1 ----------------------------------------
2 18 December 2013. Summary of changes for version 20131218:
3
4 Global note: The ACPI 5.0A specification was released this month. There
5 are no changes needed for ACPICA since this release of ACPI is an
6 errata/clarification release. The specification is available at
7 acpi.info.
8
9
10 1) ACPICA kernel-resident subsystem:
11
12 Added validation of the XSDT root table if it is present. Some older
13 platforms contain an XSDT that is ill-formed or otherwise invalid (such
14 as containing some or all entries that are NULL pointers). This change
15 adds a new function to validate the XSDT before actually using it. If the
16 XSDT is found to be invalid, ACPICA will now automatically fall back to
17 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
18 ACPICA and enhanced by Lv Zheng and Bob Moore.
19
20 Added a runtime option to ignore the XSDT and force the use of the RSDT.
21 This change adds a runtime option that will force ACPICA to use the RSDT
22 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
23 requires that an XSDT be used instead of the RSDT, the XSDT has been
24 found to be corrupt or ill-formed on some machines. Lv Zheng.
25
26 Added a runtime option to favor 32-bit FADT register addresses over the
27 64-bit addresses. This change adds an option to favor 32-bit FADT
28 addresses when there is a conflict between the 32-bit and 64-bit versions
29 of the same register. The default behavior is to use the 64-bit version
30 in accordance with the ACPI specification. This can now be overridden via
31 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
32
33 During the change above, the internal "Convert FADT" and "Verify FADT"
34 functions have been merged to simplify the code, making it easier to
35 understand and maintain. ACPICA BZ 933.
36
37 Improve exception reporting and handling for GPE block installation.
38 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
39 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
40
41 Added helper macros to extract bus/segment numbers from the HEST table.
42 This change adds two macros to extract the encoded bus and segment
43 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
44 Betty Dall <betty.dall@hp.com>
45
46 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
47 by ACPICA. It is not a public macro, so it should have no effect on
48 existing OSV code. Lv Zheng.
49
50 Example Code and Data Size: These are the sizes for the OS-independent
51 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
52 debug version of the code includes the debug output trace mechanism and
53 has a much larger code and data size.
54
55 Current Release:
56 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
57 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
58 Previous Release:
59 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
60 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
61
62
63 2) iASL Compiler/Disassembler and Tools:
64
65 Disassembler: Improved pathname support for emitted External()
66 statements. This change adds full pathname support for external names
67 that have been resolved internally by the inclusion of additional ACPI
68 tables (via the iASL -e option). Without this change, the disassembler
69 can emit multiple externals for the same object, or it become confused
70 when the Scope() operator is used on an external object. Overall, greatly
71 improves the ability to actually recompile the emitted ASL code when
72 objects a referenced across multiple ACPI tables. Reported by Michael
73 Tsirkin (mst@redhat.com).
74
75 Tests/ASLTS: Updated functional control suite to execute with no errors.
76 David Box. Fixed several errors related to the testing of the interpreter
77 slack mode. Lv Zheng.
78
79 iASL: Added support to detect names that are declared within a control
80 method, but are unused (these are temporary names that are only valid
81 during the time the method is executing). A remark is issued for these
82 cases. ACPICA BZ 1022.
83
84 iASL: Added full support for the DBG2 table. Adds full disassembler,
85 table compiler, and template generator support for the DBG2 table (Debug
86 Port 2 table).
87
88 iASL: Added full support for the PCCT table, update the table definition.
89 Updates the PCCT table definition in the actbl3.h header and adds table
90 compiler and template generator support.
91
92 iASL: Added an option to emit only error messages (no warnings/remarks).
93 The -ve option will enable only error messages, warnings and remarks are
94 suppressed. This can simplify debugging when only the errors are
95 important, such as when an ACPI table is disassembled and there are many
96 warnings and remarks -- but only the actual errors are of real interest.
97
98 Example ACPICA code (source/tools/examples): Updated the example code so
99 that it builds to an actual working program, not just example code. Added
100 ACPI tables and execution of an example control method in the DSDT. Added
101 makefile support for Unix generation.
102
103 ----------------------------------------
104 15 November 2013. Summary of changes for version 20131115:
105
106 This release is available at https://acpica.org/downloads
107
108
109 1) ACPICA kernel-resident subsystem:
110
111 Resource Manager: Fixed loop termination for the "get AML length"
112 function. The loop previously had an error termination on a NULL resource
113 pointer, which can never happen since the loop simply increments a valid
114 resource pointer. This fix changes the loop to terminate with an error on
115 an invalid end-of-buffer condition. The problem can be seen as an
116 infinite loop by callers to AcpiSetCurrentResources with an invalid or
117 corrupted resource descriptor, or a resource descriptor that is missing
118 an END_TAG descriptor. Reported by Dan Carpenter
119 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
120
121 Table unload and ACPICA termination: Delete all attached data objects
122 during namespace node deletion. This fix updates namespace node deletion
123 to delete the entire list of attached objects (attached via
124 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
125 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
126
127 ACPICA termination: Added support to delete all objects attached to the
128 root namespace node. This fix deletes any and all objects that have been
129 attached to the root node via AcpiAttachData. Previously, none of these
130 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
131
132 Debug output: Do not emit the function nesting level for the in-kernel
133 build. The nesting level is really only useful during a single-thread
134 execution. Therefore, only enable this output for the AcpiExec utility.
135 Also, only emit the thread ID when executing under AcpiExec (Context
136 switches are still always detected and a message is emitted). ACPICA BZ
137 972.
138
139 Example Code and Data Size: These are the sizes for the OS-independent
140 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
141 debug version of the code includes the debug output trace mechanism and
142 has a much larger code and data size.
143
144 Current Release:
145 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
146 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
147 Previous Release:
148 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
149 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
150
151
152 2) iASL Compiler/Disassembler and Tools:
153
154 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
155 correct portable POSIX header for terminal control functions.
156
157 Disassembler: Fixed control method invocation issues related to the use
158 of the CondRefOf() operator. The problem is seen in the disassembly where
159 control method invocations may not be disassembled properly if the
160 control method name has been used previously as an argument to CondRefOf.
161 The solution is to not attempt to emit an external declaration for the
162 CondRefOf target (it is not necessary in the first place). This prevents
163 disassembler object type confusion. ACPICA BZ 988.
164
165 Unix Makefiles: Added an option to disable compiler optimizations and the
166 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
167 with optimizations (reportedly, gcc 4.4 for example). This change adds a
168 command line option for make (NOOPT) that disables all compiler
169 optimizations and the _FORTIFY_SOURCE compiler flag. The default
170 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
171 1034. Lv Zheng, Bob Moore.
172
173 Tests/ASLTS: Added options to specify individual test cases and modes.
174 This allows testers running aslts.sh to optionally specify individual
175 test modes and test cases. Also added an option to disable the forced
176 generation of the ACPICA tools from source if desired. Lv Zheng.
177
178 ----------------------------------------
179 27 September 2013. Summary of changes for version 20130927:
180
181 This release is available at https://acpica.org/downloads
182
183
184 1) ACPICA kernel-resident subsystem:
185
186 Fixed a problem with store operations to reference objects. This change
187 fixes a problem where a Store operation to an ArgX object that contained
188 a
189 reference to a field object did not complete the automatic dereference
190 and
191 then write to the actual field object. Instead, the object type of the
192 field object was inadvertently changed to match the type of the source
193 operand. The new behavior will actually write to the field object (buffer
194 field or field unit), thus matching the correct ACPI-defined behavior.
195
196 Implemented support to allow the host to redefine individual OSL
197 prototypes. This change enables the host to redefine OSL prototypes found
198 in the acpiosxf.h file. This allows the host to implement OSL interfaces
199 with a macro or inlined function. Further, it allows the host to add any
200 additional required modifiers such as __iomem, __init, __exit, etc., as
201 necessary on a per-interface basis. Enables maximum flexibility for the
202 OSL interfaces. Lv Zheng.
203
204 Hardcoded the access width for the FADT-defined reset register. The ACPI
205 specification requires the reset register width to be 8 bits. ACPICA now
206 hardcodes the width to 8 and ignores the FADT width value. This provides
207 compatibility with other ACPI implementations that have allowed BIOS code
208 with bad register width values to go unnoticed. Matthew Garett, Bob
209 Moore,
210 Lv Zheng.
211
212 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
213 used
214 in the OSL header (acpiosxf). The change modifies the position of this
215 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
216 build issues if the OSL defines the implementation of the interface to be
217 an inline stub function. Lv Zheng.
218
219 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
220 initialization interfaces. This change adds a new macro for the main init
221 and terminate external interfaces in order to support hosts that require
222 additional or different processing for these functions. Changed from
223 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
224 Zheng, Bob Moore.
225
226 Cleaned up the memory allocation macros for configurability. In the
227 common
228 case, the ACPI_ALLOCATE and related macros now resolve directly to their
229 respective AcpiOs* OSL interfaces. Two options:
230 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
231 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
232 2) For AcpiExec (and for debugging), the macros can optionally be
233 resolved
234 to the local ACPICA interfaces that track each allocation (local tracking
235 is used to immediately detect memory leaks).
236 Lv Zheng.
237
238 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
239 to predefine this macro to either TRUE or FALSE during the system build.
240
241 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
242
243 Example Code and Data Size: These are the sizes for the OS-independent
244 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
245 debug version of the code includes the debug output trace mechanism and
246 has a much larger code and data size.
247
248 Current Release:
249 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
250 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
251 Previous Release:
252 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
253 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
254
255
256 2) iASL Compiler/Disassembler and Tools:
257
258 iASL: Implemented wildcard support for the -e option. This simplifies use
259 when there are many SSDTs that must be included to resolve external
260 method
261 declarations. ACPICA BZ 1041. Example:
262 iasl -e ssdt*.dat -d dsdt.dat
263
264 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
265 adds a portable module that implements full history and limited line
266 editing for Unix and Linux systems. It does not use readline() due to
267 portability issues. Instead it uses the POSIX termio interface to put the
268 terminal in raw input mode so that the various special keys can be
269 trapped
270 (such as up/down-arrow for history support and left/right-arrow for line
271 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
272
273 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
274 one or more spaces. This provides compatible with early or different
275 versions of the AcpiDump utility. ACPICA BZ 1044.
276
277 AcpiDump: Do not ignore tables that contain only an ACPI table header.
278 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
279 no other data. This change adds support to dump these tables. Any tables
280 shorter than the length of an ACPI table header remain in error (an error
281 message is emitted). Reported by Yi Li.
282
283 Debugger: Echo actual command along with the "unknown command" message.
284
285 ----------------------------------------
286 23 August 2013. Summary of changes for version 20130823:
287
288 1) ACPICA kernel-resident subsystem:
289
290 Implemented support for host-installed System Control Interrupt (SCI)
291 handlers. Certain ACPI functionality requires the host to handle raw
292 SCIs. For example, the "SCI Doorbell" that is defined for memory power
293 state support requires the host device driver to handle SCIs to examine
294 if the doorbell has been activated. Multiple SCI handlers can be
295 installed to allow for future expansion. New external interfaces are
296 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
297 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
298
299 Operation region support: Never locally free the handler "context"
300 pointer. This change removes some dangerous code that attempts to free
301 the handler context pointer in some (rare) circumstances. The owner of
302 the handler owns this pointer and the ACPICA code should never touch it.
303 Although not seen to be an issue in any kernel, it did show up as a
304 problem (fault) under AcpiExec. Also, set the internal storage field for
305 the context pointer to zero when the region is deactivated, simply for
306 sanity. David Box. ACPICA BZ 1039.
307
308 AcpiRead: On error, do not modify the return value target location. If an
309 error happens in the middle of a split 32/32 64-bit I/O operation, do not
310 modify the target of the return value pointer. Makes the code consistent
311 with the rest of ACPICA. Bjorn Helgaas.
312
313 Example Code and Data Size: These are the sizes for the OS-independent
314 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
315 debug version of the code includes the debug output trace mechanism and
316 has a much larger code and data size.
317
318 Current Release:
319 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
320 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
321 Previous Release:
322 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
323 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
324
325
326 2) iASL Compiler/Disassembler and Tools:
327
328 AcpiDump: Implemented several new features and fixed some problems:
329 1) Added support to dump the RSDP, RSDT, and XSDT tables.
330 2) Added support for multiple table instances (SSDT, UEFI).
331 3) Added option to dump "customized" (overridden) tables (-c).
332 4) Fixed a problem where some table filenames were improperly
333 constructed.
334 5) Improved some error messages, removed some unnecessary messages.
335
336 iASL: Implemented additional support for disassembly of ACPI tables that
337 contain invocations of external control methods. The -fe<file> option
338 allows the import of a file that specifies the external methods along
339 with the required number of arguments for each -- allowing for the
340 correct disassembly of the table. This is a workaround for a limitation
341 of AML code where the disassembler often cannot determine the number of
342 arguments required for an external control method and generates incorrect
343 ASL code. See the iASL reference for details. ACPICA BZ 1030.
344
345 Debugger: Implemented a new command (paths) that displays the full
346 pathnames (namepaths) and object types of all objects in the namespace.
347 This is an alternative to the namespace command.
348
349 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
350 mechanism and any installed handlers.
351
352 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
353 This can occur if there are too many parent prefixes in a namepath (for
354 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
355
356 Application OSLs: Set the return value for the PCI read functions. These
357 functions simply return AE_OK, but should set the return value to zero
358 also. This change implements this. ACPICA BZ 1038.
359
360 Debugger: Prevent possible command line buffer overflow. Increase the
361 size of a couple of the debugger line buffers, and ensure that overflow
362 cannot happen. ACPICA BZ 1037.
363
364 iASL: Changed to abort immediately on serious errors during the parsing
365 phase. Due to the nature of ASL, there is no point in attempting to
366 compile these types of errors, and they typically end up causing a
367 cascade of hundreds of errors which obscure the original problem.
368
369 ----------------------------------------
370 25 July 2013. Summary of changes for version 20130725:
371
372 1) ACPICA kernel-resident subsystem:
373
374 Fixed a problem with the DerefOf operator where references to FieldUnits
375 and BufferFields incorrectly returned the parent object, not the actual
376 value of the object. After this change, a dereference of a FieldUnit
377 reference results in a read operation on the field to get the value, and
378 likewise, the appropriate BufferField value is extracted from the target
379 buffer.
380
381 Fixed a problem where the _WAK method could cause a fault under these
382 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
383 method returned no value. The problem is rarely seen because most kernels
384 run ACPICA in slack mode.
385
386 For the DerefOf operator, a fatal error now results if an attempt is made
387 to dereference a reference (created by the Index operator) to a NULL
388 package element. Provides compatibility with other ACPI implementations,
389 and this behavior will be added to a future version of the ACPI
390 specification.
391
392 The ACPI Power Management Timer (defined in the FADT) is now optional.
393 This provides compatibility with other ACPI implementations and will
394 appear in the next version of the ACPI specification. If there is no PM
395 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
396 zero in the FADT indicates no PM timer.
397
398 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
399 allows the host to globally enable/disable all vendor strings, all
400 feature strings, or both. Intended to be primarily used for debugging
401 purposes only. Lv Zheng.
402
403 Expose the collected _OSI data to the host via a global variable. This
404 data tracks the highest level vendor ID that has been invoked by the BIOS
405 so that the host (and potentially ACPICA itself) can change behaviors
406 based upon the age of the BIOS.
407
408 Example Code and Data Size: These are the sizes for the OS-independent
409 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
410 debug version of the code includes the debug output trace mechanism and
411 has a much larger code and data size.
412
413 Current Release:
414 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
415 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
416 Previous Release:
417 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
418 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
419
420
421 2) iASL Compiler/Disassembler and Tools:
422
423 iASL: Created the following enhancements for the -so option (create
424 offset table):
425 1)Add offsets for the last nameseg in each namepath for every supported
426 object type
427 2)Add support for Processor, Device, Thermal Zone, and Scope objects
428 3)Add the actual AML opcode for the parent object of every supported
429 object type
430 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
431
432 Disassembler: Emit all unresolved external symbols in a single block.
433 These are external references to control methods that could not be
434 resolved, and thus, the disassembler had to make a guess at the number of
435 arguments to parse.
436
437 iASL: The argument to the -T option (create table template) is now
438 optional. If not specified, the default table is a DSDT, typically the
439 most common case.
440
441 ----------------------------------------
442 26 June 2013. Summary of changes for version 20130626:
443
444 1) ACPICA kernel-resident subsystem:
445
446 Fixed an issue with runtime repair of the _CST object. Null or invalid
447 elements were not always removed properly. Lv Zheng.
448
449 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
450 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
451 the maximum number of GPEs is 1016. Use of multiple GPE block devices
452 makes the system-wide number of GPEs essentially unlimited.
453
454 Example Code and Data Size: These are the sizes for the OS-independent
455 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
456 debug version of the code includes the debug output trace mechanism and
457 has a much larger code and data size.
458
459 Current Release:
460 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
461 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
462 Previous Release:
463 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
464 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
465
466
467 2) iASL Compiler/Disassembler and Tools:
468
469 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
470 hosts. Now supports Linux, FreeBSD, and Windows.
471
472 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
473 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
474
475 iASL/Preprocessor: Implemented full support for nested
476 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
477
478 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
479 max. The original purpose of this constraint was to limit the amount of
480 debug output. However, the string function in question (UtPrintString) is
481 now used for the disassembler also, where 256 bytes is insufficient.
482 Reported by RehabMan@GitHub.
483
484 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
485 tables. ACPICA BZ 999. Lv Zheng.
486
487 iASL: Fixed a couple of error exit issues that could result in a "Could
488 not delete <file>" message during ASL compilation.
489
490 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
491 the actual signatures for these tables are "FACP" and "APIC",
492 respectively.
493
494 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
495 tables are allowed to have multiple instances.
496
497 ----------------------------------------
498 17 May 2013. Summary of changes for version 20130517:
499
500 1) ACPICA kernel-resident subsystem:
501
502 Fixed a regression introduced in version 20130328 for _INI methods. This
503 change fixes a problem introduced in 20130328 where _INI methods are no
504 longer executed properly because of a memory block that was not
505 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
506 <tomasz.nowicki@linaro.org>.
507
508 Fixed a possible problem with the new extended sleep registers in the
509 ACPI
510 5.0 FADT. Do not use these registers (even if populated) unless the HW-
511 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
512 1020. Lv Zheng.
513
514 Implemented return value repair code for _CST predefined objects: Sort
515 the
516 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
517
518 Implemented a debug-only option to disable loading of SSDTs from the
519 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
520 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
521 acglobal.h - ACPICA BZ 1005. Lv Zheng.
522
523 Fixed some issues in the ACPICA initialization and termination code:
524 Tomasz Nowicki <tomasz.nowicki@linaro.org>
525 1) Clear events initialized flag upon event component termination. ACPICA
526 BZ 1013.
527 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
528 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
529 4) Clear debug buffer global on termination to prevent possible multiple
530 delete. ACPICA BZ 1010.
531
532 Standardized all switch() blocks across the entire source base. After
533 many
534 years, different formatting for switch() had crept in. This change makes
535 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
536
537 Split some files to enhance ACPICA modularity and configurability:
538 1) Split buffer dump routines into utilities/utbuffer.c
539 2) Split internal error message routines into utilities/uterror.c
540 3) Split table print utilities into tables/tbprint.c
541 4) Split iASL command-line option processing into asloptions.c
542
543 Makefile enhancements:
544 1) Support for all new files above.
545 2) Abort make on errors from any subcomponent. Chao Guan.
546 3) Add build support for Apple Mac OS X. Liang Qi.
547
548 Example Code and Data Size: These are the sizes for the OS-independent
549 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
550 debug version of the code includes the debug output trace mechanism and
551 has a much larger code and data size.
552
553 Current Release:
554 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
555 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
556 Previous Release:
557 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
558 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
559
560
561 2) iASL Compiler/Disassembler and Tools:
562
563 New utility: Implemented an easily portable version of the acpidump
564 utility to extract ACPI tables from the system (or a file) in an ASCII
565 hex
566 dump format. The top-level code implements the various command line
567 options, file I/O, and table dump routines. To port to a new host, only
568 three functions need to be implemented to get tables -- since this
569 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
570 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
571 1) The Windows version obtains the ACPI tables from the Registry.
572 2) The Linux version is under development.
573 3) Other hosts - If an OS-dependent module is submitted, it will be
574 distributed with ACPICA.
575
576 iASL: Fixed a regression for -D preprocessor option (define symbol). A
577 restructuring/change to the initialization sequence caused this option to
578 no longer work properly.
579
580 iASL: Implemented a mechanism to disable specific warnings and remarks.
581 Adds a new command line option, "-vw <messageid> as well as "#pragma
582 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
583
584 iASL: Fix for too-strict package object validation. The package object
585 validation for return values from the predefined names is a bit too
586 strict, it does not allow names references within the package (which will
587 be resolved at runtime.) These types of references cannot be validated at
588 compile time. This change ignores named references within package objects
589 for names that return or define static packages.
590
591 Debugger: Fixed the 80-character command line limitation for the History
592 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
593
594 iASL: Added control method and package support for the -so option
595 (generates AML offset table for BIOS support.)
596
597 iASL: issue a remark if a non-serialized method creates named objects. If
598 a thread blocks within the method for any reason, and another thread
599 enters the method, the method will fail because an attempt will be made
600 to
601 create the same (named) object twice. In this case, issue a remark that
602 the method should be marked serialized. NOTE: may become a warning later.
603 ACPICA BZ 909.
604
605 ----------------------------------------
606 18 April 2013. Summary of changes for version 20130418:
607
608 1) ACPICA kernel-resident subsystem:
609
610 Fixed a possible buffer overrun during some rare but specific field unit
611 read operations. This overrun can only happen if the DSDT version is 1 --
612 meaning that all AML integers are 32 bits -- and the field length is
613 between 33 and 55 bits long. During the read, an internal buffer object
614 is
615 created for the field unit because the field is larger than an integer
616 (32
617 bits). However, in this case, the buffer will be incorrectly written
618 beyond the end because the buffer length is less than the internal
619 minimum
620 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
621 long, but a full 8 bytes will be written.
622
623 Updated the Embedded Controller "orphan" _REG method support. This refers
624 to _REG methods under the EC device that have no corresponding operation
625 region. This is allowed by the ACPI specification. This update removes a
626 dependency on the existence an ECDT table. It will execute an orphan _REG
627 method as long as the operation region handler for the EC is installed at
628 the EC device node and not the namespace root. Rui Zhang (original
629 update), Bob Moore (update/integrate).
630
631 Implemented run-time argument typechecking for all predefined ACPI names
632 (_STA, _BIF, etc.) This change performs object typechecking on all
633 incoming arguments for all predefined names executed via
634 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
635 passing correct object types as well as the correct number of arguments
636 (therefore identifying any issues immediately). Also, the ASL/namespace
637 definition of the predefined name is checked against the ACPI
638 specification for the proper argument count. Adds one new file,
639 nsarguments.c
640
641 Changed an exception code for the ASL UnLoad() operator. Changed the
642 exception code for the case where the input DdbHandle is invalid, from
643 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
644
645 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
646 global makefile. The use of this flag causes compiler errors on earlier
647 versions of GCC, so it has been removed for compatibility.
648
649 Miscellaneous cleanup:
650 1) Removed some unused/obsolete macros
651 2) Fixed a possible memory leak in the _OSI support
652 3) Removed an unused variable in the predefined name support
653 4) Windows OSL: remove obsolete reference to a memory list field
654
655 Example Code and Data Size: These are the sizes for the OS-independent
656 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
657 debug version of the code includes the debug output trace mechanism and
658 has a much larger code and data size.
659
660 Current Release:
661 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
662 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
663 Previous Release:
664 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
665 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
666
667
668 2) iASL Compiler/Disassembler and Tools:
669
670 AcpiExec: Added installation of a handler for the SystemCMOS address
671 space. This prevents control method abort if a method accesses this
672 space.
673
674 AcpiExec: Added support for multiple EC devices, and now install EC
675 operation region handler(s) at the actual EC device instead of the
676 namespace root. This reflects the typical behavior of host operating
677 systems.
678
679 AcpiExec: Updated to ensure that all operation region handlers are
680 installed before the _REG methods are executed. This prevents a _REG
681 method from aborting if it accesses an address space has no handler.
682 AcpiExec installs a handler for every possible address space.
683
684 Debugger: Enhanced the "handlers" command to display non-root handlers.
685 This change enhances the handlers command to display handlers associated
686 with individual devices throughout the namespace, in addition to the
687 currently supported display of handlers associated with the root
688 namespace
689 node.
690
691 ASL Test Suite: Several test suite errors have been identified and
692 resolved, reducing the total error count during execution. Chao Guan.
693
694 ----------------------------------------
695 28 March 2013. Summary of changes for version 20130328:
696
697 1) ACPICA kernel-resident subsystem:
698
699 Fixed several possible race conditions with the internal object reference
700 counting mechanism. Some of the external ACPICA interfaces update object
701 reference counts without holding the interpreter or namespace lock. This
702 change adds a spinlock to protect reference count updates on the internal
703 ACPICA objects. Reported by and with assistance from Andriy Gapon
704 (avg@FreeBSD.org).
705
706 FADT support: Removed an extraneous warning for very large GPE register
707 sets. This change removes a size mismatch warning if the legacy length
708 field for a GPE register set is larger than the 64-bit GAS structure can
709 accommodate. GPE register sets can be larger than the 255-bit width
710 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
711
712 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
713 return from this interface. Handles a possible timeout case if
714 ACPI_WAIT_FOREVER is modified by the host to be a value less than
715 "forever". Jung-uk Kim.
716
717 Predefined name support: Add allowed/required argument type information
718 to
719 the master predefined info table. This change adds the infrastructure to
720 enable typechecking on incoming arguments for all predefined
721 methods/objects. It does not actually contain the code that will fully
722 utilize this information, this is still under development. Also condenses
723 some duplicate code for the predefined names into a new module,
724 utilities/utpredef.c
725
726 Example Code and Data Size: These are the sizes for the OS-independent
727 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
728 debug version of the code includes the debug output trace mechanism and
729 has a much larger code and data size.
730
731 Previous Release:
732 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
733 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
734 Current Release:
735 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
736 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
737
738
739 2) iASL Compiler/Disassembler and Tools:
740
741 iASL: Implemented a new option to simplify the development of ACPI-
742 related
743 BIOS code. Adds support for a new "offset table" output file. The -so
744 option will create a C table containing the AML table offsets of various
745 named objects in the namespace so that BIOS code can modify them easily
746 at
747 boot time. This can simplify BIOS runtime code by eliminating expensive
748 searches for "magic values", enhancing boot times and adding greater
749 reliability. With assistance from Lee Hamel.
750
751 iASL: Allow additional predefined names to return zero-length packages.
752 Now, all predefined names that are defined by the ACPI specification to
753 return a "variable-length package of packages" are allowed to return a
754 zero length top-level package. This allows the BIOS to tell the host that
755 the requested feature is not supported, and supports existing BIOS/ASL
756 code and practices.
757
758 iASL: Changed the "result not used" warning to an error. This is the case
759 where an ASL operator is effectively a NOOP because the result of the
760 operation is not stored anywhere. For example:
761 Add (4, Local0)
762 There is no target (missing 3rd argument), nor is the function return
763 value used. This is potentially a very serious problem -- since the code
764 was probably intended to do something, but for whatever reason, the value
765 was not stored. Therefore, this issue has been upgraded from a warning to
766 an error.
767
768 AcpiHelp: Added allowable/required argument types to the predefined names
769 info display. This feature utilizes the recent update to the predefined
770 names table (above).
771
772 ----------------------------------------
773 14 February 2013. Summary of changes for version 20130214:
774
775 1) ACPICA Kernel-resident Subsystem:
776
777 Fixed a possible regression on some hosts: Reinstated the safe return
778 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
779 evaluated only once. Although these macros are not needed for the ACPICA
780 code itself, they are often used by ACPI-related host device drivers
781 where
782 the safe feature may be necessary.
783
784 Fixed several issues related to the ACPI 5.0 reduced hardware support
785 (SOC): Now ensure that if the platform declares itself as hardware-
786 reduced
787 via the FADT, the following functions become NOOPs (and always return
788 AE_OK) because ACPI is always enabled by definition on these machines:
789 AcpiEnable
790 AcpiDisable
791 AcpiHwGetMode
792 AcpiHwSetMode
793
794 Dynamic Object Repair: Implemented additional runtime repairs for
795 predefined name return values. Both of these repairs can simplify code in
796 the related device drivers that invoke these methods:
797 1) For the _STR and _MLS names, automatically repair/convert an ASCII
798 string to a Unicode buffer.
799 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
800 a
801 lone end tag descriptor in the following cases: A Return(0) was executed,
802 a null buffer was returned, or no object at all was returned (non-slack
803 mode only). Adds a new file, nsconvert.c
804 ACPICA BZ 998. Bob Moore, Lv Zheng.
805
806 Resource Manager: Added additional code to prevent possible infinite
807 loops
808 while traversing corrupted or ill-formed resource template buffers. Check
809 for zero-length resource descriptors in all code that loops through
810 resource templates (the length field is used to index through the
811 template). This change also hardens the external AcpiWalkResources and
812 AcpiWalkResourceBuffer interfaces.
813
814 Local Cache Manager: Enhanced the main data structure to eliminate an
815 unnecessary mechanism to access the next object in the list. Actually
816 provides a small performance enhancement for hosts that use the local
817 ACPICA cache manager. Jung-uk Kim.
818
819 Example Code and Data Size: These are the sizes for the OS-independent
820 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
821 debug version of the code includes the debug output trace mechanism and
822 has a much larger code and data size.
823
824 Previous Release:
825 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
826 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
827 Current Release:
828 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
829 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
830
831
832 2) iASL Compiler/Disassembler and Tools:
833
834 iASL/Disassembler: Fixed several issues with the definition of the ACPI
835 5.0 RASF table (RAS Feature Table). This change incorporates late changes
836 that were made to the ACPI 5.0 specification.
837
838 iASL/Disassembler: Added full support for the following new ACPI tables:
839 1) The MTMR table (MID Timer Table)
840 2) The VRTC table (Virtual Real Time Clock Table).
841 Includes header file, disassembler, table compiler, and template support
842 for both tables.
843
844 iASL: Implemented compile-time validation of package objects returned by
845 predefined names. This new feature validates static package objects
846 returned by the various predefined names defined to return packages. Both
847 object types and package lengths are validated, for both parent packages
848 and sub-packages, if any. The code is similar in structure and behavior
849 to
850 the runtime repair mechanism within the AML interpreter and uses the
851 existing predefined name information table. Adds a new file, aslprepkg.c.
852 ACPICA BZ 938.
853
854 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
855 This feature detects a binary file with a valid ACPI table header and
856 invokes the disassembler automatically. Eliminates the need to
857 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
858
859 iASL/Disassembler: Added several warnings for the case where there are
860 unresolved control methods during the disassembly. This can potentially
861 cause errors when the output file is compiled, because the disassembler
862 assumes zero method arguments in these cases (it cannot determine the
863 actual number of arguments without resolution/definition of the method).
864
865 Debugger: Added support to display all resources with a single command.
866 Invocation of the resources command with no arguments will now display
867 all
868 resources within the current namespace.
869
870 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
871 via the -e option.
872
873 ----------------------------------------
874 17 January 2013. Summary of changes for version 20130117:
875
876 1) ACPICA Kernel-resident Subsystem:
877
878 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
879 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
880 objects to return a package containing one integer, most BIOS code
881 returns
882 two integers and the previous code reflects that. However, we also need
883 to
884 support BIOS code that actually implements to the ACPI spec, and this
885 change reflects this.
886
887 Fixed two issues with the ACPI_DEBUG_PRINT macros:
888 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
889 C compilers that require this support.
890 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
891 ACPI_DEBUG is already used by many of the various hosts.
892
893 Updated all ACPICA copyrights and signons to 2013. Added the 2013
894 copyright to all module headers and signons, including the standard Linux
895 header. This affects virtually every file in the ACPICA core subsystem,
896 iASL compiler, all ACPICA utilities, and the test suites.
897
898 Example Code and Data Size: These are the sizes for the OS-independent
899 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
900 debug version of the code includes the debug output trace mechanism and
901 has a much larger code and data size.
902
903 Previous Release:
904 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
905 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
906 Current Release:
907 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
908 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
909
910
911 2) iASL Compiler/Disassembler and Tools:
912
913 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
914 prevent a possible fault on some hosts. Some C libraries modify the arg
915 pointer parameter to vfprintf making it difficult to call it twice in the
916 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
917 does not affect the Windows OSL since the Win C library does not modify
918 the arg pointer. Chao Guan, Bob Moore.
919
920 iASL: Fixed a possible infinite loop when the maximum error count is
921 reached. If an output file other than the .AML file is specified (such as
922 a listing file), and the maximum number of errors is reached, do not
923 attempt to flush data to the output file(s) as the compiler is aborting.
924 This can cause an infinite loop as the max error count code essentially
925 keeps calling itself.
926
927 iASL/Disassembler: Added an option (-in) to ignore NOOP
928 opcodes/operators.
929 Implemented for both the compiler and the disassembler. Often, the NOOP
930 opcode is used as padding for packages that are changed dynamically by
931 the
932 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
933 errors. This option causes the disassembler to ignore all NOOP opcodes
934 (0xA3), and it also causes the compiler to ignore all ASL source code
935 NOOP
936 statements as well.
937
938 Debugger: Enhanced the Sleep command to execute all sleep states. This
939 change allows Sleep to be invoked with no arguments and causes the
940 debugger to execute all of the sleep states, 0-5, automatically.
941
942 ----------------------------------------
943 20 December 2012. Summary of changes for version 20121220:
944
945 1) ACPICA Kernel-resident Subsystem:
946
947 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
948 alternate entry point for AcpiWalkResources and improves the usability of
949 the resource manager by accepting as input a buffer containing the output
950 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
951 input buffer is not deleted by this interface so that it can be used by
952 the host later. See the ACPICA reference for details.
953
954 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
955 (DSDT version < 2). The constant will be truncated and this warning
956 reflects that behavior.
957
958 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
959 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
960 both get and set the new wake bit in these descriptors, separately from
961 the existing share bit. Reported by Aaron Lu.
962
963 Interpreter: Fix Store() when an implicit conversion is not possible. For
964 example, in the cases such as a store of a string to an existing package
965 object, implement the store as a CopyObject(). This is a small departure
966 from the ACPI specification which states that the control method should
967 be
968 aborted in this case. However, the ASLTS suite depends on this behavior.
969
970 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
971 macros: check if debug output is currently enabled as soon as possible to
972 minimize performance impact if debug is in fact not enabled.
973
974 Source code restructuring: Cleanup to improve modularity. The following
975 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
976 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
977 Associated makefiles and project files have been updated.
978
979 Changed an exception code for LoadTable operator. For the case where one
980 of the input strings is too long, change the returned exception code from
981 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
982
983 Fixed a possible memory leak in dispatcher error path. On error, delete
984 the mutex object created during method mutex creation. Reported by
985 tim.gardner@canonical.com.
986
987 Example Code and Data Size: These are the sizes for the OS-independent
988 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
989 debug version of the code includes the debug output trace mechanism and
990 has a much larger code and data size.
991
992 Previous Release:
993 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
994 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
995 Current Release:
996 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
997 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
998
999
1000 2) iASL Compiler/Disassembler and Tools:
1001
1002 iASL: Disallow a method call as argument to the ObjectType ASL operator.
1003 This change tracks an errata to the ACPI 5.0 document. The AML grammar
1004 will not allow the interpreter to differentiate between a method and a
1005 method invocation when these are used as an argument to the ObjectType
1006 operator. The ACPI specification change is to disallow a method
1007 invocation
1008 (UserTerm) for the ObjectType operator.
1009
1010 Finish support for the TPM2 and CSRT tables in the headers, table
1011 compiler, and disassembler.
1012
1013 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
1014 always expires immediately if the semaphore is not available. The
1015 original
1016 code was using a relative-time timeout, but sem_timedwait requires the
1017 use
1018 of an absolute time.
1019
1020 iASL: Added a remark if the Timer() operator is used within a 32-bit
1021 table. This operator returns a 64-bit time value that will be truncated
1022 within a 32-bit table.
1023
1024 iASL Source code restructuring: Cleanup to improve modularity. The
1025 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
1026 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
1027 been updated.
1028
1029
1030 ----------------------------------------
1031 14 November 2012. Summary of changes for version 20121114:
1032
1033 1) ACPICA Kernel-resident Subsystem:
1034
1035 Implemented a performance enhancement for ACPI/AML Package objects. This
1036 change greatly increases the performance of Package objects within the
1037 interpreter. It changes the processing of reference counts for packages
1038 by
1039 optimizing for the most common case where the package sub-objects are
1040 either Integers, Strings, or Buffers. Increases the overall performance
1041 of
1042 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
1043 2X.)
1044 Chao Guan. ACPICA BZ 943.
1045
1046 Implemented and deployed common macros to extract flag bits from resource
1047 descriptors. Improves readability and maintainability of the code. Fixes
1048 a
1049 problem with the UART serial bus descriptor for the number of data bits
1050 flags (was incorrectly 2 bits, should be 3).
1051
1052 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
1053 of the macros and changed the SETx macros to the style of (destination,
1054 source). Also added ACPI_CASTx companion macros. Lv Zheng.
1055
1056 Example Code and Data Size: These are the sizes for the OS-independent
1057 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1058 debug version of the code includes the debug output trace mechanism and
1059 has a much larger code and data size.
1060
1061 Previous Release:
1062 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
1063 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1064 Current Release:
1065 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
1066 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1067
1068
1069 2) iASL Compiler/Disassembler and Tools:
1070
1071 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
1072 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
1073 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
1074
1075 Disassembler: Fixed a problem with external declaration generation. Fixes
1076 a problem where an incorrect pathname could be generated for an external
1077 declaration if the original reference to the object includes leading
1078 carats (^). ACPICA BZ 984.
1079
1080 Debugger: Completed a major update for the Disassemble<method> command.
1081 This command was out-of-date and did not properly disassemble control
1082 methods that had any reasonable complexity. This fix brings the command
1083 up
1084 to the same level as the rest of the disassembler. Adds one new file,
1085 dmdeferred.c, which is existing code that is now common with the main
1086 disassembler and the debugger disassemble command. ACPICA MZ 978.
1087
1088 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
1089 Newer versions of Bison emit this prototype, so moved the prototype out
1090 of
1091 the iASL header to where it is actually used in order to avoid a
1092 duplicate
1093 declaration.
1094
1095 iASL/Tools: Standardized use of the stream I/O functions:
1096 1) Ensure check for I/O error after every fopen/fread/fwrite
1097 2) Ensure proper order of size/count arguments for fread/fwrite
1098 3) Use test of (Actual != Requested) after all fwrite, and most fread
1099 4) Standardize I/O error messages
1100 Improves reliability and maintainability of the code. Bob Moore, Lv
1101 Zheng.
1102 ACPICA BZ 981.
1103
1104 Disassembler: Prevent duplicate External() statements. During generation
1105 of external statements, detect similar pathnames that are actually
1106 duplicates such as these:
1107 External (\ABCD)
1108 External (ABCD)
1109 Remove all leading '\' characters from pathnames during the external
1110 statement generation so that duplicates will be detected and tossed.
1111 ACPICA BZ 985.
1112
1113 Tools: Replace low-level I/O with stream I/O functions. Replace
1114 open/read/write/close with the stream I/O equivalents
1115 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
1116 Moore.
1117
1118 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
1119 name header so that AcpiXtract recognizes the output file/table.
1120
1121 iASL: Remove obsolete -2 option flag. Originally intended to force the
1122 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
1123 and the entire concept is now obsolete.
1124
1125 ----------------------------------------
1126 18 October 2012. Summary of changes for version 20121018:
1127
1128
1129 1) ACPICA Kernel-resident Subsystem:
1130
1131 Updated support for the ACPI 5.0 MPST table. Fixes some problems
1132 introduced by late changes to the table as it was added to the ACPI 5.0
1133 specification. Includes header, disassembler, and data table compiler
1134 support as well as a new version of the MPST template.
1135
1136 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
1137 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
1138 methods: _HID, _CID, and _UID.
1139
1140 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
1141 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
1142 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
1143 names for their various drivers. Affects the AcpiGetObjectInfo external
1144 interface, and other internal interfaces as well.
1145
1146 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
1147 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
1148 on machines that support non-aligned transfers. Optimizes for this case
1149 rather than using a strncpy. With assistance from Zheng Lv.
1150
1151 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
1152 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
1153
1154 Added a new debug print message for AML mutex objects that are force-
1155 released. At control method termination, any currently acquired mutex
1156 objects are force-released. Adds a new debug-only message for each one
1157 that is released.
1158
1159 Audited/updated all ACPICA return macros and the function debug depth
1160 counter: 1) Ensure that all functions that use the various TRACE macros
1161 also use the appropriate ACPICA return macros. 2) Ensure that all normal
1162 return statements surround the return expression (value) with parens to
1163 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
1164 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
1165
1166 Global source code changes/maintenance: All extra lines at the start and
1167 end of each source file have been removed for consistency. Also, within
1168 comments, all new sentences start with a single space instead of a double
1169 space, again for consistency across the code base.
1170
1171 Example Code and Data Size: These are the sizes for the OS-independent
1172 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1173 debug version of the code includes the debug output trace mechanism and
1174 has a much larger code and data size.
1175
1176 Previous Release:
1177 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
1178 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
1179 Current Release:
1180 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
1181 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1182
1183
1184 2) iASL Compiler/Disassembler and Tools:
1185
1186 AcpiExec: Improved the algorithm used for memory leak/corruption
1187 detection. Added some intelligence to the code that maintains the global
1188 list of allocated memory. The list is now ordered by allocated memory
1189 address, significantly improving performance. When running AcpiExec on
1190 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
1191 on the platform and/or the environment. Note, this performance
1192 enhancement affects the AcpiExec utility only, not the kernel-resident
1193 ACPICA code.
1194
1195 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
1196 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
1197 incorrect table offset reported for invalid opcodes. Report the original
1198 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
1199
1200 Disassembler: Enhanced the -vt option to emit the binary table data in
1201 hex format to assist with debugging.
1202
1203 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
1204 size of file structure. Colin Ian King.
1205
1206 ----------------------------------------
1207 13 September 2012. Summary of changes for version 20120913:
1208
1209
1210 1) ACPICA Kernel-resident Subsystem:
1211
1212 ACPI 5.0: Added two new notify types for the Hardware Error Notification
1213 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
1214 and
1215 MCE(6).
1216
1217 Table Manager: Merged/removed duplicate code in the root table resize
1218 functions. One function is external, the other is internal. Lv Zheng,
1219 ACPICA
1220 BZ 846.
1221
1222 Makefiles: Completely removed the obsolete "Linux" makefiles under
1223 acpica/generate/linux. These makefiles are obsolete and have been
1224 replaced
1225 by
1226 the generic unix makefiles under acpica/generate/unix.
1227
1228 Makefiles: Ensure that binary files always copied properly. Minor rule
1229 change
1230 to ensure that the final binary output files are always copied up to the
1231 appropriate binary directory (bin32 or bin64.)
1232
1233 Example Code and Data Size: These are the sizes for the OS-independent
1234 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1235 debug
1236 version of the code includes the debug output trace mechanism and has a
1237 much
1238 larger code and data size.
1239
1240 Previous Release:
1241 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
1242 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
1243 Current Release:
1244 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
1245 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
1246
1247
1248 2) iASL Compiler/Disassembler and Tools:
1249
1250 Disassembler: Fixed a possible fault during the disassembly of resource
1251 descriptors when a second parse is required because of the invocation of
1252 external control methods within the table. With assistance from
1253 adq@lidskialf.net. ACPICA BZ 976.
1254
1255 iASL: Fixed a namepath optimization problem. An error can occur if the
1256 parse
1257 node that contains the namepath to be optimized does not have a parent
1258 node
1259 that is a named object. This change fixes the problem.
1260
1261 iASL: Fixed a regression where the AML file is not deleted on errors. The
1262 AML
1263 output file should be deleted if there are any errors during the
1264 compiler.
1265 The
1266 only exception is if the -f (force output) option is used. ACPICA BZ 974.
1267
1268 iASL: Added a feature to automatically increase internal line buffer
1269 sizes.
1270 Via realloc(), automatically increase the internal line buffer sizes as
1271 necessary to support very long source code lines. The current version of
1272 the
1273 preprocessor requires a buffer long enough to contain full source code
1274 lines.
1275 This change increases the line buffer(s) if the input lines go beyond the
1276 current buffer size. This eliminates errors that occurred when a source
1277 code
1278 line was longer than the buffer.
1279
1280 iASL: Fixed a problem with constant folding in method declarations. The
1281 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
1282 if a
1283 Type3 opcode was used.
1284
1285 Debugger: Improved command help support. For incorrect argument count,
1286 display
1287 full help for the command. For help command itself, allow an argument to
1288 specify a command.
1289
1290 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
1291 errors during execution of the suite. Guan Chao.
1292
1293 ----------------------------------------
1294 16 August 2012. Summary of changes for version 20120816:
1295
1296
1297 1) ACPICA Kernel-resident Subsystem:
1298
1299 Removed all use of the deprecated _GTS and _BFS predefined methods. The
1300 _GTS
1301 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
1302 deprecated and will probably be removed from the ACPI specification.
1303 Windows
1304 does not invoke them, and reportedly never will. The final nail in the
1305 coffin
1306 is that the ACPI specification states that these methods must be run with
1307 interrupts off, which is not going to happen in a kernel interpreter.
1308 Note:
1309 Linux has removed all use of the methods also. It was discovered that
1310 invoking these functions caused failures on some machines, probably
1311 because
1312 they were never tested since Windows does not call them. Affects two
1313 external
1314 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
1315 ACPICA BZ 969.
1316
1317 Implemented support for complex bit-packed buffers returned from the _PLD
1318 (Physical Location of Device) predefined method. Adds a new external
1319 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
1320 C
1321 structure. Note: C Bitfields cannot be used for this type of predefined
1322 structure since the memory layout of individual bitfields is not defined
1323 by
1324 the C language. In addition, there are endian concerns where a compiler
1325 will
1326 change the bitfield ordering based on the machine type. The new ACPICA
1327 interface eliminates these issues, and should be called after _PLD is
1328 executed. ACPICA BZ 954.
1329
1330 Implemented a change to allow a scope change to root (via "Scope (\)")
1331 during
1332 execution of module-level ASL code (code that is executed at table load
1333 time.) Lin Ming.
1334
1335 Added the Windows8/Server2012 string for the _OSI method. This change
1336 adds
1337 a
1338 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
1339 2012.
1340
1341 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
1342 2)
1343 and CSRT (Core System Resource Table).
1344
1345 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
1346 names. This simplifies access to the buffers returned by these predefined
1347 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
1348
1349 GPE support: Removed an extraneous parameter from the various low-level
1350 internal GPE functions. Tang Feng.
1351
1352 Removed the linux makefiles from the unix packages. The generate/linux
1353 makefiles are obsolete and have been removed from the unix tarball
1354 release
1355 packages. The replacement makefiles are under generate/unix, and there is
1356 a
1357 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
1358
1359 Updates for Unix makefiles:
1360 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
1361 2) Update linker flags (move to end of command line) for AcpiExec
1362 utility.
1363 Guan Chao.
1364
1365 Split ACPICA initialization functions to new file, utxfinit.c. Split from
1366 utxface.c to improve modularity and reduce file size.
1367
1368 Example Code and Data Size: These are the sizes for the OS-independent
1369 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1370 debug version of the code includes the debug output trace mechanism and
1371 has a
1372 much larger code and data size.
1373
1374 Previous Release:
1375 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
1376 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
1377 Current Release:
1378 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
1379 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
1380
1381
1382 2) iASL Compiler/Disassembler and Tools:
1383
1384 iASL: Fixed a problem with constant folding for fixed-length constant
1385 expressions. The constant-folding code was not being invoked for constant
1386 expressions that allow the use of type 3/4/5 opcodes to generate
1387 constants
1388 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
1389 result
1390 in the generation of invalid AML bytecode. ACPICA BZ 970.
1391
1392 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
1393 apparently automatically emit some of the necessary externals. This
1394 change
1395 handles these versions in order to eliminate generation warnings.
1396
1397 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
1398
1399 Disassembler: Add support to decode _PLD buffers. The decoded buffer
1400 appears
1401 within comments in the output file.
1402
1403 Debugger: Fixed a regression with the "Threads" command where
1404 AE_BAD_PARAMETER was always returned.
1405
1406 ----------------------------------------
1407 11 July 2012. Summary of changes for version 20120711:
1408
1409 1) ACPICA Kernel-resident Subsystem:
1410
1411 Fixed a possible fault in the return package object repair code. Fixes a
1412 problem that can occur when a lone package object is wrapped with an
1413 outer
1414 package object in order to force conformance to the ACPI specification.
1415 Can
1416 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
1417 _DLM,
1418 _CSD, _PSD, _TSD.
1419
1420 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
1421 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
1422 ARB_DIS bit must be implemented in the host-dependent C3 processor power
1423 state
1424 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
1425 both
1426 Intel and other vendors. (for Intel: ICH4-M and earlier)
1427
1428 This change removes the code to disable/enable bus master arbitration
1429 during
1430 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
1431 causes
1432 resume problems on some machines. The change has been in use for over
1433 seven
1434 years within Linux.
1435
1436 Implemented two new external interfaces to support host-directed dynamic
1437 ACPI
1438 table load and unload. They are intended to simplify the host
1439 implementation
1440 of hot-plug support:
1441 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
1442 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
1443 table.
1444 See the ACPICA reference for additional details. Adds one new file,
1445 components/tables/tbxfload.c
1446
1447 Implemented and deployed two new interfaces for errors and warnings that
1448 are
1449 known to be caused by BIOS/firmware issues:
1450 AcpiBiosError: Prints "ACPI Firmware Error" message.
1451 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
1452 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
1453 table
1454 and FADT errors. Additional deployment to be completed as appropriate in
1455 the
1456 future. The associated conditional macros are ACPI_BIOS_ERROR and
1457 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
1458 ACPICA
1459 BZ
1460 843.
1461
1462 Implicit notify support: ensure that no memory allocation occurs within a
1463 critical region. This fix moves a memory allocation outside of the time
1464 that a
1465 spinlock is held. Fixes issues on systems that do not allow this
1466 behavior.
1467 Jung-uk Kim.
1468
1469 Split exception code utilities and tables into a new file,
1470 utilities/utexcep.c
1471
1472 Example Code and Data Size: These are the sizes for the OS-independent
1473 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1474 debug
1475 version of the code includes the debug output trace mechanism and has a
1476 much
1477 larger code and data size.
1478
1479 Previous Release:
1480 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
1481 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
1482 Current Release:
1483 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
1484 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
1485
1486
1487 2) iASL Compiler/Disassembler and Tools:
1488
1489 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
1490 of
1491 0. Jung-uk Kim.
1492
1493 Debugger: Enhanced the "tables" command to emit additional information
1494 about
1495 the current set of ACPI tables, including the owner ID and flags decode.
1496
1497 Debugger: Reimplemented the "unload" command to use the new
1498 AcpiUnloadParentTable external interface. This command was disable
1499 previously
1500 due to need for an unload interface.
1501
1502 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
1503 option
1504 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
1505
1506 ----------------------------------------
1507 20 June 2012. Summary of changes for version 20120620:
1508
1509
1510 1) ACPICA Kernel-resident Subsystem:
1511
1512 Implemented support to expand the "implicit notify" feature to allow
1513 multiple
1514 devices to be notified by a single GPE. This feature automatically
1515 generates a
1516 runtime device notification in the absence of a BIOS-provided GPE control
1517 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
1518 notify is
1519 provided by ACPICA for Windows compatibility, and is a workaround for
1520 BIOS
1521 AML
1522 code errors. See the description of the AcpiSetupGpeForWake interface in
1523 the
1524 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
1525
1526 Changed some comments and internal function names to simplify and ensure
1527 correctness of the Linux code translation. No functional changes.
1528
1529 Example Code and Data Size: These are the sizes for the OS-independent
1530 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1531 debug
1532 version of the code includes the debug output trace mechanism and has a
1533 much
1534 larger code and data size.
1535
1536 Previous Release:
1537 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
1538 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
1539 Current Release:
1540 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
1541 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
1542
1543
1544 2) iASL Compiler/Disassembler and Tools:
1545
1546 Disassembler: Added support to emit short, commented descriptions for the
1547 ACPI
1548 predefined names in order to improve the readability of the disassembled
1549 output. ACPICA BZ 959. Changes include:
1550 1) Emit descriptions for all standard predefined names (_INI, _STA,
1551 _PRW,
1552 etc.)
1553 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
1554 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
1555 etc.)
1556
1557 AcpiSrc: Fixed several long-standing Linux code translation issues.
1558 Argument
1559 descriptions in function headers are now translated properly to lower
1560 case
1561 and
1562 underscores. ACPICA BZ 961. Also fixes translation problems such as
1563 these:
1564 (old -> new)
1565 i_aSL -> iASL
1566 00-7_f -> 00-7F
1567 16_k -> 16K
1568 local_fADT -> local_FADT
1569 execute_oSI -> execute_OSI
1570
1571 iASL: Fixed a problem where null bytes were inadvertently emitted into
1572 some
1573 listing files.
1574
1575 iASL: Added the existing debug options to the standard help screen. There
1576 are
1577 no longer two different help screens. ACPICA BZ 957.
1578
1579 AcpiHelp: Fixed some typos in the various predefined name descriptions.
1580 Also
1581 expand some of the descriptions where appropriate.
1582
1583 iASL: Fixed the -ot option (display compile times/statistics). Was not
1584 working
1585 properly for standard output; only worked for the debug file case.
1586
1587 ----------------------------------------
1588 18 May 2012. Summary of changes for version 20120518:
1589
1590
1591 1) ACPICA Core Subsystem:
1592
1593 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
1594 defined
1595 to block until asynchronous events such as notifies and GPEs have
1596 completed.
1597 Within ACPICA, it is only called before a notify or GPE handler is
1598 removed/uninstalled. It also may be useful for the host OS within related
1599 drivers such as the Embedded Controller driver. See the ACPICA reference
1600 for
1601 additional information. ACPICA BZ 868.
1602
1603 ACPI Tables: Added a new error message for a possible overflow failure
1604 during
1605 the conversion of FADT 32-bit legacy register addresses to internal
1606 common
1607 64-
1608 bit GAS structure representation. The GAS has a one-byte "bit length"
1609 field,
1610 thus limiting the register length to 255 bits. ACPICA BZ 953.
1611
1612 Example Code and Data Size: These are the sizes for the OS-independent
1613 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1614 debug
1615 version of the code includes the debug output trace mechanism and has a
1616 much
1617 larger code and data size.
1618
1619 Previous Release:
1620 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
1621 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
1622 Current Release:
1623 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
1624 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
1625
1626
1627 2) iASL Compiler/Disassembler and Tools:
1628
1629 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
1630 macro.
1631 This keyword was added late in the ACPI 5.0 release cycle and was not
1632 implemented until now.
1633
1634 Disassembler: Added support for Operation Region externals. Adds missing
1635 support for operation regions that are defined in another table, and
1636 referenced locally via a Field or BankField ASL operator. Now generates
1637 the
1638 correct External statement.
1639
1640 Disassembler: Several additional fixes for the External() statement
1641 generation
1642 related to some ASL operators. Also, order the External() statements
1643 alphabetically in the disassembler output. Fixes the External()
1644 generation
1645 for
1646 the Create* field, Alias, and Scope operators:
1647 1) Create* buffer field operators - fix type mismatch warning on
1648 disassembly
1649 2) Alias - implement missing External support
1650 3) Scope - fix to make sure all necessary externals are emitted.
1651
1652 iASL: Improved pathname support. For include files, merge the prefix
1653 pathname
1654 with the file pathname and eliminate unnecessary components. Convert
1655 backslashes in all pathnames to forward slashes, for readability. Include
1656 file
1657 pathname changes affect both #include and Include() type operators.
1658
1659 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
1660 end
1661 of a valid line by inserting a newline and then returning the EOF during
1662 the
1663 next call to GetNextLine. Prevents the line from being ignored due to EOF
1664 condition.
1665
1666 iASL: Implemented some changes to enhance the IDE support (-vi option.)
1667 Error
1668 and Warning messages are now correctly recognized for both the source
1669 code
1670 browser and the global error and warning counts.
1671
1672 ----------------------------------------
1673 20 April 2012. Summary of changes for version 20120420:
1674
1675
1676 1) ACPICA Core Subsystem:
1677
1678 Implemented support for multiple notify handlers. This change adds
1679 support
1680 to
1681 allow multiple system and device notify handlers on Device, Thermal Zone,
1682 and
1683 Processor objects. This can simplify the host OS notification
1684 implementation.
1685 Also re-worked and restructured the entire notify support code to
1686 simplify
1687 handler installation, handler removal, notify event queuing, and notify
1688 dispatch to handler(s). Note: there can still only be two global notify
1689 handlers - one for system notifies and one for device notifies. There are
1690 no
1691 changes to the existing handler install/remove interfaces. Lin Ming, Bob
1692 Moore, Rafael Wysocki.
1693
1694 Fixed a regression in the package repair code where the object reference
1695 count was calculated incorrectly. Regression was introduced in the commit
1696 "Support to add Package wrappers".
1697
1698 Fixed a couple possible memory leaks in the AML parser, in the error
1699 recovery
1700 path. Jesper Juhl, Lin Ming.
1701
1702 Example Code and Data Size: These are the sizes for the OS-independent
1703 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1704 debug version of the code includes the debug output trace mechanism and
1705 has a
1706 much larger code and data size.
1707
1708 Previous Release:
1709 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
1710 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
1711 Current Release:
1712 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
1713 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
1714
1715
1716 2) iASL Compiler/Disassembler and Tools:
1717
1718 iASL: Fixed a problem with the resource descriptor support where the
1719 length
1720 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
1721 included in cumulative descriptor offset, resulting in incorrect values
1722 for
1723 resource tags within resource descriptors appearing after a
1724 StartDependent*
1725 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
1726
1727 iASL and Preprocessor: Implemented full support for the #line directive
1728 to
1729 correctly track original source file line numbers through the .i
1730 preprocessor
1731 output file - for error and warning messages.
1732
1733 iASL: Expand the allowable byte constants for address space IDs.
1734 Previously,
1735 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
1736 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
1737
1738 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
1739
1740 iASL: Add option to completely disable the preprocessor (-Pn).
1741
1742 iASL: Now emit all error/warning messages to standard error (stderr) by
1743 default (instead of the previous stdout).
1744
1745 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
1746 Update
1747 for resource descriptor offset fix above. Update/cleanup error output
1748 routines. Enable and send iASL errors/warnings to an error logfile
1749 (error.txt). Send all other iASL output to a logfile (compiler.txt).
1750 Fixed
1751 several extraneous "unrecognized operator" messages.
1752
1753 ----------------------------------------
1754 20 March 2012. Summary of changes for version 20120320:
1755
1756
1757 1) ACPICA Core Subsystem:
1758
1759 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
1760 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
1761 apparently
1762 does not execute these methods, and therefore these methods are often
1763 untested. It has been seen on some systems where the execution of these
1764 methods causes errors and also prevents the machine from entering S5. It
1765 is
1766 therefore suggested that host operating systems do not execute these
1767 methods
1768 by default. In the future, perhaps these methods can be optionally
1769 executed
1770 based on the age of the system and/or what is the newest version of
1771 Windows
1772 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
1773 and
1774 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
1775 Ming.
1776
1777 Fixed a problem where the length of the local/common FADT was set too
1778 early.
1779 The local FADT table length cannot be set to the common length until the
1780 original length has been examined. There is code that checks the table
1781 length
1782 and sets various fields appropriately. This can affect older machines
1783 with
1784 early FADT versions. For example, this can cause inadvertent writes to
1785 the
1786 CST_CNT register. Julian Anastasov.
1787
1788 Fixed a mapping issue related to a physical table override. Use the
1789 deferred
1790 mapping mechanism for tables loaded via the physical override OSL
1791 interface.
1792 This allows for early mapping before the virtual memory manager is
1793 available.
1794 Thomas Renninger, Bob Moore.
1795
1796 Enhanced the automatic return-object repair code: Repair a common problem
1797 with
1798 predefined methods that are defined to return a variable-length Package
1799 of
1800 sub-objects. If there is only one sub-object, some BIOS ASL code
1801 mistakenly
1802 simply returns the single object instead of a Package with one sub-
1803 object.
1804 This new support will repair this error by wrapping a Package object
1805 around
1806 the original object, creating the correct and expected Package with one
1807 sub-
1808 object. Names that can be repaired in this manner include: _ALR, _CSD,
1809 _HPX,
1810 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
1811 939.
1812
1813 Changed the exception code returned for invalid ACPI paths passed as
1814 parameters to external interfaces such as AcpiEvaluateObject. Was
1815 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
1816
1817 Example Code and Data Size: These are the sizes for the OS-independent
1818 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1819 debug
1820 version of the code includes the debug output trace mechanism and has a
1821 much
1822 larger code and data size.
1823
1824 Previous Release:
1825 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
1826 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
1827 Current Release:
1828 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
1829 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
1830
1831
1832 2) iASL Compiler/Disassembler and Tools:
1833
1834 iASL: Added the infrastructure and initial implementation of a integrated
1835 C-
1836 like preprocessor. This will simplify BIOS development process by
1837 eliminating
1838 the need for a separate preprocessing step during builds. On Windows, it
1839 also
1840 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
1841 features including full #define() macro support are still under
1842 development.
1843 These preprocessor directives are supported:
1844 #define
1845 #elif
1846 #else
1847 #endif
1848 #error
1849 #if
1850 #ifdef
1851 #ifndef
1852 #include
1853 #pragma message
1854 #undef
1855 #warning
1856 In addition, these new command line options are supported:
1857 -D <symbol> Define symbol for preprocessor use
1858 -li Create preprocessed output file (*.i)
1859 -P Preprocess only and create preprocessor output file (*.i)
1860
1861 Table Compiler: Fixed a problem where the equals operator within an
1862 expression
1863 did not work properly.
1864
1865 Updated iASL to use the current versions of Bison/Flex. Updated the
1866 Windows
1867 project file to invoke these tools from the standard location. ACPICA BZ
1868 904.
1869 Versions supported:
1870 Flex for Windows: V2.5.4
1871 Bison for Windows: V2.4.1
1872
1873 ----------------------------------------
1874 15 February 2012. Summary of changes for version 20120215:
1875
1876
1877 1) ACPICA Core Subsystem:
1878
1879 There have been some major changes to the sleep/wake support code, as
1880 described below (a - e).
1881
1882 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
1883 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
1884 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
1885 the
1886 time the _BFS method is called and the _WAK method is called. NOTE: all
1887 hosts
1888 must update their wake/resume code or else sleep/wake will not work
1889 properly.
1890 Rafael Wysocki.
1891
1892 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
1893 _WAK
1894 method. Some machines require that the GPEs are enabled before the _WAK
1895 method
1896 is executed. Thomas Renninger.
1897
1898 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
1899 bit.
1900 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
1901 to
1902 determine whether the system is rebooting or resuming. Matthew Garrett.
1903
1904 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
1905 Sleep) to
1906 match the ACPI specification requirement. Rafael Wysocki.
1907
1908 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
1909 registers within the V5 FADT. This support adds two new files:
1910 hardware/hwesleep.c implements the support for the new registers. Moved
1911 all
1912 sleep/wake external interfaces to hardware/hwxfsleep.c.
1913
1914
1915 Added a new OSL interface for ACPI table overrides,
1916 AcpiOsPhysicalTableOverride. This interface allows the host to override a
1917 table via a physical address, instead of the logical address required by
1918 AcpiOsTableOverride. This simplifies the host implementation. Initial
1919 implementation by Thomas Renninger. The ACPICA implementation creates a
1920 single
1921 shared function for table overrides that attempts both a logical and a
1922 physical override.
1923
1924 Expanded the OSL memory read/write interfaces to 64-bit data
1925 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
1926 transfer support for GAS register structures passed to AcpiRead and
1927 AcpiWrite.
1928
1929 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
1930 custom
1931 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
1932 model.
1933 See the ACPICA reference for details. ACPICA BZ 942. This option removes
1934 about
1935 10% of the code and 5% of the static data, and the following hardware
1936 ACPI
1937 features become unavailable:
1938 PM Event and Control registers
1939 SCI interrupt (and handler)
1940 Fixed Events
1941 General Purpose Events (GPEs)
1942 Global Lock
1943 ACPI PM timer
1944 FACS table (Waking vectors and Global Lock)
1945
1946 Updated the unix tarball directory structure to match the ACPICA git
1947 source
1948 tree. This ensures that the generic unix makefiles work properly (in
1949 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
1950 867.
1951
1952 Updated the return value of the _REV predefined method to integer value 5
1953 to
1954 reflect ACPI 5.0 support.
1955
1956 Moved the external ACPI PM timer interface prototypes to the public
1957 acpixf.h
1958 file where they belong.
1959
1960 Example Code and Data Size: These are the sizes for the OS-independent
1961 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1962 debug
1963 version of the code includes the debug output trace mechanism and has a
1964 much
1965 larger code and data size.
1966
1967 Previous Release:
1968 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
1969 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
1970 Current Release:
1971 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
1972 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
1973
1974
1975 2) iASL Compiler/Disassembler and Tools:
1976
1977 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
1978 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
1979 incorrectly displayed.
1980
1981 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
1982 specification.
1983
1984 ----------------------------------------
1985 11 January 2012. Summary of changes for version 20120111:
1986
1987
1988 1) ACPICA Core Subsystem:
1989
1990 Implemented a new mechanism to allow host device drivers to check for
1991 address
1992 range conflicts with ACPI Operation Regions. Both SystemMemory and
1993 SystemIO
1994 address spaces are supported. A new external interface,
1995 AcpiCheckAddressRange,
1996 allows drivers to check an address range against the ACPI namespace. See
1997 the
1998 ACPICA reference for additional details. Adds one new file,
1999 utilities/utaddress.c. Lin Ming, Bob Moore.
2000
2001 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
2002 Control
2003 and
2004 Status registers, update the ACPI 5.0 flags, and update internal data
2005 structures to handle an FADT larger than 256 bytes. The size of the ACPI
2006 5.0
2007 FADT is 268 bytes.
2008
2009 Updated all ACPICA copyrights and signons to 2012. Added the 2012
2010 copyright to
2011 all module headers and signons, including the standard Linux header. This
2012 affects virtually every file in the ACPICA core subsystem, iASL compiler,
2013 and
2014 all ACPICA utilities.
2015
2016 Example Code and Data Size: These are the sizes for the OS-independent
2017 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2018 debug
2019 version of the code includes the debug output trace mechanism and has a
2020 much
2021 larger code and data size.
2022
2023 Previous Release:
2024 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
2025 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
2026 Current Release:
2027 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
2028 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
2029
2030
2031 2) iASL Compiler/Disassembler and Tools:
2032
2033 Disassembler: fixed a problem with the automatic resource tag generation
2034 support. Fixes a problem where the resource tags are inadvertently not
2035 constructed if the table being disassembled contains external references
2036 to
2037 control methods. Moved the actual construction of the tags to after the
2038 final
2039 namespace is constructed (after 2nd parse is invoked due to external
2040 control
2041 method references.) ACPICA BZ 941.
2042
2043 Table Compiler: Make all "generic" operators caseless. These are the
2044 operators
2045 like UINT8, String, etc. Making these caseless improves ease-of-use.
2046 ACPICA BZ
2047 934.
2048
2049 ----------------------------------------
2050 23 November 2011. Summary of changes for version 20111123:
2051
2052 0) ACPI 5.0 Support:
2053
2054 This release contains full support for the ACPI 5.0 specification, as
2055 summarized below.
2056
2057 Reduced Hardware Support:
2058 -------------------------
2059
2060 This support allows for ACPI systems without the usual ACPI hardware.
2061 This
2062 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
2063 will
2064 not attempt to initialize or use any of the usual ACPI hardware. Note,
2065 when
2066 this flag is set, all of the following ACPI hardware is assumed to be not
2067 present and is not initialized or accessed:
2068
2069 General Purpose Events (GPEs)
2070 Fixed Events (PM1a/PM1b and PM Control)
2071 Power Management Timer and Console Buttons (power/sleep)
2072 Real-time Clock Alarm
2073 Global Lock
2074 System Control Interrupt (SCI)
2075 The FACS is assumed to be non-existent
2076
2077 ACPI Tables:
2078 ------------
2079
2080 All new tables and updates to existing tables are fully supported in the
2081 ACPICA headers (for use by device drivers), the disassembler, and the
2082 iASL
2083 Data Table Compiler. ACPI 5.0 defines these new tables:
2084
2085 BGRT /* Boot Graphics Resource Table */
2086 DRTM /* Dynamic Root of Trust for Measurement table */
2087 FPDT /* Firmware Performance Data Table */
2088 GTDT /* Generic Timer Description Table */
2089 MPST /* Memory Power State Table */
2090 PCCT /* Platform Communications Channel Table */
2091 PMTT /* Platform Memory Topology Table */
2092 RASF /* RAS Feature table */
2093
2094 Operation Regions/SpaceIDs:
2095 ---------------------------
2096
2097 All new operation regions are fully supported by the iASL compiler, the
2098 disassembler, and the ACPICA runtime code (for dispatch to region
2099 handlers.)
2100 The new operation region Space IDs are:
2101
2102 GeneralPurposeIo
2103 GenericSerialBus
2104
2105 Resource Descriptors:
2106 ---------------------
2107
2108 All new ASL resource descriptors are fully supported by the iASL
2109 compiler,
2110 the
2111 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
2112 (including
2113 all new predefined resource tags). New descriptors are:
2114
2115 FixedDma
2116 GpioIo
2117 GpioInt
2118 I2cSerialBus
2119 SpiSerialBus
2120 UartSerialBus
2121
2122 ASL/AML Operators, New and Modified:
2123 ------------------------------------
2124
2125 One new operator is added, the Connection operator, which is used to
2126 associate
2127 a GeneralPurposeIo or GenericSerialBus resource descriptor with
2128 individual
2129 field objects within an operation region. Several new protocols are
2130 associated
2131 with the AccessAs operator. All are fully supported by the iASL compiler,
2132 disassembler, and runtime ACPICA AML interpreter:
2133
2134 Connection // Declare Field Connection
2135 attributes
2136 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
2137 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
2138 Protocol
2139 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
2140 RawDataBuffer // Data type for Vendor Data
2141 fields
2142
2143 Predefined ASL/AML Objects:
2144 ---------------------------
2145
2146 All new predefined objects/control-methods are supported by the iASL
2147 compiler
2148 and the ACPICA runtime validation/repair (arguments and return values.)
2149 New
2150 predefined names include the following:
2151
2152 Standard Predefined Names (Objects or Control Methods):
2153 _AEI, _CLS, _CPC, _CWS, _DEP,
2154 _DLM, _EVT, _GCP, _CRT, _GWS,
2155 _HRV, _PRE, _PSE, _SRT, _SUB.
2156
2157 Resource Tags (Names used to access individual fields within resource
2158 descriptors):
2159 _DBT, _DPL, _DRS, _END, _FLC,
2160 _IOR, _LIN, _MOD, _PAR, _PHA,
2161 _PIN, _PPI, _POL, _RXL, _SLV,
2162 _SPE, _STB, _TXL, _VEN.
2163
2164 ACPICA External Interfaces:
2165 ---------------------------
2166
2167 Several new interfaces have been defined for use by ACPI-related device
2168 drivers and other host OS services:
2169
2170 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
2171 to
2172 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
2173 provided by the BIOS. They are intended to be used in conjunction with
2174 the
2175 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
2176 mutual exclusion with the AML code/interpreter.
2177
2178 AcpiGetEventResources: Returns the (formatted) resource descriptors as
2179 defined
2180 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
2181 provides
2182 resource descriptors associated with hardware-reduced platform events,
2183 similar
2184 to the AcpiGetCurrentResources interface.
2185
2186 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
2187 operation regions, information about the Connection() object and any
2188 optional
2189 length information is passed to the region handler within the Context
2190 parameter.
2191
2192 AcpiBufferToResource: This interface converts a raw AML buffer containing
2193 a
2194 resource template or resource descriptor to the ACPI_RESOURCE internal
2195 format
2196 suitable for use by device drivers. Can be used by an operation region
2197 handler
2198 to convert the Connection() buffer object into a ACPI_RESOURCE.
2199
2200 Miscellaneous/Tools/TestSuites:
2201 -------------------------------
2202
2203 Support for extended _HID names (Four alpha characters instead of three).
2204 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
2205 Support for ACPI 5.0 features in the ASLTS test suite.
2206 Fully updated documentation (ACPICA and iASL reference documents.)
2207
2208 ACPI Table Definition Language:
2209 -------------------------------
2210
2211 Support for this language was implemented and released as a subsystem of
2212 the
2213 iASL compiler in 2010. (See the iASL compiler User Guide.)
2214
2215
2216 Non-ACPI 5.0 changes for this release:
2217 --------------------------------------
2218
2219 1) ACPICA Core Subsystem:
2220
2221 Fix a problem with operation region declarations where a failure can
2222 occur
2223 if
2224 the region name and an argument that evaluates to an object (such as the
2225 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
2226 937.
2227
2228 Do not abort an ACPI table load if an invalid space ID is found within.
2229 This
2230 will be caught later if the offending method is executed. ACPICA BZ 925.
2231
2232 Fixed an issue with the FFixedHW space ID where the ID was not always
2233 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
2234
2235 Fixed a problem with the 32-bit generation of the unix-specific OSL
2236 (osunixxf.c). Lin Ming, ACPICA BZ 936.
2237
2238 Several changes made to enable generation with the GCC 4.6 compiler.
2239 ACPICA BZ
2240 935.
2241
2242 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
2243 Index/Bank
2244 field registers out-of-range.
2245
2246 2) iASL Compiler/Disassembler and Tools:
2247
2248 iASL: Implemented the __PATH__ operator, which returns the full pathname
2249 of
2250 the current source file.
2251
2252 AcpiHelp: Automatically display expanded keyword information for all ASL
2253 operators.
2254
2255 Debugger: Add "Template" command to disassemble/dump resource template
2256 buffers.
2257
2258 Added a new master script to generate and execute the ASLTS test suite.
2259 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
2260
2261 iASL: Fix problem with listing generation during processing of the
2262 Switch()
2263 operator where AML listing was disabled until the entire Switch block was
2264 completed.
2265
2266 iASL: Improve support for semicolon statement terminators. Fix "invalid
2267 character" message for some cases when the semicolon is used. Semicolons
2268 are
2269 now allowed after every <Term> grammar element. ACPICA BZ 927.
2270
2271 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
2272 923.
2273
2274 Disassembler: Fix problem with disassembly of the DataTableRegion
2275 operator
2276 where an inadvertent "Unhandled deferred opcode" message could be
2277 generated.
2278
2279 3) Example Code and Data Size
2280
2281 These are the sizes for the OS-independent acpica.lib produced by the
2282 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
2283 includes the debug output trace mechanism and has a much larger code and
2284 data
2285 size.
2286
2287 Previous Release:
2288 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2289 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2290 Current Release:
2291 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
2292 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
2293
2294 ----------------------------------------
2295 22 September 2011. Summary of changes for version 20110922:
2296
2297 0) ACPI 5.0 News:
2298
2299 Support for ACPI 5.0 in ACPICA has been underway for several months and
2300 will
2301 be released at the same time that ACPI 5.0 is officially released.
2302
2303 The ACPI 5.0 specification is on track for release in the next few
2304 months.
2305
2306 1) ACPICA Core Subsystem:
2307
2308 Fixed a problem where the maximum sleep time for the Sleep() operator was
2309 intended to be limited to two seconds, but was inadvertently limited to
2310 20
2311 seconds instead.
2312
2313 Linux and Unix makefiles: Added header file dependencies to ensure
2314 correct
2315 generation of ACPICA core code and utilities. Also simplified the
2316 makefiles
2317 considerably through the use of the vpath variable to specify search
2318 paths.
2319 ACPICA BZ 924.
2320
2321 2) iASL Compiler/Disassembler and Tools:
2322
2323 iASL: Implemented support to check the access length for all fields
2324 created to
2325 access named Resource Descriptor fields. For example, if a resource field
2326 is
2327 defined to be two bits, a warning is issued if a CreateXxxxField() is
2328 used
2329 with an incorrect bit length. This is implemented for all current
2330 resource
2331 descriptor names. ACPICA BZ 930.
2332
2333 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
2334 56-
2335 bit integers.
2336
2337 iASL: Fixed a couple of issues associated with variable-length package
2338 objects. 1) properly handle constants like One, Ones, Zero -- do not make
2339 a
2340 VAR_PACKAGE when these are used as a package length. 2) Allow the
2341 VAR_PACKAGE
2342 opcode (in addition to PACKAGE) when validating object types for
2343 predefined
2344 names.
2345
2346 iASL: Emit statistics for all output files (instead of just the ASL input
2347 and
2348 AML output). Includes listings, hex files, etc.
2349
2350 iASL: Added -G option to the table compiler to allow the compilation of
2351 custom
2352 ACPI tables. The only part of a table that is required is the standard
2353 36-
2354 byte
2355 ACPI header.
2356
2357 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
2358 headers),
2359 which also adds correct 64-bit support. Also, now all output filenames
2360 are
2361 completely lower case.
2362
2363 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
2364 loading table files. A warning is issued for any such tables. The only
2365 exception is an FADT. This also fixes a possible fault when attempting to
2366 load
2367 non-AML tables. ACPICA BZ 932.
2368
2369 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
2370 a
2371 missing table terminator could cause a fault when using the -p option.
2372
2373 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
2374 statistics.
2375
2376 3) Example Code and Data Size
2377
2378 These are the sizes for the OS-independent acpica.lib produced by the
2379 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
2380 includes the debug output trace mechanism and has a much larger code and
2381 data
2382 size.
2383
2384 Previous Release (VC 9.0):
2385 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2386 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2387 Current Release (VC 9.0):
2388 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2389 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2390
2391
2392 ----------------------------------------
2393 23 June 2011. Summary of changes for version 20110623:
2394
2395 1) ACPI CA Core Subsystem:
2396
2397 Updated the predefined name repair mechanism to not attempt repair of a
2398 _TSS
2399 return object if a _PSS object is present. We can only sort the _TSS
2400 return
2401 package if there is no _PSS within the same scope. This is because if
2402 _PSS
2403 is
2404 present, the ACPI specification dictates that the _TSS Power Dissipation
2405 field
2406 is to be ignored, and therefore some BIOSs leave garbage values in the
2407 _TSS
2408 Power field(s). In this case, it is best to just return the _TSS package
2409 as-
2410 is. Reported by, and fixed with assistance from Fenghua Yu.
2411
2412 Added an option to globally disable the control method return value
2413 validation
2414 and repair. This runtime option can be used to disable return value
2415 repair
2416 if
2417 this is causing a problem on a particular machine. Also added an option
2418 to
2419 AcpiExec (-dr) to set this disable flag.
2420
2421 All makefiles and project files: Major changes to improve generation of
2422 ACPICA
2423 tools. ACPICA BZ 912:
2424 Reduce default optimization levels to improve compatibility
2425 For Linux, add strict-aliasing=0 for gcc 4
2426 Cleanup and simplify use of command line defines
2427 Cleanup multithread library support
2428 Improve usage messages
2429
2430 Linux-specific header: update handling of THREAD_ID and pthread. For the
2431 32-
2432 bit case, improve casting to eliminate possible warnings, especially with
2433 the
2434 acpica tools.
2435
2436 Example Code and Data Size: These are the sizes for the OS-independent
2437 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2438 debug
2439 version of the code includes the debug output trace mechanism and has a
2440 much
2441 larger code and data size.
2442
2443 Previous Release (VC 9.0):
2444 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
2445 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2446 Current Release (VC 9.0):
2447 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2448 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2449
2450 2) iASL Compiler/Disassembler and Tools:
2451
2452 With this release, a new utility named "acpihelp" has been added to the
2453 ACPICA
2454 package. This utility summarizes the ACPI specification chapters for the
2455 ASL
2456 and AML languages. It generates under Linux/Unix as well as Windows, and
2457 provides the following functionality:
2458 Find/display ASL operator(s) -- with description and syntax.
2459 Find/display ASL keyword(s) -- with exact spelling and descriptions.
2460 Find/display ACPI predefined name(s) -- with description, number
2461 of arguments, and the return value data type.
2462 Find/display AML opcode name(s) -- with opcode, arguments, and
2463 grammar.
2464 Decode/display AML opcode -- with opcode name, arguments, and
2465 grammar.
2466
2467 Service Layers: Make multi-thread support configurable. Conditionally
2468 compile
2469 the multi-thread support so that threading libraries will not be linked
2470 if
2471 not
2472 necessary. The only tool that requires multi-thread support is AcpiExec.
2473
2474 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
2475 of
2476 Bison appear to want the interface to yyerror to be a const char * (or at
2477 least this is a problem when generating iASL on some systems.) ACPICA BZ
2478 923
2479 Pierre Lejeune.
2480
2481 Tools: Fix for systems where O_BINARY is not defined. Only used for
2482 Windows
2483 versions of the tools.
2484
2485 ----------------------------------------
2486 27 May 2011. Summary of changes for version 20110527:
2487
2488 1) ACPI CA Core Subsystem:
2489
2490 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
2491 table
2492 signature. Now, only allow SSDT, OEMx, and a null signature. History:
2493 1) Originally, we checked the table signature for "SSDT" or "PSDT".
2494 (PSDT is now obsolete.)
2495 2) We added support for OEMx tables, signature "OEM" plus a fourth
2496 "don't care" character.
2497 3) Valid tables were encountered with a null signature, so we just
2498 gave up on validating the signature, (05/2008).
2499 4) We encountered non-AML tables such as the MADT, which caused
2500 interpreter errors and kernel faults. So now, we once again allow
2501 only SSDT, OEMx, and now, also a null signature. (05/2011).
2502
2503 Added the missing _TDL predefined name to the global name list in order
2504 to
2505 enable validation. Affects both the core ACPICA code and the iASL
2506 compiler.
2507
2508 Example Code and Data Size: These are the sizes for the OS-independent
2509 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2510 debug
2511 version of the code includes the debug output trace mechanism and has a
2512 much
2513 larger code and data size.
2514
2515 Previous Release (VC 9.0):
2516 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
2517 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
2518 Current Release (VC 9.0):
2519 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
2520 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2521
2522 2) iASL Compiler/Disassembler and Tools:
2523
2524 Debugger/AcpiExec: Implemented support for "complex" method arguments on
2525 the
2526 debugger command line. This adds support beyond simple integers --
2527 including
2528 Strings, Buffers, and Packages. Includes support for nested packages.
2529 Increased the default command line buffer size to accommodate these
2530 arguments.
2531 See the ACPICA reference for details and syntax. ACPICA BZ 917.
2532
2533 Debugger/AcpiExec: Implemented support for "default" method arguments for
2534 the
2535 Execute/Debug command. Now, the debugger will always invoke a control
2536 method
2537 with the required number of arguments -- even if the command line
2538 specifies
2539 none or insufficient arguments. It uses default integer values for any
2540 missing
2541 arguments. Also fixes a bug where only six method arguments maximum were
2542 supported instead of the required seven.
2543
2544 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
2545 and
2546 also return status in order to prevent buffer overruns. See the ACPICA
2547 reference for details and syntax. ACPICA BZ 921
2548
2549 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
2550 makefiles to simplify support for the two different but similar parser
2551 generators, bison and yacc.
2552
2553 Updated the generic unix makefile for gcc 4. The default gcc version is
2554 now
2555 expected to be 4 or greater, since options specific to gcc 4 are used.
2556
2557 ----------------------------------------
2558 13 April 2011. Summary of changes for version 20110413:
2559
2560 1) ACPI CA Core Subsystem:
2561
2562 Implemented support to execute a so-called "orphan" _REG method under the
2563 EC
2564 device. This change will force the execution of a _REG method underneath
2565 the
2566 EC
2567 device even if there is no corresponding operation region of type
2568 EmbeddedControl. Fixes a problem seen on some machines and apparently is
2569 compatible with Windows behavior. ACPICA BZ 875.
2570
2571 Added more predefined methods that are eligible for automatic NULL
2572 package
2573 element removal. This change adds another group of predefined names to
2574 the
2575 list
2576 of names that can be repaired by having NULL package elements dynamically
2577 removed. This group are those methods that return a single variable-
2578 length
2579 package containing simple data types such as integers, buffers, strings.
2580 This
2581 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
2582 _PSL,
2583 _Sx,
2584 and _TZD. ACPICA BZ 914.
2585
2586 Split and segregated all internal global lock functions to a new file,
2587 evglock.c.
2588
2589 Updated internal address SpaceID for DataTable regions. Moved this
2590 internal
2591 space
2592 id in preparation for ACPI 5.0 changes that will include some new space
2593 IDs.
2594 This
2595 change should not affect user/host code.
2596
2597 Example Code and Data Size: These are the sizes for the OS-independent
2598 acpica.lib
2599 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
2600 version of
2601 the code includes the debug output trace mechanism and has a much larger
2602 code
2603 and
2604 data size.
2605
2606 Previous Release (VC 9.0):
2607 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
2608 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
2609 Current Release (VC 9.0):
2610 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
2611 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
2612
2613 2) iASL Compiler/Disassembler and Tools:
2614
2615 iASL/DTC: Major update for new grammar features. Allow generic data types
2616 in
2617 custom ACPI tables. Field names are now optional. Any line can be split
2618 to
2619 multiple lines using the continuation char (\). Large buffers now use
2620 line-
2621 continuation character(s) and no colon on the continuation lines. See the
2622 grammar
2623 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
2624 Moore.
2625
2626 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
2627 statements.
2628 Since the parser stuffs a "zero" as the return value for these statements
2629 (due
2630 to
2631 the underlying AML grammar), they were seen as "return with value" by the
2632 iASL
2633 semantic checking. They are now seen correctly as "null" return
2634 statements.
2635
2636 iASL: Check if a_REG declaration has a corresponding Operation Region.
2637 Adds a
2638 check for each _REG to ensure that there is in fact a corresponding
2639 operation
2640 region declaration in the same scope. If not, the _REG method is not very
2641 useful
2642 since it probably won't be executed. ACPICA BZ 915.
2643
2644 iASL/DTC: Finish support for expression evaluation. Added a new
2645 expression
2646 parser
2647 that implements c-style operator precedence and parenthesization. ACPICA
2648 bugzilla
2649 908.
2650
2651 Disassembler/DTC: Remove support for () and <> style comments in data
2652 tables.
2653 Now
2654 that DTC has full expression support, we don't want to have comment
2655 strings
2656 that
2657 start with a parentheses or a less-than symbol. Now, only the standard /*
2658 and
2659 //
2660 comments are supported, as well as the bracket [] comments.
2661
2662 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
2663 "unusual"
2664 headers in the acpidump file. Update the header validation to support
2665 these
2666 tables. Problem introduced in previous AcpiXtract version in the change
2667 to
2668 support "wrong checksum" error messages emitted by acpidump utility.
2669
2670 iASL: Add a * option to generate all template files (as a synonym for
2671 ALL)
2672 as
2673 in
2674 "iasl -T *" or "iasl -T ALL".
2675
2676 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
2677 completely
2678 abort the compiler on "fatal" errors, simply should abort the current
2679 compile.
2680 This allows multiple compiles with a single (possibly wildcard) compiler
2681 invocation.
2682
2683 ----------------------------------------
2684 16 March 2011. Summary of changes for version 20110316:
2685
2686 1) ACPI CA Core Subsystem:
2687
2688 Fixed a problem caused by a _PRW method appearing at the namespace root
2689 scope
2690 during the setup of wake GPEs. A fault could occur if a _PRW directly
2691 under
2692 the
2693 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
2694
2695 Implemented support for "spurious" Global Lock interrupts. On some
2696 systems, a
2697 global lock interrupt can occur without the pending flag being set. Upon
2698 a
2699 GL
2700 interrupt, we now ensure that a thread is actually waiting for the lock
2701 before
2702 signaling GL availability. Rafael Wysocki, Bob Moore.
2703
2704 Example Code and Data Size: These are the sizes for the OS-independent
2705 acpica.lib
2706 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
2707 version of
2708 the code includes the debug output trace mechanism and has a much larger
2709 code
2710 and
2711 data size.
2712
2713 Previous Release (VC 9.0):
2714 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
2715 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
2716 Current Release (VC 9.0):
2717 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
2718 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
2719
2720 2) iASL Compiler/Disassembler and Tools:
2721
2722 Implemented full support for the "SLIC" ACPI table. Includes support in
2723 the
2724 header files, disassembler, table compiler, and template generator. Bob
2725 Moore,
2726 Lin Ming.
2727
2728 AcpiXtract: Correctly handle embedded comments and messages from
2729 AcpiDump.
2730 Apparently some or all versions of acpidump will occasionally emit a
2731 comment
2732 like
2733 "Wrong checksum", etc., into the dump file. This was causing problems for
2734 AcpiXtract. ACPICA BZ 905.
2735
2736 iASL: Fix the Linux makefile by removing an inadvertent double file
2737 inclusion.
2738 ACPICA BZ 913.
2739
2740 AcpiExec: Update installation of operation region handlers. Install one
2741 handler
2742 for a user-defined address space. This is used by the ASL test suite
2743 (ASLTS).
2744
2745 ----------------------------------------
2746 11 February 2011. Summary of changes for version 20110211:
2747
2748 1) ACPI CA Core Subsystem:
2749
2750 Added a mechanism to defer _REG methods for some early-installed
2751 handlers.
2752 Most user handlers should be installed before call to
2753 AcpiEnableSubsystem.
2754 However, Event handlers and region handlers should be installed after
2755 AcpiInitializeObjects. Override handlers for the "default" regions should
2756 be
2757 installed early, however. This change executes all _REG methods for the
2758 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
2759 chicken/egg issues between them. ACPICA BZ 848.
2760
2761 Implemented an optimization for GPE detection. This optimization will
2762 simply
2763 ignore GPE registers that contain no enabled GPEs -- there is no need to
2764 read the register since this information is available internally. This
2765 becomes more important on machines with a large GPE space. ACPICA
2766 bugzilla
2767 884. Lin Ming. Suggestion from Joe Liu.
2768
2769 Removed all use of the highly unreliable FADT revision field. The
2770 revision
2771 number in the FADT has been found to be completely unreliable and cannot
2772 be
2773 trusted. Only the actual table length can be used to infer the version.
2774 This
2775 change updates the ACPICA core and the disassembler so that both no
2776 longer
2777 even look at the FADT version and instead depend solely upon the FADT
2778 length.
2779
2780 Fix an unresolved name issue for the no-debug and no-error-message source
2781 generation cases. The _AcpiModuleName was left undefined in these cases,
2782 but
2783 it is actually needed as a parameter to some interfaces. Define
2784 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
2785
2786 Split several large files (makefiles and project files updated)
2787 utglobal.c -> utdecode.c
2788 dbcomds.c -> dbmethod.c dbnames.c
2789 dsopcode.c -> dsargs.c dscontrol.c
2790 dsload.c -> dsload2.c
2791 aslanalyze.c -> aslbtypes.c aslwalks.c
2792
2793 Example Code and Data Size: These are the sizes for the OS-independent
2794 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2795 debug version of the code includes the debug output trace mechanism and
2796 has
2797 a much larger code and data size.
2798
2799 Previous Release (VC 9.0):
2800 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
2801 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
2802 Current Release (VC 9.0):
2803 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
2804 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
2805
2806 2) iASL Compiler/Disassembler and Tools:
2807
2808 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
2809 These are useful C-style macros with the standard definitions. ACPICA
2810 bugzilla 898.
2811
2812 iASL/DTC: Added support for integer expressions and labels. Support for
2813 full
2814 expressions for all integer fields in all ACPI tables. Support for labels
2815 in
2816 "generic" portions of tables such as UEFI. See the iASL reference manual.
2817
2818 Debugger: Added a command to display the status of global handlers. The
2819 "handlers" command will display op region, fixed event, and miscellaneous
2820 global handlers. installation status -- and for op regions, whether
2821 default
2822 or user-installed handler will be used.
2823
2824 iASL: Warn if reserved method incorrectly returns a value. Many
2825 predefined
2826 names are defined such that they do not return a value. If implemented as
2827 a
2828 method, issue a warning if such a name explicitly returns a value. ACPICA
2829 Bugzilla 855.
2830
2831 iASL: Added detection of GPE method name conflicts. Detects a conflict
2832 where
2833 there are two GPE methods of the form _Lxy and _Exy in the same scope.
2834 (For
2835 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
2836
2837 iASL/DTC: Fixed a couple input scanner issues with comments and line
2838 numbers. Comment remover could get confused and miss a comment ending.
2839 Fixed
2840 a problem with line counter maintenance.
2841
2842 iASL/DTC: Reduced the severity of some errors from fatal to error. There
2843 is
2844 no need to abort on simple errors within a field definition.
2845
2846 Debugger: Simplified the output of the help command. All help output now
2847 in
2848 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
2849
2850 ----------------------------------------
2851 12 January 2011. Summary of changes for version 20110112:
2852
2853 1) ACPI CA Core Subsystem:
2854
2855 Fixed a race condition between method execution and namespace walks that
2856 can
2857 possibly cause a fault. The problem was apparently introduced in version
2858 20100528 as a result of a performance optimization that reduces the
2859 number
2860 of
2861 namespace walks upon method exit by using the delete_namespace_subtree
2862 function instead of the delete_namespace_by_owner function used
2863 previously.
2864 Bug is a missing namespace lock in the delete_namespace_subtree function.
2865 dana.myers@oracle.com
2866
2867 Fixed several issues and a possible fault with the automatic "serialized"
2868 method support. History: This support changes a method to "serialized" on
2869 the
2870 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
2871 possibility that it cannot handle reentrancy. This fix repairs a couple
2872 of
2873 issues seen in the field, especially on machines with many cores:
2874
2875 1) Delete method children only upon the exit of the last thread,
2876 so as to not delete objects out from under other running threads
2877 (and possibly causing a fault.)
2878 2) Set the "serialized" bit for the method only upon the exit of the
2879 Last thread, so as to not cause deadlock when running threads
2880 attempt to exit.
2881 3) Cleanup the use of the AML "MethodFlags" and internal method flags
2882 so that there is no longer any confusion between the two.
2883
2884 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
2885
2886 Debugger: Now lock the namespace for duration of a namespace dump.
2887 Prevents
2888 issues if the namespace is changing dynamically underneath the debugger.
2889 Especially affects temporary namespace nodes, since the debugger displays
2890 these also.
2891
2892 Updated the ordering of include files. The ACPICA headers should appear
2893 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
2894 set
2895 any necessary compiler-specific defines, etc. Affects the ACPI-related
2896 tools
2897 and utilities.
2898
2899 Updated all ACPICA copyrights and signons to 2011. Added the 2011
2900 copyright
2901 to all module headers and signons, including the Linux header. This
2902 affects
2903 virtually every file in the ACPICA core subsystem, iASL compiler, and all
2904 utilities.
2905
2906 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
2907 project files for VC++ 6.0 are now obsolete. New project files can be
2908 found
2909 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
2910 details.
2911
2912 Example Code and Data Size: These are the sizes for the OS-independent
2913 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2914 debug version of the code includes the debug output trace mechanism and
2915 has a
2916 much larger code and data size.
2917
2918 Previous Release (VC 6.0):
2919 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
2920 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
2921 Current Release (VC 9.0):
2922 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
2923 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
2924
2925 2) iASL Compiler/Disassembler and Tools:
2926
2927 iASL: Added generic data types to the Data Table compiler. Add "generic"
2928 data
2929 types such as UINT32, String, Unicode, etc., to simplify the generation
2930 of
2931 platform-defined tables such as UEFI. Lin Ming.
2932
2933 iASL: Added listing support for the Data Table Compiler. Adds listing
2934 support
2935 (-l) to display actual binary output for each line of input code.
2936
2937 ----------------------------------------
2938 09 December 2010. Summary of changes for version 20101209:
2939
2940 1) ACPI CA Core Subsystem:
2941
2942 Completed the major overhaul of the GPE support code that was begun in
2943 July
2944 2010. Major features include: removal of _PRW execution in ACPICA (host
2945 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
2946 changes to existing interfaces, simplification of GPE handler operation,
2947 and
2948 a handful of new interfaces:
2949
2950 AcpiUpdateAllGpes
2951 AcpiFinishGpe
2952 AcpiSetupGpeForWake
2953 AcpiSetGpeWakeMask
2954 One new file, evxfgpe.c to consolidate all external GPE interfaces.
2955
2956 See the ACPICA Programmer Reference for full details and programming
2957 information. See the new section 4.4 "General Purpose Event (GPE)
2958 Support"
2959 for a full overview, and section 8.7 "ACPI General Purpose Event
2960 Management"
2961 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
2962 Ming,
2963 Bob Moore, Rafael Wysocki.
2964
2965 Implemented a new GPE feature for Windows compatibility, the "Implicit
2966 Wake
2967 GPE Notify". This feature will automatically issue a Notify(2) on a
2968 device
2969 when a Wake GPE is received if there is no corresponding GPE method or
2970 handler. ACPICA BZ 870.
2971
2972 Fixed a problem with the Scope() operator during table parse and load
2973 phase.
2974 During load phase (table load or method execution), the scope operator
2975 should
2976 not enter the target into the namespace. Instead, it should open a new
2977 scope
2978 at the target location. Linux BZ 19462, ACPICA BZ 882.
2979
2980 Example Code and Data Size: These are the sizes for the OS-independent
2981 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2982 debug version of the code includes the debug output trace mechanism and
2983 has a
2984 much larger code and data size.
2985
2986 Previous Release:
2987 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
2988 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
2989 Current Release:
2990 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
2991 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
2992
2993 2) iASL Compiler/Disassembler and Tools:
2994
2995 iASL: Relax the alphanumeric restriction on _CID strings. These strings
2996 are
2997 "bus-specific" per the ACPI specification, and therefore any characters
2998 are
2999 acceptable. The only checks that can be performed are for a null string
3000 and
3001 perhaps for a leading asterisk. ACPICA BZ 886.
3002
3003 iASL: Fixed a problem where a syntax error that caused a premature EOF
3004 condition on the source file emitted a very confusing error message. The
3005 premature EOF is now detected correctly. ACPICA BZ 891.
3006
3007 Disassembler: Decode the AccessSize within a Generic Address Structure
3008 (byte
3009 access, word access, etc.) Note, this field does not allow arbitrary bit
3010 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
3011
3012 New: AcpiNames utility - Example namespace dump utility. Shows an example
3013 of
3014 ACPICA configuration for a minimal namespace dump utility. Uses table and
3015 namespace managers, but no AML interpreter. Does not add any
3016 functionality
3017 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
3018 partition and configure ACPICA. ACPICA BZ 883.
3019
3020 AML Debugger: Increased the debugger buffer size for method return
3021 objects.
3022 Was 4K, increased to 16K. Also enhanced error messages for debugger
3023 method
3024 execution, including the buffer overflow case.
3025
3026 ----------------------------------------
3027 13 October 2010. Summary of changes for version 20101013:
3028
3029 1) ACPI CA Core Subsystem:
3030
3031 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
3032 now
3033 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
3034 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
3035
3036 Changed the type of the predefined namespace object _TZ from ThermalZone
3037 to
3038 Device. This was found to be confusing to the host software that
3039 processes
3040 the various thermal zones, since _TZ is not really a ThermalZone.
3041 However,
3042 a
3043 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
3044 Zhang.
3045
3046 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
3047 string is "Windows 2006 SP2".
3048
3049 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
3050 nsrepair
3051 code automatically repairs _HID-related strings, this type of code is no
3052 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
3053 878.
3054
3055 Example Code and Data Size: These are the sizes for the OS-independent
3056 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3057 debug version of the code includes the debug output trace mechanism and
3058 has a
3059 much larger code and data size.
3060
3061 Previous Release:
3062 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3063 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3064 Current Release:
3065 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3066 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3067
3068 2) iASL Compiler/Disassembler and Tools:
3069
3070 iASL: Implemented additional compile-time validation for _HID strings.
3071 The
3072 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
3073 length
3074 of
3075 the string must be exactly seven or eight characters. For both _HID and
3076 _CID
3077 strings, all characters must be alphanumeric. ACPICA BZ 874.
3078
3079 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
3080 descriptors that are mostly or all zeros, with the expectation that they
3081 will
3082 be filled in at runtime. iASL now allows this as long as there is a
3083 "resource
3084 tag" (name) associated with the descriptor, which gives the ASL a handle
3085 needed to modify the descriptor. ACPICA BZ 873.
3086
3087 Added single-thread support to the generic Unix application OSL.
3088 Primarily
3089 for iASL support, this change removes the use of semaphores in the
3090 single-
3091 threaded ACPICA tools/applications - increasing performance. The
3092 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
3093 option. ACPICA BZ 879.
3094
3095 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
3096 support
3097 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
3098
3099 iASL: Moved all compiler messages to a new file, aslmessages.h.
3100
3101 ----------------------------------------
3102 15 September 2010. Summary of changes for version 20100915:
3103
3104 1) ACPI CA Core Subsystem:
3105
3106 Removed the AcpiOsDerivePciId OSL interface. The various host
3107 implementations
3108 of this function were not OS-dependent and are now obsolete and can be
3109 removed from all host OSLs. This function has been replaced by
3110 AcpiHwDerivePciId, which is now part of the ACPICA core code.
3111 AcpiHwDerivePciId has been implemented without recursion. Adds one new
3112 module, hwpci.c. ACPICA BZ 857.
3113
3114 Implemented a dynamic repair for _HID and _CID strings. The following
3115 problems are now repaired at runtime: 1) Remove a leading asterisk in the
3116 string, and 2) the entire string is uppercased. Both repairs are in
3117 accordance with the ACPI specification and will simplify host driver
3118 code.
3119 ACPICA BZ 871.
3120
3121 The ACPI_THREAD_ID type is no longer configurable, internally it is now
3122 always UINT64. This simplifies the ACPICA code, especially any printf
3123 output.
3124 UINT64 is the only common data type for all thread_id types across all
3125 operating systems. It is now up to the host OSL to cast the native
3126 thread_id
3127 type to UINT64 before returning the value to ACPICA (via
3128 AcpiOsGetThreadId).
3129 Lin Ming, Bob Moore.
3130
3131 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
3132 "inline"
3133 keyword is not standard across compilers, and this type allows inline to
3134 be
3135 configured on a per-compiler basis. Lin Ming.
3136
3137 Made the system global AcpiGbl_SystemAwakeAndRunning publically
3138 available.
3139 Added an extern for this boolean in acpixf.h. Some hosts utilize this
3140 value
3141 during suspend/restore operations. ACPICA BZ 869.
3142
3143 All code that implements error/warning messages with the "ACPI:" prefix
3144 has
3145 been moved to a new module, utxferror.c.
3146
3147 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
3148 it
3149 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
3150
3151 Example Code and Data Size: These are the sizes for the OS-independent
3152 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3153 debug version of the code includes the debug output trace mechanism and
3154 has a
3155 much larger code and data size.
3156
3157 Previous Release:
3158 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
3159 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
3160 Current Release:
3161 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3162 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3163
3164 2) iASL Compiler/Disassembler and Tools:
3165
3166 iASL/Disassembler: Write ACPI errors to stderr instead of the output
3167 file.
3168 This keeps the output files free of random error messages that may
3169 originate
3170 from within the namespace/interpreter code. Used this opportunity to
3171 merge
3172 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
3173 866. Lin Ming, Bob Moore.
3174
3175 Tools: update some printfs for ansi warnings on size_t. Handle width
3176 change
3177 of size_t on 32-bit versus 64-bit generations. Lin Ming.
3178
3179 ----------------------------------------
3180 06 August 2010. Summary of changes for version 20100806:
3181
3182 1) ACPI CA Core Subsystem:
3183
3184 Designed and implemented a new host interface to the _OSI support code.
3185 This
3186 will allow the host to dynamically add or remove multiple _OSI strings,
3187 as
3188 well as install an optional handler that is called for each _OSI
3189 invocation.
3190 Also added a new AML debugger command, 'osi' to display and modify the
3191 global
3192 _OSI string table, and test support in the AcpiExec utility. See the
3193 ACPICA
3194 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
3195 New Functions:
3196 AcpiInstallInterface - Add an _OSI string.
3197 AcpiRemoveInterface - Delete an _OSI string.
3198 AcpiInstallInterfaceHandler - Install optional _OSI handler.
3199 Obsolete Functions:
3200 AcpiOsValidateInterface - no longer used.
3201 New Files:
3202 source/components/utilities/utosi.c
3203
3204 Re-introduced the support to enable multi-byte transfers for Embedded
3205 Controller (EC) operation regions. A reported problem was found to be a
3206 bug
3207 in the host OS, not in the multi-byte support. Previously, the maximum
3208 data
3209 size passed to the EC operation region handler was a single byte. There
3210 are
3211 often EC Fields larger than one byte that need to be transferred, and it
3212 is
3213 useful for the EC driver to lock these as a single transaction. This
3214 change
3215 enables single transfers larger than 8 bits. This effectively changes the
3216 access to the EC space from ByteAcc to AnyAcc, and will probably require
3217 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
3218 bit
3219 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
3220
3221 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
3222 prototype in acpiosxf.h had the output value pointer as a (void *).
3223 It should be a (UINT64 *). This may affect some host OSL code.
3224
3225 Fixed a couple problems with the recently modified Linux makefiles for
3226 iASL
3227 and AcpiExec. These new makefiles place the generated object files in the
3228 local directory so that there can be no collisions between the files that
3229 are
3230 shared between them that are compiled with different options.
3231
3232 Example Code and Data Size: These are the sizes for the OS-independent
3233 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3234 debug version of the code includes the debug output trace mechanism and
3235 has a
3236 much larger code and data size.
3237
3238 Previous Release:
3239 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3240 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
3241 Current Release:
3242 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
3243 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
3244
3245 2) iASL Compiler/Disassembler and Tools:
3246
3247 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
3248 the
3249 namespace from and disassemble an entire group of AML files. Useful for
3250 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
3251 and
3252 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
3253
3254 iASL: Allow multiple invocations of -e option. This change allows
3255 multiple
3256 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
3257 834.
3258 Lin Ming.
3259
3260 ----------------------------------------
3261 02 July 2010. Summary of changes for version 20100702:
3262
3263 1) ACPI CA Core Subsystem:
3264
3265 Implemented several updates to the recently added GPE reference count
3266 support. The model for "wake" GPEs is changing to give the host OS
3267 complete
3268 control of these GPEs. Eventually, the ACPICA core will not execute any
3269 _PRW
3270 methods, since the host already must execute them. Also, additional
3271 changes
3272 were made to help ensure that the reference counts are kept in proper
3273 synchronization with reality. Rafael J. Wysocki.
3274
3275 1) Ensure that GPEs are not enabled twice during initialization.
3276 2) Ensure that GPE enable masks stay in sync with the reference count.
3277 3) Do not inadvertently enable GPEs when writing GPE registers.
3278 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
3279 interface. This interface will set or clear individual GPEs for wakeup.
3280 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
3281 interfaces
3282 are now used for "runtime" GPEs only.
3283
3284 Changed the behavior of the GPE install/remove handler interfaces. The
3285 GPE
3286 is
3287 no longer disabled during this process, as it was found to cause problems
3288 on
3289 some machines. Rafael J. Wysocki.
3290
3291 Reverted a change introduced in version 20100528 to enable Embedded
3292 Controller multi-byte transfers. This change was found to cause problems
3293 with
3294 Index Fields and possibly Bank Fields. It will be reintroduced when these
3295 problems have been resolved.
3296
3297 Fixed a problem with references to Alias objects within Package Objects.
3298 A
3299 reference to an Alias within the definition of a Package was not always
3300 resolved properly. Aliases to objects like Processors, Thermal zones,
3301 etc.
3302 were resolved to the actual object instead of a reference to the object
3303 as
3304 it
3305 should be. Package objects are only allowed to contain integer, string,
3306 buffer, package, and reference objects. Redhat bugzilla 608648.
3307
3308 Example Code and Data Size: These are the sizes for the OS-independent
3309 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3310 debug version of the code includes the debug output trace mechanism and
3311 has a
3312 much larger code and data size.
3313
3314 Previous Release:
3315 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3316 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
3317 Current Release:
3318 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3319 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
3320
3321 2) iASL Compiler/Disassembler and Tools:
3322
3323 iASL: Implemented a new compiler subsystem to allow definition and
3324 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
3325 These
3326 are called "ACPI Data Tables", and the new compiler is the "Data Table
3327 Compiler". This compiler is intended to simplify the existing error-prone
3328 process of creating these tables for the BIOS, as well as allowing the
3329 disassembly, modification, recompilation, and override of existing ACPI
3330 data
3331 tables. See the iASL User Guide for detailed information.
3332
3333 iASL: Implemented a new Template Generator option in support of the new
3334 Data
3335 Table Compiler. This option will create examples of all known ACPI tables
3336 that can be used as the basis for table development. See the iASL
3337 documentation and the -T option.
3338
3339 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
3340 Descriptor Table).
3341
3342 Updated the Linux makefiles for iASL and AcpiExec to place the generated
3343 object files in the local directory so that there can be no collisions
3344 between the shared files between them that are generated with different
3345 options.
3346
3347 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
3348 Use
3349 the #define __APPLE__ to enable this support.
3350
3351 ----------------------------------------
3352 28 May 2010. Summary of changes for version 20100528:
3353
3354 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
3355 available at www.acpi.info. This is primarily an errata release.
3356
3357 1) ACPI CA Core Subsystem:
3358
3359 Undefined ACPI tables: We are looking for the definitions for the
3360 following
3361 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
3362
3363 Implemented support to enable multi-byte transfers for Embedded
3364 Controller
3365 (EC) operation regions. Previously, the maximum data size passed to the
3366 EC
3367 operation region handler was a single byte. There are often EC Fields
3368 larger
3369 than one byte that need to be transferred, and it is useful for the EC
3370 driver
3371 to lock these as a single transaction. This change enables single
3372 transfers
3373 larger than 8 bits. This effectively changes the access to the EC space
3374 from
3375 ByteAcc to AnyAcc, and will probably require changes to the host OS
3376 Embedded
3377 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
3378 bit
3379 transfers. Alexey Starikovskiy, Lin Ming
3380
3381 Implemented a performance enhancement for namespace search and access.
3382 This
3383 change enhances the performance of namespace searches and walks by adding
3384 a
3385 backpointer to the parent in each namespace node. On large namespaces,
3386 this
3387 change can improve overall ACPI performance by up to 9X. Adding a pointer
3388 to
3389 each namespace node increases the overall size of the internal namespace
3390 by
3391 about 5%, since each namespace entry usually consists of both a namespace
3392 node and an ACPI operand object. However, this is the first growth of the
3393 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
3394
3395 Implemented a performance optimization that reduces the number of
3396 namespace
3397 walks. On control method exit, only walk the namespace if the method is
3398 known
3399 to have created namespace objects outside of its local scope. Previously,
3400 the
3401 entire namespace was traversed on each control method exit. This change
3402 can
3403 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
3404 Moore.
3405
3406 Added support to truncate I/O addresses to 16 bits for Windows
3407 compatibility.
3408 Some ASL code has been seen in the field that inadvertently has bits set
3409 above bit 15. This feature is optional and is enabled if the BIOS
3410 requests
3411 any Windows OSI strings. It can also be enabled by the host OS. Matthew
3412 Garrett, Bob Moore.
3413
3414 Added support to limit the maximum time for the ASL Sleep() operator. To
3415 prevent accidental deep sleeps, limit the maximum time that Sleep() will
3416 actually sleep. Configurable, the default maximum is two seconds. ACPICA
3417 bugzilla 854.
3418
3419 Added run-time validation support for the _WDG and_WED Microsoft
3420 predefined
3421 methods. These objects are defined by "Windows Instrumentation", and are
3422 not
3423 part of the ACPI spec. ACPICA BZ 860.
3424
3425 Expanded all statistic counters used during namespace and device
3426 initialization from 16 to 32 bits in order to support very large
3427 namespaces.
3428
3429 Replaced all instances of %d in printf format specifiers with %u since
3430 nearly
3431 all integers in ACPICA are unsigned.
3432
3433 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
3434 returned
3435 as AE_NO_HANDLER.
3436
3437 Example Code and Data Size: These are the sizes for the OS-independent
3438 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3439 debug version of the code includes the debug output trace mechanism and
3440 has a
3441 much larger code and data size.
3442
3443 Previous Release:
3444 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
3445 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
3446 Current Release:
3447 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3448 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
3449
3450 2) iASL Compiler/Disassembler and Tools:
3451
3452 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
3453 methods. These objects are defined by "Windows Instrumentation", and are
3454 not
3455 part of the ACPI spec. ACPICA BZ 860.
3456
3457 AcpiExec: added option to disable the memory tracking mechanism. The -dt
3458 option will disable the tracking mechanism, which improves performance
3459 considerably.
3460
3461 AcpiExec: Restructured the command line options into -d (disable) and -e
3462 (enable) options.
3463
3464 ----------------------------------------
3465 28 April 2010. Summary of changes for version 20100428:
3466
3467 1) ACPI CA Core Subsystem:
3468
3469 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
3470 including FADT-based and GPE Block Devices, execute any _PRW methods in
3471 the
3472 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
3473 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
3474 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
3475 Devices. Provides compatibility with other ACPI implementations. Two new
3476 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
3477 Moore.
3478
3479 Fixed a regression introduced in version 20100331 within the table
3480 manager
3481 where initial table loading could fail. This was introduced in the fix
3482 for
3483 AcpiReallocateRootTable. Also, renamed some of fields in the table
3484 manager
3485 data structures to clarify their meaning and use.
3486
3487 Fixed a possible allocation overrun during internal object copy in
3488 AcpiUtCopySimpleObject. The original code did not correctly handle the
3489 case
3490 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
3491 847.
3492
3493 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
3494 possible access beyond end-of-allocation. Also, now fully validate
3495 descriptor
3496 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
3497
3498 Example Code and Data Size: These are the sizes for the OS-independent
3499 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3500 debug version of the code includes the debug output trace mechanism and
3501 has a
3502 much larger code and data size.
3503
3504 Previous Release:
3505 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
3506 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
3507 Current Release:
3508 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
3509 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
3510
3511 2) iASL Compiler/Disassembler and Tools:
3512
3513 iASL: Implemented Min/Max/Len/Gran validation for address resource
3514 descriptors. This change implements validation for the address fields
3515 that
3516 are common to all address-type resource descriptors. These checks are
3517 implemented: Checks for valid Min/Max, length within the Min/Max window,
3518 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
3519 per
3520 table 6-40 in the ACPI 4.0a specification. Also split the large
3521 aslrestype1.c
3522 and aslrestype2.c files into five new files. ACPICA BZ 840.
3523
3524 iASL: Added support for the _Wxx predefined names. This support was
3525 missing
3526 and these names were not recognized by the compiler as valid predefined
3527 names. ACPICA BZ 851.
3528
3529 iASL: Added an error for all predefined names that are defined to return
3530 no
3531 value and thus must be implemented as Control Methods. These include all
3532 of
3533 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
3534 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
3535
3536 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
3537 an
3538 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
3539 be
3540 dynamically loaded via the Load() operator. Also cleaned up output for
3541 the
3542 -
3543 ta and -tc options. ACPICA BZ 853.
3544
3545 Tests: Added a new file with examples of extended iASL error checking.
3546 Demonstrates the advanced error checking ability of the iASL compiler.
3547 Available at tests/misc/badcode.asl.
3548
3549 ----------------------------------------
3550 31 March 2010. Summary of changes for version 20100331:
3551
3552 1) ACPI CA Core Subsystem:
3553
3554 Completed a major update for the GPE support in order to improve support
3555 for
3556 shared GPEs and to simplify both host OS and ACPICA code. Added a
3557 reference
3558 count mechanism to support shared GPEs that require multiple device
3559 drivers.
3560 Several external interfaces have changed. One external interface has been
3561 removed. One new external interface was added. Most of the GPE external
3562 interfaces now use the GPE spinlock instead of the events mutex (and the
3563 Flags parameter for many GPE interfaces has been removed.) See the
3564 updated
3565 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
3566 Rafael
3567 Wysocki. ACPICA BZ 831.
3568
3569 Changed:
3570 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
3571 Removed:
3572 AcpiSetGpeType
3573 New:
3574 AcpiSetGpe
3575
3576 Implemented write support for DataTable operation regions. These regions
3577 are
3578 defined via the DataTableRegion() operator. Previously, only read support
3579 was
3580 implemented. The ACPI specification allows DataTableRegions to be
3581 read/write,
3582 however.
3583
3584 Implemented a new subsystem option to force a copy of the DSDT to local
3585 memory. Optionally copy the entire DSDT to local memory (instead of
3586 simply
3587 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
3588 replace
3589 the original DSDT, creating the need for this option. Default is FALSE,
3590 do
3591 not copy the DSDT.
3592
3593 Implemented detection of a corrupted or replaced DSDT. This change adds
3594 support to detect a DSDT that has been corrupted and/or replaced from
3595 outside
3596 the OS (by firmware). This is typically catastrophic for the system, but
3597 has
3598 been seen on some machines. Once this problem has been detected, the DSDT
3599 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
3600
3601 Fixed two problems with AcpiReallocateRootTable during the root table
3602 copy.
3603 When copying the root table to the new allocation, the length used was
3604 incorrect. The new size was used instead of the current table size,
3605 meaning
3606 too much data was copied. Also, the count of available slots for ACPI
3607 tables
3608 was not set correctly. Alexey Starikovskiy, Bob Moore.
3609
3610 Example Code and Data Size: These are the sizes for the OS-independent
3611 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3612 debug version of the code includes the debug output trace mechanism and
3613 has a
3614 much larger code and data size.
3615
3616 Previous Release:
3617 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
3618 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
3619 Current Release:
3620 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
3621 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
3622
3623 2) iASL Compiler/Disassembler and Tools:
3624
3625 iASL: Implement limited typechecking for values returned from predefined
3626 control methods. The type of any returned static (unnamed) object is now
3627 validated. For example, Return(1). ACPICA BZ 786.
3628
3629 iASL: Fixed a predefined name object verification regression. Fixes a
3630 problem
3631 introduced in version 20100304. An error is incorrectly generated if a
3632 predefined name is declared as a static named object with a value defined
3633 using the keywords "Zero", "One", or "Ones". Lin Ming.
3634
3635 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
3636 by
3637 reducing the requested registry access rights. ACPICA BZ 842.
3638
3639 Disassembler: fixed a possible fault when generating External()
3640 statements.
3641 Introduced in commit ae7d6fd: Properly handle externals with parent-
3642 prefix
3643 (carat). Fixes a string length allocation calculation. Lin Ming.
3644
3645 ----------------------------------------
3646 04 March 2010. Summary of changes for version 20100304:
3647
3648 1) ACPI CA Core Subsystem:
3649
3650 Fixed a possible problem with the AML Mutex handling function
3651 AcpiExReleaseMutex where the function could fault under the very rare
3652 condition when the interpreter has blocked, the interpreter lock is
3653 released,
3654 the interpreter is then reentered via the same thread, and attempts to
3655 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
3656 Lin
3657 Ming.
3658
3659 Implemented additional configuration support for the AML "Debug Object".
3660 Output from the debug object can now be enabled via a global variable,
3661 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
3662 debugging.
3663 This debug output is now available in the release version of ACPICA
3664 instead
3665 of just the debug version. Also, the entire debug output module can now
3666 be
3667 configured out of the ACPICA build if desired. One new file added,
3668 executer/exdebug.c. Lin Ming, Bob Moore.
3669
3670 Added header support for the ACPI MCHI table (Management Controller Host
3671 Interface Table). This table was added in ACPI 4.0, but the defining
3672 document
3673 has only recently become available.
3674
3675 Standardized output of integer values for ACPICA warnings/errors. Always
3676 use
3677 0x prefix for hex output, always use %u for unsigned integer decimal
3678 output.
3679 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
3680 400
3681 invocations.) These invocations were converted from the original
3682 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
3683
3684 Example Code and Data Size: These are the sizes for the OS-independent
3685 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3686 debug version of the code includes the debug output trace mechanism and
3687 has a
3688 much larger code and data size.
3689
3690 Previous Release:
3691 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
3692 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
3693 Current Release:
3694 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
3695 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
3696
3697 2) iASL Compiler/Disassembler and Tools:
3698
3699 iASL: Implemented typechecking support for static (non-control method)
3700 predefined named objects that are declared with the Name() operator. For
3701 example, the type of this object is now validated to be of type Integer:
3702 Name(_BBN, 1). This change migrates the compiler to using the core
3703 predefined
3704 name table instead of maintaining a local version. Added a new file,
3705 aslpredef.c. ACPICA BZ 832.
3706
3707 Disassembler: Added support for the ACPI 4.0 MCHI table.
3708
3709 ----------------------------------------
3710 21 January 2010. Summary of changes for version 20100121:
3711
3712 1) ACPI CA Core Subsystem:
3713
3714 Added the 2010 copyright to all module headers and signons. This affects
3715 virtually every file in the ACPICA core subsystem, the iASL compiler, the
3716 tools/utilities, and the test suites.
3717
3718 Implemented a change to the AcpiGetDevices interface to eliminate
3719 unnecessary
3720 invocations of the _STA method. In the case where a specific _HID is
3721 requested, do not run _STA until a _HID match is found. This eliminates
3722 potentially dozens of _STA calls during a search for a particular
3723 device/HID,
3724 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
3725
3726 Implemented an additional repair for predefined method return values.
3727 Attempt
3728 to repair unexpected NULL elements within returned Package objects.
3729 Create
3730 an
3731 Integer of value zero, a NULL String, or a zero-length Buffer as
3732 appropriate.
3733 ACPICA BZ 818. Lin Ming, Bob Moore.
3734
3735 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
3736 the
3737 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
3738 (with
3739 64-bit AML integers). It is now obsolete and this change removes it from
3740 the
3741 ACPICA code base, replaced by UINT64. The original typedef has been
3742 retained
3743 for now for compatibility with existing device driver code. ACPICA BZ
3744 824.
3745
3746 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
3747 in
3748 the parse tree object.
3749
3750 Added additional warning options for the gcc-4 generation. Updated the
3751 source
3752 accordingly. This includes some code restructuring to eliminate
3753 unreachable
3754 code, elimination of some gotos, elimination of unused return values,
3755 some
3756 additional casting, and removal of redundant declarations.
3757
3758 Example Code and Data Size: These are the sizes for the OS-independent
3759 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3760 debug version of the code includes the debug output trace mechanism and
3761 has a
3762 much larger code and data size.
3763
3764 Previous Release:
3765 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
3766 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
3767 Current Release:
3768 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
3769 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
3770
3771 2) iASL Compiler/Disassembler and Tools:
3772
3773 No functional changes for this release.
3774
3775 ----------------------------------------
3776 14 December 2009. Summary of changes for version 20091214:
3777
3778 1) ACPI CA Core Subsystem:
3779
3780 Enhanced automatic data type conversions for predefined name repairs.
3781 This
3782 change expands the automatic repairs/conversions for predefined name
3783 return
3784 values to make Integers, Strings, and Buffers fully interchangeable.
3785 Also,
3786 a
3787 Buffer can be converted to a Package of Integers if necessary. The
3788 nsrepair.c
3789 module was completely restructured. Lin Ming, Bob Moore.
3790
3791 Implemented automatic removal of null package elements during predefined
3792 name
3793 repairs. This change will automatically remove embedded and trailing NULL
3794 package elements from returned package objects that are defined to
3795 contain
3796 a
3797 variable number of sub-packages. The driver is then presented with a
3798 package
3799 with no null elements to deal with. ACPICA BZ 819.
3800
3801 Implemented a repair for the predefined _FDE and _GTM names. The expected
3802 return value for both names is a Buffer of 5 DWORDs. This repair fixes
3803 two
3804 possible problems (both seen in the field), where a package of integers
3805 is
3806 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
3807 Kim.
3808
3809 Implemented additional module-level code support. This change will
3810 properly
3811 execute module-level code that is not at the root of the namespace (under
3812 a
3813 Device object, etc.). Now executes the code within the current scope
3814 instead
3815 of the root. ACPICA BZ 762. Lin Ming.
3816
3817 Fixed possible mutex acquisition errors when running _REG methods. Fixes
3818 a
3819 problem where mutex errors can occur when running a _REG method that is
3820 in
3821 the same scope as a method-defined operation region or an operation
3822 region
3823 under a module-level IF block. This type of code is rare, so the problem
3824 has
3825 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
3826
3827 Fixed a possible memory leak during module-level code execution. An
3828 object
3829 could be leaked for each block of executed module-level code if the
3830 interpreter slack mode is enabled This change deletes any implicitly
3831 returned
3832 object from the module-level code block. Lin Ming.
3833
3834 Removed messages for successful predefined repair(s). The repair
3835 mechanism
3836 was considered too wordy. Now, messages are only unconditionally emitted
3837 if
3838 the return object cannot be repaired. Existing messages for successful
3839 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
3840 827.
3841
3842 Example Code and Data Size: These are the sizes for the OS-independent
3843 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3844 debug version of the code includes the debug output trace mechanism and
3845 has a
3846 much larger code and data size.
3847
3848 Previous Release:
3849 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
3850 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
3851 Current Release:
3852 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
3853 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
3854
3855 2) iASL Compiler/Disassembler and Tools:
3856
3857 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
3858 files
3859 were no longer automatically removed at the termination of the compile.
3860
3861 acpiexec: Implemented the -f option to specify default region fill value.
3862 This option specifies the value used to initialize buffers that simulate
3863 operation regions. Default value is zero. Useful for debugging problems
3864 that
3865 depend on a specific initial value for a region or field.
3866
3867 ----------------------------------------
3868 12 November 2009. Summary of changes for version 20091112:
3869
3870 1) ACPI CA Core Subsystem:
3871
3872 Implemented a post-order callback to AcpiWalkNamespace. The existing
3873 interface only has a pre-order callback. This change adds an additional
3874 parameter for a post-order callback which will be more useful for bus
3875 scans.
3876 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
3877
3878 Modified the behavior of the operation region memory mapping cache for
3879 SystemMemory. Ensure that the memory mappings created for operation
3880 regions
3881 do not cross 4K page boundaries. Crossing a page boundary while mapping
3882 regions can cause kernel warnings on some hosts if the pages have
3883 different
3884 attributes. Such regions are probably BIOS bugs, and this is the
3885 workaround.
3886 Linux BZ 14445. Lin Ming.
3887
3888 Implemented an automatic repair for predefined methods that must return
3889 sorted lists. This change will repair (by sorting) packages returned by
3890 _ALR,
3891 _PSS, and _TSS. Drivers can now assume that the packages are correctly
3892 sorted
3893 and do not contain NULL package elements. Adds one new file,
3894 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
3895
3896 Fixed a possible fault during predefined name validation if a return
3897 Package
3898 object contains NULL elements. Also adds a warning if a NULL element is
3899 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
3900 may
3901 include repair or removal of all such NULL elements where possible.
3902
3903 Implemented additional module-level executable AML code support. This
3904 change
3905 will execute module-level code that is not at the root of the namespace
3906 (under a Device object, etc.) at table load time. Module-level executable
3907 AML
3908 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
3909
3910 Implemented a new internal function to create Integer objects. This
3911 function
3912 simplifies miscellaneous object creation code. ACPICA BZ 823.
3913
3914 Reduced the severity of predefined repair messages, Warning to Info.
3915 Since
3916 the object was successfully repaired, a warning is too severe. Reduced to
3917 an
3918 info message for now. These messages may eventually be changed to debug-
3919 only.
3920 ACPICA BZ 812.
3921
3922 Example Code and Data Size: These are the sizes for the OS-independent
3923 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3924 debug version of the code includes the debug output trace mechanism and
3925 has a
3926 much larger code and data size.
3927
3928 Previous Release:
3929 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
3930 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
3931 Current Release:
3932 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
3933 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
3934
3935 2) iASL Compiler/Disassembler and Tools:
3936
3937 iASL: Implemented Switch() with While(1) so that Break works correctly.
3938 This
3939 change correctly implements the Switch operator with a surrounding
3940 While(1)
3941 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
3942
3943 iASL: Added a message if a package initializer list is shorter than
3944 package
3945 length. Adds a new remark for a Package() declaration if an initializer
3946 list
3947 exists, but is shorter than the declared length of the package. Although
3948 technically legal, this is probably a coding error and it is seen in the
3949 field. ACPICA BZ 815. Lin Ming, Bob Moore.
3950
3951 iASL: Fixed a problem where the compiler could fault after the maximum
3952 number
3953 of errors was reached (200).
3954
3955 acpixtract: Fixed a possible warning for pointer cast if the compiler
3956 warning
3957 level set very high.
3958
3959 ----------------------------------------
3960 13 October 2009. Summary of changes for version 20091013:
3961
3962 1) ACPI CA Core Subsystem:
3963
3964 Fixed a problem where an Operation Region _REG method could be executed
3965 more
3966 than once. If a custom address space handler is installed by the host
3967 before
3968 the "initialize operation regions" phase of the ACPICA initialization,
3969 any
3970 _REG methods for that address space could be executed twice. This change
3971 fixes the problem. ACPICA BZ 427. Lin Ming.
3972
3973 Fixed a possible memory leak for the Scope() ASL operator. When the exact
3974 invocation of "Scope(\)" is executed (change scope to root), one internal
3975 operand object was leaked. Lin Ming.
3976
3977 Implemented a run-time repair for the _MAT predefined method. If the _MAT
3978 return value is defined as a Field object in the AML, and the field
3979 size is less than or equal to the default width of an integer (32 or
3980 64),_MAT
3981 can incorrectly return an Integer instead of a Buffer. ACPICA now
3982 automatically repairs this problem. ACPICA BZ 810.
3983
3984 Implemented a run-time repair for the _BIF and _BIX predefined methods.
3985 The
3986 "OEM Information" field is often incorrectly returned as an Integer with
3987 value zero if the field is not supported by the platform. This is due to
3988 an
3989 ambiguity in the ACPI specification. The field should always be a string.
3990 ACPICA now automatically repairs this problem by returning a NULL string
3991 within the returned Package. ACPICA BZ 807.
3992
3993 Example Code and Data Size: These are the sizes for the OS-independent
3994 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3995 debug version of the code includes the debug output trace mechanism and
3996 has a
3997 much larger code and data size.
3998
3999 Previous Release:
4000 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
4001 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
4002 Current Release:
4003 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
4004 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
4005
4006 2) iASL Compiler/Disassembler and Tools:
4007
4008 Disassembler: Fixed a problem where references to external symbols that
4009 contained one or more parent-prefixes (carats) were not handled
4010 correctly,
4011 possibly causing a fault. ACPICA BZ 806. Lin Ming.
4012
4013 Disassembler: Restructured the code so that all functions that handle
4014 external symbols are in a single module. One new file is added,
4015 common/dmextern.c.
4016
4017 AML Debugger: Added a max count argument for the Batch command (which
4018 executes multiple predefined methods within the namespace.)
4019
4020 iASL: Updated the compiler documentation (User Reference.) Available at
4021 http://www.acpica.org/documentation/. ACPICA BZ 750.
4022
4023 AcpiXtract: Updated for Lint and other formatting changes. Close all open
4024 files.
4025
4026 ----------------------------------------
4027 03 September 2009. Summary of changes for version 20090903:
4028
4029 1) ACPI CA Core Subsystem:
4030
4031 For Windows Vista compatibility, added the automatic execution of an _INI
4032 method located at the namespace root (\_INI). This method is executed at
4033 table load time. This support is in addition to the automatic execution
4034 of
4035 \_SB._INI. Lin Ming.
4036
4037 Fixed a possible memory leak in the interpreter for AML package objects
4038 if
4039 the package initializer list is longer than the defined size of the
4040 package.
4041 This apparently can only happen if the BIOS changes the package size on
4042 the
4043 fly (seen in a _PSS object), as ASL compilers do not allow this. The
4044 interpreter will truncate the package to the defined size (and issue an
4045 error
4046 message), but previously could leave the extra objects undeleted if they
4047 were
4048 pre-created during the argument processing (such is the case if the
4049 package
4050 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
4051
4052 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
4053 This has been reported in the field. Previously, ACPICA would zero out
4054 the
4055 buffer/string. Now, the operation is treated as a noop. Provides Windows
4056 compatibility. ACPICA BZ 803. Lin Ming.
4057
4058 Removed an extraneous error message for ASL constructs of the form
4059 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
4060 statements
4061 are seen in many BIOSs and are once again treated as NOOPs and no error
4062 is
4063 emitted when they are encountered. ACPICA BZ 785.
4064
4065 Fixed an extraneous warning message if a _DSM reserved method returns a
4066 Package object. _DSM can return any type of object, so validation on the
4067 return type cannot be performed. ACPICA BZ 802.
4068
4069 Example Code and Data Size: These are the sizes for the OS-independent
4070 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4071 debug version of the code includes the debug output trace mechanism and
4072 has a
4073 much larger code and data size.
4074
4075 Previous Release:
4076 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
4077 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
4078 Current Release:
4079 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
4080 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
4081
4082 2) iASL Compiler/Disassembler and Tools:
4083
4084 iASL: Fixed a problem with the use of the Alias operator and Resource
4085 Templates. The correct alias is now constructed and no error is emitted.
4086 ACPICA BZ 738.
4087
4088 iASL: Implemented the -I option to specify additional search directories
4089 for
4090 include files. Allows multiple additional search paths for include files.
4091 Directories are searched in the order specified on the command line
4092 (after
4093 the local directory is searched.) ACPICA BZ 800.
4094
4095 iASL: Fixed a problem where the full pathname for include files was not
4096 emitted for warnings/errors. This caused the IDE support to not work
4097 properly. ACPICA BZ 765.
4098
4099 iASL: Implemented the -@ option to specify a Windows-style response file
4100 containing additional command line options. ACPICA BZ 801.
4101
4102 AcpiExec: Added support to load multiple AML files simultaneously (such
4103 as
4104 a
4105 DSDT and multiple SSDTs). Also added support for wildcards within the AML
4106 pathname. These features allow all machine tables to be easily loaded and
4107 debugged together. ACPICA BZ 804.
4108
4109 Disassembler: Added missing support for disassembly of HEST table Error
4110 Bank
4111 subtables.
4112
4113 ----------------------------------------
4114 30 July 2009. Summary of changes for version 20090730:
4115
4116 The ACPI 4.0 implementation for ACPICA is complete with this release.
4117
4118 1) ACPI CA Core Subsystem:
4119
4120 ACPI 4.0: Added header file support for all new and changed ACPI tables.
4121 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
4122 new
4123 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
4124 BERT,
4125 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
4126 There
4127 have been some ACPI 4.0 changes to other existing tables. Split the large
4128 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
4129
4130 ACPI 4.0: Implemented predefined name validation for all new names. There
4131 are
4132 31 new names in ACPI 4.0. The predefined validation module was split into
4133 two
4134 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
4135
4136 Implemented support for so-called "module-level executable code". This is
4137 executable AML code that exists outside of any control method and is
4138 intended
4139 to be executed at table load time. Although illegal since ACPI 2.0, this
4140 type
4141 of code still exists and is apparently still being created. Blocks of
4142 this
4143 code are now detected and executed as intended. Currently, the code
4144 blocks
4145 must exist under either an If, Else, or While construct; these are the
4146 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
4147
4148 Implemented an automatic dynamic repair for predefined names that return
4149 nested Package objects. This applies to predefined names that are defined
4150 to
4151 return a variable-length Package of sub-packages. If the number of sub-
4152 packages is one, BIOS code is occasionally seen that creates a simple
4153 single
4154 package with no sub-packages. This code attempts to fix the problem by
4155 wrapping a new package object around the existing package. These methods
4156 can
4157 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
4158 BZ
4159 790.
4160
4161 Fixed a regression introduced in 20090625 for the AcpiGetDevices
4162 interface.
4163 The _HID/_CID matching was broken and no longer matched IDs correctly.
4164 ACPICA
4165 BZ 793.
4166
4167 Fixed a problem with AcpiReset where the reset would silently fail if the
4168 register was one of the protected I/O ports. AcpiReset now bypasses the
4169 port
4170 validation mechanism. This may eventually be driven into the
4171 AcpiRead/Write
4172 interfaces.
4173
4174 Fixed a regression related to the recent update of the AcpiRead/Write
4175 interfaces. A sleep/suspend could fail if the optional PM2 Control
4176 register
4177 does not exist during an attempt to write the Bus Master Arbitration bit.
4178 (However, some hosts already delete the code that writes this bit, and
4179 the
4180 code may in fact be obsolete at this date.) ACPICA BZ 799.
4181
4182 Fixed a problem where AcpiTerminate could fault if inadvertently called
4183 twice
4184 in succession. ACPICA BZ 795.
4185
4186 Example Code and Data Size: These are the sizes for the OS-independent
4187 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4188 debug version of the code includes the debug output trace mechanism and
4189 has a
4190 much larger code and data size.
4191
4192 Previous Release:
4193 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
4194 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
4195 Current Release:
4196 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
4197 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
4198
4199 2) iASL Compiler/Disassembler and Tools:
4200
4201 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
4202 changes to existing tables. ACPICA BZ 775.
4203
4204 ----------------------------------------
4205 25 June 2009. Summary of changes for version 20090625:
4206
4207 The ACPI 4.0 Specification was released on June 16 and is available at
4208 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
4209 continue for the next few releases.
4210
4211 1) ACPI CA Core Subsystem:
4212
4213 ACPI 4.0: Implemented interpreter support for the IPMI operation region
4214 address space. Includes support for bi-directional data buffers and an
4215 IPMI
4216 address space handler (to be installed by an IPMI device driver.) ACPICA
4217 BZ
4218 773. Lin Ming.
4219
4220 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
4221 Includes
4222 support in both the header files and the disassembler.
4223
4224 Completed a major update for the AcpiGetObjectInfo external interface.
4225 Changes include:
4226 - Support for variable, unlimited length HID, UID, and CID strings.
4227 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
4228 etc.)
4229 - Call the _SxW power methods on behalf of a device object.
4230 - Determine if a device is a PCI root bridge.
4231 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
4232 These changes will require an update to all callers of this interface.
4233 See
4234 the updated ACPICA Programmer Reference for details. One new source file
4235 has
4236 been added - utilities/utids.c. ACPICA BZ 368, 780.
4237
4238 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
4239 transfers. The Value parameter has been extended from 32 bits to 64 bits
4240 in
4241 order to support new ACPI 4.0 tables. These changes will require an
4242 update
4243 to
4244 all callers of these interfaces. See the ACPICA Programmer Reference for
4245 details. ACPICA BZ 768.
4246
4247 Fixed several problems with AcpiAttachData. The handler was not invoked
4248 when
4249 the host node was deleted. The data sub-object was not automatically
4250 deleted
4251 when the host node was deleted. The interface to the handler had an
4252 unused
4253 parameter, this was removed. ACPICA BZ 778.
4254
4255 Enhanced the function that dumps ACPI table headers. All non-printable
4256 characters in the string fields are now replaced with '?' (Signature,
4257 OemId,
4258 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
4259 these fields are occasionally seen in the field. ACPICA BZ 788.
4260
4261 Fixed a problem with predefined method repair code where the code that
4262 attempts to repair/convert an object of incorrect type is only executed
4263 on
4264 the first time the predefined method is called. The mechanism that
4265 disables
4266 warnings on subsequent calls was interfering with the repair mechanism.
4267 ACPICA BZ 781.
4268
4269 Fixed a possible memory leak in the predefined validation/repair code
4270 when
4271 a
4272 buffer is automatically converted to an expected string object.
4273
4274 Removed obsolete 16-bit files from the distribution and from the current
4275 git
4276 tree head. ACPICA BZ 776.
4277
4278 Example Code and Data Size: These are the sizes for the OS-independent
4279 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4280 debug version of the code includes the debug output trace mechanism and
4281 has a
4282 much larger code and data size.
4283
4284 Previous Release:
4285 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
4286 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
4287 Current Release:
4288 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
4289 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
4290
4291 2) iASL Compiler/Disassembler and Tools:
4292
4293 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
4294 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
4295
4296 ACPI 4.0: iASL - implemented compile-time validation support for all new
4297 predefined names and control methods (31 total). ACPICA BZ 769.
4298
4299 ----------------------------------------
4300 21 May 2009. Summary of changes for version 20090521:
4301
4302 1) ACPI CA Core Subsystem:
4303
4304 Disabled the preservation of the SCI enable bit in the PM1 control
4305 register.
4306 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
4307 to
4308 be
4309 a "preserved" bit - "OSPM always preserves this bit position", section
4310 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
4311 because the bit needs to be explicitly set by the OS as a workaround. No
4312 machines fail if the bit is not preserved. Therefore, ACPICA no longer
4313 attempts to preserve this bit.
4314
4315 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
4316 incorrectly formed _PRT package could cause a fault. Added validation to
4317 ensure that each package element is actually a sub-package.
4318
4319 Implemented a new interface to install or override a single control
4320 method,
4321 AcpiInstallMethod. This interface is useful when debugging in order to
4322 repair
4323 an existing method or to install a missing method without having to
4324 override
4325 the entire ACPI table. See the ACPICA Programmer Reference for use and
4326 examples. Lin Ming, Bob Moore.
4327
4328 Fixed several reference count issues with the DdbHandle object that is
4329 created from a Load or LoadTable operator. Prevent premature deletion of
4330 the
4331 object. Also, mark the object as invalid once the table has been
4332 unloaded.
4333 This is needed because the handle itself may not be deleted after the
4334 table
4335 unload, depending on whether it has been stored in a named object by the
4336 caller. Lin Ming.
4337
4338 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
4339 mutexes of the same sync level are acquired but then not released in
4340 strict
4341 opposite order, the internally maintained Current Sync Level becomes
4342 confused
4343 and can cause subsequent execution errors. ACPICA BZ 471.
4344
4345 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
4346 specification has been changed to make the SyncLevel for mutex objects
4347 more
4348 useful. When releasing a mutex, the SyncLevel of the mutex must now be
4349 the
4350 same as the current sync level. This makes more sense than the previous
4351 rule
4352 (SyncLevel less than or equal). This change updates the code to match the
4353 specification.
4354
4355 Fixed a problem with the local version of the AcpiOsPurgeCache function.
4356 The
4357 (local) cache must be locked during all cache object deletions. Andrew
4358 Baumann.
4359
4360 Updated the Load operator to use operation region interfaces. This
4361 replaces
4362 direct memory mapping with region access calls. Now, all region accesses
4363 go
4364 through the installed region handler as they should.
4365
4366 Simplified and optimized the NsGetNextNode function. Reduced parameter
4367 count
4368 and reduced code for this frequently used function.
4369
4370 Example Code and Data Size: These are the sizes for the OS-independent
4371 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4372 debug version of the code includes the debug output trace mechanism and
4373 has a
4374 much larger code and data size.
4375
4376 Previous Release:
4377 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
4378 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
4379 Current Release:
4380 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
4381 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
4382
4383 2) iASL Compiler/Disassembler and Tools:
4384
4385 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
4386 problems
4387 with sub-table disassembly and handling invalid sub-tables. Attempt
4388 recovery
4389 after an invalid sub-table ID.
4390
4391 ----------------------------------------
4392 22 April 2009. Summary of changes for version 20090422:
4393
4394 1) ACPI CA Core Subsystem:
4395
4396 Fixed a compatibility issue with the recently released I/O port
4397 protection
4398 mechanism. For windows compatibility, 1) On a port protection violation,
4399 simply ignore the request and do not return an exception (allow the
4400 control
4401 method to continue execution.) 2) If only part of the request overlaps a
4402 protected port, read/write the individual ports that are not protected.
4403 Linux
4404 BZ 13036. Lin Ming
4405
4406 Enhanced the execution of the ASL/AML BreakPoint operator so that it
4407 actually
4408 breaks into the AML debugger if the debugger is present. This matches the
4409 ACPI-defined behavior.
4410
4411 Fixed several possible warnings related to the use of the configurable
4412 ACPI_THREAD_ID. This type can now be configured as either an integer or a
4413 pointer with no warnings. Also fixes several warnings in printf-like
4414 statements for the 64-bit build when the type is configured as a pointer.
4415 ACPICA BZ 766, 767.
4416
4417 Fixed a number of possible warnings when compiling with gcc 4+ (depending
4418 on
4419 warning options.) Examples include printf formats, aliasing, unused
4420 globals,
4421 missing prototypes, missing switch default statements, use of non-ANSI
4422 library functions, use of non-ANSI constructs. See generate/unix/Makefile
4423 for
4424 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
4425
4426 Example Code and Data Size: These are the sizes for the OS-independent
4427 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4428 debug version of the code includes the debug output trace mechanism and
4429 has a
4430 much larger code and data size.
4431
4432 Previous Release:
4433 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
4434 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
4435 Current Release:
4436 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
4437 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
4438
4439 2) iASL Compiler/Disassembler and Tools:
4440
4441 iASL: Fixed a generation warning from Bison 2.3 and fixed several
4442 warnings
4443 on
4444 the 64-bit build.
4445
4446 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
4447 not
4448 correctly digest Windows/DOS formatted files (with CR/LF).
4449
4450 iASL: Added a new option for "quiet mode" (-va) that produces only the
4451 compilation summary, not individual errors and warnings. Useful for large
4452 batch compilations.
4453
4454 AcpiExec: Implemented a new option (-z) to enable a forced
4455 semaphore/mutex
4456 timeout that can be used to detect hang conditions during execution of
4457 AML
4458 code (includes both internal semaphores and AML-defined mutexes and
4459 events.)
4460
4461 Added new makefiles for the generation of acpica in a generic unix-like
4462 environment. These makefiles are intended to generate the acpica tools
4463 and
4464 utilities from the original acpica git source tree structure.
4465
4466 Test Suites: Updated and cleaned up the documentation files. Updated the
4467 copyrights to 2009, affecting all source files. Use the new version of
4468 iASL
4469 with quiet mode. Increased the number of available semaphores in the
4470 Windows
4471 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
4472 added
4473 an alternate implementation of the semaphore timeout to allow aslts to
4474 execute fully on Cygwin.
4475
4476 ----------------------------------------
4477 20 March 2009. Summary of changes for version 20090320:
4478
4479 1) ACPI CA Core Subsystem:
4480
4481 Fixed a possible race condition between AcpiWalkNamespace and dynamic
4482 table
4483 unloads. Added a reader/writer locking mechanism to allow multiple
4484 concurrent
4485 namespace walks (readers), but block a dynamic table unload until it can
4486 gain
4487 exclusive write access to the namespace. This fixes a problem where a
4488 table
4489 unload could (possibly catastrophically) delete the portion of the
4490 namespace
4491 that is currently being examined by a walk. Adds a new file, utlock.c,
4492 that
4493 implements the reader/writer lock mechanism. ACPICA BZ 749.
4494
4495 Fixed a regression introduced in version 20090220 where a change to the
4496 FADT
4497 handling could cause the ACPICA subsystem to access non-existent I/O
4498 ports.
4499
4500 Modified the handling of FADT register and table (FACS/DSDT) addresses.
4501 The
4502 FADT can contain both 32-bit and 64-bit versions of these addresses.
4503 Previously, the 64-bit versions were favored, meaning that if both 32 and
4504 64
4505 versions were valid, but not equal, the 64-bit version was used. This was
4506 found to cause some machines to fail. Now, in this case, the 32-bit
4507 version
4508 is used instead. This now matches the Windows behavior.
4509
4510 Implemented a new mechanism to protect certain I/O ports. Provides
4511 Microsoft
4512 compatibility and protects the standard PC I/O ports from access via AML
4513 code. Adds a new file, hwvalid.c
4514
4515 Fixed a possible extraneous warning message from the FADT support. The
4516 message warns of a 32/64 length mismatch between the legacy and GAS
4517 definitions for a register.
4518
4519 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
4520 is
4521 made obsolete by the port protection mechanism above. It was previously
4522 used
4523 to validate the entire address range of an operation region, which could
4524 be
4525 incorrect if the range included illegal ports, but fields within the
4526 operation region did not actually access those ports. Validation is now
4527 performed on a per-field basis instead of the entire region.
4528
4529 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
4530 Ignored bits must be "preserved" according to the ACPI spec. Usually,
4531 this
4532 means a read/modify/write when writing to the register. However, for
4533 status
4534 registers, writing a one means clear the event. Writing a zero means
4535 preserve
4536 the event (do not clear.) This behavior is clarified in the ACPI 4.0
4537 spec,
4538 and the ACPICA code now simply always writes a zero to the ignored bit.
4539
4540 Modified the handling of ignored bits for the PM1 A/B Control Registers.
4541 As
4542 per the ACPI specification, for the control registers, preserve
4543 (read/modify/write) all bits that are defined as either reserved or
4544 ignored.
4545
4546 Updated the handling of write-only bits in the PM1 A/B Control Registers.
4547 When reading the register, zero the write-only bits as per the ACPI spec.
4548 ACPICA BZ 443. Lin Ming.
4549
4550 Removed "Linux" from the list of supported _OSI strings. Linux no longer
4551 wants to reply true to this request. The Windows strings are the only
4552 paths
4553 through the AML that are tested and known to work properly.
4554
4555 Previous Release:
4556 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
4557 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
4558 Current Release:
4559 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
4560 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
4561
4562 2) iASL Compiler/Disassembler and Tools:
4563
4564 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
4565 and
4566 aetables.c
4567
4568 ----------------------------------------
4569 20 February 2009. Summary of changes for version 20090220:
4570
4571 1) ACPI CA Core Subsystem:
4572
4573 Optimized the ACPI register locking. Removed locking for reads from the
4574 ACPI
4575 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
4576 is
4577 not required when reading the single-bit registers. The
4578 AcpiGetRegisterUnlocked function is no longer needed and has been
4579 removed.
4580 This will improve performance for reads on these registers. ACPICA BZ
4581 760.
4582
4583 Fixed the parameter validation for AcpiRead/Write. Now return
4584 AE_BAD_PARAMETER if the input register pointer is null, and
4585 AE_BAD_ADDRESS
4586 if
4587 the register has an address of zero. Previously, these cases simply
4588 returned
4589 AE_OK. For optional registers such as PM1B status/enable/control, the
4590 caller
4591 should check for a valid register address before calling. ACPICA BZ 748.
4592
4593 Renamed the external ACPI bit register access functions. Renamed
4594 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
4595 functions. The new names are AcpiReadBitRegister and
4596 AcpiWriteBitRegister.
4597 Also, restructured the code for these functions by simplifying the code
4598 path
4599 and condensing duplicate code to reduce code size.
4600
4601 Added new functions to transparently handle the possibly split PM1 A/B
4602 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
4603 functions
4604 now handle the split registers for PM1 Status, Enable, and Control.
4605 ACPICA
4606 BZ
4607 746.
4608
4609 Added a function to handle the PM1 control registers,
4610 AcpiHwWritePm1Control.
4611 This function writes both of the PM1 control registers (A/B). These
4612 registers
4613 are different than the PM1 A/B status and enable registers in that
4614 different
4615 values can be written to the A/B registers. Most notably, the SLP_TYP
4616 bits
4617 can be different, as per the values returned from the _Sx predefined
4618 methods.
4619
4620 Removed an extra register write within AcpiHwClearAcpiStatus. This
4621 function
4622 was writing an optional PM1B status register twice. The existing call to
4623 the
4624 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
4625 A/B
4626 register. ACPICA BZ 751.
4627
4628 Split out the PM1 Status registers from the FADT. Added new globals for
4629 these
4630 registers (A/B), similar to the way the PM1 Enable registers are handled.
4631 Instead of overloading the FADT Event Register blocks. This makes the
4632 code
4633 clearer and less prone to error.
4634
4635 Fixed the warning message for when the platform contains too many ACPI
4636 tables
4637 for the default size of the global root table data structure. The
4638 calculation
4639 for the truncation value was incorrect.
4640
4641 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
4642 obsolete macro, since it is now a simple reference to ->common.type.
4643 There
4644 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
4645
4646 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
4647 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
4648 simply SLEEP_TYPE. ACPICA BZ 754.
4649
4650 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
4651 function is only needed on 64-bit host operating systems and is thus not
4652 included for 32-bit hosts.
4653
4654 Debug output: print the input and result for invocations of the _OSI
4655 reserved
4656 control method via the ACPI_LV_INFO debug level. Also, reduced some of
4657 the
4658 verbosity of this debug level. Len Brown.
4659
4660 Example Code and Data Size: These are the sizes for the OS-independent
4661 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4662 debug version of the code includes the debug output trace mechanism and
4663 has a
4664 much larger code and data size.
4665
4666 Previous Release:
4667 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
4668 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
4669 Current Release:
4670 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
4671 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
4672
4673 2) iASL Compiler/Disassembler and Tools:
4674
4675 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
4676 various legal performance profiles.
4677
4678 ----------------------------------------
4679 23 January 2009. Summary of changes for version 20090123:
4680
4681 1) ACPI CA Core Subsystem:
4682
4683 Added the 2009 copyright to all module headers and signons. This affects
4684 virtually every file in the ACPICA core subsystem, the iASL compiler, and
4685 the tools/utilities.
4686
4687 Implemented a change to allow the host to override any ACPI table,
4688 including
4689 dynamically loaded tables. Previously, only the DSDT could be replaced by
4690 the
4691 host. With this change, the AcpiOsTableOverride interface is called for
4692 each
4693 table found in the RSDT/XSDT during ACPICA initialization, and also
4694 whenever
4695 a table is dynamically loaded via the AML Load operator.
4696
4697 Updated FADT flag definitions, especially the Boot Architecture flags.
4698
4699 Debugger: For the Find command, automatically pad the input ACPI name
4700 with
4701 underscores if the name is shorter than 4 characters. This enables a
4702 match
4703 with the actual namespace entry which is itself padded with underscores.
4704
4705 Example Code and Data Size: These are the sizes for the OS-independent
4706 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4707 debug version of the code includes the debug output trace mechanism and
4708 has a
4709 much larger code and data size.
4710
4711 Previous Release:
4712 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
4713 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
4714 Current Release:
4715 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
4716 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
4717
4718 2) iASL Compiler/Disassembler and Tools:
4719
4720 Fix build error under Bison-2.4.
4721
4722 Dissasembler: Enhanced FADT support. Added decoding of the Boot
4723 Architecture
4724 flags. Now decode all flags, regardless of the FADT version. Flag output
4725 includes the FADT version which first defined each flag.
4726
4727 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
4728 and
4729 DSDT). Windows only.
4730
4731 ----------------------------------------
4732 04 December 2008. Summary of changes for version 20081204:
4733
4734 1) ACPI CA Core Subsystem:
4735
4736 The ACPICA Programmer Reference has been completely updated and revamped
4737 for
4738 this release. This includes updates to the external interfaces, OSL
4739 interfaces, the overview sections, and the debugger reference.
4740
4741 Several new ACPICA interfaces have been implemented and documented in the
4742 programmer reference:
4743 AcpiReset - Writes the reset value to the FADT-defined reset register.
4744 AcpiDisableAllGpes - Disable all available GPEs.
4745 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
4746 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
4747 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
4748 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
4749 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
4750
4751 Most of the public ACPI hardware-related interfaces have been moved to a
4752 new
4753 file, components/hardware/hwxface.c
4754
4755 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
4756 register lengths within the FADT are now used, and the low level ACPI
4757 register access no longer hardcodes the ACPI register lengths. Given that
4758 there may be some risk in actually trusting the FADT register lengths, a
4759 run-
4760 time option was added to fall back to the default hardcoded lengths if
4761 the
4762 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
4763 option is set to true for now, and a warning is issued if a suspicious
4764 FADT
4765 register length is overridden with the default value.
4766
4767 Fixed a reference count issue in NsRepairObject. This problem was
4768 introduced
4769 in version 20081031 as part of a fix to repair Buffer objects within
4770 Packages. Lin Ming.
4771
4772 Added semaphore support to the Linux/Unix application OS-services layer
4773 (OSL). ACPICA BZ 448. Lin Ming.
4774
4775 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
4776 will
4777 be implemented in the OSL, or will binary semaphores be used instead.
4778
4779 Example Code and Data Size: These are the sizes for the OS-independent
4780 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4781 debug version of the code includes the debug output trace mechanism and
4782 has a
4783 much larger code and data size.
4784
4785 Previous Release:
4786 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
4787 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
4788 Current Release:
4789 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
4790 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
4791
4792 2) iASL Compiler/Disassembler and Tools:
4793
4794 iASL: Completed the '-e' option to include additional ACPI tables in
4795 order
4796 to
4797 aid with disassembly and External statement generation. ACPICA BZ 742.
4798 Lin
4799 Ming.
4800
4801 iASL: Removed the "named object in while loop" error. The compiler cannot
4802 determine how many times a loop will execute. ACPICA BZ 730.
4803
4804 Disassembler: Implemented support for FADT revision 2 (MS extension).
4805 ACPICA
4806 BZ 743.
4807
4808 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
4809 MCFG).
4810
4811 ----------------------------------------
4812 31 October 2008. Summary of changes for version 20081031:
4813
4814 1) ACPI CA Core Subsystem:
4815
4816 Restructured the ACPICA header files into public/private. acpi.h now
4817 includes
4818 only the "public" acpica headers. All other acpica headers are "private"
4819 and
4820 should not be included by acpica users. One new file, accommon.h is used
4821 to
4822 include the commonly used private headers for acpica code generation.
4823 Future
4824 plans include moving all private headers to a new subdirectory.
4825
4826 Implemented an automatic Buffer->String return value conversion for
4827 predefined ACPI methods. For these methods (such as _BIF), added
4828 automatic
4829 conversion for return objects that are required to be a String, but a
4830 Buffer
4831 was found instead. This can happen when reading string battery data from
4832 an
4833 operation region, because it used to be difficult to convert the data
4834 from
4835 buffer to string from within the ASL. Ensures that the host OS is
4836 provided
4837 with a valid null-terminated string. Linux BZ 11822.
4838
4839 Updated the FACS waking vector interfaces. Split
4840 AcpiSetFirmwareWakingVector
4841 into two: one for the 32-bit vector, another for the 64-bit vector. This
4842 is
4843 required because the host OS must setup the wake much differently for
4844 each
4845 vector (real vs. protected mode, etc.) and the interface itself should
4846 not
4847 be
4848 deciding which vector to use. Also, eliminated the
4849 GetFirmwareWakingVector
4850 interface, as it served no purpose (only the firmware reads the vector,
4851 OS
4852 only writes the vector.) ACPICA BZ 731.
4853
4854 Implemented a mechanism to escape infinite AML While() loops. Added a
4855 loop
4856 counter to force exit from AML While loops if the count becomes too
4857 large.
4858 This can occur in poorly written AML when the hardware does not respond
4859 within a while loop and the loop does not implement a timeout. The
4860 maximum
4861 loop count is configurable. A new exception code is returned when a loop
4862 is
4863 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
4864
4865 Optimized the execution of AML While loops. Previously, a control state
4866 object was allocated and freed for each execution of the loop. The
4867 optimization is to simply reuse the control state for each iteration.
4868 This
4869 speeds up the raw loop execution time by about 5%.
4870
4871 Enhanced the implicit return mechanism. For Windows compatibility, return
4872 an
4873 implicit integer of value zero for methods that contain no executable
4874 code.
4875 Such methods are seen in the field as stubs (presumably), and can cause
4876 drivers to fail if they expect a return value. Lin Ming.
4877
4878 Allow multiple backslashes as root prefixes in namepaths. In a fully
4879 qualified namepath, allow multiple backslash prefixes. This can happen
4880 (and
4881 is seen in the field) because of the use of a double-backslash in strings
4882 (since backslash is the escape character) causing confusion. ACPICA BZ
4883 739
4884 Lin Ming.
4885
4886 Emit a warning if two different FACS or DSDT tables are discovered in the
4887 FADT. Checks if there are two valid but different addresses for the FACS
4888 and
4889 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
4890
4891 Consolidated the method argument count validation code. Merged the code
4892 that
4893 validates control method argument counts into the predefined validation
4894 module. Eliminates possible multiple warnings for incorrect argument
4895 counts.
4896
4897 Implemented ACPICA example code. Includes code for ACPICA initialization,
4898 handler installation, and calling a control method. Available at
4899 source/tools/examples.
4900
4901 Added a global pointer for FACS table to simplify internal FACS access.
4902 Use
4903 the global pointer instead of using AcpiGetTableByIndex for each FACS
4904 access.
4905 This simplifies the code for the Global Lock and the Firmware Waking
4906 Vector(s).
4907
4908 Example Code and Data Size: These are the sizes for the OS-independent
4909 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4910 debug version of the code includes the debug output trace mechanism and
4911 has a
4912 much larger code and data size.
4913
4914 Previous Release:
4915 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
4916 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
4917 Current Release:
4918 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
4919 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
4920
4921 2) iASL Compiler/Disassembler and Tools:
4922
4923 iASL: Improved disassembly of external method calls. Added the -e option
4924 to
4925 allow the inclusion of additional ACPI tables to help with the
4926 disassembly
4927 of
4928 method invocations and the generation of external declarations during the
4929 disassembly. Certain external method invocations cannot be disassembled
4930 properly without the actual declaration of the method. Use the -e option
4931 to
4932 include the table where the external method(s) are actually declared.
4933 Most
4934 useful for disassembling SSDTs that make method calls back to the master
4935 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
4936 -d
4937 -e dsdt.aml ssdt1.aml
4938
4939 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
4940 problem where the use of an alias within a namepath would result in a not
4941 found error or cause the compiler to fault. Also now allows forward
4942 references from the Alias operator itself. ACPICA BZ 738.
4943
4944 ----------------------------------------
4945 26 September 2008. Summary of changes for version 20080926:
4946
4947 1) ACPI CA Core Subsystem:
4948
4949 Designed and implemented a mechanism to validate predefined ACPI methods
4950 and
4951 objects. This code validates the predefined ACPI objects (objects whose
4952 names
4953 start with underscore) that appear in the namespace, at the time they are
4954 evaluated. The argument count and the type of the returned object are
4955 validated against the ACPI specification. The purpose of this validation
4956 is
4957 to detect problems with the BIOS-implemented predefined ACPI objects
4958 before
4959 the results are returned to the ACPI-related drivers. Future enhancements
4960 may
4961 include actual repair of incorrect return objects where possible. Two new
4962 files are nspredef.c and acpredef.h.
4963
4964 Fixed a fault in the AML parser if a memory allocation fails during the
4965 Op
4966 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
4967
4968 Fixed an issue with implicit return compatibility. This change improves
4969 the
4970 implicit return mechanism to be more compatible with the MS interpreter.
4971 Lin
4972 Ming, ACPICA BZ 349.
4973
4974 Implemented support for zero-length buffer-to-string conversions. Allow
4975 zero
4976 length strings during interpreter buffer-to-string conversions. For
4977 example,
4978 during the ToDecimalString and ToHexString operators, as well as implicit
4979 conversions. Fiodor Suietov, ACPICA BZ 585.
4980
4981 Fixed two possible memory leaks in the error exit paths of
4982 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
4983 are
4984 similar in that they use a stack of state objects in order to eliminate
4985 recursion. The stack must be fully unwound and deallocated if an error
4986 occurs. Lin Ming. ACPICA BZ 383.
4987
4988 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
4989 global
4990 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
4991 Moore ACPICA BZ 442.
4992
4993 Removed the obsolete version number in module headers. Removed the
4994 "$Revision" number that appeared in each module header. This version
4995 number
4996 was useful under SourceSafe and CVS, but has no meaning under git. It is
4997 not
4998 only incorrect, it could also be misleading.
4999
5000 Example Code and Data Size: These are the sizes for the OS-independent
5001 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5002 debug version of the code includes the debug output trace mechanism and
5003 has a
5004 much larger code and data size.
5005
5006 Previous Release:
5007 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5008 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
5009 Current Release:
5010 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
5011 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
5012
5013 ----------------------------------------
5014 29 August 2008. Summary of changes for version 20080829:
5015
5016 1) ACPI CA Core Subsystem:
5017
5018 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
5019 Reference. Changes include the elimination of cheating on the Object
5020 field
5021 for the DdbHandle subtype, addition of a reference class field to
5022 differentiate the various reference types (instead of an AML opcode), and
5023 the
5024 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
5025
5026 Reduce an error to a warning for an incorrect method argument count.
5027 Previously aborted with an error if too few arguments were passed to a
5028 control method via the external ACPICA interface. Now issue a warning
5029 instead
5030 and continue. Handles the case where the method inadvertently declares
5031 too
5032 many arguments, but does not actually use the extra ones. Applies mainly
5033 to
5034 the predefined methods. Lin Ming. Linux BZ 11032.
5035
5036 Disallow the evaluation of named object types with no intrinsic value.
5037 Return
5038 AE_TYPE for objects that have no value and therefore evaluation is
5039 undefined:
5040 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
5041 of
5042 these types were allowed, but an exception would be generated at some
5043 point
5044 during the evaluation. Now, the error is generated up front.
5045
5046 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
5047 (nsnames.c). Fixes a leak in the error exit path.
5048
5049 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
5050 debug
5051 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
5052 ACPI_EXCEPTION
5053 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
5054 ACPI_LV_EVENTS.
5055
5056 Removed obsolete and/or unused exception codes from the acexcep.h header.
5057 There is the possibility that certain device drivers may be affected if
5058 they
5059 use any of these exceptions.
5060
5061 The ACPICA documentation has been added to the public git source tree,
5062 under
5063 acpica/documents. Included are the ACPICA programmer reference, the iASL
5064 compiler reference, and the changes.txt release logfile.
5065
5066 Example Code and Data Size: These are the sizes for the OS-independent
5067 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5068 debug version of the code includes the debug output trace mechanism and
5069 has a
5070 much larger code and data size.
5071
5072 Previous Release:
5073 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5074 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
5075 Current Release:
5076 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5077 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
5078
5079 2) iASL Compiler/Disassembler and Tools:
5080
5081 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
5082 defines _SCP with 3 arguments. Previous versions defined it with only 1
5083 argument. iASL now allows both definitions.
5084
5085 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
5086 zero-
5087 length subtables when disassembling ACPI tables. Also fixed a couple of
5088 errors where a full 16-bit table type field was not extracted from the
5089 input
5090 properly.
5091
5092 acpisrc: Improve comment counting mechanism for generating source code
5093 statistics. Count first and last lines of multi-line comments as
5094 whitespace,
5095 not comment lines. Handle Linux legal header in addition to standard
5096 acpica
5097 header.
5098
5099 ----------------------------------------
5100
5101 29 July 2008. Summary of changes for version 20080729:
5102
5103 1) ACPI CA Core Subsystem:
5104
5105 Fix a possible deadlock in the GPE dispatch. Remove call to
5106 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
5107 attempt
5108 to acquire the GPE lock but can deadlock since the GPE lock is already
5109 held
5110 at dispatch time. This code was introduced in version 20060831 as a
5111 response
5112 to Linux BZ 6881 and has since been removed from Linux.
5113
5114 Add a function to dereference returned reference objects. Examines the
5115 return
5116 object from a call to AcpiEvaluateObject. Any Index or RefOf references
5117 are
5118 automatically dereferenced in an attempt to return something useful
5119 (these
5120 reference types cannot be converted into an external ACPI_OBJECT.)
5121 Provides
5122 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
5123
5124 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
5125 subtables for the MADT and one new subtable for the SRAT. Includes
5126 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
5127 x2APIC
5128 Specification, June 2008.
5129
5130 Additional error checking for pathname utilities. Add error check after
5131 all
5132 calls to AcpiNsGetPathnameLength. Add status return from
5133 AcpiNsBuildExternalPath and check after all calls. Add parameter
5134 validation
5135 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
5136
5137 Return status from the global init function AcpiUtGlobalInitialize. This
5138 is
5139 used by both the kernel subsystem and the utilities such as iASL
5140 compiler.
5141 The function could possibly fail when the caches are initialized. Yang
5142 Yi.
5143
5144 Add a function to decode reference object types to strings. Created for
5145 improved error messages.
5146
5147 Improve object conversion error messages. Better error messages during
5148 object
5149 conversion from internal to the external ACPI_OBJECT. Used for external
5150 calls
5151 to AcpiEvaluateObject.
5152
5153 Example Code and Data Size: These are the sizes for the OS-independent
5154 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5155 debug version of the code includes the debug output trace mechanism and
5156 has a
5157 much larger code and data size.
5158
5159 Previous Release:
5160 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
5161 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
5162 Current Release:
5163 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5164 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
5165
5166 2) iASL Compiler/Disassembler and Tools:
5167
5168 Debugger: fix a possible hang when evaluating non-methods. Fixes a
5169 problem
5170 introduced in version 20080701. If the object being evaluated (via
5171 execute
5172 command) is not a method, the debugger can hang while trying to obtain
5173 non-
5174 existent parameters.
5175
5176 iASL: relax error for using reserved "_T_x" identifiers. These names can
5177 appear in a disassembled ASL file if they were emitted by the original
5178 compiler. Instead of issuing an error or warning and forcing the user to
5179 manually change these names, issue a remark instead.
5180
5181 iASL: error if named object created in while loop. Emit an error if any
5182 named
5183 object is created within a While loop. If allowed, this code will
5184 generate
5185 a
5186 run-time error on the second iteration of the loop when an attempt is
5187 made
5188 to
5189 create the same named object twice. ACPICA bugzilla 730.
5190
5191 iASL: Support absolute pathnames for include files. Add support for
5192 absolute
5193 pathnames within the Include operator. previously, only relative
5194 pathnames
5195 were supported.
5196
5197 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
5198 Descriptor.
5199 The ACPI spec requires one interrupt minimum. BZ 423
5200
5201 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
5202 Handles the case for the Interrupt Resource Descriptor where
5203 the ResourceSource argument is omitted but ResourceSourceIndex
5204 is present. Now leave room for the Index. BZ 426
5205
5206 iASL: Prevent error message if CondRefOf target does not exist. Fixes
5207 cases
5208 where an error message is emitted if the target does not exist. BZ 516
5209
5210 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
5211 (get ACPI tables on Windows). This was apparently broken in version
5212 20070919.
5213
5214 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
5215 where
5216 the EOF happens immediately after the last table in the input file. Print
5217 completion message. Previously, no message was displayed in this case.
5218
5219 ----------------------------------------
5220 01 July 2008. Summary of changes for version 20080701:
5221
5222 0) Git source tree / acpica.org
5223
5224 Fixed a problem where a git-clone from http would not transfer the entire
5225 source tree.
5226
5227 1) ACPI CA Core Subsystem:
5228
5229 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
5230 enable bit. Now performs a read-change-write of the enable register
5231 instead
5232 of simply writing out the cached enable mask. This will prevent
5233 inadvertent
5234 enabling of GPEs if a rogue GPE is received during initialization (before
5235 GPE
5236 handlers are installed.)
5237
5238 Implemented a copy for dynamically loaded tables. Previously, dynamically
5239 loaded tables were simply mapped - but on some machines this memory is
5240 corrupted after suspend. Now copy the table to a local buffer. For the
5241 OpRegion case, added checksum verify. Use the table length from the table
5242 header, not the region length. For the Buffer case, use the table length
5243 also. Dennis Noordsij, Bob Moore. BZ 10734
5244
5245 Fixed a problem where the same ACPI table could not be dynamically loaded
5246 and
5247 unloaded more than once. Without this change, a table cannot be loaded
5248 again
5249 once it has been loaded/unloaded one time. The current mechanism does not
5250 unregister a table upon an unload. During a load, if the same table is
5251 found,
5252 this no longer returns an exception. BZ 722
5253
5254 Fixed a problem where the wrong descriptor length was calculated for the
5255 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
5256 EndTag
5257 are calculated as 12 bytes long, but the actual length in the internal
5258 descriptor is 16 because of the round-up to 8 on the 64-bit build.
5259 Reported
5260 by Linn Crosetto. BZ 728
5261
5262 Fixed a possible memory leak in the Unload operator. The DdbHandle
5263 returned
5264 by Load() did not have its reference count decremented during unload,
5265 leading
5266 to a memory leak. Lin Ming. BZ 727
5267
5268 Fixed a possible memory leak when deleting thermal/processor objects. Any
5269 associated notify handlers (and objects) were not being deleted. Fiodor
5270 Suietov. BZ 506
5271
5272 Fixed the ordering of the ASCII names in the global mutex table to match
5273 the
5274 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
5275 only.
5276 Vegard Nossum. BZ 726
5277
5278 Enhanced the AcpiGetObjectInfo interface to return the number of required
5279 arguments if the object is a control method. Added this call to the
5280 debugger
5281 so the proper number of default arguments are passed to a method. This
5282 prevents a warning when executing methods from AcpiExec.
5283
5284 Added a check for an invalid handle in AcpiGetObjectInfo. Return
5285 AE_BAD_PARAMETER if input handle is invalid. BZ 474
5286
5287 Fixed an extraneous warning from exconfig.c on the 64-bit build.
5288
5289 Example Code and Data Size: These are the sizes for the OS-independent
5290 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5291 debug version of the code includes the debug output trace mechanism and
5292 has a
5293 much larger code and data size.
5294
5295 Previous Release:
5296 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
5297 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
5298 Current Release:
5299 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
5300 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
5301
5302 2) iASL Compiler/Disassembler and Tools:
5303
5304 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
5305 resource descriptor names.
5306
5307 iASL: Detect invalid ASCII characters in input (windows version). Removed
5308 the
5309 "-CF" flag from the flex compile, enables correct detection of non-ASCII
5310 characters in the input. BZ 441
5311
5312 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
5313 the
5314 "result of operation not used" warning when the DDB handle returned from
5315 LoadTable is not used. The warning is not needed. BZ 590
5316
5317 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
5318 method
5319 to
5320 pass address of table to the AML. Added option to disable OpRegion
5321 simulation
5322 to allow creation of an OpRegion with a real address that was passed to
5323 _CFG.
5324 All of this allows testing of the Load and Unload operators from
5325 AcpiExec.
5326
5327 Debugger: update tables command for unloaded tables. Handle unloaded
5328 tables
5329 and use the standard table header output routine.
5330
5331 ----------------------------------------
5332 09 June 2008. Summary of changes for version 20080609:
5333
5334 1) ACPI CA Core Subsystem:
5335
5336 Implemented a workaround for reversed _PRT entries. A significant number
5337 of
5338 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
5339 change dynamically detects and repairs this problem. Provides
5340 compatibility
5341 with MS ACPI. BZ 6859
5342
5343 Simplified the internal ACPI hardware interfaces to eliminate the locking
5344 flag parameter from Register Read/Write. Added a new external interface,
5345 AcpiGetRegisterUnlocked.
5346
5347 Fixed a problem where the invocation of a GPE control method could hang.
5348 This
5349 was a regression introduced in 20080514. The new method argument count
5350 validation mechanism can enter an infinite loop when a GPE method is
5351 dispatched. Problem fixed by removing the obsolete code that passed GPE
5352 block
5353 information to the notify handler via the control method parameter
5354 pointer.
5355
5356 Fixed a problem where the _SST execution status was incorrectly returned
5357 to
5358 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
5359 in
5360 20080514. _SST is optional and a NOT_FOUND exception should never be
5361 returned. BZ 716
5362
5363 Fixed a problem where a deleted object could be accessed from within the
5364 AML
5365 parser. This was a regression introduced in version 20080123 as a fix for
5366 the
5367 Unload operator. Lin Ming. BZ 10669
5368
5369 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
5370 operands
5371 and eliminated the use of a negative index in a loop. Operands are now
5372 displayed in the correct order, not backwards. This also fixes a
5373 regression
5374 introduced in 20080514 on 64-bit systems where the elimination of
5375 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
5376 715
5377
5378 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
5379 exit
5380 path did not delete a locally allocated structure.
5381
5382 Updated definitions for the DMAR and SRAT tables to synchronize with the
5383 current specifications. Includes disassembler support.
5384
5385 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
5386 loop termination value was used. Loop terminated on iteration early,
5387 missing
5388 one mutex. Linn Crosetto
5389
5390 Example Code and Data Size: These are the sizes for the OS-independent
5391 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5392 debug version of the code includes the debug output trace mechanism and
5393 has a
5394 much larger code and data size.
5395
5396 Previous Release:
5397 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
5398 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
5399 Current Release:
5400 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
5401 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
5402
5403 2) iASL Compiler/Disassembler and Tools:
5404
5405 Disassembler: Implemented support for EisaId() within _CID objects. Now
5406 disassemble integer _CID objects back to EisaId invocations, including
5407 multiple integers within _CID packages. Includes single-step support for
5408 debugger also.
5409
5410 Disassembler: Added support for DMAR and SRAT table definition changes.
5411
5412 ----------------------------------------
5413 14 May 2008. Summary of changes for version 20080514:
5414
5415 1) ACPI CA Core Subsystem:
5416
5417 Fixed a problem where GPEs were enabled too early during the ACPICA
5418 initialization. This could lead to "handler not installed" errors on some
5419 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
5420 This
5421 ensures that all operation regions and devices throughout the namespace
5422 have
5423 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
5424
5425 Implemented a change to the enter sleep code. Moved execution of the _GTS
5426 method to just before setting sleep enable bit. The execution was moved
5427 from
5428 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
5429 immediately before the SLP_EN bit is set, as per the ACPI specification.
5430 Luming Yu, BZ 1653.
5431
5432 Implemented a fix to disable unknown GPEs (2nd version). Now always
5433 disable
5434 the GPE, even if ACPICA thinks that that it is already disabled. It is
5435 possible that the AML or some other code has enabled the GPE unbeknownst
5436 to
5437 the ACPICA code.
5438
5439 Fixed a problem with the Field operator where zero-length fields would
5440 return
5441 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
5442 ASL
5443 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
5444
5445 Implemented a fix for the Load operator, now load the table at the
5446 namespace
5447 root. This reverts a change introduced in version 20071019. The table is
5448 now
5449 loaded at the namespace root even though this goes against the ACPI
5450 specification. This provides compatibility with other ACPI
5451 implementations.
5452 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
5453 Ming.
5454
5455 Fixed a problem where ACPICA would not Load() tables with unusual
5456 signatures.
5457 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
5458 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
5459 Therefore, signature validation is worthless. Apparently MS ACPI accepts
5460 such
5461 signatures, ACPICA must be compatible. BZ 10454.
5462
5463 Fixed a possible negative array index in AcpiUtValidateException. Added
5464 NULL
5465 fields to the exception string arrays to eliminate a -1 subtraction on
5466 the
5467 SubStatus field.
5468
5469 Updated the debug tracking macros to reduce overall code and data size.
5470 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
5471 instead of pointers to static strings. Jan Beulich and Bob Moore.
5472
5473 Implemented argument count checking in control method invocation via
5474 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
5475 too
5476 many. This applies only to extern programmatic control method execution,
5477 not
5478 method-to-method calls within the AML. Lin Ming.
5479
5480 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
5481 no
5482 longer needed, especially with the removal of 16-bit support. It was
5483 replaced
5484 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
5485 bit
5486 on
5487 32/64-bit platforms is required.
5488
5489 Added the C const qualifier for appropriate string constants -- mostly
5490 MODULE_NAME and printf format strings. Jan Beulich.
5491
5492 Example Code and Data Size: These are the sizes for the OS-independent
5493 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5494 debug version of the code includes the debug output trace mechanism and
5495 has a
5496 much larger code and data size.
5497
5498 Previous Release:
5499 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
5500 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
5501 Current Release:
5502 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
5503 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
5504
5505 2) iASL Compiler/Disassembler and Tools:
5506
5507 Implemented ACPI table revision ID validation in the disassembler. Zero
5508 is
5509 always invalid. For DSDTs, the ID controls the interpreter integer width.
5510 1
5511 means 32-bit and this is unusual. 2 or greater is 64-bit.
5512
5513 ----------------------------------------
5514 21 March 2008. Summary of changes for version 20080321:
5515
5516 1) ACPI CA Core Subsystem:
5517
5518 Implemented an additional change to the GPE support in order to suppress
5519 spurious or stray GPEs. The AcpiEvDisableGpe function will now
5520 permanently
5521 disable incoming GPEs that are neither enabled nor disabled -- meaning
5522 that
5523 the GPE is unknown to the system. This should prevent future interrupt
5524 floods
5525 from that GPE. BZ 6217 (Zhang Rui)
5526
5527 Fixed a problem where NULL package elements were not returned to the
5528 AcpiEvaluateObject interface correctly. The element was simply ignored
5529 instead of returning a NULL ACPI_OBJECT package element, potentially
5530 causing
5531 a buffer overflow and/or confusing the caller who expected a fixed number
5532 of
5533 elements. BZ 10132 (Lin Ming, Bob Moore)
5534
5535 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
5536 Dword,
5537 Qword), Field, BankField, and IndexField operators when invoked from
5538 inside
5539 an executing control method. In this case, these operators created
5540 namespace
5541 nodes that were incorrectly left marked as permanent nodes instead of
5542 temporary nodes. This could cause a problem if there is race condition
5543 between an exiting control method and a running namespace walk. (Reported
5544 by
5545 Linn Crosetto)
5546
5547 Fixed a problem where the CreateField and CreateXXXField operators would
5548 incorrectly allow duplicate names (the name of the field) with no
5549 exception
5550 generated.
5551
5552 Implemented several changes for Notify handling. Added support for new
5553 Notify
5554 values (ACPI 2.0+) and improved the Notify debug output. Notify on
5555 PowerResource objects is no longer allowed, as per the ACPI
5556 specification.
5557 (Bob Moore, Zhang Rui)
5558
5559 All Reference Objects returned via the AcpiEvaluateObject interface are
5560 now
5561 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
5562 for
5563 NULL objects - either NULL package elements or unresolved named
5564 references.
5565
5566 Fixed a problem where an extraneous debug message was produced for
5567 package
5568 objects (when debugging enabled). The message "Package List length larger
5569 than NumElements count" is now produced in the correct case, and is now
5570 an
5571 error message rather than a debug message. Added a debug message for the
5572 opposite case, where NumElements is larger than the Package List (the
5573 package
5574 will be padded out with NULL elements as per the ACPI spec.)
5575
5576 Implemented several improvements for the output of the ASL "Debug" object
5577 to
5578 clarify and keep all data for a given object on one output line.
5579
5580 Fixed two size calculation issues with the variable-length Start
5581 Dependent
5582 resource descriptor.
5583
5584 Example Code and Data Size: These are the sizes for the OS-independent
5585 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5586 debug version of the code includes the debug output trace mechanism and
5587 has
5588 a much larger code and data size.
5589
5590 Previous Release:
5591 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
5592 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
5593 Current Release:
5594 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
5595 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
5596
5597 2) iASL Compiler/Disassembler and Tools:
5598
5599 Fixed a problem with the use of the Switch operator where execution of
5600 the
5601 containing method by multiple concurrent threads could cause an
5602 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
5603 actual Switch opcode, it must be simulated with local named temporary
5604 variables and if/else pairs. The solution chosen was to mark any method
5605 that
5606 uses Switch as Serialized, thus preventing multiple thread entries. BZ
5607 469.
5608
5609 ----------------------------------------
5610 13 February 2008. Summary of changes for version 20080213:
5611
5612 1) ACPI CA Core Subsystem:
5613
5614 Implemented another MS compatibility design change for GPE/Notify
5615 handling.
5616 GPEs are now cleared/enabled asynchronously to allow all pending notifies
5617 to
5618 complete first. It is expected that the OSL will queue the enable request
5619 behind all pending notify requests (may require changes to the local host
5620 OSL
5621 in AcpiOsExecute). Alexey Starikovskiy.
5622
5623 Fixed a problem where buffer and package objects passed as arguments to a
5624 control method via the external AcpiEvaluateObject interface could cause
5625 an
5626 AE_AML_INTERNAL exception depending on the order and type of operators
5627 executed by the target control method.
5628
5629 Fixed a problem where resource descriptor size optimization could cause a
5630 problem when a _CRS resource template is passed to a _SRS method. The
5631 _SRS
5632 resource template must use the same descriptors (with the same size) as
5633 returned from _CRS. This change affects the following resource
5634 descriptors:
5635 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
5636 9487)
5637
5638 Fixed a problem where a CopyObject to RegionField, BankField, and
5639 IndexField
5640 objects did not perform an implicit conversion as it should. These types
5641 must
5642 retain their initial type permanently as per the ACPI specification.
5643 However,
5644 a CopyObject to all other object types should not perform an implicit
5645 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
5646
5647 Fixed a problem with the AcpiGetDevices interface where the mechanism to
5648 match device CIDs did not examine the entire list of available CIDs, but
5649 instead aborted on the first non-matching CID. Andrew Patterson.
5650
5651 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
5652 was
5653 inadvertently changed to return a 16-bit value instead of a 32-bit value,
5654 truncating the upper dword of a 64-bit value. This macro is only used to
5655 display debug output, so no incorrect calculations were made. Also,
5656 reimplemented the macro so that a 64-bit shift is not performed by
5657 inefficient compilers.
5658
5659 Added missing va_end statements that should correspond with each va_start
5660 statement.
5661
5662 Example Code and Data Size: These are the sizes for the OS-independent
5663 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5664 debug version of the code includes the debug output trace mechanism and
5665 has
5666 a much larger code and data size.
5667
5668 Previous Release:
5669 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
5670 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
5671 Current Release:
5672 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
5673 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
5674
5675 2) iASL Compiler/Disassembler and Tools:
5676
5677 Implemented full disassembler support for the following new ACPI tables:
5678 BERT, EINJ, and ERST. Implemented partial disassembler support for the
5679 complicated HEST table. These tables support the Windows Hardware Error
5680 Architecture (WHEA).
5681
5682 ----------------------------------------
5683 23 January 2008. Summary of changes for version 20080123:
5684
5685 1) ACPI CA Core Subsystem:
5686
5687 Added the 2008 copyright to all module headers and signons. This affects
5688 virtually every file in the ACPICA core subsystem, the iASL compiler, and
5689 the tools/utilities.
5690
5691 Fixed a problem with the SizeOf operator when used with Package and
5692 Buffer
5693 objects. These objects have deferred execution for some arguments, and
5694 the
5695 execution is now completed before the SizeOf is executed. This problem
5696 caused
5697 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
5698 BZ
5699 9558
5700
5701 Implemented an enhancement to the interpreter "slack mode". In the
5702 absence
5703 of
5704 an explicit return or an implicitly returned object from the last
5705 executed
5706 opcode, a control method will now implicitly return an integer of value 0
5707 for
5708 Microsoft compatibility. (Lin Ming) BZ 392
5709
5710 Fixed a problem with the Load operator where an exception was not
5711 returned
5712 in
5713 the case where the table is already loaded. (Lin Ming) BZ 463
5714
5715 Implemented support for the use of DDBHandles as an Indexed Reference, as
5716 per
5717 the ACPI spec. (Lin Ming) BZ 486
5718
5719 Implemented support for UserTerm (Method invocation) for the Unload
5720 operator
5721 as per the ACPI spec. (Lin Ming) BZ 580
5722
5723 Fixed a problem with the LoadTable operator where the OemId and
5724 OemTableId
5725 input strings could cause unexpected failures if they were shorter than
5726 the
5727 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
5728
5729 Implemented support for UserTerm (Method invocation) for the Unload
5730 operator
5731 as per the ACPI spec. (Lin Ming) BZ 580
5732
5733 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
5734 HEST,
5735 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
5736
5737 Example Code and Data Size: These are the sizes for the OS-independent
5738 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5739 debug version of the code includes the debug output trace mechanism and
5740 has
5741 a much larger code and data size.
5742
5743 Previous Release:
5744 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
5745 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
5746 Current Release:
5747 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
5748 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
5749
5750 2) iASL Compiler/Disassembler and Tools:
5751
5752 Implemented support in the disassembler for checksum validation on
5753 incoming
5754 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
5755 table
5756 header dump at the start of the disassembly.
5757
5758 Implemented additional debugging information in the namespace listing
5759 file
5760 created during compilation. In addition to the namespace hierarchy, the
5761 full
5762 pathname to each namespace object is displayed.
5763
5764 Fixed a problem with the disassembler where invalid ACPI tables could
5765 cause
5766 faults or infinite loops.
5767
5768 Fixed an unexpected parse error when using the optional "parameter types"
5769 list in a control method declaration. (Lin Ming) BZ 397
5770
5771 Fixed a problem where two External declarations with the same name did
5772 not
5773 cause an error (Lin Ming) BZ 509
5774
5775 Implemented support for full TermArgs (adding Argx, Localx and method
5776 invocation) for the ParameterData parameter to the LoadTable operator.
5777 (Lin
5778 Ming) BZ 583,587
5779
5780 ----------------------------------------
5781 19 December 2007. Summary of changes for version 20071219:
5782
5783 1) ACPI CA Core Subsystem:
5784
5785 Implemented full support for deferred execution for the TermArg string
5786 arguments for DataTableRegion. This enables forward references and full
5787 operand resolution for the three string arguments. Similar to
5788 OperationRegion
5789 deferred argument execution.) Lin Ming. BZ 430
5790
5791 Implemented full argument resolution support for the BankValue argument
5792 to
5793 BankField. Previously, only constants were supported, now any TermArg may
5794 be
5795 used. Lin Ming BZ 387, 393
5796
5797 Fixed a problem with AcpiGetDevices where the search of a branch of the
5798 device tree could be terminated prematurely. In accordance with the ACPI
5799 specification, the search down the current branch is terminated if a
5800 device
5801 is both not present and not functional (instead of just not present.)
5802 Yakui
5803 Zhao.
5804
5805 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
5806 if
5807 the underlying AML code changed the GPE enable registers. Now, any
5808 unknown
5809 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
5810 disabled
5811 instead of simply ignored. Rui Zhang.
5812
5813 Fixed a problem with Index Fields where the Index register was
5814 incorrectly
5815 limited to a maximum of 32 bits. Now any size may be used.
5816
5817 Fixed a couple memory leaks associated with "implicit return" objects
5818 when
5819 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
5820
5821 Example Code and Data Size: These are the sizes for the OS-independent
5822 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5823 debug version of the code includes the debug output trace mechanism and
5824 has
5825 a much larger code and data size.
5826
5827 Previous Release:
5828 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
5829 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
5830 Current Release:
5831 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
5832 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
5833
5834 ----------------------------------------
5835 14 November 2007. Summary of changes for version 20071114:
5836
5837 1) ACPI CA Core Subsystem:
5838
5839 Implemented event counters for each of the Fixed Events, the ACPI SCI
5840 (interrupt) itself, and control methods executed. Named
5841 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
5842 These
5843 should be useful for debugging and statistics.
5844
5845 Implemented a new external interface, AcpiGetStatistics, to retrieve the
5846 contents of the various event counters. Returns the current values for
5847 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
5848 AcpiMethodCount. The interface can be expanded in the future if new
5849 counters
5850 are added. Device drivers should use this interface rather than access
5851 the
5852 counters directly.
5853
5854 Fixed a problem with the FromBCD and ToBCD operators. With some
5855 compilers,
5856 the ShortDivide function worked incorrectly, causing problems with the
5857 BCD
5858 functions with large input values. A truncation from 64-bit to 32-bit
5859 inadvertently occurred. Internal BZ 435. Lin Ming
5860
5861 Fixed a problem with Index references passed as method arguments.
5862 References
5863 passed as arguments to control methods were dereferenced immediately
5864 (before
5865 control was passed to the called method). The references are now
5866 correctly
5867 passed directly to the called method. BZ 5389. Lin Ming
5868
5869 Fixed a problem with CopyObject used in conjunction with the Index
5870 operator.
5871 The reference was incorrectly dereferenced before the copy. The reference
5872 is
5873 now correctly copied. BZ 5391. Lin Ming
5874
5875 Fixed a problem with Control Method references within Package objects.
5876 These
5877 references are now correctly generated. This completes the package
5878 construction overhaul that began in version 20071019.
5879
5880 Example Code and Data Size: These are the sizes for the OS-independent
5881 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5882 debug version of the code includes the debug output trace mechanism and
5883 has
5884 a much larger code and data size.
5885
5886 Previous Release:
5887 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
5888 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
5889 Current Release:
5890 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
5891 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
5892
5893
5894 2) iASL Compiler/Disassembler and Tools:
5895
5896 The AcpiExec utility now installs handlers for all of the predefined
5897 Operation Region types. New types supported are: PCI_Config, CMOS, and
5898 PCIBARTarget.
5899
5900 Fixed a problem with the 64-bit version of AcpiExec where the extended
5901 (64-
5902 bit) address fields for the DSDT and FACS within the FADT were not being
5903 used, causing truncation of the upper 32-bits of these addresses. Lin
5904 Ming
5905 and Bob Moore
5906
5907 ----------------------------------------
5908 19 October 2007. Summary of changes for version 20071019:
5909
5910 1) ACPI CA Core Subsystem:
5911
5912 Fixed a problem with the Alias operator when the target of the alias is a
5913 named ASL operator that opens a new scope -- Scope, Device,
5914 PowerResource,
5915 Processor, and ThermalZone. In these cases, any children of the original
5916 operator could not be accessed via the alias, potentially causing
5917 unexpected
5918 AE_NOT_FOUND exceptions. (BZ 9067)
5919
5920 Fixed a problem with the Package operator where all named references were
5921 created as object references and left otherwise unresolved. According to
5922 the
5923 ACPI specification, a Package can only contain Data Objects or references
5924 to
5925 control methods. The implication is that named references to Data Objects
5926 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
5927 immediately upon package creation. This is the approach taken with this
5928 change. References to all other named objects (Methods, Devices, Scopes,
5929 etc.) are all now properly created as reference objects. (BZ 5328)
5930
5931 Reverted a change to Notify handling that was introduced in version
5932 20070508. This version changed the Notify handling from asynchronous to
5933 fully synchronous (Device driver Notify handling with respect to the
5934 Notify
5935 ASL operator). It was found that this change caused more problems than it
5936 solved and was removed by most users.
5937
5938 Fixed a problem with the Increment and Decrement operators where the type
5939 of
5940 the target object could be unexpectedly and incorrectly changed. (BZ 353)
5941 Lin Ming.
5942
5943 Fixed a problem with the Load and LoadTable operators where the table
5944 location within the namespace was ignored. Instead, the table was always
5945 loaded into the root or current scope. Lin Ming.
5946
5947 Fixed a problem with the Load operator when loading a table from a buffer
5948 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
5949
5950 Fixed a problem with the Debug object where a store of a DdbHandle
5951 reference
5952 object to the Debug object could cause a fault.
5953
5954 Added a table checksum verification for the Load operator, in the case
5955 where
5956 the load is from a buffer. (BZ 578).
5957
5958 Implemented additional parameter validation for the LoadTable operator.
5959 The
5960 length of the input strings SignatureString, OemIdString, and OemTableId
5961 are
5962 now checked for maximum lengths. (BZ 582) Lin Ming.
5963
5964 Example Code and Data Size: These are the sizes for the OS-independent
5965 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5966 debug version of the code includes the debug output trace mechanism and
5967 has
5968 a much larger code and data size.
5969
5970 Previous Release:
5971 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
5972 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
5973 Current Release:
5974 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
5975 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
5976
5977
5978 2) iASL Compiler/Disassembler:
5979
5980 Fixed a problem where if a single file was specified and the file did not
5981 exist, no error message was emitted. (Introduced with wildcard support in
5982 version 20070917.)
5983
5984 ----------------------------------------
5985 19 September 2007. Summary of changes for version 20070919:
5986
5987 1) ACPI CA Core Subsystem:
5988
5989 Designed and implemented new external interfaces to install and remove
5990 handlers for ACPI table-related events. Current events that are defined
5991 are
5992 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
5993 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
5994 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
5995
5996 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
5997 (acpi_serialized option on Linux) could cause some systems to hang during
5998 initialization. (Bob Moore) BZ 8171
5999
6000 Fixed a problem where objects of certain types (Device, ThermalZone,
6001 Processor, PowerResource) can be not found if they are declared and
6002 referenced from within the same control method (Lin Ming) BZ 341
6003
6004 Example Code and Data Size: These are the sizes for the OS-independent
6005 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6006 debug version of the code includes the debug output trace mechanism and
6007 has
6008 a much larger code and data size.
6009
6010 Previous Release:
6011 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
6012 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
6013 Current Release:
6014 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
6015 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
6016
6017
6018 2) iASL Compiler/Disassembler:
6019
6020 Implemented support to allow multiple files to be compiled/disassembled
6021 in
6022 a
6023 single invocation. This includes command line wildcard support for both
6024 the
6025 Windows and Unix versions of the compiler. This feature simplifies the
6026 disassembly and compilation of multiple ACPI tables in a single
6027 directory.
6028
6029 ----------------------------------------
6030 08 May 2007. Summary of changes for version 20070508:
6031
6032 1) ACPI CA Core Subsystem:
6033
6034 Implemented a Microsoft compatibility design change for the handling of
6035 the
6036 Notify AML operator. Previously, notify handlers were dispatched and
6037 executed completely asynchronously in a deferred thread. The new design
6038 still executes the notify handlers in a different thread, but the
6039 original
6040 thread that executed the Notify() now waits at a synchronization point
6041 for
6042 the notify handler to complete. Some machines depend on a synchronous
6043 Notify
6044 operator in order to operate correctly.
6045
6046 Implemented support to allow Package objects to be passed as method
6047 arguments to the external AcpiEvaluateObject interface. Previously, this
6048 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
6049 implemented since there were no reserved control methods that required it
6050 until recently.
6051
6052 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
6053 that
6054 contained invalid non-zero values in reserved fields could cause later
6055 failures because these fields have meaning in later revisions of the
6056 FADT.
6057 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
6058 fields
6059 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
6060
6061 Fixed a problem where the Global Lock handle was not properly updated if
6062 a
6063 thread that acquired the Global Lock via executing AML code then
6064 attempted
6065 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
6066 Joe
6067 Liu.
6068
6069 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
6070 could be corrupted if the interrupt being removed was at the head of the
6071 list. Reported by Linn Crosetto.
6072
6073 Example Code and Data Size: These are the sizes for the OS-independent
6074 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6075 debug version of the code includes the debug output trace mechanism and
6076 has
6077 a much larger code and data size.
6078
6079 Previous Release:
6080 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6081 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
6082 Current Release:
6083 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
6084 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
6085
6086 ----------------------------------------
6087 20 March 2007. Summary of changes for version 20070320:
6088
6089 1) ACPI CA Core Subsystem:
6090
6091 Implemented a change to the order of interpretation and evaluation of AML
6092 operand objects within the AML interpreter. The interpreter now evaluates
6093 operands in the order that they appear in the AML stream (and the
6094 corresponding ASL code), instead of in the reverse order (after the
6095 entire
6096 operand list has been parsed). The previous behavior caused several
6097 subtle
6098 incompatibilities with the Microsoft AML interpreter as well as being
6099 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
6100
6101 Implemented a change to the ACPI Global Lock support. All interfaces to
6102 the
6103 global lock now allow the same thread to acquire the lock multiple times.
6104 This affects the AcpiAcquireGlobalLock external interface to the global
6105 lock
6106 as well as the internal use of the global lock to support AML fields -- a
6107 control method that is holding the global lock can now simultaneously
6108 access
6109 AML fields that require global lock protection. Previously, in both
6110 cases,
6111 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
6112 to
6113 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
6114 Controller. There is no change to the behavior of the AML Acquire
6115 operator,
6116 as this can already be used to acquire a mutex multiple times by the same
6117 thread. BZ 8066. With assistance from Alexey Starikovskiy.
6118
6119 Fixed a problem where invalid objects could be referenced in the AML
6120 Interpreter after error conditions. During operand evaluation, ensure
6121 that
6122 the internal "Return Object" field is cleared on error and only valid
6123 pointers are stored there. Caused occasional access to deleted objects
6124 that
6125 resulted in "large reference count" warning messages. Valery Podrezov.
6126
6127 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
6128 on
6129 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
6130 Podrezov.
6131
6132 Fixed an internal problem with the handling of result objects on the
6133 interpreter result stack. BZ 7872. Valery Podrezov.
6134
6135 Removed obsolete code that handled the case where AML_NAME_OP is the
6136 target
6137 of a reference (Reference.Opcode). This code was no longer necessary. BZ
6138 7874. Valery Podrezov.
6139
6140 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
6141 was
6142 a
6143 remnant from the previously discontinued 16-bit support.
6144
6145 Example Code and Data Size: These are the sizes for the OS-independent
6146 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6147 debug version of the code includes the debug output trace mechanism and
6148 has
6149 a much larger code and data size.
6150
6151 Previous Release:
6152 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6153 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6154 Current Release:
6155 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6156 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
6157
6158 ----------------------------------------
6159 26 January 2007. Summary of changes for version 20070126:
6160
6161 1) ACPI CA Core Subsystem:
6162
6163 Added the 2007 copyright to all module headers and signons. This affects
6164 virtually every file in the ACPICA core subsystem, the iASL compiler, and
6165 the utilities.
6166
6167 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
6168 during a table load. A bad pointer was passed in the case where the DSDT
6169 is
6170 overridden, causing a fault in this case.
6171
6172 Example Code and Data Size: These are the sizes for the OS-independent
6173 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6174 debug version of the code includes the debug output trace mechanism and
6175 has
6176 a much larger code and data size.
6177
6178 Previous Release:
6179 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6180 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6181 Current Release:
6182 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6183 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6184
6185 ----------------------------------------
6186 15 December 2006. Summary of changes for version 20061215:
6187
6188 1) ACPI CA Core Subsystem:
6189
6190 Support for 16-bit ACPICA has been completely removed since it is no
6191 longer
6192 necessary and it clutters the code. All 16-bit macros, types, and
6193 conditional compiles have been removed, cleaning up and simplifying the
6194 code
6195 across the entire subsystem. DOS support is no longer needed since the
6196 bootable Linux firmware kit is now available.
6197
6198 The handler for the Global Lock is now removed during AcpiTerminate to
6199 enable a clean subsystem restart, via the implementation of the
6200 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
6201 HP)
6202
6203 Implemented enhancements to the multithreading support within the
6204 debugger
6205 to enable improved multithreading debugging and evaluation of the
6206 subsystem.
6207 (Valery Podrezov)
6208
6209 Debugger: Enhanced the Statistics/Memory command to emit the total
6210 (maximum)
6211 memory used during the execution, as well as the maximum memory consumed
6212 by
6213 each of the various object types. (Valery Podrezov)
6214
6215 Example Code and Data Size: These are the sizes for the OS-independent
6216 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6217 debug version of the code includes the debug output trace mechanism and
6218 has
6219 a much larger code and data size.
6220
6221 Previous Release:
6222 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
6223 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
6224 Current Release:
6225 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6226 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6227
6228
6229 2) iASL Compiler/Disassembler and Tools:
6230
6231 AcpiExec: Implemented a new option (-m) to display full memory use
6232 statistics upon subsystem/program termination. (Valery Podrezov)
6233
6234 ----------------------------------------
6235 09 November 2006. Summary of changes for version 20061109:
6236
6237 1) ACPI CA Core Subsystem:
6238
6239 Optimized the Load ASL operator in the case where the source operand is
6240 an
6241 operation region. Simply map the operation region memory, instead of
6242 performing a bytewise read. (Region must be of type SystemMemory, see
6243 below.)
6244
6245 Fixed the Load ASL operator for the case where the source operand is a
6246 region field. A buffer object is also allowed as the source operand. BZ
6247 480
6248
6249 Fixed a problem where the Load ASL operator allowed the source operand to
6250 be
6251 an operation region of any type. It is now restricted to regions of type
6252 SystemMemory, as per the ACPI specification. BZ 481
6253
6254 Additional cleanup and optimizations for the new Table Manager code.
6255
6256 AcpiEnable will now fail if all of the required ACPI tables are not
6257 loaded
6258 (FADT, FACS, DSDT). BZ 477
6259
6260 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
6261 this
6262 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
6263 manually optimized to be aligned and will not work if it is byte-packed.
6264
6265 Example Code and Data Size: These are the sizes for the OS-independent
6266 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6267 debug version of the code includes the debug output trace mechanism and
6268 has
6269 a much larger code and data size.
6270
6271 Previous Release:
6272 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
6273 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
6274 Current Release:
6275 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
6276 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
6277
6278
6279 2) iASL Compiler/Disassembler and Tools:
6280
6281 Fixed a problem where the presence of the _OSI predefined control method
6282 within complex expressions could cause an internal compiler error.
6283
6284 AcpiExec: Implemented full region support for multiple address spaces.
6285 SpaceId is now part of the REGION object. BZ 429
6286
6287 ----------------------------------------
6288 11 October 2006. Summary of changes for version 20061011:
6289
6290 1) ACPI CA Core Subsystem:
6291
6292 Completed an AML interpreter performance enhancement for control method
6293 execution. Previously a 2-pass parse/execution, control methods are now
6294 completely parsed and executed in a single pass. This improves overall
6295 interpreter performance by ~25%, reduces code size, and reduces CPU stack
6296 use. (Valery Podrezov + interpreter changes in version 20051202 that
6297 eliminated namespace loading during the pass one parse.)
6298
6299 Implemented _CID support for PCI Root Bridge detection. If the _HID does
6300 not
6301 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
6302 now
6303 obtained and also checked for an ID match.
6304
6305 Implemented additional support for the PCI _ADR execution: upsearch until
6306 a
6307 device scope is found before executing _ADR. This allows PCI_Config
6308 operation regions to be declared locally within control methods
6309 underneath
6310 PCI device objects.
6311
6312 Fixed a problem with a possible race condition between threads executing
6313 AcpiWalkNamespace and the AML interpreter. This condition was removed by
6314 modifying AcpiWalkNamespace to (by default) ignore all temporary
6315 namespace
6316 entries created during any concurrent control method execution. An
6317 additional namespace race condition is known to exist between
6318 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
6319 investigation.
6320
6321 Restructured the AML ParseLoop function, breaking it into several
6322 subfunctions in order to reduce CPU stack use and improve
6323 maintainability.
6324 (Mikhail Kouzmich)
6325
6326 AcpiGetHandle: Fix for parameter validation to detect invalid
6327 combinations
6328 of prefix handle and pathname. BZ 478
6329
6330 Example Code and Data Size: These are the sizes for the OS-independent
6331 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6332 debug version of the code includes the debug output trace mechanism and
6333 has
6334 a much larger code and data size.
6335
6336 Previous Release:
6337 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6338 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
6339 Current Release:
6340 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
6341 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
6342
6343 2) iASL Compiler/Disassembler and Tools:
6344
6345 Ported the -g option (get local ACPI tables) to the new ACPICA Table
6346 Manager
6347 to restore original behavior.
6348
6349 ----------------------------------------
6350 27 September 2006. Summary of changes for version 20060927:
6351
6352 1) ACPI CA Core Subsystem:
6353
6354 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
6355 These functions now use a spinlock for mutual exclusion and the interrupt
6356 level indication flag is not needed.
6357
6358 Fixed a problem with the Global Lock where the lock could appear to be
6359 obtained before it is actually obtained. The global lock semaphore was
6360 inadvertently created with one unit instead of zero units. (BZ 464)
6361 Fiodor
6362 Suietov.
6363
6364 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
6365 during
6366 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
6367
6368 Example Code and Data Size: These are the sizes for the OS-independent
6369 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6370 debug version of the code includes the debug output trace mechanism and
6371 has
6372 a much larger code and data size.
6373
6374 Previous Release:
6375 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6376 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
6377 Current Release:
6378 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6379 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
6380
6381
6382 2) iASL Compiler/Disassembler and Tools:
6383
6384 Fixed a compilation problem with the pre-defined Resource Descriptor
6385 field
6386 names where an "object does not exist" error could be incorrectly
6387 generated
6388 if the parent ResourceTemplate pathname places the template within a
6389 different namespace scope than the current scope. (BZ 7212)
6390
6391 Fixed a problem where the compiler could hang after syntax errors
6392 detected
6393 in an ElseIf construct. (BZ 453)
6394
6395 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
6396 operator. An incorrect output filename was produced when this parameter
6397 was
6398 a null string (""). Now, the original input filename is used as the AML
6399 output filename, with an ".aml" extension.
6400
6401 Implemented a generic batch command mode for the AcpiExec utility
6402 (execute
6403 any AML debugger command) (Valery Podrezov).
6404
6405 ----------------------------------------
6406 12 September 2006. Summary of changes for version 20060912:
6407
6408 1) ACPI CA Core Subsystem:
6409
6410 Enhanced the implementation of the "serialized mode" of the interpreter
6411 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
6412 specified, instead of creating a serialization semaphore per control
6413 method,
6414 the interpreter lock is simply no longer released before a blocking
6415 operation during control method execution. This effectively makes the AML
6416 Interpreter single-threaded. The overhead of a semaphore per-method is
6417 eliminated.
6418
6419 Fixed a regression where an error was no longer emitted if a control
6420 method
6421 attempts to create 2 objects of the same name. This once again returns
6422 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
6423 that
6424 will dynamically serialize the control method to possible prevent future
6425 errors. (BZ 440)
6426
6427 Integrated a fix for a problem with PCI Express HID detection in the PCI
6428 Config Space setup procedure. (BZ 7145)
6429
6430 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
6431 AcpiHwInitialize function - the FADT registers are now validated when the
6432 table is loaded.
6433
6434 Added two new warnings during FADT verification - 1) if the FADT is
6435 larger
6436 than the largest known FADT version, and 2) if there is a mismatch
6437 between
6438 a
6439 32-bit block address and the 64-bit X counterpart (when both are non-
6440 zero.)
6441
6442 Example Code and Data Size: These are the sizes for the OS-independent
6443 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6444 debug version of the code includes the debug output trace mechanism and
6445 has
6446 a much larger code and data size.
6447
6448 Previous Release:
6449 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
6450 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
6451 Current Release:
6452 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6453 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
6454
6455
6456 2) iASL Compiler/Disassembler and Tools:
6457
6458 Fixed a problem with the implementation of the Switch() operator where
6459 the
6460 temporary variable was declared too close to the actual Switch, instead
6461 of
6462 at method level. This could cause a problem if the Switch() operator is
6463 within a while loop, causing an error on the second iteration. (BZ 460)
6464
6465 Disassembler - fix for error emitted for unknown type for target of scope
6466 operator. Now, ignore it and continue.
6467
6468 Disassembly of an FADT now verifies the input FADT and reports any errors
6469 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
6470
6471 Disassembly of raw data buffers with byte initialization data now
6472 prefixes
6473 each output line with the current buffer offset.
6474
6475 Disassembly of ASF! table now includes all variable-length data fields at
6476 the end of some of the subtables.
6477
6478 The disassembler now emits a comment if a buffer appears to be a
6479 ResourceTemplate, but cannot be disassembled as such because the EndTag
6480 does
6481 not appear at the very end of the buffer.
6482
6483 AcpiExec - Added the "-t" command line option to enable the serialized
6484 mode
6485 of the AML interpreter.
6486
6487 ----------------------------------------
6488 31 August 2006. Summary of changes for version 20060831:
6489
6490 1) ACPI CA Core Subsystem:
6491
6492 Miscellaneous fixes for the Table Manager:
6493 - Correctly initialize internal common FADT for all 64-bit "X" fields
6494 - Fixed a couple table mapping issues during table load
6495 - Fixed a couple alignment issues for IA64
6496 - Initialize input array to zero in AcpiInitializeTables
6497 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
6498 AcpiGetTableByIndex
6499
6500 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
6501 now
6502 immediately disabled to prevent the waking GPE from firing again and to
6503 prevent other wake GPEs from interrupting the wake process.
6504
6505 Added the AcpiGpeCount global that tracks the number of processed GPEs,
6506 to
6507 be used for debugging systems with a large number of ACPI interrupts.
6508
6509 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
6510 both the ACPICA headers and the disassembler.
6511
6512 Example Code and Data Size: These are the sizes for the OS-independent
6513 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6514 debug version of the code includes the debug output trace mechanism and
6515 has
6516 a much larger code and data size.
6517
6518 Previous Release:
6519 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
6520 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
6521 Current Release:
6522 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
6523 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
6524
6525
6526 2) iASL Compiler/Disassembler and Tools:
6527
6528 Disassembler support for the DMAR ACPI table.
6529
6530 ----------------------------------------
6531 23 August 2006. Summary of changes for version 20060823:
6532
6533 1) ACPI CA Core Subsystem:
6534
6535 The Table Manager component has been completely redesigned and
6536 reimplemented. The new design is much simpler, and reduces the overall
6537 code
6538 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
6539 is
6540 now possible to obtain the ACPI tables very early during kernel
6541 initialization, even before dynamic memory management is initialized.
6542 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
6543
6544 Obsolete ACPICA interfaces:
6545
6546 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
6547 init
6548 time).
6549 - AcpiLoadTable: Not needed.
6550 - AcpiUnloadTable: Not needed.
6551
6552 New ACPICA interfaces:
6553
6554 - AcpiInitializeTables: Must be called before the table manager can be
6555 used.
6556 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
6557 allocated memory after it becomes available.
6558 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
6559 tables
6560 in the RSDT/XSDT.
6561
6562 Other ACPICA changes:
6563
6564 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
6565 Use
6566 AcpiOsUnmapMemory to free this mapping.
6567 - AcpiGetTable returns the actual mapped table. The mapping is managed
6568 internally and must not be deleted by the caller. Use of this interface
6569 causes no additional dynamic memory allocation.
6570 - AcpiFindRootPointer: Support for physical addressing has been
6571 eliminated,
6572 it appeared to be unused.
6573 - The interface to AcpiOsMapMemory has changed to be consistent with the
6574 other allocation interfaces.
6575 - The interface to AcpiOsGetRootPointer has changed to eliminate
6576 unnecessary
6577 parameters.
6578 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
6579 64-
6580 bit platforms. Was previously 64 bits on all platforms.
6581 - The interface to the ACPI Global Lock acquire/release macros have
6582 changed
6583 slightly since ACPICA no longer keeps a local copy of the FACS with a
6584 constructed pointer to the actual global lock.
6585
6586 Porting to the new table manager:
6587
6588 - AcpiInitializeTables: Must be called once, and can be called anytime
6589 during the OS initialization process. It allows the host to specify an
6590 area
6591 of memory to be used to store the internal version of the RSDT/XSDT (root
6592 table). This allows the host to access ACPI tables before memory
6593 management
6594 is initialized and running.
6595 - AcpiReallocateRootTable: Can be called after memory management is
6596 running
6597 to copy the root table to a dynamically allocated array, freeing up the
6598 scratch memory specified in the call to AcpiInitializeTables.
6599 - AcpiSubsystemInitialize: This existing interface is independent of the
6600 Table Manager, and does not have to be called before the Table Manager
6601 can
6602 be used, it only must be called before the rest of ACPICA can be used.
6603 - ACPI Tables: Some changes have been made to the names and structure of
6604 the
6605 actbl.h and actbl1.h header files and may require changes to existing
6606 code.
6607 For example, bitfields have been completely removed because of their lack
6608 of
6609 portability across C compilers.
6610 - Update interfaces to the Global Lock acquire/release macros if local
6611 versions are used. (see acwin.h)
6612
6613 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
6614
6615 New files: tbfind.c
6616
6617 Example Code and Data Size: These are the sizes for the OS-independent
6618 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6619 debug version of the code includes the debug output trace mechanism and
6620 has
6621 a much larger code and data size.
6622
6623 Previous Release:
6624 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
6625 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
6626 Current Release:
6627 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
6628 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
6629
6630
6631 2) iASL Compiler/Disassembler and Tools:
6632
6633 No changes for this release.
6634
6635 ----------------------------------------
6636 21 July 2006. Summary of changes for version 20060721:
6637
6638 1) ACPI CA Core Subsystem:
6639
6640 The full source code for the ASL test suite used to validate the iASL
6641 compiler and the ACPICA core subsystem is being released with the ACPICA
6642 source for the first time. The source is contained in a separate package
6643 and
6644 consists of over 1100 files that exercise all ASL/AML operators. The
6645 package
6646 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
6647 Fiodor
6648 Suietov)
6649
6650 Completed a new design and implementation for support of the ACPI Global
6651 Lock. On the OS side, the global lock is now treated as a standard AML
6652 mutex. Previously, multiple OS threads could "acquire" the global lock
6653 simultaneously. However, this could cause the BIOS to be starved out of
6654 the
6655 lock - especially in cases such as the Embedded Controller driver where
6656 there is a tight coupling between the OS and the BIOS.
6657
6658 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
6659 The Global Lock interrupt handler no longer queues the execution of a
6660 separate thread to signal the global lock semaphore. Instead, the
6661 semaphore
6662 is signaled directly from the interrupt handler.
6663
6664 Implemented support within the AML interpreter for package objects that
6665 contain a larger AML length (package list length) than the package
6666 element
6667 count. In this case, the length of the package is truncated to match the
6668 package element count. Some BIOS code apparently modifies the package
6669 length
6670 on the fly, and this change supports this behavior. Provides
6671 compatibility
6672 with the MS AML interpreter. (With assistance from Fiodor Suietov)
6673
6674 Implemented a temporary fix for the BankValue parameter of a Bank Field
6675 to
6676 support all constant values, now including the Zero and One opcodes.
6677 Evaluation of this parameter must eventually be converted to a full
6678 TermArg
6679 evaluation. A not-implemented error is now returned (temporarily) for
6680 non-
6681 constant values for this parameter.
6682
6683 Fixed problem reports (Fiodor Suietov) integrated:
6684 - Fix for premature object deletion after CopyObject on Operation Region
6685 (BZ
6686 350)
6687
6688 Example Code and Data Size: These are the sizes for the OS-independent
6689 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6690 debug version of the code includes the debug output trace mechanism and
6691 has
6692 a much larger code and data size.
6693
6694 Previous Release:
6695 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
6696 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
6697 Current Release:
6698 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
6699 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
6700
6701
6702 2) iASL Compiler/Disassembler and Tools:
6703
6704 No changes for this release.
6705
6706 ----------------------------------------
6707 07 July 2006. Summary of changes for version 20060707:
6708
6709 1) ACPI CA Core Subsystem:
6710
6711 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
6712 that do not allow the initialization of address pointers within packed
6713 structures - even though the hardware itself may support misaligned
6714 transfers. Some of the debug data structures are packed by default to
6715 minimize size.
6716
6717 Added an error message for the case where AcpiOsGetThreadId() returns
6718 zero.
6719 A non-zero value is required by the core ACPICA code to ensure the proper
6720 operation of AML mutexes and recursive control methods.
6721
6722 The DSDT is now the only ACPI table that determines whether the AML
6723 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
6724 but
6725 the hooks for per-table 32/64 switching have been removed from the code.
6726 A
6727 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
6728
6729 Fixed a possible leak of an OwnerID in the error path of
6730 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
6731 deletion to a single place in AcpiTbUninstallTable to correct possible
6732 leaks
6733 when using the AcpiTbDeleteTablesByType interface (with assistance from
6734 Lance Ortiz.)
6735
6736 Fixed a problem with Serialized control methods where the semaphore
6737 associated with the method could be over-signaled after multiple method
6738 invocations.
6739
6740 Fixed two issues with the locking of the internal namespace data
6741 structure.
6742 Both the Unload() operator and AcpiUnloadTable interface now lock the
6743 namespace during the namespace deletion associated with the table unload
6744 (with assistance from Linn Crosetto.)
6745
6746 Fixed problem reports (Valery Podrezov) integrated:
6747 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
6748
6749 Fixed problem reports (Fiodor Suietov) integrated:
6750 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
6751 - On Address Space handler deletion, needless deactivation call (BZ 374)
6752 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
6753 375)
6754 - Possible memory leak, Notify sub-objects of Processor, Power,
6755 ThermalZone
6756 (BZ 376)
6757 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
6758 - Minimum Length of RSDT should be validated (BZ 379)
6759 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
6760 Handler (BZ (380)
6761 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
6762 loaded
6763 (BZ 381)
6764
6765 Example Code and Data Size: These are the sizes for the OS-independent
6766 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6767 debug version of the code includes the debug output trace mechanism and
6768 has
6769 a much larger code and data size.
6770
6771 Previous Release:
6772 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
6773 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
6774 Current Release:
6775 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
6776 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
6777
6778
6779 2) iASL Compiler/Disassembler and Tools:
6780
6781 Fixed problem reports:
6782 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
6783 436)
6784
6785 ----------------------------------------
6786 23 June 2006. Summary of changes for version 20060623:
6787
6788 1) ACPI CA Core Subsystem:
6789
6790 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
6791 allows the type to be customized to the host OS for improved efficiency
6792 (since a spinlock is usually a very small object.)
6793
6794 Implemented support for "ignored" bits in the ACPI registers. According
6795 to
6796 the ACPI specification, these bits should be preserved when writing the
6797 registers via a read/modify/write cycle. There are 3 bits preserved in
6798 this
6799 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
6800
6801 Implemented the initial deployment of new OSL mutex interfaces. Since
6802 some
6803 host operating systems have separate mutex and semaphore objects, this
6804 feature was requested. The base code now uses mutexes (and the new mutex
6805 interfaces) wherever a binary semaphore was used previously. However, for
6806 the current release, the mutex interfaces are defined as macros to map
6807 them
6808 to the existing semaphore interfaces. Therefore, no OSL changes are
6809 required
6810 at this time. (See acpiosxf.h)
6811
6812 Fixed several problems with the support for the control method SyncLevel
6813 parameter. The SyncLevel now works according to the ACPI specification
6814 and
6815 in concert with the Mutex SyncLevel parameter, since the current
6816 SyncLevel
6817 is a property of the executing thread. Mutual exclusion for control
6818 methods
6819 is now implemented with a mutex instead of a semaphore.
6820
6821 Fixed three instances of the use of the C shift operator in the bitfield
6822 support code (exfldio.c) to avoid the use of a shift value larger than
6823 the
6824 target data width. The behavior of C compilers is undefined in this case
6825 and
6826 can cause unpredictable results, and therefore the case must be detected
6827 and
6828 avoided. (Fiodor Suietov)
6829
6830 Added an info message whenever an SSDT or OEM table is loaded dynamically
6831 via the Load() or LoadTable() ASL operators. This should improve
6832 debugging
6833 capability since it will show exactly what tables have been loaded
6834 (beyond
6835 the tables present in the RSDT/XSDT.)
6836
6837 Example Code and Data Size: These are the sizes for the OS-independent
6838 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6839 debug version of the code includes the debug output trace mechanism and
6840 has
6841 a much larger code and data size.
6842
6843 Previous Release:
6844 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
6845 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
6846 Current Release:
6847 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
6848 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
6849
6850
6851 2) iASL Compiler/Disassembler and Tools:
6852
6853 No changes for this release.
6854
6855 ----------------------------------------
6856 08 June 2006. Summary of changes for version 20060608:
6857
6858 1) ACPI CA Core Subsystem:
6859
6860 Converted the locking mutex used for the ACPI hardware to a spinlock.
6861 This
6862 change should eliminate all problems caused by attempting to acquire a
6863 semaphore at interrupt level, and it means that all ACPICA external
6864 interfaces that directly access the ACPI hardware can be safely called
6865 from
6866 interrupt level. OSL code that implements the semaphore interfaces should
6867 be
6868 able to eliminate any workarounds for being called at interrupt level.
6869
6870 Fixed a regression introduced in 20060526 where the ACPI device
6871 initialization could be prematurely aborted with an AE_NOT_FOUND if a
6872 device
6873 did not have an optional _INI method.
6874
6875 Fixed an IndexField issue where a write to the Data Register should be
6876 limited in size to the AccessSize (width) of the IndexField itself. (BZ
6877 433,
6878 Fiodor Suietov)
6879
6880 Fixed problem reports (Valery Podrezov) integrated:
6881 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
6882
6883 Fixed problem reports (Fiodor Suietov) integrated:
6884 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
6885
6886 Removed four global mutexes that were obsolete and were no longer being
6887 used.
6888
6889 Example Code and Data Size: These are the sizes for the OS-independent
6890 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6891 debug version of the code includes the debug output trace mechanism and
6892 has
6893 a much larger code and data size.
6894
6895 Previous Release:
6896 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
6897 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
6898 Current Release:
6899 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
6900 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
6901
6902
6903 2) iASL Compiler/Disassembler and Tools:
6904
6905 Fixed a fault when using -g option (get tables from registry) on Windows
6906 machines.
6907
6908 Fixed problem reports integrated:
6909 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
6910 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
6911 Suietov)
6912 - Global table revision override (-r) is ignored (BZ 413)
6913
6914 ----------------------------------------
6915 26 May 2006. Summary of changes for version 20060526:
6916
6917 1) ACPI CA Core Subsystem:
6918
6919 Restructured, flattened, and simplified the internal interfaces for
6920 namespace object evaluation - resulting in smaller code, less CPU stack
6921 use,
6922 and fewer interfaces. (With assistance from Mikhail Kouzmich)
6923
6924 Fixed a problem with the CopyObject operator where the first parameter
6925 was
6926 not typed correctly for the parser, interpreter, compiler, and
6927 disassembler.
6928 Caused various errors and unexpected behavior.
6929
6930 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
6931 produced incorrect results with some C compilers. Since the behavior of C
6932 compilers when the shift value is larger than the datatype width is
6933 apparently not well defined, the interpreter now detects this condition
6934 and
6935 simply returns zero as expected in all such cases. (BZ 395)
6936
6937 Fixed problem reports (Valery Podrezov) integrated:
6938 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
6939 - Allow interpreter to handle nested method declarations (BZ 5361)
6940
6941 Fixed problem reports (Fiodor Suietov) integrated:
6942 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
6943 355)
6944 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
6945 356)
6946 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
6947 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
6948 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
6949 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
6950 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
6951 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
6952 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
6953 365)
6954 - Status of the Global Initialization Handler call not used (BZ 366)
6955 - Incorrect object parameter to Global Initialization Handler (BZ 367)
6956
6957 Example Code and Data Size: These are the sizes for the OS-independent
6958 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6959 debug version of the code includes the debug output trace mechanism and
6960 has
6961 a much larger code and data size.
6962
6963 Previous Release:
6964 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
6965 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
6966 Current Release:
6967 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
6968 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
6969
6970
6971 2) iASL Compiler/Disassembler and Tools:
6972
6973 Modified the parser to allow the names IO, DMA, and IRQ to be used as
6974 namespace identifiers with no collision with existing resource descriptor
6975 macro names. This provides compatibility with other ASL compilers and is
6976 most useful for disassembly/recompilation of existing tables without
6977 parse
6978 errors. (With assistance from Thomas Renninger)
6979
6980 Disassembler: fixed an incorrect disassembly problem with the
6981 DataTableRegion and CopyObject operators. Fixed a possible fault during
6982 disassembly of some Alias operators.
6983
6984 ----------------------------------------
6985 12 May 2006. Summary of changes for version 20060512:
6986
6987 1) ACPI CA Core Subsystem:
6988
6989 Replaced the AcpiOsQueueForExecution interface with a new interface named
6990 AcpiOsExecute. The major difference is that the new interface does not
6991 have
6992 a Priority parameter, this appeared to be useless and has been replaced
6993 by
6994 a
6995 Type parameter. The Type tells the host what type of execution is being
6996 requested, such as global lock handler, notify handler, GPE handler, etc.
6997 This allows the host to queue and execute the request as appropriate for
6998 the
6999 request type, possibly using different work queues and different
7000 priorities
7001 for the various request types. This enables fixes for multithreading
7002 deadlock problems such as BZ #5534, and will require changes to all
7003 existing
7004 OS interface layers. (Alexey Starikovskiy and Bob Moore)
7005
7006 Fixed a possible memory leak associated with the support for the so-
7007 called
7008 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
7009 Suietov)
7010
7011 Fixed a problem with the Load() operator where a table load from an
7012 operation region could overwrite an internal table buffer by up to 7
7013 bytes
7014 and cause alignment faults on IPF systems. (With assistance from Luming
7015 Yu)
7016
7017 Example Code and Data Size: These are the sizes for the OS-independent
7018 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7019 debug version of the code includes the debug output trace mechanism and
7020 has
7021 a much larger code and data size.
7022
7023 Previous Release:
7024 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
7025 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
7026 Current Release:
7027 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
7028 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
7029
7030
7031
7032 2) iASL Compiler/Disassembler and Tools:
7033
7034 Disassembler: Implemented support to cross reference the internal
7035 namespace
7036 and automatically generate ASL External() statements for symbols not
7037 defined
7038 within the current table being disassembled. This will simplify the
7039 disassembly and recompilation of interdependent tables such as SSDTs
7040 since
7041 these statements will no longer have to be added manually.
7042
7043 Disassembler: Implemented experimental support to automatically detect
7044 invocations of external control methods and generate appropriate
7045 External()
7046 statements. This is problematic because the AML cannot be correctly
7047 parsed
7048 until the number of arguments for each control method is known.
7049 Currently,
7050 standalone method invocations and invocations as the source operand of a
7051 Store() statement are supported.
7052
7053 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
7054 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
7055 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
7056 more readable and likely closer to the original ASL source.
7057
7058 ----------------------------------------
7059 21 April 2006. Summary of changes for version 20060421:
7060
7061 1) ACPI CA Core Subsystem:
7062
7063 Removed a device initialization optimization introduced in 20051216 where
7064 the _STA method was not run unless an _INI was also present for the same
7065 device. This optimization could cause problems because it could allow
7066 _INI
7067 methods to be run within a not-present device subtree. (If a not-present
7068 device had no _INI, _STA would not be run, the not-present status would
7069 not
7070 be discovered, and the children of the device would be incorrectly
7071 traversed.)
7072
7073 Implemented a new _STA optimization where namespace subtrees that do not
7074 contain _INI are identified and ignored during device initialization.
7075 Selectively running _STA can significantly improve boot time on large
7076 machines (with assistance from Len Brown.)
7077
7078 Implemented support for the device initialization case where the returned
7079 _STA flags indicate a device not-present but functioning. In this case,
7080 _INI
7081 is not run, but the device children are examined for presence, as per the
7082 ACPI specification.
7083
7084 Implemented an additional change to the IndexField support in order to
7085 conform to MS behavior. The value written to the Index Register is not
7086 simply a byte offset, it is a byte offset in units of the access width of
7087 the parent Index Field. (Fiodor Suietov)
7088
7089 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
7090 interface is called during the creation of all AML operation regions, and
7091 allows the host OS to exert control over what addresses it will allow the
7092 AML code to access. Operation Regions whose addresses are disallowed will
7093 cause a runtime exception when they are actually accessed (will not
7094 affect
7095 or abort table loading.) See oswinxf or osunixxf for an example
7096 implementation.
7097
7098 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
7099 interface allows the host OS to match the various "optional"
7100 interface/behavior strings for the _OSI predefined control method as
7101 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
7102 for an example implementation.
7103
7104 Restructured and corrected various problems in the exception handling
7105 code
7106 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
7107 (with assistance from Takayoshi Kochi.)
7108
7109 Modified the Linux source converter to ignore quoted string literals
7110 while
7111 converting identifiers from mixed to lower case. This will correct
7112 problems
7113 with the disassembler and other areas where such strings must not be
7114 modified.
7115
7116 The ACPI_FUNCTION_* macros no longer require quotes around the function
7117 name. This allows the Linux source converter to convert the names, now
7118 that
7119 the converter ignores quoted strings.
7120
7121 Example Code and Data Size: These are the sizes for the OS-independent
7122 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7123 debug version of the code includes the debug output trace mechanism and
7124 has
7125 a much larger code and data size.
7126
7127 Previous Release:
7128
7129 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
7130 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
7131 Current Release:
7132 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
7133 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
7134
7135
7136 2) iASL Compiler/Disassembler and Tools:
7137
7138 Implemented 3 new warnings for iASL, and implemented multiple warning
7139 levels
7140 (w2 flag).
7141
7142 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
7143 not
7144 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
7145 check for the possible timeout, a warning is issued.
7146
7147 2) Useless operators: If an ASL operator does not specify an optional
7148 target
7149 operand and it also does not use the function return value from the
7150 operator, a warning is issued since the operator effectively does
7151 nothing.
7152
7153 3) Unreferenced objects: If a namespace object is created, but never
7154 referenced, a warning is issued. This is a warning level 2 since there
7155 are
7156 cases where this is ok, such as when a secondary table is loaded that
7157 uses
7158 the unreferenced objects. Even so, care is taken to only flag objects
7159 that
7160 don't look like they will ever be used. For example, the reserved methods
7161 (starting with an underscore) are usually not referenced because it is
7162 expected that the OS will invoke them.
7163
7164 ----------------------------------------
7165 31 March 2006. Summary of changes for version 20060331:
7166
7167 1) ACPI CA Core Subsystem:
7168
7169 Implemented header file support for the following additional ACPI tables:
7170 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
7171 support,
7172 all current and known ACPI tables are now defined in the ACPICA headers
7173 and
7174 are available for use by device drivers and other software.
7175
7176 Implemented support to allow tables that contain ACPI names with invalid
7177 characters to be loaded. Previously, this would cause the table load to
7178 fail, but since there are several known cases of such tables on existing
7179 machines, this change was made to enable ACPI support for them. Also,
7180 this
7181 matches the behavior of the Microsoft ACPI implementation.
7182
7183 Fixed a couple regressions introduced during the memory optimization in
7184 the
7185 20060317 release. The namespace node definition required additional
7186 reorganization and an internal datatype that had been changed to 8-bit
7187 was
7188 restored to 32-bit. (Valery Podrezov)
7189
7190 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
7191 could be passed through to AcpiOsReleaseObject which is unexpected. Such
7192 null pointers are now trapped and ignored, matching the behavior of the
7193 previous implementation before the deployment of AcpiOsReleaseObject.
7194 (Valery Podrezov, Fiodor Suietov)
7195
7196 Fixed a memory mapping leak during the deletion of a SystemMemory
7197 operation
7198 region where a cached memory mapping was not deleted. This became a
7199 noticeable problem for operation regions that are defined within
7200 frequently
7201 used control methods. (Dana Meyers)
7202
7203 Reorganized the ACPI table header files into two main files: one for the
7204 ACPI tables consumed by the ACPICA core, and another for the
7205 miscellaneous
7206 ACPI tables that are consumed by the drivers and other software. The
7207 various
7208 FADT definitions were merged into one common section and three different
7209 tables (ACPI 1.0, 1.0+, and 2.0)
7210
7211 Example Code and Data Size: These are the sizes for the OS-independent
7212 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7213 debug version of the code includes the debug output trace mechanism and
7214 has
7215 a much larger code and data size.
7216
7217 Previous Release:
7218 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
7219 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
7220 Current Release:
7221 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
7222 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
7223
7224
7225 2) iASL Compiler/Disassembler and Tools:
7226
7227 Disassembler: Implemented support to decode and format all non-AML ACPI
7228 tables (tables other than DSDTs and SSDTs.) This includes the new tables
7229 added to the ACPICA headers, therefore all current and known ACPI tables
7230 are
7231 supported.
7232
7233 Disassembler: The change to allow ACPI names with invalid characters also
7234 enables the disassembly of such tables. Invalid characters within names
7235 are
7236 changed to '*' to make the name printable; the iASL compiler will still
7237 generate an error for such names, however, since this is an invalid ACPI
7238 character.
7239
7240 Implemented an option for AcpiXtract (-a) to extract all tables found in
7241 the
7242 input file. The default invocation extracts only the DSDTs and SSDTs.
7243
7244 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
7245 makefile for the AcpiXtract utility.
7246
7247 ----------------------------------------
7248 17 March 2006. Summary of changes for version 20060317:
7249
7250 1) ACPI CA Core Subsystem:
7251
7252 Implemented the use of a cache object for all internal namespace nodes.
7253 Since there are about 1000 static nodes in a typical system, this will
7254 decrease memory use for cache implementations that minimize per-
7255 allocation
7256 overhead (such as a slab allocator.)
7257
7258 Removed the reference count mechanism for internal namespace nodes, since
7259 it
7260 was deemed unnecessary. This reduces the size of each namespace node by
7261 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
7262 case,
7263 and 32 bytes for the 64-bit case.
7264
7265 Optimized several internal data structures to reduce object size on 64-
7266 bit
7267 platforms by packing data within the 64-bit alignment. This includes the
7268 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
7269 instances corresponding to the namespace objects.
7270
7271 Added two new strings for the predefined _OSI method: "Windows 2001.1
7272 SP1"
7273 and "Windows 2006".
7274
7275 Split the allocation tracking mechanism out to a separate file, from
7276 utalloc.c to uttrack.c. This mechanism appears to be only useful for
7277 application-level code. Kernels may wish to not include uttrack.c in
7278 distributions.
7279
7280 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
7281 associated
7282 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
7283 macros.)
7284
7285 Code and Data Size: These are the sizes for the acpica.lib produced by
7286 the
7287 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
7288 ACPI
7289 driver or OSPM code. The debug version of the code includes the debug
7290 output
7291 trace mechanism and has a much larger code and data size. Note that these
7292 values will vary depending on the efficiency of the compiler and the
7293 compiler options used during generation.
7294
7295 Previous Release:
7296 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7297 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
7298 Current Release:
7299 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
7300 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
7301
7302
7303 2) iASL Compiler/Disassembler and Tools:
7304
7305 Implemented an ANSI C version of the acpixtract utility. This version
7306 will
7307 automatically extract the DSDT and all SSDTs from the input acpidump text
7308 file and dump the binary output to separate files. It can also display a
7309 summary of the input file including the headers for each table found and
7310 will extract any single ACPI table, with any signature. (See
7311 source/tools/acpixtract)
7312
7313 ----------------------------------------
7314 10 March 2006. Summary of changes for version 20060310:
7315
7316 1) ACPI CA Core Subsystem:
7317
7318 Tagged all external interfaces to the subsystem with the new
7319 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
7320 assist
7321 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
7322 macro. The default definition is NULL.
7323
7324 Added the ACPI_THREAD_ID type for the return value from
7325 AcpiOsGetThreadId.
7326 This allows the host to define this as necessary to simplify kernel
7327 integration. The default definition is ACPI_NATIVE_UINT.
7328
7329 Fixed two interpreter problems related to error processing, the deletion
7330 of
7331 objects, and placing invalid pointers onto the internal operator result
7332 stack. BZ 6028, 6151 (Valery Podrezov)
7333
7334 Increased the reference count threshold where a warning is emitted for
7335 large
7336 reference counts in order to eliminate unnecessary warnings on systems
7337 with
7338 large namespaces (especially 64-bit.) Increased the value from 0x400 to
7339 0x800.
7340
7341 Due to universal disagreement as to the meaning of the 'c' in the
7342 calloc()
7343 function, the ACPI_MEM_CALLOCATE macro has been renamed to
7344 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
7345 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
7346 ACPI_FREE.
7347
7348 Code and Data Size: These are the sizes for the acpica.lib produced by
7349 the
7350 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
7351 ACPI
7352 driver or OSPM code. The debug version of the code includes the debug
7353 output
7354 trace mechanism and has a much larger code and data size. Note that these
7355 values will vary depending on the efficiency of the compiler and the
7356 compiler options used during generation.
7357
7358 Previous Release:
7359 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
7360 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
7361 Current Release:
7362 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7363 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
7364
7365
7366 2) iASL Compiler/Disassembler:
7367
7368 Disassembler: implemented support for symbolic resource descriptor
7369 references. If a CreateXxxxField operator references a fixed offset
7370 within
7371 a
7372 resource descriptor, a name is assigned to the descriptor and the offset
7373 is
7374 translated to the appropriate resource tag and pathname. The addition of
7375 this support brings the disassembled code very close to the original ASL
7376 source code and helps eliminate run-time errors when the disassembled
7377 code
7378 is modified (and recompiled) in such a way as to invalidate the original
7379 fixed offsets.
7380
7381 Implemented support for a Descriptor Name as the last parameter to the
7382 ASL
7383 Register() macro. This parameter was inadvertently left out of the ACPI
7384 specification, and will be added for ACPI 3.0b.
7385
7386 Fixed a problem where the use of the "_OSI" string (versus the full path
7387 "\_OSI") caused an internal compiler error. ("No back ptr to op")
7388
7389 Fixed a problem with the error message that occurs when an invalid string
7390 is
7391 used for a _HID object (such as one with an embedded asterisk:
7392 "*PNP010A".)
7393 The correct message is now displayed.
7394
7395 ----------------------------------------
7396 17 February 2006. Summary of changes for version 20060217:
7397
7398 1) ACPI CA Core Subsystem:
7399
7400 Implemented a change to the IndexField support to match the behavior of
7401 the
7402 Microsoft AML interpreter. The value written to the Index register is now
7403 a
7404 byte offset, no longer an index based upon the width of the Data
7405 register.
7406 This should fix IndexField problems seen on some machines where the Data
7407 register is not exactly one byte wide. The ACPI specification will be
7408 clarified on this point.
7409
7410 Fixed a problem where several resource descriptor types could overrun the
7411 internal descriptor buffer due to size miscalculation: VendorShort,
7412 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
7413 affect all platforms.
7414
7415 Fixed a problem where individual resource descriptors were misaligned
7416 within
7417 the internal buffer, causing alignment faults on IA64 platforms.
7418
7419 Code and Data Size: These are the sizes for the acpica.lib produced by
7420 the
7421 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
7422 ACPI
7423 driver or OSPM code. The debug version of the code includes the debug
7424 output
7425 trace mechanism and has a much larger code and data size. Note that these
7426 values will vary depending on the efficiency of the compiler and the
7427 compiler options used during generation.
7428
7429 Previous Release:
7430 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7431 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
7432 Current Release:
7433 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
7434 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
7435
7436
7437 2) iASL Compiler/Disassembler:
7438
7439 Implemented support for new reserved names: _WDG and _WED are Microsoft
7440 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
7441 defined method (Throttling Depth Limit.)
7442
7443 Fixed a problem where a zero-length VendorShort or VendorLong resource
7444 descriptor was incorrectly emitted as a descriptor of length one.
7445
7446 ----------------------------------------
7447 10 February 2006. Summary of changes for version 20060210:
7448
7449 1) ACPI CA Core Subsystem:
7450
7451 Removed a couple of extraneous ACPI_ERROR messages that appeared during
7452 normal execution. These became apparent after the conversion from
7453 ACPI_DEBUG_PRINT.
7454
7455 Fixed a problem where the CreateField operator could hang if the BitIndex
7456 or
7457 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
7458
7459 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
7460 failed with an exception. This also fixes a couple of related RefOf and
7461 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
7462
7463 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
7464 of
7465 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
7466 BZ
7467 5480)
7468
7469 Implemented a memory cleanup at the end of the execution of each
7470 iteration
7471 of an AML While() loop, preventing the accumulation of outstanding
7472 objects.
7473 (Valery Podrezov, BZ 5427)
7474
7475 Eliminated a chunk of duplicate code in the object resolution code.
7476 (Valery
7477 Podrezov, BZ 5336)
7478
7479 Fixed several warnings during the 64-bit code generation.
7480
7481 The AcpiSrc source code conversion tool now inserts one line of
7482 whitespace
7483 after an if() statement that is followed immediately by a comment,
7484 improving
7485 readability of the Linux code.
7486
7487 Code and Data Size: The current and previous library sizes for the core
7488 subsystem are shown below. These are the code and data sizes for the
7489 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7490 These
7491 values do not include any ACPI driver or OSPM code. The debug version of
7492 the
7493 code includes the debug output trace mechanism and has a much larger code
7494 and data size. Note that these values will vary depending on the
7495 efficiency
7496 of the compiler and the compiler options used during generation.
7497
7498 Previous Release:
7499 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
7500 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
7501 Current Release:
7502 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7503 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
7504
7505
7506 2) iASL Compiler/Disassembler:
7507
7508 Fixed a problem with the disassembly of a BankField operator with a
7509 complex
7510 expression for the BankValue parameter.
7511
7512 ----------------------------------------
7513 27 January 2006. Summary of changes for version 20060127:
7514
7515 1) ACPI CA Core Subsystem:
7516
7517 Implemented support in the Resource Manager to allow unresolved
7518 namestring
7519 references within resource package objects for the _PRT method. This
7520 support
7521 is in addition to the previously implemented unresolved reference support
7522 within the AML parser. If the interpreter slack mode is enabled, these
7523 unresolved references will be passed through to the caller as a NULL
7524 package
7525 entry.
7526
7527 Implemented and deployed new macros and functions for error and warning
7528 messages across the subsystem. These macros are simpler and generate less
7529 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
7530 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
7531 macros remain defined to allow ACPI drivers time to migrate to the new
7532 macros.
7533
7534 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
7535 the
7536 Acquire/Release Lock OSL interfaces.
7537
7538 Fixed a problem where Alias ASL operators are sometimes not correctly
7539 resolved, in both the interpreter and the iASL compiler.
7540
7541 Fixed several problems with the implementation of the
7542 ConcatenateResTemplate
7543 ASL operator. As per the ACPI specification, zero length buffers are now
7544 treated as a single EndTag. One-length buffers always cause a fatal
7545 exception. Non-zero length buffers that do not end with a full 2-byte
7546 EndTag
7547 cause a fatal exception.
7548
7549 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
7550 interface. (With assistance from Thomas Renninger)
7551
7552 Code and Data Size: The current and previous library sizes for the core
7553 subsystem are shown below. These are the code and data sizes for the
7554 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7555 These
7556 values do not include any ACPI driver or OSPM code. The debug version of
7557 the
7558 code includes the debug output trace mechanism and has a much larger code
7559 and data size. Note that these values will vary depending on the
7560 efficiency
7561 of the compiler and the compiler options used during generation.
7562
7563 Previous Release:
7564 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
7565 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
7566 Current Release:
7567 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
7568 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
7569
7570
7571 2) iASL Compiler/Disassembler:
7572
7573 Fixed an internal error that was generated for any forward references to
7574 ASL
7575 Alias objects.
7576
7577 ----------------------------------------
7578 13 January 2006. Summary of changes for version 20060113:
7579
7580 1) ACPI CA Core Subsystem:
7581
7582 Added 2006 copyright to all module headers and signons. This affects
7583 virtually every file in the ACPICA core subsystem, iASL compiler, and the
7584 utilities.
7585
7586 Enhanced the ACPICA error reporting in order to simplify user migration
7587 to
7588 the non-debug version of ACPICA. Replaced all instances of the
7589 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
7590 debug
7591 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
7592 respectively. This preserves all error and warning messages in the non-
7593 debug
7594 version of the ACPICA code (this has been referred to as the "debug lite"
7595 option.) Over 200 cases were converted to create a total of over 380
7596 error/warning messages across the ACPICA code. This increases the code
7597 and
7598 data size of the default non-debug version of the code somewhat (about
7599 13K),
7600 but all error/warning reporting may be disabled if desired (and code
7601 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
7602 configuration option. The size of the debug version of ACPICA remains
7603 about
7604 the same.
7605
7606 Fixed a memory leak within the AML Debugger "Set" command. One object was
7607 not properly deleted for every successful invocation of the command.
7608
7609 Code and Data Size: The current and previous library sizes for the core
7610 subsystem are shown below. These are the code and data sizes for the
7611 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7612 These
7613 values do not include any ACPI driver or OSPM code. The debug version of
7614 the
7615 code includes the debug output trace mechanism and has a much larger code
7616 and data size. Note that these values will vary depending on the
7617 efficiency
7618 of the compiler and the compiler options used during generation.
7619
7620 Previous Release:
7621 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
7622 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
7623 Current Release:
7624 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
7625 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
7626
7627
7628 2) iASL Compiler/Disassembler:
7629
7630 The compiler now officially supports the ACPI 3.0a specification that was
7631 released on December 30, 2005. (Specification is available at
7632 www.acpi.info)
7633
7634 ----------------------------------------
7635 16 December 2005. Summary of changes for version 20051216:
7636
7637 1) ACPI CA Core Subsystem:
7638
7639 Implemented optional support to allow unresolved names within ASL Package
7640 objects. A null object is inserted in the package when a named reference
7641 cannot be located in the current namespace. Enabled via the interpreter
7642 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
7643 machines
7644 that contain such code.
7645
7646 Implemented an optimization to the initialization sequence that can
7647 improve
7648 boot time. During ACPI device initialization, the _STA method is now run
7649 if
7650 and only if the _INI method exists. The _STA method is used to determine
7651 if
7652 the device is present; An _INI can only be run if _STA returns present,
7653 but
7654 it is a waste of time to run the _STA method if the _INI does not exist.
7655 (Prototype and assistance from Dong Wei)
7656
7657 Implemented use of the C99 uintptr_t for the pointer casting macros if it
7658 is
7659 available in the current compiler. Otherwise, the default (void *) cast
7660 is
7661 used as before.
7662
7663 Fixed some possible memory leaks found within the execution path of the
7664 Break, Continue, If, and CreateField operators. (Valery Podrezov)
7665
7666 Fixed a problem introduced in the 20051202 release where an exception is
7667 generated during method execution if a control method attempts to declare
7668 another method.
7669
7670 Moved resource descriptor string constants that are used by both the AML
7671 disassembler and AML debugger to the common utilities directory so that
7672 these components are independent.
7673
7674 Implemented support in the AcpiExec utility (-e switch) to globally
7675 ignore
7676 exceptions during control method execution (method is not aborted.)
7677
7678 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
7679 generation.
7680
7681 Code and Data Size: The current and previous library sizes for the core
7682 subsystem are shown below. These are the code and data sizes for the
7683 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7684 These
7685 values do not include any ACPI driver or OSPM code. The debug version of
7686 the
7687 code includes the debug output trace mechanism and has a much larger code
7688 and data size. Note that these values will vary depending on the
7689 efficiency
7690 of the compiler and the compiler options used during generation.
7691
7692 Previous Release:
7693 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
7694 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
7695 Current Release:
7696 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
7697 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
7698
7699
7700 2) iASL Compiler/Disassembler:
7701
7702 Fixed a problem where a CPU stack overflow fault could occur if a
7703 recursive
7704 method call was made from within a Return statement.
7705
7706 ----------------------------------------
7707 02 December 2005. Summary of changes for version 20051202:
7708
7709 1) ACPI CA Core Subsystem:
7710
7711 Modified the parsing of control methods to no longer create namespace
7712 objects during the first pass of the parse. Objects are now created only
7713 during the execute phase, at the moment the namespace creation operator
7714 is
7715 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
7716 This
7717 should eliminate ALREADY_EXISTS exceptions seen on some machines where
7718 reentrant control methods are protected by an AML mutex. The mutex will
7719 now
7720 correctly block multiple threads from attempting to create the same
7721 object
7722 more than once.
7723
7724 Increased the number of available Owner Ids for namespace object tracking
7725 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
7726 on
7727 some machines with a large number of ACPI tables (either static or
7728 dynamic).
7729
7730 Fixed a problem with the AcpiExec utility where a fault could occur when
7731 the
7732 -b switch (batch mode) is used.
7733
7734 Enhanced the namespace dump routine to output the owner ID for each
7735 namespace object.
7736
7737 Code and Data Size: The current and previous library sizes for the core
7738 subsystem are shown below. These are the code and data sizes for the
7739 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7740 These
7741 values do not include any ACPI driver or OSPM code. The debug version of
7742 the
7743 code includes the debug output trace mechanism and has a much larger code
7744 and data size. Note that these values will vary depending on the
7745 efficiency
7746 of the compiler and the compiler options used during generation.
7747
7748 Previous Release:
7749 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
7750 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
7751 Current Release:
7752 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
7753 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
7754
7755
7756 2) iASL Compiler/Disassembler:
7757
7758 Fixed a parse error during compilation of certain Switch/Case constructs.
7759 To
7760 simplify the parse, the grammar now allows for multiple Default
7761 statements
7762 and this error is now detected and flagged during the analysis phase.
7763
7764 Disassembler: The disassembly now includes the contents of the original
7765 table header within a comment at the start of the file. This includes the
7766 name and version of the original ASL compiler.
7767
7768 ----------------------------------------
7769 17 November 2005. Summary of changes for version 20051117:
7770
7771 1) ACPI CA Core Subsystem:
7772
7773 Fixed a problem in the AML parser where the method thread count could be
7774 decremented below zero if any errors occurred during the method parse
7775 phase.
7776 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
7777 machines.
7778 This also fixed a related regression with the mechanism that detects and
7779 corrects methods that cannot properly handle reentrancy (related to the
7780 deployment of the new OwnerId mechanism.)
7781
7782 Eliminated the pre-parsing of control methods (to detect errors) during
7783 table load. Related to the problem above, this was causing unwind issues
7784 if
7785 any errors occurred during the parse, and it seemed to be overkill. A
7786 table
7787 load should not be aborted if there are problems with any single control
7788 method, thus rendering this feature rather pointless.
7789
7790 Fixed a problem with the new table-driven resource manager where an
7791 internal
7792 buffer overflow could occur for small resource templates.
7793
7794 Implemented a new external interface, AcpiGetVendorResource. This
7795 interface
7796 will find and return a vendor-defined resource descriptor within a _CRS
7797 or
7798 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
7799 Helgaas.
7800
7801 Removed the length limit (200) on string objects as per the upcoming ACPI
7802 3.0A specification. This affects the following areas of the interpreter:
7803 1)
7804 any implicit conversion of a Buffer to a String, 2) a String object
7805 result
7806 of the ASL Concatentate operator, 3) the String object result of the ASL
7807 ToString operator.
7808
7809 Fixed a problem in the Windows OS interface layer (OSL) where a
7810 WAIT_FOREVER
7811 on a semaphore object would incorrectly timeout. This allows the
7812 multithreading features of the AcpiExec utility to work properly under
7813 Windows.
7814
7815 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
7816 the recently added file named "utresrc.c".
7817
7818 Code and Data Size: The current and previous library sizes for the core
7819 subsystem are shown below. These are the code and data sizes for the
7820 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7821 These
7822 values do not include any ACPI driver or OSPM code. The debug version of
7823 the
7824 code includes the debug output trace mechanism and has a much larger code
7825 and data size. Note that these values will vary depending on the
7826 efficiency
7827 of the compiler and the compiler options used during generation.
7828
7829 Previous Release:
7830 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
7831 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
7832 Current Release:
7833 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
7834 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
7835
7836
7837 2) iASL Compiler/Disassembler:
7838
7839 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
7840 specification. For the iASL compiler, this means that string literals
7841 within
7842 the source ASL can be of any length.
7843
7844 Enhanced the listing output to dump the AML code for resource descriptors
7845 immediately after the ASL code for each descriptor, instead of in a block
7846 at
7847 the end of the entire resource template.
7848
7849 Enhanced the compiler debug output to dump the entire original parse tree
7850 constructed during the parse phase, before any transforms are applied to
7851 the
7852 tree. The transformed tree is dumped also.
7853
7854 ----------------------------------------
7855 02 November 2005. Summary of changes for version 20051102:
7856
7857 1) ACPI CA Core Subsystem:
7858
7859 Modified the subsystem initialization sequence to improve GPE support.
7860 The
7861 GPE initialization has been split into two parts in order to defer
7862 execution
7863 of the _PRW methods (Power Resources for Wake) until after the hardware
7864 is
7865 fully initialized and the SCI handler is installed. This allows the _PRW
7866 methods to access fields protected by the Global Lock. This will fix
7867 systems
7868 where a NO_GLOBAL_LOCK exception has been seen during initialization.
7869
7870 Converted the ACPI internal object disassemble and display code within
7871 the
7872 AML debugger to fully table-driven operation, reducing code size and
7873 increasing maintainability.
7874
7875 Fixed a regression with the ConcatenateResTemplate() ASL operator
7876 introduced
7877 in the 20051021 release.
7878
7879 Implemented support for "local" internal ACPI object types within the
7880 debugger "Object" command and the AcpiWalkNamespace external interfaces.
7881 These local types include RegionFields, BankFields, IndexFields, Alias,
7882 and
7883 reference objects.
7884
7885 Moved common AML resource handling code into a new file, "utresrc.c".
7886 This
7887 code is shared by both the Resource Manager and the AML Debugger.
7888
7889 Code and Data Size: The current and previous library sizes for the core
7890 subsystem are shown below. These are the code and data sizes for the
7891 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7892 These
7893 values do not include any ACPI driver or OSPM code. The debug version of
7894 the
7895 code includes the debug output trace mechanism and has a much larger code
7896 and data size. Note that these values will vary depending on the
7897 efficiency
7898 of the compiler and the compiler options used during generation.
7899
7900 Previous Release:
7901 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
7902 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
7903 Current Release:
7904 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
7905 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
7906
7907
7908 2) iASL Compiler/Disassembler:
7909
7910 Fixed a problem with very large initializer lists (more than 4000
7911 elements)
7912 for both Buffer and Package objects where the parse stack could overflow.
7913
7914 Enhanced the pre-compile source code scan for non-ASCII characters to
7915 ignore
7916 characters within comment fields. The scan is now always performed and is
7917 no
7918 longer optional, detecting invalid characters within a source file
7919 immediately rather than during the parse phase or later.
7920
7921 Enhanced the ASL grammar definition to force early reductions on all
7922 list-
7923 style grammar elements so that the overall parse stack usage is greatly
7924 reduced. This should improve performance and reduce the possibility of
7925 parse
7926 stack overflow.
7927
7928 Eliminated all reduce/reduce conflicts in the iASL parser generation.
7929 Also,
7930 with the addition of a %expected statement, the compiler generates from
7931 source with no warnings.
7932
7933 Fixed a possible segment fault in the disassembler if the input filename
7934 does not contain a "dot" extension (Thomas Renninger).
7935
7936 ----------------------------------------
7937 21 October 2005. Summary of changes for version 20051021:
7938
7939 1) ACPI CA Core Subsystem:
7940
7941 Implemented support for the EM64T and other x86-64 processors. This
7942 essentially entails recognizing that these processors support non-aligned
7943 memory transfers. Previously, all 64-bit processors were assumed to lack
7944 hardware support for non-aligned transfers.
7945
7946 Completed conversion of the Resource Manager to nearly full table-driven
7947 operation. Specifically, the resource conversion code (convert AML to
7948 internal format and the reverse) and the debug code to dump internal
7949 resource descriptors are fully table-driven, reducing code and data size
7950 and
7951 improving maintainability.
7952
7953 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
7954 word
7955 on 64-bit processors instead of a fixed 32-bit word. (With assistance
7956 from
7957 Alexey Starikovskiy)
7958
7959 Implemented support within the resource conversion code for the Type-
7960 Specific byte within the various ACPI 3.0 *WordSpace macros.
7961
7962 Fixed some issues within the resource conversion code for the type-
7963 specific
7964 flags for both Memory and I/O address resource descriptors. For Memory,
7965 implemented support for the MTP and TTP flags. For I/O, split the TRS and
7966 TTP flags into two separate fields.
7967
7968 Code and Data Size: The current and previous library sizes for the core
7969 subsystem are shown below. These are the code and data sizes for the
7970 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7971 These
7972 values do not include any ACPI driver or OSPM code. The debug version of
7973 the
7974 code includes the debug output trace mechanism and has a much larger code
7975 and data size. Note that these values will vary depending on the
7976 efficiency
7977 of the compiler and the compiler options used during generation.
7978
7979 Previous Release:
7980 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
7981 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
7982 Current Release:
7983 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
7984 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
7985
7986
7987
7988 2) iASL Compiler/Disassembler:
7989
7990 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
7991 the
7992 corresponding ResourceSource string was not also present in a resource
7993 descriptor declaration. This restriction caused problems with existing
7994 AML/ASL code that includes the Index byte without the string. When such
7995 AML
7996 was disassembled, it could not be compiled without modification. Further,
7997 the modified code created a resource template with a different size than
7998 the
7999 original, breaking code that used fixed offsets into the resource
8000 template
8001 buffer.
8002
8003 Removed a recent feature of the disassembler to ignore a lone
8004 ResourceIndex
8005 byte. This byte is now emitted if present so that the exact AML can be
8006 reproduced when the disassembled code is recompiled.
8007
8008 Improved comments and text alignment for the resource descriptor code
8009 emitted by the disassembler.
8010
8011 Implemented disassembler support for the ACPI 3.0 AccessSize field within
8012 a
8013 Register() resource descriptor.
8014
8015 ----------------------------------------
8016 30 September 2005. Summary of changes for version 20050930:
8017
8018 1) ACPI CA Core Subsystem:
8019
8020 Completed a major overhaul of the Resource Manager code - specifically,
8021 optimizations in the area of the AML/internal resource conversion code.
8022 The
8023 code has been optimized to simplify and eliminate duplicated code, CPU
8024 stack
8025 use has been decreased by optimizing function parameters and local
8026 variables, and naming conventions across the manager have been
8027 standardized
8028 for clarity and ease of maintenance (this includes function, parameter,
8029 variable, and struct/typedef names.) The update may force changes in some
8030 driver code, depending on how resources are handled by the host OS.
8031
8032 All Resource Manager dispatch and information tables have been moved to a
8033 single location for clarity and ease of maintenance. One new file was
8034 created, named "rsinfo.c".
8035
8036 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
8037 guarantee that the argument is not evaluated twice, making them less
8038 prone
8039 to macro side-effects. However, since there exists the possibility of
8040 additional stack use if a particular compiler cannot optimize them (such
8041 as
8042 in the debug generation case), the original macros are optionally
8043 available.
8044 Note that some invocations of the return_VALUE macro may now cause size
8045 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
8046 to
8047 eliminate these. (From Randy Dunlap)
8048
8049 Implemented a new mechanism to enable debug tracing for individual
8050 control
8051 methods. A new external interface, AcpiDebugTrace, is provided to enable
8052 this mechanism. The intent is to allow the host OS to easily enable and
8053 disable tracing for problematic control methods. This interface can be
8054 easily exposed to a user or debugger interface if desired. See the file
8055 psxface.c for details.
8056
8057 AcpiUtCallocate will now return a valid pointer if a length of zero is
8058 specified - a length of one is used and a warning is issued. This matches
8059 the behavior of AcpiUtAllocate.
8060
8061 Code and Data Size: The current and previous library sizes for the core
8062 subsystem are shown below. These are the code and data sizes for the
8063 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8064 These
8065 values do not include any ACPI driver or OSPM code. The debug version of
8066 the
8067 code includes the debug output trace mechanism and has a much larger code
8068 and data size. Note that these values will vary depending on the
8069 efficiency
8070 of the compiler and the compiler options used during generation.
8071
8072 Previous Release:
8073 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
8074 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
8075 Current Release:
8076 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
8077 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
8078
8079
8080 2) iASL Compiler/Disassembler:
8081
8082 A remark is issued if the effective compile-time length of a package or
8083 buffer is zero. Previously, this was a warning.
8084
8085 ----------------------------------------
8086 16 September 2005. Summary of changes for version 20050916:
8087
8088 1) ACPI CA Core Subsystem:
8089
8090 Fixed a problem within the Resource Manager where support for the Generic
8091 Register descriptor was not fully implemented. This descriptor is now
8092 fully
8093 recognized, parsed, disassembled, and displayed.
8094
8095 Completely restructured the Resource Manager code to utilize table-driven
8096 dispatch and lookup, eliminating many of the large switch() statements.
8097 This
8098 reduces overall subsystem code size and code complexity. Affects the
8099 resource parsing and construction, disassembly, and debug dump output.
8100
8101 Cleaned up and restructured the debug dump output for all resource
8102 descriptors. Improved readability of the output and reduced code size.
8103
8104 Fixed a problem where changes to internal data structures caused the
8105 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
8106
8107 Code and Data Size: The current and previous library sizes for the core
8108 subsystem are shown below. These are the code and data sizes for the
8109 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8110 These
8111 values do not include any ACPI driver or OSPM code. The debug version of
8112 the
8113 code includes the debug output trace mechanism and has a much larger code
8114 and data size. Note that these values will vary depending on the
8115 efficiency
8116 of the compiler and the compiler options used during generation.
8117
8118 Previous Release:
8119 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
8120 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
8121 Current Release:
8122 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
8123 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
8124
8125
8126 2) iASL Compiler/Disassembler:
8127
8128 Updated the disassembler to automatically insert an EndDependentFn()
8129 macro
8130 into the ASL stream if this macro is missing in the original AML code,
8131 simplifying compilation of the resulting ASL module.
8132
8133 Fixed a problem in the disassembler where a disassembled ResourceSource
8134 string (within a large resource descriptor) was not surrounded by quotes
8135 and
8136 not followed by a comma, causing errors when the resulting ASL module was
8137 compiled. Also, escape sequences within a ResourceSource string are now
8138 handled correctly (especially "\\")
8139
8140 ----------------------------------------
8141 02 September 2005. Summary of changes for version 20050902:
8142
8143 1) ACPI CA Core Subsystem:
8144
8145 Fixed a problem with the internal Owner ID allocation and deallocation
8146 mechanisms for control method execution and recursive method invocation.
8147 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
8148 messages seen on some systems. Recursive method invocation depth is
8149 currently limited to 255. (Alexey Starikovskiy)
8150
8151 Completely eliminated all vestiges of support for the "module-level
8152 executable code" until this support is fully implemented and debugged.
8153 This
8154 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
8155 some systems that invoke this support.
8156
8157 Fixed a problem within the resource manager code where the transaction
8158 flags
8159 for a 64-bit address descriptor were handled incorrectly in the type-
8160 specific flag byte.
8161
8162 Consolidated duplicate code within the address descriptor resource
8163 manager
8164 code, reducing overall subsystem code size.
8165
8166 Fixed a fault when using the AML debugger "disassemble" command to
8167 disassemble individual control methods.
8168
8169 Removed references to the "release_current" directory within the Unix
8170 release package.
8171
8172 Code and Data Size: The current and previous core subsystem library sizes
8173 are shown below. These are the code and data sizes for the acpica.lib
8174 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
8175 include any ACPI driver or OSPM code. The debug version of the code
8176 includes
8177 the debug output trace mechanism and has a much larger code and data
8178 size.
8179 Note that these values will vary depending on the efficiency of the
8180 compiler
8181 and the compiler options used during generation.
8182
8183 Previous Release:
8184 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8185 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
8186 Current Release:
8187 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
8188 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
8189
8190
8191 2) iASL Compiler/Disassembler:
8192
8193 Implemented an error check for illegal duplicate values in the interrupt
8194 and
8195 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
8196 Interrupt().
8197
8198 Implemented error checking for the Irq() and IrqNoFlags() macros to
8199 detect
8200 too many values in the interrupt list (16 max) and invalid values in the
8201 list (range 0 - 15)
8202
8203 The maximum length string literal within an ASL file is now restricted to
8204 200 characters as per the ACPI specification.
8205
8206 Fixed a fault when using the -ln option (generate namespace listing).
8207
8208 Implemented an error check to determine if a DescriptorName within a
8209 resource descriptor has already been used within the current scope.
8210
8211 ----------------------------------------
8212 15 August 2005. Summary of changes for version 20050815:
8213
8214 1) ACPI CA Core Subsystem:
8215
8216 Implemented a full bytewise compare to determine if a table load request
8217 is
8218 attempting to load a duplicate table. The compare is performed if the
8219 table
8220 signatures and table lengths match. This will allow different tables with
8221 the same OEM Table ID and revision to be loaded - probably against the
8222 ACPI
8223 specification, but discovered in the field nonetheless.
8224
8225 Added the changes.txt logfile to each of the zipped release packages.
8226
8227 Code and Data Size: Current and previous core subsystem library sizes are
8228 shown below. These are the code and data sizes for the acpica.lib
8229 produced
8230 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8231 any ACPI driver or OSPM code. The debug version of the code includes the
8232 debug output trace mechanism and has a much larger code and data size.
8233 Note
8234 that these values will vary depending on the efficiency of the compiler
8235 and
8236 the compiler options used during generation.
8237
8238 Previous Release:
8239 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8240 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
8241 Current Release:
8242 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8243 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
8244
8245
8246 2) iASL Compiler/Disassembler:
8247
8248 Fixed a problem where incorrect AML code could be generated for Package
8249 objects if optimization is disabled (via the -oa switch).
8250
8251 Fixed a problem with where incorrect AML code is generated for variable-
8252 length packages when the package length is not specified and the number
8253 of
8254 initializer values is greater than 255.
8255
8256
8257 ----------------------------------------
8258 29 July 2005. Summary of changes for version 20050729:
8259
8260 1) ACPI CA Core Subsystem:
8261
8262 Implemented support to ignore an attempt to install/load a particular
8263 ACPI
8264 table more than once. Apparently there exists BIOS code that repeatedly
8265 attempts to load the same SSDT upon certain events. With assistance from
8266 Venkatesh Pallipadi.
8267
8268 Restructured the main interface to the AML parser in order to correctly
8269 handle all exceptional conditions. This will prevent leakage of the
8270 OwnerId
8271 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
8272 some
8273 machines. With assistance from Alexey Starikovskiy.
8274
8275 Support for "module level code" has been disabled in this version due to
8276 a
8277 number of issues that have appeared on various machines. The support can
8278 be
8279 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
8280 compilation. When the issues are fully resolved, the code will be enabled
8281 by
8282 default again.
8283
8284 Modified the internal functions for debug print support to define the
8285 FunctionName parameter as a (const char *) for compatibility with
8286 compiler
8287 built-in macros such as __FUNCTION__, etc.
8288
8289 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
8290
8291 Implemented support to display an object count summary for the AML
8292 Debugger
8293 commands Object and Methods.
8294
8295 Code and Data Size: Current and previous core subsystem library sizes are
8296 shown below. These are the code and data sizes for the acpica.lib
8297 produced
8298 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8299 any ACPI driver or OSPM code. The debug version of the code includes the
8300 debug output trace mechanism and has a much larger code and data size.
8301 Note
8302 that these values will vary depending on the efficiency of the compiler
8303 and
8304 the compiler options used during generation.
8305
8306 Previous Release:
8307 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
8308 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
8309 Current Release:
8310 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8311 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
8312
8313
8314 2) iASL Compiler/Disassembler:
8315
8316 Fixed a regression that appeared in the 20050708 version of the compiler
8317 where an error message was inadvertently emitted for invocations of the
8318 _OSI
8319 reserved control method.
8320
8321 ----------------------------------------
8322 08 July 2005. Summary of changes for version 20050708:
8323
8324 1) ACPI CA Core Subsystem:
8325
8326 The use of the CPU stack in the debug version of the subsystem has been
8327 considerably reduced. Previously, a debug structure was declared in every
8328 function that used the debug macros. This structure has been removed in
8329 favor of declaring the individual elements as parameters to the debug
8330 functions. This reduces the cumulative stack use during nested execution
8331 of
8332 ACPI function calls at the cost of a small increase in the code size of
8333 the
8334 debug version of the subsystem. With assistance from Alexey Starikovskiy
8335 and
8336 Len Brown.
8337
8338 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
8339 headers to define a macro that will return the current function name at
8340 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
8341 by
8342 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
8343 compiler-dependent header, the function name is saved on the CPU stack
8344 (one
8345 pointer per function.) This mechanism is used because apparently there
8346 exists no standard ANSI-C defined macro that that returns the function
8347 name.
8348
8349 Redesigned and reimplemented the "Owner ID" mechanism used to track
8350 namespace objects created/deleted by ACPI tables and control method
8351 execution. A bitmap is now used to allocate and free the IDs, thus
8352 solving
8353 the wraparound problem present in the previous implementation. The size
8354 of
8355 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
8356 Starikovskiy).
8357
8358 Removed the UINT32_BIT and UINT16_BIT types that were used for the
8359 bitfield
8360 flag definitions within the headers for the predefined ACPI tables. These
8361 have been replaced by UINT8_BIT in order to increase the code portability
8362 of
8363 the subsystem. If the use of UINT8 remains a problem, we may be forced to
8364 eliminate bitfields entirely because of a lack of portability.
8365
8366 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
8367 This
8368 is a frequently used function and this improvement increases the
8369 performance
8370 of the entire subsystem (Alexey Starikovskiy).
8371
8372 Fixed several possible memory leaks and the inverse - premature object
8373 deletion (Alexey Starikovskiy).
8374
8375 Code and Data Size: Current and previous core subsystem library sizes are
8376 shown below. These are the code and data sizes for the acpica.lib
8377 produced
8378 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8379 any ACPI driver or OSPM code. The debug version of the code includes the
8380 debug output trace mechanism and has a much larger code and data size.
8381 Note
8382 that these values will vary depending on the efficiency of the compiler
8383 and
8384 the compiler options used during generation.
8385
8386 Previous Release:
8387 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
8388 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
8389 Current Release:
8390 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
8391 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
8392
8393 ----------------------------------------
8394 24 June 2005. Summary of changes for version 20050624:
8395
8396 1) ACPI CA Core Subsystem:
8397
8398 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
8399 the host-defined cache object. This allows the OSL implementation to
8400 define
8401 and type this object in any manner desired, simplifying the OSL
8402 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
8403 Linux, and should be defined in the OS-specific header file for other
8404 operating systems as required.
8405
8406 Changed the interface to AcpiOsAcquireObject to directly return the
8407 requested object as the function return (instead of ACPI_STATUS.) This
8408 change was made for performance reasons, since this is the purpose of the
8409 interface in the first place. AcpiOsAcquireObject is now similar to the
8410 AcpiOsAllocate interface.
8411
8412 Implemented a new AML debugger command named Businfo. This command
8413 displays
8414 information about all devices that have an associate _PRT object. The
8415 _ADR,
8416 _HID, _UID, and _CID are displayed for these devices.
8417
8418 Modified the initialization sequence in AcpiInitializeSubsystem to call
8419 the
8420 OSL interface AcpiOslInitialize first, before any local initialization.
8421 This
8422 change was required because the global initialization now calls OSL
8423 interfaces.
8424
8425 Enhanced the Dump command to display the entire contents of Package
8426 objects
8427 (including all sub-objects and their values.)
8428
8429 Restructured the code base to split some files because of size and/or
8430 because the code logically belonged in a separate file. New files are
8431 listed
8432 below. All makefiles and project files included in the ACPI CA release
8433 have
8434 been updated.
8435 utilities/utcache.c /* Local cache interfaces */
8436 utilities/utmutex.c /* Local mutex support */
8437 utilities/utstate.c /* State object support */
8438 interpreter/parser/psloop.c /* Main AML parse loop */
8439
8440 Code and Data Size: Current and previous core subsystem library sizes are
8441 shown below. These are the code and data sizes for the acpica.lib
8442 produced
8443 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8444 any ACPI driver or OSPM code. The debug version of the code includes the
8445 debug output trace mechanism and has a much larger code and data size.
8446 Note
8447 that these values will vary depending on the efficiency of the compiler
8448 and
8449 the compiler options used during generation.
8450
8451 Previous Release:
8452 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
8453 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
8454 Current Release:
8455 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
8456 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
8457
8458
8459 2) iASL Compiler/Disassembler:
8460
8461 Fixed a regression introduced in version 20050513 where the use of a
8462 Package
8463 object within a Case() statement caused a compile time exception. The
8464 original behavior has been restored (a Match() operator is emitted.)
8465
8466 ----------------------------------------
8467 17 June 2005. Summary of changes for version 20050617:
8468
8469 1) ACPI CA Core Subsystem:
8470
8471 Moved the object cache operations into the OS interface layer (OSL) to
8472 allow
8473 the host OS to handle these operations if desired (for example, the Linux
8474 OSL will invoke the slab allocator). This support is optional; the
8475 compile
8476 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
8477 cache
8478 code in the ACPI CA core. The new OSL interfaces are shown below. See
8479 utalloc.c for an example implementation, and acpiosxf.h for the exact
8480 interface definitions. With assistance from Alexey Starikovskiy.
8481 AcpiOsCreateCache
8482 AcpiOsDeleteCache
8483 AcpiOsPurgeCache
8484 AcpiOsAcquireObject
8485 AcpiOsReleaseObject
8486
8487 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
8488 return
8489 and restore a flags parameter. This fits better with many OS lock models.
8490 Note: the current execution state (interrupt handler or not) is no longer
8491 passed to these interfaces. If necessary, the OSL must determine this
8492 state
8493 by itself, a simple and fast operation. With assistance from Alexey
8494 Starikovskiy.
8495
8496 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
8497 present if the revision of the RSDP was 2 or greater. According to the
8498 ACPI
8499 specification, the XSDT is optional in all cases, and the table manager
8500 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
8501 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
8502 contain
8503 only the RSDT.
8504
8505 Fixed an interpreter problem with the Mid() operator in the case of an
8506 input
8507 string where the resulting output string is of zero length. It now
8508 correctly
8509 returns a valid, null terminated string object instead of a string object
8510 with a null pointer.
8511
8512 Fixed a problem with the control method argument handling to allow a
8513 store
8514 to an Arg object that already contains an object of type Device. The
8515 Device
8516 object is now correctly overwritten. Previously, an error was returned.
8517
8518
8519 Enhanced the debugger Find command to emit object values in addition to
8520 the
8521 found object pathnames. The output format is the same as the dump
8522 namespace
8523 command.
8524
8525 Enhanced the debugger Set command. It now has the ability to set the
8526 value
8527 of any Named integer object in the namespace (Previously, only method
8528 locals
8529 and args could be set.)
8530
8531 Code and Data Size: Current and previous core subsystem library sizes are
8532 shown below. These are the code and data sizes for the acpica.lib
8533 produced
8534 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8535 any ACPI driver or OSPM code. The debug version of the code includes the
8536 debug output trace mechanism and has a much larger code and data size.
8537 Note
8538 that these values will vary depending on the efficiency of the compiler
8539 and
8540 the compiler options used during generation.
8541
8542 Previous Release:
8543 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
8544 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
8545 Current Release:
8546 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
8547 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
8548
8549
8550 2) iASL Compiler/Disassembler:
8551
8552 Fixed a regression in the disassembler where if/else/while constructs
8553 were
8554 output incorrectly. This problem was introduced in the previous release
8555 (20050526). This problem also affected the single-step disassembly in the
8556 debugger.
8557
8558 Fixed a problem where compiling the reserved _OSI method would randomly
8559 (but
8560 rarely) produce compile errors.
8561
8562 Enhanced the disassembler to emit compilable code in the face of
8563 incorrect
8564 AML resource descriptors. If the optional ResourceSourceIndex is present,
8565 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
8566 disassembly. Otherwise, the resulting code cannot be compiled without
8567 errors.
8568
8569 ----------------------------------------
8570 26 May 2005. Summary of changes for version 20050526:
8571
8572 1) ACPI CA Core Subsystem:
8573
8574 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
8575 the module level (not within a control method.) These opcodes are
8576 executed
8577 exactly once at the time the table is loaded. This type of code was legal
8578 up
8579 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
8580 in
8581 order to provide backwards compatibility with earlier BIOS
8582 implementations.
8583 This eliminates the "Encountered executable code at module level" warning
8584 that was previously generated upon detection of such code.
8585
8586 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
8587 inadvertently be generated during the lookup of namespace objects in the
8588 second pass parse of ACPI tables and control methods. It appears that
8589 this
8590 problem could occur during the resolution of forward references to
8591 namespace
8592 objects.
8593
8594 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
8595 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
8596 allows the deadlock detection debug code to be compiled out in the normal
8597 case, improving mutex performance (and overall subsystem performance)
8598 considerably.
8599
8600 Implemented a handful of miscellaneous fixes for possible memory leaks on
8601 error conditions and error handling control paths. These fixes were
8602 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
8603
8604 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
8605 (tbxfroot.c)
8606 to prevent a fault in this error case.
8607
8608 Code and Data Size: Current and previous core subsystem library sizes are
8609 shown below. These are the code and data sizes for the acpica.lib
8610 produced
8611 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8612 any ACPI driver or OSPM code. The debug version of the code includes the
8613 debug output trace mechanism and has a much larger code and data size.
8614 Note
8615 that these values will vary depending on the efficiency of the compiler
8616 and
8617 the compiler options used during generation.
8618
8619 Previous Release:
8620 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
8621 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
8622 Current Release:
8623 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
8624 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
8625
8626
8627 2) iASL Compiler/Disassembler:
8628
8629 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
8630 the module level (not within a control method.) These operators will be
8631 executed once at the time the table is loaded. This type of code was
8632 legal
8633 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
8634 compiler in order to provide backwards compatibility with earlier BIOS
8635 ASL
8636 code.
8637
8638 The ACPI integer width (specified via the table revision ID or the -r
8639 override, 32 or 64 bits) is now used internally during compile-time
8640 constant
8641 folding to ensure that constants are truncated to 32 bits if necessary.
8642 Previously, the revision ID value was only emitted in the AML table
8643 header.
8644
8645 An error message is now generated for the Mutex and Method operators if
8646 the
8647 SyncLevel parameter is outside the legal range of 0 through 15.
8648
8649 Fixed a problem with the Method operator ParameterTypes list handling
8650 (ACPI
8651 3.0). Previously, more than 2 types or 2 arguments generated a syntax
8652 error.
8653 The actual underlying implementation of method argument typechecking is
8654 still under development, however.
8655
8656 ----------------------------------------
8657 13 May 2005. Summary of changes for version 20050513:
8658
8659 1) ACPI CA Core Subsystem:
8660
8661 Implemented support for PCI Express root bridges -- added support for
8662 device
8663 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
8664
8665 The interpreter now automatically truncates incoming 64-bit constants to
8666 32
8667 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
8668 This
8669 also affects the iASL compiler constant folding. (Note: as per below, the
8670 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
8671
8672 Fixed a problem where string and buffer objects with "static" pointers
8673 (pointers to initialization data within an ACPI table) were not handled
8674 consistently. The internal object copy operation now always copies the
8675 data
8676 to a newly allocated buffer, regardless of whether the source object is
8677 static or not.
8678
8679 Fixed a problem with the FromBCD operator where an implicit result
8680 conversion was improperly performed while storing the result to the
8681 target
8682 operand. Since this is an "explicit conversion" operator, the implicit
8683 conversion should never be performed on the output.
8684
8685 Fixed a problem with the CopyObject operator where a copy to an existing
8686 named object did not always completely overwrite the existing object
8687 stored
8688 at name. Specifically, a buffer-to-buffer copy did not delete the
8689 existing
8690 buffer.
8691
8692 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
8693 and
8694 structs for consistency.
8695
8696 Code and Data Size: Current and previous core subsystem library sizes are
8697 shown below. These are the code and data sizes for the acpica.lib
8698 produced
8699 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8700 any ACPI driver or OSPM code. The debug version of the code includes the
8701 debug output trace mechanism and has a much larger code and data size.
8702 Note
8703 that these values will vary depending on the efficiency of the compiler
8704 and
8705 the compiler options used during generation.
8706
8707 Previous Release:
8708 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
8709 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
8710 Current Release: (Same sizes)
8711 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
8712 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
8713
8714
8715 2) iASL Compiler/Disassembler:
8716
8717 The compiler now emits a warning if an attempt is made to generate a 64-
8718 bit
8719 integer constant from within a 32-bit ACPI table (Revision < 2). The
8720 integer
8721 is truncated to 32 bits.
8722
8723 Fixed a problem with large package objects: if the static length of the
8724 package is greater than 255, the "variable length package" opcode is
8725 emitted. Previously, this caused an error. This requires an update to the
8726 ACPI spec, since it currently (incorrectly) states that packages larger
8727 than
8728 255 elements are not allowed.
8729
8730 The disassembler now correctly handles variable length packages and
8731 packages
8732 larger than 255 elements.
8733
8734 ----------------------------------------
8735 08 April 2005. Summary of changes for version 20050408:
8736
8737 1) ACPI CA Core Subsystem:
8738
8739 Fixed three cases in the interpreter where an "index" argument to an ASL
8740 function was still (internally) 32 bits instead of the required 64 bits.
8741 This was the Index argument to the Index, Mid, and Match operators.
8742
8743 The "strupr" function is now permanently local (AcpiUtStrupr), since this
8744 is
8745 not a POSIX-defined function and not present in most kernel-level C
8746 libraries. All references to the C library strupr function have been
8747 removed
8748 from the headers.
8749
8750 Completed the deployment of static functions/prototypes. All prototypes
8751 with
8752 the static attribute have been moved from the headers to the owning C
8753 file.
8754
8755 Implemented an extract option (-e) for the AcpiBin utility (AML binary
8756 utility). This option allows the utility to extract individual ACPI
8757 tables
8758 from the output of AcpiDmp. It provides the same functionality of the
8759 acpixtract.pl perl script without the worry of setting the correct perl
8760 options. AcpiBin runs on Windows and has not yet been generated/validated
8761 in
8762 the Linux/Unix environment (but should be soon).
8763
8764 Updated and fixed the table dump option for AcpiBin (-d). This option
8765 converts a single ACPI table to a hex/ascii file, similar to the output
8766 of
8767 AcpiDmp.
8768
8769 Code and Data Size: Current and previous core subsystem library sizes are
8770 shown below. These are the code and data sizes for the acpica.lib
8771 produced
8772 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8773 any ACPI driver or OSPM code. The debug version of the code includes the
8774 debug output trace mechanism and has a much larger code and data size.
8775 Note
8776 that these values will vary depending on the efficiency of the compiler
8777 and
8778 the compiler options used during generation.
8779
8780 Previous Release:
8781 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
8782 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
8783 Current Release:
8784 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
8785 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
8786
8787
8788 2) iASL Compiler/Disassembler:
8789
8790 Disassembler fix: Added a check to ensure that the table length found in
8791 the
8792 ACPI table header within the input file is not longer than the actual
8793 input
8794 file size. This indicates some kind of file or table corruption.
8795
8796 ----------------------------------------
8797 29 March 2005. Summary of changes for version 20050329:
8798
8799 1) ACPI CA Core Subsystem:
8800
8801 An error is now generated if an attempt is made to create a Buffer Field
8802 of
8803 length zero (A CreateField with a length operand of zero.)
8804
8805 The interpreter now issues a warning whenever executable code at the
8806 module
8807 level is detected during ACPI table load. This will give some idea of the
8808 prevalence of this type of code.
8809
8810 Implemented support for references to named objects (other than control
8811 methods) within package objects.
8812
8813 Enhanced package object output for the debug object. Package objects are
8814 now
8815 completely dumped, showing all elements.
8816
8817 Enhanced miscellaneous object output for the debug object. Any object can
8818 now be written to the debug object (for example, a device object can be
8819 written, and the type of the object will be displayed.)
8820
8821 The "static" qualifier has been added to all local functions across both
8822 the
8823 core subsystem and the iASL compiler.
8824
8825 The number of "long" lines (> 80 chars) within the source has been
8826 significantly reduced, by about 1/3.
8827
8828 Cleaned up all header files to ensure that all CA/iASL functions are
8829 prototyped (even static functions) and the formatting is consistent.
8830
8831 Two new header files have been added, acopcode.h and acnames.h.
8832
8833 Removed several obsolete functions that were no longer used.
8834
8835 Code and Data Size: Current and previous core subsystem library sizes are
8836 shown below. These are the code and data sizes for the acpica.lib
8837 produced
8838 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8839 any ACPI driver or OSPM code. The debug version of the code includes the
8840 debug output trace mechanism and has a much larger code and data size.
8841 Note
8842 that these values will vary depending on the efficiency of the compiler
8843 and
8844 the compiler options used during generation.
8845
8846 Previous Release:
8847 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
8848 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
8849 Current Release:
8850 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
8851 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
8852
8853
8854
8855 2) iASL Compiler/Disassembler:
8856
8857 Fixed a problem with the resource descriptor generation/support. For the
8858 ResourceSourceIndex and the ResourceSource fields, both must be present,
8859 or
8860 both must be not present - can't have one without the other.
8861
8862 The compiler now returns non-zero from the main procedure if any errors
8863 have
8864 occurred during the compilation.
8865
8866
8867 ----------------------------------------
8868 09 March 2005. Summary of changes for version 20050309:
8869
8870 1) ACPI CA Core Subsystem:
8871
8872 The string-to-buffer implicit conversion code has been modified again
8873 after
8874 a change to the ACPI specification. In order to match the behavior of
8875 the
8876 other major ACPI implementation, the target buffer is no longer truncated
8877 if
8878 the source string is smaller than an existing target buffer. This change
8879 requires an update to the ACPI spec, and should eliminate the recent
8880 AE_AML_BUFFER_LIMIT issues.
8881
8882 The "implicit return" support was rewritten to a new algorithm that
8883 solves
8884 the general case. Rather than attempt to determine when a method is about
8885 to
8886 exit, the result of every ASL operator is saved momentarily until the
8887 very
8888 next ASL operator is executed. Therefore, no matter how the method exits,
8889 there will always be a saved implicit return value. This feature is only
8890 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
8891 eliminate
8892 AE_AML_NO_RETURN_VALUE errors when enabled.
8893
8894 Implemented implicit conversion support for the predicate (operand) of
8895 the
8896 If, Else, and While operators. String and Buffer arguments are
8897 automatically
8898 converted to Integers.
8899
8900 Changed the string-to-integer conversion behavior to match the new ACPI
8901 errata: "If no integer object exists, a new integer is created. The ASCII
8902 string is interpreted as a hexadecimal constant. Each string character is
8903 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
8904 with the first character as the most significant digit, and ending with
8905 the
8906 first non-hexadecimal character or end-of-string." This means that the
8907 first
8908 non-hex character terminates the conversion and this is the code that was
8909 changed.
8910
8911 Fixed a problem where the ObjectType operator would fail (fault) when
8912 used
8913 on an Index of a Package which pointed to a null package element. The
8914 operator now properly returns zero (Uninitialized) in this case.
8915
8916 Fixed a problem where the While operator used excessive memory by not
8917 properly popping the result stack during execution. There was no memory
8918 leak
8919 after execution, however. (Code provided by Valery Podrezov.)
8920
8921 Fixed a problem where references to control methods within Package
8922 objects
8923 caused the method to be invoked, instead of producing a reference object
8924 pointing to the method.
8925
8926 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
8927 to
8928 improve performance and reduce code size. (Code provided by Alexey
8929 Starikovskiy.)
8930
8931 Code and Data Size: Current and previous core subsystem library sizes are
8932 shown below. These are the code and data sizes for the acpica.lib
8933 produced
8934 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8935 any ACPI driver or OSPM code. The debug version of the code includes the
8936 debug output trace mechanism and has a much larger code and data size.
8937 Note
8938 that these values will vary depending on the efficiency of the compiler
8939 and
8940 the compiler options used during generation.
8941
8942 Previous Release:
8943 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
8944 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
8945 Current Release:
8946 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
8947 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
8948
8949
8950 2) iASL Compiler/Disassembler:
8951
8952 Fixed a problem with the Return operator with no arguments. Since the AML
8953 grammar for the byte encoding requires an operand for the Return opcode,
8954 the
8955 compiler now emits a Return(Zero) for this case. An ACPI specification
8956 update has been written for this case.
8957
8958 For tables other than the DSDT, namepath optimization is automatically
8959 disabled. This is because SSDTs can be loaded anywhere in the namespace,
8960 the
8961 compiler has no knowledge of where, and thus cannot optimize namepaths.
8962
8963 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
8964 inadvertently omitted from the ACPI specification, and will require an
8965 update to the spec.
8966
8967 The source file scan for ASCII characters is now optional (-a). This
8968 change
8969 was made because some vendors place non-ascii characters within comments.
8970 However, the scan is simply a brute-force byte compare to ensure all
8971 characters in the file are in the range 0x00 to 0x7F.
8972
8973 Fixed a problem with the CondRefOf operator where the compiler was
8974 inappropriately checking for the existence of the target. Since the point
8975 of
8976 the operator is to check for the existence of the target at run-time, the
8977 compiler no longer checks for the target existence.
8978
8979 Fixed a problem where errors generated from the internal AML interpreter
8980 during constant folding were not handled properly, causing a fault.
8981
8982 Fixed a problem with overly aggressive range checking for the Stall
8983 operator. The valid range (max 255) is now only checked if the operand is
8984 of
8985 type Integer. All other operand types cannot be statically checked.
8986
8987 Fixed a problem where control method references within the RefOf,
8988 DeRefOf,
8989 and ObjectType operators were not treated properly. They are now treated
8990 as
8991 actual references, not method invocations.
8992
8993 Fixed and enhanced the "list namespace" option (-ln). This option was
8994 broken
8995 a number of releases ago.
8996
8997 Improved error handling for the Field, IndexField, and BankField
8998 operators.
8999 The compiler now cleanly reports and recovers from errors in the field
9000 component (FieldUnit) list.
9001
9002 Fixed a disassembler problem where the optional ResourceDescriptor fields
9003 TRS and TTP were not always handled correctly.
9004
9005 Disassembler - Comments in output now use "//" instead of "/*"
9006
9007 ----------------------------------------
9008 28 February 2005. Summary of changes for version 20050228:
9009
9010 1) ACPI CA Core Subsystem:
9011
9012 Fixed a problem where the result of an Index() operator (an object
9013 reference) must increment the reference count on the target object for
9014 the
9015 life of the object reference.
9016
9017 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
9018 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
9019 WordSpace
9020 resource descriptors.
9021
9022 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
9023 Space Descriptor" string, indicating interpreter support for the
9024 descriptors
9025 above.
9026
9027 Implemented header support for the new ACPI 3.0 FADT flag bits.
9028
9029 Implemented header support for the new ACPI 3.0 PCI Express bits for the
9030 PM1
9031 status/enable registers.
9032
9033 Updated header support for the MADT processor local Apic struct and MADT
9034 platform interrupt source struct for new ACPI 3.0 fields.
9035
9036 Implemented header support for the SRAT and SLIT ACPI tables.
9037
9038 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
9039 flag
9040 at runtime.
9041
9042 Code and Data Size: Current and previous core subsystem library sizes are
9043 shown below. These are the code and data sizes for the acpica.lib
9044 produced
9045 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9046 any ACPI driver or OSPM code. The debug version of the code includes the
9047 debug output trace mechanism and has a much larger code and data size.
9048 Note
9049 that these values will vary depending on the efficiency of the compiler
9050 and
9051 the compiler options used during generation.
9052
9053 Previous Release:
9054 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
9055 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
9056 Current Release:
9057 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9058 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
9059
9060
9061 2) iASL Compiler/Disassembler:
9062
9063 Fixed a problem with the internal 64-bit String-to-integer conversion
9064 with
9065 strings less than two characters long.
9066
9067 Fixed a problem with constant folding where the result of the Index()
9068 operator can not be considered a constant. This means that Index() cannot
9069 be
9070 a type3 opcode and this will require an update to the ACPI specification.
9071
9072 Disassembler: Implemented support for the TTP, MTP, and TRS resource
9073 descriptor fields. These fields were inadvertently ignored and not output
9074 in
9075 the disassembly of the resource descriptor.
9076
9077
9078 ----------------------------------------
9079 11 February 2005. Summary of changes for version 20050211:
9080
9081 1) ACPI CA Core Subsystem:
9082
9083 Implemented ACPI 3.0 support for implicit conversion within the Match()
9084 operator. MatchObjects can now be of type integer, buffer, or string
9085 instead
9086 of just type integer. Package elements are implicitly converted to the
9087 type
9088 of the MatchObject. This change aligns the behavior of Match() with the
9089 behavior of the other logical operators (LLess(), etc.) It also requires
9090 an
9091 errata change to the ACPI specification as this support was intended for
9092 ACPI 3.0, but was inadvertently omitted.
9093
9094 Fixed a problem with the internal implicit "to buffer" conversion.
9095 Strings
9096 that are converted to buffers will cause buffer truncation if the string
9097 is
9098 smaller than the target buffer. Integers that are converted to buffers
9099 will
9100 not cause buffer truncation, only zero extension (both as per the ACPI
9101 spec.) The problem was introduced when code was added to truncate the
9102 buffer, but this should not be performed in all cases, only the string
9103 case.
9104
9105 Fixed a problem with the Buffer and Package operators where the
9106 interpreter
9107 would get confused if two such operators were used as operands to an ASL
9108 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
9109 stack was not being popped after the execution of these operators,
9110 resulting
9111 in an AE_NO_RETURN_VALUE exception.
9112
9113 Fixed a problem with constructs of the form Store(Index(...),...). The
9114 reference object returned from Index was inadvertently resolved to an
9115 actual
9116 value. This problem was introduced in version 20050114 when the behavior
9117 of
9118 Store() was modified to restrict the object types that can be used as the
9119 source operand (to match the ACPI specification.)
9120
9121 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
9122
9123 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
9124
9125 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
9126
9127 Code and Data Size: Current and previous core subsystem library sizes are
9128 shown below. These are the code and data sizes for the acpica.lib
9129 produced
9130 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9131 any ACPI driver or OSPM code. The debug version of the code includes the
9132 debug output trace mechanism and has a much larger code and data size.
9133 Note
9134 that these values will vary depending on the efficiency of the compiler
9135 and
9136 the compiler options used during generation.
9137
9138 Previous Release:
9139 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
9140 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
9141 Current Release:
9142 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
9143 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
9144
9145
9146 2) iASL Compiler/Disassembler:
9147
9148 Fixed a code generation problem in the constant folding optimization code
9149 where incorrect code was generated if a constant was reduced to a buffer
9150 object (i.e., a reduced type 5 opcode.)
9151
9152 Fixed a typechecking problem for the ToBuffer operator. Caused by an
9153 incorrect return type in the internal opcode information table.
9154
9155 ----------------------------------------
9156 25 January 2005. Summary of changes for version 20050125:
9157
9158 1) ACPI CA Core Subsystem:
9159
9160 Fixed a recently introduced problem with the Global Lock where the
9161 underlying semaphore was not created. This problem was introduced in
9162 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
9163 Acquire() operation on _GL.
9164
9165 The local object cache is now optional, and is disabled by default. Both
9166 AcpiExec and the iASL compiler enable the cache because they run in user
9167 mode and this enhances their performance. #define
9168 ACPI_ENABLE_OBJECT_CACHE
9169 to enable the local cache.
9170
9171 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
9172 the
9173 optional "implicit return" support where an error was returned if no
9174 return
9175 object was expected, but one was implicitly returned. AE_OK is now
9176 returned
9177 in this case and the implicitly returned object is deleted.
9178 AcpiUtEvaluateObject is only occasionally used, and only to execute
9179 reserved
9180 methods such as _STA and _INI where the return type is known up front.
9181
9182 Fixed a few issues with the internal convert-to-integer code. It now
9183 returns
9184 an error if an attempt is made to convert a null string, a string of only
9185 blanks/tabs, or a zero-length buffer. This affects both implicit
9186 conversion
9187 and explicit conversion via the ToInteger() operator.
9188
9189 The internal debug code in AcpiUtAcquireMutex has been commented out. It
9190 is
9191 not needed for normal operation and should increase the performance of
9192 the
9193 entire subsystem. The code remains in case it is needed for debug
9194 purposes
9195 again.
9196
9197 The AcpiExec source and makefile are included in the Unix/Linux package
9198 for
9199 the first time.
9200
9201 Code and Data Size: Current and previous core subsystem library sizes are
9202 shown below. These are the code and data sizes for the acpica.lib
9203 produced
9204 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9205 any ACPI driver or OSPM code. The debug version of the code includes the
9206 debug output trace mechanism and has a much larger code and data size.
9207 Note
9208 that these values will vary depending on the efficiency of the compiler
9209 and
9210 the compiler options used during generation.
9211
9212 Previous Release:
9213 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
9214 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
9215 Current Release:
9216 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
9217 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
9218
9219 2) iASL Compiler/Disassembler:
9220
9221 Switch/Case support: A warning is now issued if the type of the Switch
9222 value
9223 cannot be determined at compile time. For example, Switch(Arg0) will
9224 generate the warning, and the type is assumed to be an integer. As per
9225 the
9226 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
9227 the
9228 warning.
9229
9230 Switch/Case support: Implemented support for buffer and string objects as
9231 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
9232 buffers and strings.
9233
9234 Switch/Case support: The emitted code for the LEqual() comparisons now
9235 uses
9236 the switch value as the first operand, not the second. The case value is
9237 now
9238 the second operand, and this allows the case value to be implicitly
9239 converted to the type of the switch value, not the other way around.
9240
9241 Switch/Case support: Temporary variables are now emitted immediately
9242 within
9243 the control method, not at the global level. This means that there are
9244 now
9245 36 temps available per-method, not 36 temps per-module as was the case
9246 with
9247 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
9248
9249 ----------------------------------------
9250 14 January 2005. Summary of changes for version 20050114:
9251
9252 Added 2005 copyright to all module headers. This affects every module in
9253 the core subsystem, iASL compiler, and the utilities.
9254
9255 1) ACPI CA Core Subsystem:
9256
9257 Fixed an issue with the String-to-Buffer conversion code where the string
9258 null terminator was not included in the buffer after conversion, but
9259 there
9260 is existing ASL that assumes the string null terminator is included. This
9261 is
9262 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
9263 introduced in the previous version when the code was updated to correctly
9264 set the converted buffer size as per the ACPI specification. The ACPI
9265 spec
9266 is ambiguous and will be updated to specify that the null terminator must
9267 be
9268 included in the converted buffer. This also affects the ToBuffer() ASL
9269 operator.
9270
9271 Fixed a problem with the Mid() ASL/AML operator where it did not work
9272 correctly on Buffer objects. Newly created sub-buffers were not being
9273 marked
9274 as initialized.
9275
9276
9277 Fixed a problem in AcpiTbFindTable where incorrect string compares were
9278 performed on the OemId and OemTableId table header fields. These fields
9279 are
9280 not null terminated, so strncmp is now used instead of strcmp.
9281
9282 Implemented a restriction on the Store() ASL/AML operator to align the
9283 behavior with the ACPI specification. Previously, any object could be
9284 used
9285 as the source operand. Now, the only objects that may be used are
9286 Integers,
9287 Buffers, Strings, Packages, Object References, and DDB Handles. If
9288 necessary, the original behavior can be restored by enabling the
9289 EnableInterpreterSlack flag.
9290
9291 Enhanced the optional "implicit return" support to allow an implicit
9292 return
9293 value from methods that are invoked externally via the AcpiEvaluateObject
9294 interface. This enables implicit returns from the _STA and _INI methods,
9295 for example.
9296
9297 Changed the Revision() ASL/AML operator to return the current version of
9298 the
9299 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
9300 returned
9301 the supported ACPI version (This is the function of the _REV method).
9302
9303 Updated the _REV predefined method to return the currently supported
9304 version
9305 of ACPI, now 3.
9306
9307 Implemented batch mode option for the AcpiExec utility (-b).
9308
9309 Code and Data Size: Current and previous core subsystem library sizes are
9310 shown below. These are the code and data sizes for the acpica.lib
9311 produced
9312 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9313 any ACPI driver or OSPM code. The debug version of the code includes the
9314 debug output trace mechanism and has a much larger code and data size.
9315 Note
9316 that these values will vary depending on the efficiency of the compiler
9317 and
9318 the compiler options used during generation.
9319
9320 Previous Release:
9321 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9322 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
9323 Current Release:
9324 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
9325 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
9326
9327 ----------------------------------------
9328 10 December 2004. Summary of changes for version 20041210:
9329
9330 ACPI 3.0 support is nearing completion in both the iASL compiler and the
9331 ACPI CA core subsystem.
9332
9333 1) ACPI CA Core Subsystem:
9334
9335 Fixed a problem in the ToDecimalString operator where the resulting
9336 string
9337 length was incorrectly calculated. The length is now calculated exactly,
9338 eliminating incorrect AE_STRING_LIMIT exceptions.
9339
9340 Fixed a problem in the ToHexString operator to allow a maximum 200
9341 character
9342 string to be produced.
9343
9344 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
9345 copy
9346 routine where the length of the resulting buffer was not truncated to the
9347 new size (if the target buffer already existed).
9348
9349 Code and Data Size: Current and previous core subsystem library sizes are
9350 shown below. These are the code and data sizes for the acpica.lib
9351 produced
9352 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9353 any ACPI driver or OSPM code. The debug version of the code includes the
9354 debug output trace mechanism and has a much larger code and data size.
9355 Note
9356 that these values will vary depending on the efficiency of the compiler
9357 and
9358 the compiler options used during generation.
9359
9360 Previous Release:
9361 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9362 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
9363 Current Release:
9364 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9365 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
9366
9367
9368 2) iASL Compiler/Disassembler:
9369
9370 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
9371 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
9372 Includes support in the disassembler.
9373
9374 Implemented support for the new (ACPI 3.0) parameter to the Register
9375 macro,
9376 AccessSize.
9377
9378 Fixed a problem where the _HE resource name for the Interrupt macro was
9379 referencing bit 0 instead of bit 1.
9380
9381 Implemented check for maximum 255 interrupts in the Interrupt macro.
9382
9383 Fixed a problem with the predefined resource descriptor names where
9384 incorrect AML code was generated if the offset within the resource buffer
9385 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
9386 but did not update the surrounding package lengths.
9387
9388 Changes to the Dma macro: All channels within the channel list must be
9389 in
9390 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
9391 optional (default is BusMaster).
9392
9393 Implemented check for maximum 7 data bytes for the VendorShort macro.
9394
9395 The ReadWrite parameter is now optional for the Memory32 and similar
9396 macros.
9397
9398 ----------------------------------------
9399 03 December 2004. Summary of changes for version 20041203:
9400
9401 1) ACPI CA Core Subsystem:
9402
9403 The low-level field insertion/extraction code (exfldio) has been
9404 completely
9405 rewritten to eliminate unnecessary complexity, bugs, and boundary
9406 conditions.
9407
9408 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
9409 ToDecimalString
9410 operators where the input operand could be inadvertently deleted if no
9411 conversion was necessary (e.g., if the input to ToInteger was an Integer
9412 object.)
9413
9414 Fixed a problem with the ToDecimalString and ToHexString where an
9415 incorrect
9416 exception code was returned if the resulting string would be > 200 chars.
9417 AE_STRING_LIMIT is now returned.
9418
9419 Fixed a problem with the Concatenate operator where AE_OK was always
9420 returned, even if the operation failed.
9421
9422 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
9423 semaphores to be allocated.
9424
9425 Code and Data Size: Current and previous core subsystem library sizes are
9426 shown below. These are the code and data sizes for the acpica.lib
9427 produced
9428 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9429 any ACPI driver or OSPM code. The debug version of the code includes the
9430 debug output trace mechanism and has a much larger code and data size.
9431 Note
9432 that these values will vary depending on the efficiency of the compiler
9433 and
9434 the compiler options used during generation.
9435
9436 Previous Release:
9437 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
9438 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
9439 Current Release:
9440 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9441 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
9442
9443
9444 2) iASL Compiler/Disassembler:
9445
9446 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
9447 recently introduced in 20041119.
9448
9449 Fixed a problem with the ToUUID macro where the upper nybble of each
9450 buffer
9451 byte was inadvertently set to zero.
9452
9453 ----------------------------------------
9454 19 November 2004. Summary of changes for version 20041119:
9455
9456 1) ACPI CA Core Subsystem:
9457
9458 Fixed a problem in the internal ConvertToInteger routine where new
9459 integers
9460 were not truncated to 32 bits for 32-bit ACPI tables. This routine
9461 converts
9462 buffers and strings to integers.
9463
9464 Implemented support to store a value to an Index() on a String object.
9465 This
9466 is an ACPI 2.0 feature that had not yet been implemented.
9467
9468 Implemented new behavior for storing objects to individual package
9469 elements
9470 (via the Index() operator). The previous behavior was to invoke the
9471 implicit
9472 conversion rules if an object was already present at the index. The new
9473 behavior is to simply delete any existing object and directly store the
9474 new
9475 object. Although the ACPI specification seems unclear on this subject,
9476 other
9477 ACPI implementations behave in this manner. (This is the root of the
9478 AE_BAD_HEX_CONSTANT issue.)
9479
9480 Modified the RSDP memory scan mechanism to support the extended checksum
9481 for
9482 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
9483 RSDP signature is found with a valid checksum.
9484
9485 Code and Data Size: Current and previous core subsystem library sizes are
9486 shown below. These are the code and data sizes for the acpica.lib
9487 produced
9488 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9489 any ACPI driver or OSPM code. The debug version of the code includes the
9490 debug output trace mechanism and has a much larger code and data size.
9491 Note
9492 that these values will vary depending on the efficiency of the compiler
9493 and
9494 the compiler options used during generation.
9495
9496 Previous Release:
9497 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
9498 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
9499 Current Release:
9500 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
9501 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
9502
9503
9504 2) iASL Compiler/Disassembler:
9505
9506 Fixed a missing semicolon in the aslcompiler.y file.
9507
9508 ----------------------------------------
9509 05 November 2004. Summary of changes for version 20041105:
9510
9511 1) ACPI CA Core Subsystem:
9512
9513 Implemented support for FADT revision 2. This was an interim table
9514 (between
9515 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
9516
9517 Implemented optional support to allow uninitialized LocalX and ArgX
9518 variables in a control method. The variables are initialized to an
9519 Integer
9520 object with a value of zero. This support is enabled by setting the
9521 AcpiGbl_EnableInterpreterSlack flag to TRUE.
9522
9523 Implemented support for Integer objects for the SizeOf operator. Either
9524 4
9525 or 8 is returned, depending on the current integer size (32-bit or 64-
9526 bit,
9527 depending on the parent table revision).
9528
9529 Fixed a problem in the implementation of the SizeOf and ObjectType
9530 operators
9531 where the operand was resolved to a value too early, causing incorrect
9532 return values for some objects.
9533
9534 Fixed some possible memory leaks during exceptional conditions.
9535
9536 Code and Data Size: Current and previous core subsystem library sizes are
9537 shown below. These are the code and data sizes for the acpica.lib
9538 produced
9539 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9540 any ACPI driver or OSPM code. The debug version of the code includes the
9541 debug output trace mechanism and has a much larger code and data size.
9542 Note
9543 that these values will vary depending on the efficiency of the compiler
9544 and
9545 the compiler options used during generation.
9546
9547 Previous Release:
9548 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
9549 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
9550 Current Release:
9551 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
9552 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
9553
9554
9555 2) iASL Compiler/Disassembler:
9556
9557 Implemented support for all ACPI 3.0 reserved names and methods.
9558
9559 Implemented all ACPI 3.0 grammar elements in the front-end, including
9560 support for semicolons.
9561
9562 Implemented the ACPI 3.0 Function() and ToUUID() macros
9563
9564 Fixed a problem in the disassembler where a Scope() operator would not be
9565 emitted properly if the target of the scope was in another table.
9566
9567 ----------------------------------------
9568 15 October 2004. Summary of changes for version 20041015:
9569
9570 Note: ACPI CA is currently undergoing an in-depth and complete formal
9571 evaluation to test/verify the following areas. Other suggestions are
9572 welcome. This will result in an increase in the frequency of releases and
9573 the number of bug fixes in the next few months.
9574 - Functional tests for all ASL/AML operators
9575 - All implicit/explicit type conversions
9576 - Bit fields and operation regions
9577 - 64-bit math support and 32-bit-only "truncated" math support
9578 - Exceptional conditions, both compiler and interpreter
9579 - Dynamic object deletion and memory leaks
9580 - ACPI 3.0 support when implemented
9581 - External interfaces to the ACPI subsystem
9582
9583
9584 1) ACPI CA Core Subsystem:
9585
9586 Fixed two alignment issues on 64-bit platforms - within debug statements
9587 in
9588 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
9589 Address
9590 field within the non-aligned ACPI generic address structure.
9591
9592 Fixed a problem in the Increment and Decrement operators where incorrect
9593 operand resolution could result in the inadvertent modification of the
9594 original integer when the integer is passed into another method as an
9595 argument and the arg is then incremented/decremented.
9596
9597 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
9598 bit
9599 BCD number were truncated during conversion.
9600
9601 Fixed a problem in the ToDecimal operator where the length of the
9602 resulting
9603 string could be set incorrectly too long if the input operand was a
9604 Buffer
9605 object.
9606
9607 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
9608 (0)
9609 within a buffer would prematurely terminate a compare between buffer
9610 objects.
9611
9612 Added a check for string overflow (>200 characters as per the ACPI
9613 specification) during the Concatenate operator with two string operands.
9614
9615 Code and Data Size: Current and previous core subsystem library sizes are
9616 shown below. These are the code and data sizes for the acpica.lib
9617 produced
9618 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9619 any ACPI driver or OSPM code. The debug version of the code includes the
9620 debug output trace mechanism and has a much larger code and data size.
9621 Note
9622 that these values will vary depending on the efficiency of the compiler
9623 and
9624 the compiler options used during generation.
9625
9626 Previous Release:
9627 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
9628 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
9629 Current Release:
9630 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
9631 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
9632
9633
9634
9635 2) iASL Compiler/Disassembler:
9636
9637 Allow the use of the ObjectType operator on uninitialized Locals and Args
9638 (returns 0 as per the ACPI specification).
9639
9640 Fixed a problem where the compiler would fault if there was a syntax
9641 error
9642 in the FieldName of all of the various CreateXXXField operators.
9643
9644 Disallow the use of lower case letters within the EISAID macro, as per
9645 the
9646 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
9647 Where
9648 U is an uppercase letter and N is a hex digit.
9649
9650
9651 ----------------------------------------
9652 06 October 2004. Summary of changes for version 20041006:
9653
9654 1) ACPI CA Core Subsystem:
9655
9656 Implemented support for the ACPI 3.0 Timer operator. This ASL function
9657 implements a 64-bit timer with 100 nanosecond granularity.
9658
9659 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
9660 implement the ACPI 3.0 Timer operator. This allows the host OS to
9661 implement
9662 the timer with the best clock available. Also, it keeps the core
9663 subsystem
9664 out of the clock handling business, since the host OS (usually) performs
9665 this function.
9666
9667 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
9668 functions use a 64-bit address which is part of the packed ACPI Generic
9669 Address Structure. Since the structure is non-aligned, the alignment
9670 macros
9671 are now used to extract the address to a local variable before use.
9672
9673 Fixed a problem where the ToInteger operator assumed all input strings
9674 were
9675 hexadecimal. The operator now handles both decimal strings and hex
9676 strings
9677 (prefixed with "0x").
9678
9679 Fixed a problem where the string length in the string object created as a
9680 result of the internal ConvertToString procedure could be incorrect. This
9681 potentially affected all implicit conversions and also the
9682 ToDecimalString
9683 and ToHexString operators.
9684
9685 Fixed two problems in the ToString operator. If the length parameter was
9686 zero, an incorrect string object was created and the value of the input
9687 length parameter was inadvertently changed from zero to Ones.
9688
9689 Fixed a problem where the optional ResourceSource string in the
9690 ExtendedIRQ
9691 resource macro was ignored.
9692
9693 Simplified the interfaces to the internal division functions, reducing
9694 code
9695 size and complexity.
9696
9697 Code and Data Size: Current and previous core subsystem library sizes are
9698 shown below. These are the code and data sizes for the acpica.lib
9699 produced
9700 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9701 any ACPI driver or OSPM code. The debug version of the code includes the
9702 debug output trace mechanism and has a much larger code and data size.
9703 Note
9704 that these values will vary depending on the efficiency of the compiler
9705 and
9706 the compiler options used during generation.
9707
9708 Previous Release:
9709 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
9710 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
9711 Current Release:
9712 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
9713 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
9714
9715
9716 2) iASL Compiler/Disassembler:
9717
9718 Implemented support for the ACPI 3.0 Timer operator.
9719
9720 Fixed a problem where the Default() operator was inadvertently ignored in
9721 a
9722 Switch/Case block. This was a problem in the translation of the Switch
9723 statement to If...Else pairs.
9724
9725 Added support to allow a standalone Return operator, with no parentheses
9726 (or
9727 operands).
9728
9729 Fixed a problem with code generation for the ElseIf operator where the
9730 translated Else...If parse tree was improperly constructed leading to the
9731 loss of some code.
9732
9733 ----------------------------------------
9734 22 September 2004. Summary of changes for version 20040922:
9735
9736 1) ACPI CA Core Subsystem:
9737
9738 Fixed a problem with the implementation of the LNot() operator where
9739 "Ones"
9740 was not returned for the TRUE case. Changed the code to return Ones
9741 instead
9742 of (!Arg) which was usually 1. This change affects iASL constant folding
9743 for
9744 this operator also.
9745
9746 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
9747 not
9748 initialized properly -- Now zero the entire buffer in this case where the
9749 buffer already exists.
9750
9751 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
9752 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
9753 related code considerably. This will require changes/updates to all OS
9754 interface layers (OSLs.)
9755
9756 Implemented a new external interface, AcpiInstallExceptionHandler, to
9757 allow
9758 a system exception handler to be installed. This handler is invoked upon
9759 any
9760 run-time exception that occurs during control method execution.
9761
9762 Added support for the DSDT in AcpiTbFindTable. This allows the
9763 DataTableRegion() operator to access the local copy of the DSDT.
9764
9765 Code and Data Size: Current and previous core subsystem library sizes are
9766 shown below. These are the code and data sizes for the acpica.lib
9767 produced
9768 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9769 any ACPI driver or OSPM code. The debug version of the code includes the
9770 debug output trace mechanism and has a much larger code and data size.
9771 Note
9772 that these values will vary depending on the efficiency of the compiler
9773 and
9774 the compiler options used during generation.
9775
9776 Previous Release:
9777 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
9778 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
9779 Current Release:
9780 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
9781 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
9782
9783
9784 2) iASL Compiler/Disassembler:
9785
9786 Fixed a problem with constant folding and the LNot operator. LNot was
9787 returning 1 in the TRUE case, not Ones as per the ACPI specification.
9788 This
9789 could result in the generation of an incorrect folded/reduced constant.
9790
9791 End-Of-File is now allowed within a "//"-style comment. A parse error no
9792 longer occurs if such a comment is at the very end of the input ASL
9793 source
9794 file.
9795
9796 Implemented the "-r" option to override the Revision in the table header.
9797 The initial use of this option will be to simplify the evaluation of the
9798 AML
9799 interpreter by allowing a single ASL source module to be compiled for
9800 either
9801 32-bit or 64-bit integers.
9802
9803
9804 ----------------------------------------
9805 27 August 2004. Summary of changes for version 20040827:
9806
9807 1) ACPI CA Core Subsystem:
9808
9809 - Implemented support for implicit object conversion in the non-numeric
9810 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
9811 and
9812 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
9813 the second operand is implicitly converted on the fly to match the type
9814 of
9815 the first operand. For example:
9816
9817 LEqual (Source1, Source2)
9818
9819 Source1 and Source2 must each evaluate to an integer, a string, or a
9820 buffer.
9821 The data type of Source1 dictates the required type of Source2. Source2
9822 is
9823 implicitly converted if necessary to match the type of Source1.
9824
9825 - Updated and corrected the behavior of the string conversion support.
9826 The
9827 rules concerning conversion of buffers to strings (according to the ACPI
9828 specification) are as follows:
9829
9830 ToDecimalString - explicit byte-wise conversion of buffer to string of
9831 decimal values (0-255) separated by commas. ToHexString - explicit byte-
9832 wise
9833 conversion of buffer to string of hex values (0-FF) separated by commas.
9834 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
9835 byte
9836 copy with no transform except NULL terminated. Any other implicit buffer-
9837 to-
9838 string conversion - byte-wise conversion of buffer to string of hex
9839 values
9840 (0-FF) separated by spaces.
9841
9842 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
9843
9844 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
9845 was
9846 one byte too short in the case of a node in the root scope. This could
9847 cause a fault during debug output.
9848
9849 - Code and Data Size: Current and previous core subsystem library sizes
9850 are
9851 shown below. These are the code and data sizes for the acpica.lib
9852 produced
9853 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9854 any ACPI driver or OSPM code. The debug version of the code includes the
9855 debug output trace mechanism and has a much larger code and data size.
9856 Note
9857 that these values will vary depending on the efficiency of the compiler
9858 and
9859 the compiler options used during generation.
9860
9861 Previous Release:
9862 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
9863 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
9864 Current Release:
9865 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
9866 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
9867
9868
9869 2) iASL Compiler/Disassembler:
9870
9871 - Fixed a Linux generation error.
9872
9873
9874 ----------------------------------------
9875 16 August 2004. Summary of changes for version 20040816:
9876
9877 1) ACPI CA Core Subsystem:
9878
9879 Designed and implemented support within the AML interpreter for the so-
9880 called "implicit return". This support returns the result of the last
9881 ASL
9882 operation within a control method, in the absence of an explicit Return()
9883 operator. A few machines depend on this behavior, even though it is not
9884 explicitly supported by the ASL language. It is optional support that
9885 can
9886 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
9887
9888 Removed support for the PCI_Config address space from the internal low
9889 level
9890 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
9891 support was not used internally, and would not work correctly anyway
9892 because
9893 the PCI bus number and segment number were not supported. There are
9894 separate interfaces for PCI configuration space access because of the
9895 unique
9896 interface.
9897
9898 Code and Data Size: Current and previous core subsystem library sizes are
9899 shown below. These are the code and data sizes for the acpica.lib
9900 produced
9901 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9902 any ACPI driver or OSPM code. The debug version of the code includes the
9903 debug output trace mechanism and has a much larger code and data size.
9904 Note
9905 that these values will vary depending on the efficiency of the compiler
9906 and
9907 the compiler options used during generation.
9908
9909 Previous Release:
9910 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
9911 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
9912 Current Release:
9913 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
9914 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
9915
9916
9917 2) iASL Compiler/Disassembler:
9918
9919 Fixed a problem where constants in ASL expressions at the root level (not
9920 within a control method) could be inadvertently truncated during code
9921 generation. This problem was introduced in the 20040715 release.
9922
9923
9924 ----------------------------------------
9925 15 July 2004. Summary of changes for version 20040715:
9926
9927 1) ACPI CA Core Subsystem:
9928
9929 Restructured the internal HW GPE interfaces to pass/track the current
9930 state
9931 of interrupts (enabled/disabled) in order to avoid possible deadlock and
9932 increase flexibility of the interfaces.
9933
9934 Implemented a "lexicographical compare" for String and Buffer objects
9935 within
9936 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
9937 -
9938 as per further clarification to the ACPI specification. Behavior is
9939 similar
9940 to C library "strcmp".
9941
9942 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
9943 external function. In the 32-bit non-debug case, the stack use has been
9944 reduced from 168 bytes to 32 bytes.
9945
9946 Deployed a new run-time configuration flag,
9947 AcpiGbl_EnableInterpreterSlack,
9948 whose purpose is to allow the AML interpreter to forgive certain bad AML
9949 constructs. Default setting is FALSE.
9950
9951 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
9952 IO
9953 support code. If enabled, it allows field access to go beyond the end of
9954 a
9955 region definition if the field is within the region length rounded up to
9956 the
9957 next access width boundary (a common coding error.)
9958
9959 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
9960 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
9961 these
9962 symbols are lowercased by the latest version of the AcpiSrc tool.
9963
9964 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
9965 rename "Register" to simply "Reg" to prevent certain compilers from
9966 complaining.
9967
9968 Code and Data Size: Current and previous core subsystem library sizes are
9969 shown below. These are the code and data sizes for the acpica.lib
9970 produced
9971 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9972 any ACPI driver or OSPM code. The debug version of the code includes the
9973 debug output trace mechanism and has a much larger code and data size.
9974 Note
9975 that these values will vary depending on the efficiency of the compiler
9976 and
9977 the compiler options used during generation.
9978
9979 Previous Release:
9980 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
9981 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
9982 Current Release:
9983 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
9984 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
9985
9986
9987 2) iASL Compiler/Disassembler:
9988
9989 Implemented full support for Package objects within the Case() operator.
9990 Note: The Break() operator is currently not supported within Case blocks
9991 (TermLists) as there is some question about backward compatibility with
9992 ACPI
9993 1.0 interpreters.
9994
9995
9996 Fixed a problem where complex terms were not supported properly within
9997 the
9998 Switch() operator.
9999
10000 Eliminated extraneous warning for compiler-emitted reserved names of the
10001 form "_T_x". (Used in Switch/Case operators.)
10002
10003 Eliminated optimization messages for "_T_x" objects and small constants
10004 within the DefinitionBlock operator.
10005
10006
10007 ----------------------------------------
10008 15 June 2004. Summary of changes for version 20040615:
10009
10010 1) ACPI CA Core Subsystem:
10011
10012 Implemented support for Buffer and String objects (as per ACPI 2.0) for
10013 the
10014 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
10015 LLessEqual.
10016
10017 All directory names in the entire source package are lower case, as they
10018 were in earlier releases.
10019
10020 Implemented "Disassemble" command in the AML debugger that will
10021 disassemble
10022 a single control method.
10023
10024 Code and Data Size: Current and previous core subsystem library sizes are
10025 shown below. These are the code and data sizes for the acpica.lib
10026 produced
10027 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10028 any ACPI driver or OSPM code. The debug version of the code includes the
10029 debug output trace mechanism and has a much larger code and data size.
10030 Note
10031 that these values will vary depending on the efficiency of the compiler
10032 and
10033 the compiler options used during generation.
10034
10035 Previous Release:
10036 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
10037 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
10038
10039 Current Release:
10040 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10041 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
10042
10043
10044 2) iASL Compiler/Disassembler:
10045
10046 Implemented support for Buffer and String objects (as per ACPI 2.0) for
10047 the
10048 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
10049 LLessEqual.
10050
10051 All directory names in the entire source package are lower case, as they
10052 were in earlier releases.
10053
10054 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
10055 not found.
10056
10057 Fixed an issue with the Windows version of the compiler where later
10058 versions
10059 of Windows place the FADT in the registry under the name "FADT" and not
10060 "FACP" as earlier versions did. This applies when using the -g or -
10061 d<nofilename> options. The compiler now looks for both strings as
10062 necessary.
10063
10064 Fixed a problem with compiler namepath optimization where a namepath
10065 within
10066 the Scope() operator could not be optimized if the namepath was a subpath
10067 of
10068 the current scope path.
10069
10070 ----------------------------------------
10071 27 May 2004. Summary of changes for version 20040527:
10072
10073 1) ACPI CA Core Subsystem:
10074
10075 Completed a new design and implementation for EBDA (Extended BIOS Data
10076 Area)
10077 support in the RSDP scan code. The original code improperly scanned for
10078 the
10079 EBDA by simply scanning from memory location 0 to 0x400. The correct
10080 method
10081 is to first obtain the EBDA pointer from within the BIOS data area, then
10082 scan 1K of memory starting at the EBDA pointer. There appear to be few
10083 if
10084 any machines that place the RSDP in the EBDA, however.
10085
10086 Integrated a fix for a possible fault during evaluation of BufferField
10087 arguments. Obsolete code that was causing the problem was removed.
10088
10089 Found and fixed a problem in the Field Support Code where data could be
10090 corrupted on a bit field read that starts on an aligned boundary but does
10091 not end on an aligned boundary. Merged the read/write "datum length"
10092 calculation code into a common procedure.
10093
10094 Rolled in a couple of changes to the FreeBSD-specific header.
10095
10096
10097 Code and Data Size: Current and previous core subsystem library sizes are
10098 shown below. These are the code and data sizes for the acpica.lib
10099 produced
10100 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10101 any ACPI driver or OSPM code. The debug version of the code includes the
10102 debug output trace mechanism and has a much larger code and data size.
10103 Note
10104 that these values will vary depending on the efficiency of the compiler
10105 and
10106 the compiler options used during generation.
10107
10108 Previous Release:
10109 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10110 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
10111 Current Release:
10112 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
10113 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
10114
10115
10116 2) iASL Compiler/Disassembler:
10117
10118 Fixed a generation warning produced by some overly-verbose compilers for
10119 a
10120 64-bit constant.
10121
10122 ----------------------------------------
10123 14 May 2004. Summary of changes for version 20040514:
10124
10125 1) ACPI CA Core Subsystem:
10126
10127 Fixed a problem where hardware GPE enable bits sometimes not set properly
10128 during and after GPE method execution. Result of 04/27 changes.
10129
10130 Removed extra "clear all GPEs" when sleeping/waking.
10131
10132 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
10133 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
10134 to
10135 the new AcpiEv* calls as appropriate.
10136
10137 ACPI_OS_NAME was removed from the OS-specific headers. The default name
10138 is
10139 now "Microsoft Windows NT" for maximum compatibility. However this can
10140 be
10141 changed by modifying the acconfig.h file.
10142
10143 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
10144 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
10145
10146 Run _INI methods on ThermalZone objects. This is against the ACPI
10147 specification, but there is apparently ASL code in the field that has
10148 these
10149 _INI methods, and apparently "other" AML interpreters execute them.
10150
10151 Performed a full 16/32/64 bit lint that resulted in some small changes.
10152
10153 Added a sleep simulation command to the AML debugger to test sleep code.
10154
10155 Code and Data Size: Current and previous core subsystem library sizes are
10156 shown below. These are the code and data sizes for the acpica.lib
10157 produced
10158 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10159 any ACPI driver or OSPM code. The debug version of the code includes the
10160 debug output trace mechanism and has a much larger code and data size.
10161 Note
10162 that these values will vary depending on the efficiency of the compiler
10163 and
10164 the compiler options used during generation.
10165
10166 Previous Release:
10167 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10168 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
10169 Current Release:
10170 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10171 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
10172
10173 ----------------------------------------
10174 27 April 2004. Summary of changes for version 20040427:
10175
10176 1) ACPI CA Core Subsystem:
10177
10178 Completed a major overhaul of the GPE handling within ACPI CA. There are
10179 now three types of GPEs: wake-only, runtime-only, and combination
10180 wake/run.
10181 The only GPEs allowed to be combination wake/run are for button-style
10182 devices such as a control-method power button, control-method sleep
10183 button,
10184 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
10185 not
10186 referenced by any _PRW methods are marked for "runtime" and hardware
10187 enabled. Any GPE that is referenced by a _PRW method is marked for
10188 "wake"
10189 (and disabled at runtime). However, at sleep time, only those GPEs that
10190 have been specifically enabled for wake via the AcpiEnableGpe interface
10191 will
10192 actually be hardware enabled.
10193
10194 A new external interface has been added, AcpiSetGpeType(), that is meant
10195 to
10196 be used by device drivers to force a GPE to a particular type. It will
10197 be
10198 especially useful for the drivers for the button devices mentioned above.
10199
10200 Completed restructuring of the ACPI CA initialization sequence so that
10201 default operation region handlers are installed before GPEs are
10202 initialized
10203 and the _PRW methods are executed. This will prevent errors when the
10204 _PRW
10205 methods attempt to access system memory or I/O space.
10206
10207 GPE enable/disable no longer reads the GPE enable register. We now keep
10208 the
10209 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
10210 thus no longer depend on the hardware to maintain these bits.
10211
10212 Always clear the wake status and fixed/GPE status bits before sleep, even
10213 for state S5.
10214
10215 Improved the AML debugger output for displaying the GPE blocks and their
10216 current status.
10217
10218 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
10219 where
10220 x = 0,1,2,3,4.
10221
10222 Fixed a problem where the physical address was incorrectly calculated
10223 when
10224 the Load() operator was used to directly load from an Operation Region
10225 (vs.
10226 loading from a Field object.) Also added check for minimum table length
10227 for
10228 this case.
10229
10230 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
10231 mutex release.
10232
10233 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
10234 consistency with the other fields returned.
10235
10236 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
10237 structure for each GPE in the system, so the size of this structure is
10238 important.
10239
10240 CPU stack requirement reduction: Cleaned up the method execution and
10241 object
10242 evaluation paths so that now a parameter structure is passed, instead of
10243 copying the various method parameters over and over again.
10244
10245 In evregion.c: Correctly exit and reenter the interpreter region if and
10246 only if dispatching an operation region request to a user-installed
10247 handler.
10248 Do not exit/reenter when dispatching to a default handler (e.g., default
10249 system memory or I/O handlers)
10250
10251
10252 Notes for updating drivers for the new GPE support. The following
10253 changes
10254 must be made to ACPI-related device drivers that are attached to one or
10255 more
10256 GPEs: (This information will be added to the ACPI CA Programmer
10257 Reference.)
10258
10259 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
10260 must
10261 explicitly call AcpiEnableGpe.
10262 2) There is a new interface called AcpiSetGpeType. This should be called
10263 before enabling the GPE. Also, this interface will automatically disable
10264 the GPE if it is currently enabled.
10265 3) AcpiEnableGpe no longer supports a GPE type flag.
10266
10267 Specific drivers that must be changed:
10268 1) EC driver:
10269 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
10270 AeGpeHandler, NULL);
10271 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
10272 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
10273
10274 2) Button Drivers (Power, Lid, Sleep):
10275 Run _PRW method under parent device
10276 If _PRW exists: /* This is a control-method button */
10277 Extract GPE number and possibly GpeDevice
10278 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
10279 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
10280
10281 For all other devices that have _PRWs, we automatically set the GPE type
10282 to
10283 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
10284 This
10285 must be done on a selective basis, usually requiring some kind of user
10286 app
10287 to allow the user to pick the wake devices.
10288
10289
10290 Code and Data Size: Current and previous core subsystem library sizes are
10291 shown below. These are the code and data sizes for the acpica.lib
10292 produced
10293 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10294 any ACPI driver or OSPM code. The debug version of the code includes the
10295 debug output trace mechanism and has a much larger code and data size.
10296 Note
10297 that these values will vary depending on the efficiency of the compiler
10298 and
10299 the compiler options used during generation.
10300
10301 Previous Release:
10302 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
10303 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
10304 Current Release:
10305
10306 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10307 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
10308
10309
10310
10311 ----------------------------------------
10312 02 April 2004. Summary of changes for version 20040402:
10313
10314 1) ACPI CA Core Subsystem:
10315
10316 Fixed an interpreter problem where an indirect store through an ArgX
10317 parameter was incorrectly applying the "implicit conversion rules" during
10318 the store. From the ACPI specification: "If the target is a method local
10319 or
10320 argument (LocalX or ArgX), no conversion is performed and the result is
10321 stored directly to the target". The new behavior is to disable implicit
10322 conversion during ALL stores to an ArgX.
10323
10324 Changed the behavior of the _PRW method scan to ignore any and all errors
10325 returned by a given _PRW. This prevents the scan from aborting from the
10326 failure of any single _PRW.
10327
10328 Moved the runtime configuration parameters from the global init procedure
10329 to
10330 static variables in acglobal.h. This will allow the host to override the
10331 default values easily.
10332
10333 Code and Data Size: Current and previous core subsystem library sizes are
10334 shown below. These are the code and data sizes for the acpica.lib
10335 produced
10336 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10337 any ACPI driver or OSPM code. The debug version of the code includes the
10338 debug output trace mechanism and has a much larger code and data size.
10339 Note
10340 that these values will vary depending on the efficiency of the compiler
10341 and
10342 the compiler options used during generation.
10343
10344 Previous Release:
10345 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
10346 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
10347 Current Release:
10348 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
10349 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
10350
10351
10352 2) iASL Compiler/Disassembler:
10353
10354 iASL now fully disassembles SSDTs. However, External() statements are
10355 not
10356 generated automatically for unresolved symbols at this time. This is a
10357 planned feature for future implementation.
10358
10359 Fixed a scoping problem in the disassembler that occurs when the type of
10360 the
10361 target of a Scope() operator is overridden. This problem caused an
10362 incorrectly nested internal namespace to be constructed.
10363
10364 Any warnings or errors that are emitted during disassembly are now
10365 commented
10366 out automatically so that the resulting file can be recompiled without
10367 any
10368 hand editing.
10369
10370 ----------------------------------------
10371 26 March 2004. Summary of changes for version 20040326:
10372
10373 1) ACPI CA Core Subsystem:
10374
10375 Implemented support for "wake" GPEs via interaction between GPEs and the
10376 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
10377 identified as a WAKE GPE and by default will no longer be enabled at
10378 runtime. Previously, we were blindly enabling all GPEs with a
10379 corresponding
10380 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
10381 We
10382 believe this has been the cause of thousands of "spurious" GPEs on some
10383 systems.
10384
10385 This new GPE behavior is can be reverted to the original behavior (enable
10386 ALL GPEs at runtime) via a runtime flag.
10387
10388 Fixed a problem where aliased control methods could not access objects
10389 properly. The proper scope within the namespace was not initialized
10390 (transferred to the target of the aliased method) before executing the
10391 target method.
10392
10393 Fixed a potential race condition on internal object deletion on the
10394 return
10395 object in AcpiEvaluateObject.
10396
10397 Integrated a fix for resource descriptors where both _MEM and _MTP were
10398 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
10399 wide, 0x0F instead of 0x03.)
10400
10401 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
10402 preventing
10403 a
10404 fault in some cases.
10405
10406 Updated Notify() values for debug statements in evmisc.c
10407
10408 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
10409
10410 Code and Data Size: Current and previous core subsystem library sizes are
10411 shown below. These are the code and data sizes for the acpica.lib
10412 produced
10413 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10414 any ACPI driver or OSPM code. The debug version of the code includes the
10415 debug output trace mechanism and has a much larger code and data size.
10416 Note
10417 that these values will vary depending on the efficiency of the compiler
10418 and
10419 the compiler options used during generation.
10420
10421 Previous Release:
10422
10423 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
10424 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
10425 Current Release:
10426 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
10427 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
10428
10429 ----------------------------------------
10430 11 March 2004. Summary of changes for version 20040311:
10431
10432 1) ACPI CA Core Subsystem:
10433
10434 Fixed a problem where errors occurring during the parse phase of control
10435 method execution did not abort cleanly. For example, objects created and
10436 installed in the namespace were not deleted. This caused all subsequent
10437 invocations of the method to return the AE_ALREADY_EXISTS exception.
10438
10439 Implemented a mechanism to force a control method to "Serialized"
10440 execution
10441 if the method attempts to create namespace objects. (The root of the
10442 AE_ALREADY_EXISTS problem.)
10443
10444 Implemented support for the predefined _OSI "internal" control method.
10445 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
10446 and
10447 "Windows 2001.1", and can be easily upgraded for new strings as
10448 necessary.
10449 This feature will allow "other" operating systems to execute the fully
10450 tested, "Windows" code path through the ASL code
10451
10452 Global Lock Support: Now allows multiple acquires and releases with any
10453 internal thread. Removed concept of "owning thread" for this special
10454 mutex.
10455
10456 Fixed two functions that were inappropriately declaring large objects on
10457 the
10458 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
10459 during
10460 method execution considerably.
10461
10462 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
10463 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
10464
10465 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
10466 defined on the machine.
10467
10468 Implemented two runtime options: One to force all control method
10469 execution
10470 to "Serialized" to mimic Windows behavior, another to disable _OSI
10471 support
10472 if it causes problems on a given machine.
10473
10474 Code and Data Size: Current and previous core subsystem library sizes are
10475 shown below. These are the code and data sizes for the acpica.lib
10476 produced
10477 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10478 any ACPI driver or OSPM code. The debug version of the code includes the
10479 debug output trace mechanism and has a much larger code and data size.
10480 Note
10481 that these values will vary depending on the efficiency of the compiler
10482 and
10483 the compiler options used during generation.
10484
10485 Previous Release:
10486 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
10487 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
10488 Current Release:
10489 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
10490 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
10491
10492 2) iASL Compiler/Disassembler:
10493
10494 Fixed an array size problem for FreeBSD that would cause the compiler to
10495 fault.
10496
10497 ----------------------------------------
10498 20 February 2004. Summary of changes for version 20040220:
10499
10500
10501 1) ACPI CA Core Subsystem:
10502
10503 Implemented execution of _SxD methods for Device objects in the
10504 GetObjectInfo interface.
10505
10506 Fixed calls to _SST method to pass the correct arguments.
10507
10508 Added a call to _SST on wake to restore to "working" state.
10509
10510 Check for End-Of-Buffer failure case in the WalkResources interface.
10511
10512 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
10513 structures to the beginning of the file.
10514
10515 After wake, clear GPE status register(s) before enabling GPEs.
10516
10517 After wake, clear/enable power button. (Perhaps we should clear/enable
10518 all
10519 fixed events upon wake.)
10520
10521 Fixed a couple of possible memory leaks in the Namespace manager.
10522
10523 Integrated latest acnetbsd.h file.
10524
10525 ----------------------------------------
10526 11 February 2004. Summary of changes for version 20040211:
10527
10528
10529 1) ACPI CA Core Subsystem:
10530
10531 Completed investigation and implementation of the call-by-reference
10532 mechanism for control method arguments.
10533
10534 Fixed a problem where a store of an object into an indexed package could
10535 fail if the store occurs within a different method than the method that
10536 created the package.
10537
10538 Fixed a problem where the ToDecimal operator could return incorrect
10539 results.
10540
10541 Fixed a problem where the CopyObject operator could fail on some of the
10542 more
10543 obscure objects (e.g., Reference objects.)
10544
10545 Improved the output of the Debug object to display buffer, package, and
10546 index objects.
10547
10548 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
10549 return
10550 the expected result.
10551
10552 Added permanent ACPI_REPORT_ERROR macros for all instances of the
10553 ACPI_AML_INTERNAL exception.
10554
10555 Integrated latest version of acfreebsd.h
10556
10557 ----------------------------------------
10558 16 January 2004. Summary of changes for version 20040116:
10559
10560 The purpose of this release is primarily to update the copyright years in
10561 each module, thus causing a huge number of diffs. There are a few small
10562 functional changes, however.
10563
10564 1) ACPI CA Core Subsystem:
10565
10566 Improved error messages when there is a problem finding one or more of
10567 the
10568 required base ACPI tables
10569
10570 Reintroduced the definition of APIC_HEADER in actbl.h
10571
10572 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
10573
10574 Removed extraneous reference to NewObj in dsmthdat.c
10575
10576 2) iASL compiler
10577
10578 Fixed a problem introduced in December that disabled the correct
10579 disassembly
10580 of Resource Templates
10581
10582
10583 ----------------------------------------
10584 03 December 2003. Summary of changes for version 20031203:
10585
10586 1) ACPI CA Core Subsystem:
10587
10588 Changed the initialization of Operation Regions during subsystem
10589 init to perform two entire walks of the ACPI namespace; The first
10590 to initialize the regions themselves, the second to execute the
10591 _REG methods. This fixed some interdependencies across _REG
10592 methods found on some machines.
10593
10594 Fixed a problem where a Store(Local0, Local1) could simply update
10595 the object reference count, and not create a new copy of the
10596 object if the Local1 is uninitialized.
10597
10598 Implemented support for the _SST reserved method during sleep
10599 transitions.
10600
10601 Implemented support to clear the SLP_TYP and SLP_EN bits when
10602 waking up, this is apparently required by some machines.
10603
10604 When sleeping, clear the wake status only if SleepState is not S5.
10605
10606 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
10607 pointer arithmetic advanced a string pointer too far.
10608
10609 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
10610 could be returned if the requested table has not been loaded.
10611
10612 Within the support for IRQ resources, restructured the handling of
10613 the active and edge/level bits.
10614
10615 Fixed a few problems in AcpiPsxExecute() where memory could be
10616 leaked under certain error conditions.
10617
10618 Improved error messages for the cases where the ACPI mode could
10619 not be entered.
10620
10621 Code and Data Size: Current and previous core subsystem library
10622 sizes are shown below. These are the code and data sizes for the
10623 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
10624 these values do not include any ACPI driver or OSPM code. The
10625 debug version of the code includes the debug output trace
10626 mechanism and has a much larger code and data size. Note that
10627 these values will vary depending on the efficiency of the compiler
10628 and the compiler options used during generation.
10629
10630 Previous Release (20031029):
10631 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
10632 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
10633 Current Release:
10634 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
10635 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
10636
10637 2) iASL Compiler/Disassembler:
10638
10639 Implemented a fix for the iASL disassembler where a bad index was
10640 generated. This was most noticeable on 64-bit platforms
10641
10642
10643 ----------------------------------------
10644 29 October 2003. Summary of changes for version 20031029:
10645
10646 1) ACPI CA Core Subsystem:
10647
10648
10649 Fixed a problem where a level-triggered GPE with an associated
10650 _Lxx control method was incorrectly cleared twice.
10651
10652 Fixed a problem with the Field support code where an access can
10653 occur beyond the end-of-region if the field is non-aligned but
10654 extends to the very end of the parent region (resulted in an
10655 AE_AML_REGION_LIMIT exception.)
10656
10657 Fixed a problem with ACPI Fixed Events where an RT Clock handler
10658 would not get invoked on an RTC event. The RTC event bitmasks for
10659 the PM1 registers were not being initialized properly.
10660
10661 Implemented support for executing _STA and _INI methods for
10662 Processor objects. Although this is currently not part of the
10663 ACPI specification, there is existing ASL code that depends on the
10664 init-time execution of these methods.
10665
10666 Implemented and deployed a GetDescriptorName function to decode
10667 the various types of internal descriptors. Guards against null
10668 descriptors during debug output also.
10669
10670 Implemented and deployed a GetNodeName function to extract the 4-
10671 character namespace node name. This function simplifies the debug
10672 and error output, as well as guarding against null pointers during
10673 output.
10674
10675 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
10676 simplify the debug and error output of 64-bit integers. This
10677 macro replaces the HIDWORD and LODWORD macros for dumping these
10678 integers.
10679
10680 Updated the implementation of the Stall() operator to only call
10681 AcpiOsStall(), and also return an error if the operand is larger
10682 than 255. This preserves the required behavior of not
10683 relinquishing the processor, as would happen if AcpiOsSleep() was
10684 called for "long stalls".
10685
10686 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
10687 initialized are now treated as NOOPs.
10688
10689 Cleaned up a handful of warnings during 64-bit generation.
10690
10691 Fixed a reported error where and incorrect GPE number was passed
10692 to the GPE dispatch handler. This value is only used for error
10693 output, however. Used this opportunity to clean up and streamline
10694 the GPE dispatch code.
10695
10696 Code and Data Size: Current and previous core subsystem library
10697 sizes are shown below. These are the code and data sizes for the
10698 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
10699 these values do not include any ACPI driver or OSPM code. The
10700
10701 debug version of the code includes the debug output trace
10702 mechanism and has a much larger code and data size. Note that
10703 these values will vary depending on the efficiency of the compiler
10704 and the compiler options used during generation.
10705
10706 Previous Release (20031002):
10707 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
10708 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
10709 Current Release:
10710 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
10711 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
10712
10713
10714 2) iASL Compiler/Disassembler:
10715
10716 Updated the iASL compiler to return an error if the operand to the
10717 Stall() operator is larger than 255.
10718
10719
10720 ----------------------------------------
10721 02 October 2003. Summary of changes for version 20031002:
10722
10723
10724 1) ACPI CA Core Subsystem:
10725
10726 Fixed a problem with Index Fields where the index was not
10727 incremented for fields that require multiple writes to the
10728 index/data registers (Fields that are wider than the data
10729 register.)
10730
10731 Fixed a problem with all Field objects where a write could go
10732 beyond the end-of-field if the field was larger than the access
10733 granularity and therefore required multiple writes to complete the
10734 request. An extra write beyond the end of the field could happen
10735 inadvertently.
10736
10737 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
10738 would incorrectly be returned if the width of the Data Register
10739 was larger than the specified field access width.
10740
10741 Completed fixes for LoadTable() and Unload() and verified their
10742 operation. Implemented full support for the "DdbHandle" object
10743 throughout the ACPI CA subsystem.
10744
10745 Implemented full support for the MADT and ECDT tables in the ACPI
10746 CA header files. Even though these tables are not directly
10747 consumed by ACPI CA, the header definitions are useful for ACPI
10748 device drivers.
10749
10750 Integrated resource descriptor fixes posted to the Linux ACPI
10751 list. This included checks for minimum descriptor length, and
10752 support for trailing NULL strings within descriptors that have
10753 optional string elements.
10754
10755 Code and Data Size: Current and previous core subsystem library
10756 sizes are shown below. These are the code and data sizes for the
10757 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
10758 these values do not include any ACPI driver or OSPM code. The
10759 debug version of the code includes the debug output trace
10760 mechanism and has a much larger code and data size. Note that
10761 these values will vary depending on the efficiency of the compiler
10762 and the compiler options used during generation.
10763
10764 Previous Release (20030918):
10765 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
10766 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
10767 Current Release:
10768 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
10769 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
10770
10771
10772 2) iASL Compiler:
10773
10774 Implemented detection of non-ASCII characters within the input
10775 source ASL file. This catches attempts to compile binary (AML)
10776 files early in the compile, with an informative error message.
10777
10778 Fixed a problem where the disassembler would fault if the output
10779 filename could not be generated or if the output file could not be
10780 opened.
10781
10782 ----------------------------------------
10783 18 September 2003. Summary of changes for version 20030918:
10784
10785
10786 1) ACPI CA Core Subsystem:
10787
10788 Found and fixed a longstanding problem with the late execution of
10789 the various deferred AML opcodes (such as Operation Regions,
10790 Buffer Fields, Buffers, and Packages). If the name string
10791 specified for the name of the new object placed the object in a
10792 scope other than the current scope, the initialization/execution
10793 of the opcode failed. The solution to this problem was to
10794 implement a mechanism where the late execution of such opcodes
10795 does not attempt to lookup/create the name a second time in an
10796 incorrect scope. This fixes the "region size computed
10797 incorrectly" problem.
10798
10799 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
10800 Global Lock AE_BAD_PARAMETER error.
10801
10802 Fixed several 64-bit issues with prototypes, casting and data
10803 types.
10804
10805 Removed duplicate prototype from acdisasm.h
10806
10807 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
10808
10809 Code and Data Size: Current and previous core subsystem library
10810 sizes are shown below. These are the code and data sizes for the
10811 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
10812 these values do not include any ACPI driver or OSPM code. The
10813 debug version of the code includes the debug output trace
10814 mechanism and has a much larger code and data size. Note that
10815 these values will vary depending on the efficiency of the compiler
10816 and the compiler options used during generation.
10817
10818 Previous Release:
10819
10820 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
10821 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
10822 Current Release:
10823 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
10824 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
10825
10826
10827 2) Linux:
10828
10829 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
10830 correct sleep time in seconds.
10831
10832 ----------------------------------------
10833 14 July 2003. Summary of changes for version 20030619:
10834
10835 1) ACPI CA Core Subsystem:
10836
10837 Parse SSDTs in order discovered, as opposed to reverse order
10838 (Hrvoje Habjanic)
10839
10840 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
10841 Klausner,
10842 Nate Lawson)
10843
10844
10845 2) Linux:
10846
10847 Dynamically allocate SDT list (suggested by Andi Kleen)
10848
10849 proc function return value cleanups (Andi Kleen)
10850
10851 Correctly handle NMI watchdog during long stalls (Andrew Morton)
10852
10853 Make it so acpismp=force works (reported by Andrew Morton)
10854
10855
10856 ----------------------------------------
10857 19 June 2003. Summary of changes for version 20030619:
10858
10859 1) ACPI CA Core Subsystem:
10860
10861 Fix To/FromBCD, eliminating the need for an arch-specific #define.
10862
10863 Do not acquire a semaphore in the S5 shutdown path.
10864
10865 Fix ex_digits_needed for 0. (Takayoshi Kochi)
10866
10867 Fix sleep/stall code reversal. (Andi Kleen)
10868
10869 Revert a change having to do with control method calling
10870 semantics.
10871
10872 2) Linux:
10873
10874 acpiphp update (Takayoshi Kochi)
10875
10876 Export acpi_disabled for sonypi (Stelian Pop)
10877
10878 Mention acpismp=force in config help
10879
10880 Re-add acpitable.c and acpismp=force. This improves backwards
10881
10882 compatibility and also cleans up the code to a significant degree.
10883
10884 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
10885
10886 ----------------------------------------
10887 22 May 2003. Summary of changes for version 20030522:
10888
10889 1) ACPI CA Core Subsystem:
10890
10891 Found and fixed a reported problem where an AE_NOT_FOUND error
10892 occurred occasionally during _BST evaluation. This turned out to
10893 be an Owner ID allocation issue where a called method did not get
10894 a new ID assigned to it. Eventually, (after 64k calls), the Owner
10895 ID UINT16 would wraparound so that the ID would be the same as the
10896 caller's and the called method would delete the caller's
10897 namespace.
10898
10899 Implemented extended error reporting for control methods that are
10900 aborted due to a run-time exception. Output includes the exact
10901 AML instruction that caused the method abort, a dump of the method
10902 locals and arguments at the time of the abort, and a trace of all
10903 nested control method calls.
10904
10905 Modified the interpreter to allow the creation of buffers of zero
10906 length from the AML code. Implemented new code to ensure that no
10907 attempt is made to actually allocate a memory buffer (of length
10908 zero) - instead, a simple buffer object with a NULL buffer pointer
10909 and length zero is created. A warning is no longer issued when
10910 the AML attempts to create a zero-length buffer.
10911
10912 Implemented a workaround for the "leading asterisk issue" in
10913 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
10914 asterisk is automatically removed if present in any HID, UID, or
10915 CID strings. The iASL compiler will still flag this asterisk as
10916 an error, however.
10917
10918 Implemented full support for _CID methods that return a package of
10919 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
10920 now additionally returns a device _CID list if present. This
10921 required a change to the external interface in order to pass an
10922 ACPI_BUFFER object as a parameter since the _CID list is of
10923 variable length.
10924
10925 Fixed a problem with the new AE_SAME_HANDLER exception where
10926 handler initialization code did not know about this exception.
10927
10928 Code and Data Size: Current and previous core subsystem library
10929 sizes are shown below. These are the code and data sizes for the
10930 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
10931 these values do not include any ACPI driver or OSPM code. The
10932 debug version of the code includes the debug output trace
10933 mechanism and has a much larger code and data size. Note that
10934 these values will vary depending on the efficiency of the compiler
10935 and the compiler options used during generation.
10936
10937 Previous Release (20030509):
10938 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
10939 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
10940 Current Release:
10941 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
10942 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
10943
10944
10945 2) Linux:
10946
10947 Fixed a bug in which we would reinitialize the ACPI interrupt
10948 after it was already working, thus disabling all ACPI and the IRQs
10949 for any other device sharing the interrupt. (Thanks to Stian
10950 Jordet)
10951
10952 Toshiba driver update (John Belmonte)
10953
10954 Return only 0 or 1 for our interrupt handler status (Andrew
10955 Morton)
10956
10957
10958 3) iASL Compiler:
10959
10960 Fixed a reported problem where multiple (nested) ElseIf()
10961 statements were not handled correctly by the compiler, resulting
10962 in incorrect warnings and incorrect AML code. This was a problem
10963 in both the ASL parser and the code generator.
10964
10965
10966 4) Documentation:
10967
10968 Added changes to existing interfaces, new exception codes, and new
10969 text concerning reference count object management versus garbage
10970 collection.
10971
10972 ----------------------------------------
10973 09 May 2003. Summary of changes for version 20030509.
10974
10975
10976 1) ACPI CA Core Subsystem:
10977
10978 Changed the subsystem initialization sequence to hold off
10979 installation of address space handlers until the hardware has been
10980 initialized and the system has entered ACPI mode. This is because
10981 the installation of space handlers can cause _REG methods to be
10982 run. Previously, the _REG methods could potentially be run before
10983 ACPI mode was enabled.
10984
10985 Fixed some memory leak issues related to address space handler and
10986 notify handler installation. There were some problems with the
10987 reference count mechanism caused by the fact that the handler
10988 objects are shared across several namespace objects.
10989
10990 Fixed a reported problem where reference counts within the
10991 namespace were not properly updated when named objects created by
10992 method execution were deleted.
10993
10994 Fixed a reported problem where multiple SSDTs caused a deletion
10995 issue during subsystem termination. Restructured the table data
10996 structures to simplify the linked lists and the related code.
10997
10998 Fixed a problem where the table ID associated with secondary
10999 tables (SSDTs) was not being propagated into the namespace objects
11000 created by those tables. This would only present a problem for
11001 tables that are unloaded at run-time, however.
11002
11003 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
11004 type as the length parameter (instead of UINT32).
11005
11006 Solved a long-standing problem where an ALREADY_EXISTS error
11007 appears on various systems. This problem could happen when there
11008 are multiple PCI_Config operation regions under a single PCI root
11009 bus. This doesn't happen very frequently, but there are some
11010 systems that do this in the ASL.
11011
11012 Fixed a reported problem where the internal DeleteNode function
11013 was incorrectly handling the case where a namespace node was the
11014 first in the parent's child list, and had additional peers (not
11015 the only child, but first in the list of children.)
11016
11017 Code and Data Size: Current core subsystem library sizes are shown
11018 below. These are the code and data sizes for the acpica.lib
11019 produced by the Microsoft Visual C++ 6.0 compiler, and these
11020 values do not include any ACPI driver or OSPM code. The debug
11021 version of the code includes the debug output trace mechanism and
11022 has a much larger code and data size. Note that these values will
11023 vary depending on the efficiency of the compiler and the compiler
11024 options used during generation.
11025
11026 Previous Release
11027 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
11028 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
11029 Current Release:
11030 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
11031 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
11032
11033
11034 2) Linux:
11035
11036 Allow ":" in OS override string (Ducrot Bruno)
11037
11038 Kobject fix (Greg KH)
11039
11040
11041 3 iASL Compiler/Disassembler:
11042
11043 Fixed a problem in the generation of the C source code files (AML
11044 is emitted in C source statements for BIOS inclusion) where the
11045 Ascii dump that appears within a C comment at the end of each line
11046 could cause a compile time error if the AML sequence happens to
11047 have an open comment or close comment sequence embedded.
11048
11049
11050 ----------------------------------------
11051 24 April 2003. Summary of changes for version 20030424.
11052
11053
11054 1) ACPI CA Core Subsystem:
11055
11056 Support for big-endian systems has been implemented. Most of the
11057 support has been invisibly added behind big-endian versions of the
11058 ACPI_MOVE_* macros.
11059
11060 Fixed a problem in AcpiHwDisableGpeBlock() and
11061 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
11062 low level hardware write routine. The offset parameter was
11063 actually eliminated from the low level read/write routines because
11064 they had become obsolete.
11065
11066 Fixed a problem where a handler object was deleted twice during
11067 the removal of a fixed event handler.
11068
11069
11070 2) Linux:
11071
11072 A fix for SMP systems with link devices was contributed by
11073
11074 Compaq's Dan Zink.
11075
11076 (2.5) Return whether we handled the interrupt in our IRQ handler.
11077 (Linux ISRs no longer return void, so we can propagate the handler
11078 return value from the ACPI CA core back to the OS.)
11079
11080
11081
11082 3) Documentation:
11083
11084 The ACPI CA Programmer Reference has been updated to reflect new
11085 interfaces and changes to existing interfaces.
11086
11087 ----------------------------------------
11088 28 March 2003. Summary of changes for version 20030328.
11089
11090 1) ACPI CA Core Subsystem:
11091
11092 The GPE Block Device support has been completed. New interfaces
11093 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
11094 interfaces (enable, disable, clear, getstatus) have been split
11095 into separate interfaces for Fixed Events and General Purpose
11096 Events (GPEs) in order to support GPE Block Devices properly.
11097
11098 Fixed a problem where the error message "Failed to acquire
11099 semaphore" would appear during operations on the embedded
11100 controller (EC).
11101
11102 Code and Data Size: Current core subsystem library sizes are shown
11103 below. These are the code and data sizes for the acpica.lib
11104 produced by the Microsoft Visual C++ 6.0 compiler, and these
11105 values do not include any ACPI driver or OSPM code. The debug
11106 version of the code includes the debug output trace mechanism and
11107 has a much larger code and data size. Note that these values will
11108 vary depending on the efficiency of the compiler and the compiler
11109 options used during generation.
11110
11111 Previous Release
11112 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
11113 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
11114 Current Release:
11115 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
11116 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
11117
11118
11119 ----------------------------------------
11120 28 February 2003. Summary of changes for version 20030228.
11121
11122
11123 1) ACPI CA Core Subsystem:
11124
11125 The GPE handling and dispatch code has been completely overhauled
11126 in preparation for support of GPE Block Devices (ID ACPI0006).
11127 This affects internal data structures and code only; there should
11128 be no differences visible externally. One new file has been
11129 added, evgpeblk.c
11130
11131 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
11132 fields that are used to determine the GPE block lengths. The
11133 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
11134 structures are ignored. This is per the ACPI specification but it
11135 isn't very clear. The full 256 Block 0/1 GPEs are now supported
11136 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
11137
11138 In the SCI interrupt handler, removed the read of the PM1_CONTROL
11139 register to look at the SCI_EN bit. On some machines, this read
11140 causes an SMI event and greatly slows down SCI events. (This may
11141 in fact be the cause of slow battery status response on some
11142 systems.)
11143
11144 Fixed a problem where a store of a NULL string to a package object
11145 could cause the premature deletion of the object. This was seen
11146 during execution of the battery _BIF method on some systems,
11147 resulting in no battery data being returned.
11148
11149 Added AcpiWalkResources interface to simplify parsing of resource
11150 lists.
11151
11152 Code and Data Size: Current core subsystem library sizes are shown
11153 below. These are the code and data sizes for the acpica.lib
11154 produced by the Microsoft Visual C++ 6.0 compiler, and these
11155 values do not include any ACPI driver or OSPM code. The debug
11156 version of the code includes the debug output trace mechanism and
11157 has a much larger code and data size. Note that these values will
11158 vary depending on the efficiency of the compiler and the compiler
11159 options used during generation.
11160
11161 Previous Release
11162 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11163 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11164 Current Release:
11165 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
11166 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
11167
11168
11169 2) Linux
11170
11171 S3 fixes (Ole Rohne)
11172
11173 Update ACPI PHP driver with to use new acpi_walk_resource API
11174 (Bjorn Helgaas)
11175
11176 Add S4BIOS support (Pavel Machek)
11177
11178 Map in entire table before performing checksum (John Stultz)
11179
11180 Expand the mem= cmdline to allow the specification of reserved and
11181 ACPI DATA blocks (Pavel Machek)
11182
11183 Never use ACPI on VISWS
11184
11185 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
11186
11187 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
11188 causing us to think that some systems support C2 when they really
11189 don't.
11190
11191 Do not count processor objects for non-present CPUs (Thanks to
11192 Dominik Brodowski)
11193
11194
11195 3) iASL Compiler:
11196
11197 Fixed a problem where ASL include files could not be found and
11198 opened.
11199
11200 Added support for the _PDC reserved name.
11201
11202
11203 ----------------------------------------
11204 22 January 2003. Summary of changes for version 20030122.
11205
11206
11207 1) ACPI CA Core Subsystem:
11208
11209 Added a check for constructs of the form: Store (Local0, Local0)
11210 where Local0 is not initialized. Apparently, some BIOS
11211 programmers believe that this is a NOOP. Since this store doesn't
11212 do anything anyway, the new prototype behavior will ignore this
11213 error. This is a case where we can relax the strict checking in
11214 the interpreter in the name of compatibility.
11215
11216
11217 2) Linux
11218
11219 The AcpiSrc Source Conversion Utility has been released with the
11220 Linux package for the first time. This is the utility that is
11221 used to convert the ACPI CA base source code to the Linux version.
11222
11223 (Both) Handle P_BLK lengths shorter than 6 more gracefully
11224
11225 (Both) Move more headers to include/acpi, and delete an unused
11226 header.
11227
11228 (Both) Move drivers/acpi/include directory to include/acpi
11229
11230 (Both) Boot functions don't use cmdline, so don't pass it around
11231
11232 (Both) Remove include of unused header (Adrian Bunk)
11233
11234 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
11235 the
11236 former now also includes the latter, acpiphp.h only needs the one,
11237 now.
11238
11239 (2.5) Make it possible to select method of bios restoring after S3
11240 resume. [=> no more ugly ifdefs] (Pavel Machek)
11241
11242 (2.5) Make proc write interfaces work (Pavel Machek)
11243
11244 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
11245
11246 (2.5) Break out ACPI Perf code into its own module, under cpufreq
11247 (Dominik Brodowski)
11248
11249 (2.4) S4BIOS support (Ducrot Bruno)
11250
11251 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
11252 Visinoni)
11253
11254
11255 3) iASL Compiler:
11256
11257 Added support to disassemble SSDT and PSDTs.
11258
11259 Implemented support to obtain SSDTs from the Windows registry if
11260 available.
11261
11262
11263 ----------------------------------------
11264 09 January 2003. Summary of changes for version 20030109.
11265
11266 1) ACPI CA Core Subsystem:
11267
11268 Changed the behavior of the internal Buffer-to-String conversion
11269 function. The current ACPI specification states that the contents
11270 of the buffer are "converted to a string of two-character
11271 hexadecimal numbers, each separated by a space". Unfortunately,
11272 this definition is not backwards compatible with existing ACPI 1.0
11273 implementations (although the behavior was not defined in the ACPI
11274 1.0 specification). The new behavior simply copies data from the
11275 buffer to the string until a null character is found or the end of
11276 the buffer is reached. The new String object is always null
11277 terminated. This problem was seen during the generation of _BIF
11278 battery data where incorrect strings were returned for battery
11279 type, etc. This will also require an errata to the ACPI
11280 specification.
11281
11282 Renamed all instances of NATIVE_UINT and NATIVE_INT to
11283 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
11284
11285 Copyright in all module headers (both Linux and non-Linux) has be
11286 updated to 2003.
11287
11288 Code and Data Size: Current core subsystem library sizes are shown
11289 below. These are the code and data sizes for the acpica.lib
11290 produced by the Microsoft Visual C++ 6.0 compiler, and these
11291 values do not include any ACPI driver or OSPM code. The debug
11292 version of the code includes the debug output trace mechanism and
11293 has a much larger code and data size. Note that these values will
11294 vary depending on the efficiency of the compiler and the compiler
11295 options used during generation.
11296
11297 Previous Release
11298 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11299 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11300 Current Release:
11301 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11302 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11303
11304
11305 2) Linux
11306
11307 Fixed an oops on module insertion/removal (Matthew Tippett)
11308
11309 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
11310
11311 (2.5) Replace pr_debug (Randy Dunlap)
11312
11313 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
11314
11315 (Both) Eliminate spawning of thread from timer callback, in favor
11316 of schedule_work()
11317
11318 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
11319
11320 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
11321
11322 (Both) Add missing statics to button.c (Pavel Machek)
11323
11324 Several changes have been made to the source code translation
11325 utility that generates the Linux Code in order to make the code
11326 more "Linux-like":
11327
11328 All typedefs on structs and unions have been removed in keeping
11329 with the Linux coding style.
11330
11331 Removed the non-Linux SourceSafe module revision number from each
11332 module header.
11333
11334 Completed major overhaul of symbols to be lowercased for linux.
11335 Doubled the number of symbols that are lowercased.
11336
11337 Fixed a problem where identifiers within procedure headers and
11338 within quotes were not fully lower cased (they were left with a
11339 starting capital.)
11340
11341 Some C macros whose only purpose is to allow the generation of 16-
11342 bit code are now completely removed in the Linux code, increasing
11343 readability and maintainability.
11344
11345 ----------------------------------------
11346
11347 12 December 2002. Summary of changes for version 20021212.
11348
11349
11350 1) ACPI CA Core Subsystem:
11351
11352 Fixed a problem where the creation of a zero-length AML Buffer
11353 would cause a fault.
11354
11355 Fixed a problem where a Buffer object that pointed to a static AML
11356 buffer (in an ACPI table) could inadvertently be deleted, causing
11357 memory corruption.
11358
11359 Fixed a problem where a user buffer (passed in to the external
11360 ACPI CA interfaces) could be overwritten if the buffer was too
11361 small to complete the operation, causing memory corruption.
11362
11363 Fixed a problem in the Buffer-to-String conversion code where a
11364 string of length one was always returned, regardless of the size
11365 of the input Buffer object.
11366
11367 Removed the NATIVE_CHAR data type across the entire source due to
11368 lack of need and lack of consistent use.
11369
11370 Code and Data Size: Current core subsystem library sizes are shown
11371 below. These are the code and data sizes for the acpica.lib
11372 produced by the Microsoft Visual C++ 6.0 compiler, and these
11373 values do not include any ACPI driver or OSPM code. The debug
11374 version of the code includes the debug output trace mechanism and
11375 has a much larger code and data size. Note that these values will
11376 vary depending on the efficiency of the compiler and the compiler
11377 options used during generation.
11378
11379 Previous Release
11380 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
11381 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
11382 Current Release:
11383 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11384 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11385
11386
11387 ----------------------------------------
11388 05 December 2002. Summary of changes for version 20021205.
11389
11390 1) ACPI CA Core Subsystem:
11391
11392 Fixed a problem where a store to a String or Buffer object could
11393 cause corruption of the DSDT if the object type being stored was
11394 the same as the target object type and the length of the object
11395 being stored was equal to or smaller than the original (existing)
11396 target object. This was seen to cause corruption of battery _BIF
11397 buffers if the _BIF method modified the buffer on the fly.
11398
11399 Fixed a problem where an internal error was generated if a control
11400 method invocation was used in an OperationRegion, Buffer, or
11401 Package declaration. This was caused by the deferred parsing of
11402 the control method and thus the deferred creation of the internal
11403 method object. The solution to this problem was to create the
11404 internal method object at the moment the method is encountered in
11405 the first pass - so that subsequent references to the method will
11406 able to obtain the required parameter count and thus properly
11407 parse the method invocation. This problem presented itself as an
11408 AE_AML_INTERNAL during the pass 1 parse phase during table load.
11409
11410 Fixed a problem where the internal String object copy routine did
11411 not always allocate sufficient memory for the target String object
11412 and caused memory corruption. This problem was seen to cause
11413 "Allocation already present in list!" errors as memory allocation
11414 became corrupted.
11415
11416 Implemented a new function for the evaluation of namespace objects
11417 that allows the specification of the allowable return object
11418 types. This simplifies a lot of code that checks for a return
11419 object of one or more specific objects returned from the
11420 evaluation (such as _STA, etc.) This may become and external
11421 function if it would be useful to ACPI-related drivers.
11422
11423 Completed another round of prefixing #defines with "ACPI_" for
11424 clarity.
11425
11426 Completed additional code restructuring to allow more modular
11427 linking for iASL compiler and AcpiExec. Several files were split
11428 creating new files. New files: nsparse.c dsinit.c evgpe.c
11429
11430 Implemented an abort mechanism to terminate an executing control
11431 method via the AML debugger. This feature is useful for debugging
11432 control methods that depend (wait) for specific hardware
11433 responses.
11434
11435 Code and Data Size: Current core subsystem library sizes are shown
11436 below. These are the code and data sizes for the acpica.lib
11437 produced by the Microsoft Visual C++ 6.0 compiler, and these
11438 values do not include any ACPI driver or OSPM code. The debug
11439 version of the code includes the debug output trace mechanism and
11440 has a much larger code and data size. Note that these values will
11441 vary depending on the efficiency of the compiler and the compiler
11442 options used during generation.
11443
11444 Previous Release
11445 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
11446 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
11447 Current Release:
11448 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
11449 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
11450
11451
11452 2) iASL Compiler/Disassembler
11453
11454 Fixed a compiler code generation problem for "Interrupt" Resource
11455 Descriptors. If specified in the ASL, the optional "Resource
11456 Source Index" and "Resource Source" fields were not inserted into
11457 the correct location within the AML resource descriptor, creating
11458 an invalid descriptor.
11459
11460 Fixed a disassembler problem for "Interrupt" resource descriptors.
11461 The optional "Resource Source Index" and "Resource Source" fields
11462 were ignored.
11463
11464
11465 ----------------------------------------
11466 22 November 2002. Summary of changes for version 20021122.
11467
11468
11469 1) ACPI CA Core Subsystem:
11470
11471 Fixed a reported problem where an object stored to a Method Local
11472 or Arg was not copied to a new object during the store - the
11473 object pointer was simply copied to the Local/Arg. This caused
11474 all subsequent operations on the Local/Arg to also affect the
11475 original source of the store operation.
11476
11477 Fixed a problem where a store operation to a Method Local or Arg
11478 was not completed properly if the Local/Arg contained a reference
11479 (from RefOf) to a named field. The general-purpose store-to-
11480 namespace-node code is now used so that this case is handled
11481 automatically.
11482
11483 Fixed a problem where the internal object copy routine would cause
11484 a protection fault if the object being copied was a Package and
11485 contained either 1) a NULL package element or 2) a nested sub-
11486 package.
11487
11488 Fixed a problem with the GPE initialization that resulted from an
11489 ambiguity in the ACPI specification. One section of the
11490 specification states that both the address and length of the GPE
11491 block must be zero if the block is not supported. Another section
11492 implies that only the address need be zero if the block is not
11493 supported. The code has been changed so that both the address and
11494 the length must be non-zero to indicate a valid GPE block (i.e.,
11495 if either the address or the length is zero, the GPE block is
11496 invalid.)
11497
11498 Code and Data Size: Current core subsystem library sizes are shown
11499 below. These are the code and data sizes for the acpica.lib
11500 produced by the Microsoft Visual C++ 6.0 compiler, and these
11501 values do not include any ACPI driver or OSPM code. The debug
11502 version of the code includes the debug output trace mechanism and
11503 has a much larger code and data size. Note that these values will
11504 vary depending on the efficiency of the compiler and the compiler
11505 options used during generation.
11506
11507 Previous Release
11508 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
11509 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
11510 Current Release:
11511 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
11512 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
11513
11514
11515 2) Linux
11516
11517 Cleaned up EC driver. Exported an external EC read/write
11518 interface. By going through this, other drivers (most notably
11519 sonypi) will be able to serialize access to the EC.
11520
11521
11522 3) iASL Compiler/Disassembler
11523
11524 Implemented support to optionally generate include files for both
11525 ASM and C (the -i switch). This simplifies BIOS development by
11526 automatically creating include files that contain external
11527 declarations for the symbols that are created within the
11528
11529 (optionally generated) ASM and C AML source files.
11530
11531
11532 ----------------------------------------
11533 15 November 2002. Summary of changes for version 20021115.
11534
11535 1) ACPI CA Core Subsystem:
11536
11537 Fixed a memory leak problem where an error during resolution of
11538
11539 method arguments during a method invocation from another method
11540 failed to cleanup properly by deleting all successfully resolved
11541 argument objects.
11542
11543 Fixed a problem where the target of the Index() operator was not
11544 correctly constructed if the source object was a package. This
11545 problem has not been detected because the use of a target operand
11546 with Index() is very rare.
11547
11548 Fixed a problem with the Index() operator where an attempt was
11549 made to delete the operand objects twice.
11550
11551 Fixed a problem where an attempt was made to delete an operand
11552 twice during execution of the CondRefOf() operator if the target
11553 did not exist.
11554
11555 Implemented the first of perhaps several internal create object
11556 functions that create and initialize a specific object type. This
11557 consolidates duplicated code wherever the object is created, thus
11558 shrinking the size of the subsystem.
11559
11560 Implemented improved debug/error messages for errors that occur
11561 during nested method invocations. All executing method pathnames
11562 are displayed (with the error) as the call stack is unwound - thus
11563 simplifying debug.
11564
11565 Fixed a problem introduced in the 10/02 release that caused
11566 premature deletion of a buffer object if a buffer was used as an
11567 ASL operand where an integer operand is required (Thus causing an
11568 implicit object conversion from Buffer to Integer.) The change in
11569 the 10/02 release was attempting to fix a memory leak (albeit
11570 incorrectly.)
11571
11572 Code and Data Size: Current core subsystem library sizes are shown
11573 below. These are the code and data sizes for the acpica.lib
11574 produced by the Microsoft Visual C++ 6.0 compiler, and these
11575 values do not include any ACPI driver or OSPM code. The debug
11576 version of the code includes the debug output trace mechanism and
11577 has a much larger code and data size. Note that these values will
11578 vary depending on the efficiency of the compiler and the compiler
11579 options used during generation.
11580
11581 Previous Release
11582 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
11583 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
11584 Current Release:
11585 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
11586 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
11587
11588
11589 2) Linux
11590
11591 Changed the implementation of the ACPI semaphores to use down()
11592 instead of down_interruptable(). It is important that the
11593 execution of ACPI control methods not be interrupted by signals.
11594 Methods must run to completion, or the system may be left in an
11595 unknown/unstable state.
11596
11597 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
11598 (Shawn Starr)
11599
11600
11601 3) iASL Compiler/Disassembler
11602
11603
11604 Changed the default location of output files. All output files
11605 are now placed in the current directory by default instead of in
11606 the directory of the source file. This change may affect some
11607 existing makefiles, but it brings the behavior of the compiler in
11608 line with other similar tools. The location of the output files
11609 can be overridden with the -p command line switch.
11610
11611
11612 ----------------------------------------
11613 11 November 2002. Summary of changes for version 20021111.
11614
11615
11616 0) ACPI Specification 2.0B is released and is now available at:
11617 http://www.acpi.info/index.html
11618
11619
11620 1) ACPI CA Core Subsystem:
11621
11622 Implemented support for the ACPI 2.0 SMBus Operation Regions.
11623 This includes the early detection and handoff of the request to
11624 the SMBus region handler (avoiding all of the complex field
11625 support code), and support for the bidirectional return packet
11626 from an SMBus write operation. This paves the way for the
11627 development of SMBus drivers in each host operating system.
11628
11629 Fixed a problem where the semaphore WAIT_FOREVER constant was
11630 defined as 32 bits, but must be 16 bits according to the ACPI
11631 specification. This had the side effect of causing ASL
11632 Mutex/Event timeouts even though the ASL code requested a wait
11633 forever. Changed all internal references to the ACPI timeout
11634 parameter to 16 bits to prevent future problems. Changed the name
11635 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
11636
11637 Code and Data Size: Current core subsystem library sizes are shown
11638 below. These are the code and data sizes for the acpica.lib
11639 produced by the Microsoft Visual C++ 6.0 compiler, and these
11640 values do not include any ACPI driver or OSPM code. The debug
11641 version of the code includes the debug output trace mechanism and
11642 has a much larger code and data size. Note that these values will
11643 vary depending on the efficiency of the compiler and the compiler
11644 options used during generation.
11645
11646 Previous Release
11647 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
11648 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
11649 Current Release:
11650 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
11651 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
11652
11653
11654 2) Linux
11655
11656 Module loading/unloading fixes (John Cagle)
11657
11658
11659 3) iASL Compiler/Disassembler
11660
11661 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
11662
11663 Implemented support for the disassembly of all SMBus protocol
11664 keywords (SMBQuick, SMBWord, etc.)
11665
11666 ----------------------------------------
11667 01 November 2002. Summary of changes for version 20021101.
11668
11669
11670 1) ACPI CA Core Subsystem:
11671
11672 Fixed a problem where platforms that have a GPE1 block but no GPE0
11673 block were not handled correctly. This resulted in a "GPE
11674 overlap" error message. GPE0 is no longer required.
11675
11676 Removed code added in the previous release that inserted nodes
11677 into the namespace in alphabetical order. This caused some side-
11678 effects on various machines. The root cause of the problem is
11679 still under investigation since in theory, the internal ordering
11680 of the namespace nodes should not matter.
11681
11682
11683 Enhanced error reporting for the case where a named object is not
11684 found during control method execution. The full ACPI namepath
11685 (name reference) of the object that was not found is displayed in
11686 this case.
11687
11688 Note: as a result of the overhaul of the namespace object types in
11689 the previous release, the namespace nodes for the predefined
11690 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
11691 instead of ACPI_TYPE_ANY. This simplifies the namespace
11692 management code but may affect code that walks the namespace tree
11693 looking for specific object types.
11694
11695 Code and Data Size: Current core subsystem library sizes are shown
11696 below. These are the code and data sizes for the acpica.lib
11697 produced by the Microsoft Visual C++ 6.0 compiler, and these
11698 values do not include any ACPI driver or OSPM code. The debug
11699 version of the code includes the debug output trace mechanism and
11700 has a much larger code and data size. Note that these values will
11701 vary depending on the efficiency of the compiler and the compiler
11702 options used during generation.
11703
11704 Previous Release
11705 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
11706 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
11707 Current Release:
11708 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
11709 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
11710
11711
11712 2) Linux
11713
11714 Fixed a problem introduced in the previous release where the
11715 Processor and Thermal objects were not recognized and installed in
11716 /proc. This was related to the scope type change described above.
11717
11718
11719 3) iASL Compiler/Disassembler
11720
11721 Implemented the -g option to get all of the required ACPI tables
11722 from the registry and save them to files (Windows version of the
11723 compiler only.) The required tables are the FADT, FACS, and DSDT.
11724
11725 Added ACPI table checksum validation during table disassembly in
11726 order to catch corrupted tables.
11727
11728
11729 ----------------------------------------
11730 22 October 2002. Summary of changes for version 20021022.
11731
11732 1) ACPI CA Core Subsystem:
11733
11734 Implemented a restriction on the Scope operator that the target
11735 must already exist in the namespace at the time the operator is
11736 encountered (during table load or method execution). In other
11737 words, forward references are not allowed and Scope() cannot
11738 create a new object. This changes the previous behavior where the
11739 interpreter would create the name if not found. This new behavior
11740 correctly enables the search-to-root algorithm during namespace
11741 lookup of the target name. Because of this upsearch, this fixes
11742 the known Compaq _SB_.OKEC problem and makes both the AML
11743 interpreter and iASL compiler compatible with other ACPI
11744 implementations.
11745
11746 Completed a major overhaul of the internal ACPI object types for
11747 the ACPI Namespace and the associated operand objects. Many of
11748 these types had become obsolete with the introduction of the two-
11749 pass namespace load. This cleanup simplifies the code and makes
11750 the entire namespace load mechanism much clearer and easier to
11751 understand.
11752
11753 Improved debug output for tracking scope opening/closing to help
11754 diagnose scoping issues. The old scope name as well as the new
11755 scope name are displayed. Also improved error messages for
11756 problems with ASL Mutex objects and error messages for GPE
11757 problems.
11758
11759 Cleaned up the namespace dump code, removed obsolete code.
11760
11761 All string output (for all namespace/object dumps) now uses the
11762 common ACPI string output procedure which handles escapes properly
11763 and does not emit non-printable characters.
11764
11765 Fixed some issues with constants in the 64-bit version of the
11766 local C library (utclib.c)
11767
11768
11769 2) Linux
11770
11771 EC Driver: No longer attempts to acquire the Global Lock at
11772 interrupt level.
11773
11774
11775 3) iASL Compiler/Disassembler
11776
11777 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
11778 2 opcodes outside of a control method. This means that the
11779 "executable" operators (versus the "namespace" operators) cannot
11780 be used at the table level; they can only be used within a control
11781 method.
11782
11783 Implemented the restriction on the Scope() operator where the
11784 target must already exist in the namespace at the time the
11785 operator is encountered (during ASL compilation). In other words,
11786 forward references are not allowed and Scope() cannot create a new
11787 object. This makes the iASL compiler compatible with other ACPI
11788 implementations and makes the Scope() implementation adhere to the
11789 ACPI specification.
11790
11791 Fixed a problem where namepath optimization for the Alias operator
11792 was optimizing the wrong path (of the two namepaths.) This caused
11793 a "Missing alias link" error message.
11794
11795 Fixed a problem where an "unknown reserved name" warning could be
11796 incorrectly generated for names like "_SB" when the trailing
11797 underscore is not used in the original ASL.
11798
11799 Fixed a problem where the reserved name check did not handle
11800 NamePaths with multiple NameSegs correctly. The first nameseg of
11801 the NamePath was examined instead of the last NameSeg.
11802
11803
11804 ----------------------------------------
11805
11806 02 October 2002. Summary of changes for this release.
11807
11808
11809 1) ACPI CA Core Subsystem version 20021002:
11810
11811 Fixed a problem where a store/copy of a string to an existing
11812 string did not always set the string length properly in the String
11813 object.
11814
11815 Fixed a reported problem with the ToString operator where the
11816 behavior was identical to the ToHexString operator instead of just
11817 simply converting a raw buffer to a string data type.
11818
11819 Fixed a problem where CopyObject and the other "explicit"
11820 conversion operators were not updating the internal namespace node
11821 type as part of the store operation.
11822
11823 Fixed a memory leak during implicit source operand conversion
11824 where the original object was not deleted if it was converted to a
11825 new object of a different type.
11826
11827 Enhanced error messages for all problems associated with namespace
11828 lookups. Common procedure generates and prints the lookup name as
11829 well as the formatted status.
11830
11831 Completed implementation of a new design for the Alias support
11832 within the namespace. The existing design did not handle the case
11833 where a new object was assigned to one of the two names due to the
11834 use of an explicit conversion operator, resulting in the two names
11835 pointing to two different objects. The new design simply points
11836 the Alias name to the original name node - not to the object.
11837 This results in a level of indirection that must be handled in the
11838 name resolution mechanism.
11839
11840 Code and Data Size: Current core subsystem library sizes are shown
11841 below. These are the code and data sizes for the acpica.lib
11842 produced by the Microsoft Visual C++ 6.0 compiler, and these
11843 values do not include any ACPI driver or OSPM code. The debug
11844 version of the code includes the debug output trace mechanism and
11845 has a larger code and data size. Note that these values will vary
11846 depending on the efficiency of the compiler and the compiler
11847 options used during generation.
11848
11849 Previous Release
11850 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
11851 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
11852 Current Release:
11853 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
11854 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
11855
11856
11857 2) Linux
11858
11859 Initialize thermal driver's timer before it is used. (Knut
11860 Neumann)
11861
11862 Allow handling negative celsius values. (Kochi Takayoshi)
11863
11864 Fix thermal management and make trip points. R/W (Pavel Machek)
11865
11866 Fix /proc/acpi/sleep. (P. Christeas)
11867
11868 IA64 fixes. (David Mosberger)
11869
11870 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
11871
11872 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
11873 Brodowski)
11874
11875
11876 3) iASL Compiler/Disassembler
11877
11878 Clarified some warning/error messages.
11879
11880
11881 ----------------------------------------
11882 18 September 2002. Summary of changes for this release.
11883
11884
11885 1) ACPI CA Core Subsystem version 20020918:
11886
11887 Fixed a reported problem with reference chaining (via the Index()
11888 and RefOf() operators) in the ObjectType() and SizeOf() operators.
11889 The definition of these operators includes the dereferencing of
11890 all chained references to return information on the base object.
11891
11892 Fixed a problem with stores to indexed package elements - the
11893 existing code would not complete the store if an "implicit
11894 conversion" was not performed. In other words, if the existing
11895 object (package element) was to be replaced completely, the code
11896 didn't handle this case.
11897
11898 Relaxed typechecking on the ASL "Scope" operator to allow the
11899 target name to refer to an object of type Integer, String, or
11900 Buffer, in addition to the scoping object types (Device,
11901 predefined Scopes, Processor, PowerResource, and ThermalZone.)
11902 This allows existing AML code that has workarounds for a bug in
11903 Windows to function properly. A warning is issued, however. This
11904 affects both the AML interpreter and the iASL compiler. Below is
11905 an example of this type of ASL code:
11906
11907 Name(DEB,0x00)
11908 Scope(DEB)
11909 {
11910
11911 Fixed some reported problems with 64-bit integer support in the
11912 local implementation of C library functions (clib.c)
11913
11914
11915 2) Linux
11916
11917 Use ACPI fix map region instead of IOAPIC region, since it is
11918 undefined in non-SMP.
11919
11920 Ensure that the SCI has the proper polarity and trigger, even on
11921 systems that do not have an interrupt override entry in the MADT.
11922
11923 2.5 big driver reorganization (Pat Mochel)
11924
11925 Use early table mapping code from acpitable.c (Andi Kleen)
11926
11927 New blacklist entries (Andi Kleen)
11928
11929 Blacklist improvements. Split blacklist code out into a separate
11930 file. Move checking the blacklist to very early. Previously, we
11931 would use ACPI tables, and then halfway through init, check the
11932 blacklist -- too late. Now, it's early enough to completely fall-
11933 back to non-ACPI.
11934
11935
11936 3) iASL Compiler/Disassembler version 20020918:
11937
11938 Fixed a problem where the typechecking code didn't know that an
11939 alias could point to a method. In other words, aliases were not
11940 being dereferenced during typechecking.
11941
11942
11943 ----------------------------------------
11944 29 August 2002. Summary of changes for this release.
11945
11946 1) ACPI CA Core Subsystem Version 20020829:
11947
11948 If the target of a Scope() operator already exists, it must be an
11949 object type that actually opens a scope -- such as a Device,
11950 Method, Scope, etc. This is a fatal runtime error. Similar error
11951 check has been added to the iASL compiler also.
11952
11953 Tightened up the namespace load to disallow multiple names in the
11954 same scope. This previously was allowed if both objects were of
11955 the same type. (i.e., a lookup was the same as entering a new
11956 name).
11957
11958
11959 2) Linux
11960
11961 Ensure that the ACPI interrupt has the proper trigger and
11962 polarity.
11963
11964 local_irq_disable is extraneous. (Matthew Wilcox)
11965
11966 Make "acpi=off" actually do what it says, and not use the ACPI
11967 interpreter *or* the tables.
11968
11969 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
11970 Takayoshi)
11971
11972
11973 3) iASL Compiler/Disassembler Version 20020829:
11974
11975 Implemented namepath optimization for name declarations. For
11976 example, a declaration like "Method (\_SB_.ABCD)" would get
11977 optimized to "Method (ABCD)" if the declaration is within the
11978 \_SB_ scope. This optimization is in addition to the named
11979 reference path optimization first released in the previous
11980 version. This would seem to complete all possible optimizations
11981 for namepaths within the ASL/AML.
11982
11983 If the target of a Scope() operator already exists, it must be an
11984 object type that actually opens a scope -- such as a Device,
11985 Method, Scope, etc.
11986
11987 Implemented a check and warning for unreachable code in the same
11988 block below a Return() statement.
11989
11990 Fixed a problem where the listing file was not generated if the
11991 compiler aborted if the maximum error count was exceeded (200).
11992
11993 Fixed a problem where the typechecking of method return values was
11994 broken. This includes the check for a return value when the
11995 method is invoked as a TermArg (a return value is expected.)
11996
11997 Fixed a reported problem where EOF conditions during a quoted
11998 string or comment caused a fault.
11999
12000
12001 ----------------------------------------
12002 15 August 2002. Summary of changes for this release.
12003
12004 1) ACPI CA Core Subsystem Version 20020815:
12005
12006 Fixed a reported problem where a Store to a method argument that
12007 contains a reference did not perform the indirect store correctly.
12008 This problem was created during the conversion to the new
12009 reference object model - the indirect store to a method argument
12010 code was not updated to reflect the new model.
12011
12012 Reworked the ACPI mode change code to better conform to ACPI 2.0,
12013 handle corner cases, and improve code legibility (Kochi Takayoshi)
12014
12015 Fixed a problem with the pathname parsing for the carat (^)
12016 prefix. The heavy use of the carat operator by the new namepath
12017 optimization in the iASL compiler uncovered a problem with the AML
12018 interpreter handling of this prefix. In the case where one or
12019 more carats precede a single nameseg, the nameseg was treated as
12020 standalone and the search rule (to root) was inadvertently
12021 applied. This could cause both the iASL compiler and the
12022 interpreter to find the wrong object or to miss the error that
12023 should occur if the object does not exist at that exact pathname.
12024
12025 Found and fixed the problem where the HP Pavilion DSDT would not
12026 load. This was a relatively minor tweak to the table loading code
12027 (a problem caused by the unexpected encounter with a method
12028 invocation not within a control method), but it does not solve the
12029 overall issue of the execution of AML code at the table level.
12030 This investigation is still ongoing.
12031
12032 Code and Data Size: Current core subsystem library sizes are shown
12033 below. These are the code and data sizes for the acpica.lib
12034 produced by the Microsoft Visual C++ 6.0 compiler, and these
12035 values do not include any ACPI driver or OSPM code. The debug
12036 version of the code includes the debug output trace mechanism and
12037 has a larger code and data size. Note that these values will vary
12038 depending on the efficiency of the compiler and the compiler
12039 options used during generation.
12040
12041 Previous Release
12042 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
12043 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
12044 Current Release:
12045 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
12046 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
12047
12048
12049 2) Linux
12050
12051 Remove redundant slab.h include (Brad Hards)
12052
12053 Fix several bugs in thermal.c (Herbert Nachtnebel)
12054
12055 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
12056
12057 Change acpi_system_suspend to use updated irq functions (Pavel
12058 Machek)
12059
12060 Export acpi_get_firmware_table (Matthew Wilcox)
12061
12062 Use proper root proc entry for ACPI (Kochi Takayoshi)
12063
12064 Fix early-boot table parsing (Bjorn Helgaas)
12065
12066
12067 3) iASL Compiler/Disassembler
12068
12069 Reworked the compiler options to make them more consistent and to
12070 use two-letter options where appropriate. We were running out of
12071 sensible letters. This may break some makefiles, so check the
12072 current options list by invoking the compiler with no parameters.
12073
12074 Completed the design and implementation of the ASL namepath
12075 optimization option for the compiler. This option optimizes all
12076 references to named objects to the shortest possible path. The
12077 first attempt tries to utilize a single nameseg (4 characters) and
12078 the "search-to-root" algorithm used by the interpreter. If that
12079 cannot be used (because either the name is not in the search path
12080 or there is a conflict with another object with the same name),
12081 the pathname is optimized using the carat prefix (usually a
12082 shorter string than specifying the entire path from the root.)
12083
12084 Implemented support to obtain the DSDT from the Windows registry
12085 (when the disassembly option is specified with no input file).
12086 Added this code as the implementation for AcpiOsTableOverride in
12087 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
12088 utility) to scan memory for the DSDT to the AcpiOsTableOverride
12089 function in the DOS OSL to make the disassembler truly OS
12090 independent.
12091
12092 Implemented a new option to disassemble and compile in one step.
12093 When used without an input filename, this option will grab the
12094 DSDT from the local machine, disassemble it, and compile it in one
12095 step.
12096
12097 Added a warning message for invalid escapes (a backslash followed
12098 by any character other than the allowable escapes). This catches
12099 the quoted string error "\_SB_" (which should be "\\_SB_" ).
12100
12101 Also, there are numerous instances in the ACPI specification where
12102 this error occurs.
12103
12104 Added a compiler option to disable all optimizations. This is
12105 basically the "compatibility mode" because by using this option,
12106 the AML code will come out exactly the same as other ASL
12107 compilers.
12108
12109 Added error messages for incorrectly ordered dependent resource
12110 functions. This includes: missing EndDependentFn macro at end of
12111 dependent resource list, nested dependent function macros (both
12112 start and end), and missing StartDependentFn macro. These are
12113 common errors that should be caught at compile time.
12114
12115 Implemented _OSI support for the disassembler and compiler. _OSI
12116 must be included in the namespace for proper disassembly (because
12117 the disassembler must know the number of arguments.)
12118
12119 Added an "optimization" message type that is optional (off by
12120 default). This message is used for all optimizations - including
12121 constant folding, integer optimization, and namepath optimization.
12122
12123 ----------------------------------------
12124 25 July 2002. Summary of changes for this release.
12125
12126
12127 1) ACPI CA Core Subsystem Version 20020725:
12128
12129 The AML Disassembler has been enhanced to produce compilable ASL
12130 code and has been integrated into the iASL compiler (see below) as
12131 well as the single-step disassembly for the AML debugger and the
12132 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
12133 resource templates and macros are fully supported. The
12134 disassembler has been tested on over 30 different AML files,
12135 producing identical AML when the resulting disassembled ASL file
12136 is recompiled with the same ASL compiler.
12137
12138 Modified the Resource Manager to allow zero interrupts and zero
12139 dma channels during the GetCurrentResources call. This was
12140 causing problems on some platforms.
12141
12142 Added the AcpiOsRedirectOutput interface to the OSL to simplify
12143 output redirection for the AcpiOsPrintf and AcpiOsVprintf
12144 interfaces.
12145
12146 Code and Data Size: Current core subsystem library sizes are shown
12147 below. These are the code and data sizes for the acpica.lib
12148 produced by the Microsoft Visual C++ 6.0 compiler, and these
12149 values do not include any ACPI driver or OSPM code. The debug
12150 version of the code includes the debug output trace mechanism and
12151 has a larger code and data size. Note that these values will vary
12152 depending on the efficiency of the compiler and the compiler
12153 options used during generation.
12154
12155 Previous Release
12156 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
12157 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
12158 Current Release:
12159 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
12160 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
12161
12162
12163 2) Linux
12164
12165 Fixed a panic in the EC driver (Dominik Brodowski)
12166
12167 Implemented checksum of the R/XSDT itself during Linux table scan
12168 (Richard Schaal)
12169
12170
12171 3) iASL compiler
12172
12173 The AML disassembler is integrated into the compiler. The "-d"
12174 option invokes the disassembler to completely disassemble an
12175 input AML file, producing as output a text ASL file with the
12176 extension ".dsl" (to avoid name collisions with existing .asl
12177 source files.) A future enhancement will allow the disassembler
12178 to obtain the BIOS DSDT from the registry under Windows.
12179
12180 Fixed a problem with the VendorShort and VendorLong resource
12181 descriptors where an invalid AML sequence was created.
12182
12183 Implemented a fix for BufferData term in the ASL parser. It was
12184 inadvertently defined twice, allowing invalid syntax to pass and
12185 causing reduction conflicts.
12186
12187 Fixed a problem where the Ones opcode could get converted to a
12188 value of zero if "Ones" was used where a byte, word or dword value
12189 was expected. The 64-bit value is now truncated to the correct
12190 size with the correct value.
12191
12192
12193
12194 ----------------------------------------
12195 02 July 2002. Summary of changes for this release.
12196
12197
12198 1) ACPI CA Core Subsystem Version 20020702:
12199
12200 The Table Manager code has been restructured to add several new
12201 features. Tables that are not required by the core subsystem
12202 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
12203 validated in any way and are returned from AcpiGetFirmwareTable if
12204 requested. The AcpiOsTableOverride interface is now called for
12205 each table that is loaded by the subsystem in order to allow the
12206 host to override any table it chooses. Previously, only the DSDT
12207 could be overridden. Added one new files, tbrsdt.c and
12208 tbgetall.c.
12209
12210 Fixed a problem with the conversion of internal package objects to
12211 external objects (when a package is returned from a control
12212 method.) The return buffer length was set to zero instead of the
12213 proper length of the package object.
12214
12215 Fixed a reported problem with the use of the RefOf and DeRefOf
12216 operators when passing reference arguments to control methods. A
12217 new type of Reference object is used internally for references
12218 produced by the RefOf operator.
12219
12220 Added additional error messages in the Resource Manager to explain
12221 AE_BAD_DATA errors when they occur during resource parsing.
12222
12223 Split the AcpiEnableSubsystem into two primitives to enable a
12224 finer granularity initialization sequence. These two calls should
12225 be called in this order: AcpiEnableSubsystem (flags),
12226 AcpiInitializeObjects (flags). The flags parameter remains the
12227 same.
12228
12229
12230 2) Linux
12231
12232 Updated the ACPI utilities module to understand the new style of
12233 fully resolved package objects that are now returned from the core
12234 subsystem. This eliminates errors of the form:
12235
12236 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
12237 acpi_utils-0430 [145] acpi_evaluate_reference:
12238 Invalid element in package (not a device reference)
12239
12240 The method evaluation utility uses the new buffer allocation
12241 scheme instead of calling AcpiEvaluate Object twice.
12242
12243 Added support for ECDT. This allows the use of the Embedded
12244
12245 Controller before the namespace has been fully initialized, which
12246 is necessary for ACPI 2.0 support, and for some laptops to
12247 initialize properly. (Laptops using ECDT are still rare, so only
12248 limited testing was performed of the added functionality.)
12249
12250 Fixed memory leaks in the EC driver.
12251
12252 Eliminated a brittle code structure in acpi_bus_init().
12253
12254 Eliminated the acpi_evaluate() helper function in utils.c. It is
12255 no longer needed since acpi_evaluate_object can optionally
12256 allocate memory for the return object.
12257
12258 Implemented fix for keyboard hang when getting battery readings on
12259 some systems (Stephen White)
12260
12261 PCI IRQ routing update (Dominik Brodowski)
12262
12263 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
12264 support
12265
12266 ----------------------------------------
12267 11 June 2002. Summary of changes for this release.
12268
12269
12270 1) ACPI CA Core Subsystem Version 20020611:
12271
12272 Fixed a reported problem where constants such as Zero and One
12273 appearing within _PRT packages were not handled correctly within
12274 the resource manager code. Originally reported against the ASL
12275 compiler because the code generator now optimizes integers to
12276 their minimal AML representation (i.e. AML constants if possible.)
12277 The _PRT code now handles all AML constant opcodes correctly
12278 (Zero, One, Ones, Revision).
12279
12280 Fixed a problem with the Concatenate operator in the AML
12281 interpreter where a buffer result object was incorrectly marked as
12282 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
12283
12284 All package sub-objects are now fully resolved before they are
12285 returned from the external ACPI interfaces. This means that name
12286 strings are resolved to object handles, and constant operators
12287 (Zero, One, Ones, Revision) are resolved to Integers.
12288
12289 Implemented immediate resolution of the AML Constant opcodes
12290 (Zero, One, Ones, Revision) to Integer objects upon detection
12291 within the AML stream. This has simplified and reduced the
12292 generated code size of the subsystem by eliminating about 10
12293 switch statements for these constants (which previously were
12294 contained in Reference objects.) The complicating issues are that
12295 the Zero opcode is used as a "placeholder" for unspecified
12296 optional target operands and stores to constants are defined to be
12297 no-ops.
12298
12299 Code and Data Size: Current core subsystem library sizes are shown
12300 below. These are the code and data sizes for the acpica.lib
12301 produced by the Microsoft Visual C++ 6.0 compiler, and these
12302 values do not include any ACPI driver or OSPM code. The debug
12303 version of the code includes the debug output trace mechanism and
12304 has a larger code and data size. Note that these values will vary
12305 depending on the efficiency of the compiler and the compiler
12306 options used during generation.
12307
12308 Previous Release
12309 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
12310 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
12311 Current Release:
12312 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
12313 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
12314
12315
12316 2) Linux
12317
12318
12319 Added preliminary support for obtaining _TRA data for PCI root
12320 bridges (Bjorn Helgaas).
12321
12322
12323 3) iASL Compiler Version X2046:
12324
12325 Fixed a problem where the "_DDN" reserved name was defined to be a
12326 control method with one argument. There are no arguments, and
12327 _DDN does not have to be a control method.
12328
12329 Fixed a problem with the Linux version of the compiler where the
12330 source lines printed with error messages were the wrong lines.
12331 This turned out to be the "LF versus CR/LF" difference between
12332 Windows and Unix. This appears to be the longstanding issue
12333 concerning listing output and error messages.
12334
12335 Fixed a problem with the Linux version of compiler where opcode
12336 names within error messages were wrong. This was caused by a
12337 slight difference in the output of the Flex tool on Linux versus
12338 Windows.
12339
12340 Fixed a problem with the Linux compiler where the hex output files
12341 contained some garbage data caused by an internal buffer overrun.
12342
12343
12344 ----------------------------------------
12345 17 May 2002. Summary of changes for this release.
12346
12347
12348 1) ACPI CA Core Subsystem Version 20020517:
12349
12350 Implemented a workaround to an BIOS bug discovered on the HP
12351 OmniBook where the FADT revision number and the table size are
12352 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
12353 behavior is to fallback to using only the ACPI 1.0 fields of the
12354 FADT if the table is too small to be a ACPI 2.0 table as claimed
12355 by the revision number. Although this is a BIOS bug, this is a
12356 case where the workaround is simple enough and with no side
12357 effects, so it seemed prudent to add it. A warning message is
12358 issued, however.
12359
12360 Implemented minimum size checks for the fixed-length ACPI tables -
12361 - the FADT and FACS, as well as consistency checks between the
12362 revision number and the table size.
12363
12364 Fixed a reported problem in the table override support where the
12365 new table pointer was incorrectly treated as a physical address
12366 instead of a logical address.
12367
12368 Eliminated the use of the AE_AML_ERROR exception and replaced it
12369 with more descriptive codes.
12370
12371 Fixed a problem where an exception would occur if an ASL Field was
12372 defined with no named Field Units underneath it (used by some
12373 index fields).
12374
12375 Code and Data Size: Current core subsystem library sizes are shown
12376 below. These are the code and data sizes for the acpica.lib
12377 produced by the Microsoft Visual C++ 6.0 compiler, and these
12378 values do not include any ACPI driver or OSPM code. The debug
12379 version of the code includes the debug output trace mechanism and
12380 has a larger code and data size. Note that these values will vary
12381 depending on the efficiency of the compiler and the compiler
12382 options used during generation.
12383
12384 Previous Release
12385 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
12386 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
12387 Current Release:
12388 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
12389 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
12390
12391
12392
12393 2) Linux
12394
12395 Much work done on ACPI init (MADT and PCI IRQ routing support).
12396 (Paul D. and Dominik Brodowski)
12397
12398 Fix PCI IRQ-related panic on boot (Sam Revitch)
12399
12400 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
12401
12402 Fix "MHz" typo (Dominik Brodowski)
12403
12404 Fix RTC year 2000 issue (Dominik Brodowski)
12405
12406 Preclude multiple button proc entries (Eric Brunet)
12407
12408 Moved arch-specific code out of include/platform/aclinux.h
12409
12410 3) iASL Compiler Version X2044:
12411
12412 Implemented error checking for the string used in the EISAID macro
12413 (Usually used in the definition of the _HID object.) The code now
12414 strictly enforces the PnP format - exactly 7 characters, 3
12415 uppercase letters and 4 hex digits.
12416
12417 If a raw string is used in the definition of the _HID object
12418 (instead of the EISAID macro), the string must contain all
12419 alphanumeric characters (e.g., "*PNP0011" is not allowed because
12420 of the asterisk.)
12421
12422 Implemented checking for invalid use of ACPI reserved names for
12423 most of the name creation operators (Name, Device, Event, Mutex,
12424 OperationRegion, PowerResource, Processor, and ThermalZone.)
12425 Previously, this check was only performed for control methods.
12426
12427 Implemented an additional check on the Name operator to emit an
12428 error if a reserved name that must be implemented in ASL as a
12429 control method is used. We know that a reserved name must be a
12430 method if it is defined with input arguments.
12431
12432 The warning emitted when a namespace object reference is not found
12433 during the cross reference phase has been changed into an error.
12434 The "External" directive should be used for names defined in other
12435 modules.
12436
12437
12438 4) Tools and Utilities
12439
12440 The 16-bit tools (adump16 and aexec16) have been regenerated and
12441 tested.
12442
12443 Fixed a problem with the output of both acpidump and adump16 where
12444 the indentation of closing parentheses and brackets was not
12445
12446 aligned properly with the parent block.
12447
12448
12449 ----------------------------------------
12450 03 May 2002. Summary of changes for this release.
12451
12452
12453 1) ACPI CA Core Subsystem Version 20020503:
12454
12455 Added support a new OSL interface that allows the host operating
12456
12457 system software to override the DSDT found in the firmware -
12458 AcpiOsTableOverride. With this interface, the OSL can examine the
12459 version of the firmware DSDT and replace it with a different one
12460 if desired.
12461
12462 Added new external interfaces for accessing ACPI registers from
12463 device drivers and other system software - AcpiGetRegister and
12464 AcpiSetRegister. This was simply an externalization of the
12465 existing AcpiHwBitRegister interfaces.
12466
12467 Fixed a regression introduced in the previous build where the
12468 ASL/AML CreateField operator always returned an error,
12469 "destination must be a NS Node".
12470
12471 Extended the maximum time (before failure) to successfully enable
12472 ACPI mode to 3 seconds.
12473
12474 Code and Data Size: Current core subsystem library sizes are shown
12475 below. These are the code and data sizes for the acpica.lib
12476 produced by the Microsoft Visual C++ 6.0 compiler, and these
12477 values do not include any ACPI driver or OSPM code. The debug
12478 version of the code includes the debug output trace mechanism and
12479 has a larger code and data size. Note that these values will vary
12480 depending on the efficiency of the compiler and the compiler
12481 options used during generation.
12482
12483 Previous Release
12484 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
12485 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
12486 Current Release:
12487 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
12488 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
12489
12490
12491 2) Linux
12492
12493 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
12494 free. While 3 out of 4 of our in-house systems work fine, the last
12495 one still hangs when testing the LAPIC timer.
12496
12497 Renamed many files in 2.5 kernel release to omit "acpi_" from the
12498 name.
12499
12500 Added warning on boot for Presario 711FR.
12501
12502 Sleep improvements (Pavel Machek)
12503
12504 ACPI can now be built without CONFIG_PCI enabled.
12505
12506 IA64: Fixed memory map functions (JI Lee)
12507
12508
12509 3) iASL Compiler Version X2043:
12510
12511 Added support to allow the compiler to be integrated into the MS
12512 VC++ development environment for one-button compilation of single
12513 files or entire projects -- with error-to-source-line mapping.
12514
12515 Implemented support for compile-time constant folding for the
12516 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
12517 specification. This allows the ASL writer to use expressions
12518 instead of Integer/Buffer/String constants in terms that must
12519 evaluate to constants at compile time and will also simplify the
12520 emitted AML in any such sub-expressions that can be folded
12521 (evaluated at compile-time.) This increases the size of the
12522 compiler significantly because a portion of the ACPI CA AML
12523 interpreter is included within the compiler in order to pre-
12524 evaluate constant expressions.
12525
12526
12527 Fixed a problem with the "Unicode" ASL macro that caused the
12528 compiler to fault. (This macro is used in conjunction with the
12529 _STR reserved name.)
12530
12531 Implemented an AML opcode optimization to use the Zero, One, and
12532 Ones opcodes where possible to further reduce the size of integer
12533 constants and thus reduce the overall size of the generated AML
12534 code.
12535
12536 Implemented error checking for new reserved terms for ACPI version
12537 2.0A.
12538
12539 Implemented the -qr option to display the current list of ACPI
12540 reserved names known to the compiler.
12541
12542 Implemented the -qc option to display the current list of ASL
12543 operators that are allowed within constant expressions and can
12544 therefore be folded at compile time if the operands are constants.
12545
12546
12547 4) Documentation
12548
12549 Updated the Programmer's Reference for new interfaces, data types,
12550 and memory allocation model options.
12551
12552 Updated the iASL Compiler User Reference to apply new format and
12553 add information about new features and options.
12554
12555 ----------------------------------------
12556 19 April 2002. Summary of changes for this release.
12557
12558 1) ACPI CA Core Subsystem Version 20020419:
12559
12560 The source code base for the Core Subsystem has been completely
12561 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
12562 versions. The Lint option files used are included in the
12563 /acpi/generate/lint directory.
12564
12565 Implemented enhanced status/error checking across the entire
12566 Hardware manager subsystem. Any hardware errors (reported from
12567 the OSL) are now bubbled up and will abort a running control
12568 method.
12569
12570
12571 Fixed a problem where the per-ACPI-table integer width (32 or 64)
12572 was stored only with control method nodes, causing a fault when
12573 non-control method code was executed during table loading. The
12574 solution implemented uses a global variable to indicate table
12575 width across the entire ACPI subsystem. Therefore, ACPI CA does
12576 not support mixed integer widths across different ACPI tables
12577 (DSDT, SSDT).
12578
12579 Fixed a problem where NULL extended fields (X fields) in an ACPI
12580 2.0 ACPI FADT caused the table load to fail. Although the
12581 existing ACPI specification is a bit fuzzy on this topic, the new
12582 behavior is to fall back on a ACPI 1.0 field if the corresponding
12583 ACPI 2.0 X field is zero (even though the table revision indicates
12584 a full ACPI 2.0 table.) The ACPI specification will be updated to
12585 clarify this issue.
12586
12587 Fixed a problem with the SystemMemory operation region handler
12588 where memory was always accessed byte-wise even if the AML-
12589 specified access width was larger than a byte. This caused
12590 problems on systems with memory-mapped I/O. Memory is now
12591 accessed with the width specified. On systems that do not support
12592 non-aligned transfers, a check is made to guarantee proper address
12593 alignment before proceeding in order to avoid an AML-caused
12594 alignment fault within the kernel.
12595
12596
12597 Fixed a problem with the ExtendedIrq resource where only one byte
12598 of the 4-byte Irq field was extracted.
12599
12600 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
12601 function was out of date and required a rewrite.
12602
12603 Code and Data Size: Current core subsystem library sizes are shown
12604 below. These are the code and data sizes for the acpica.lib
12605 produced by the Microsoft Visual C++ 6.0 compiler, and these
12606 values do not include any ACPI driver or OSPM code. The debug
12607 version of the code includes the debug output trace mechanism and
12608 has a larger code and data size. Note that these values will vary
12609 depending on the efficiency of the compiler and the compiler
12610 options used during generation.
12611
12612 Previous Release
12613 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
12614 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
12615 Current Release:
12616 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
12617 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
12618
12619
12620 2) Linux
12621
12622 PCI IRQ routing fixes (Dominik Brodowski)
12623
12624
12625 3) iASL Compiler Version X2042:
12626
12627 Implemented an additional compile-time error check for a field
12628 unit whose size + minimum access width would cause a run-time
12629 access beyond the end-of-region. Previously, only the field size
12630 itself was checked.
12631
12632 The Core subsystem and iASL compiler now share a common parse
12633 object in preparation for compile-time evaluation of the type
12634 3/4/5 ASL operators.
12635
12636
12637 ----------------------------------------
12638 Summary of changes for this release: 03_29_02
12639
12640 1) ACPI CA Core Subsystem Version 20020329:
12641
12642 Implemented support for late evaluation of TermArg operands to
12643 Buffer and Package objects. This allows complex expressions to be
12644 used in the declarations of these object types.
12645
12646 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
12647 1.0, if the field was larger than 32 bits, it was returned as a
12648 buffer - otherwise it was returned as an integer. In ACPI 2.0,
12649 the field is returned as a buffer only if the field is larger than
12650 64 bits. The TableRevision is now considered when making this
12651 conversion to avoid incompatibility with existing ASL code.
12652
12653 Implemented logical addressing for AcpiOsGetRootPointer. This
12654 allows an RSDP with either a logical or physical address. With
12655 this support, the host OS can now override all ACPI tables with
12656 one logical RSDP. Includes implementation of "typed" pointer
12657 support to allow a common data type for both physical and logical
12658 pointers internally. This required a change to the
12659 AcpiOsGetRootPointer interface.
12660
12661 Implemented the use of ACPI 2.0 Generic Address Structures for all
12662 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
12663 mapped I/O for these ACPI features.
12664
12665 Initialization now ignores not only non-required tables (All
12666 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
12667 not validate the table headers of unrecognized tables.
12668
12669 Fixed a problem where a notify handler could only be
12670 installed/removed on an object of type Device. All "notify"
12671
12672 objects are now supported -- Devices, Processor, Power, and
12673 Thermal.
12674
12675 Removed most verbosity from the ACPI_DB_INFO debug level. Only
12676 critical information is returned when this debug level is enabled.
12677
12678 Code and Data Size: Current core subsystem library sizes are shown
12679 below. These are the code and data sizes for the acpica.lib
12680 produced by the Microsoft Visual C++ 6.0 compiler, and these
12681 values do not include any ACPI driver or OSPM code. The debug
12682 version of the code includes the debug output trace mechanism and
12683 has a larger code and data size. Note that these values will vary
12684 depending on the efficiency of the compiler and the compiler
12685 options used during generation.
12686
12687 Previous Release
12688 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
12689 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
12690 Current Release:
12691 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
12692 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
12693
12694
12695 2) Linux:
12696
12697 The processor driver (acpi_processor.c) now fully supports ACPI
12698 2.0-based processor performance control (e.g. Intel(R)
12699 SpeedStep(TM) technology) Note that older laptops that only have
12700 the Intel "applet" interface are not supported through this. The
12701 'limit' and 'performance' interface (/proc) are fully functional.
12702 [Note that basic policy for controlling performance state
12703 transitions will be included in the next version of ospmd.] The
12704 idle handler was modified to more aggressively use C2, and PIIX4
12705 errata handling underwent a complete overhaul (big thanks to
12706 Dominik Brodowski).
12707
12708 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
12709 based devices in the ACPI namespace are now dynamically bound
12710 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
12711 This allows, among other things, ACPI to resolve bus numbers for
12712 subordinate PCI bridges.
12713
12714 Enhanced PCI IRQ routing to get the proper bus number for _PRT
12715 entries defined underneath PCI bridges.
12716
12717 Added IBM 600E to bad bios list due to invalid _ADR value for
12718 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
12719
12720 In the process of adding full MADT support (e.g. IOAPIC) for IA32
12721 (acpi.c, mpparse.c) -- stay tuned.
12722
12723 Added back visual differentiation between fixed-feature and
12724 control-method buttons in dmesg. Buttons are also subtyped (e.g.
12725 button/power/PWRF) to simplify button identification.
12726
12727 We no longer use -Wno-unused when compiling debug. Please ignore
12728 any "_THIS_MODULE defined but not used" messages.
12729
12730 Can now shut down the system using "magic sysrq" key.
12731
12732
12733 3) iASL Compiler version 2041:
12734
12735 Fixed a problem where conversion errors for hex/octal/decimal
12736 constants were not reported.
12737
12738 Implemented a fix for the General Register template Address field.
12739 This field was 8 bits when it should be 64.
12740
12741 Fixed a problem where errors/warnings were no longer being emitted
12742 within the listing output file.
12743
12744 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
12745 exactly 4 characters, alphanumeric only.
12746
12747
12748
12749
12750 ----------------------------------------
12751 Summary of changes for this release: 03_08_02
12752
12753
12754 1) ACPI CA Core Subsystem Version 20020308:
12755
12756 Fixed a problem with AML Fields where the use of the "AccessAny"
12757 keyword could cause an interpreter error due to attempting to read
12758 or write beyond the end of the parent Operation Region.
12759
12760 Fixed a problem in the SystemMemory Operation Region handler where
12761 an attempt was made to map memory beyond the end of the region.
12762 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
12763 errors on some Linux systems.
12764
12765 Fixed a problem where the interpreter/namespace "search to root"
12766 algorithm was not functioning for some object types. Relaxed the
12767 internal restriction on the search to allow upsearches for all
12768 external object types as well as most internal types.
12769
12770
12771 2) Linux:
12772
12773 We now use safe_halt() macro versus individual calls to sti | hlt.
12774
12775 Writing to the processor limit interface should now work. "echo 1"
12776 will increase the limit, 2 will decrease, and 0 will reset to the
12777
12778 default.
12779
12780
12781 3) ASL compiler:
12782
12783 Fixed segfault on Linux version.
12784
12785
12786 ----------------------------------------
12787 Summary of changes for this release: 02_25_02
12788
12789 1) ACPI CA Core Subsystem:
12790
12791
12792 Fixed a problem where the GPE bit masks were not initialized
12793 properly, causing erratic GPE behavior.
12794
12795 Implemented limited support for multiple calling conventions. The
12796 code can be generated with either the VPL (variable parameter
12797 list, or "C") convention, or the FPL (fixed parameter list, or
12798 "Pascal") convention. The core subsystem is about 3.4% smaller
12799 when generated with FPL.
12800
12801
12802 2) Linux
12803
12804 Re-add some /proc/acpi/event functionality that was lost during
12805 the rewrite
12806
12807 Resolved issue with /proc events for fixed-feature buttons showing
12808 up as the system device.
12809
12810 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
12811
12812 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
12813
12814 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
12815
12816 Fixed limit interface & usage to fix bugs with passive cooling
12817 hysterisis.
12818
12819 Restructured PRT support.
12820
12821
12822 ----------------------------------------
12823 Summary of changes for this label: 02_14_02
12824
12825
12826 1) ACPI CA Core Subsystem:
12827
12828 Implemented support in AcpiLoadTable to allow loading of FACS and
12829 FADT tables.
12830
12831 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
12832 been removed. All 64-bit platforms should be migrated to the ACPI
12833 2.0 tables. The actbl71.h header has been removed from the source
12834 tree.
12835
12836 All C macros defined within the subsystem have been prefixed with
12837 "ACPI_" to avoid collision with other system include files.
12838
12839 Removed the return value for the two AcpiOsPrint interfaces, since
12840 it is never used and causes lint warnings for ignoring the return
12841 value.
12842
12843 Added error checking to all internal mutex acquire and release
12844 calls. Although a failure from one of these interfaces is
12845 probably a fatal system error, these checks will cause the
12846 immediate abort of the currently executing method or interface.
12847
12848 Fixed a problem where the AcpiSetCurrentResources interface could
12849 fault. This was a side effect of the deployment of the new memory
12850 allocation model.
12851
12852 Fixed a couple of problems with the Global Lock support introduced
12853 in the last major build. The "common" (1.0/2.0) internal FACS was
12854 being overwritten with the FACS signature and clobbering the
12855 Global Lock pointer. Also, the actual firmware FACS was being
12856 unmapped after construction of the "common" FACS, preventing
12857 access to the actual Global Lock field within it. The "common"
12858 internal FACS is no longer installed as an actual ACPI table; it
12859 is used simply as a global.
12860
12861 Code and Data Size: Current core subsystem library sizes are shown
12862 below. These are the code and data sizes for the acpica.lib
12863 produced by the Microsoft Visual C++ 6.0 compiler, and these
12864 values do not include any ACPI driver or OSPM code. The debug
12865 version of the code includes the debug output trace mechanism and
12866 has a larger code and data size. Note that these values will vary
12867 depending on the efficiency of the compiler and the compiler
12868 options used during generation.
12869
12870 Previous Release (02_07_01)
12871 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
12872 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
12873 Current Release:
12874 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
12875 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
12876
12877
12878 2) Linux
12879
12880 Updated Linux-specific code for core macro and OSL interface
12881 changes described above.
12882
12883 Improved /proc/acpi/event. It now can be opened only once and has
12884 proper poll functionality.
12885
12886 Fixed and restructured power management (acpi_bus).
12887
12888 Only create /proc "view by type" when devices of that class exist.
12889
12890 Fixed "charging/discharging" bug (and others) in acpi_battery.
12891
12892 Improved thermal zone code.
12893
12894
12895 3) ASL Compiler, version X2039:
12896
12897
12898 Implemented the new compiler restriction on ASL String hex/octal
12899 escapes to non-null, ASCII values. An error results if an invalid
12900 value is used. (This will require an ACPI 2.0 specification
12901 change.)
12902
12903 AML object labels that are output to the optional C and ASM source
12904 are now prefixed with both the ACPI table signature and table ID
12905 to help guarantee uniqueness within a large BIOS project.
12906
12907
12908 ----------------------------------------
12909 Summary of changes for this label: 02_01_02
12910
12911 1) ACPI CA Core Subsystem:
12912
12913 ACPI 2.0 support is complete in the entire Core Subsystem and the
12914 ASL compiler. All new ACPI 2.0 operators are implemented and all
12915 other changes for ACPI 2.0 support are complete. With
12916 simultaneous code and data optimizations throughout the subsystem,
12917 ACPI 2.0 support has been implemented with almost no additional
12918 cost in terms of code and data size.
12919
12920 Implemented a new mechanism for allocation of return buffers. If
12921 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
12922 be allocated on behalf of the caller. Consolidated all return
12923 buffer validation and allocation to a common procedure. Return
12924 buffers will be allocated via the primary OSL allocation interface
12925 since it appears that a separate pool is not needed by most users.
12926 If a separate pool is required for these buffers, the caller can
12927 still use the original mechanism and pre-allocate the buffer(s).
12928
12929 Implemented support for string operands within the DerefOf
12930 operator.
12931
12932 Restructured the Hardware and Event managers to be table driven,
12933 simplifying the source code and reducing the amount of generated
12934 code.
12935
12936 Split the common read/write low-level ACPI register bitfield
12937 procedure into a separate read and write, simplifying the code
12938 considerably.
12939
12940 Obsoleted the AcpiOsCallocate OSL interface. This interface was
12941 used only a handful of times and didn't have enough critical mass
12942 for a separate interface. Replaced with a common calloc procedure
12943 in the core.
12944
12945 Fixed a reported problem with the GPE number mapping mechanism
12946 that allows GPE1 numbers to be non-contiguous with GPE0.
12947 Reorganized the GPE information and shrunk a large array that was
12948 originally large enough to hold info for all possible GPEs (256)
12949 to simply large enough to hold all GPEs up to the largest GPE
12950 number on the machine.
12951
12952 Fixed a reported problem with resource structure alignment on 64-
12953 bit platforms.
12954
12955 Changed the AcpiEnableEvent and AcpiDisableEvent external
12956 interfaces to not require any flags for the common case of
12957 enabling/disabling a GPE.
12958
12959 Implemented support to allow a "Notify" on a Processor object.
12960
12961 Most TBDs in comments within the source code have been resolved
12962 and eliminated.
12963
12964
12965 Fixed a problem in the interpreter where a standalone parent
12966 prefix (^) was not handled correctly in the interpreter and
12967 debugger.
12968
12969 Removed obsolete and unnecessary GPE save/restore code.
12970
12971 Implemented Field support in the ASL Load operator. This allows a
12972 table to be loaded from a named field, in addition to loading a
12973 table directly from an Operation Region.
12974
12975 Implemented timeout and handle support in the external Global Lock
12976 interfaces.
12977
12978 Fixed a problem in the AcpiDump utility where pathnames were no
12979 longer being generated correctly during the dump of named objects.
12980
12981 Modified the AML debugger to give a full display of if/while
12982 predicates instead of just one AML opcode at a time. (The
12983 predicate can have several nested ASL statements.) The old method
12984 was confusing during single stepping.
12985
12986 Code and Data Size: Current core subsystem library sizes are shown
12987 below. These are the code and data sizes for the acpica.lib
12988 produced by the Microsoft Visual C++ 6.0 compiler, and these
12989 values do not include any ACPI driver or OSPM code. The debug
12990 version of the code includes the debug output trace mechanism and
12991 has a larger code and data size. Note that these values will vary
12992 depending on the efficiency of the compiler and the compiler
12993 options used during generation.
12994
12995 Previous Release (12_18_01)
12996 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
12997 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
12998 Current Release:
12999 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
13000 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
13001
13002 2) Linux
13003
13004 Implemented fix for PIIX reverse throttling errata (Processor
13005 driver)
13006
13007 Added new Limit interface (Processor and Thermal drivers)
13008
13009 New thermal policy (Thermal driver)
13010
13011 Many updates to /proc
13012
13013 Battery "low" event support (Battery driver)
13014
13015 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
13016
13017 IA32 - IA64 initialization unification, no longer experimental
13018
13019 Menuconfig options redesigned
13020
13021 3) ASL Compiler, version X2037:
13022
13023 Implemented several new output features to simplify integration of
13024 AML code into firmware: 1) Output the AML in C source code with
13025 labels for each named ASL object. The original ASL source code
13026 is interleaved as C comments. 2) Output the AML in ASM source code
13027 with labels and interleaved ASL source. 3) Output the AML in
13028 raw hex table form, in either C or ASM.
13029
13030 Implemented support for optional string parameters to the
13031 LoadTable operator.
13032
13033 Completed support for embedded escape sequences within string
13034 literals. The compiler now supports all single character escapes
13035 as well as the Octal and Hex escapes. Note: the insertion of a
13036 null byte into a string literal (via the hex/octal escape) causes
13037 the string to be immediately terminated. A warning is issued.
13038
13039 Fixed a problem where incorrect AML was generated for the case
13040 where an ASL namepath consists of a single parent prefix (
13041
13042 ) with no trailing name segments.
13043
13044 The compiler has been successfully generated with a 64-bit C
13045 compiler.
13046
13047
13048
13049
13050 ----------------------------------------
13051 Summary of changes for this label: 12_18_01
13052
13053 1) Linux
13054
13055 Enhanced blacklist with reason and severity fields. Any table's
13056 signature may now be used to identify a blacklisted system.
13057
13058 Call _PIC control method to inform the firmware which interrupt
13059 model the OS is using. Turn on any disabled link devices.
13060
13061 Cleaned up busmgr /proc error handling (Andreas Dilger)
13062
13063 2) ACPI CA Core Subsystem:
13064
13065 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
13066 while loop)
13067
13068 Completed implementation of the ACPI 2.0 "Continue",
13069 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
13070 operators. All new ACPI 2.0 operators are now implemented in both
13071 the ASL compiler and the AML interpreter. The only remaining ACPI
13072 2.0 task is support for the String data type in the DerefOf
13073 operator. Fixed a problem with AcquireMutex where the status code
13074 was lost if the caller had to actually wait for the mutex.
13075
13076 Increased the maximum ASL Field size from 64K bits to 4G bits.
13077
13078 Completed implementation of the external Global Lock interfaces --
13079 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
13080 Handler parameters were added.
13081
13082 Completed another pass at removing warnings and issues when
13083 compiling with 64-bit compilers. The code now compiles cleanly
13084 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
13085 add and subtract (diff) macros have changed considerably.
13086
13087
13088 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
13089 64-bit platforms, 32-bits on all others. This type is used
13090 wherever memory allocation and/or the C sizeof() operator is used,
13091 and affects the OSL memory allocation interfaces AcpiOsAllocate
13092 and AcpiOsCallocate.
13093
13094 Implemented sticky user breakpoints in the AML debugger.
13095
13096 Code and Data Size: Current core subsystem library sizes are shown
13097 below. These are the code and data sizes for the acpica.lib
13098 produced by the Microsoft Visual C++ 6.0 compiler, and these
13099 values do not include any ACPI driver or OSPM code. The debug
13100 version of the code includes the debug output trace mechanism and
13101 has a larger code and data size. Note that these values will vary
13102 depending on the efficiency of the compiler and the compiler
13103 options used during generation.
13104
13105 Previous Release (12_05_01)
13106 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
13107 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
13108 Current Release:
13109 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
13110 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
13111
13112 3) ASL Compiler, version X2034:
13113
13114 Now checks for (and generates an error if detected) the use of a
13115 Break or Continue statement without an enclosing While statement.
13116
13117
13118 Successfully generated the compiler with the Intel 64-bit C
13119 compiler.
13120
13121 ----------------------------------------
13122 Summary of changes for this label: 12_05_01
13123
13124 1) ACPI CA Core Subsystem:
13125
13126 The ACPI 2.0 CopyObject operator is fully implemented. This
13127 operator creates a new copy of an object (and is also used to
13128 bypass the "implicit conversion" mechanism of the Store operator.)
13129
13130 The ACPI 2.0 semantics for the SizeOf operator are fully
13131 implemented. The change is that performing a SizeOf on a
13132 reference object causes an automatic dereference of the object to
13133 tha actual value before the size is evaluated. This behavior was
13134 undefined in ACPI 1.0.
13135
13136 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
13137 have been implemented. The interrupt polarity and mode are now
13138 independently set.
13139
13140 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
13141 appearing in Package objects were not properly converted to
13142 integers when the internal Package was converted to an external
13143 object (via the AcpiEvaluateObject interface.)
13144
13145 Fixed a problem with the namespace object deletion mechanism for
13146 objects created by control methods. There were two parts to this
13147 problem: 1) Objects created during the initialization phase method
13148 parse were not being deleted, and 2) The object owner ID mechanism
13149 to track objects was broken.
13150
13151 Fixed a problem where the use of the ASL Scope operator within a
13152 control method would result in an invalid opcode exception.
13153
13154 Fixed a problem introduced in the previous label where the buffer
13155 length required for the _PRT structure was not being returned
13156 correctly.
13157
13158 Code and Data Size: Current core subsystem library sizes are shown
13159 below. These are the code and data sizes for the acpica.lib
13160 produced by the Microsoft Visual C++ 6.0 compiler, and these
13161 values do not include any ACPI driver or OSPM code. The debug
13162 version of the code includes the debug output trace mechanism and
13163 has a larger code and data size. Note that these values will vary
13164 depending on the efficiency of the compiler and the compiler
13165 options used during generation.
13166
13167 Previous Release (11_20_01)
13168 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
13169 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
13170
13171 Current Release:
13172 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
13173 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
13174
13175 2) Linux:
13176
13177 Updated all files to apply cleanly against 2.4.16.
13178
13179 Added basic PCI Interrupt Routing Table (PRT) support for IA32
13180 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
13181 version supports both static and dyanmic PRT entries, but dynamic
13182 entries are treated as if they were static (not yet
13183 reconfigurable). Architecture- specific code to use this data is
13184 absent on IA32 but should be available shortly.
13185
13186 Changed the initialization sequence to start the ACPI interpreter
13187 (acpi_init) prior to initialization of the PCI driver (pci_init)
13188 in init/main.c. This ordering is required to support PRT and
13189 facilitate other (future) enhancement. A side effect is that the
13190 ACPI bus driver and certain device drivers can no longer be loaded
13191 as modules.
13192
13193 Modified the 'make menuconfig' options to allow PCI Interrupt
13194 Routing support to be included without the ACPI Bus and other
13195 device drivers.
13196
13197 3) ASL Compiler, version X2033:
13198
13199 Fixed some issues with the use of the new CopyObject and
13200 DataTableRegion operators. Both are fully functional.
13201
13202 ----------------------------------------
13203 Summary of changes for this label: 11_20_01
13204
13205 20 November 2001. Summary of changes for this release.
13206
13207 1) ACPI CA Core Subsystem:
13208
13209 Updated Index support to match ACPI 2.0 semantics. Storing a
13210 Integer, String, or Buffer to an Index of a Buffer will store only
13211 the least-significant byte of the source to the Indexed buffer
13212 byte. Multiple writes are not performed.
13213
13214 Fixed a problem where the access type used in an AccessAs ASL
13215 operator was not recorded correctly into the field object.
13216
13217 Fixed a problem where ASL Event objects were created in a
13218 signalled state. Events are now created in an unsignalled state.
13219
13220 The internal object cache is now purged after table loading and
13221 initialization to reduce the use of dynamic kernel memory -- on
13222 the assumption that object use is greatest during the parse phase
13223 of the entire table (versus the run-time use of individual control
13224 methods.)
13225
13226 ACPI 2.0 variable-length packages are now fully operational.
13227
13228 Code and Data Size: Code and Data optimizations have permitted new
13229 feature development with an actual reduction in the library size.
13230 Current core subsystem library sizes are shown below. These are
13231 the code and data sizes for the acpica.lib produced by the
13232 Microsoft Visual C++ 6.0 compiler, and these values do not include
13233 any ACPI driver or OSPM code. The debug version of the code
13234 includes the debug output trace mechanism and has a larger code
13235 and data size. Note that these values will vary depending on the
13236 efficiency of the compiler and the compiler options used during
13237 generation.
13238
13239 Previous Release (11_09_01):
13240 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
13241 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
13242
13243 Current Release:
13244 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
13245 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
13246
13247 2) Linux:
13248
13249 Enhanced the ACPI boot-time initialization code to allow the use
13250 of Local APIC tables for processor enumeration on IA-32, and to
13251 pave the way for a fully MPS-free boot (on SMP systems) in the
13252 near future. This functionality replaces
13253 arch/i386/kernel/acpitables.c, which was introduced in an earlier
13254 2.4.15-preX release. To enable this feature you must add
13255 "acpi_boot=on" to the kernel command line -- see the help entry
13256 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
13257 the works...
13258
13259 Restructured the configuration options to allow boot-time table
13260 parsing support without inclusion of the ACPI Interpreter (and
13261 other) code.
13262
13263 NOTE: This release does not include fixes for the reported events,
13264 power-down, and thermal passive cooling issues (coming soon).
13265
13266 3) ASL Compiler:
13267
13268 Added additional typechecking for Fields within restricted access
13269 Operation Regions. All fields within EC and CMOS regions must be
13270 declared with ByteAcc. All fields withing SMBus regions must be
13271 declared with the BufferAcc access type.
13272
13273 Fixed a problem where the listing file output of control methods
13274 no longer interleaved the actual AML code with the ASL source
13275 code.
13276
13277
13278
13279
13280 ----------------------------------------
13281 Summary of changes for this label: 11_09_01
13282
13283 1) ACPI CA Core Subsystem:
13284
13285 Implemented ACPI 2.0-defined support for writes to fields with a
13286 Buffer, String, or Integer source operand that is smaller than the
13287 target field. In these cases, the source operand is zero-extended
13288 to fill the target field.
13289
13290 Fixed a problem where a Field starting bit offset (within the
13291 parent operation region) was calculated incorrectly if the
13292
13293 alignment of the field differed from the access width. This
13294 affected CreateWordField, CreateDwordField, CreateQwordField, and
13295 possibly other fields that use the "AccessAny" keyword.
13296
13297 Fixed a problem introduced in the 11_02_01 release where indirect
13298 stores through method arguments did not operate correctly.
13299
13300 2) Linux:
13301
13302 Implemented boot-time ACPI table parsing support
13303 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
13304 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
13305 legacy BIOS interfaces (e.g. MPS) for the configuration of system
13306 processors, memory, and interrupts during setup_arch(). Note that
13307 this patch does not include the required architecture-specific
13308 changes required to apply this information -- subsequent patches
13309 will be posted for both IA32 and IA64 to achieve this.
13310
13311 Added low-level sleep support for IA32 platforms, courtesy of Pat
13312 Mochel. This allows IA32 systems to transition to/from various
13313 sleeping states (e.g. S1, S3), although the lack of a centralized
13314 driver model and power-manageable drivers will prevent its
13315 (successful) use on most systems.
13316
13317 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
13318 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
13319 tables" option, etc.
13320
13321 Increased the default timeout for the EC driver from 1ms to 10ms
13322 (1000 cycles of 10us) to try to address AE_TIME errors during EC
13323 transactions.
13324
13325 ----------------------------------------
13326 Summary of changes for this label: 11_02_01
13327
13328 1) ACPI CA Core Subsystem:
13329
13330 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
13331 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
13332 implemented.
13333
13334 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
13335 changes to support ACPI 2.0 Qword field access. Read/Write
13336 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
13337 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
13338 the value parameter for the address space handler interface is now
13339 an ACPI_INTEGER. OSL implementations of these interfaces must now
13340 handle the case where the Width parameter is 64.
13341
13342 Index Fields: Fixed a problem where unaligned bit assembly and
13343 disassembly for IndexFields was not supported correctly.
13344
13345 Index and Bank Fields: Nested Index and Bank Fields are now
13346 supported. During field access, a check is performed to ensure
13347 that the value written to an Index or Bank register is not out of
13348 the range of the register. The Index (or Bank) register is
13349 written before each access to the field data. Future support will
13350 include allowing individual IndexFields to be wider than the
13351 DataRegister width.
13352
13353 Fields: Fixed a problem where the AML interpreter was incorrectly
13354 attempting to write beyond the end of a Field/OpRegion. This was
13355 a boundary case that occurred when a DWORD field was written to a
13356 BYTE access OpRegion, forcing multiple writes and causing the
13357 interpreter to write one datum too many.
13358
13359 Fields: Fixed a problem with Field/OpRegion access where the
13360 starting bit address of a field was incorrectly calculated if the
13361 current access type was wider than a byte (WordAcc, DwordAcc, or
13362 QwordAcc).
13363
13364 Fields: Fixed a problem where forward references to individual
13365 FieldUnits (individual Field names within a Field definition) were
13366 not resolved during the AML table load.
13367
13368 Fields: Fixed a problem where forward references from a Field
13369 definition to the parent Operation Region definition were not
13370 resolved during the AML table load.
13371
13372 Fields: Duplicate FieldUnit names within a scope are now detected
13373 during AML table load.
13374
13375 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
13376 returned an incorrect name for the root node.
13377
13378 Code and Data Size: Code and Data optimizations have permitted new
13379 feature development with an actual reduction in the library size.
13380 Current core subsystem library sizes are shown below. These are
13381 the code and data sizes for the acpica.lib produced by the
13382 Microsoft Visual C++ 6.0 compiler, and these values do not include
13383 any ACPI driver or OSPM code. The debug version of the code
13384 includes the debug output trace mechanism and has a larger code
13385 and data size. Note that these values will vary depending on the
13386 efficiency of the compiler and the compiler options used during
13387 generation.
13388
13389 Previous Release (10_18_01):
13390 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
13391 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
13392
13393 Current Release:
13394 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
13395 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
13396
13397 2) Linux:
13398
13399 Improved /proc processor output (Pavel Machek) Re-added
13400 MODULE_LICENSE("GPL") to all modules.
13401
13402 3) ASL Compiler version X2030:
13403
13404 Duplicate FieldUnit names within a scope are now detected and
13405 flagged as errors.
13406
13407 4) Documentation:
13408
13409 Programmer Reference updated to reflect OSL and address space
13410 handler interface changes described above.
13411
13412 ----------------------------------------
13413 Summary of changes for this label: 10_18_01
13414
13415 ACPI CA Core Subsystem:
13416
13417 Fixed a problem with the internal object reference count mechanism
13418 that occasionally caused premature object deletion. This resolves
13419 all of the outstanding problem reports where an object is deleted
13420 in the middle of an interpreter evaluation. Although this problem
13421 only showed up in rather obscure cases, the solution to the
13422 problem involved an adjustment of all reference counts involving
13423 objects attached to namespace nodes.
13424
13425 Fixed a problem with Field support in the interpreter where
13426 writing to an aligned field whose length is an exact multiple (2
13427 or greater) of the field access granularity would cause an attempt
13428 to write beyond the end of the field.
13429
13430 The top level AML opcode execution functions within the
13431 interpreter have been renamed with a more meaningful and
13432 consistent naming convention. The modules exmonad.c and
13433 exdyadic.c were eliminated. New modules are exoparg1.c,
13434 exoparg2.c, exoparg3.c, and exoparg6.c.
13435
13436 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
13437
13438 Fixed a problem where the AML debugger was causing some internal
13439 objects to not be deleted during subsystem termination.
13440
13441 Fixed a problem with the external AcpiEvaluateObject interface
13442 where the subsystem would fault if the named object to be
13443 evaluated refered to a constant such as Zero, Ones, etc.
13444
13445 Fixed a problem with IndexFields and BankFields where the
13446 subsystem would fault if the index, data, or bank registers were
13447 not defined in the same scope as the field itself.
13448
13449 Added printf format string checking for compilers that support
13450 this feature. Corrected more than 50 instances of issues with
13451 format specifiers within invocations of ACPI_DEBUG_PRINT
13452 throughout the core subsystem code.
13453
13454 The ASL "Revision" operator now returns the ACPI support level
13455 implemented in the core - the value "2" since the ACPI 2.0 support
13456 is more than 50% implemented.
13457
13458 Enhanced the output of the AML debugger "dump namespace" command
13459 to output in a more human-readable form.
13460
13461 Current core subsystem library code sizes are shown below. These
13462
13463 are the code and data sizes for the acpica.lib produced by the
13464 Microsoft Visual C++ 6.0 compiler, and these values do not include
13465 any ACPI driver or OSPM code. The debug version of the code
13466 includes the full debug trace mechanism -- leading to a much
13467
13468 larger code and data size. Note that these values will vary
13469 depending on the efficiency of the compiler and the compiler
13470 options used during generation.
13471
13472 Previous Label (09_20_01):
13473 Non-Debug Version: 65K Code, 5K Data, 70K Total
13474 Debug Version: 138K Code, 58K Data, 196K Total
13475
13476 This Label:
13477
13478 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
13479 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
13480
13481 Linux:
13482
13483 Implemented a "Bad BIOS Blacklist" to track machines that have
13484 known ASL/AML problems.
13485
13486 Enhanced the /proc interface for the thermal zone driver and added
13487 support for _HOT (the critical suspend trip point). The 'info'
13488 file now includes threshold/policy information, and allows setting
13489 of _SCP (cooling preference) and _TZP (polling frequency) values
13490 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
13491 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
13492 preference to the passive/quiet mode (if supported by the ASL).
13493
13494 Implemented a workaround for a gcc bug that resuted in an OOPs
13495 when loading the control method battery driver.
13496
13497 ----------------------------------------
13498 Summary of changes for this label: 09_20_01
13499
13500 ACPI CA Core Subsystem:
13501
13502 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
13503 modified to allow individual GPE levels to be flagged as wake-
13504 enabled (i.e., these GPEs are to remain enabled when the platform
13505 sleeps.)
13506
13507 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
13508 support wake-enabled GPEs. This means that upon entering the
13509 sleep state, all GPEs that are not wake-enabled are disabled.
13510 When leaving the sleep state, these GPEs are reenabled.
13511
13512 A local double-precision divide/modulo module has been added to
13513 enhance portability to OS kernels where a 64-bit math library is
13514 not available. The new module is "utmath.c".
13515
13516 Several optimizations have been made to reduce the use of CPU
13517 stack. Originally over 2K, the maximum stack usage is now below
13518 2K at 1860 bytes (1.82k)
13519
13520 Fixed a problem with the AcpiGetFirmwareTable interface where the
13521 root table pointer was not mapped into a logical address properly.
13522
13523 Fixed a problem where a NULL pointer was being dereferenced in the
13524 interpreter code for the ASL Notify operator.
13525
13526 Fixed a problem where the use of the ASL Revision operator
13527 returned an error. This operator now returns the current version
13528 of the ACPI CA core subsystem.
13529
13530 Fixed a problem where objects passed as control method parameters
13531 to AcpiEvaluateObject were always deleted at method termination.
13532 However, these objects may end up being stored into the namespace
13533 by the called method. The object reference count mechanism was
13534 applied to these objects instead of a force delete.
13535
13536 Fixed a problem where static strings or buffers (contained in the
13537 AML code) that are declared as package elements within the ASL
13538 code could cause a fault because the interpreter would attempt to
13539 delete them. These objects are now marked with the "static
13540 object" flag to prevent any attempt to delete them.
13541
13542 Implemented an interpreter optimization to use operands directly
13543 from the state object instead of extracting the operands to local
13544 variables. This reduces stack use and code size, and improves
13545 performance.
13546
13547 The module exxface.c was eliminated as it was an unnecessary extra
13548 layer of code.
13549
13550 Current core subsystem library code sizes are shown below. These
13551 are the code and data sizes for the acpica.lib produced by the
13552 Microsoft Visual C++ 6.0 compiler, and these values do not include
13553 any ACPI driver or OSPM code. The debug version of the code
13554 includes the full debug trace mechanism -- leading to a much
13555 larger code and data size. Note that these values will vary
13556 depending on the efficiency of the compiler and the compiler
13557 options used during generation.
13558
13559 Non-Debug Version: 65K Code, 5K Data, 70K Total
13560 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
13561 Total (Previously 195K)
13562
13563 Linux:
13564
13565 Support for ACPI 2.0 64-bit integers has been added. All ACPI
13566 Integer objects are now 64 bits wide
13567
13568 All Acpi data types and structures are now in lower case. Only
13569 Acpi macros are upper case for differentiation.
13570
13571 Documentation:
13572
13573 Changes to the external interfaces as described above.
13574
13575 ----------------------------------------
13576 Summary of changes for this label: 08_31_01
13577
13578 ACPI CA Core Subsystem:
13579
13580 A bug with interpreter implementation of the ASL Divide operator
13581 was found and fixed. The implicit function return value (not the
13582 explicit store operands) was returning the remainder instead of
13583 the quotient. This was a longstanding bug and it fixes several
13584 known outstanding issues on various platforms.
13585
13586 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
13587 been further optimized for size. There are 700 invocations of the
13588 DEBUG_PRINT macro alone, so each optimization reduces the size of
13589 the debug version of the subsystem significantly.
13590
13591 A stack trace mechanism has been implemented. The maximum stack
13592 usage is about 2K on 32-bit platforms. The debugger command "stat
13593 stack" will display the current maximum stack usage.
13594
13595 All public symbols and global variables within the subsystem are
13596 now prefixed with the string "Acpi". This keeps all of the
13597 symbols grouped together in a kernel map, and avoids conflicts
13598 with other kernel subsystems.
13599
13600 Most of the internal fixed lookup tables have been moved into the
13601 code segment via the const operator.
13602
13603 Several enhancements have been made to the interpreter to both
13604 reduce the code size and improve performance.
13605
13606 Current core subsystem library code sizes are shown below. These
13607 are the code and data sizes for the acpica.lib produced by the
13608 Microsoft Visual C++ 6.0 compiler, and these values do not include
13609 any ACPI driver or OSPM code. The debug version of the code
13610 includes the full debug trace mechanism which contains over 700
13611 invocations of the DEBUG_PRINT macro, 500 function entry macro
13612 invocations, and over 900 function exit macro invocations --
13613 leading to a much larger code and data size. Note that these
13614 values will vary depending on the efficiency of the compiler and
13615 the compiler options used during generation.
13616
13617 Non-Debug Version: 64K Code, 5K Data, 69K Total
13618 Debug Version: 137K Code, 58K Data, 195K Total
13619
13620 Linux:
13621
13622 Implemented wbinvd() macro, pending a kernel-wide definition.
13623
13624 Fixed /proc/acpi/event to handle poll() and short reads.
13625
13626 ASL Compiler, version X2026:
13627
13628 Fixed a problem introduced in the previous label where the AML
13629
13630 code emitted for package objects produced packages with zero
13631 length.
13632
13633 ----------------------------------------
13634 Summary of changes for this label: 08_16_01
13635
13636 ACPI CA Core Subsystem:
13637
13638 The following ACPI 2.0 ASL operators have been implemented in the
13639 AML interpreter (These are already supported by the Intel ASL
13640 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
13641 ToBuffer. Support for 64-bit AML constants is implemented in the
13642 AML parser, debugger, and disassembler.
13643
13644 The internal memory tracking mechanism (leak detection code) has
13645 been upgraded to reduce the memory overhead (a separate tracking
13646 block is no longer allocated for each memory allocation), and now
13647 supports all of the internal object caches.
13648
13649 The data structures and code for the internal object caches have
13650 been coelesced and optimized so that there is a single cache and
13651 memory list data structure and a single group of functions that
13652 implement generic cache management. This has reduced the code
13653 size in both the debug and release versions of the subsystem.
13654
13655 The DEBUG_PRINT macro(s) have been optimized for size and replaced
13656 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
13657 different, because it generates a single call to an internal
13658 function. This results in a savings of about 90 bytes per
13659 invocation, resulting in an overall code and data savings of about
13660 16% in the debug version of the subsystem.
13661
13662 Linux:
13663
13664 Fixed C3 disk corruption problems and re-enabled C3 on supporting
13665 machines.
13666
13667 Integrated low-level sleep code by Patrick Mochel.
13668
13669 Further tweaked source code Linuxization.
13670
13671 Other minor fixes.
13672
13673 ASL Compiler:
13674
13675 Support for ACPI 2.0 variable length packages is fixed/completed.
13676
13677 Fixed a problem where the optional length parameter for the ACPI
13678 2.0 ToString operator.
13679
13680 Fixed multiple extraneous error messages when a syntax error is
13681 detected within the declaration line of a control method.
13682
13683 ----------------------------------------
13684 Summary of changes for this label: 07_17_01
13685
13686 ACPI CA Core Subsystem:
13687
13688 Added a new interface named AcpiGetFirmwareTable to obtain any
13689 ACPI table via the ACPI signature. The interface can be called at
13690 any time during kernel initialization, even before the kernel
13691 virtual memory manager is initialized and paging is enabled. This
13692 allows kernel subsystems to obtain ACPI tables very early, even
13693 before the ACPI CA subsystem is initialized.
13694
13695 Fixed a problem where Fields defined with the AnyAcc attribute
13696 could be resolved to the incorrect address under the following
13697 conditions: 1) the field width is larger than 8 bits and 2) the
13698 parent operation region is not defined on a DWORD boundary.
13699
13700 Fixed a problem where the interpreter is not being locked during
13701 namespace initialization (during execution of the _INI control
13702 methods), causing an error when an attempt is made to release it
13703 later.
13704
13705 ACPI 2.0 support in the AML Interpreter has begun and will be
13706 ongoing throughout the rest of this year. In this label, The Mod
13707 operator is implemented.
13708
13709 Added a new data type to contain full PCI addresses named
13710 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
13711 and Function values.
13712
13713 Linux:
13714
13715 Enhanced the Linux version of the source code to change most
13716 capitalized ACPI type names to lowercase. For example, all
13717 instances of ACPI_STATUS are changed to acpi_status. This will
13718 result in a large diff, but the change is strictly cosmetic and
13719 aligns the CA code closer to the Linux coding standard.
13720
13721 OSL Interfaces:
13722
13723 The interfaces to the PCI configuration space have been changed to
13724 add the PCI Segment number and to split the single 32-bit combined
13725 DeviceFunction field into two 16-bit fields. This was
13726 accomplished by moving the four values that define an address in
13727 PCI configuration space (segment, bus, device, and function) to
13728 the new ACPI_PCI_ID structure.
13729
13730 The changes to the PCI configuration space interfaces led to a
13731 reexamination of the complete set of address space access
13732 interfaces for PCI, I/O, and Memory. The previously existing 18
13733 interfaces have proven difficult to maintain (any small change
13734 must be propagated across at least 6 interfaces) and do not easily
13735 allow for future expansion to 64 bits if necessary. Also, on some
13736 systems, it would not be appropriate to demultiplex the access
13737 width (8, 16, 32,or 64) before calling the OSL if the
13738 corresponding native OS interfaces contain a similar access width
13739 parameter. For these reasons, the 18 address space interfaces
13740 have been replaced by these 6 new ones:
13741
13742 AcpiOsReadPciConfiguration
13743 AcpiOsWritePciConfiguration
13744 AcpiOsReadMemory
13745 AcpiOsWriteMemory
13746 AcpiOsReadPort
13747 AcpiOsWritePort
13748
13749 Added a new interface named AcpiOsGetRootPointer to allow the OSL
13750 to perform the platform and/or OS-specific actions necessary to
13751 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
13752 interface will simply call down to the CA core to perform the low-
13753 memory search for the table. On IA-64, the RSDP is obtained from
13754 EFI. Migrating this interface to the OSL allows the CA core to
13755
13756 remain OS and platform independent.
13757
13758 Added a new interface named AcpiOsSignal to provide a generic
13759 "function code and pointer" interface for various miscellaneous
13760 signals and notifications that must be made to the host OS. The
13761 first such signals are intended to support the ASL Fatal and
13762 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
13763 interface has been obsoleted.
13764
13765 The definition of the AcpiFormatException interface has been
13766 changed to simplify its use. The caller no longer must supply a
13767 buffer to the call; A pointer to a const string is now returned
13768 directly. This allows the call to be easily used in printf
13769 statements, etc. since the caller does not have to manage a local
13770 buffer.
13771
13772
13773 ASL Compiler, Version X2025:
13774
13775 The ACPI 2.0 Switch/Case/Default operators have been implemented
13776 and are fully functional. They will work with all ACPI 1.0
13777 interpreters, since the operators are simply translated to If/Else
13778 pairs.
13779
13780 The ACPI 2.0 ElseIf operator is implemented and will also work
13781 with 1.0 interpreters, for the same reason.
13782
13783 Implemented support for ACPI 2.0 variable-length packages. These
13784 packages have a separate opcode, and their size is determined by
13785 the interpreter at run-time.
13786
13787 Documentation The ACPI CA Programmer Reference has been updated to
13788 reflect the new interfaces and changes to existing interfaces.
13789
13790 ------------------------------------------
13791 Summary of changes for this label: 06_15_01
13792
13793 ACPI CA Core Subsystem:
13794
13795 Fixed a problem where a DWORD-accessed field within a Buffer
13796 object would get its byte address inadvertently rounded down to
13797 the nearest DWORD. Buffers are always Byte-accessible.
13798
13799 ASL Compiler, version X2024:
13800
13801 Fixed a problem where the Switch() operator would either fault or
13802 hang the compiler. Note however, that the AML code for this ACPI
13803 2.0 operator is not yet implemented.
13804
13805 Compiler uses the new AcpiOsGetTimer interface to obtain compile
13806 timings.
13807
13808 Implementation of the CreateField operator automatically converts
13809 a reference to a named field within a resource descriptor from a
13810 byte offset to a bit offset if required.
13811
13812 Added some missing named fields from the resource descriptor
13813 support. These are the names that are automatically created by the
13814 compiler to reference fields within a descriptor. They are only
13815 valid at compile time and are not passed through to the AML
13816 interpreter.
13817
13818 Resource descriptor named fields are now typed as Integers and
13819 subject to compile-time typechecking when used in expressions.
13820
13821 ------------------------------------------
13822 Summary of changes for this label: 05_18_01
13823
13824 ACPI CA Core Subsystem:
13825
13826 Fixed a couple of problems in the Field support code where bits
13827 from adjacent fields could be returned along with the proper field
13828 bits. Restructured the field support code to improve performance,
13829 readability and maintainability.
13830
13831 New DEBUG_PRINTP macro automatically inserts the procedure name
13832 into the output, saving hundreds of copies of procedure name
13833 strings within the source, shrinking the memory footprint of the
13834 debug version of the core subsystem.
13835
13836 Source Code Structure:
13837
13838 The source code directory tree was restructured to reflect the
13839 current organization of the component architecture. Some files
13840 and directories have been moved and/or renamed.
13841
13842 Linux:
13843
13844 Fixed leaking kacpidpc processes.
13845
13846 Fixed queueing event data even when /proc/acpi/event is not
13847 opened.
13848
13849 ASL Compiler, version X2020:
13850
13851 Memory allocation performance enhancement - over 24X compile time
13852 improvement on large ASL files. Parse nodes and namestring
13853 buffers are now allocated from a large internal compiler buffer.
13854
13855 The temporary .SRC file is deleted unless the "-s" option is
13856 specified
13857
13858 The "-d" debug output option now sends all output to the .DBG file
13859 instead of the console.
13860
13861 "External" second parameter is now optional
13862
13863 "ElseIf" syntax now properly allows the predicate
13864
13865 Last operand to "Load" now recognized as a Target operand
13866
13867 Debug object can now be used anywhere as a normal object.
13868
13869 ResourceTemplate now returns an object of type BUFFER
13870
13871 EISAID now returns an object of type INTEGER
13872
13873 "Index" now works with a STRING operand
13874
13875 "LoadTable" now accepts optional parameters
13876
13877 "ToString" length parameter is now optional
13878
13879 "Interrupt (ResourceType," parse error fixed.
13880
13881 "Register" with a user-defined region space parse error fixed
13882
13883 Escaped backslash at the end of a string ("\\") scan/parse error
13884 fixed
13885
13886 "Revision" is now an object of type INTEGER.
13887
13888
13889
13890 ------------------------------------------
13891 Summary of changes for this label: 05_02_01
13892
13893 Linux:
13894
13895 /proc/acpi/event now blocks properly.
13896
13897 Removed /proc/sys/acpi. You can still dump your DSDT from
13898 /proc/acpi/dsdt.
13899
13900 ACPI CA Core Subsystem:
13901
13902 Fixed a problem introduced in the previous label where some of the
13903 "small" resource descriptor types were not recognized.
13904
13905 Improved error messages for the case where an ASL Field is outside
13906 the range of the parent operation region.
13907
13908 ASL Compiler, version X2018:
13909
13910
13911 Added error detection for ASL Fields that extend beyond the length
13912 of the parent operation region (only if the length of the region
13913 is known at compile time.) This includes fields that have a
13914 minimum access width that is smaller than the parent region, and
13915 individual field units that are partially or entirely beyond the
13916 extent of the parent.
13917
13918
13919
13920 ------------------------------------------
13921 Summary of changes for this label: 04_27_01
13922
13923 ACPI CA Core Subsystem:
13924
13925 Fixed a problem where the namespace mutex could be released at the
13926 wrong time during execution of AcpiRemoveAddressSpaceHandler.
13927
13928 Added optional thread ID output for debug traces, to simplify
13929 debugging of multiple threads. Added context switch notification
13930 when the debug code realizes that a different thread is now
13931 executing ACPI code.
13932
13933 Some additional external data types have been prefixed with the
13934 string "ACPI_" for consistency. This may effect existing code.
13935 The data types affected are the external callback typedefs - e.g.,
13936
13937 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
13938
13939 Linux:
13940
13941 Fixed an issue with the OSL semaphore implementation where a
13942 thread was waking up with an error from receiving a SIGCHLD
13943 signal.
13944
13945 Linux version of ACPI CA now uses the system C library for string
13946 manipulation routines instead of a local implementation.
13947
13948 Cleaned up comments and removed TBDs.
13949
13950 ASL Compiler, version X2017:
13951
13952 Enhanced error detection and reporting for all file I/O
13953 operations.
13954
13955 Documentation:
13956
13957 Programmer Reference updated to version 1.06.
13958
13959
13960
13961 ------------------------------------------
13962 Summary of changes for this label: 04_13_01
13963
13964 ACPI CA Core Subsystem:
13965
13966 Restructured support for BufferFields and RegionFields.
13967 BankFields support is now fully operational. All known 32-bit
13968 limitations on field sizes have been removed. Both BufferFields
13969 and (Operation) RegionFields are now supported by the same field
13970 management code.
13971
13972 Resource support now supports QWORD address and IO resources. The
13973 16/32/64 bit address structures and the Extended IRQ structure
13974 have been changed to properly handle Source Resource strings.
13975
13976 A ThreadId of -1 is now used to indicate a "mutex not acquired"
13977 condition internally and must never be returned by AcpiOsThreadId.
13978 This reserved value was changed from 0 since Unix systems allow a
13979 thread ID of 0.
13980
13981 Linux:
13982
13983 Driver code reorganized to enhance portability
13984
13985 Added a kernel configuration option to control ACPI_DEBUG
13986
13987 Fixed the EC driver to honor _GLK.
13988
13989 ASL Compiler, version X2016:
13990
13991 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
13992 address space was set to 0, not 0x7f as it should be.
13993
13994 ------------------------------------------
13995 Summary of changes for this label: 03_13_01
13996
13997 ACPI CA Core Subsystem:
13998
13999 During ACPI initialization, the _SB_._INI method is now run if
14000 present.
14001
14002 Notify handler fix - notifies are deferred until the parent method
14003 completes execution. This fixes the "mutex already acquired"
14004 issue seen occasionally.
14005
14006 Part of the "implicit conversion" rules in ACPI 2.0 have been
14007 found to cause compatibility problems with existing ASL/AML. The
14008 convert "result-to-target-type" implementation has been removed
14009 for stores to method Args and Locals. Source operand conversion
14010 is still fully implemented. Possible changes to ACPI 2.0
14011 specification pending.
14012
14013 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
14014 length.
14015
14016 Fix for compiler warnings for 64-bit compiles.
14017
14018 Linux:
14019
14020 /proc output aligned for easier parsing.
14021
14022 Release-version compile problem fixed.
14023
14024 New kernel configuration options documented in Configure.help.
14025
14026 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
14027 context" message.
14028
14029 OSPM:
14030
14031 Power resource driver integrated with bus manager.
14032
14033 Fixed kernel fault during active cooling for thermal zones.
14034
14035 Source Code:
14036
14037 The source code tree has been restructured.
14038
14039
14040
14041 ------------------------------------------
14042 Summary of changes for this label: 03_02_01
14043
14044 Linux OS Services Layer (OSL):
14045
14046 Major revision of all Linux-specific code.
14047
14048 Modularized all ACPI-specific drivers.
14049
14050 Added new thermal zone and power resource drivers.
14051
14052 Revamped /proc interface (new functionality is under /proc/acpi).
14053
14054 New kernel configuration options.
14055
14056 Linux known issues:
14057
14058 New kernel configuration options not documented in Configure.help
14059 yet.
14060
14061
14062 Module dependencies not currently implemented. If used, they
14063 should be loaded in this order: busmgr, power, ec, system,
14064 processor, battery, ac_adapter, button, thermal.
14065
14066 Modules will not load if CONFIG_MODVERSION is set.
14067
14068 IBM 600E - entering S5 may reboot instead of shutting down.
14069
14070 IBM 600E - Sleep button may generate "Invalid <NULL> context"
14071 message.
14072
14073 Some systems may fail with "execution mutex already acquired"
14074 message.
14075
14076 ACPI CA Core Subsystem:
14077
14078 Added a new OSL Interface, AcpiOsGetThreadId. This was required
14079 for the deadlock detection code. Defined to return a non-zero, 32-
14080 bit thread ID for the currently executing thread. May be a non-
14081 zero constant integer on single-thread systems.
14082
14083 Implemented deadlock detection for internal subsystem mutexes. We
14084 may add conditional compilation for this code (debug only) later.
14085
14086 ASL/AML Mutex object semantics are now fully supported. This
14087 includes multiple acquires/releases by owner and support for the
14088
14089 Mutex SyncLevel parameter.
14090
14091 A new "Force Release" mechanism automatically frees all ASL
14092 Mutexes that have been acquired but not released when a thread
14093 exits the interpreter. This forces conformance to the ACPI spec
14094 ("All mutexes must be released when an invocation exits") and
14095 prevents deadlocked ASL threads. This mechanism can be expanded
14096 (later) to monitor other resource acquisitions if OEM ASL code
14097 continues to misbehave (which it will).
14098
14099 Several new ACPI exception codes have been added for the Mutex
14100 support.
14101
14102 Recursive method calls are now allowed and supported (the ACPI
14103 spec does in fact allow recursive method calls.) The number of
14104 recursive calls is subject to the restrictions imposed by the
14105 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
14106 parameter.
14107
14108 Implemented support for the SyncLevel parameter for control
14109 methods (ACPI 2.0 feature)
14110
14111 Fixed a deadlock problem when multiple threads attempted to use
14112 the interpreter.
14113
14114 Fixed a problem where the string length of a String package
14115 element was not always set in a package returned from
14116 AcpiEvaluateObject.
14117
14118 Fixed a problem where the length of a String package element was
14119 not always included in the length of the overall package returned
14120 from AcpiEvaluateObject.
14121
14122 Added external interfaces (Acpi*) to the ACPI debug memory
14123 manager. This manager keeps a list of all outstanding
14124 allocations, and can therefore detect memory leaks and attempts to
14125 free memory blocks more than once. Useful for code such as the
14126 power manager, etc. May not be appropriate for device drivers.
14127 Performance with the debug code enabled is slow.
14128
14129 The ACPI Global Lock is now an optional hardware element.
14130
14131 ASL Compiler Version X2015:
14132
14133 Integrated changes to allow the compiler to be generated on
14134 multiple platforms.
14135
14136 Linux makefile added to generate the compiler on Linux
14137
14138 Source Code:
14139
14140 All platform-specific headers have been moved to their own
14141 subdirectory, Include/Platform.
14142
14143 New source file added, Interpreter/ammutex.c
14144
14145 New header file, Include/acstruct.h
14146
14147 Documentation:
14148
14149 The programmer reference has been updated for the following new
14150 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
14151
14152 ------------------------------------------
14153 Summary of changes for this label: 02_08_01
14154
14155 Core ACPI CA Subsystem: Fixed a problem where an error was
14156 incorrectly returned if the return resource buffer was larger than
14157 the actual data (in the resource interfaces).
14158
14159 References to named objects within packages are resolved to the
14160
14161 full pathname string before packages are returned directly (via
14162 the AcpiEvaluateObject interface) or indirectly via the resource
14163 interfaces.
14164
14165 Linux OS Services Layer (OSL):
14166
14167 Improved /proc battery interface.
14168
14169
14170 Added C-state debugging output and other miscellaneous fixes.
14171
14172 ASL Compiler Version X2014:
14173
14174 All defined method arguments can now be used as local variables,
14175 including the ones that are not actually passed in as parameters.
14176 The compiler tracks initialization of the arguments and issues an
14177 exception if they are used without prior assignment (just like
14178 locals).
14179
14180 The -o option now specifies a filename prefix that is used for all
14181 output files, including the AML output file. Otherwise, the
14182 default behavior is as follows: 1) the AML goes to the file
14183 specified in the DSDT. 2) all other output files use the input
14184 source filename as the base.
14185
14186 ------------------------------------------
14187 Summary of changes for this label: 01_25_01
14188
14189 Core ACPI CA Subsystem: Restructured the implementation of object
14190 store support within the interpreter. This includes support for
14191 the Store operator as well as any ASL operators that include a
14192 target operand.
14193
14194 Partially implemented support for Implicit Result-to-Target
14195 conversion. This is when a result object is converted on the fly
14196 to the type of an existing target object. Completion of this
14197 support is pending further analysis of the ACPI specification
14198 concerning this matter.
14199
14200 CPU-specific code has been removed from the subsystem (hardware
14201 directory).
14202
14203 New Power Management Timer functions added
14204
14205 Linux OS Services Layer (OSL): Moved system state transition code
14206 to the core, fixed it, and modified Linux OSL accordingly.
14207
14208 Fixed C2 and C3 latency calculations.
14209
14210
14211 We no longer use the compilation date for the version message on
14212 initialization, but retrieve the version from AcpiGetSystemInfo().
14213
14214 Incorporated for fix Sony VAIO machines.
14215
14216 Documentation: The Programmer Reference has been updated and
14217 reformatted.
14218
14219
14220 ASL Compiler: Version X2013: Fixed a problem where the line
14221 numbering and error reporting could get out of sync in the
14222 presence of multiple include files.
14223
14224 ------------------------------------------
14225 Summary of changes for this label: 01_15_01
14226
14227 Core ACPI CA Subsystem:
14228
14229 Implemented support for type conversions in the execution of the
14230 ASL Concatenate operator (The second operand is converted to
14231 match the type of the first operand before concatenation.)
14232
14233 Support for implicit source operand conversion is partially
14234 implemented. The ASL source operand types Integer, Buffer, and
14235 String are freely interchangeable for most ASL operators and are
14236 converted by the interpreter on the fly as required. Implicit
14237 Target operand conversion (where the result is converted to the
14238 target type before storing) is not yet implemented.
14239
14240 Support for 32-bit and 64-bit BCD integers is implemented.
14241
14242 Problem fixed where a field read on an aligned field could cause a
14243 read past the end of the field.
14244
14245 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
14246 does not return a value, but the caller expects one. (The ASL
14247 compiler flags this as a warning.)
14248
14249 ASL Compiler:
14250
14251 Version X2011:
14252 1. Static typechecking of all operands is implemented. This
14253 prevents the use of invalid objects (such as using a Package where
14254 an Integer is required) at compile time instead of at interpreter
14255 run-time.
14256 2. The ASL source line is printed with ALL errors and warnings.
14257 3. Bug fix for source EOF without final linefeed.
14258 4. Debug option is split into a parse trace and a namespace trace.
14259 5. Namespace output option (-n) includes initial values for
14260 integers and strings.
14261 6. Parse-only option added for quick syntax checking.
14262 7. Compiler checks for duplicate ACPI name declarations
14263
14264 Version X2012:
14265 1. Relaxed typechecking to allow interchangeability between
14266 strings, integers, and buffers. These types are now converted by
14267 the interpreter at runtime.
14268 2. Compiler reports time taken by each internal subsystem in the
14269 debug output file.
14270
14271
14272 ------------------------------------------
14273 Summary of changes for this label: 12_14_00
14274
14275 ASL Compiler:
14276
14277 This is the first official release of the compiler. Since the
14278 compiler requires elements of the Core Subsystem, this label
14279 synchronizes everything.
14280
14281 ------------------------------------------
14282 Summary of changes for this label: 12_08_00
14283
14284
14285 Fixed a problem where named references within the ASL definition
14286 of both OperationRegions and CreateXXXFields did not work
14287 properly. The symptom was an AE_AML_OPERAND_TYPE during
14288 initialization of the region/field. This is similar (but not
14289 related internally) to the problem that was fixed in the last
14290 label.
14291
14292 Implemented both 32-bit and 64-bit support for the BCD ASL
14293 functions ToBCD and FromBCD.
14294
14295 Updated all legal headers to include "2000" in the copyright
14296 years.
14297
14298 ------------------------------------------
14299 Summary of changes for this label: 12_01_00
14300
14301 Fixed a problem where method invocations within the ASL definition
14302 of both OperationRegions and CreateXXXFields did not work
14303 properly. The symptom was an AE_AML_OPERAND_TYPE during
14304 initialization of the region/field:
14305
14306 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
14307 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
14308 (0x3005)
14309
14310 Fixed a problem where operators with more than one nested
14311 subexpression would fail. The symptoms were varied, by mostly
14312 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
14313 problem that has gone unnoticed until now.
14314
14315 Subtract (Add (1,2), Multiply (3,4))
14316
14317 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
14318 previous build (The prefix part of a relative path was handled
14319 incorrectly).
14320
14321 Fixed a problem where Operation Region initialization failed if
14322 the operation region name was a "namepath" instead of a simple
14323 "nameseg". Symptom was an AE_NO_OPERAND error.
14324
14325 Fixed a problem where an assignment to a local variable via the
14326 indirect RefOf mechanism only worked for the first such
14327 assignment. Subsequent assignments were ignored.
14328
14329 ------------------------------------------
14330 Summary of changes for this label: 11_15_00
14331
14332 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
14333 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
14334 the AML interpreter does NOT have support for the new 2.0 ASL
14335 grammar terms at this time.
14336
14337 All ACPI hardware access is via the GAS structures in the ACPI 2.0
14338 FADT.
14339
14340 All physical memory addresses across all platforms are now 64 bits
14341 wide. Logical address width remains dependent on the platform
14342 (i.e., "void *").
14343
14344 AcpiOsMapMemory interface changed to a 64-bit physical address.
14345
14346 The AML interpreter integer size is now 64 bits, as per the ACPI
14347 2.0 specification.
14348
14349 For backwards compatibility with ACPI 1.0, ACPI tables with a
14350 revision number less than 2 use 32-bit integers only.
14351
14352 Fixed a problem where the evaluation of OpRegion operands did not
14353 always resolve them to numbers properly.
14354
14355 ------------------------------------------
14356 Summary of changes for this label: 10_20_00
14357
14358 Fix for CBN_._STA issue. This fix will allow correct access to
14359 CBN_ OpRegions when the _STA returns 0x8.
14360
14361 Support to convert ACPI constants (Ones, Zeros, One) to actual
14362 values before a package object is returned
14363
14364 Fix for method call as predicate to if/while construct causing
14365 incorrect if/while behavior
14366
14367 Fix for Else block package lengths sometimes calculated wrong (if
14368 block > 63 bytes)
14369
14370 Fix for Processor object length field, was always zero
14371
14372 Table load abort if FACP sanity check fails
14373
14374 Fix for problem with Scope(name) if name already exists
14375
14376 Warning emitted if a named object referenced cannot be found
14377 (resolved) during method execution.
14378
14379
14380
14381
14382
14383 ------------------------------------------
14384 Summary of changes for this label: 9_29_00
14385
14386 New table initialization interfaces: AcpiInitializeSubsystem no
14387 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
14388 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
14389 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
14390 AcpiLoadTables
14391
14392 Note: These interface changes require changes to all existing OSDs
14393
14394 The PCI_Config default address space handler is always installed
14395 at the root namespace object.
14396
14397 -------------------------------------------
14398 Summary of changes for this label: 09_15_00
14399
14400 The new initialization architecture is implemented. New
14401 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
14402 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
14403
14404 (Namespace is automatically loaded when a table is loaded)
14405
14406 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
14407 52 bytes to 32 bytes. There is usually one of these for every
14408 namespace object, so the memory savings is significant.
14409
14410 Implemented just-in-time evaluation of the CreateField operators.
14411
14412 Bug fixes for IA-64 support have been integrated.
14413
14414 Additional code review comments have been implemented
14415
14416 The so-called "third pass parse" has been replaced by a final walk
14417 through the namespace to initialize all operation regions (address
14418 spaces) and fields that have not yet been initialized during the
14419 execution of the various _INI and REG methods.
14420
14421 New file - namespace/nsinit.c
14422
14423 -------------------------------------------
14424 Summary of changes for this label: 09_01_00
14425
14426 Namespace manager data structures have been reworked to change the
14427 primary object from a table to a single object. This has
14428 resulted in dynamic memory savings of 3X within the namespace and
14429 2X overall in the ACPI CA subsystem.
14430
14431 Fixed problem where the call to AcpiEvFindPciRootBuses was
14432 inadvertently left commented out.
14433
14434 Reduced the warning count when generating the source with the GCC
14435 compiler.
14436
14437 Revision numbers added to each module header showing the
14438 SourceSafe version of the file. Please refer to this version
14439 number when giving us feedback or comments on individual modules.
14440
14441 The main object types within the subsystem have been renamed to
14442 clarify their purpose:
14443
14444 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
14445 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
14446 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
14447
14448 NOTE: no changes to the initialization sequence are included in
14449 this label.
14450
14451 -------------------------------------------
14452 Summary of changes for this label: 08_23_00
14453
14454 Fixed problem where TerminateControlMethod was being called
14455 multiple times per method
14456
14457 Fixed debugger problem where single stepping caused a semaphore to
14458 be oversignalled
14459
14460 Improved performance through additional parse object caching -
14461 added ACPI_EXTENDED_OP type
14462
14463 -------------------------------------------
14464 Summary of changes for this label: 08_10_00
14465
14466 Parser/Interpreter integration: Eliminated the creation of
14467 complete parse trees for ACPI tables and control methods.
14468 Instead, parse subtrees are created and then deleted as soon as
14469 they are processed (Either entered into the namespace or executed
14470 by the interpreter). This reduces the use of dynamic kernel
14471 memory significantly. (about 10X)
14472
14473 Exception codes broken into classes and renumbered. Be sure to
14474 recompile all code that includes acexcep.h. Hopefully we won't
14475 have to renumber the codes again now that they are split into
14476 classes (environment, programmer, AML code, ACPI table, and
14477 internal).
14478
14479 Fixed some additional alignment issues in the Resource Manager
14480 subcomponent
14481
14482 Implemented semaphore tracking in the AcpiExec utility, and fixed
14483 several places where mutexes/semaphores were being unlocked
14484 without a corresponding lock operation. There are no known
14485 semaphore or mutex "leaks" at this time.
14486
14487 Fixed the case where an ASL Return operator is used to return an
14488 unnamed package.
14489
14490 -------------------------------------------
14491 Summary of changes for this label: 07_28_00
14492
14493 Fixed a problem with the way addresses were calculated in
14494 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
14495 manifested itself when a Field was created with WordAccess or
14496 DwordAccess, but the field unit defined within the Field was less
14497
14498 than a Word or Dword.
14499
14500 Fixed a problem in AmlDumpOperands() module's loop to pull
14501 operands off of the operand stack to display information. The
14502 problem manifested itself as a TLB error on 64-bit systems when
14503 accessing an operand stack with two or more operands.
14504
14505 Fixed a problem with the PCI configuration space handlers where
14506 context was getting confused between accesses. This required a
14507 change to the generic address space handler and address space
14508 setup definitions. Handlers now get both a global handler context
14509 (this is the one passed in by the user when executing
14510 AcpiInstallAddressSpaceHandler() and a specific region context
14511 that is unique to each region (For example, the _ADR, _SEG and
14512 _BBN values associated with a specific region). The generic
14513 function definitions have changed to the following:
14514
14515 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
14516 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
14517 *HandlerContext, // This used to be void *Context void
14518 *RegionContext); // This is an additional parameter
14519
14520 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
14521 RegionHandle, UINT32 Function, void *HandlerContext, void
14522 **RegionContext); // This used to be **ReturnContext
14523
14524 -------------------------------------------
14525 Summary of changes for this label: 07_21_00
14526
14527 Major file consolidation and rename. All files within the
14528 interpreter have been renamed as well as most header files. This
14529 was done to prevent collisions with existing files in the host
14530 OSs -- filenames such as "config.h" and "global.h" seem to be
14531 quite common. The VC project files have been updated. All
14532 makefiles will require modification.
14533
14534 The parser/interpreter integration continues in Phase 5 with the
14535 implementation of a complete 2-pass parse (the AML is parsed
14536 twice) for each table; This avoids the construction of a huge
14537 parse tree and therefore reduces the amount of dynamic memory
14538 required by the subsystem. Greater use of the parse object cache
14539 means that performance is unaffected.
14540
14541 Many comments from the two code reviews have been rolled in.
14542
14543 The 64-bit alignment support is complete.
14544
14545 -------------------------------------------
14546 Summary of changes for this label: 06_30_00
14547
14548 With a nod and a tip of the hat to the technology of yesteryear,
14549 we've added support in the source code for 80 column output
14550 devices. The code is now mostly constrained to 80 columns or
14551 less to support environments and editors that 1) cannot display
14552 or print more than 80 characters on a single line, and 2) cannot
14553 disable line wrapping.
14554
14555 A major restructuring of the namespace data structure has been
14556 completed. The result is 1) cleaner and more
14557 understandable/maintainable code, and 2) a significant reduction
14558 in the dynamic memory requirement for each named ACPI object
14559 (almost half).
14560
14561 -------------------------------------------
14562 Summary of changes for this label: 06_23_00
14563
14564 Linux support has been added. In order to obtain approval to get
14565 the ACPI CA subsystem into the Linux kernel, we've had to make
14566 quite a few changes to the base subsystem that will affect all
14567 users (all the changes are generic and OS- independent). The
14568 effects of these global changes have been somewhat far reaching.
14569 Files have been merged and/or renamed and interfaces have been
14570 renamed. The major changes are described below.
14571
14572 Osd* interfaces renamed to AcpiOs* to eliminate namespace
14573 pollution/confusion within our target kernels. All OSD
14574 interfaces must be modified to match the new naming convention.
14575
14576 Files merged across the subsystem. A number of the smaller source
14577 and header files have been merged to reduce the file count and
14578 increase the density of the existing files. There are too many
14579 to list here. In general, makefiles that call out individual
14580 files will require rebuilding.
14581
14582 Interpreter files renamed. All interpreter files now have the
14583 prefix am* instead of ie* and is*.
14584
14585 Header files renamed: The acapi.h file is now acpixf.h. The
14586 acpiosd.h file is now acpiosxf.h. We are removing references to
14587 the acronym "API" since it is somewhat windowsy. The new name is
14588 "external interface" or xface or xf in the filenames.j
14589
14590
14591 All manifest constants have been forced to upper case (some were
14592 mixed case.) Also, the string "ACPI_" has been prepended to many
14593 (not all) of the constants, typedefs, and structs.
14594
14595 The globals "DebugLevel" and "DebugLayer" have been renamed
14596 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
14597
14598 All other globals within the subsystem are now prefixed with
14599 "AcpiGbl_" Internal procedures within the subsystem are now
14600 prefixed with "Acpi" (with only a few exceptions). The original
14601 two-letter abbreviation for the subcomponent remains after "Acpi"
14602 - for example, CmCallocate became AcpiCmCallocate.
14603
14604 Added a source code translation/conversion utility. Used to
14605 generate the Linux source code, it can be modified to generate
14606 other types of source as well. Can also be used to cleanup
14607 existing source by removing extraneous spaces and blank lines.
14608 Found in tools/acpisrc/*
14609
14610 OsdUnMapMemory was renamed to OsdUnmapMemory and then
14611 AcpiOsUnmapMemory. (UnMap became Unmap).
14612
14613 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
14614 When set to one, this indicates that the caller wants to use the
14615
14616 semaphore as a mutex, not a counting semaphore. ACPI CA uses
14617 both types. However, implementers of this call may want to use
14618 different OS primitives depending on the type of semaphore
14619 requested. For example, some operating systems provide separate
14620
14621 "mutex" and "semaphore" interfaces - where the mutex interface is
14622 much faster because it doesn't have all the overhead of a full
14623 semaphore implementation.
14624
14625 Fixed a deadlock problem where a method that accesses the PCI
14626 address space can block forever if it is the first access to the
14627 space.
14628
14629 -------------------------------------------
14630 Summary of changes for this label: 06_02_00
14631
14632 Support for environments that cannot handle unaligned data
14633 accesses (e.g. firmware and OS environments devoid of alignment
14634 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
14635 been added (via configurable macros) in these three areas: -
14636 Transfer of data from the raw AML byte stream is done via byte
14637 moves instead of word/dword/qword moves. - External objects are
14638 aligned within the user buffer, including package elements (sub-
14639 objects). - Conversion of name strings to UINT32 Acpi Names is now
14640 done byte-wise.
14641
14642 The Store operator was modified to mimic Microsoft's
14643 implementation when storing to a Buffer Field.
14644
14645 Added a check of the BM_STS bit before entering C3.
14646
14647 The methods subdirectory has been obsoleted and removed. A new
14648 file, cmeval.c subsumes the functionality.
14649
14650 A 16-bit (DOS) version of AcpiExec has been developed. The
14651 makefile is under the acpiexec directory.