changes.txt revision 1.1.1.3
1 ---------------------------------------- 2 23 June 2011. Summary of changes for version 20110623: 3 4 1) ACPI CA Core Subsystem: 5 6 Updated the predefined name repair mechanism to not attempt repair of a _TSS 7 return object if a _PSS object is present. We can only sort the _TSS return 8 package if there is no _PSS within the same scope. This is because if _PSS is 9 present, the ACPI specification dictates that the _TSS Power Dissipation field 10 is to be ignored, and therefore some BIOSs leave garbage values in the _TSS 11 Power field(s). In this case, it is best to just return the _TSS package as- 12 is. Reported by, and fixed with assistance from Fenghua Yu. 13 14 Added an option to globally disable the control method return value validation 15 and repair. This runtime option can be used to disable return value repair if 16 this is causing a problem on a particular machine. Also added an option to 17 AcpiExec (-dr) to set this disable flag. 18 19 All makefiles and project files: Major changes to improve generation of ACPICA 20 tools. ACPICA BZ 912: 21 Reduce default optimization levels to improve compatibility 22 For Linux, add strict-aliasing=0 for gcc 4 23 Cleanup and simplify use of command line defines 24 Cleanup multithread library support 25 Improve usage messages 26 27 Linux-specific header: update handling of THREAD_ID and pthread. For the 32- 28 bit case, improve casting to eliminate possible warnings, especially with the 29 acpica tools. 30 31 Example Code and Data Size: These are the sizes for the OS-independent 32 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 33 version of the code includes the debug output trace mechanism and has a much 34 larger code and data size. 35 36 Previous Release (VC 9.0): 37 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 38 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 39 Current Release (VC 9.0): 40 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 41 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 42 43 2) iASL Compiler/Disassembler and Tools: 44 45 With this release, a new utility named "acpihelp" has been added to the ACPICA 46 package. This utility summarizes the ACPI specification chapters for the ASL 47 and AML languages. It generates under Linux/Unix as well as Windows, and 48 provides the following functionality: 49 Find/display ASL operator(s) -- with description and syntax. 50 Find/display ASL keyword(s) -- with exact spelling and descriptions. 51 Find/display ACPI predefined name(s) -- with description, number 52 of arguments, and the return value data type. 53 Find/display AML opcode name(s) -- with opcode, arguments, and grammar. 54 Decode/display AML opcode -- with opcode name, arguments, and grammar. 55 56 Service Layers: Make multi-thread support configurable. Conditionally compile 57 the multi-thread support so that threading libraries will not be linked if not 58 necessary. The only tool that requires multi-thread support is AcpiExec. 59 60 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions of 61 Bison appear to want the interface to yyerror to be a const char * (or at 62 least this is a problem when generating iASL on some systems.) ACPICA BZ 923 63 Pierre Lejeune. 64 65 Tools: Fix for systems where O_BINARY is not defined. Only used for Windows 66 versions of the tools. 67 68 ---------------------------------------- 69 27 May 2011. Summary of changes for version 20110527: 70 71 1) ACPI CA Core Subsystem: 72 73 ASL Load() operator: Reinstate most restrictions on the incoming ACPI table 74 signature. Now, only allow SSDT, OEMx, and a null signature. History: 75 1) Originally, we checked the table signature for "SSDT" or "PSDT". 76 (PSDT is now obsolete.) 77 2) We added support for OEMx tables, signature "OEM" plus a fourth 78 "don't care" character. 79 3) Valid tables were encountered with a null signature, so we just 80 gave up on validating the signature, (05/2008). 81 4) We encountered non-AML tables such as the MADT, which caused 82 interpreter errors and kernel faults. So now, we once again allow 83 only SSDT, OEMx, and now, also a null signature. (05/2011). 84 85 Added the missing _TDL predefined name to the global name list in order to 86 enable validation. Affects both the core ACPICA code and the iASL compiler. 87 88 Example Code and Data Size: These are the sizes for the OS-independent 89 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 90 version of the code includes the debug output trace mechanism and has a much 91 larger code and data size. 92 93 Previous Release (VC 9.0): 94 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 95 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 96 Current Release (VC 9.0): 97 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 98 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 99 100 2) iASL Compiler/Disassembler and Tools: 101 102 Debugger/AcpiExec: Implemented support for "complex" method arguments on the 103 debugger command line. This adds support beyond simple integers -- including 104 Strings, Buffers, and Packages. Includes support for nested packages. 105 Increased the default command line buffer size to accommodate these arguments. 106 See the ACPICA reference for details and syntax. ACPICA BZ 917. 107 108 Debugger/AcpiExec: Implemented support for "default" method arguments for the 109 Execute/Debug command. Now, the debugger will always invoke a control method 110 with the required number of arguments -- even if the command line specifies 111 none or insufficient arguments. It uses default integer values for any missing 112 arguments. Also fixes a bug where only six method arguments maximum were 113 supported instead of the required seven. 114 115 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine and 116 also return status in order to prevent buffer overruns. See the ACPICA 117 reference for details and syntax. ACPICA BZ 921 118 119 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 120 makefiles to simplify support for the two different but similar parser 121 generators, bison and yacc. 122 123 Updated the generic unix makefile for gcc 4. The default gcc version is now 124 expected to be 4 or greater, since options specific to gcc 4 are used. 125 126 ---------------------------------------- 127 13 April 2011. Summary of changes for version 20110413: 128 129 1) ACPI CA Core Subsystem: 130 131 Implemented support to execute a so-called "orphan" _REG method under the EC 132 device. This change will force the execution of a _REG method underneath the 133 EC 134 device even if there is no corresponding operation region of type 135 EmbeddedControl. Fixes a problem seen on some machines and apparently is 136 compatible with Windows behavior. ACPICA BZ 875. 137 138 Added more predefined methods that are eligible for automatic NULL package 139 element removal. This change adds another group of predefined names to the 140 list 141 of names that can be repaired by having NULL package elements dynamically 142 removed. This group are those methods that return a single variable-length 143 package containing simple data types such as integers, buffers, strings. This 144 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, _PSL, 145 _Sx, 146 and _TZD. ACPICA BZ 914. 147 148 Split and segregated all internal global lock functions to a new file, 149 evglock.c. 150 151 Updated internal address SpaceID for DataTable regions. Moved this internal 152 space 153 id in preparation for ACPI 5.0 changes that will include some new space IDs. 154 This 155 change should not affect user/host code. 156 157 Example Code and Data Size: These are the sizes for the OS-independent 158 acpica.lib 159 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of 160 the code includes the debug output trace mechanism and has a much larger code 161 and 162 data size. 163 164 Previous Release (VC 9.0): 165 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 166 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 167 Current Release (VC 9.0): 168 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 169 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 170 171 2) iASL Compiler/Disassembler and Tools: 172 173 iASL/DTC: Major update for new grammar features. Allow generic data types in 174 custom ACPI tables. Field names are now optional. Any line can be split to 175 multiple lines using the continuation char (\). Large buffers now use line- 176 continuation character(s) and no colon on the continuation lines. See the 177 grammar 178 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob Moore. 179 180 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return statements. 181 Since the parser stuffs a "zero" as the return value for these statements (due 182 to 183 the underlying AML grammar), they were seen as "return with value" by the iASL 184 semantic checking. They are now seen correctly as "null" return statements. 185 186 iASL: Check if a_REG declaration has a corresponding Operation Region. Adds a 187 check for each _REG to ensure that there is in fact a corresponding operation 188 region declaration in the same scope. If not, the _REG method is not very 189 useful 190 since it probably won't be executed. ACPICA BZ 915. 191 192 iASL/DTC: Finish support for expression evaluation. Added a new expression 193 parser 194 that implements c-style operator precedence and parenthesization. ACPICA 195 bugzilla 196 908. 197 198 Disassembler/DTC: Remove support for () and <> style comments in data tables. 199 Now 200 that DTC has full expression support, we don't want to have comment strings 201 that 202 start with a parentheses or a less-than symbol. Now, only the standard /* and 203 // 204 comments are supported, as well as the bracket [] comments. 205 206 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 207 "unusual" 208 headers in the acpidump file. Update the header validation to support these 209 tables. Problem introduced in previous AcpiXtract version in the change to 210 support "wrong checksum" error messages emitted by acpidump utility. 211 212 iASL: Add a * option to generate all template files (as a synonym for ALL) as 213 in 214 "iasl -T *" or "iasl -T ALL". 215 216 iASL/DTC: Do not abort compiler on fatal errors. We do not want to completely 217 abort the compiler on "fatal" errors, simply should abort the current compile. 218 This allows multiple compiles with a single (possibly wildcard) compiler 219 invocation. 220 221 ---------------------------------------- 222 16 March 2011. Summary of changes for version 20110316: 223 224 1) ACPI CA Core Subsystem: 225 226 Fixed a problem caused by a _PRW method appearing at the namespace root scope 227 during the setup of wake GPEs. A fault could occur if a _PRW directly under 228 the 229 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 230 231 Implemented support for "spurious" Global Lock interrupts. On some systems, a 232 global lock interrupt can occur without the pending flag being set. Upon a GL 233 interrupt, we now ensure that a thread is actually waiting for the lock before 234 signaling GL availability. Rafael Wysocki, Bob Moore. 235 236 Example Code and Data Size: These are the sizes for the OS-independent 237 acpica.lib 238 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of 239 the code includes the debug output trace mechanism and has a much larger code 240 and 241 data size. 242 243 Previous Release (VC 9.0): 244 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 245 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 246 Current Release (VC 9.0): 247 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 248 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 249 250 2) iASL Compiler/Disassembler and Tools: 251 252 Implemented full support for the "SLIC" ACPI table. Includes support in the 253 header files, disassembler, table compiler, and template generator. Bob Moore, 254 Lin Ming. 255 256 AcpiXtract: Correctly handle embedded comments and messages from AcpiDump. 257 Apparently some or all versions of acpidump will occasionally emit a comment 258 like 259 "Wrong checksum", etc., into the dump file. This was causing problems for 260 AcpiXtract. ACPICA BZ 905. 261 262 iASL: Fix the Linux makefile by removing an inadvertent double file inclusion. 263 ACPICA BZ 913. 264 265 AcpiExec: Update installation of operation region handlers. Install one 266 handler 267 for a user-defined address space. This is used by the ASL test suite (ASLTS). 268 269 ---------------------------------------- 270 11 February 2011. Summary of changes for version 20110211: 271 272 1) ACPI CA Core Subsystem: 273 274 Added a mechanism to defer _REG methods for some early-installed handlers. 275 Most user handlers should be installed before call to AcpiEnableSubsystem. 276 However, Event handlers and region handlers should be installed after 277 AcpiInitializeObjects. Override handlers for the "default" regions should be 278 installed early, however. This change executes all _REG methods for the 279 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 280 chicken/egg issues between them. ACPICA BZ 848. 281 282 Implemented an optimization for GPE detection. This optimization will simply 283 ignore GPE registers that contain no enabled GPEs -- there is no need to 284 read the register since this information is available internally. This 285 becomes more important on machines with a large GPE space. ACPICA bugzilla 286 884. Lin Ming. Suggestion from Joe Liu. 287 288 Removed all use of the highly unreliable FADT revision field. The revision 289 number in the FADT has been found to be completely unreliable and cannot be 290 trusted. Only the actual table length can be used to infer the version. This 291 change updates the ACPICA core and the disassembler so that both no longer 292 even look at the FADT version and instead depend solely upon the FADT 293 length. 294 295 Fix an unresolved name issue for the no-debug and no-error-message source 296 generation cases. The _AcpiModuleName was left undefined in these cases, but 297 it is actually needed as a parameter to some interfaces. Define 298 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 299 300 Split several large files (makefiles and project files updated) 301 utglobal.c -> utdecode.c 302 dbcomds.c -> dbmethod.c dbnames.c 303 dsopcode.c -> dsargs.c dscontrol.c 304 dsload.c -> dsload2.c 305 aslanalyze.c -> aslbtypes.c aslwalks.c 306 307 Example Code and Data Size: These are the sizes for the OS-independent 308 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 309 debug version of the code includes the debug output trace mechanism and has 310 a much larger code and data size. 311 312 Previous Release (VC 9.0): 313 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 314 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 315 Current Release (VC 9.0): 316 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 317 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 318 319 2) iASL Compiler/Disassembler and Tools: 320 321 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 322 These are useful C-style macros with the standard definitions. ACPICA 323 bugzilla 898. 324 325 iASL/DTC: Added support for integer expressions and labels. Support for full 326 expressions for all integer fields in all ACPI tables. Support for labels in 327 "generic" portions of tables such as UEFI. See the iASL reference manual. 328 329 Debugger: Added a command to display the status of global handlers. The 330 "handlers" command will display op region, fixed event, and miscellaneous 331 global handlers. installation status -- and for op regions, whether default 332 or user-installed handler will be used. 333 334 iASL: Warn if reserved method incorrectly returns a value. Many predefined 335 names are defined such that they do not return a value. If implemented as a 336 method, issue a warning if such a name explicitly returns a value. ACPICA 337 Bugzilla 855. 338 339 iASL: Added detection of GPE method name conflicts. Detects a conflict where 340 there are two GPE methods of the form _Lxy and _Exy in the same scope. (For 341 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 342 343 iASL/DTC: Fixed a couple input scanner issues with comments and line 344 numbers. Comment remover could get confused and miss a comment ending. Fixed 345 a problem with line counter maintenance. 346 347 iASL/DTC: Reduced the severity of some errors from fatal to error. There is 348 no need to abort on simple errors within a field definition. 349 350 Debugger: Simplified the output of the help command. All help output now in 351 a single screen, instead of help subcommands. ACPICA Bugzilla 897. 352 353 ---------------------------------------- 354 12 January 2011. Summary of changes for version 20110112: 355 356 1) ACPI CA Core Subsystem: 357 358 Fixed a race condition between method execution and namespace walks that can 359 possibly cause a fault. The problem was apparently introduced in version 360 20100528 as a result of a performance optimization that reduces the number of 361 namespace walks upon method exit by using the delete_namespace_subtree 362 function instead of the delete_namespace_by_owner function used previously. 363 Bug is a missing namespace lock in the delete_namespace_subtree function. 364 dana.myers (a] oracle.com 365 366 Fixed several issues and a possible fault with the automatic "serialized" 367 method support. History: This support changes a method to "serialized" on the 368 fly if the method generates an AE_ALREADY_EXISTS error, indicating the 369 possibility that it cannot handle reentrancy. This fix repairs a couple of 370 issues seen in the field, especially on machines with many cores: 371 372 1) Delete method children only upon the exit of the last thread, 373 so as to not delete objects out from under other running threads 374 (and possibly causing a fault.) 375 2) Set the "serialized" bit for the method only upon the exit of the 376 Last thread, so as to not cause deadlock when running threads 377 attempt to exit. 378 3) Cleanup the use of the AML "MethodFlags" and internal method flags 379 so that there is no longer any confusion between the two. 380 381 Lin Ming, Bob Moore. Reported by dana.myers (a] oracle.com. 382 383 Debugger: Now lock the namespace for duration of a namespace dump. Prevents 384 issues if the namespace is changing dynamically underneath the debugger. 385 Especially affects temporary namespace nodes, since the debugger displays 386 these also. 387 388 Updated the ordering of include files. The ACPICA headers should appear 389 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can set 390 any necessary compiler-specific defines, etc. Affects the ACPI-related tools 391 and utilities. 392 393 Updated all ACPICA copyrights and signons to 2011. Added the 2011 copyright 394 to all module headers and signons, including the Linux header. This affects 395 virtually every file in the ACPICA core subsystem, iASL compiler, and all 396 utilities. 397 398 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 399 project files for VC++ 6.0 are now obsolete. New project files can be found 400 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 401 details. 402 403 Example Code and Data Size: These are the sizes for the OS-independent 404 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 405 debug version of the code includes the debug output trace mechanism and has a 406 much larger code and data size. 407 408 Previous Release (VC 6.0): 409 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 410 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 411 Current Release (VC 9.0): 412 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 413 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 414 415 2) iASL Compiler/Disassembler and Tools: 416 417 iASL: Added generic data types to the Data Table compiler. Add "generic" data 418 types such as UINT32, String, Unicode, etc., to simplify the generation of 419 platform-defined tables such as UEFI. Lin Ming. 420 421 iASL: Added listing support for the Data Table Compiler. Adds listing support 422 (-l) to display actual binary output for each line of input code. 423 424 ---------------------------------------- 425 09 December 2010. Summary of changes for version 20101209: 426 427 1) ACPI CA Core Subsystem: 428 429 Completed the major overhaul of the GPE support code that was begun in July 430 2010. Major features include: removal of _PRW execution in ACPICA (host 431 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 432 changes to existing interfaces, simplification of GPE handler operation, and 433 a handful of new interfaces: 434 435 AcpiUpdateAllGpes 436 AcpiFinishGpe 437 AcpiSetupGpeForWake 438 AcpiSetGpeWakeMask 439 One new file, evxfgpe.c to consolidate all external GPE interfaces. 440 441 See the ACPICA Programmer Reference for full details and programming 442 information. See the new section 4.4 "General Purpose Event (GPE) Support" 443 for a full overview, and section 8.7 "ACPI General Purpose Event Management" 444 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin Ming, 445 Bob Moore, Rafael Wysocki. 446 447 Implemented a new GPE feature for Windows compatibility, the "Implicit Wake 448 GPE Notify". This feature will automatically issue a Notify(2) on a device 449 when a Wake GPE is received if there is no corresponding GPE method or 450 handler. ACPICA BZ 870. 451 452 Fixed a problem with the Scope() operator during table parse and load phase. 453 During load phase (table load or method execution), the scope operator should 454 not enter the target into the namespace. Instead, it should open a new scope 455 at the target location. Linux BZ 19462, ACPICA BZ 882. 456 457 Example Code and Data Size: These are the sizes for the OS-independent 458 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 459 debug version of the code includes the debug output trace mechanism and has a 460 much larger code and data size. 461 462 Previous Release: 463 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 464 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 465 Current Release: 466 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 467 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 468 469 2) iASL Compiler/Disassembler and Tools: 470 471 iASL: Relax the alphanumeric restriction on _CID strings. These strings are 472 "bus-specific" per the ACPI specification, and therefore any characters are 473 acceptable. The only checks that can be performed are for a null string and 474 perhaps for a leading asterisk. ACPICA BZ 886. 475 476 iASL: Fixed a problem where a syntax error that caused a premature EOF 477 condition on the source file emitted a very confusing error message. The 478 premature EOF is now detected correctly. ACPICA BZ 891. 479 480 Disassembler: Decode the AccessSize within a Generic Address Structure (byte 481 access, word access, etc.) Note, this field does not allow arbitrary bit 482 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 483 484 New: AcpiNames utility - Example namespace dump utility. Shows an example of 485 ACPICA configuration for a minimal namespace dump utility. Uses table and 486 namespace managers, but no AML interpreter. Does not add any functionality 487 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 488 partition and configure ACPICA. ACPICA BZ 883. 489 490 AML Debugger: Increased the debugger buffer size for method return objects. 491 Was 4K, increased to 16K. Also enhanced error messages for debugger method 492 execution, including the buffer overflow case. 493 494 ---------------------------------------- 495 13 October 2010. Summary of changes for version 20101013: 496 497 1) ACPI CA Core Subsystem: 498 499 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, now 500 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 501 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 502 503 Changed the type of the predefined namespace object _TZ from ThermalZone to 504 Device. This was found to be confusing to the host software that processes 505 the various thermal zones, since _TZ is not really a ThermalZone. However, a 506 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 507 Zhang. 508 509 Added Windows Vista SP2 to the list of supported _OSI strings. The actual 510 string is "Windows 2006 SP2". 511 512 Eliminated duplicate code in AcpiUtExecute* functions. Now that the nsrepair 513 code automatically repairs _HID-related strings, this type of code is no 514 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 878. 515 516 Example Code and Data Size: These are the sizes for the OS-independent 517 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 518 debug version of the code includes the debug output trace mechanism and has a 519 much larger code and data size. 520 521 Previous Release: 522 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 523 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 524 Current Release: 525 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 526 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 527 528 2) iASL Compiler/Disassembler and Tools: 529 530 iASL: Implemented additional compile-time validation for _HID strings. The 531 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the length of 532 the string must be exactly seven or eight characters. For both _HID and _CID 533 strings, all characters must be alphanumeric. ACPICA BZ 874. 534 535 iASL: Allow certain "null" resource descriptors. Some BIOS code creates 536 descriptors that are mostly or all zeros, with the expectation that they will 537 be filled in at runtime. iASL now allows this as long as there is a "resource 538 tag" (name) associated with the descriptor, which gives the ASL a handle 539 needed to modify the descriptor. ACPICA BZ 873. 540 541 Added single-thread support to the generic Unix application OSL. Primarily 542 for iASL support, this change removes the use of semaphores in the single- 543 threaded ACPICA tools/applications - increasing performance. The 544 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 545 option. ACPICA BZ 879. 546 547 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and support 548 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 549 550 iASL: Moved all compiler messages to a new file, aslmessages.h. 551 552 ---------------------------------------- 553 15 September 2010. Summary of changes for version 20100915: 554 555 1) ACPI CA Core Subsystem: 556 557 Removed the AcpiOsDerivePciId OSL interface. The various host implementations 558 of this function were not OS-dependent and are now obsolete and can be 559 removed from all host OSLs. This function has been replaced by 560 AcpiHwDerivePciId, which is now part of the ACPICA core code. 561 AcpiHwDerivePciId has been implemented without recursion. Adds one new 562 module, hwpci.c. ACPICA BZ 857. 563 564 Implemented a dynamic repair for _HID and _CID strings. The following 565 problems are now repaired at runtime: 1) Remove a leading asterisk in the 566 string, and 2) the entire string is uppercased. Both repairs are in 567 accordance with the ACPI specification and will simplify host driver code. 568 ACPICA BZ 871. 569 570 The ACPI_THREAD_ID type is no longer configurable, internally it is now 571 always UINT64. This simplifies the ACPICA code, especially any printf output. 572 UINT64 is the only common data type for all thread_id types across all 573 operating systems. It is now up to the host OSL to cast the native thread_id 574 type to UINT64 before returning the value to ACPICA (via AcpiOsGetThreadId). 575 Lin Ming, Bob Moore. 576 577 Added the ACPI_INLINE type to enhance the ACPICA configuration. The "inline" 578 keyword is not standard across compilers, and this type allows inline to be 579 configured on a per-compiler basis. Lin Ming. 580 581 Made the system global AcpiGbl_SystemAwakeAndRunning publically available. 582 Added an extern for this boolean in acpixf.h. Some hosts utilize this value 583 during suspend/restore operations. ACPICA BZ 869. 584 585 All code that implements error/warning messages with the "ACPI:" prefix has 586 been moved to a new module, utxferror.c. 587 588 The UINT64_OVERLAY was moved to utmath.c, which is the only module where it 589 is used. ACPICA BZ 829. Lin Ming, Bob Moore. 590 591 Example Code and Data Size: These are the sizes for the OS-independent 592 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 593 debug version of the code includes the debug output trace mechanism and has a 594 much larger code and data size. 595 596 Previous Release: 597 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 598 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 599 Current Release: 600 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 601 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 602 603 2) iASL Compiler/Disassembler and Tools: 604 605 iASL/Disassembler: Write ACPI errors to stderr instead of the output file. 606 This keeps the output files free of random error messages that may originate 607 from within the namespace/interpreter code. Used this opportunity to merge 608 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 609 866. Lin Ming, Bob Moore. 610 611 Tools: update some printfs for ansi warnings on size_t. Handle width change 612 of size_t on 32-bit versus 64-bit generations. Lin Ming. 613 614 ---------------------------------------- 615 06 August 2010. Summary of changes for version 20100806: 616 617 1) ACPI CA Core Subsystem: 618 619 Designed and implemented a new host interface to the _OSI support code. This 620 will allow the host to dynamically add or remove multiple _OSI strings, as 621 well as install an optional handler that is called for each _OSI invocation. 622 Also added a new AML debugger command, 'osi' to display and modify the global 623 _OSI string table, and test support in the AcpiExec utility. See the ACPICA 624 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 625 New Functions: 626 AcpiInstallInterface - Add an _OSI string. 627 AcpiRemoveInterface - Delete an _OSI string. 628 AcpiInstallInterfaceHandler - Install optional _OSI handler. 629 Obsolete Functions: 630 AcpiOsValidateInterface - no longer used. 631 New Files: 632 source/components/utilities/utosi.c 633 634 Re-introduced the support to enable multi-byte transfers for Embedded 635 Controller (EC) operation regions. A reported problem was found to be a bug 636 in the host OS, not in the multi-byte support. Previously, the maximum data 637 size passed to the EC operation region handler was a single byte. There are 638 often EC Fields larger than one byte that need to be transferred, and it is 639 useful for the EC driver to lock these as a single transaction. This change 640 enables single transfers larger than 8 bits. This effectively changes the 641 access to the EC space from ByteAcc to AnyAcc, and will probably require 642 changes to the host OS Embedded Controller driver to enable 16/32/64/256-bit 643 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 644 645 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 646 prototype in acpiosxf.h had the output value pointer as a (void *). 647 It should be a (UINT64 *). This may affect some host OSL code. 648 649 Fixed a couple problems with the recently modified Linux makefiles for iASL 650 and AcpiExec. These new makefiles place the generated object files in the 651 local directory so that there can be no collisions between the files that are 652 shared between them that are compiled with different options. 653 654 Example Code and Data Size: These are the sizes for the OS-independent 655 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 656 debug version of the code includes the debug output trace mechanism and has a 657 much larger code and data size. 658 659 Previous Release: 660 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 661 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 662 Current Release: 663 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 664 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 665 666 2) iASL Compiler/Disassembler and Tools: 667 668 iASL/Disassembler: Added a new option (-da, "disassemble all") to load the 669 namespace from and disassemble an entire group of AML files. Useful for 670 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) and 671 disassembling with one simple command. ACPICA BZ 865. Lin Ming. 672 673 iASL: Allow multiple invocations of -e option. This change allows multiple 674 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 834. 675 Lin Ming. 676 677 ---------------------------------------- 678 02 July 2010. Summary of changes for version 20100702: 679 680 1) ACPI CA Core Subsystem: 681 682 Implemented several updates to the recently added GPE reference count 683 support. The model for "wake" GPEs is changing to give the host OS complete 684 control of these GPEs. Eventually, the ACPICA core will not execute any _PRW 685 methods, since the host already must execute them. Also, additional changes 686 were made to help ensure that the reference counts are kept in proper 687 synchronization with reality. Rafael J. Wysocki. 688 689 1) Ensure that GPEs are not enabled twice during initialization. 690 2) Ensure that GPE enable masks stay in sync with the reference count. 691 3) Do not inadvertently enable GPEs when writing GPE registers. 692 4) Remove the internal wake reference counter and add new AcpiGpeWakeup 693 interface. This interface will set or clear individual GPEs for wakeup. 694 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These interfaces 695 are now used for "runtime" GPEs only. 696 697 Changed the behavior of the GPE install/remove handler interfaces. The GPE is 698 no longer disabled during this process, as it was found to cause problems on 699 some machines. Rafael J. Wysocki. 700 701 Reverted a change introduced in version 20100528 to enable Embedded 702 Controller multi-byte transfers. This change was found to cause problems with 703 Index Fields and possibly Bank Fields. It will be reintroduced when these 704 problems have been resolved. 705 706 Fixed a problem with references to Alias objects within Package Objects. A 707 reference to an Alias within the definition of a Package was not always 708 resolved properly. Aliases to objects like Processors, Thermal zones, etc. 709 were resolved to the actual object instead of a reference to the object as it 710 should be. Package objects are only allowed to contain integer, string, 711 buffer, package, and reference objects. Redhat bugzilla 608648. 712 713 Example Code and Data Size: These are the sizes for the OS-independent 714 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 715 debug version of the code includes the debug output trace mechanism and has a 716 much larger code and data size. 717 718 Previous Release: 719 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 720 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 721 Current Release: 722 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 723 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 724 725 2) iASL Compiler/Disassembler and Tools: 726 727 iASL: Implemented a new compiler subsystem to allow definition and 728 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. These 729 are called "ACPI Data Tables", and the new compiler is the "Data Table 730 Compiler". This compiler is intended to simplify the existing error-prone 731 process of creating these tables for the BIOS, as well as allowing the 732 disassembly, modification, recompilation, and override of existing ACPI data 733 tables. See the iASL User Guide for detailed information. 734 735 iASL: Implemented a new Template Generator option in support of the new Data 736 Table Compiler. This option will create examples of all known ACPI tables 737 that can be used as the basis for table development. See the iASL 738 documentation and the -T option. 739 740 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 741 Descriptor Table). 742 743 Updated the Linux makefiles for iASL and AcpiExec to place the generated 744 object files in the local directory so that there can be no collisions 745 between the shared files between them that are generated with different 746 options. 747 748 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use 749 the #define __APPLE__ to enable this support. 750 751 ---------------------------------------- 752 28 May 2010. Summary of changes for version 20100528: 753 754 Note: The ACPI 4.0a specification was released on April 5, 2010 and is 755 available at www.acpi.info. This is primarily an errata release. 756 757 1) ACPI CA Core Subsystem: 758 759 Undefined ACPI tables: We are looking for the definitions for the following 760 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 761 762 Implemented support to enable multi-byte transfers for Embedded Controller 763 (EC) operation regions. Previously, the maximum data size passed to the EC 764 operation region handler was a single byte. There are often EC Fields larger 765 than one byte that need to be transferred, and it is useful for the EC driver 766 to lock these as a single transaction. This change enables single transfers 767 larger than 8 bits. This effectively changes the access to the EC space from 768 ByteAcc to AnyAcc, and will probably require changes to the host OS Embedded 769 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-bit 770 transfers. Alexey Starikovskiy, Lin Ming 771 772 Implemented a performance enhancement for namespace search and access. This 773 change enhances the performance of namespace searches and walks by adding a 774 backpointer to the parent in each namespace node. On large namespaces, this 775 change can improve overall ACPI performance by up to 9X. Adding a pointer to 776 each namespace node increases the overall size of the internal namespace by 777 about 5%, since each namespace entry usually consists of both a namespace 778 node and an ACPI operand object. However, this is the first growth of the 779 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 780 781 Implemented a performance optimization that reduces the number of namespace 782 walks. On control method exit, only walk the namespace if the method is known 783 to have created namespace objects outside of its local scope. Previously, the 784 entire namespace was traversed on each control method exit. This change can 785 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob Moore. 786 787 Added support to truncate I/O addresses to 16 bits for Windows compatibility. 788 Some ASL code has been seen in the field that inadvertently has bits set 789 above bit 15. This feature is optional and is enabled if the BIOS requests 790 any Windows OSI strings. It can also be enabled by the host OS. Matthew 791 Garrett, Bob Moore. 792 793 Added support to limit the maximum time for the ASL Sleep() operator. To 794 prevent accidental deep sleeps, limit the maximum time that Sleep() will 795 actually sleep. Configurable, the default maximum is two seconds. ACPICA 796 bugzilla 854. 797 798 Added run-time validation support for the _WDG and_WED Microsoft predefined 799 methods. These objects are defined by "Windows Instrumentation", and are not 800 part of the ACPI spec. ACPICA BZ 860. 801 802 Expanded all statistic counters used during namespace and device 803 initialization from 16 to 32 bits in order to support very large namespaces. 804 805 Replaced all instances of %d in printf format specifiers with %u since nearly 806 all integers in ACPICA are unsigned. 807 808 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly returned 809 as AE_NO_HANDLER. 810 811 Example Code and Data Size: These are the sizes for the OS-independent 812 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 813 debug version of the code includes the debug output trace mechanism and has a 814 much larger code and data size. 815 816 Previous Release: 817 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 818 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 819 Current Release: 820 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 821 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 822 823 2) iASL Compiler/Disassembler and Tools: 824 825 iASL: Added compiler support for the _WDG and_WED Microsoft predefined 826 methods. These objects are defined by "Windows Instrumentation", and are not 827 part of the ACPI spec. ACPICA BZ 860. 828 829 AcpiExec: added option to disable the memory tracking mechanism. The -dt 830 option will disable the tracking mechanism, which improves performance 831 considerably. 832 833 AcpiExec: Restructured the command line options into -d (disable) and -e 834 (enable) options. 835 836 ---------------------------------------- 837 28 April 2010. Summary of changes for version 20100428: 838 839 1) ACPI CA Core Subsystem: 840 841 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 842 including FADT-based and GPE Block Devices, execute any _PRW methods in the 843 new table, and process any _Lxx/_Exx GPE methods in the new table. Any 844 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 845 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 846 Devices. Provides compatibility with other ACPI implementations. Two new 847 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob Moore. 848 849 Fixed a regression introduced in version 20100331 within the table manager 850 where initial table loading could fail. This was introduced in the fix for 851 AcpiReallocateRootTable. Also, renamed some of fields in the table manager 852 data structures to clarify their meaning and use. 853 854 Fixed a possible allocation overrun during internal object copy in 855 AcpiUtCopySimpleObject. The original code did not correctly handle the case 856 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 847. 857 858 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 859 possible access beyond end-of-allocation. Also, now fully validate descriptor 860 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 861 862 Example Code and Data Size: These are the sizes for the OS-independent 863 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 864 debug version of the code includes the debug output trace mechanism and has a 865 much larger code and data size. 866 867 Previous Release: 868 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 869 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 870 Current Release: 871 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 872 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 873 874 2) iASL Compiler/Disassembler and Tools: 875 876 iASL: Implemented Min/Max/Len/Gran validation for address resource 877 descriptors. This change implements validation for the address fields that 878 are common to all address-type resource descriptors. These checks are 879 implemented: Checks for valid Min/Max, length within the Min/Max window, 880 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per 881 table 6-40 in the ACPI 4.0a specification. Also split the large aslrestype1.c 882 and aslrestype2.c files into five new files. ACPICA BZ 840. 883 884 iASL: Added support for the _Wxx predefined names. This support was missing 885 and these names were not recognized by the compiler as valid predefined 886 names. ACPICA BZ 851. 887 888 iASL: Added an error for all predefined names that are defined to return no 889 value and thus must be implemented as Control Methods. These include all of 890 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 891 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 892 893 iASL: Implemented the -ts option to emit hex AML data in ASL format, as an 894 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to be 895 dynamically loaded via the Load() operator. Also cleaned up output for the - 896 ta and -tc options. ACPICA BZ 853. 897 898 Tests: Added a new file with examples of extended iASL error checking. 899 Demonstrates the advanced error checking ability of the iASL compiler. 900 Available at tests/misc/badcode.asl. 901 902 ---------------------------------------- 903 31 March 2010. Summary of changes for version 20100331: 904 905 1) ACPI CA Core Subsystem: 906 907 Completed a major update for the GPE support in order to improve support for 908 shared GPEs and to simplify both host OS and ACPICA code. Added a reference 909 count mechanism to support shared GPEs that require multiple device drivers. 910 Several external interfaces have changed. One external interface has been 911 removed. One new external interface was added. Most of the GPE external 912 interfaces now use the GPE spinlock instead of the events mutex (and the 913 Flags parameter for many GPE interfaces has been removed.) See the updated 914 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, Rafael 915 Wysocki. ACPICA BZ 831. 916 917 Changed: 918 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 919 Removed: 920 AcpiSetGpeType 921 New: 922 AcpiSetGpe 923 924 Implemented write support for DataTable operation regions. These regions are 925 defined via the DataTableRegion() operator. Previously, only read support was 926 implemented. The ACPI specification allows DataTableRegions to be read/write, 927 however. 928 929 Implemented a new subsystem option to force a copy of the DSDT to local 930 memory. Optionally copy the entire DSDT to local memory (instead of simply 931 mapping it.) There are some (albeit very rare) BIOSs that corrupt or replace 932 the original DSDT, creating the need for this option. Default is FALSE, do 933 not copy the DSDT. 934 935 Implemented detection of a corrupted or replaced DSDT. This change adds 936 support to detect a DSDT that has been corrupted and/or replaced from outside 937 the OS (by firmware). This is typically catastrophic for the system, but has 938 been seen on some machines. Once this problem has been detected, the DSDT 939 copy option can be enabled via system configuration. Lin Ming, Bob Moore. 940 941 Fixed two problems with AcpiReallocateRootTable during the root table copy. 942 When copying the root table to the new allocation, the length used was 943 incorrect. The new size was used instead of the current table size, meaning 944 too much data was copied. Also, the count of available slots for ACPI tables 945 was not set correctly. Alexey Starikovskiy, Bob Moore. 946 947 Example Code and Data Size: These are the sizes for the OS-independent 948 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 949 debug version of the code includes the debug output trace mechanism and has a 950 much larger code and data size. 951 952 Previous Release: 953 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 954 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 955 Current Release: 956 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 957 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 958 959 2) iASL Compiler/Disassembler and Tools: 960 961 iASL: Implement limited typechecking for values returned from predefined 962 control methods. The type of any returned static (unnamed) object is now 963 validated. For example, Return(1). ACPICA BZ 786. 964 965 iASL: Fixed a predefined name object verification regression. Fixes a problem 966 introduced in version 20100304. An error is incorrectly generated if a 967 predefined name is declared as a static named object with a value defined 968 using the keywords "Zero", "One", or "Ones". Lin Ming. 969 970 iASL: Added Windows 7 support for the -g option (get local ACPI tables) by 971 reducing the requested registry access rights. ACPICA BZ 842. 972 973 Disassembler: fixed a possible fault when generating External() statements. 974 Introduced in commit ae7d6fd: Properly handle externals with parent-prefix 975 (carat). Fixes a string length allocation calculation. Lin Ming. 976 977 ---------------------------------------- 978 04 March 2010. Summary of changes for version 20100304: 979 980 1) ACPI CA Core Subsystem: 981 982 Fixed a possible problem with the AML Mutex handling function 983 AcpiExReleaseMutex where the function could fault under the very rare 984 condition when the interpreter has blocked, the interpreter lock is released, 985 the interpreter is then reentered via the same thread, and attempts to 986 acquire an AML mutex that was previously acquired. FreeBSD report 140979. Lin 987 Ming. 988 989 Implemented additional configuration support for the AML "Debug Object". 990 Output from the debug object can now be enabled via a global variable, 991 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine debugging. 992 This debug output is now available in the release version of ACPICA instead 993 of just the debug version. Also, the entire debug output module can now be 994 configured out of the ACPICA build if desired. One new file added, 995 executer/exdebug.c. Lin Ming, Bob Moore. 996 997 Added header support for the ACPI MCHI table (Management Controller Host 998 Interface Table). This table was added in ACPI 4.0, but the defining document 999 has only recently become available. 1000 1001 Standardized output of integer values for ACPICA warnings/errors. Always use 1002 0x prefix for hex output, always use %u for unsigned integer decimal output. 1003 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400 1004 invocations.) These invocations were converted from the original 1005 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 1006 1007 Example Code and Data Size: These are the sizes for the OS-independent 1008 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1009 debug version of the code includes the debug output trace mechanism and has a 1010 much larger code and data size. 1011 1012 Previous Release: 1013 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 1014 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 1015 Current Release: 1016 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 1017 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 1018 1019 2) iASL Compiler/Disassembler and Tools: 1020 1021 iASL: Implemented typechecking support for static (non-control method) 1022 predefined named objects that are declared with the Name() operator. For 1023 example, the type of this object is now validated to be of type Integer: 1024 Name(_BBN, 1). This change migrates the compiler to using the core predefined 1025 name table instead of maintaining a local version. Added a new file, 1026 aslpredef.c. ACPICA BZ 832. 1027 1028 Disassembler: Added support for the ACPI 4.0 MCHI table. 1029 1030 ---------------------------------------- 1031 21 January 2010. Summary of changes for version 20100121: 1032 1033 1) ACPI CA Core Subsystem: 1034 1035 Added the 2010 copyright to all module headers and signons. This affects 1036 virtually every file in the ACPICA core subsystem, the iASL compiler, the 1037 tools/utilities, and the test suites. 1038 1039 Implemented a change to the AcpiGetDevices interface to eliminate unnecessary 1040 invocations of the _STA method. In the case where a specific _HID is 1041 requested, do not run _STA until a _HID match is found. This eliminates 1042 potentially dozens of _STA calls during a search for a particular device/HID, 1043 which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 1044 1045 Implemented an additional repair for predefined method return values. Attempt 1046 to repair unexpected NULL elements within returned Package objects. Create an 1047 Integer of value zero, a NULL String, or a zero-length Buffer as appropriate. 1048 ACPICA BZ 818. Lin Ming, Bob Moore. 1049 1050 Removed the obsolete ACPI_INTEGER data type. This type was introduced as the 1051 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 (with 1052 64-bit AML integers). It is now obsolete and this change removes it from the 1053 ACPICA code base, replaced by UINT64. The original typedef has been retained 1054 for now for compatibility with existing device driver code. ACPICA BZ 824. 1055 1056 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in 1057 the parse tree object. 1058 1059 Added additional warning options for the gcc-4 generation. Updated the source 1060 accordingly. This includes some code restructuring to eliminate unreachable 1061 code, elimination of some gotos, elimination of unused return values, some 1062 additional casting, and removal of redundant declarations. 1063 1064 Example Code and Data Size: These are the sizes for the OS-independent 1065 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1066 debug version of the code includes the debug output trace mechanism and has a 1067 much larger code and data size. 1068 1069 Previous Release: 1070 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 1071 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 1072 Current Release: 1073 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 1074 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 1075 1076 2) iASL Compiler/Disassembler and Tools: 1077 1078 No functional changes for this release. 1079 1080 ---------------------------------------- 1081 14 December 2009. Summary of changes for version 20091214: 1082 1083 1) ACPI CA Core Subsystem: 1084 1085 Enhanced automatic data type conversions for predefined name repairs. This 1086 change expands the automatic repairs/conversions for predefined name return 1087 values to make Integers, Strings, and Buffers fully interchangeable. Also, a 1088 Buffer can be converted to a Package of Integers if necessary. The nsrepair.c 1089 module was completely restructured. Lin Ming, Bob Moore. 1090 1091 Implemented automatic removal of null package elements during predefined name 1092 repairs. This change will automatically remove embedded and trailing NULL 1093 package elements from returned package objects that are defined to contain a 1094 variable number of sub-packages. The driver is then presented with a package 1095 with no null elements to deal with. ACPICA BZ 819. 1096 1097 Implemented a repair for the predefined _FDE and _GTM names. The expected 1098 return value for both names is a Buffer of 5 DWORDs. This repair fixes two 1099 possible problems (both seen in the field), where a package of integers is 1100 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk Kim. 1101 1102 Implemented additional module-level code support. This change will properly 1103 execute module-level code that is not at the root of the namespace (under a 1104 Device object, etc.). Now executes the code within the current scope instead 1105 of the root. ACPICA BZ 762. Lin Ming. 1106 1107 Fixed possible mutex acquisition errors when running _REG methods. Fixes a 1108 problem where mutex errors can occur when running a _REG method that is in 1109 the same scope as a method-defined operation region or an operation region 1110 under a module-level IF block. This type of code is rare, so the problem has 1111 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 1112 1113 Fixed a possible memory leak during module-level code execution. An object 1114 could be leaked for each block of executed module-level code if the 1115 interpreter slack mode is enabled This change deletes any implicitly returned 1116 object from the module-level code block. Lin Ming. 1117 1118 Removed messages for successful predefined repair(s). The repair mechanism 1119 was considered too wordy. Now, messages are only unconditionally emitted if 1120 the return object cannot be repaired. Existing messages for successful 1121 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827. 1122 1123 Example Code and Data Size: These are the sizes for the OS-independent 1124 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1125 debug version of the code includes the debug output trace mechanism and has a 1126 much larger code and data size. 1127 1128 Previous Release: 1129 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 1130 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 1131 Current Release: 1132 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 1133 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 1134 1135 2) iASL Compiler/Disassembler and Tools: 1136 1137 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC files 1138 were no longer automatically removed at the termination of the compile. 1139 1140 acpiexec: Implemented the -f option to specify default region fill value. 1141 This option specifies the value used to initialize buffers that simulate 1142 operation regions. Default value is zero. Useful for debugging problems that 1143 depend on a specific initial value for a region or field. 1144 1145 ---------------------------------------- 1146 12 November 2009. Summary of changes for version 20091112: 1147 1148 1) ACPI CA Core Subsystem: 1149 1150 Implemented a post-order callback to AcpiWalkNamespace. The existing 1151 interface only has a pre-order callback. This change adds an additional 1152 parameter for a post-order callback which will be more useful for bus scans. 1153 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 1154 1155 Modified the behavior of the operation region memory mapping cache for 1156 SystemMemory. Ensure that the memory mappings created for operation regions 1157 do not cross 4K page boundaries. Crossing a page boundary while mapping 1158 regions can cause kernel warnings on some hosts if the pages have different 1159 attributes. Such regions are probably BIOS bugs, and this is the workaround. 1160 Linux BZ 14445. Lin Ming. 1161 1162 Implemented an automatic repair for predefined methods that must return 1163 sorted lists. This change will repair (by sorting) packages returned by _ALR, 1164 _PSS, and _TSS. Drivers can now assume that the packages are correctly sorted 1165 and do not contain NULL package elements. Adds one new file, 1166 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 1167 1168 Fixed a possible fault during predefined name validation if a return Package 1169 object contains NULL elements. Also adds a warning if a NULL element is 1170 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement may 1171 include repair or removal of all such NULL elements where possible. 1172 1173 Implemented additional module-level executable AML code support. This change 1174 will execute module-level code that is not at the root of the namespace 1175 (under a Device object, etc.) at table load time. Module-level executable AML 1176 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 1177 1178 Implemented a new internal function to create Integer objects. This function 1179 simplifies miscellaneous object creation code. ACPICA BZ 823. 1180 1181 Reduced the severity of predefined repair messages, Warning to Info. Since 1182 the object was successfully repaired, a warning is too severe. Reduced to an 1183 info message for now. These messages may eventually be changed to debug-only. 1184 ACPICA BZ 812. 1185 1186 Example Code and Data Size: These are the sizes for the OS-independent 1187 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1188 debug version of the code includes the debug output trace mechanism and has a 1189 much larger code and data size. 1190 1191 Previous Release: 1192 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 1193 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 1194 Current Release: 1195 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 1196 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 1197 1198 2) iASL Compiler/Disassembler and Tools: 1199 1200 iASL: Implemented Switch() with While(1) so that Break works correctly. This 1201 change correctly implements the Switch operator with a surrounding While(1) 1202 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 1203 1204 iASL: Added a message if a package initializer list is shorter than package 1205 length. Adds a new remark for a Package() declaration if an initializer list 1206 exists, but is shorter than the declared length of the package. Although 1207 technically legal, this is probably a coding error and it is seen in the 1208 field. ACPICA BZ 815. Lin Ming, Bob Moore. 1209 1210 iASL: Fixed a problem where the compiler could fault after the maximum number 1211 of errors was reached (200). 1212 1213 acpixtract: Fixed a possible warning for pointer cast if the compiler warning 1214 level set very high. 1215 1216 ---------------------------------------- 1217 13 October 2009. Summary of changes for version 20091013: 1218 1219 1) ACPI CA Core Subsystem: 1220 1221 Fixed a problem where an Operation Region _REG method could be executed more 1222 than once. If a custom address space handler is installed by the host before 1223 the "initialize operation regions" phase of the ACPICA initialization, any 1224 _REG methods for that address space could be executed twice. This change 1225 fixes the problem. ACPICA BZ 427. Lin Ming. 1226 1227 Fixed a possible memory leak for the Scope() ASL operator. When the exact 1228 invocation of "Scope(\)" is executed (change scope to root), one internal 1229 operand object was leaked. Lin Ming. 1230 1231 Implemented a run-time repair for the _MAT predefined method. If the _MAT 1232 return value is defined as a Field object in the AML, and the field 1233 size is less than or equal to the default width of an integer (32 or 64),_MAT 1234 can incorrectly return an Integer instead of a Buffer. ACPICA now 1235 automatically repairs this problem. ACPICA BZ 810. 1236 1237 Implemented a run-time repair for the _BIF and _BIX predefined methods. The 1238 "OEM Information" field is often incorrectly returned as an Integer with 1239 value zero if the field is not supported by the platform. This is due to an 1240 ambiguity in the ACPI specification. The field should always be a string. 1241 ACPICA now automatically repairs this problem by returning a NULL string 1242 within the returned Package. ACPICA BZ 807. 1243 1244 Example Code and Data Size: These are the sizes for the OS-independent 1245 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1246 debug version of the code includes the debug output trace mechanism and has a 1247 much larger code and data size. 1248 1249 Previous Release: 1250 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 1251 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 1252 Current Release: 1253 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 1254 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 1255 1256 2) iASL Compiler/Disassembler and Tools: 1257 1258 Disassembler: Fixed a problem where references to external symbols that 1259 contained one or more parent-prefixes (carats) were not handled correctly, 1260 possibly causing a fault. ACPICA BZ 806. Lin Ming. 1261 1262 Disassembler: Restructured the code so that all functions that handle 1263 external symbols are in a single module. One new file is added, 1264 common/dmextern.c. 1265 1266 AML Debugger: Added a max count argument for the Batch command (which 1267 executes multiple predefined methods within the namespace.) 1268 1269 iASL: Updated the compiler documentation (User Reference.) Available at 1270 http://www.acpica.org/documentation/. ACPICA BZ 750. 1271 1272 AcpiXtract: Updated for Lint and other formatting changes. Close all open 1273 files. 1274 1275 ---------------------------------------- 1276 03 September 2009. Summary of changes for version 20090903: 1277 1278 1) ACPI CA Core Subsystem: 1279 1280 For Windows Vista compatibility, added the automatic execution of an _INI 1281 method located at the namespace root (\_INI). This method is executed at 1282 table load time. This support is in addition to the automatic execution of 1283 \_SB._INI. Lin Ming. 1284 1285 Fixed a possible memory leak in the interpreter for AML package objects if 1286 the package initializer list is longer than the defined size of the package. 1287 This apparently can only happen if the BIOS changes the package size on the 1288 fly (seen in a _PSS object), as ASL compilers do not allow this. The 1289 interpreter will truncate the package to the defined size (and issue an error 1290 message), but previously could leave the extra objects undeleted if they were 1291 pre-created during the argument processing (such is the case if the package 1292 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 1293 1294 Fixed a problem seen when a Buffer or String is stored to itself via ASL. 1295 This has been reported in the field. Previously, ACPICA would zero out the 1296 buffer/string. Now, the operation is treated as a noop. Provides Windows 1297 compatibility. ACPICA BZ 803. Lin Ming. 1298 1299 Removed an extraneous error message for ASL constructs of the form 1300 Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements 1301 are seen in many BIOSs and are once again treated as NOOPs and no error is 1302 emitted when they are encountered. ACPICA BZ 785. 1303 1304 Fixed an extraneous warning message if a _DSM reserved method returns a 1305 Package object. _DSM can return any type of object, so validation on the 1306 return type cannot be performed. ACPICA BZ 802. 1307 1308 Example Code and Data Size: These are the sizes for the OS-independent 1309 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1310 debug version of the code includes the debug output trace mechanism and has a 1311 much larger code and data size. 1312 1313 Previous Release: 1314 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 1315 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 1316 Current Release: 1317 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 1318 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 1319 1320 2) iASL Compiler/Disassembler and Tools: 1321 1322 iASL: Fixed a problem with the use of the Alias operator and Resource 1323 Templates. The correct alias is now constructed and no error is emitted. 1324 ACPICA BZ 738. 1325 1326 iASL: Implemented the -I option to specify additional search directories for 1327 include files. Allows multiple additional search paths for include files. 1328 Directories are searched in the order specified on the command line (after 1329 the local directory is searched.) ACPICA BZ 800. 1330 1331 iASL: Fixed a problem where the full pathname for include files was not 1332 emitted for warnings/errors. This caused the IDE support to not work 1333 properly. ACPICA BZ 765. 1334 1335 iASL: Implemented the -@ option to specify a Windows-style response file 1336 containing additional command line options. ACPICA BZ 801. 1337 1338 AcpiExec: Added support to load multiple AML files simultaneously (such as a 1339 DSDT and multiple SSDTs). Also added support for wildcards within the AML 1340 pathname. These features allow all machine tables to be easily loaded and 1341 debugged together. ACPICA BZ 804. 1342 1343 Disassembler: Added missing support for disassembly of HEST table Error Bank 1344 subtables. 1345 1346 ---------------------------------------- 1347 30 July 2009. Summary of changes for version 20090730: 1348 1349 The ACPI 4.0 implementation for ACPICA is complete with this release. 1350 1351 1) ACPI CA Core Subsystem: 1352 1353 ACPI 4.0: Added header file support for all new and changed ACPI tables. 1354 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new 1355 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT, 1356 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There 1357 have been some ACPI 4.0 changes to other existing tables. Split the large 1358 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 1359 1360 ACPI 4.0: Implemented predefined name validation for all new names. There are 1361 31 new names in ACPI 4.0. The predefined validation module was split into two 1362 files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 1363 1364 Implemented support for so-called "module-level executable code". This is 1365 executable AML code that exists outside of any control method and is intended 1366 to be executed at table load time. Although illegal since ACPI 2.0, this type 1367 of code still exists and is apparently still being created. Blocks of this 1368 code are now detected and executed as intended. Currently, the code blocks 1369 must exist under either an If, Else, or While construct; these are the 1370 typical cases seen in the field. ACPICA BZ 762. Lin Ming. 1371 1372 Implemented an automatic dynamic repair for predefined names that return 1373 nested Package objects. This applies to predefined names that are defined to 1374 return a variable-length Package of sub-packages. If the number of sub- 1375 packages is one, BIOS code is occasionally seen that creates a simple single 1376 package with no sub-packages. This code attempts to fix the problem by 1377 wrapping a new package object around the existing package. These methods can 1378 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ 1379 790. 1380 1381 Fixed a regression introduced in 20090625 for the AcpiGetDevices interface. 1382 The _HID/_CID matching was broken and no longer matched IDs correctly. ACPICA 1383 BZ 793. 1384 1385 Fixed a problem with AcpiReset where the reset would silently fail if the 1386 register was one of the protected I/O ports. AcpiReset now bypasses the port 1387 validation mechanism. This may eventually be driven into the AcpiRead/Write 1388 interfaces. 1389 1390 Fixed a regression related to the recent update of the AcpiRead/Write 1391 interfaces. A sleep/suspend could fail if the optional PM2 Control register 1392 does not exist during an attempt to write the Bus Master Arbitration bit. 1393 (However, some hosts already delete the code that writes this bit, and the 1394 code may in fact be obsolete at this date.) ACPICA BZ 799. 1395 1396 Fixed a problem where AcpiTerminate could fault if inadvertently called twice 1397 in succession. ACPICA BZ 795. 1398 1399 Example Code and Data Size: These are the sizes for the OS-independent 1400 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1401 debug version of the code includes the debug output trace mechanism and has a 1402 much larger code and data size. 1403 1404 Previous Release: 1405 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 1406 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 1407 Current Release: 1408 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 1409 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 1410 1411 2) iASL Compiler/Disassembler and Tools: 1412 1413 ACPI 4.0: Implemented disassembler support for all new ACPI tables and 1414 changes to existing tables. ACPICA BZ 775. 1415 1416 ---------------------------------------- 1417 25 June 2009. Summary of changes for version 20090625: 1418 1419 The ACPI 4.0 Specification was released on June 16 and is available at 1420 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 1421 continue for the next few releases. 1422 1423 1) ACPI CA Core Subsystem: 1424 1425 ACPI 4.0: Implemented interpreter support for the IPMI operation region 1426 address space. Includes support for bi-directional data buffers and an IPMI 1427 address space handler (to be installed by an IPMI device driver.) ACPICA BZ 1428 773. Lin Ming. 1429 1430 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes 1431 support in both the header files and the disassembler. 1432 1433 Completed a major update for the AcpiGetObjectInfo external interface. 1434 Changes include: 1435 - Support for variable, unlimited length HID, UID, and CID strings. 1436 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.) 1437 - Call the _SxW power methods on behalf of a device object. 1438 - Determine if a device is a PCI root bridge. 1439 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 1440 These changes will require an update to all callers of this interface. See 1441 the updated ACPICA Programmer Reference for details. One new source file has 1442 been added - utilities/utids.c. ACPICA BZ 368, 780. 1443 1444 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 1445 transfers. The Value parameter has been extended from 32 bits to 64 bits in 1446 order to support new ACPI 4.0 tables. These changes will require an update to 1447 all callers of these interfaces. See the ACPICA Programmer Reference for 1448 details. ACPICA BZ 768. 1449 1450 Fixed several problems with AcpiAttachData. The handler was not invoked when 1451 the host node was deleted. The data sub-object was not automatically deleted 1452 when the host node was deleted. The interface to the handler had an unused 1453 parameter, this was removed. ACPICA BZ 778. 1454 1455 Enhanced the function that dumps ACPI table headers. All non-printable 1456 characters in the string fields are now replaced with '?' (Signature, OemId, 1457 OemTableId, and CompilerId.) ACPI tables with non-printable characters in 1458 these fields are occasionally seen in the field. ACPICA BZ 788. 1459 1460 Fixed a problem with predefined method repair code where the code that 1461 attempts to repair/convert an object of incorrect type is only executed on 1462 the first time the predefined method is called. The mechanism that disables 1463 warnings on subsequent calls was interfering with the repair mechanism. 1464 ACPICA BZ 781. 1465 1466 Fixed a possible memory leak in the predefined validation/repair code when a 1467 buffer is automatically converted to an expected string object. 1468 1469 Removed obsolete 16-bit files from the distribution and from the current git 1470 tree head. ACPICA BZ 776. 1471 1472 Example Code and Data Size: These are the sizes for the OS-independent 1473 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1474 debug version of the code includes the debug output trace mechanism and has a 1475 much larger code and data size. 1476 1477 Previous Release: 1478 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 1479 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 1480 Current Release: 1481 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 1482 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 1483 1484 2) iASL Compiler/Disassembler and Tools: 1485 1486 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 1487 operation region keyword. ACPICA BZ 771, 772. Lin Ming. 1488 1489 ACPI 4.0: iASL - implemented compile-time validation support for all new 1490 predefined names and control methods (31 total). ACPICA BZ 769. 1491 1492 ---------------------------------------- 1493 21 May 2009. Summary of changes for version 20090521: 1494 1495 1) ACPI CA Core Subsystem: 1496 1497 Disabled the preservation of the SCI enable bit in the PM1 control register. 1498 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be 1499 a "preserved" bit - "OSPM always preserves this bit position", section 1500 4.7.3.2.1. However, some machines fail if this bit is in fact preserved 1501 because the bit needs to be explicitly set by the OS as a workaround. No 1502 machines fail if the bit is not preserved. Therefore, ACPICA no longer 1503 attempts to preserve this bit. 1504 1505 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 1506 incorrectly formed _PRT package could cause a fault. Added validation to 1507 ensure that each package element is actually a sub-package. 1508 1509 Implemented a new interface to install or override a single control method, 1510 AcpiInstallMethod. This interface is useful when debugging in order to repair 1511 an existing method or to install a missing method without having to override 1512 the entire ACPI table. See the ACPICA Programmer Reference for use and 1513 examples. Lin Ming, Bob Moore. 1514 1515 Fixed several reference count issues with the DdbHandle object that is 1516 created from a Load or LoadTable operator. Prevent premature deletion of the 1517 object. Also, mark the object as invalid once the table has been unloaded. 1518 This is needed because the handle itself may not be deleted after the table 1519 unload, depending on whether it has been stored in a named object by the 1520 caller. Lin Ming. 1521 1522 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 1523 mutexes of the same sync level are acquired but then not released in strict 1524 opposite order, the internally maintained Current Sync Level becomes confused 1525 and can cause subsequent execution errors. ACPICA BZ 471. 1526 1527 Changed the allowable release order for ASL mutex objects. The ACPI 4.0 1528 specification has been changed to make the SyncLevel for mutex objects more 1529 useful. When releasing a mutex, the SyncLevel of the mutex must now be the 1530 same as the current sync level. This makes more sense than the previous rule 1531 (SyncLevel less than or equal). This change updates the code to match the 1532 specification. 1533 1534 Fixed a problem with the local version of the AcpiOsPurgeCache function. The 1535 (local) cache must be locked during all cache object deletions. Andrew 1536 Baumann. 1537 1538 Updated the Load operator to use operation region interfaces. This replaces 1539 direct memory mapping with region access calls. Now, all region accesses go 1540 through the installed region handler as they should. 1541 1542 Simplified and optimized the NsGetNextNode function. Reduced parameter count 1543 and reduced code for this frequently used function. 1544 1545 Example Code and Data Size: These are the sizes for the OS-independent 1546 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1547 debug version of the code includes the debug output trace mechanism and has a 1548 much larger code and data size. 1549 1550 Previous Release: 1551 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 1552 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 1553 Current Release: 1554 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 1555 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 1556 1557 2) iASL Compiler/Disassembler and Tools: 1558 1559 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems 1560 with sub-table disassembly and handling invalid sub-tables. Attempt recovery 1561 after an invalid sub-table ID. 1562 1563 ---------------------------------------- 1564 22 April 2009. Summary of changes for version 20090422: 1565 1566 1) ACPI CA Core Subsystem: 1567 1568 Fixed a compatibility issue with the recently released I/O port protection 1569 mechanism. For windows compatibility, 1) On a port protection violation, 1570 simply ignore the request and do not return an exception (allow the control 1571 method to continue execution.) 2) If only part of the request overlaps a 1572 protected port, read/write the individual ports that are not protected. Linux 1573 BZ 13036. Lin Ming 1574 1575 Enhanced the execution of the ASL/AML BreakPoint operator so that it actually 1576 breaks into the AML debugger if the debugger is present. This matches the 1577 ACPI-defined behavior. 1578 1579 Fixed several possible warnings related to the use of the configurable 1580 ACPI_THREAD_ID. This type can now be configured as either an integer or a 1581 pointer with no warnings. Also fixes several warnings in printf-like 1582 statements for the 64-bit build when the type is configured as a pointer. 1583 ACPICA BZ 766, 767. 1584 1585 Fixed a number of possible warnings when compiling with gcc 4+ (depending on 1586 warning options.) Examples include printf formats, aliasing, unused globals, 1587 missing prototypes, missing switch default statements, use of non-ANSI 1588 library functions, use of non-ANSI constructs. See generate/unix/Makefile for 1589 a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 1590 1591 Example Code and Data Size: These are the sizes for the OS-independent 1592 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1593 debug version of the code includes the debug output trace mechanism and has a 1594 much larger code and data size. 1595 1596 Previous Release: 1597 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 1598 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 1599 Current Release: 1600 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 1601 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 1602 1603 2) iASL Compiler/Disassembler and Tools: 1604 1605 iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on 1606 the 64-bit build. 1607 1608 iASL: Fixed a problem where the Unix/Linux versions of the compiler could not 1609 correctly digest Windows/DOS formatted files (with CR/LF). 1610 1611 iASL: Added a new option for "quiet mode" (-va) that produces only the 1612 compilation summary, not individual errors and warnings. Useful for large 1613 batch compilations. 1614 1615 AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex 1616 timeout that can be used to detect hang conditions during execution of AML 1617 code (includes both internal semaphores and AML-defined mutexes and events.) 1618 1619 Added new makefiles for the generation of acpica in a generic unix-like 1620 environment. These makefiles are intended to generate the acpica tools and 1621 utilities from the original acpica git source tree structure. 1622 1623 Test Suites: Updated and cleaned up the documentation files. Updated the 1624 copyrights to 2009, affecting all source files. Use the new version of iASL 1625 with quiet mode. Increased the number of available semaphores in the Windows 1626 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added 1627 an alternate implementation of the semaphore timeout to allow aslts to 1628 execute fully on Cygwin. 1629 1630 ---------------------------------------- 1631 20 March 2009. Summary of changes for version 20090320: 1632 1633 1) ACPI CA Core Subsystem: 1634 1635 Fixed a possible race condition between AcpiWalkNamespace and dynamic table 1636 unloads. Added a reader/writer locking mechanism to allow multiple concurrent 1637 namespace walks (readers), but block a dynamic table unload until it can gain 1638 exclusive write access to the namespace. This fixes a problem where a table 1639 unload could (possibly catastrophically) delete the portion of the namespace 1640 that is currently being examined by a walk. Adds a new file, utlock.c, that 1641 implements the reader/writer lock mechanism. ACPICA BZ 749. 1642 1643 Fixed a regression introduced in version 20090220 where a change to the FADT 1644 handling could cause the ACPICA subsystem to access non-existent I/O ports. 1645 1646 Modified the handling of FADT register and table (FACS/DSDT) addresses. The 1647 FADT can contain both 32-bit and 64-bit versions of these addresses. 1648 Previously, the 64-bit versions were favored, meaning that if both 32 and 64 1649 versions were valid, but not equal, the 64-bit version was used. This was 1650 found to cause some machines to fail. Now, in this case, the 32-bit version 1651 is used instead. This now matches the Windows behavior. 1652 1653 Implemented a new mechanism to protect certain I/O ports. Provides Microsoft 1654 compatibility and protects the standard PC I/O ports from access via AML 1655 code. Adds a new file, hwvalid.c 1656 1657 Fixed a possible extraneous warning message from the FADT support. The 1658 message warns of a 32/64 length mismatch between the legacy and GAS 1659 definitions for a register. 1660 1661 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is 1662 made obsolete by the port protection mechanism above. It was previously used 1663 to validate the entire address range of an operation region, which could be 1664 incorrect if the range included illegal ports, but fields within the 1665 operation region did not actually access those ports. Validation is now 1666 performed on a per-field basis instead of the entire region. 1667 1668 Modified the handling of the PM1 Status Register ignored bit (bit 11.) 1669 Ignored bits must be "preserved" according to the ACPI spec. Usually, this 1670 means a read/modify/write when writing to the register. However, for status 1671 registers, writing a one means clear the event. Writing a zero means preserve 1672 the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec, 1673 and the ACPICA code now simply always writes a zero to the ignored bit. 1674 1675 Modified the handling of ignored bits for the PM1 A/B Control Registers. As 1676 per the ACPI specification, for the control registers, preserve 1677 (read/modify/write) all bits that are defined as either reserved or ignored. 1678 1679 Updated the handling of write-only bits in the PM1 A/B Control Registers. 1680 When reading the register, zero the write-only bits as per the ACPI spec. 1681 ACPICA BZ 443. Lin Ming. 1682 1683 Removed "Linux" from the list of supported _OSI strings. Linux no longer 1684 wants to reply true to this request. The Windows strings are the only paths 1685 through the AML that are tested and known to work properly. 1686 1687 Previous Release: 1688 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 1689 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 1690 Current Release: 1691 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 1692 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 1693 1694 2) iASL Compiler/Disassembler and Tools: 1695 1696 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and 1697 aetables.c 1698 1699 ---------------------------------------- 1700 20 February 2009. Summary of changes for version 20090220: 1701 1702 1) ACPI CA Core Subsystem: 1703 1704 Optimized the ACPI register locking. Removed locking for reads from the ACPI 1705 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is 1706 not required when reading the single-bit registers. The 1707 AcpiGetRegisterUnlocked function is no longer needed and has been removed. 1708 This will improve performance for reads on these registers. ACPICA BZ 760. 1709 1710 Fixed the parameter validation for AcpiRead/Write. Now return 1711 AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if 1712 the register has an address of zero. Previously, these cases simply returned 1713 AE_OK. For optional registers such as PM1B status/enable/control, the caller 1714 should check for a valid register address before calling. ACPICA BZ 748. 1715 1716 Renamed the external ACPI bit register access functions. Renamed 1717 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 1718 functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister. 1719 Also, restructured the code for these functions by simplifying the code path 1720 and condensing duplicate code to reduce code size. 1721 1722 Added new functions to transparently handle the possibly split PM1 A/B 1723 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions 1724 now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ 1725 746. 1726 1727 Added a function to handle the PM1 control registers, AcpiHwWritePm1Control. 1728 This function writes both of the PM1 control registers (A/B). These registers 1729 are different than the PM1 A/B status and enable registers in that different 1730 values can be written to the A/B registers. Most notably, the SLP_TYP bits 1731 can be different, as per the values returned from the _Sx predefined methods. 1732 1733 Removed an extra register write within AcpiHwClearAcpiStatus. This function 1734 was writing an optional PM1B status register twice. The existing call to the 1735 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B 1736 register. ACPICA BZ 751. 1737 1738 Split out the PM1 Status registers from the FADT. Added new globals for these 1739 registers (A/B), similar to the way the PM1 Enable registers are handled. 1740 Instead of overloading the FADT Event Register blocks. This makes the code 1741 clearer and less prone to error. 1742 1743 Fixed the warning message for when the platform contains too many ACPI tables 1744 for the default size of the global root table data structure. The calculation 1745 for the truncation value was incorrect. 1746 1747 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 1748 obsolete macro, since it is now a simple reference to ->common.type. There 1749 were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 1750 1751 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 1752 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 1753 simply SLEEP_TYPE. ACPICA BZ 754. 1754 1755 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 1756 function is only needed on 64-bit host operating systems and is thus not 1757 included for 32-bit hosts. 1758 1759 Debug output: print the input and result for invocations of the _OSI reserved 1760 control method via the ACPI_LV_INFO debug level. Also, reduced some of the 1761 verbosity of this debug level. Len Brown. 1762 1763 Example Code and Data Size: These are the sizes for the OS-independent 1764 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1765 debug version of the code includes the debug output trace mechanism and has a 1766 much larger code and data size. 1767 1768 Previous Release: 1769 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 1770 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 1771 Current Release: 1772 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 1773 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 1774 1775 2) iASL Compiler/Disassembler and Tools: 1776 1777 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 1778 various legal performance profiles. 1779 1780 ---------------------------------------- 1781 23 January 2009. Summary of changes for version 20090123: 1782 1783 1) ACPI CA Core Subsystem: 1784 1785 Added the 2009 copyright to all module headers and signons. This affects 1786 virtually every file in the ACPICA core subsystem, the iASL compiler, and 1787 the tools/utilities. 1788 1789 Implemented a change to allow the host to override any ACPI table, including 1790 dynamically loaded tables. Previously, only the DSDT could be replaced by the 1791 host. With this change, the AcpiOsTableOverride interface is called for each 1792 table found in the RSDT/XSDT during ACPICA initialization, and also whenever 1793 a table is dynamically loaded via the AML Load operator. 1794 1795 Updated FADT flag definitions, especially the Boot Architecture flags. 1796 1797 Debugger: For the Find command, automatically pad the input ACPI name with 1798 underscores if the name is shorter than 4 characters. This enables a match 1799 with the actual namespace entry which is itself padded with underscores. 1800 1801 Example Code and Data Size: These are the sizes for the OS-independent 1802 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1803 debug version of the code includes the debug output trace mechanism and has a 1804 much larger code and data size. 1805 1806 Previous Release: 1807 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 1808 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 1809 Current Release: 1810 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 1811 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 1812 1813 2) iASL Compiler/Disassembler and Tools: 1814 1815 Fix build error under Bison-2.4. 1816 1817 Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture 1818 flags. Now decode all flags, regardless of the FADT version. Flag output 1819 includes the FADT version which first defined each flag. 1820 1821 The iASL -g option now dumps the RSDT to a file (in addition to the FADT and 1822 DSDT). Windows only. 1823 1824 ---------------------------------------- 1825 04 December 2008. Summary of changes for version 20081204: 1826 1827 1) ACPI CA Core Subsystem: 1828 1829 The ACPICA Programmer Reference has been completely updated and revamped for 1830 this release. This includes updates to the external interfaces, OSL 1831 interfaces, the overview sections, and the debugger reference. 1832 1833 Several new ACPICA interfaces have been implemented and documented in the 1834 programmer reference: 1835 AcpiReset - Writes the reset value to the FADT-defined reset register. 1836 AcpiDisableAllGpes - Disable all available GPEs. 1837 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 1838 AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 1839 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 1840 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 1841 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 1842 1843 Most of the public ACPI hardware-related interfaces have been moved to a new 1844 file, components/hardware/hwxface.c 1845 1846 Enhanced the FADT parsing and low-level ACPI register access: The ACPI 1847 register lengths within the FADT are now used, and the low level ACPI 1848 register access no longer hardcodes the ACPI register lengths. Given that 1849 there may be some risk in actually trusting the FADT register lengths, a run- 1850 time option was added to fall back to the default hardcoded lengths if the 1851 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 1852 option is set to true for now, and a warning is issued if a suspicious FADT 1853 register length is overridden with the default value. 1854 1855 Fixed a reference count issue in NsRepairObject. This problem was introduced 1856 in version 20081031 as part of a fix to repair Buffer objects within 1857 Packages. Lin Ming. 1858 1859 Added semaphore support to the Linux/Unix application OS-services layer 1860 (OSL). ACPICA BZ 448. Lin Ming. 1861 1862 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will 1863 be implemented in the OSL, or will binary semaphores be used instead. 1864 1865 Example Code and Data Size: These are the sizes for the OS-independent 1866 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1867 debug version of the code includes the debug output trace mechanism and has a 1868 much larger code and data size. 1869 1870 Previous Release: 1871 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 1872 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 1873 Current Release: 1874 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 1875 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 1876 1877 2) iASL Compiler/Disassembler and Tools: 1878 1879 iASL: Completed the '-e' option to include additional ACPI tables in order to 1880 aid with disassembly and External statement generation. ACPICA BZ 742. Lin 1881 Ming. 1882 1883 iASL: Removed the "named object in while loop" error. The compiler cannot 1884 determine how many times a loop will execute. ACPICA BZ 730. 1885 1886 Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA 1887 BZ 743. 1888 1889 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG). 1890 1891 ---------------------------------------- 1892 31 October 2008. Summary of changes for version 20081031: 1893 1894 1) ACPI CA Core Subsystem: 1895 1896 Restructured the ACPICA header files into public/private. acpi.h now includes 1897 only the "public" acpica headers. All other acpica headers are "private" and 1898 should not be included by acpica users. One new file, accommon.h is used to 1899 include the commonly used private headers for acpica code generation. Future 1900 plans include moving all private headers to a new subdirectory. 1901 1902 Implemented an automatic Buffer->String return value conversion for 1903 predefined ACPI methods. For these methods (such as _BIF), added automatic 1904 conversion for return objects that are required to be a String, but a Buffer 1905 was found instead. This can happen when reading string battery data from an 1906 operation region, because it used to be difficult to convert the data from 1907 buffer to string from within the ASL. Ensures that the host OS is provided 1908 with a valid null-terminated string. Linux BZ 11822. 1909 1910 Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector 1911 into two: one for the 32-bit vector, another for the 64-bit vector. This is 1912 required because the host OS must setup the wake much differently for each 1913 vector (real vs. protected mode, etc.) and the interface itself should not be 1914 deciding which vector to use. Also, eliminated the GetFirmwareWakingVector 1915 interface, as it served no purpose (only the firmware reads the vector, OS 1916 only writes the vector.) ACPICA BZ 731. 1917 1918 Implemented a mechanism to escape infinite AML While() loops. Added a loop 1919 counter to force exit from AML While loops if the count becomes too large. 1920 This can occur in poorly written AML when the hardware does not respond 1921 within a while loop and the loop does not implement a timeout. The maximum 1922 loop count is configurable. A new exception code is returned when a loop is 1923 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 1924 1925 Optimized the execution of AML While loops. Previously, a control state 1926 object was allocated and freed for each execution of the loop. The 1927 optimization is to simply reuse the control state for each iteration. This 1928 speeds up the raw loop execution time by about 5%. 1929 1930 Enhanced the implicit return mechanism. For Windows compatibility, return an 1931 implicit integer of value zero for methods that contain no executable code. 1932 Such methods are seen in the field as stubs (presumably), and can cause 1933 drivers to fail if they expect a return value. Lin Ming. 1934 1935 Allow multiple backslashes as root prefixes in namepaths. In a fully 1936 qualified namepath, allow multiple backslash prefixes. This can happen (and 1937 is seen in the field) because of the use of a double-backslash in strings 1938 (since backslash is the escape character) causing confusion. ACPICA BZ 739 1939 Lin Ming. 1940 1941 Emit a warning if two different FACS or DSDT tables are discovered in the 1942 FADT. Checks if there are two valid but different addresses for the FACS and 1943 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 1944 1945 Consolidated the method argument count validation code. Merged the code that 1946 validates control method argument counts into the predefined validation 1947 module. Eliminates possible multiple warnings for incorrect argument counts. 1948 1949 Implemented ACPICA example code. Includes code for ACPICA initialization, 1950 handler installation, and calling a control method. Available at 1951 source/tools/examples. 1952 1953 Added a global pointer for FACS table to simplify internal FACS access. Use 1954 the global pointer instead of using AcpiGetTableByIndex for each FACS access. 1955 This simplifies the code for the Global Lock and the Firmware Waking 1956 Vector(s). 1957 1958 Example Code and Data Size: These are the sizes for the OS-independent 1959 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1960 debug version of the code includes the debug output trace mechanism and has a 1961 much larger code and data size. 1962 1963 Previous Release: 1964 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 1965 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 1966 Current Release: 1967 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 1968 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 1969 1970 2) iASL Compiler/Disassembler and Tools: 1971 1972 iASL: Improved disassembly of external method calls. Added the -e option to 1973 allow the inclusion of additional ACPI tables to help with the disassembly of 1974 method invocations and the generation of external declarations during the 1975 disassembly. Certain external method invocations cannot be disassembled 1976 properly without the actual declaration of the method. Use the -e option to 1977 include the table where the external method(s) are actually declared. Most 1978 useful for disassembling SSDTs that make method calls back to the master 1979 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d 1980 -e dsdt.aml ssdt1.aml 1981 1982 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 1983 problem where the use of an alias within a namepath would result in a not 1984 found error or cause the compiler to fault. Also now allows forward 1985 references from the Alias operator itself. ACPICA BZ 738. 1986 1987 ---------------------------------------- 1988 26 September 2008. Summary of changes for version 20080926: 1989 1990 1) ACPI CA Core Subsystem: 1991 1992 Designed and implemented a mechanism to validate predefined ACPI methods and 1993 objects. This code validates the predefined ACPI objects (objects whose names 1994 start with underscore) that appear in the namespace, at the time they are 1995 evaluated. The argument count and the type of the returned object are 1996 validated against the ACPI specification. The purpose of this validation is 1997 to detect problems with the BIOS-implemented predefined ACPI objects before 1998 the results are returned to the ACPI-related drivers. Future enhancements may 1999 include actual repair of incorrect return objects where possible. Two new 2000 files are nspredef.c and acpredef.h. 2001 2002 Fixed a fault in the AML parser if a memory allocation fails during the Op 2003 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 2004 2005 Fixed an issue with implicit return compatibility. This change improves the 2006 implicit return mechanism to be more compatible with the MS interpreter. Lin 2007 Ming, ACPICA BZ 349. 2008 2009 Implemented support for zero-length buffer-to-string conversions. Allow zero 2010 length strings during interpreter buffer-to-string conversions. For example, 2011 during the ToDecimalString and ToHexString operators, as well as implicit 2012 conversions. Fiodor Suietov, ACPICA BZ 585. 2013 2014 Fixed two possible memory leaks in the error exit paths of 2015 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are 2016 similar in that they use a stack of state objects in order to eliminate 2017 recursion. The stack must be fully unwound and deallocated if an error 2018 occurs. Lin Ming. ACPICA BZ 383. 2019 2020 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global 2021 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 2022 Moore ACPICA BZ 442. 2023 2024 Removed the obsolete version number in module headers. Removed the 2025 "$Revision" number that appeared in each module header. This version number 2026 was useful under SourceSafe and CVS, but has no meaning under git. It is not 2027 only incorrect, it could also be misleading. 2028 2029 Example Code and Data Size: These are the sizes for the OS-independent 2030 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2031 debug version of the code includes the debug output trace mechanism and has a 2032 much larger code and data size. 2033 2034 Previous Release: 2035 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2036 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 2037 Current Release: 2038 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 2039 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 2040 2041 ---------------------------------------- 2042 29 August 2008. Summary of changes for version 20080829: 2043 2044 1) ACPI CA Core Subsystem: 2045 2046 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 2047 Reference. Changes include the elimination of cheating on the Object field 2048 for the DdbHandle subtype, addition of a reference class field to 2049 differentiate the various reference types (instead of an AML opcode), and the 2050 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 2051 2052 Reduce an error to a warning for an incorrect method argument count. 2053 Previously aborted with an error if too few arguments were passed to a 2054 control method via the external ACPICA interface. Now issue a warning instead 2055 and continue. Handles the case where the method inadvertently declares too 2056 many arguments, but does not actually use the extra ones. Applies mainly to 2057 the predefined methods. Lin Ming. Linux BZ 11032. 2058 2059 Disallow the evaluation of named object types with no intrinsic value. Return 2060 AE_TYPE for objects that have no value and therefore evaluation is undefined: 2061 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of 2062 these types were allowed, but an exception would be generated at some point 2063 during the evaluation. Now, the error is generated up front. 2064 2065 Fixed a possible memory leak in the AcpiNsGetExternalPathname function 2066 (nsnames.c). Fixes a leak in the error exit path. 2067 2068 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug 2069 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION 2070 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 2071 ACPI_LV_EVENTS. 2072 2073 Removed obsolete and/or unused exception codes from the acexcep.h header. 2074 There is the possibility that certain device drivers may be affected if they 2075 use any of these exceptions. 2076 2077 The ACPICA documentation has been added to the public git source tree, under 2078 acpica/documents. Included are the ACPICA programmer reference, the iASL 2079 compiler reference, and the changes.txt release logfile. 2080 2081 Example Code and Data Size: These are the sizes for the OS-independent 2082 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2083 debug version of the code includes the debug output trace mechanism and has a 2084 much larger code and data size. 2085 2086 Previous Release: 2087 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2088 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 2089 Current Release: 2090 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2091 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 2092 2093 2) iASL Compiler/Disassembler and Tools: 2094 2095 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 2096 defines _SCP with 3 arguments. Previous versions defined it with only 1 2097 argument. iASL now allows both definitions. 2098 2099 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero- 2100 length subtables when disassembling ACPI tables. Also fixed a couple of 2101 errors where a full 16-bit table type field was not extracted from the input 2102 properly. 2103 2104 acpisrc: Improve comment counting mechanism for generating source code 2105 statistics. Count first and last lines of multi-line comments as whitespace, 2106 not comment lines. Handle Linux legal header in addition to standard acpica 2107 header. 2108 2109 ---------------------------------------- 2110 2111 29 July 2008. Summary of changes for version 20080729: 2112 2113 1) ACPI CA Core Subsystem: 2114 2115 Fix a possible deadlock in the GPE dispatch. Remove call to 2116 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt 2117 to acquire the GPE lock but can deadlock since the GPE lock is already held 2118 at dispatch time. This code was introduced in version 20060831 as a response 2119 to Linux BZ 6881 and has since been removed from Linux. 2120 2121 Add a function to dereference returned reference objects. Examines the return 2122 object from a call to AcpiEvaluateObject. Any Index or RefOf references are 2123 automatically dereferenced in an attempt to return something useful (these 2124 reference types cannot be converted into an external ACPI_OBJECT.) Provides 2125 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 2126 2127 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 2128 subtables for the MADT and one new subtable for the SRAT. Includes 2129 disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC 2130 Specification, June 2008. 2131 2132 Additional error checking for pathname utilities. Add error check after all 2133 calls to AcpiNsGetPathnameLength. Add status return from 2134 AcpiNsBuildExternalPath and check after all calls. Add parameter validation 2135 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 2136 2137 Return status from the global init function AcpiUtGlobalInitialize. This is 2138 used by both the kernel subsystem and the utilities such as iASL compiler. 2139 The function could possibly fail when the caches are initialized. Yang Yi. 2140 2141 Add a function to decode reference object types to strings. Created for 2142 improved error messages. 2143 2144 Improve object conversion error messages. Better error messages during object 2145 conversion from internal to the external ACPI_OBJECT. Used for external calls 2146 to AcpiEvaluateObject. 2147 2148 Example Code and Data Size: These are the sizes for the OS-independent 2149 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2150 debug version of the code includes the debug output trace mechanism and has a 2151 much larger code and data size. 2152 2153 Previous Release: 2154 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 2155 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 2156 Current Release: 2157 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2158 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 2159 2160 2) iASL Compiler/Disassembler and Tools: 2161 2162 Debugger: fix a possible hang when evaluating non-methods. Fixes a problem 2163 introduced in version 20080701. If the object being evaluated (via execute 2164 command) is not a method, the debugger can hang while trying to obtain non- 2165 existent parameters. 2166 2167 iASL: relax error for using reserved "_T_x" identifiers. These names can 2168 appear in a disassembled ASL file if they were emitted by the original 2169 compiler. Instead of issuing an error or warning and forcing the user to 2170 manually change these names, issue a remark instead. 2171 2172 iASL: error if named object created in while loop. Emit an error if any named 2173 object is created within a While loop. If allowed, this code will generate a 2174 run-time error on the second iteration of the loop when an attempt is made to 2175 create the same named object twice. ACPICA bugzilla 730. 2176 2177 iASL: Support absolute pathnames for include files. Add support for absolute 2178 pathnames within the Include operator. previously, only relative pathnames 2179 were supported. 2180 2181 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor. 2182 The ACPI spec requires one interrupt minimum. BZ 423 2183 2184 iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 2185 Handles the case for the Interrupt Resource Descriptor where 2186 the ResourceSource argument is omitted but ResourceSourceIndex 2187 is present. Now leave room for the Index. BZ 426 2188 2189 iASL: Prevent error message if CondRefOf target does not exist. Fixes cases 2190 where an error message is emitted if the target does not exist. BZ 516 2191 2192 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 2193 (get ACPI tables on Windows). This was apparently broken in version 20070919. 2194 2195 AcpiXtract: Handle EOF while extracting data. Correctly handle the case where 2196 the EOF happens immediately after the last table in the input file. Print 2197 completion message. Previously, no message was displayed in this case. 2198 2199 ---------------------------------------- 2200 01 July 2008. Summary of changes for version 20080701: 2201 2202 0) Git source tree / acpica.org 2203 2204 Fixed a problem where a git-clone from http would not transfer the entire 2205 source tree. 2206 2207 1) ACPI CA Core Subsystem: 2208 2209 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 2210 enable bit. Now performs a read-change-write of the enable register instead 2211 of simply writing out the cached enable mask. This will prevent inadvertent 2212 enabling of GPEs if a rogue GPE is received during initialization (before GPE 2213 handlers are installed.) 2214 2215 Implemented a copy for dynamically loaded tables. Previously, dynamically 2216 loaded tables were simply mapped - but on some machines this memory is 2217 corrupted after suspend. Now copy the table to a local buffer. For the 2218 OpRegion case, added checksum verify. Use the table length from the table 2219 header, not the region length. For the Buffer case, use the table length 2220 also. Dennis Noordsij, Bob Moore. BZ 10734 2221 2222 Fixed a problem where the same ACPI table could not be dynamically loaded and 2223 unloaded more than once. Without this change, a table cannot be loaded again 2224 once it has been loaded/unloaded one time. The current mechanism does not 2225 unregister a table upon an unload. During a load, if the same table is found, 2226 this no longer returns an exception. BZ 722 2227 2228 Fixed a problem where the wrong descriptor length was calculated for the 2229 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag 2230 are calculated as 12 bytes long, but the actual length in the internal 2231 descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported 2232 by Linn Crosetto. BZ 728 2233 2234 Fixed a possible memory leak in the Unload operator. The DdbHandle returned 2235 by Load() did not have its reference count decremented during unload, leading 2236 to a memory leak. Lin Ming. BZ 727 2237 2238 Fixed a possible memory leak when deleting thermal/processor objects. Any 2239 associated notify handlers (and objects) were not being deleted. Fiodor 2240 Suietov. BZ 506 2241 2242 Fixed the ordering of the ASCII names in the global mutex table to match the 2243 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only. 2244 Vegard Nossum. BZ 726 2245 2246 Enhanced the AcpiGetObjectInfo interface to return the number of required 2247 arguments if the object is a control method. Added this call to the debugger 2248 so the proper number of default arguments are passed to a method. This 2249 prevents a warning when executing methods from AcpiExec. 2250 2251 Added a check for an invalid handle in AcpiGetObjectInfo. Return 2252 AE_BAD_PARAMETER if input handle is invalid. BZ 474 2253 2254 Fixed an extraneous warning from exconfig.c on the 64-bit build. 2255 2256 Example Code and Data Size: These are the sizes for the OS-independent 2257 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2258 debug version of the code includes the debug output trace mechanism and has a 2259 much larger code and data size. 2260 2261 Previous Release: 2262 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 2263 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 2264 Current Release: 2265 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 2266 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 2267 2268 2) iASL Compiler/Disassembler and Tools: 2269 2270 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 2271 resource descriptor names. 2272 2273 iASL: Detect invalid ASCII characters in input (windows version). Removed the 2274 "-CF" flag from the flex compile, enables correct detection of non-ASCII 2275 characters in the input. BZ 441 2276 2277 iASL: Eliminate warning when result of LoadTable is not used. Eliminate the 2278 "result of operation not used" warning when the DDB handle returned from 2279 LoadTable is not used. The warning is not needed. BZ 590 2280 2281 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to 2282 pass address of table to the AML. Added option to disable OpRegion simulation 2283 to allow creation of an OpRegion with a real address that was passed to _CFG. 2284 All of this allows testing of the Load and Unload operators from AcpiExec. 2285 2286 Debugger: update tables command for unloaded tables. Handle unloaded tables 2287 and use the standard table header output routine. 2288 2289 ---------------------------------------- 2290 09 June 2008. Summary of changes for version 20080609: 2291 2292 1) ACPI CA Core Subsystem: 2293 2294 Implemented a workaround for reversed _PRT entries. A significant number of 2295 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 2296 change dynamically detects and repairs this problem. Provides compatibility 2297 with MS ACPI. BZ 6859 2298 2299 Simplified the internal ACPI hardware interfaces to eliminate the locking 2300 flag parameter from Register Read/Write. Added a new external interface, 2301 AcpiGetRegisterUnlocked. 2302 2303 Fixed a problem where the invocation of a GPE control method could hang. This 2304 was a regression introduced in 20080514. The new method argument count 2305 validation mechanism can enter an infinite loop when a GPE method is 2306 dispatched. Problem fixed by removing the obsolete code that passed GPE block 2307 information to the notify handler via the control method parameter pointer. 2308 2309 Fixed a problem where the _SST execution status was incorrectly returned to 2310 the caller of AcpiEnterSleepStatePrep. This was a regression introduced in 2311 20080514. _SST is optional and a NOT_FOUND exception should never be 2312 returned. BZ 716 2313 2314 Fixed a problem where a deleted object could be accessed from within the AML 2315 parser. This was a regression introduced in version 20080123 as a fix for the 2316 Unload operator. Lin Ming. BZ 10669 2317 2318 Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands 2319 and eliminated the use of a negative index in a loop. Operands are now 2320 displayed in the correct order, not backwards. This also fixes a regression 2321 introduced in 20080514 on 64-bit systems where the elimination of 2322 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715 2323 2324 Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit 2325 path did not delete a locally allocated structure. 2326 2327 Updated definitions for the DMAR and SRAT tables to synchronize with the 2328 current specifications. Includes disassembler support. 2329 2330 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 2331 loop termination value was used. Loop terminated on iteration early, missing 2332 one mutex. Linn Crosetto 2333 2334 Example Code and Data Size: These are the sizes for the OS-independent 2335 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2336 debug version of the code includes the debug output trace mechanism and has a 2337 much larger code and data size. 2338 2339 Previous Release: 2340 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 2341 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 2342 Current Release: 2343 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 2344 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 2345 2346 2) iASL Compiler/Disassembler and Tools: 2347 2348 Disassembler: Implemented support for EisaId() within _CID objects. Now 2349 disassemble integer _CID objects back to EisaId invocations, including 2350 multiple integers within _CID packages. Includes single-step support for 2351 debugger also. 2352 2353 Disassembler: Added support for DMAR and SRAT table definition changes. 2354 2355 ---------------------------------------- 2356 14 May 2008. Summary of changes for version 20080514: 2357 2358 1) ACPI CA Core Subsystem: 2359 2360 Fixed a problem where GPEs were enabled too early during the ACPICA 2361 initialization. This could lead to "handler not installed" errors on some 2362 machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This 2363 ensures that all operation regions and devices throughout the namespace have 2364 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 2365 2366 Implemented a change to the enter sleep code. Moved execution of the _GTS 2367 method to just before setting sleep enable bit. The execution was moved from 2368 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 2369 immediately before the SLP_EN bit is set, as per the ACPI specification. 2370 Luming Yu, BZ 1653. 2371 2372 Implemented a fix to disable unknown GPEs (2nd version). Now always disable 2373 the GPE, even if ACPICA thinks that that it is already disabled. It is 2374 possible that the AML or some other code has enabled the GPE unbeknownst to 2375 the ACPICA code. 2376 2377 Fixed a problem with the Field operator where zero-length fields would return 2378 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL 2379 field declarations in Field(), BankField(), and IndexField(). BZ 10606. 2380 2381 Implemented a fix for the Load operator, now load the table at the namespace 2382 root. This reverts a change introduced in version 20071019. The table is now 2383 loaded at the namespace root even though this goes against the ACPI 2384 specification. This provides compatibility with other ACPI implementations. 2385 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming. 2386 2387 Fixed a problem where ACPICA would not Load() tables with unusual signatures. 2388 Now ignore ACPI table signature for Load() operator. Only "SSDT" is 2389 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 2390 Therefore, signature validation is worthless. Apparently MS ACPI accepts such 2391 signatures, ACPICA must be compatible. BZ 10454. 2392 2393 Fixed a possible negative array index in AcpiUtValidateException. Added NULL 2394 fields to the exception string arrays to eliminate a -1 subtraction on the 2395 SubStatus field. 2396 2397 Updated the debug tracking macros to reduce overall code and data size. 2398 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 2399 instead of pointers to static strings. Jan Beulich and Bob Moore. 2400 2401 Implemented argument count checking in control method invocation via 2402 AcpiEvaluateObject. Now emit an error if too few arguments, warning if too 2403 many. This applies only to extern programmatic control method execution, not 2404 method-to-method calls within the AML. Lin Ming. 2405 2406 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no 2407 longer needed, especially with the removal of 16-bit support. It was replaced 2408 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on 2409 32/64-bit platforms is required. 2410 2411 Added the C const qualifier for appropriate string constants -- mostly 2412 MODULE_NAME and printf format strings. Jan Beulich. 2413 2414 Example Code and Data Size: These are the sizes for the OS-independent 2415 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2416 debug version of the code includes the debug output trace mechanism and has a 2417 much larger code and data size. 2418 2419 Previous Release: 2420 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 2421 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 2422 Current Release: 2423 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 2424 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 2425 2426 2) iASL Compiler/Disassembler and Tools: 2427 2428 Implemented ACPI table revision ID validation in the disassembler. Zero is 2429 always invalid. For DSDTs, the ID controls the interpreter integer width. 1 2430 means 32-bit and this is unusual. 2 or greater is 64-bit. 2431 2432 ---------------------------------------- 2433 21 March 2008. Summary of changes for version 20080321: 2434 2435 1) ACPI CA Core Subsystem: 2436 2437 Implemented an additional change to the GPE support in order to suppress 2438 spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently 2439 disable incoming GPEs that are neither enabled nor disabled -- meaning that 2440 the GPE is unknown to the system. This should prevent future interrupt floods 2441 from that GPE. BZ 6217 (Zhang Rui) 2442 2443 Fixed a problem where NULL package elements were not returned to the 2444 AcpiEvaluateObject interface correctly. The element was simply ignored 2445 instead of returning a NULL ACPI_OBJECT package element, potentially causing 2446 a buffer overflow and/or confusing the caller who expected a fixed number of 2447 elements. BZ 10132 (Lin Ming, Bob Moore) 2448 2449 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword, 2450 Qword), Field, BankField, and IndexField operators when invoked from inside 2451 an executing control method. In this case, these operators created namespace 2452 nodes that were incorrectly left marked as permanent nodes instead of 2453 temporary nodes. This could cause a problem if there is race condition 2454 between an exiting control method and a running namespace walk. (Reported by 2455 Linn Crosetto) 2456 2457 Fixed a problem where the CreateField and CreateXXXField operators would 2458 incorrectly allow duplicate names (the name of the field) with no exception 2459 generated. 2460 2461 Implemented several changes for Notify handling. Added support for new Notify 2462 values (ACPI 2.0+) and improved the Notify debug output. Notify on 2463 PowerResource objects is no longer allowed, as per the ACPI specification. 2464 (Bob Moore, Zhang Rui) 2465 2466 All Reference Objects returned via the AcpiEvaluateObject interface are now 2467 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for 2468 NULL objects - either NULL package elements or unresolved named references. 2469 2470 Fixed a problem where an extraneous debug message was produced for package 2471 objects (when debugging enabled). The message "Package List length larger 2472 than NumElements count" is now produced in the correct case, and is now an 2473 error message rather than a debug message. Added a debug message for the 2474 opposite case, where NumElements is larger than the Package List (the package 2475 will be padded out with NULL elements as per the ACPI spec.) 2476 2477 Implemented several improvements for the output of the ASL "Debug" object to 2478 clarify and keep all data for a given object on one output line. 2479 2480 Fixed two size calculation issues with the variable-length Start Dependent 2481 resource descriptor. 2482 2483 Example Code and Data Size: These are the sizes for the OS-independent 2484 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2485 debug version of the code includes the debug output trace mechanism and has 2486 a much larger code and data size. 2487 2488 Previous Release: 2489 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 2490 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 2491 Current Release: 2492 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 2493 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 2494 2495 2) iASL Compiler/Disassembler and Tools: 2496 2497 Fixed a problem with the use of the Switch operator where execution of the 2498 containing method by multiple concurrent threads could cause an 2499 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 2500 actual Switch opcode, it must be simulated with local named temporary 2501 variables and if/else pairs. The solution chosen was to mark any method that 2502 uses Switch as Serialized, thus preventing multiple thread entries. BZ 469. 2503 2504 ---------------------------------------- 2505 13 February 2008. Summary of changes for version 20080213: 2506 2507 1) ACPI CA Core Subsystem: 2508 2509 Implemented another MS compatibility design change for GPE/Notify handling. 2510 GPEs are now cleared/enabled asynchronously to allow all pending notifies to 2511 complete first. It is expected that the OSL will queue the enable request 2512 behind all pending notify requests (may require changes to the local host OSL 2513 in AcpiOsExecute). Alexey Starikovskiy. 2514 2515 Fixed a problem where buffer and package objects passed as arguments to a 2516 control method via the external AcpiEvaluateObject interface could cause an 2517 AE_AML_INTERNAL exception depending on the order and type of operators 2518 executed by the target control method. 2519 2520 Fixed a problem where resource descriptor size optimization could cause a 2521 problem when a _CRS resource template is passed to a _SRS method. The _SRS 2522 resource template must use the same descriptors (with the same size) as 2523 returned from _CRS. This change affects the following resource descriptors: 2524 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487) 2525 2526 Fixed a problem where a CopyObject to RegionField, BankField, and IndexField 2527 objects did not perform an implicit conversion as it should. These types must 2528 retain their initial type permanently as per the ACPI specification. However, 2529 a CopyObject to all other object types should not perform an implicit 2530 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 2531 2532 Fixed a problem with the AcpiGetDevices interface where the mechanism to 2533 match device CIDs did not examine the entire list of available CIDs, but 2534 instead aborted on the first non-matching CID. Andrew Patterson. 2535 2536 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was 2537 inadvertently changed to return a 16-bit value instead of a 32-bit value, 2538 truncating the upper dword of a 64-bit value. This macro is only used to 2539 display debug output, so no incorrect calculations were made. Also, 2540 reimplemented the macro so that a 64-bit shift is not performed by 2541 inefficient compilers. 2542 2543 Added missing va_end statements that should correspond with each va_start 2544 statement. 2545 2546 Example Code and Data Size: These are the sizes for the OS-independent 2547 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2548 debug version of the code includes the debug output trace mechanism and has 2549 a much larger code and data size. 2550 2551 Previous Release: 2552 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 2553 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 2554 Current Release: 2555 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 2556 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 2557 2558 2) iASL Compiler/Disassembler and Tools: 2559 2560 Implemented full disassembler support for the following new ACPI tables: 2561 BERT, EINJ, and ERST. Implemented partial disassembler support for the 2562 complicated HEST table. These tables support the Windows Hardware Error 2563 Architecture (WHEA). 2564 2565 ---------------------------------------- 2566 23 January 2008. Summary of changes for version 20080123: 2567 2568 1) ACPI CA Core Subsystem: 2569 2570 Added the 2008 copyright to all module headers and signons. This affects 2571 virtually every file in the ACPICA core subsystem, the iASL compiler, and 2572 the tools/utilities. 2573 2574 Fixed a problem with the SizeOf operator when used with Package and Buffer 2575 objects. These objects have deferred execution for some arguments, and the 2576 execution is now completed before the SizeOf is executed. This problem caused 2577 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ 2578 9558 2579 2580 Implemented an enhancement to the interpreter "slack mode". In the absence of 2581 an explicit return or an implicitly returned object from the last executed 2582 opcode, a control method will now implicitly return an integer of value 0 for 2583 Microsoft compatibility. (Lin Ming) BZ 392 2584 2585 Fixed a problem with the Load operator where an exception was not returned in 2586 the case where the table is already loaded. (Lin Ming) BZ 463 2587 2588 Implemented support for the use of DDBHandles as an Indexed Reference, as per 2589 the ACPI spec. (Lin Ming) BZ 486 2590 2591 Implemented support for UserTerm (Method invocation) for the Unload operator 2592 as per the ACPI spec. (Lin Ming) BZ 580 2593 2594 Fixed a problem with the LoadTable operator where the OemId and OemTableId 2595 input strings could cause unexpected failures if they were shorter than the 2596 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 2597 2598 Implemented support for UserTerm (Method invocation) for the Unload operator 2599 as per the ACPI spec. (Lin Ming) BZ 580 2600 2601 Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST, 2602 IBFT, UEFI, WDAT. Disassembler support is forthcoming. 2603 2604 Example Code and Data Size: These are the sizes for the OS-independent 2605 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2606 debug version of the code includes the debug output trace mechanism and has 2607 a much larger code and data size. 2608 2609 Previous Release: 2610 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 2611 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 2612 Current Release: 2613 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 2614 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 2615 2616 2) iASL Compiler/Disassembler and Tools: 2617 2618 Implemented support in the disassembler for checksum validation on incoming 2619 binary DSDTs and SSDTs. If incorrect, a message is displayed within the table 2620 header dump at the start of the disassembly. 2621 2622 Implemented additional debugging information in the namespace listing file 2623 created during compilation. In addition to the namespace hierarchy, the full 2624 pathname to each namespace object is displayed. 2625 2626 Fixed a problem with the disassembler where invalid ACPI tables could cause 2627 faults or infinite loops. 2628 2629 Fixed an unexpected parse error when using the optional "parameter types" 2630 list in a control method declaration. (Lin Ming) BZ 397 2631 2632 Fixed a problem where two External declarations with the same name did not 2633 cause an error (Lin Ming) BZ 509 2634 2635 Implemented support for full TermArgs (adding Argx, Localx and method 2636 invocation) for the ParameterData parameter to the LoadTable operator. (Lin 2637 Ming) BZ 583,587 2638 2639 ---------------------------------------- 2640 19 December 2007. Summary of changes for version 20071219: 2641 2642 1) ACPI CA Core Subsystem: 2643 2644 Implemented full support for deferred execution for the TermArg string 2645 arguments for DataTableRegion. This enables forward references and full 2646 operand resolution for the three string arguments. Similar to OperationRegion 2647 deferred argument execution.) Lin Ming. BZ 430 2648 2649 Implemented full argument resolution support for the BankValue argument to 2650 BankField. Previously, only constants were supported, now any TermArg may be 2651 used. Lin Ming BZ 387, 393 2652 2653 Fixed a problem with AcpiGetDevices where the search of a branch of the 2654 device tree could be terminated prematurely. In accordance with the ACPI 2655 specification, the search down the current branch is terminated if a device 2656 is both not present and not functional (instead of just not present.) Yakui 2657 Zhao. 2658 2659 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if 2660 the underlying AML code changed the GPE enable registers. Now, any unknown 2661 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled 2662 instead of simply ignored. Rui Zhang. 2663 2664 Fixed a problem with Index Fields where the Index register was incorrectly 2665 limited to a maximum of 32 bits. Now any size may be used. 2666 2667 Fixed a couple memory leaks associated with "implicit return" objects when 2668 the AML Interpreter slack mode is enabled. Lin Ming BZ 349 2669 2670 Example Code and Data Size: These are the sizes for the OS-independent 2671 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2672 debug version of the code includes the debug output trace mechanism and has 2673 a much larger code and data size. 2674 2675 Previous Release: 2676 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 2677 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 2678 Current Release: 2679 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 2680 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 2681 2682 ---------------------------------------- 2683 14 November 2007. Summary of changes for version 20071114: 2684 2685 1) ACPI CA Core Subsystem: 2686 2687 Implemented event counters for each of the Fixed Events, the ACPI SCI 2688 (interrupt) itself, and control methods executed. Named 2689 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These 2690 should be useful for debugging and statistics. 2691 2692 Implemented a new external interface, AcpiGetStatistics, to retrieve the 2693 contents of the various event counters. Returns the current values for 2694 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 2695 AcpiMethodCount. The interface can be expanded in the future if new counters 2696 are added. Device drivers should use this interface rather than access the 2697 counters directly. 2698 2699 Fixed a problem with the FromBCD and ToBCD operators. With some compilers, 2700 the ShortDivide function worked incorrectly, causing problems with the BCD 2701 functions with large input values. A truncation from 64-bit to 32-bit 2702 inadvertently occurred. Internal BZ 435. Lin Ming 2703 2704 Fixed a problem with Index references passed as method arguments. References 2705 passed as arguments to control methods were dereferenced immediately (before 2706 control was passed to the called method). The references are now correctly 2707 passed directly to the called method. BZ 5389. Lin Ming 2708 2709 Fixed a problem with CopyObject used in conjunction with the Index operator. 2710 The reference was incorrectly dereferenced before the copy. The reference is 2711 now correctly copied. BZ 5391. Lin Ming 2712 2713 Fixed a problem with Control Method references within Package objects. These 2714 references are now correctly generated. This completes the package 2715 construction overhaul that began in version 20071019. 2716 2717 Example Code and Data Size: These are the sizes for the OS-independent 2718 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2719 debug version of the code includes the debug output trace mechanism and has 2720 a much larger code and data size. 2721 2722 Previous Release: 2723 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 2724 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 2725 Current Release: 2726 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 2727 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 2728 2729 2730 2) iASL Compiler/Disassembler and Tools: 2731 2732 The AcpiExec utility now installs handlers for all of the predefined 2733 Operation Region types. New types supported are: PCI_Config, CMOS, and 2734 PCIBARTarget. 2735 2736 Fixed a problem with the 64-bit version of AcpiExec where the extended (64- 2737 bit) address fields for the DSDT and FACS within the FADT were not being 2738 used, causing truncation of the upper 32-bits of these addresses. Lin Ming 2739 and Bob Moore 2740 2741 ---------------------------------------- 2742 19 October 2007. Summary of changes for version 20071019: 2743 2744 1) ACPI CA Core Subsystem: 2745 2746 Fixed a problem with the Alias operator when the target of the alias is a 2747 named ASL operator that opens a new scope -- Scope, Device, PowerResource, 2748 Processor, and ThermalZone. In these cases, any children of the original 2749 operator could not be accessed via the alias, potentially causing unexpected 2750 AE_NOT_FOUND exceptions. (BZ 9067) 2751 2752 Fixed a problem with the Package operator where all named references were 2753 created as object references and left otherwise unresolved. According to the 2754 ACPI specification, a Package can only contain Data Objects or references to 2755 control methods. The implication is that named references to Data Objects 2756 (Integer, Buffer, String, Package, BufferField, Field) should be resolved 2757 immediately upon package creation. This is the approach taken with this 2758 change. References to all other named objects (Methods, Devices, Scopes, 2759 etc.) are all now properly created as reference objects. (BZ 5328) 2760 2761 Reverted a change to Notify handling that was introduced in version 2762 20070508. This version changed the Notify handling from asynchronous to 2763 fully synchronous (Device driver Notify handling with respect to the Notify 2764 ASL operator). It was found that this change caused more problems than it 2765 solved and was removed by most users. 2766 2767 Fixed a problem with the Increment and Decrement operators where the type of 2768 the target object could be unexpectedly and incorrectly changed. (BZ 353) 2769 Lin Ming. 2770 2771 Fixed a problem with the Load and LoadTable operators where the table 2772 location within the namespace was ignored. Instead, the table was always 2773 loaded into the root or current scope. Lin Ming. 2774 2775 Fixed a problem with the Load operator when loading a table from a buffer 2776 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 2777 2778 Fixed a problem with the Debug object where a store of a DdbHandle reference 2779 object to the Debug object could cause a fault. 2780 2781 Added a table checksum verification for the Load operator, in the case where 2782 the load is from a buffer. (BZ 578). 2783 2784 Implemented additional parameter validation for the LoadTable operator. The 2785 length of the input strings SignatureString, OemIdString, and OemTableId are 2786 now checked for maximum lengths. (BZ 582) Lin Ming. 2787 2788 Example Code and Data Size: These are the sizes for the OS-independent 2789 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2790 debug version of the code includes the debug output trace mechanism and has 2791 a much larger code and data size. 2792 2793 Previous Release: 2794 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 2795 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 2796 Current Release: 2797 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 2798 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 2799 2800 2801 2) iASL Compiler/Disassembler: 2802 2803 Fixed a problem where if a single file was specified and the file did not 2804 exist, no error message was emitted. (Introduced with wildcard support in 2805 version 20070917.) 2806 2807 ---------------------------------------- 2808 19 September 2007. Summary of changes for version 20070919: 2809 2810 1) ACPI CA Core Subsystem: 2811 2812 Designed and implemented new external interfaces to install and remove 2813 handlers for ACPI table-related events. Current events that are defined are 2814 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 2815 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 2816 AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 2817 2818 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 2819 (acpi_serialized option on Linux) could cause some systems to hang during 2820 initialization. (Bob Moore) BZ 8171 2821 2822 Fixed a problem where objects of certain types (Device, ThermalZone, 2823 Processor, PowerResource) can be not found if they are declared and 2824 referenced from within the same control method (Lin Ming) BZ 341 2825 2826 Example Code and Data Size: These are the sizes for the OS-independent 2827 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2828 debug version of the code includes the debug output trace mechanism and has 2829 a much larger code and data size. 2830 2831 Previous Release: 2832 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 2833 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 2834 Current Release: 2835 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 2836 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 2837 2838 2839 2) iASL Compiler/Disassembler: 2840 2841 Implemented support to allow multiple files to be compiled/disassembled in a 2842 single invocation. This includes command line wildcard support for both the 2843 Windows and Unix versions of the compiler. This feature simplifies the 2844 disassembly and compilation of multiple ACPI tables in a single directory. 2845 2846 ---------------------------------------- 2847 08 May 2007. Summary of changes for version 20070508: 2848 2849 1) ACPI CA Core Subsystem: 2850 2851 Implemented a Microsoft compatibility design change for the handling of the 2852 Notify AML operator. Previously, notify handlers were dispatched and 2853 executed completely asynchronously in a deferred thread. The new design 2854 still executes the notify handlers in a different thread, but the original 2855 thread that executed the Notify() now waits at a synchronization point for 2856 the notify handler to complete. Some machines depend on a synchronous Notify 2857 operator in order to operate correctly. 2858 2859 Implemented support to allow Package objects to be passed as method 2860 arguments to the external AcpiEvaluateObject interface. Previously, this 2861 would return the AE_NOT_IMPLEMENTED exception. This feature had not been 2862 implemented since there were no reserved control methods that required it 2863 until recently. 2864 2865 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that 2866 contained invalid non-zero values in reserved fields could cause later 2867 failures because these fields have meaning in later revisions of the FADT. 2868 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields 2869 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 2870 2871 Fixed a problem where the Global Lock handle was not properly updated if a 2872 thread that acquired the Global Lock via executing AML code then attempted 2873 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe 2874 Liu. 2875 2876 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 2877 could be corrupted if the interrupt being removed was at the head of the 2878 list. Reported by Linn Crosetto. 2879 2880 Example Code and Data Size: These are the sizes for the OS-independent 2881 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2882 debug version of the code includes the debug output trace mechanism and has 2883 a much larger code and data size. 2884 2885 Previous Release: 2886 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2887 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 2888 Current Release: 2889 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 2890 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 2891 2892 ---------------------------------------- 2893 20 March 2007. Summary of changes for version 20070320: 2894 2895 1) ACPI CA Core Subsystem: 2896 2897 Implemented a change to the order of interpretation and evaluation of AML 2898 operand objects within the AML interpreter. The interpreter now evaluates 2899 operands in the order that they appear in the AML stream (and the 2900 corresponding ASL code), instead of in the reverse order (after the entire 2901 operand list has been parsed). The previous behavior caused several subtle 2902 incompatibilities with the Microsoft AML interpreter as well as being 2903 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 2904 2905 Implemented a change to the ACPI Global Lock support. All interfaces to the 2906 global lock now allow the same thread to acquire the lock multiple times. 2907 This affects the AcpiAcquireGlobalLock external interface to the global lock 2908 as well as the internal use of the global lock to support AML fields -- a 2909 control method that is holding the global lock can now simultaneously access 2910 AML fields that require global lock protection. Previously, in both cases, 2911 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to 2912 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 2913 Controller. There is no change to the behavior of the AML Acquire operator, 2914 as this can already be used to acquire a mutex multiple times by the same 2915 thread. BZ 8066. With assistance from Alexey Starikovskiy. 2916 2917 Fixed a problem where invalid objects could be referenced in the AML 2918 Interpreter after error conditions. During operand evaluation, ensure that 2919 the internal "Return Object" field is cleared on error and only valid 2920 pointers are stored there. Caused occasional access to deleted objects that 2921 resulted in "large reference count" warning messages. Valery Podrezov. 2922 2923 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on 2924 deeply nested control method invocations. BZ 7873, local BZ 487. Valery 2925 Podrezov. 2926 2927 Fixed an internal problem with the handling of result objects on the 2928 interpreter result stack. BZ 7872. Valery Podrezov. 2929 2930 Removed obsolete code that handled the case where AML_NAME_OP is the target 2931 of a reference (Reference.Opcode). This code was no longer necessary. BZ 2932 7874. Valery Podrezov. 2933 2934 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a 2935 remnant from the previously discontinued 16-bit support. 2936 2937 Example Code and Data Size: These are the sizes for the OS-independent 2938 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2939 debug version of the code includes the debug output trace mechanism and has 2940 a much larger code and data size. 2941 2942 Previous Release: 2943 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2944 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2945 Current Release: 2946 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2947 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 2948 2949 ---------------------------------------- 2950 26 January 2007. Summary of changes for version 20070126: 2951 2952 1) ACPI CA Core Subsystem: 2953 2954 Added the 2007 copyright to all module headers and signons. This affects 2955 virtually every file in the ACPICA core subsystem, the iASL compiler, and 2956 the utilities. 2957 2958 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 2959 during a table load. A bad pointer was passed in the case where the DSDT is 2960 overridden, causing a fault in this case. 2961 2962 Example Code and Data Size: These are the sizes for the OS-independent 2963 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2964 debug version of the code includes the debug output trace mechanism and has 2965 a much larger code and data size. 2966 2967 Previous Release: 2968 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2969 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2970 Current Release: 2971 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2972 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2973 2974 ---------------------------------------- 2975 15 December 2006. Summary of changes for version 20061215: 2976 2977 1) ACPI CA Core Subsystem: 2978 2979 Support for 16-bit ACPICA has been completely removed since it is no longer 2980 necessary and it clutters the code. All 16-bit macros, types, and 2981 conditional compiles have been removed, cleaning up and simplifying the code 2982 across the entire subsystem. DOS support is no longer needed since the 2983 bootable Linux firmware kit is now available. 2984 2985 The handler for the Global Lock is now removed during AcpiTerminate to 2986 enable a clean subsystem restart, via the implementation of the 2987 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 2988 HP) 2989 2990 Implemented enhancements to the multithreading support within the debugger 2991 to enable improved multithreading debugging and evaluation of the subsystem. 2992 (Valery Podrezov) 2993 2994 Debugger: Enhanced the Statistics/Memory command to emit the total (maximum) 2995 memory used during the execution, as well as the maximum memory consumed by 2996 each of the various object types. (Valery Podrezov) 2997 2998 Example Code and Data Size: These are the sizes for the OS-independent 2999 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3000 debug version of the code includes the debug output trace mechanism and has 3001 a much larger code and data size. 3002 3003 Previous Release: 3004 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 3005 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 3006 Current Release: 3007 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3008 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 3009 3010 3011 2) iASL Compiler/Disassembler and Tools: 3012 3013 AcpiExec: Implemented a new option (-m) to display full memory use 3014 statistics upon subsystem/program termination. (Valery Podrezov) 3015 3016 ---------------------------------------- 3017 09 November 2006. Summary of changes for version 20061109: 3018 3019 1) ACPI CA Core Subsystem: 3020 3021 Optimized the Load ASL operator in the case where the source operand is an 3022 operation region. Simply map the operation region memory, instead of 3023 performing a bytewise read. (Region must be of type SystemMemory, see 3024 below.) 3025 3026 Fixed the Load ASL operator for the case where the source operand is a 3027 region field. A buffer object is also allowed as the source operand. BZ 480 3028 3029 Fixed a problem where the Load ASL operator allowed the source operand to be 3030 an operation region of any type. It is now restricted to regions of type 3031 SystemMemory, as per the ACPI specification. BZ 481 3032 3033 Additional cleanup and optimizations for the new Table Manager code. 3034 3035 AcpiEnable will now fail if all of the required ACPI tables are not loaded 3036 (FADT, FACS, DSDT). BZ 477 3037 3038 Added #pragma pack(8/4) to acobject.h to ensure that the structures in this 3039 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 3040 manually optimized to be aligned and will not work if it is byte-packed. 3041 3042 Example Code and Data Size: These are the sizes for the OS-independent 3043 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3044 debug version of the code includes the debug output trace mechanism and has 3045 a much larger code and data size. 3046 3047 Previous Release: 3048 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 3049 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 3050 Current Release: 3051 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 3052 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 3053 3054 3055 2) iASL Compiler/Disassembler and Tools: 3056 3057 Fixed a problem where the presence of the _OSI predefined control method 3058 within complex expressions could cause an internal compiler error. 3059 3060 AcpiExec: Implemented full region support for multiple address spaces. 3061 SpaceId is now part of the REGION object. BZ 429 3062 3063 ---------------------------------------- 3064 11 October 2006. Summary of changes for version 20061011: 3065 3066 1) ACPI CA Core Subsystem: 3067 3068 Completed an AML interpreter performance enhancement for control method 3069 execution. Previously a 2-pass parse/execution, control methods are now 3070 completely parsed and executed in a single pass. This improves overall 3071 interpreter performance by ~25%, reduces code size, and reduces CPU stack 3072 use. (Valery Podrezov + interpreter changes in version 20051202 that 3073 eliminated namespace loading during the pass one parse.) 3074 3075 Implemented _CID support for PCI Root Bridge detection. If the _HID does not 3076 match the predefined PCI Root Bridge IDs, the _CID list (if present) is now 3077 obtained and also checked for an ID match. 3078 3079 Implemented additional support for the PCI _ADR execution: upsearch until a 3080 device scope is found before executing _ADR. This allows PCI_Config 3081 operation regions to be declared locally within control methods underneath 3082 PCI device objects. 3083 3084 Fixed a problem with a possible race condition between threads executing 3085 AcpiWalkNamespace and the AML interpreter. This condition was removed by 3086 modifying AcpiWalkNamespace to (by default) ignore all temporary namespace 3087 entries created during any concurrent control method execution. An 3088 additional namespace race condition is known to exist between 3089 AcpiWalkNamespace and the Load/Unload ASL operators and is still under 3090 investigation. 3091 3092 Restructured the AML ParseLoop function, breaking it into several 3093 subfunctions in order to reduce CPU stack use and improve maintainability. 3094 (Mikhail Kouzmich) 3095 3096 AcpiGetHandle: Fix for parameter validation to detect invalid combinations 3097 of prefix handle and pathname. BZ 478 3098 3099 Example Code and Data Size: These are the sizes for the OS-independent 3100 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3101 debug version of the code includes the debug output trace mechanism and has 3102 a much larger code and data size. 3103 3104 Previous Release: 3105 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3106 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 3107 Current Release: 3108 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 3109 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 3110 3111 2) iASL Compiler/Disassembler and Tools: 3112 3113 Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager 3114 to restore original behavior. 3115 3116 ---------------------------------------- 3117 27 September 2006. Summary of changes for version 20060927: 3118 3119 1) ACPI CA Core Subsystem: 3120 3121 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 3122 These functions now use a spinlock for mutual exclusion and the interrupt 3123 level indication flag is not needed. 3124 3125 Fixed a problem with the Global Lock where the lock could appear to be 3126 obtained before it is actually obtained. The global lock semaphore was 3127 inadvertently created with one unit instead of zero units. (BZ 464) Fiodor 3128 Suietov. 3129 3130 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during 3131 a read from a buffer or region field. (BZ 458) Fiodor Suietov. 3132 3133 Example Code and Data Size: These are the sizes for the OS-independent 3134 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3135 debug version of the code includes the debug output trace mechanism and has 3136 a much larger code and data size. 3137 3138 Previous Release: 3139 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3140 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 3141 Current Release: 3142 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3143 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 3144 3145 3146 2) iASL Compiler/Disassembler and Tools: 3147 3148 Fixed a compilation problem with the pre-defined Resource Descriptor field 3149 names where an "object does not exist" error could be incorrectly generated 3150 if the parent ResourceTemplate pathname places the template within a 3151 different namespace scope than the current scope. (BZ 7212) 3152 3153 Fixed a problem where the compiler could hang after syntax errors detected 3154 in an ElseIf construct. (BZ 453) 3155 3156 Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 3157 operator. An incorrect output filename was produced when this parameter was 3158 a null string (""). Now, the original input filename is used as the AML 3159 output filename, with an ".aml" extension. 3160 3161 Implemented a generic batch command mode for the AcpiExec utility (execute 3162 any AML debugger command) (Valery Podrezov). 3163 3164 ---------------------------------------- 3165 12 September 2006. Summary of changes for version 20060912: 3166 3167 1) ACPI CA Core Subsystem: 3168 3169 Enhanced the implementation of the "serialized mode" of the interpreter 3170 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 3171 specified, instead of creating a serialization semaphore per control method, 3172 the interpreter lock is simply no longer released before a blocking 3173 operation during control method execution. This effectively makes the AML 3174 Interpreter single-threaded. The overhead of a semaphore per-method is 3175 eliminated. 3176 3177 Fixed a regression where an error was no longer emitted if a control method 3178 attempts to create 2 objects of the same name. This once again returns 3179 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that 3180 will dynamically serialize the control method to possible prevent future 3181 errors. (BZ 440) 3182 3183 Integrated a fix for a problem with PCI Express HID detection in the PCI 3184 Config Space setup procedure. (BZ 7145) 3185 3186 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 3187 AcpiHwInitialize function - the FADT registers are now validated when the 3188 table is loaded. 3189 3190 Added two new warnings during FADT verification - 1) if the FADT is larger 3191 than the largest known FADT version, and 2) if there is a mismatch between a 3192 32-bit block address and the 64-bit X counterpart (when both are non-zero.) 3193 3194 Example Code and Data Size: These are the sizes for the OS-independent 3195 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3196 debug version of the code includes the debug output trace mechanism and has 3197 a much larger code and data size. 3198 3199 Previous Release: 3200 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 3201 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 3202 Current Release: 3203 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3204 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 3205 3206 3207 2) iASL Compiler/Disassembler and Tools: 3208 3209 Fixed a problem with the implementation of the Switch() operator where the 3210 temporary variable was declared too close to the actual Switch, instead of 3211 at method level. This could cause a problem if the Switch() operator is 3212 within a while loop, causing an error on the second iteration. (BZ 460) 3213 3214 Disassembler - fix for error emitted for unknown type for target of scope 3215 operator. Now, ignore it and continue. 3216 3217 Disassembly of an FADT now verifies the input FADT and reports any errors 3218 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 3219 3220 Disassembly of raw data buffers with byte initialization data now prefixes 3221 each output line with the current buffer offset. 3222 3223 Disassembly of ASF! table now includes all variable-length data fields at 3224 the end of some of the subtables. 3225 3226 The disassembler now emits a comment if a buffer appears to be a 3227 ResourceTemplate, but cannot be disassembled as such because the EndTag does 3228 not appear at the very end of the buffer. 3229 3230 AcpiExec - Added the "-t" command line option to enable the serialized mode 3231 of the AML interpreter. 3232 3233 ---------------------------------------- 3234 31 August 2006. Summary of changes for version 20060831: 3235 3236 1) ACPI CA Core Subsystem: 3237 3238 Miscellaneous fixes for the Table Manager: 3239 - Correctly initialize internal common FADT for all 64-bit "X" fields 3240 - Fixed a couple table mapping issues during table load 3241 - Fixed a couple alignment issues for IA64 3242 - Initialize input array to zero in AcpiInitializeTables 3243 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 3244 AcpiGetTableByIndex 3245 3246 Change for GPE support: when a "wake" GPE is received, all wake GPEs are now 3247 immediately disabled to prevent the waking GPE from firing again and to 3248 prevent other wake GPEs from interrupting the wake process. 3249 3250 Added the AcpiGpeCount global that tracks the number of processed GPEs, to 3251 be used for debugging systems with a large number of ACPI interrupts. 3252 3253 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 3254 both the ACPICA headers and the disassembler. 3255 3256 Example Code and Data Size: These are the sizes for the OS-independent 3257 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3258 debug version of the code includes the debug output trace mechanism and has 3259 a much larger code and data size. 3260 3261 Previous Release: 3262 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 3263 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 3264 Current Release: 3265 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 3266 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 3267 3268 3269 2) iASL Compiler/Disassembler and Tools: 3270 3271 Disassembler support for the DMAR ACPI table. 3272 3273 ---------------------------------------- 3274 23 August 2006. Summary of changes for version 20060823: 3275 3276 1) ACPI CA Core Subsystem: 3277 3278 The Table Manager component has been completely redesigned and 3279 reimplemented. The new design is much simpler, and reduces the overall code 3280 and data size of the kernel-resident ACPICA by approximately 5%. Also, it is 3281 now possible to obtain the ACPI tables very early during kernel 3282 initialization, even before dynamic memory management is initialized. 3283 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 3284 3285 Obsolete ACPICA interfaces: 3286 3287 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init 3288 time). 3289 - AcpiLoadTable: Not needed. 3290 - AcpiUnloadTable: Not needed. 3291 3292 New ACPICA interfaces: 3293 3294 - AcpiInitializeTables: Must be called before the table manager can be used. 3295 - AcpiReallocateRootTable: Used to transfer the root table to dynamically 3296 allocated memory after it becomes available. 3297 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables 3298 in the RSDT/XSDT. 3299 3300 Other ACPICA changes: 3301 3302 - AcpiGetTableHeader returns the actual mapped table header, not a copy. Use 3303 AcpiOsUnmapMemory to free this mapping. 3304 - AcpiGetTable returns the actual mapped table. The mapping is managed 3305 internally and must not be deleted by the caller. Use of this interface 3306 causes no additional dynamic memory allocation. 3307 - AcpiFindRootPointer: Support for physical addressing has been eliminated, 3308 it appeared to be unused. 3309 - The interface to AcpiOsMapMemory has changed to be consistent with the 3310 other allocation interfaces. 3311 - The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary 3312 parameters. 3313 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64- 3314 bit platforms. Was previously 64 bits on all platforms. 3315 - The interface to the ACPI Global Lock acquire/release macros have changed 3316 slightly since ACPICA no longer keeps a local copy of the FACS with a 3317 constructed pointer to the actual global lock. 3318 3319 Porting to the new table manager: 3320 3321 - AcpiInitializeTables: Must be called once, and can be called anytime 3322 during the OS initialization process. It allows the host to specify an area 3323 of memory to be used to store the internal version of the RSDT/XSDT (root 3324 table). This allows the host to access ACPI tables before memory management 3325 is initialized and running. 3326 - AcpiReallocateRootTable: Can be called after memory management is running 3327 to copy the root table to a dynamically allocated array, freeing up the 3328 scratch memory specified in the call to AcpiInitializeTables. 3329 - AcpiSubsystemInitialize: This existing interface is independent of the 3330 Table Manager, and does not have to be called before the Table Manager can 3331 be used, it only must be called before the rest of ACPICA can be used. 3332 - ACPI Tables: Some changes have been made to the names and structure of the 3333 actbl.h and actbl1.h header files and may require changes to existing code. 3334 For example, bitfields have been completely removed because of their lack of 3335 portability across C compilers. 3336 - Update interfaces to the Global Lock acquire/release macros if local 3337 versions are used. (see acwin.h) 3338 3339 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 3340 3341 New files: tbfind.c 3342 3343 Example Code and Data Size: These are the sizes for the OS-independent 3344 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3345 debug version of the code includes the debug output trace mechanism and has 3346 a much larger code and data size. 3347 3348 Previous Release: 3349 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 3350 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 3351 Current Release: 3352 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 3353 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 3354 3355 3356 2) iASL Compiler/Disassembler and Tools: 3357 3358 No changes for this release. 3359 3360 ---------------------------------------- 3361 21 July 2006. Summary of changes for version 20060721: 3362 3363 1) ACPI CA Core Subsystem: 3364 3365 The full source code for the ASL test suite used to validate the iASL 3366 compiler and the ACPICA core subsystem is being released with the ACPICA 3367 source for the first time. The source is contained in a separate package and 3368 consists of over 1100 files that exercise all ASL/AML operators. The package 3369 should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor 3370 Suietov) 3371 3372 Completed a new design and implementation for support of the ACPI Global 3373 Lock. On the OS side, the global lock is now treated as a standard AML 3374 mutex. Previously, multiple OS threads could "acquire" the global lock 3375 simultaneously. However, this could cause the BIOS to be starved out of the 3376 lock - especially in cases such as the Embedded Controller driver where 3377 there is a tight coupling between the OS and the BIOS. 3378 3379 Implemented an optimization for the ACPI Global Lock interrupt mechanism. 3380 The Global Lock interrupt handler no longer queues the execution of a 3381 separate thread to signal the global lock semaphore. Instead, the semaphore 3382 is signaled directly from the interrupt handler. 3383 3384 Implemented support within the AML interpreter for package objects that 3385 contain a larger AML length (package list length) than the package element 3386 count. In this case, the length of the package is truncated to match the 3387 package element count. Some BIOS code apparently modifies the package length 3388 on the fly, and this change supports this behavior. Provides compatibility 3389 with the MS AML interpreter. (With assistance from Fiodor Suietov) 3390 3391 Implemented a temporary fix for the BankValue parameter of a Bank Field to 3392 support all constant values, now including the Zero and One opcodes. 3393 Evaluation of this parameter must eventually be converted to a full TermArg 3394 evaluation. A not-implemented error is now returned (temporarily) for non- 3395 constant values for this parameter. 3396 3397 Fixed problem reports (Fiodor Suietov) integrated: 3398 - Fix for premature object deletion after CopyObject on Operation Region (BZ 3399 350) 3400 3401 Example Code and Data Size: These are the sizes for the OS-independent 3402 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3403 debug version of the code includes the debug output trace mechanism and has 3404 a much larger code and data size. 3405 3406 Previous Release: 3407 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 3408 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 3409 Current Release: 3410 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 3411 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 3412 3413 3414 2) iASL Compiler/Disassembler and Tools: 3415 3416 No changes for this release. 3417 3418 ---------------------------------------- 3419 07 July 2006. Summary of changes for version 20060707: 3420 3421 1) ACPI CA Core Subsystem: 3422 3423 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 3424 that do not allow the initialization of address pointers within packed 3425 structures - even though the hardware itself may support misaligned 3426 transfers. Some of the debug data structures are packed by default to 3427 minimize size. 3428 3429 Added an error message for the case where AcpiOsGetThreadId() returns zero. 3430 A non-zero value is required by the core ACPICA code to ensure the proper 3431 operation of AML mutexes and recursive control methods. 3432 3433 The DSDT is now the only ACPI table that determines whether the AML 3434 interpreter is in 32-bit or 64-bit mode. Not really a functional change, but 3435 the hooks for per-table 32/64 switching have been removed from the code. A 3436 clarification to the ACPI specification is forthcoming in ACPI 3.0B. 3437 3438 Fixed a possible leak of an OwnerID in the error path of 3439 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 3440 deletion to a single place in AcpiTbUninstallTable to correct possible leaks 3441 when using the AcpiTbDeleteTablesByType interface (with assistance from 3442 Lance Ortiz.) 3443 3444 Fixed a problem with Serialized control methods where the semaphore 3445 associated with the method could be over-signaled after multiple method 3446 invocations. 3447 3448 Fixed two issues with the locking of the internal namespace data structure. 3449 Both the Unload() operator and AcpiUnloadTable interface now lock the 3450 namespace during the namespace deletion associated with the table unload 3451 (with assistance from Linn Crosetto.) 3452 3453 Fixed problem reports (Valery Podrezov) integrated: 3454 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 3455 3456 Fixed problem reports (Fiodor Suietov) integrated: 3457 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 3458 - On Address Space handler deletion, needless deactivation call (BZ 374) 3459 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375) 3460 - Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone 3461 (BZ 376) 3462 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 3463 - Minimum Length of RSDT should be validated (BZ 379) 3464 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 3465 Handler (BZ (380) 3466 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded 3467 (BZ 381) 3468 3469 Example Code and Data Size: These are the sizes for the OS-independent 3470 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3471 debug version of the code includes the debug output trace mechanism and has 3472 a much larger code and data size. 3473 3474 Previous Release: 3475 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 3476 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 3477 Current Release: 3478 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 3479 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 3480 3481 3482 2) iASL Compiler/Disassembler and Tools: 3483 3484 Fixed problem reports: 3485 Compiler segfault when ASL contains a long (>1024) String declaration (BZ 3486 436) 3487 3488 ---------------------------------------- 3489 23 June 2006. Summary of changes for version 20060623: 3490 3491 1) ACPI CA Core Subsystem: 3492 3493 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 3494 allows the type to be customized to the host OS for improved efficiency 3495 (since a spinlock is usually a very small object.) 3496 3497 Implemented support for "ignored" bits in the ACPI registers. According to 3498 the ACPI specification, these bits should be preserved when writing the 3499 registers via a read/modify/write cycle. There are 3 bits preserved in this 3500 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 3501 3502 Implemented the initial deployment of new OSL mutex interfaces. Since some 3503 host operating systems have separate mutex and semaphore objects, this 3504 feature was requested. The base code now uses mutexes (and the new mutex 3505 interfaces) wherever a binary semaphore was used previously. However, for 3506 the current release, the mutex interfaces are defined as macros to map them 3507 to the existing semaphore interfaces. Therefore, no OSL changes are required 3508 at this time. (See acpiosxf.h) 3509 3510 Fixed several problems with the support for the control method SyncLevel 3511 parameter. The SyncLevel now works according to the ACPI specification and 3512 in concert with the Mutex SyncLevel parameter, since the current SyncLevel 3513 is a property of the executing thread. Mutual exclusion for control methods 3514 is now implemented with a mutex instead of a semaphore. 3515 3516 Fixed three instances of the use of the C shift operator in the bitfield 3517 support code (exfldio.c) to avoid the use of a shift value larger than the 3518 target data width. The behavior of C compilers is undefined in this case and 3519 can cause unpredictable results, and therefore the case must be detected and 3520 avoided. (Fiodor Suietov) 3521 3522 Added an info message whenever an SSDT or OEM table is loaded dynamically 3523 via the Load() or LoadTable() ASL operators. This should improve debugging 3524 capability since it will show exactly what tables have been loaded (beyond 3525 the tables present in the RSDT/XSDT.) 3526 3527 Example Code and Data Size: These are the sizes for the OS-independent 3528 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3529 debug version of the code includes the debug output trace mechanism and has 3530 a much larger code and data size. 3531 3532 Previous Release: 3533 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 3534 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 3535 Current Release: 3536 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 3537 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 3538 3539 3540 2) iASL Compiler/Disassembler and Tools: 3541 3542 No changes for this release. 3543 3544 ---------------------------------------- 3545 08 June 2006. Summary of changes for version 20060608: 3546 3547 1) ACPI CA Core Subsystem: 3548 3549 Converted the locking mutex used for the ACPI hardware to a spinlock. This 3550 change should eliminate all problems caused by attempting to acquire a 3551 semaphore at interrupt level, and it means that all ACPICA external 3552 interfaces that directly access the ACPI hardware can be safely called from 3553 interrupt level. OSL code that implements the semaphore interfaces should be 3554 able to eliminate any workarounds for being called at interrupt level. 3555 3556 Fixed a regression introduced in 20060526 where the ACPI device 3557 initialization could be prematurely aborted with an AE_NOT_FOUND if a device 3558 did not have an optional _INI method. 3559 3560 Fixed an IndexField issue where a write to the Data Register should be 3561 limited in size to the AccessSize (width) of the IndexField itself. (BZ 433, 3562 Fiodor Suietov) 3563 3564 Fixed problem reports (Valery Podrezov) integrated: 3565 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 3566 3567 Fixed problem reports (Fiodor Suietov) integrated: 3568 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 3569 3570 Removed four global mutexes that were obsolete and were no longer being 3571 used. 3572 3573 Example Code and Data Size: These are the sizes for the OS-independent 3574 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3575 debug version of the code includes the debug output trace mechanism and has 3576 a much larger code and data size. 3577 3578 Previous Release: 3579 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 3580 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 3581 Current Release: 3582 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 3583 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 3584 3585 3586 2) iASL Compiler/Disassembler and Tools: 3587 3588 Fixed a fault when using -g option (get tables from registry) on Windows 3589 machines. 3590 3591 Fixed problem reports integrated: 3592 - Generate error if CreateField NumBits parameter is zero. (BZ 405) 3593 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 3594 Suietov) 3595 - Global table revision override (-r) is ignored (BZ 413) 3596 3597 ---------------------------------------- 3598 26 May 2006. Summary of changes for version 20060526: 3599 3600 1) ACPI CA Core Subsystem: 3601 3602 Restructured, flattened, and simplified the internal interfaces for 3603 namespace object evaluation - resulting in smaller code, less CPU stack use, 3604 and fewer interfaces. (With assistance from Mikhail Kouzmich) 3605 3606 Fixed a problem with the CopyObject operator where the first parameter was 3607 not typed correctly for the parser, interpreter, compiler, and disassembler. 3608 Caused various errors and unexpected behavior. 3609 3610 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 3611 produced incorrect results with some C compilers. Since the behavior of C 3612 compilers when the shift value is larger than the datatype width is 3613 apparently not well defined, the interpreter now detects this condition and 3614 simply returns zero as expected in all such cases. (BZ 395) 3615 3616 Fixed problem reports (Valery Podrezov) integrated: 3617 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 3618 - Allow interpreter to handle nested method declarations (BZ 5361) 3619 3620 Fixed problem reports (Fiodor Suietov) integrated: 3621 - AcpiTerminate doesn't free debug memory allocation list objects (BZ 355) 3622 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356) 3623 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 3624 - Resource Manager should return AE_TYPE for non-device objects (BZ 358) 3625 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 3626 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 3627 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 3628 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 3629 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365) 3630 - Status of the Global Initialization Handler call not used (BZ 366) 3631 - Incorrect object parameter to Global Initialization Handler (BZ 367) 3632 3633 Example Code and Data Size: These are the sizes for the OS-independent 3634 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3635 debug version of the code includes the debug output trace mechanism and has 3636 a much larger code and data size. 3637 3638 Previous Release: 3639 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 3640 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 3641 Current Release: 3642 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 3643 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 3644 3645 3646 2) iASL Compiler/Disassembler and Tools: 3647 3648 Modified the parser to allow the names IO, DMA, and IRQ to be used as 3649 namespace identifiers with no collision with existing resource descriptor 3650 macro names. This provides compatibility with other ASL compilers and is 3651 most useful for disassembly/recompilation of existing tables without parse 3652 errors. (With assistance from Thomas Renninger) 3653 3654 Disassembler: fixed an incorrect disassembly problem with the 3655 DataTableRegion and CopyObject operators. Fixed a possible fault during 3656 disassembly of some Alias operators. 3657 3658 ---------------------------------------- 3659 12 May 2006. Summary of changes for version 20060512: 3660 3661 1) ACPI CA Core Subsystem: 3662 3663 Replaced the AcpiOsQueueForExecution interface with a new interface named 3664 AcpiOsExecute. The major difference is that the new interface does not have 3665 a Priority parameter, this appeared to be useless and has been replaced by a 3666 Type parameter. The Type tells the host what type of execution is being 3667 requested, such as global lock handler, notify handler, GPE handler, etc. 3668 This allows the host to queue and execute the request as appropriate for the 3669 request type, possibly using different work queues and different priorities 3670 for the various request types. This enables fixes for multithreading 3671 deadlock problems such as BZ #5534, and will require changes to all existing 3672 OS interface layers. (Alexey Starikovskiy and Bob Moore) 3673 3674 Fixed a possible memory leak associated with the support for the so-called 3675 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 3676 Suietov) 3677 3678 Fixed a problem with the Load() operator where a table load from an 3679 operation region could overwrite an internal table buffer by up to 7 bytes 3680 and cause alignment faults on IPF systems. (With assistance from Luming Yu) 3681 3682 Example Code and Data Size: These are the sizes for the OS-independent 3683 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3684 debug version of the code includes the debug output trace mechanism and has 3685 a much larger code and data size. 3686 3687 Previous Release: 3688 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 3689 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 3690 Current Release: 3691 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 3692 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 3693 3694 3695 3696 2) iASL Compiler/Disassembler and Tools: 3697 3698 Disassembler: Implemented support to cross reference the internal namespace 3699 and automatically generate ASL External() statements for symbols not defined 3700 within the current table being disassembled. This will simplify the 3701 disassembly and recompilation of interdependent tables such as SSDTs since 3702 these statements will no longer have to be added manually. 3703 3704 Disassembler: Implemented experimental support to automatically detect 3705 invocations of external control methods and generate appropriate External() 3706 statements. This is problematic because the AML cannot be correctly parsed 3707 until the number of arguments for each control method is known. Currently, 3708 standalone method invocations and invocations as the source operand of a 3709 Store() statement are supported. 3710 3711 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 3712 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 3713 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 3714 more readable and likely closer to the original ASL source. 3715 3716 ---------------------------------------- 3717 21 April 2006. Summary of changes for version 20060421: 3718 3719 1) ACPI CA Core Subsystem: 3720 3721 Removed a device initialization optimization introduced in 20051216 where 3722 the _STA method was not run unless an _INI was also present for the same 3723 device. This optimization could cause problems because it could allow _INI 3724 methods to be run within a not-present device subtree. (If a not-present 3725 device had no _INI, _STA would not be run, the not-present status would not 3726 be discovered, and the children of the device would be incorrectly 3727 traversed.) 3728 3729 Implemented a new _STA optimization where namespace subtrees that do not 3730 contain _INI are identified and ignored during device initialization. 3731 Selectively running _STA can significantly improve boot time on large 3732 machines (with assistance from Len Brown.) 3733 3734 Implemented support for the device initialization case where the returned 3735 _STA flags indicate a device not-present but functioning. In this case, _INI 3736 is not run, but the device children are examined for presence, as per the 3737 ACPI specification. 3738 3739 Implemented an additional change to the IndexField support in order to 3740 conform to MS behavior. The value written to the Index Register is not 3741 simply a byte offset, it is a byte offset in units of the access width of 3742 the parent Index Field. (Fiodor Suietov) 3743 3744 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 3745 interface is called during the creation of all AML operation regions, and 3746 allows the host OS to exert control over what addresses it will allow the 3747 AML code to access. Operation Regions whose addresses are disallowed will 3748 cause a runtime exception when they are actually accessed (will not affect 3749 or abort table loading.) See oswinxf or osunixxf for an example 3750 implementation. 3751 3752 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 3753 interface allows the host OS to match the various "optional" 3754 interface/behavior strings for the _OSI predefined control method as 3755 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 3756 for an example implementation. 3757 3758 Restructured and corrected various problems in the exception handling code 3759 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 3760 (with assistance from Takayoshi Kochi.) 3761 3762 Modified the Linux source converter to ignore quoted string literals while 3763 converting identifiers from mixed to lower case. This will correct problems 3764 with the disassembler and other areas where such strings must not be 3765 modified. 3766 3767 The ACPI_FUNCTION_* macros no longer require quotes around the function 3768 name. This allows the Linux source converter to convert the names, now that 3769 the converter ignores quoted strings. 3770 3771 Example Code and Data Size: These are the sizes for the OS-independent 3772 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3773 debug version of the code includes the debug output trace mechanism and has 3774 a much larger code and data size. 3775 3776 Previous Release: 3777 3778 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 3779 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 3780 Current Release: 3781 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 3782 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 3783 3784 3785 2) iASL Compiler/Disassembler and Tools: 3786 3787 Implemented 3 new warnings for iASL, and implemented multiple warning levels 3788 (w2 flag). 3789 3790 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not 3791 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 3792 check for the possible timeout, a warning is issued. 3793 3794 2) Useless operators: If an ASL operator does not specify an optional target 3795 operand and it also does not use the function return value from the 3796 operator, a warning is issued since the operator effectively does nothing. 3797 3798 3) Unreferenced objects: If a namespace object is created, but never 3799 referenced, a warning is issued. This is a warning level 2 since there are 3800 cases where this is ok, such as when a secondary table is loaded that uses 3801 the unreferenced objects. Even so, care is taken to only flag objects that 3802 don't look like they will ever be used. For example, the reserved methods 3803 (starting with an underscore) are usually not referenced because it is 3804 expected that the OS will invoke them. 3805 3806 ---------------------------------------- 3807 31 March 2006. Summary of changes for version 20060331: 3808 3809 1) ACPI CA Core Subsystem: 3810 3811 Implemented header file support for the following additional ACPI tables: 3812 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support, 3813 all current and known ACPI tables are now defined in the ACPICA headers and 3814 are available for use by device drivers and other software. 3815 3816 Implemented support to allow tables that contain ACPI names with invalid 3817 characters to be loaded. Previously, this would cause the table load to 3818 fail, but since there are several known cases of such tables on existing 3819 machines, this change was made to enable ACPI support for them. Also, this 3820 matches the behavior of the Microsoft ACPI implementation. 3821 3822 Fixed a couple regressions introduced during the memory optimization in the 3823 20060317 release. The namespace node definition required additional 3824 reorganization and an internal datatype that had been changed to 8-bit was 3825 restored to 32-bit. (Valery Podrezov) 3826 3827 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 3828 could be passed through to AcpiOsReleaseObject which is unexpected. Such 3829 null pointers are now trapped and ignored, matching the behavior of the 3830 previous implementation before the deployment of AcpiOsReleaseObject. 3831 (Valery Podrezov, Fiodor Suietov) 3832 3833 Fixed a memory mapping leak during the deletion of a SystemMemory operation 3834 region where a cached memory mapping was not deleted. This became a 3835 noticeable problem for operation regions that are defined within frequently 3836 used control methods. (Dana Meyers) 3837 3838 Reorganized the ACPI table header files into two main files: one for the 3839 ACPI tables consumed by the ACPICA core, and another for the miscellaneous 3840 ACPI tables that are consumed by the drivers and other software. The various 3841 FADT definitions were merged into one common section and three different 3842 tables (ACPI 1.0, 1.0+, and 2.0) 3843 3844 Example Code and Data Size: These are the sizes for the OS-independent 3845 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3846 debug version of the code includes the debug output trace mechanism and has 3847 a much larger code and data size. 3848 3849 Previous Release: 3850 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 3851 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 3852 Current Release: 3853 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 3854 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 3855 3856 3857 2) iASL Compiler/Disassembler and Tools: 3858 3859 Disassembler: Implemented support to decode and format all non-AML ACPI 3860 tables (tables other than DSDTs and SSDTs.) This includes the new tables 3861 added to the ACPICA headers, therefore all current and known ACPI tables are 3862 supported. 3863 3864 Disassembler: The change to allow ACPI names with invalid characters also 3865 enables the disassembly of such tables. Invalid characters within names are 3866 changed to '*' to make the name printable; the iASL compiler will still 3867 generate an error for such names, however, since this is an invalid ACPI 3868 character. 3869 3870 Implemented an option for AcpiXtract (-a) to extract all tables found in the 3871 input file. The default invocation extracts only the DSDTs and SSDTs. 3872 3873 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 3874 makefile for the AcpiXtract utility. 3875 3876 ---------------------------------------- 3877 17 March 2006. Summary of changes for version 20060317: 3878 3879 1) ACPI CA Core Subsystem: 3880 3881 Implemented the use of a cache object for all internal namespace nodes. 3882 Since there are about 1000 static nodes in a typical system, this will 3883 decrease memory use for cache implementations that minimize per-allocation 3884 overhead (such as a slab allocator.) 3885 3886 Removed the reference count mechanism for internal namespace nodes, since it 3887 was deemed unnecessary. This reduces the size of each namespace node by 3888 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case, 3889 and 32 bytes for the 64-bit case. 3890 3891 Optimized several internal data structures to reduce object size on 64-bit 3892 platforms by packing data within the 64-bit alignment. This includes the 3893 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 3894 instances corresponding to the namespace objects. 3895 3896 Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1" 3897 and "Windows 2006". 3898 3899 Split the allocation tracking mechanism out to a separate file, from 3900 utalloc.c to uttrack.c. This mechanism appears to be only useful for 3901 application-level code. Kernels may wish to not include uttrack.c in 3902 distributions. 3903 3904 Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated 3905 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 3906 macros.) 3907 3908 Code and Data Size: These are the sizes for the acpica.lib produced by the 3909 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3910 driver or OSPM code. The debug version of the code includes the debug output 3911 trace mechanism and has a much larger code and data size. Note that these 3912 values will vary depending on the efficiency of the compiler and the 3913 compiler options used during generation. 3914 3915 Previous Release: 3916 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3917 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 3918 Current Release: 3919 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 3920 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 3921 3922 3923 2) iASL Compiler/Disassembler and Tools: 3924 3925 Implemented an ANSI C version of the acpixtract utility. This version will 3926 automatically extract the DSDT and all SSDTs from the input acpidump text 3927 file and dump the binary output to separate files. It can also display a 3928 summary of the input file including the headers for each table found and 3929 will extract any single ACPI table, with any signature. (See 3930 source/tools/acpixtract) 3931 3932 ---------------------------------------- 3933 10 March 2006. Summary of changes for version 20060310: 3934 3935 1) ACPI CA Core Subsystem: 3936 3937 Tagged all external interfaces to the subsystem with the new 3938 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist 3939 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 3940 macro. The default definition is NULL. 3941 3942 Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId. 3943 This allows the host to define this as necessary to simplify kernel 3944 integration. The default definition is ACPI_NATIVE_UINT. 3945 3946 Fixed two interpreter problems related to error processing, the deletion of 3947 objects, and placing invalid pointers onto the internal operator result 3948 stack. BZ 6028, 6151 (Valery Podrezov) 3949 3950 Increased the reference count threshold where a warning is emitted for large 3951 reference counts in order to eliminate unnecessary warnings on systems with 3952 large namespaces (especially 64-bit.) Increased the value from 0x400 to 3953 0x800. 3954 3955 Due to universal disagreement as to the meaning of the 'c' in the calloc() 3956 function, the ACPI_MEM_CALLOCATE macro has been renamed to 3957 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 3958 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 3959 ACPI_FREE. 3960 3961 Code and Data Size: These are the sizes for the acpica.lib produced by the 3962 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3963 driver or OSPM code. The debug version of the code includes the debug output 3964 trace mechanism and has a much larger code and data size. Note that these 3965 values will vary depending on the efficiency of the compiler and the 3966 compiler options used during generation. 3967 3968 Previous Release: 3969 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 3970 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 3971 Current Release: 3972 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3973 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 3974 3975 3976 2) iASL Compiler/Disassembler: 3977 3978 Disassembler: implemented support for symbolic resource descriptor 3979 references. If a CreateXxxxField operator references a fixed offset within a 3980 resource descriptor, a name is assigned to the descriptor and the offset is 3981 translated to the appropriate resource tag and pathname. The addition of 3982 this support brings the disassembled code very close to the original ASL 3983 source code and helps eliminate run-time errors when the disassembled code 3984 is modified (and recompiled) in such a way as to invalidate the original 3985 fixed offsets. 3986 3987 Implemented support for a Descriptor Name as the last parameter to the ASL 3988 Register() macro. This parameter was inadvertently left out of the ACPI 3989 specification, and will be added for ACPI 3.0b. 3990 3991 Fixed a problem where the use of the "_OSI" string (versus the full path 3992 "\_OSI") caused an internal compiler error. ("No back ptr to op") 3993 3994 Fixed a problem with the error message that occurs when an invalid string is 3995 used for a _HID object (such as one with an embedded asterisk: "*PNP010A".) 3996 The correct message is now displayed. 3997 3998 ---------------------------------------- 3999 17 February 2006. Summary of changes for version 20060217: 4000 4001 1) ACPI CA Core Subsystem: 4002 4003 Implemented a change to the IndexField support to match the behavior of the 4004 Microsoft AML interpreter. The value written to the Index register is now a 4005 byte offset, no longer an index based upon the width of the Data register. 4006 This should fix IndexField problems seen on some machines where the Data 4007 register is not exactly one byte wide. The ACPI specification will be 4008 clarified on this point. 4009 4010 Fixed a problem where several resource descriptor types could overrun the 4011 internal descriptor buffer due to size miscalculation: VendorShort, 4012 VendorLong, and Interrupt. This was noticed on IA64 machines, but could 4013 affect all platforms. 4014 4015 Fixed a problem where individual resource descriptors were misaligned within 4016 the internal buffer, causing alignment faults on IA64 platforms. 4017 4018 Code and Data Size: These are the sizes for the acpica.lib produced by the 4019 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 4020 driver or OSPM code. The debug version of the code includes the debug output 4021 trace mechanism and has a much larger code and data size. Note that these 4022 values will vary depending on the efficiency of the compiler and the 4023 compiler options used during generation. 4024 4025 Previous Release: 4026 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 4027 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 4028 Current Release: 4029 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 4030 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 4031 4032 4033 2) iASL Compiler/Disassembler: 4034 4035 Implemented support for new reserved names: _WDG and _WED are Microsoft 4036 extensions for Windows Instrumentation Management, _TDL is a new ACPI- 4037 defined method (Throttling Depth Limit.) 4038 4039 Fixed a problem where a zero-length VendorShort or VendorLong resource 4040 descriptor was incorrectly emitted as a descriptor of length one. 4041 4042 ---------------------------------------- 4043 10 February 2006. Summary of changes for version 20060210: 4044 4045 1) ACPI CA Core Subsystem: 4046 4047 Removed a couple of extraneous ACPI_ERROR messages that appeared during 4048 normal execution. These became apparent after the conversion from 4049 ACPI_DEBUG_PRINT. 4050 4051 Fixed a problem where the CreateField operator could hang if the BitIndex or 4052 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 4053 4054 Fixed a problem where a DeRefOf operation on a buffer object incorrectly 4055 failed with an exception. This also fixes a couple of related RefOf and 4056 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 4057 4058 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of 4059 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ 4060 5480) 4061 4062 Implemented a memory cleanup at the end of the execution of each iteration 4063 of an AML While() loop, preventing the accumulation of outstanding objects. 4064 (Valery Podrezov, BZ 5427) 4065 4066 Eliminated a chunk of duplicate code in the object resolution code. (Valery 4067 Podrezov, BZ 5336) 4068 4069 Fixed several warnings during the 64-bit code generation. 4070 4071 The AcpiSrc source code conversion tool now inserts one line of whitespace 4072 after an if() statement that is followed immediately by a comment, improving 4073 readability of the Linux code. 4074 4075 Code and Data Size: The current and previous library sizes for the core 4076 subsystem are shown below. These are the code and data sizes for the 4077 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4078 values do not include any ACPI driver or OSPM code. The debug version of the 4079 code includes the debug output trace mechanism and has a much larger code 4080 and data size. Note that these values will vary depending on the efficiency 4081 of the compiler and the compiler options used during generation. 4082 4083 Previous Release: 4084 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 4085 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 4086 Current Release: 4087 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 4088 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 4089 4090 4091 2) iASL Compiler/Disassembler: 4092 4093 Fixed a problem with the disassembly of a BankField operator with a complex 4094 expression for the BankValue parameter. 4095 4096 ---------------------------------------- 4097 27 January 2006. Summary of changes for version 20060127: 4098 4099 1) ACPI CA Core Subsystem: 4100 4101 Implemented support in the Resource Manager to allow unresolved namestring 4102 references within resource package objects for the _PRT method. This support 4103 is in addition to the previously implemented unresolved reference support 4104 within the AML parser. If the interpreter slack mode is enabled, these 4105 unresolved references will be passed through to the caller as a NULL package 4106 entry. 4107 4108 Implemented and deployed new macros and functions for error and warning 4109 messages across the subsystem. These macros are simpler and generate less 4110 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 4111 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 4112 macros remain defined to allow ACPI drivers time to migrate to the new 4113 macros. 4114 4115 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the 4116 Acquire/Release Lock OSL interfaces. 4117 4118 Fixed a problem where Alias ASL operators are sometimes not correctly 4119 resolved, in both the interpreter and the iASL compiler. 4120 4121 Fixed several problems with the implementation of the ConcatenateResTemplate 4122 ASL operator. As per the ACPI specification, zero length buffers are now 4123 treated as a single EndTag. One-length buffers always cause a fatal 4124 exception. Non-zero length buffers that do not end with a full 2-byte EndTag 4125 cause a fatal exception. 4126 4127 Fixed a possible structure overwrite in the AcpiGetObjectInfo external 4128 interface. (With assistance from Thomas Renninger) 4129 4130 Code and Data Size: The current and previous library sizes for the core 4131 subsystem are shown below. These are the code and data sizes for the 4132 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4133 values do not include any ACPI driver or OSPM code. The debug version of the 4134 code includes the debug output trace mechanism and has a much larger code 4135 and data size. Note that these values will vary depending on the efficiency 4136 of the compiler and the compiler options used during generation. 4137 4138 Previous Release: 4139 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 4140 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 4141 Current Release: 4142 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 4143 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 4144 4145 4146 2) iASL Compiler/Disassembler: 4147 4148 Fixed an internal error that was generated for any forward references to ASL 4149 Alias objects. 4150 4151 ---------------------------------------- 4152 13 January 2006. Summary of changes for version 20060113: 4153 4154 1) ACPI CA Core Subsystem: 4155 4156 Added 2006 copyright to all module headers and signons. This affects 4157 virtually every file in the ACPICA core subsystem, iASL compiler, and the 4158 utilities. 4159 4160 Enhanced the ACPICA error reporting in order to simplify user migration to 4161 the non-debug version of ACPICA. Replaced all instances of the 4162 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug 4163 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 4164 respectively. This preserves all error and warning messages in the non-debug 4165 version of the ACPICA code (this has been referred to as the "debug lite" 4166 option.) Over 200 cases were converted to create a total of over 380 4167 error/warning messages across the ACPICA code. This increases the code and 4168 data size of the default non-debug version of the code somewhat (about 13K), 4169 but all error/warning reporting may be disabled if desired (and code 4170 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 4171 configuration option. The size of the debug version of ACPICA remains about 4172 the same. 4173 4174 Fixed a memory leak within the AML Debugger "Set" command. One object was 4175 not properly deleted for every successful invocation of the command. 4176 4177 Code and Data Size: The current and previous library sizes for the core 4178 subsystem are shown below. These are the code and data sizes for the 4179 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4180 values do not include any ACPI driver or OSPM code. The debug version of the 4181 code includes the debug output trace mechanism and has a much larger code 4182 and data size. Note that these values will vary depending on the efficiency 4183 of the compiler and the compiler options used during generation. 4184 4185 Previous Release: 4186 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 4187 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 4188 Current Release: 4189 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 4190 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 4191 4192 4193 2) iASL Compiler/Disassembler: 4194 4195 The compiler now officially supports the ACPI 3.0a specification that was 4196 released on December 30, 2005. (Specification is available at www.acpi.info) 4197 4198 ---------------------------------------- 4199 16 December 2005. Summary of changes for version 20051216: 4200 4201 1) ACPI CA Core Subsystem: 4202 4203 Implemented optional support to allow unresolved names within ASL Package 4204 objects. A null object is inserted in the package when a named reference 4205 cannot be located in the current namespace. Enabled via the interpreter 4206 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines 4207 that contain such code. 4208 4209 Implemented an optimization to the initialization sequence that can improve 4210 boot time. During ACPI device initialization, the _STA method is now run if 4211 and only if the _INI method exists. The _STA method is used to determine if 4212 the device is present; An _INI can only be run if _STA returns present, but 4213 it is a waste of time to run the _STA method if the _INI does not exist. 4214 (Prototype and assistance from Dong Wei) 4215 4216 Implemented use of the C99 uintptr_t for the pointer casting macros if it is 4217 available in the current compiler. Otherwise, the default (void *) cast is 4218 used as before. 4219 4220 Fixed some possible memory leaks found within the execution path of the 4221 Break, Continue, If, and CreateField operators. (Valery Podrezov) 4222 4223 Fixed a problem introduced in the 20051202 release where an exception is 4224 generated during method execution if a control method attempts to declare 4225 another method. 4226 4227 Moved resource descriptor string constants that are used by both the AML 4228 disassembler and AML debugger to the common utilities directory so that 4229 these components are independent. 4230 4231 Implemented support in the AcpiExec utility (-e switch) to globally ignore 4232 exceptions during control method execution (method is not aborted.) 4233 4234 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 4235 generation. 4236 4237 Code and Data Size: The current and previous library sizes for the core 4238 subsystem are shown below. These are the code and data sizes for the 4239 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4240 values do not include any ACPI driver or OSPM code. The debug version of the 4241 code includes the debug output trace mechanism and has a much larger code 4242 and data size. Note that these values will vary depending on the efficiency 4243 of the compiler and the compiler options used during generation. 4244 4245 Previous Release: 4246 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4247 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 4248 Current Release: 4249 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 4250 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 4251 4252 4253 2) iASL Compiler/Disassembler: 4254 4255 Fixed a problem where a CPU stack overflow fault could occur if a recursive 4256 method call was made from within a Return statement. 4257 4258 ---------------------------------------- 4259 02 December 2005. Summary of changes for version 20051202: 4260 4261 1) ACPI CA Core Subsystem: 4262 4263 Modified the parsing of control methods to no longer create namespace 4264 objects during the first pass of the parse. Objects are now created only 4265 during the execute phase, at the moment the namespace creation operator is 4266 encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This 4267 should eliminate ALREADY_EXISTS exceptions seen on some machines where 4268 reentrant control methods are protected by an AML mutex. The mutex will now 4269 correctly block multiple threads from attempting to create the same object 4270 more than once. 4271 4272 Increased the number of available Owner Ids for namespace object tracking 4273 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on 4274 some machines with a large number of ACPI tables (either static or dynamic). 4275 4276 Fixed a problem with the AcpiExec utility where a fault could occur when the 4277 -b switch (batch mode) is used. 4278 4279 Enhanced the namespace dump routine to output the owner ID for each 4280 namespace object. 4281 4282 Code and Data Size: The current and previous library sizes for the core 4283 subsystem are shown below. These are the code and data sizes for the 4284 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4285 values do not include any ACPI driver or OSPM code. The debug version of the 4286 code includes the debug output trace mechanism and has a much larger code 4287 and data size. Note that these values will vary depending on the efficiency 4288 of the compiler and the compiler options used during generation. 4289 4290 Previous Release: 4291 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4292 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4293 Current Release: 4294 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4295 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 4296 4297 4298 2) iASL Compiler/Disassembler: 4299 4300 Fixed a parse error during compilation of certain Switch/Case constructs. To 4301 simplify the parse, the grammar now allows for multiple Default statements 4302 and this error is now detected and flagged during the analysis phase. 4303 4304 Disassembler: The disassembly now includes the contents of the original 4305 table header within a comment at the start of the file. This includes the 4306 name and version of the original ASL compiler. 4307 4308 ---------------------------------------- 4309 17 November 2005. Summary of changes for version 20051117: 4310 4311 1) ACPI CA Core Subsystem: 4312 4313 Fixed a problem in the AML parser where the method thread count could be 4314 decremented below zero if any errors occurred during the method parse phase. 4315 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines. 4316 This also fixed a related regression with the mechanism that detects and 4317 corrects methods that cannot properly handle reentrancy (related to the 4318 deployment of the new OwnerId mechanism.) 4319 4320 Eliminated the pre-parsing of control methods (to detect errors) during 4321 table load. Related to the problem above, this was causing unwind issues if 4322 any errors occurred during the parse, and it seemed to be overkill. A table 4323 load should not be aborted if there are problems with any single control 4324 method, thus rendering this feature rather pointless. 4325 4326 Fixed a problem with the new table-driven resource manager where an internal 4327 buffer overflow could occur for small resource templates. 4328 4329 Implemented a new external interface, AcpiGetVendorResource. This interface 4330 will find and return a vendor-defined resource descriptor within a _CRS or 4331 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas. 4332 4333 Removed the length limit (200) on string objects as per the upcoming ACPI 4334 3.0A specification. This affects the following areas of the interpreter: 1) 4335 any implicit conversion of a Buffer to a String, 2) a String object result 4336 of the ASL Concatentate operator, 3) the String object result of the ASL 4337 ToString operator. 4338 4339 Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER 4340 on a semaphore object would incorrectly timeout. This allows the 4341 multithreading features of the AcpiExec utility to work properly under 4342 Windows. 4343 4344 Updated the Linux makefiles for the iASL compiler and AcpiExec to include 4345 the recently added file named "utresrc.c". 4346 4347 Code and Data Size: The current and previous library sizes for the core 4348 subsystem are shown below. These are the code and data sizes for the 4349 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4350 values do not include any ACPI driver or OSPM code. The debug version of the 4351 code includes the debug output trace mechanism and has a much larger code 4352 and data size. Note that these values will vary depending on the efficiency 4353 of the compiler and the compiler options used during generation. 4354 4355 Previous Release: 4356 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 4357 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4358 Current Release: 4359 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4360 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4361 4362 4363 2) iASL Compiler/Disassembler: 4364 4365 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 4366 specification. For the iASL compiler, this means that string literals within 4367 the source ASL can be of any length. 4368 4369 Enhanced the listing output to dump the AML code for resource descriptors 4370 immediately after the ASL code for each descriptor, instead of in a block at 4371 the end of the entire resource template. 4372 4373 Enhanced the compiler debug output to dump the entire original parse tree 4374 constructed during the parse phase, before any transforms are applied to the 4375 tree. The transformed tree is dumped also. 4376 4377 ---------------------------------------- 4378 02 November 2005. Summary of changes for version 20051102: 4379 4380 1) ACPI CA Core Subsystem: 4381 4382 Modified the subsystem initialization sequence to improve GPE support. The 4383 GPE initialization has been split into two parts in order to defer execution 4384 of the _PRW methods (Power Resources for Wake) until after the hardware is 4385 fully initialized and the SCI handler is installed. This allows the _PRW 4386 methods to access fields protected by the Global Lock. This will fix systems 4387 where a NO_GLOBAL_LOCK exception has been seen during initialization. 4388 4389 Converted the ACPI internal object disassemble and display code within the 4390 AML debugger to fully table-driven operation, reducing code size and 4391 increasing maintainability. 4392 4393 Fixed a regression with the ConcatenateResTemplate() ASL operator introduced 4394 in the 20051021 release. 4395 4396 Implemented support for "local" internal ACPI object types within the 4397 debugger "Object" command and the AcpiWalkNamespace external interfaces. 4398 These local types include RegionFields, BankFields, IndexFields, Alias, and 4399 reference objects. 4400 4401 Moved common AML resource handling code into a new file, "utresrc.c". This 4402 code is shared by both the Resource Manager and the AML Debugger. 4403 4404 Code and Data Size: The current and previous library sizes for the core 4405 subsystem are shown below. These are the code and data sizes for the 4406 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4407 values do not include any ACPI driver or OSPM code. The debug version of the 4408 code includes the debug output trace mechanism and has a much larger code 4409 and data size. Note that these values will vary depending on the efficiency 4410 of the compiler and the compiler options used during generation. 4411 4412 Previous Release: 4413 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 4414 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 4415 Current Release: 4416 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 4417 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4418 4419 4420 2) iASL Compiler/Disassembler: 4421 4422 Fixed a problem with very large initializer lists (more than 4000 elements) 4423 for both Buffer and Package objects where the parse stack could overflow. 4424 4425 Enhanced the pre-compile source code scan for non-ASCII characters to ignore 4426 characters within comment fields. The scan is now always performed and is no 4427 longer optional, detecting invalid characters within a source file 4428 immediately rather than during the parse phase or later. 4429 4430 Enhanced the ASL grammar definition to force early reductions on all list- 4431 style grammar elements so that the overall parse stack usage is greatly 4432 reduced. This should improve performance and reduce the possibility of parse 4433 stack overflow. 4434 4435 Eliminated all reduce/reduce conflicts in the iASL parser generation. Also, 4436 with the addition of a %expected statement, the compiler generates from 4437 source with no warnings. 4438 4439 Fixed a possible segment fault in the disassembler if the input filename 4440 does not contain a "dot" extension (Thomas Renninger). 4441 4442 ---------------------------------------- 4443 21 October 2005. Summary of changes for version 20051021: 4444 4445 1) ACPI CA Core Subsystem: 4446 4447 Implemented support for the EM64T and other x86-64 processors. This 4448 essentially entails recognizing that these processors support non-aligned 4449 memory transfers. Previously, all 64-bit processors were assumed to lack 4450 hardware support for non-aligned transfers. 4451 4452 Completed conversion of the Resource Manager to nearly full table-driven 4453 operation. Specifically, the resource conversion code (convert AML to 4454 internal format and the reverse) and the debug code to dump internal 4455 resource descriptors are fully table-driven, reducing code and data size and 4456 improving maintainability. 4457 4458 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word 4459 on 64-bit processors instead of a fixed 32-bit word. (With assistance from 4460 Alexey Starikovskiy) 4461 4462 Implemented support within the resource conversion code for the Type- 4463 Specific byte within the various ACPI 3.0 *WordSpace macros. 4464 4465 Fixed some issues within the resource conversion code for the type-specific 4466 flags for both Memory and I/O address resource descriptors. For Memory, 4467 implemented support for the MTP and TTP flags. For I/O, split the TRS and 4468 TTP flags into two separate fields. 4469 4470 Code and Data Size: The current and previous library sizes for the core 4471 subsystem are shown below. These are the code and data sizes for the 4472 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4473 values do not include any ACPI driver or OSPM code. The debug version of the 4474 code includes the debug output trace mechanism and has a much larger code 4475 and data size. Note that these values will vary depending on the efficiency 4476 of the compiler and the compiler options used during generation. 4477 4478 Previous Release: 4479 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 4480 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 4481 Current Release: 4482 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 4483 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 4484 4485 4486 4487 2) iASL Compiler/Disassembler: 4488 4489 Relaxed a compiler restriction that disallowed a ResourceIndex byte if the 4490 corresponding ResourceSource string was not also present in a resource 4491 descriptor declaration. This restriction caused problems with existing 4492 AML/ASL code that includes the Index byte without the string. When such AML 4493 was disassembled, it could not be compiled without modification. Further, 4494 the modified code created a resource template with a different size than the 4495 original, breaking code that used fixed offsets into the resource template 4496 buffer. 4497 4498 Removed a recent feature of the disassembler to ignore a lone ResourceIndex 4499 byte. This byte is now emitted if present so that the exact AML can be 4500 reproduced when the disassembled code is recompiled. 4501 4502 Improved comments and text alignment for the resource descriptor code 4503 emitted by the disassembler. 4504 4505 Implemented disassembler support for the ACPI 3.0 AccessSize field within a 4506 Register() resource descriptor. 4507 4508 ---------------------------------------- 4509 30 September 2005. Summary of changes for version 20050930: 4510 4511 1) ACPI CA Core Subsystem: 4512 4513 Completed a major overhaul of the Resource Manager code - specifically, 4514 optimizations in the area of the AML/internal resource conversion code. The 4515 code has been optimized to simplify and eliminate duplicated code, CPU stack 4516 use has been decreased by optimizing function parameters and local 4517 variables, and naming conventions across the manager have been standardized 4518 for clarity and ease of maintenance (this includes function, parameter, 4519 variable, and struct/typedef names.) The update may force changes in some 4520 driver code, depending on how resources are handled by the host OS. 4521 4522 All Resource Manager dispatch and information tables have been moved to a 4523 single location for clarity and ease of maintenance. One new file was 4524 created, named "rsinfo.c". 4525 4526 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 4527 guarantee that the argument is not evaluated twice, making them less prone 4528 to macro side-effects. However, since there exists the possibility of 4529 additional stack use if a particular compiler cannot optimize them (such as 4530 in the debug generation case), the original macros are optionally available. 4531 Note that some invocations of the return_VALUE macro may now cause size 4532 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to 4533 eliminate these. (From Randy Dunlap) 4534 4535 Implemented a new mechanism to enable debug tracing for individual control 4536 methods. A new external interface, AcpiDebugTrace, is provided to enable 4537 this mechanism. The intent is to allow the host OS to easily enable and 4538 disable tracing for problematic control methods. This interface can be 4539 easily exposed to a user or debugger interface if desired. See the file 4540 psxface.c for details. 4541 4542 AcpiUtCallocate will now return a valid pointer if a length of zero is 4543 specified - a length of one is used and a warning is issued. This matches 4544 the behavior of AcpiUtAllocate. 4545 4546 Code and Data Size: The current and previous library sizes for the core 4547 subsystem are shown below. These are the code and data sizes for the 4548 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4549 values do not include any ACPI driver or OSPM code. The debug version of the 4550 code includes the debug output trace mechanism and has a much larger code 4551 and data size. Note that these values will vary depending on the efficiency 4552 of the compiler and the compiler options used during generation. 4553 4554 Previous Release: 4555 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 4556 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 4557 Current Release: 4558 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 4559 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 4560 4561 4562 2) iASL Compiler/Disassembler: 4563 4564 A remark is issued if the effective compile-time length of a package or 4565 buffer is zero. Previously, this was a warning. 4566 4567 ---------------------------------------- 4568 16 September 2005. Summary of changes for version 20050916: 4569 4570 1) ACPI CA Core Subsystem: 4571 4572 Fixed a problem within the Resource Manager where support for the Generic 4573 Register descriptor was not fully implemented. This descriptor is now fully 4574 recognized, parsed, disassembled, and displayed. 4575 4576 Completely restructured the Resource Manager code to utilize table-driven 4577 dispatch and lookup, eliminating many of the large switch() statements. This 4578 reduces overall subsystem code size and code complexity. Affects the 4579 resource parsing and construction, disassembly, and debug dump output. 4580 4581 Cleaned up and restructured the debug dump output for all resource 4582 descriptors. Improved readability of the output and reduced code size. 4583 4584 Fixed a problem where changes to internal data structures caused the 4585 optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 4586 4587 Code and Data Size: The current and previous library sizes for the core 4588 subsystem are shown below. These are the code and data sizes for the 4589 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4590 values do not include any ACPI driver or OSPM code. The debug version of the 4591 code includes the debug output trace mechanism and has a much larger code 4592 and data size. Note that these values will vary depending on the efficiency 4593 of the compiler and the compiler options used during generation. 4594 4595 Previous Release: 4596 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 4597 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 4598 Current Release: 4599 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 4600 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 4601 4602 4603 2) iASL Compiler/Disassembler: 4604 4605 Updated the disassembler to automatically insert an EndDependentFn() macro 4606 into the ASL stream if this macro is missing in the original AML code, 4607 simplifying compilation of the resulting ASL module. 4608 4609 Fixed a problem in the disassembler where a disassembled ResourceSource 4610 string (within a large resource descriptor) was not surrounded by quotes and 4611 not followed by a comma, causing errors when the resulting ASL module was 4612 compiled. Also, escape sequences within a ResourceSource string are now 4613 handled correctly (especially "\\") 4614 4615 ---------------------------------------- 4616 02 September 2005. Summary of changes for version 20050902: 4617 4618 1) ACPI CA Core Subsystem: 4619 4620 Fixed a problem with the internal Owner ID allocation and deallocation 4621 mechanisms for control method execution and recursive method invocation. 4622 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 4623 messages seen on some systems. Recursive method invocation depth is 4624 currently limited to 255. (Alexey Starikovskiy) 4625 4626 Completely eliminated all vestiges of support for the "module-level 4627 executable code" until this support is fully implemented and debugged. This 4628 should eliminate the NO_RETURN_VALUE exceptions seen during table load on 4629 some systems that invoke this support. 4630 4631 Fixed a problem within the resource manager code where the transaction flags 4632 for a 64-bit address descriptor were handled incorrectly in the type- 4633 specific flag byte. 4634 4635 Consolidated duplicate code within the address descriptor resource manager 4636 code, reducing overall subsystem code size. 4637 4638 Fixed a fault when using the AML debugger "disassemble" command to 4639 disassemble individual control methods. 4640 4641 Removed references to the "release_current" directory within the Unix 4642 release package. 4643 4644 Code and Data Size: The current and previous core subsystem library sizes 4645 are shown below. These are the code and data sizes for the acpica.lib 4646 produced by the Microsoft Visual C++ 6.0 compiler. These values do not 4647 include any ACPI driver or OSPM code. The debug version of the code includes 4648 the debug output trace mechanism and has a much larger code and data size. 4649 Note that these values will vary depending on the efficiency of the compiler 4650 and the compiler options used during generation. 4651 4652 Previous Release: 4653 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4654 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 4655 Current Release: 4656 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 4657 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 4658 4659 4660 2) iASL Compiler/Disassembler: 4661 4662 Implemented an error check for illegal duplicate values in the interrupt and 4663 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 4664 Interrupt(). 4665 4666 Implemented error checking for the Irq() and IrqNoFlags() macros to detect 4667 too many values in the interrupt list (16 max) and invalid values in the 4668 list (range 0 - 15) 4669 4670 The maximum length string literal within an ASL file is now restricted to 4671 200 characters as per the ACPI specification. 4672 4673 Fixed a fault when using the -ln option (generate namespace listing). 4674 4675 Implemented an error check to determine if a DescriptorName within a 4676 resource descriptor has already been used within the current scope. 4677 4678 ---------------------------------------- 4679 15 August 2005. Summary of changes for version 20050815: 4680 4681 1) ACPI CA Core Subsystem: 4682 4683 Implemented a full bytewise compare to determine if a table load request is 4684 attempting to load a duplicate table. The compare is performed if the table 4685 signatures and table lengths match. This will allow different tables with 4686 the same OEM Table ID and revision to be loaded - probably against the ACPI 4687 specification, but discovered in the field nonetheless. 4688 4689 Added the changes.txt logfile to each of the zipped release packages. 4690 4691 Code and Data Size: Current and previous core subsystem library sizes are 4692 shown below. These are the code and data sizes for the acpica.lib produced 4693 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4694 any ACPI driver or OSPM code. The debug version of the code includes the 4695 debug output trace mechanism and has a much larger code and data size. Note 4696 that these values will vary depending on the efficiency of the compiler and 4697 the compiler options used during generation. 4698 4699 Previous Release: 4700 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4701 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 4702 Current Release: 4703 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4704 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 4705 4706 4707 2) iASL Compiler/Disassembler: 4708 4709 Fixed a problem where incorrect AML code could be generated for Package 4710 objects if optimization is disabled (via the -oa switch). 4711 4712 Fixed a problem with where incorrect AML code is generated for variable- 4713 length packages when the package length is not specified and the number of 4714 initializer values is greater than 255. 4715 4716 4717 ---------------------------------------- 4718 29 July 2005. Summary of changes for version 20050729: 4719 4720 1) ACPI CA Core Subsystem: 4721 4722 Implemented support to ignore an attempt to install/load a particular ACPI 4723 table more than once. Apparently there exists BIOS code that repeatedly 4724 attempts to load the same SSDT upon certain events. With assistance from 4725 Venkatesh Pallipadi. 4726 4727 Restructured the main interface to the AML parser in order to correctly 4728 handle all exceptional conditions. This will prevent leakage of the OwnerId 4729 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some 4730 machines. With assistance from Alexey Starikovskiy. 4731 4732 Support for "module level code" has been disabled in this version due to a 4733 number of issues that have appeared on various machines. The support can be 4734 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 4735 compilation. When the issues are fully resolved, the code will be enabled by 4736 default again. 4737 4738 Modified the internal functions for debug print support to define the 4739 FunctionName parameter as a (const char *) for compatibility with compiler 4740 built-in macros such as __FUNCTION__, etc. 4741 4742 Linted the entire ACPICA source tree for both 32-bit and 64-bit. 4743 4744 Implemented support to display an object count summary for the AML Debugger 4745 commands Object and Methods. 4746 4747 Code and Data Size: Current and previous core subsystem library sizes are 4748 shown below. These are the code and data sizes for the acpica.lib produced 4749 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4750 any ACPI driver or OSPM code. The debug version of the code includes the 4751 debug output trace mechanism and has a much larger code and data size. Note 4752 that these values will vary depending on the efficiency of the compiler and 4753 the compiler options used during generation. 4754 4755 Previous Release: 4756 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 4757 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 4758 Current Release: 4759 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4760 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 4761 4762 4763 2) iASL Compiler/Disassembler: 4764 4765 Fixed a regression that appeared in the 20050708 version of the compiler 4766 where an error message was inadvertently emitted for invocations of the _OSI 4767 reserved control method. 4768 4769 ---------------------------------------- 4770 08 July 2005. Summary of changes for version 20050708: 4771 4772 1) ACPI CA Core Subsystem: 4773 4774 The use of the CPU stack in the debug version of the subsystem has been 4775 considerably reduced. Previously, a debug structure was declared in every 4776 function that used the debug macros. This structure has been removed in 4777 favor of declaring the individual elements as parameters to the debug 4778 functions. This reduces the cumulative stack use during nested execution of 4779 ACPI function calls at the cost of a small increase in the code size of the 4780 debug version of the subsystem. With assistance from Alexey Starikovskiy and 4781 Len Brown. 4782 4783 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 4784 headers to define a macro that will return the current function name at 4785 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by 4786 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 4787 compiler-dependent header, the function name is saved on the CPU stack (one 4788 pointer per function.) This mechanism is used because apparently there 4789 exists no standard ANSI-C defined macro that that returns the function name. 4790 4791 Redesigned and reimplemented the "Owner ID" mechanism used to track 4792 namespace objects created/deleted by ACPI tables and control method 4793 execution. A bitmap is now used to allocate and free the IDs, thus solving 4794 the wraparound problem present in the previous implementation. The size of 4795 the namespace node descriptor was reduced by 2 bytes as a result (Alexey 4796 Starikovskiy). 4797 4798 Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield 4799 flag definitions within the headers for the predefined ACPI tables. These 4800 have been replaced by UINT8_BIT in order to increase the code portability of 4801 the subsystem. If the use of UINT8 remains a problem, we may be forced to 4802 eliminate bitfields entirely because of a lack of portability. 4803 4804 Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This 4805 is a frequently used function and this improvement increases the performance 4806 of the entire subsystem (Alexey Starikovskiy). 4807 4808 Fixed several possible memory leaks and the inverse - premature object 4809 deletion (Alexey Starikovskiy). 4810 4811 Code and Data Size: Current and previous core subsystem library sizes are 4812 shown below. These are the code and data sizes for the acpica.lib produced 4813 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4814 any ACPI driver or OSPM code. The debug version of the code includes the 4815 debug output trace mechanism and has a much larger code and data size. Note 4816 that these values will vary depending on the efficiency of the compiler and 4817 the compiler options used during generation. 4818 4819 Previous Release: 4820 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 4821 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 4822 Current Release: 4823 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 4824 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 4825 4826 ---------------------------------------- 4827 24 June 2005. Summary of changes for version 20050624: 4828 4829 1) ACPI CA Core Subsystem: 4830 4831 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 4832 the host-defined cache object. This allows the OSL implementation to define 4833 and type this object in any manner desired, simplifying the OSL 4834 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 4835 Linux, and should be defined in the OS-specific header file for other 4836 operating systems as required. 4837 4838 Changed the interface to AcpiOsAcquireObject to directly return the 4839 requested object as the function return (instead of ACPI_STATUS.) This 4840 change was made for performance reasons, since this is the purpose of the 4841 interface in the first place. AcpiOsAcquireObject is now similar to the 4842 AcpiOsAllocate interface. 4843 4844 Implemented a new AML debugger command named Businfo. This command displays 4845 information about all devices that have an associate _PRT object. The _ADR, 4846 _HID, _UID, and _CID are displayed for these devices. 4847 4848 Modified the initialization sequence in AcpiInitializeSubsystem to call the 4849 OSL interface AcpiOslInitialize first, before any local initialization. This 4850 change was required because the global initialization now calls OSL 4851 interfaces. 4852 4853 Enhanced the Dump command to display the entire contents of Package objects 4854 (including all sub-objects and their values.) 4855 4856 Restructured the code base to split some files because of size and/or 4857 because the code logically belonged in a separate file. New files are listed 4858 below. All makefiles and project files included in the ACPI CA release have 4859 been updated. 4860 utilities/utcache.c /* Local cache interfaces */ 4861 utilities/utmutex.c /* Local mutex support */ 4862 utilities/utstate.c /* State object support */ 4863 interpreter/parser/psloop.c /* Main AML parse loop */ 4864 4865 Code and Data Size: Current and previous core subsystem library sizes are 4866 shown below. These are the code and data sizes for the acpica.lib produced 4867 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4868 any ACPI driver or OSPM code. The debug version of the code includes the 4869 debug output trace mechanism and has a much larger code and data size. Note 4870 that these values will vary depending on the efficiency of the compiler and 4871 the compiler options used during generation. 4872 4873 Previous Release: 4874 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 4875 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 4876 Current Release: 4877 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 4878 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 4879 4880 4881 2) iASL Compiler/Disassembler: 4882 4883 Fixed a regression introduced in version 20050513 where the use of a Package 4884 object within a Case() statement caused a compile time exception. The 4885 original behavior has been restored (a Match() operator is emitted.) 4886 4887 ---------------------------------------- 4888 17 June 2005. Summary of changes for version 20050617: 4889 4890 1) ACPI CA Core Subsystem: 4891 4892 Moved the object cache operations into the OS interface layer (OSL) to allow 4893 the host OS to handle these operations if desired (for example, the Linux 4894 OSL will invoke the slab allocator). This support is optional; the compile 4895 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache 4896 code in the ACPI CA core. The new OSL interfaces are shown below. See 4897 utalloc.c for an example implementation, and acpiosxf.h for the exact 4898 interface definitions. With assistance from Alexey Starikovskiy. 4899 AcpiOsCreateCache 4900 AcpiOsDeleteCache 4901 AcpiOsPurgeCache 4902 AcpiOsAcquireObject 4903 AcpiOsReleaseObject 4904 4905 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return 4906 and restore a flags parameter. This fits better with many OS lock models. 4907 Note: the current execution state (interrupt handler or not) is no longer 4908 passed to these interfaces. If necessary, the OSL must determine this state 4909 by itself, a simple and fast operation. With assistance from Alexey 4910 Starikovskiy. 4911 4912 Fixed a problem in the ACPI table handling where a valid XSDT was assumed 4913 present if the revision of the RSDP was 2 or greater. According to the ACPI 4914 specification, the XSDT is optional in all cases, and the table manager 4915 therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 4916 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain 4917 only the RSDT. 4918 4919 Fixed an interpreter problem with the Mid() operator in the case of an input 4920 string where the resulting output string is of zero length. It now correctly 4921 returns a valid, null terminated string object instead of a string object 4922 with a null pointer. 4923 4924 Fixed a problem with the control method argument handling to allow a store 4925 to an Arg object that already contains an object of type Device. The Device 4926 object is now correctly overwritten. Previously, an error was returned. 4927 4928 4929 Enhanced the debugger Find command to emit object values in addition to the 4930 found object pathnames. The output format is the same as the dump namespace 4931 command. 4932 4933 Enhanced the debugger Set command. It now has the ability to set the value 4934 of any Named integer object in the namespace (Previously, only method locals 4935 and args could be set.) 4936 4937 Code and Data Size: Current and previous core subsystem library sizes are 4938 shown below. These are the code and data sizes for the acpica.lib produced 4939 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4940 any ACPI driver or OSPM code. The debug version of the code includes the 4941 debug output trace mechanism and has a much larger code and data size. Note 4942 that these values will vary depending on the efficiency of the compiler and 4943 the compiler options used during generation. 4944 4945 Previous Release: 4946 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 4947 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 4948 Current Release: 4949 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 4950 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 4951 4952 4953 2) iASL Compiler/Disassembler: 4954 4955 Fixed a regression in the disassembler where if/else/while constructs were 4956 output incorrectly. This problem was introduced in the previous release 4957 (20050526). This problem also affected the single-step disassembly in the 4958 debugger. 4959 4960 Fixed a problem where compiling the reserved _OSI method would randomly (but 4961 rarely) produce compile errors. 4962 4963 Enhanced the disassembler to emit compilable code in the face of incorrect 4964 AML resource descriptors. If the optional ResourceSourceIndex is present, 4965 but the ResourceSource is not, do not emit the ResourceSourceIndex in the 4966 disassembly. Otherwise, the resulting code cannot be compiled without 4967 errors. 4968 4969 ---------------------------------------- 4970 26 May 2005. Summary of changes for version 20050526: 4971 4972 1) ACPI CA Core Subsystem: 4973 4974 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 4975 the module level (not within a control method.) These opcodes are executed 4976 exactly once at the time the table is loaded. This type of code was legal up 4977 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in 4978 order to provide backwards compatibility with earlier BIOS implementations. 4979 This eliminates the "Encountered executable code at module level" warning 4980 that was previously generated upon detection of such code. 4981 4982 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 4983 inadvertently be generated during the lookup of namespace objects in the 4984 second pass parse of ACPI tables and control methods. It appears that this 4985 problem could occur during the resolution of forward references to namespace 4986 objects. 4987 4988 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 4989 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 4990 allows the deadlock detection debug code to be compiled out in the normal 4991 case, improving mutex performance (and overall subsystem performance) 4992 considerably. 4993 4994 Implemented a handful of miscellaneous fixes for possible memory leaks on 4995 error conditions and error handling control paths. These fixes were 4996 suggested by FreeBSD and the Coverity Prevent source code analysis tool. 4997 4998 Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c) 4999 to prevent a fault in this error case. 5000 5001 Code and Data Size: Current and previous core subsystem library sizes are 5002 shown below. These are the code and data sizes for the acpica.lib produced 5003 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5004 any ACPI driver or OSPM code. The debug version of the code includes the 5005 debug output trace mechanism and has a much larger code and data size. Note 5006 that these values will vary depending on the efficiency of the compiler and 5007 the compiler options used during generation. 5008 5009 Previous Release: 5010 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5011 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5012 Current Release: 5013 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 5014 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 5015 5016 5017 2) iASL Compiler/Disassembler: 5018 5019 Implemented support to allow Type 1 and Type 2 ASL operators to appear at 5020 the module level (not within a control method.) These operators will be 5021 executed once at the time the table is loaded. This type of code was legal 5022 up until the release of ACPI 2.0B (2002) and is now supported by the iASL 5023 compiler in order to provide backwards compatibility with earlier BIOS ASL 5024 code. 5025 5026 The ACPI integer width (specified via the table revision ID or the -r 5027 override, 32 or 64 bits) is now used internally during compile-time constant 5028 folding to ensure that constants are truncated to 32 bits if necessary. 5029 Previously, the revision ID value was only emitted in the AML table header. 5030 5031 An error message is now generated for the Mutex and Method operators if the 5032 SyncLevel parameter is outside the legal range of 0 through 15. 5033 5034 Fixed a problem with the Method operator ParameterTypes list handling (ACPI 5035 3.0). Previously, more than 2 types or 2 arguments generated a syntax error. 5036 The actual underlying implementation of method argument typechecking is 5037 still under development, however. 5038 5039 ---------------------------------------- 5040 13 May 2005. Summary of changes for version 20050513: 5041 5042 1) ACPI CA Core Subsystem: 5043 5044 Implemented support for PCI Express root bridges -- added support for device 5045 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 5046 5047 The interpreter now automatically truncates incoming 64-bit constants to 32 5048 bits if currently executing out of a 32-bit ACPI table (Revision < 2). This 5049 also affects the iASL compiler constant folding. (Note: as per below, the 5050 iASL compiler no longer allows 64-bit constants within 32-bit tables.) 5051 5052 Fixed a problem where string and buffer objects with "static" pointers 5053 (pointers to initialization data within an ACPI table) were not handled 5054 consistently. The internal object copy operation now always copies the data 5055 to a newly allocated buffer, regardless of whether the source object is 5056 static or not. 5057 5058 Fixed a problem with the FromBCD operator where an implicit result 5059 conversion was improperly performed while storing the result to the target 5060 operand. Since this is an "explicit conversion" operator, the implicit 5061 conversion should never be performed on the output. 5062 5063 Fixed a problem with the CopyObject operator where a copy to an existing 5064 named object did not always completely overwrite the existing object stored 5065 at name. Specifically, a buffer-to-buffer copy did not delete the existing 5066 buffer. 5067 5068 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and 5069 structs for consistency. 5070 5071 Code and Data Size: Current and previous core subsystem library sizes are 5072 shown below. These are the code and data sizes for the acpica.lib produced 5073 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5074 any ACPI driver or OSPM code. The debug version of the code includes the 5075 debug output trace mechanism and has a much larger code and data size. Note 5076 that these values will vary depending on the efficiency of the compiler and 5077 the compiler options used during generation. 5078 5079 Previous Release: 5080 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5081 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5082 Current Release: (Same sizes) 5083 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5084 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5085 5086 5087 2) iASL Compiler/Disassembler: 5088 5089 The compiler now emits a warning if an attempt is made to generate a 64-bit 5090 integer constant from within a 32-bit ACPI table (Revision < 2). The integer 5091 is truncated to 32 bits. 5092 5093 Fixed a problem with large package objects: if the static length of the 5094 package is greater than 255, the "variable length package" opcode is 5095 emitted. Previously, this caused an error. This requires an update to the 5096 ACPI spec, since it currently (incorrectly) states that packages larger than 5097 255 elements are not allowed. 5098 5099 The disassembler now correctly handles variable length packages and packages 5100 larger than 255 elements. 5101 5102 ---------------------------------------- 5103 08 April 2005. Summary of changes for version 20050408: 5104 5105 1) ACPI CA Core Subsystem: 5106 5107 Fixed three cases in the interpreter where an "index" argument to an ASL 5108 function was still (internally) 32 bits instead of the required 64 bits. 5109 This was the Index argument to the Index, Mid, and Match operators. 5110 5111 The "strupr" function is now permanently local (AcpiUtStrupr), since this is 5112 not a POSIX-defined function and not present in most kernel-level C 5113 libraries. All references to the C library strupr function have been removed 5114 from the headers. 5115 5116 Completed the deployment of static functions/prototypes. All prototypes with 5117 the static attribute have been moved from the headers to the owning C file. 5118 5119 Implemented an extract option (-e) for the AcpiBin utility (AML binary 5120 utility). This option allows the utility to extract individual ACPI tables 5121 from the output of AcpiDmp. It provides the same functionality of the 5122 acpixtract.pl perl script without the worry of setting the correct perl 5123 options. AcpiBin runs on Windows and has not yet been generated/validated in 5124 the Linux/Unix environment (but should be soon). 5125 5126 Updated and fixed the table dump option for AcpiBin (-d). This option 5127 converts a single ACPI table to a hex/ascii file, similar to the output of 5128 AcpiDmp. 5129 5130 Code and Data Size: Current and previous core subsystem library sizes are 5131 shown below. These are the code and data sizes for the acpica.lib produced 5132 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5133 any ACPI driver or OSPM code. The debug version of the code includes the 5134 debug output trace mechanism and has a much larger code and data size. Note 5135 that these values will vary depending on the efficiency of the compiler and 5136 the compiler options used during generation. 5137 5138 Previous Release: 5139 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 5140 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 5141 Current Release: 5142 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5143 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5144 5145 5146 2) iASL Compiler/Disassembler: 5147 5148 Disassembler fix: Added a check to ensure that the table length found in the 5149 ACPI table header within the input file is not longer than the actual input 5150 file size. This indicates some kind of file or table corruption. 5151 5152 ---------------------------------------- 5153 29 March 2005. Summary of changes for version 20050329: 5154 5155 1) ACPI CA Core Subsystem: 5156 5157 An error is now generated if an attempt is made to create a Buffer Field of 5158 length zero (A CreateField with a length operand of zero.) 5159 5160 The interpreter now issues a warning whenever executable code at the module 5161 level is detected during ACPI table load. This will give some idea of the 5162 prevalence of this type of code. 5163 5164 Implemented support for references to named objects (other than control 5165 methods) within package objects. 5166 5167 Enhanced package object output for the debug object. Package objects are now 5168 completely dumped, showing all elements. 5169 5170 Enhanced miscellaneous object output for the debug object. Any object can 5171 now be written to the debug object (for example, a device object can be 5172 written, and the type of the object will be displayed.) 5173 5174 The "static" qualifier has been added to all local functions across both the 5175 core subsystem and the iASL compiler. 5176 5177 The number of "long" lines (> 80 chars) within the source has been 5178 significantly reduced, by about 1/3. 5179 5180 Cleaned up all header files to ensure that all CA/iASL functions are 5181 prototyped (even static functions) and the formatting is consistent. 5182 5183 Two new header files have been added, acopcode.h and acnames.h. 5184 5185 Removed several obsolete functions that were no longer used. 5186 5187 Code and Data Size: Current and previous core subsystem library sizes are 5188 shown below. These are the code and data sizes for the acpica.lib produced 5189 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5190 any ACPI driver or OSPM code. The debug version of the code includes the 5191 debug output trace mechanism and has a much larger code and data size. Note 5192 that these values will vary depending on the efficiency of the compiler and 5193 the compiler options used during generation. 5194 5195 Previous Release: 5196 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5197 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 5198 Current Release: 5199 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 5200 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 5201 5202 5203 5204 2) iASL Compiler/Disassembler: 5205 5206 Fixed a problem with the resource descriptor generation/support. For the 5207 ResourceSourceIndex and the ResourceSource fields, both must be present, or 5208 both must be not present - can't have one without the other. 5209 5210 The compiler now returns non-zero from the main procedure if any errors have 5211 occurred during the compilation. 5212 5213 5214 ---------------------------------------- 5215 09 March 2005. Summary of changes for version 20050309: 5216 5217 1) ACPI CA Core Subsystem: 5218 5219 The string-to-buffer implicit conversion code has been modified again after 5220 a change to the ACPI specification. In order to match the behavior of the 5221 other major ACPI implementation, the target buffer is no longer truncated if 5222 the source string is smaller than an existing target buffer. This change 5223 requires an update to the ACPI spec, and should eliminate the recent 5224 AE_AML_BUFFER_LIMIT issues. 5225 5226 The "implicit return" support was rewritten to a new algorithm that solves 5227 the general case. Rather than attempt to determine when a method is about to 5228 exit, the result of every ASL operator is saved momentarily until the very 5229 next ASL operator is executed. Therefore, no matter how the method exits, 5230 there will always be a saved implicit return value. This feature is only 5231 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate 5232 AE_AML_NO_RETURN_VALUE errors when enabled. 5233 5234 Implemented implicit conversion support for the predicate (operand) of the 5235 If, Else, and While operators. String and Buffer arguments are automatically 5236 converted to Integers. 5237 5238 Changed the string-to-integer conversion behavior to match the new ACPI 5239 errata: "If no integer object exists, a new integer is created. The ASCII 5240 string is interpreted as a hexadecimal constant. Each string character is 5241 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 5242 with the first character as the most significant digit, and ending with the 5243 first non-hexadecimal character or end-of-string." This means that the first 5244 non-hex character terminates the conversion and this is the code that was 5245 changed. 5246 5247 Fixed a problem where the ObjectType operator would fail (fault) when used 5248 on an Index of a Package which pointed to a null package element. The 5249 operator now properly returns zero (Uninitialized) in this case. 5250 5251 Fixed a problem where the While operator used excessive memory by not 5252 properly popping the result stack during execution. There was no memory leak 5253 after execution, however. (Code provided by Valery Podrezov.) 5254 5255 Fixed a problem where references to control methods within Package objects 5256 caused the method to be invoked, instead of producing a reference object 5257 pointing to the method. 5258 5259 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to 5260 improve performance and reduce code size. (Code provided by Alexey 5261 Starikovskiy.) 5262 5263 Code and Data Size: Current and previous core subsystem library sizes are 5264 shown below. These are the code and data sizes for the acpica.lib produced 5265 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5266 any ACPI driver or OSPM code. The debug version of the code includes the 5267 debug output trace mechanism and has a much larger code and data size. Note 5268 that these values will vary depending on the efficiency of the compiler and 5269 the compiler options used during generation. 5270 5271 Previous Release: 5272 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5273 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 5274 Current Release: 5275 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5276 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 5277 5278 5279 2) iASL Compiler/Disassembler: 5280 5281 Fixed a problem with the Return operator with no arguments. Since the AML 5282 grammar for the byte encoding requires an operand for the Return opcode, the 5283 compiler now emits a Return(Zero) for this case. An ACPI specification 5284 update has been written for this case. 5285 5286 For tables other than the DSDT, namepath optimization is automatically 5287 disabled. This is because SSDTs can be loaded anywhere in the namespace, the 5288 compiler has no knowledge of where, and thus cannot optimize namepaths. 5289 5290 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 5291 inadvertently omitted from the ACPI specification, and will require an 5292 update to the spec. 5293 5294 The source file scan for ASCII characters is now optional (-a). This change 5295 was made because some vendors place non-ascii characters within comments. 5296 However, the scan is simply a brute-force byte compare to ensure all 5297 characters in the file are in the range 0x00 to 0x7F. 5298 5299 Fixed a problem with the CondRefOf operator where the compiler was 5300 inappropriately checking for the existence of the target. Since the point of 5301 the operator is to check for the existence of the target at run-time, the 5302 compiler no longer checks for the target existence. 5303 5304 Fixed a problem where errors generated from the internal AML interpreter 5305 during constant folding were not handled properly, causing a fault. 5306 5307 Fixed a problem with overly aggressive range checking for the Stall 5308 operator. The valid range (max 255) is now only checked if the operand is of 5309 type Integer. All other operand types cannot be statically checked. 5310 5311 Fixed a problem where control method references within the RefOf, DeRefOf, 5312 and ObjectType operators were not treated properly. They are now treated as 5313 actual references, not method invocations. 5314 5315 Fixed and enhanced the "list namespace" option (-ln). This option was broken 5316 a number of releases ago. 5317 5318 Improved error handling for the Field, IndexField, and BankField operators. 5319 The compiler now cleanly reports and recovers from errors in the field 5320 component (FieldUnit) list. 5321 5322 Fixed a disassembler problem where the optional ResourceDescriptor fields 5323 TRS and TTP were not always handled correctly. 5324 5325 Disassembler - Comments in output now use "//" instead of "/*" 5326 5327 ---------------------------------------- 5328 28 February 2005. Summary of changes for version 20050228: 5329 5330 1) ACPI CA Core Subsystem: 5331 5332 Fixed a problem where the result of an Index() operator (an object 5333 reference) must increment the reference count on the target object for the 5334 life of the object reference. 5335 5336 Implemented AML Interpreter and Debugger support for the new ACPI 3.0 5337 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace 5338 resource descriptors. 5339 5340 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 5341 Space Descriptor" string, indicating interpreter support for the descriptors 5342 above. 5343 5344 Implemented header support for the new ACPI 3.0 FADT flag bits. 5345 5346 Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1 5347 status/enable registers. 5348 5349 Updated header support for the MADT processor local Apic struct and MADT 5350 platform interrupt source struct for new ACPI 3.0 fields. 5351 5352 Implemented header support for the SRAT and SLIT ACPI tables. 5353 5354 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag 5355 at runtime. 5356 5357 Code and Data Size: Current and previous core subsystem library sizes are 5358 shown below. These are the code and data sizes for the acpica.lib produced 5359 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5360 any ACPI driver or OSPM code. The debug version of the code includes the 5361 debug output trace mechanism and has a much larger code and data size. Note 5362 that these values will vary depending on the efficiency of the compiler and 5363 the compiler options used during generation. 5364 5365 Previous Release: 5366 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 5367 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 5368 Current Release: 5369 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5370 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 5371 5372 5373 2) iASL Compiler/Disassembler: 5374 5375 Fixed a problem with the internal 64-bit String-to-integer conversion with 5376 strings less than two characters long. 5377 5378 Fixed a problem with constant folding where the result of the Index() 5379 operator can not be considered a constant. This means that Index() cannot be 5380 a type3 opcode and this will require an update to the ACPI specification. 5381 5382 Disassembler: Implemented support for the TTP, MTP, and TRS resource 5383 descriptor fields. These fields were inadvertently ignored and not output in 5384 the disassembly of the resource descriptor. 5385 5386 5387 ---------------------------------------- 5388 11 February 2005. Summary of changes for version 20050211: 5389 5390 1) ACPI CA Core Subsystem: 5391 5392 Implemented ACPI 3.0 support for implicit conversion within the Match() 5393 operator. MatchObjects can now be of type integer, buffer, or string instead 5394 of just type integer. Package elements are implicitly converted to the type 5395 of the MatchObject. This change aligns the behavior of Match() with the 5396 behavior of the other logical operators (LLess(), etc.) It also requires an 5397 errata change to the ACPI specification as this support was intended for 5398 ACPI 3.0, but was inadvertently omitted. 5399 5400 Fixed a problem with the internal implicit "to buffer" conversion. Strings 5401 that are converted to buffers will cause buffer truncation if the string is 5402 smaller than the target buffer. Integers that are converted to buffers will 5403 not cause buffer truncation, only zero extension (both as per the ACPI 5404 spec.) The problem was introduced when code was added to truncate the 5405 buffer, but this should not be performed in all cases, only the string case. 5406 5407 Fixed a problem with the Buffer and Package operators where the interpreter 5408 would get confused if two such operators were used as operands to an ASL 5409 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 5410 stack was not being popped after the execution of these operators, resulting 5411 in an AE_NO_RETURN_VALUE exception. 5412 5413 Fixed a problem with constructs of the form Store(Index(...),...). The 5414 reference object returned from Index was inadvertently resolved to an actual 5415 value. This problem was introduced in version 20050114 when the behavior of 5416 Store() was modified to restrict the object types that can be used as the 5417 source operand (to match the ACPI specification.) 5418 5419 Reduced excessive stack use within the AcpiGetObjectInfo procedure. 5420 5421 Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 5422 5423 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 5424 5425 Code and Data Size: Current and previous core subsystem library sizes are 5426 shown below. These are the code and data sizes for the acpica.lib produced 5427 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5428 any ACPI driver or OSPM code. The debug version of the code includes the 5429 debug output trace mechanism and has a much larger code and data size. Note 5430 that these values will vary depending on the efficiency of the compiler and 5431 the compiler options used during generation. 5432 5433 Previous Release: 5434 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 5435 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 5436 Current Release: 5437 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 5438 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 5439 5440 5441 2) iASL Compiler/Disassembler: 5442 5443 Fixed a code generation problem in the constant folding optimization code 5444 where incorrect code was generated if a constant was reduced to a buffer 5445 object (i.e., a reduced type 5 opcode.) 5446 5447 Fixed a typechecking problem for the ToBuffer operator. Caused by an 5448 incorrect return type in the internal opcode information table. 5449 5450 ---------------------------------------- 5451 25 January 2005. Summary of changes for version 20050125: 5452 5453 1) ACPI CA Core Subsystem: 5454 5455 Fixed a recently introduced problem with the Global Lock where the 5456 underlying semaphore was not created. This problem was introduced in 5457 version 20050114, and caused an AE_AML_NO_OPERAND exception during an 5458 Acquire() operation on _GL. 5459 5460 The local object cache is now optional, and is disabled by default. Both 5461 AcpiExec and the iASL compiler enable the cache because they run in user 5462 mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE 5463 to enable the local cache. 5464 5465 Fixed an issue in the internal function AcpiUtEvaluateObject concerning the 5466 optional "implicit return" support where an error was returned if no return 5467 object was expected, but one was implicitly returned. AE_OK is now returned 5468 in this case and the implicitly returned object is deleted. 5469 AcpiUtEvaluateObject is only occasionally used, and only to execute reserved 5470 methods such as _STA and _INI where the return type is known up front. 5471 5472 Fixed a few issues with the internal convert-to-integer code. It now returns 5473 an error if an attempt is made to convert a null string, a string of only 5474 blanks/tabs, or a zero-length buffer. This affects both implicit conversion 5475 and explicit conversion via the ToInteger() operator. 5476 5477 The internal debug code in AcpiUtAcquireMutex has been commented out. It is 5478 not needed for normal operation and should increase the performance of the 5479 entire subsystem. The code remains in case it is needed for debug purposes 5480 again. 5481 5482 The AcpiExec source and makefile are included in the Unix/Linux package for 5483 the first time. 5484 5485 Code and Data Size: Current and previous core subsystem library sizes are 5486 shown below. These are the code and data sizes for the acpica.lib produced 5487 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5488 any ACPI driver or OSPM code. The debug version of the code includes the 5489 debug output trace mechanism and has a much larger code and data size. Note 5490 that these values will vary depending on the efficiency of the compiler and 5491 the compiler options used during generation. 5492 5493 Previous Release: 5494 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 5495 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 5496 Current Release: 5497 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 5498 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 5499 5500 2) iASL Compiler/Disassembler: 5501 5502 Switch/Case support: A warning is now issued if the type of the Switch value 5503 cannot be determined at compile time. For example, Switch(Arg0) will 5504 generate the warning, and the type is assumed to be an integer. As per the 5505 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the 5506 warning. 5507 5508 Switch/Case support: Implemented support for buffer and string objects as 5509 the switch value. This is an ACPI 3.0 feature, now that LEqual supports 5510 buffers and strings. 5511 5512 Switch/Case support: The emitted code for the LEqual() comparisons now uses 5513 the switch value as the first operand, not the second. The case value is now 5514 the second operand, and this allows the case value to be implicitly 5515 converted to the type of the switch value, not the other way around. 5516 5517 Switch/Case support: Temporary variables are now emitted immediately within 5518 the control method, not at the global level. This means that there are now 5519 36 temps available per-method, not 36 temps per-module as was the case with 5520 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 5521 5522 ---------------------------------------- 5523 14 January 2005. Summary of changes for version 20050114: 5524 5525 Added 2005 copyright to all module headers. This affects every module in 5526 the core subsystem, iASL compiler, and the utilities. 5527 5528 1) ACPI CA Core Subsystem: 5529 5530 Fixed an issue with the String-to-Buffer conversion code where the string 5531 null terminator was not included in the buffer after conversion, but there 5532 is existing ASL that assumes the string null terminator is included. This is 5533 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 5534 introduced in the previous version when the code was updated to correctly 5535 set the converted buffer size as per the ACPI specification. The ACPI spec 5536 is ambiguous and will be updated to specify that the null terminator must be 5537 included in the converted buffer. This also affects the ToBuffer() ASL 5538 operator. 5539 5540 Fixed a problem with the Mid() ASL/AML operator where it did not work 5541 correctly on Buffer objects. Newly created sub-buffers were not being marked 5542 as initialized. 5543 5544 5545 Fixed a problem in AcpiTbFindTable where incorrect string compares were 5546 performed on the OemId and OemTableId table header fields. These fields are 5547 not null terminated, so strncmp is now used instead of strcmp. 5548 5549 Implemented a restriction on the Store() ASL/AML operator to align the 5550 behavior with the ACPI specification. Previously, any object could be used 5551 as the source operand. Now, the only objects that may be used are Integers, 5552 Buffers, Strings, Packages, Object References, and DDB Handles. If 5553 necessary, the original behavior can be restored by enabling the 5554 EnableInterpreterSlack flag. 5555 5556 Enhanced the optional "implicit return" support to allow an implicit return 5557 value from methods that are invoked externally via the AcpiEvaluateObject 5558 interface. This enables implicit returns from the _STA and _INI methods, 5559 for example. 5560 5561 Changed the Revision() ASL/AML operator to return the current version of the 5562 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned 5563 the supported ACPI version (This is the function of the _REV method). 5564 5565 Updated the _REV predefined method to return the currently supported version 5566 of ACPI, now 3. 5567 5568 Implemented batch mode option for the AcpiExec utility (-b). 5569 5570 Code and Data Size: Current and previous core subsystem library sizes are 5571 shown below. These are the code and data sizes for the acpica.lib produced 5572 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5573 any ACPI driver or OSPM code. The debug version of the code includes the 5574 debug output trace mechanism and has a much larger code and data size. Note 5575 that these values will vary depending on the efficiency of the compiler and 5576 the compiler options used during generation. 5577 5578 Previous Release: 5579 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5580 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 5581 Current Release: 5582 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 5583 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 5584 5585 ---------------------------------------- 5586 10 December 2004. Summary of changes for version 20041210: 5587 5588 ACPI 3.0 support is nearing completion in both the iASL compiler and the 5589 ACPI CA core subsystem. 5590 5591 1) ACPI CA Core Subsystem: 5592 5593 Fixed a problem in the ToDecimalString operator where the resulting string 5594 length was incorrectly calculated. The length is now calculated exactly, 5595 eliminating incorrect AE_STRING_LIMIT exceptions. 5596 5597 Fixed a problem in the ToHexString operator to allow a maximum 200 character 5598 string to be produced. 5599 5600 Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy 5601 routine where the length of the resulting buffer was not truncated to the 5602 new size (if the target buffer already existed). 5603 5604 Code and Data Size: Current and previous core subsystem library sizes are 5605 shown below. These are the code and data sizes for the acpica.lib produced 5606 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5607 any ACPI driver or OSPM code. The debug version of the code includes the 5608 debug output trace mechanism and has a much larger code and data size. Note 5609 that these values will vary depending on the efficiency of the compiler and 5610 the compiler options used during generation. 5611 5612 Previous Release: 5613 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5614 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 5615 Current Release: 5616 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5617 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 5618 5619 5620 2) iASL Compiler/Disassembler: 5621 5622 Implemented the new ACPI 3.0 resource template macros - DWordSpace, 5623 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 5624 Includes support in the disassembler. 5625 5626 Implemented support for the new (ACPI 3.0) parameter to the Register macro, 5627 AccessSize. 5628 5629 Fixed a problem where the _HE resource name for the Interrupt macro was 5630 referencing bit 0 instead of bit 1. 5631 5632 Implemented check for maximum 255 interrupts in the Interrupt macro. 5633 5634 Fixed a problem with the predefined resource descriptor names where 5635 incorrect AML code was generated if the offset within the resource buffer 5636 was 0 or 1. The optimizer shortened the AML code to a single byte opcode 5637 but did not update the surrounding package lengths. 5638 5639 Changes to the Dma macro: All channels within the channel list must be in 5640 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 5641 optional (default is BusMaster). 5642 5643 Implemented check for maximum 7 data bytes for the VendorShort macro. 5644 5645 The ReadWrite parameter is now optional for the Memory32 and similar macros. 5646 5647 ---------------------------------------- 5648 03 December 2004. Summary of changes for version 20041203: 5649 5650 1) ACPI CA Core Subsystem: 5651 5652 The low-level field insertion/extraction code (exfldio) has been completely 5653 rewritten to eliminate unnecessary complexity, bugs, and boundary 5654 conditions. 5655 5656 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString 5657 operators where the input operand could be inadvertently deleted if no 5658 conversion was necessary (e.g., if the input to ToInteger was an Integer 5659 object.) 5660 5661 Fixed a problem with the ToDecimalString and ToHexString where an incorrect 5662 exception code was returned if the resulting string would be > 200 chars. 5663 AE_STRING_LIMIT is now returned. 5664 5665 Fixed a problem with the Concatenate operator where AE_OK was always 5666 returned, even if the operation failed. 5667 5668 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 5669 semaphores to be allocated. 5670 5671 Code and Data Size: Current and previous core subsystem library sizes are 5672 shown below. These are the code and data sizes for the acpica.lib produced 5673 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5674 any ACPI driver or OSPM code. The debug version of the code includes the 5675 debug output trace mechanism and has a much larger code and data size. Note 5676 that these values will vary depending on the efficiency of the compiler and 5677 the compiler options used during generation. 5678 5679 Previous Release: 5680 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5681 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5682 Current Release: 5683 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5684 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 5685 5686 5687 2) iASL Compiler/Disassembler: 5688 5689 Fixed typechecking for the ObjectType and SizeOf operators. Problem was 5690 recently introduced in 20041119. 5691 5692 Fixed a problem with the ToUUID macro where the upper nybble of each buffer 5693 byte was inadvertently set to zero. 5694 5695 ---------------------------------------- 5696 19 November 2004. Summary of changes for version 20041119: 5697 5698 1) ACPI CA Core Subsystem: 5699 5700 Fixed a problem in the internal ConvertToInteger routine where new integers 5701 were not truncated to 32 bits for 32-bit ACPI tables. This routine converts 5702 buffers and strings to integers. 5703 5704 Implemented support to store a value to an Index() on a String object. This 5705 is an ACPI 2.0 feature that had not yet been implemented. 5706 5707 Implemented new behavior for storing objects to individual package elements 5708 (via the Index() operator). The previous behavior was to invoke the implicit 5709 conversion rules if an object was already present at the index. The new 5710 behavior is to simply delete any existing object and directly store the new 5711 object. Although the ACPI specification seems unclear on this subject, other 5712 ACPI implementations behave in this manner. (This is the root of the 5713 AE_BAD_HEX_CONSTANT issue.) 5714 5715 Modified the RSDP memory scan mechanism to support the extended checksum for 5716 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 5717 RSDP signature is found with a valid checksum. 5718 5719 Code and Data Size: Current and previous core subsystem library sizes are 5720 shown below. These are the code and data sizes for the acpica.lib produced 5721 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5722 any ACPI driver or OSPM code. The debug version of the code includes the 5723 debug output trace mechanism and has a much larger code and data size. Note 5724 that these values will vary depending on the efficiency of the compiler and 5725 the compiler options used during generation. 5726 5727 Previous Release: 5728 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5729 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5730 Current Release: 5731 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5732 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5733 5734 5735 2) iASL Compiler/Disassembler: 5736 5737 Fixed a missing semicolon in the aslcompiler.y file. 5738 5739 ---------------------------------------- 5740 05 November 2004. Summary of changes for version 20041105: 5741 5742 1) ACPI CA Core Subsystem: 5743 5744 Implemented support for FADT revision 2. This was an interim table (between 5745 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 5746 5747 Implemented optional support to allow uninitialized LocalX and ArgX 5748 variables in a control method. The variables are initialized to an Integer 5749 object with a value of zero. This support is enabled by setting the 5750 AcpiGbl_EnableInterpreterSlack flag to TRUE. 5751 5752 Implemented support for Integer objects for the SizeOf operator. Either 4 5753 or 8 is returned, depending on the current integer size (32-bit or 64-bit, 5754 depending on the parent table revision). 5755 5756 Fixed a problem in the implementation of the SizeOf and ObjectType operators 5757 where the operand was resolved to a value too early, causing incorrect 5758 return values for some objects. 5759 5760 Fixed some possible memory leaks during exceptional conditions. 5761 5762 Code and Data Size: Current and previous core subsystem library sizes are 5763 shown below. These are the code and data sizes for the acpica.lib produced 5764 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5765 any ACPI driver or OSPM code. The debug version of the code includes the 5766 debug output trace mechanism and has a much larger code and data size. Note 5767 that these values will vary depending on the efficiency of the compiler and 5768 the compiler options used during generation. 5769 5770 Previous Release: 5771 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5772 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 5773 Current Release: 5774 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5775 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5776 5777 5778 2) iASL Compiler/Disassembler: 5779 5780 Implemented support for all ACPI 3.0 reserved names and methods. 5781 5782 Implemented all ACPI 3.0 grammar elements in the front-end, including 5783 support for semicolons. 5784 5785 Implemented the ACPI 3.0 Function() and ToUUID() macros 5786 5787 Fixed a problem in the disassembler where a Scope() operator would not be 5788 emitted properly if the target of the scope was in another table. 5789 5790 ---------------------------------------- 5791 15 October 2004. Summary of changes for version 20041015: 5792 5793 Note: ACPI CA is currently undergoing an in-depth and complete formal 5794 evaluation to test/verify the following areas. Other suggestions are 5795 welcome. This will result in an increase in the frequency of releases and 5796 the number of bug fixes in the next few months. 5797 - Functional tests for all ASL/AML operators 5798 - All implicit/explicit type conversions 5799 - Bit fields and operation regions 5800 - 64-bit math support and 32-bit-only "truncated" math support 5801 - Exceptional conditions, both compiler and interpreter 5802 - Dynamic object deletion and memory leaks 5803 - ACPI 3.0 support when implemented 5804 - External interfaces to the ACPI subsystem 5805 5806 5807 1) ACPI CA Core Subsystem: 5808 5809 Fixed two alignment issues on 64-bit platforms - within debug statements in 5810 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address 5811 field within the non-aligned ACPI generic address structure. 5812 5813 Fixed a problem in the Increment and Decrement operators where incorrect 5814 operand resolution could result in the inadvertent modification of the 5815 original integer when the integer is passed into another method as an 5816 argument and the arg is then incremented/decremented. 5817 5818 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit 5819 BCD number were truncated during conversion. 5820 5821 Fixed a problem in the ToDecimal operator where the length of the resulting 5822 string could be set incorrectly too long if the input operand was a Buffer 5823 object. 5824 5825 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0) 5826 within a buffer would prematurely terminate a compare between buffer 5827 objects. 5828 5829 Added a check for string overflow (>200 characters as per the ACPI 5830 specification) during the Concatenate operator with two string operands. 5831 5832 Code and Data Size: Current and previous core subsystem library sizes are 5833 shown below. These are the code and data sizes for the acpica.lib produced 5834 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5835 any ACPI driver or OSPM code. The debug version of the code includes the 5836 debug output trace mechanism and has a much larger code and data size. Note 5837 that these values will vary depending on the efficiency of the compiler and 5838 the compiler options used during generation. 5839 5840 Previous Release: 5841 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5842 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 5843 Current Release: 5844 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5845 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 5846 5847 5848 5849 2) iASL Compiler/Disassembler: 5850 5851 Allow the use of the ObjectType operator on uninitialized Locals and Args 5852 (returns 0 as per the ACPI specification). 5853 5854 Fixed a problem where the compiler would fault if there was a syntax error 5855 in the FieldName of all of the various CreateXXXField operators. 5856 5857 Disallow the use of lower case letters within the EISAID macro, as per the 5858 ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where 5859 U is an uppercase letter and N is a hex digit. 5860 5861 5862 ---------------------------------------- 5863 06 October 2004. Summary of changes for version 20041006: 5864 5865 1) ACPI CA Core Subsystem: 5866 5867 Implemented support for the ACPI 3.0 Timer operator. This ASL function 5868 implements a 64-bit timer with 100 nanosecond granularity. 5869 5870 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 5871 implement the ACPI 3.0 Timer operator. This allows the host OS to implement 5872 the timer with the best clock available. Also, it keeps the core subsystem 5873 out of the clock handling business, since the host OS (usually) performs 5874 this function. 5875 5876 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 5877 functions use a 64-bit address which is part of the packed ACPI Generic 5878 Address Structure. Since the structure is non-aligned, the alignment macros 5879 are now used to extract the address to a local variable before use. 5880 5881 Fixed a problem where the ToInteger operator assumed all input strings were 5882 hexadecimal. The operator now handles both decimal strings and hex strings 5883 (prefixed with "0x"). 5884 5885 Fixed a problem where the string length in the string object created as a 5886 result of the internal ConvertToString procedure could be incorrect. This 5887 potentially affected all implicit conversions and also the ToDecimalString 5888 and ToHexString operators. 5889 5890 Fixed two problems in the ToString operator. If the length parameter was 5891 zero, an incorrect string object was created and the value of the input 5892 length parameter was inadvertently changed from zero to Ones. 5893 5894 Fixed a problem where the optional ResourceSource string in the ExtendedIRQ 5895 resource macro was ignored. 5896 5897 Simplified the interfaces to the internal division functions, reducing code 5898 size and complexity. 5899 5900 Code and Data Size: Current and previous core subsystem library sizes are 5901 shown below. These are the code and data sizes for the acpica.lib produced 5902 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5903 any ACPI driver or OSPM code. The debug version of the code includes the 5904 debug output trace mechanism and has a much larger code and data size. Note 5905 that these values will vary depending on the efficiency of the compiler and 5906 the compiler options used during generation. 5907 5908 Previous Release: 5909 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 5910 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 5911 Current Release: 5912 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5913 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 5914 5915 5916 2) iASL Compiler/Disassembler: 5917 5918 Implemented support for the ACPI 3.0 Timer operator. 5919 5920 Fixed a problem where the Default() operator was inadvertently ignored in a 5921 Switch/Case block. This was a problem in the translation of the Switch 5922 statement to If...Else pairs. 5923 5924 Added support to allow a standalone Return operator, with no parentheses (or 5925 operands). 5926 5927 Fixed a problem with code generation for the ElseIf operator where the 5928 translated Else...If parse tree was improperly constructed leading to the 5929 loss of some code. 5930 5931 ---------------------------------------- 5932 22 September 2004. Summary of changes for version 20040922: 5933 5934 1) ACPI CA Core Subsystem: 5935 5936 Fixed a problem with the implementation of the LNot() operator where "Ones" 5937 was not returned for the TRUE case. Changed the code to return Ones instead 5938 of (!Arg) which was usually 1. This change affects iASL constant folding for 5939 this operator also. 5940 5941 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not 5942 initialized properly -- Now zero the entire buffer in this case where the 5943 buffer already exists. 5944 5945 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 5946 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 5947 related code considerably. This will require changes/updates to all OS 5948 interface layers (OSLs.) 5949 5950 Implemented a new external interface, AcpiInstallExceptionHandler, to allow 5951 a system exception handler to be installed. This handler is invoked upon any 5952 run-time exception that occurs during control method execution. 5953 5954 Added support for the DSDT in AcpiTbFindTable. This allows the 5955 DataTableRegion() operator to access the local copy of the DSDT. 5956 5957 Code and Data Size: Current and previous core subsystem library sizes are 5958 shown below. These are the code and data sizes for the acpica.lib produced 5959 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5960 any ACPI driver or OSPM code. The debug version of the code includes the 5961 debug output trace mechanism and has a much larger code and data size. Note 5962 that these values will vary depending on the efficiency of the compiler and 5963 the compiler options used during generation. 5964 5965 Previous Release: 5966 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 5967 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 5968 Current Release: 5969 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 5970 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 5971 5972 5973 2) iASL Compiler/Disassembler: 5974 5975 Fixed a problem with constant folding and the LNot operator. LNot was 5976 returning 1 in the TRUE case, not Ones as per the ACPI specification. This 5977 could result in the generation of an incorrect folded/reduced constant. 5978 5979 End-Of-File is now allowed within a "//"-style comment. A parse error no 5980 longer occurs if such a comment is at the very end of the input ASL source 5981 file. 5982 5983 Implemented the "-r" option to override the Revision in the table header. 5984 The initial use of this option will be to simplify the evaluation of the AML 5985 interpreter by allowing a single ASL source module to be compiled for either 5986 32-bit or 64-bit integers. 5987 5988 5989 ---------------------------------------- 5990 27 August 2004. Summary of changes for version 20040827: 5991 5992 1) ACPI CA Core Subsystem: 5993 5994 - Implemented support for implicit object conversion in the non-numeric 5995 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and 5996 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 5997 the second operand is implicitly converted on the fly to match the type of 5998 the first operand. For example: 5999 6000 LEqual (Source1, Source2) 6001 6002 Source1 and Source2 must each evaluate to an integer, a string, or a buffer. 6003 The data type of Source1 dictates the required type of Source2. Source2 is 6004 implicitly converted if necessary to match the type of Source1. 6005 6006 - Updated and corrected the behavior of the string conversion support. The 6007 rules concerning conversion of buffers to strings (according to the ACPI 6008 specification) are as follows: 6009 6010 ToDecimalString - explicit byte-wise conversion of buffer to string of 6011 decimal values (0-255) separated by commas. ToHexString - explicit byte-wise 6012 conversion of buffer to string of hex values (0-FF) separated by commas. 6013 ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte 6014 copy with no transform except NULL terminated. Any other implicit buffer-to- 6015 string conversion - byte-wise conversion of buffer to string of hex values 6016 (0-FF) separated by spaces. 6017 6018 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 6019 6020 - Fixed a problem in AcpiNsGetPathnameLength where the returned length was 6021 one byte too short in the case of a node in the root scope. This could 6022 cause a fault during debug output. 6023 6024 - Code and Data Size: Current and previous core subsystem library sizes are 6025 shown below. These are the code and data sizes for the acpica.lib produced 6026 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6027 any ACPI driver or OSPM code. The debug version of the code includes the 6028 debug output trace mechanism and has a much larger code and data size. Note 6029 that these values will vary depending on the efficiency of the compiler and 6030 the compiler options used during generation. 6031 6032 Previous Release: 6033 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 6034 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 6035 Current Release: 6036 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 6037 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 6038 6039 6040 2) iASL Compiler/Disassembler: 6041 6042 - Fixed a Linux generation error. 6043 6044 6045 ---------------------------------------- 6046 16 August 2004. Summary of changes for version 20040816: 6047 6048 1) ACPI CA Core Subsystem: 6049 6050 Designed and implemented support within the AML interpreter for the so- 6051 called "implicit return". This support returns the result of the last ASL 6052 operation within a control method, in the absence of an explicit Return() 6053 operator. A few machines depend on this behavior, even though it is not 6054 explicitly supported by the ASL language. It is optional support that can 6055 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 6056 6057 Removed support for the PCI_Config address space from the internal low level 6058 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 6059 support was not used internally, and would not work correctly anyway because 6060 the PCI bus number and segment number were not supported. There are 6061 separate interfaces for PCI configuration space access because of the unique 6062 interface. 6063 6064 Code and Data Size: Current and previous core subsystem library sizes are 6065 shown below. These are the code and data sizes for the acpica.lib produced 6066 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6067 any ACPI driver or OSPM code. The debug version of the code includes the 6068 debug output trace mechanism and has a much larger code and data size. Note 6069 that these values will vary depending on the efficiency of the compiler and 6070 the compiler options used during generation. 6071 6072 Previous Release: 6073 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6074 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 6075 Current Release: 6076 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 6077 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 6078 6079 6080 2) iASL Compiler/Disassembler: 6081 6082 Fixed a problem where constants in ASL expressions at the root level (not 6083 within a control method) could be inadvertently truncated during code 6084 generation. This problem was introduced in the 20040715 release. 6085 6086 6087 ---------------------------------------- 6088 15 July 2004. Summary of changes for version 20040715: 6089 6090 1) ACPI CA Core Subsystem: 6091 6092 Restructured the internal HW GPE interfaces to pass/track the current state 6093 of interrupts (enabled/disabled) in order to avoid possible deadlock and 6094 increase flexibility of the interfaces. 6095 6096 Implemented a "lexicographical compare" for String and Buffer objects within 6097 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -- 6098 as per further clarification to the ACPI specification. Behavior is similar 6099 to C library "strcmp". 6100 6101 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 6102 external function. In the 32-bit non-debug case, the stack use has been 6103 reduced from 168 bytes to 32 bytes. 6104 6105 Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack, 6106 whose purpose is to allow the AML interpreter to forgive certain bad AML 6107 constructs. Default setting is FALSE. 6108 6109 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO 6110 support code. If enabled, it allows field access to go beyond the end of a 6111 region definition if the field is within the region length rounded up to the 6112 next access width boundary (a common coding error.) 6113 6114 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 6115 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these 6116 symbols are lowercased by the latest version of the AcpiSrc tool. 6117 6118 The prototypes for the PCI interfaces in acpiosxf.h have been updated to 6119 rename "Register" to simply "Reg" to prevent certain compilers from 6120 complaining. 6121 6122 Code and Data Size: Current and previous core subsystem library sizes are 6123 shown below. These are the code and data sizes for the acpica.lib produced 6124 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6125 any ACPI driver or OSPM code. The debug version of the code includes the 6126 debug output trace mechanism and has a much larger code and data size. Note 6127 that these values will vary depending on the efficiency of the compiler and 6128 the compiler options used during generation. 6129 6130 Previous Release: 6131 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6132 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 6133 Current Release: 6134 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6135 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 6136 6137 6138 2) iASL Compiler/Disassembler: 6139 6140 Implemented full support for Package objects within the Case() operator. 6141 Note: The Break() operator is currently not supported within Case blocks 6142 (TermLists) as there is some question about backward compatibility with ACPI 6143 1.0 interpreters. 6144 6145 6146 Fixed a problem where complex terms were not supported properly within the 6147 Switch() operator. 6148 6149 Eliminated extraneous warning for compiler-emitted reserved names of the 6150 form "_T_x". (Used in Switch/Case operators.) 6151 6152 Eliminated optimization messages for "_T_x" objects and small constants 6153 within the DefinitionBlock operator. 6154 6155 6156 ---------------------------------------- 6157 15 June 2004. Summary of changes for version 20040615: 6158 6159 1) ACPI CA Core Subsystem: 6160 6161 Implemented support for Buffer and String objects (as per ACPI 2.0) for the 6162 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 6163 LLessEqual. 6164 6165 All directory names in the entire source package are lower case, as they 6166 were in earlier releases. 6167 6168 Implemented "Disassemble" command in the AML debugger that will disassemble 6169 a single control method. 6170 6171 Code and Data Size: Current and previous core subsystem library sizes are 6172 shown below. These are the code and data sizes for the acpica.lib produced 6173 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6174 any ACPI driver or OSPM code. The debug version of the code includes the 6175 debug output trace mechanism and has a much larger code and data size. Note 6176 that these values will vary depending on the efficiency of the compiler and 6177 the compiler options used during generation. 6178 6179 Previous Release: 6180 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 6181 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 6182 6183 Current Release: 6184 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6185 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 6186 6187 6188 2) iASL Compiler/Disassembler: 6189 6190 Implemented support for Buffer and String objects (as per ACPI 2.0) for the 6191 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 6192 LLessEqual. 6193 6194 All directory names in the entire source package are lower case, as they 6195 were in earlier releases. 6196 6197 Fixed a fault when using the -g or -d<nofilename> options if the FADT was 6198 not found. 6199 6200 Fixed an issue with the Windows version of the compiler where later versions 6201 of Windows place the FADT in the registry under the name "FADT" and not 6202 "FACP" as earlier versions did. This applies when using the -g or - 6203 d<nofilename> options. The compiler now looks for both strings as 6204 necessary. 6205 6206 Fixed a problem with compiler namepath optimization where a namepath within 6207 the Scope() operator could not be optimized if the namepath was a subpath of 6208 the current scope path. 6209 6210 ---------------------------------------- 6211 27 May 2004. Summary of changes for version 20040527: 6212 6213 1) ACPI CA Core Subsystem: 6214 6215 Completed a new design and implementation for EBDA (Extended BIOS Data Area) 6216 support in the RSDP scan code. The original code improperly scanned for the 6217 EBDA by simply scanning from memory location 0 to 0x400. The correct method 6218 is to first obtain the EBDA pointer from within the BIOS data area, then 6219 scan 1K of memory starting at the EBDA pointer. There appear to be few if 6220 any machines that place the RSDP in the EBDA, however. 6221 6222 Integrated a fix for a possible fault during evaluation of BufferField 6223 arguments. Obsolete code that was causing the problem was removed. 6224 6225 Found and fixed a problem in the Field Support Code where data could be 6226 corrupted on a bit field read that starts on an aligned boundary but does 6227 not end on an aligned boundary. Merged the read/write "datum length" 6228 calculation code into a common procedure. 6229 6230 Rolled in a couple of changes to the FreeBSD-specific header. 6231 6232 6233 Code and Data Size: Current and previous core subsystem library sizes are 6234 shown below. These are the code and data sizes for the acpica.lib produced 6235 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6236 any ACPI driver or OSPM code. The debug version of the code includes the 6237 debug output trace mechanism and has a much larger code and data size. Note 6238 that these values will vary depending on the efficiency of the compiler and 6239 the compiler options used during generation. 6240 6241 Previous Release: 6242 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6243 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 6244 Current Release: 6245 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 6246 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 6247 6248 6249 2) iASL Compiler/Disassembler: 6250 6251 Fixed a generation warning produced by some overly-verbose compilers for a 6252 64-bit constant. 6253 6254 ---------------------------------------- 6255 14 May 2004. Summary of changes for version 20040514: 6256 6257 1) ACPI CA Core Subsystem: 6258 6259 Fixed a problem where hardware GPE enable bits sometimes not set properly 6260 during and after GPE method execution. Result of 04/27 changes. 6261 6262 Removed extra "clear all GPEs" when sleeping/waking. 6263 6264 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 6265 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to 6266 the new AcpiEv* calls as appropriate. 6267 6268 ACPI_OS_NAME was removed from the OS-specific headers. The default name is 6269 now "Microsoft Windows NT" for maximum compatibility. However this can be 6270 changed by modifying the acconfig.h file. 6271 6272 Allow a single invocation of AcpiInstallNotifyHandler for a handler that 6273 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 6274 6275 Run _INI methods on ThermalZone objects. This is against the ACPI 6276 specification, but there is apparently ASL code in the field that has these 6277 _INI methods, and apparently "other" AML interpreters execute them. 6278 6279 Performed a full 16/32/64 bit lint that resulted in some small changes. 6280 6281 Added a sleep simulation command to the AML debugger to test sleep code. 6282 6283 Code and Data Size: Current and previous core subsystem library sizes are 6284 shown below. These are the code and data sizes for the acpica.lib produced 6285 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6286 any ACPI driver or OSPM code. The debug version of the code includes the 6287 debug output trace mechanism and has a much larger code and data size. Note 6288 that these values will vary depending on the efficiency of the compiler and 6289 the compiler options used during generation. 6290 6291 Previous Release: 6292 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6293 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 6294 Current Release: 6295 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6296 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 6297 6298 ---------------------------------------- 6299 27 April 2004. Summary of changes for version 20040427: 6300 6301 1) ACPI CA Core Subsystem: 6302 6303 Completed a major overhaul of the GPE handling within ACPI CA. There are 6304 now three types of GPEs: wake-only, runtime-only, and combination wake/run. 6305 The only GPEs allowed to be combination wake/run are for button-style 6306 devices such as a control-method power button, control-method sleep button, 6307 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not 6308 referenced by any _PRW methods are marked for "runtime" and hardware 6309 enabled. Any GPE that is referenced by a _PRW method is marked for "wake" 6310 (and disabled at runtime). However, at sleep time, only those GPEs that 6311 have been specifically enabled for wake via the AcpiEnableGpe interface will 6312 actually be hardware enabled. 6313 6314 A new external interface has been added, AcpiSetGpeType(), that is meant to 6315 be used by device drivers to force a GPE to a particular type. It will be 6316 especially useful for the drivers for the button devices mentioned above. 6317 6318 Completed restructuring of the ACPI CA initialization sequence so that 6319 default operation region handlers are installed before GPEs are initialized 6320 and the _PRW methods are executed. This will prevent errors when the _PRW 6321 methods attempt to access system memory or I/O space. 6322 6323 GPE enable/disable no longer reads the GPE enable register. We now keep the 6324 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 6325 thus no longer depend on the hardware to maintain these bits. 6326 6327 Always clear the wake status and fixed/GPE status bits before sleep, even 6328 for state S5. 6329 6330 Improved the AML debugger output for displaying the GPE blocks and their 6331 current status. 6332 6333 Added new strings for the _OSI method, of the form "Windows 2001 SPx" where 6334 x = 0,1,2,3,4. 6335 6336 Fixed a problem where the physical address was incorrectly calculated when 6337 the Load() operator was used to directly load from an Operation Region (vs. 6338 loading from a Field object.) Also added check for minimum table length for 6339 this case. 6340 6341 Fix for multiple mutex acquisition. Restore original thread SyncLevel on 6342 mutex release. 6343 6344 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 6345 consistency with the other fields returned. 6346 6347 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 6348 structure for each GPE in the system, so the size of this structure is 6349 important. 6350 6351 CPU stack requirement reduction: Cleaned up the method execution and object 6352 evaluation paths so that now a parameter structure is passed, instead of 6353 copying the various method parameters over and over again. 6354 6355 In evregion.c: Correctly exit and reenter the interpreter region if and 6356 only if dispatching an operation region request to a user-installed handler. 6357 Do not exit/reenter when dispatching to a default handler (e.g., default 6358 system memory or I/O handlers) 6359 6360 6361 Notes for updating drivers for the new GPE support. The following changes 6362 must be made to ACPI-related device drivers that are attached to one or more 6363 GPEs: (This information will be added to the ACPI CA Programmer Reference.) 6364 6365 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you must 6366 explicitly call AcpiEnableGpe. 6367 2) There is a new interface called AcpiSetGpeType. This should be called 6368 before enabling the GPE. Also, this interface will automatically disable 6369 the GPE if it is currently enabled. 6370 3) AcpiEnableGpe no longer supports a GPE type flag. 6371 6372 Specific drivers that must be changed: 6373 1) EC driver: 6374 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 6375 AeGpeHandler, NULL); 6376 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 6377 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 6378 6379 2) Button Drivers (Power, Lid, Sleep): 6380 Run _PRW method under parent device 6381 If _PRW exists: /* This is a control-method button */ 6382 Extract GPE number and possibly GpeDevice 6383 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 6384 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 6385 6386 For all other devices that have _PRWs, we automatically set the GPE type to 6387 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This 6388 must be done on a selective basis, usually requiring some kind of user app 6389 to allow the user to pick the wake devices. 6390 6391 6392 Code and Data Size: Current and previous core subsystem library sizes are 6393 shown below. These are the code and data sizes for the acpica.lib produced 6394 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6395 any ACPI driver or OSPM code. The debug version of the code includes the 6396 debug output trace mechanism and has a much larger code and data size. Note 6397 that these values will vary depending on the efficiency of the compiler and 6398 the compiler options used during generation. 6399 6400 Previous Release: 6401 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 6402 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 6403 Current Release: 6404 6405 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6406 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 6407 6408 6409 6410 ---------------------------------------- 6411 02 April 2004. Summary of changes for version 20040402: 6412 6413 1) ACPI CA Core Subsystem: 6414 6415 Fixed an interpreter problem where an indirect store through an ArgX 6416 parameter was incorrectly applying the "implicit conversion rules" during 6417 the store. From the ACPI specification: "If the target is a method local or 6418 argument (LocalX or ArgX), no conversion is performed and the result is 6419 stored directly to the target". The new behavior is to disable implicit 6420 conversion during ALL stores to an ArgX. 6421 6422 Changed the behavior of the _PRW method scan to ignore any and all errors 6423 returned by a given _PRW. This prevents the scan from aborting from the 6424 failure of any single _PRW. 6425 6426 Moved the runtime configuration parameters from the global init procedure to 6427 static variables in acglobal.h. This will allow the host to override the 6428 default values easily. 6429 6430 Code and Data Size: Current and previous core subsystem library sizes are 6431 shown below. These are the code and data sizes for the acpica.lib produced 6432 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6433 any ACPI driver or OSPM code. The debug version of the code includes the 6434 debug output trace mechanism and has a much larger code and data size. Note 6435 that these values will vary depending on the efficiency of the compiler and 6436 the compiler options used during generation. 6437 6438 Previous Release: 6439 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 6440 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 6441 Current Release: 6442 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 6443 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 6444 6445 6446 2) iASL Compiler/Disassembler: 6447 6448 iASL now fully disassembles SSDTs. However, External() statements are not 6449 generated automatically for unresolved symbols at this time. This is a 6450 planned feature for future implementation. 6451 6452 Fixed a scoping problem in the disassembler that occurs when the type of the 6453 target of a Scope() operator is overridden. This problem caused an 6454 incorrectly nested internal namespace to be constructed. 6455 6456 Any warnings or errors that are emitted during disassembly are now commented 6457 out automatically so that the resulting file can be recompiled without any 6458 hand editing. 6459 6460 ---------------------------------------- 6461 26 March 2004. Summary of changes for version 20040326: 6462 6463 1) ACPI CA Core Subsystem: 6464 6465 Implemented support for "wake" GPEs via interaction between GPEs and the 6466 _PRW methods. Every GPE that is pointed to by one or more _PRWs is 6467 identified as a WAKE GPE and by default will no longer be enabled at 6468 runtime. Previously, we were blindly enabling all GPEs with a corresponding 6469 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We 6470 believe this has been the cause of thousands of "spurious" GPEs on some 6471 systems. 6472 6473 This new GPE behavior is can be reverted to the original behavior (enable 6474 ALL GPEs at runtime) via a runtime flag. 6475 6476 Fixed a problem where aliased control methods could not access objects 6477 properly. The proper scope within the namespace was not initialized 6478 (transferred to the target of the aliased method) before executing the 6479 target method. 6480 6481 Fixed a potential race condition on internal object deletion on the return 6482 object in AcpiEvaluateObject. 6483 6484 Integrated a fix for resource descriptors where both _MEM and _MTP were 6485 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 6486 wide, 0x0F instead of 0x03.) 6487 6488 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a 6489 fault in some cases. 6490 6491 Updated Notify() values for debug statements in evmisc.c 6492 6493 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 6494 6495 Code and Data Size: Current and previous core subsystem library sizes are 6496 shown below. These are the code and data sizes for the acpica.lib produced 6497 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6498 any ACPI driver or OSPM code. The debug version of the code includes the 6499 debug output trace mechanism and has a much larger code and data size. Note 6500 that these values will vary depending on the efficiency of the compiler and 6501 the compiler options used during generation. 6502 6503 Previous Release: 6504 6505 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 6506 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 6507 Current Release: 6508 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 6509 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 6510 6511 ---------------------------------------- 6512 11 March 2004. Summary of changes for version 20040311: 6513 6514 1) ACPI CA Core Subsystem: 6515 6516 Fixed a problem where errors occurring during the parse phase of control 6517 method execution did not abort cleanly. For example, objects created and 6518 installed in the namespace were not deleted. This caused all subsequent 6519 invocations of the method to return the AE_ALREADY_EXISTS exception. 6520 6521 Implemented a mechanism to force a control method to "Serialized" execution 6522 if the method attempts to create namespace objects. (The root of the 6523 AE_ALREADY_EXISTS problem.) 6524 6525 Implemented support for the predefined _OSI "internal" control method. 6526 Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and 6527 "Windows 2001.1", and can be easily upgraded for new strings as necessary. 6528 This feature will allow "other" operating systems to execute the fully 6529 tested, "Windows" code path through the ASL code 6530 6531 Global Lock Support: Now allows multiple acquires and releases with any 6532 internal thread. Removed concept of "owning thread" for this special mutex. 6533 6534 Fixed two functions that were inappropriately declaring large objects on the 6535 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during 6536 method execution considerably. 6537 6538 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 6539 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 6540 6541 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 6542 defined on the machine. 6543 6544 Implemented two runtime options: One to force all control method execution 6545 to "Serialized" to mimic Windows behavior, another to disable _OSI support 6546 if it causes problems on a given machine. 6547 6548 Code and Data Size: Current and previous core subsystem library sizes are 6549 shown below. These are the code and data sizes for the acpica.lib produced 6550 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6551 any ACPI driver or OSPM code. The debug version of the code includes the 6552 debug output trace mechanism and has a much larger code and data size. Note 6553 that these values will vary depending on the efficiency of the compiler and 6554 the compiler options used during generation. 6555 6556 Previous Release: 6557 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 6558 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 6559 Current Release: 6560 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 6561 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 6562 6563 2) iASL Compiler/Disassembler: 6564 6565 Fixed an array size problem for FreeBSD that would cause the compiler to 6566 fault. 6567 6568 ---------------------------------------- 6569 20 February 2004. Summary of changes for version 20040220: 6570 6571 6572 1) ACPI CA Core Subsystem: 6573 6574 Implemented execution of _SxD methods for Device objects in the 6575 GetObjectInfo interface. 6576 6577 Fixed calls to _SST method to pass the correct arguments. 6578 6579 Added a call to _SST on wake to restore to "working" state. 6580 6581 Check for End-Of-Buffer failure case in the WalkResources interface. 6582 6583 Integrated fix for 64-bit alignment issue in acglobal.h by moving two 6584 structures to the beginning of the file. 6585 6586 After wake, clear GPE status register(s) before enabling GPEs. 6587 6588 After wake, clear/enable power button. (Perhaps we should clear/enable all 6589 fixed events upon wake.) 6590 6591 Fixed a couple of possible memory leaks in the Namespace manager. 6592 6593 Integrated latest acnetbsd.h file. 6594 6595 ---------------------------------------- 6596 11 February 2004. Summary of changes for version 20040211: 6597 6598 6599 1) ACPI CA Core Subsystem: 6600 6601 Completed investigation and implementation of the call-by-reference 6602 mechanism for control method arguments. 6603 6604 Fixed a problem where a store of an object into an indexed package could 6605 fail if the store occurs within a different method than the method that 6606 created the package. 6607 6608 Fixed a problem where the ToDecimal operator could return incorrect results. 6609 6610 Fixed a problem where the CopyObject operator could fail on some of the more 6611 obscure objects (e.g., Reference objects.) 6612 6613 Improved the output of the Debug object to display buffer, package, and 6614 index objects. 6615 6616 Fixed a problem where constructs of the form "RefOf (ArgX)" did not return 6617 the expected result. 6618 6619 Added permanent ACPI_REPORT_ERROR macros for all instances of the 6620 ACPI_AML_INTERNAL exception. 6621 6622 Integrated latest version of acfreebsd.h 6623 6624 ---------------------------------------- 6625 16 January 2004. Summary of changes for version 20040116: 6626 6627 The purpose of this release is primarily to update the copyright years in 6628 each module, thus causing a huge number of diffs. There are a few small 6629 functional changes, however. 6630 6631 1) ACPI CA Core Subsystem: 6632 6633 Improved error messages when there is a problem finding one or more of the 6634 required base ACPI tables 6635 6636 Reintroduced the definition of APIC_HEADER in actbl.h 6637 6638 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 6639 6640 Removed extraneous reference to NewObj in dsmthdat.c 6641 6642 2) iASL compiler 6643 6644 Fixed a problem introduced in December that disabled the correct disassembly 6645 of Resource Templates 6646 6647 6648 ---------------------------------------- 6649 03 December 2003. Summary of changes for version 20031203: 6650 6651 1) ACPI CA Core Subsystem: 6652 6653 Changed the initialization of Operation Regions during subsystem 6654 init to perform two entire walks of the ACPI namespace; The first 6655 to initialize the regions themselves, the second to execute the 6656 _REG methods. This fixed some interdependencies across _REG 6657 methods found on some machines. 6658 6659 Fixed a problem where a Store(Local0, Local1) could simply update 6660 the object reference count, and not create a new copy of the 6661 object if the Local1 is uninitialized. 6662 6663 Implemented support for the _SST reserved method during sleep 6664 transitions. 6665 6666 Implemented support to clear the SLP_TYP and SLP_EN bits when 6667 waking up, this is apparently required by some machines. 6668 6669 When sleeping, clear the wake status only if SleepState is not S5. 6670 6671 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 6672 pointer arithmetic advanced a string pointer too far. 6673 6674 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 6675 could be returned if the requested table has not been loaded. 6676 6677 Within the support for IRQ resources, restructured the handling of 6678 the active and edge/level bits. 6679 6680 Fixed a few problems in AcpiPsxExecute() where memory could be 6681 leaked under certain error conditions. 6682 6683 Improved error messages for the cases where the ACPI mode could 6684 not be entered. 6685 6686 Code and Data Size: Current and previous core subsystem library 6687 sizes are shown below. These are the code and data sizes for the 6688 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6689 these values do not include any ACPI driver or OSPM code. The 6690 debug version of the code includes the debug output trace 6691 mechanism and has a much larger code and data size. Note that 6692 these values will vary depending on the efficiency of the compiler 6693 and the compiler options used during generation. 6694 6695 Previous Release (20031029): 6696 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 6697 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 6698 Current Release: 6699 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 6700 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 6701 6702 2) iASL Compiler/Disassembler: 6703 6704 Implemented a fix for the iASL disassembler where a bad index was 6705 generated. This was most noticeable on 64-bit platforms 6706 6707 6708 ---------------------------------------- 6709 29 October 2003. Summary of changes for version 20031029: 6710 6711 1) ACPI CA Core Subsystem: 6712 6713 6714 Fixed a problem where a level-triggered GPE with an associated 6715 _Lxx control method was incorrectly cleared twice. 6716 6717 Fixed a problem with the Field support code where an access can 6718 occur beyond the end-of-region if the field is non-aligned but 6719 extends to the very end of the parent region (resulted in an 6720 AE_AML_REGION_LIMIT exception.) 6721 6722 Fixed a problem with ACPI Fixed Events where an RT Clock handler 6723 would not get invoked on an RTC event. The RTC event bitmasks for 6724 the PM1 registers were not being initialized properly. 6725 6726 Implemented support for executing _STA and _INI methods for 6727 Processor objects. Although this is currently not part of the 6728 ACPI specification, there is existing ASL code that depends on the 6729 init-time execution of these methods. 6730 6731 Implemented and deployed a GetDescriptorName function to decode 6732 the various types of internal descriptors. Guards against null 6733 descriptors during debug output also. 6734 6735 Implemented and deployed a GetNodeName function to extract the 4- 6736 character namespace node name. This function simplifies the debug 6737 and error output, as well as guarding against null pointers during 6738 output. 6739 6740 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 6741 simplify the debug and error output of 64-bit integers. This 6742 macro replaces the HIDWORD and LODWORD macros for dumping these 6743 integers. 6744 6745 Updated the implementation of the Stall() operator to only call 6746 AcpiOsStall(), and also return an error if the operand is larger 6747 than 255. This preserves the required behavior of not 6748 relinquishing the processor, as would happen if AcpiOsSleep() was 6749 called for "long stalls". 6750 6751 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 6752 initialized are now treated as NOOPs. 6753 6754 Cleaned up a handful of warnings during 64-bit generation. 6755 6756 Fixed a reported error where and incorrect GPE number was passed 6757 to the GPE dispatch handler. This value is only used for error 6758 output, however. Used this opportunity to clean up and streamline 6759 the GPE dispatch code. 6760 6761 Code and Data Size: Current and previous core subsystem library 6762 sizes are shown below. These are the code and data sizes for the 6763 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6764 these values do not include any ACPI driver or OSPM code. The 6765 6766 debug version of the code includes the debug output trace 6767 mechanism and has a much larger code and data size. Note that 6768 these values will vary depending on the efficiency of the compiler 6769 and the compiler options used during generation. 6770 6771 Previous Release (20031002): 6772 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 6773 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 6774 Current Release: 6775 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 6776 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 6777 6778 6779 2) iASL Compiler/Disassembler: 6780 6781 Updated the iASL compiler to return an error if the operand to the 6782 Stall() operator is larger than 255. 6783 6784 6785 ---------------------------------------- 6786 02 October 2003. Summary of changes for version 20031002: 6787 6788 6789 1) ACPI CA Core Subsystem: 6790 6791 Fixed a problem with Index Fields where the index was not 6792 incremented for fields that require multiple writes to the 6793 index/data registers (Fields that are wider than the data 6794 register.) 6795 6796 Fixed a problem with all Field objects where a write could go 6797 beyond the end-of-field if the field was larger than the access 6798 granularity and therefore required multiple writes to complete the 6799 request. An extra write beyond the end of the field could happen 6800 inadvertently. 6801 6802 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 6803 would incorrectly be returned if the width of the Data Register 6804 was larger than the specified field access width. 6805 6806 Completed fixes for LoadTable() and Unload() and verified their 6807 operation. Implemented full support for the "DdbHandle" object 6808 throughout the ACPI CA subsystem. 6809 6810 Implemented full support for the MADT and ECDT tables in the ACPI 6811 CA header files. Even though these tables are not directly 6812 consumed by ACPI CA, the header definitions are useful for ACPI 6813 device drivers. 6814 6815 Integrated resource descriptor fixes posted to the Linux ACPI 6816 list. This included checks for minimum descriptor length, and 6817 support for trailing NULL strings within descriptors that have 6818 optional string elements. 6819 6820 Code and Data Size: Current and previous core subsystem library 6821 sizes are shown below. These are the code and data sizes for the 6822 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6823 these values do not include any ACPI driver or OSPM code. The 6824 debug version of the code includes the debug output trace 6825 mechanism and has a much larger code and data size. Note that 6826 these values will vary depending on the efficiency of the compiler 6827 and the compiler options used during generation. 6828 6829 Previous Release (20030918): 6830 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 6831 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 6832 Current Release: 6833 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 6834 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 6835 6836 6837 2) iASL Compiler: 6838 6839 Implemented detection of non-ASCII characters within the input 6840 source ASL file. This catches attempts to compile binary (AML) 6841 files early in the compile, with an informative error message. 6842 6843 Fixed a problem where the disassembler would fault if the output 6844 filename could not be generated or if the output file could not be 6845 opened. 6846 6847 ---------------------------------------- 6848 18 September 2003. Summary of changes for version 20030918: 6849 6850 6851 1) ACPI CA Core Subsystem: 6852 6853 Found and fixed a longstanding problem with the late execution of 6854 the various deferred AML opcodes (such as Operation Regions, 6855 Buffer Fields, Buffers, and Packages). If the name string 6856 specified for the name of the new object placed the object in a 6857 scope other than the current scope, the initialization/execution 6858 of the opcode failed. The solution to this problem was to 6859 implement a mechanism where the late execution of such opcodes 6860 does not attempt to lookup/create the name a second time in an 6861 incorrect scope. This fixes the "region size computed 6862 incorrectly" problem. 6863 6864 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 6865 Global Lock AE_BAD_PARAMETER error. 6866 6867 Fixed several 64-bit issues with prototypes, casting and data 6868 types. 6869 6870 Removed duplicate prototype from acdisasm.h 6871 6872 Fixed an issue involving EC Operation Region Detach (Shaohua Li) 6873 6874 Code and Data Size: Current and previous core subsystem library 6875 sizes are shown below. These are the code and data sizes for the 6876 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6877 these values do not include any ACPI driver or OSPM code. The 6878 debug version of the code includes the debug output trace 6879 mechanism and has a much larger code and data size. Note that 6880 these values will vary depending on the efficiency of the compiler 6881 and the compiler options used during generation. 6882 6883 Previous Release: 6884 6885 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 6886 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 6887 Current Release: 6888 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 6889 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 6890 6891 6892 2) Linux: 6893 6894 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 6895 correct sleep time in seconds. 6896 6897 ---------------------------------------- 6898 14 July 2003. Summary of changes for version 20030619: 6899 6900 1) ACPI CA Core Subsystem: 6901 6902 Parse SSDTs in order discovered, as opposed to reverse order 6903 (Hrvoje Habjanic) 6904 6905 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 6906 Klausner, 6907 Nate Lawson) 6908 6909 6910 2) Linux: 6911 6912 Dynamically allocate SDT list (suggested by Andi Kleen) 6913 6914 proc function return value cleanups (Andi Kleen) 6915 6916 Correctly handle NMI watchdog during long stalls (Andrew Morton) 6917 6918 Make it so acpismp=force works (reported by Andrew Morton) 6919 6920 6921 ---------------------------------------- 6922 19 June 2003. Summary of changes for version 20030619: 6923 6924 1) ACPI CA Core Subsystem: 6925 6926 Fix To/FromBCD, eliminating the need for an arch-specific #define. 6927 6928 Do not acquire a semaphore in the S5 shutdown path. 6929 6930 Fix ex_digits_needed for 0. (Takayoshi Kochi) 6931 6932 Fix sleep/stall code reversal. (Andi Kleen) 6933 6934 Revert a change having to do with control method calling 6935 semantics. 6936 6937 2) Linux: 6938 6939 acpiphp update (Takayoshi Kochi) 6940 6941 Export acpi_disabled for sonypi (Stelian Pop) 6942 6943 Mention acpismp=force in config help 6944 6945 Re-add acpitable.c and acpismp=force. This improves backwards 6946 6947 compatibility and also cleans up the code to a significant degree. 6948 6949 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 6950 6951 ---------------------------------------- 6952 22 May 2003. Summary of changes for version 20030522: 6953 6954 1) ACPI CA Core Subsystem: 6955 6956 Found and fixed a reported problem where an AE_NOT_FOUND error 6957 occurred occasionally during _BST evaluation. This turned out to 6958 be an Owner ID allocation issue where a called method did not get 6959 a new ID assigned to it. Eventually, (after 64k calls), the Owner 6960 ID UINT16 would wraparound so that the ID would be the same as the 6961 caller's and the called method would delete the caller's 6962 namespace. 6963 6964 Implemented extended error reporting for control methods that are 6965 aborted due to a run-time exception. Output includes the exact 6966 AML instruction that caused the method abort, a dump of the method 6967 locals and arguments at the time of the abort, and a trace of all 6968 nested control method calls. 6969 6970 Modified the interpreter to allow the creation of buffers of zero 6971 length from the AML code. Implemented new code to ensure that no 6972 attempt is made to actually allocate a memory buffer (of length 6973 zero) - instead, a simple buffer object with a NULL buffer pointer 6974 and length zero is created. A warning is no longer issued when 6975 the AML attempts to create a zero-length buffer. 6976 6977 Implemented a workaround for the "leading asterisk issue" in 6978 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 6979 asterisk is automatically removed if present in any HID, UID, or 6980 CID strings. The iASL compiler will still flag this asterisk as 6981 an error, however. 6982 6983 Implemented full support for _CID methods that return a package of 6984 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 6985 now additionally returns a device _CID list if present. This 6986 required a change to the external interface in order to pass an 6987 ACPI_BUFFER object as a parameter since the _CID list is of 6988 variable length. 6989 6990 Fixed a problem with the new AE_SAME_HANDLER exception where 6991 handler initialization code did not know about this exception. 6992 6993 Code and Data Size: Current and previous core subsystem library 6994 sizes are shown below. These are the code and data sizes for the 6995 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6996 these values do not include any ACPI driver or OSPM code. The 6997 debug version of the code includes the debug output trace 6998 mechanism and has a much larger code and data size. Note that 6999 these values will vary depending on the efficiency of the compiler 7000 and the compiler options used during generation. 7001 7002 Previous Release (20030509): 7003 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 7004 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 7005 Current Release: 7006 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 7007 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 7008 7009 7010 2) Linux: 7011 7012 Fixed a bug in which we would reinitialize the ACPI interrupt 7013 after it was already working, thus disabling all ACPI and the IRQs 7014 for any other device sharing the interrupt. (Thanks to Stian 7015 Jordet) 7016 7017 Toshiba driver update (John Belmonte) 7018 7019 Return only 0 or 1 for our interrupt handler status (Andrew 7020 Morton) 7021 7022 7023 3) iASL Compiler: 7024 7025 Fixed a reported problem where multiple (nested) ElseIf() 7026 statements were not handled correctly by the compiler, resulting 7027 in incorrect warnings and incorrect AML code. This was a problem 7028 in both the ASL parser and the code generator. 7029 7030 7031 4) Documentation: 7032 7033 Added changes to existing interfaces, new exception codes, and new 7034 text concerning reference count object management versus garbage 7035 collection. 7036 7037 ---------------------------------------- 7038 09 May 2003. Summary of changes for version 20030509. 7039 7040 7041 1) ACPI CA Core Subsystem: 7042 7043 Changed the subsystem initialization sequence to hold off 7044 installation of address space handlers until the hardware has been 7045 initialized and the system has entered ACPI mode. This is because 7046 the installation of space handlers can cause _REG methods to be 7047 run. Previously, the _REG methods could potentially be run before 7048 ACPI mode was enabled. 7049 7050 Fixed some memory leak issues related to address space handler and 7051 notify handler installation. There were some problems with the 7052 reference count mechanism caused by the fact that the handler 7053 objects are shared across several namespace objects. 7054 7055 Fixed a reported problem where reference counts within the 7056 namespace were not properly updated when named objects created by 7057 method execution were deleted. 7058 7059 Fixed a reported problem where multiple SSDTs caused a deletion 7060 issue during subsystem termination. Restructured the table data 7061 structures to simplify the linked lists and the related code. 7062 7063 Fixed a problem where the table ID associated with secondary 7064 tables (SSDTs) was not being propagated into the namespace objects 7065 created by those tables. This would only present a problem for 7066 tables that are unloaded at run-time, however. 7067 7068 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 7069 type as the length parameter (instead of UINT32). 7070 7071 Solved a long-standing problem where an ALREADY_EXISTS error 7072 appears on various systems. This problem could happen when there 7073 are multiple PCI_Config operation regions under a single PCI root 7074 bus. This doesn't happen very frequently, but there are some 7075 systems that do this in the ASL. 7076 7077 Fixed a reported problem where the internal DeleteNode function 7078 was incorrectly handling the case where a namespace node was the 7079 first in the parent's child list, and had additional peers (not 7080 the only child, but first in the list of children.) 7081 7082 Code and Data Size: Current core subsystem library sizes are shown 7083 below. These are the code and data sizes for the acpica.lib 7084 produced by the Microsoft Visual C++ 6.0 compiler, and these 7085 values do not include any ACPI driver or OSPM code. The debug 7086 version of the code includes the debug output trace mechanism and 7087 has a much larger code and data size. Note that these values will 7088 vary depending on the efficiency of the compiler and the compiler 7089 options used during generation. 7090 7091 Previous Release 7092 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 7093 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 7094 Current Release: 7095 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 7096 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 7097 7098 7099 2) Linux: 7100 7101 Allow ":" in OS override string (Ducrot Bruno) 7102 7103 Kobject fix (Greg KH) 7104 7105 7106 3 iASL Compiler/Disassembler: 7107 7108 Fixed a problem in the generation of the C source code files (AML 7109 is emitted in C source statements for BIOS inclusion) where the 7110 Ascii dump that appears within a C comment at the end of each line 7111 could cause a compile time error if the AML sequence happens to 7112 have an open comment or close comment sequence embedded. 7113 7114 7115 ---------------------------------------- 7116 24 April 2003. Summary of changes for version 20030424. 7117 7118 7119 1) ACPI CA Core Subsystem: 7120 7121 Support for big-endian systems has been implemented. Most of the 7122 support has been invisibly added behind big-endian versions of the 7123 ACPI_MOVE_* macros. 7124 7125 Fixed a problem in AcpiHwDisableGpeBlock() and 7126 AcpiHwClearGpeBlock() where an incorrect offset was passed to the 7127 low level hardware write routine. The offset parameter was 7128 actually eliminated from the low level read/write routines because 7129 they had become obsolete. 7130 7131 Fixed a problem where a handler object was deleted twice during 7132 the removal of a fixed event handler. 7133 7134 7135 2) Linux: 7136 7137 A fix for SMP systems with link devices was contributed by 7138 7139 Compaq's Dan Zink. 7140 7141 (2.5) Return whether we handled the interrupt in our IRQ handler. 7142 (Linux ISRs no longer return void, so we can propagate the handler 7143 return value from the ACPI CA core back to the OS.) 7144 7145 7146 7147 3) Documentation: 7148 7149 The ACPI CA Programmer Reference has been updated to reflect new 7150 interfaces and changes to existing interfaces. 7151 7152 ---------------------------------------- 7153 28 March 2003. Summary of changes for version 20030328. 7154 7155 1) ACPI CA Core Subsystem: 7156 7157 The GPE Block Device support has been completed. New interfaces 7158 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 7159 interfaces (enable, disable, clear, getstatus) have been split 7160 into separate interfaces for Fixed Events and General Purpose 7161 Events (GPEs) in order to support GPE Block Devices properly. 7162 7163 Fixed a problem where the error message "Failed to acquire 7164 semaphore" would appear during operations on the embedded 7165 controller (EC). 7166 7167 Code and Data Size: Current core subsystem library sizes are shown 7168 below. These are the code and data sizes for the acpica.lib 7169 produced by the Microsoft Visual C++ 6.0 compiler, and these 7170 values do not include any ACPI driver or OSPM code. The debug 7171 version of the code includes the debug output trace mechanism and 7172 has a much larger code and data size. Note that these values will 7173 vary depending on the efficiency of the compiler and the compiler 7174 options used during generation. 7175 7176 Previous Release 7177 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 7178 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 7179 Current Release: 7180 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 7181 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 7182 7183 7184 ---------------------------------------- 7185 28 February 2003. Summary of changes for version 20030228. 7186 7187 7188 1) ACPI CA Core Subsystem: 7189 7190 The GPE handling and dispatch code has been completely overhauled 7191 in preparation for support of GPE Block Devices (ID ACPI0006). 7192 This affects internal data structures and code only; there should 7193 be no differences visible externally. One new file has been 7194 added, evgpeblk.c 7195 7196 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 7197 fields that are used to determine the GPE block lengths. The 7198 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 7199 structures are ignored. This is per the ACPI specification but it 7200 isn't very clear. The full 256 Block 0/1 GPEs are now supported 7201 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 7202 7203 In the SCI interrupt handler, removed the read of the PM1_CONTROL 7204 register to look at the SCI_EN bit. On some machines, this read 7205 causes an SMI event and greatly slows down SCI events. (This may 7206 in fact be the cause of slow battery status response on some 7207 systems.) 7208 7209 Fixed a problem where a store of a NULL string to a package object 7210 could cause the premature deletion of the object. This was seen 7211 during execution of the battery _BIF method on some systems, 7212 resulting in no battery data being returned. 7213 7214 Added AcpiWalkResources interface to simplify parsing of resource 7215 lists. 7216 7217 Code and Data Size: Current core subsystem library sizes are shown 7218 below. These are the code and data sizes for the acpica.lib 7219 produced by the Microsoft Visual C++ 6.0 compiler, and these 7220 values do not include any ACPI driver or OSPM code. The debug 7221 version of the code includes the debug output trace mechanism and 7222 has a much larger code and data size. Note that these values will 7223 vary depending on the efficiency of the compiler and the compiler 7224 options used during generation. 7225 7226 Previous Release 7227 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7228 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7229 Current Release: 7230 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 7231 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 7232 7233 7234 2) Linux 7235 7236 S3 fixes (Ole Rohne) 7237 7238 Update ACPI PHP driver with to use new acpi_walk_resource API 7239 (Bjorn Helgaas) 7240 7241 Add S4BIOS support (Pavel Machek) 7242 7243 Map in entire table before performing checksum (John Stultz) 7244 7245 Expand the mem= cmdline to allow the specification of reserved and 7246 ACPI DATA blocks (Pavel Machek) 7247 7248 Never use ACPI on VISWS 7249 7250 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 7251 7252 Revert a change that allowed P_BLK lengths to be 4 or 5. This is 7253 causing us to think that some systems support C2 when they really 7254 don't. 7255 7256 Do not count processor objects for non-present CPUs (Thanks to 7257 Dominik Brodowski) 7258 7259 7260 3) iASL Compiler: 7261 7262 Fixed a problem where ASL include files could not be found and 7263 opened. 7264 7265 Added support for the _PDC reserved name. 7266 7267 7268 ---------------------------------------- 7269 22 January 2003. Summary of changes for version 20030122. 7270 7271 7272 1) ACPI CA Core Subsystem: 7273 7274 Added a check for constructs of the form: Store (Local0, Local0) 7275 where Local0 is not initialized. Apparently, some BIOS 7276 programmers believe that this is a NOOP. Since this store doesn't 7277 do anything anyway, the new prototype behavior will ignore this 7278 error. This is a case where we can relax the strict checking in 7279 the interpreter in the name of compatibility. 7280 7281 7282 2) Linux 7283 7284 The AcpiSrc Source Conversion Utility has been released with the 7285 Linux package for the first time. This is the utility that is 7286 used to convert the ACPI CA base source code to the Linux version. 7287 7288 (Both) Handle P_BLK lengths shorter than 6 more gracefully 7289 7290 (Both) Move more headers to include/acpi, and delete an unused 7291 header. 7292 7293 (Both) Move drivers/acpi/include directory to include/acpi 7294 7295 (Both) Boot functions don't use cmdline, so don't pass it around 7296 7297 (Both) Remove include of unused header (Adrian Bunk) 7298 7299 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 7300 the 7301 former now also includes the latter, acpiphp.h only needs the one, 7302 now. 7303 7304 (2.5) Make it possible to select method of bios restoring after S3 7305 resume. [=> no more ugly ifdefs] (Pavel Machek) 7306 7307 (2.5) Make proc write interfaces work (Pavel Machek) 7308 7309 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 7310 7311 (2.5) Break out ACPI Perf code into its own module, under cpufreq 7312 (Dominik Brodowski) 7313 7314 (2.4) S4BIOS support (Ducrot Bruno) 7315 7316 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 7317 Visinoni) 7318 7319 7320 3) iASL Compiler: 7321 7322 Added support to disassemble SSDT and PSDTs. 7323 7324 Implemented support to obtain SSDTs from the Windows registry if 7325 available. 7326 7327 7328 ---------------------------------------- 7329 09 January 2003. Summary of changes for version 20030109. 7330 7331 1) ACPI CA Core Subsystem: 7332 7333 Changed the behavior of the internal Buffer-to-String conversion 7334 function. The current ACPI specification states that the contents 7335 of the buffer are "converted to a string of two-character 7336 hexadecimal numbers, each separated by a space". Unfortunately, 7337 this definition is not backwards compatible with existing ACPI 1.0 7338 implementations (although the behavior was not defined in the ACPI 7339 1.0 specification). The new behavior simply copies data from the 7340 buffer to the string until a null character is found or the end of 7341 the buffer is reached. The new String object is always null 7342 terminated. This problem was seen during the generation of _BIF 7343 battery data where incorrect strings were returned for battery 7344 type, etc. This will also require an errata to the ACPI 7345 specification. 7346 7347 Renamed all instances of NATIVE_UINT and NATIVE_INT to 7348 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 7349 7350 Copyright in all module headers (both Linux and non-Linux) has be 7351 updated to 2003. 7352 7353 Code and Data Size: Current core subsystem library sizes are shown 7354 below. These are the code and data sizes for the acpica.lib 7355 produced by the Microsoft Visual C++ 6.0 compiler, and these 7356 values do not include any ACPI driver or OSPM code. The debug 7357 version of the code includes the debug output trace mechanism and 7358 has a much larger code and data size. Note that these values will 7359 vary depending on the efficiency of the compiler and the compiler 7360 options used during generation. 7361 7362 Previous Release 7363 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7364 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7365 Current Release: 7366 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7367 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7368 7369 7370 2) Linux 7371 7372 Fixed an oops on module insertion/removal (Matthew Tippett) 7373 7374 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 7375 7376 (2.5) Replace pr_debug (Randy Dunlap) 7377 7378 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 7379 7380 (Both) Eliminate spawning of thread from timer callback, in favor 7381 of schedule_work() 7382 7383 (Both) Show Lid status in /proc (Zdenek OGAR Skalak) 7384 7385 (Both) Added define for Fixed Function HW region (Matthew Wilcox) 7386 7387 (Both) Add missing statics to button.c (Pavel Machek) 7388 7389 Several changes have been made to the source code translation 7390 utility that generates the Linux Code in order to make the code 7391 more "Linux-like": 7392 7393 All typedefs on structs and unions have been removed in keeping 7394 with the Linux coding style. 7395 7396 Removed the non-Linux SourceSafe module revision number from each 7397 module header. 7398 7399 Completed major overhaul of symbols to be lowercased for linux. 7400 Doubled the number of symbols that are lowercased. 7401 7402 Fixed a problem where identifiers within procedure headers and 7403 within quotes were not fully lower cased (they were left with a 7404 starting capital.) 7405 7406 Some C macros whose only purpose is to allow the generation of 16- 7407 bit code are now completely removed in the Linux code, increasing 7408 readability and maintainability. 7409 7410 ---------------------------------------- 7411 7412 12 December 2002. Summary of changes for version 20021212. 7413 7414 7415 1) ACPI CA Core Subsystem: 7416 7417 Fixed a problem where the creation of a zero-length AML Buffer 7418 would cause a fault. 7419 7420 Fixed a problem where a Buffer object that pointed to a static AML 7421 buffer (in an ACPI table) could inadvertently be deleted, causing 7422 memory corruption. 7423 7424 Fixed a problem where a user buffer (passed in to the external 7425 ACPI CA interfaces) could be overwritten if the buffer was too 7426 small to complete the operation, causing memory corruption. 7427 7428 Fixed a problem in the Buffer-to-String conversion code where a 7429 string of length one was always returned, regardless of the size 7430 of the input Buffer object. 7431 7432 Removed the NATIVE_CHAR data type across the entire source due to 7433 lack of need and lack of consistent use. 7434 7435 Code and Data Size: Current core subsystem library sizes are shown 7436 below. These are the code and data sizes for the acpica.lib 7437 produced by the Microsoft Visual C++ 6.0 compiler, and these 7438 values do not include any ACPI driver or OSPM code. The debug 7439 version of the code includes the debug output trace mechanism and 7440 has a much larger code and data size. Note that these values will 7441 vary depending on the efficiency of the compiler and the compiler 7442 options used during generation. 7443 7444 Previous Release 7445 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 7446 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 7447 Current Release: 7448 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7449 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7450 7451 7452 ---------------------------------------- 7453 05 December 2002. Summary of changes for version 20021205. 7454 7455 1) ACPI CA Core Subsystem: 7456 7457 Fixed a problem where a store to a String or Buffer object could 7458 cause corruption of the DSDT if the object type being stored was 7459 the same as the target object type and the length of the object 7460 being stored was equal to or smaller than the original (existing) 7461 target object. This was seen to cause corruption of battery _BIF 7462 buffers if the _BIF method modified the buffer on the fly. 7463 7464 Fixed a problem where an internal error was generated if a control 7465 method invocation was used in an OperationRegion, Buffer, or 7466 Package declaration. This was caused by the deferred parsing of 7467 the control method and thus the deferred creation of the internal 7468 method object. The solution to this problem was to create the 7469 internal method object at the moment the method is encountered in 7470 the first pass - so that subsequent references to the method will 7471 able to obtain the required parameter count and thus properly 7472 parse the method invocation. This problem presented itself as an 7473 AE_AML_INTERNAL during the pass 1 parse phase during table load. 7474 7475 Fixed a problem where the internal String object copy routine did 7476 not always allocate sufficient memory for the target String object 7477 and caused memory corruption. This problem was seen to cause 7478 "Allocation already present in list!" errors as memory allocation 7479 became corrupted. 7480 7481 Implemented a new function for the evaluation of namespace objects 7482 that allows the specification of the allowable return object 7483 types. This simplifies a lot of code that checks for a return 7484 object of one or more specific objects returned from the 7485 evaluation (such as _STA, etc.) This may become and external 7486 function if it would be useful to ACPI-related drivers. 7487 7488 Completed another round of prefixing #defines with "ACPI_" for 7489 clarity. 7490 7491 Completed additional code restructuring to allow more modular 7492 linking for iASL compiler and AcpiExec. Several files were split 7493 creating new files. New files: nsparse.c dsinit.c evgpe.c 7494 7495 Implemented an abort mechanism to terminate an executing control 7496 method via the AML debugger. This feature is useful for debugging 7497 control methods that depend (wait) for specific hardware 7498 responses. 7499 7500 Code and Data Size: Current core subsystem library sizes are shown 7501 below. These are the code and data sizes for the acpica.lib 7502 produced by the Microsoft Visual C++ 6.0 compiler, and these 7503 values do not include any ACPI driver or OSPM code. The debug 7504 version of the code includes the debug output trace mechanism and 7505 has a much larger code and data size. Note that these values will 7506 vary depending on the efficiency of the compiler and the compiler 7507 options used during generation. 7508 7509 Previous Release 7510 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7511 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 7512 Current Release: 7513 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 7514 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 7515 7516 7517 2) iASL Compiler/Disassembler 7518 7519 Fixed a compiler code generation problem for "Interrupt" Resource 7520 Descriptors. If specified in the ASL, the optional "Resource 7521 Source Index" and "Resource Source" fields were not inserted into 7522 the correct location within the AML resource descriptor, creating 7523 an invalid descriptor. 7524 7525 Fixed a disassembler problem for "Interrupt" resource descriptors. 7526 The optional "Resource Source Index" and "Resource Source" fields 7527 were ignored. 7528 7529 7530 ---------------------------------------- 7531 22 November 2002. Summary of changes for version 20021122. 7532 7533 7534 1) ACPI CA Core Subsystem: 7535 7536 Fixed a reported problem where an object stored to a Method Local 7537 or Arg was not copied to a new object during the store - the 7538 object pointer was simply copied to the Local/Arg. This caused 7539 all subsequent operations on the Local/Arg to also affect the 7540 original source of the store operation. 7541 7542 Fixed a problem where a store operation to a Method Local or Arg 7543 was not completed properly if the Local/Arg contained a reference 7544 (from RefOf) to a named field. The general-purpose store-to- 7545 namespace-node code is now used so that this case is handled 7546 automatically. 7547 7548 Fixed a problem where the internal object copy routine would cause 7549 a protection fault if the object being copied was a Package and 7550 contained either 1) a NULL package element or 2) a nested sub- 7551 package. 7552 7553 Fixed a problem with the GPE initialization that resulted from an 7554 ambiguity in the ACPI specification. One section of the 7555 specification states that both the address and length of the GPE 7556 block must be zero if the block is not supported. Another section 7557 implies that only the address need be zero if the block is not 7558 supported. The code has been changed so that both the address and 7559 the length must be non-zero to indicate a valid GPE block (i.e., 7560 if either the address or the length is zero, the GPE block is 7561 invalid.) 7562 7563 Code and Data Size: Current core subsystem library sizes are shown 7564 below. These are the code and data sizes for the acpica.lib 7565 produced by the Microsoft Visual C++ 6.0 compiler, and these 7566 values do not include any ACPI driver or OSPM code. The debug 7567 version of the code includes the debug output trace mechanism and 7568 has a much larger code and data size. Note that these values will 7569 vary depending on the efficiency of the compiler and the compiler 7570 options used during generation. 7571 7572 Previous Release 7573 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 7574 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 7575 Current Release: 7576 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7577 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 7578 7579 7580 2) Linux 7581 7582 Cleaned up EC driver. Exported an external EC read/write 7583 interface. By going through this, other drivers (most notably 7584 sonypi) will be able to serialize access to the EC. 7585 7586 7587 3) iASL Compiler/Disassembler 7588 7589 Implemented support to optionally generate include files for both 7590 ASM and C (the -i switch). This simplifies BIOS development by 7591 automatically creating include files that contain external 7592 declarations for the symbols that are created within the 7593 7594 (optionally generated) ASM and C AML source files. 7595 7596 7597 ---------------------------------------- 7598 15 November 2002. Summary of changes for version 20021115. 7599 7600 1) ACPI CA Core Subsystem: 7601 7602 Fixed a memory leak problem where an error during resolution of 7603 7604 method arguments during a method invocation from another method 7605 failed to cleanup properly by deleting all successfully resolved 7606 argument objects. 7607 7608 Fixed a problem where the target of the Index() operator was not 7609 correctly constructed if the source object was a package. This 7610 problem has not been detected because the use of a target operand 7611 with Index() is very rare. 7612 7613 Fixed a problem with the Index() operator where an attempt was 7614 made to delete the operand objects twice. 7615 7616 Fixed a problem where an attempt was made to delete an operand 7617 twice during execution of the CondRefOf() operator if the target 7618 did not exist. 7619 7620 Implemented the first of perhaps several internal create object 7621 functions that create and initialize a specific object type. This 7622 consolidates duplicated code wherever the object is created, thus 7623 shrinking the size of the subsystem. 7624 7625 Implemented improved debug/error messages for errors that occur 7626 during nested method invocations. All executing method pathnames 7627 are displayed (with the error) as the call stack is unwound - thus 7628 simplifying debug. 7629 7630 Fixed a problem introduced in the 10/02 release that caused 7631 premature deletion of a buffer object if a buffer was used as an 7632 ASL operand where an integer operand is required (Thus causing an 7633 implicit object conversion from Buffer to Integer.) The change in 7634 the 10/02 release was attempting to fix a memory leak (albeit 7635 incorrectly.) 7636 7637 Code and Data Size: Current core subsystem library sizes are shown 7638 below. These are the code and data sizes for the acpica.lib 7639 produced by the Microsoft Visual C++ 6.0 compiler, and these 7640 values do not include any ACPI driver or OSPM code. The debug 7641 version of the code includes the debug output trace mechanism and 7642 has a much larger code and data size. Note that these values will 7643 vary depending on the efficiency of the compiler and the compiler 7644 options used during generation. 7645 7646 Previous Release 7647 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 7648 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 7649 Current Release: 7650 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 7651 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 7652 7653 7654 2) Linux 7655 7656 Changed the implementation of the ACPI semaphores to use down() 7657 instead of down_interruptable(). It is important that the 7658 execution of ACPI control methods not be interrupted by signals. 7659 Methods must run to completion, or the system may be left in an 7660 unknown/unstable state. 7661 7662 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 7663 (Shawn Starr) 7664 7665 7666 3) iASL Compiler/Disassembler 7667 7668 7669 Changed the default location of output files. All output files 7670 are now placed in the current directory by default instead of in 7671 the directory of the source file. This change may affect some 7672 existing makefiles, but it brings the behavior of the compiler in 7673 line with other similar tools. The location of the output files 7674 can be overridden with the -p command line switch. 7675 7676 7677 ---------------------------------------- 7678 11 November 2002. Summary of changes for version 20021111. 7679 7680 7681 0) ACPI Specification 2.0B is released and is now available at: 7682 http://www.acpi.info/index.html 7683 7684 7685 1) ACPI CA Core Subsystem: 7686 7687 Implemented support for the ACPI 2.0 SMBus Operation Regions. 7688 This includes the early detection and handoff of the request to 7689 the SMBus region handler (avoiding all of the complex field 7690 support code), and support for the bidirectional return packet 7691 from an SMBus write operation. This paves the way for the 7692 development of SMBus drivers in each host operating system. 7693 7694 Fixed a problem where the semaphore WAIT_FOREVER constant was 7695 defined as 32 bits, but must be 16 bits according to the ACPI 7696 specification. This had the side effect of causing ASL 7697 Mutex/Event timeouts even though the ASL code requested a wait 7698 forever. Changed all internal references to the ACPI timeout 7699 parameter to 16 bits to prevent future problems. Changed the name 7700 of WAIT_FOREVER to ACPI_WAIT_FOREVER. 7701 7702 Code and Data Size: Current core subsystem library sizes are shown 7703 below. These are the code and data sizes for the acpica.lib 7704 produced by the Microsoft Visual C++ 6.0 compiler, and these 7705 values do not include any ACPI driver or OSPM code. The debug 7706 version of the code includes the debug output trace mechanism and 7707 has a much larger code and data size. Note that these values will 7708 vary depending on the efficiency of the compiler and the compiler 7709 options used during generation. 7710 7711 Previous Release 7712 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7713 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 7714 Current Release: 7715 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 7716 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 7717 7718 7719 2) Linux 7720 7721 Module loading/unloading fixes (John Cagle) 7722 7723 7724 3) iASL Compiler/Disassembler 7725 7726 Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 7727 7728 Implemented support for the disassembly of all SMBus protocol 7729 keywords (SMBQuick, SMBWord, etc.) 7730 7731 ---------------------------------------- 7732 01 November 2002. Summary of changes for version 20021101. 7733 7734 7735 1) ACPI CA Core Subsystem: 7736 7737 Fixed a problem where platforms that have a GPE1 block but no GPE0 7738 block were not handled correctly. This resulted in a "GPE 7739 overlap" error message. GPE0 is no longer required. 7740 7741 Removed code added in the previous release that inserted nodes 7742 into the namespace in alphabetical order. This caused some side- 7743 effects on various machines. The root cause of the problem is 7744 still under investigation since in theory, the internal ordering 7745 of the namespace nodes should not matter. 7746 7747 7748 Enhanced error reporting for the case where a named object is not 7749 found during control method execution. The full ACPI namepath 7750 (name reference) of the object that was not found is displayed in 7751 this case. 7752 7753 Note: as a result of the overhaul of the namespace object types in 7754 the previous release, the namespace nodes for the predefined 7755 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 7756 instead of ACPI_TYPE_ANY. This simplifies the namespace 7757 management code but may affect code that walks the namespace tree 7758 looking for specific object types. 7759 7760 Code and Data Size: Current core subsystem library sizes are shown 7761 below. These are the code and data sizes for the acpica.lib 7762 produced by the Microsoft Visual C++ 6.0 compiler, and these 7763 values do not include any ACPI driver or OSPM code. The debug 7764 version of the code includes the debug output trace mechanism and 7765 has a much larger code and data size. Note that these values will 7766 vary depending on the efficiency of the compiler and the compiler 7767 options used during generation. 7768 7769 Previous Release 7770 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 7771 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 7772 Current Release: 7773 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7774 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 7775 7776 7777 2) Linux 7778 7779 Fixed a problem introduced in the previous release where the 7780 Processor and Thermal objects were not recognized and installed in 7781 /proc. This was related to the scope type change described above. 7782 7783 7784 3) iASL Compiler/Disassembler 7785 7786 Implemented the -g option to get all of the required ACPI tables 7787 from the registry and save them to files (Windows version of the 7788 compiler only.) The required tables are the FADT, FACS, and DSDT. 7789 7790 Added ACPI table checksum validation during table disassembly in 7791 order to catch corrupted tables. 7792 7793 7794 ---------------------------------------- 7795 22 October 2002. Summary of changes for version 20021022. 7796 7797 1) ACPI CA Core Subsystem: 7798 7799 Implemented a restriction on the Scope operator that the target 7800 must already exist in the namespace at the time the operator is 7801 encountered (during table load or method execution). In other 7802 words, forward references are not allowed and Scope() cannot 7803 create a new object. This changes the previous behavior where the 7804 interpreter would create the name if not found. This new behavior 7805 correctly enables the search-to-root algorithm during namespace 7806 lookup of the target name. Because of this upsearch, this fixes 7807 the known Compaq _SB_.OKEC problem and makes both the AML 7808 interpreter and iASL compiler compatible with other ACPI 7809 implementations. 7810 7811 Completed a major overhaul of the internal ACPI object types for 7812 the ACPI Namespace and the associated operand objects. Many of 7813 these types had become obsolete with the introduction of the two- 7814 pass namespace load. This cleanup simplifies the code and makes 7815 the entire namespace load mechanism much clearer and easier to 7816 understand. 7817 7818 Improved debug output for tracking scope opening/closing to help 7819 diagnose scoping issues. The old scope name as well as the new 7820 scope name are displayed. Also improved error messages for 7821 problems with ASL Mutex objects and error messages for GPE 7822 problems. 7823 7824 Cleaned up the namespace dump code, removed obsolete code. 7825 7826 All string output (for all namespace/object dumps) now uses the 7827 common ACPI string output procedure which handles escapes properly 7828 and does not emit non-printable characters. 7829 7830 Fixed some issues with constants in the 64-bit version of the 7831 local C library (utclib.c) 7832 7833 7834 2) Linux 7835 7836 EC Driver: No longer attempts to acquire the Global Lock at 7837 interrupt level. 7838 7839 7840 3) iASL Compiler/Disassembler 7841 7842 Implemented ACPI 2.0B grammar change that disallows all Type 1 and 7843 2 opcodes outside of a control method. This means that the 7844 "executable" operators (versus the "namespace" operators) cannot 7845 be used at the table level; they can only be used within a control 7846 method. 7847 7848 Implemented the restriction on the Scope() operator where the 7849 target must already exist in the namespace at the time the 7850 operator is encountered (during ASL compilation). In other words, 7851 forward references are not allowed and Scope() cannot create a new 7852 object. This makes the iASL compiler compatible with other ACPI 7853 implementations and makes the Scope() implementation adhere to the 7854 ACPI specification. 7855 7856 Fixed a problem where namepath optimization for the Alias operator 7857 was optimizing the wrong path (of the two namepaths.) This caused 7858 a "Missing alias link" error message. 7859 7860 Fixed a problem where an "unknown reserved name" warning could be 7861 incorrectly generated for names like "_SB" when the trailing 7862 underscore is not used in the original ASL. 7863 7864 Fixed a problem where the reserved name check did not handle 7865 NamePaths with multiple NameSegs correctly. The first nameseg of 7866 the NamePath was examined instead of the last NameSeg. 7867 7868 7869 ---------------------------------------- 7870 7871 02 October 2002. Summary of changes for this release. 7872 7873 7874 1) ACPI CA Core Subsystem version 20021002: 7875 7876 Fixed a problem where a store/copy of a string to an existing 7877 string did not always set the string length properly in the String 7878 object. 7879 7880 Fixed a reported problem with the ToString operator where the 7881 behavior was identical to the ToHexString operator instead of just 7882 simply converting a raw buffer to a string data type. 7883 7884 Fixed a problem where CopyObject and the other "explicit" 7885 conversion operators were not updating the internal namespace node 7886 type as part of the store operation. 7887 7888 Fixed a memory leak during implicit source operand conversion 7889 where the original object was not deleted if it was converted to a 7890 new object of a different type. 7891 7892 Enhanced error messages for all problems associated with namespace 7893 lookups. Common procedure generates and prints the lookup name as 7894 well as the formatted status. 7895 7896 Completed implementation of a new design for the Alias support 7897 within the namespace. The existing design did not handle the case 7898 where a new object was assigned to one of the two names due to the 7899 use of an explicit conversion operator, resulting in the two names 7900 pointing to two different objects. The new design simply points 7901 the Alias name to the original name node - not to the object. 7902 This results in a level of indirection that must be handled in the 7903 name resolution mechanism. 7904 7905 Code and Data Size: Current core subsystem library sizes are shown 7906 below. These are the code and data sizes for the acpica.lib 7907 produced by the Microsoft Visual C++ 6.0 compiler, and these 7908 values do not include any ACPI driver or OSPM code. The debug 7909 version of the code includes the debug output trace mechanism and 7910 has a larger code and data size. Note that these values will vary 7911 depending on the efficiency of the compiler and the compiler 7912 options used during generation. 7913 7914 Previous Release 7915 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 7916 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 7917 Current Release: 7918 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 7919 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 7920 7921 7922 2) Linux 7923 7924 Initialize thermal driver's timer before it is used. (Knut 7925 Neumann) 7926 7927 Allow handling negative celsius values. (Kochi Takayoshi) 7928 7929 Fix thermal management and make trip points. R/W (Pavel Machek) 7930 7931 Fix /proc/acpi/sleep. (P. Christeas) 7932 7933 IA64 fixes. (David Mosberger) 7934 7935 Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 7936 7937 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 7938 Brodowski) 7939 7940 7941 3) iASL Compiler/Disassembler 7942 7943 Clarified some warning/error messages. 7944 7945 7946 ---------------------------------------- 7947 18 September 2002. Summary of changes for this release. 7948 7949 7950 1) ACPI CA Core Subsystem version 20020918: 7951 7952 Fixed a reported problem with reference chaining (via the Index() 7953 and RefOf() operators) in the ObjectType() and SizeOf() operators. 7954 The definition of these operators includes the dereferencing of 7955 all chained references to return information on the base object. 7956 7957 Fixed a problem with stores to indexed package elements - the 7958 existing code would not complete the store if an "implicit 7959 conversion" was not performed. In other words, if the existing 7960 object (package element) was to be replaced completely, the code 7961 didn't handle this case. 7962 7963 Relaxed typechecking on the ASL "Scope" operator to allow the 7964 target name to refer to an object of type Integer, String, or 7965 Buffer, in addition to the scoping object types (Device, 7966 predefined Scopes, Processor, PowerResource, and ThermalZone.) 7967 This allows existing AML code that has workarounds for a bug in 7968 Windows to function properly. A warning is issued, however. This 7969 affects both the AML interpreter and the iASL compiler. Below is 7970 an example of this type of ASL code: 7971 7972 Name(DEB,0x00) 7973 Scope(DEB) 7974 { 7975 7976 Fixed some reported problems with 64-bit integer support in the 7977 local implementation of C library functions (clib.c) 7978 7979 7980 2) Linux 7981 7982 Use ACPI fix map region instead of IOAPIC region, since it is 7983 undefined in non-SMP. 7984 7985 Ensure that the SCI has the proper polarity and trigger, even on 7986 systems that do not have an interrupt override entry in the MADT. 7987 7988 2.5 big driver reorganization (Pat Mochel) 7989 7990 Use early table mapping code from acpitable.c (Andi Kleen) 7991 7992 New blacklist entries (Andi Kleen) 7993 7994 Blacklist improvements. Split blacklist code out into a separate 7995 file. Move checking the blacklist to very early. Previously, we 7996 would use ACPI tables, and then halfway through init, check the 7997 blacklist -- too late. Now, it's early enough to completely fall- 7998 back to non-ACPI. 7999 8000 8001 3) iASL Compiler/Disassembler version 20020918: 8002 8003 Fixed a problem where the typechecking code didn't know that an 8004 alias could point to a method. In other words, aliases were not 8005 being dereferenced during typechecking. 8006 8007 8008 ---------------------------------------- 8009 29 August 2002. Summary of changes for this release. 8010 8011 1) ACPI CA Core Subsystem Version 20020829: 8012 8013 If the target of a Scope() operator already exists, it must be an 8014 object type that actually opens a scope -- such as a Device, 8015 Method, Scope, etc. This is a fatal runtime error. Similar error 8016 check has been added to the iASL compiler also. 8017 8018 Tightened up the namespace load to disallow multiple names in the 8019 same scope. This previously was allowed if both objects were of 8020 the same type. (i.e., a lookup was the same as entering a new 8021 name). 8022 8023 8024 2) Linux 8025 8026 Ensure that the ACPI interrupt has the proper trigger and 8027 polarity. 8028 8029 local_irq_disable is extraneous. (Matthew Wilcox) 8030 8031 Make "acpi=off" actually do what it says, and not use the ACPI 8032 interpreter *or* the tables. 8033 8034 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 8035 Takayoshi) 8036 8037 8038 3) iASL Compiler/Disassembler Version 20020829: 8039 8040 Implemented namepath optimization for name declarations. For 8041 example, a declaration like "Method (\_SB_.ABCD)" would get 8042 optimized to "Method (ABCD)" if the declaration is within the 8043 \_SB_ scope. This optimization is in addition to the named 8044 reference path optimization first released in the previous 8045 version. This would seem to complete all possible optimizations 8046 for namepaths within the ASL/AML. 8047 8048 If the target of a Scope() operator already exists, it must be an 8049 object type that actually opens a scope -- such as a Device, 8050 Method, Scope, etc. 8051 8052 Implemented a check and warning for unreachable code in the same 8053 block below a Return() statement. 8054 8055 Fixed a problem where the listing file was not generated if the 8056 compiler aborted if the maximum error count was exceeded (200). 8057 8058 Fixed a problem where the typechecking of method return values was 8059 broken. This includes the check for a return value when the 8060 method is invoked as a TermArg (a return value is expected.) 8061 8062 Fixed a reported problem where EOF conditions during a quoted 8063 string or comment caused a fault. 8064 8065 8066 ---------------------------------------- 8067 15 August 2002. Summary of changes for this release. 8068 8069 1) ACPI CA Core Subsystem Version 20020815: 8070 8071 Fixed a reported problem where a Store to a method argument that 8072 contains a reference did not perform the indirect store correctly. 8073 This problem was created during the conversion to the new 8074 reference object model - the indirect store to a method argument 8075 code was not updated to reflect the new model. 8076 8077 Reworked the ACPI mode change code to better conform to ACPI 2.0, 8078 handle corner cases, and improve code legibility (Kochi Takayoshi) 8079 8080 Fixed a problem with the pathname parsing for the carat (^) 8081 prefix. The heavy use of the carat operator by the new namepath 8082 optimization in the iASL compiler uncovered a problem with the AML 8083 interpreter handling of this prefix. In the case where one or 8084 more carats precede a single nameseg, the nameseg was treated as 8085 standalone and the search rule (to root) was inadvertently 8086 applied. This could cause both the iASL compiler and the 8087 interpreter to find the wrong object or to miss the error that 8088 should occur if the object does not exist at that exact pathname. 8089 8090 Found and fixed the problem where the HP Pavilion DSDT would not 8091 load. This was a relatively minor tweak to the table loading code 8092 (a problem caused by the unexpected encounter with a method 8093 invocation not within a control method), but it does not solve the 8094 overall issue of the execution of AML code at the table level. 8095 This investigation is still ongoing. 8096 8097 Code and Data Size: Current core subsystem library sizes are shown 8098 below. These are the code and data sizes for the acpica.lib 8099 produced by the Microsoft Visual C++ 6.0 compiler, and these 8100 values do not include any ACPI driver or OSPM code. The debug 8101 version of the code includes the debug output trace mechanism and 8102 has a larger code and data size. Note that these values will vary 8103 depending on the efficiency of the compiler and the compiler 8104 options used during generation. 8105 8106 Previous Release 8107 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 8108 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 8109 Current Release: 8110 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 8111 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 8112 8113 8114 2) Linux 8115 8116 Remove redundant slab.h include (Brad Hards) 8117 8118 Fix several bugs in thermal.c (Herbert Nachtnebel) 8119 8120 Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 8121 8122 Change acpi_system_suspend to use updated irq functions (Pavel 8123 Machek) 8124 8125 Export acpi_get_firmware_table (Matthew Wilcox) 8126 8127 Use proper root proc entry for ACPI (Kochi Takayoshi) 8128 8129 Fix early-boot table parsing (Bjorn Helgaas) 8130 8131 8132 3) iASL Compiler/Disassembler 8133 8134 Reworked the compiler options to make them more consistent and to 8135 use two-letter options where appropriate. We were running out of 8136 sensible letters. This may break some makefiles, so check the 8137 current options list by invoking the compiler with no parameters. 8138 8139 Completed the design and implementation of the ASL namepath 8140 optimization option for the compiler. This option optimizes all 8141 references to named objects to the shortest possible path. The 8142 first attempt tries to utilize a single nameseg (4 characters) and 8143 the "search-to-root" algorithm used by the interpreter. If that 8144 cannot be used (because either the name is not in the search path 8145 or there is a conflict with another object with the same name), 8146 the pathname is optimized using the carat prefix (usually a 8147 shorter string than specifying the entire path from the root.) 8148 8149 Implemented support to obtain the DSDT from the Windows registry 8150 (when the disassembly option is specified with no input file). 8151 Added this code as the implementation for AcpiOsTableOverride in 8152 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 8153 utility) to scan memory for the DSDT to the AcpiOsTableOverride 8154 function in the DOS OSL to make the disassembler truly OS 8155 independent. 8156 8157 Implemented a new option to disassemble and compile in one step. 8158 When used without an input filename, this option will grab the 8159 DSDT from the local machine, disassemble it, and compile it in one 8160 step. 8161 8162 Added a warning message for invalid escapes (a backslash followed 8163 by any character other than the allowable escapes). This catches 8164 the quoted string error "\_SB_" (which should be "\\_SB_" ). 8165 8166 Also, there are numerous instances in the ACPI specification where 8167 this error occurs. 8168 8169 Added a compiler option to disable all optimizations. This is 8170 basically the "compatibility mode" because by using this option, 8171 the AML code will come out exactly the same as other ASL 8172 compilers. 8173 8174 Added error messages for incorrectly ordered dependent resource 8175 functions. This includes: missing EndDependentFn macro at end of 8176 dependent resource list, nested dependent function macros (both 8177 start and end), and missing StartDependentFn macro. These are 8178 common errors that should be caught at compile time. 8179 8180 Implemented _OSI support for the disassembler and compiler. _OSI 8181 must be included in the namespace for proper disassembly (because 8182 the disassembler must know the number of arguments.) 8183 8184 Added an "optimization" message type that is optional (off by 8185 default). This message is used for all optimizations - including 8186 constant folding, integer optimization, and namepath optimization. 8187 8188 ---------------------------------------- 8189 25 July 2002. Summary of changes for this release. 8190 8191 8192 1) ACPI CA Core Subsystem Version 20020725: 8193 8194 The AML Disassembler has been enhanced to produce compilable ASL 8195 code and has been integrated into the iASL compiler (see below) as 8196 well as the single-step disassembly for the AML debugger and the 8197 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 8198 resource templates and macros are fully supported. The 8199 disassembler has been tested on over 30 different AML files, 8200 producing identical AML when the resulting disassembled ASL file 8201 is recompiled with the same ASL compiler. 8202 8203 Modified the Resource Manager to allow zero interrupts and zero 8204 dma channels during the GetCurrentResources call. This was 8205 causing problems on some platforms. 8206 8207 Added the AcpiOsRedirectOutput interface to the OSL to simplify 8208 output redirection for the AcpiOsPrintf and AcpiOsVprintf 8209 interfaces. 8210 8211 Code and Data Size: Current core subsystem library sizes are shown 8212 below. These are the code and data sizes for the acpica.lib 8213 produced by the Microsoft Visual C++ 6.0 compiler, and these 8214 values do not include any ACPI driver or OSPM code. The debug 8215 version of the code includes the debug output trace mechanism and 8216 has a larger code and data size. Note that these values will vary 8217 depending on the efficiency of the compiler and the compiler 8218 options used during generation. 8219 8220 Previous Release 8221 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 8222 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 8223 Current Release: 8224 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 8225 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 8226 8227 8228 2) Linux 8229 8230 Fixed a panic in the EC driver (Dominik Brodowski) 8231 8232 Implemented checksum of the R/XSDT itself during Linux table scan 8233 (Richard Schaal) 8234 8235 8236 3) iASL compiler 8237 8238 The AML disassembler is integrated into the compiler. The "-d" 8239 option invokes the disassembler to completely disassemble an 8240 input AML file, producing as output a text ASL file with the 8241 extension ".dsl" (to avoid name collisions with existing .asl 8242 source files.) A future enhancement will allow the disassembler 8243 to obtain the BIOS DSDT from the registry under Windows. 8244 8245 Fixed a problem with the VendorShort and VendorLong resource 8246 descriptors where an invalid AML sequence was created. 8247 8248 Implemented a fix for BufferData term in the ASL parser. It was 8249 inadvertently defined twice, allowing invalid syntax to pass and 8250 causing reduction conflicts. 8251 8252 Fixed a problem where the Ones opcode could get converted to a 8253 value of zero if "Ones" was used where a byte, word or dword value 8254 was expected. The 64-bit value is now truncated to the correct 8255 size with the correct value. 8256 8257 8258 8259 ---------------------------------------- 8260 02 July 2002. Summary of changes for this release. 8261 8262 8263 1) ACPI CA Core Subsystem Version 20020702: 8264 8265 The Table Manager code has been restructured to add several new 8266 features. Tables that are not required by the core subsystem 8267 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 8268 validated in any way and are returned from AcpiGetFirmwareTable if 8269 requested. The AcpiOsTableOverride interface is now called for 8270 each table that is loaded by the subsystem in order to allow the 8271 host to override any table it chooses. Previously, only the DSDT 8272 could be overridden. Added one new files, tbrsdt.c and 8273 tbgetall.c. 8274 8275 Fixed a problem with the conversion of internal package objects to 8276 external objects (when a package is returned from a control 8277 method.) The return buffer length was set to zero instead of the 8278 proper length of the package object. 8279 8280 Fixed a reported problem with the use of the RefOf and DeRefOf 8281 operators when passing reference arguments to control methods. A 8282 new type of Reference object is used internally for references 8283 produced by the RefOf operator. 8284 8285 Added additional error messages in the Resource Manager to explain 8286 AE_BAD_DATA errors when they occur during resource parsing. 8287 8288 Split the AcpiEnableSubsystem into two primitives to enable a 8289 finer granularity initialization sequence. These two calls should 8290 be called in this order: AcpiEnableSubsystem (flags), 8291 AcpiInitializeObjects (flags). The flags parameter remains the 8292 same. 8293 8294 8295 2) Linux 8296 8297 Updated the ACPI utilities module to understand the new style of 8298 fully resolved package objects that are now returned from the core 8299 subsystem. This eliminates errors of the form: 8300 8301 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 8302 acpi_utils-0430 [145] acpi_evaluate_reference: 8303 Invalid element in package (not a device reference) 8304 8305 The method evaluation utility uses the new buffer allocation 8306 scheme instead of calling AcpiEvaluate Object twice. 8307 8308 Added support for ECDT. This allows the use of the Embedded 8309 8310 Controller before the namespace has been fully initialized, which 8311 is necessary for ACPI 2.0 support, and for some laptops to 8312 initialize properly. (Laptops using ECDT are still rare, so only 8313 limited testing was performed of the added functionality.) 8314 8315 Fixed memory leaks in the EC driver. 8316 8317 Eliminated a brittle code structure in acpi_bus_init(). 8318 8319 Eliminated the acpi_evaluate() helper function in utils.c. It is 8320 no longer needed since acpi_evaluate_object can optionally 8321 allocate memory for the return object. 8322 8323 Implemented fix for keyboard hang when getting battery readings on 8324 some systems (Stephen White) 8325 8326 PCI IRQ routing update (Dominik Brodowski) 8327 8328 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 8329 support 8330 8331 ---------------------------------------- 8332 11 June 2002. Summary of changes for this release. 8333 8334 8335 1) ACPI CA Core Subsystem Version 20020611: 8336 8337 Fixed a reported problem where constants such as Zero and One 8338 appearing within _PRT packages were not handled correctly within 8339 the resource manager code. Originally reported against the ASL 8340 compiler because the code generator now optimizes integers to 8341 their minimal AML representation (i.e. AML constants if possible.) 8342 The _PRT code now handles all AML constant opcodes correctly 8343 (Zero, One, Ones, Revision). 8344 8345 Fixed a problem with the Concatenate operator in the AML 8346 interpreter where a buffer result object was incorrectly marked as 8347 not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 8348 8349 All package sub-objects are now fully resolved before they are 8350 returned from the external ACPI interfaces. This means that name 8351 strings are resolved to object handles, and constant operators 8352 (Zero, One, Ones, Revision) are resolved to Integers. 8353 8354 Implemented immediate resolution of the AML Constant opcodes 8355 (Zero, One, Ones, Revision) to Integer objects upon detection 8356 within the AML stream. This has simplified and reduced the 8357 generated code size of the subsystem by eliminating about 10 8358 switch statements for these constants (which previously were 8359 contained in Reference objects.) The complicating issues are that 8360 the Zero opcode is used as a "placeholder" for unspecified 8361 optional target operands and stores to constants are defined to be 8362 no-ops. 8363 8364 Code and Data Size: Current core subsystem library sizes are shown 8365 below. These are the code and data sizes for the acpica.lib 8366 produced by the Microsoft Visual C++ 6.0 compiler, and these 8367 values do not include any ACPI driver or OSPM code. The debug 8368 version of the code includes the debug output trace mechanism and 8369 has a larger code and data size. Note that these values will vary 8370 depending on the efficiency of the compiler and the compiler 8371 options used during generation. 8372 8373 Previous Release 8374 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 8375 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 8376 Current Release: 8377 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 8378 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 8379 8380 8381 2) Linux 8382 8383 8384 Added preliminary support for obtaining _TRA data for PCI root 8385 bridges (Bjorn Helgaas). 8386 8387 8388 3) iASL Compiler Version X2046: 8389 8390 Fixed a problem where the "_DDN" reserved name was defined to be a 8391 control method with one argument. There are no arguments, and 8392 _DDN does not have to be a control method. 8393 8394 Fixed a problem with the Linux version of the compiler where the 8395 source lines printed with error messages were the wrong lines. 8396 This turned out to be the "LF versus CR/LF" difference between 8397 Windows and Unix. This appears to be the longstanding issue 8398 concerning listing output and error messages. 8399 8400 Fixed a problem with the Linux version of compiler where opcode 8401 names within error messages were wrong. This was caused by a 8402 slight difference in the output of the Flex tool on Linux versus 8403 Windows. 8404 8405 Fixed a problem with the Linux compiler where the hex output files 8406 contained some garbage data caused by an internal buffer overrun. 8407 8408 8409 ---------------------------------------- 8410 17 May 2002. Summary of changes for this release. 8411 8412 8413 1) ACPI CA Core Subsystem Version 20020517: 8414 8415 Implemented a workaround to an BIOS bug discovered on the HP 8416 OmniBook where the FADT revision number and the table size are 8417 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 8418 behavior is to fallback to using only the ACPI 1.0 fields of the 8419 FADT if the table is too small to be a ACPI 2.0 table as claimed 8420 by the revision number. Although this is a BIOS bug, this is a 8421 case where the workaround is simple enough and with no side 8422 effects, so it seemed prudent to add it. A warning message is 8423 issued, however. 8424 8425 Implemented minimum size checks for the fixed-length ACPI tables - 8426 - the FADT and FACS, as well as consistency checks between the 8427 revision number and the table size. 8428 8429 Fixed a reported problem in the table override support where the 8430 new table pointer was incorrectly treated as a physical address 8431 instead of a logical address. 8432 8433 Eliminated the use of the AE_AML_ERROR exception and replaced it 8434 with more descriptive codes. 8435 8436 Fixed a problem where an exception would occur if an ASL Field was 8437 defined with no named Field Units underneath it (used by some 8438 index fields). 8439 8440 Code and Data Size: Current core subsystem library sizes are shown 8441 below. These are the code and data sizes for the acpica.lib 8442 produced by the Microsoft Visual C++ 6.0 compiler, and these 8443 values do not include any ACPI driver or OSPM code. The debug 8444 version of the code includes the debug output trace mechanism and 8445 has a larger code and data size. Note that these values will vary 8446 depending on the efficiency of the compiler and the compiler 8447 options used during generation. 8448 8449 Previous Release 8450 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 8451 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 8452 Current Release: 8453 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 8454 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 8455 8456 8457 8458 2) Linux 8459 8460 Much work done on ACPI init (MADT and PCI IRQ routing support). 8461 (Paul D. and Dominik Brodowski) 8462 8463 Fix PCI IRQ-related panic on boot (Sam Revitch) 8464 8465 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 8466 8467 Fix "MHz" typo (Dominik Brodowski) 8468 8469 Fix RTC year 2000 issue (Dominik Brodowski) 8470 8471 Preclude multiple button proc entries (Eric Brunet) 8472 8473 Moved arch-specific code out of include/platform/aclinux.h 8474 8475 3) iASL Compiler Version X2044: 8476 8477 Implemented error checking for the string used in the EISAID macro 8478 (Usually used in the definition of the _HID object.) The code now 8479 strictly enforces the PnP format - exactly 7 characters, 3 8480 uppercase letters and 4 hex digits. 8481 8482 If a raw string is used in the definition of the _HID object 8483 (instead of the EISAID macro), the string must contain all 8484 alphanumeric characters (e.g., "*PNP0011" is not allowed because 8485 of the asterisk.) 8486 8487 Implemented checking for invalid use of ACPI reserved names for 8488 most of the name creation operators (Name, Device, Event, Mutex, 8489 OperationRegion, PowerResource, Processor, and ThermalZone.) 8490 Previously, this check was only performed for control methods. 8491 8492 Implemented an additional check on the Name operator to emit an 8493 error if a reserved name that must be implemented in ASL as a 8494 control method is used. We know that a reserved name must be a 8495 method if it is defined with input arguments. 8496 8497 The warning emitted when a namespace object reference is not found 8498 during the cross reference phase has been changed into an error. 8499 The "External" directive should be used for names defined in other 8500 modules. 8501 8502 8503 4) Tools and Utilities 8504 8505 The 16-bit tools (adump16 and aexec16) have been regenerated and 8506 tested. 8507 8508 Fixed a problem with the output of both acpidump and adump16 where 8509 the indentation of closing parentheses and brackets was not 8510 8511 aligned properly with the parent block. 8512 8513 8514 ---------------------------------------- 8515 03 May 2002. Summary of changes for this release. 8516 8517 8518 1) ACPI CA Core Subsystem Version 20020503: 8519 8520 Added support a new OSL interface that allows the host operating 8521 8522 system software to override the DSDT found in the firmware - 8523 AcpiOsTableOverride. With this interface, the OSL can examine the 8524 version of the firmware DSDT and replace it with a different one 8525 if desired. 8526 8527 Added new external interfaces for accessing ACPI registers from 8528 device drivers and other system software - AcpiGetRegister and 8529 AcpiSetRegister. This was simply an externalization of the 8530 existing AcpiHwBitRegister interfaces. 8531 8532 Fixed a regression introduced in the previous build where the 8533 ASL/AML CreateField operator always returned an error, 8534 "destination must be a NS Node". 8535 8536 Extended the maximum time (before failure) to successfully enable 8537 ACPI mode to 3 seconds. 8538 8539 Code and Data Size: Current core subsystem library sizes are shown 8540 below. These are the code and data sizes for the acpica.lib 8541 produced by the Microsoft Visual C++ 6.0 compiler, and these 8542 values do not include any ACPI driver or OSPM code. The debug 8543 version of the code includes the debug output trace mechanism and 8544 has a larger code and data size. Note that these values will vary 8545 depending on the efficiency of the compiler and the compiler 8546 options used during generation. 8547 8548 Previous Release 8549 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 8550 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 8551 Current Release: 8552 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 8553 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 8554 8555 8556 2) Linux 8557 8558 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 8559 free. While 3 out of 4 of our in-house systems work fine, the last 8560 one still hangs when testing the LAPIC timer. 8561 8562 Renamed many files in 2.5 kernel release to omit "acpi_" from the 8563 name. 8564 8565 Added warning on boot for Presario 711FR. 8566 8567 Sleep improvements (Pavel Machek) 8568 8569 ACPI can now be built without CONFIG_PCI enabled. 8570 8571 IA64: Fixed memory map functions (JI Lee) 8572 8573 8574 3) iASL Compiler Version X2043: 8575 8576 Added support to allow the compiler to be integrated into the MS 8577 VC++ development environment for one-button compilation of single 8578 files or entire projects -- with error-to-source-line mapping. 8579 8580 Implemented support for compile-time constant folding for the 8581 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 8582 specification. This allows the ASL writer to use expressions 8583 instead of Integer/Buffer/String constants in terms that must 8584 evaluate to constants at compile time and will also simplify the 8585 emitted AML in any such sub-expressions that can be folded 8586 (evaluated at compile-time.) This increases the size of the 8587 compiler significantly because a portion of the ACPI CA AML 8588 interpreter is included within the compiler in order to pre- 8589 evaluate constant expressions. 8590 8591 8592 Fixed a problem with the "Unicode" ASL macro that caused the 8593 compiler to fault. (This macro is used in conjunction with the 8594 _STR reserved name.) 8595 8596 Implemented an AML opcode optimization to use the Zero, One, and 8597 Ones opcodes where possible to further reduce the size of integer 8598 constants and thus reduce the overall size of the generated AML 8599 code. 8600 8601 Implemented error checking for new reserved terms for ACPI version 8602 2.0A. 8603 8604 Implemented the -qr option to display the current list of ACPI 8605 reserved names known to the compiler. 8606 8607 Implemented the -qc option to display the current list of ASL 8608 operators that are allowed within constant expressions and can 8609 therefore be folded at compile time if the operands are constants. 8610 8611 8612 4) Documentation 8613 8614 Updated the Programmer's Reference for new interfaces, data types, 8615 and memory allocation model options. 8616 8617 Updated the iASL Compiler User Reference to apply new format and 8618 add information about new features and options. 8619 8620 ---------------------------------------- 8621 19 April 2002. Summary of changes for this release. 8622 8623 1) ACPI CA Core Subsystem Version 20020419: 8624 8625 The source code base for the Core Subsystem has been completely 8626 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 8627 versions. The Lint option files used are included in the 8628 /acpi/generate/lint directory. 8629 8630 Implemented enhanced status/error checking across the entire 8631 Hardware manager subsystem. Any hardware errors (reported from 8632 the OSL) are now bubbled up and will abort a running control 8633 method. 8634 8635 8636 Fixed a problem where the per-ACPI-table integer width (32 or 64) 8637 was stored only with control method nodes, causing a fault when 8638 non-control method code was executed during table loading. The 8639 solution implemented uses a global variable to indicate table 8640 width across the entire ACPI subsystem. Therefore, ACPI CA does 8641 not support mixed integer widths across different ACPI tables 8642 (DSDT, SSDT). 8643 8644 Fixed a problem where NULL extended fields (X fields) in an ACPI 8645 2.0 ACPI FADT caused the table load to fail. Although the 8646 existing ACPI specification is a bit fuzzy on this topic, the new 8647 behavior is to fall back on a ACPI 1.0 field if the corresponding 8648 ACPI 2.0 X field is zero (even though the table revision indicates 8649 a full ACPI 2.0 table.) The ACPI specification will be updated to 8650 clarify this issue. 8651 8652 Fixed a problem with the SystemMemory operation region handler 8653 where memory was always accessed byte-wise even if the AML- 8654 specified access width was larger than a byte. This caused 8655 problems on systems with memory-mapped I/O. Memory is now 8656 accessed with the width specified. On systems that do not support 8657 non-aligned transfers, a check is made to guarantee proper address 8658 alignment before proceeding in order to avoid an AML-caused 8659 alignment fault within the kernel. 8660 8661 8662 Fixed a problem with the ExtendedIrq resource where only one byte 8663 of the 4-byte Irq field was extracted. 8664 8665 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 8666 function was out of date and required a rewrite. 8667 8668 Code and Data Size: Current core subsystem library sizes are shown 8669 below. These are the code and data sizes for the acpica.lib 8670 produced by the Microsoft Visual C++ 6.0 compiler, and these 8671 values do not include any ACPI driver or OSPM code. The debug 8672 version of the code includes the debug output trace mechanism and 8673 has a larger code and data size. Note that these values will vary 8674 depending on the efficiency of the compiler and the compiler 8675 options used during generation. 8676 8677 Previous Release 8678 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 8679 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 8680 Current Release: 8681 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 8682 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 8683 8684 8685 2) Linux 8686 8687 PCI IRQ routing fixes (Dominik Brodowski) 8688 8689 8690 3) iASL Compiler Version X2042: 8691 8692 Implemented an additional compile-time error check for a field 8693 unit whose size + minimum access width would cause a run-time 8694 access beyond the end-of-region. Previously, only the field size 8695 itself was checked. 8696 8697 The Core subsystem and iASL compiler now share a common parse 8698 object in preparation for compile-time evaluation of the type 8699 3/4/5 ASL operators. 8700 8701 8702 ---------------------------------------- 8703 Summary of changes for this release: 03_29_02 8704 8705 1) ACPI CA Core Subsystem Version 20020329: 8706 8707 Implemented support for late evaluation of TermArg operands to 8708 Buffer and Package objects. This allows complex expressions to be 8709 used in the declarations of these object types. 8710 8711 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 8712 1.0, if the field was larger than 32 bits, it was returned as a 8713 buffer - otherwise it was returned as an integer. In ACPI 2.0, 8714 the field is returned as a buffer only if the field is larger than 8715 64 bits. The TableRevision is now considered when making this 8716 conversion to avoid incompatibility with existing ASL code. 8717 8718 Implemented logical addressing for AcpiOsGetRootPointer. This 8719 allows an RSDP with either a logical or physical address. With 8720 this support, the host OS can now override all ACPI tables with 8721 one logical RSDP. Includes implementation of "typed" pointer 8722 support to allow a common data type for both physical and logical 8723 pointers internally. This required a change to the 8724 AcpiOsGetRootPointer interface. 8725 8726 Implemented the use of ACPI 2.0 Generic Address Structures for all 8727 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 8728 mapped I/O for these ACPI features. 8729 8730 Initialization now ignores not only non-required tables (All 8731 tables other than the FADT, FACS, DSDT, and SSDTs), but also does 8732 not validate the table headers of unrecognized tables. 8733 8734 Fixed a problem where a notify handler could only be 8735 installed/removed on an object of type Device. All "notify" 8736 8737 objects are now supported -- Devices, Processor, Power, and 8738 Thermal. 8739 8740 Removed most verbosity from the ACPI_DB_INFO debug level. Only 8741 critical information is returned when this debug level is enabled. 8742 8743 Code and Data Size: Current core subsystem library sizes are shown 8744 below. These are the code and data sizes for the acpica.lib 8745 produced by the Microsoft Visual C++ 6.0 compiler, and these 8746 values do not include any ACPI driver or OSPM code. The debug 8747 version of the code includes the debug output trace mechanism and 8748 has a larger code and data size. Note that these values will vary 8749 depending on the efficiency of the compiler and the compiler 8750 options used during generation. 8751 8752 Previous Release 8753 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 8754 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 8755 Current Release: 8756 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 8757 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 8758 8759 8760 2) Linux: 8761 8762 The processor driver (acpi_processor.c) now fully supports ACPI 8763 2.0-based processor performance control (e.g. Intel(R) 8764 SpeedStep(TM) technology) Note that older laptops that only have 8765 the Intel "applet" interface are not supported through this. The 8766 'limit' and 'performance' interface (/proc) are fully functional. 8767 [Note that basic policy for controlling performance state 8768 transitions will be included in the next version of ospmd.] The 8769 idle handler was modified to more aggressively use C2, and PIIX4 8770 errata handling underwent a complete overhaul (big thanks to 8771 Dominik Brodowski). 8772 8773 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 8774 based devices in the ACPI namespace are now dynamically bound 8775 (associated) with their PCI counterparts (e.g. PCI1->01:00.0). 8776 This allows, among other things, ACPI to resolve bus numbers for 8777 subordinate PCI bridges. 8778 8779 Enhanced PCI IRQ routing to get the proper bus number for _PRT 8780 entries defined underneath PCI bridges. 8781 8782 Added IBM 600E to bad bios list due to invalid _ADR value for 8783 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 8784 8785 In the process of adding full MADT support (e.g. IOAPIC) for IA32 8786 (acpi.c, mpparse.c) -- stay tuned. 8787 8788 Added back visual differentiation between fixed-feature and 8789 control-method buttons in dmesg. Buttons are also subtyped (e.g. 8790 button/power/PWRF) to simplify button identification. 8791 8792 We no longer use -Wno-unused when compiling debug. Please ignore 8793 any "_THIS_MODULE defined but not used" messages. 8794 8795 Can now shut down the system using "magic sysrq" key. 8796 8797 8798 3) iASL Compiler version 2041: 8799 8800 Fixed a problem where conversion errors for hex/octal/decimal 8801 constants were not reported. 8802 8803 Implemented a fix for the General Register template Address field. 8804 This field was 8 bits when it should be 64. 8805 8806 Fixed a problem where errors/warnings were no longer being emitted 8807 within the listing output file. 8808 8809 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 8810 exactly 4 characters, alphanumeric only. 8811 8812 8813 8814 8815 ---------------------------------------- 8816 Summary of changes for this release: 03_08_02 8817 8818 8819 1) ACPI CA Core Subsystem Version 20020308: 8820 8821 Fixed a problem with AML Fields where the use of the "AccessAny" 8822 keyword could cause an interpreter error due to attempting to read 8823 or write beyond the end of the parent Operation Region. 8824 8825 Fixed a problem in the SystemMemory Operation Region handler where 8826 an attempt was made to map memory beyond the end of the region. 8827 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 8828 errors on some Linux systems. 8829 8830 Fixed a problem where the interpreter/namespace "search to root" 8831 algorithm was not functioning for some object types. Relaxed the 8832 internal restriction on the search to allow upsearches for all 8833 external object types as well as most internal types. 8834 8835 8836 2) Linux: 8837 8838 We now use safe_halt() macro versus individual calls to sti | hlt. 8839 8840 Writing to the processor limit interface should now work. "echo 1" 8841 will increase the limit, 2 will decrease, and 0 will reset to the 8842 8843 default. 8844 8845 8846 3) ASL compiler: 8847 8848 Fixed segfault on Linux version. 8849 8850 8851 ---------------------------------------- 8852 Summary of changes for this release: 02_25_02 8853 8854 1) ACPI CA Core Subsystem: 8855 8856 8857 Fixed a problem where the GPE bit masks were not initialized 8858 properly, causing erratic GPE behavior. 8859 8860 Implemented limited support for multiple calling conventions. The 8861 code can be generated with either the VPL (variable parameter 8862 list, or "C") convention, or the FPL (fixed parameter list, or 8863 "Pascal") convention. The core subsystem is about 3.4% smaller 8864 when generated with FPL. 8865 8866 8867 2) Linux 8868 8869 Re-add some /proc/acpi/event functionality that was lost during 8870 the rewrite 8871 8872 Resolved issue with /proc events for fixed-feature buttons showing 8873 up as the system device. 8874 8875 Fixed checks on C2/C3 latencies to be inclusive of maximum values. 8876 8877 Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 8878 8879 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 8880 8881 Fixed limit interface & usage to fix bugs with passive cooling 8882 hysterisis. 8883 8884 Restructured PRT support. 8885 8886 8887 ---------------------------------------- 8888 Summary of changes for this label: 02_14_02 8889 8890 8891 1) ACPI CA Core Subsystem: 8892 8893 Implemented support in AcpiLoadTable to allow loading of FACS and 8894 FADT tables. 8895 8896 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 8897 been removed. All 64-bit platforms should be migrated to the ACPI 8898 2.0 tables. The actbl71.h header has been removed from the source 8899 tree. 8900 8901 All C macros defined within the subsystem have been prefixed with 8902 "ACPI_" to avoid collision with other system include files. 8903 8904 Removed the return value for the two AcpiOsPrint interfaces, since 8905 it is never used and causes lint warnings for ignoring the return 8906 value. 8907 8908 Added error checking to all internal mutex acquire and release 8909 calls. Although a failure from one of these interfaces is 8910 probably a fatal system error, these checks will cause the 8911 immediate abort of the currently executing method or interface. 8912 8913 Fixed a problem where the AcpiSetCurrentResources interface could 8914 fault. This was a side effect of the deployment of the new memory 8915 allocation model. 8916 8917 Fixed a couple of problems with the Global Lock support introduced 8918 in the last major build. The "common" (1.0/2.0) internal FACS was 8919 being overwritten with the FACS signature and clobbering the 8920 Global Lock pointer. Also, the actual firmware FACS was being 8921 unmapped after construction of the "common" FACS, preventing 8922 access to the actual Global Lock field within it. The "common" 8923 internal FACS is no longer installed as an actual ACPI table; it 8924 is used simply as a global. 8925 8926 Code and Data Size: Current core subsystem library sizes are shown 8927 below. These are the code and data sizes for the acpica.lib 8928 produced by the Microsoft Visual C++ 6.0 compiler, and these 8929 values do not include any ACPI driver or OSPM code. The debug 8930 version of the code includes the debug output trace mechanism and 8931 has a larger code and data size. Note that these values will vary 8932 depending on the efficiency of the compiler and the compiler 8933 options used during generation. 8934 8935 Previous Release (02_07_01) 8936 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 8937 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 8938 Current Release: 8939 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 8940 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 8941 8942 8943 2) Linux 8944 8945 Updated Linux-specific code for core macro and OSL interface 8946 changes described above. 8947 8948 Improved /proc/acpi/event. It now can be opened only once and has 8949 proper poll functionality. 8950 8951 Fixed and restructured power management (acpi_bus). 8952 8953 Only create /proc "view by type" when devices of that class exist. 8954 8955 Fixed "charging/discharging" bug (and others) in acpi_battery. 8956 8957 Improved thermal zone code. 8958 8959 8960 3) ASL Compiler, version X2039: 8961 8962 8963 Implemented the new compiler restriction on ASL String hex/octal 8964 escapes to non-null, ASCII values. An error results if an invalid 8965 value is used. (This will require an ACPI 2.0 specification 8966 change.) 8967 8968 AML object labels that are output to the optional C and ASM source 8969 are now prefixed with both the ACPI table signature and table ID 8970 to help guarantee uniqueness within a large BIOS project. 8971 8972 8973 ---------------------------------------- 8974 Summary of changes for this label: 02_01_02 8975 8976 1) ACPI CA Core Subsystem: 8977 8978 ACPI 2.0 support is complete in the entire Core Subsystem and the 8979 ASL compiler. All new ACPI 2.0 operators are implemented and all 8980 other changes for ACPI 2.0 support are complete. With 8981 simultaneous code and data optimizations throughout the subsystem, 8982 ACPI 2.0 support has been implemented with almost no additional 8983 cost in terms of code and data size. 8984 8985 Implemented a new mechanism for allocation of return buffers. If 8986 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 8987 be allocated on behalf of the caller. Consolidated all return 8988 buffer validation and allocation to a common procedure. Return 8989 buffers will be allocated via the primary OSL allocation interface 8990 since it appears that a separate pool is not needed by most users. 8991 If a separate pool is required for these buffers, the caller can 8992 still use the original mechanism and pre-allocate the buffer(s). 8993 8994 Implemented support for string operands within the DerefOf 8995 operator. 8996 8997 Restructured the Hardware and Event managers to be table driven, 8998 simplifying the source code and reducing the amount of generated 8999 code. 9000 9001 Split the common read/write low-level ACPI register bitfield 9002 procedure into a separate read and write, simplifying the code 9003 considerably. 9004 9005 Obsoleted the AcpiOsCallocate OSL interface. This interface was 9006 used only a handful of times and didn't have enough critical mass 9007 for a separate interface. Replaced with a common calloc procedure 9008 in the core. 9009 9010 Fixed a reported problem with the GPE number mapping mechanism 9011 that allows GPE1 numbers to be non-contiguous with GPE0. 9012 Reorganized the GPE information and shrunk a large array that was 9013 originally large enough to hold info for all possible GPEs (256) 9014 to simply large enough to hold all GPEs up to the largest GPE 9015 number on the machine. 9016 9017 Fixed a reported problem with resource structure alignment on 64- 9018 bit platforms. 9019 9020 Changed the AcpiEnableEvent and AcpiDisableEvent external 9021 interfaces to not require any flags for the common case of 9022 enabling/disabling a GPE. 9023 9024 Implemented support to allow a "Notify" on a Processor object. 9025 9026 Most TBDs in comments within the source code have been resolved 9027 and eliminated. 9028 9029 9030 Fixed a problem in the interpreter where a standalone parent 9031 prefix (^) was not handled correctly in the interpreter and 9032 debugger. 9033 9034 Removed obsolete and unnecessary GPE save/restore code. 9035 9036 Implemented Field support in the ASL Load operator. This allows a 9037 table to be loaded from a named field, in addition to loading a 9038 table directly from an Operation Region. 9039 9040 Implemented timeout and handle support in the external Global Lock 9041 interfaces. 9042 9043 Fixed a problem in the AcpiDump utility where pathnames were no 9044 longer being generated correctly during the dump of named objects. 9045 9046 Modified the AML debugger to give a full display of if/while 9047 predicates instead of just one AML opcode at a time. (The 9048 predicate can have several nested ASL statements.) The old method 9049 was confusing during single stepping. 9050 9051 Code and Data Size: Current core subsystem library sizes are shown 9052 below. These are the code and data sizes for the acpica.lib 9053 produced by the Microsoft Visual C++ 6.0 compiler, and these 9054 values do not include any ACPI driver or OSPM code. The debug 9055 version of the code includes the debug output trace mechanism and 9056 has a larger code and data size. Note that these values will vary 9057 depending on the efficiency of the compiler and the compiler 9058 options used during generation. 9059 9060 Previous Release (12_18_01) 9061 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 9062 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 9063 Current Release: 9064 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 9065 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 9066 9067 2) Linux 9068 9069 Implemented fix for PIIX reverse throttling errata (Processor 9070 driver) 9071 9072 Added new Limit interface (Processor and Thermal drivers) 9073 9074 New thermal policy (Thermal driver) 9075 9076 Many updates to /proc 9077 9078 Battery "low" event support (Battery driver) 9079 9080 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 9081 9082 IA32 - IA64 initialization unification, no longer experimental 9083 9084 Menuconfig options redesigned 9085 9086 3) ASL Compiler, version X2037: 9087 9088 Implemented several new output features to simplify integration of 9089 AML code into firmware: 1) Output the AML in C source code with 9090 labels for each named ASL object. The original ASL source code 9091 is interleaved as C comments. 2) Output the AML in ASM source code 9092 with labels and interleaved ASL source. 3) Output the AML in 9093 raw hex table form, in either C or ASM. 9094 9095 Implemented support for optional string parameters to the 9096 LoadTable operator. 9097 9098 Completed support for embedded escape sequences within string 9099 literals. The compiler now supports all single character escapes 9100 as well as the Octal and Hex escapes. Note: the insertion of a 9101 null byte into a string literal (via the hex/octal escape) causes 9102 the string to be immediately terminated. A warning is issued. 9103 9104 Fixed a problem where incorrect AML was generated for the case 9105 where an ASL namepath consists of a single parent prefix ( 9106 9107 ) with no trailing name segments. 9108 9109 The compiler has been successfully generated with a 64-bit C 9110 compiler. 9111 9112 9113 9114 9115 ---------------------------------------- 9116 Summary of changes for this label: 12_18_01 9117 9118 1) Linux 9119 9120 Enhanced blacklist with reason and severity fields. Any table's 9121 signature may now be used to identify a blacklisted system. 9122 9123 Call _PIC control method to inform the firmware which interrupt 9124 model the OS is using. Turn on any disabled link devices. 9125 9126 Cleaned up busmgr /proc error handling (Andreas Dilger) 9127 9128 2) ACPI CA Core Subsystem: 9129 9130 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 9131 while loop) 9132 9133 Completed implementation of the ACPI 2.0 "Continue", 9134 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 9135 operators. All new ACPI 2.0 operators are now implemented in both 9136 the ASL compiler and the AML interpreter. The only remaining ACPI 9137 2.0 task is support for the String data type in the DerefOf 9138 operator. Fixed a problem with AcquireMutex where the status code 9139 was lost if the caller had to actually wait for the mutex. 9140 9141 Increased the maximum ASL Field size from 64K bits to 4G bits. 9142 9143 Completed implementation of the external Global Lock interfaces -- 9144 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 9145 Handler parameters were added. 9146 9147 Completed another pass at removing warnings and issues when 9148 compiling with 64-bit compilers. The code now compiles cleanly 9149 with the Intel 64-bit C/C++ compiler. Most notably, the pointer 9150 add and subtract (diff) macros have changed considerably. 9151 9152 9153 Created and deployed a new ACPI_SIZE type that is 64-bits wide on 9154 64-bit platforms, 32-bits on all others. This type is used 9155 wherever memory allocation and/or the C sizeof() operator is used, 9156 and affects the OSL memory allocation interfaces AcpiOsAllocate 9157 and AcpiOsCallocate. 9158 9159 Implemented sticky user breakpoints in the AML debugger. 9160 9161 Code and Data Size: Current core subsystem library sizes are shown 9162 below. These are the code and data sizes for the acpica.lib 9163 produced by the Microsoft Visual C++ 6.0 compiler, and these 9164 values do not include any ACPI driver or OSPM code. The debug 9165 version of the code includes the debug output trace mechanism and 9166 has a larger code and data size. Note that these values will vary 9167 depending on the efficiency of the compiler and the compiler 9168 options used during generation. 9169 9170 Previous Release (12_05_01) 9171 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 9172 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 9173 Current Release: 9174 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 9175 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 9176 9177 3) ASL Compiler, version X2034: 9178 9179 Now checks for (and generates an error if detected) the use of a 9180 Break or Continue statement without an enclosing While statement. 9181 9182 9183 Successfully generated the compiler with the Intel 64-bit C 9184 compiler. 9185 9186 ---------------------------------------- 9187 Summary of changes for this label: 12_05_01 9188 9189 1) ACPI CA Core Subsystem: 9190 9191 The ACPI 2.0 CopyObject operator is fully implemented. This 9192 operator creates a new copy of an object (and is also used to 9193 bypass the "implicit conversion" mechanism of the Store operator.) 9194 9195 The ACPI 2.0 semantics for the SizeOf operator are fully 9196 implemented. The change is that performing a SizeOf on a 9197 reference object causes an automatic dereference of the object to 9198 tha actual value before the size is evaluated. This behavior was 9199 undefined in ACPI 1.0. 9200 9201 The ACPI 2.0 semantics for the Extended IRQ resource descriptor 9202 have been implemented. The interrupt polarity and mode are now 9203 independently set. 9204 9205 Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 9206 appearing in Package objects were not properly converted to 9207 integers when the internal Package was converted to an external 9208 object (via the AcpiEvaluateObject interface.) 9209 9210 Fixed a problem with the namespace object deletion mechanism for 9211 objects created by control methods. There were two parts to this 9212 problem: 1) Objects created during the initialization phase method 9213 parse were not being deleted, and 2) The object owner ID mechanism 9214 to track objects was broken. 9215 9216 Fixed a problem where the use of the ASL Scope operator within a 9217 control method would result in an invalid opcode exception. 9218 9219 Fixed a problem introduced in the previous label where the buffer 9220 length required for the _PRT structure was not being returned 9221 correctly. 9222 9223 Code and Data Size: Current core subsystem library sizes are shown 9224 below. These are the code and data sizes for the acpica.lib 9225 produced by the Microsoft Visual C++ 6.0 compiler, and these 9226 values do not include any ACPI driver or OSPM code. The debug 9227 version of the code includes the debug output trace mechanism and 9228 has a larger code and data size. Note that these values will vary 9229 depending on the efficiency of the compiler and the compiler 9230 options used during generation. 9231 9232 Previous Release (11_20_01) 9233 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 9234 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 9235 9236 Current Release: 9237 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 9238 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 9239 9240 2) Linux: 9241 9242 Updated all files to apply cleanly against 2.4.16. 9243 9244 Added basic PCI Interrupt Routing Table (PRT) support for IA32 9245 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This 9246 version supports both static and dyanmic PRT entries, but dynamic 9247 entries are treated as if they were static (not yet 9248 reconfigurable). Architecture- specific code to use this data is 9249 absent on IA32 but should be available shortly. 9250 9251 Changed the initialization sequence to start the ACPI interpreter 9252 (acpi_init) prior to initialization of the PCI driver (pci_init) 9253 in init/main.c. This ordering is required to support PRT and 9254 facilitate other (future) enhancement. A side effect is that the 9255 ACPI bus driver and certain device drivers can no longer be loaded 9256 as modules. 9257 9258 Modified the 'make menuconfig' options to allow PCI Interrupt 9259 Routing support to be included without the ACPI Bus and other 9260 device drivers. 9261 9262 3) ASL Compiler, version X2033: 9263 9264 Fixed some issues with the use of the new CopyObject and 9265 DataTableRegion operators. Both are fully functional. 9266 9267 ---------------------------------------- 9268 Summary of changes for this label: 11_20_01 9269 9270 20 November 2001. Summary of changes for this release. 9271 9272 1) ACPI CA Core Subsystem: 9273 9274 Updated Index support to match ACPI 2.0 semantics. Storing a 9275 Integer, String, or Buffer to an Index of a Buffer will store only 9276 the least-significant byte of the source to the Indexed buffer 9277 byte. Multiple writes are not performed. 9278 9279 Fixed a problem where the access type used in an AccessAs ASL 9280 operator was not recorded correctly into the field object. 9281 9282 Fixed a problem where ASL Event objects were created in a 9283 signalled state. Events are now created in an unsignalled state. 9284 9285 The internal object cache is now purged after table loading and 9286 initialization to reduce the use of dynamic kernel memory -- on 9287 the assumption that object use is greatest during the parse phase 9288 of the entire table (versus the run-time use of individual control 9289 methods.) 9290 9291 ACPI 2.0 variable-length packages are now fully operational. 9292 9293 Code and Data Size: Code and Data optimizations have permitted new 9294 feature development with an actual reduction in the library size. 9295 Current core subsystem library sizes are shown below. These are 9296 the code and data sizes for the acpica.lib produced by the 9297 Microsoft Visual C++ 6.0 compiler, and these values do not include 9298 any ACPI driver or OSPM code. The debug version of the code 9299 includes the debug output trace mechanism and has a larger code 9300 and data size. Note that these values will vary depending on the 9301 efficiency of the compiler and the compiler options used during 9302 generation. 9303 9304 Previous Release (11_09_01): 9305 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 9306 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 9307 9308 Current Release: 9309 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 9310 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 9311 9312 2) Linux: 9313 9314 Enhanced the ACPI boot-time initialization code to allow the use 9315 of Local APIC tables for processor enumeration on IA-32, and to 9316 pave the way for a fully MPS-free boot (on SMP systems) in the 9317 near future. This functionality replaces 9318 arch/i386/kernel/acpitables.c, which was introduced in an earlier 9319 2.4.15-preX release. To enable this feature you must add 9320 "acpi_boot=on" to the kernel command line -- see the help entry 9321 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 9322 the works... 9323 9324 Restructured the configuration options to allow boot-time table 9325 parsing support without inclusion of the ACPI Interpreter (and 9326 other) code. 9327 9328 NOTE: This release does not include fixes for the reported events, 9329 power-down, and thermal passive cooling issues (coming soon). 9330 9331 3) ASL Compiler: 9332 9333 Added additional typechecking for Fields within restricted access 9334 Operation Regions. All fields within EC and CMOS regions must be 9335 declared with ByteAcc. All fields withing SMBus regions must be 9336 declared with the BufferAcc access type. 9337 9338 Fixed a problem where the listing file output of control methods 9339 no longer interleaved the actual AML code with the ASL source 9340 code. 9341 9342 9343 9344 9345 ---------------------------------------- 9346 Summary of changes for this label: 11_09_01 9347 9348 1) ACPI CA Core Subsystem: 9349 9350 Implemented ACPI 2.0-defined support for writes to fields with a 9351 Buffer, String, or Integer source operand that is smaller than the 9352 target field. In these cases, the source operand is zero-extended 9353 to fill the target field. 9354 9355 Fixed a problem where a Field starting bit offset (within the 9356 parent operation region) was calculated incorrectly if the 9357 9358 alignment of the field differed from the access width. This 9359 affected CreateWordField, CreateDwordField, CreateQwordField, and 9360 possibly other fields that use the "AccessAny" keyword. 9361 9362 Fixed a problem introduced in the 11_02_01 release where indirect 9363 stores through method arguments did not operate correctly. 9364 9365 2) Linux: 9366 9367 Implemented boot-time ACPI table parsing support 9368 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 9369 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 9370 legacy BIOS interfaces (e.g. MPS) for the configuration of system 9371 processors, memory, and interrupts during setup_arch(). Note that 9372 this patch does not include the required architecture-specific 9373 changes required to apply this information -- subsequent patches 9374 will be posted for both IA32 and IA64 to achieve this. 9375 9376 Added low-level sleep support for IA32 platforms, courtesy of Pat 9377 Mochel. This allows IA32 systems to transition to/from various 9378 sleeping states (e.g. S1, S3), although the lack of a centralized 9379 driver model and power-manageable drivers will prevent its 9380 (successful) use on most systems. 9381 9382 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 9383 submenu, unified IA32 and IA64 options, added new "Boot using ACPI 9384 tables" option, etc. 9385 9386 Increased the default timeout for the EC driver from 1ms to 10ms 9387 (1000 cycles of 10us) to try to address AE_TIME errors during EC 9388 transactions. 9389 9390 ---------------------------------------- 9391 Summary of changes for this label: 11_02_01 9392 9393 1) ACPI CA Core Subsystem: 9394 9395 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 9396 (QWordAcc keyword). All ACPI 2.0 64-bit support is now 9397 implemented. 9398 9399 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 9400 changes to support ACPI 2.0 Qword field access. Read/Write 9401 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 9402 accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 9403 the value parameter for the address space handler interface is now 9404 an ACPI_INTEGER. OSL implementations of these interfaces must now 9405 handle the case where the Width parameter is 64. 9406 9407 Index Fields: Fixed a problem where unaligned bit assembly and 9408 disassembly for IndexFields was not supported correctly. 9409 9410 Index and Bank Fields: Nested Index and Bank Fields are now 9411 supported. During field access, a check is performed to ensure 9412 that the value written to an Index or Bank register is not out of 9413 the range of the register. The Index (or Bank) register is 9414 written before each access to the field data. Future support will 9415 include allowing individual IndexFields to be wider than the 9416 DataRegister width. 9417 9418 Fields: Fixed a problem where the AML interpreter was incorrectly 9419 attempting to write beyond the end of a Field/OpRegion. This was 9420 a boundary case that occurred when a DWORD field was written to a 9421 BYTE access OpRegion, forcing multiple writes and causing the 9422 interpreter to write one datum too many. 9423 9424 Fields: Fixed a problem with Field/OpRegion access where the 9425 starting bit address of a field was incorrectly calculated if the 9426 current access type was wider than a byte (WordAcc, DwordAcc, or 9427 QwordAcc). 9428 9429 Fields: Fixed a problem where forward references to individual 9430 FieldUnits (individual Field names within a Field definition) were 9431 not resolved during the AML table load. 9432 9433 Fields: Fixed a problem where forward references from a Field 9434 definition to the parent Operation Region definition were not 9435 resolved during the AML table load. 9436 9437 Fields: Duplicate FieldUnit names within a scope are now detected 9438 during AML table load. 9439 9440 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 9441 returned an incorrect name for the root node. 9442 9443 Code and Data Size: Code and Data optimizations have permitted new 9444 feature development with an actual reduction in the library size. 9445 Current core subsystem library sizes are shown below. These are 9446 the code and data sizes for the acpica.lib produced by the 9447 Microsoft Visual C++ 6.0 compiler, and these values do not include 9448 any ACPI driver or OSPM code. The debug version of the code 9449 includes the debug output trace mechanism and has a larger code 9450 and data size. Note that these values will vary depending on the 9451 efficiency of the compiler and the compiler options used during 9452 generation. 9453 9454 Previous Release (10_18_01): 9455 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 9456 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 9457 9458 Current Release: 9459 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 9460 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 9461 9462 2) Linux: 9463 9464 Improved /proc processor output (Pavel Machek) Re-added 9465 MODULE_LICENSE("GPL") to all modules. 9466 9467 3) ASL Compiler version X2030: 9468 9469 Duplicate FieldUnit names within a scope are now detected and 9470 flagged as errors. 9471 9472 4) Documentation: 9473 9474 Programmer Reference updated to reflect OSL and address space 9475 handler interface changes described above. 9476 9477 ---------------------------------------- 9478 Summary of changes for this label: 10_18_01 9479 9480 ACPI CA Core Subsystem: 9481 9482 Fixed a problem with the internal object reference count mechanism 9483 that occasionally caused premature object deletion. This resolves 9484 all of the outstanding problem reports where an object is deleted 9485 in the middle of an interpreter evaluation. Although this problem 9486 only showed up in rather obscure cases, the solution to the 9487 problem involved an adjustment of all reference counts involving 9488 objects attached to namespace nodes. 9489 9490 Fixed a problem with Field support in the interpreter where 9491 writing to an aligned field whose length is an exact multiple (2 9492 or greater) of the field access granularity would cause an attempt 9493 to write beyond the end of the field. 9494 9495 The top level AML opcode execution functions within the 9496 interpreter have been renamed with a more meaningful and 9497 consistent naming convention. The modules exmonad.c and 9498 exdyadic.c were eliminated. New modules are exoparg1.c, 9499 exoparg2.c, exoparg3.c, and exoparg6.c. 9500 9501 Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 9502 9503 Fixed a problem where the AML debugger was causing some internal 9504 objects to not be deleted during subsystem termination. 9505 9506 Fixed a problem with the external AcpiEvaluateObject interface 9507 where the subsystem would fault if the named object to be 9508 evaluated refered to a constant such as Zero, Ones, etc. 9509 9510 Fixed a problem with IndexFields and BankFields where the 9511 subsystem would fault if the index, data, or bank registers were 9512 not defined in the same scope as the field itself. 9513 9514 Added printf format string checking for compilers that support 9515 this feature. Corrected more than 50 instances of issues with 9516 format specifiers within invocations of ACPI_DEBUG_PRINT 9517 throughout the core subsystem code. 9518 9519 The ASL "Revision" operator now returns the ACPI support level 9520 implemented in the core - the value "2" since the ACPI 2.0 support 9521 is more than 50% implemented. 9522 9523 Enhanced the output of the AML debugger "dump namespace" command 9524 to output in a more human-readable form. 9525 9526 Current core subsystem library code sizes are shown below. These 9527 9528 are the code and data sizes for the acpica.lib produced by the 9529 Microsoft Visual C++ 6.0 compiler, and these values do not include 9530 any ACPI driver or OSPM code. The debug version of the code 9531 includes the full debug trace mechanism -- leading to a much 9532 9533 larger code and data size. Note that these values will vary 9534 depending on the efficiency of the compiler and the compiler 9535 options used during generation. 9536 9537 Previous Label (09_20_01): 9538 Non-Debug Version: 65K Code, 5K Data, 70K Total 9539 Debug Version: 138K Code, 58K Data, 196K Total 9540 9541 This Label: 9542 9543 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 9544 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 9545 9546 Linux: 9547 9548 Implemented a "Bad BIOS Blacklist" to track machines that have 9549 known ASL/AML problems. 9550 9551 Enhanced the /proc interface for the thermal zone driver and added 9552 support for _HOT (the critical suspend trip point). The 'info' 9553 file now includes threshold/policy information, and allows setting 9554 of _SCP (cooling preference) and _TZP (polling frequency) values 9555 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 9556 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 9557 preference to the passive/quiet mode (if supported by the ASL). 9558 9559 Implemented a workaround for a gcc bug that resuted in an OOPs 9560 when loading the control method battery driver. 9561 9562 ---------------------------------------- 9563 Summary of changes for this label: 09_20_01 9564 9565 ACPI CA Core Subsystem: 9566 9567 The AcpiEnableEvent and AcpiDisableEvent interfaces have been 9568 modified to allow individual GPE levels to be flagged as wake- 9569 enabled (i.e., these GPEs are to remain enabled when the platform 9570 sleeps.) 9571 9572 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 9573 support wake-enabled GPEs. This means that upon entering the 9574 sleep state, all GPEs that are not wake-enabled are disabled. 9575 When leaving the sleep state, these GPEs are reenabled. 9576 9577 A local double-precision divide/modulo module has been added to 9578 enhance portability to OS kernels where a 64-bit math library is 9579 not available. The new module is "utmath.c". 9580 9581 Several optimizations have been made to reduce the use of CPU 9582 stack. Originally over 2K, the maximum stack usage is now below 9583 2K at 1860 bytes (1.82k) 9584 9585 Fixed a problem with the AcpiGetFirmwareTable interface where the 9586 root table pointer was not mapped into a logical address properly. 9587 9588 Fixed a problem where a NULL pointer was being dereferenced in the 9589 interpreter code for the ASL Notify operator. 9590 9591 Fixed a problem where the use of the ASL Revision operator 9592 returned an error. This operator now returns the current version 9593 of the ACPI CA core subsystem. 9594 9595 Fixed a problem where objects passed as control method parameters 9596 to AcpiEvaluateObject were always deleted at method termination. 9597 However, these objects may end up being stored into the namespace 9598 by the called method. The object reference count mechanism was 9599 applied to these objects instead of a force delete. 9600 9601 Fixed a problem where static strings or buffers (contained in the 9602 AML code) that are declared as package elements within the ASL 9603 code could cause a fault because the interpreter would attempt to 9604 delete them. These objects are now marked with the "static 9605 object" flag to prevent any attempt to delete them. 9606 9607 Implemented an interpreter optimization to use operands directly 9608 from the state object instead of extracting the operands to local 9609 variables. This reduces stack use and code size, and improves 9610 performance. 9611 9612 The module exxface.c was eliminated as it was an unnecessary extra 9613 layer of code. 9614 9615 Current core subsystem library code sizes are shown below. These 9616 are the code and data sizes for the acpica.lib produced by the 9617 Microsoft Visual C++ 6.0 compiler, and these values do not include 9618 any ACPI driver or OSPM code. The debug version of the code 9619 includes the full debug trace mechanism -- leading to a much 9620 larger code and data size. Note that these values will vary 9621 depending on the efficiency of the compiler and the compiler 9622 options used during generation. 9623 9624 Non-Debug Version: 65K Code, 5K Data, 70K Total 9625 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K 9626 Total (Previously 195K) 9627 9628 Linux: 9629 9630 Support for ACPI 2.0 64-bit integers has been added. All ACPI 9631 Integer objects are now 64 bits wide 9632 9633 All Acpi data types and structures are now in lower case. Only 9634 Acpi macros are upper case for differentiation. 9635 9636 Documentation: 9637 9638 Changes to the external interfaces as described above. 9639 9640 ---------------------------------------- 9641 Summary of changes for this label: 08_31_01 9642 9643 ACPI CA Core Subsystem: 9644 9645 A bug with interpreter implementation of the ASL Divide operator 9646 was found and fixed. The implicit function return value (not the 9647 explicit store operands) was returning the remainder instead of 9648 the quotient. This was a longstanding bug and it fixes several 9649 known outstanding issues on various platforms. 9650 9651 The ACPI_DEBUG_PRINT and function trace entry/exit macros have 9652 been further optimized for size. There are 700 invocations of the 9653 DEBUG_PRINT macro alone, so each optimization reduces the size of 9654 the debug version of the subsystem significantly. 9655 9656 A stack trace mechanism has been implemented. The maximum stack 9657 usage is about 2K on 32-bit platforms. The debugger command "stat 9658 stack" will display the current maximum stack usage. 9659 9660 All public symbols and global variables within the subsystem are 9661 now prefixed with the string "Acpi". This keeps all of the 9662 symbols grouped together in a kernel map, and avoids conflicts 9663 with other kernel subsystems. 9664 9665 Most of the internal fixed lookup tables have been moved into the 9666 code segment via the const operator. 9667 9668 Several enhancements have been made to the interpreter to both 9669 reduce the code size and improve performance. 9670 9671 Current core subsystem library code sizes are shown below. These 9672 are the code and data sizes for the acpica.lib produced by the 9673 Microsoft Visual C++ 6.0 compiler, and these values do not include 9674 any ACPI driver or OSPM code. The debug version of the code 9675 includes the full debug trace mechanism which contains over 700 9676 invocations of the DEBUG_PRINT macro, 500 function entry macro 9677 invocations, and over 900 function exit macro invocations -- 9678 leading to a much larger code and data size. Note that these 9679 values will vary depending on the efficiency of the compiler and 9680 the compiler options used during generation. 9681 9682 Non-Debug Version: 64K Code, 5K Data, 69K Total 9683 Debug Version: 137K Code, 58K Data, 195K Total 9684 9685 Linux: 9686 9687 Implemented wbinvd() macro, pending a kernel-wide definition. 9688 9689 Fixed /proc/acpi/event to handle poll() and short reads. 9690 9691 ASL Compiler, version X2026: 9692 9693 Fixed a problem introduced in the previous label where the AML 9694 9695 code emitted for package objects produced packages with zero 9696 length. 9697 9698 ---------------------------------------- 9699 Summary of changes for this label: 08_16_01 9700 9701 ACPI CA Core Subsystem: 9702 9703 The following ACPI 2.0 ASL operators have been implemented in the 9704 AML interpreter (These are already supported by the Intel ASL 9705 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 9706 ToBuffer. Support for 64-bit AML constants is implemented in the 9707 AML parser, debugger, and disassembler. 9708 9709 The internal memory tracking mechanism (leak detection code) has 9710 been upgraded to reduce the memory overhead (a separate tracking 9711 block is no longer allocated for each memory allocation), and now 9712 supports all of the internal object caches. 9713 9714 The data structures and code for the internal object caches have 9715 been coelesced and optimized so that there is a single cache and 9716 memory list data structure and a single group of functions that 9717 implement generic cache management. This has reduced the code 9718 size in both the debug and release versions of the subsystem. 9719 9720 The DEBUG_PRINT macro(s) have been optimized for size and replaced 9721 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 9722 different, because it generates a single call to an internal 9723 function. This results in a savings of about 90 bytes per 9724 invocation, resulting in an overall code and data savings of about 9725 16% in the debug version of the subsystem. 9726 9727 Linux: 9728 9729 Fixed C3 disk corruption problems and re-enabled C3 on supporting 9730 machines. 9731 9732 Integrated low-level sleep code by Patrick Mochel. 9733 9734 Further tweaked source code Linuxization. 9735 9736 Other minor fixes. 9737 9738 ASL Compiler: 9739 9740 Support for ACPI 2.0 variable length packages is fixed/completed. 9741 9742 Fixed a problem where the optional length parameter for the ACPI 9743 2.0 ToString operator. 9744 9745 Fixed multiple extraneous error messages when a syntax error is 9746 detected within the declaration line of a control method. 9747 9748 ---------------------------------------- 9749 Summary of changes for this label: 07_17_01 9750 9751 ACPI CA Core Subsystem: 9752 9753 Added a new interface named AcpiGetFirmwareTable to obtain any 9754 ACPI table via the ACPI signature. The interface can be called at 9755 any time during kernel initialization, even before the kernel 9756 virtual memory manager is initialized and paging is enabled. This 9757 allows kernel subsystems to obtain ACPI tables very early, even 9758 before the ACPI CA subsystem is initialized. 9759 9760 Fixed a problem where Fields defined with the AnyAcc attribute 9761 could be resolved to the incorrect address under the following 9762 conditions: 1) the field width is larger than 8 bits and 2) the 9763 parent operation region is not defined on a DWORD boundary. 9764 9765 Fixed a problem where the interpreter is not being locked during 9766 namespace initialization (during execution of the _INI control 9767 methods), causing an error when an attempt is made to release it 9768 later. 9769 9770 ACPI 2.0 support in the AML Interpreter has begun and will be 9771 ongoing throughout the rest of this year. In this label, The Mod 9772 operator is implemented. 9773 9774 Added a new data type to contain full PCI addresses named 9775 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 9776 and Function values. 9777 9778 Linux: 9779 9780 Enhanced the Linux version of the source code to change most 9781 capitalized ACPI type names to lowercase. For example, all 9782 instances of ACPI_STATUS are changed to acpi_status. This will 9783 result in a large diff, but the change is strictly cosmetic and 9784 aligns the CA code closer to the Linux coding standard. 9785 9786 OSL Interfaces: 9787 9788 The interfaces to the PCI configuration space have been changed to 9789 add the PCI Segment number and to split the single 32-bit combined 9790 DeviceFunction field into two 16-bit fields. This was 9791 accomplished by moving the four values that define an address in 9792 PCI configuration space (segment, bus, device, and function) to 9793 the new ACPI_PCI_ID structure. 9794 9795 The changes to the PCI configuration space interfaces led to a 9796 reexamination of the complete set of address space access 9797 interfaces for PCI, I/O, and Memory. The previously existing 18 9798 interfaces have proven difficult to maintain (any small change 9799 must be propagated across at least 6 interfaces) and do not easily 9800 allow for future expansion to 64 bits if necessary. Also, on some 9801 systems, it would not be appropriate to demultiplex the access 9802 width (8, 16, 32,or 64) before calling the OSL if the 9803 corresponding native OS interfaces contain a similar access width 9804 parameter. For these reasons, the 18 address space interfaces 9805 have been replaced by these 6 new ones: 9806 9807 AcpiOsReadPciConfiguration 9808 AcpiOsWritePciConfiguration 9809 AcpiOsReadMemory 9810 AcpiOsWriteMemory 9811 AcpiOsReadPort 9812 AcpiOsWritePort 9813 9814 Added a new interface named AcpiOsGetRootPointer to allow the OSL 9815 to perform the platform and/or OS-specific actions necessary to 9816 obtain the ACPI RSDP table pointer. On IA-32 platforms, this 9817 interface will simply call down to the CA core to perform the low- 9818 memory search for the table. On IA-64, the RSDP is obtained from 9819 EFI. Migrating this interface to the OSL allows the CA core to 9820 9821 remain OS and platform independent. 9822 9823 Added a new interface named AcpiOsSignal to provide a generic 9824 "function code and pointer" interface for various miscellaneous 9825 signals and notifications that must be made to the host OS. The 9826 first such signals are intended to support the ASL Fatal and 9827 Breakpoint operators. In the latter case, the AcpiOsBreakpoint 9828 interface has been obsoleted. 9829 9830 The definition of the AcpiFormatException interface has been 9831 changed to simplify its use. The caller no longer must supply a 9832 buffer to the call; A pointer to a const string is now returned 9833 directly. This allows the call to be easily used in printf 9834 statements, etc. since the caller does not have to manage a local 9835 buffer. 9836 9837 9838 ASL Compiler, Version X2025: 9839 9840 The ACPI 2.0 Switch/Case/Default operators have been implemented 9841 and are fully functional. They will work with all ACPI 1.0 9842 interpreters, since the operators are simply translated to If/Else 9843 pairs. 9844 9845 The ACPI 2.0 ElseIf operator is implemented and will also work 9846 with 1.0 interpreters, for the same reason. 9847 9848 Implemented support for ACPI 2.0 variable-length packages. These 9849 packages have a separate opcode, and their size is determined by 9850 the interpreter at run-time. 9851 9852 Documentation The ACPI CA Programmer Reference has been updated to 9853 reflect the new interfaces and changes to existing interfaces. 9854 9855 ------------------------------------------ 9856 Summary of changes for this label: 06_15_01 9857 9858 ACPI CA Core Subsystem: 9859 9860 Fixed a problem where a DWORD-accessed field within a Buffer 9861 object would get its byte address inadvertently rounded down to 9862 the nearest DWORD. Buffers are always Byte-accessible. 9863 9864 ASL Compiler, version X2024: 9865 9866 Fixed a problem where the Switch() operator would either fault or 9867 hang the compiler. Note however, that the AML code for this ACPI 9868 2.0 operator is not yet implemented. 9869 9870 Compiler uses the new AcpiOsGetTimer interface to obtain compile 9871 timings. 9872 9873 Implementation of the CreateField operator automatically converts 9874 a reference to a named field within a resource descriptor from a 9875 byte offset to a bit offset if required. 9876 9877 Added some missing named fields from the resource descriptor 9878 support. These are the names that are automatically created by the 9879 compiler to reference fields within a descriptor. They are only 9880 valid at compile time and are not passed through to the AML 9881 interpreter. 9882 9883 Resource descriptor named fields are now typed as Integers and 9884 subject to compile-time typechecking when used in expressions. 9885 9886 ------------------------------------------ 9887 Summary of changes for this label: 05_18_01 9888 9889 ACPI CA Core Subsystem: 9890 9891 Fixed a couple of problems in the Field support code where bits 9892 from adjacent fields could be returned along with the proper field 9893 bits. Restructured the field support code to improve performance, 9894 readability and maintainability. 9895 9896 New DEBUG_PRINTP macro automatically inserts the procedure name 9897 into the output, saving hundreds of copies of procedure name 9898 strings within the source, shrinking the memory footprint of the 9899 debug version of the core subsystem. 9900 9901 Source Code Structure: 9902 9903 The source code directory tree was restructured to reflect the 9904 current organization of the component architecture. Some files 9905 and directories have been moved and/or renamed. 9906 9907 Linux: 9908 9909 Fixed leaking kacpidpc processes. 9910 9911 Fixed queueing event data even when /proc/acpi/event is not 9912 opened. 9913 9914 ASL Compiler, version X2020: 9915 9916 Memory allocation performance enhancement - over 24X compile time 9917 improvement on large ASL files. Parse nodes and namestring 9918 buffers are now allocated from a large internal compiler buffer. 9919 9920 The temporary .SRC file is deleted unless the "-s" option is 9921 specified 9922 9923 The "-d" debug output option now sends all output to the .DBG file 9924 instead of the console. 9925 9926 "External" second parameter is now optional 9927 9928 "ElseIf" syntax now properly allows the predicate 9929 9930 Last operand to "Load" now recognized as a Target operand 9931 9932 Debug object can now be used anywhere as a normal object. 9933 9934 ResourceTemplate now returns an object of type BUFFER 9935 9936 EISAID now returns an object of type INTEGER 9937 9938 "Index" now works with a STRING operand 9939 9940 "LoadTable" now accepts optional parameters 9941 9942 "ToString" length parameter is now optional 9943 9944 "Interrupt (ResourceType," parse error fixed. 9945 9946 "Register" with a user-defined region space parse error fixed 9947 9948 Escaped backslash at the end of a string ("\\") scan/parse error 9949 fixed 9950 9951 "Revision" is now an object of type INTEGER. 9952 9953 9954 9955 ------------------------------------------ 9956 Summary of changes for this label: 05_02_01 9957 9958 Linux: 9959 9960 /proc/acpi/event now blocks properly. 9961 9962 Removed /proc/sys/acpi. You can still dump your DSDT from 9963 /proc/acpi/dsdt. 9964 9965 ACPI CA Core Subsystem: 9966 9967 Fixed a problem introduced in the previous label where some of the 9968 "small" resource descriptor types were not recognized. 9969 9970 Improved error messages for the case where an ASL Field is outside 9971 the range of the parent operation region. 9972 9973 ASL Compiler, version X2018: 9974 9975 9976 Added error detection for ASL Fields that extend beyond the length 9977 of the parent operation region (only if the length of the region 9978 is known at compile time.) This includes fields that have a 9979 minimum access width that is smaller than the parent region, and 9980 individual field units that are partially or entirely beyond the 9981 extent of the parent. 9982 9983 9984 9985 ------------------------------------------ 9986 Summary of changes for this label: 04_27_01 9987 9988 ACPI CA Core Subsystem: 9989 9990 Fixed a problem where the namespace mutex could be released at the 9991 wrong time during execution of AcpiRemoveAddressSpaceHandler. 9992 9993 Added optional thread ID output for debug traces, to simplify 9994 debugging of multiple threads. Added context switch notification 9995 when the debug code realizes that a different thread is now 9996 executing ACPI code. 9997 9998 Some additional external data types have been prefixed with the 9999 string "ACPI_" for consistency. This may effect existing code. 10000 The data types affected are the external callback typedefs - e.g., 10001 10002 WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 10003 10004 Linux: 10005 10006 Fixed an issue with the OSL semaphore implementation where a 10007 thread was waking up with an error from receiving a SIGCHLD 10008 signal. 10009 10010 Linux version of ACPI CA now uses the system C library for string 10011 manipulation routines instead of a local implementation. 10012 10013 Cleaned up comments and removed TBDs. 10014 10015 ASL Compiler, version X2017: 10016 10017 Enhanced error detection and reporting for all file I/O 10018 operations. 10019 10020 Documentation: 10021 10022 Programmer Reference updated to version 1.06. 10023 10024 10025 10026 ------------------------------------------ 10027 Summary of changes for this label: 04_13_01 10028 10029 ACPI CA Core Subsystem: 10030 10031 Restructured support for BufferFields and RegionFields. 10032 BankFields support is now fully operational. All known 32-bit 10033 limitations on field sizes have been removed. Both BufferFields 10034 and (Operation) RegionFields are now supported by the same field 10035 management code. 10036 10037 Resource support now supports QWORD address and IO resources. The 10038 16/32/64 bit address structures and the Extended IRQ structure 10039 have been changed to properly handle Source Resource strings. 10040 10041 A ThreadId of -1 is now used to indicate a "mutex not acquired" 10042 condition internally and must never be returned by AcpiOsThreadId. 10043 This reserved value was changed from 0 since Unix systems allow a 10044 thread ID of 0. 10045 10046 Linux: 10047 10048 Driver code reorganized to enhance portability 10049 10050 Added a kernel configuration option to control ACPI_DEBUG 10051 10052 Fixed the EC driver to honor _GLK. 10053 10054 ASL Compiler, version X2016: 10055 10056 Fixed support for the "FixedHw" keyword. Previously, the FixedHw 10057 address space was set to 0, not 0x7f as it should be. 10058 10059 ------------------------------------------ 10060 Summary of changes for this label: 03_13_01 10061 10062 ACPI CA Core Subsystem: 10063 10064 During ACPI initialization, the _SB_._INI method is now run if 10065 present. 10066 10067 Notify handler fix - notifies are deferred until the parent method 10068 completes execution. This fixes the "mutex already acquired" 10069 issue seen occasionally. 10070 10071 Part of the "implicit conversion" rules in ACPI 2.0 have been 10072 found to cause compatibility problems with existing ASL/AML. The 10073 convert "result-to-target-type" implementation has been removed 10074 for stores to method Args and Locals. Source operand conversion 10075 is still fully implemented. Possible changes to ACPI 2.0 10076 specification pending. 10077 10078 Fix to AcpiRsCalculatePciRoutingTableLength to return correct 10079 length. 10080 10081 Fix for compiler warnings for 64-bit compiles. 10082 10083 Linux: 10084 10085 /proc output aligned for easier parsing. 10086 10087 Release-version compile problem fixed. 10088 10089 New kernel configuration options documented in Configure.help. 10090 10091 IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 10092 context" message. 10093 10094 OSPM: 10095 10096 Power resource driver integrated with bus manager. 10097 10098 Fixed kernel fault during active cooling for thermal zones. 10099 10100 Source Code: 10101 10102 The source code tree has been restructured. 10103 10104 10105 10106 ------------------------------------------ 10107 Summary of changes for this label: 03_02_01 10108 10109 Linux OS Services Layer (OSL): 10110 10111 Major revision of all Linux-specific code. 10112 10113 Modularized all ACPI-specific drivers. 10114 10115 Added new thermal zone and power resource drivers. 10116 10117 Revamped /proc interface (new functionality is under /proc/acpi). 10118 10119 New kernel configuration options. 10120 10121 Linux known issues: 10122 10123 New kernel configuration options not documented in Configure.help 10124 yet. 10125 10126 10127 Module dependencies not currently implemented. If used, they 10128 should be loaded in this order: busmgr, power, ec, system, 10129 processor, battery, ac_adapter, button, thermal. 10130 10131 Modules will not load if CONFIG_MODVERSION is set. 10132 10133 IBM 600E - entering S5 may reboot instead of shutting down. 10134 10135 IBM 600E - Sleep button may generate "Invalid <NULL> context" 10136 message. 10137 10138 Some systems may fail with "execution mutex already acquired" 10139 message. 10140 10141 ACPI CA Core Subsystem: 10142 10143 Added a new OSL Interface, AcpiOsGetThreadId. This was required 10144 for the deadlock detection code. Defined to return a non-zero, 32- 10145 bit thread ID for the currently executing thread. May be a non- 10146 zero constant integer on single-thread systems. 10147 10148 Implemented deadlock detection for internal subsystem mutexes. We 10149 may add conditional compilation for this code (debug only) later. 10150 10151 ASL/AML Mutex object semantics are now fully supported. This 10152 includes multiple acquires/releases by owner and support for the 10153 10154 Mutex SyncLevel parameter. 10155 10156 A new "Force Release" mechanism automatically frees all ASL 10157 Mutexes that have been acquired but not released when a thread 10158 exits the interpreter. This forces conformance to the ACPI spec 10159 ("All mutexes must be released when an invocation exits") and 10160 prevents deadlocked ASL threads. This mechanism can be expanded 10161 (later) to monitor other resource acquisitions if OEM ASL code 10162 continues to misbehave (which it will). 10163 10164 Several new ACPI exception codes have been added for the Mutex 10165 support. 10166 10167 Recursive method calls are now allowed and supported (the ACPI 10168 spec does in fact allow recursive method calls.) The number of 10169 recursive calls is subject to the restrictions imposed by the 10170 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 10171 parameter. 10172 10173 Implemented support for the SyncLevel parameter for control 10174 methods (ACPI 2.0 feature) 10175 10176 Fixed a deadlock problem when multiple threads attempted to use 10177 the interpreter. 10178 10179 Fixed a problem where the string length of a String package 10180 element was not always set in a package returned from 10181 AcpiEvaluateObject. 10182 10183 Fixed a problem where the length of a String package element was 10184 not always included in the length of the overall package returned 10185 from AcpiEvaluateObject. 10186 10187 Added external interfaces (Acpi*) to the ACPI debug memory 10188 manager. This manager keeps a list of all outstanding 10189 allocations, and can therefore detect memory leaks and attempts to 10190 free memory blocks more than once. Useful for code such as the 10191 power manager, etc. May not be appropriate for device drivers. 10192 Performance with the debug code enabled is slow. 10193 10194 The ACPI Global Lock is now an optional hardware element. 10195 10196 ASL Compiler Version X2015: 10197 10198 Integrated changes to allow the compiler to be generated on 10199 multiple platforms. 10200 10201 Linux makefile added to generate the compiler on Linux 10202 10203 Source Code: 10204 10205 All platform-specific headers have been moved to their own 10206 subdirectory, Include/Platform. 10207 10208 New source file added, Interpreter/ammutex.c 10209 10210 New header file, Include/acstruct.h 10211 10212 Documentation: 10213 10214 The programmer reference has been updated for the following new 10215 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 10216 10217 ------------------------------------------ 10218 Summary of changes for this label: 02_08_01 10219 10220 Core ACPI CA Subsystem: Fixed a problem where an error was 10221 incorrectly returned if the return resource buffer was larger than 10222 the actual data (in the resource interfaces). 10223 10224 References to named objects within packages are resolved to the 10225 10226 full pathname string before packages are returned directly (via 10227 the AcpiEvaluateObject interface) or indirectly via the resource 10228 interfaces. 10229 10230 Linux OS Services Layer (OSL): 10231 10232 Improved /proc battery interface. 10233 10234 10235 Added C-state debugging output and other miscellaneous fixes. 10236 10237 ASL Compiler Version X2014: 10238 10239 All defined method arguments can now be used as local variables, 10240 including the ones that are not actually passed in as parameters. 10241 The compiler tracks initialization of the arguments and issues an 10242 exception if they are used without prior assignment (just like 10243 locals). 10244 10245 The -o option now specifies a filename prefix that is used for all 10246 output files, including the AML output file. Otherwise, the 10247 default behavior is as follows: 1) the AML goes to the file 10248 specified in the DSDT. 2) all other output files use the input 10249 source filename as the base. 10250 10251 ------------------------------------------ 10252 Summary of changes for this label: 01_25_01 10253 10254 Core ACPI CA Subsystem: Restructured the implementation of object 10255 store support within the interpreter. This includes support for 10256 the Store operator as well as any ASL operators that include a 10257 target operand. 10258 10259 Partially implemented support for Implicit Result-to-Target 10260 conversion. This is when a result object is converted on the fly 10261 to the type of an existing target object. Completion of this 10262 support is pending further analysis of the ACPI specification 10263 concerning this matter. 10264 10265 CPU-specific code has been removed from the subsystem (hardware 10266 directory). 10267 10268 New Power Management Timer functions added 10269 10270 Linux OS Services Layer (OSL): Moved system state transition code 10271 to the core, fixed it, and modified Linux OSL accordingly. 10272 10273 Fixed C2 and C3 latency calculations. 10274 10275 10276 We no longer use the compilation date for the version message on 10277 initialization, but retrieve the version from AcpiGetSystemInfo(). 10278 10279 Incorporated for fix Sony VAIO machines. 10280 10281 Documentation: The Programmer Reference has been updated and 10282 reformatted. 10283 10284 10285 ASL Compiler: Version X2013: Fixed a problem where the line 10286 numbering and error reporting could get out of sync in the 10287 presence of multiple include files. 10288 10289 ------------------------------------------ 10290 Summary of changes for this label: 01_15_01 10291 10292 Core ACPI CA Subsystem: 10293 10294 Implemented support for type conversions in the execution of the 10295 ASL Concatenate operator (The second operand is converted to 10296 match the type of the first operand before concatenation.) 10297 10298 Support for implicit source operand conversion is partially 10299 implemented. The ASL source operand types Integer, Buffer, and 10300 String are freely interchangeable for most ASL operators and are 10301 converted by the interpreter on the fly as required. Implicit 10302 Target operand conversion (where the result is converted to the 10303 target type before storing) is not yet implemented. 10304 10305 Support for 32-bit and 64-bit BCD integers is implemented. 10306 10307 Problem fixed where a field read on an aligned field could cause a 10308 read past the end of the field. 10309 10310 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 10311 does not return a value, but the caller expects one. (The ASL 10312 compiler flags this as a warning.) 10313 10314 ASL Compiler: 10315 10316 Version X2011: 10317 1. Static typechecking of all operands is implemented. This 10318 prevents the use of invalid objects (such as using a Package where 10319 an Integer is required) at compile time instead of at interpreter 10320 run-time. 10321 2. The ASL source line is printed with ALL errors and warnings. 10322 3. Bug fix for source EOF without final linefeed. 10323 4. Debug option is split into a parse trace and a namespace trace. 10324 5. Namespace output option (-n) includes initial values for 10325 integers and strings. 10326 6. Parse-only option added for quick syntax checking. 10327 7. Compiler checks for duplicate ACPI name declarations 10328 10329 Version X2012: 10330 1. Relaxed typechecking to allow interchangeability between 10331 strings, integers, and buffers. These types are now converted by 10332 the interpreter at runtime. 10333 2. Compiler reports time taken by each internal subsystem in the 10334 debug output file. 10335 10336 10337 ------------------------------------------ 10338 Summary of changes for this label: 12_14_00 10339 10340 ASL Compiler: 10341 10342 This is the first official release of the compiler. Since the 10343 compiler requires elements of the Core Subsystem, this label 10344 synchronizes everything. 10345 10346 ------------------------------------------ 10347 Summary of changes for this label: 12_08_00 10348 10349 10350 Fixed a problem where named references within the ASL definition 10351 of both OperationRegions and CreateXXXFields did not work 10352 properly. The symptom was an AE_AML_OPERAND_TYPE during 10353 initialization of the region/field. This is similar (but not 10354 related internally) to the problem that was fixed in the last 10355 label. 10356 10357 Implemented both 32-bit and 64-bit support for the BCD ASL 10358 functions ToBCD and FromBCD. 10359 10360 Updated all legal headers to include "2000" in the copyright 10361 years. 10362 10363 ------------------------------------------ 10364 Summary of changes for this label: 12_01_00 10365 10366 Fixed a problem where method invocations within the ASL definition 10367 of both OperationRegions and CreateXXXFields did not work 10368 properly. The symptom was an AE_AML_OPERAND_TYPE during 10369 initialization of the region/field: 10370 10371 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 10372 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 10373 (0x3005) 10374 10375 Fixed a problem where operators with more than one nested 10376 subexpression would fail. The symptoms were varied, by mostly 10377 AE_AML_OPERAND_TYPE errors. This was actually a rather serious 10378 problem that has gone unnoticed until now. 10379 10380 Subtract (Add (1,2), Multiply (3,4)) 10381 10382 Fixed a problem where AcpiGetHandle didn't quite get fixed in the 10383 previous build (The prefix part of a relative path was handled 10384 incorrectly). 10385 10386 Fixed a problem where Operation Region initialization failed if 10387 the operation region name was a "namepath" instead of a simple 10388 "nameseg". Symptom was an AE_NO_OPERAND error. 10389 10390 Fixed a problem where an assignment to a local variable via the 10391 indirect RefOf mechanism only worked for the first such 10392 assignment. Subsequent assignments were ignored. 10393 10394 ------------------------------------------ 10395 Summary of changes for this label: 11_15_00 10396 10397 ACPI 2.0 table support with backwards support for ACPI 1.0 and the 10398 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 10399 the AML interpreter does NOT have support for the new 2.0 ASL 10400 grammar terms at this time. 10401 10402 All ACPI hardware access is via the GAS structures in the ACPI 2.0 10403 FADT. 10404 10405 All physical memory addresses across all platforms are now 64 bits 10406 wide. Logical address width remains dependent on the platform 10407 (i.e., "void *"). 10408 10409 AcpiOsMapMemory interface changed to a 64-bit physical address. 10410 10411 The AML interpreter integer size is now 64 bits, as per the ACPI 10412 2.0 specification. 10413 10414 For backwards compatibility with ACPI 1.0, ACPI tables with a 10415 revision number less than 2 use 32-bit integers only. 10416 10417 Fixed a problem where the evaluation of OpRegion operands did not 10418 always resolve them to numbers properly. 10419 10420 ------------------------------------------ 10421 Summary of changes for this label: 10_20_00 10422 10423 Fix for CBN_._STA issue. This fix will allow correct access to 10424 CBN_ OpRegions when the _STA returns 0x8. 10425 10426 Support to convert ACPI constants (Ones, Zeros, One) to actual 10427 values before a package object is returned 10428 10429 Fix for method call as predicate to if/while construct causing 10430 incorrect if/while behavior 10431 10432 Fix for Else block package lengths sometimes calculated wrong (if 10433 block > 63 bytes) 10434 10435 Fix for Processor object length field, was always zero 10436 10437 Table load abort if FACP sanity check fails 10438 10439 Fix for problem with Scope(name) if name already exists 10440 10441 Warning emitted if a named object referenced cannot be found 10442 (resolved) during method execution. 10443 10444 10445 10446 10447 10448 ------------------------------------------ 10449 Summary of changes for this label: 9_29_00 10450 10451 New table initialization interfaces: AcpiInitializeSubsystem no 10452 longer has any parameters AcpiFindRootPointer - Find the RSDP (if 10453 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 10454 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 10455 AcpiLoadTables 10456 10457 Note: These interface changes require changes to all existing OSDs 10458 10459 The PCI_Config default address space handler is always installed 10460 at the root namespace object. 10461 10462 ------------------------------------------- 10463 Summary of changes for this label: 09_15_00 10464 10465 The new initialization architecture is implemented. New 10466 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 10467 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 10468 10469 (Namespace is automatically loaded when a table is loaded) 10470 10471 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 10472 52 bytes to 32 bytes. There is usually one of these for every 10473 namespace object, so the memory savings is significant. 10474 10475 Implemented just-in-time evaluation of the CreateField operators. 10476 10477 Bug fixes for IA-64 support have been integrated. 10478 10479 Additional code review comments have been implemented 10480 10481 The so-called "third pass parse" has been replaced by a final walk 10482 through the namespace to initialize all operation regions (address 10483 spaces) and fields that have not yet been initialized during the 10484 execution of the various _INI and REG methods. 10485 10486 New file - namespace/nsinit.c 10487 10488 ------------------------------------------- 10489 Summary of changes for this label: 09_01_00 10490 10491 Namespace manager data structures have been reworked to change the 10492 primary object from a table to a single object. This has 10493 resulted in dynamic memory savings of 3X within the namespace and 10494 2X overall in the ACPI CA subsystem. 10495 10496 Fixed problem where the call to AcpiEvFindPciRootBuses was 10497 inadvertently left commented out. 10498 10499 Reduced the warning count when generating the source with the GCC 10500 compiler. 10501 10502 Revision numbers added to each module header showing the 10503 SourceSafe version of the file. Please refer to this version 10504 number when giving us feedback or comments on individual modules. 10505 10506 The main object types within the subsystem have been renamed to 10507 clarify their purpose: 10508 10509 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 10510 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 10511 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 10512 10513 NOTE: no changes to the initialization sequence are included in 10514 this label. 10515 10516 ------------------------------------------- 10517 Summary of changes for this label: 08_23_00 10518 10519 Fixed problem where TerminateControlMethod was being called 10520 multiple times per method 10521 10522 Fixed debugger problem where single stepping caused a semaphore to 10523 be oversignalled 10524 10525 Improved performance through additional parse object caching - 10526 added ACPI_EXTENDED_OP type 10527 10528 ------------------------------------------- 10529 Summary of changes for this label: 08_10_00 10530 10531 Parser/Interpreter integration: Eliminated the creation of 10532 complete parse trees for ACPI tables and control methods. 10533 Instead, parse subtrees are created and then deleted as soon as 10534 they are processed (Either entered into the namespace or executed 10535 by the interpreter). This reduces the use of dynamic kernel 10536 memory significantly. (about 10X) 10537 10538 Exception codes broken into classes and renumbered. Be sure to 10539 recompile all code that includes acexcep.h. Hopefully we won't 10540 have to renumber the codes again now that they are split into 10541 classes (environment, programmer, AML code, ACPI table, and 10542 internal). 10543 10544 Fixed some additional alignment issues in the Resource Manager 10545 subcomponent 10546 10547 Implemented semaphore tracking in the AcpiExec utility, and fixed 10548 several places where mutexes/semaphores were being unlocked 10549 without a corresponding lock operation. There are no known 10550 semaphore or mutex "leaks" at this time. 10551 10552 Fixed the case where an ASL Return operator is used to return an 10553 unnamed package. 10554 10555 ------------------------------------------- 10556 Summary of changes for this label: 07_28_00 10557 10558 Fixed a problem with the way addresses were calculated in 10559 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 10560 manifested itself when a Field was created with WordAccess or 10561 DwordAccess, but the field unit defined within the Field was less 10562 10563 than a Word or Dword. 10564 10565 Fixed a problem in AmlDumpOperands() module's loop to pull 10566 operands off of the operand stack to display information. The 10567 problem manifested itself as a TLB error on 64-bit systems when 10568 accessing an operand stack with two or more operands. 10569 10570 Fixed a problem with the PCI configuration space handlers where 10571 context was getting confused between accesses. This required a 10572 change to the generic address space handler and address space 10573 setup definitions. Handlers now get both a global handler context 10574 (this is the one passed in by the user when executing 10575 AcpiInstallAddressSpaceHandler() and a specific region context 10576 that is unique to each region (For example, the _ADR, _SEG and 10577 _BBN values associated with a specific region). The generic 10578 function definitions have changed to the following: 10579 10580 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 10581 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 10582 *HandlerContext, // This used to be void *Context void 10583 *RegionContext); // This is an additional parameter 10584 10585 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 10586 RegionHandle, UINT32 Function, void *HandlerContext, void 10587 **RegionContext); // This used to be **ReturnContext 10588 10589 ------------------------------------------- 10590 Summary of changes for this label: 07_21_00 10591 10592 Major file consolidation and rename. All files within the 10593 interpreter have been renamed as well as most header files. This 10594 was done to prevent collisions with existing files in the host 10595 OSs -- filenames such as "config.h" and "global.h" seem to be 10596 quite common. The VC project files have been updated. All 10597 makefiles will require modification. 10598 10599 The parser/interpreter integration continues in Phase 5 with the 10600 implementation of a complete 2-pass parse (the AML is parsed 10601 twice) for each table; This avoids the construction of a huge 10602 parse tree and therefore reduces the amount of dynamic memory 10603 required by the subsystem. Greater use of the parse object cache 10604 means that performance is unaffected. 10605 10606 Many comments from the two code reviews have been rolled in. 10607 10608 The 64-bit alignment support is complete. 10609 10610 ------------------------------------------- 10611 Summary of changes for this label: 06_30_00 10612 10613 With a nod and a tip of the hat to the technology of yesteryear, 10614 we've added support in the source code for 80 column output 10615 devices. The code is now mostly constrained to 80 columns or 10616 less to support environments and editors that 1) cannot display 10617 or print more than 80 characters on a single line, and 2) cannot 10618 disable line wrapping. 10619 10620 A major restructuring of the namespace data structure has been 10621 completed. The result is 1) cleaner and more 10622 understandable/maintainable code, and 2) a significant reduction 10623 in the dynamic memory requirement for each named ACPI object 10624 (almost half). 10625 10626 ------------------------------------------- 10627 Summary of changes for this label: 06_23_00 10628 10629 Linux support has been added. In order to obtain approval to get 10630 the ACPI CA subsystem into the Linux kernel, we've had to make 10631 quite a few changes to the base subsystem that will affect all 10632 users (all the changes are generic and OS- independent). The 10633 effects of these global changes have been somewhat far reaching. 10634 Files have been merged and/or renamed and interfaces have been 10635 renamed. The major changes are described below. 10636 10637 Osd* interfaces renamed to AcpiOs* to eliminate namespace 10638 pollution/confusion within our target kernels. All OSD 10639 interfaces must be modified to match the new naming convention. 10640 10641 Files merged across the subsystem. A number of the smaller source 10642 and header files have been merged to reduce the file count and 10643 increase the density of the existing files. There are too many 10644 to list here. In general, makefiles that call out individual 10645 files will require rebuilding. 10646 10647 Interpreter files renamed. All interpreter files now have the 10648 prefix am* instead of ie* and is*. 10649 10650 Header files renamed: The acapi.h file is now acpixf.h. The 10651 acpiosd.h file is now acpiosxf.h. We are removing references to 10652 the acronym "API" since it is somewhat windowsy. The new name is 10653 "external interface" or xface or xf in the filenames.j 10654 10655 10656 All manifest constants have been forced to upper case (some were 10657 mixed case.) Also, the string "ACPI_" has been prepended to many 10658 (not all) of the constants, typedefs, and structs. 10659 10660 The globals "DebugLevel" and "DebugLayer" have been renamed 10661 "AcpiDbgLevel" and "AcpiDbgLayer" respectively. 10662 10663 All other globals within the subsystem are now prefixed with 10664 "AcpiGbl_" Internal procedures within the subsystem are now 10665 prefixed with "Acpi" (with only a few exceptions). The original 10666 two-letter abbreviation for the subcomponent remains after "Acpi" 10667 - for example, CmCallocate became AcpiCmCallocate. 10668 10669 Added a source code translation/conversion utility. Used to 10670 generate the Linux source code, it can be modified to generate 10671 other types of source as well. Can also be used to cleanup 10672 existing source by removing extraneous spaces and blank lines. 10673 Found in tools/acpisrc/* 10674 10675 OsdUnMapMemory was renamed to OsdUnmapMemory and then 10676 AcpiOsUnmapMemory. (UnMap became Unmap). 10677 10678 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 10679 When set to one, this indicates that the caller wants to use the 10680 10681 semaphore as a mutex, not a counting semaphore. ACPI CA uses 10682 both types. However, implementers of this call may want to use 10683 different OS primitives depending on the type of semaphore 10684 requested. For example, some operating systems provide separate 10685 10686 "mutex" and "semaphore" interfaces - where the mutex interface is 10687 much faster because it doesn't have all the overhead of a full 10688 semaphore implementation. 10689 10690 Fixed a deadlock problem where a method that accesses the PCI 10691 address space can block forever if it is the first access to the 10692 space. 10693 10694 ------------------------------------------- 10695 Summary of changes for this label: 06_02_00 10696 10697 Support for environments that cannot handle unaligned data 10698 accesses (e.g. firmware and OS environments devoid of alignment 10699 handler technology namely SAL/EFI and the IA-64 Linux kernel) has 10700 been added (via configurable macros) in these three areas: - 10701 Transfer of data from the raw AML byte stream is done via byte 10702 moves instead of word/dword/qword moves. - External objects are 10703 aligned within the user buffer, including package elements (sub- 10704 objects). - Conversion of name strings to UINT32 Acpi Names is now 10705 done byte-wise. 10706 10707 The Store operator was modified to mimic Microsoft's 10708 implementation when storing to a Buffer Field. 10709 10710 Added a check of the BM_STS bit before entering C3. 10711 10712 The methods subdirectory has been obsoleted and removed. A new 10713 file, cmeval.c subsumes the functionality. 10714 10715 A 16-bit (DOS) version of AcpiExec has been developed. The 10716 makefile is under the acpiexec directory. 10717
Indexes created Tue Sep 30 17:09:57 GMT 2025