interface details. Lv Zheng.
416 Added validation of the checksum for all incoming dynamically loaded
417 tables (via external interfaces or via AML Load/LoadTable operators). Lv
420 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
421 and GPE handler removal. Restructured calls to eliminate possible race
422 conditions. Lv Zheng.
424 Added a warning for the use/execution of the ASL/AML Unload (table)
425 operator. This will help detect and identify machines that use this
426 operator if and when it is ever used. This operator has never been seen
427 in the field and the usage model and possible side-effects of the drastic
428 runtime action of a full table removal are unknown.
430 Reverted the use of #pragma push/pop which was introduced in the 20140214
431 release. It appears that push and pop are not implemented by enough
432 compilers to make the use of this feature feasible for ACPICA at this
433 time. However, these operators may be deployed in a future ACPICA
436 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
439 Source code generation:
440 1) Disabled the use of the "strchr" macro for the gcc-specific
441 generation. For some versions of gcc, this macro can periodically expose
442 a compiler bug which in turn causes compile-time error(s).
443 2) Added support for PPC64 compilation. Colin Ian King.
445 Example Code and Data Size: These are the sizes for the OS-independent
446 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
447 debug version of the code includes the debug output trace mechanism and
448 has a much larger code and data size.
451 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
452 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
454 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
455 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
458 2) iASL Compiler/Disassembler and Tools:
460 Disassembler: Added several new features to improve the readability of
461 the resulting ASL code. Extra information is emitted within comment
462 fields in the ASL code:
463 1) Known _HID/_CID values are decoded to descriptive text.
464 2) Standard values for the Notify() operator are decoded to descriptive
466 3) Target operands are expanded to full pathnames (in a comment) when
469 Disassembler: Miscellaneous updates for extern() handling:
470 1) Abort compiler if file specified by -fe option does not exist.
471 2) Silence unnecessary warnings about argument count mismatches.
472 3) Update warning messages concerning unresolved method externals.
473 4) Emit "UnknownObj" keyword for externals whose type cannot be
477 1) Added the -a option to display both the ASL syntax and the AML
478 encoding for an input ASL operator. This effectively displays all known
479 information about an ASL operator with one AcpiHelp invocation.
480 2) Added substring match support (similar to a wildcard) for the -i
481 (_HID/PNP IDs) option.
483 iASL/Disassembler: Since this tool does not yet support execution on big-
484 endian machines, added detection of endianness and an error message if
485 execution is attempted on big-endian. Support for big-endian within iASL
486 is a feature that is on the ACPICA to-be-done list.
489 1) Remove option to extract binary files from an acpidump; this function
490 is made obsolete by the AcpiXtract utility.
491 2) General cleanup of open files and allocated buffers.
493 ----------------------------------------
494 14 February 2014. Summary of changes for version 20140214:
496 1) ACPICA kernel-resident subsystem:
498 Implemented a new mechanism to proactively prevent problems with ill-
499 behaved reentrant control methods that create named ACPI objects. This
500 behavior is illegal as per the ACPI specification, but is nonetheless
501 frequently seen in the field. Previously, this could lead to an
502 AE_ALREADY_EXISTS exception if the method was actually entered by more
503 than one thread. This new mechanism detects such methods at table load
504 time and marks them "serialized" to prevent reentrancy. A new global
505 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
506 feature if desired. This mechanism and global option obsoletes and
507 supersedes the previous AcpiGbl_SerializeAllMethods option.
509 Added the "Windows 2013" string to the _OSI support. ACPICA will now
510 respond TRUE to _OSI queries with this string. It is the stated policy of
511 ACPICA to add new strings to the _OSI support as soon as possible after
512 they are defined. See the full ACPICA _OSI policy which has been added to
513 the utilities/utosi.c file.
515 Hardened/updated the _PRT return value auto-repair code:
516 1) Do not abort the repair on a single subpackage failure, continue to
517 check all subpackages.
518 2) Add check for the minimum subpackage length (4).
519 3) Properly handle extraneous NULL package elements.
521 Added support to avoid the possibility of infinite loops when traversing
522 object linked lists. Never allow an infinite loop, even in the face of
523 corrupted object lists.
525 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
526 pack(pop) directives to ensure that the ACPICA headers are independent of
527 compiler settings or other host headers.
529 Example Code and Data Size: These are the sizes for the OS-independent
530 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
531 debug version of the code includes the debug output trace mechanism and
532 has a much larger code and data size.
535 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
536 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
538 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
539 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
542 2) iASL Compiler/Disassembler and Tools:
544 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
545 first reserved field was incorrectly forced to have a value of zero. This
546 change correctly forces the field to have a value of one. ACPICA BZ 1081.
548 Debugger: Added missing support for the "Extra" and "Data" subobjects
549 when displaying object data.
551 Debugger: Added support to display entire object linked lists when
552 displaying object data.
554 iASL: Removed the obsolete -g option to obtain ACPI tables from the
555 Windows registry. This feature has been superseded by the acpidump
558 ----------------------------------------
559 14 January 2014. Summary of changes for version 20140114:
561 1) ACPICA kernel-resident subsystem:
563 Updated all ACPICA copyrights and signons to 2014. Added the 2014
564 copyright to all module headers and signons, including the standard Linux
565 header. This affects virtually every file in the ACPICA core subsystem,
566 iASL compiler, all ACPICA utilities, and the test suites.
568 Improved parameter validation for AcpiInstallGpeBlock. Added the
570 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
571 2) There is not already a GPE block attached to the device.
572 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
575 Correctly support "references" in the ACPI_OBJECT. This change fixes the
576 support to allow references (namespace nodes) to be passed as arguments
577 to control methods via the evaluate object interface. This is probably
578 most useful for testing purposes, however.
580 Improved support for 32/64 bit physical addresses in printf()-like
581 output. This change improves the support for physical addresses in printf
582 debug statements and other output on both 32-bit and 64-bit hosts. It
583 consistently outputs the appropriate number of bytes for each host. The
584 %p specifier is unsatisfactory since it does not emit uniform output on
585 all hosts/clib implementations (on some, leading zeros are not supported,
586 leading to difficult-to-read output).
588 Example Code and Data Size: These are the sizes for the OS-independent
589 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
590 debug version of the code includes the debug output trace mechanism and
591 has a much larger code and data size.
594 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
595 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
597 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
598 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
601 2) iASL Compiler/Disassembler and Tools:
603 iASL: Fix a possible fault when using the Connection() operator. Fixes a
604 problem if the parent Field definition for the Connection operator refers
605 to an operation region that does not exist. ACPICA BZ 1064.
607 AcpiExec: Load of local test tables is now optional. The utility has the
608 capability to load some various tables to test features of ACPICA.
609 However, there are enough of them that the output of the utility became
610 confusing. With this change, only the required local tables are displayed
611 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
612 line specification. This makes the default output simler and easier to
613 understand. The -el command line option restores the original behavior
614 for testing purposes.
616 AcpiExec: Added support for overlapping operation regions. This change
617 expands the simulation of operation regions by supporting regions that
618 overlap within the given address space. Supports SystemMemory and
619 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
621 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
622 allows AcpiExec to simulate these address spaces, similar to the current
623 support for SystemMemory and SystemIO.
625 Debugger: Added new command to read/write/compare all namespace objects.
626 The command "test objects" will exercise the entire namespace by writing
627 new values to each data object, and ensuring that the write was
628 successful. The original value is then restored and verified.
630 Debugger: Added the "test predefined" command. This change makes this
631 test public and puts it under the new "test" command. The test executes
632 each and every predefined name within the current namespace.
634 ----------------------------------------
635 18 December 2013. Summary of changes for version 20131218:
637 Global note: The ACPI 5.0A specification was released this month. There
638 are no changes needed for ACPICA since this release of ACPI is an
639 errata/clarification release. The specification is available at
643 1) ACPICA kernel-resident subsystem:
645 Added validation of the XSDT root table if it is present. Some older
646 platforms contain an XSDT that is ill-formed or otherwise invalid (such
647 as containing some or all entries that are NULL pointers). This change
648 adds a new function to validate the XSDT before actually using it. If the
649 XSDT is found to be invalid, ACPICA will now automatically fall back to
650 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
651 ACPICA and enhanced by Lv Zheng and Bob Moore.
653 Added a runtime option to ignore the XSDT and force the use of the RSDT.
654 This change adds a runtime option that will force ACPICA to use the RSDT
655 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
656 requires that an XSDT be used instead of the RSDT, the XSDT has been
657 found to be corrupt or ill-formed on some machines. Lv Zheng.
659 Added a runtime option to favor 32-bit FADT register addresses over the
660 64-bit addresses. This change adds an option to favor 32-bit FADT
661 addresses when there is a conflict between the 32-bit and 64-bit versions
662 of the same register. The default behavior is to use the 64-bit version
663 in accordance with the ACPI specification. This can now be overridden via
664 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
666 During the change above, the internal "Convert FADT" and "Verify FADT"
667 functions have been merged to simplify the code, making it easier to
668 understand and maintain. ACPICA BZ 933.
670 Improve exception reporting and handling for GPE block installation.
671 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
672 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
674 Added helper macros to extract bus/segment numbers from the HEST table.
675 This change adds two macros to extract the encoded bus and segment
676 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
677 Betty Dall <betty.dall@hp.com>
679 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
680 by ACPICA. It is not a public macro, so it should have no effect on
681 existing OSV code. Lv Zheng.
683 Example Code and Data Size: These are the sizes for the OS-independent
684 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
685 debug version of the code includes the debug output trace mechanism and
686 has a much larger code and data size.
689 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
690 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
692 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
693 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
696 2) iASL Compiler/Disassembler and Tools:
698 Disassembler: Improved pathname support for emitted External()
699 statements. This change adds full pathname support for external names
700 that have been resolved internally by the inclusion of additional ACPI
701 tables (via the iASL -e option). Without this change, the disassembler
702 can emit multiple externals for the same object, or it become confused
703 when the Scope() operator is used on an external object. Overall, greatly
704 improves the ability to actually recompile the emitted ASL code when
705 objects a referenced across multiple ACPI tables. Reported by Michael
706 Tsirkin (mst@redhat.com).
708 Tests/ASLTS: Updated functional control suite to execute with no errors.
709 David Box. Fixed several errors related to the testing of the interpreter
710 slack mode. Lv Zheng.
712 iASL: Added support to detect names that are declared within a control
713 method, but are unused (these are temporary names that are only valid
714 during the time the method is executing). A remark is issued for these
715 cases. ACPICA BZ 1022.
717 iASL: Added full support for the DBG2 table. Adds full disassembler,
718 table compiler, and template generator support for the DBG2 table (Debug
721 iASL: Added full support for the PCCT table, update the table definition.
722 Updates the PCCT table definition in the actbl3.h header and adds table
723 compiler and template generator support.
725 iASL: Added an option to emit only error messages (no warnings/remarks).
726 The -ve option will enable only error messages, warnings and remarks are
727 suppressed. This can simplify debugging when only the errors are
728 important, such as when an ACPI table is disassembled and there are many
729 warnings and remarks -- but only the actual errors are of real interest.
731 Example ACPICA code (source/tools/examples): Updated the example code so
732 that it builds to an actual working program, not just example code. Added
733 ACPI tables and execution of an example control method in the DSDT. Added
734 makefile support for Unix generation.
736 ----------------------------------------
737 15 November 2013. Summary of changes for version 20131115:
739 This release is available at https://acpica.org/downloads
742 1) ACPICA kernel-resident subsystem:
744 Resource Manager: Fixed loop termination for the "get AML length"
745 function. The loop previously had an error termination on a NULL resource
746 pointer, which can never happen since the loop simply increments a valid
747 resource pointer. This fix changes the loop to terminate with an error on
748 an invalid end-of-buffer condition. The problem can be seen as an
749 infinite loop by callers to AcpiSetCurrentResources with an invalid or
750 corrupted resource descriptor, or a resource descriptor that is missing
751 an END_TAG descriptor. Reported by Dan Carpenter
752 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
754 Table unload and ACPICA termination: Delete all attached data objects
755 during namespace node deletion. This fix updates namespace node deletion
756 to delete the entire list of attached objects (attached via
757 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
758 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
760 ACPICA termination: Added support to delete all objects attached to the
761 root namespace node. This fix deletes any and all objects that have been
762 attached to the root node via AcpiAttachData. Previously, none of these
763 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
765 Debug output: Do not emit the function nesting level for the in-kernel
766 build. The nesting level is really only useful during a single-thread
767 execution. Therefore, only enable this output for the AcpiExec utility.
768 Also, only emit the thread ID when executing under AcpiExec (Context
769 switches are still always detected and a message is emitted). ACPICA BZ
772 Example Code and Data Size: These are the sizes for the OS-independent
773 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
774 debug version of the code includes the debug output trace mechanism and
775 has a much larger code and data size.
778 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
779 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
781 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
782 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
785 2) iASL Compiler/Disassembler and Tools:
787 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
788 correct portable POSIX header for terminal control functions.
790 Disassembler: Fixed control method invocation issues related to the use
791 of the CondRefOf() operator. The problem is seen in the disassembly where
792 control method invocations may not be disassembled properly if the
793 control method name has been used previously as an argument to CondRefOf.
794 The solution is to not attempt to emit an external declaration for the
795 CondRefOf target (it is not necessary in the first place). This prevents
796 disassembler object type confusion. ACPICA BZ 988.
798 Unix Makefiles: Added an option to disable compiler optimizations and the
799 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
800 with optimizations (reportedly, gcc 4.4 for example). This change adds a
801 command line option for make (NOOPT) that disables all compiler
802 optimizations and the _FORTIFY_SOURCE compiler flag. The default
803 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
804 1034. Lv Zheng, Bob Moore.
806 Tests/ASLTS: Added options to specify individual test cases and modes.
807 This allows testers running aslts.sh to optionally specify individual
808 test modes and test cases. Also added an option to disable the forced
809 generation of the ACPICA tools from source if desired. Lv Zheng.
811 ----------------------------------------
812 27 September 2013. Summary of changes for version 20130927:
814 This release is available at https://acpica.org/downloads
817 1) ACPICA kernel-resident subsystem:
819 Fixed a problem with store operations to reference objects. This change
820 fixes a problem where a Store operation to an ArgX object that contained
822 reference to a field object did not complete the automatic dereference
824 then write to the actual field object. Instead, the object type of the
825 field object was inadvertently changed to match the type of the source
826 operand. The new behavior will actually write to the field object (buffer
827 field or field unit), thus matching the correct ACPI-defined behavior.
829 Implemented support to allow the host to redefine individual OSL
830 prototypes. This change enables the host to redefine OSL prototypes found
831 in the acpiosxf.h file. This allows the host to implement OSL interfaces
832 with a macro or inlined function. Further, it allows the host to add any
833 additional required modifiers such as __iomem, __init, __exit, etc., as
834 necessary on a per-interface basis. Enables maximum flexibility for the
835 OSL interfaces. Lv Zheng.
837 Hardcoded the access width for the FADT-defined reset register. The ACPI
838 specification requires the reset register width to be 8 bits. ACPICA now
839 hardcodes the width to 8 and ignores the FADT width value. This provides
840 compatibility with other ACPI implementations that have allowed BIOS code
841 with bad register width values to go unnoticed. Matthew Garett, Bob
845 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
847 in the OSL header (acpiosxf). The change modifies the position of this
848 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
849 build issues if the OSL defines the implementation of the interface to be
850 an inline stub function. Lv Zheng.
852 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
853 initialization interfaces. This change adds a new macro for the main init
854 and terminate external interfaces in order to support hosts that require
855 additional or different processing for these functions. Changed from
856 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
859 Cleaned up the memory allocation macros for configurability. In the
861 case, the ACPI_ALLOCATE and related macros now resolve directly to their
862 respective AcpiOs* OSL interfaces. Two options:
863 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
864 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
865 2) For AcpiExec (and for debugging), the macros can optionally be
867 to the local ACPICA interfaces that track each allocation (local tracking
868 is used to immediately detect memory leaks).
871 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
872 to predefine this macro to either TRUE or FALSE during the system build.
874 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
876 Example Code and Data Size: These are the sizes for the OS-independent
877 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
878 debug version of the code includes the debug output trace mechanism and
879 has a much larger code and data size.
882 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
883 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
885 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
886 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
889 2) iASL Compiler/Disassembler and Tools:
891 iASL: Implemented wildcard support for the -e option. This simplifies use
892 when there are many SSDTs that must be included to resolve external
894 declarations. ACPICA BZ 1041. Example:
895 iasl -e ssdt*.dat -d dsdt.dat
897 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
898 adds a portable module that implements full history and limited line
899 editing for Unix and Linux systems. It does not use readline() due to
900 portability issues. Instead it uses the POSIX termio interface to put the
901 terminal in raw input mode so that the various special keys can be
903 (such as up/down-arrow for history support and left/right-arrow for line
904 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
906 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
907 one or more spaces. This provides compatible with early or different
908 versions of the AcpiDump utility. ACPICA BZ 1044.
910 AcpiDump: Do not ignore tables that contain only an ACPI table header.
911 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
912 no other data. This change adds support to dump these tables. Any tables
913 shorter than the length of an ACPI table header remain in error (an error
914 message is emitted). Reported by Yi Li.
916 Debugger: Echo actual command along with the "unknown command" message.
918 ----------------------------------------
919 23 August 2013. Summary of changes for version 20130823:
921 1) ACPICA kernel-resident subsystem:
923 Implemented support for host-installed System Control Interrupt (SCI)
924 handlers. Certain ACPI functionality requires the host to handle raw
925 SCIs. For example, the "SCI Doorbell" that is defined for memory power
926 state support requires the host device driver to handle SCIs to examine
927 if the doorbell has been activated. Multiple SCI handlers can be
928 installed to allow for future expansion. New external interfaces are
929 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
930 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
932 Operation region support: Never locally free the handler "context"
933 pointer. This change removes some dangerous code that attempts to free
934 the handler context pointer in some (rare) circumstances. The owner of
935 the handler owns this pointer and the ACPICA code should never touch it.
936 Although not seen to be an issue in any kernel, it did show up as a
937 problem (fault) under AcpiExec. Also, set the internal storage field for
938 the context pointer to zero when the region is deactivated, simply for
939 sanity. David Box. ACPICA BZ 1039.
941 AcpiRead: On error, do not modify the return value target location. If an
942 error happens in the middle of a split 32/32 64-bit I/O operation, do not
943 modify the target of the return value pointer. Makes the code consistent
944 with the rest of ACPICA. Bjorn Helgaas.
946 Example Code and Data Size: These are the sizes for the OS-independent
947 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
948 debug version of the code includes the debug output trace mechanism and
949 has a much larger code and data size.
952 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
953 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
955 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
956 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
959 2) iASL Compiler/Disassembler and Tools:
961 AcpiDump: Implemented several new features and fixed some problems:
962 1) Added support to dump the RSDP, RSDT, and XSDT tables.
963 2) Added support for multiple table instances (SSDT, UEFI).
964 3) Added option to dump "customized" (overridden) tables (-c).
965 4) Fixed a problem where some table filenames were improperly
967 5) Improved some error messages, removed some unnecessary messages.
969 iASL: Implemented additional support for disassembly of ACPI tables that
970 contain invocations of external control methods. The -fe<file> option
971 allows the import of a file that specifies the external methods along
972 with the required number of arguments for each -- allowing for the
973 correct disassembly of the table. This is a workaround for a limitation
974 of AML code where the disassembler often cannot determine the number of
975 arguments required for an external control method and generates incorrect
976 ASL code. See the iASL reference for details. ACPICA BZ 1030.
978 Debugger: Implemented a new command (paths) that displays the full
979 pathnames (namepaths) and object types of all objects in the namespace.
980 This is an alternative to the namespace command.
982 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
983 mechanism and any installed handlers.
985 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
986 This can occur if there are too many parent prefixes in a namepath (for
987 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
989 Application OSLs: Set the return value for the PCI read functions. These
990 functions simply return AE_OK, but should set the return value to zero
991 also. This change implements this. ACPICA BZ 1038.
993 Debugger: Prevent possible command line buffer overflow. Increase the
994 size of a couple of the debugger line buffers, and ensure that overflow
995 cannot happen. ACPICA BZ 1037.
997 iASL: Changed to abort immediately on serious errors during the parsing
998 phase. Due to the nature of ASL, there is no point in attempting to
999 compile these types of errors, and they typically end up causing a
1000 cascade of hundreds of errors which obscure the original problem.
1002 ----------------------------------------
1003 25 July 2013. Summary of changes for version 20130725:
1005 1) ACPICA kernel-resident subsystem:
1007 Fixed a problem with the DerefOf operator where references to FieldUnits
1008 and BufferFields incorrectly returned the parent object, not the actual
1009 value of the object. After this change, a dereference of a FieldUnit
1010 reference results in a read operation on the field to get the value, and
1011 likewise, the appropriate BufferField value is extracted from the target
1014 Fixed a problem where the _WAK method could cause a fault under these
1015 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
1016 method returned no value. The problem is rarely seen because most kernels
1017 run ACPICA in slack mode.
1019 For the DerefOf operator, a fatal error now results if an attempt is made
1020 to dereference a reference (created by the Index operator) to a NULL
1021 package element. Provides compatibility with other ACPI implementations,
1022 and this behavior will be added to a future version of the ACPI
1025 The ACPI Power Management Timer (defined in the FADT) is now optional.
1026 This provides compatibility with other ACPI implementations and will
1027 appear in the next version of the ACPI specification. If there is no PM
1028 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
1029 zero in the FADT indicates no PM timer.
1031 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
1032 allows the host to globally enable/disable all vendor strings, all
1033 feature strings, or both. Intended to be primarily used for debugging
1034 purposes only. Lv Zheng.
1036 Expose the collected _OSI data to the host via a global variable. This
1037 data tracks the highest level vendor ID that has been invoked by the BIOS
1038 so that the host (and potentially ACPICA itself) can change behaviors
1039 based upon the age of the BIOS.
1041 Example Code and Data Size: These are the sizes for the OS-independent
1042 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1043 debug version of the code includes the debug output trace mechanism and
1044 has a much larger code and data size.
1047 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
1048 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
1050 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
1051 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
1054 2) iASL Compiler/Disassembler and Tools:
1056 iASL: Created the following enhancements for the -so option (create
1058 1)Add offsets for the last nameseg in each namepath for every supported
1060 2)Add support for Processor, Device, Thermal Zone, and Scope objects
1061 3)Add the actual AML opcode for the parent object of every supported
1063 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
1065 Disassembler: Emit all unresolved external symbols in a single block.
1066 These are external references to control methods that could not be
1067 resolved, and thus, the disassembler had to make a guess at the number of
1070 iASL: The argument to the -T option (create table template) is now
1071 optional. If not specified, the default table is a DSDT, typically the
1074 ----------------------------------------
1075 26 June 2013. Summary of changes for version 20130626:
1077 1) ACPICA kernel-resident subsystem:
1079 Fixed an issue with runtime repair of the _CST object. Null or invalid
1080 elements were not always removed properly. Lv Zheng.
1082 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
1083 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
1084 the maximum number of GPEs is 1016. Use of multiple GPE block devices
1085 makes the system-wide number of GPEs essentially unlimited.
1087 Example Code and Data Size: These are the sizes for the OS-independent
1088 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1089 debug version of the code includes the debug output trace mechanism and
1090 has a much larger code and data size.
1093 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
1094 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
1096 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
1097 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
1100 2) iASL Compiler/Disassembler and Tools:
1102 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
1103 hosts. Now supports Linux, FreeBSD, and Windows.
1105 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
1106 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
1108 iASL/Preprocessor: Implemented full support for nested
1109 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
1111 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
1112 max. The original purpose of this constraint was to limit the amount of
1113 debug output. However, the string function in question (UtPrintString) is
1114 now used for the disassembler also, where 256 bytes is insufficient.
1115 Reported by RehabMan@GitHub.
1117 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
1118 tables. ACPICA BZ 999. Lv Zheng.
1120 iASL: Fixed a couple of error exit issues that could result in a "Could
1121 not delete <file>" message during ASL compilation.
1123 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
1124 the actual signatures for these tables are "FACP" and "APIC",
1127 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
1128 tables are allowed to have multiple instances.
1130 ----------------------------------------
1131 17 May 2013. Summary of changes for version 20130517:
1133 1) ACPICA kernel-resident subsystem:
1135 Fixed a regression introduced in version 20130328 for _INI methods. This
1136 change fixes a problem introduced in 20130328 where _INI methods are no
1137 longer executed properly because of a memory block that was not
1138 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
1139 <tomasz.nowicki@linaro.org>.
1141 Fixed a possible problem with the new extended sleep registers in the
1143 5.0 FADT. Do not use these registers (even if populated) unless the HW-
1144 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
1147 Implemented return value repair code for _CST predefined objects: Sort
1149 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
1151 Implemented a debug-only option to disable loading of SSDTs from the
1152 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
1153 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
1154 acglobal.h - ACPICA BZ 1005. Lv Zheng.
1156 Fixed some issues in the ACPICA initialization and termination code:
1157 Tomasz Nowicki <tomasz.nowicki@linaro.org>
1158 1) Clear events initialized flag upon event component termination. ACPICA
1160 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
1161 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
1162 4) Clear debug buffer global on termination to prevent possible multiple
1163 delete. ACPICA BZ 1010.
1165 Standardized all switch() blocks across the entire source base. After
1167 years, different formatting for switch() had crept in. This change makes
1168 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
1170 Split some files to enhance ACPICA modularity and configurability:
1171 1) Split buffer dump routines into utilities/utbuffer.c
1172 2) Split internal error message routines into utilities/uterror.c
1173 3) Split table print utilities into tables/tbprint.c
1174 4) Split iASL command-line option processing into asloptions.c
1176 Makefile enhancements:
1177 1) Support for all new files above.
1178 2) Abort make on errors from any subcomponent. Chao Guan.
1179 3) Add build support for Apple Mac OS X. Liang Qi.
1181 Example Code and Data Size: These are the sizes for the OS-independent
1182 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1183 debug version of the code includes the debug output trace mechanism and
1184 has a much larger code and data size.
1187 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
1188 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
1190 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
1191 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
1194 2) iASL Compiler/Disassembler and Tools:
1196 New utility: Implemented an easily portable version of the acpidump
1197 utility to extract ACPI tables from the system (or a file) in an ASCII
1199 dump format. The top-level code implements the various command line
1200 options, file I/O, and table dump routines. To port to a new host, only
1201 three functions need to be implemented to get tables -- since this
1202 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
1203 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
1204 1) The Windows version obtains the ACPI tables from the Registry.
1205 2) The Linux version is under development.
1206 3) Other hosts - If an OS-dependent module is submitted, it will be
1207 distributed with ACPICA.
1209 iASL: Fixed a regression for -D preprocessor option (define symbol). A
1210 restructuring/change to the initialization sequence caused this option to
1211 no longer work properly.
1213 iASL: Implemented a mechanism to disable specific warnings and remarks.
1214 Adds a new command line option, "-vw <messageid> as well as "#pragma
1215 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
1217 iASL: Fix for too-strict package object validation. The package object
1218 validation for return values from the predefined names is a bit too
1219 strict, it does not allow names references within the package (which will
1220 be resolved at runtime.) These types of references cannot be validated at
1221 compile time. This change ignores named references within package objects
1222 for names that return or define static packages.
1224 Debugger: Fixed the 80-character command line limitation for the History
1225 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
1227 iASL: Added control method and package support for the -so option
1228 (generates AML offset table for BIOS support.)
1230 iASL: issue a remark if a non-serialized method creates named objects. If
1231 a thread blocks within the method for any reason, and another thread
1232 enters the method, the method will fail because an attempt will be made
1234 create the same (named) object twice. In this case, issue a remark that
1235 the method should be marked serialized. NOTE: may become a warning later.
1238 ----------------------------------------
1239 18 April 2013. Summary of changes for version 20130418:
1241 1) ACPICA kernel-resident subsystem:
1243 Fixed a possible buffer overrun during some rare but specific field unit
1244 read operations. This overrun can only happen if the DSDT version is 1 --
1245 meaning that all AML integers are 32 bits -- and the field length is
1246 between 33 and 55 bits long. During the read, an internal buffer object
1248 created for the field unit because the field is larger than an integer
1250 bits). However, in this case, the buffer will be incorrectly written
1251 beyond the end because the buffer length is less than the internal
1253 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
1254 long, but a full 8 bytes will be written.
1256 Updated the Embedded Controller "orphan" _REG method support. This refers
1257 to _REG methods under the EC device that have no corresponding operation
1258 region. This is allowed by the ACPI specification. This update removes a
1259 dependency on the existence an ECDT table. It will execute an orphan _REG
1260 method as long as the operation region handler for the EC is installed at
1261 the EC device node and not the namespace root. Rui Zhang (original
1262 update), Bob Moore (update/integrate).
1264 Implemented run-time argument typechecking for all predefined ACPI names
1265 (_STA, _BIF, etc.) This change performs object typechecking on all
1266 incoming arguments for all predefined names executed via
1267 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
1268 passing correct object types as well as the correct number of arguments
1269 (therefore identifying any issues immediately). Also, the ASL/namespace
1270 definition of the predefined name is checked against the ACPI
1271 specification for the proper argument count. Adds one new file,
1274 Changed an exception code for the ASL UnLoad() operator. Changed the
1275 exception code for the case where the input DdbHandle is invalid, from
1276 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
1278 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
1279 global makefile. The use of this flag causes compiler errors on earlier
1280 versions of GCC, so it has been removed for compatibility.
1282 Miscellaneous cleanup:
1283 1) Removed some unused/obsolete macros
1284 2) Fixed a possible memory leak in the _OSI support
1285 3) Removed an unused variable in the predefined name support
1286 4) Windows OSL: remove obsolete reference to a memory list field
1288 Example Code and Data Size: These are the sizes for the OS-independent
1289 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1290 debug version of the code includes the debug output trace mechanism and
1291 has a much larger code and data size.
1294 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
1295 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
1297 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
1298 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
1301 2) iASL Compiler/Disassembler and Tools:
1303 AcpiExec: Added installation of a handler for the SystemCMOS address
1304 space. This prevents control method abort if a method accesses this
1307 AcpiExec: Added support for multiple EC devices, and now install EC
1308 operation region handler(s) at the actual EC device instead of the
1309 namespace root. This reflects the typical behavior of host operating
1312 AcpiExec: Updated to ensure that all operation region handlers are
1313 installed before the _REG methods are executed. This prevents a _REG
1314 method from aborting if it accesses an address space has no handler.
1315 AcpiExec installs a handler for every possible address space.
1317 Debugger: Enhanced the "handlers" command to display non-root handlers.
1318 This change enhances the handlers command to display handlers associated
1319 with individual devices throughout the namespace, in addition to the
1320 currently supported display of handlers associated with the root
1324 ASL Test Suite: Several test suite errors have been identified and
1325 resolved, reducing the total error count during execution. Chao Guan.
1327 ----------------------------------------
1328 28 March 2013. Summary of changes for version 20130328:
1330 1) ACPICA kernel-resident subsystem:
1332 Fixed several possible race conditions with the internal object reference
1333 counting mechanism. Some of the external ACPICA interfaces update object
1334 reference counts without holding the interpreter or namespace lock. This
1335 change adds a spinlock to protect reference count updates on the internal
1336 ACPICA objects. Reported by and with assistance from Andriy Gapon
1339 FADT support: Removed an extraneous warning for very large GPE register
1340 sets. This change removes a size mismatch warning if the legacy length
1341 field for a GPE register set is larger than the 64-bit GAS structure can
1342 accommodate. GPE register sets can be larger than the 255-bit width
1343 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
1345 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
1346 return from this interface. Handles a possible timeout case if
1347 ACPI_WAIT_FOREVER is modified by the host to be a value less than
1348 "forever". Jung-uk Kim.
1350 Predefined name support: Add allowed/required argument type information
1352 the master predefined info table. This change adds the infrastructure to
1353 enable typechecking on incoming arguments for all predefined
1354 methods/objects. It does not actually contain the code that will fully
1355 utilize this information, this is still under development. Also condenses
1356 some duplicate code for the predefined names into a new module,
1357 utilities/utpredef.c
1359 Example Code and Data Size: These are the sizes for the OS-independent
1360 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1361 debug version of the code includes the debug output trace mechanism and
1362 has a much larger code and data size.
1365 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
1366 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
1368 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
1369 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
1372 2) iASL Compiler/Disassembler and Tools:
1374 iASL: Implemented a new option to simplify the development of ACPI-
1376 BIOS code. Adds support for a new "offset table" output file. The -so
1377 option will create a C table containing the AML table offsets of various
1378 named objects in the namespace so that BIOS code can modify them easily
1380 boot time. This can simplify BIOS runtime code by eliminating expensive
1381 searches for "magic values", enhancing boot times and adding greater
1382 reliability. With assistance from Lee Hamel.
1384 iASL: Allow additional predefined names to return zero-length packages.
1385 Now, all predefined names that are defined by the ACPI specification to
1386 return a "variable-length package of packages" are allowed to return a
1387 zero length top-level package. This allows the BIOS to tell the host that
1388 the requested feature is not supported, and supports existing BIOS/ASL
1391 iASL: Changed the "result not used" warning to an error. This is the case
1392 where an ASL operator is effectively a NOOP because the result of the
1393 operation is not stored anywhere. For example:
1395 There is no target (missing 3rd argument), nor is the function return
1396 value used. This is potentially a very serious problem -- since the code
1397 was probably intended to do something, but for whatever reason, the value
1398 was not stored. Therefore, this issue has been upgraded from a warning to
1401 AcpiHelp: Added allowable/required argument types to the predefined names
1402 info display. This feature utilizes the recent update to the predefined
1403 names table (above).
1405 ----------------------------------------
1406 14 February 2013. Summary of changes for version 20130214:
1408 1) ACPICA Kernel-resident Subsystem:
1410 Fixed a possible regression on some hosts: Reinstated the safe return
1411 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
1412 evaluated only once. Although these macros are not needed for the ACPICA
1413 code itself, they are often used by ACPI-related host device drivers
1415 the safe feature may be necessary.
1417 Fixed several issues related to the ACPI 5.0 reduced hardware support
1418 (SOC): Now ensure that if the platform declares itself as hardware-
1420 via the FADT, the following functions become NOOPs (and always return
1421 AE_OK) because ACPI is always enabled by definition on these machines:
1427 Dynamic Object Repair: Implemented additional runtime repairs for
1428 predefined name return values. Both of these repairs can simplify code in
1429 the related device drivers that invoke these methods:
1430 1) For the _STR and _MLS names, automatically repair/convert an ASCII
1431 string to a Unicode buffer.
1432 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
1434 lone end tag descriptor in the following cases: A Return(0) was executed,
1435 a null buffer was returned, or no object at all was returned (non-slack
1436 mode only). Adds a new file, nsconvert.c
1437 ACPICA BZ 998. Bob Moore, Lv Zheng.
1439 Resource Manager: Added additional code to prevent possible infinite
1441 while traversing corrupted or ill-formed resource template buffers. Check
1442 for zero-length resource descriptors in all code that loops through
1443 resource templates (the length field is used to index through the
1444 template). This change also hardens the external AcpiWalkResources and
1445 AcpiWalkResourceBuffer interfaces.
1447 Local Cache Manager: Enhanced the main data structure to eliminate an
1448 unnecessary mechanism to access the next object in the list. Actually
1449 provides a small performance enhancement for hosts that use the local
1450 ACPICA cache manager. Jung-uk Kim.
1452 Example Code and Data Size: These are the sizes for the OS-independent
1453 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1454 debug version of the code includes the debug output trace mechanism and
1455 has a much larger code and data size.
1458 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
1459 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
1461 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
1462 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
1465 2) iASL Compiler/Disassembler and Tools:
1467 iASL/Disassembler: Fixed several issues with the definition of the ACPI
1468 5.0 RASF table (RAS Feature Table). This change incorporates late changes
1469 that were made to the ACPI 5.0 specification.
1471 iASL/Disassembler: Added full support for the following new ACPI tables:
1472 1) The MTMR table (MID Timer Table)
1473 2) The VRTC table (Virtual Real Time Clock Table).
1474 Includes header file, disassembler, table compiler, and template support
1477 iASL: Implemented compile-time validation of package objects returned by
1478 predefined names. This new feature validates static package objects
1479 returned by the various predefined names defined to return packages. Both
1480 object types and package lengths are validated, for both parent packages
1481 and sub-packages, if any. The code is similar in structure and behavior
1483 the runtime repair mechanism within the AML interpreter and uses the
1484 existing predefined name information table. Adds a new file, aslprepkg.c.
1487 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
1488 This feature detects a binary file with a valid ACPI table header and
1489 invokes the disassembler automatically. Eliminates the need to
1490 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
1492 iASL/Disassembler: Added several warnings for the case where there are
1493 unresolved control methods during the disassembly. This can potentially
1494 cause errors when the output file is compiled, because the disassembler
1495 assumes zero method arguments in these cases (it cannot determine the
1496 actual number of arguments without resolution/definition of the method).
1498 Debugger: Added support to display all resources with a single command.
1499 Invocation of the resources command with no arguments will now display
1501 resources within the current namespace.
1503 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
1506 ----------------------------------------
1507 17 January 2013. Summary of changes for version 20130117:
1509 1) ACPICA Kernel-resident Subsystem:
1511 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
1512 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
1513 objects to return a package containing one integer, most BIOS code
1515 two integers and the previous code reflects that. However, we also need
1517 support BIOS code that actually implements to the ACPI spec, and this
1518 change reflects this.
1520 Fixed two issues with the ACPI_DEBUG_PRINT macros:
1521 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
1522 C compilers that require this support.
1523 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
1524 ACPI_DEBUG is already used by many of the various hosts.
1526 Updated all ACPICA copyrights and signons to 2013. Added the 2013
1527 copyright to all module headers and signons, including the standard Linux
1528 header. This affects virtually every file in the ACPICA core subsystem,
1529 iASL compiler, all ACPICA utilities, and the test suites.
1531 Example Code and Data Size: These are the sizes for the OS-independent
1532 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1533 debug version of the code includes the debug output trace mechanism and
1534 has a much larger code and data size.
1537 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
1538 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
1540 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
1541 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
1544 2) iASL Compiler/Disassembler and Tools:
1546 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
1547 prevent a possible fault on some hosts. Some C libraries modify the arg
1548 pointer parameter to vfprintf making it difficult to call it twice in the
1549 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
1550 does not affect the Windows OSL since the Win C library does not modify
1551 the arg pointer. Chao Guan, Bob Moore.
1553 iASL: Fixed a possible infinite loop when the maximum error count is
1554 reached. If an output file other than the .AML file is specified (such as
1555 a listing file), and the maximum number of errors is reached, do not
1556 attempt to flush data to the output file(s) as the compiler is aborting.
1557 This can cause an infinite loop as the max error count code essentially
1558 keeps calling itself.
1560 iASL/Disassembler: Added an option (-in) to ignore NOOP
1562 Implemented for both the compiler and the disassembler. Often, the NOOP
1563 opcode is used as padding for packages that are changed dynamically by
1565 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
1566 errors. This option causes the disassembler to ignore all NOOP opcodes
1567 (0xA3), and it also causes the compiler to ignore all ASL source code
1571 Debugger: Enhanced the Sleep command to execute all sleep states. This
1572 change allows Sleep to be invoked with no arguments and causes the
1573 debugger to execute all of the sleep states, 0-5, automatically.
1575 ----------------------------------------
1576 20 December 2012. Summary of changes for version 20121220:
1578 1) ACPICA Kernel-resident Subsystem:
1580 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
1581 alternate entry point for AcpiWalkResources and improves the usability of
1582 the resource manager by accepting as input a buffer containing the output
1583 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
1584 input buffer is not deleted by this interface so that it can be used by
1585 the host later. See the ACPICA reference for details.
1587 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
1588 (DSDT version < 2). The constant will be truncated and this warning
1589 reflects that behavior.
1591 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
1592 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
1593 both get and set the new wake bit in these descriptors, separately from
1594 the existing share bit. Reported by Aaron Lu.
1596 Interpreter: Fix Store() when an implicit conversion is not possible. For
1597 example, in the cases such as a store of a string to an existing package
1598 object, implement the store as a CopyObject(). This is a small departure
1599 from the ACPI specification which states that the control method should
1601 aborted in this case. However, the ASLTS suite depends on this behavior.
1603 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
1604 macros: check if debug output is currently enabled as soon as possible to
1605 minimize performance impact if debug is in fact not enabled.
1607 Source code restructuring: Cleanup to improve modularity. The following
1608 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
1609 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
1610 Associated makefiles and project files have been updated.
1612 Changed an exception code for LoadTable operator. For the case where one
1613 of the input strings is too long, change the returned exception code from
1614 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
1616 Fixed a possible memory leak in dispatcher error path. On error, delete
1617 the mutex object created during method mutex creation. Reported by
1618 tim.gardner@canonical.com.
1620 Example Code and Data Size: These are the sizes for the OS-independent
1621 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1622 debug version of the code includes the debug output trace mechanism and
1623 has a much larger code and data size.
1626 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
1627 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1629 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
1630 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
1633 2) iASL Compiler/Disassembler and Tools:
1635 iASL: Disallow a method call as argument to the ObjectType ASL operator.
1636 This change tracks an errata to the ACPI 5.0 document. The AML grammar
1637 will not allow the interpreter to differentiate between a method and a
1638 method invocation when these are used as an argument to the ObjectType
1639 operator. The ACPI specification change is to disallow a method
1641 (UserTerm) for the ObjectType operator.
1643 Finish support for the TPM2 and CSRT tables in the headers, table
1644 compiler, and disassembler.
1646 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
1647 always expires immediately if the semaphore is not available. The
1649 code was using a relative-time timeout, but sem_timedwait requires the
1651 of an absolute time.
1653 iASL: Added a remark if the Timer() operator is used within a 32-bit
1654 table. This operator returns a 64-bit time value that will be truncated
1655 within a 32-bit table.
1657 iASL Source code restructuring: Cleanup to improve modularity. The
1658 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
1659 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
1663 ----------------------------------------
1664 14 November 2012. Summary of changes for version 20121114:
1666 1) ACPICA Kernel-resident Subsystem:
1668 Implemented a performance enhancement for ACPI/AML Package objects. This
1669 change greatly increases the performance of Package objects within the
1670 interpreter. It changes the processing of reference counts for packages
1672 optimizing for the most common case where the package sub-objects are
1673 either Integers, Strings, or Buffers. Increases the overall performance
1675 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
1677 Chao Guan. ACPICA BZ 943.
1679 Implemented and deployed common macros to extract flag bits from resource
1680 descriptors. Improves readability and maintainability of the code. Fixes
1682 problem with the UART serial bus descriptor for the number of data bits
1683 flags (was incorrectly 2 bits, should be 3).
1685 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
1686 of the macros and changed the SETx macros to the style of (destination,
1687 source). Also added ACPI_CASTx companion macros. Lv Zheng.
1689 Example Code and Data Size: These are the sizes for the OS-independent
1690 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1691 debug version of the code includes the debug output trace mechanism and
1692 has a much larger code and data size.
1695 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
1696 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1698 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
1699 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1702 2) iASL Compiler/Disassembler and Tools:
1704 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
1705 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
1706 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
1708 Disassembler: Fixed a problem with external declaration generation. Fixes
1709 a problem where an incorrect pathname could be generated for an external
1710 declaration if the original reference to the object includes leading
1711 carats (^). ACPICA BZ 984.
1713 Debugger: Completed a major update for the Disassemble<method> command.
1714 This command was out-of-date and did not properly disassemble control
1715 methods that had any reasonable complexity. This fix brings the command
1717 to the same level as the rest of the disassembler. Adds one new file,
1718 dmdeferred.c, which is existing code that is now common with the main
1719 disassembler and the debugger disassemble command. ACPICA MZ 978.
1721 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
1722 Newer versions of Bison emit this prototype, so moved the prototype out
1724 the iASL header to where it is actually used in order to avoid a
1728 iASL/Tools: Standardized use of the stream I/O functions:
1729 1) Ensure check for I/O error after every fopen/fread/fwrite
1730 2) Ensure proper order of size/count arguments for fread/fwrite
1731 3) Use test of (Actual != Requested) after all fwrite, and most fread
1732 4) Standardize I/O error messages
1733 Improves reliability and maintainability of the code. Bob Moore, Lv
1737 Disassembler: Prevent duplicate External() statements. During generation
1738 of external statements, detect similar pathnames that are actually
1739 duplicates such as these:
1742 Remove all leading '\' characters from pathnames during the external
1743 statement generation so that duplicates will be detected and tossed.
1746 Tools: Replace low-level I/O with stream I/O functions. Replace
1747 open/read/write/close with the stream I/O equivalents
1748 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
1751 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
1752 name header so that AcpiXtract recognizes the output file/table.
1754 iASL: Remove obsolete -2 option flag. Originally intended to force the
1755 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
1756 and the entire concept is now obsolete.
1758 ----------------------------------------
1759 18 October 2012. Summary of changes for version 20121018:
1762 1) ACPICA Kernel-resident Subsystem:
1764 Updated support for the ACPI 5.0 MPST table. Fixes some problems
1765 introduced by late changes to the table as it was added to the ACPI 5.0
1766 specification. Includes header, disassembler, and data table compiler
1767 support as well as a new version of the MPST template.
1769 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
1770 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
1771 methods: _HID, _CID, and _UID.
1773 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
1774 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
1775 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
1776 names for their various drivers. Affects the AcpiGetObjectInfo external
1777 interface, and other internal interfaces as well.
1779 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
1780 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
1781 on machines that support non-aligned transfers. Optimizes for this case
1782 rather than using a strncpy. With assistance from Zheng Lv.
1784 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
1785 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
1787 Added a new debug print message for AML mutex objects that are force-
1788 released. At control method termination, any currently acquired mutex
1789 objects are force-released. Adds a new debug-only message for each one
1792 Audited/updated all ACPICA return macros and the function debug depth
1793 counter: 1) Ensure that all functions that use the various TRACE macros
1794 also use the appropriate ACPICA return macros. 2) Ensure that all normal
1795 return statements surround the return expression (value) with parens to
1796 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
1797 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
1799 Global source code changes/maintenance: All extra lines at the start and
1800 end of each source file have been removed for consistency. Also, within
1801 comments, all new sentences start with a single space instead of a double
1802 space, again for consistency across the code base.
1804 Example Code and Data Size: These are the sizes for the OS-independent
1805 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1806 debug version of the code includes the debug output trace mechanism and
1807 has a much larger code and data size.
1810 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
1811 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
1813 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
1814 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1817 2) iASL Compiler/Disassembler and Tools:
1819 AcpiExec: Improved the algorithm used for memory leak/corruption
1820 detection. Added some intelligence to the code that maintains the global
1821 list of allocated memory. The list is now ordered by allocated memory
1822 address, significantly improving performance. When running AcpiExec on
1823 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
1824 on the platform and/or the environment. Note, this performance
1825 enhancement affects the AcpiExec utility only, not the kernel-resident
1828 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
1829 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
1830 incorrect table offset reported for invalid opcodes. Report the original
1831 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
1833 Disassembler: Enhanced the -vt option to emit the binary table data in
1834 hex format to assist with debugging.
1836 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
1837 size of file structure. Colin Ian King.
1839 ----------------------------------------
1840 13 September 2012. Summary of changes for version 20120913:
1843 1) ACPICA Kernel-resident Subsystem:
1845 ACPI 5.0: Added two new notify types for the Hardware Error Notification
1846 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
1850 Table Manager: Merged/removed duplicate code in the root table resize
1851 functions. One function is external, the other is internal. Lv Zheng,
1855 Makefiles: Completely removed the obsolete "Linux" makefiles under
1856 acpica/generate/linux. These makefiles are obsolete and have been
1859 the generic unix makefiles under acpica/generate/unix.
1861 Makefiles: Ensure that binary files always copied properly. Minor rule
1863 to ensure that the final binary output files are always copied up to the
1864 appropriate binary directory (bin32 or bin64.)
1866 Example Code and Data Size: These are the sizes for the OS-independent
1867 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1869 version of the code includes the debug output trace mechanism and has a
1871 larger code and data size.
1874 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
1875 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
1877 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
1878 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
1881 2) iASL Compiler/Disassembler and Tools:
1883 Disassembler: Fixed a possible fault during the disassembly of resource
1884 descriptors when a second parse is required because of the invocation of
1885 external control methods within the table. With assistance from
1886 adq@lidskialf.net. ACPICA BZ 976.
1888 iASL: Fixed a namepath optimization problem. An error can occur if the
1890 node that contains the namepath to be optimized does not have a parent
1892 that is a named object. This change fixes the problem.
1894 iASL: Fixed a regression where the AML file is not deleted on errors. The
1896 output file should be deleted if there are any errors during the
1899 only exception is if the -f (force output) option is used. ACPICA BZ 974.
1901 iASL: Added a feature to automatically increase internal line buffer
1903 Via realloc(), automatically increase the internal line buffer sizes as
1904 necessary to support very long source code lines. The current version of
1906 preprocessor requires a buffer long enough to contain full source code
1908 This change increases the line buffer(s) if the input lines go beyond the
1909 current buffer size. This eliminates errors that occurred when a source
1911 line was longer than the buffer.
1913 iASL: Fixed a problem with constant folding in method declarations. The
1914 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
1916 Type3 opcode was used.
1918 Debugger: Improved command help support. For incorrect argument count,
1920 full help for the command. For help command itself, allow an argument to
1923 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
1924 errors during execution of the suite. Guan Chao.
1926 ----------------------------------------
1927 16 August 2012. Summary of changes for version 20120816:
1930 1) ACPICA Kernel-resident Subsystem:
1932 Removed all use of the deprecated _GTS and _BFS predefined methods. The
1934 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
1935 deprecated and will probably be removed from the ACPI specification.
1937 does not invoke them, and reportedly never will. The final nail in the
1939 is that the ACPI specification states that these methods must be run with
1940 interrupts off, which is not going to happen in a kernel interpreter.
1942 Linux has removed all use of the methods also. It was discovered that
1943 invoking these functions caused failures on some machines, probably
1945 they were never tested since Windows does not call them. Affects two
1947 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
1950 Implemented support for complex bit-packed buffers returned from the _PLD
1951 (Physical Location of Device) predefined method. Adds a new external
1952 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
1954 structure. Note: C Bitfields cannot be used for this type of predefined
1955 structure since the memory layout of individual bitfields is not defined
1957 the C language. In addition, there are endian concerns where a compiler
1959 change the bitfield ordering based on the machine type. The new ACPICA
1960 interface eliminates these issues, and should be called after _PLD is
1961 executed. ACPICA BZ 954.
1963 Implemented a change to allow a scope change to root (via "Scope (\)")
1965 execution of module-level ASL code (code that is executed at table load
1968 Added the Windows8/Server2012 string for the _OSI method. This change
1971 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
1974 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
1976 and CSRT (Core System Resource Table).
1978 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
1979 names. This simplifies access to the buffers returned by these predefined
1980 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
1982 GPE support: Removed an extraneous parameter from the various low-level
1983 internal GPE functions. Tang Feng.
1985 Removed the linux makefiles from the unix packages. The generate/linux
1986 makefiles are obsolete and have been removed from the unix tarball
1988 packages. The replacement makefiles are under generate/unix, and there is
1990 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
1992 Updates for Unix makefiles:
1993 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
1994 2) Update linker flags (move to end of command line) for AcpiExec
1998 Split ACPICA initialization functions to new file, utxfinit.c. Split from
1999 utxface.c to improve modularity and reduce file size.
2001 Example Code and Data Size: These are the sizes for the OS-independent
2002 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2003 debug version of the code includes the debug output trace mechanism and
2005 much larger code and data size.
2008 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
2009 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
2011 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
2012 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
2015 2) iASL Compiler/Disassembler and Tools:
2017 iASL: Fixed a problem with constant folding for fixed-length constant
2018 expressions. The constant-folding code was not being invoked for constant
2019 expressions that allow the use of type 3/4/5 opcodes to generate
2021 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
2023 in the generation of invalid AML bytecode. ACPICA BZ 970.
2025 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
2026 apparently automatically emit some of the necessary externals. This
2028 handles these versions in order to eliminate generation warnings.
2030 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
2032 Disassembler: Add support to decode _PLD buffers. The decoded buffer
2034 within comments in the output file.
2036 Debugger: Fixed a regression with the "Threads" command where
2037 AE_BAD_PARAMETER was always returned.
2039 ----------------------------------------
2040 11 July 2012. Summary of changes for version 20120711:
2042 1) ACPICA Kernel-resident Subsystem:
2044 Fixed a possible fault in the return package object repair code. Fixes a
2045 problem that can occur when a lone package object is wrapped with an
2047 package object in order to force conformance to the ACPI specification.
2049 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
2053 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
2054 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
2055 ARB_DIS bit must be implemented in the host-dependent C3 processor power
2057 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
2059 Intel and other vendors. (for Intel: ICH4-M and earlier)
2061 This change removes the code to disable/enable bus master arbitration
2063 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
2065 resume problems on some machines. The change has been in use for over
2069 Implemented two new external interfaces to support host-directed dynamic
2071 table load and unload. They are intended to simplify the host
2073 of hot-plug support:
2074 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
2075 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
2077 See the ACPICA reference for additional details. Adds one new file,
2078 components/tables/tbxfload.c
2080 Implemented and deployed two new interfaces for errors and warnings that
2082 known to be caused by BIOS/firmware issues:
2083 AcpiBiosError: Prints "ACPI Firmware Error" message.
2084 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
2085 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
2087 and FADT errors. Additional deployment to be completed as appropriate in
2089 future. The associated conditional macros are ACPI_BIOS_ERROR and
2090 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
2095 Implicit notify support: ensure that no memory allocation occurs within a
2096 critical region. This fix moves a memory allocation outside of the time
2098 spinlock is held. Fixes issues on systems that do not allow this
2102 Split exception code utilities and tables into a new file,
2105 Example Code and Data Size: These are the sizes for the OS-independent
2106 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2108 version of the code includes the debug output trace mechanism and has a
2110 larger code and data size.
2113 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
2114 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
2116 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
2117 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
2120 2) iASL Compiler/Disassembler and Tools:
2122 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
2126 Debugger: Enhanced the "tables" command to emit additional information
2128 the current set of ACPI tables, including the owner ID and flags decode.
2130 Debugger: Reimplemented the "unload" command to use the new
2131 AcpiUnloadParentTable external interface. This command was disable
2133 due to need for an unload interface.
2135 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
2137 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
2139 ----------------------------------------
2140 20 June 2012. Summary of changes for version 20120620:
2143 1) ACPICA Kernel-resident Subsystem:
2145 Implemented support to expand the "implicit notify" feature to allow
2147 devices to be notified by a single GPE. This feature automatically
2149 runtime device notification in the absence of a BIOS-provided GPE control
2150 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
2152 provided by ACPICA for Windows compatibility, and is a workaround for
2155 code errors. See the description of the AcpiSetupGpeForWake interface in
2157 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
2159 Changed some comments and internal function names to simplify and ensure
2160 correctness of the Linux code translation. No functional changes.
2162 Example Code and Data Size: These are the sizes for the OS-independent
2163 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2165 version of the code includes the debug output trace mechanism and has a
2167 larger code and data size.
2170 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
2171 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
2173 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
2174 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
2177 2) iASL Compiler/Disassembler and Tools:
2179 Disassembler: Added support to emit short, commented descriptions for the
2181 predefined names in order to improve the readability of the disassembled
2182 output. ACPICA BZ 959. Changes include:
2183 1) Emit descriptions for all standard predefined names (_INI, _STA,
2186 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
2187 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
2190 AcpiSrc: Fixed several long-standing Linux code translation issues.
2192 descriptions in function headers are now translated properly to lower
2195 underscores. ACPICA BZ 961. Also fixes translation problems such as
2201 local_fADT -> local_FADT
2202 execute_oSI -> execute_OSI
2204 iASL: Fixed a problem where null bytes were inadvertently emitted into
2208 iASL: Added the existing debug options to the standard help screen. There
2210 no longer two different help screens. ACPICA BZ 957.
2212 AcpiHelp: Fixed some typos in the various predefined name descriptions.
2214 expand some of the descriptions where appropriate.
2216 iASL: Fixed the -ot option (display compile times/statistics). Was not
2218 properly for standard output; only worked for the debug file case.
2220 ----------------------------------------
2221 18 May 2012. Summary of changes for version 20120518:
2224 1) ACPICA Core Subsystem:
2226 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
2228 to block until asynchronous events such as notifies and GPEs have
2230 Within ACPICA, it is only called before a notify or GPE handler is
2231 removed/uninstalled. It also may be useful for the host OS within related
2232 drivers such as the Embedded Controller driver. See the ACPICA reference
2234 additional information. ACPICA BZ 868.
2236 ACPI Tables: Added a new error message for a possible overflow failure
2238 the conversion of FADT 32-bit legacy register addresses to internal
2241 bit GAS structure representation. The GAS has a one-byte "bit length"
2243 thus limiting the register length to 255 bits. ACPICA BZ 953.
2245 Example Code and Data Size: These are the sizes for the OS-independent
2246 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2248 version of the code includes the debug output trace mechanism and has a
2250 larger code and data size.
2253 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2254 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
2256 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
2257 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
2260 2) iASL Compiler/Disassembler and Tools:
2262 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
2264 This keyword was added late in the ACPI 5.0 release cycle and was not
2265 implemented until now.
2267 Disassembler: Added support for Operation Region externals. Adds missing
2268 support for operation regions that are defined in another table, and
2269 referenced locally via a Field or BankField ASL operator. Now generates
2271 correct External statement.
2273 Disassembler: Several additional fixes for the External() statement
2275 related to some ASL operators. Also, order the External() statements
2276 alphabetically in the disassembler output. Fixes the External()
2279 the Create* field, Alias, and Scope operators:
2280 1) Create* buffer field operators - fix type mismatch warning on
2282 2) Alias - implement missing External support
2283 3) Scope - fix to make sure all necessary externals are emitted.
2285 iASL: Improved pathname support. For include files, merge the prefix
2287 with the file pathname and eliminate unnecessary components. Convert
2288 backslashes in all pathnames to forward slashes, for readability. Include
2290 pathname changes affect both #include and Include() type operators.
2292 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
2294 of a valid line by inserting a newline and then returning the EOF during
2296 next call to GetNextLine. Prevents the line from being ignored due to EOF
2299 iASL: Implemented some changes to enhance the IDE support (-vi option.)
2301 and Warning messages are now correctly recognized for both the source
2303 browser and the global error and warning counts.
2305 ----------------------------------------
2306 20 April 2012. Summary of changes for version 20120420:
2309 1) ACPICA Core Subsystem:
2311 Implemented support for multiple notify handlers. This change adds
2314 allow multiple system and device notify handlers on Device, Thermal Zone,
2316 Processor objects. This can simplify the host OS notification
2318 Also re-worked and restructured the entire notify support code to
2320 handler installation, handler removal, notify event queuing, and notify
2321 dispatch to handler(s). Note: there can still only be two global notify
2322 handlers - one for system notifies and one for device notifies. There are
2324 changes to the existing handler install/remove interfaces. Lin Ming, Bob
2325 Moore, Rafael Wysocki.
2327 Fixed a regression in the package repair code where the object reference
2328 count was calculated incorrectly. Regression was introduced in the commit
2329 "Support to add Package wrappers".
2331 Fixed a couple possible memory leaks in the AML parser, in the error
2333 path. Jesper Juhl, Lin Ming.
2335 Example Code and Data Size: These are the sizes for the OS-independent
2336 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2337 debug version of the code includes the debug output trace mechanism and
2339 much larger code and data size.
2342 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2343 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2345 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2346 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
2349 2) iASL Compiler/Disassembler and Tools:
2351 iASL: Fixed a problem with the resource descriptor support where the
2353 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
2354 included in cumulative descriptor offset, resulting in incorrect values
2356 resource tags within resource descriptors appearing after a
2358 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
2360 iASL and Preprocessor: Implemented full support for the #line directive
2362 correctly track original source file line numbers through the .i
2364 output file - for error and warning messages.
2366 iASL: Expand the allowable byte constants for address space IDs.
2368 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
2369 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
2371 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
2373 iASL: Add option to completely disable the preprocessor (-Pn).
2375 iASL: Now emit all error/warning messages to standard error (stderr) by
2376 default (instead of the previous stdout).
2378 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
2380 for resource descriptor offset fix above. Update/cleanup error output
2381 routines. Enable and send iASL errors/warnings to an error logfile
2382 (error.txt). Send all other iASL output to a logfile (compiler.txt).
2384 several extraneous "unrecognized operator" messages.
2386 ----------------------------------------
2387 20 March 2012. Summary of changes for version 20120320:
2390 1) ACPICA Core Subsystem:
2392 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
2393 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
2395 does not execute these methods, and therefore these methods are often
2396 untested. It has been seen on some systems where the execution of these
2397 methods causes errors and also prevents the machine from entering S5. It
2399 therefore suggested that host operating systems do not execute these
2401 by default. In the future, perhaps these methods can be optionally
2403 based on the age of the system and/or what is the newest version of
2405 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
2407 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
2410 Fixed a problem where the length of the local/common FADT was set too
2412 The local FADT table length cannot be set to the common length until the
2413 original length has been examined. There is code that checks the table
2415 and sets various fields appropriately. This can affect older machines
2417 early FADT versions. For example, this can cause inadvertent writes to
2419 CST_CNT register. Julian Anastasov.
2421 Fixed a mapping issue related to a physical table override. Use the
2423 mapping mechanism for tables loaded via the physical override OSL
2425 This allows for early mapping before the virtual memory manager is
2427 Thomas Renninger, Bob Moore.
2429 Enhanced the automatic return-object repair code: Repair a common problem
2431 predefined methods that are defined to return a variable-length Package
2433 sub-objects. If there is only one sub-object, some BIOS ASL code
2435 simply returns the single object instead of a Package with one sub-
2437 This new support will repair this error by wrapping a Package object
2439 the original object, creating the correct and expected Package with one
2441 object. Names that can be repaired in this manner include: _ALR, _CSD,
2443 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
2446 Changed the exception code returned for invalid ACPI paths passed as
2447 parameters to external interfaces such as AcpiEvaluateObject. Was
2448 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
2450 Example Code and Data Size: These are the sizes for the OS-independent
2451 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2453 version of the code includes the debug output trace mechanism and has a
2455 larger code and data size.
2458 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
2459 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2461 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2462 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2465 2) iASL Compiler/Disassembler and Tools:
2467 iASL: Added the infrastructure and initial implementation of a integrated
2469 like preprocessor. This will simplify BIOS development process by
2471 the need for a separate preprocessing step during builds. On Windows, it
2473 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
2474 features including full #define() macro support are still under
2476 These preprocessor directives are supported:
2489 In addition, these new command line options are supported:
2490 -D <symbol> Define symbol for preprocessor use
2491 -li Create preprocessed output file (*.i)
2492 -P Preprocess only and create preprocessor output file (*.i)
2494 Table Compiler: Fixed a problem where the equals operator within an
2496 did not work properly.
2498 Updated iASL to use the current versions of Bison/Flex. Updated the
2500 project file to invoke these tools from the standard location. ACPICA BZ
2503 Flex for Windows: V2.5.4
2504 Bison for Windows: V2.4.1
2506 ----------------------------------------
2507 15 February 2012. Summary of changes for version 20120215:
2510 1) ACPICA Core Subsystem:
2512 There have been some major changes to the sleep/wake support code, as
2513 described below (a - e).
2515 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
2516 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
2517 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
2519 time the _BFS method is called and the _WAK method is called. NOTE: all
2521 must update their wake/resume code or else sleep/wake will not work
2525 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
2527 method. Some machines require that the GPEs are enabled before the _WAK
2529 is executed. Thomas Renninger.
2531 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
2533 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
2535 determine whether the system is rebooting or resuming. Matthew Garrett.
2537 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
2539 match the ACPI specification requirement. Rafael Wysocki.
2541 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
2542 registers within the V5 FADT. This support adds two new files:
2543 hardware/hwesleep.c implements the support for the new registers. Moved
2545 sleep/wake external interfaces to hardware/hwxfsleep.c.
2548 Added a new OSL interface for ACPI table overrides,
2549 AcpiOsPhysicalTableOverride. This interface allows the host to override a
2550 table via a physical address, instead of the logical address required by
2551 AcpiOsTableOverride. This simplifies the host implementation. Initial
2552 implementation by Thomas Renninger. The ACPICA implementation creates a
2554 shared function for table overrides that attempts both a logical and a
2557 Expanded the OSL memory read/write interfaces to 64-bit data
2558 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
2559 transfer support for GAS register structures passed to AcpiRead and
2562 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
2564 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
2566 See the ACPICA reference for details. ACPICA BZ 942. This option removes
2568 10% of the code and 5% of the static data, and the following hardware
2570 features become unavailable:
2571 PM Event and Control registers
2572 SCI interrupt (and handler)
2574 General Purpose Events (GPEs)
2577 FACS table (Waking vectors and Global Lock)
2579 Updated the unix tarball directory structure to match the ACPICA git
2581 tree. This ensures that the generic unix makefiles work properly (in
2582 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
2585 Updated the return value of the _REV predefined method to integer value 5
2587 reflect ACPI 5.0 support.
2589 Moved the external ACPI PM timer interface prototypes to the public
2591 file where they belong.
2593 Example Code and Data Size: These are the sizes for the OS-independent
2594 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2596 version of the code includes the debug output trace mechanism and has a
2598 larger code and data size.
2601 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
2602 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
2604 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
2605 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2608 2) iASL Compiler/Disassembler and Tools:
2610 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
2611 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
2612 incorrectly displayed.
2614 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
2617 ----------------------------------------
2618 11 January 2012. Summary of changes for version 20120111:
2621 1) ACPICA Core Subsystem:
2623 Implemented a new mechanism to allow host device drivers to check for
2625 range conflicts with ACPI Operation Regions. Both SystemMemory and
2627 address spaces are supported. A new external interface,
2628 AcpiCheckAddressRange,
2629 allows drivers to check an address range against the ACPI namespace. See
2631 ACPICA reference for additional details. Adds one new file,
2632 utilities/utaddress.c. Lin Ming, Bob Moore.
2634 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
2637 Status registers, update the ACPI 5.0 flags, and update internal data
2638 structures to handle an FADT larger than 256 bytes. The size of the ACPI
2642 Updated all ACPICA copyrights and signons to 2012. Added the 2012
2644 all module headers and signons, including the standard Linux header. This
2645 affects virtually every file in the ACPICA core subsystem, iASL compiler,
2647 all ACPICA utilities.
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.
2657 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
2658 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
2660 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
2661 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
2664 2) iASL Compiler/Disassembler and Tools:
2666 Disassembler: fixed a problem with the automatic resource tag generation
2667 support. Fixes a problem where the resource tags are inadvertently not
2668 constructed if the table being disassembled contains external references
2670 control methods. Moved the actual construction of the tags to after the
2672 namespace is constructed (after 2nd parse is invoked due to external
2674 method references.) ACPICA BZ 941.
2676 Table Compiler: Make all "generic" operators caseless. These are the
2678 like UINT8, String, etc. Making these caseless improves ease-of-use.
2682 ----------------------------------------
2683 23 November 2011. Summary of changes for version 20111123:
2685 0) ACPI 5.0 Support:
2687 This release contains full support for the ACPI 5.0 specification, as
2690 Reduced Hardware Support:
2691 -------------------------
2693 This support allows for ACPI systems without the usual ACPI hardware.
2695 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
2697 not attempt to initialize or use any of the usual ACPI hardware. Note,
2699 this flag is set, all of the following ACPI hardware is assumed to be not
2700 present and is not initialized or accessed:
2702 General Purpose Events (GPEs)
2703 Fixed Events (PM1a/PM1b and PM Control)
2704 Power Management Timer and Console Buttons (power/sleep)
2705 Real-time Clock Alarm
2707 System Control Interrupt (SCI)
2708 The FACS is assumed to be non-existent
2713 All new tables and updates to existing tables are fully supported in the
2714 ACPICA headers (for use by device drivers), the disassembler, and the
2716 Data Table Compiler. ACPI 5.0 defines these new tables:
2718 BGRT /* Boot Graphics Resource Table */
2719 DRTM /* Dynamic Root of Trust for Measurement table */
2720 FPDT /* Firmware Performance Data Table */
2721 GTDT /* Generic Timer Description Table */
2722 MPST /* Memory Power State Table */
2723 PCCT /* Platform Communications Channel Table */
2724 PMTT /* Platform Memory Topology Table */
2725 RASF /* RAS Feature table */
2727 Operation Regions/SpaceIDs:
2728 ---------------------------
2730 All new operation regions are fully supported by the iASL compiler, the
2731 disassembler, and the ACPICA runtime code (for dispatch to region
2733 The new operation region Space IDs are:
2738 Resource Descriptors:
2739 ---------------------
2741 All new ASL resource descriptors are fully supported by the iASL
2744 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
2746 all new predefined resource tags). New descriptors are:
2755 ASL/AML Operators, New and Modified:
2756 ------------------------------------
2758 One new operator is added, the Connection operator, which is used to
2760 a GeneralPurposeIo or GenericSerialBus resource descriptor with
2762 field objects within an operation region. Several new protocols are
2764 with the AccessAs operator. All are fully supported by the iASL compiler,
2765 disassembler, and runtime ACPICA AML interpreter:
2767 Connection // Declare Field Connection
2769 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
2770 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
2772 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
2773 RawDataBuffer // Data type for Vendor Data
2776 Predefined ASL/AML Objects:
2777 ---------------------------
2779 All new predefined objects/control-methods are supported by the iASL
2781 and the ACPICA runtime validation/repair (arguments and return values.)
2783 predefined names include the following:
2785 Standard Predefined Names (Objects or Control Methods):
2786 _AEI, _CLS, _CPC, _CWS, _DEP,
2787 _DLM, _EVT, _GCP, _CRT, _GWS,
2788 _HRV, _PRE, _PSE, _SRT, _SUB.
2790 Resource Tags (Names used to access individual fields within resource
2792 _DBT, _DPL, _DRS, _END, _FLC,
2793 _IOR, _LIN, _MOD, _PAR, _PHA,
2794 _PIN, _PPI, _POL, _RXL, _SLV,
2795 _SPE, _STB, _TXL, _VEN.
2797 ACPICA External Interfaces:
2798 ---------------------------
2800 Several new interfaces have been defined for use by ACPI-related device
2801 drivers and other host OS services:
2803 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
2805 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
2806 provided by the BIOS. They are intended to be used in conjunction with
2808 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
2809 mutual exclusion with the AML code/interpreter.
2811 AcpiGetEventResources: Returns the (formatted) resource descriptors as
2813 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
2815 resource descriptors associated with hardware-reduced platform events,
2817 to the AcpiGetCurrentResources interface.
2819 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
2820 operation regions, information about the Connection() object and any
2822 length information is passed to the region handler within the Context
2825 AcpiBufferToResource: This interface converts a raw AML buffer containing
2827 resource template or resource descriptor to the ACPI_RESOURCE internal
2829 suitable for use by device drivers. Can be used by an operation region
2831 to convert the Connection() buffer object into a ACPI_RESOURCE.
2833 Miscellaneous/Tools/TestSuites:
2834 -------------------------------
2836 Support for extended _HID names (Four alpha characters instead of three).
2837 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
2838 Support for ACPI 5.0 features in the ASLTS test suite.
2839 Fully updated documentation (ACPICA and iASL reference documents.)
2841 ACPI Table Definition Language:
2842 -------------------------------
2844 Support for this language was implemented and released as a subsystem of
2846 iASL compiler in 2010. (See the iASL compiler User Guide.)
2849 Non-ACPI 5.0 changes for this release:
2850 --------------------------------------
2852 1) ACPICA Core Subsystem:
2854 Fix a problem with operation region declarations where a failure can
2857 the region name and an argument that evaluates to an object (such as the
2858 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
2861 Do not abort an ACPI table load if an invalid space ID is found within.
2863 will be caught later if the offending method is executed. ACPICA BZ 925.
2865 Fixed an issue with the FFixedHW space ID where the ID was not always
2866 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
2868 Fixed a problem with the 32-bit generation of the unix-specific OSL
2869 (osunixxf.c). Lin Ming, ACPICA BZ 936.
2871 Several changes made to enable generation with the GCC 4.6 compiler.
2875 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
2877 field registers out-of-range.
2879 2) iASL Compiler/Disassembler and Tools:
2881 iASL: Implemented the __PATH__ operator, which returns the full pathname
2883 the current source file.
2885 AcpiHelp: Automatically display expanded keyword information for all ASL
2888 Debugger: Add "Template" command to disassemble/dump resource template
2891 Added a new master script to generate and execute the ASLTS test suite.
2892 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
2894 iASL: Fix problem with listing generation during processing of the
2896 operator where AML listing was disabled until the entire Switch block was
2899 iASL: Improve support for semicolon statement terminators. Fix "invalid
2900 character" message for some cases when the semicolon is used. Semicolons
2902 now allowed after every <Term> grammar element. ACPICA BZ 927.
2904 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
2907 Disassembler: Fix problem with disassembly of the DataTableRegion
2909 where an inadvertent "Unhandled deferred opcode" message could be
2912 3) Example Code and Data Size
2914 These are the sizes for the OS-independent acpica.lib produced by the
2915 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
2916 includes the debug output trace mechanism and has a much larger code and
2921 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2922 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2924 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
2925 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
2927 ----------------------------------------
2928 22 September 2011. Summary of changes for version 20110922:
2932 Support for ACPI 5.0 in ACPICA has been underway for several months and
2934 be released at the same time that ACPI 5.0 is officially released.
2936 The ACPI 5.0 specification is on track for release in the next few
2939 1) ACPICA Core Subsystem:
2941 Fixed a problem where the maximum sleep time for the Sleep() operator was
2942 intended to be limited to two seconds, but was inadvertently limited to
2946 Linux and Unix makefiles: Added header file dependencies to ensure
2948 generation of ACPICA core code and utilities. Also simplified the
2950 considerably through the use of the vpath variable to specify search
2954 2) iASL Compiler/Disassembler and Tools:
2956 iASL: Implemented support to check the access length for all fields
2958 access named Resource Descriptor fields. For example, if a resource field
2960 defined to be two bits, a warning is issued if a CreateXxxxField() is
2962 with an incorrect bit length. This is implemented for all current
2964 descriptor names. ACPICA BZ 930.
2966 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
2970 iASL: Fixed a couple of issues associated with variable-length package
2971 objects. 1) properly handle constants like One, Ones, Zero -- do not make
2973 VAR_PACKAGE when these are used as a package length. 2) Allow the
2975 opcode (in addition to PACKAGE) when validating object types for
2979 iASL: Emit statistics for all output files (instead of just the ASL input
2981 AML output). Includes listings, hex files, etc.
2983 iASL: Added -G option to the table compiler to allow the compilation of
2985 ACPI tables. The only part of a table that is required is the standard
2990 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
2992 which also adds correct 64-bit support. Also, now all output filenames
2994 completely lower case.
2996 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
2997 loading table files. A warning is issued for any such tables. The only
2998 exception is an FADT. This also fixes a possible fault when attempting to
3000 non-AML tables. ACPICA BZ 932.
3002 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
3004 missing table terminator could cause a fault when using the -p option.
3006 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
3009 3) Example Code and Data Size
3011 These are the sizes for the OS-independent acpica.lib produced by the
3012 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
3013 includes the debug output trace mechanism and has a much larger code and
3017 Previous Release (VC 9.0):
3018 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3019 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3020 Current Release (VC 9.0):
3021 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3022 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3025 ----------------------------------------
3026 23 June 2011. Summary of changes for version 20110623:
3028 1) ACPI CA Core Subsystem:
3030 Updated the predefined name repair mechanism to not attempt repair of a
3032 return object if a _PSS object is present. We can only sort the _TSS
3034 package if there is no _PSS within the same scope. This is because if
3037 present, the ACPI specification dictates that the _TSS Power Dissipation
3039 is to be ignored, and therefore some BIOSs leave garbage values in the
3041 Power field(s). In this case, it is best to just return the _TSS package
3043 is. Reported by, and fixed with assistance from Fenghua Yu.
3045 Added an option to globally disable the control method return value
3047 and repair. This runtime option can be used to disable return value
3050 this is causing a problem on a particular machine. Also added an option
3052 AcpiExec (-dr) to set this disable flag.
3054 All makefiles and project files: Major changes to improve generation of
3056 tools. ACPICA BZ 912:
3057 Reduce default optimization levels to improve compatibility
3058 For Linux, add strict-aliasing=0 for gcc 4
3059 Cleanup and simplify use of command line defines
3060 Cleanup multithread library support
3061 Improve usage messages
3063 Linux-specific header: update handling of THREAD_ID and pthread. For the
3065 bit case, improve casting to eliminate possible warnings, especially with
3069 Example Code and Data Size: These are the sizes for the OS-independent
3070 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3072 version of the code includes the debug output trace mechanism and has a
3074 larger code and data size.
3076 Previous Release (VC 9.0):
3077 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
3078 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3079 Current Release (VC 9.0):
3080 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3081 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3083 2) iASL Compiler/Disassembler and Tools:
3085 With this release, a new utility named "acpihelp" has been added to the
3087 package. This utility summarizes the ACPI specification chapters for the
3089 and AML languages. It generates under Linux/Unix as well as Windows, and
3090 provides the following functionality:
3091 Find/display ASL operator(s) -- with description and syntax.
3092 Find/display ASL keyword(s) -- with exact spelling and descriptions.
3093 Find/display ACPI predefined name(s) -- with description, number
3094 of arguments, and the return value data type.
3095 Find/display AML opcode name(s) -- with opcode, arguments, and
3097 Decode/display AML opcode -- with opcode name, arguments, and
3100 Service Layers: Make multi-thread support configurable. Conditionally
3102 the multi-thread support so that threading libraries will not be linked
3105 necessary. The only tool that requires multi-thread support is AcpiExec.
3107 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
3109 Bison appear to want the interface to yyerror to be a const char * (or at
3110 least this is a problem when generating iASL on some systems.) ACPICA BZ
3114 Tools: Fix for systems where O_BINARY is not defined. Only used for
3116 versions of the tools.
3118 ----------------------------------------
3119 27 May 2011. Summary of changes for version 20110527:
3121 1) ACPI CA Core Subsystem:
3123 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
3125 signature. Now, only allow SSDT, OEMx, and a null signature. History:
3126 1) Originally, we checked the table signature for "SSDT" or "PSDT".
3127 (PSDT is now obsolete.)
3128 2) We added support for OEMx tables, signature "OEM" plus a fourth
3129 "don't care" character.
3130 3) Valid tables were encountered with a null signature, so we just
3131 gave up on validating the signature, (05/2008).
3132 4) We encountered non-AML tables such as the MADT, which caused
3133 interpreter errors and kernel faults. So now, we once again allow
3134 only SSDT, OEMx, and now, also a null signature. (05/2011).
3136 Added the missing _TDL predefined name to the global name list in order
3138 enable validation. Affects both the core ACPICA code and the iASL
3141 Example Code and Data Size: These are the sizes for the OS-independent
3142 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3144 version of the code includes the debug output trace mechanism and has a
3146 larger code and data size.
3148 Previous Release (VC 9.0):
3149 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
3150 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
3151 Current Release (VC 9.0):
3152 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
3153 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3155 2) iASL Compiler/Disassembler and Tools:
3157 Debugger/AcpiExec: Implemented support for "complex" method arguments on
3159 debugger command line. This adds support beyond simple integers --
3161 Strings, Buffers, and Packages. Includes support for nested packages.
3162 Increased the default command line buffer size to accommodate these
3164 See the ACPICA reference for details and syntax. ACPICA BZ 917.
3166 Debugger/AcpiExec: Implemented support for "default" method arguments for
3168 Execute/Debug command. Now, the debugger will always invoke a control
3170 with the required number of arguments -- even if the command line
3172 none or insufficient arguments. It uses default integer values for any
3174 arguments. Also fixes a bug where only six method arguments maximum were
3175 supported instead of the required seven.
3177 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
3179 also return status in order to prevent buffer overruns. See the ACPICA
3180 reference for details and syntax. ACPICA BZ 921
3182 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
3183 makefiles to simplify support for the two different but similar parser
3184 generators, bison and yacc.
3186 Updated the generic unix makefile for gcc 4. The default gcc version is
3188 expected to be 4 or greater, since options specific to gcc 4 are used.
3190 ----------------------------------------
3191 13 April 2011. Summary of changes for version 20110413:
3193 1) ACPI CA Core Subsystem:
3195 Implemented support to execute a so-called "orphan" _REG method under the
3197 device. This change will force the execution of a _REG method underneath
3200 device even if there is no corresponding operation region of type
3201 EmbeddedControl. Fixes a problem seen on some machines and apparently is
3202 compatible with Windows behavior. ACPICA BZ 875.
3204 Added more predefined methods that are eligible for automatic NULL
3206 element removal. This change adds another group of predefined names to
3209 of names that can be repaired by having NULL package elements dynamically
3210 removed. This group are those methods that return a single variable-
3212 package containing simple data types such as integers, buffers, strings.
3214 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
3217 and _TZD. ACPICA BZ 914.
3219 Split and segregated all internal global lock functions to a new file,
3222 Updated internal address SpaceID for DataTable regions. Moved this
3225 id in preparation for ACPI 5.0 changes that will include some new space
3228 change should not affect user/host code.
3230 Example Code and Data Size: These are the sizes for the OS-independent
3232 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
3234 the code includes the debug output trace mechanism and has a much larger
3239 Previous Release (VC 9.0):
3240 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
3241 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
3242 Current Release (VC 9.0):
3243 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
3244 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
3246 2) iASL Compiler/Disassembler and Tools:
3248 iASL/DTC: Major update for new grammar features. Allow generic data types
3250 custom ACPI tables. Field names are now optional. Any line can be split
3252 multiple lines using the continuation char (\). Large buffers now use
3254 continuation character(s) and no colon on the continuation lines. See the
3256 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
3259 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
3261 Since the parser stuffs a "zero" as the return value for these statements
3264 the underlying AML grammar), they were seen as "return with value" by the
3266 semantic checking. They are now seen correctly as "null" return
3269 iASL: Check if a_REG declaration has a corresponding Operation Region.
3271 check for each _REG to ensure that there is in fact a corresponding
3273 region declaration in the same scope. If not, the _REG method is not very
3275 since it probably won't be executed. ACPICA BZ 915.
3277 iASL/DTC: Finish support for expression evaluation. Added a new
3280 that implements c-style operator precedence and parenthesization. ACPICA
3284 Disassembler/DTC: Remove support for () and <> style comments in data
3287 that DTC has full expression support, we don't want to have comment
3290 start with a parentheses or a less-than symbol. Now, only the standard /*
3293 comments are supported, as well as the bracket [] comments.
3295 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
3297 headers in the acpidump file. Update the header validation to support
3299 tables. Problem introduced in previous AcpiXtract version in the change
3301 support "wrong checksum" error messages emitted by acpidump utility.
3303 iASL: Add a * option to generate all template files (as a synonym for
3307 "iasl -T *" or "iasl -T ALL".
3309 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
3311 abort the compiler on "fatal" errors, simply should abort the current
3313 This allows multiple compiles with a single (possibly wildcard) compiler
3316 ----------------------------------------
3317 16 March 2011. Summary of changes for version 20110316:
3319 1) ACPI CA Core Subsystem:
3321 Fixed a problem caused by a _PRW method appearing at the namespace root
3323 during the setup of wake GPEs. A fault could occur if a _PRW directly
3326 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
3328 Implemented support for "spurious" Global Lock interrupts. On some
3330 global lock interrupt can occur without the pending flag being set. Upon
3333 interrupt, we now ensure that a thread is actually waiting for the lock
3335 signaling GL availability. Rafael Wysocki, Bob Moore.
3337 Example Code and Data Size: These are the sizes for the OS-independent
3339 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
3341 the code includes the debug output trace mechanism and has a much larger
3346 Previous Release (VC 9.0):
3347 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3348 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3349 Current Release (VC 9.0):
3350 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
3351 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
3353 2) iASL Compiler/Disassembler and Tools:
3355 Implemented full support for the "SLIC" ACPI table. Includes support in
3357 header files, disassembler, table compiler, and template generator. Bob
3361 AcpiXtract: Correctly handle embedded comments and messages from
3363 Apparently some or all versions of acpidump will occasionally emit a
3366 "Wrong checksum", etc., into the dump file. This was causing problems for
3367 AcpiXtract. ACPICA BZ 905.
3369 iASL: Fix the Linux makefile by removing an inadvertent double file
3373 AcpiExec: Update installation of operation region handlers. Install one
3375 for a user-defined address space. This is used by the ASL test suite
3378 ----------------------------------------
3379 11 February 2011. Summary of changes for version 20110211:
3381 1) ACPI CA Core Subsystem:
3383 Added a mechanism to defer _REG methods for some early-installed
3385 Most user handlers should be installed before call to
3386 AcpiEnableSubsystem.
3387 However, Event handlers and region handlers should be installed after
3388 AcpiInitializeObjects. Override handlers for the "default" regions should
3390 installed early, however. This change executes all _REG methods for the
3391 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
3392 chicken/egg issues between them. ACPICA BZ 848.
3394 Implemented an optimization for GPE detection. This optimization will
3396 ignore GPE registers that contain no enabled GPEs -- there is no need to
3397 read the register since this information is available internally. This
3398 becomes more important on machines with a large GPE space. ACPICA
3400 884. Lin Ming. Suggestion from Joe Liu.
3402 Removed all use of the highly unreliable FADT revision field. The
3404 number in the FADT has been found to be completely unreliable and cannot
3406 trusted. Only the actual table length can be used to infer the version.
3408 change updates the ACPICA core and the disassembler so that both no
3410 even look at the FADT version and instead depend solely upon the FADT
3413 Fix an unresolved name issue for the no-debug and no-error-message source
3414 generation cases. The _AcpiModuleName was left undefined in these cases,
3416 it is actually needed as a parameter to some interfaces. Define
3417 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
3419 Split several large files (makefiles and project files updated)
3420 utglobal.c -> utdecode.c
3421 dbcomds.c -> dbmethod.c dbnames.c
3422 dsopcode.c -> dsargs.c dscontrol.c
3423 dsload.c -> dsload2.c
3424 aslanalyze.c -> aslbtypes.c aslwalks.c
3426 Example Code and Data Size: These are the sizes for the OS-independent
3427 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3428 debug version of the code includes the debug output trace mechanism and
3430 a much larger code and data size.
3432 Previous Release (VC 9.0):
3433 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3434 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3435 Current Release (VC 9.0):
3436 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3437 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3439 2) iASL Compiler/Disassembler and Tools:
3441 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
3442 These are useful C-style macros with the standard definitions. ACPICA
3445 iASL/DTC: Added support for integer expressions and labels. Support for
3447 expressions for all integer fields in all ACPI tables. Support for labels
3449 "generic" portions of tables such as UEFI. See the iASL reference manual.
3451 Debugger: Added a command to display the status of global handlers. The
3452 "handlers" command will display op region, fixed event, and miscellaneous
3453 global handlers. installation status -- and for op regions, whether
3455 or user-installed handler will be used.
3457 iASL: Warn if reserved method incorrectly returns a value. Many
3459 names are defined such that they do not return a value. If implemented as
3461 method, issue a warning if such a name explicitly returns a value. ACPICA
3464 iASL: Added detection of GPE method name conflicts. Detects a conflict
3466 there are two GPE methods of the form _Lxy and _Exy in the same scope.
3468 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
3470 iASL/DTC: Fixed a couple input scanner issues with comments and line
3471 numbers. Comment remover could get confused and miss a comment ending.
3473 a problem with line counter maintenance.
3475 iASL/DTC: Reduced the severity of some errors from fatal to error. There
3477 no need to abort on simple errors within a field definition.
3479 Debugger: Simplified the output of the help command. All help output now
3481 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
3483 ----------------------------------------
3484 12 January 2011. Summary of changes for version 20110112:
3486 1) ACPI CA Core Subsystem:
3488 Fixed a race condition between method execution and namespace walks that
3490 possibly cause a fault. The problem was apparently introduced in version
3491 20100528 as a result of a performance optimization that reduces the
3494 namespace walks upon method exit by using the delete_namespace_subtree
3495 function instead of the delete_namespace_by_owner function used
3497 Bug is a missing namespace lock in the delete_namespace_subtree function.
3498 dana.myers@oracle.com
3500 Fixed several issues and a possible fault with the automatic "serialized"
3501 method support. History: This support changes a method to "serialized" on
3503 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
3504 possibility that it cannot handle reentrancy. This fix repairs a couple
3506 issues seen in the field, especially on machines with many cores:
3508 1) Delete method children only upon the exit of the last thread,
3509 so as to not delete objects out from under other running threads
3510 (and possibly causing a fault.)
3511 2) Set the "serialized" bit for the method only upon the exit of the
3512 Last thread, so as to not cause deadlock when running threads
3514 3) Cleanup the use of the AML "MethodFlags" and internal method flags
3515 so that there is no longer any confusion between the two.
3517 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
3519 Debugger: Now lock the namespace for duration of a namespace dump.
3521 issues if the namespace is changing dynamically underneath the debugger.
3522 Especially affects temporary namespace nodes, since the debugger displays
3525 Updated the ordering of include files. The ACPICA headers should appear
3526 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
3528 any necessary compiler-specific defines, etc. Affects the ACPI-related
3532 Updated all ACPICA copyrights and signons to 2011. Added the 2011
3534 to all module headers and signons, including the Linux header. This
3536 virtually every file in the ACPICA core subsystem, iASL compiler, and all
3539 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
3540 project files for VC++ 6.0 are now obsolete. New project files can be
3542 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
3545 Example Code and Data Size: These are the sizes for the OS-independent
3546 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3547 debug version of the code includes the debug output trace mechanism and
3549 much larger code and data size.
3551 Previous Release (VC 6.0):
3552 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
3553 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
3554 Current Release (VC 9.0):
3555 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3556 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3558 2) iASL Compiler/Disassembler and Tools:
3560 iASL: Added generic data types to the Data Table compiler. Add "generic"
3562 types such as UINT32, String, Unicode, etc., to simplify the generation
3564 platform-defined tables such as UEFI. Lin Ming.
3566 iASL: Added listing support for the Data Table Compiler. Adds listing
3568 (-l) to display actual binary output for each line of input code.
3570 ----------------------------------------
3571 09 December 2010. Summary of changes for version 20101209:
3573 1) ACPI CA Core Subsystem:
3575 Completed the major overhaul of the GPE support code that was begun in
3577 2010. Major features include: removal of _PRW execution in ACPICA (host
3578 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
3579 changes to existing interfaces, simplification of GPE handler operation,
3581 a handful of new interfaces:
3587 One new file, evxfgpe.c to consolidate all external GPE interfaces.
3589 See the ACPICA Programmer Reference for full details and programming
3590 information. See the new section 4.4 "General Purpose Event (GPE)
3592 for a full overview, and section 8.7 "ACPI General Purpose Event
3594 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
3596 Bob Moore, Rafael Wysocki.
3598 Implemented a new GPE feature for Windows compatibility, the "Implicit
3600 GPE Notify". This feature will automatically issue a Notify(2) on a
3602 when a Wake GPE is received if there is no corresponding GPE method or
3603 handler. ACPICA BZ 870.
3605 Fixed a problem with the Scope() operator during table parse and load
3607 During load phase (table load or method execution), the scope operator
3609 not enter the target into the namespace. Instead, it should open a new
3611 at the target location. Linux BZ 19462, ACPICA BZ 882.
3613 Example Code and Data Size: These are the sizes for the OS-independent
3614 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3615 debug version of the code includes the debug output trace mechanism and
3617 much larger code and data size.
3620 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
3621 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
3623 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3624 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3626 2) iASL Compiler/Disassembler and Tools:
3628 iASL: Relax the alphanumeric restriction on _CID strings. These strings
3630 "bus-specific" per the ACPI specification, and therefore any characters
3632 acceptable. The only checks that can be performed are for a null string
3634 perhaps for a leading asterisk. ACPICA BZ 886.
3636 iASL: Fixed a problem where a syntax error that caused a premature EOF
3637 condition on the source file emitted a very confusing error message. The
3638 premature EOF is now detected correctly. ACPICA BZ 891.
3640 Disassembler: Decode the AccessSize within a Generic Address Structure
3642 access, word access, etc.) Note, this field does not allow arbitrary bit
3643 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
3645 New: AcpiNames utility - Example namespace dump utility. Shows an example
3647 ACPICA configuration for a minimal namespace dump utility. Uses table and
3648 namespace managers, but no AML interpreter. Does not add any
3650 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
3651 partition and configure ACPICA. ACPICA BZ 883.
3653 AML Debugger: Increased the debugger buffer size for method return
3655 Was 4K, increased to 16K. Also enhanced error messages for debugger
3657 execution, including the buffer overflow case.
3659 ----------------------------------------
3660 13 October 2010. Summary of changes for version 20101013:
3662 1) ACPI CA Core Subsystem:
3664 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
3666 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
3667 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
3669 Changed the type of the predefined namespace object _TZ from ThermalZone
3671 Device. This was found to be confusing to the host software that
3673 the various thermal zones, since _TZ is not really a ThermalZone.
3676 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
3679 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
3680 string is "Windows 2006 SP2".
3682 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
3684 code automatically repairs _HID-related strings, this type of code is no
3685 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
3688 Example Code and Data Size: These are the sizes for the OS-independent
3689 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3690 debug version of the code includes the debug output trace mechanism and
3692 much larger code and data size.
3695 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3696 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3698 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3699 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3701 2) iASL Compiler/Disassembler and Tools:
3703 iASL: Implemented additional compile-time validation for _HID strings.
3705 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
3708 the string must be exactly seven or eight characters. For both _HID and
3710 strings, all characters must be alphanumeric. ACPICA BZ 874.
3712 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
3713 descriptors that are mostly or all zeros, with the expectation that they
3715 be filled in at runtime. iASL now allows this as long as there is a
3717 tag" (name) associated with the descriptor, which gives the ASL a handle
3718 needed to modify the descriptor. ACPICA BZ 873.
3720 Added single-thread support to the generic Unix application OSL.
3722 for iASL support, this change removes the use of semaphores in the
3724 threaded ACPICA tools/applications - increasing performance. The
3725 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
3726 option. ACPICA BZ 879.
3728 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
3730 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
3732 iASL: Moved all compiler messages to a new file, aslmessages.h.
3734 ----------------------------------------
3735 15 September 2010. Summary of changes for version 20100915:
3737 1) ACPI CA Core Subsystem:
3739 Removed the AcpiOsDerivePciId OSL interface. The various host
3741 of this function were not OS-dependent and are now obsolete and can be
3742 removed from all host OSLs. This function has been replaced by
3743 AcpiHwDerivePciId, which is now part of the ACPICA core code.
3744 AcpiHwDerivePciId has been implemented without recursion. Adds one new
3745 module, hwpci.c. ACPICA BZ 857.
3747 Implemented a dynamic repair for _HID and _CID strings. The following
3748 problems are now repaired at runtime: 1) Remove a leading asterisk in the
3749 string, and 2) the entire string is uppercased. Both repairs are in
3750 accordance with the ACPI specification and will simplify host driver
3754 The ACPI_THREAD_ID type is no longer configurable, internally it is now
3755 always UINT64. This simplifies the ACPICA code, especially any printf
3757 UINT64 is the only common data type for all thread_id types across all
3758 operating systems. It is now up to the host OSL to cast the native
3760 type to UINT64 before returning the value to ACPICA (via
3762 Lin Ming, Bob Moore.
3764 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
3766 keyword is not standard across compilers, and this type allows inline to
3768 configured on a per-compiler basis. Lin Ming.
3770 Made the system global AcpiGbl_SystemAwakeAndRunning publically
3772 Added an extern for this boolean in acpixf.h. Some hosts utilize this
3774 during suspend/restore operations. ACPICA BZ 869.
3776 All code that implements error/warning messages with the "ACPI:" prefix
3778 been moved to a new module, utxferror.c.
3780 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
3782 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
3784 Example Code and Data Size: These are the sizes for the OS-independent
3785 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3786 debug version of the code includes the debug output trace mechanism and
3788 much larger code and data size.
3791 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
3792 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
3794 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3795 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3797 2) iASL Compiler/Disassembler and Tools:
3799 iASL/Disassembler: Write ACPI errors to stderr instead of the output
3801 This keeps the output files free of random error messages that may
3803 from within the namespace/interpreter code. Used this opportunity to
3805 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
3806 866. Lin Ming, Bob Moore.
3808 Tools: update some printfs for ansi warnings on size_t. Handle width
3810 of size_t on 32-bit versus 64-bit generations. Lin Ming.
3812 ----------------------------------------
3813 06 August 2010. Summary of changes for version 20100806:
3815 1) ACPI CA Core Subsystem:
3817 Designed and implemented a new host interface to the _OSI support code.
3819 will allow the host to dynamically add or remove multiple _OSI strings,
3821 well as install an optional handler that is called for each _OSI
3823 Also added a new AML debugger command, 'osi' to display and modify the
3825 _OSI string table, and test support in the AcpiExec utility. See the
3827 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
3829 AcpiInstallInterface - Add an _OSI string.
3830 AcpiRemoveInterface - Delete an _OSI string.
3831 AcpiInstallInterfaceHandler - Install optional _OSI handler.
3833 AcpiOsValidateInterface - no longer used.
3835 source/components/utilities/utosi.c
3837 Re-introduced the support to enable multi-byte transfers for Embedded
3838 Controller (EC) operation regions. A reported problem was found to be a
3840 in the host OS, not in the multi-byte support. Previously, the maximum
3842 size passed to the EC operation region handler was a single byte. There
3844 often EC Fields larger than one byte that need to be transferred, and it
3846 useful for the EC driver to lock these as a single transaction. This
3848 enables single transfers larger than 8 bits. This effectively changes the
3849 access to the EC space from ByteAcc to AnyAcc, and will probably require
3850 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
3852 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
3854 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
3855 prototype in acpiosxf.h had the output value pointer as a (void *).
3856 It should be a (UINT64 *). This may affect some host OSL code.
3858 Fixed a couple problems with the recently modified Linux makefiles for
3860 and AcpiExec. These new makefiles place the generated object files in the
3861 local directory so that there can be no collisions between the files that
3863 shared between them that are compiled with different options.
3865 Example Code and Data Size: These are the sizes for the OS-independent
3866 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3867 debug version of the code includes the debug output trace mechanism and
3869 much larger code and data size.
3872 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3873 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
3875 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
3876 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
3878 2) iASL Compiler/Disassembler and Tools:
3880 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
3882 namespace from and disassemble an entire group of AML files. Useful for
3883 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
3885 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
3887 iASL: Allow multiple invocations of -e option. This change allows
3889 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
3893 ----------------------------------------
3894 02 July 2010. Summary of changes for version 20100702:
3896 1) ACPI CA Core Subsystem:
3898 Implemented several updates to the recently added GPE reference count
3899 support. The model for "wake" GPEs is changing to give the host OS
3901 control of these GPEs. Eventually, the ACPICA core will not execute any
3903 methods, since the host already must execute them. Also, additional
3905 were made to help ensure that the reference counts are kept in proper
3906 synchronization with reality. Rafael J. Wysocki.
3908 1) Ensure that GPEs are not enabled twice during initialization.
3909 2) Ensure that GPE enable masks stay in sync with the reference count.
3910 3) Do not inadvertently enable GPEs when writing GPE registers.
3911 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
3912 interface. This interface will set or clear individual GPEs for wakeup.
3913 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
3915 are now used for "runtime" GPEs only.
3917 Changed the behavior of the GPE install/remove handler interfaces. The
3920 no longer disabled during this process, as it was found to cause problems
3922 some machines. Rafael J. Wysocki.
3924 Reverted a change introduced in version 20100528 to enable Embedded
3925 Controller multi-byte transfers. This change was found to cause problems
3927 Index Fields and possibly Bank Fields. It will be reintroduced when these
3928 problems have been resolved.
3930 Fixed a problem with references to Alias objects within Package Objects.
3932 reference to an Alias within the definition of a Package was not always
3933 resolved properly. Aliases to objects like Processors, Thermal zones,
3935 were resolved to the actual object instead of a reference to the object
3938 should be. Package objects are only allowed to contain integer, string,
3939 buffer, package, and reference objects. Redhat bugzilla 608648.
3941 Example Code and Data Size: These are the sizes for the OS-independent
3942 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3943 debug version of the code includes the debug output trace mechanism and
3945 much larger code and data size.
3948 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3949 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
3951 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3952 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
3954 2) iASL Compiler/Disassembler and Tools:
3956 iASL: Implemented a new compiler subsystem to allow definition and
3957 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
3959 are called "ACPI Data Tables", and the new compiler is the "Data Table
3960 Compiler". This compiler is intended to simplify the existing error-prone
3961 process of creating these tables for the BIOS, as well as allowing the
3962 disassembly, modification, recompilation, and override of existing ACPI
3964 tables. See the iASL User Guide for detailed information.
3966 iASL: Implemented a new Template Generator option in support of the new
3968 Table Compiler. This option will create examples of all known ACPI tables
3969 that can be used as the basis for table development. See the iASL
3970 documentation and the -T option.
3972 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
3975 Updated the Linux makefiles for iASL and AcpiExec to place the generated
3976 object files in the local directory so that there can be no collisions
3977 between the shared files between them that are generated with different
3980 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
3982 the #define __APPLE__ to enable this support.
3984 ----------------------------------------
3985 28 May 2010. Summary of changes for version 20100528:
3987 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
3988 available at www.acpi.info. This is primarily an errata release.
3990 1) ACPI CA Core Subsystem:
3992 Undefined ACPI tables: We are looking for the definitions for the
3994 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
3996 Implemented support to enable multi-byte transfers for Embedded
3998 (EC) operation regions. Previously, the maximum data size passed to the
4000 operation region handler was a single byte. There are often EC Fields
4002 than one byte that need to be transferred, and it is useful for the EC
4004 to lock these as a single transaction. This change enables single
4006 larger than 8 bits. This effectively changes the access to the EC space
4008 ByteAcc to AnyAcc, and will probably require changes to the host OS
4010 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
4012 transfers. Alexey Starikovskiy, Lin Ming
4014 Implemented a performance enhancement for namespace search and access.
4016 change enhances the performance of namespace searches and walks by adding
4018 backpointer to the parent in each namespace node. On large namespaces,
4020 change can improve overall ACPI performance by up to 9X. Adding a pointer
4022 each namespace node increases the overall size of the internal namespace
4024 about 5%, since each namespace entry usually consists of both a namespace
4025 node and an ACPI operand object. However, this is the first growth of the
4026 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
4028 Implemented a performance optimization that reduces the number of
4030 walks. On control method exit, only walk the namespace if the method is
4032 to have created namespace objects outside of its local scope. Previously,
4034 entire namespace was traversed on each control method exit. This change
4036 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
4039 Added support to truncate I/O addresses to 16 bits for Windows
4041 Some ASL code has been seen in the field that inadvertently has bits set
4042 above bit 15. This feature is optional and is enabled if the BIOS
4044 any Windows OSI strings. It can also be enabled by the host OS. Matthew
4047 Added support to limit the maximum time for the ASL Sleep() operator. To
4048 prevent accidental deep sleeps, limit the maximum time that Sleep() will
4049 actually sleep. Configurable, the default maximum is two seconds. ACPICA
4052 Added run-time validation support for the _WDG and_WED Microsoft
4054 methods. These objects are defined by "Windows Instrumentation", and are
4056 part of the ACPI spec. ACPICA BZ 860.
4058 Expanded all statistic counters used during namespace and device
4059 initialization from 16 to 32 bits in order to support very large
4062 Replaced all instances of %d in printf format specifiers with %u since
4064 all integers in ACPICA are unsigned.
4066 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
4070 Example Code and Data Size: These are the sizes for the OS-independent
4071 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4072 debug version of the code includes the debug output trace mechanism and
4074 much larger code and data size.
4077 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
4078 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
4080 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
4081 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
4083 2) iASL Compiler/Disassembler and Tools:
4085 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
4086 methods. These objects are defined by "Windows Instrumentation", and are
4088 part of the ACPI spec. ACPICA BZ 860.
4090 AcpiExec: added option to disable the memory tracking mechanism. The -dt
4091 option will disable the tracking mechanism, which improves performance
4094 AcpiExec: Restructured the command line options into -d (disable) and -e
4097 ----------------------------------------
4098 28 April 2010. Summary of changes for version 20100428:
4100 1) ACPI CA Core Subsystem:
4102 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
4103 including FADT-based and GPE Block Devices, execute any _PRW methods in
4105 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
4106 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
4107 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
4108 Devices. Provides compatibility with other ACPI implementations. Two new
4109 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
4112 Fixed a regression introduced in version 20100331 within the table
4114 where initial table loading could fail. This was introduced in the fix
4116 AcpiReallocateRootTable. Also, renamed some of fields in the table
4118 data structures to clarify their meaning and use.
4120 Fixed a possible allocation overrun during internal object copy in
4121 AcpiUtCopySimpleObject. The original code did not correctly handle the
4123 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
4126 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
4127 possible access beyond end-of-allocation. Also, now fully validate
4129 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
4131 Example Code and Data Size: These are the sizes for the OS-independent
4132 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4133 debug version of the code includes the debug output trace mechanism and
4135 much larger code and data size.
4138 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
4139 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
4141 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
4142 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
4144 2) iASL Compiler/Disassembler and Tools:
4146 iASL: Implemented Min/Max/Len/Gran validation for address resource
4147 descriptors. This change implements validation for the address fields
4149 are common to all address-type resource descriptors. These checks are
4150 implemented: Checks for valid Min/Max, length within the Min/Max window,
4151 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
4153 table 6-40 in the ACPI 4.0a specification. Also split the large
4155 and aslrestype2.c files into five new files. ACPICA BZ 840.
4157 iASL: Added support for the _Wxx predefined names. This support was
4159 and these names were not recognized by the compiler as valid predefined
4160 names. ACPICA BZ 851.
4162 iASL: Added an error for all predefined names that are defined to return
4164 value and thus must be implemented as Control Methods. These include all
4166 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
4167 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
4169 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
4171 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
4173 dynamically loaded via the Load() operator. Also cleaned up output for
4176 ta and -tc options. ACPICA BZ 853.
4178 Tests: Added a new file with examples of extended iASL error checking.
4179 Demonstrates the advanced error checking ability of the iASL compiler.
4180 Available at tests/misc/badcode.asl.
4182 ----------------------------------------
4183 31 March 2010. Summary of changes for version 20100331:
4185 1) ACPI CA Core Subsystem:
4187 Completed a major update for the GPE support in order to improve support
4189 shared GPEs and to simplify both host OS and ACPICA code. Added a
4191 count mechanism to support shared GPEs that require multiple device
4193 Several external interfaces have changed. One external interface has been
4194 removed. One new external interface was added. Most of the GPE external
4195 interfaces now use the GPE spinlock instead of the events mutex (and the
4196 Flags parameter for many GPE interfaces has been removed.) See the
4198 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
4200 Wysocki. ACPICA BZ 831.
4203 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
4209 Implemented write support for DataTable operation regions. These regions
4211 defined via the DataTableRegion() operator. Previously, only read support
4213 implemented. The ACPI specification allows DataTableRegions to be
4217 Implemented a new subsystem option to force a copy of the DSDT to local
4218 memory. Optionally copy the entire DSDT to local memory (instead of
4220 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
4222 the original DSDT, creating the need for this option. Default is FALSE,
4226 Implemented detection of a corrupted or replaced DSDT. This change adds
4227 support to detect a DSDT that has been corrupted and/or replaced from
4229 the OS (by firmware). This is typically catastrophic for the system, but
4231 been seen on some machines. Once this problem has been detected, the DSDT
4232 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
4234 Fixed two problems with AcpiReallocateRootTable during the root table
4236 When copying the root table to the new allocation, the length used was
4237 incorrect. The new size was used instead of the current table size,
4239 too much data was copied. Also, the count of available slots for ACPI
4241 was not set correctly. Alexey Starikovskiy, Bob Moore.
4243 Example Code and Data Size: These are the sizes for the OS-independent
4244 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4245 debug version of the code includes the debug output trace mechanism and
4247 much larger code and data size.
4250 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
4251 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
4253 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
4254 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
4256 2) iASL Compiler/Disassembler and Tools:
4258 iASL: Implement limited typechecking for values returned from predefined
4259 control methods. The type of any returned static (unnamed) object is now
4260 validated. For example, Return(1). ACPICA BZ 786.
4262 iASL: Fixed a predefined name object verification regression. Fixes a
4264 introduced in version 20100304. An error is incorrectly generated if a
4265 predefined name is declared as a static named object with a value defined
4266 using the keywords "Zero", "One", or "Ones". Lin Ming.
4268 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
4270 reducing the requested registry access rights. ACPICA BZ 842.
4272 Disassembler: fixed a possible fault when generating External()
4274 Introduced in commit ae7d6fd: Properly handle externals with parent-
4276 (carat). Fixes a string length allocation calculation. Lin Ming.
4278 ----------------------------------------
4279 04 March 2010. Summary of changes for version 20100304:
4281 1) ACPI CA Core Subsystem:
4283 Fixed a possible problem with the AML Mutex handling function
4284 AcpiExReleaseMutex where the function could fault under the very rare
4285 condition when the interpreter has blocked, the interpreter lock is
4287 the interpreter is then reentered via the same thread, and attempts to
4288 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
4292 Implemented additional configuration support for the AML "Debug Object".
4293 Output from the debug object can now be enabled via a global variable,
4294 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
4296 This debug output is now available in the release version of ACPICA
4298 of just the debug version. Also, the entire debug output module can now
4300 configured out of the ACPICA build if desired. One new file added,
4301 executer/exdebug.c. Lin Ming, Bob Moore.
4303 Added header support for the ACPI MCHI table (Management Controller Host
4304 Interface Table). This table was added in ACPI 4.0, but the defining
4306 has only recently become available.
4308 Standardized output of integer values for ACPICA warnings/errors. Always
4310 0x prefix for hex output, always use %u for unsigned integer decimal
4312 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
4314 invocations.) These invocations were converted from the original
4315 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
4317 Example Code and Data Size: These are the sizes for the OS-independent
4318 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4319 debug version of the code includes the debug output trace mechanism and
4321 much larger code and data size.
4324 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
4325 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
4327 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
4328 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
4330 2) iASL Compiler/Disassembler and Tools:
4332 iASL: Implemented typechecking support for static (non-control method)
4333 predefined named objects that are declared with the Name() operator. For
4334 example, the type of this object is now validated to be of type Integer:
4335 Name(_BBN, 1). This change migrates the compiler to using the core
4337 name table instead of maintaining a local version. Added a new file,
4338 aslpredef.c. ACPICA BZ 832.
4340 Disassembler: Added support for the ACPI 4.0 MCHI table.
4342 ----------------------------------------
4343 21 January 2010. Summary of changes for version 20100121:
4345 1) ACPI CA Core Subsystem:
4347 Added the 2010 copyright to all module headers and signons. This affects
4348 virtually every file in the ACPICA core subsystem, the iASL compiler, the
4349 tools/utilities, and the test suites.
4351 Implemented a change to the AcpiGetDevices interface to eliminate
4353 invocations of the _STA method. In the case where a specific _HID is
4354 requested, do not run _STA until a _HID match is found. This eliminates
4355 potentially dozens of _STA calls during a search for a particular
4357 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
4359 Implemented an additional repair for predefined method return values.
4361 to repair unexpected NULL elements within returned Package objects.
4364 Integer of value zero, a NULL String, or a zero-length Buffer as
4366 ACPICA BZ 818. Lin Ming, Bob Moore.
4368 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
4370 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
4372 64-bit AML integers). It is now obsolete and this change removes it from
4374 ACPICA code base, replaced by UINT64. The original typedef has been
4376 for now for compatibility with existing device driver code. ACPICA BZ
4379 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
4381 the parse tree object.
4383 Added additional warning options for the gcc-4 generation. Updated the
4385 accordingly. This includes some code restructuring to eliminate
4387 code, elimination of some gotos, elimination of unused return values,
4389 additional casting, and removal of redundant declarations.
4391 Example Code and Data Size: These are the sizes for the OS-independent
4392 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4393 debug version of the code includes the debug output trace mechanism and
4395 much larger code and data size.
4398 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
4399 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
4401 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
4402 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
4404 2) iASL Compiler/Disassembler and Tools:
4406 No functional changes for this release.
4408 ----------------------------------------
4409 14 December 2009. Summary of changes for version 20091214:
4411 1) ACPI CA Core Subsystem:
4413 Enhanced automatic data type conversions for predefined name repairs.
4415 change expands the automatic repairs/conversions for predefined name
4417 values to make Integers, Strings, and Buffers fully interchangeable.
4420 Buffer can be converted to a Package of Integers if necessary. The
4422 module was completely restructured. Lin Ming, Bob Moore.
4424 Implemented automatic removal of null package elements during predefined
4426 repairs. This change will automatically remove embedded and trailing NULL
4427 package elements from returned package objects that are defined to
4430 variable number of sub-packages. The driver is then presented with a
4432 with no null elements to deal with. ACPICA BZ 819.
4434 Implemented a repair for the predefined _FDE and _GTM names. The expected
4435 return value for both names is a Buffer of 5 DWORDs. This repair fixes
4437 possible problems (both seen in the field), where a package of integers
4439 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
4442 Implemented additional module-level code support. This change will
4444 execute module-level code that is not at the root of the namespace (under
4446 Device object, etc.). Now executes the code within the current scope
4448 of the root. ACPICA BZ 762. Lin Ming.
4450 Fixed possible mutex acquisition errors when running _REG methods. Fixes
4452 problem where mutex errors can occur when running a _REG method that is
4454 the same scope as a method-defined operation region or an operation
4456 under a module-level IF block. This type of code is rare, so the problem
4458 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
4460 Fixed a possible memory leak during module-level code execution. An
4462 could be leaked for each block of executed module-level code if the
4463 interpreter slack mode is enabled This change deletes any implicitly
4465 object from the module-level code block. Lin Ming.
4467 Removed messages for successful predefined repair(s). The repair
4469 was considered too wordy. Now, messages are only unconditionally emitted
4471 the return object cannot be repaired. Existing messages for successful
4472 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
4475 Example Code and Data Size: These are the sizes for the OS-independent
4476 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4477 debug version of the code includes the debug output trace mechanism and
4479 much larger code and data size.
4482 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
4483 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
4485 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
4486 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
4488 2) iASL Compiler/Disassembler and Tools:
4490 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
4492 were no longer automatically removed at the termination of the compile.
4494 acpiexec: Implemented the -f option to specify default region fill value.
4495 This option specifies the value used to initialize buffers that simulate
4496 operation regions. Default value is zero. Useful for debugging problems
4498 depend on a specific initial value for a region or field.
4500 ----------------------------------------
4501 12 November 2009. Summary of changes for version 20091112:
4503 1) ACPI CA Core Subsystem:
4505 Implemented a post-order callback to AcpiWalkNamespace. The existing
4506 interface only has a pre-order callback. This change adds an additional
4507 parameter for a post-order callback which will be more useful for bus
4509 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
4511 Modified the behavior of the operation region memory mapping cache for
4512 SystemMemory. Ensure that the memory mappings created for operation
4514 do not cross 4K page boundaries. Crossing a page boundary while mapping
4515 regions can cause kernel warnings on some hosts if the pages have
4517 attributes. Such regions are probably BIOS bugs, and this is the
4519 Linux BZ 14445. Lin Ming.
4521 Implemented an automatic repair for predefined methods that must return
4522 sorted lists. This change will repair (by sorting) packages returned by
4524 _PSS, and _TSS. Drivers can now assume that the packages are correctly
4526 and do not contain NULL package elements. Adds one new file,
4527 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
4529 Fixed a possible fault during predefined name validation if a return
4531 object contains NULL elements. Also adds a warning if a NULL element is
4532 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
4534 include repair or removal of all such NULL elements where possible.
4536 Implemented additional module-level executable AML code support. This
4538 will execute module-level code that is not at the root of the namespace
4539 (under a Device object, etc.) at table load time. Module-level executable
4541 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
4543 Implemented a new internal function to create Integer objects. This
4545 simplifies miscellaneous object creation code. ACPICA BZ 823.
4547 Reduced the severity of predefined repair messages, Warning to Info.
4549 the object was successfully repaired, a warning is too severe. Reduced to
4551 info message for now. These messages may eventually be changed to debug-
4555 Example Code and Data Size: These are the sizes for the OS-independent
4556 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4557 debug version of the code includes the debug output trace mechanism and
4559 much larger code and data size.
4562 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
4563 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
4565 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
4566 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
4568 2) iASL Compiler/Disassembler and Tools:
4570 iASL: Implemented Switch() with While(1) so that Break works correctly.
4572 change correctly implements the Switch operator with a surrounding
4574 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
4576 iASL: Added a message if a package initializer list is shorter than
4578 length. Adds a new remark for a Package() declaration if an initializer
4580 exists, but is shorter than the declared length of the package. Although
4581 technically legal, this is probably a coding error and it is seen in the
4582 field. ACPICA BZ 815. Lin Ming, Bob Moore.
4584 iASL: Fixed a problem where the compiler could fault after the maximum
4586 of errors was reached (200).
4588 acpixtract: Fixed a possible warning for pointer cast if the compiler
4590 level set very high.
4592 ----------------------------------------
4593 13 October 2009. Summary of changes for version 20091013:
4595 1) ACPI CA Core Subsystem:
4597 Fixed a problem where an Operation Region _REG method could be executed
4599 than once. If a custom address space handler is installed by the host
4601 the "initialize operation regions" phase of the ACPICA initialization,
4603 _REG methods for that address space could be executed twice. This change
4604 fixes the problem. ACPICA BZ 427. Lin Ming.
4606 Fixed a possible memory leak for the Scope() ASL operator. When the exact
4607 invocation of "Scope(\)" is executed (change scope to root), one internal
4608 operand object was leaked. Lin Ming.
4610 Implemented a run-time repair for the _MAT predefined method. If the _MAT
4611 return value is defined as a Field object in the AML, and the field
4612 size is less than or equal to the default width of an integer (32 or
4614 can incorrectly return an Integer instead of a Buffer. ACPICA now
4615 automatically repairs this problem. ACPICA BZ 810.
4617 Implemented a run-time repair for the _BIF and _BIX predefined methods.
4619 "OEM Information" field is often incorrectly returned as an Integer with
4620 value zero if the field is not supported by the platform. This is due to
4622 ambiguity in the ACPI specification. The field should always be a string.
4623 ACPICA now automatically repairs this problem by returning a NULL string
4624 within the returned Package. ACPICA BZ 807.
4626 Example Code and Data Size: These are the sizes for the OS-independent
4627 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4628 debug version of the code includes the debug output trace mechanism and
4630 much larger code and data size.
4633 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
4634 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
4636 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
4637 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
4639 2) iASL Compiler/Disassembler and Tools:
4641 Disassembler: Fixed a problem where references to external symbols that
4642 contained one or more parent-prefixes (carats) were not handled
4644 possibly causing a fault. ACPICA BZ 806. Lin Ming.
4646 Disassembler: Restructured the code so that all functions that handle
4647 external symbols are in a single module. One new file is added,
4650 AML Debugger: Added a max count argument for the Batch command (which
4651 executes multiple predefined methods within the namespace.)
4653 iASL: Updated the compiler documentation (User Reference.) Available at
4654 http://www.acpica.org/documentation/. ACPICA BZ 750.
4656 AcpiXtract: Updated for Lint and other formatting changes. Close all open
4659 ----------------------------------------
4660 03 September 2009. Summary of changes for version 20090903:
4662 1) ACPI CA Core Subsystem:
4664 For Windows Vista compatibility, added the automatic execution of an _INI
4665 method located at the namespace root (\_INI). This method is executed at
4666 table load time. This support is in addition to the automatic execution
4668 \_SB._INI. Lin Ming.
4670 Fixed a possible memory leak in the interpreter for AML package objects
4672 the package initializer list is longer than the defined size of the
4674 This apparently can only happen if the BIOS changes the package size on
4676 fly (seen in a _PSS object), as ASL compilers do not allow this. The
4677 interpreter will truncate the package to the defined size (and issue an
4679 message), but previously could leave the extra objects undeleted if they
4681 pre-created during the argument processing (such is the case if the
4683 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
4685 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
4686 This has been reported in the field. Previously, ACPICA would zero out
4688 buffer/string. Now, the operation is treated as a noop. Provides Windows
4689 compatibility. ACPICA BZ 803. Lin Ming.
4691 Removed an extraneous error message for ASL constructs of the form
4692 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
4694 are seen in many BIOSs and are once again treated as NOOPs and no error
4696 emitted when they are encountered. ACPICA BZ 785.
4698 Fixed an extraneous warning message if a _DSM reserved method returns a
4699 Package object. _DSM can return any type of object, so validation on the
4700 return type cannot be performed. ACPICA BZ 802.
4702 Example Code and Data Size: These are the sizes for the OS-independent
4703 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4704 debug version of the code includes the debug output trace mechanism and
4706 much larger code and data size.
4709 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
4710 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
4712 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
4713 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
4715 2) iASL Compiler/Disassembler and Tools:
4717 iASL: Fixed a problem with the use of the Alias operator and Resource
4718 Templates. The correct alias is now constructed and no error is emitted.
4721 iASL: Implemented the -I option to specify additional search directories
4723 include files. Allows multiple additional search paths for include files.
4724 Directories are searched in the order specified on the command line
4726 the local directory is searched.) ACPICA BZ 800.
4728 iASL: Fixed a problem where the full pathname for include files was not
4729 emitted for warnings/errors. This caused the IDE support to not work
4730 properly. ACPICA BZ 765.
4732 iASL: Implemented the -@ option to specify a Windows-style response file
4733 containing additional command line options. ACPICA BZ 801.
4735 AcpiExec: Added support to load multiple AML files simultaneously (such
4738 DSDT and multiple SSDTs). Also added support for wildcards within the AML
4739 pathname. These features allow all machine tables to be easily loaded and
4740 debugged together. ACPICA BZ 804.
4742 Disassembler: Added missing support for disassembly of HEST table Error
4746 ----------------------------------------
4747 30 July 2009. Summary of changes for version 20090730:
4749 The ACPI 4.0 implementation for ACPICA is complete with this release.
4751 1) ACPI CA Core Subsystem:
4753 ACPI 4.0: Added header file support for all new and changed ACPI tables.
4754 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
4756 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
4758 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
4760 have been some ACPI 4.0 changes to other existing tables. Split the large
4761 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
4763 ACPI 4.0: Implemented predefined name validation for all new names. There
4765 31 new names in ACPI 4.0. The predefined validation module was split into
4767 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
4769 Implemented support for so-called "module-level executable code". This is
4770 executable AML code that exists outside of any control method and is
4772 to be executed at table load time. Although illegal since ACPI 2.0, this
4774 of code still exists and is apparently still being created. Blocks of
4776 code are now detected and executed as intended. Currently, the code
4778 must exist under either an If, Else, or While construct; these are the
4779 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
4781 Implemented an automatic dynamic repair for predefined names that return
4782 nested Package objects. This applies to predefined names that are defined
4784 return a variable-length Package of sub-packages. If the number of sub-
4785 packages is one, BIOS code is occasionally seen that creates a simple
4787 package with no sub-packages. This code attempts to fix the problem by
4788 wrapping a new package object around the existing package. These methods
4790 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
4794 Fixed a regression introduced in 20090625 for the AcpiGetDevices
4796 The _HID/_CID matching was broken and no longer matched IDs correctly.
4800 Fixed a problem with AcpiReset where the reset would silently fail if the
4801 register was one of the protected I/O ports. AcpiReset now bypasses the
4803 validation mechanism. This may eventually be driven into the
4807 Fixed a regression related to the recent update of the AcpiRead/Write
4808 interfaces. A sleep/suspend could fail if the optional PM2 Control
4810 does not exist during an attempt to write the Bus Master Arbitration bit.
4811 (However, some hosts already delete the code that writes this bit, and
4813 code may in fact be obsolete at this date.) ACPICA BZ 799.
4815 Fixed a problem where AcpiTerminate could fault if inadvertently called
4817 in succession. ACPICA BZ 795.
4819 Example Code and Data Size: These are the sizes for the OS-independent
4820 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4821 debug version of the code includes the debug output trace mechanism and
4823 much larger code and data size.
4826 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
4827 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
4829 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
4830 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
4832 2) iASL Compiler/Disassembler and Tools:
4834 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
4835 changes to existing tables. ACPICA BZ 775.
4837 ----------------------------------------
4838 25 June 2009. Summary of changes for version 20090625:
4840 The ACPI 4.0 Specification was released on June 16 and is available at
4841 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
4842 continue for the next few releases.
4844 1) ACPI CA Core Subsystem:
4846 ACPI 4.0: Implemented interpreter support for the IPMI operation region
4847 address space. Includes support for bi-directional data buffers and an
4849 address space handler (to be installed by an IPMI device driver.) ACPICA
4853 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
4855 support in both the header files and the disassembler.
4857 Completed a major update for the AcpiGetObjectInfo external interface.
4859 - Support for variable, unlimited length HID, UID, and CID strings.
4860 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
4862 - Call the _SxW power methods on behalf of a device object.
4863 - Determine if a device is a PCI root bridge.
4864 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
4865 These changes will require an update to all callers of this interface.
4867 the updated ACPICA Programmer Reference for details. One new source file
4869 been added - utilities/utids.c. ACPICA BZ 368, 780.
4871 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
4872 transfers. The Value parameter has been extended from 32 bits to 64 bits
4874 order to support new ACPI 4.0 tables. These changes will require an
4877 all callers of these interfaces. See the ACPICA Programmer Reference for
4878 details. ACPICA BZ 768.
4880 Fixed several problems with AcpiAttachData. The handler was not invoked
4882 the host node was deleted. The data sub-object was not automatically
4884 when the host node was deleted. The interface to the handler had an
4886 parameter, this was removed. ACPICA BZ 778.
4888 Enhanced the function that dumps ACPI table headers. All non-printable
4889 characters in the string fields are now replaced with '?' (Signature,
4891 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
4892 these fields are occasionally seen in the field. ACPICA BZ 788.
4894 Fixed a problem with predefined method repair code where the code that
4895 attempts to repair/convert an object of incorrect type is only executed
4897 the first time the predefined method is called. The mechanism that
4899 warnings on subsequent calls was interfering with the repair mechanism.
4902 Fixed a possible memory leak in the predefined validation/repair code
4905 buffer is automatically converted to an expected string object.
4907 Removed obsolete 16-bit files from the distribution and from the current
4909 tree head. ACPICA BZ 776.
4911 Example Code and Data Size: These are the sizes for the OS-independent
4912 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4913 debug version of the code includes the debug output trace mechanism and
4915 much larger code and data size.
4918 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
4919 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
4921 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
4922 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
4924 2) iASL Compiler/Disassembler and Tools:
4926 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
4927 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
4929 ACPI 4.0: iASL - implemented compile-time validation support for all new
4930 predefined names and control methods (31 total). ACPICA BZ 769.
4932 ----------------------------------------
4933 21 May 2009. Summary of changes for version 20090521:
4935 1) ACPI CA Core Subsystem:
4937 Disabled the preservation of the SCI enable bit in the PM1 control
4939 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
4942 a "preserved" bit - "OSPM always preserves this bit position", section
4943 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
4944 because the bit needs to be explicitly set by the OS as a workaround. No
4945 machines fail if the bit is not preserved. Therefore, ACPICA no longer
4946 attempts to preserve this bit.
4948 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
4949 incorrectly formed _PRT package could cause a fault. Added validation to
4950 ensure that each package element is actually a sub-package.
4952 Implemented a new interface to install or override a single control
4954 AcpiInstallMethod. This interface is useful when debugging in order to
4956 an existing method or to install a missing method without having to
4958 the entire ACPI table. See the ACPICA Programmer Reference for use and
4959 examples. Lin Ming, Bob Moore.
4961 Fixed several reference count issues with the DdbHandle object that is
4962 created from a Load or LoadTable operator. Prevent premature deletion of
4964 object. Also, mark the object as invalid once the table has been
4966 This is needed because the handle itself may not be deleted after the
4968 unload, depending on whether it has been stored in a named object by the
4971 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
4972 mutexes of the same sync level are acquired but then not released in
4974 opposite order, the internally maintained Current Sync Level becomes
4976 and can cause subsequent execution errors. ACPICA BZ 471.
4978 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
4979 specification has been changed to make the SyncLevel for mutex objects
4981 useful. When releasing a mutex, the SyncLevel of the mutex must now be
4983 same as the current sync level. This makes more sense than the previous
4985 (SyncLevel less than or equal). This change updates the code to match the
4988 Fixed a problem with the local version of the AcpiOsPurgeCache function.
4990 (local) cache must be locked during all cache object deletions. Andrew
4993 Updated the Load operator to use operation region interfaces. This
4995 direct memory mapping with region access calls. Now, all region accesses
4997 through the installed region handler as they should.
4999 Simplified and optimized the NsGetNextNode function. Reduced parameter
5001 and reduced code for this frequently used function.
5003 Example Code and Data Size: These are the sizes for the OS-independent
5004 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5005 debug version of the code includes the debug output trace mechanism and
5007 much larger code and data size.
5010 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
5011 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
5013 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
5014 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
5016 2) iASL Compiler/Disassembler and Tools:
5018 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
5020 with sub-table disassembly and handling invalid sub-tables. Attempt
5022 after an invalid sub-table ID.
5024 ----------------------------------------
5025 22 April 2009. Summary of changes for version 20090422:
5027 1) ACPI CA Core Subsystem:
5029 Fixed a compatibility issue with the recently released I/O port
5031 mechanism. For windows compatibility, 1) On a port protection violation,
5032 simply ignore the request and do not return an exception (allow the
5034 method to continue execution.) 2) If only part of the request overlaps a
5035 protected port, read/write the individual ports that are not protected.
5039 Enhanced the execution of the ASL/AML BreakPoint operator so that it
5041 breaks into the AML debugger if the debugger is present. This matches the
5042 ACPI-defined behavior.
5044 Fixed several possible warnings related to the use of the configurable
5045 ACPI_THREAD_ID. This type can now be configured as either an integer or a
5046 pointer with no warnings. Also fixes several warnings in printf-like
5047 statements for the 64-bit build when the type is configured as a pointer.
5050 Fixed a number of possible warnings when compiling with gcc 4+ (depending
5052 warning options.) Examples include printf formats, aliasing, unused
5054 missing prototypes, missing switch default statements, use of non-ANSI
5055 library functions, use of non-ANSI constructs. See generate/unix/Makefile
5057 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
5059 Example Code and Data Size: These are the sizes for the OS-independent
5060 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5061 debug version of the code includes the debug output trace mechanism and
5063 much larger code and data size.
5066 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
5067 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
5069 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
5070 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
5072 2) iASL Compiler/Disassembler and Tools:
5074 iASL: Fixed a generation warning from Bison 2.3 and fixed several
5079 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
5081 correctly digest Windows/DOS formatted files (with CR/LF).
5083 iASL: Added a new option for "quiet mode" (-va) that produces only the
5084 compilation summary, not individual errors and warnings. Useful for large
5087 AcpiExec: Implemented a new option (-z) to enable a forced
5089 timeout that can be used to detect hang conditions during execution of
5091 code (includes both internal semaphores and AML-defined mutexes and
5094 Added new makefiles for the generation of acpica in a generic unix-like
5095 environment. These makefiles are intended to generate the acpica tools
5097 utilities from the original acpica git source tree structure.
5099 Test Suites: Updated and cleaned up the documentation files. Updated the
5100 copyrights to 2009, affecting all source files. Use the new version of
5102 with quiet mode. Increased the number of available semaphores in the
5104 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
5106 an alternate implementation of the semaphore timeout to allow aslts to
5107 execute fully on Cygwin.
5109 ----------------------------------------
5110 20 March 2009. Summary of changes for version 20090320:
5112 1) ACPI CA Core Subsystem:
5114 Fixed a possible race condition between AcpiWalkNamespace and dynamic
5116 unloads. Added a reader/writer locking mechanism to allow multiple
5118 namespace walks (readers), but block a dynamic table unload until it can
5120 exclusive write access to the namespace. This fixes a problem where a
5122 unload could (possibly catastrophically) delete the portion of the
5124 that is currently being examined by a walk. Adds a new file, utlock.c,
5126 implements the reader/writer lock mechanism. ACPICA BZ 749.
5128 Fixed a regression introduced in version 20090220 where a change to the
5130 handling could cause the ACPICA subsystem to access non-existent I/O
5133 Modified the handling of FADT register and table (FACS/DSDT) addresses.
5135 FADT can contain both 32-bit and 64-bit versions of these addresses.
5136 Previously, the 64-bit versions were favored, meaning that if both 32 and
5138 versions were valid, but not equal, the 64-bit version was used. This was
5139 found to cause some machines to fail. Now, in this case, the 32-bit
5141 is used instead. This now matches the Windows behavior.
5143 Implemented a new mechanism to protect certain I/O ports. Provides
5145 compatibility and protects the standard PC I/O ports from access via AML
5146 code. Adds a new file, hwvalid.c
5148 Fixed a possible extraneous warning message from the FADT support. The
5149 message warns of a 32/64 length mismatch between the legacy and GAS
5150 definitions for a register.
5152 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
5154 made obsolete by the port protection mechanism above. It was previously
5156 to validate the entire address range of an operation region, which could
5158 incorrect if the range included illegal ports, but fields within the
5159 operation region did not actually access those ports. Validation is now
5160 performed on a per-field basis instead of the entire region.
5162 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
5163 Ignored bits must be "preserved" according to the ACPI spec. Usually,
5165 means a read/modify/write when writing to the register. However, for
5167 registers, writing a one means clear the event. Writing a zero means
5169 the event (do not clear.) This behavior is clarified in the ACPI 4.0
5171 and the ACPICA code now simply always writes a zero to the ignored bit.
5173 Modified the handling of ignored bits for the PM1 A/B Control Registers.
5175 per the ACPI specification, for the control registers, preserve
5176 (read/modify/write) all bits that are defined as either reserved or
5179 Updated the handling of write-only bits in the PM1 A/B Control Registers.
5180 When reading the register, zero the write-only bits as per the ACPI spec.
5181 ACPICA BZ 443. Lin Ming.
5183 Removed "Linux" from the list of supported _OSI strings. Linux no longer
5184 wants to reply true to this request. The Windows strings are the only
5186 through the AML that are tested and known to work properly.
5189 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
5190 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
5192 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
5193 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
5195 2) iASL Compiler/Disassembler and Tools:
5197 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
5201 ----------------------------------------
5202 20 February 2009. Summary of changes for version 20090220:
5204 1) ACPI CA Core Subsystem:
5206 Optimized the ACPI register locking. Removed locking for reads from the
5208 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
5210 not required when reading the single-bit registers. The
5211 AcpiGetRegisterUnlocked function is no longer needed and has been
5213 This will improve performance for reads on these registers. ACPICA BZ
5216 Fixed the parameter validation for AcpiRead/Write. Now return
5217 AE_BAD_PARAMETER if the input register pointer is null, and
5220 the register has an address of zero. Previously, these cases simply
5222 AE_OK. For optional registers such as PM1B status/enable/control, the
5224 should check for a valid register address before calling. ACPICA BZ 748.
5226 Renamed the external ACPI bit register access functions. Renamed
5227 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
5228 functions. The new names are AcpiReadBitRegister and
5229 AcpiWriteBitRegister.
5230 Also, restructured the code for these functions by simplifying the code
5232 and condensing duplicate code to reduce code size.
5234 Added new functions to transparently handle the possibly split PM1 A/B
5235 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
5237 now handle the split registers for PM1 Status, Enable, and Control.
5242 Added a function to handle the PM1 control registers,
5243 AcpiHwWritePm1Control.
5244 This function writes both of the PM1 control registers (A/B). These
5246 are different than the PM1 A/B status and enable registers in that
5248 values can be written to the A/B registers. Most notably, the SLP_TYP
5250 can be different, as per the values returned from the _Sx predefined
5253 Removed an extra register write within AcpiHwClearAcpiStatus. This
5255 was writing an optional PM1B status register twice. The existing call to
5257 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
5259 register. ACPICA BZ 751.
5261 Split out the PM1 Status registers from the FADT. Added new globals for
5263 registers (A/B), similar to the way the PM1 Enable registers are handled.
5264 Instead of overloading the FADT Event Register blocks. This makes the
5266 clearer and less prone to error.
5268 Fixed the warning message for when the platform contains too many ACPI
5270 for the default size of the global root table data structure. The
5272 for the truncation value was incorrect.
5274 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
5275 obsolete macro, since it is now a simple reference to ->common.type.
5277 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
5279 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
5280 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
5281 simply SLEEP_TYPE. ACPICA BZ 754.
5283 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
5284 function is only needed on 64-bit host operating systems and is thus not
5285 included for 32-bit hosts.
5287 Debug output: print the input and result for invocations of the _OSI
5289 control method via the ACPI_LV_INFO debug level. Also, reduced some of
5291 verbosity of this debug level. Len Brown.
5293 Example Code and Data Size: These are the sizes for the OS-independent
5294 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5295 debug version of the code includes the debug output trace mechanism and
5297 much larger code and data size.
5300 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
5301 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
5303 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
5304 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
5306 2) iASL Compiler/Disassembler and Tools:
5308 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
5309 various legal performance profiles.
5311 ----------------------------------------
5312 23 January 2009. Summary of changes for version 20090123:
5314 1) ACPI CA Core Subsystem:
5316 Added the 2009 copyright to all module headers and signons. This affects
5317 virtually every file in the ACPICA core subsystem, the iASL compiler, and
5318 the tools/utilities.
5320 Implemented a change to allow the host to override any ACPI table,
5322 dynamically loaded tables. Previously, only the DSDT could be replaced by
5324 host. With this change, the AcpiOsTableOverride interface is called for
5326 table found in the RSDT/XSDT during ACPICA initialization, and also
5328 a table is dynamically loaded via the AML Load operator.
5330 Updated FADT flag definitions, especially the Boot Architecture flags.
5332 Debugger: For the Find command, automatically pad the input ACPI name
5334 underscores if the name is shorter than 4 characters. This enables a
5336 with the actual namespace entry which is itself padded with underscores.
5338 Example Code and Data Size: These are the sizes for the OS-independent
5339 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5340 debug version of the code includes the debug output trace mechanism and
5342 much larger code and data size.
5345 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
5346 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
5348 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
5349 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
5351 2) iASL Compiler/Disassembler and Tools:
5353 Fix build error under Bison-2.4.
5355 Dissasembler: Enhanced FADT support. Added decoding of the Boot
5357 flags. Now decode all flags, regardless of the FADT version. Flag output
5358 includes the FADT version which first defined each flag.
5360 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
5362 DSDT). Windows only.
5364 ----------------------------------------
5365 04 December 2008. Summary of changes for version 20081204:
5367 1) ACPI CA Core Subsystem:
5369 The ACPICA Programmer Reference has been completely updated and revamped
5371 this release. This includes updates to the external interfaces, OSL
5372 interfaces, the overview sections, and the debugger reference.
5374 Several new ACPICA interfaces have been implemented and documented in the
5375 programmer reference:
5376 AcpiReset - Writes the reset value to the FADT-defined reset register.
5377 AcpiDisableAllGpes - Disable all available GPEs.
5378 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
5379 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
5380 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
5381 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
5382 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
5384 Most of the public ACPI hardware-related interfaces have been moved to a
5386 file, components/hardware/hwxface.c
5388 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
5389 register lengths within the FADT are now used, and the low level ACPI
5390 register access no longer hardcodes the ACPI register lengths. Given that
5391 there may be some risk in actually trusting the FADT register lengths, a
5393 time option was added to fall back to the default hardcoded lengths if
5395 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
5396 option is set to true for now, and a warning is issued if a suspicious
5398 register length is overridden with the default value.
5400 Fixed a reference count issue in NsRepairObject. This problem was
5402 in version 20081031 as part of a fix to repair Buffer objects within
5405 Added semaphore support to the Linux/Unix application OS-services layer
5406 (OSL). ACPICA BZ 448. Lin Ming.
5408 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
5410 be implemented in the OSL, or will binary semaphores be used instead.
5412 Example Code and Data Size: These are the sizes for the OS-independent
5413 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5414 debug version of the code includes the debug output trace mechanism and
5416 much larger code and data size.
5419 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
5420 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
5422 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
5423 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
5425 2) iASL Compiler/Disassembler and Tools:
5427 iASL: Completed the '-e' option to include additional ACPI tables in
5430 aid with disassembly and External statement generation. ACPICA BZ 742.
5434 iASL: Removed the "named object in while loop" error. The compiler cannot
5435 determine how many times a loop will execute. ACPICA BZ 730.
5437 Disassembler: Implemented support for FADT revision 2 (MS extension).
5441 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
5444 ----------------------------------------
5445 31 October 2008. Summary of changes for version 20081031:
5447 1) ACPI CA Core Subsystem:
5449 Restructured the ACPICA header files into public/private. acpi.h now
5451 only the "public" acpica headers. All other acpica headers are "private"
5453 should not be included by acpica users. One new file, accommon.h is used
5455 include the commonly used private headers for acpica code generation.
5457 plans include moving all private headers to a new subdirectory.
5459 Implemented an automatic Buffer->String return value conversion for
5460 predefined ACPI methods. For these methods (such as _BIF), added
5462 conversion for return objects that are required to be a String, but a
5464 was found instead. This can happen when reading string battery data from
5466 operation region, because it used to be difficult to convert the data
5468 buffer to string from within the ASL. Ensures that the host OS is
5470 with a valid null-terminated string. Linux BZ 11822.
5472 Updated the FACS waking vector interfaces. Split
5473 AcpiSetFirmwareWakingVector
5474 into two: one for the 32-bit vector, another for the 64-bit vector. This
5476 required because the host OS must setup the wake much differently for
5478 vector (real vs. protected mode, etc.) and the interface itself should
5481 deciding which vector to use. Also, eliminated the
5482 GetFirmwareWakingVector
5483 interface, as it served no purpose (only the firmware reads the vector,
5485 only writes the vector.) ACPICA BZ 731.
5487 Implemented a mechanism to escape infinite AML While() loops. Added a
5489 counter to force exit from AML While loops if the count becomes too
5491 This can occur in poorly written AML when the hardware does not respond
5492 within a while loop and the loop does not implement a timeout. The
5494 loop count is configurable. A new exception code is returned when a loop
5496 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
5498 Optimized the execution of AML While loops. Previously, a control state
5499 object was allocated and freed for each execution of the loop. The
5500 optimization is to simply reuse the control state for each iteration.
5502 speeds up the raw loop execution time by about 5%.
5504 Enhanced the implicit return mechanism. For Windows compatibility, return
5506 implicit integer of value zero for methods that contain no executable
5508 Such methods are seen in the field as stubs (presumably), and can cause
5509 drivers to fail if they expect a return value. Lin Ming.
5511 Allow multiple backslashes as root prefixes in namepaths. In a fully
5512 qualified namepath, allow multiple backslash prefixes. This can happen
5514 is seen in the field) because of the use of a double-backslash in strings
5515 (since backslash is the escape character) causing confusion. ACPICA BZ
5519 Emit a warning if two different FACS or DSDT tables are discovered in the
5520 FADT. Checks if there are two valid but different addresses for the FACS
5522 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
5524 Consolidated the method argument count validation code. Merged the code
5526 validates control method argument counts into the predefined validation
5527 module. Eliminates possible multiple warnings for incorrect argument
5530 Implemented ACPICA example code. Includes code for ACPICA initialization,
5531 handler installation, and calling a control method. Available at
5532 source/tools/examples.
5534 Added a global pointer for FACS table to simplify internal FACS access.
5536 the global pointer instead of using AcpiGetTableByIndex for each FACS
5538 This simplifies the code for the Global Lock and the Firmware Waking
5541 Example Code and Data Size: These are the sizes for the OS-independent
5542 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5543 debug version of the code includes the debug output trace mechanism and
5545 much larger code and data size.
5548 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
5549 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
5551 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
5552 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
5554 2) iASL Compiler/Disassembler and Tools:
5556 iASL: Improved disassembly of external method calls. Added the -e option
5558 allow the inclusion of additional ACPI tables to help with the
5561 method invocations and the generation of external declarations during the
5562 disassembly. Certain external method invocations cannot be disassembled
5563 properly without the actual declaration of the method. Use the -e option
5565 include the table where the external method(s) are actually declared.
5567 useful for disassembling SSDTs that make method calls back to the master
5568 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
5570 -e dsdt.aml ssdt1.aml
5572 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
5573 problem where the use of an alias within a namepath would result in a not
5574 found error or cause the compiler to fault. Also now allows forward
5575 references from the Alias operator itself. ACPICA BZ 738.
5577 ----------------------------------------
5578 26 September 2008. Summary of changes for version 20080926:
5580 1) ACPI CA Core Subsystem:
5582 Designed and implemented a mechanism to validate predefined ACPI methods
5584 objects. This code validates the predefined ACPI objects (objects whose
5586 start with underscore) that appear in the namespace, at the time they are
5587 evaluated. The argument count and the type of the returned object are
5588 validated against the ACPI specification. The purpose of this validation
5590 to detect problems with the BIOS-implemented predefined ACPI objects
5592 the results are returned to the ACPI-related drivers. Future enhancements
5594 include actual repair of incorrect return objects where possible. Two new
5595 files are nspredef.c and acpredef.h.
5597 Fixed a fault in the AML parser if a memory allocation fails during the
5599 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
5601 Fixed an issue with implicit return compatibility. This change improves
5603 implicit return mechanism to be more compatible with the MS interpreter.
5605 Ming, ACPICA BZ 349.
5607 Implemented support for zero-length buffer-to-string conversions. Allow
5609 length strings during interpreter buffer-to-string conversions. For
5611 during the ToDecimalString and ToHexString operators, as well as implicit
5612 conversions. Fiodor Suietov, ACPICA BZ 585.
5614 Fixed two possible memory leaks in the error exit paths of
5615 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
5617 similar in that they use a stack of state objects in order to eliminate
5618 recursion. The stack must be fully unwound and deallocated if an error
5619 occurs. Lin Ming. ACPICA BZ 383.
5621 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
5623 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
5624 Moore ACPICA BZ 442.
5626 Removed the obsolete version number in module headers. Removed the
5627 "$Revision" number that appeared in each module header. This version
5629 was useful under SourceSafe and CVS, but has no meaning under git. It is
5631 only incorrect, it could also be misleading.
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: 79.7K Code, 16.4K Data, 96.1K Total
5641 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
5643 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
5644 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
5646 ----------------------------------------
5647 29 August 2008. Summary of changes for version 20080829:
5649 1) ACPI CA Core Subsystem:
5651 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
5652 Reference. Changes include the elimination of cheating on the Object
5654 for the DdbHandle subtype, addition of a reference class field to
5655 differentiate the various reference types (instead of an AML opcode), and
5657 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
5659 Reduce an error to a warning for an incorrect method argument count.
5660 Previously aborted with an error if too few arguments were passed to a
5661 control method via the external ACPICA interface. Now issue a warning
5663 and continue. Handles the case where the method inadvertently declares
5665 many arguments, but does not actually use the extra ones. Applies mainly
5667 the predefined methods. Lin Ming. Linux BZ 11032.
5669 Disallow the evaluation of named object types with no intrinsic value.
5671 AE_TYPE for objects that have no value and therefore evaluation is
5673 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
5675 these types were allowed, but an exception would be generated at some
5677 during the evaluation. Now, the error is generated up front.
5679 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
5680 (nsnames.c). Fixes a leak in the error exit path.
5682 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
5684 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
5686 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
5689 Removed obsolete and/or unused exception codes from the acexcep.h header.
5690 There is the possibility that certain device drivers may be affected if
5692 use any of these exceptions.
5694 The ACPICA documentation has been added to the public git source tree,
5696 acpica/documents. Included are the ACPICA programmer reference, the iASL
5697 compiler reference, and the changes.txt release logfile.
5699 Example Code and Data Size: These are the sizes for the OS-independent
5700 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5701 debug version of the code includes the debug output trace mechanism and
5703 much larger code and data size.
5706 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5707 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
5709 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5710 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
5712 2) iASL Compiler/Disassembler and Tools:
5714 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
5715 defines _SCP with 3 arguments. Previous versions defined it with only 1
5716 argument. iASL now allows both definitions.
5718 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
5720 length subtables when disassembling ACPI tables. Also fixed a couple of
5721 errors where a full 16-bit table type field was not extracted from the
5725 acpisrc: Improve comment counting mechanism for generating source code
5726 statistics. Count first and last lines of multi-line comments as
5728 not comment lines. Handle Linux legal header in addition to standard
5732 ----------------------------------------
5734 29 July 2008. Summary of changes for version 20080729:
5736 1) ACPI CA Core Subsystem:
5738 Fix a possible deadlock in the GPE dispatch. Remove call to
5739 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
5741 to acquire the GPE lock but can deadlock since the GPE lock is already
5743 at dispatch time. This code was introduced in version 20060831 as a
5745 to Linux BZ 6881 and has since been removed from Linux.
5747 Add a function to dereference returned reference objects. Examines the
5749 object from a call to AcpiEvaluateObject. Any Index or RefOf references
5751 automatically dereferenced in an attempt to return something useful
5753 reference types cannot be converted into an external ACPI_OBJECT.)
5755 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
5757 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
5758 subtables for the MADT and one new subtable for the SRAT. Includes
5759 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
5761 Specification, June 2008.
5763 Additional error checking for pathname utilities. Add error check after
5765 calls to AcpiNsGetPathnameLength. Add status return from
5766 AcpiNsBuildExternalPath and check after all calls. Add parameter
5768 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
5770 Return status from the global init function AcpiUtGlobalInitialize. This
5772 used by both the kernel subsystem and the utilities such as iASL
5774 The function could possibly fail when the caches are initialized. Yang
5777 Add a function to decode reference object types to strings. Created for
5778 improved error messages.
5780 Improve object conversion error messages. Better error messages during
5782 conversion from internal to the external ACPI_OBJECT. Used for external
5784 to AcpiEvaluateObject.
5786 Example Code and Data Size: These are the sizes for the OS-independent
5787 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5788 debug version of the code includes the debug output trace mechanism and
5790 much larger code and data size.
5793 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
5794 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
5796 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5797 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
5799 2) iASL Compiler/Disassembler and Tools:
5801 Debugger: fix a possible hang when evaluating non-methods. Fixes a
5803 introduced in version 20080701. If the object being evaluated (via
5805 command) is not a method, the debugger can hang while trying to obtain
5807 existent parameters.
5809 iASL: relax error for using reserved "_T_x" identifiers. These names can
5810 appear in a disassembled ASL file if they were emitted by the original
5811 compiler. Instead of issuing an error or warning and forcing the user to
5812 manually change these names, issue a remark instead.
5814 iASL: error if named object created in while loop. Emit an error if any
5816 object is created within a While loop. If allowed, this code will
5819 run-time error on the second iteration of the loop when an attempt is
5822 create the same named object twice. ACPICA bugzilla 730.
5824 iASL: Support absolute pathnames for include files. Add support for
5826 pathnames within the Include operator. previously, only relative
5830 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
5832 The ACPI spec requires one interrupt minimum. BZ 423
5834 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
5835 Handles the case for the Interrupt Resource Descriptor where
5836 the ResourceSource argument is omitted but ResourceSourceIndex
5837 is present. Now leave room for the Index. BZ 426
5839 iASL: Prevent error message if CondRefOf target does not exist. Fixes
5841 where an error message is emitted if the target does not exist. BZ 516
5843 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
5844 (get ACPI tables on Windows). This was apparently broken in version
5847 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
5849 the EOF happens immediately after the last table in the input file. Print
5850 completion message. Previously, no message was displayed in this case.
5852 ----------------------------------------
5853 01 July 2008. Summary of changes for version 20080701:
5855 0) Git source tree / acpica.org
5857 Fixed a problem where a git-clone from http would not transfer the entire
5860 1) ACPI CA Core Subsystem:
5862 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
5863 enable bit. Now performs a read-change-write of the enable register
5865 of simply writing out the cached enable mask. This will prevent
5867 enabling of GPEs if a rogue GPE is received during initialization (before
5869 handlers are installed.)
5871 Implemented a copy for dynamically loaded tables. Previously, dynamically
5872 loaded tables were simply mapped - but on some machines this memory is
5873 corrupted after suspend. Now copy the table to a local buffer. For the
5874 OpRegion case, added checksum verify. Use the table length from the table
5875 header, not the region length. For the Buffer case, use the table length
5876 also. Dennis Noordsij, Bob Moore. BZ 10734
5878 Fixed a problem where the same ACPI table could not be dynamically loaded
5880 unloaded more than once. Without this change, a table cannot be loaded
5882 once it has been loaded/unloaded one time. The current mechanism does not
5883 unregister a table upon an unload. During a load, if the same table is
5885 this no longer returns an exception. BZ 722
5887 Fixed a problem where the wrong descriptor length was calculated for the
5888 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
5890 are calculated as 12 bytes long, but the actual length in the internal
5891 descriptor is 16 because of the round-up to 8 on the 64-bit build.
5893 by Linn Crosetto. BZ 728
5895 Fixed a possible memory leak in the Unload operator. The DdbHandle
5897 by Load() did not have its reference count decremented during unload,
5899 to a memory leak. Lin Ming. BZ 727
5901 Fixed a possible memory leak when deleting thermal/processor objects. Any
5902 associated notify handlers (and objects) were not being deleted. Fiodor
5905 Fixed the ordering of the ASCII names in the global mutex table to match
5907 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
5909 Vegard Nossum. BZ 726
5911 Enhanced the AcpiGetObjectInfo interface to return the number of required
5912 arguments if the object is a control method. Added this call to the
5914 so the proper number of default arguments are passed to a method. This
5915 prevents a warning when executing methods from AcpiExec.
5917 Added a check for an invalid handle in AcpiGetObjectInfo. Return
5918 AE_BAD_PARAMETER if input handle is invalid. BZ 474
5920 Fixed an extraneous warning from exconfig.c on the 64-bit build.
5922 Example Code and Data Size: These are the sizes for the OS-independent
5923 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5924 debug version of the code includes the debug output trace mechanism and
5926 much larger code and data size.
5929 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
5930 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
5932 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
5933 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
5935 2) iASL Compiler/Disassembler and Tools:
5937 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
5938 resource descriptor names.
5940 iASL: Detect invalid ASCII characters in input (windows version). Removed
5942 "-CF" flag from the flex compile, enables correct detection of non-ASCII
5943 characters in the input. BZ 441
5945 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
5947 "result of operation not used" warning when the DDB handle returned from
5948 LoadTable is not used. The warning is not needed. BZ 590
5950 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
5953 pass address of table to the AML. Added option to disable OpRegion
5955 to allow creation of an OpRegion with a real address that was passed to
5957 All of this allows testing of the Load and Unload operators from
5960 Debugger: update tables command for unloaded tables. Handle unloaded
5962 and use the standard table header output routine.
5964 ----------------------------------------
5965 09 June 2008. Summary of changes for version 20080609:
5967 1) ACPI CA Core Subsystem:
5969 Implemented a workaround for reversed _PRT entries. A significant number
5971 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
5972 change dynamically detects and repairs this problem. Provides
5974 with MS ACPI. BZ 6859
5976 Simplified the internal ACPI hardware interfaces to eliminate the locking
5977 flag parameter from Register Read/Write. Added a new external interface,
5978 AcpiGetRegisterUnlocked.
5980 Fixed a problem where the invocation of a GPE control method could hang.
5982 was a regression introduced in 20080514. The new method argument count
5983 validation mechanism can enter an infinite loop when a GPE method is
5984 dispatched. Problem fixed by removing the obsolete code that passed GPE
5986 information to the notify handler via the control method parameter
5989 Fixed a problem where the _SST execution status was incorrectly returned
5991 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
5993 20080514. _SST is optional and a NOT_FOUND exception should never be
5996 Fixed a problem where a deleted object could be accessed from within the
5998 parser. This was a regression introduced in version 20080123 as a fix for
6000 Unload operator. Lin Ming. BZ 10669
6002 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
6004 and eliminated the use of a negative index in a loop. Operands are now
6005 displayed in the correct order, not backwards. This also fixes a
6007 introduced in 20080514 on 64-bit systems where the elimination of
6008 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
6011 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
6013 path did not delete a locally allocated structure.
6015 Updated definitions for the DMAR and SRAT tables to synchronize with the
6016 current specifications. Includes disassembler support.
6018 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
6019 loop termination value was used. Loop terminated on iteration early,
6021 one mutex. Linn Crosetto
6023 Example Code and Data Size: These are the sizes for the OS-independent
6024 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6025 debug version of the code includes the debug output trace mechanism and
6027 much larger code and data size.
6030 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
6031 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
6033 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
6034 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
6036 2) iASL Compiler/Disassembler and Tools:
6038 Disassembler: Implemented support for EisaId() within _CID objects. Now
6039 disassemble integer _CID objects back to EisaId invocations, including
6040 multiple integers within _CID packages. Includes single-step support for
6043 Disassembler: Added support for DMAR and SRAT table definition changes.
6045 ----------------------------------------
6046 14 May 2008. Summary of changes for version 20080514:
6048 1) ACPI CA Core Subsystem:
6050 Fixed a problem where GPEs were enabled too early during the ACPICA
6051 initialization. This could lead to "handler not installed" errors on some
6052 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
6054 ensures that all operation regions and devices throughout the namespace
6056 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
6058 Implemented a change to the enter sleep code. Moved execution of the _GTS
6059 method to just before setting sleep enable bit. The execution was moved
6061 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
6062 immediately before the SLP_EN bit is set, as per the ACPI specification.
6065 Implemented a fix to disable unknown GPEs (2nd version). Now always
6067 the GPE, even if ACPICA thinks that that it is already disabled. It is
6068 possible that the AML or some other code has enabled the GPE unbeknownst
6072 Fixed a problem with the Field operator where zero-length fields would
6074 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
6076 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
6078 Implemented a fix for the Load operator, now load the table at the
6080 root. This reverts a change introduced in version 20071019. The table is
6082 loaded at the namespace root even though this goes against the ACPI
6083 specification. This provides compatibility with other ACPI
6085 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
6088 Fixed a problem where ACPICA would not Load() tables with unusual
6090 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
6091 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
6092 Therefore, signature validation is worthless. Apparently MS ACPI accepts
6094 signatures, ACPICA must be compatible. BZ 10454.
6096 Fixed a possible negative array index in AcpiUtValidateException. Added
6098 fields to the exception string arrays to eliminate a -1 subtraction on
6102 Updated the debug tracking macros to reduce overall code and data size.
6103 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
6104 instead of pointers to static strings. Jan Beulich and Bob Moore.
6106 Implemented argument count checking in control method invocation via
6107 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
6109 many. This applies only to extern programmatic control method execution,
6111 method-to-method calls within the AML. Lin Ming.
6113 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
6115 longer needed, especially with the removal of 16-bit support. It was
6117 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
6120 32/64-bit platforms is required.
6122 Added the C const qualifier for appropriate string constants -- mostly
6123 MODULE_NAME and printf format strings. Jan Beulich.
6125 Example Code and Data Size: These are the sizes for the OS-independent
6126 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6127 debug version of the code includes the debug output trace mechanism and
6129 much larger code and data size.
6132 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
6133 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
6135 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
6136 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
6138 2) iASL Compiler/Disassembler and Tools:
6140 Implemented ACPI table revision ID validation in the disassembler. Zero
6142 always invalid. For DSDTs, the ID controls the interpreter integer width.
6144 means 32-bit and this is unusual. 2 or greater is 64-bit.
6146 ----------------------------------------
6147 21 March 2008. Summary of changes for version 20080321:
6149 1) ACPI CA Core Subsystem:
6151 Implemented an additional change to the GPE support in order to suppress
6152 spurious or stray GPEs. The AcpiEvDisableGpe function will now
6154 disable incoming GPEs that are neither enabled nor disabled -- meaning
6156 the GPE is unknown to the system. This should prevent future interrupt
6158 from that GPE. BZ 6217 (Zhang Rui)
6160 Fixed a problem where NULL package elements were not returned to the
6161 AcpiEvaluateObject interface correctly. The element was simply ignored
6162 instead of returning a NULL ACPI_OBJECT package element, potentially
6164 a buffer overflow and/or confusing the caller who expected a fixed number
6166 elements. BZ 10132 (Lin Ming, Bob Moore)
6168 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
6170 Qword), Field, BankField, and IndexField operators when invoked from
6172 an executing control method. In this case, these operators created
6174 nodes that were incorrectly left marked as permanent nodes instead of
6175 temporary nodes. This could cause a problem if there is race condition
6176 between an exiting control method and a running namespace walk. (Reported
6180 Fixed a problem where the CreateField and CreateXXXField operators would
6181 incorrectly allow duplicate names (the name of the field) with no
6185 Implemented several changes for Notify handling. Added support for new
6187 values (ACPI 2.0+) and improved the Notify debug output. Notify on
6188 PowerResource objects is no longer allowed, as per the ACPI
6190 (Bob Moore, Zhang Rui)
6192 All Reference Objects returned via the AcpiEvaluateObject interface are
6194 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
6196 NULL objects - either NULL package elements or unresolved named
6199 Fixed a problem where an extraneous debug message was produced for
6201 objects (when debugging enabled). The message "Package List length larger
6202 than NumElements count" is now produced in the correct case, and is now
6204 error message rather than a debug message. Added a debug message for the
6205 opposite case, where NumElements is larger than the Package List (the
6207 will be padded out with NULL elements as per the ACPI spec.)
6209 Implemented several improvements for the output of the ASL "Debug" object
6211 clarify and keep all data for a given object on one output line.
6213 Fixed two size calculation issues with the variable-length Start
6215 resource descriptor.
6217 Example Code and Data Size: These are the sizes for the OS-independent
6218 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6219 debug version of the code includes the debug output trace mechanism and
6221 a much larger code and data size.
6224 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
6225 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
6227 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
6228 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
6230 2) iASL Compiler/Disassembler and Tools:
6232 Fixed a problem with the use of the Switch operator where execution of
6234 containing method by multiple concurrent threads could cause an
6235 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
6236 actual Switch opcode, it must be simulated with local named temporary
6237 variables and if/else pairs. The solution chosen was to mark any method
6239 uses Switch as Serialized, thus preventing multiple thread entries. BZ
6242 ----------------------------------------
6243 13 February 2008. Summary of changes for version 20080213:
6245 1) ACPI CA Core Subsystem:
6247 Implemented another MS compatibility design change for GPE/Notify
6249 GPEs are now cleared/enabled asynchronously to allow all pending notifies
6251 complete first. It is expected that the OSL will queue the enable request
6252 behind all pending notify requests (may require changes to the local host
6254 in AcpiOsExecute). Alexey Starikovskiy.
6256 Fixed a problem where buffer and package objects passed as arguments to a
6257 control method via the external AcpiEvaluateObject interface could cause
6259 AE_AML_INTERNAL exception depending on the order and type of operators
6260 executed by the target control method.
6262 Fixed a problem where resource descriptor size optimization could cause a
6263 problem when a _CRS resource template is passed to a _SRS method. The
6265 resource template must use the same descriptors (with the same size) as
6266 returned from _CRS. This change affects the following resource
6268 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
6271 Fixed a problem where a CopyObject to RegionField, BankField, and
6273 objects did not perform an implicit conversion as it should. These types
6275 retain their initial type permanently as per the ACPI specification.
6277 a CopyObject to all other object types should not perform an implicit
6278 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
6280 Fixed a problem with the AcpiGetDevices interface where the mechanism to
6281 match device CIDs did not examine the entire list of available CIDs, but
6282 instead aborted on the first non-matching CID. Andrew Patterson.
6284 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
6286 inadvertently changed to return a 16-bit value instead of a 32-bit value,
6287 truncating the upper dword of a 64-bit value. This macro is only used to
6288 display debug output, so no incorrect calculations were made. Also,
6289 reimplemented the macro so that a 64-bit shift is not performed by
6290 inefficient compilers.
6292 Added missing va_end statements that should correspond with each va_start
6295 Example Code and Data Size: These are the sizes for the OS-independent
6296 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6297 debug version of the code includes the debug output trace mechanism and
6299 a much larger code and data size.
6302 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
6303 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
6305 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
6306 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
6308 2) iASL Compiler/Disassembler and Tools:
6310 Implemented full disassembler support for the following new ACPI tables:
6311 BERT, EINJ, and ERST. Implemented partial disassembler support for the
6312 complicated HEST table. These tables support the Windows Hardware Error
6313 Architecture (WHEA).
6315 ----------------------------------------
6316 23 January 2008. Summary of changes for version 20080123:
6318 1) ACPI CA Core Subsystem:
6320 Added the 2008 copyright to all module headers and signons. This affects
6321 virtually every file in the ACPICA core subsystem, the iASL compiler, and
6322 the tools/utilities.
6324 Fixed a problem with the SizeOf operator when used with Package and
6326 objects. These objects have deferred execution for some arguments, and
6328 execution is now completed before the SizeOf is executed. This problem
6330 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
6334 Implemented an enhancement to the interpreter "slack mode". In the
6337 an explicit return or an implicitly returned object from the last
6339 opcode, a control method will now implicitly return an integer of value 0
6341 Microsoft compatibility. (Lin Ming) BZ 392
6343 Fixed a problem with the Load operator where an exception was not
6346 the case where the table is already loaded. (Lin Ming) BZ 463
6348 Implemented support for the use of DDBHandles as an Indexed Reference, as
6350 the ACPI spec. (Lin Ming) BZ 486
6352 Implemented support for UserTerm (Method invocation) for the Unload
6354 as per the ACPI spec. (Lin Ming) BZ 580
6356 Fixed a problem with the LoadTable operator where the OemId and
6358 input strings could cause unexpected failures if they were shorter than
6360 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
6362 Implemented support for UserTerm (Method invocation) for the Unload
6364 as per the ACPI spec. (Lin Ming) BZ 580
6366 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
6368 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
6370 Example Code and Data Size: These are the sizes for the OS-independent
6371 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6372 debug version of the code includes the debug output trace mechanism and
6374 a much larger code and data size.
6377 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
6378 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
6380 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
6381 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
6383 2) iASL Compiler/Disassembler and Tools:
6385 Implemented support in the disassembler for checksum validation on
6387 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
6389 header dump at the start of the disassembly.
6391 Implemented additional debugging information in the namespace listing
6393 created during compilation. In addition to the namespace hierarchy, the
6395 pathname to each namespace object is displayed.
6397 Fixed a problem with the disassembler where invalid ACPI tables could
6399 faults or infinite loops.
6401 Fixed an unexpected parse error when using the optional "parameter types"
6402 list in a control method declaration. (Lin Ming) BZ 397
6404 Fixed a problem where two External declarations with the same name did
6406 cause an error (Lin Ming) BZ 509
6408 Implemented support for full TermArgs (adding Argx, Localx and method
6409 invocation) for the ParameterData parameter to the LoadTable operator.
6413 ----------------------------------------
6414 19 December 2007. Summary of changes for version 20071219:
6416 1) ACPI CA Core Subsystem:
6418 Implemented full support for deferred execution for the TermArg string
6419 arguments for DataTableRegion. This enables forward references and full
6420 operand resolution for the three string arguments. Similar to
6422 deferred argument execution.) Lin Ming. BZ 430
6424 Implemented full argument resolution support for the BankValue argument
6426 BankField. Previously, only constants were supported, now any TermArg may
6428 used. Lin Ming BZ 387, 393
6430 Fixed a problem with AcpiGetDevices where the search of a branch of the
6431 device tree could be terminated prematurely. In accordance with the ACPI
6432 specification, the search down the current branch is terminated if a
6434 is both not present and not functional (instead of just not present.)
6438 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
6440 the underlying AML code changed the GPE enable registers. Now, any
6442 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
6444 instead of simply ignored. Rui Zhang.
6446 Fixed a problem with Index Fields where the Index register was
6448 limited to a maximum of 32 bits. Now any size may be used.
6450 Fixed a couple memory leaks associated with "implicit return" objects
6452 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
6454 Example Code and Data Size: These are the sizes for the OS-independent
6455 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6456 debug version of the code includes the debug output trace mechanism and
6458 a much larger code and data size.
6461 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
6462 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
6464 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
6465 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
6467 ----------------------------------------
6468 14 November 2007. Summary of changes for version 20071114:
6470 1) ACPI CA Core Subsystem:
6472 Implemented event counters for each of the Fixed Events, the ACPI SCI
6473 (interrupt) itself, and control methods executed. Named
6474 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
6476 should be useful for debugging and statistics.
6478 Implemented a new external interface, AcpiGetStatistics, to retrieve the
6479 contents of the various event counters. Returns the current values for
6480 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
6481 AcpiMethodCount. The interface can be expanded in the future if new
6483 are added. Device drivers should use this interface rather than access
6487 Fixed a problem with the FromBCD and ToBCD operators. With some
6489 the ShortDivide function worked incorrectly, causing problems with the
6491 functions with large input values. A truncation from 64-bit to 32-bit
6492 inadvertently occurred. Internal BZ 435. Lin Ming
6494 Fixed a problem with Index references passed as method arguments.
6496 passed as arguments to control methods were dereferenced immediately
6498 control was passed to the called method). The references are now
6500 passed directly to the called method. BZ 5389. Lin Ming
6502 Fixed a problem with CopyObject used in conjunction with the Index
6504 The reference was incorrectly dereferenced before the copy. The reference
6506 now correctly copied. BZ 5391. Lin Ming
6508 Fixed a problem with Control Method references within Package objects.
6510 references are now correctly generated. This completes the package
6511 construction overhaul that began in version 20071019.
6513 Example Code and Data Size: These are the sizes for the OS-independent
6514 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6515 debug version of the code includes the debug output trace mechanism and
6517 a much larger code and data size.
6520 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
6521 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
6523 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
6524 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
6527 2) iASL Compiler/Disassembler and Tools:
6529 The AcpiExec utility now installs handlers for all of the predefined
6530 Operation Region types. New types supported are: PCI_Config, CMOS, and
6533 Fixed a problem with the 64-bit version of AcpiExec where the extended
6535 bit) address fields for the DSDT and FACS within the FADT were not being
6536 used, causing truncation of the upper 32-bits of these addresses. Lin
6540 ----------------------------------------
6541 19 October 2007. Summary of changes for version 20071019:
6543 1) ACPI CA Core Subsystem:
6545 Fixed a problem with the Alias operator when the target of the alias is a
6546 named ASL operator that opens a new scope -- Scope, Device,
6548 Processor, and ThermalZone. In these cases, any children of the original
6549 operator could not be accessed via the alias, potentially causing
6551 AE_NOT_FOUND exceptions. (BZ 9067)
6553 Fixed a problem with the Package operator where all named references were
6554 created as object references and left otherwise unresolved. According to
6556 ACPI specification, a Package can only contain Data Objects or references
6558 control methods. The implication is that named references to Data Objects
6559 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
6560 immediately upon package creation. This is the approach taken with this
6561 change. References to all other named objects (Methods, Devices, Scopes,
6562 etc.) are all now properly created as reference objects. (BZ 5328)
6564 Reverted a change to Notify handling that was introduced in version
6565 20070508. This version changed the Notify handling from asynchronous to
6566 fully synchronous (Device driver Notify handling with respect to the
6568 ASL operator). It was found that this change caused more problems than it
6569 solved and was removed by most users.
6571 Fixed a problem with the Increment and Decrement operators where the type
6573 the target object could be unexpectedly and incorrectly changed. (BZ 353)
6576 Fixed a problem with the Load and LoadTable operators where the table
6577 location within the namespace was ignored. Instead, the table was always
6578 loaded into the root or current scope. Lin Ming.
6580 Fixed a problem with the Load operator when loading a table from a buffer
6581 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
6583 Fixed a problem with the Debug object where a store of a DdbHandle
6585 object to the Debug object could cause a fault.
6587 Added a table checksum verification for the Load operator, in the case
6589 the load is from a buffer. (BZ 578).
6591 Implemented additional parameter validation for the LoadTable operator.
6593 length of the input strings SignatureString, OemIdString, and OemTableId
6595 now checked for maximum lengths. (BZ 582) Lin Ming.
6597 Example Code and Data Size: These are the sizes for the OS-independent
6598 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6599 debug version of the code includes the debug output trace mechanism and
6601 a much larger code and data size.
6604 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
6605 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
6607 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
6608 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
6611 2) iASL Compiler/Disassembler:
6613 Fixed a problem where if a single file was specified and the file did not
6614 exist, no error message was emitted. (Introduced with wildcard support in
6617 ----------------------------------------
6618 19 September 2007. Summary of changes for version 20070919:
6620 1) ACPI CA Core Subsystem:
6622 Designed and implemented new external interfaces to install and remove
6623 handlers for ACPI table-related events. Current events that are defined
6625 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
6626 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
6627 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
6629 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
6630 (acpi_serialized option on Linux) could cause some systems to hang during
6631 initialization. (Bob Moore) BZ 8171
6633 Fixed a problem where objects of certain types (Device, ThermalZone,
6634 Processor, PowerResource) can be not found if they are declared and
6635 referenced from within the same control method (Lin Ming) BZ 341
6637 Example Code and Data Size: These are the sizes for the OS-independent
6638 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6639 debug version of the code includes the debug output trace mechanism and
6641 a much larger code and data size.
6644 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
6645 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
6647 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
6648 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
6651 2) iASL Compiler/Disassembler:
6653 Implemented support to allow multiple files to be compiled/disassembled
6656 single invocation. This includes command line wildcard support for both
6658 Windows and Unix versions of the compiler. This feature simplifies the
6659 disassembly and compilation of multiple ACPI tables in a single
6662 ----------------------------------------
6663 08 May 2007. Summary of changes for version 20070508:
6665 1) ACPI CA Core Subsystem:
6667 Implemented a Microsoft compatibility design change for the handling of
6669 Notify AML operator. Previously, notify handlers were dispatched and
6670 executed completely asynchronously in a deferred thread. The new design
6671 still executes the notify handlers in a different thread, but the
6673 thread that executed the Notify() now waits at a synchronization point
6675 the notify handler to complete. Some machines depend on a synchronous
6677 operator in order to operate correctly.
6679 Implemented support to allow Package objects to be passed as method
6680 arguments to the external AcpiEvaluateObject interface. Previously, this
6681 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
6682 implemented since there were no reserved control methods that required it
6685 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
6687 contained invalid non-zero values in reserved fields could cause later
6688 failures because these fields have meaning in later revisions of the
6690 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
6692 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
6694 Fixed a problem where the Global Lock handle was not properly updated if
6696 thread that acquired the Global Lock via executing AML code then
6698 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
6702 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
6703 could be corrupted if the interrupt being removed was at the head of the
6704 list. Reported by Linn Crosetto.
6706 Example Code and Data Size: These are the sizes for the OS-independent
6707 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6708 debug version of the code includes the debug output trace mechanism and
6710 a much larger code and data size.
6713 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6714 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
6716 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
6717 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
6719 ----------------------------------------
6720 20 March 2007. Summary of changes for version 20070320:
6722 1) ACPI CA Core Subsystem:
6724 Implemented a change to the order of interpretation and evaluation of AML
6725 operand objects within the AML interpreter. The interpreter now evaluates
6726 operands in the order that they appear in the AML stream (and the
6727 corresponding ASL code), instead of in the reverse order (after the
6729 operand list has been parsed). The previous behavior caused several
6731 incompatibilities with the Microsoft AML interpreter as well as being
6732 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
6734 Implemented a change to the ACPI Global Lock support. All interfaces to
6736 global lock now allow the same thread to acquire the lock multiple times.
6737 This affects the AcpiAcquireGlobalLock external interface to the global
6739 as well as the internal use of the global lock to support AML fields -- a
6740 control method that is holding the global lock can now simultaneously
6742 AML fields that require global lock protection. Previously, in both
6744 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
6746 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
6747 Controller. There is no change to the behavior of the AML Acquire
6749 as this can already be used to acquire a mutex multiple times by the same
6750 thread. BZ 8066. With assistance from Alexey Starikovskiy.
6752 Fixed a problem where invalid objects could be referenced in the AML
6753 Interpreter after error conditions. During operand evaluation, ensure
6755 the internal "Return Object" field is cleared on error and only valid
6756 pointers are stored there. Caused occasional access to deleted objects
6758 resulted in "large reference count" warning messages. Valery Podrezov.
6760 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
6762 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
6765 Fixed an internal problem with the handling of result objects on the
6766 interpreter result stack. BZ 7872. Valery Podrezov.
6768 Removed obsolete code that handled the case where AML_NAME_OP is the
6770 of a reference (Reference.Opcode). This code was no longer necessary. BZ
6771 7874. Valery Podrezov.
6773 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
6776 remnant from the previously discontinued 16-bit support.
6778 Example Code and Data Size: These are the sizes for the OS-independent
6779 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6780 debug version of the code includes the debug output trace mechanism and
6782 a much larger code and data size.
6785 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6786 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6788 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6789 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
6791 ----------------------------------------
6792 26 January 2007. Summary of changes for version 20070126:
6794 1) ACPI CA Core Subsystem:
6796 Added the 2007 copyright to all module headers and signons. This affects
6797 virtually every file in the ACPICA core subsystem, the iASL compiler, and
6800 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
6801 during a table load. A bad pointer was passed in the case where the DSDT
6803 overridden, causing a fault in this case.
6805 Example Code and Data Size: These are the sizes for the OS-independent
6806 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6807 debug version of the code includes the debug output trace mechanism and
6809 a much larger code and data size.
6812 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6813 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6815 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6816 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6818 ----------------------------------------
6819 15 December 2006. Summary of changes for version 20061215:
6821 1) ACPI CA Core Subsystem:
6823 Support for 16-bit ACPICA has been completely removed since it is no
6825 necessary and it clutters the code. All 16-bit macros, types, and
6826 conditional compiles have been removed, cleaning up and simplifying the
6828 across the entire subsystem. DOS support is no longer needed since the
6829 bootable Linux firmware kit is now available.
6831 The handler for the Global Lock is now removed during AcpiTerminate to
6832 enable a clean subsystem restart, via the implementation of the
6833 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
6836 Implemented enhancements to the multithreading support within the
6838 to enable improved multithreading debugging and evaluation of the
6842 Debugger: Enhanced the Statistics/Memory command to emit the total
6844 memory used during the execution, as well as the maximum memory consumed
6846 each of the various object types. (Valery Podrezov)
6848 Example Code and Data Size: These are the sizes for the OS-independent
6849 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6850 debug version of the code includes the debug output trace mechanism and
6852 a much larger code and data size.
6855 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
6856 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
6858 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6859 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6862 2) iASL Compiler/Disassembler and Tools:
6864 AcpiExec: Implemented a new option (-m) to display full memory use
6865 statistics upon subsystem/program termination. (Valery Podrezov)
6867 ----------------------------------------
6868 09 November 2006. Summary of changes for version 20061109:
6870 1) ACPI CA Core Subsystem:
6872 Optimized the Load ASL operator in the case where the source operand is
6874 operation region. Simply map the operation region memory, instead of
6875 performing a bytewise read. (Region must be of type SystemMemory, see
6878 Fixed the Load ASL operator for the case where the source operand is a
6879 region field. A buffer object is also allowed as the source operand. BZ
6882 Fixed a problem where the Load ASL operator allowed the source operand to
6884 an operation region of any type. It is now restricted to regions of type
6885 SystemMemory, as per the ACPI specification. BZ 481
6887 Additional cleanup and optimizations for the new Table Manager code.
6889 AcpiEnable will now fail if all of the required ACPI tables are not
6891 (FADT, FACS, DSDT). BZ 477
6893 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
6895 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
6896 manually optimized to be aligned and will not work if it is byte-packed.
6898 Example Code and Data Size: These are the sizes for the OS-independent
6899 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6900 debug version of the code includes the debug output trace mechanism and
6902 a much larger code and data size.
6905 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
6906 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
6908 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
6909 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
6912 2) iASL Compiler/Disassembler and Tools:
6914 Fixed a problem where the presence of the _OSI predefined control method
6915 within complex expressions could cause an internal compiler error.
6917 AcpiExec: Implemented full region support for multiple address spaces.
6918 SpaceId is now part of the REGION object. BZ 429
6920 ----------------------------------------
6921 11 October 2006. Summary of changes for version 20061011:
6923 1) ACPI CA Core Subsystem:
6925 Completed an AML interpreter performance enhancement for control method
6926 execution. Previously a 2-pass parse/execution, control methods are now
6927 completely parsed and executed in a single pass. This improves overall
6928 interpreter performance by ~25%, reduces code size, and reduces CPU stack
6929 use. (Valery Podrezov + interpreter changes in version 20051202 that
6930 eliminated namespace loading during the pass one parse.)
6932 Implemented _CID support for PCI Root Bridge detection. If the _HID does
6934 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
6936 obtained and also checked for an ID match.
6938 Implemented additional support for the PCI _ADR execution: upsearch until
6940 device scope is found before executing _ADR. This allows PCI_Config
6941 operation regions to be declared locally within control methods
6945 Fixed a problem with a possible race condition between threads executing
6946 AcpiWalkNamespace and the AML interpreter. This condition was removed by
6947 modifying AcpiWalkNamespace to (by default) ignore all temporary
6949 entries created during any concurrent control method execution. An
6950 additional namespace race condition is known to exist between
6951 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
6954 Restructured the AML ParseLoop function, breaking it into several
6955 subfunctions in order to reduce CPU stack use and improve
6959 AcpiGetHandle: Fix for parameter validation to detect invalid
6961 of prefix handle and pathname. BZ 478
6963 Example Code and Data Size: These are the sizes for the OS-independent
6964 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6965 debug version of the code includes the debug output trace mechanism and
6967 a much larger code and data size.
6970 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6971 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
6973 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
6974 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
6976 2) iASL Compiler/Disassembler and Tools:
6978 Ported the -g option (get local ACPI tables) to the new ACPICA Table
6980 to restore original behavior.
6982 ----------------------------------------
6983 27 September 2006. Summary of changes for version 20060927:
6985 1) ACPI CA Core Subsystem:
6987 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
6988 These functions now use a spinlock for mutual exclusion and the interrupt
6989 level indication flag is not needed.
6991 Fixed a problem with the Global Lock where the lock could appear to be
6992 obtained before it is actually obtained. The global lock semaphore was
6993 inadvertently created with one unit instead of zero units. (BZ 464)
6997 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
6999 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
7001 Example Code and Data Size: These are the sizes for the OS-independent
7002 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7003 debug version of the code includes the debug output trace mechanism and
7005 a much larger code and data size.
7008 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
7009 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
7011 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
7012 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
7015 2) iASL Compiler/Disassembler and Tools:
7017 Fixed a compilation problem with the pre-defined Resource Descriptor
7019 names where an "object does not exist" error could be incorrectly
7021 if the parent ResourceTemplate pathname places the template within a
7022 different namespace scope than the current scope. (BZ 7212)
7024 Fixed a problem where the compiler could hang after syntax errors
7026 in an ElseIf construct. (BZ 453)
7028 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
7029 operator. An incorrect output filename was produced when this parameter
7031 a null string (""). Now, the original input filename is used as the AML
7032 output filename, with an ".aml" extension.
7034 Implemented a generic batch command mode for the AcpiExec utility
7036 any AML debugger command) (Valery Podrezov).
7038 ----------------------------------------
7039 12 September 2006. Summary of changes for version 20060912:
7041 1) ACPI CA Core Subsystem:
7043 Enhanced the implementation of the "serialized mode" of the interpreter
7044 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
7045 specified, instead of creating a serialization semaphore per control
7047 the interpreter lock is simply no longer released before a blocking
7048 operation during control method execution. This effectively makes the AML
7049 Interpreter single-threaded. The overhead of a semaphore per-method is
7052 Fixed a regression where an error was no longer emitted if a control
7054 attempts to create 2 objects of the same name. This once again returns
7055 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
7057 will dynamically serialize the control method to possible prevent future
7060 Integrated a fix for a problem with PCI Express HID detection in the PCI
7061 Config Space setup procedure. (BZ 7145)
7063 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
7064 AcpiHwInitialize function - the FADT registers are now validated when the
7067 Added two new warnings during FADT verification - 1) if the FADT is
7069 than the largest known FADT version, and 2) if there is a mismatch
7072 32-bit block address and the 64-bit X counterpart (when both are non-
7075 Example Code and Data Size: These are the sizes for the OS-independent
7076 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7077 debug version of the code includes the debug output trace mechanism and
7079 a much larger code and data size.
7082 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
7083 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
7085 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
7086 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
7089 2) iASL Compiler/Disassembler and Tools:
7091 Fixed a problem with the implementation of the Switch() operator where
7093 temporary variable was declared too close to the actual Switch, instead
7095 at method level. This could cause a problem if the Switch() operator is
7096 within a while loop, causing an error on the second iteration. (BZ 460)
7098 Disassembler - fix for error emitted for unknown type for target of scope
7099 operator. Now, ignore it and continue.
7101 Disassembly of an FADT now verifies the input FADT and reports any errors
7102 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
7104 Disassembly of raw data buffers with byte initialization data now
7106 each output line with the current buffer offset.
7108 Disassembly of ASF! table now includes all variable-length data fields at
7109 the end of some of the subtables.
7111 The disassembler now emits a comment if a buffer appears to be a
7112 ResourceTemplate, but cannot be disassembled as such because the EndTag
7114 not appear at the very end of the buffer.
7116 AcpiExec - Added the "-t" command line option to enable the serialized
7118 of the AML interpreter.
7120 ----------------------------------------
7121 31 August 2006. Summary of changes for version 20060831:
7123 1) ACPI CA Core Subsystem:
7125 Miscellaneous fixes for the Table Manager:
7126 - Correctly initialize internal common FADT for all 64-bit "X" fields
7127 - Fixed a couple table mapping issues during table load
7128 - Fixed a couple alignment issues for IA64
7129 - Initialize input array to zero in AcpiInitializeTables
7130 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
7133 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
7135 immediately disabled to prevent the waking GPE from firing again and to
7136 prevent other wake GPEs from interrupting the wake process.
7138 Added the AcpiGpeCount global that tracks the number of processed GPEs,
7140 be used for debugging systems with a large number of ACPI interrupts.
7142 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
7143 both the ACPICA headers and the disassembler.
7145 Example Code and Data Size: These are the sizes for the OS-independent
7146 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7147 debug version of the code includes the debug output trace mechanism and
7149 a much larger code and data size.
7152 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
7153 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
7155 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
7156 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
7159 2) iASL Compiler/Disassembler and Tools:
7161 Disassembler support for the DMAR ACPI table.
7163 ----------------------------------------
7164 23 August 2006. Summary of changes for version 20060823:
7166 1) ACPI CA Core Subsystem:
7168 The Table Manager component has been completely redesigned and
7169 reimplemented. The new design is much simpler, and reduces the overall
7171 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
7173 now possible to obtain the ACPI tables very early during kernel
7174 initialization, even before dynamic memory management is initialized.
7175 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
7177 Obsolete ACPICA interfaces:
7179 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
7182 - AcpiLoadTable: Not needed.
7183 - AcpiUnloadTable: Not needed.
7185 New ACPICA interfaces:
7187 - AcpiInitializeTables: Must be called before the table manager can be
7189 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
7190 allocated memory after it becomes available.
7191 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
7195 Other ACPICA changes:
7197 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
7199 AcpiOsUnmapMemory to free this mapping.
7200 - AcpiGetTable returns the actual mapped table. The mapping is managed
7201 internally and must not be deleted by the caller. Use of this interface
7202 causes no additional dynamic memory allocation.
7203 - AcpiFindRootPointer: Support for physical addressing has been
7205 it appeared to be unused.
7206 - The interface to AcpiOsMapMemory has changed to be consistent with the
7207 other allocation interfaces.
7208 - The interface to AcpiOsGetRootPointer has changed to eliminate
7211 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
7213 bit platforms. Was previously 64 bits on all platforms.
7214 - The interface to the ACPI Global Lock acquire/release macros have
7216 slightly since ACPICA no longer keeps a local copy of the FACS with a
7217 constructed pointer to the actual global lock.
7219 Porting to the new table manager:
7221 - AcpiInitializeTables: Must be called once, and can be called anytime
7222 during the OS initialization process. It allows the host to specify an
7224 of memory to be used to store the internal version of the RSDT/XSDT (root
7225 table). This allows the host to access ACPI tables before memory
7227 is initialized and running.
7228 - AcpiReallocateRootTable: Can be called after memory management is
7230 to copy the root table to a dynamically allocated array, freeing up the
7231 scratch memory specified in the call to AcpiInitializeTables.
7232 - AcpiSubsystemInitialize: This existing interface is independent of the
7233 Table Manager, and does not have to be called before the Table Manager
7235 be used, it only must be called before the rest of ACPICA can be used.
7236 - ACPI Tables: Some changes have been made to the names and structure of
7238 actbl.h and actbl1.h header files and may require changes to existing
7240 For example, bitfields have been completely removed because of their lack
7242 portability across C compilers.
7243 - Update interfaces to the Global Lock acquire/release macros if local
7244 versions are used. (see acwin.h)
7246 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
7250 Example Code and Data Size: These are the sizes for the OS-independent
7251 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7252 debug version of the code includes the debug output trace mechanism and
7254 a much larger code and data size.
7257 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7258 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7260 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
7261 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
7264 2) iASL Compiler/Disassembler and Tools:
7266 No changes for this release.
7268 ----------------------------------------
7269 21 July 2006. Summary of changes for version 20060721:
7271 1) ACPI CA Core Subsystem:
7273 The full source code for the ASL test suite used to validate the iASL
7274 compiler and the ACPICA core subsystem is being released with the ACPICA
7275 source for the first time. The source is contained in a separate package
7277 consists of over 1100 files that exercise all ASL/AML operators. The
7279 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
7283 Completed a new design and implementation for support of the ACPI Global
7284 Lock. On the OS side, the global lock is now treated as a standard AML
7285 mutex. Previously, multiple OS threads could "acquire" the global lock
7286 simultaneously. However, this could cause the BIOS to be starved out of
7288 lock - especially in cases such as the Embedded Controller driver where
7289 there is a tight coupling between the OS and the BIOS.
7291 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
7292 The Global Lock interrupt handler no longer queues the execution of a
7293 separate thread to signal the global lock semaphore. Instead, the
7295 is signaled directly from the interrupt handler.
7297 Implemented support within the AML interpreter for package objects that
7298 contain a larger AML length (package list length) than the package
7300 count. In this case, the length of the package is truncated to match the
7301 package element count. Some BIOS code apparently modifies the package
7303 on the fly, and this change supports this behavior. Provides
7305 with the MS AML interpreter. (With assistance from Fiodor Suietov)
7307 Implemented a temporary fix for the BankValue parameter of a Bank Field
7309 support all constant values, now including the Zero and One opcodes.
7310 Evaluation of this parameter must eventually be converted to a full
7312 evaluation. A not-implemented error is now returned (temporarily) for
7314 constant values for this parameter.
7316 Fixed problem reports (Fiodor Suietov) integrated:
7317 - Fix for premature object deletion after CopyObject on Operation Region
7321 Example Code and Data Size: These are the sizes for the OS-independent
7322 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7323 debug version of the code includes the debug output trace mechanism and
7325 a much larger code and data size.
7328 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
7329 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
7331 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7332 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7335 2) iASL Compiler/Disassembler and Tools:
7337 No changes for this release.
7339 ----------------------------------------
7340 07 July 2006. Summary of changes for version 20060707:
7342 1) ACPI CA Core Subsystem:
7344 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
7345 that do not allow the initialization of address pointers within packed
7346 structures - even though the hardware itself may support misaligned
7347 transfers. Some of the debug data structures are packed by default to
7350 Added an error message for the case where AcpiOsGetThreadId() returns
7352 A non-zero value is required by the core ACPICA code to ensure the proper
7353 operation of AML mutexes and recursive control methods.
7355 The DSDT is now the only ACPI table that determines whether the AML
7356 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
7358 the hooks for per-table 32/64 switching have been removed from the code.
7360 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
7362 Fixed a possible leak of an OwnerID in the error path of
7363 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
7364 deletion to a single place in AcpiTbUninstallTable to correct possible
7366 when using the AcpiTbDeleteTablesByType interface (with assistance from
7369 Fixed a problem with Serialized control methods where the semaphore
7370 associated with the method could be over-signaled after multiple method
7373 Fixed two issues with the locking of the internal namespace data
7375 Both the Unload() operator and AcpiUnloadTable interface now lock the
7376 namespace during the namespace deletion associated with the table unload
7377 (with assistance from Linn Crosetto.)
7379 Fixed problem reports (Valery Podrezov) integrated:
7380 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
7382 Fixed problem reports (Fiodor Suietov) integrated:
7383 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
7384 - On Address Space handler deletion, needless deactivation call (BZ 374)
7385 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
7387 - Possible memory leak, Notify sub-objects of Processor, Power,
7390 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
7391 - Minimum Length of RSDT should be validated (BZ 379)
7392 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
7394 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
7398 Example Code and Data Size: These are the sizes for the OS-independent
7399 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7400 debug version of the code includes the debug output trace mechanism and
7402 a much larger code and data size.
7405 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
7406 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
7408 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7409 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7412 2) iASL Compiler/Disassembler and Tools:
7414 Fixed problem reports:
7415 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
7418 ----------------------------------------
7419 23 June 2006. Summary of changes for version 20060623:
7421 1) ACPI CA Core Subsystem:
7423 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
7424 allows the type to be customized to the host OS for improved efficiency
7425 (since a spinlock is usually a very small object.)
7427 Implemented support for "ignored" bits in the ACPI registers. According
7429 the ACPI specification, these bits should be preserved when writing the
7430 registers via a read/modify/write cycle. There are 3 bits preserved in
7432 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
7434 Implemented the initial deployment of new OSL mutex interfaces. Since
7436 host operating systems have separate mutex and semaphore objects, this
7437 feature was requested. The base code now uses mutexes (and the new mutex
7438 interfaces) wherever a binary semaphore was used previously. However, for
7439 the current release, the mutex interfaces are defined as macros to map
7441 to the existing semaphore interfaces. Therefore, no OSL changes are
7443 at this time. (See acpiosxf.h)
7445 Fixed several problems with the support for the control method SyncLevel
7446 parameter. The SyncLevel now works according to the ACPI specification
7448 in concert with the Mutex SyncLevel parameter, since the current
7450 is a property of the executing thread. Mutual exclusion for control
7452 is now implemented with a mutex instead of a semaphore.
7454 Fixed three instances of the use of the C shift operator in the bitfield
7455 support code (exfldio.c) to avoid the use of a shift value larger than
7457 target data width. The behavior of C compilers is undefined in this case
7459 can cause unpredictable results, and therefore the case must be detected
7461 avoided. (Fiodor Suietov)
7463 Added an info message whenever an SSDT or OEM table is loaded dynamically
7464 via the Load() or LoadTable() ASL operators. This should improve
7466 capability since it will show exactly what tables have been loaded
7468 the tables present in the RSDT/XSDT.)
7470 Example Code and Data Size: These are the sizes for the OS-independent
7471 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7472 debug version of the code includes the debug output trace mechanism and
7474 a much larger code and data size.
7477 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
7478 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
7480 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
7481 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
7484 2) iASL Compiler/Disassembler and Tools:
7486 No changes for this release.
7488 ----------------------------------------
7489 08 June 2006. Summary of changes for version 20060608:
7491 1) ACPI CA Core Subsystem:
7493 Converted the locking mutex used for the ACPI hardware to a spinlock.
7495 change should eliminate all problems caused by attempting to acquire a
7496 semaphore at interrupt level, and it means that all ACPICA external
7497 interfaces that directly access the ACPI hardware can be safely called
7499 interrupt level. OSL code that implements the semaphore interfaces should
7501 able to eliminate any workarounds for being called at interrupt level.
7503 Fixed a regression introduced in 20060526 where the ACPI device
7504 initialization could be prematurely aborted with an AE_NOT_FOUND if a
7506 did not have an optional _INI method.
7508 Fixed an IndexField issue where a write to the Data Register should be
7509 limited in size to the AccessSize (width) of the IndexField itself. (BZ
7513 Fixed problem reports (Valery Podrezov) integrated:
7514 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
7516 Fixed problem reports (Fiodor Suietov) integrated:
7517 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
7519 Removed four global mutexes that were obsolete and were no longer being
7522 Example Code and Data Size: These are the sizes for the OS-independent
7523 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7524 debug version of the code includes the debug output trace mechanism and
7526 a much larger code and data size.
7529 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
7530 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
7532 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
7533 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
7536 2) iASL Compiler/Disassembler and Tools:
7538 Fixed a fault when using -g option (get tables from registry) on Windows
7541 Fixed problem reports integrated:
7542 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
7543 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
7545 - Global table revision override (-r) is ignored (BZ 413)
7547 ----------------------------------------
7548 26 May 2006. Summary of changes for version 20060526:
7550 1) ACPI CA Core Subsystem:
7552 Restructured, flattened, and simplified the internal interfaces for
7553 namespace object evaluation - resulting in smaller code, less CPU stack
7555 and fewer interfaces. (With assistance from Mikhail Kouzmich)
7557 Fixed a problem with the CopyObject operator where the first parameter
7559 not typed correctly for the parser, interpreter, compiler, and
7561 Caused various errors and unexpected behavior.
7563 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
7564 produced incorrect results with some C compilers. Since the behavior of C
7565 compilers when the shift value is larger than the datatype width is
7566 apparently not well defined, the interpreter now detects this condition
7568 simply returns zero as expected in all such cases. (BZ 395)
7570 Fixed problem reports (Valery Podrezov) integrated:
7571 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
7572 - Allow interpreter to handle nested method declarations (BZ 5361)
7574 Fixed problem reports (Fiodor Suietov) integrated:
7575 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
7577 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
7579 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
7580 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
7581 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
7582 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
7583 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
7584 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
7585 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
7587 - Status of the Global Initialization Handler call not used (BZ 366)
7588 - Incorrect object parameter to Global Initialization Handler (BZ 367)
7590 Example Code and Data Size: These are the sizes for the OS-independent
7591 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7592 debug version of the code includes the debug output trace mechanism and
7594 a much larger code and data size.
7597 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
7598 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
7600 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
7601 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
7604 2) iASL Compiler/Disassembler and Tools:
7606 Modified the parser to allow the names IO, DMA, and IRQ to be used as
7607 namespace identifiers with no collision with existing resource descriptor
7608 macro names. This provides compatibility with other ASL compilers and is
7609 most useful for disassembly/recompilation of existing tables without
7611 errors. (With assistance from Thomas Renninger)
7613 Disassembler: fixed an incorrect disassembly problem with the
7614 DataTableRegion and CopyObject operators. Fixed a possible fault during
7615 disassembly of some Alias operators.
7617 ----------------------------------------
7618 12 May 2006. Summary of changes for version 20060512:
7620 1) ACPI CA Core Subsystem:
7622 Replaced the AcpiOsQueueForExecution interface with a new interface named
7623 AcpiOsExecute. The major difference is that the new interface does not
7625 a Priority parameter, this appeared to be useless and has been replaced
7628 Type parameter. The Type tells the host what type of execution is being
7629 requested, such as global lock handler, notify handler, GPE handler, etc.
7630 This allows the host to queue and execute the request as appropriate for
7632 request type, possibly using different work queues and different
7634 for the various request types. This enables fixes for multithreading
7635 deadlock problems such as BZ #5534, and will require changes to all
7637 OS interface layers. (Alexey Starikovskiy and Bob Moore)
7639 Fixed a possible memory leak associated with the support for the so-
7641 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
7644 Fixed a problem with the Load() operator where a table load from an
7645 operation region could overwrite an internal table buffer by up to 7
7647 and cause alignment faults on IPF systems. (With assistance from Luming
7650 Example Code and Data Size: These are the sizes for the OS-independent
7651 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7652 debug version of the code includes the debug output trace mechanism and
7654 a much larger code and data size.
7657 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
7658 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
7660 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
7661 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
7665 2) iASL Compiler/Disassembler and Tools:
7667 Disassembler: Implemented support to cross reference the internal
7669 and automatically generate ASL External() statements for symbols not
7671 within the current table being disassembled. This will simplify the
7672 disassembly and recompilation of interdependent tables such as SSDTs
7674 these statements will no longer have to be added manually.
7676 Disassembler: Implemented experimental support to automatically detect
7677 invocations of external control methods and generate appropriate
7679 statements. This is problematic because the AML cannot be correctly
7681 until the number of arguments for each control method is known.
7683 standalone method invocations and invocations as the source operand of a
7684 Store() statement are supported.
7686 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
7687 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
7688 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
7689 more readable and likely closer to the original ASL source.
7691 ----------------------------------------
7692 21 April 2006. Summary of changes for version 20060421:
7694 1) ACPI CA Core Subsystem:
7696 Removed a device initialization optimization introduced in 20051216 where
7697 the _STA method was not run unless an _INI was also present for the same
7698 device. This optimization could cause problems because it could allow
7700 methods to be run within a not-present device subtree. (If a not-present
7701 device had no _INI, _STA would not be run, the not-present status would
7703 be discovered, and the children of the device would be incorrectly
7706 Implemented a new _STA optimization where namespace subtrees that do not
7707 contain _INI are identified and ignored during device initialization.
7708 Selectively running _STA can significantly improve boot time on large
7709 machines (with assistance from Len Brown.)
7711 Implemented support for the device initialization case where the returned
7712 _STA flags indicate a device not-present but functioning. In this case,
7714 is not run, but the device children are examined for presence, as per the
7717 Implemented an additional change to the IndexField support in order to
7718 conform to MS behavior. The value written to the Index Register is not
7719 simply a byte offset, it is a byte offset in units of the access width of
7720 the parent Index Field. (Fiodor Suietov)
7722 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
7723 interface is called during the creation of all AML operation regions, and
7724 allows the host OS to exert control over what addresses it will allow the
7725 AML code to access. Operation Regions whose addresses are disallowed will
7726 cause a runtime exception when they are actually accessed (will not
7728 or abort table loading.) See oswinxf or osunixxf for an example
7731 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
7732 interface allows the host OS to match the various "optional"
7733 interface/behavior strings for the _OSI predefined control method as
7734 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
7735 for an example implementation.
7737 Restructured and corrected various problems in the exception handling
7739 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
7740 (with assistance from Takayoshi Kochi.)
7742 Modified the Linux source converter to ignore quoted string literals
7744 converting identifiers from mixed to lower case. This will correct
7746 with the disassembler and other areas where such strings must not be
7749 The ACPI_FUNCTION_* macros no longer require quotes around the function
7750 name. This allows the Linux source converter to convert the names, now
7752 the converter ignores quoted strings.
7754 Example Code and Data Size: These are the sizes for the OS-independent
7755 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7756 debug version of the code includes the debug output trace mechanism and
7758 a much larger code and data size.
7762 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
7763 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
7765 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
7766 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
7769 2) iASL Compiler/Disassembler and Tools:
7771 Implemented 3 new warnings for iASL, and implemented multiple warning
7775 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
7777 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
7778 check for the possible timeout, a warning is issued.
7780 2) Useless operators: If an ASL operator does not specify an optional
7782 operand and it also does not use the function return value from the
7783 operator, a warning is issued since the operator effectively does
7786 3) Unreferenced objects: If a namespace object is created, but never
7787 referenced, a warning is issued. This is a warning level 2 since there
7789 cases where this is ok, such as when a secondary table is loaded that
7791 the unreferenced objects. Even so, care is taken to only flag objects
7793 don't look like they will ever be used. For example, the reserved methods
7794 (starting with an underscore) are usually not referenced because it is
7795 expected that the OS will invoke them.
7797 ----------------------------------------
7798 31 March 2006. Summary of changes for version 20060331:
7800 1) ACPI CA Core Subsystem:
7802 Implemented header file support for the following additional ACPI tables:
7803 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
7805 all current and known ACPI tables are now defined in the ACPICA headers
7807 are available for use by device drivers and other software.
7809 Implemented support to allow tables that contain ACPI names with invalid
7810 characters to be loaded. Previously, this would cause the table load to
7811 fail, but since there are several known cases of such tables on existing
7812 machines, this change was made to enable ACPI support for them. Also,
7814 matches the behavior of the Microsoft ACPI implementation.
7816 Fixed a couple regressions introduced during the memory optimization in
7818 20060317 release. The namespace node definition required additional
7819 reorganization and an internal datatype that had been changed to 8-bit
7821 restored to 32-bit. (Valery Podrezov)
7823 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
7824 could be passed through to AcpiOsReleaseObject which is unexpected. Such
7825 null pointers are now trapped and ignored, matching the behavior of the
7826 previous implementation before the deployment of AcpiOsReleaseObject.
7827 (Valery Podrezov, Fiodor Suietov)
7829 Fixed a memory mapping leak during the deletion of a SystemMemory
7831 region where a cached memory mapping was not deleted. This became a
7832 noticeable problem for operation regions that are defined within
7834 used control methods. (Dana Meyers)
7836 Reorganized the ACPI table header files into two main files: one for the
7837 ACPI tables consumed by the ACPICA core, and another for the
7839 ACPI tables that are consumed by the drivers and other software. The
7841 FADT definitions were merged into one common section and three different
7842 tables (ACPI 1.0, 1.0+, and 2.0)
7844 Example Code and Data Size: These are the sizes for the OS-independent
7845 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7846 debug version of the code includes the debug output trace mechanism and
7848 a much larger code and data size.
7851 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
7852 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
7854 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
7855 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
7858 2) iASL Compiler/Disassembler and Tools:
7860 Disassembler: Implemented support to decode and format all non-AML ACPI
7861 tables (tables other than DSDTs and SSDTs.) This includes the new tables
7862 added to the ACPICA headers, therefore all current and known ACPI tables
7866 Disassembler: The change to allow ACPI names with invalid characters also
7867 enables the disassembly of such tables. Invalid characters within names
7869 changed to '*' to make the name printable; the iASL compiler will still
7870 generate an error for such names, however, since this is an invalid ACPI
7873 Implemented an option for AcpiXtract (-a) to extract all tables found in
7875 input file. The default invocation extracts only the DSDTs and SSDTs.
7877 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
7878 makefile for the AcpiXtract utility.
7880 ----------------------------------------
7881 17 March 2006. Summary of changes for version 20060317:
7883 1) ACPI CA Core Subsystem:
7885 Implemented the use of a cache object for all internal namespace nodes.
7886 Since there are about 1000 static nodes in a typical system, this will
7887 decrease memory use for cache implementations that minimize per-
7889 overhead (such as a slab allocator.)
7891 Removed the reference count mechanism for internal namespace nodes, since
7893 was deemed unnecessary. This reduces the size of each namespace node by
7894 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
7896 and 32 bytes for the 64-bit case.
7898 Optimized several internal data structures to reduce object size on 64-
7900 platforms by packing data within the 64-bit alignment. This includes the
7901 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
7902 instances corresponding to the namespace objects.
7904 Added two new strings for the predefined _OSI method: "Windows 2001.1
7908 Split the allocation tracking mechanism out to a separate file, from
7909 utalloc.c to uttrack.c. This mechanism appears to be only useful for
7910 application-level code. Kernels may wish to not include uttrack.c in
7913 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
7915 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
7918 Code and Data Size: These are the sizes for the acpica.lib produced by
7920 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
7922 driver or OSPM code. The debug version of the code includes the debug
7924 trace mechanism and has a much larger code and data size. Note that these
7925 values will vary depending on the efficiency of the compiler and the
7926 compiler options used during generation.
7929 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7930 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
7932 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
7933 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
7936 2) iASL Compiler/Disassembler and Tools:
7938 Implemented an ANSI C version of the acpixtract utility. This version
7940 automatically extract the DSDT and all SSDTs from the input acpidump text
7941 file and dump the binary output to separate files. It can also display a
7942 summary of the input file including the headers for each table found and
7943 will extract any single ACPI table, with any signature. (See
7944 source/tools/acpixtract)
7946 ----------------------------------------
7947 10 March 2006. Summary of changes for version 20060310:
7949 1) ACPI CA Core Subsystem:
7951 Tagged all external interfaces to the subsystem with the new
7952 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
7954 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
7955 macro. The default definition is NULL.
7957 Added the ACPI_THREAD_ID type for the return value from
7959 This allows the host to define this as necessary to simplify kernel
7960 integration. The default definition is ACPI_NATIVE_UINT.
7962 Fixed two interpreter problems related to error processing, the deletion
7964 objects, and placing invalid pointers onto the internal operator result
7965 stack. BZ 6028, 6151 (Valery Podrezov)
7967 Increased the reference count threshold where a warning is emitted for
7969 reference counts in order to eliminate unnecessary warnings on systems
7971 large namespaces (especially 64-bit.) Increased the value from 0x400 to
7974 Due to universal disagreement as to the meaning of the 'c' in the
7976 function, the ACPI_MEM_CALLOCATE macro has been renamed to
7977 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
7978 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
7981 Code and Data Size: These are the sizes for the acpica.lib produced by
7983 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
7985 driver or OSPM code. The debug version of the code includes the debug
7987 trace mechanism and has a much larger code and data size. Note that these
7988 values will vary depending on the efficiency of the compiler and the
7989 compiler options used during generation.
7992 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
7993 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
7995 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7996 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
7999 2) iASL Compiler/Disassembler:
8001 Disassembler: implemented support for symbolic resource descriptor
8002 references. If a CreateXxxxField operator references a fixed offset
8005 resource descriptor, a name is assigned to the descriptor and the offset
8007 translated to the appropriate resource tag and pathname. The addition of
8008 this support brings the disassembled code very close to the original ASL
8009 source code and helps eliminate run-time errors when the disassembled
8011 is modified (and recompiled) in such a way as to invalidate the original
8014 Implemented support for a Descriptor Name as the last parameter to the
8016 Register() macro. This parameter was inadvertently left out of the ACPI
8017 specification, and will be added for ACPI 3.0b.
8019 Fixed a problem where the use of the "_OSI" string (versus the full path
8020 "\_OSI") caused an internal compiler error. ("No back ptr to op")
8022 Fixed a problem with the error message that occurs when an invalid string
8024 used for a _HID object (such as one with an embedded asterisk:
8026 The correct message is now displayed.
8028 ----------------------------------------
8029 17 February 2006. Summary of changes for version 20060217:
8031 1) ACPI CA Core Subsystem:
8033 Implemented a change to the IndexField support to match the behavior of
8035 Microsoft AML interpreter. The value written to the Index register is now
8037 byte offset, no longer an index based upon the width of the Data
8039 This should fix IndexField problems seen on some machines where the Data
8040 register is not exactly one byte wide. The ACPI specification will be
8041 clarified on this point.
8043 Fixed a problem where several resource descriptor types could overrun the
8044 internal descriptor buffer due to size miscalculation: VendorShort,
8045 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
8046 affect all platforms.
8048 Fixed a problem where individual resource descriptors were misaligned
8050 the internal buffer, causing alignment faults on IA64 platforms.
8052 Code and Data Size: These are the sizes for the acpica.lib produced by
8054 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
8056 driver or OSPM code. The debug version of the code includes the debug
8058 trace mechanism and has a much larger code and data size. Note that these
8059 values will vary depending on the efficiency of the compiler and the
8060 compiler options used during generation.
8063 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
8064 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
8066 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
8067 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
8070 2) iASL Compiler/Disassembler:
8072 Implemented support for new reserved names: _WDG and _WED are Microsoft
8073 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
8074 defined method (Throttling Depth Limit.)
8076 Fixed a problem where a zero-length VendorShort or VendorLong resource
8077 descriptor was incorrectly emitted as a descriptor of length one.
8079 ----------------------------------------
8080 10 February 2006. Summary of changes for version 20060210:
8082 1) ACPI CA Core Subsystem:
8084 Removed a couple of extraneous ACPI_ERROR messages that appeared during
8085 normal execution. These became apparent after the conversion from
8088 Fixed a problem where the CreateField operator could hang if the BitIndex
8090 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
8092 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
8093 failed with an exception. This also fixes a couple of related RefOf and
8094 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
8096 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
8098 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
8102 Implemented a memory cleanup at the end of the execution of each
8104 of an AML While() loop, preventing the accumulation of outstanding
8106 (Valery Podrezov, BZ 5427)
8108 Eliminated a chunk of duplicate code in the object resolution code.
8112 Fixed several warnings during the 64-bit code generation.
8114 The AcpiSrc source code conversion tool now inserts one line of
8116 after an if() statement that is followed immediately by a comment,
8118 readability of the Linux code.
8120 Code and Data Size: The current and previous library sizes for the core
8121 subsystem are shown below. These are the code and data sizes for the
8122 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8124 values do not include any ACPI driver or OSPM code. The debug version of
8126 code includes the debug output trace mechanism and has a much larger code
8127 and data size. Note that these values will vary depending on the
8129 of the compiler and the compiler options used during generation.
8132 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
8133 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
8135 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
8136 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
8139 2) iASL Compiler/Disassembler:
8141 Fixed a problem with the disassembly of a BankField operator with a
8143 expression for the BankValue parameter.
8145 ----------------------------------------
8146 27 January 2006. Summary of changes for version 20060127:
8148 1) ACPI CA Core Subsystem:
8150 Implemented support in the Resource Manager to allow unresolved
8152 references within resource package objects for the _PRT method. This
8154 is in addition to the previously implemented unresolved reference support
8155 within the AML parser. If the interpreter slack mode is enabled, these
8156 unresolved references will be passed through to the caller as a NULL
8160 Implemented and deployed new macros and functions for error and warning
8161 messages across the subsystem. These macros are simpler and generate less
8162 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
8163 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
8164 macros remain defined to allow ACPI drivers time to migrate to the new
8167 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
8169 Acquire/Release Lock OSL interfaces.
8171 Fixed a problem where Alias ASL operators are sometimes not correctly
8172 resolved, in both the interpreter and the iASL compiler.
8174 Fixed several problems with the implementation of the
8175 ConcatenateResTemplate
8176 ASL operator. As per the ACPI specification, zero length buffers are now
8177 treated as a single EndTag. One-length buffers always cause a fatal
8178 exception. Non-zero length buffers that do not end with a full 2-byte
8180 cause a fatal exception.
8182 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
8183 interface. (With assistance from Thomas Renninger)
8185 Code and Data Size: The current and previous library sizes for the core
8186 subsystem are shown below. These are the code and data sizes for the
8187 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8189 values do not include any ACPI driver or OSPM code. The debug version of
8191 code includes the debug output trace mechanism and has a much larger code
8192 and data size. Note that these values will vary depending on the
8194 of the compiler and the compiler options used during generation.
8197 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
8198 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
8200 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
8201 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
8204 2) iASL Compiler/Disassembler:
8206 Fixed an internal error that was generated for any forward references to
8210 ----------------------------------------
8211 13 January 2006. Summary of changes for version 20060113:
8213 1) ACPI CA Core Subsystem:
8215 Added 2006 copyright to all module headers and signons. This affects
8216 virtually every file in the ACPICA core subsystem, iASL compiler, and the
8219 Enhanced the ACPICA error reporting in order to simplify user migration
8221 the non-debug version of ACPICA. Replaced all instances of the
8222 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
8224 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
8225 respectively. This preserves all error and warning messages in the non-
8227 version of the ACPICA code (this has been referred to as the "debug lite"
8228 option.) Over 200 cases were converted to create a total of over 380
8229 error/warning messages across the ACPICA code. This increases the code
8231 data size of the default non-debug version of the code somewhat (about
8233 but all error/warning reporting may be disabled if desired (and code
8234 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
8235 configuration option. The size of the debug version of ACPICA remains
8239 Fixed a memory leak within the AML Debugger "Set" command. One object was
8240 not properly deleted for every successful invocation of the command.
8242 Code and Data Size: The current and previous library sizes for the core
8243 subsystem are shown below. These are the code and data sizes for the
8244 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8246 values do not include any ACPI driver or OSPM code. The debug version of
8248 code includes the debug output trace mechanism and has a much larger code
8249 and data size. Note that these values will vary depending on the
8251 of the compiler and the compiler options used during generation.
8254 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
8255 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
8257 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
8258 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
8261 2) iASL Compiler/Disassembler:
8263 The compiler now officially supports the ACPI 3.0a specification that was
8264 released on December 30, 2005. (Specification is available at
8267 ----------------------------------------
8268 16 December 2005. Summary of changes for version 20051216:
8270 1) ACPI CA Core Subsystem:
8272 Implemented optional support to allow unresolved names within ASL Package
8273 objects. A null object is inserted in the package when a named reference
8274 cannot be located in the current namespace. Enabled via the interpreter
8275 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
8277 that contain such code.
8279 Implemented an optimization to the initialization sequence that can
8281 boot time. During ACPI device initialization, the _STA method is now run
8283 and only if the _INI method exists. The _STA method is used to determine
8285 the device is present; An _INI can only be run if _STA returns present,
8287 it is a waste of time to run the _STA method if the _INI does not exist.
8288 (Prototype and assistance from Dong Wei)
8290 Implemented use of the C99 uintptr_t for the pointer casting macros if it
8292 available in the current compiler. Otherwise, the default (void *) cast
8296 Fixed some possible memory leaks found within the execution path of the
8297 Break, Continue, If, and CreateField operators. (Valery Podrezov)
8299 Fixed a problem introduced in the 20051202 release where an exception is
8300 generated during method execution if a control method attempts to declare
8303 Moved resource descriptor string constants that are used by both the AML
8304 disassembler and AML debugger to the common utilities directory so that
8305 these components are independent.
8307 Implemented support in the AcpiExec utility (-e switch) to globally
8309 exceptions during control method execution (method is not aborted.)
8311 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
8314 Code and Data Size: The current and previous library sizes for the core
8315 subsystem are shown below. These are the code and data sizes for the
8316 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8318 values do not include any ACPI driver or OSPM code. The debug version of
8320 code includes the debug output trace mechanism and has a much larger code
8321 and data size. Note that these values will vary depending on the
8323 of the compiler and the compiler options used during generation.
8326 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8327 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
8329 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
8330 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
8333 2) iASL Compiler/Disassembler:
8335 Fixed a problem where a CPU stack overflow fault could occur if a
8337 method call was made from within a Return statement.
8339 ----------------------------------------
8340 02 December 2005. Summary of changes for version 20051202:
8342 1) ACPI CA Core Subsystem:
8344 Modified the parsing of control methods to no longer create namespace
8345 objects during the first pass of the parse. Objects are now created only
8346 during the execute phase, at the moment the namespace creation operator
8348 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
8350 should eliminate ALREADY_EXISTS exceptions seen on some machines where
8351 reentrant control methods are protected by an AML mutex. The mutex will
8353 correctly block multiple threads from attempting to create the same
8357 Increased the number of available Owner Ids for namespace object tracking
8358 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
8360 some machines with a large number of ACPI tables (either static or
8363 Fixed a problem with the AcpiExec utility where a fault could occur when
8365 -b switch (batch mode) is used.
8367 Enhanced the namespace dump routine to output the owner ID for each
8370 Code and Data Size: The current and previous library sizes for the core
8371 subsystem are shown below. These are the code and data sizes for the
8372 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8374 values do not include any ACPI driver or OSPM code. The debug version of
8376 code includes the debug output trace mechanism and has a much larger code
8377 and data size. Note that these values will vary depending on the
8379 of the compiler and the compiler options used during generation.
8382 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8383 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8385 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8386 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
8389 2) iASL Compiler/Disassembler:
8391 Fixed a parse error during compilation of certain Switch/Case constructs.
8393 simplify the parse, the grammar now allows for multiple Default
8395 and this error is now detected and flagged during the analysis phase.
8397 Disassembler: The disassembly now includes the contents of the original
8398 table header within a comment at the start of the file. This includes the
8399 name and version of the original ASL compiler.
8401 ----------------------------------------
8402 17 November 2005. Summary of changes for version 20051117:
8404 1) ACPI CA Core Subsystem:
8406 Fixed a problem in the AML parser where the method thread count could be
8407 decremented below zero if any errors occurred during the method parse
8409 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
8411 This also fixed a related regression with the mechanism that detects and
8412 corrects methods that cannot properly handle reentrancy (related to the
8413 deployment of the new OwnerId mechanism.)
8415 Eliminated the pre-parsing of control methods (to detect errors) during
8416 table load. Related to the problem above, this was causing unwind issues
8418 any errors occurred during the parse, and it seemed to be overkill. A
8420 load should not be aborted if there are problems with any single control
8421 method, thus rendering this feature rather pointless.
8423 Fixed a problem with the new table-driven resource manager where an
8425 buffer overflow could occur for small resource templates.
8427 Implemented a new external interface, AcpiGetVendorResource. This
8429 will find and return a vendor-defined resource descriptor within a _CRS
8431 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
8434 Removed the length limit (200) on string objects as per the upcoming ACPI
8435 3.0A specification. This affects the following areas of the interpreter:
8437 any implicit conversion of a Buffer to a String, 2) a String object
8439 of the ASL Concatentate operator, 3) the String object result of the ASL
8442 Fixed a problem in the Windows OS interface layer (OSL) where a
8444 on a semaphore object would incorrectly timeout. This allows the
8445 multithreading features of the AcpiExec utility to work properly under
8448 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
8449 the recently added file named "utresrc.c".
8451 Code and Data Size: The current and previous library sizes for the core
8452 subsystem are shown below. These are the code and data sizes for the
8453 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8455 values do not include any ACPI driver or OSPM code. The debug version of
8457 code includes the debug output trace mechanism and has a much larger code
8458 and data size. Note that these values will vary depending on the
8460 of the compiler and the compiler options used during generation.
8463 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
8464 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8466 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8467 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8470 2) iASL Compiler/Disassembler:
8472 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
8473 specification. For the iASL compiler, this means that string literals
8475 the source ASL can be of any length.
8477 Enhanced the listing output to dump the AML code for resource descriptors
8478 immediately after the ASL code for each descriptor, instead of in a block
8480 the end of the entire resource template.
8482 Enhanced the compiler debug output to dump the entire original parse tree
8483 constructed during the parse phase, before any transforms are applied to
8485 tree. The transformed tree is dumped also.
8487 ----------------------------------------
8488 02 November 2005. Summary of changes for version 20051102:
8490 1) ACPI CA Core Subsystem:
8492 Modified the subsystem initialization sequence to improve GPE support.
8494 GPE initialization has been split into two parts in order to defer
8496 of the _PRW methods (Power Resources for Wake) until after the hardware
8498 fully initialized and the SCI handler is installed. This allows the _PRW
8499 methods to access fields protected by the Global Lock. This will fix
8501 where a NO_GLOBAL_LOCK exception has been seen during initialization.
8503 Converted the ACPI internal object disassemble and display code within
8505 AML debugger to fully table-driven operation, reducing code size and
8506 increasing maintainability.
8508 Fixed a regression with the ConcatenateResTemplate() ASL operator
8510 in the 20051021 release.
8512 Implemented support for "local" internal ACPI object types within the
8513 debugger "Object" command and the AcpiWalkNamespace external interfaces.
8514 These local types include RegionFields, BankFields, IndexFields, Alias,
8518 Moved common AML resource handling code into a new file, "utresrc.c".
8520 code is shared by both the Resource Manager and the AML Debugger.
8522 Code and Data Size: The current and previous library sizes for the core
8523 subsystem are shown below. These are the code and data sizes for the
8524 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8526 values do not include any ACPI driver or OSPM code. The debug version of
8528 code includes the debug output trace mechanism and has a much larger code
8529 and data size. Note that these values will vary depending on the
8531 of the compiler and the compiler options used during generation.
8534 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
8535 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
8537 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
8538 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8541 2) iASL Compiler/Disassembler:
8543 Fixed a problem with very large initializer lists (more than 4000
8545 for both Buffer and Package objects where the parse stack could overflow.
8547 Enhanced the pre-compile source code scan for non-ASCII characters to
8549 characters within comment fields. The scan is now always performed and is
8551 longer optional, detecting invalid characters within a source file
8552 immediately rather than during the parse phase or later.
8554 Enhanced the ASL grammar definition to force early reductions on all
8556 style grammar elements so that the overall parse stack usage is greatly
8557 reduced. This should improve performance and reduce the possibility of
8561 Eliminated all reduce/reduce conflicts in the iASL parser generation.
8563 with the addition of a %expected statement, the compiler generates from
8564 source with no warnings.
8566 Fixed a possible segment fault in the disassembler if the input filename
8567 does not contain a "dot" extension (Thomas Renninger).
8569 ----------------------------------------
8570 21 October 2005. Summary of changes for version 20051021:
8572 1) ACPI CA Core Subsystem:
8574 Implemented support for the EM64T and other x86-64 processors. This
8575 essentially entails recognizing that these processors support non-aligned
8576 memory transfers. Previously, all 64-bit processors were assumed to lack
8577 hardware support for non-aligned transfers.
8579 Completed conversion of the Resource Manager to nearly full table-driven
8580 operation. Specifically, the resource conversion code (convert AML to
8581 internal format and the reverse) and the debug code to dump internal
8582 resource descriptors are fully table-driven, reducing code and data size
8584 improving maintainability.
8586 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
8588 on 64-bit processors instead of a fixed 32-bit word. (With assistance
8590 Alexey Starikovskiy)
8592 Implemented support within the resource conversion code for the Type-
8593 Specific byte within the various ACPI 3.0 *WordSpace macros.
8595 Fixed some issues within the resource conversion code for the type-
8597 flags for both Memory and I/O address resource descriptors. For Memory,
8598 implemented support for the MTP and TTP flags. For I/O, split the TRS and
8599 TTP flags into two separate fields.
8601 Code and Data Size: The current and previous library sizes for the core
8602 subsystem are shown below. These are the code and data sizes for the
8603 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8605 values do not include any ACPI driver or OSPM code. The debug version of
8607 code includes the debug output trace mechanism and has a much larger code
8608 and data size. Note that these values will vary depending on the
8610 of the compiler and the compiler options used during generation.
8613 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
8614 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
8616 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
8617 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
8621 2) iASL Compiler/Disassembler:
8623 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
8625 corresponding ResourceSource string was not also present in a resource
8626 descriptor declaration. This restriction caused problems with existing
8627 AML/ASL code that includes the Index byte without the string. When such
8629 was disassembled, it could not be compiled without modification. Further,
8630 the modified code created a resource template with a different size than
8632 original, breaking code that used fixed offsets into the resource
8636 Removed a recent feature of the disassembler to ignore a lone
8638 byte. This byte is now emitted if present so that the exact AML can be
8639 reproduced when the disassembled code is recompiled.
8641 Improved comments and text alignment for the resource descriptor code
8642 emitted by the disassembler.
8644 Implemented disassembler support for the ACPI 3.0 AccessSize field within
8646 Register() resource descriptor.
8648 ----------------------------------------
8649 30 September 2005. Summary of changes for version 20050930:
8651 1) ACPI CA Core Subsystem:
8653 Completed a major overhaul of the Resource Manager code - specifically,
8654 optimizations in the area of the AML/internal resource conversion code.
8656 code has been optimized to simplify and eliminate duplicated code, CPU
8658 use has been decreased by optimizing function parameters and local
8659 variables, and naming conventions across the manager have been
8661 for clarity and ease of maintenance (this includes function, parameter,
8662 variable, and struct/typedef names.) The update may force changes in some
8663 driver code, depending on how resources are handled by the host OS.
8665 All Resource Manager dispatch and information tables have been moved to a
8666 single location for clarity and ease of maintenance. One new file was
8667 created, named "rsinfo.c".
8669 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
8670 guarantee that the argument is not evaluated twice, making them less
8672 to macro side-effects. However, since there exists the possibility of
8673 additional stack use if a particular compiler cannot optimize them (such
8675 in the debug generation case), the original macros are optionally
8677 Note that some invocations of the return_VALUE macro may now cause size
8678 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
8680 eliminate these. (From Randy Dunlap)
8682 Implemented a new mechanism to enable debug tracing for individual
8684 methods. A new external interface, AcpiDebugTrace, is provided to enable
8685 this mechanism. The intent is to allow the host OS to easily enable and
8686 disable tracing for problematic control methods. This interface can be
8687 easily exposed to a user or debugger interface if desired. See the file
8688 psxface.c for details.
8690 AcpiUtCallocate will now return a valid pointer if a length of zero is
8691 specified - a length of one is used and a warning is issued. This matches
8692 the behavior of AcpiUtAllocate.
8694 Code and Data Size: The current and previous library sizes for the core
8695 subsystem are shown below. These are the code and data sizes for the
8696 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8698 values do not include any ACPI driver or OSPM code. The debug version of
8700 code includes the debug output trace mechanism and has a much larger code
8701 and data size. Note that these values will vary depending on the
8703 of the compiler and the compiler options used during generation.
8706 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
8707 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
8709 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
8710 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
8713 2) iASL Compiler/Disassembler:
8715 A remark is issued if the effective compile-time length of a package or
8716 buffer is zero. Previously, this was a warning.
8718 ----------------------------------------
8719 16 September 2005. Summary of changes for version 20050916:
8721 1) ACPI CA Core Subsystem:
8723 Fixed a problem within the Resource Manager where support for the Generic
8724 Register descriptor was not fully implemented. This descriptor is now
8726 recognized, parsed, disassembled, and displayed.
8728 Completely restructured the Resource Manager code to utilize table-driven
8729 dispatch and lookup, eliminating many of the large switch() statements.
8731 reduces overall subsystem code size and code complexity. Affects the
8732 resource parsing and construction, disassembly, and debug dump output.
8734 Cleaned up and restructured the debug dump output for all resource
8735 descriptors. Improved readability of the output and reduced code size.
8737 Fixed a problem where changes to internal data structures caused the
8738 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
8740 Code and Data Size: The current and previous library sizes for the core
8741 subsystem are shown below. These are the code and data sizes for the
8742 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8744 values do not include any ACPI driver or OSPM code. The debug version of
8746 code includes the debug output trace mechanism and has a much larger code
8747 and data size. Note that these values will vary depending on the
8749 of the compiler and the compiler options used during generation.
8752 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
8753 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
8755 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
8756 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
8759 2) iASL Compiler/Disassembler:
8761 Updated the disassembler to automatically insert an EndDependentFn()
8763 into the ASL stream if this macro is missing in the original AML code,
8764 simplifying compilation of the resulting ASL module.
8766 Fixed a problem in the disassembler where a disassembled ResourceSource
8767 string (within a large resource descriptor) was not surrounded by quotes
8769 not followed by a comma, causing errors when the resulting ASL module was
8770 compiled. Also, escape sequences within a ResourceSource string are now
8771 handled correctly (especially "\\")
8773 ----------------------------------------
8774 02 September 2005. Summary of changes for version 20050902:
8776 1) ACPI CA Core Subsystem:
8778 Fixed a problem with the internal Owner ID allocation and deallocation
8779 mechanisms for control method execution and recursive method invocation.
8780 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
8781 messages seen on some systems. Recursive method invocation depth is
8782 currently limited to 255. (Alexey Starikovskiy)
8784 Completely eliminated all vestiges of support for the "module-level
8785 executable code" until this support is fully implemented and debugged.
8787 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
8788 some systems that invoke this support.
8790 Fixed a problem within the resource manager code where the transaction
8792 for a 64-bit address descriptor were handled incorrectly in the type-
8795 Consolidated duplicate code within the address descriptor resource
8797 code, reducing overall subsystem code size.
8799 Fixed a fault when using the AML debugger "disassemble" command to
8800 disassemble individual control methods.
8802 Removed references to the "release_current" directory within the Unix
8805 Code and Data Size: The current and previous core subsystem library sizes
8806 are shown below. These are the code and data sizes for the acpica.lib
8807 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
8808 include any ACPI driver or OSPM code. The debug version of the code
8810 the debug output trace mechanism and has a much larger code and data
8812 Note that these values will vary depending on the efficiency of the
8814 and the compiler options used during generation.
8817 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8818 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
8820 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
8821 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
8824 2) iASL Compiler/Disassembler:
8826 Implemented an error check for illegal duplicate values in the interrupt
8828 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
8831 Implemented error checking for the Irq() and IrqNoFlags() macros to
8833 too many values in the interrupt list (16 max) and invalid values in the
8836 The maximum length string literal within an ASL file is now restricted to
8837 200 characters as per the ACPI specification.
8839 Fixed a fault when using the -ln option (generate namespace listing).
8841 Implemented an error check to determine if a DescriptorName within a
8842 resource descriptor has already been used within the current scope.
8844 ----------------------------------------
8845 15 August 2005. Summary of changes for version 20050815:
8847 1) ACPI CA Core Subsystem:
8849 Implemented a full bytewise compare to determine if a table load request
8851 attempting to load a duplicate table. The compare is performed if the
8853 signatures and table lengths match. This will allow different tables with
8854 the same OEM Table ID and revision to be loaded - probably against the
8856 specification, but discovered in the field nonetheless.
8858 Added the changes.txt logfile to each of the zipped release packages.
8860 Code and Data Size: Current and previous core subsystem library sizes are
8861 shown below. These are the code and data sizes for the acpica.lib
8863 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8864 any ACPI driver or OSPM code. The debug version of the code includes the
8865 debug output trace mechanism and has a much larger code and data size.
8867 that these values will vary depending on the efficiency of the compiler
8869 the compiler options used during generation.
8872 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8873 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
8875 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8876 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
8879 2) iASL Compiler/Disassembler:
8881 Fixed a problem where incorrect AML code could be generated for Package
8882 objects if optimization is disabled (via the -oa switch).
8884 Fixed a problem with where incorrect AML code is generated for variable-
8885 length packages when the package length is not specified and the number
8887 initializer values is greater than 255.
8890 ----------------------------------------
8891 29 July 2005. Summary of changes for version 20050729:
8893 1) ACPI CA Core Subsystem:
8895 Implemented support to ignore an attempt to install/load a particular
8897 table more than once. Apparently there exists BIOS code that repeatedly
8898 attempts to load the same SSDT upon certain events. With assistance from
8899 Venkatesh Pallipadi.
8901 Restructured the main interface to the AML parser in order to correctly
8902 handle all exceptional conditions. This will prevent leakage of the
8904 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
8906 machines. With assistance from Alexey Starikovskiy.
8908 Support for "module level code" has been disabled in this version due to
8910 number of issues that have appeared on various machines. The support can
8912 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
8913 compilation. When the issues are fully resolved, the code will be enabled
8917 Modified the internal functions for debug print support to define the
8918 FunctionName parameter as a (const char *) for compatibility with
8920 built-in macros such as __FUNCTION__, etc.
8922 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
8924 Implemented support to display an object count summary for the AML
8926 commands Object and Methods.
8928 Code and Data Size: Current and previous core subsystem library sizes are
8929 shown below. These are the code and data sizes for the acpica.lib
8931 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8932 any ACPI driver or OSPM code. The debug version of the code includes the
8933 debug output trace mechanism and has a much larger code and data size.
8935 that these values will vary depending on the efficiency of the compiler
8937 the compiler options used during generation.
8940 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
8941 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
8943 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8944 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
8947 2) iASL Compiler/Disassembler:
8949 Fixed a regression that appeared in the 20050708 version of the compiler
8950 where an error message was inadvertently emitted for invocations of the
8952 reserved control method.
8954 ----------------------------------------
8955 08 July 2005. Summary of changes for version 20050708:
8957 1) ACPI CA Core Subsystem:
8959 The use of the CPU stack in the debug version of the subsystem has been
8960 considerably reduced. Previously, a debug structure was declared in every
8961 function that used the debug macros. This structure has been removed in
8962 favor of declaring the individual elements as parameters to the debug
8963 functions. This reduces the cumulative stack use during nested execution
8965 ACPI function calls at the cost of a small increase in the code size of
8967 debug version of the subsystem. With assistance from Alexey Starikovskiy
8971 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
8972 headers to define a macro that will return the current function name at
8973 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
8975 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
8976 compiler-dependent header, the function name is saved on the CPU stack
8978 pointer per function.) This mechanism is used because apparently there
8979 exists no standard ANSI-C defined macro that that returns the function
8982 Redesigned and reimplemented the "Owner ID" mechanism used to track
8983 namespace objects created/deleted by ACPI tables and control method
8984 execution. A bitmap is now used to allocate and free the IDs, thus
8986 the wraparound problem present in the previous implementation. The size
8988 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
8991 Removed the UINT32_BIT and UINT16_BIT types that were used for the
8993 flag definitions within the headers for the predefined ACPI tables. These
8994 have been replaced by UINT8_BIT in order to increase the code portability
8996 the subsystem. If the use of UINT8 remains a problem, we may be forced to
8997 eliminate bitfields entirely because of a lack of portability.
8999 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
9001 is a frequently used function and this improvement increases the
9003 of the entire subsystem (Alexey Starikovskiy).
9005 Fixed several possible memory leaks and the inverse - premature object
9006 deletion (Alexey Starikovskiy).
9008 Code and Data Size: Current and previous core subsystem library sizes are
9009 shown below. These are the code and data sizes for the acpica.lib
9011 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9012 any ACPI driver or OSPM code. The debug version of the code includes the
9013 debug output trace mechanism and has a much larger code and data size.
9015 that these values will vary depending on the efficiency of the compiler
9017 the compiler options used during generation.
9020 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
9021 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
9023 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
9024 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
9026 ----------------------------------------
9027 24 June 2005. Summary of changes for version 20050624:
9029 1) ACPI CA Core Subsystem:
9031 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
9032 the host-defined cache object. This allows the OSL implementation to
9034 and type this object in any manner desired, simplifying the OSL
9035 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
9036 Linux, and should be defined in the OS-specific header file for other
9037 operating systems as required.
9039 Changed the interface to AcpiOsAcquireObject to directly return the
9040 requested object as the function return (instead of ACPI_STATUS.) This
9041 change was made for performance reasons, since this is the purpose of the
9042 interface in the first place. AcpiOsAcquireObject is now similar to the
9043 AcpiOsAllocate interface.
9045 Implemented a new AML debugger command named Businfo. This command
9047 information about all devices that have an associate _PRT object. The
9049 _HID, _UID, and _CID are displayed for these devices.
9051 Modified the initialization sequence in AcpiInitializeSubsystem to call
9053 OSL interface AcpiOslInitialize first, before any local initialization.
9055 change was required because the global initialization now calls OSL
9058 Enhanced the Dump command to display the entire contents of Package
9060 (including all sub-objects and their values.)
9062 Restructured the code base to split some files because of size and/or
9063 because the code logically belonged in a separate file. New files are
9065 below. All makefiles and project files included in the ACPI CA release
9068 utilities/utcache.c /* Local cache interfaces */
9069 utilities/utmutex.c /* Local mutex support */
9070 utilities/utstate.c /* State object support */
9071 interpreter/parser/psloop.c /* Main AML parse loop */
9073 Code and Data Size: Current and previous core subsystem library sizes are
9074 shown below. These are the code and data sizes for the acpica.lib
9076 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9077 any ACPI driver or OSPM code. The debug version of the code includes the
9078 debug output trace mechanism and has a much larger code and data size.
9080 that these values will vary depending on the efficiency of the compiler
9082 the compiler options used during generation.
9085 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
9086 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
9088 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
9089 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
9092 2) iASL Compiler/Disassembler:
9094 Fixed a regression introduced in version 20050513 where the use of a
9096 object within a Case() statement caused a compile time exception. The
9097 original behavior has been restored (a Match() operator is emitted.)
9099 ----------------------------------------
9100 17 June 2005. Summary of changes for version 20050617:
9102 1) ACPI CA Core Subsystem:
9104 Moved the object cache operations into the OS interface layer (OSL) to
9106 the host OS to handle these operations if desired (for example, the Linux
9107 OSL will invoke the slab allocator). This support is optional; the
9109 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
9111 code in the ACPI CA core. The new OSL interfaces are shown below. See
9112 utalloc.c for an example implementation, and acpiosxf.h for the exact
9113 interface definitions. With assistance from Alexey Starikovskiy.
9120 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
9122 and restore a flags parameter. This fits better with many OS lock models.
9123 Note: the current execution state (interrupt handler or not) is no longer
9124 passed to these interfaces. If necessary, the OSL must determine this
9126 by itself, a simple and fast operation. With assistance from Alexey
9129 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
9130 present if the revision of the RSDP was 2 or greater. According to the
9132 specification, the XSDT is optional in all cases, and the table manager
9133 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
9134 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
9138 Fixed an interpreter problem with the Mid() operator in the case of an
9140 string where the resulting output string is of zero length. It now
9142 returns a valid, null terminated string object instead of a string object
9143 with a null pointer.
9145 Fixed a problem with the control method argument handling to allow a
9147 to an Arg object that already contains an object of type Device. The
9149 object is now correctly overwritten. Previously, an error was returned.
9152 Enhanced the debugger Find command to emit object values in addition to
9154 found object pathnames. The output format is the same as the dump
9158 Enhanced the debugger Set command. It now has the ability to set the
9160 of any Named integer object in the namespace (Previously, only method
9162 and args could be set.)
9164 Code and Data Size: Current and previous core subsystem library sizes are
9165 shown below. These are the code and data sizes for the acpica.lib
9167 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9168 any ACPI driver or OSPM code. The debug version of the code includes the
9169 debug output trace mechanism and has a much larger code and data size.
9171 that these values will vary depending on the efficiency of the compiler
9173 the compiler options used during generation.
9176 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
9177 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
9179 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
9180 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
9183 2) iASL Compiler/Disassembler:
9185 Fixed a regression in the disassembler where if/else/while constructs
9187 output incorrectly. This problem was introduced in the previous release
9188 (20050526). This problem also affected the single-step disassembly in the
9191 Fixed a problem where compiling the reserved _OSI method would randomly
9193 rarely) produce compile errors.
9195 Enhanced the disassembler to emit compilable code in the face of
9197 AML resource descriptors. If the optional ResourceSourceIndex is present,
9198 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
9199 disassembly. Otherwise, the resulting code cannot be compiled without
9202 ----------------------------------------
9203 26 May 2005. Summary of changes for version 20050526:
9205 1) ACPI CA Core Subsystem:
9207 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
9208 the module level (not within a control method.) These opcodes are
9210 exactly once at the time the table is loaded. This type of code was legal
9212 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
9214 order to provide backwards compatibility with earlier BIOS
9216 This eliminates the "Encountered executable code at module level" warning
9217 that was previously generated upon detection of such code.
9219 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
9220 inadvertently be generated during the lookup of namespace objects in the
9221 second pass parse of ACPI tables and control methods. It appears that
9223 problem could occur during the resolution of forward references to
9227 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
9228 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
9229 allows the deadlock detection debug code to be compiled out in the normal
9230 case, improving mutex performance (and overall subsystem performance)
9233 Implemented a handful of miscellaneous fixes for possible memory leaks on
9234 error conditions and error handling control paths. These fixes were
9235 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
9237 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
9239 to prevent a fault in this error case.
9241 Code and Data Size: Current and previous core subsystem library sizes are
9242 shown below. These are the code and data sizes for the acpica.lib
9244 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9245 any ACPI driver or OSPM code. The debug version of the code includes the
9246 debug output trace mechanism and has a much larger code and data size.
9248 that these values will vary depending on the efficiency of the compiler
9250 the compiler options used during generation.
9253 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9254 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9256 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
9257 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
9260 2) iASL Compiler/Disassembler:
9262 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
9263 the module level (not within a control method.) These operators will be
9264 executed once at the time the table is loaded. This type of code was
9266 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
9267 compiler in order to provide backwards compatibility with earlier BIOS
9271 The ACPI integer width (specified via the table revision ID or the -r
9272 override, 32 or 64 bits) is now used internally during compile-time
9274 folding to ensure that constants are truncated to 32 bits if necessary.
9275 Previously, the revision ID value was only emitted in the AML table
9278 An error message is now generated for the Mutex and Method operators if
9280 SyncLevel parameter is outside the legal range of 0 through 15.
9282 Fixed a problem with the Method operator ParameterTypes list handling
9284 3.0). Previously, more than 2 types or 2 arguments generated a syntax
9286 The actual underlying implementation of method argument typechecking is
9287 still under development, however.
9289 ----------------------------------------
9290 13 May 2005. Summary of changes for version 20050513:
9292 1) ACPI CA Core Subsystem:
9294 Implemented support for PCI Express root bridges -- added support for
9296 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
9298 The interpreter now automatically truncates incoming 64-bit constants to
9300 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
9302 also affects the iASL compiler constant folding. (Note: as per below, the
9303 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
9305 Fixed a problem where string and buffer objects with "static" pointers
9306 (pointers to initialization data within an ACPI table) were not handled
9307 consistently. The internal object copy operation now always copies the
9309 to a newly allocated buffer, regardless of whether the source object is
9312 Fixed a problem with the FromBCD operator where an implicit result
9313 conversion was improperly performed while storing the result to the
9315 operand. Since this is an "explicit conversion" operator, the implicit
9316 conversion should never be performed on the output.
9318 Fixed a problem with the CopyObject operator where a copy to an existing
9319 named object did not always completely overwrite the existing object
9321 at name. Specifically, a buffer-to-buffer copy did not delete the
9325 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
9327 structs for consistency.
9329 Code and Data Size: Current and previous core subsystem library sizes are
9330 shown below. These are the code and data sizes for the acpica.lib
9332 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9333 any ACPI driver or OSPM code. The debug version of the code includes the
9334 debug output trace mechanism and has a much larger code and data size.
9336 that these values will vary depending on the efficiency of the compiler
9338 the compiler options used during generation.
9341 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9342 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9343 Current Release: (Same sizes)
9344 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9345 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9348 2) iASL Compiler/Disassembler:
9350 The compiler now emits a warning if an attempt is made to generate a 64-
9352 integer constant from within a 32-bit ACPI table (Revision < 2). The
9354 is truncated to 32 bits.
9356 Fixed a problem with large package objects: if the static length of the
9357 package is greater than 255, the "variable length package" opcode is
9358 emitted. Previously, this caused an error. This requires an update to the
9359 ACPI spec, since it currently (incorrectly) states that packages larger
9361 255 elements are not allowed.
9363 The disassembler now correctly handles variable length packages and
9365 larger than 255 elements.
9367 ----------------------------------------
9368 08 April 2005. Summary of changes for version 20050408:
9370 1) ACPI CA Core Subsystem:
9372 Fixed three cases in the interpreter where an "index" argument to an ASL
9373 function was still (internally) 32 bits instead of the required 64 bits.
9374 This was the Index argument to the Index, Mid, and Match operators.
9376 The "strupr" function is now permanently local (AcpiUtStrupr), since this
9378 not a POSIX-defined function and not present in most kernel-level C
9379 libraries. All references to the C library strupr function have been
9383 Completed the deployment of static functions/prototypes. All prototypes
9385 the static attribute have been moved from the headers to the owning C
9388 Implemented an extract option (-e) for the AcpiBin utility (AML binary
9389 utility). This option allows the utility to extract individual ACPI
9391 from the output of AcpiDmp. It provides the same functionality of the
9392 acpixtract.pl perl script without the worry of setting the correct perl
9393 options. AcpiBin runs on Windows and has not yet been generated/validated
9395 the Linux/Unix environment (but should be soon).
9397 Updated and fixed the table dump option for AcpiBin (-d). This option
9398 converts a single ACPI table to a hex/ascii file, similar to the output
9402 Code and Data Size: Current and previous core subsystem library sizes are
9403 shown below. These are the code and data sizes for the acpica.lib
9405 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9406 any ACPI driver or OSPM code. The debug version of the code includes the
9407 debug output trace mechanism and has a much larger code and data size.
9409 that these values will vary depending on the efficiency of the compiler
9411 the compiler options used during generation.
9414 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
9415 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
9417 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9418 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9421 2) iASL Compiler/Disassembler:
9423 Disassembler fix: Added a check to ensure that the table length found in
9425 ACPI table header within the input file is not longer than the actual
9427 file size. This indicates some kind of file or table corruption.
9429 ----------------------------------------
9430 29 March 2005. Summary of changes for version 20050329:
9432 1) ACPI CA Core Subsystem:
9434 An error is now generated if an attempt is made to create a Buffer Field
9436 length zero (A CreateField with a length operand of zero.)
9438 The interpreter now issues a warning whenever executable code at the
9440 level is detected during ACPI table load. This will give some idea of the
9441 prevalence of this type of code.
9443 Implemented support for references to named objects (other than control
9444 methods) within package objects.
9446 Enhanced package object output for the debug object. Package objects are
9448 completely dumped, showing all elements.
9450 Enhanced miscellaneous object output for the debug object. Any object can
9451 now be written to the debug object (for example, a device object can be
9452 written, and the type of the object will be displayed.)
9454 The "static" qualifier has been added to all local functions across both
9456 core subsystem and the iASL compiler.
9458 The number of "long" lines (> 80 chars) within the source has been
9459 significantly reduced, by about 1/3.
9461 Cleaned up all header files to ensure that all CA/iASL functions are
9462 prototyped (even static functions) and the formatting is consistent.
9464 Two new header files have been added, acopcode.h and acnames.h.
9466 Removed several obsolete functions that were no longer used.
9468 Code and Data Size: Current and previous core subsystem library sizes are
9469 shown below. These are the code and data sizes for the acpica.lib
9471 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9472 any ACPI driver or OSPM code. The debug version of the code includes the
9473 debug output trace mechanism and has a much larger code and data size.
9475 that these values will vary depending on the efficiency of the compiler
9477 the compiler options used during generation.
9480 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9481 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
9483 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
9484 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
9488 2) iASL Compiler/Disassembler:
9490 Fixed a problem with the resource descriptor generation/support. For the
9491 ResourceSourceIndex and the ResourceSource fields, both must be present,
9493 both must be not present - can't have one without the other.
9495 The compiler now returns non-zero from the main procedure if any errors
9497 occurred during the compilation.
9500 ----------------------------------------
9501 09 March 2005. Summary of changes for version 20050309:
9503 1) ACPI CA Core Subsystem:
9505 The string-to-buffer implicit conversion code has been modified again
9507 a change to the ACPI specification. In order to match the behavior of
9509 other major ACPI implementation, the target buffer is no longer truncated
9511 the source string is smaller than an existing target buffer. This change
9512 requires an update to the ACPI spec, and should eliminate the recent
9513 AE_AML_BUFFER_LIMIT issues.
9515 The "implicit return" support was rewritten to a new algorithm that
9517 the general case. Rather than attempt to determine when a method is about
9519 exit, the result of every ASL operator is saved momentarily until the
9521 next ASL operator is executed. Therefore, no matter how the method exits,
9522 there will always be a saved implicit return value. This feature is only
9523 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
9525 AE_AML_NO_RETURN_VALUE errors when enabled.
9527 Implemented implicit conversion support for the predicate (operand) of
9529 If, Else, and While operators. String and Buffer arguments are
9531 converted to Integers.
9533 Changed the string-to-integer conversion behavior to match the new ACPI
9534 errata: "If no integer object exists, a new integer is created. The ASCII
9535 string is interpreted as a hexadecimal constant. Each string character is
9536 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
9537 with the first character as the most significant digit, and ending with
9539 first non-hexadecimal character or end-of-string." This means that the
9541 non-hex character terminates the conversion and this is the code that was
9544 Fixed a problem where the ObjectType operator would fail (fault) when
9546 on an Index of a Package which pointed to a null package element. The
9547 operator now properly returns zero (Uninitialized) in this case.
9549 Fixed a problem where the While operator used excessive memory by not
9550 properly popping the result stack during execution. There was no memory
9552 after execution, however. (Code provided by Valery Podrezov.)
9554 Fixed a problem where references to control methods within Package
9556 caused the method to be invoked, instead of producing a reference object
9557 pointing to the method.
9559 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
9561 improve performance and reduce code size. (Code provided by Alexey
9564 Code and Data Size: Current and previous core subsystem library sizes are
9565 shown below. These are the code and data sizes for the acpica.lib
9567 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9568 any ACPI driver or OSPM code. The debug version of the code includes the
9569 debug output trace mechanism and has a much larger code and data size.
9571 that these values will vary depending on the efficiency of the compiler
9573 the compiler options used during generation.
9576 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9577 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
9579 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9580 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
9583 2) iASL Compiler/Disassembler:
9585 Fixed a problem with the Return operator with no arguments. Since the AML
9586 grammar for the byte encoding requires an operand for the Return opcode,
9588 compiler now emits a Return(Zero) for this case. An ACPI specification
9589 update has been written for this case.
9591 For tables other than the DSDT, namepath optimization is automatically
9592 disabled. This is because SSDTs can be loaded anywhere in the namespace,
9594 compiler has no knowledge of where, and thus cannot optimize namepaths.
9596 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
9597 inadvertently omitted from the ACPI specification, and will require an
9600 The source file scan for ASCII characters is now optional (-a). This
9602 was made because some vendors place non-ascii characters within comments.
9603 However, the scan is simply a brute-force byte compare to ensure all
9604 characters in the file are in the range 0x00 to 0x7F.
9606 Fixed a problem with the CondRefOf operator where the compiler was
9607 inappropriately checking for the existence of the target. Since the point
9609 the operator is to check for the existence of the target at run-time, the
9610 compiler no longer checks for the target existence.
9612 Fixed a problem where errors generated from the internal AML interpreter
9613 during constant folding were not handled properly, causing a fault.
9615 Fixed a problem with overly aggressive range checking for the Stall
9616 operator. The valid range (max 255) is now only checked if the operand is
9618 type Integer. All other operand types cannot be statically checked.
9620 Fixed a problem where control method references within the RefOf,
9622 and ObjectType operators were not treated properly. They are now treated
9624 actual references, not method invocations.
9626 Fixed and enhanced the "list namespace" option (-ln). This option was
9628 a number of releases ago.
9630 Improved error handling for the Field, IndexField, and BankField
9632 The compiler now cleanly reports and recovers from errors in the field
9633 component (FieldUnit) list.
9635 Fixed a disassembler problem where the optional ResourceDescriptor fields
9636 TRS and TTP were not always handled correctly.
9638 Disassembler - Comments in output now use "//" instead of "/*"
9640 ----------------------------------------
9641 28 February 2005. Summary of changes for version 20050228:
9643 1) ACPI CA Core Subsystem:
9645 Fixed a problem where the result of an Index() operator (an object
9646 reference) must increment the reference count on the target object for
9648 life of the object reference.
9650 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
9651 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
9653 resource descriptors.
9655 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
9656 Space Descriptor" string, indicating interpreter support for the
9660 Implemented header support for the new ACPI 3.0 FADT flag bits.
9662 Implemented header support for the new ACPI 3.0 PCI Express bits for the
9664 status/enable registers.
9666 Updated header support for the MADT processor local Apic struct and MADT
9667 platform interrupt source struct for new ACPI 3.0 fields.
9669 Implemented header support for the SRAT and SLIT ACPI tables.
9671 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
9675 Code and Data Size: Current and previous core subsystem library sizes are
9676 shown below. These are the code and data sizes for the acpica.lib
9678 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9679 any ACPI driver or OSPM code. The debug version of the code includes the
9680 debug output trace mechanism and has a much larger code and data size.
9682 that these values will vary depending on the efficiency of the compiler
9684 the compiler options used during generation.
9687 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
9688 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
9690 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9691 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
9694 2) iASL Compiler/Disassembler:
9696 Fixed a problem with the internal 64-bit String-to-integer conversion
9698 strings less than two characters long.
9700 Fixed a problem with constant folding where the result of the Index()
9701 operator can not be considered a constant. This means that Index() cannot
9703 a type3 opcode and this will require an update to the ACPI specification.
9705 Disassembler: Implemented support for the TTP, MTP, and TRS resource
9706 descriptor fields. These fields were inadvertently ignored and not output
9708 the disassembly of the resource descriptor.
9711 ----------------------------------------
9712 11 February 2005. Summary of changes for version 20050211:
9714 1) ACPI CA Core Subsystem:
9716 Implemented ACPI 3.0 support for implicit conversion within the Match()
9717 operator. MatchObjects can now be of type integer, buffer, or string
9719 of just type integer. Package elements are implicitly converted to the
9721 of the MatchObject. This change aligns the behavior of Match() with the
9722 behavior of the other logical operators (LLess(), etc.) It also requires
9724 errata change to the ACPI specification as this support was intended for
9725 ACPI 3.0, but was inadvertently omitted.
9727 Fixed a problem with the internal implicit "to buffer" conversion.
9729 that are converted to buffers will cause buffer truncation if the string
9731 smaller than the target buffer. Integers that are converted to buffers
9733 not cause buffer truncation, only zero extension (both as per the ACPI
9734 spec.) The problem was introduced when code was added to truncate the
9735 buffer, but this should not be performed in all cases, only the string
9738 Fixed a problem with the Buffer and Package operators where the
9740 would get confused if two such operators were used as operands to an ASL
9741 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
9742 stack was not being popped after the execution of these operators,
9744 in an AE_NO_RETURN_VALUE exception.
9746 Fixed a problem with constructs of the form Store(Index(...),...). The
9747 reference object returned from Index was inadvertently resolved to an
9749 value. This problem was introduced in version 20050114 when the behavior
9751 Store() was modified to restrict the object types that can be used as the
9752 source operand (to match the ACPI specification.)
9754 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
9756 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
9758 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
9760 Code and Data Size: Current and previous core subsystem library sizes are
9761 shown below. These are the code and data sizes for the acpica.lib
9763 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9764 any ACPI driver or OSPM code. The debug version of the code includes the
9765 debug output trace mechanism and has a much larger code and data size.
9767 that these values will vary depending on the efficiency of the compiler
9769 the compiler options used during generation.
9772 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
9773 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
9775 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
9776 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
9779 2) iASL Compiler/Disassembler:
9781 Fixed a code generation problem in the constant folding optimization code
9782 where incorrect code was generated if a constant was reduced to a buffer
9783 object (i.e., a reduced type 5 opcode.)
9785 Fixed a typechecking problem for the ToBuffer operator. Caused by an
9786 incorrect return type in the internal opcode information table.
9788 ----------------------------------------
9789 25 January 2005. Summary of changes for version 20050125:
9791 1) ACPI CA Core Subsystem:
9793 Fixed a recently introduced problem with the Global Lock where the
9794 underlying semaphore was not created. This problem was introduced in
9795 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
9796 Acquire() operation on _GL.
9798 The local object cache is now optional, and is disabled by default. Both
9799 AcpiExec and the iASL compiler enable the cache because they run in user
9800 mode and this enhances their performance. #define
9801 ACPI_ENABLE_OBJECT_CACHE
9802 to enable the local cache.
9804 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
9806 optional "implicit return" support where an error was returned if no
9808 object was expected, but one was implicitly returned. AE_OK is now
9810 in this case and the implicitly returned object is deleted.
9811 AcpiUtEvaluateObject is only occasionally used, and only to execute
9813 methods such as _STA and _INI where the return type is known up front.
9815 Fixed a few issues with the internal convert-to-integer code. It now
9817 an error if an attempt is made to convert a null string, a string of only
9818 blanks/tabs, or a zero-length buffer. This affects both implicit
9820 and explicit conversion via the ToInteger() operator.
9822 The internal debug code in AcpiUtAcquireMutex has been commented out. It
9824 not needed for normal operation and should increase the performance of
9826 entire subsystem. The code remains in case it is needed for debug
9830 The AcpiExec source and makefile are included in the Unix/Linux package
9834 Code and Data Size: Current and previous core subsystem library sizes are
9835 shown below. These are the code and data sizes for the acpica.lib
9837 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9838 any ACPI driver or OSPM code. The debug version of the code includes the
9839 debug output trace mechanism and has a much larger code and data size.
9841 that these values will vary depending on the efficiency of the compiler
9843 the compiler options used during generation.
9846 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
9847 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
9849 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
9850 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
9852 2) iASL Compiler/Disassembler:
9854 Switch/Case support: A warning is now issued if the type of the Switch
9856 cannot be determined at compile time. For example, Switch(Arg0) will
9857 generate the warning, and the type is assumed to be an integer. As per
9859 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
9863 Switch/Case support: Implemented support for buffer and string objects as
9864 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
9865 buffers and strings.
9867 Switch/Case support: The emitted code for the LEqual() comparisons now
9869 the switch value as the first operand, not the second. The case value is
9871 the second operand, and this allows the case value to be implicitly
9872 converted to the type of the switch value, not the other way around.
9874 Switch/Case support: Temporary variables are now emitted immediately
9876 the control method, not at the global level. This means that there are
9878 36 temps available per-method, not 36 temps per-module as was the case
9880 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
9882 ----------------------------------------
9883 14 January 2005. Summary of changes for version 20050114:
9885 Added 2005 copyright to all module headers. This affects every module in
9886 the core subsystem, iASL compiler, and the utilities.
9888 1) ACPI CA Core Subsystem:
9890 Fixed an issue with the String-to-Buffer conversion code where the string
9891 null terminator was not included in the buffer after conversion, but
9893 is existing ASL that assumes the string null terminator is included. This
9895 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
9896 introduced in the previous version when the code was updated to correctly
9897 set the converted buffer size as per the ACPI specification. The ACPI
9899 is ambiguous and will be updated to specify that the null terminator must
9901 included in the converted buffer. This also affects the ToBuffer() ASL
9904 Fixed a problem with the Mid() ASL/AML operator where it did not work
9905 correctly on Buffer objects. Newly created sub-buffers were not being
9910 Fixed a problem in AcpiTbFindTable where incorrect string compares were
9911 performed on the OemId and OemTableId table header fields. These fields
9913 not null terminated, so strncmp is now used instead of strcmp.
9915 Implemented a restriction on the Store() ASL/AML operator to align the
9916 behavior with the ACPI specification. Previously, any object could be
9918 as the source operand. Now, the only objects that may be used are
9920 Buffers, Strings, Packages, Object References, and DDB Handles. If
9921 necessary, the original behavior can be restored by enabling the
9922 EnableInterpreterSlack flag.
9924 Enhanced the optional "implicit return" support to allow an implicit
9926 value from methods that are invoked externally via the AcpiEvaluateObject
9927 interface. This enables implicit returns from the _STA and _INI methods,
9930 Changed the Revision() ASL/AML operator to return the current version of
9932 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
9934 the supported ACPI version (This is the function of the _REV method).
9936 Updated the _REV predefined method to return the currently supported
9940 Implemented batch mode option for the AcpiExec utility (-b).
9942 Code and Data Size: Current and previous core subsystem library sizes are
9943 shown below. These are the code and data sizes for the acpica.lib
9945 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9946 any ACPI driver or OSPM code. The debug version of the code includes the
9947 debug output trace mechanism and has a much larger code and data size.
9949 that these values will vary depending on the efficiency of the compiler
9951 the compiler options used during generation.
9954 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9955 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
9957 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
9958 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
9960 ----------------------------------------
9961 10 December 2004. Summary of changes for version 20041210:
9963 ACPI 3.0 support is nearing completion in both the iASL compiler and the
9964 ACPI CA core subsystem.
9966 1) ACPI CA Core Subsystem:
9968 Fixed a problem in the ToDecimalString operator where the resulting
9970 length was incorrectly calculated. The length is now calculated exactly,
9971 eliminating incorrect AE_STRING_LIMIT exceptions.
9973 Fixed a problem in the ToHexString operator to allow a maximum 200
9975 string to be produced.
9977 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
9979 routine where the length of the resulting buffer was not truncated to the
9980 new size (if the target buffer already existed).
9982 Code and Data Size: Current and previous core subsystem library sizes are
9983 shown below. These are the code and data sizes for the acpica.lib
9985 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9986 any ACPI driver or OSPM code. The debug version of the code includes the
9987 debug output trace mechanism and has a much larger code and data size.
9989 that these values will vary depending on the efficiency of the compiler
9991 the compiler options used during generation.
9994 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9995 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
9997 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9998 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
10001 2) iASL Compiler/Disassembler:
10003 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
10004 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
10005 Includes support in the disassembler.
10007 Implemented support for the new (ACPI 3.0) parameter to the Register
10011 Fixed a problem where the _HE resource name for the Interrupt macro was
10012 referencing bit 0 instead of bit 1.
10014 Implemented check for maximum 255 interrupts in the Interrupt macro.
10016 Fixed a problem with the predefined resource descriptor names where
10017 incorrect AML code was generated if the offset within the resource buffer
10018 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
10019 but did not update the surrounding package lengths.
10021 Changes to the Dma macro: All channels within the channel list must be
10023 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
10024 optional (default is BusMaster).
10026 Implemented check for maximum 7 data bytes for the VendorShort macro.
10028 The ReadWrite parameter is now optional for the Memory32 and similar
10031 ----------------------------------------
10032 03 December 2004. Summary of changes for version 20041203:
10034 1) ACPI CA Core Subsystem:
10036 The low-level field insertion/extraction code (exfldio) has been
10038 rewritten to eliminate unnecessary complexity, bugs, and boundary
10041 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
10043 operators where the input operand could be inadvertently deleted if no
10044 conversion was necessary (e.g., if the input to ToInteger was an Integer
10047 Fixed a problem with the ToDecimalString and ToHexString where an
10049 exception code was returned if the resulting string would be > 200 chars.
10050 AE_STRING_LIMIT is now returned.
10052 Fixed a problem with the Concatenate operator where AE_OK was always
10053 returned, even if the operation failed.
10055 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
10056 semaphores to be allocated.
10058 Code and Data Size: Current and previous core subsystem library sizes are
10059 shown below. These are the code and data sizes for the acpica.lib
10061 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10062 any ACPI driver or OSPM code. The debug version of the code includes the
10063 debug output trace mechanism and has a much larger code and data size.
10065 that these values will vary depending on the efficiency of the compiler
10067 the compiler options used during generation.
10070 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10071 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10073 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10074 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
10077 2) iASL Compiler/Disassembler:
10079 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
10080 recently introduced in 20041119.
10082 Fixed a problem with the ToUUID macro where the upper nybble of each
10084 byte was inadvertently set to zero.
10086 ----------------------------------------
10087 19 November 2004. Summary of changes for version 20041119:
10089 1) ACPI CA Core Subsystem:
10091 Fixed a problem in the internal ConvertToInteger routine where new
10093 were not truncated to 32 bits for 32-bit ACPI tables. This routine
10095 buffers and strings to integers.
10097 Implemented support to store a value to an Index() on a String object.
10099 is an ACPI 2.0 feature that had not yet been implemented.
10101 Implemented new behavior for storing objects to individual package
10103 (via the Index() operator). The previous behavior was to invoke the
10105 conversion rules if an object was already present at the index. The new
10106 behavior is to simply delete any existing object and directly store the
10108 object. Although the ACPI specification seems unclear on this subject,
10110 ACPI implementations behave in this manner. (This is the root of the
10111 AE_BAD_HEX_CONSTANT issue.)
10113 Modified the RSDP memory scan mechanism to support the extended checksum
10115 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
10116 RSDP signature is found with a valid checksum.
10118 Code and Data Size: Current and previous core subsystem library sizes are
10119 shown below. These are the code and data sizes for the acpica.lib
10121 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10122 any ACPI driver or OSPM code. The debug version of the code includes the
10123 debug output trace mechanism and has a much larger code and data size.
10125 that these values will vary depending on the efficiency of the compiler
10127 the compiler options used during generation.
10130 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10131 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10133 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10134 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10137 2) iASL Compiler/Disassembler:
10139 Fixed a missing semicolon in the aslcompiler.y file.
10141 ----------------------------------------
10142 05 November 2004. Summary of changes for version 20041105:
10144 1) ACPI CA Core Subsystem:
10146 Implemented support for FADT revision 2. This was an interim table
10148 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
10150 Implemented optional support to allow uninitialized LocalX and ArgX
10151 variables in a control method. The variables are initialized to an
10153 object with a value of zero. This support is enabled by setting the
10154 AcpiGbl_EnableInterpreterSlack flag to TRUE.
10156 Implemented support for Integer objects for the SizeOf operator. Either
10158 or 8 is returned, depending on the current integer size (32-bit or 64-
10160 depending on the parent table revision).
10162 Fixed a problem in the implementation of the SizeOf and ObjectType
10164 where the operand was resolved to a value too early, causing incorrect
10165 return values for some objects.
10167 Fixed some possible memory leaks during exceptional conditions.
10169 Code and Data Size: Current and previous core subsystem library sizes are
10170 shown below. These are the code and data sizes for the acpica.lib
10172 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10173 any ACPI driver or OSPM code. The debug version of the code includes the
10174 debug output trace mechanism and has a much larger code and data size.
10176 that these values will vary depending on the efficiency of the compiler
10178 the compiler options used during generation.
10181 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10182 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
10184 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10185 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10188 2) iASL Compiler/Disassembler:
10190 Implemented support for all ACPI 3.0 reserved names and methods.
10192 Implemented all ACPI 3.0 grammar elements in the front-end, including
10193 support for semicolons.
10195 Implemented the ACPI 3.0 Function() and ToUUID() macros
10197 Fixed a problem in the disassembler where a Scope() operator would not be
10198 emitted properly if the target of the scope was in another table.
10200 ----------------------------------------
10201 15 October 2004. Summary of changes for version 20041015:
10203 Note: ACPI CA is currently undergoing an in-depth and complete formal
10204 evaluation to test/verify the following areas. Other suggestions are
10205 welcome. This will result in an increase in the frequency of releases and
10206 the number of bug fixes in the next few months.
10207 - Functional tests for all ASL/AML operators
10208 - All implicit/explicit type conversions
10209 - Bit fields and operation regions
10210 - 64-bit math support and 32-bit-only "truncated" math support
10211 - Exceptional conditions, both compiler and interpreter
10212 - Dynamic object deletion and memory leaks
10213 - ACPI 3.0 support when implemented
10214 - External interfaces to the ACPI subsystem
10217 1) ACPI CA Core Subsystem:
10219 Fixed two alignment issues on 64-bit platforms - within debug statements
10221 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
10223 field within the non-aligned ACPI generic address structure.
10225 Fixed a problem in the Increment and Decrement operators where incorrect
10226 operand resolution could result in the inadvertent modification of the
10227 original integer when the integer is passed into another method as an
10228 argument and the arg is then incremented/decremented.
10230 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
10232 BCD number were truncated during conversion.
10234 Fixed a problem in the ToDecimal operator where the length of the
10236 string could be set incorrectly too long if the input operand was a
10240 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
10242 within a buffer would prematurely terminate a compare between buffer
10245 Added a check for string overflow (>200 characters as per the ACPI
10246 specification) during the Concatenate operator with two string operands.
10248 Code and Data Size: Current and previous core subsystem library sizes are
10249 shown below. These are the code and data sizes for the acpica.lib
10251 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10252 any ACPI driver or OSPM code. The debug version of the code includes the
10253 debug output trace mechanism and has a much larger code and data size.
10255 that these values will vary depending on the efficiency of the compiler
10257 the compiler options used during generation.
10260 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10261 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
10263 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10264 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
10268 2) iASL Compiler/Disassembler:
10270 Allow the use of the ObjectType operator on uninitialized Locals and Args
10271 (returns 0 as per the ACPI specification).
10273 Fixed a problem where the compiler would fault if there was a syntax
10275 in the FieldName of all of the various CreateXXXField operators.
10277 Disallow the use of lower case letters within the EISAID macro, as per
10279 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
10281 U is an uppercase letter and N is a hex digit.
10284 ----------------------------------------
10285 06 October 2004. Summary of changes for version 20041006:
10287 1) ACPI CA Core Subsystem:
10289 Implemented support for the ACPI 3.0 Timer operator. This ASL function
10290 implements a 64-bit timer with 100 nanosecond granularity.
10292 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
10293 implement the ACPI 3.0 Timer operator. This allows the host OS to
10295 the timer with the best clock available. Also, it keeps the core
10297 out of the clock handling business, since the host OS (usually) performs
10300 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
10301 functions use a 64-bit address which is part of the packed ACPI Generic
10302 Address Structure. Since the structure is non-aligned, the alignment
10304 are now used to extract the address to a local variable before use.
10306 Fixed a problem where the ToInteger operator assumed all input strings
10308 hexadecimal. The operator now handles both decimal strings and hex
10310 (prefixed with "0x").
10312 Fixed a problem where the string length in the string object created as a
10313 result of the internal ConvertToString procedure could be incorrect. This
10314 potentially affected all implicit conversions and also the
10316 and ToHexString operators.
10318 Fixed two problems in the ToString operator. If the length parameter was
10319 zero, an incorrect string object was created and the value of the input
10320 length parameter was inadvertently changed from zero to Ones.
10322 Fixed a problem where the optional ResourceSource string in the
10324 resource macro was ignored.
10326 Simplified the interfaces to the internal division functions, reducing
10328 size and complexity.
10330 Code and Data Size: Current and previous core subsystem library sizes are
10331 shown below. These are the code and data sizes for the acpica.lib
10333 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10334 any ACPI driver or OSPM code. The debug version of the code includes the
10335 debug output trace mechanism and has a much larger code and data size.
10337 that these values will vary depending on the efficiency of the compiler
10339 the compiler options used during generation.
10342 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
10343 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
10345 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10346 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
10349 2) iASL Compiler/Disassembler:
10351 Implemented support for the ACPI 3.0 Timer operator.
10353 Fixed a problem where the Default() operator was inadvertently ignored in
10355 Switch/Case block. This was a problem in the translation of the Switch
10356 statement to If...Else pairs.
10358 Added support to allow a standalone Return operator, with no parentheses
10362 Fixed a problem with code generation for the ElseIf operator where the
10363 translated Else...If parse tree was improperly constructed leading to the
10366 ----------------------------------------
10367 22 September 2004. Summary of changes for version 20040922:
10369 1) ACPI CA Core Subsystem:
10371 Fixed a problem with the implementation of the LNot() operator where
10373 was not returned for the TRUE case. Changed the code to return Ones
10375 of (!Arg) which was usually 1. This change affects iASL constant folding
10377 this operator also.
10379 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
10381 initialized properly -- Now zero the entire buffer in this case where the
10382 buffer already exists.
10384 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
10385 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
10386 related code considerably. This will require changes/updates to all OS
10387 interface layers (OSLs.)
10389 Implemented a new external interface, AcpiInstallExceptionHandler, to
10391 a system exception handler to be installed. This handler is invoked upon
10393 run-time exception that occurs during control method execution.
10395 Added support for the DSDT in AcpiTbFindTable. This allows the
10396 DataTableRegion() operator to access the local copy of the DSDT.
10398 Code and Data Size: Current and previous core subsystem library sizes are
10399 shown below. These are the code and data sizes for the acpica.lib
10401 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10402 any ACPI driver or OSPM code. The debug version of the code includes the
10403 debug output trace mechanism and has a much larger code and data size.
10405 that these values will vary depending on the efficiency of the compiler
10407 the compiler options used during generation.
10410 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
10411 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
10413 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
10414 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
10417 2) iASL Compiler/Disassembler:
10419 Fixed a problem with constant folding and the LNot operator. LNot was
10420 returning 1 in the TRUE case, not Ones as per the ACPI specification.
10422 could result in the generation of an incorrect folded/reduced constant.
10424 End-Of-File is now allowed within a "//"-style comment. A parse error no
10425 longer occurs if such a comment is at the very end of the input ASL
10429 Implemented the "-r" option to override the Revision in the table header.
10430 The initial use of this option will be to simplify the evaluation of the
10432 interpreter by allowing a single ASL source module to be compiled for
10434 32-bit or 64-bit integers.
10437 ----------------------------------------
10438 27 August 2004. Summary of changes for version 20040827:
10440 1) ACPI CA Core Subsystem:
10442 - Implemented support for implicit object conversion in the non-numeric
10443 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
10445 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
10446 the second operand is implicitly converted on the fly to match the type
10448 the first operand. For example:
10450 LEqual (Source1, Source2)
10452 Source1 and Source2 must each evaluate to an integer, a string, or a
10454 The data type of Source1 dictates the required type of Source2. Source2
10456 implicitly converted if necessary to match the type of Source1.
10458 - Updated and corrected the behavior of the string conversion support.
10460 rules concerning conversion of buffers to strings (according to the ACPI
10461 specification) are as follows:
10463 ToDecimalString - explicit byte-wise conversion of buffer to string of
10464 decimal values (0-255) separated by commas. ToHexString - explicit byte-
10466 conversion of buffer to string of hex values (0-FF) separated by commas.
10467 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
10469 copy with no transform except NULL terminated. Any other implicit buffer-
10471 string conversion - byte-wise conversion of buffer to string of hex
10473 (0-FF) separated by spaces.
10475 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
10477 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
10479 one byte too short in the case of a node in the root scope. This could
10480 cause a fault during debug output.
10482 - Code and Data Size: Current and previous core subsystem library sizes
10484 shown below. These are the code and data sizes for the acpica.lib
10486 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10487 any ACPI driver or OSPM code. The debug version of the code includes the
10488 debug output trace mechanism and has a much larger code and data size.
10490 that these values will vary depending on the efficiency of the compiler
10492 the compiler options used during generation.
10495 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
10496 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
10498 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
10499 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
10502 2) iASL Compiler/Disassembler:
10504 - Fixed a Linux generation error.
10507 ----------------------------------------
10508 16 August 2004. Summary of changes for version 20040816:
10510 1) ACPI CA Core Subsystem:
10512 Designed and implemented support within the AML interpreter for the so-
10513 called "implicit return". This support returns the result of the last
10515 operation within a control method, in the absence of an explicit Return()
10516 operator. A few machines depend on this behavior, even though it is not
10517 explicitly supported by the ASL language. It is optional support that
10519 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
10521 Removed support for the PCI_Config address space from the internal low
10523 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
10524 support was not used internally, and would not work correctly anyway
10526 the PCI bus number and segment number were not supported. There are
10527 separate interfaces for PCI configuration space access because of the
10531 Code and Data Size: Current and previous core subsystem library sizes are
10532 shown below. These are the code and data sizes for the acpica.lib
10534 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10535 any ACPI driver or OSPM code. The debug version of the code includes the
10536 debug output trace mechanism and has a much larger code and data size.
10538 that these values will vary depending on the efficiency of the compiler
10540 the compiler options used during generation.
10543 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10544 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
10546 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
10547 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
10550 2) iASL Compiler/Disassembler:
10552 Fixed a problem where constants in ASL expressions at the root level (not
10553 within a control method) could be inadvertently truncated during code
10554 generation. This problem was introduced in the 20040715 release.
10557 ----------------------------------------
10558 15 July 2004. Summary of changes for version 20040715:
10560 1) ACPI CA Core Subsystem:
10562 Restructured the internal HW GPE interfaces to pass/track the current
10564 of interrupts (enabled/disabled) in order to avoid possible deadlock and
10565 increase flexibility of the interfaces.
10567 Implemented a "lexicographical compare" for String and Buffer objects
10569 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
10571 as per further clarification to the ACPI specification. Behavior is
10573 to C library "strcmp".
10575 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
10576 external function. In the 32-bit non-debug case, the stack use has been
10577 reduced from 168 bytes to 32 bytes.
10579 Deployed a new run-time configuration flag,
10580 AcpiGbl_EnableInterpreterSlack,
10581 whose purpose is to allow the AML interpreter to forgive certain bad AML
10582 constructs. Default setting is FALSE.
10584 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
10586 support code. If enabled, it allows field access to go beyond the end of
10588 region definition if the field is within the region length rounded up to
10590 next access width boundary (a common coding error.)
10592 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
10593 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
10595 symbols are lowercased by the latest version of the AcpiSrc tool.
10597 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
10598 rename "Register" to simply "Reg" to prevent certain compilers from
10601 Code and Data Size: Current and previous core subsystem library sizes are
10602 shown below. These are the code and data sizes for the acpica.lib
10604 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10605 any ACPI driver or OSPM code. The debug version of the code includes the
10606 debug output trace mechanism and has a much larger code and data size.
10608 that these values will vary depending on the efficiency of the compiler
10610 the compiler options used during generation.
10613 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10614 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
10616 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10617 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
10620 2) iASL Compiler/Disassembler:
10622 Implemented full support for Package objects within the Case() operator.
10623 Note: The Break() operator is currently not supported within Case blocks
10624 (TermLists) as there is some question about backward compatibility with
10629 Fixed a problem where complex terms were not supported properly within
10633 Eliminated extraneous warning for compiler-emitted reserved names of the
10634 form "_T_x". (Used in Switch/Case operators.)
10636 Eliminated optimization messages for "_T_x" objects and small constants
10637 within the DefinitionBlock operator.
10640 ----------------------------------------
10641 15 June 2004. Summary of changes for version 20040615:
10643 1) ACPI CA Core Subsystem:
10645 Implemented support for Buffer and String objects (as per ACPI 2.0) for
10647 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
10650 All directory names in the entire source package are lower case, as they
10651 were in earlier releases.
10653 Implemented "Disassemble" command in the AML debugger that will
10655 a single control method.
10657 Code and Data Size: Current and previous core subsystem library sizes are
10658 shown below. These are the code and data sizes for the acpica.lib
10660 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10661 any ACPI driver or OSPM code. The debug version of the code includes the
10662 debug output trace mechanism and has a much larger code and data size.
10664 that these values will vary depending on the efficiency of the compiler
10666 the compiler options used during generation.
10669 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
10670 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
10673 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10674 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
10677 2) iASL Compiler/Disassembler:
10679 Implemented support for Buffer and String objects (as per ACPI 2.0) for
10681 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
10684 All directory names in the entire source package are lower case, as they
10685 were in earlier releases.
10687 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
10690 Fixed an issue with the Windows version of the compiler where later
10692 of Windows place the FADT in the registry under the name "FADT" and not
10693 "FACP" as earlier versions did. This applies when using the -g or -
10694 d<nofilename> options. The compiler now looks for both strings as
10697 Fixed a problem with compiler namepath optimization where a namepath
10699 the Scope() operator could not be optimized if the namepath was a subpath
10701 the current scope path.
10703 ----------------------------------------
10704 27 May 2004. Summary of changes for version 20040527:
10706 1) ACPI CA Core Subsystem:
10708 Completed a new design and implementation for EBDA (Extended BIOS Data
10710 support in the RSDP scan code. The original code improperly scanned for
10712 EBDA by simply scanning from memory location 0 to 0x400. The correct
10714 is to first obtain the EBDA pointer from within the BIOS data area, then
10715 scan 1K of memory starting at the EBDA pointer. There appear to be few
10717 any machines that place the RSDP in the EBDA, however.
10719 Integrated a fix for a possible fault during evaluation of BufferField
10720 arguments. Obsolete code that was causing the problem was removed.
10722 Found and fixed a problem in the Field Support Code where data could be
10723 corrupted on a bit field read that starts on an aligned boundary but does
10724 not end on an aligned boundary. Merged the read/write "datum length"
10725 calculation code into a common procedure.
10727 Rolled in a couple of changes to the FreeBSD-specific header.
10730 Code and Data Size: Current and previous core subsystem library sizes are
10731 shown below. These are the code and data sizes for the acpica.lib
10733 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10734 any ACPI driver or OSPM code. The debug version of the code includes the
10735 debug output trace mechanism and has a much larger code and data size.
10737 that these values will vary depending on the efficiency of the compiler
10739 the compiler options used during generation.
10742 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10743 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
10745 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
10746 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
10749 2) iASL Compiler/Disassembler:
10751 Fixed a generation warning produced by some overly-verbose compilers for
10755 ----------------------------------------
10756 14 May 2004. Summary of changes for version 20040514:
10758 1) ACPI CA Core Subsystem:
10760 Fixed a problem where hardware GPE enable bits sometimes not set properly
10761 during and after GPE method execution. Result of 04/27 changes.
10763 Removed extra "clear all GPEs" when sleeping/waking.
10765 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
10766 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
10768 the new AcpiEv* calls as appropriate.
10770 ACPI_OS_NAME was removed from the OS-specific headers. The default name
10772 now "Microsoft Windows NT" for maximum compatibility. However this can
10774 changed by modifying the acconfig.h file.
10776 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
10777 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
10779 Run _INI methods on ThermalZone objects. This is against the ACPI
10780 specification, but there is apparently ASL code in the field that has
10782 _INI methods, and apparently "other" AML interpreters execute them.
10784 Performed a full 16/32/64 bit lint that resulted in some small changes.
10786 Added a sleep simulation command to the AML debugger to test sleep code.
10788 Code and Data Size: Current and previous core subsystem library sizes are
10789 shown below. These are the code and data sizes for the acpica.lib
10791 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10792 any ACPI driver or OSPM code. The debug version of the code includes the
10793 debug output trace mechanism and has a much larger code and data size.
10795 that these values will vary depending on the efficiency of the compiler
10797 the compiler options used during generation.
10800 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10801 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
10803 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10804 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
10806 ----------------------------------------
10807 27 April 2004. Summary of changes for version 20040427:
10809 1) ACPI CA Core Subsystem:
10811 Completed a major overhaul of the GPE handling within ACPI CA. There are
10812 now three types of GPEs: wake-only, runtime-only, and combination
10814 The only GPEs allowed to be combination wake/run are for button-style
10815 devices such as a control-method power button, control-method sleep
10817 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
10819 referenced by any _PRW methods are marked for "runtime" and hardware
10820 enabled. Any GPE that is referenced by a _PRW method is marked for
10822 (and disabled at runtime). However, at sleep time, only those GPEs that
10823 have been specifically enabled for wake via the AcpiEnableGpe interface
10825 actually be hardware enabled.
10827 A new external interface has been added, AcpiSetGpeType(), that is meant
10829 be used by device drivers to force a GPE to a particular type. It will
10831 especially useful for the drivers for the button devices mentioned above.
10833 Completed restructuring of the ACPI CA initialization sequence so that
10834 default operation region handlers are installed before GPEs are
10836 and the _PRW methods are executed. This will prevent errors when the
10838 methods attempt to access system memory or I/O space.
10840 GPE enable/disable no longer reads the GPE enable register. We now keep
10842 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
10843 thus no longer depend on the hardware to maintain these bits.
10845 Always clear the wake status and fixed/GPE status bits before sleep, even
10848 Improved the AML debugger output for displaying the GPE blocks and their
10851 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
10855 Fixed a problem where the physical address was incorrectly calculated
10857 the Load() operator was used to directly load from an Operation Region
10859 loading from a Field object.) Also added check for minimum table length
10863 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
10866 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
10867 consistency with the other fields returned.
10869 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
10870 structure for each GPE in the system, so the size of this structure is
10873 CPU stack requirement reduction: Cleaned up the method execution and
10875 evaluation paths so that now a parameter structure is passed, instead of
10876 copying the various method parameters over and over again.
10878 In evregion.c: Correctly exit and reenter the interpreter region if and
10879 only if dispatching an operation region request to a user-installed
10881 Do not exit/reenter when dispatching to a default handler (e.g., default
10882 system memory or I/O handlers)
10885 Notes for updating drivers for the new GPE support. The following
10887 must be made to ACPI-related device drivers that are attached to one or
10889 GPEs: (This information will be added to the ACPI CA Programmer
10892 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
10894 explicitly call AcpiEnableGpe.
10895 2) There is a new interface called AcpiSetGpeType. This should be called
10896 before enabling the GPE. Also, this interface will automatically disable
10897 the GPE if it is currently enabled.
10898 3) AcpiEnableGpe no longer supports a GPE type flag.
10900 Specific drivers that must be changed:
10902 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
10903 AeGpeHandler, NULL);
10904 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
10905 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
10907 2) Button Drivers (Power, Lid, Sleep):
10908 Run _PRW method under parent device
10909 If _PRW exists: /* This is a control-method button */
10910 Extract GPE number and possibly GpeDevice
10911 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
10912 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
10914 For all other devices that have _PRWs, we automatically set the GPE type
10916 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
10918 must be done on a selective basis, usually requiring some kind of user
10920 to allow the user to pick the wake devices.
10923 Code and Data Size: Current and previous core subsystem library sizes are
10924 shown below. These are the code and data sizes for the acpica.lib
10926 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10927 any ACPI driver or OSPM code. The debug version of the code includes the
10928 debug output trace mechanism and has a much larger code and data size.
10930 that these values will vary depending on the efficiency of the compiler
10932 the compiler options used during generation.
10935 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
10936 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
10939 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10940 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
10944 ----------------------------------------
10945 02 April 2004. Summary of changes for version 20040402:
10947 1) ACPI CA Core Subsystem:
10949 Fixed an interpreter problem where an indirect store through an ArgX
10950 parameter was incorrectly applying the "implicit conversion rules" during
10951 the store. From the ACPI specification: "If the target is a method local
10953 argument (LocalX or ArgX), no conversion is performed and the result is
10954 stored directly to the target". The new behavior is to disable implicit
10955 conversion during ALL stores to an ArgX.
10957 Changed the behavior of the _PRW method scan to ignore any and all errors
10958 returned by a given _PRW. This prevents the scan from aborting from the
10959 failure of any single _PRW.
10961 Moved the runtime configuration parameters from the global init procedure
10963 static variables in acglobal.h. This will allow the host to override the
10964 default values easily.
10966 Code and Data Size: Current and previous core subsystem library sizes are
10967 shown below. These are the code and data sizes for the acpica.lib
10969 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10970 any ACPI driver or OSPM code. The debug version of the code includes the
10971 debug output trace mechanism and has a much larger code and data size.
10973 that these values will vary depending on the efficiency of the compiler
10975 the compiler options used during generation.
10978 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
10979 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
10981 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
10982 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
10985 2) iASL Compiler/Disassembler:
10987 iASL now fully disassembles SSDTs. However, External() statements are
10989 generated automatically for unresolved symbols at this time. This is a
10990 planned feature for future implementation.
10992 Fixed a scoping problem in the disassembler that occurs when the type of
10994 target of a Scope() operator is overridden. This problem caused an
10995 incorrectly nested internal namespace to be constructed.
10997 Any warnings or errors that are emitted during disassembly are now
10999 out automatically so that the resulting file can be recompiled without
11003 ----------------------------------------
11004 26 March 2004. Summary of changes for version 20040326:
11006 1) ACPI CA Core Subsystem:
11008 Implemented support for "wake" GPEs via interaction between GPEs and the
11009 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
11010 identified as a WAKE GPE and by default will no longer be enabled at
11011 runtime. Previously, we were blindly enabling all GPEs with a
11013 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
11015 believe this has been the cause of thousands of "spurious" GPEs on some
11018 This new GPE behavior is can be reverted to the original behavior (enable
11019 ALL GPEs at runtime) via a runtime flag.
11021 Fixed a problem where aliased control methods could not access objects
11022 properly. The proper scope within the namespace was not initialized
11023 (transferred to the target of the aliased method) before executing the
11026 Fixed a potential race condition on internal object deletion on the
11028 object in AcpiEvaluateObject.
11030 Integrated a fix for resource descriptors where both _MEM and _MTP were
11031 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
11032 wide, 0x0F instead of 0x03.)
11034 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
11037 fault in some cases.
11039 Updated Notify() values for debug statements in evmisc.c
11041 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
11043 Code and Data Size: Current and previous core subsystem library sizes are
11044 shown below. These are the code and data sizes for the acpica.lib
11046 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11047 any ACPI driver or OSPM code. The debug version of the code includes the
11048 debug output trace mechanism and has a much larger code and data size.
11050 that these values will vary depending on the efficiency of the compiler
11052 the compiler options used during generation.
11056 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
11057 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
11059 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
11060 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
11062 ----------------------------------------
11063 11 March 2004. Summary of changes for version 20040311:
11065 1) ACPI CA Core Subsystem:
11067 Fixed a problem where errors occurring during the parse phase of control
11068 method execution did not abort cleanly. For example, objects created and
11069 installed in the namespace were not deleted. This caused all subsequent
11070 invocations of the method to return the AE_ALREADY_EXISTS exception.
11072 Implemented a mechanism to force a control method to "Serialized"
11074 if the method attempts to create namespace objects. (The root of the
11075 AE_ALREADY_EXISTS problem.)
11077 Implemented support for the predefined _OSI "internal" control method.
11078 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
11080 "Windows 2001.1", and can be easily upgraded for new strings as
11082 This feature will allow "other" operating systems to execute the fully
11083 tested, "Windows" code path through the ASL code
11085 Global Lock Support: Now allows multiple acquires and releases with any
11086 internal thread. Removed concept of "owning thread" for this special
11089 Fixed two functions that were inappropriately declaring large objects on
11091 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
11093 method execution considerably.
11095 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
11096 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
11098 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
11099 defined on the machine.
11101 Implemented two runtime options: One to force all control method
11103 to "Serialized" to mimic Windows behavior, another to disable _OSI
11105 if it causes problems on a given machine.
11107 Code and Data Size: Current and previous core subsystem library sizes are
11108 shown below. These are the code and data sizes for the acpica.lib
11110 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11111 any ACPI driver or OSPM code. The debug version of the code includes the
11112 debug output trace mechanism and has a much larger code and data size.
11114 that these values will vary depending on the efficiency of the compiler
11116 the compiler options used during generation.
11119 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
11120 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
11122 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
11123 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
11125 2) iASL Compiler/Disassembler:
11127 Fixed an array size problem for FreeBSD that would cause the compiler to
11130 ----------------------------------------
11131 20 February 2004. Summary of changes for version 20040220:
11134 1) ACPI CA Core Subsystem:
11136 Implemented execution of _SxD methods for Device objects in the
11137 GetObjectInfo interface.
11139 Fixed calls to _SST method to pass the correct arguments.
11141 Added a call to _SST on wake to restore to "working" state.
11143 Check for End-Of-Buffer failure case in the WalkResources interface.
11145 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
11146 structures to the beginning of the file.
11148 After wake, clear GPE status register(s) before enabling GPEs.
11150 After wake, clear/enable power button. (Perhaps we should clear/enable
11152 fixed events upon wake.)
11154 Fixed a couple of possible memory leaks in the Namespace manager.
11156 Integrated latest acnetbsd.h file.
11158 ----------------------------------------
11159 11 February 2004. Summary of changes for version 20040211:
11162 1) ACPI CA Core Subsystem:
11164 Completed investigation and implementation of the call-by-reference
11165 mechanism for control method arguments.
11167 Fixed a problem where a store of an object into an indexed package could
11168 fail if the store occurs within a different method than the method that
11169 created the package.
11171 Fixed a problem where the ToDecimal operator could return incorrect
11174 Fixed a problem where the CopyObject operator could fail on some of the
11176 obscure objects (e.g., Reference objects.)
11178 Improved the output of the Debug object to display buffer, package, and
11181 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
11183 the expected result.
11185 Added permanent ACPI_REPORT_ERROR macros for all instances of the
11186 ACPI_AML_INTERNAL exception.
11188 Integrated latest version of acfreebsd.h
11190 ----------------------------------------
11191 16 January 2004. Summary of changes for version 20040116:
11193 The purpose of this release is primarily to update the copyright years in
11194 each module, thus causing a huge number of diffs. There are a few small
11195 functional changes, however.
11197 1) ACPI CA Core Subsystem:
11199 Improved error messages when there is a problem finding one or more of
11201 required base ACPI tables
11203 Reintroduced the definition of APIC_HEADER in actbl.h
11205 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
11207 Removed extraneous reference to NewObj in dsmthdat.c
11211 Fixed a problem introduced in December that disabled the correct
11213 of Resource Templates
11216 ----------------------------------------
11217 03 December 2003. Summary of changes for version 20031203:
11219 1) ACPI CA Core Subsystem:
11221 Changed the initialization of Operation Regions during subsystem
11222 init to perform two entire walks of the ACPI namespace; The first
11223 to initialize the regions themselves, the second to execute the
11224 _REG methods. This fixed some interdependencies across _REG
11225 methods found on some machines.
11227 Fixed a problem where a Store(Local0, Local1) could simply update
11228 the object reference count, and not create a new copy of the
11229 object if the Local1 is uninitialized.
11231 Implemented support for the _SST reserved method during sleep
11234 Implemented support to clear the SLP_TYP and SLP_EN bits when
11235 waking up, this is apparently required by some machines.
11237 When sleeping, clear the wake status only if SleepState is not S5.
11239 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
11240 pointer arithmetic advanced a string pointer too far.
11242 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
11243 could be returned if the requested table has not been loaded.
11245 Within the support for IRQ resources, restructured the handling of
11246 the active and edge/level bits.
11248 Fixed a few problems in AcpiPsxExecute() where memory could be
11249 leaked under certain error conditions.
11251 Improved error messages for the cases where the ACPI mode could
11254 Code and Data Size: Current and previous core subsystem library
11255 sizes are shown below. These are the code and data sizes for the
11256 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11257 these values do not include any ACPI driver or OSPM code. The
11258 debug version of the code includes the debug output trace
11259 mechanism and has a much larger code and data size. Note that
11260 these values will vary depending on the efficiency of the compiler
11261 and the compiler options used during generation.
11263 Previous Release (20031029):
11264 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
11265 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
11267 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
11268 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
11270 2) iASL Compiler/Disassembler:
11272 Implemented a fix for the iASL disassembler where a bad index was
11273 generated. This was most noticeable on 64-bit platforms
11276 ----------------------------------------
11277 29 October 2003. Summary of changes for version 20031029:
11279 1) ACPI CA Core Subsystem:
11282 Fixed a problem where a level-triggered GPE with an associated
11283 _Lxx control method was incorrectly cleared twice.
11285 Fixed a problem with the Field support code where an access can
11286 occur beyond the end-of-region if the field is non-aligned but
11287 extends to the very end of the parent region (resulted in an
11288 AE_AML_REGION_LIMIT exception.)
11290 Fixed a problem with ACPI Fixed Events where an RT Clock handler
11291 would not get invoked on an RTC event. The RTC event bitmasks for
11292 the PM1 registers were not being initialized properly.
11294 Implemented support for executing _STA and _INI methods for
11295 Processor objects. Although this is currently not part of the
11296 ACPI specification, there is existing ASL code that depends on the
11297 init-time execution of these methods.
11299 Implemented and deployed a GetDescriptorName function to decode
11300 the various types of internal descriptors. Guards against null
11301 descriptors during debug output also.
11303 Implemented and deployed a GetNodeName function to extract the 4-
11304 character namespace node name. This function simplifies the debug
11305 and error output, as well as guarding against null pointers during
11308 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
11309 simplify the debug and error output of 64-bit integers. This
11310 macro replaces the HIDWORD and LODWORD macros for dumping these
11313 Updated the implementation of the Stall() operator to only call
11314 AcpiOsStall(), and also return an error if the operand is larger
11315 than 255. This preserves the required behavior of not
11316 relinquishing the processor, as would happen if AcpiOsSleep() was
11317 called for "long stalls".
11319 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
11320 initialized are now treated as NOOPs.
11322 Cleaned up a handful of warnings during 64-bit generation.
11324 Fixed a reported error where and incorrect GPE number was passed
11325 to the GPE dispatch handler. This value is only used for error
11326 output, however. Used this opportunity to clean up and streamline
11327 the GPE dispatch code.
11329 Code and Data Size: Current and previous core subsystem library
11330 sizes are shown below. These are the code and data sizes for the
11331 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11332 these values do not include any ACPI driver or OSPM code. The
11334 debug version of the code includes the debug output trace
11335 mechanism and has a much larger code and data size. Note that
11336 these values will vary depending on the efficiency of the compiler
11337 and the compiler options used during generation.
11339 Previous Release (20031002):
11340 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
11341 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
11343 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
11344 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
11347 2) iASL Compiler/Disassembler:
11349 Updated the iASL compiler to return an error if the operand to the
11350 Stall() operator is larger than 255.
11353 ----------------------------------------
11354 02 October 2003. Summary of changes for version 20031002:
11357 1) ACPI CA Core Subsystem:
11359 Fixed a problem with Index Fields where the index was not
11360 incremented for fields that require multiple writes to the
11361 index/data registers (Fields that are wider than the data
11364 Fixed a problem with all Field objects where a write could go
11365 beyond the end-of-field if the field was larger than the access
11366 granularity and therefore required multiple writes to complete the
11367 request. An extra write beyond the end of the field could happen
11370 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
11371 would incorrectly be returned if the width of the Data Register
11372 was larger than the specified field access width.
11374 Completed fixes for LoadTable() and Unload() and verified their
11375 operation. Implemented full support for the "DdbHandle" object
11376 throughout the ACPI CA subsystem.
11378 Implemented full support for the MADT and ECDT tables in the ACPI
11379 CA header files. Even though these tables are not directly
11380 consumed by ACPI CA, the header definitions are useful for ACPI
11383 Integrated resource descriptor fixes posted to the Linux ACPI
11384 list. This included checks for minimum descriptor length, and
11385 support for trailing NULL strings within descriptors that have
11386 optional string elements.
11388 Code and Data Size: Current and previous core subsystem library
11389 sizes are shown below. These are the code and data sizes for the
11390 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11391 these values do not include any ACPI driver or OSPM code. The
11392 debug version of the code includes the debug output trace
11393 mechanism and has a much larger code and data size. Note that
11394 these values will vary depending on the efficiency of the compiler
11395 and the compiler options used during generation.
11397 Previous Release (20030918):
11398 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
11399 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
11401 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
11402 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
11407 Implemented detection of non-ASCII characters within the input
11408 source ASL file. This catches attempts to compile binary (AML)
11409 files early in the compile, with an informative error message.
11411 Fixed a problem where the disassembler would fault if the output
11412 filename could not be generated or if the output file could not be
11415 ----------------------------------------
11416 18 September 2003. Summary of changes for version 20030918:
11419 1) ACPI CA Core Subsystem:
11421 Found and fixed a longstanding problem with the late execution of
11422 the various deferred AML opcodes (such as Operation Regions,
11423 Buffer Fields, Buffers, and Packages). If the name string
11424 specified for the name of the new object placed the object in a
11425 scope other than the current scope, the initialization/execution
11426 of the opcode failed. The solution to this problem was to
11427 implement a mechanism where the late execution of such opcodes
11428 does not attempt to lookup/create the name a second time in an
11429 incorrect scope. This fixes the "region size computed
11430 incorrectly" problem.
11432 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
11433 Global Lock AE_BAD_PARAMETER error.
11435 Fixed several 64-bit issues with prototypes, casting and data
11438 Removed duplicate prototype from acdisasm.h
11440 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
11442 Code and Data Size: Current and previous core subsystem library
11443 sizes are shown below. These are the code and data sizes for the
11444 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11445 these values do not include any ACPI driver or OSPM code. The
11446 debug version of the code includes the debug output trace
11447 mechanism and has a much larger code and data size. Note that
11448 these values will vary depending on the efficiency of the compiler
11449 and the compiler options used during generation.
11453 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
11454 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
11456 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
11457 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
11462 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
11463 correct sleep time in seconds.
11465 ----------------------------------------
11466 14 July 2003. Summary of changes for version 20030619:
11468 1) ACPI CA Core Subsystem:
11470 Parse SSDTs in order discovered, as opposed to reverse order
11473 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
11480 Dynamically allocate SDT list (suggested by Andi Kleen)
11482 proc function return value cleanups (Andi Kleen)
11484 Correctly handle NMI watchdog during long stalls (Andrew Morton)
11486 Make it so acpismp=force works (reported by Andrew Morton)
11489 ----------------------------------------
11490 19 June 2003. Summary of changes for version 20030619:
11492 1) ACPI CA Core Subsystem:
11494 Fix To/FromBCD, eliminating the need for an arch-specific #define.
11496 Do not acquire a semaphore in the S5 shutdown path.
11498 Fix ex_digits_needed for 0. (Takayoshi Kochi)
11500 Fix sleep/stall code reversal. (Andi Kleen)
11502 Revert a change having to do with control method calling
11507 acpiphp update (Takayoshi Kochi)
11509 Export acpi_disabled for sonypi (Stelian Pop)
11511 Mention acpismp=force in config help
11513 Re-add acpitable.c and acpismp=force. This improves backwards
11515 compatibility and also cleans up the code to a significant degree.
11517 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
11519 ----------------------------------------
11520 22 May 2003. Summary of changes for version 20030522:
11522 1) ACPI CA Core Subsystem:
11524 Found and fixed a reported problem where an AE_NOT_FOUND error
11525 occurred occasionally during _BST evaluation. This turned out to
11526 be an Owner ID allocation issue where a called method did not get
11527 a new ID assigned to it. Eventually, (after 64k calls), the Owner
11528 ID UINT16 would wraparound so that the ID would be the same as the
11529 caller's and the called method would delete the caller's
11532 Implemented extended error reporting for control methods that are
11533 aborted due to a run-time exception. Output includes the exact
11534 AML instruction that caused the method abort, a dump of the method
11535 locals and arguments at the time of the abort, and a trace of all
11536 nested control method calls.
11538 Modified the interpreter to allow the creation of buffers of zero
11539 length from the AML code. Implemented new code to ensure that no
11540 attempt is made to actually allocate a memory buffer (of length
11541 zero) - instead, a simple buffer object with a NULL buffer pointer
11542 and length zero is created. A warning is no longer issued when
11543 the AML attempts to create a zero-length buffer.
11545 Implemented a workaround for the "leading asterisk issue" in
11546 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
11547 asterisk is automatically removed if present in any HID, UID, or
11548 CID strings. The iASL compiler will still flag this asterisk as
11551 Implemented full support for _CID methods that return a package of
11552 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
11553 now additionally returns a device _CID list if present. This
11554 required a change to the external interface in order to pass an
11555 ACPI_BUFFER object as a parameter since the _CID list is of
11558 Fixed a problem with the new AE_SAME_HANDLER exception where
11559 handler initialization code did not know about this exception.
11561 Code and Data Size: Current and previous core subsystem library
11562 sizes are shown below. These are the code and data sizes for the
11563 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11564 these values do not include any ACPI driver or OSPM code. The
11565 debug version of the code includes the debug output trace
11566 mechanism and has a much larger code and data size. Note that
11567 these values will vary depending on the efficiency of the compiler
11568 and the compiler options used during generation.
11570 Previous Release (20030509):
11571 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
11572 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
11574 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
11575 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
11580 Fixed a bug in which we would reinitialize the ACPI interrupt
11581 after it was already working, thus disabling all ACPI and the IRQs
11582 for any other device sharing the interrupt. (Thanks to Stian
11585 Toshiba driver update (John Belmonte)
11587 Return only 0 or 1 for our interrupt handler status (Andrew
11593 Fixed a reported problem where multiple (nested) ElseIf()
11594 statements were not handled correctly by the compiler, resulting
11595 in incorrect warnings and incorrect AML code. This was a problem
11596 in both the ASL parser and the code generator.
11601 Added changes to existing interfaces, new exception codes, and new
11602 text concerning reference count object management versus garbage
11605 ----------------------------------------
11606 09 May 2003. Summary of changes for version 20030509.
11609 1) ACPI CA Core Subsystem:
11611 Changed the subsystem initialization sequence to hold off
11612 installation of address space handlers until the hardware has been
11613 initialized and the system has entered ACPI mode. This is because
11614 the installation of space handlers can cause _REG methods to be
11615 run. Previously, the _REG methods could potentially be run before
11616 ACPI mode was enabled.
11618 Fixed some memory leak issues related to address space handler and
11619 notify handler installation. There were some problems with the
11620 reference count mechanism caused by the fact that the handler
11621 objects are shared across several namespace objects.
11623 Fixed a reported problem where reference counts within the
11624 namespace were not properly updated when named objects created by
11625 method execution were deleted.
11627 Fixed a reported problem where multiple SSDTs caused a deletion
11628 issue during subsystem termination. Restructured the table data
11629 structures to simplify the linked lists and the related code.
11631 Fixed a problem where the table ID associated with secondary
11632 tables (SSDTs) was not being propagated into the namespace objects
11633 created by those tables. This would only present a problem for
11634 tables that are unloaded at run-time, however.
11636 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
11637 type as the length parameter (instead of UINT32).
11639 Solved a long-standing problem where an ALREADY_EXISTS error
11640 appears on various systems. This problem could happen when there
11641 are multiple PCI_Config operation regions under a single PCI root
11642 bus. This doesn't happen very frequently, but there are some
11643 systems that do this in the ASL.
11645 Fixed a reported problem where the internal DeleteNode function
11646 was incorrectly handling the case where a namespace node was the
11647 first in the parent's child list, and had additional peers (not
11648 the only child, but first in the list of children.)
11650 Code and Data Size: Current core subsystem library sizes are shown
11651 below. These are the code and data sizes for the acpica.lib
11652 produced by the Microsoft Visual C++ 6.0 compiler, and these
11653 values do not include any ACPI driver or OSPM code. The debug
11654 version of the code includes the debug output trace mechanism and
11655 has a much larger code and data size. Note that these values will
11656 vary depending on the efficiency of the compiler and the compiler
11657 options used during generation.
11660 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
11661 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
11663 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
11664 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
11669 Allow ":" in OS override string (Ducrot Bruno)
11671 Kobject fix (Greg KH)
11674 3 iASL Compiler/Disassembler:
11676 Fixed a problem in the generation of the C source code files (AML
11677 is emitted in C source statements for BIOS inclusion) where the
11678 Ascii dump that appears within a C comment at the end of each line
11679 could cause a compile time error if the AML sequence happens to
11680 have an open comment or close comment sequence embedded.
11683 ----------------------------------------
11684 24 April 2003. Summary of changes for version 20030424.
11687 1) ACPI CA Core Subsystem:
11689 Support for big-endian systems has been implemented. Most of the
11690 support has been invisibly added behind big-endian versions of the
11691 ACPI_MOVE_* macros.
11693 Fixed a problem in AcpiHwDisableGpeBlock() and
11694 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
11695 low level hardware write routine. The offset parameter was
11696 actually eliminated from the low level read/write routines because
11697 they had become obsolete.
11699 Fixed a problem where a handler object was deleted twice during
11700 the removal of a fixed event handler.
11705 A fix for SMP systems with link devices was contributed by
11709 (2.5) Return whether we handled the interrupt in our IRQ handler.
11710 (Linux ISRs no longer return void, so we can propagate the handler
11711 return value from the ACPI CA core back to the OS.)
11717 The ACPI CA Programmer Reference has been updated to reflect new
11718 interfaces and changes to existing interfaces.
11720 ----------------------------------------
11721 28 March 2003. Summary of changes for version 20030328.
11723 1) ACPI CA Core Subsystem:
11725 The GPE Block Device support has been completed. New interfaces
11726 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
11727 interfaces (enable, disable, clear, getstatus) have been split
11728 into separate interfaces for Fixed Events and General Purpose
11729 Events (GPEs) in order to support GPE Block Devices properly.
11731 Fixed a problem where the error message "Failed to acquire
11732 semaphore" would appear during operations on the embedded
11735 Code and Data Size: Current core subsystem library sizes are shown
11736 below. These are the code and data sizes for the acpica.lib
11737 produced by the Microsoft Visual C++ 6.0 compiler, and these
11738 values do not include any ACPI driver or OSPM code. The debug
11739 version of the code includes the debug output trace mechanism and
11740 has a much larger code and data size. Note that these values will
11741 vary depending on the efficiency of the compiler and the compiler
11742 options used during generation.
11745 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
11746 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
11748 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
11749 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
11752 ----------------------------------------
11753 28 February 2003. Summary of changes for version 20030228.
11756 1) ACPI CA Core Subsystem:
11758 The GPE handling and dispatch code has been completely overhauled
11759 in preparation for support of GPE Block Devices (ID ACPI0006).
11760 This affects internal data structures and code only; there should
11761 be no differences visible externally. One new file has been
11764 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
11765 fields that are used to determine the GPE block lengths. The
11766 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
11767 structures are ignored. This is per the ACPI specification but it
11768 isn't very clear. The full 256 Block 0/1 GPEs are now supported
11769 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
11771 In the SCI interrupt handler, removed the read of the PM1_CONTROL
11772 register to look at the SCI_EN bit. On some machines, this read
11773 causes an SMI event and greatly slows down SCI events. (This may
11774 in fact be the cause of slow battery status response on some
11777 Fixed a problem where a store of a NULL string to a package object
11778 could cause the premature deletion of the object. This was seen
11779 during execution of the battery _BIF method on some systems,
11780 resulting in no battery data being returned.
11782 Added AcpiWalkResources interface to simplify parsing of resource
11785 Code and Data Size: Current core subsystem library sizes are shown
11786 below. These are the code and data sizes for the acpica.lib
11787 produced by the Microsoft Visual C++ 6.0 compiler, and these
11788 values do not include any ACPI driver or OSPM code. The debug
11789 version of the code includes the debug output trace mechanism and
11790 has a much larger code and data size. Note that these values will
11791 vary depending on the efficiency of the compiler and the compiler
11792 options used during generation.
11795 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11796 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11798 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
11799 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
11804 S3 fixes (Ole Rohne)
11806 Update ACPI PHP driver with to use new acpi_walk_resource API
11809 Add S4BIOS support (Pavel Machek)
11811 Map in entire table before performing checksum (John Stultz)
11813 Expand the mem= cmdline to allow the specification of reserved and
11814 ACPI DATA blocks (Pavel Machek)
11816 Never use ACPI on VISWS
11818 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
11820 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
11821 causing us to think that some systems support C2 when they really
11824 Do not count processor objects for non-present CPUs (Thanks to
11830 Fixed a problem where ASL include files could not be found and
11833 Added support for the _PDC reserved name.
11836 ----------------------------------------
11837 22 January 2003. Summary of changes for version 20030122.
11840 1) ACPI CA Core Subsystem:
11842 Added a check for constructs of the form: Store (Local0, Local0)
11843 where Local0 is not initialized. Apparently, some BIOS
11844 programmers believe that this is a NOOP. Since this store doesn't
11845 do anything anyway, the new prototype behavior will ignore this
11846 error. This is a case where we can relax the strict checking in
11847 the interpreter in the name of compatibility.
11852 The AcpiSrc Source Conversion Utility has been released with the
11853 Linux package for the first time. This is the utility that is
11854 used to convert the ACPI CA base source code to the Linux version.
11856 (Both) Handle P_BLK lengths shorter than 6 more gracefully
11858 (Both) Move more headers to include/acpi, and delete an unused
11861 (Both) Move drivers/acpi/include directory to include/acpi
11863 (Both) Boot functions don't use cmdline, so don't pass it around
11865 (Both) Remove include of unused header (Adrian Bunk)
11867 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
11869 former now also includes the latter, acpiphp.h only needs the one,
11872 (2.5) Make it possible to select method of bios restoring after S3
11873 resume. [=> no more ugly ifdefs] (Pavel Machek)
11875 (2.5) Make proc write interfaces work (Pavel Machek)
11877 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
11879 (2.5) Break out ACPI Perf code into its own module, under cpufreq
11880 (Dominik Brodowski)
11882 (2.4) S4BIOS support (Ducrot Bruno)
11884 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
11890 Added support to disassemble SSDT and PSDTs.
11892 Implemented support to obtain SSDTs from the Windows registry if
11896 ----------------------------------------
11897 09 January 2003. Summary of changes for version 20030109.
11899 1) ACPI CA Core Subsystem:
11901 Changed the behavior of the internal Buffer-to-String conversion
11902 function. The current ACPI specification states that the contents
11903 of the buffer are "converted to a string of two-character
11904 hexadecimal numbers, each separated by a space". Unfortunately,
11905 this definition is not backwards compatible with existing ACPI 1.0
11906 implementations (although the behavior was not defined in the ACPI
11907 1.0 specification). The new behavior simply copies data from the
11908 buffer to the string until a null character is found or the end of
11909 the buffer is reached. The new String object is always null
11910 terminated. This problem was seen during the generation of _BIF
11911 battery data where incorrect strings were returned for battery
11912 type, etc. This will also require an errata to the ACPI
11915 Renamed all instances of NATIVE_UINT and NATIVE_INT to
11916 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
11918 Copyright in all module headers (both Linux and non-Linux) has be
11921 Code and Data Size: Current core subsystem library sizes are shown
11922 below. These are the code and data sizes for the acpica.lib
11923 produced by the Microsoft Visual C++ 6.0 compiler, and these
11924 values do not include any ACPI driver or OSPM code. The debug
11925 version of the code includes the debug output trace mechanism and
11926 has a much larger code and data size. Note that these values will
11927 vary depending on the efficiency of the compiler and the compiler
11928 options used during generation.
11931 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11932 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11934 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11935 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11940 Fixed an oops on module insertion/removal (Matthew Tippett)
11942 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
11944 (2.5) Replace pr_debug (Randy Dunlap)
11946 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
11948 (Both) Eliminate spawning of thread from timer callback, in favor
11951 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
11953 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
11955 (Both) Add missing statics to button.c (Pavel Machek)
11957 Several changes have been made to the source code translation
11958 utility that generates the Linux Code in order to make the code
11961 All typedefs on structs and unions have been removed in keeping
11962 with the Linux coding style.
11964 Removed the non-Linux SourceSafe module revision number from each
11967 Completed major overhaul of symbols to be lowercased for linux.
11968 Doubled the number of symbols that are lowercased.
11970 Fixed a problem where identifiers within procedure headers and
11971 within quotes were not fully lower cased (they were left with a
11974 Some C macros whose only purpose is to allow the generation of 16-
11975 bit code are now completely removed in the Linux code, increasing
11976 readability and maintainability.
11978 ----------------------------------------
11980 12 December 2002. Summary of changes for version 20021212.
11983 1) ACPI CA Core Subsystem:
11985 Fixed a problem where the creation of a zero-length AML Buffer
11986 would cause a fault.
11988 Fixed a problem where a Buffer object that pointed to a static AML
11989 buffer (in an ACPI table) could inadvertently be deleted, causing
11992 Fixed a problem where a user buffer (passed in to the external
11993 ACPI CA interfaces) could be overwritten if the buffer was too
11994 small to complete the operation, causing memory corruption.
11996 Fixed a problem in the Buffer-to-String conversion code where a
11997 string of length one was always returned, regardless of the size
11998 of the input Buffer object.
12000 Removed the NATIVE_CHAR data type across the entire source due to
12001 lack of need and lack of consistent use.
12003 Code and Data Size: Current core subsystem library sizes are shown
12004 below. These are the code and data sizes for the acpica.lib
12005 produced by the Microsoft Visual C++ 6.0 compiler, and these
12006 values do not include any ACPI driver or OSPM code. The debug
12007 version of the code includes the debug output trace mechanism and
12008 has a much larger code and data size. Note that these values will
12009 vary depending on the efficiency of the compiler and the compiler
12010 options used during generation.
12013 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
12014 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
12016 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
12017 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
12020 ----------------------------------------
12021 05 December 2002. Summary of changes for version 20021205.
12023 1) ACPI CA Core Subsystem:
12025 Fixed a problem where a store to a String or Buffer object could
12026 cause corruption of the DSDT if the object type being stored was
12027 the same as the target object type and the length of the object
12028 being stored was equal to or smaller than the original (existing)
12029 target object. This was seen to cause corruption of battery _BIF
12030 buffers if the _BIF method modified the buffer on the fly.
12032 Fixed a problem where an internal error was generated if a control
12033 method invocation was used in an OperationRegion, Buffer, or
12034 Package declaration. This was caused by the deferred parsing of
12035 the control method and thus the deferred creation of the internal
12036 method object. The solution to this problem was to create the
12037 internal method object at the moment the method is encountered in
12038 the first pass - so that subsequent references to the method will
12039 able to obtain the required parameter count and thus properly
12040 parse the method invocation. This problem presented itself as an
12041 AE_AML_INTERNAL during the pass 1 parse phase during table load.
12043 Fixed a problem where the internal String object copy routine did
12044 not always allocate sufficient memory for the target String object
12045 and caused memory corruption. This problem was seen to cause
12046 "Allocation already present in list!" errors as memory allocation
12049 Implemented a new function for the evaluation of namespace objects
12050 that allows the specification of the allowable return object
12051 types. This simplifies a lot of code that checks for a return
12052 object of one or more specific objects returned from the
12053 evaluation (such as _STA, etc.) This may become and external
12054 function if it would be useful to ACPI-related drivers.
12056 Completed another round of prefixing #defines with "ACPI_" for
12059 Completed additional code restructuring to allow more modular
12060 linking for iASL compiler and AcpiExec. Several files were split
12061 creating new files. New files: nsparse.c dsinit.c evgpe.c
12063 Implemented an abort mechanism to terminate an executing control
12064 method via the AML debugger. This feature is useful for debugging
12065 control methods that depend (wait) for specific hardware
12068 Code and Data Size: Current core subsystem library sizes are shown
12069 below. These are the code and data sizes for the acpica.lib
12070 produced by the Microsoft Visual C++ 6.0 compiler, and these
12071 values do not include any ACPI driver or OSPM code. The debug
12072 version of the code includes the debug output trace mechanism and
12073 has a much larger code and data size. Note that these values will
12074 vary depending on the efficiency of the compiler and the compiler
12075 options used during generation.
12078 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12079 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
12081 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
12082 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
12085 2) iASL Compiler/Disassembler
12087 Fixed a compiler code generation problem for "Interrupt" Resource
12088 Descriptors. If specified in the ASL, the optional "Resource
12089 Source Index" and "Resource Source" fields were not inserted into
12090 the correct location within the AML resource descriptor, creating
12091 an invalid descriptor.
12093 Fixed a disassembler problem for "Interrupt" resource descriptors.
12094 The optional "Resource Source Index" and "Resource Source" fields
12098 ----------------------------------------
12099 22 November 2002. Summary of changes for version 20021122.
12102 1) ACPI CA Core Subsystem:
12104 Fixed a reported problem where an object stored to a Method Local
12105 or Arg was not copied to a new object during the store - the
12106 object pointer was simply copied to the Local/Arg. This caused
12107 all subsequent operations on the Local/Arg to also affect the
12108 original source of the store operation.
12110 Fixed a problem where a store operation to a Method Local or Arg
12111 was not completed properly if the Local/Arg contained a reference
12112 (from RefOf) to a named field. The general-purpose store-to-
12113 namespace-node code is now used so that this case is handled
12116 Fixed a problem where the internal object copy routine would cause
12117 a protection fault if the object being copied was a Package and
12118 contained either 1) a NULL package element or 2) a nested sub-
12121 Fixed a problem with the GPE initialization that resulted from an
12122 ambiguity in the ACPI specification. One section of the
12123 specification states that both the address and length of the GPE
12124 block must be zero if the block is not supported. Another section
12125 implies that only the address need be zero if the block is not
12126 supported. The code has been changed so that both the address and
12127 the length must be non-zero to indicate a valid GPE block (i.e.,
12128 if either the address or the length is zero, the GPE block is
12131 Code and Data Size: Current core subsystem library sizes are shown
12132 below. These are the code and data sizes for the acpica.lib
12133 produced by the Microsoft Visual C++ 6.0 compiler, and these
12134 values do not include any ACPI driver or OSPM code. The debug
12135 version of the code includes the debug output trace mechanism and
12136 has a much larger code and data size. Note that these values will
12137 vary depending on the efficiency of the compiler and the compiler
12138 options used during generation.
12141 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
12142 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
12144 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12145 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
12150 Cleaned up EC driver. Exported an external EC read/write
12151 interface. By going through this, other drivers (most notably
12152 sonypi) will be able to serialize access to the EC.
12155 3) iASL Compiler/Disassembler
12157 Implemented support to optionally generate include files for both
12158 ASM and C (the -i switch). This simplifies BIOS development by
12159 automatically creating include files that contain external
12160 declarations for the symbols that are created within the
12162 (optionally generated) ASM and C AML source files.
12165 ----------------------------------------
12166 15 November 2002. Summary of changes for version 20021115.
12168 1) ACPI CA Core Subsystem:
12170 Fixed a memory leak problem where an error during resolution of
12172 method arguments during a method invocation from another method
12173 failed to cleanup properly by deleting all successfully resolved
12176 Fixed a problem where the target of the Index() operator was not
12177 correctly constructed if the source object was a package. This
12178 problem has not been detected because the use of a target operand
12179 with Index() is very rare.
12181 Fixed a problem with the Index() operator where an attempt was
12182 made to delete the operand objects twice.
12184 Fixed a problem where an attempt was made to delete an operand
12185 twice during execution of the CondRefOf() operator if the target
12188 Implemented the first of perhaps several internal create object
12189 functions that create and initialize a specific object type. This
12190 consolidates duplicated code wherever the object is created, thus
12191 shrinking the size of the subsystem.
12193 Implemented improved debug/error messages for errors that occur
12194 during nested method invocations. All executing method pathnames
12195 are displayed (with the error) as the call stack is unwound - thus
12198 Fixed a problem introduced in the 10/02 release that caused
12199 premature deletion of a buffer object if a buffer was used as an
12200 ASL operand where an integer operand is required (Thus causing an
12201 implicit object conversion from Buffer to Integer.) The change in
12202 the 10/02 release was attempting to fix a memory leak (albeit
12205 Code and Data Size: Current core subsystem library sizes are shown
12206 below. These are the code and data sizes for the acpica.lib
12207 produced by the Microsoft Visual C++ 6.0 compiler, and these
12208 values do not include any ACPI driver or OSPM code. The debug
12209 version of the code includes the debug output trace mechanism and
12210 has a much larger code and data size. Note that these values will
12211 vary depending on the efficiency of the compiler and the compiler
12212 options used during generation.
12215 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
12216 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
12218 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
12219 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
12224 Changed the implementation of the ACPI semaphores to use down()
12225 instead of down_interruptable(). It is important that the
12226 execution of ACPI control methods not be interrupted by signals.
12227 Methods must run to completion, or the system may be left in an
12228 unknown/unstable state.
12230 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
12234 3) iASL Compiler/Disassembler
12237 Changed the default location of output files. All output files
12238 are now placed in the current directory by default instead of in
12239 the directory of the source file. This change may affect some
12240 existing makefiles, but it brings the behavior of the compiler in
12241 line with other similar tools. The location of the output files
12242 can be overridden with the -p command line switch.
12245 ----------------------------------------
12246 11 November 2002. Summary of changes for version 20021111.
12249 0) ACPI Specification 2.0B is released and is now available at:
12250 http://www.acpi.info/index.html
12253 1) ACPI CA Core Subsystem:
12255 Implemented support for the ACPI 2.0 SMBus Operation Regions.
12256 This includes the early detection and handoff of the request to
12257 the SMBus region handler (avoiding all of the complex field
12258 support code), and support for the bidirectional return packet
12259 from an SMBus write operation. This paves the way for the
12260 development of SMBus drivers in each host operating system.
12262 Fixed a problem where the semaphore WAIT_FOREVER constant was
12263 defined as 32 bits, but must be 16 bits according to the ACPI
12264 specification. This had the side effect of causing ASL
12265 Mutex/Event timeouts even though the ASL code requested a wait
12266 forever. Changed all internal references to the ACPI timeout
12267 parameter to 16 bits to prevent future problems. Changed the name
12268 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
12270 Code and Data Size: Current core subsystem library sizes are shown
12271 below. These are the code and data sizes for the acpica.lib
12272 produced by the Microsoft Visual C++ 6.0 compiler, and these
12273 values do not include any ACPI driver or OSPM code. The debug
12274 version of the code includes the debug output trace mechanism and
12275 has a much larger code and data size. Note that these values will
12276 vary depending on the efficiency of the compiler and the compiler
12277 options used during generation.
12280 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12281 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
12283 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
12284 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
12289 Module loading/unloading fixes (John Cagle)
12292 3) iASL Compiler/Disassembler
12294 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
12296 Implemented support for the disassembly of all SMBus protocol
12297 keywords (SMBQuick, SMBWord, etc.)
12299 ----------------------------------------
12300 01 November 2002. Summary of changes for version 20021101.
12303 1) ACPI CA Core Subsystem:
12305 Fixed a problem where platforms that have a GPE1 block but no GPE0
12306 block were not handled correctly. This resulted in a "GPE
12307 overlap" error message. GPE0 is no longer required.
12309 Removed code added in the previous release that inserted nodes
12310 into the namespace in alphabetical order. This caused some side-
12311 effects on various machines. The root cause of the problem is
12312 still under investigation since in theory, the internal ordering
12313 of the namespace nodes should not matter.
12316 Enhanced error reporting for the case where a named object is not
12317 found during control method execution. The full ACPI namepath
12318 (name reference) of the object that was not found is displayed in
12321 Note: as a result of the overhaul of the namespace object types in
12322 the previous release, the namespace nodes for the predefined
12323 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
12324 instead of ACPI_TYPE_ANY. This simplifies the namespace
12325 management code but may affect code that walks the namespace tree
12326 looking for specific object types.
12328 Code and Data Size: Current core subsystem library sizes are shown
12329 below. These are the code and data sizes for the acpica.lib
12330 produced by the Microsoft Visual C++ 6.0 compiler, and these
12331 values do not include any ACPI driver or OSPM code. The debug
12332 version of the code includes the debug output trace mechanism and
12333 has a much larger code and data size. Note that these values will
12334 vary depending on the efficiency of the compiler and the compiler
12335 options used during generation.
12338 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
12339 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
12341 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12342 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
12347 Fixed a problem introduced in the previous release where the
12348 Processor and Thermal objects were not recognized and installed in
12349 /proc. This was related to the scope type change described above.
12352 3) iASL Compiler/Disassembler
12354 Implemented the -g option to get all of the required ACPI tables
12355 from the registry and save them to files (Windows version of the
12356 compiler only.) The required tables are the FADT, FACS, and DSDT.
12358 Added ACPI table checksum validation during table disassembly in
12359 order to catch corrupted tables.
12362 ----------------------------------------
12363 22 October 2002. Summary of changes for version 20021022.
12365 1) ACPI CA Core Subsystem:
12367 Implemented a restriction on the Scope operator that the target
12368 must already exist in the namespace at the time the operator is
12369 encountered (during table load or method execution). In other
12370 words, forward references are not allowed and Scope() cannot
12371 create a new object. This changes the previous behavior where the
12372 interpreter would create the name if not found. This new behavior
12373 correctly enables the search-to-root algorithm during namespace
12374 lookup of the target name. Because of this upsearch, this fixes
12375 the known Compaq _SB_.OKEC problem and makes both the AML
12376 interpreter and iASL compiler compatible with other ACPI
12379 Completed a major overhaul of the internal ACPI object types for
12380 the ACPI Namespace and the associated operand objects. Many of
12381 these types had become obsolete with the introduction of the two-
12382 pass namespace load. This cleanup simplifies the code and makes
12383 the entire namespace load mechanism much clearer and easier to
12386 Improved debug output for tracking scope opening/closing to help
12387 diagnose scoping issues. The old scope name as well as the new
12388 scope name are displayed. Also improved error messages for
12389 problems with ASL Mutex objects and error messages for GPE
12392 Cleaned up the namespace dump code, removed obsolete code.
12394 All string output (for all namespace/object dumps) now uses the
12395 common ACPI string output procedure which handles escapes properly
12396 and does not emit non-printable characters.
12398 Fixed some issues with constants in the 64-bit version of the
12399 local C library (utclib.c)
12404 EC Driver: No longer attempts to acquire the Global Lock at
12408 3) iASL Compiler/Disassembler
12410 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
12411 2 opcodes outside of a control method. This means that the
12412 "executable" operators (versus the "namespace" operators) cannot
12413 be used at the table level; they can only be used within a control
12416 Implemented the restriction on the Scope() operator where the
12417 target must already exist in the namespace at the time the
12418 operator is encountered (during ASL compilation). In other words,
12419 forward references are not allowed and Scope() cannot create a new
12420 object. This makes the iASL compiler compatible with other ACPI
12421 implementations and makes the Scope() implementation adhere to the
12422 ACPI specification.
12424 Fixed a problem where namepath optimization for the Alias operator
12425 was optimizing the wrong path (of the two namepaths.) This caused
12426 a "Missing alias link" error message.
12428 Fixed a problem where an "unknown reserved name" warning could be
12429 incorrectly generated for names like "_SB" when the trailing
12430 underscore is not used in the original ASL.
12432 Fixed a problem where the reserved name check did not handle
12433 NamePaths with multiple NameSegs correctly. The first nameseg of
12434 the NamePath was examined instead of the last NameSeg.
12437 ----------------------------------------
12439 02 October 2002. Summary of changes for this release.
12442 1) ACPI CA Core Subsystem version 20021002:
12444 Fixed a problem where a store/copy of a string to an existing
12445 string did not always set the string length properly in the String
12448 Fixed a reported problem with the ToString operator where the
12449 behavior was identical to the ToHexString operator instead of just
12450 simply converting a raw buffer to a string data type.
12452 Fixed a problem where CopyObject and the other "explicit"
12453 conversion operators were not updating the internal namespace node
12454 type as part of the store operation.
12456 Fixed a memory leak during implicit source operand conversion
12457 where the original object was not deleted if it was converted to a
12458 new object of a different type.
12460 Enhanced error messages for all problems associated with namespace
12461 lookups. Common procedure generates and prints the lookup name as
12462 well as the formatted status.
12464 Completed implementation of a new design for the Alias support
12465 within the namespace. The existing design did not handle the case
12466 where a new object was assigned to one of the two names due to the
12467 use of an explicit conversion operator, resulting in the two names
12468 pointing to two different objects. The new design simply points
12469 the Alias name to the original name node - not to the object.
12470 This results in a level of indirection that must be handled in the
12471 name resolution mechanism.
12473 Code and Data Size: Current core subsystem library sizes are shown
12474 below. These are the code and data sizes for the acpica.lib
12475 produced by the Microsoft Visual C++ 6.0 compiler, and these
12476 values do not include any ACPI driver or OSPM code. The debug
12477 version of the code includes the debug output trace mechanism and
12478 has a larger code and data size. Note that these values will vary
12479 depending on the efficiency of the compiler and the compiler
12480 options used during generation.
12483 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
12484 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
12486 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
12487 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
12492 Initialize thermal driver's timer before it is used. (Knut
12495 Allow handling negative celsius values. (Kochi Takayoshi)
12497 Fix thermal management and make trip points. R/W (Pavel Machek)
12499 Fix /proc/acpi/sleep. (P. Christeas)
12501 IA64 fixes. (David Mosberger)
12503 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
12505 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
12509 3) iASL Compiler/Disassembler
12511 Clarified some warning/error messages.
12514 ----------------------------------------
12515 18 September 2002. Summary of changes for this release.
12518 1) ACPI CA Core Subsystem version 20020918:
12520 Fixed a reported problem with reference chaining (via the Index()
12521 and RefOf() operators) in the ObjectType() and SizeOf() operators.
12522 The definition of these operators includes the dereferencing of
12523 all chained references to return information on the base object.
12525 Fixed a problem with stores to indexed package elements - the
12526 existing code would not complete the store if an "implicit
12527 conversion" was not performed. In other words, if the existing
12528 object (package element) was to be replaced completely, the code
12529 didn't handle this case.
12531 Relaxed typechecking on the ASL "Scope" operator to allow the
12532 target name to refer to an object of type Integer, String, or
12533 Buffer, in addition to the scoping object types (Device,
12534 predefined Scopes, Processor, PowerResource, and ThermalZone.)
12535 This allows existing AML code that has workarounds for a bug in
12536 Windows to function properly. A warning is issued, however. This
12537 affects both the AML interpreter and the iASL compiler. Below is
12538 an example of this type of ASL code:
12544 Fixed some reported problems with 64-bit integer support in the
12545 local implementation of C library functions (clib.c)
12550 Use ACPI fix map region instead of IOAPIC region, since it is
12551 undefined in non-SMP.
12553 Ensure that the SCI has the proper polarity and trigger, even on
12554 systems that do not have an interrupt override entry in the MADT.
12556 2.5 big driver reorganization (Pat Mochel)
12558 Use early table mapping code from acpitable.c (Andi Kleen)
12560 New blacklist entries (Andi Kleen)
12562 Blacklist improvements. Split blacklist code out into a separate
12563 file. Move checking the blacklist to very early. Previously, we
12564 would use ACPI tables, and then halfway through init, check the
12565 blacklist -- too late. Now, it's early enough to completely fall-
12569 3) iASL Compiler/Disassembler version 20020918:
12571 Fixed a problem where the typechecking code didn't know that an
12572 alias could point to a method. In other words, aliases were not
12573 being dereferenced during typechecking.
12576 ----------------------------------------
12577 29 August 2002. Summary of changes for this release.
12579 1) ACPI CA Core Subsystem Version 20020829:
12581 If the target of a Scope() operator already exists, it must be an
12582 object type that actually opens a scope -- such as a Device,
12583 Method, Scope, etc. This is a fatal runtime error. Similar error
12584 check has been added to the iASL compiler also.
12586 Tightened up the namespace load to disallow multiple names in the
12587 same scope. This previously was allowed if both objects were of
12588 the same type. (i.e., a lookup was the same as entering a new
12594 Ensure that the ACPI interrupt has the proper trigger and
12597 local_irq_disable is extraneous. (Matthew Wilcox)
12599 Make "acpi=off" actually do what it says, and not use the ACPI
12600 interpreter *or* the tables.
12602 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
12606 3) iASL Compiler/Disassembler Version 20020829:
12608 Implemented namepath optimization for name declarations. For
12609 example, a declaration like "Method (\_SB_.ABCD)" would get
12610 optimized to "Method (ABCD)" if the declaration is within the
12611 \_SB_ scope. This optimization is in addition to the named
12612 reference path optimization first released in the previous
12613 version. This would seem to complete all possible optimizations
12614 for namepaths within the ASL/AML.
12616 If the target of a Scope() operator already exists, it must be an
12617 object type that actually opens a scope -- such as a Device,
12618 Method, Scope, etc.
12620 Implemented a check and warning for unreachable code in the same
12621 block below a Return() statement.
12623 Fixed a problem where the listing file was not generated if the
12624 compiler aborted if the maximum error count was exceeded (200).
12626 Fixed a problem where the typechecking of method return values was
12627 broken. This includes the check for a return value when the
12628 method is invoked as a TermArg (a return value is expected.)
12630 Fixed a reported problem where EOF conditions during a quoted
12631 string or comment caused a fault.
12634 ----------------------------------------
12635 15 August 2002. Summary of changes for this release.
12637 1) ACPI CA Core Subsystem Version 20020815:
12639 Fixed a reported problem where a Store to a method argument that
12640 contains a reference did not perform the indirect store correctly.
12641 This problem was created during the conversion to the new
12642 reference object model - the indirect store to a method argument
12643 code was not updated to reflect the new model.
12645 Reworked the ACPI mode change code to better conform to ACPI 2.0,
12646 handle corner cases, and improve code legibility (Kochi Takayoshi)
12648 Fixed a problem with the pathname parsing for the carat (^)
12649 prefix. The heavy use of the carat operator by the new namepath
12650 optimization in the iASL compiler uncovered a problem with the AML
12651 interpreter handling of this prefix. In the case where one or
12652 more carats precede a single nameseg, the nameseg was treated as
12653 standalone and the search rule (to root) was inadvertently
12654 applied. This could cause both the iASL compiler and the
12655 interpreter to find the wrong object or to miss the error that
12656 should occur if the object does not exist at that exact pathname.
12658 Found and fixed the problem where the HP Pavilion DSDT would not
12659 load. This was a relatively minor tweak to the table loading code
12660 (a problem caused by the unexpected encounter with a method
12661 invocation not within a control method), but it does not solve the
12662 overall issue of the execution of AML code at the table level.
12663 This investigation is still ongoing.
12665 Code and Data Size: Current core subsystem library sizes are shown
12666 below. These are the code and data sizes for the acpica.lib
12667 produced by the Microsoft Visual C++ 6.0 compiler, and these
12668 values do not include any ACPI driver or OSPM code. The debug
12669 version of the code includes the debug output trace mechanism and
12670 has a larger code and data size. Note that these values will vary
12671 depending on the efficiency of the compiler and the compiler
12672 options used during generation.
12675 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
12676 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
12678 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
12679 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
12684 Remove redundant slab.h include (Brad Hards)
12686 Fix several bugs in thermal.c (Herbert Nachtnebel)
12688 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
12690 Change acpi_system_suspend to use updated irq functions (Pavel
12693 Export acpi_get_firmware_table (Matthew Wilcox)
12695 Use proper root proc entry for ACPI (Kochi Takayoshi)
12697 Fix early-boot table parsing (Bjorn Helgaas)
12700 3) iASL Compiler/Disassembler
12702 Reworked the compiler options to make them more consistent and to
12703 use two-letter options where appropriate. We were running out of
12704 sensible letters. This may break some makefiles, so check the
12705 current options list by invoking the compiler with no parameters.
12707 Completed the design and implementation of the ASL namepath
12708 optimization option for the compiler. This option optimizes all
12709 references to named objects to the shortest possible path. The
12710 first attempt tries to utilize a single nameseg (4 characters) and
12711 the "search-to-root" algorithm used by the interpreter. If that
12712 cannot be used (because either the name is not in the search path
12713 or there is a conflict with another object with the same name),
12714 the pathname is optimized using the carat prefix (usually a
12715 shorter string than specifying the entire path from the root.)
12717 Implemented support to obtain the DSDT from the Windows registry
12718 (when the disassembly option is specified with no input file).
12719 Added this code as the implementation for AcpiOsTableOverride in
12720 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
12721 utility) to scan memory for the DSDT to the AcpiOsTableOverride
12722 function in the DOS OSL to make the disassembler truly OS
12725 Implemented a new option to disassemble and compile in one step.
12726 When used without an input filename, this option will grab the
12727 DSDT from the local machine, disassemble it, and compile it in one
12730 Added a warning message for invalid escapes (a backslash followed
12731 by any character other than the allowable escapes). This catches
12732 the quoted string error "\_SB_" (which should be "\\_SB_" ).
12734 Also, there are numerous instances in the ACPI specification where
12737 Added a compiler option to disable all optimizations. This is
12738 basically the "compatibility mode" because by using this option,
12739 the AML code will come out exactly the same as other ASL
12742 Added error messages for incorrectly ordered dependent resource
12743 functions. This includes: missing EndDependentFn macro at end of
12744 dependent resource list, nested dependent function macros (both
12745 start and end), and missing StartDependentFn macro. These are
12746 common errors that should be caught at compile time.
12748 Implemented _OSI support for the disassembler and compiler. _OSI
12749 must be included in the namespace for proper disassembly (because
12750 the disassembler must know the number of arguments.)
12752 Added an "optimization" message type that is optional (off by
12753 default). This message is used for all optimizations - including
12754 constant folding, integer optimization, and namepath optimization.
12756 ----------------------------------------
12757 25 July 2002. Summary of changes for this release.
12760 1) ACPI CA Core Subsystem Version 20020725:
12762 The AML Disassembler has been enhanced to produce compilable ASL
12763 code and has been integrated into the iASL compiler (see below) as
12764 well as the single-step disassembly for the AML debugger and the
12765 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
12766 resource templates and macros are fully supported. The
12767 disassembler has been tested on over 30 different AML files,
12768 producing identical AML when the resulting disassembled ASL file
12769 is recompiled with the same ASL compiler.
12771 Modified the Resource Manager to allow zero interrupts and zero
12772 dma channels during the GetCurrentResources call. This was
12773 causing problems on some platforms.
12775 Added the AcpiOsRedirectOutput interface to the OSL to simplify
12776 output redirection for the AcpiOsPrintf and AcpiOsVprintf
12779 Code and Data Size: Current core subsystem library sizes are shown
12780 below. These are the code and data sizes for the acpica.lib
12781 produced by the Microsoft Visual C++ 6.0 compiler, and these
12782 values do not include any ACPI driver or OSPM code. The debug
12783 version of the code includes the debug output trace mechanism and
12784 has a larger code and data size. Note that these values will vary
12785 depending on the efficiency of the compiler and the compiler
12786 options used during generation.
12789 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
12790 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
12792 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
12793 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
12798 Fixed a panic in the EC driver (Dominik Brodowski)
12800 Implemented checksum of the R/XSDT itself during Linux table scan
12806 The AML disassembler is integrated into the compiler. The "-d"
12807 option invokes the disassembler to completely disassemble an
12808 input AML file, producing as output a text ASL file with the
12809 extension ".dsl" (to avoid name collisions with existing .asl
12810 source files.) A future enhancement will allow the disassembler
12811 to obtain the BIOS DSDT from the registry under Windows.
12813 Fixed a problem with the VendorShort and VendorLong resource
12814 descriptors where an invalid AML sequence was created.
12816 Implemented a fix for BufferData term in the ASL parser. It was
12817 inadvertently defined twice, allowing invalid syntax to pass and
12818 causing reduction conflicts.
12820 Fixed a problem where the Ones opcode could get converted to a
12821 value of zero if "Ones" was used where a byte, word or dword value
12822 was expected. The 64-bit value is now truncated to the correct
12823 size with the correct value.
12827 ----------------------------------------
12828 02 July 2002. Summary of changes for this release.
12831 1) ACPI CA Core Subsystem Version 20020702:
12833 The Table Manager code has been restructured to add several new
12834 features. Tables that are not required by the core subsystem
12835 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
12836 validated in any way and are returned from AcpiGetFirmwareTable if
12837 requested. The AcpiOsTableOverride interface is now called for
12838 each table that is loaded by the subsystem in order to allow the
12839 host to override any table it chooses. Previously, only the DSDT
12840 could be overridden. Added one new files, tbrsdt.c and
12843 Fixed a problem with the conversion of internal package objects to
12844 external objects (when a package is returned from a control
12845 method.) The return buffer length was set to zero instead of the
12846 proper length of the package object.
12848 Fixed a reported problem with the use of the RefOf and DeRefOf
12849 operators when passing reference arguments to control methods. A
12850 new type of Reference object is used internally for references
12851 produced by the RefOf operator.
12853 Added additional error messages in the Resource Manager to explain
12854 AE_BAD_DATA errors when they occur during resource parsing.
12856 Split the AcpiEnableSubsystem into two primitives to enable a
12857 finer granularity initialization sequence. These two calls should
12858 be called in this order: AcpiEnableSubsystem (flags),
12859 AcpiInitializeObjects (flags). The flags parameter remains the
12865 Updated the ACPI utilities module to understand the new style of
12866 fully resolved package objects that are now returned from the core
12867 subsystem. This eliminates errors of the form:
12869 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
12870 acpi_utils-0430 [145] acpi_evaluate_reference:
12871 Invalid element in package (not a device reference)
12873 The method evaluation utility uses the new buffer allocation
12874 scheme instead of calling AcpiEvaluate Object twice.
12876 Added support for ECDT. This allows the use of the Embedded
12878 Controller before the namespace has been fully initialized, which
12879 is necessary for ACPI 2.0 support, and for some laptops to
12880 initialize properly. (Laptops using ECDT are still rare, so only
12881 limited testing was performed of the added functionality.)
12883 Fixed memory leaks in the EC driver.
12885 Eliminated a brittle code structure in acpi_bus_init().
12887 Eliminated the acpi_evaluate() helper function in utils.c. It is
12888 no longer needed since acpi_evaluate_object can optionally
12889 allocate memory for the return object.
12891 Implemented fix for keyboard hang when getting battery readings on
12892 some systems (Stephen White)
12894 PCI IRQ routing update (Dominik Brodowski)
12896 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
12899 ----------------------------------------
12900 11 June 2002. Summary of changes for this release.
12903 1) ACPI CA Core Subsystem Version 20020611:
12905 Fixed a reported problem where constants such as Zero and One
12906 appearing within _PRT packages were not handled correctly within
12907 the resource manager code. Originally reported against the ASL
12908 compiler because the code generator now optimizes integers to
12909 their minimal AML representation (i.e. AML constants if possible.)
12910 The _PRT code now handles all AML constant opcodes correctly
12911 (Zero, One, Ones, Revision).
12913 Fixed a problem with the Concatenate operator in the AML
12914 interpreter where a buffer result object was incorrectly marked as
12915 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
12917 All package sub-objects are now fully resolved before they are
12918 returned from the external ACPI interfaces. This means that name
12919 strings are resolved to object handles, and constant operators
12920 (Zero, One, Ones, Revision) are resolved to Integers.
12922 Implemented immediate resolution of the AML Constant opcodes
12923 (Zero, One, Ones, Revision) to Integer objects upon detection
12924 within the AML stream. This has simplified and reduced the
12925 generated code size of the subsystem by eliminating about 10
12926 switch statements for these constants (which previously were
12927 contained in Reference objects.) The complicating issues are that
12928 the Zero opcode is used as a "placeholder" for unspecified
12929 optional target operands and stores to constants are defined to be
12932 Code and Data Size: Current core subsystem library sizes are shown
12933 below. These are the code and data sizes for the acpica.lib
12934 produced by the Microsoft Visual C++ 6.0 compiler, and these
12935 values do not include any ACPI driver or OSPM code. The debug
12936 version of the code includes the debug output trace mechanism and
12937 has a larger code and data size. Note that these values will vary
12938 depending on the efficiency of the compiler and the compiler
12939 options used during generation.
12942 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
12943 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
12945 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
12946 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
12952 Added preliminary support for obtaining _TRA data for PCI root
12953 bridges (Bjorn Helgaas).
12956 3) iASL Compiler Version X2046:
12958 Fixed a problem where the "_DDN" reserved name was defined to be a
12959 control method with one argument. There are no arguments, and
12960 _DDN does not have to be a control method.
12962 Fixed a problem with the Linux version of the compiler where the
12963 source lines printed with error messages were the wrong lines.
12964 This turned out to be the "LF versus CR/LF" difference between
12965 Windows and Unix. This appears to be the longstanding issue
12966 concerning listing output and error messages.
12968 Fixed a problem with the Linux version of compiler where opcode
12969 names within error messages were wrong. This was caused by a
12970 slight difference in the output of the Flex tool on Linux versus
12973 Fixed a problem with the Linux compiler where the hex output files
12974 contained some garbage data caused by an internal buffer overrun.
12977 ----------------------------------------
12978 17 May 2002. Summary of changes for this release.
12981 1) ACPI CA Core Subsystem Version 20020517:
12983 Implemented a workaround to an BIOS bug discovered on the HP
12984 OmniBook where the FADT revision number and the table size are
12985 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
12986 behavior is to fallback to using only the ACPI 1.0 fields of the
12987 FADT if the table is too small to be a ACPI 2.0 table as claimed
12988 by the revision number. Although this is a BIOS bug, this is a
12989 case where the workaround is simple enough and with no side
12990 effects, so it seemed prudent to add it. A warning message is
12993 Implemented minimum size checks for the fixed-length ACPI tables -
12994 - the FADT and FACS, as well as consistency checks between the
12995 revision number and the table size.
12997 Fixed a reported problem in the table override support where the
12998 new table pointer was incorrectly treated as a physical address
12999 instead of a logical address.
13001 Eliminated the use of the AE_AML_ERROR exception and replaced it
13002 with more descriptive codes.
13004 Fixed a problem where an exception would occur if an ASL Field was
13005 defined with no named Field Units underneath it (used by some
13008 Code and Data Size: Current core subsystem library sizes are shown
13009 below. These are the code and data sizes for the acpica.lib
13010 produced by the Microsoft Visual C++ 6.0 compiler, and these
13011 values do not include any ACPI driver or OSPM code. The debug
13012 version of the code includes the debug output trace mechanism and
13013 has a larger code and data size. Note that these values will vary
13014 depending on the efficiency of the compiler and the compiler
13015 options used during generation.
13018 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
13019 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
13021 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
13022 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
13028 Much work done on ACPI init (MADT and PCI IRQ routing support).
13029 (Paul D. and Dominik Brodowski)
13031 Fix PCI IRQ-related panic on boot (Sam Revitch)
13033 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
13035 Fix "MHz" typo (Dominik Brodowski)
13037 Fix RTC year 2000 issue (Dominik Brodowski)
13039 Preclude multiple button proc entries (Eric Brunet)
13041 Moved arch-specific code out of include/platform/aclinux.h
13043 3) iASL Compiler Version X2044:
13045 Implemented error checking for the string used in the EISAID macro
13046 (Usually used in the definition of the _HID object.) The code now
13047 strictly enforces the PnP format - exactly 7 characters, 3
13048 uppercase letters and 4 hex digits.
13050 If a raw string is used in the definition of the _HID object
13051 (instead of the EISAID macro), the string must contain all
13052 alphanumeric characters (e.g., "*PNP0011" is not allowed because
13055 Implemented checking for invalid use of ACPI reserved names for
13056 most of the name creation operators (Name, Device, Event, Mutex,
13057 OperationRegion, PowerResource, Processor, and ThermalZone.)
13058 Previously, this check was only performed for control methods.
13060 Implemented an additional check on the Name operator to emit an
13061 error if a reserved name that must be implemented in ASL as a
13062 control method is used. We know that a reserved name must be a
13063 method if it is defined with input arguments.
13065 The warning emitted when a namespace object reference is not found
13066 during the cross reference phase has been changed into an error.
13067 The "External" directive should be used for names defined in other
13071 4) Tools and Utilities
13073 The 16-bit tools (adump16 and aexec16) have been regenerated and
13076 Fixed a problem with the output of both acpidump and adump16 where
13077 the indentation of closing parentheses and brackets was not
13079 aligned properly with the parent block.
13082 ----------------------------------------
13083 03 May 2002. Summary of changes for this release.
13086 1) ACPI CA Core Subsystem Version 20020503:
13088 Added support a new OSL interface that allows the host operating
13090 system software to override the DSDT found in the firmware -
13091 AcpiOsTableOverride. With this interface, the OSL can examine the
13092 version of the firmware DSDT and replace it with a different one
13095 Added new external interfaces for accessing ACPI registers from
13096 device drivers and other system software - AcpiGetRegister and
13097 AcpiSetRegister. This was simply an externalization of the
13098 existing AcpiHwBitRegister interfaces.
13100 Fixed a regression introduced in the previous build where the
13101 ASL/AML CreateField operator always returned an error,
13102 "destination must be a NS Node".
13104 Extended the maximum time (before failure) to successfully enable
13105 ACPI mode to 3 seconds.
13107 Code and Data Size: Current core subsystem library sizes are shown
13108 below. These are the code and data sizes for the acpica.lib
13109 produced by the Microsoft Visual C++ 6.0 compiler, and these
13110 values do not include any ACPI driver or OSPM code. The debug
13111 version of the code includes the debug output trace mechanism and
13112 has a larger code and data size. Note that these values will vary
13113 depending on the efficiency of the compiler and the compiler
13114 options used during generation.
13117 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
13118 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
13120 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
13121 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
13126 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
13127 free. While 3 out of 4 of our in-house systems work fine, the last
13128 one still hangs when testing the LAPIC timer.
13130 Renamed many files in 2.5 kernel release to omit "acpi_" from the
13133 Added warning on boot for Presario 711FR.
13135 Sleep improvements (Pavel Machek)
13137 ACPI can now be built without CONFIG_PCI enabled.
13139 IA64: Fixed memory map functions (JI Lee)
13142 3) iASL Compiler Version X2043:
13144 Added support to allow the compiler to be integrated into the MS
13145 VC++ development environment for one-button compilation of single
13146 files or entire projects -- with error-to-source-line mapping.
13148 Implemented support for compile-time constant folding for the
13149 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
13150 specification. This allows the ASL writer to use expressions
13151 instead of Integer/Buffer/String constants in terms that must
13152 evaluate to constants at compile time and will also simplify the
13153 emitted AML in any such sub-expressions that can be folded
13154 (evaluated at compile-time.) This increases the size of the
13155 compiler significantly because a portion of the ACPI CA AML
13156 interpreter is included within the compiler in order to pre-
13157 evaluate constant expressions.
13160 Fixed a problem with the "Unicode" ASL macro that caused the
13161 compiler to fault. (This macro is used in conjunction with the
13162 _STR reserved name.)
13164 Implemented an AML opcode optimization to use the Zero, One, and
13165 Ones opcodes where possible to further reduce the size of integer
13166 constants and thus reduce the overall size of the generated AML
13169 Implemented error checking for new reserved terms for ACPI version
13172 Implemented the -qr option to display the current list of ACPI
13173 reserved names known to the compiler.
13175 Implemented the -qc option to display the current list of ASL
13176 operators that are allowed within constant expressions and can
13177 therefore be folded at compile time if the operands are constants.
13182 Updated the Programmer's Reference for new interfaces, data types,
13183 and memory allocation model options.
13185 Updated the iASL Compiler User Reference to apply new format and
13186 add information about new features and options.
13188 ----------------------------------------
13189 19 April 2002. Summary of changes for this release.
13191 1) ACPI CA Core Subsystem Version 20020419:
13193 The source code base for the Core Subsystem has been completely
13194 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
13195 versions. The Lint option files used are included in the
13196 /acpi/generate/lint directory.
13198 Implemented enhanced status/error checking across the entire
13199 Hardware manager subsystem. Any hardware errors (reported from
13200 the OSL) are now bubbled up and will abort a running control
13204 Fixed a problem where the per-ACPI-table integer width (32 or 64)
13205 was stored only with control method nodes, causing a fault when
13206 non-control method code was executed during table loading. The
13207 solution implemented uses a global variable to indicate table
13208 width across the entire ACPI subsystem. Therefore, ACPI CA does
13209 not support mixed integer widths across different ACPI tables
13212 Fixed a problem where NULL extended fields (X fields) in an ACPI
13213 2.0 ACPI FADT caused the table load to fail. Although the
13214 existing ACPI specification is a bit fuzzy on this topic, the new
13215 behavior is to fall back on a ACPI 1.0 field if the corresponding
13216 ACPI 2.0 X field is zero (even though the table revision indicates
13217 a full ACPI 2.0 table.) The ACPI specification will be updated to
13218 clarify this issue.
13220 Fixed a problem with the SystemMemory operation region handler
13221 where memory was always accessed byte-wise even if the AML-
13222 specified access width was larger than a byte. This caused
13223 problems on systems with memory-mapped I/O. Memory is now
13224 accessed with the width specified. On systems that do not support
13225 non-aligned transfers, a check is made to guarantee proper address
13226 alignment before proceeding in order to avoid an AML-caused
13227 alignment fault within the kernel.
13230 Fixed a problem with the ExtendedIrq resource where only one byte
13231 of the 4-byte Irq field was extracted.
13233 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
13234 function was out of date and required a rewrite.
13236 Code and Data Size: Current core subsystem library sizes are shown
13237 below. These are the code and data sizes for the acpica.lib
13238 produced by the Microsoft Visual C++ 6.0 compiler, and these
13239 values do not include any ACPI driver or OSPM code. The debug
13240 version of the code includes the debug output trace mechanism and
13241 has a larger code and data size. Note that these values will vary
13242 depending on the efficiency of the compiler and the compiler
13243 options used during generation.
13246 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
13247 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
13249 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
13250 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
13255 PCI IRQ routing fixes (Dominik Brodowski)
13258 3) iASL Compiler Version X2042:
13260 Implemented an additional compile-time error check for a field
13261 unit whose size + minimum access width would cause a run-time
13262 access beyond the end-of-region. Previously, only the field size
13263 itself was checked.
13265 The Core subsystem and iASL compiler now share a common parse
13266 object in preparation for compile-time evaluation of the type
13267 3/4/5 ASL operators.
13270 ----------------------------------------
13271 Summary of changes for this release: 03_29_02
13273 1) ACPI CA Core Subsystem Version 20020329:
13275 Implemented support for late evaluation of TermArg operands to
13276 Buffer and Package objects. This allows complex expressions to be
13277 used in the declarations of these object types.
13279 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
13280 1.0, if the field was larger than 32 bits, it was returned as a
13281 buffer - otherwise it was returned as an integer. In ACPI 2.0,
13282 the field is returned as a buffer only if the field is larger than
13283 64 bits. The TableRevision is now considered when making this
13284 conversion to avoid incompatibility with existing ASL code.
13286 Implemented logical addressing for AcpiOsGetRootPointer. This
13287 allows an RSDP with either a logical or physical address. With
13288 this support, the host OS can now override all ACPI tables with
13289 one logical RSDP. Includes implementation of "typed" pointer
13290 support to allow a common data type for both physical and logical
13291 pointers internally. This required a change to the
13292 AcpiOsGetRootPointer interface.
13294 Implemented the use of ACPI 2.0 Generic Address Structures for all
13295 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
13296 mapped I/O for these ACPI features.
13298 Initialization now ignores not only non-required tables (All
13299 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
13300 not validate the table headers of unrecognized tables.
13302 Fixed a problem where a notify handler could only be
13303 installed/removed on an object of type Device. All "notify"
13305 objects are now supported -- Devices, Processor, Power, and
13308 Removed most verbosity from the ACPI_DB_INFO debug level. Only
13309 critical information is returned when this debug level is enabled.
13311 Code and Data Size: Current core subsystem library sizes are shown
13312 below. These are the code and data sizes for the acpica.lib
13313 produced by the Microsoft Visual C++ 6.0 compiler, and these
13314 values do not include any ACPI driver or OSPM code. The debug
13315 version of the code includes the debug output trace mechanism and
13316 has a larger code and data size. Note that these values will vary
13317 depending on the efficiency of the compiler and the compiler
13318 options used during generation.
13321 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
13322 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
13324 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
13325 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
13330 The processor driver (acpi_processor.c) now fully supports ACPI
13331 2.0-based processor performance control (e.g. Intel(R)
13332 SpeedStep(TM) technology) Note that older laptops that only have
13333 the Intel "applet" interface are not supported through this. The
13334 'limit' and 'performance' interface (/proc) are fully functional.
13335 [Note that basic policy for controlling performance state
13336 transitions will be included in the next version of ospmd.] The
13337 idle handler was modified to more aggressively use C2, and PIIX4
13338 errata handling underwent a complete overhaul (big thanks to
13339 Dominik Brodowski).
13341 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
13342 based devices in the ACPI namespace are now dynamically bound
13343 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
13344 This allows, among other things, ACPI to resolve bus numbers for
13345 subordinate PCI bridges.
13347 Enhanced PCI IRQ routing to get the proper bus number for _PRT
13348 entries defined underneath PCI bridges.
13350 Added IBM 600E to bad bios list due to invalid _ADR value for
13351 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
13353 In the process of adding full MADT support (e.g. IOAPIC) for IA32
13354 (acpi.c, mpparse.c) -- stay tuned.
13356 Added back visual differentiation between fixed-feature and
13357 control-method buttons in dmesg. Buttons are also subtyped (e.g.
13358 button/power/PWRF) to simplify button identification.
13360 We no longer use -Wno-unused when compiling debug. Please ignore
13361 any "_THIS_MODULE defined but not used" messages.
13363 Can now shut down the system using "magic sysrq" key.
13366 3) iASL Compiler version 2041:
13368 Fixed a problem where conversion errors for hex/octal/decimal
13369 constants were not reported.
13371 Implemented a fix for the General Register template Address field.
13372 This field was 8 bits when it should be 64.
13374 Fixed a problem where errors/warnings were no longer being emitted
13375 within the listing output file.
13377 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
13378 exactly 4 characters, alphanumeric only.
13383 ----------------------------------------
13384 Summary of changes for this release: 03_08_02
13387 1) ACPI CA Core Subsystem Version 20020308:
13389 Fixed a problem with AML Fields where the use of the "AccessAny"
13390 keyword could cause an interpreter error due to attempting to read
13391 or write beyond the end of the parent Operation Region.
13393 Fixed a problem in the SystemMemory Operation Region handler where
13394 an attempt was made to map memory beyond the end of the region.
13395 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
13396 errors on some Linux systems.
13398 Fixed a problem where the interpreter/namespace "search to root"
13399 algorithm was not functioning for some object types. Relaxed the
13400 internal restriction on the search to allow upsearches for all
13401 external object types as well as most internal types.
13406 We now use safe_halt() macro versus individual calls to sti | hlt.
13408 Writing to the processor limit interface should now work. "echo 1"
13409 will increase the limit, 2 will decrease, and 0 will reset to the
13416 Fixed segfault on Linux version.
13419 ----------------------------------------
13420 Summary of changes for this release: 02_25_02
13422 1) ACPI CA Core Subsystem:
13425 Fixed a problem where the GPE bit masks were not initialized
13426 properly, causing erratic GPE behavior.
13428 Implemented limited support for multiple calling conventions. The
13429 code can be generated with either the VPL (variable parameter
13430 list, or "C") convention, or the FPL (fixed parameter list, or
13431 "Pascal") convention. The core subsystem is about 3.4% smaller
13432 when generated with FPL.
13437 Re-add some /proc/acpi/event functionality that was lost during
13440 Resolved issue with /proc events for fixed-feature buttons showing
13441 up as the system device.
13443 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
13445 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
13447 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
13449 Fixed limit interface & usage to fix bugs with passive cooling
13452 Restructured PRT support.
13455 ----------------------------------------
13456 Summary of changes for this label: 02_14_02
13459 1) ACPI CA Core Subsystem:
13461 Implemented support in AcpiLoadTable to allow loading of FACS and
13464 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
13465 been removed. All 64-bit platforms should be migrated to the ACPI
13466 2.0 tables. The actbl71.h header has been removed from the source
13469 All C macros defined within the subsystem have been prefixed with
13470 "ACPI_" to avoid collision with other system include files.
13472 Removed the return value for the two AcpiOsPrint interfaces, since
13473 it is never used and causes lint warnings for ignoring the return
13476 Added error checking to all internal mutex acquire and release
13477 calls. Although a failure from one of these interfaces is
13478 probably a fatal system error, these checks will cause the
13479 immediate abort of the currently executing method or interface.
13481 Fixed a problem where the AcpiSetCurrentResources interface could
13482 fault. This was a side effect of the deployment of the new memory
13485 Fixed a couple of problems with the Global Lock support introduced
13486 in the last major build. The "common" (1.0/2.0) internal FACS was
13487 being overwritten with the FACS signature and clobbering the
13488 Global Lock pointer. Also, the actual firmware FACS was being
13489 unmapped after construction of the "common" FACS, preventing
13490 access to the actual Global Lock field within it. The "common"
13491 internal FACS is no longer installed as an actual ACPI table; it
13492 is used simply as a global.
13494 Code and Data Size: Current core subsystem library sizes are shown
13495 below. These are the code and data sizes for the acpica.lib
13496 produced by the Microsoft Visual C++ 6.0 compiler, and these
13497 values do not include any ACPI driver or OSPM code. The debug
13498 version of the code includes the debug output trace mechanism and
13499 has a larger code and data size. Note that these values will vary
13500 depending on the efficiency of the compiler and the compiler
13501 options used during generation.
13503 Previous Release (02_07_01)
13504 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
13505 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
13507 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
13508 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
13513 Updated Linux-specific code for core macro and OSL interface
13514 changes described above.
13516 Improved /proc/acpi/event. It now can be opened only once and has
13517 proper poll functionality.
13519 Fixed and restructured power management (acpi_bus).
13521 Only create /proc "view by type" when devices of that class exist.
13523 Fixed "charging/discharging" bug (and others) in acpi_battery.
13525 Improved thermal zone code.
13528 3) ASL Compiler, version X2039:
13531 Implemented the new compiler restriction on ASL String hex/octal
13532 escapes to non-null, ASCII values. An error results if an invalid
13533 value is used. (This will require an ACPI 2.0 specification
13536 AML object labels that are output to the optional C and ASM source
13537 are now prefixed with both the ACPI table signature and table ID
13538 to help guarantee uniqueness within a large BIOS project.
13541 ----------------------------------------
13542 Summary of changes for this label: 02_01_02
13544 1) ACPI CA Core Subsystem:
13546 ACPI 2.0 support is complete in the entire Core Subsystem and the
13547 ASL compiler. All new ACPI 2.0 operators are implemented and all
13548 other changes for ACPI 2.0 support are complete. With
13549 simultaneous code and data optimizations throughout the subsystem,
13550 ACPI 2.0 support has been implemented with almost no additional
13551 cost in terms of code and data size.
13553 Implemented a new mechanism for allocation of return buffers. If
13554 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
13555 be allocated on behalf of the caller. Consolidated all return
13556 buffer validation and allocation to a common procedure. Return
13557 buffers will be allocated via the primary OSL allocation interface
13558 since it appears that a separate pool is not needed by most users.
13559 If a separate pool is required for these buffers, the caller can
13560 still use the original mechanism and pre-allocate the buffer(s).
13562 Implemented support for string operands within the DerefOf
13565 Restructured the Hardware and Event managers to be table driven,
13566 simplifying the source code and reducing the amount of generated
13569 Split the common read/write low-level ACPI register bitfield
13570 procedure into a separate read and write, simplifying the code
13573 Obsoleted the AcpiOsCallocate OSL interface. This interface was
13574 used only a handful of times and didn't have enough critical mass
13575 for a separate interface. Replaced with a common calloc procedure
13578 Fixed a reported problem with the GPE number mapping mechanism
13579 that allows GPE1 numbers to be non-contiguous with GPE0.
13580 Reorganized the GPE information and shrunk a large array that was
13581 originally large enough to hold info for all possible GPEs (256)
13582 to simply large enough to hold all GPEs up to the largest GPE
13583 number on the machine.
13585 Fixed a reported problem with resource structure alignment on 64-
13588 Changed the AcpiEnableEvent and AcpiDisableEvent external
13589 interfaces to not require any flags for the common case of
13590 enabling/disabling a GPE.
13592 Implemented support to allow a "Notify" on a Processor object.
13594 Most TBDs in comments within the source code have been resolved
13598 Fixed a problem in the interpreter where a standalone parent
13599 prefix (^) was not handled correctly in the interpreter and
13602 Removed obsolete and unnecessary GPE save/restore code.
13604 Implemented Field support in the ASL Load operator. This allows a
13605 table to be loaded from a named field, in addition to loading a
13606 table directly from an Operation Region.
13608 Implemented timeout and handle support in the external Global Lock
13611 Fixed a problem in the AcpiDump utility where pathnames were no
13612 longer being generated correctly during the dump of named objects.
13614 Modified the AML debugger to give a full display of if/while
13615 predicates instead of just one AML opcode at a time. (The
13616 predicate can have several nested ASL statements.) The old method
13617 was confusing during single stepping.
13619 Code and Data Size: Current core subsystem library sizes are shown
13620 below. These are the code and data sizes for the acpica.lib
13621 produced by the Microsoft Visual C++ 6.0 compiler, and these
13622 values do not include any ACPI driver or OSPM code. The debug
13623 version of the code includes the debug output trace mechanism and
13624 has a larger code and data size. Note that these values will vary
13625 depending on the efficiency of the compiler and the compiler
13626 options used during generation.
13628 Previous Release (12_18_01)
13629 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
13630 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
13632 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
13633 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
13637 Implemented fix for PIIX reverse throttling errata (Processor
13640 Added new Limit interface (Processor and Thermal drivers)
13642 New thermal policy (Thermal driver)
13644 Many updates to /proc
13646 Battery "low" event support (Battery driver)
13648 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
13650 IA32 - IA64 initialization unification, no longer experimental
13652 Menuconfig options redesigned
13654 3) ASL Compiler, version X2037:
13656 Implemented several new output features to simplify integration of
13657 AML code into firmware: 1) Output the AML in C source code with
13658 labels for each named ASL object. The original ASL source code
13659 is interleaved as C comments. 2) Output the AML in ASM source code
13660 with labels and interleaved ASL source. 3) Output the AML in
13661 raw hex table form, in either C or ASM.
13663 Implemented support for optional string parameters to the
13664 LoadTable operator.
13666 Completed support for embedded escape sequences within string
13667 literals. The compiler now supports all single character escapes
13668 as well as the Octal and Hex escapes. Note: the insertion of a
13669 null byte into a string literal (via the hex/octal escape) causes
13670 the string to be immediately terminated. A warning is issued.
13672 Fixed a problem where incorrect AML was generated for the case
13673 where an ASL namepath consists of a single parent prefix (
13675 ) with no trailing name segments.
13677 The compiler has been successfully generated with a 64-bit C
13683 ----------------------------------------
13684 Summary of changes for this label: 12_18_01
13688 Enhanced blacklist with reason and severity fields. Any table's
13689 signature may now be used to identify a blacklisted system.
13691 Call _PIC control method to inform the firmware which interrupt
13692 model the OS is using. Turn on any disabled link devices.
13694 Cleaned up busmgr /proc error handling (Andreas Dilger)
13696 2) ACPI CA Core Subsystem:
13698 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
13701 Completed implementation of the ACPI 2.0 "Continue",
13702 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
13703 operators. All new ACPI 2.0 operators are now implemented in both
13704 the ASL compiler and the AML interpreter. The only remaining ACPI
13705 2.0 task is support for the String data type in the DerefOf
13706 operator. Fixed a problem with AcquireMutex where the status code
13707 was lost if the caller had to actually wait for the mutex.
13709 Increased the maximum ASL Field size from 64K bits to 4G bits.
13711 Completed implementation of the external Global Lock interfaces --
13712 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
13713 Handler parameters were added.
13715 Completed another pass at removing warnings and issues when
13716 compiling with 64-bit compilers. The code now compiles cleanly
13717 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
13718 add and subtract (diff) macros have changed considerably.
13721 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
13722 64-bit platforms, 32-bits on all others. This type is used
13723 wherever memory allocation and/or the C sizeof() operator is used,
13724 and affects the OSL memory allocation interfaces AcpiOsAllocate
13725 and AcpiOsCallocate.
13727 Implemented sticky user breakpoints in the AML debugger.
13729 Code and Data Size: Current core subsystem library sizes are shown
13730 below. These are the code and data sizes for the acpica.lib
13731 produced by the Microsoft Visual C++ 6.0 compiler, and these
13732 values do not include any ACPI driver or OSPM code. The debug
13733 version of the code includes the debug output trace mechanism and
13734 has a larger code and data size. Note that these values will vary
13735 depending on the efficiency of the compiler and the compiler
13736 options used during generation.
13738 Previous Release (12_05_01)
13739 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
13740 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
13742 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
13743 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
13745 3) ASL Compiler, version X2034:
13747 Now checks for (and generates an error if detected) the use of a
13748 Break or Continue statement without an enclosing While statement.
13751 Successfully generated the compiler with the Intel 64-bit C
13754 ----------------------------------------
13755 Summary of changes for this label: 12_05_01
13757 1) ACPI CA Core Subsystem:
13759 The ACPI 2.0 CopyObject operator is fully implemented. This
13760 operator creates a new copy of an object (and is also used to
13761 bypass the "implicit conversion" mechanism of the Store operator.)
13763 The ACPI 2.0 semantics for the SizeOf operator are fully
13764 implemented. The change is that performing a SizeOf on a
13765 reference object causes an automatic dereference of the object to
13766 tha actual value before the size is evaluated. This behavior was
13767 undefined in ACPI 1.0.
13769 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
13770 have been implemented. The interrupt polarity and mode are now
13773 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
13774 appearing in Package objects were not properly converted to
13775 integers when the internal Package was converted to an external
13776 object (via the AcpiEvaluateObject interface.)
13778 Fixed a problem with the namespace object deletion mechanism for
13779 objects created by control methods. There were two parts to this
13780 problem: 1) Objects created during the initialization phase method
13781 parse were not being deleted, and 2) The object owner ID mechanism
13782 to track objects was broken.
13784 Fixed a problem where the use of the ASL Scope operator within a
13785 control method would result in an invalid opcode exception.
13787 Fixed a problem introduced in the previous label where the buffer
13788 length required for the _PRT structure was not being returned
13791 Code and Data Size: Current core subsystem library sizes are shown
13792 below. These are the code and data sizes for the acpica.lib
13793 produced by the Microsoft Visual C++ 6.0 compiler, and these
13794 values do not include any ACPI driver or OSPM code. The debug
13795 version of the code includes the debug output trace mechanism and
13796 has a larger code and data size. Note that these values will vary
13797 depending on the efficiency of the compiler and the compiler
13798 options used during generation.
13800 Previous Release (11_20_01)
13801 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
13802 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
13805 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
13806 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
13810 Updated all files to apply cleanly against 2.4.16.
13812 Added basic PCI Interrupt Routing Table (PRT) support for IA32
13813 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
13814 version supports both static and dyanmic PRT entries, but dynamic
13815 entries are treated as if they were static (not yet
13816 reconfigurable). Architecture- specific code to use this data is
13817 absent on IA32 but should be available shortly.
13819 Changed the initialization sequence to start the ACPI interpreter
13820 (acpi_init) prior to initialization of the PCI driver (pci_init)
13821 in init/main.c. This ordering is required to support PRT and
13822 facilitate other (future) enhancement. A side effect is that the
13823 ACPI bus driver and certain device drivers can no longer be loaded
13826 Modified the 'make menuconfig' options to allow PCI Interrupt
13827 Routing support to be included without the ACPI Bus and other
13830 3) ASL Compiler, version X2033:
13832 Fixed some issues with the use of the new CopyObject and
13833 DataTableRegion operators. Both are fully functional.
13835 ----------------------------------------
13836 Summary of changes for this label: 11_20_01
13838 20 November 2001. Summary of changes for this release.
13840 1) ACPI CA Core Subsystem:
13842 Updated Index support to match ACPI 2.0 semantics. Storing a
13843 Integer, String, or Buffer to an Index of a Buffer will store only
13844 the least-significant byte of the source to the Indexed buffer
13845 byte. Multiple writes are not performed.
13847 Fixed a problem where the access type used in an AccessAs ASL
13848 operator was not recorded correctly into the field object.
13850 Fixed a problem where ASL Event objects were created in a
13851 signalled state. Events are now created in an unsignalled state.
13853 The internal object cache is now purged after table loading and
13854 initialization to reduce the use of dynamic kernel memory -- on
13855 the assumption that object use is greatest during the parse phase
13856 of the entire table (versus the run-time use of individual control
13859 ACPI 2.0 variable-length packages are now fully operational.
13861 Code and Data Size: Code and Data optimizations have permitted new
13862 feature development with an actual reduction in the library size.
13863 Current core subsystem library sizes are shown below. These are
13864 the code and data sizes for the acpica.lib produced by the
13865 Microsoft Visual C++ 6.0 compiler, and these values do not include
13866 any ACPI driver or OSPM code. The debug version of the code
13867 includes the debug output trace mechanism and has a larger code
13868 and data size. Note that these values will vary depending on the
13869 efficiency of the compiler and the compiler options used during
13872 Previous Release (11_09_01):
13873 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
13874 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
13877 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
13878 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
13882 Enhanced the ACPI boot-time initialization code to allow the use
13883 of Local APIC tables for processor enumeration on IA-32, and to
13884 pave the way for a fully MPS-free boot (on SMP systems) in the
13885 near future. This functionality replaces
13886 arch/i386/kernel/acpitables.c, which was introduced in an earlier
13887 2.4.15-preX release. To enable this feature you must add
13888 "acpi_boot=on" to the kernel command line -- see the help entry
13889 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
13892 Restructured the configuration options to allow boot-time table
13893 parsing support without inclusion of the ACPI Interpreter (and
13896 NOTE: This release does not include fixes for the reported events,
13897 power-down, and thermal passive cooling issues (coming soon).
13901 Added additional typechecking for Fields within restricted access
13902 Operation Regions. All fields within EC and CMOS regions must be
13903 declared with ByteAcc. All fields withing SMBus regions must be
13904 declared with the BufferAcc access type.
13906 Fixed a problem where the listing file output of control methods
13907 no longer interleaved the actual AML code with the ASL source
13913 ----------------------------------------
13914 Summary of changes for this label: 11_09_01
13916 1) ACPI CA Core Subsystem:
13918 Implemented ACPI 2.0-defined support for writes to fields with a
13919 Buffer, String, or Integer source operand that is smaller than the
13920 target field. In these cases, the source operand is zero-extended
13921 to fill the target field.
13923 Fixed a problem where a Field starting bit offset (within the
13924 parent operation region) was calculated incorrectly if the
13926 alignment of the field differed from the access width. This
13927 affected CreateWordField, CreateDwordField, CreateQwordField, and
13928 possibly other fields that use the "AccessAny" keyword.
13930 Fixed a problem introduced in the 11_02_01 release where indirect
13931 stores through method arguments did not operate correctly.
13935 Implemented boot-time ACPI table parsing support
13936 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
13937 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
13938 legacy BIOS interfaces (e.g. MPS) for the configuration of system
13939 processors, memory, and interrupts during setup_arch(). Note that
13940 this patch does not include the required architecture-specific
13941 changes required to apply this information -- subsequent patches
13942 will be posted for both IA32 and IA64 to achieve this.
13944 Added low-level sleep support for IA32 platforms, courtesy of Pat
13945 Mochel. This allows IA32 systems to transition to/from various
13946 sleeping states (e.g. S1, S3), although the lack of a centralized
13947 driver model and power-manageable drivers will prevent its
13948 (successful) use on most systems.
13950 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
13951 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
13952 tables" option, etc.
13954 Increased the default timeout for the EC driver from 1ms to 10ms
13955 (1000 cycles of 10us) to try to address AE_TIME errors during EC
13958 ----------------------------------------
13959 Summary of changes for this label: 11_02_01
13961 1) ACPI CA Core Subsystem:
13963 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
13964 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
13967 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
13968 changes to support ACPI 2.0 Qword field access. Read/Write
13969 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
13970 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
13971 the value parameter for the address space handler interface is now
13972 an ACPI_INTEGER. OSL implementations of these interfaces must now
13973 handle the case where the Width parameter is 64.
13975 Index Fields: Fixed a problem where unaligned bit assembly and
13976 disassembly for IndexFields was not supported correctly.
13978 Index and Bank Fields: Nested Index and Bank Fields are now
13979 supported. During field access, a check is performed to ensure
13980 that the value written to an Index or Bank register is not out of
13981 the range of the register. The Index (or Bank) register is
13982 written before each access to the field data. Future support will
13983 include allowing individual IndexFields to be wider than the
13984 DataRegister width.
13986 Fields: Fixed a problem where the AML interpreter was incorrectly
13987 attempting to write beyond the end of a Field/OpRegion. This was
13988 a boundary case that occurred when a DWORD field was written to a
13989 BYTE access OpRegion, forcing multiple writes and causing the
13990 interpreter to write one datum too many.
13992 Fields: Fixed a problem with Field/OpRegion access where the
13993 starting bit address of a field was incorrectly calculated if the
13994 current access type was wider than a byte (WordAcc, DwordAcc, or
13997 Fields: Fixed a problem where forward references to individual
13998 FieldUnits (individual Field names within a Field definition) were
13999 not resolved during the AML table load.
14001 Fields: Fixed a problem where forward references from a Field
14002 definition to the parent Operation Region definition were not
14003 resolved during the AML table load.
14005 Fields: Duplicate FieldUnit names within a scope are now detected
14006 during AML table load.
14008 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
14009 returned an incorrect name for the root node.
14011 Code and Data Size: Code and Data optimizations have permitted new
14012 feature development with an actual reduction in the library size.
14013 Current core subsystem library sizes are shown below. These are
14014 the code and data sizes for the acpica.lib produced by the
14015 Microsoft Visual C++ 6.0 compiler, and these values do not include
14016 any ACPI driver or OSPM code. The debug version of the code
14017 includes the debug output trace mechanism and has a larger code
14018 and data size. Note that these values will vary depending on the
14019 efficiency of the compiler and the compiler options used during
14022 Previous Release (10_18_01):
14023 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
14024 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
14027 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
14028 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
14032 Improved /proc processor output (Pavel Machek) Re-added
14033 MODULE_LICENSE("GPL") to all modules.
14035 3) ASL Compiler version X2030:
14037 Duplicate FieldUnit names within a scope are now detected and
14042 Programmer Reference updated to reflect OSL and address space
14043 handler interface changes described above.
14045 ----------------------------------------
14046 Summary of changes for this label: 10_18_01
14048 ACPI CA Core Subsystem:
14050 Fixed a problem with the internal object reference count mechanism
14051 that occasionally caused premature object deletion. This resolves
14052 all of the outstanding problem reports where an object is deleted
14053 in the middle of an interpreter evaluation. Although this problem
14054 only showed up in rather obscure cases, the solution to the
14055 problem involved an adjustment of all reference counts involving
14056 objects attached to namespace nodes.
14058 Fixed a problem with Field support in the interpreter where
14059 writing to an aligned field whose length is an exact multiple (2
14060 or greater) of the field access granularity would cause an attempt
14061 to write beyond the end of the field.
14063 The top level AML opcode execution functions within the
14064 interpreter have been renamed with a more meaningful and
14065 consistent naming convention. The modules exmonad.c and
14066 exdyadic.c were eliminated. New modules are exoparg1.c,
14067 exoparg2.c, exoparg3.c, and exoparg6.c.
14069 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
14071 Fixed a problem where the AML debugger was causing some internal
14072 objects to not be deleted during subsystem termination.
14074 Fixed a problem with the external AcpiEvaluateObject interface
14075 where the subsystem would fault if the named object to be
14076 evaluated refered to a constant such as Zero, Ones, etc.
14078 Fixed a problem with IndexFields and BankFields where the
14079 subsystem would fault if the index, data, or bank registers were
14080 not defined in the same scope as the field itself.
14082 Added printf format string checking for compilers that support
14083 this feature. Corrected more than 50 instances of issues with
14084 format specifiers within invocations of ACPI_DEBUG_PRINT
14085 throughout the core subsystem code.
14087 The ASL "Revision" operator now returns the ACPI support level
14088 implemented in the core - the value "2" since the ACPI 2.0 support
14089 is more than 50% implemented.
14091 Enhanced the output of the AML debugger "dump namespace" command
14092 to output in a more human-readable form.
14094 Current core subsystem library code sizes are shown below. These
14096 are the code and data sizes for the acpica.lib produced by the
14097 Microsoft Visual C++ 6.0 compiler, and these values do not include
14098 any ACPI driver or OSPM code. The debug version of the code
14099 includes the full debug trace mechanism -- leading to a much
14101 larger code and data size. Note that these values will vary
14102 depending on the efficiency of the compiler and the compiler
14103 options used during generation.
14105 Previous Label (09_20_01):
14106 Non-Debug Version: 65K Code, 5K Data, 70K Total
14107 Debug Version: 138K Code, 58K Data, 196K Total
14111 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
14112 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
14116 Implemented a "Bad BIOS Blacklist" to track machines that have
14117 known ASL/AML problems.
14119 Enhanced the /proc interface for the thermal zone driver and added
14120 support for _HOT (the critical suspend trip point). The 'info'
14121 file now includes threshold/policy information, and allows setting
14122 of _SCP (cooling preference) and _TZP (polling frequency) values
14123 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
14124 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
14125 preference to the passive/quiet mode (if supported by the ASL).
14127 Implemented a workaround for a gcc bug that resuted in an OOPs
14128 when loading the control method battery driver.
14130 ----------------------------------------
14131 Summary of changes for this label: 09_20_01
14133 ACPI CA Core Subsystem:
14135 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
14136 modified to allow individual GPE levels to be flagged as wake-
14137 enabled (i.e., these GPEs are to remain enabled when the platform
14140 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
14141 support wake-enabled GPEs. This means that upon entering the
14142 sleep state, all GPEs that are not wake-enabled are disabled.
14143 When leaving the sleep state, these GPEs are reenabled.
14145 A local double-precision divide/modulo module has been added to
14146 enhance portability to OS kernels where a 64-bit math library is
14147 not available. The new module is "utmath.c".
14149 Several optimizations have been made to reduce the use of CPU
14150 stack. Originally over 2K, the maximum stack usage is now below
14151 2K at 1860 bytes (1.82k)
14153 Fixed a problem with the AcpiGetFirmwareTable interface where the
14154 root table pointer was not mapped into a logical address properly.
14156 Fixed a problem where a NULL pointer was being dereferenced in the
14157 interpreter code for the ASL Notify operator.
14159 Fixed a problem where the use of the ASL Revision operator
14160 returned an error. This operator now returns the current version
14161 of the ACPI CA core subsystem.
14163 Fixed a problem where objects passed as control method parameters
14164 to AcpiEvaluateObject were always deleted at method termination.
14165 However, these objects may end up being stored into the namespace
14166 by the called method. The object reference count mechanism was
14167 applied to these objects instead of a force delete.
14169 Fixed a problem where static strings or buffers (contained in the
14170 AML code) that are declared as package elements within the ASL
14171 code could cause a fault because the interpreter would attempt to
14172 delete them. These objects are now marked with the "static
14173 object" flag to prevent any attempt to delete them.
14175 Implemented an interpreter optimization to use operands directly
14176 from the state object instead of extracting the operands to local
14177 variables. This reduces stack use and code size, and improves
14180 The module exxface.c was eliminated as it was an unnecessary extra
14183 Current core subsystem library code sizes are shown below. These
14184 are the code and data sizes for the acpica.lib produced by the
14185 Microsoft Visual C++ 6.0 compiler, and these values do not include
14186 any ACPI driver or OSPM code. The debug version of the code
14187 includes the full debug trace mechanism -- leading to a much
14188 larger code and data size. Note that these values will vary
14189 depending on the efficiency of the compiler and the compiler
14190 options used during generation.
14192 Non-Debug Version: 65K Code, 5K Data, 70K Total
14193 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
14194 Total (Previously 195K)
14198 Support for ACPI 2.0 64-bit integers has been added. All ACPI
14199 Integer objects are now 64 bits wide
14201 All Acpi data types and structures are now in lower case. Only
14202 Acpi macros are upper case for differentiation.
14206 Changes to the external interfaces as described above.
14208 ----------------------------------------
14209 Summary of changes for this label: 08_31_01
14211 ACPI CA Core Subsystem:
14213 A bug with interpreter implementation of the ASL Divide operator
14214 was found and fixed. The implicit function return value (not the
14215 explicit store operands) was returning the remainder instead of
14216 the quotient. This was a longstanding bug and it fixes several
14217 known outstanding issues on various platforms.
14219 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
14220 been further optimized for size. There are 700 invocations of the
14221 DEBUG_PRINT macro alone, so each optimization reduces the size of
14222 the debug version of the subsystem significantly.
14224 A stack trace mechanism has been implemented. The maximum stack
14225 usage is about 2K on 32-bit platforms. The debugger command "stat
14226 stack" will display the current maximum stack usage.
14228 All public symbols and global variables within the subsystem are
14229 now prefixed with the string "Acpi". This keeps all of the
14230 symbols grouped together in a kernel map, and avoids conflicts
14231 with other kernel subsystems.
14233 Most of the internal fixed lookup tables have been moved into the
14234 code segment via the const operator.
14236 Several enhancements have been made to the interpreter to both
14237 reduce the code size and improve performance.
14239 Current core subsystem library code sizes are shown below. These
14240 are the code and data sizes for the acpica.lib produced by the
14241 Microsoft Visual C++ 6.0 compiler, and these values do not include
14242 any ACPI driver or OSPM code. The debug version of the code
14243 includes the full debug trace mechanism which contains over 700
14244 invocations of the DEBUG_PRINT macro, 500 function entry macro
14245 invocations, and over 900 function exit macro invocations --
14246 leading to a much larger code and data size. Note that these
14247 values will vary depending on the efficiency of the compiler and
14248 the compiler options used during generation.
14250 Non-Debug Version: 64K Code, 5K Data, 69K Total
14251 Debug Version: 137K Code, 58K Data, 195K Total
14255 Implemented wbinvd() macro, pending a kernel-wide definition.
14257 Fixed /proc/acpi/event to handle poll() and short reads.
14259 ASL Compiler, version X2026:
14261 Fixed a problem introduced in the previous label where the AML
14263 code emitted for package objects produced packages with zero
14266 ----------------------------------------
14267 Summary of changes for this label: 08_16_01
14269 ACPI CA Core Subsystem:
14271 The following ACPI 2.0 ASL operators have been implemented in the
14272 AML interpreter (These are already supported by the Intel ASL
14273 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
14274 ToBuffer. Support for 64-bit AML constants is implemented in the
14275 AML parser, debugger, and disassembler.
14277 The internal memory tracking mechanism (leak detection code) has
14278 been upgraded to reduce the memory overhead (a separate tracking
14279 block is no longer allocated for each memory allocation), and now
14280 supports all of the internal object caches.
14282 The data structures and code for the internal object caches have
14283 been coelesced and optimized so that there is a single cache and
14284 memory list data structure and a single group of functions that
14285 implement generic cache management. This has reduced the code
14286 size in both the debug and release versions of the subsystem.
14288 The DEBUG_PRINT macro(s) have been optimized for size and replaced
14289 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
14290 different, because it generates a single call to an internal
14291 function. This results in a savings of about 90 bytes per
14292 invocation, resulting in an overall code and data savings of about
14293 16% in the debug version of the subsystem.
14297 Fixed C3 disk corruption problems and re-enabled C3 on supporting
14300 Integrated low-level sleep code by Patrick Mochel.
14302 Further tweaked source code Linuxization.
14308 Support for ACPI 2.0 variable length packages is fixed/completed.
14310 Fixed a problem where the optional length parameter for the ACPI
14311 2.0 ToString operator.
14313 Fixed multiple extraneous error messages when a syntax error is
14314 detected within the declaration line of a control method.
14316 ----------------------------------------
14317 Summary of changes for this label: 07_17_01
14319 ACPI CA Core Subsystem:
14321 Added a new interface named AcpiGetFirmwareTable to obtain any
14322 ACPI table via the ACPI signature. The interface can be called at
14323 any time during kernel initialization, even before the kernel
14324 virtual memory manager is initialized and paging is enabled. This
14325 allows kernel subsystems to obtain ACPI tables very early, even
14326 before the ACPI CA subsystem is initialized.
14328 Fixed a problem where Fields defined with the AnyAcc attribute
14329 could be resolved to the incorrect address under the following
14330 conditions: 1) the field width is larger than 8 bits and 2) the
14331 parent operation region is not defined on a DWORD boundary.
14333 Fixed a problem where the interpreter is not being locked during
14334 namespace initialization (during execution of the _INI control
14335 methods), causing an error when an attempt is made to release it
14338 ACPI 2.0 support in the AML Interpreter has begun and will be
14339 ongoing throughout the rest of this year. In this label, The Mod
14340 operator is implemented.
14342 Added a new data type to contain full PCI addresses named
14343 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
14344 and Function values.
14348 Enhanced the Linux version of the source code to change most
14349 capitalized ACPI type names to lowercase. For example, all
14350 instances of ACPI_STATUS are changed to acpi_status. This will
14351 result in a large diff, but the change is strictly cosmetic and
14352 aligns the CA code closer to the Linux coding standard.
14356 The interfaces to the PCI configuration space have been changed to
14357 add the PCI Segment number and to split the single 32-bit combined
14358 DeviceFunction field into two 16-bit fields. This was
14359 accomplished by moving the four values that define an address in
14360 PCI configuration space (segment, bus, device, and function) to
14361 the new ACPI_PCI_ID structure.
14363 The changes to the PCI configuration space interfaces led to a
14364 reexamination of the complete set of address space access
14365 interfaces for PCI, I/O, and Memory. The previously existing 18
14366 interfaces have proven difficult to maintain (any small change
14367 must be propagated across at least 6 interfaces) and do not easily
14368 allow for future expansion to 64 bits if necessary. Also, on some
14369 systems, it would not be appropriate to demultiplex the access
14370 width (8, 16, 32,or 64) before calling the OSL if the
14371 corresponding native OS interfaces contain a similar access width
14372 parameter. For these reasons, the 18 address space interfaces
14373 have been replaced by these 6 new ones:
14375 AcpiOsReadPciConfiguration
14376 AcpiOsWritePciConfiguration
14382 Added a new interface named AcpiOsGetRootPointer to allow the OSL
14383 to perform the platform and/or OS-specific actions necessary to
14384 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
14385 interface will simply call down to the CA core to perform the low-
14386 memory search for the table. On IA-64, the RSDP is obtained from
14387 EFI. Migrating this interface to the OSL allows the CA core to
14389 remain OS and platform independent.
14391 Added a new interface named AcpiOsSignal to provide a generic
14392 "function code and pointer" interface for various miscellaneous
14393 signals and notifications that must be made to the host OS. The
14394 first such signals are intended to support the ASL Fatal and
14395 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
14396 interface has been obsoleted.
14398 The definition of the AcpiFormatException interface has been
14399 changed to simplify its use. The caller no longer must supply a
14400 buffer to the call; A pointer to a const string is now returned
14401 directly. This allows the call to be easily used in printf
14402 statements, etc. since the caller does not have to manage a local
14406 ASL Compiler, Version X2025:
14408 The ACPI 2.0 Switch/Case/Default operators have been implemented
14409 and are fully functional. They will work with all ACPI 1.0
14410 interpreters, since the operators are simply translated to If/Else
14413 The ACPI 2.0 ElseIf operator is implemented and will also work
14414 with 1.0 interpreters, for the same reason.
14416 Implemented support for ACPI 2.0 variable-length packages. These
14417 packages have a separate opcode, and their size is determined by
14418 the interpreter at run-time.
14420 Documentation The ACPI CA Programmer Reference has been updated to
14421 reflect the new interfaces and changes to existing interfaces.
14423 ------------------------------------------
14424 Summary of changes for this label: 06_15_01
14426 ACPI CA Core Subsystem:
14428 Fixed a problem where a DWORD-accessed field within a Buffer
14429 object would get its byte address inadvertently rounded down to
14430 the nearest DWORD. Buffers are always Byte-accessible.
14432 ASL Compiler, version X2024:
14434 Fixed a problem where the Switch() operator would either fault or
14435 hang the compiler. Note however, that the AML code for this ACPI
14436 2.0 operator is not yet implemented.
14438 Compiler uses the new AcpiOsGetTimer interface to obtain compile
14441 Implementation of the CreateField operator automatically converts
14442 a reference to a named field within a resource descriptor from a
14443 byte offset to a bit offset if required.
14445 Added some missing named fields from the resource descriptor
14446 support. These are the names that are automatically created by the
14447 compiler to reference fields within a descriptor. They are only
14448 valid at compile time and are not passed through to the AML
14451 Resource descriptor named fields are now typed as Integers and
14452 subject to compile-time typechecking when used in expressions.
14454 ------------------------------------------
14455 Summary of changes for this label: 05_18_01
14457 ACPI CA Core Subsystem:
14459 Fixed a couple of problems in the Field support code where bits
14460 from adjacent fields could be returned along with the proper field
14461 bits. Restructured the field support code to improve performance,
14462 readability and maintainability.
14464 New DEBUG_PRINTP macro automatically inserts the procedure name
14465 into the output, saving hundreds of copies of procedure name
14466 strings within the source, shrinking the memory footprint of the
14467 debug version of the core subsystem.
14469 Source Code Structure:
14471 The source code directory tree was restructured to reflect the
14472 current organization of the component architecture. Some files
14473 and directories have been moved and/or renamed.
14477 Fixed leaking kacpidpc processes.
14479 Fixed queueing event data even when /proc/acpi/event is not
14482 ASL Compiler, version X2020:
14484 Memory allocation performance enhancement - over 24X compile time
14485 improvement on large ASL files. Parse nodes and namestring
14486 buffers are now allocated from a large internal compiler buffer.
14488 The temporary .SRC file is deleted unless the "-s" option is
14491 The "-d" debug output option now sends all output to the .DBG file
14492 instead of the console.
14494 "External" second parameter is now optional
14496 "ElseIf" syntax now properly allows the predicate
14498 Last operand to "Load" now recognized as a Target operand
14500 Debug object can now be used anywhere as a normal object.
14502 ResourceTemplate now returns an object of type BUFFER
14504 EISAID now returns an object of type INTEGER
14506 "Index" now works with a STRING operand
14508 "LoadTable" now accepts optional parameters
14510 "ToString" length parameter is now optional
14512 "Interrupt (ResourceType," parse error fixed.
14514 "Register" with a user-defined region space parse error fixed
14516 Escaped backslash at the end of a string ("\\") scan/parse error
14519 "Revision" is now an object of type INTEGER.
14523 ------------------------------------------
14524 Summary of changes for this label: 05_02_01
14528 /proc/acpi/event now blocks properly.
14530 Removed /proc/sys/acpi. You can still dump your DSDT from
14533 ACPI CA Core Subsystem:
14535 Fixed a problem introduced in the previous label where some of the
14536 "small" resource descriptor types were not recognized.
14538 Improved error messages for the case where an ASL Field is outside
14539 the range of the parent operation region.
14541 ASL Compiler, version X2018:
14544 Added error detection for ASL Fields that extend beyond the length
14545 of the parent operation region (only if the length of the region
14546 is known at compile time.) This includes fields that have a
14547 minimum access width that is smaller than the parent region, and
14548 individual field units that are partially or entirely beyond the
14549 extent of the parent.
14553 ------------------------------------------
14554 Summary of changes for this label: 04_27_01
14556 ACPI CA Core Subsystem:
14558 Fixed a problem where the namespace mutex could be released at the
14559 wrong time during execution of AcpiRemoveAddressSpaceHandler.
14561 Added optional thread ID output for debug traces, to simplify
14562 debugging of multiple threads. Added context switch notification
14563 when the debug code realizes that a different thread is now
14564 executing ACPI code.
14566 Some additional external data types have been prefixed with the
14567 string "ACPI_" for consistency. This may effect existing code.
14568 The data types affected are the external callback typedefs - e.g.,
14570 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
14574 Fixed an issue with the OSL semaphore implementation where a
14575 thread was waking up with an error from receiving a SIGCHLD
14578 Linux version of ACPI CA now uses the system C library for string
14579 manipulation routines instead of a local implementation.
14581 Cleaned up comments and removed TBDs.
14583 ASL Compiler, version X2017:
14585 Enhanced error detection and reporting for all file I/O
14590 Programmer Reference updated to version 1.06.
14594 ------------------------------------------
14595 Summary of changes for this label: 04_13_01
14597 ACPI CA Core Subsystem:
14599 Restructured support for BufferFields and RegionFields.
14600 BankFields support is now fully operational. All known 32-bit
14601 limitations on field sizes have been removed. Both BufferFields
14602 and (Operation) RegionFields are now supported by the same field
14605 Resource support now supports QWORD address and IO resources. The
14606 16/32/64 bit address structures and the Extended IRQ structure
14607 have been changed to properly handle Source Resource strings.
14609 A ThreadId of -1 is now used to indicate a "mutex not acquired"
14610 condition internally and must never be returned by AcpiOsThreadId.
14611 This reserved value was changed from 0 since Unix systems allow a
14616 Driver code reorganized to enhance portability
14618 Added a kernel configuration option to control ACPI_DEBUG
14620 Fixed the EC driver to honor _GLK.
14622 ASL Compiler, version X2016:
14624 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
14625 address space was set to 0, not 0x7f as it should be.
14627 ------------------------------------------
14628 Summary of changes for this label: 03_13_01
14630 ACPI CA Core Subsystem:
14632 During ACPI initialization, the _SB_._INI method is now run if
14635 Notify handler fix - notifies are deferred until the parent method
14636 completes execution. This fixes the "mutex already acquired"
14637 issue seen occasionally.
14639 Part of the "implicit conversion" rules in ACPI 2.0 have been
14640 found to cause compatibility problems with existing ASL/AML. The
14641 convert "result-to-target-type" implementation has been removed
14642 for stores to method Args and Locals. Source operand conversion
14643 is still fully implemented. Possible changes to ACPI 2.0
14644 specification pending.
14646 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
14649 Fix for compiler warnings for 64-bit compiles.
14653 /proc output aligned for easier parsing.
14655 Release-version compile problem fixed.
14657 New kernel configuration options documented in Configure.help.
14659 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
14664 Power resource driver integrated with bus manager.
14666 Fixed kernel fault during active cooling for thermal zones.
14670 The source code tree has been restructured.
14674 ------------------------------------------
14675 Summary of changes for this label: 03_02_01
14677 Linux OS Services Layer (OSL):
14679 Major revision of all Linux-specific code.
14681 Modularized all ACPI-specific drivers.
14683 Added new thermal zone and power resource drivers.
14685 Revamped /proc interface (new functionality is under /proc/acpi).
14687 New kernel configuration options.
14689 Linux known issues:
14691 New kernel configuration options not documented in Configure.help
14695 Module dependencies not currently implemented. If used, they
14696 should be loaded in this order: busmgr, power, ec, system,
14697 processor, battery, ac_adapter, button, thermal.
14699 Modules will not load if CONFIG_MODVERSION is set.
14701 IBM 600E - entering S5 may reboot instead of shutting down.
14703 IBM 600E - Sleep button may generate "Invalid <NULL> context"
14706 Some systems may fail with "execution mutex already acquired"
14709 ACPI CA Core Subsystem:
14711 Added a new OSL Interface, AcpiOsGetThreadId. This was required
14712 for the deadlock detection code. Defined to return a non-zero, 32-
14713 bit thread ID for the currently executing thread. May be a non-
14714 zero constant integer on single-thread systems.
14716 Implemented deadlock detection for internal subsystem mutexes. We
14717 may add conditional compilation for this code (debug only) later.
14719 ASL/AML Mutex object semantics are now fully supported. This
14720 includes multiple acquires/releases by owner and support for the
14722 Mutex SyncLevel parameter.
14724 A new "Force Release" mechanism automatically frees all ASL
14725 Mutexes that have been acquired but not released when a thread
14726 exits the interpreter. This forces conformance to the ACPI spec
14727 ("All mutexes must be released when an invocation exits") and
14728 prevents deadlocked ASL threads. This mechanism can be expanded
14729 (later) to monitor other resource acquisitions if OEM ASL code
14730 continues to misbehave (which it will).
14732 Several new ACPI exception codes have been added for the Mutex
14735 Recursive method calls are now allowed and supported (the ACPI
14736 spec does in fact allow recursive method calls.) The number of
14737 recursive calls is subject to the restrictions imposed by the
14738 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
14741 Implemented support for the SyncLevel parameter for control
14742 methods (ACPI 2.0 feature)
14744 Fixed a deadlock problem when multiple threads attempted to use
14747 Fixed a problem where the string length of a String package
14748 element was not always set in a package returned from
14749 AcpiEvaluateObject.
14751 Fixed a problem where the length of a String package element was
14752 not always included in the length of the overall package returned
14753 from AcpiEvaluateObject.
14755 Added external interfaces (Acpi*) to the ACPI debug memory
14756 manager. This manager keeps a list of all outstanding
14757 allocations, and can therefore detect memory leaks and attempts to
14758 free memory blocks more than once. Useful for code such as the
14759 power manager, etc. May not be appropriate for device drivers.
14760 Performance with the debug code enabled is slow.
14762 The ACPI Global Lock is now an optional hardware element.
14764 ASL Compiler Version X2015:
14766 Integrated changes to allow the compiler to be generated on
14767 multiple platforms.
14769 Linux makefile added to generate the compiler on Linux
14773 All platform-specific headers have been moved to their own
14774 subdirectory, Include/Platform.
14776 New source file added, Interpreter/ammutex.c
14778 New header file, Include/acstruct.h
14782 The programmer reference has been updated for the following new
14783 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
14785 ------------------------------------------
14786 Summary of changes for this label: 02_08_01
14788 Core ACPI CA Subsystem: Fixed a problem where an error was
14789 incorrectly returned if the return resource buffer was larger than
14790 the actual data (in the resource interfaces).
14792 References to named objects within packages are resolved to the
14794 full pathname string before packages are returned directly (via
14795 the AcpiEvaluateObject interface) or indirectly via the resource
14798 Linux OS Services Layer (OSL):
14800 Improved /proc battery interface.
14803 Added C-state debugging output and other miscellaneous fixes.
14805 ASL Compiler Version X2014:
14807 All defined method arguments can now be used as local variables,
14808 including the ones that are not actually passed in as parameters.
14809 The compiler tracks initialization of the arguments and issues an
14810 exception if they are used without prior assignment (just like
14813 The -o option now specifies a filename prefix that is used for all
14814 output files, including the AML output file. Otherwise, the
14815 default behavior is as follows: 1) the AML goes to the file
14816 specified in the DSDT. 2) all other output files use the input
14817 source filename as the base.
14819 ------------------------------------------
14820 Summary of changes for this label: 01_25_01
14822 Core ACPI CA Subsystem: Restructured the implementation of object
14823 store support within the interpreter. This includes support for
14824 the Store operator as well as any ASL operators that include a
14827 Partially implemented support for Implicit Result-to-Target
14828 conversion. This is when a result object is converted on the fly
14829 to the type of an existing target object. Completion of this
14830 support is pending further analysis of the ACPI specification
14831 concerning this matter.
14833 CPU-specific code has been removed from the subsystem (hardware
14836 New Power Management Timer functions added
14838 Linux OS Services Layer (OSL): Moved system state transition code
14839 to the core, fixed it, and modified Linux OSL accordingly.
14841 Fixed C2 and C3 latency calculations.
14844 We no longer use the compilation date for the version message on
14845 initialization, but retrieve the version from AcpiGetSystemInfo().
14847 Incorporated for fix Sony VAIO machines.
14849 Documentation: The Programmer Reference has been updated and
14853 ASL Compiler: Version X2013: Fixed a problem where the line
14854 numbering and error reporting could get out of sync in the
14855 presence of multiple include files.
14857 ------------------------------------------
14858 Summary of changes for this label: 01_15_01
14860 Core ACPI CA Subsystem:
14862 Implemented support for type conversions in the execution of the
14863 ASL Concatenate operator (The second operand is converted to
14864 match the type of the first operand before concatenation.)
14866 Support for implicit source operand conversion is partially
14867 implemented. The ASL source operand types Integer, Buffer, and
14868 String are freely interchangeable for most ASL operators and are
14869 converted by the interpreter on the fly as required. Implicit
14870 Target operand conversion (where the result is converted to the
14871 target type before storing) is not yet implemented.
14873 Support for 32-bit and 64-bit BCD integers is implemented.
14875 Problem fixed where a field read on an aligned field could cause a
14876 read past the end of the field.
14878 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
14879 does not return a value, but the caller expects one. (The ASL
14880 compiler flags this as a warning.)
14885 1. Static typechecking of all operands is implemented. This
14886 prevents the use of invalid objects (such as using a Package where
14887 an Integer is required) at compile time instead of at interpreter
14889 2. The ASL source line is printed with ALL errors and warnings.
14890 3. Bug fix for source EOF without final linefeed.
14891 4. Debug option is split into a parse trace and a namespace trace.
14892 5. Namespace output option (-n) includes initial values for
14893 integers and strings.
14894 6. Parse-only option added for quick syntax checking.
14895 7. Compiler checks for duplicate ACPI name declarations
14898 1. Relaxed typechecking to allow interchangeability between
14899 strings, integers, and buffers. These types are now converted by
14900 the interpreter at runtime.
14901 2. Compiler reports time taken by each internal subsystem in the
14905 ------------------------------------------
14906 Summary of changes for this label: 12_14_00
14910 This is the first official release of the compiler. Since the
14911 compiler requires elements of the Core Subsystem, this label
14912 synchronizes everything.
14914 ------------------------------------------
14915 Summary of changes for this label: 12_08_00
14918 Fixed a problem where named references within the ASL definition
14919 of both OperationRegions and CreateXXXFields did not work
14920 properly. The symptom was an AE_AML_OPERAND_TYPE during
14921 initialization of the region/field. This is similar (but not
14922 related internally) to the problem that was fixed in the last
14925 Implemented both 32-bit and 64-bit support for the BCD ASL
14926 functions ToBCD and FromBCD.
14928 Updated all legal headers to include "2000" in the copyright
14931 ------------------------------------------
14932 Summary of changes for this label: 12_01_00
14934 Fixed a problem where method invocations within the ASL definition
14935 of both OperationRegions and CreateXXXFields did not work
14936 properly. The symptom was an AE_AML_OPERAND_TYPE during
14937 initialization of the region/field:
14939 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
14940 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
14943 Fixed a problem where operators with more than one nested
14944 subexpression would fail. The symptoms were varied, by mostly
14945 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
14946 problem that has gone unnoticed until now.
14948 Subtract (Add (1,2), Multiply (3,4))
14950 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
14951 previous build (The prefix part of a relative path was handled
14954 Fixed a problem where Operation Region initialization failed if
14955 the operation region name was a "namepath" instead of a simple
14956 "nameseg". Symptom was an AE_NO_OPERAND error.
14958 Fixed a problem where an assignment to a local variable via the
14959 indirect RefOf mechanism only worked for the first such
14960 assignment. Subsequent assignments were ignored.
14962 ------------------------------------------
14963 Summary of changes for this label: 11_15_00
14965 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
14966 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
14967 the AML interpreter does NOT have support for the new 2.0 ASL
14968 grammar terms at this time.
14970 All ACPI hardware access is via the GAS structures in the ACPI 2.0
14973 All physical memory addresses across all platforms are now 64 bits
14974 wide. Logical address width remains dependent on the platform
14977 AcpiOsMapMemory interface changed to a 64-bit physical address.
14979 The AML interpreter integer size is now 64 bits, as per the ACPI
14982 For backwards compatibility with ACPI 1.0, ACPI tables with a
14983 revision number less than 2 use 32-bit integers only.
14985 Fixed a problem where the evaluation of OpRegion operands did not
14986 always resolve them to numbers properly.
14988 ------------------------------------------
14989 Summary of changes for this label: 10_20_00
14991 Fix for CBN_._STA issue. This fix will allow correct access to
14992 CBN_ OpRegions when the _STA returns 0x8.
14994 Support to convert ACPI constants (Ones, Zeros, One) to actual
14995 values before a package object is returned
14997 Fix for method call as predicate to if/while construct causing
14998 incorrect if/while behavior
15000 Fix for Else block package lengths sometimes calculated wrong (if
15003 Fix for Processor object length field, was always zero
15005 Table load abort if FACP sanity check fails
15007 Fix for problem with Scope(name) if name already exists
15009 Warning emitted if a named object referenced cannot be found
15010 (resolved) during method execution.
15016 ------------------------------------------
15017 Summary of changes for this label: 9_29_00
15019 New table initialization interfaces: AcpiInitializeSubsystem no
15020 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
15021 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
15022 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
15025 Note: These interface changes require changes to all existing OSDs
15027 The PCI_Config default address space handler is always installed
15028 at the root namespace object.
15030 -------------------------------------------
15031 Summary of changes for this label: 09_15_00
15033 The new initialization architecture is implemented. New
15034 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
15035 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
15037 (Namespace is automatically loaded when a table is loaded)
15039 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
15040 52 bytes to 32 bytes. There is usually one of these for every
15041 namespace object, so the memory savings is significant.
15043 Implemented just-in-time evaluation of the CreateField operators.
15045 Bug fixes for IA-64 support have been integrated.
15047 Additional code review comments have been implemented
15049 The so-called "third pass parse" has been replaced by a final walk
15050 through the namespace to initialize all operation regions (address
15051 spaces) and fields that have not yet been initialized during the
15052 execution of the various _INI and REG methods.
15054 New file - namespace/nsinit.c
15056 -------------------------------------------
15057 Summary of changes for this label: 09_01_00
15059 Namespace manager data structures have been reworked to change the
15060 primary object from a table to a single object. This has
15061 resulted in dynamic memory savings of 3X within the namespace and
15062 2X overall in the ACPI CA subsystem.
15064 Fixed problem where the call to AcpiEvFindPciRootBuses was
15065 inadvertently left commented out.
15067 Reduced the warning count when generating the source with the GCC
15070 Revision numbers added to each module header showing the
15071 SourceSafe version of the file. Please refer to this version
15072 number when giving us feedback or comments on individual modules.
15074 The main object types within the subsystem have been renamed to
15075 clarify their purpose:
15077 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
15078 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
15079 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
15081 NOTE: no changes to the initialization sequence are included in
15084 -------------------------------------------
15085 Summary of changes for this label: 08_23_00
15087 Fixed problem where TerminateControlMethod was being called
15088 multiple times per method
15090 Fixed debugger problem where single stepping caused a semaphore to
15093 Improved performance through additional parse object caching -
15094 added ACPI_EXTENDED_OP type
15096 -------------------------------------------
15097 Summary of changes for this label: 08_10_00
15099 Parser/Interpreter integration: Eliminated the creation of
15100 complete parse trees for ACPI tables and control methods.
15101 Instead, parse subtrees are created and then deleted as soon as
15102 they are processed (Either entered into the namespace or executed
15103 by the interpreter). This reduces the use of dynamic kernel
15104 memory significantly. (about 10X)
15106 Exception codes broken into classes and renumbered. Be sure to
15107 recompile all code that includes acexcep.h. Hopefully we won't
15108 have to renumber the codes again now that they are split into
15109 classes (environment, programmer, AML code, ACPI table, and
15112 Fixed some additional alignment issues in the Resource Manager
15115 Implemented semaphore tracking in the AcpiExec utility, and fixed
15116 several places where mutexes/semaphores were being unlocked
15117 without a corresponding lock operation. There are no known
15118 semaphore or mutex "leaks" at this time.
15120 Fixed the case where an ASL Return operator is used to return an
15123 -------------------------------------------
15124 Summary of changes for this label: 07_28_00
15126 Fixed a problem with the way addresses were calculated in
15127 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
15128 manifested itself when a Field was created with WordAccess or
15129 DwordAccess, but the field unit defined within the Field was less
15131 than a Word or Dword.
15133 Fixed a problem in AmlDumpOperands() module's loop to pull
15134 operands off of the operand stack to display information. The
15135 problem manifested itself as a TLB error on 64-bit systems when
15136 accessing an operand stack with two or more operands.
15138 Fixed a problem with the PCI configuration space handlers where
15139 context was getting confused between accesses. This required a
15140 change to the generic address space handler and address space
15141 setup definitions. Handlers now get both a global handler context
15142 (this is the one passed in by the user when executing
15143 AcpiInstallAddressSpaceHandler() and a specific region context
15144 that is unique to each region (For example, the _ADR, _SEG and
15145 _BBN values associated with a specific region). The generic
15146 function definitions have changed to the following:
15148 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
15149 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
15150 *HandlerContext, // This used to be void *Context void
15151 *RegionContext); // This is an additional parameter
15153 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
15154 RegionHandle, UINT32 Function, void *HandlerContext, void
15155 **RegionContext); // This used to be **ReturnContext
15157 -------------------------------------------
15158 Summary of changes for this label: 07_21_00
15160 Major file consolidation and rename. All files within the
15161 interpreter have been renamed as well as most header files. This
15162 was done to prevent collisions with existing files in the host
15163 OSs -- filenames such as "config.h" and "global.h" seem to be
15164 quite common. The VC project files have been updated. All
15165 makefiles will require modification.
15167 The parser/interpreter integration continues in Phase 5 with the
15168 implementation of a complete 2-pass parse (the AML is parsed
15169 twice) for each table; This avoids the construction of a huge
15170 parse tree and therefore reduces the amount of dynamic memory
15171 required by the subsystem. Greater use of the parse object cache
15172 means that performance is unaffected.
15174 Many comments from the two code reviews have been rolled in.
15176 The 64-bit alignment support is complete.
15178 -------------------------------------------
15179 Summary of changes for this label: 06_30_00
15181 With a nod and a tip of the hat to the technology of yesteryear,
15182 we've added support in the source code for 80 column output
15183 devices. The code is now mostly constrained to 80 columns or
15184 less to support environments and editors that 1) cannot display
15185 or print more than 80 characters on a single line, and 2) cannot
15186 disable line wrapping.
15188 A major restructuring of the namespace data structure has been
15189 completed. The result is 1) cleaner and more
15190 understandable/maintainable code, and 2) a significant reduction
15191 in the dynamic memory requirement for each named ACPI object
15194 -------------------------------------------
15195 Summary of changes for this label: 06_23_00
15197 Linux support has been added. In order to obtain approval to get
15198 the ACPI CA subsystem into the Linux kernel, we've had to make
15199 quite a few changes to the base subsystem that will affect all
15200 users (all the changes are generic and OS- independent). The
15201 effects of these global changes have been somewhat far reaching.
15202 Files have been merged and/or renamed and interfaces have been
15203 renamed. The major changes are described below.
15205 Osd* interfaces renamed to AcpiOs* to eliminate namespace
15206 pollution/confusion within our target kernels. All OSD
15207 interfaces must be modified to match the new naming convention.
15209 Files merged across the subsystem. A number of the smaller source
15210 and header files have been merged to reduce the file count and
15211 increase the density of the existing files. There are too many
15212 to list here. In general, makefiles that call out individual
15213 files will require rebuilding.
15215 Interpreter files renamed. All interpreter files now have the
15216 prefix am* instead of ie* and is*.
15218 Header files renamed: The acapi.h file is now acpixf.h. The
15219 acpiosd.h file is now acpiosxf.h. We are removing references to
15220 the acronym "API" since it is somewhat windowsy. The new name is
15221 "external interface" or xface or xf in the filenames.j
15224 All manifest constants have been forced to upper case (some were
15225 mixed case.) Also, the string "ACPI_" has been prepended to many
15226 (not all) of the constants, typedefs, and structs.
15228 The globals "DebugLevel" and "DebugLayer" have been renamed
15229 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
15231 All other globals within the subsystem are now prefixed with
15232 "AcpiGbl_" Internal procedures within the subsystem are now
15233 prefixed with "Acpi" (with only a few exceptions). The original
15234 two-letter abbreviation for the subcomponent remains after "Acpi"
15235 - for example, CmCallocate became AcpiCmCallocate.
15237 Added a source code translation/conversion utility. Used to
15238 generate the Linux source code, it can be modified to generate
15239 other types of source as well. Can also be used to cleanup
15240 existing source by removing extraneous spaces and blank lines.
15241 Found in tools/acpisrc/*
15243 OsdUnMapMemory was renamed to OsdUnmapMemory and then
15244 AcpiOsUnmapMemory. (UnMap became Unmap).
15246 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
15247 When set to one, this indicates that the caller wants to use the
15249 semaphore as a mutex, not a counting semaphore. ACPI CA uses
15250 both types. However, implementers of this call may want to use
15251 different OS primitives depending on the type of semaphore
15252 requested. For example, some operating systems provide separate
15254 "mutex" and "semaphore" interfaces - where the mutex interface is
15255 much faster because it doesn't have all the overhead of a full
15256 semaphore implementation.
15258 Fixed a deadlock problem where a method that accesses the PCI
15259 address space can block forever if it is the first access to the
15262 -------------------------------------------
15263 Summary of changes for this label: 06_02_00
15265 Support for environments that cannot handle unaligned data
15266 accesses (e.g. firmware and OS environments devoid of alignment
15267 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
15268 been added (via configurable macros) in these three areas: -
15269 Transfer of data from the raw AML byte stream is done via byte
15270 moves instead of word/dword/qword moves. - External objects are
15271 aligned within the user buffer, including package elements (sub-
15272 objects). - Conversion of name strings to UINT32 Acpi Names is now
15275 The Store operator was modified to mimic Microsoft's
15276 implementation when storing to a Buffer Field.
15278 Added a check of the BM_STS bit before entering C3.
15280 The methods subdirectory has been obsoleted and removed. A new
15281 file, cmeval.c subsumes the functionality.
15283 A 16-bit (DOS) version of AcpiExec has been developed. The
15284 makefile is under the acpiexec directory.