changes.txt revision 1.1.1.12
1 ---------------------------------------- 2 19 January 2017. Summary of changes for version 20170119: 3 4 This release is available at https://acpica.org/downloads 5 6 1) General ACPICA software: 7 8 Entire source code base: Added the 2017 copyright to all source code 9 legal/licensing module headers and utility/tool signons. This includes 10 the standard Linux dual-license header. This affects virtually every file 11 in the ACPICA core subsystem, iASL compiler, all ACPICA utilities, and 12 the ACPICA test suite. 13 14 15 2) iASL Compiler/Disassembler and Tools: 16 17 iASL: Removed/fixed an inadvertent remark when a method argument 18 containing a reference is used as a target operand within the method (and 19 never used as a simple argument), as in the example below. Jeffrey Hugo. 20 21 dsdt.asl 1507: Store(0x1, Arg0) 22 Remark 2146 - ^ Method Argument is never used (Arg0) 23 24 All tools: Removed the bit width of the compiler that generated the tool 25 from the common signon for all user space tools. This proved to be 26 confusing and unnecessary. This includes similar removal of HARDWARE_NAME 27 from the generic makefiles (Thomas Petazzoni). Example below. 28 29 Old: 30 ASL+ Optimizing Compiler version 20170119-32 31 ASL+ Optimizing Compiler version 20170119-64 32 33 New: 34 ASL+ Optimizing Compiler version 20170119 35 36 ---------------------------------------- 37 22 December 2016. Summary of changes for version 20161222: 38 39 40 1) ACPICA kernel-resident subsystem: 41 42 AML Debugger: Implemented a new mechanism to simplify and enhance 43 debugger integration into all environments, including kernel debuggers 44 and user-space utilities, as well as remote debug services. This 45 mechanism essentially consists of new OSL interfaces to support debugger 46 initialization/termination, as well as wait/notify interfaces to perform 47 the debugger handshake with the host. Lv Zheng. 48 49 New OSL interfaces: 50 AcpiOsInitializeDebugger (void) 51 AcpiOsTerminateDebugger (void) 52 AcpiOsWaitCommandReady (void) 53 AcpiOsNotifyCommandComplete (void) 54 55 New OS services layer: 56 osgendbg.c -- Example implementation, and used for AcpiExec 57 58 Update for Generic Address Space (GAS) support: Although the AccessWidth 59 and/or BitOffset fields of the GAS are not often used, this change now 60 fully supports these fields. This affects the internal support for FADT 61 registers, registers in other ACPI data tables, and the AcpiRead and 62 AcpiWrite public interfaces. Lv Zheng. 63 64 Sleep support: In order to simplify integration of ACPI sleep for the 65 various host operating systems, a new OSL interface has been introduced. 66 AcpiOsEnterSleep allows the host to perform any required operations 67 before the final write to the sleep control register(s) is performed by 68 ACPICA. Lv Zheng. 69 70 New OSL interface: 71 AcpiOsEnterSleep(SleepState, RegisterAValue, RegisterBValue) 72 73 Called from these internal interfaces: 74 AcpiHwLegacySleep 75 AcpiHwExtendedSleep 76 77 EFI support: Added a very small EFI/ACPICA example application. Provides 78 a simple demo for EFI integration, as well as assisting with resolution 79 of issues related to customer ACPICA/EFI integration. Lv Zheng. See: 80 81 source/tools/efihello/efihello.c 82 83 Local C library: Implemented several new functions to enhance ACPICA 84 portability, for environments where these clib functions are not 85 available (such as EFI). Lv Zheng: 86 putchar 87 getchar 88 strpbrk 89 strtok 90 memmove 91 92 Fixed a regression where occasionally a valid resource descriptor was 93 incorrectly detected as invalid at runtime, and a 94 AE_AML_NO_RESOURCE_END_TAG was returned. 95 96 Fixed a problem with the recently implemented support that enables 97 control method invocations as Target operands to many ASL operators. 98 Warnings of this form: "Needed type [Reference], found [Processor]" were 99 seen at runtime for some method invocations. 100 101 Example Code and Data Size: These are the sizes for the OS-independent 102 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 103 debug version of the code includes the debug output trace mechanism and 104 has a much larger code and data size. 105 106 Current Release: 107 Non-Debug Version: 141.5K Code, 58.5K Data, 200.0K Total 108 Debug Version: 201.7K Code, 82.7K Data, 284.4K Total 109 Previous Release: 110 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total 111 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total 112 113 114 2) iASL Compiler/Disassembler and Tools: 115 116 Disassembler: Enhanced output by adding the capability to detect and 117 disassemble ASL Switch/Case statements back to the original ASL source 118 code instead of if/else blocks. David Box. 119 120 AcpiHelp: Split a large file into separate files based upon 121 functionality/purpose. New files are: 122 ahaml.c 123 ahasl.c 124 125 ---------------------------------------- 126 17 November 2016. Summary of changes for version 20161117: 127 128 129 1) ACPICA kernel-resident subsystem: 130 131 Table Manager: Fixed a regression introduced in 20160729, "FADT support 132 cleanup". This was an attempt to remove all references in the source to 133 the FADT version 2, which never was a legal version number. It was 134 skipped because it was an early version of 64-bit support that was 135 eventually abandoned for the current 64-bit support. 136 137 Interpreter: Fixed a problem where runtime implicit conversion was 138 incorrectly disabled for the ASL operators below. This brings the 139 behavior into compliance with the ACPI specification: 140 FromBCD 141 ToBCD 142 ToDecimalString 143 ToHexString 144 ToInteger 145 ToBuffer 146 147 Table Manager: Added a new public interface, AcpiPutTable, used to 148 release and free an ACPI table returned by AcpiGetTable and related 149 interfaces. Lv Zheng. 150 151 Example Code and Data Size: These are the sizes for the OS-independent 152 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 153 debug version of the code includes the debug output trace mechanism and 154 has a much larger code and data size. 155 156 Current Release: 157 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total 158 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total 159 Previous Release: 160 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total 161 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total 162 163 164 2) iASL Compiler/Disassembler and Tools: 165 166 Disassembler: Fixed a regression for disassembly of Resource Template. 167 Detection of templates in the AML stream missed some types of templates. 168 169 iASL: Fixed a problem where an Access Size error was returned for the PCC 170 address space when the AccessSize of the GAS register is greater than a 171 DWORD. Hoan Tran. 172 173 iASL: Implemented several grammar changes for the operators below. These 174 changes are slated for the next version of the ACPI specification: 175 RefOf - Disallow method invocation as an operand 176 CondRefOf - Disallow method invocation as an operand 177 DerefOf - Disallow operands that use the result from operators 178 that 179 do not return a reference (Changed TermArg to 180 SuperName). 181 182 iASL: Control method invocations are now allowed for Target operands, as 183 per the ACPI specification. Removed error for using a control method 184 invocation as a Target operand. 185 186 Disassembler: Improved detection of Resource Templates, Unicode, and 187 Strings within Buffer objects. These subtypes do not contain a specific 188 opcode to indicate the originating ASL code, and they must be detected by 189 other means within the disassembler. 190 191 iASL: Implemented an optimization improvement for 32-bit ACPI tables 192 (DSDT/SSDT). For the 32-bit case only, compute the optimum integer opcode 193 only after 64-bit to 32-bit truncation. A truncation warning message is 194 still emitted, however. 195 196 AcpiXtract: Implemented handling for both types of line terminators (LF 197 or CR/LF) so that it can accept AcpiDump output files from any system. 198 Peter Wu. 199 200 AcpiBin: Added two new options for comparing AML files: 201 -a: compare and display ALL mismatches 202 -o: start compare at this offset into the second file 203 204 ---------------------------------------- 205 30 September 2016. Summary of changes for version 20160930: 206 207 208 1) ACPICA kernel-resident subsystem: 209 210 Fixed a regression in the internal AcpiTbFindTable function where a non 211 AE_OK exception could inadvertently be returned even if the function did 212 not fail. This problem affects the following operators: 213 DataTableRegion 214 LoadTable 215 216 Fixed a regression in the LoadTable operator where a load to any 217 namespace location other than the root no longer worked properly. 218 219 Increased the maximum loop count value that will result in the 220 AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to 221 prevent infinite loops within the AML interpreter and thus the host OS 222 kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to 223 1,048,575). 224 225 Moved the AcpiGbl_MaxLoopIterations configuration variable to the public 226 acpixf.h file. This allows hosts to easily configure the maximum loop 227 count at runtime. 228 229 Removed an illegal character in the strtoul64.c file. This character 230 caused errors with some C compilers. 231 232 Example Code and Data Size: These are the sizes for the OS-independent 233 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 234 debug version of the code includes the debug output trace mechanism and 235 has a much larger code and data size. 236 237 Current Release: 238 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total 239 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total 240 Previous Release: 241 Non-Debug Version: 140.0K Code, 58.1K Data, 198.1K Total 242 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total 243 244 245 2) iASL Compiler/Disassembler and Tools: 246 247 Disassembler: Fixed a problem with the conversion of Else{If{ blocks into 248 the simpler ASL ElseIf keyword. During the conversion, a trailing If 249 block could be lost and missing from the disassembled output. 250 251 iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+, 252 the missing rule caused a parse error when using the Index operator as an 253 operand to ObjectType. This construct now compiles properly. Example: 254 ObjectType(PKG1[4]). 255 256 iASL: Correctly handle unresolved symbols in the hardware map file (-lm 257 option). Previously, unresolved symbols could cause a protection fault. 258 Such symbols are now marked as unresolved in the map file. 259 260 iASL: Implemented support to allow control method invocations as an 261 operand to the ASL DeRefOf operator. Example: 262 DeRefOf(MTH1(Local0)) 263 264 Disassembler: Improved support for the ToPLD ASL macro. Detection of a 265 possible _PLD buffer now includes examination of both the normal buffer 266 length (16 or 20) as well as the surrounding AML package length. 267 268 Disassembler: Fixed a problem with the decoding of complex expressions 269 within the Divide operator for ASL+. For the case where both the quotient 270 and remainder targets are specified, the entire statement cannot be 271 disassembled. Previously, the output incorrectly contained a mix of ASL- 272 and ASL+ operators. This mixed statement causes a syntax error when 273 compiled. Example: 274 Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly 275 disassembled to: 276 Divide (INT1 + 6, 128, RSLT, QUOT) 277 278 iASL/Tools: Added support to process AML and non-AML ACPI tables 279 consistently. For the disassembler and AcpiExec, allow all types of ACPI 280 tables (AML and data tables). For the iASL -e option, allow only AML 281 tables (DSDT/SSDT). 282 283 ---------------------------------------- 284 31 August 2016. Summary of changes for version 20160831: 285 286 287 1) ACPICA kernel-resident subsystem: 288 289 Improve support for the so-called "module-level code", which is defined 290 to be math, logical and control AML opcodes that appear outside of any 291 control method. This change improves the support by adding more opcodes 292 that can be executed in the manner. Some other issues have been solved, 293 and the ASL grammar changes to support such code under all scope 294 operators (Device, etc.) are complete. Lv Zheng. 295 296 UEFI support: these OSL functions have been implemented. This is an 297 additional step toward supporting the AcpiExec utility natively (with 298 full hardware access) under UEFI. Marcelo Ferreira. 299 AcpiOsReadPciConfiguration 300 AcpiOsWritePciConfiguration 301 302 Fixed a possible mutex error during control method auto-serialization. Lv 303 Zheng. 304 305 Updated support for the Generic Address Structure by fully implementing 306 all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv 307 Zheng. 308 309 Updated the return value for the internal _OSI method. Instead of 310 0xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF 311 for 64-bit ACPI tables. This fixes an incompatibility with other ACPI 312 implementations, and will be reflected and clarified in the next version 313 of the ACPI specification. 314 315 Implemented two new table events that can be passed to an ACPICA table 316 handler. These events are used to indicate a table installation or 317 uninstallation. These events are used in addition to existed table load 318 and unload events. Lv Zheng. 319 320 Implemented a cleanup for all internal string-to-integer conversions. 321 Consolidate multiple versions of this functionality and limit possible 322 bases to either 10 or 16 to simplify the code. Adds a new file, 323 utstrtoul64. 324 325 Cleanup the inclusion order of the various compiler-specific headers. 326 This simplifies build configuration management. The compiler-specific 327 headers are now split out from the host-specific headers. Lv Zheng. 328 329 Example Code and Data Size: These are the sizes for the OS-independent 330 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 331 debug version of the code includes the debug output trace mechanism and 332 has a much larger code and data size. 333 334 Current Release: 335 Non-Debug Version: 140.1K Code, 58.1K Data, 198.1K Total 336 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total 337 338 339 2) iASL Compiler/Disassembler and Tools: 340 341 iASL/AcpiExec: Added a command line option to display the build date/time 342 of the tool (-vd). This can be useful to verify that the correct version 343 of the tools are being used. 344 345 AML Debugger: Implemented a new subcommand ("execute predef") to execute 346 all predefined control methods and names within the current namespace. 347 This can be useful for debugging problems with ACPI tables and the ACPI 348 namespace. 349 350 ---------------------------------------- 351 29 July 2016. Summary of changes for version 20160729: 352 353 354 1) ACPICA kernel-resident subsystem: 355 356 Implemented basic UEFI support for the various ACPICA tools. This 357 includes: 358 1) An OSL to implement the various AcpiOs* interfaces on UEFI. 359 2) Support to obtain the ACPI tables on UEFI. 360 3) Local implementation of required C library functions not available on 361 UEFI. 362 4) A front-end (main) function for the tools for UEFI-related 363 initialization. 364 365 The initial deployment of this support is the AcpiDump utility executing 366 as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit"). 367 Current environments supported are Linux/Unix. MSVC generation is not 368 supported at this time. See the generate/efi/README file for build 369 instructions. Lv Zheng. 370 371 Future plans include porting the AcpiExec utility to execute natively on 372 the platform with I/O and memory access. This will allow viewing/dump of 373 the platform namespace and native execution of ACPI control methods that 374 access the actual hardware. To fully implement this support, the OSL 375 functions below must be implemented with UEFI interfaces. Any community 376 help in the implementation of these functions would be appreciated: 377 AcpiOsReadPort 378 AcpiOsWritePort 379 AcpiOsReadMemory 380 AcpiOsWriteMemory 381 AcpiOsReadPciConfiguration 382 AcpiOsWritePciConfiguration 383 384 Restructured and standardized the C library configuration for ACPICA, 385 resulting in the various configuration options below. This includes a 386 global restructuring of the compiler-dependent and platform-dependent 387 include files. These changes may affect the existing platform-dependent 388 configuration files on some hosts. Lv Zheng. 389 390 The current C library configuration options appear below. For any issues, 391 it may be helpful to examine the existing compiler-dependent and 392 platform-dependent files as examples. Lv Zheng. 393 394 1) Linux kernel: 395 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C 396 library. 397 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library. 398 2) Unix/Windows/BSD applications: 399 ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C 400 library. 401 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library. 402 3) UEFI applications: 403 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C 404 library. 405 ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library. 406 4) UEFI applications (EDK2/StdLib): 407 ACPI_USE_STANDARD_HEADERS=y in order to use EDK2 StdLib C library. 408 ACPI_USE_SYSTEM_CLIBRARY=y in order to use EDK2 StdLib C library. 409 410 411 AML interpreter: "module-level code" support. Allows for execution of so- 412 called "executable" AML code (math/logical operations, etc.) outside of 413 control methods not just at the module level (top level) but also within 414 any scope declared outside of a control method - Scope{}, Device{}, 415 Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng. 416 417 Simplified the configuration of the "maximum AML loops" global option by 418 adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be 419 modified at runtime. 420 421 422 Example Code and Data Size: These are the sizes for the OS-independent 423 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 424 debug version of the code includes the debug output trace mechanism and 425 has a much larger code and data size. 426 427 Current Release: 428 Non-Debug Version: 139.1K Code, 22.9K Data, 162.0K Total 429 Debug Version: 199.0K Code, 81.8K Data, 280.8K Total 430 431 432 2) iASL Compiler/Disassembler and Tools: 433 434 iASL: Add full support for the RASF ACPI table (RAS Features Table). 435 Includes disassembler, data table compiler, and header support. 436 437 iASL Expand "module-level code" support. Allows for 438 compilation/disassembly of so-called "executable" AML code (math/logical 439 operations, etc.) outside of control methods not just at the module level 440 (top level) but also within any scope declared outside of a control 441 method - Scope{}, Device{}, Processor{}, PowerResource{}, and 442 ThermalZone{}. 443 444 AcpiDump: Added support for dumping all SSDTs on newer versions of 445 Windows. These tables are now easily available -- SSDTs are not available 446 through the registry on older versions. 447 448 ---------------------------------------- 449 27 May 2016. Summary of changes for version 20160527: 450 451 452 1) ACPICA kernel-resident subsystem: 453 454 Temporarily reverted the new arbitrary bit length/alignment support in 455 AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been 456 a number of regressions with the new code that need to be fully resolved 457 and tested before this support can be finally integrated into ACPICA. 458 Apologies for any inconveniences these issues may have caused. 459 460 The ACPI message macros are not configurable (ACPI_MSG_ERROR, 461 ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR, 462 and ACPI_MSG_BIOS_WARNING). Lv Zheng. 463 464 Fixed a couple of GCC warnings associated with the use of the -Wcast-qual 465 option. Adds a new return macro, return_STR. Junk-uk Kim. 466 467 Example Code and Data Size: These are the sizes for the OS-independent 468 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 469 debug version of the code includes the debug output trace mechanism and 470 has a much larger code and data size. 471 472 Current Release: 473 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total 474 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 475 Previous Release: 476 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 477 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total 478 479 ---------------------------------------- 480 22 April 2016. Summary of changes for version 20160422: 481 482 1) ACPICA kernel-resident subsystem: 483 484 Fixed a regression in the GAS (generic address structure) arbitrary bit 485 support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior 486 and incorrect return values. Lv Zheng. ACPICA BZ 1270. 487 488 ACPI 6.0: Added support for new/renamed resource macros. One new argument 489 was added to each of these macros, and the original name has been 490 deprecated. The AML disassembler will always disassemble to the new 491 names. Support for the new macros was added to iASL, disassembler, 492 resource manager, and the acpihelp utility. ACPICA BZ 1274. 493 494 I2cSerialBus -> I2cSerialBusV2 495 SpiSerialBus -> SpiSerialBusV2 496 UartSerialBus -> UartSerialBusV2 497 498 ACPI 6.0: Added support for a new integer field that was appended to the 499 package object returned by the _BIX method. This adds iASL compile-time 500 and AML runtime error checking. ACPICA BZ 1273. 501 502 ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm 503 Subspace Type2" (Headers, Disassembler, and data table compiler). 504 505 Example Code and Data Size: These are the sizes for the OS-independent 506 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 507 debug version of the code includes the debug output trace mechanism and 508 has a much larger code and data size. 509 510 Current Release: 511 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 512 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 513 Previous Release: 514 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total 515 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total 516 517 518 2) iASL Compiler/Disassembler and Tools: 519 520 iASL: Implemented an ASL grammar extension to allow/enable executable 521 "module-level code" to be created and executed under the various 522 operators that create new scopes. This type of AML code is already 523 supported in all known AML interpreters, and the grammar change will 524 appear in the next version of the ACPI specification. Simplifies the 525 conditional runtime creation of named objects under these object types: 526 527 Device 528 PowerResource 529 Processor 530 Scope 531 ThermalZone 532 533 iASL: Implemented a new ASL extension, a "For" loop macro to add greater 534 ease-of-use to the ASL language. The syntax is similar to the 535 corresponding C operator, and is implemented with the existing AML While 536 opcode -- thus requiring no changes to existing AML interpreters. 537 538 For (Initialize, Predicate, Update) {TermList} 539 540 Grammar: 541 ForTerm := 542 For ( 543 Initializer // Nothing | TermArg => ComputationalData 544 Predicate // Nothing | TermArg => ComputationalData 545 Update // Nothing | TermArg => ComputationalData 546 ) {TermList} 547 548 549 iASL: The _HID/_ADR detection and validation has been enhanced to search 550 under conditionals in order to allow these objects to be conditionally 551 created at runtime. 552 553 iASL: Fixed several issues with the constant folding feature. The 554 improvement allows better detection and resolution of statements that can 555 be folded at compile time. ACPICA BZ 1266. 556 557 iASL/Disassembler: Fixed a couple issues with the Else{If{}...} 558 conversion to the ASL ElseIf operator where incorrect ASL code could be 559 generated. 560 561 iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where 562 sometimes an extra (and extraneous) set of parentheses were emitted for 563 some combinations of operators. Although this did not cause any problems 564 with recompilation of the disassembled code, it made the code more 565 difficult to read. David Box. ACPICA BZ 1231. 566 567 iASL: Changed to ignore the unreferenced detection for predefined names 568 of resource descriptor elements, when the resource descriptor is 569 created/defined within a control method. 570 571 iASL: Disassembler: Fix a possible fault with externally declared Buffer 572 objects. 573 574 ---------------------------------------- 575 18 March 2016. Summary of changes for version 20160318: 576 577 1) ACPICA kernel-resident subsystem: 578 579 Added support for arbitrary bit lengths and bit offsets for registers 580 defined by the Generic Address Structure. Previously, only aligned bit 581 lengths of 8/16/32/64 were supported. This was sufficient for many years, 582 but recently some machines have been seen that require arbitrary bit- 583 level support. ACPICA BZ 1240. Lv Zheng. 584 585 Fixed an issue where the \_SB._INI method sometimes must be evaluated 586 before any _REG methods are evaluated. Lv Zheng. 587 588 Implemented several changes related to ACPI table support 589 (Headers/Disassembler/TableCompiler): 590 NFIT: For ACPI 6.1, updated to add some additional new fields and 591 constants. 592 FADT: Updated a warning message and set compliance to ACPI 6.1 (Version 593 6). 594 DMAR: Added new constants per the 10/2014 DMAR spec. 595 IORT: Added new subtable per the 10/2015 IORT spec. 596 HEST: For ACPI 6.1, added new constants and new subtable. 597 DBG2: Added new constants per the 12/2015 DBG2 spec. 598 FPDT: Fixed several incorrect fields, add the FPDT boot record structure. 599 ACPICA BZ 1249. 600 ERST/EINJ: Updated disassembler with new "Execute Timings" actions. 601 602 Updated header support for the DMAR table to match the current version of 603 the related spec. 604 605 Added extensions to the ASL Concatenate operator to allow any ACPI object 606 to be passed as an operand. Any object other than Integer/String/Buffer 607 simply returns a string containing the object type. This extends the 608 usefulness of the Printf macros. Previously, Concatenate would abort the 609 control method if a non-data object was encountered. 610 611 ACPICA source code: Deployed the C "const" keyword across the source code 612 where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD). 613 614 Example Code and Data Size: These are the sizes for the OS-independent 615 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 616 debug version of the code includes the debug output trace mechanism and 617 has a much larger code and data size. 618 619 Current Release: 620 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total 621 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total 622 Previous Release: 623 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total 624 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total 625 626 627 2) iASL Compiler/Disassembler and Tools: 628 629 iASL/Disassembler: Improved the heuristic used to determine the number of 630 arguments for an externally defined control method (a method in another 631 table). Although this is an improvement, there is no deterministic way to 632 "guess" the number of method arguments. Only the ACPI 6.0 External opcode 633 will completely solve this problem as it is deployed (automatically) in 634 newer BIOS code. 635 636 iASL/Disassembler: Fixed an ordering issue for emitted External() ASL 637 statements that could cause errors when the disassembled file is 638 compiled. ACPICA BZ 1243. David Box. 639 640 iASL: Fixed a regression caused by the merger of the two versions of the 641 local strtoul64. Because of a dependency on a global variable, strtoul64 642 could return an error for integers greater than a 32-bit value. ACPICA BZ 643 1260. 644 645 iASL: Fixed a regression where a fault could occur for an ASL Return 646 statement if it invokes a control method that is not resolved. ACPICA BZ 647 1264. 648 649 AcpiXtract: Improved input file validation: detection of binary files and 650 non-acpidump text files. 651 652 ---------------------------------------- 653 12 February 2016. Summary of changes for version 20160212: 654 655 1) ACPICA kernel-resident subsystem: 656 657 Implemented full support for the ACPI 6.1 specification (released in 658 January). This version of the specification is available at: 659 http://www.uefi.org/specifications 660 661 Only a relatively small number of changes were required in ACPICA to 662 support ACPI 6.1, in these areas: 663 - New predefined names 664 - New _HID values 665 - A new subtable for HEST 666 - A few other header changes for new values 667 668 Ensure \_SB_._INI is executed before any _REG methods are executed. There 669 appears to be existing BIOS code that relies on this behavior. Lv Zheng. 670 671 Reverted a change made in version 20151218 which enabled method 672 invocations to be targets of various ASL operators (SuperName and Target 673 grammar elements). While the new behavior is supported by the ACPI 674 specification, other AML interpreters do not support this behavior and 675 never will. The ACPI specification will be updated for ACPI 6.2 to remove 676 this support. Therefore, the change was reverted to the original ACPICA 677 behavior. 678 679 ACPICA now supports the GCC 6 compiler. 680 681 Current Release: (Note: build changes increased sizes) 682 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total 683 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total 684 Previous Release: 685 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total 686 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total 687 688 689 2) iASL Compiler/Disassembler and Tools: 690 691 Completed full support for the ACPI 6.0 External() AML opcode. The 692 compiler emits an external AML opcode for each ASL External statement. 693 This opcode is used by the disassembler to assist with the disassembly of 694 external control methods by specifying the required number of arguments 695 for the method. AML interpreters do not use this opcode. To ensure that 696 interpreters do not even see the opcode, a block of one or more external 697 opcodes is surrounded by an "If(0)" construct. As this feature becomes 698 commonly deployed in BIOS code, the ability of disassemblers to correctly 699 disassemble AML code will be greatly improved. David Box. 700 701 iASL: Implemented support for an optional cross-reference output file. 702 The -lx option will create a the cross-reference file with the suffix 703 "xrf". Three different types of cross-reference are created in this file: 704 - List of object references made from within each control method 705 - Invocation (caller) list for each user-defined control method 706 - List of references to each non-method object in the namespace 707 708 iASL: Method invocations as ASL Target operands are now disallowed and 709 flagged as errors in preparation for ACPI 6.2 (see the description of the 710 problem above). 711 712 ---------------------------------------- 713 8 January 2016. Summary of changes for version 20160108: 714 715 1) ACPICA kernel-resident subsystem: 716 717 Updated all ACPICA copyrights and signons to 2016: Added the 2016 718 copyright to all source code module headers and utility/tool signons. 719 This includes the standard Linux dual-license header. This affects 720 virtually every file in the ACPICA core subsystem, iASL compiler, all 721 ACPICA utilities, and the ACPICA test suite. 722 723 Fixed a regression introduced in version 20151218 concerning the 724 execution of so-called module-level ASL/AML code. Namespace objects 725 created under a module-level If() construct were not properly/fully 726 entered into the namespace and could cause an interpreter fault when 727 accessed. 728 729 Example Code and Data Size: These are the sizes for the OS-independent 730 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 731 debug version of the code includes the debug output trace mechanism and 732 has a much larger code and data size. 733 734 Current Release: 735 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total 736 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total 737 Previous Release: 738 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total 739 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total 740 741 742 2) iASL Compiler/Disassembler and Tools: 743 744 Fixed a problem with the compilation of the GpioIo and GpioInt resource 745 descriptors. The _PIN field name was incorrectly defined to be an array 746 of 32-bit values, but the _PIN values are in fact 16 bits each. This 747 would cause incorrect bit width warnings when using Word (16-bit) fields 748 to access the descriptors. 749 750 751 ---------------------------------------- 752 18 December 2015. Summary of changes for version 20151218: 753 754 1) ACPICA kernel-resident subsystem: 755 756 Implemented per-AML-table execution of "module-level code" as individual 757 ACPI tables are loaded into the namespace during ACPICA initialization. 758 In other words, any module-level code within an AML table is executed 759 immediately after the table is loaded, instead of batched and executed 760 after all of the tables have been loaded. This provides compatibility 761 with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng, 762 David Box. 763 764 To fully support the feature above, the default operation region handlers 765 for the SystemMemory, SystemIO, and PCI_Config address spaces are now 766 installed before any ACPI tables are loaded. This enables module-level 767 code to access these address spaces during the table load and module- 768 level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David 769 Box. 770 771 Implemented several changes to the internal _REG support in conjunction 772 with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples 773 utilities for the changes above. Although these tools were changed, host 774 operating systems that simply use the default handlers for SystemMemory, 775 SystemIO, and PCI_Config spaces should not require any update. Lv Zheng. 776 777 For example, in the code below, DEV1 is conditionally added to the 778 namespace by the DSDT via module-level code that accesses an operation 779 region. The SSDT references DEV1 via the Scope operator. DEV1 must be 780 created immediately after the DSDT is loaded in order for the SSDT to 781 successfully reference DEV1. Previously, this code would cause an 782 AE_NOT_EXIST exception during the load of the SSDT. Now, this code is 783 fully supported by ACPICA. 784 785 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1) 786 { 787 OperationRegion (OPR1, SystemMemory, 0x400, 32) 788 Field (OPR1, AnyAcc, NoLock, Preserve) 789 { 790 FLD1, 1 791 } 792 If (FLD1) 793 { 794 Device (\DEV1) 795 { 796 } 797 } 798 } 799 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1) 800 { 801 External (\DEV1, DeviceObj) 802 Scope (\DEV1) 803 { 804 } 805 } 806 807 Fixed an AML interpreter problem where control method invocations were 808 not handled correctly when the invocation was itself a SuperName argument 809 to another ASL operator. In these cases, the method was not invoked. 810 ACPICA BZ 1002. Affects the following ASL operators that have a SuperName 811 argument: 812 Store 813 Acquire, Wait 814 CondRefOf, RefOf 815 Decrement, Increment 816 Load, Unload 817 Notify 818 Signal, Release, Reset 819 SizeOf 820 821 Implemented automatic String-to-ObjectReference conversion support for 822 packages returned by predefined names (such as _DEP). A common BIOS error 823 is to add double quotes around an ObjectReference namepath, which turns 824 the reference into an unexpected string object. This support detects the 825 problem and corrects it before the package is returned to the caller that 826 invoked the method. Lv Zheng. 827 828 Implemented extensions to the Concatenate operator. Concatenate now 829 accepts any type of object, it is not restricted to simply 830 Integer/String/Buffer. For objects other than these 3 basic data types, 831 the argument is treated as a string containing the name of the object 832 type. This expands the utility of Concatenate and the Printf/Fprintf 833 macros. ACPICA BZ 1222. 834 835 Cleaned up the output of the ASL Debug object. The timer() value is now 836 optional and no longer emitted by default. Also, the basic data types of 837 Integer/String/Buffer are simply emitted as their values, without a data 838 type string -- since the data type is obvious from the output. ACPICA BZ 839 1221. 840 841 Example Code and Data Size: These are the sizes for the OS-independent 842 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 843 debug version of the code includes the debug output trace mechanism and 844 has a much larger code and data size. 845 846 Current Release: 847 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total 848 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total 849 Previous Release: 850 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 851 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 852 853 854 2) iASL Compiler/Disassembler and Tools: 855 856 iASL: Fixed some issues with the ASL Include() operator. This operator 857 was incorrectly defined in the iASL parser rules, causing a new scope to 858 be opened for the code within the include file. This could lead to 859 several issues, including allowing ASL code that is technically illegal 860 and not supported by AML interpreters. Note, this does not affect the 861 related #include preprocessor operator. ACPICA BZ 1212. 862 863 iASL/Disassembler: Implemented support for the ASL ElseIf operator. This 864 operator is essentially an ASL macro since there is no AML opcode 865 associated with it. The code emitted by the iASL compiler for ElseIf is 866 an Else opcode followed immediately by an If opcode. The disassembler 867 will now emit an ElseIf if it finds an Else immediately followed by an 868 If. This simplifies the decoded ASL, especially for deeply nested 869 If..Else and large Switch constructs. Thus, the disassembled code more 870 closely follows the original source ASL. ACPICA BZ 1211. Example: 871 872 Old disassembly: 873 Else 874 { 875 If (Arg0 == 0x02) 876 { 877 Local0 = 0x05 878 } 879 } 880 881 New disassembly: 882 ElseIf (Arg0 == 0x02) 883 { 884 Local0 = 0x05 885 } 886 887 AcpiExec: Added support for the new module level code behavior and the 888 early region installation. This required a small change to the 889 initialization, since AcpiExec must install its own operation region 890 handlers. 891 892 AcpiExec: Added support to make the debug object timer optional. Default 893 is timer disabled. This cleans up the debug object output -- the timer 894 data is rarely used. 895 896 AcpiExec: Multiple ACPI tables are now loaded in the order that they 897 appear on the command line. This can be important when there are 898 interdependencies/references between the tables. 899 900 iASL/Templates. Add support to generate template files with multiple 901 SSDTs within a single output file. Also added ommand line support to 902 specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ 903 1223, 1225. 904 905 906 ---------------------------------------- 907 24 November 2015. Summary of changes for version 20151124: 908 909 1) ACPICA kernel-resident subsystem: 910 911 Fixed a possible regression for a previous update to FADT handling. The 912 FADT no longer has a fixed table ID, causing some issues with code that 913 was hardwired to a specific ID. Lv Zheng. 914 915 Fixed a problem where the method auto-serialization could interfere with 916 the current SyncLevel. This change makes the auto-serialization support 917 transparent to the SyncLevel support and management. 918 919 Removed support for the _SUB predefined name in AcpiGetObjectInfo. This 920 interface is intended for early access to the namespace during the 921 initial namespace device discovery walk. The _SUB method has been seen to 922 access operation regions in some cases, causing errors because the 923 operation regions are not fully initialized. 924 925 AML Debugger: Fixed some issues with the terminate/quit/exit commands 926 that can cause faults. Lv Zheng. 927 928 AML Debugger: Add thread ID support so that single-step mode only applies 929 to the AML Debugger thread. This prevents runtime errors within some 930 kernels. Lv Zheng. 931 932 Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx 933 methods that are invoked by this interface are optional, removed warnings 934 emitted for the case where one or more of these methods do not exist. 935 ACPICA BZ 1208, original change by Prarit Bhargava. 936 937 Made a major pass through the entire ACPICA source code base to 938 standardize formatting that has diverged a bit over time. There are no 939 functional changes, but this will of course cause quite a few code 940 differences from the previous ACPICA release. 941 942 Example Code and Data Size: These are the sizes for the OS-independent 943 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 944 debug version of the code includes the debug output trace mechanism and 945 has a much larger code and data size. 946 947 Current Release: 948 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 949 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 950 Previous Release: 951 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 952 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 953 954 955 2) iASL Compiler/Disassembler and Tools: 956 957 iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple 958 definition blocks within a single ASL file and the resulting AML file. 959 Support for this type of file was also added to the various tools that 960 use binary AML files: acpiexec, acpixtract, and the AML disassembler. The 961 example code below shows two definition blocks within the same file: 962 963 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template", 964 0x12345678) 965 { 966 } 967 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01) 968 { 969 } 970 971 iASL: Enhanced typechecking for the Name() operator. All expressions for 972 the value of the named object must be reduced/folded to a single constant 973 at compile time, as per the ACPI specification (the AML definition of 974 Name()). 975 976 iASL: Fixed some code indentation issues for the -ic and -ia options (C 977 and assembly headers). Now all emitted code correctly begins in column 1. 978 979 iASL: Added an error message for an attempt to open a Scope() on an 980 object defined in an SSDT. The DSDT is always loaded into the namespace 981 first, so any attempt to open a Scope on an SSDT object will fail at 982 runtime. 983 984 985 ---------------------------------------- 986 30 September 2015. Summary of changes for version 20150930: 987 988 1) ACPICA kernel-resident subsystem: 989 990 Debugger: Implemented several changes and bug fixes to assist support for 991 the in-kernel version of the AML debugger. Lv Zheng. 992 - Fix the "predefined" command for in-kernel debugger. 993 - Do not enter debug command loop for the help and version commands. 994 - Disallow "execute" command during execution/single-step of a method. 995 996 Interpreter: Updated runtime typechecking for all operators that have 997 target operands. The operand is resolved and validated that it is legal. 998 For example, the target cannot be a non-data object such as a Device, 999 Mutex, ThermalZone, etc., as per the ACPI specification. 1000 1001 Debugger: Fixed the double-mutex user I/O handshake to work when local 1002 deadlock detection is enabled. 1003 1004 Debugger: limited display of method locals and arguments (LocalX and 1005 ArgX) to only those that have actually been initialized. This prevents 1006 lines of extraneous output. 1007 1008 Updated the definition of the NFIT table to correct the bit polarity of 1009 one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED 1010 1011 Example Code and Data Size: These are the sizes for the OS-independent 1012 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1013 debug version of the code includes the debug output trace mechanism and 1014 has a much larger code and data size. 1015 1016 Current Release: 1017 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 1018 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 1019 Previous Release: 1020 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 1021 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 1022 1023 1024 2) iASL Compiler/Disassembler and Tools: 1025 1026 iASL: Improved the compile-time typechecking for operands of many of the 1027 ASL operators: 1028 1029 -- Added an option to disable compiler operand/operator typechecking (- 1030 ot). 1031 1032 -- For the following operators, the TermArg operands are now validated 1033 when possible to be Integer data objects: BankField, OperationRegion, 1034 DataTableRegion, Buffer, and Package. 1035 1036 -- Store (Source, Target): Both the source and target operands are 1037 resolved and checked that the operands are both legal. For example, 1038 neither operand can be a non-data object such as a Device, Mutex, 1039 ThermalZone, etc. Note, as per the ACPI specification, the CopyObject 1040 operator can be used to store an object to any type of target object. 1041 1042 -- Store (Source, Target): If the source is a Package object, the target 1043 must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target 1044 is a Package, the source must also be a Package. 1045 1046 -- Store (Source, Target): A warning is issued if the source and target 1047 resolve to the identical named object. 1048 1049 -- Store (Source, <method invocation>): An error is generated for the 1050 target method invocation, as this construct is not supported by the AML 1051 interpreter. 1052 1053 -- For all ASL math and logic operators, the target operand must be a 1054 data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This 1055 includes the function return value also. 1056 1057 -- External declarations are also included in the typechecking where 1058 possible. External objects defined using the UnknownObj keyword cannot be 1059 typechecked, however. 1060 1061 iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index 1062 operator: 1063 - Legacy code: Index(PKG1, 3) 1064 - New ASL+ code: PKG1[3] 1065 This completes the ACPI 6.0 ASL+ support as it was the only operator not 1066 supported. 1067 1068 iASL: Fixed the file suffix for the preprocessor output file (.i). Two 1069 spaces were inadvertently appended to the filename, causing file access 1070 and deletion problems on some systems. 1071 1072 ASL Test Suite (ASLTS): Updated the master makefile to generate all 1073 possible compiler output files when building the test suite -- thus 1074 exercising these features of the compiler. These files are automatically 1075 deleted when the test suite exits. 1076 1077 1078 ---------------------------------------- 1079 18 August 2015. Summary of changes for version 20150818: 1080 1081 1) ACPICA kernel-resident subsystem: 1082 1083 Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv 1084 Zheng. ACPICA BZ 1186. 1085 1086 Completed development to ensure that the ACPICA Disassembler and Debugger 1087 are fully standalone components of ACPICA. Removed cross-component 1088 dependences. Lv Zheng. 1089 1090 The max-number-of-AML-loops is now runtime configurable (previously was 1091 compile-time only). This is essentially a loop timeout to force-abort 1092 infinite AML loops. ACPCIA BZ 1192. 1093 1094 Debugger: Cleanup output to dump ACPI names and namepaths without any 1095 trailing underscores. Lv Zheng. ACPICA BZ 1135. 1096 1097 Removed unnecessary conditional compilations across the Debugger and 1098 Disassembler components where entire modules could be left uncompiled. 1099 1100 The aapits test is deprecated and has been removed from the ACPICA git 1101 tree. The test has never been completed and has not been maintained, thus 1102 becoming rather useless. ACPICA BZ 1015, 794. 1103 1104 A batch of small changes to close bugzilla and other reports: 1105 - Remove duplicate code for _PLD processing. ACPICA BZ 1176. 1106 - Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185. 1107 - iASL: Support POSIX yacc again in makefile. Jung-uk Kim. 1108 - ACPI table support: general cleanup and simplification. Lv Zheng, Bob 1109 Moore. 1110 - ACPI table support: fix for a buffer read overrun in AcpiTbFindTable. 1111 ACPICA BZ 1184. 1112 - Enhance parameter validation for DataTableRegion and LoadTable ASL/AML 1113 operators. 1114 - Debugger: Split debugger initialization/termination interfaces. Lv 1115 Zheng. 1116 - AcpiExec: Emit OemTableId for SSDTs during the load phase for table 1117 identification. 1118 - AcpiExec: Add debug message during _REG method phase during table 1119 load/init. 1120 - AcpiNames: Fix a regression where some output was missing and no longer 1121 emitted. 1122 - Debugger: General cleanup and simplification. Lv Zheng. 1123 - Disassembler: Cleanup use of several global option variables. Lv Zheng. 1124 1125 Example Code and Data Size: These are the sizes for the OS-independent 1126 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1127 debug version of the code includes the debug output trace mechanism and 1128 has a much larger code and data size. 1129 1130 Current Release: 1131 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 1132 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 1133 Previous Release: 1134 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 1135 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 1136 1137 1138 2) iASL Compiler/Disassembler and Tools: 1139 1140 AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT 1141 were not handled properly and caused load errors. Now, properly invoke 1142 and use the ACPICA auto-reallocate mechanism for ACPI table data 1143 structures. ACPICA BZ 1188 1144 1145 AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA 1146 BZ 1190. 1147 1148 AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For 1149 AcpiExec, this means that no control methods (like _REG/_INI/_STA) are 1150 executed during initialization. ACPICA BZ 1187, 1189. 1151 1152 iASL/Disassembler: Implemented a prototype "listing" mode that emits AML 1153 that corresponds to each disassembled ASL statement, to simplify 1154 debugging. ACPICA BZ 1191. 1155 1156 Debugger: Add option to the "objects" command to display a summary of the 1157 current namespace objects (Object type and count). This is displayed if 1158 the command is entered with no arguments. 1159 1160 AcpiNames: Add -x option to specify debug level, similar to AcpiExec. 1161 1162 1163 ---------------------------------------- 1164 17 July 2015. Summary of changes for version 20150717: 1165 1166 1) ACPICA kernel-resident subsystem: 1167 1168 Improved the partitioning between the Debugger and Disassembler 1169 components. This allows the Debugger to be used standalone within kernel 1170 code without the Disassembler (which is used for single stepping also). 1171 This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng. 1172 1173 Debugger: Implemented a new command to trace the execution of control 1174 methods (Trace). This is especially useful for the in-kernel version of 1175 the debugger when file I/O may not be available for method trace output. 1176 See the ACPICA reference for more information. Lv Zheng. 1177 1178 Moved all C library prototypes (used for the local versions of these 1179 functions when requested) to a new header, acclib.h 1180 Cleaned up the use of non-ANSI C library functions. These functions are 1181 implemented locally in ACPICA. Moved all such functions to a common 1182 source file, utnonansi.c 1183 1184 Debugger: Fixed a problem with the "!!" command (get last command 1185 executed) where the debugger could enter an infinite loop and eventually 1186 crash. 1187 1188 Removed the use of local macros that were used for some of the standard C 1189 library functions to automatically cast input parameters. This mostly 1190 affected the is* functions where the input parameter is defined to be an 1191 int. This required a few modifications to the main ACPICA source code to 1192 provide casting for these functions and eliminate possible compiler 1193 warnings for these parameters. 1194 1195 Across the source code, added additional status/error checking to resolve 1196 issues discovered by static source code analysis tools such as Coverity. 1197 1198 Example Code and Data Size: These are the sizes for the OS-independent 1199 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1200 debug version of the code includes the debug output trace mechanism and 1201 has a much larger code and data size. 1202 1203 Current Release: 1204 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 1205 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 1206 Previous Release: 1207 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 1208 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 1209 1210 1211 2) iASL Compiler/Disassembler and Tools: 1212 1213 iASL: Fixed a regression where the device map file feature no longer 1214 worked properly when used in conjunction with the disassembler. It only 1215 worked properly with the compiler itself. 1216 1217 iASL: Implemented a new warning for method LocalX variables that are set 1218 but never used (similar to a C compiler such as gcc). This also applies 1219 to ArgX variables that are not defined by the parent method, and are 1220 instead (legally) used as local variables. 1221 1222 iASL/Preprocessor: Finished the pass-through of line numbers from the 1223 preprocessor to the compiler. This ensures that compiler errors/warnings 1224 have the correct original line numbers and filenames, regardless of any 1225 #include files. 1226 1227 iASL/Preprocessor: Fixed a couple of issues with comment handling and the 1228 pass-through of comments to the preprocessor output file (which becomes 1229 the compiler input file). Also fixed a problem with // comments that 1230 appear after a math expression. 1231 1232 iASL: Added support for the TCPA server table to the table compiler and 1233 template generator. (The client table was already previously supported) 1234 1235 iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to 1236 identify the iASL compiler. 1237 1238 Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined 1239 multiple times. The new names are ACPI_SIGN_NEGATIVE and 1240 ACPI_SIGN_POSITIVE. 1241 1242 AcpiHelp: Update to expand help messages for the iASL preprocessor 1243 directives. 1244 1245 1246 ---------------------------------------- 1247 19 June 2015. Summary of changes for version 20150619: 1248 1249 Two regressions in version 20150616 have been addressed: 1250 1251 Fixes some problems/issues with the C library macro removal (ACPI_STRLEN, 1252 etc.) This update changes ACPICA to only use the standard headers for 1253 functions, or the prototypes for the local versions of the C library 1254 functions. Across the source code, this required some additional casts 1255 for some Clib invocations for portability. Moved all local prototypes to 1256 a new file, acclib.h 1257 1258 Fixes several problems with recent changes to the handling of the FACS 1259 table that could cause some systems not to boot. 1260 1261 1262 ---------------------------------------- 1263 16 June 2015. Summary of changes for version 20150616: 1264 1265 1266 1) ACPICA kernel-resident subsystem: 1267 1268 Across the entire ACPICA source code base, the various macros for the C 1269 library functions (such as ACPI_STRLEN, etc.) have been removed and 1270 replaced by the standard C library names (strlen, etc.) The original 1271 purpose for these macros is no longer applicable. This simplification 1272 reduces the number of macros used in the ACPICA source code 1273 significantly, improving readability and maintainability. 1274 1275 Implemented support for a new ACPI table, the OSDT. This table, the 1276 "override" SDT, can be loaded directly by the host OS at boot time. It 1277 enables the replacement of existing namespace objects that were installed 1278 via the DSDT and/or SSDTs. The primary purpose for this is to replace 1279 buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated 1280 for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob 1281 Moore. 1282 1283 Added support for systems with (improperly) two FACS tables -- a "32-bit" 1284 table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit 1285 X field). This change will support both automatically. There continues to 1286 be systems found with this issue. This support requires a change to the 1287 AcpiSetFirmwareWakingVector interface. Also, a public global variable has 1288 been added to allow the host to select which FACS is desired 1289 (AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more 1290 details Lv Zheng. 1291 1292 Added a new feature to allow for systems that do not contain an FACS. 1293 Although this is already supported on hardware-reduced platforms, the 1294 feature has been extended for all platforms. The reasoning is that we do 1295 not want to abort the entire ACPICA initialization just because the 1296 system is seriously buggy and has no FACS. 1297 1298 Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were 1299 not correctly transcribed from the ACPI specification in ACPICA version 1300 20150515. 1301 1302 Implemented support for the _CLS object in the AcpiGetObjectInfo external 1303 interface. 1304 1305 Updated the definitions of the TCPA and TPM2 ACPI tables to the more 1306 recent TCG ACPI Specification, December 14, 2014. Table disassembler and 1307 compiler also updated. Note: The TCPA "server" table is not supported by 1308 the disassembler/table-compiler at this time. 1309 1310 ACPI 6.0: Added definitions for the new GIC version field in the MADT. 1311 1312 Example Code and Data Size: These are the sizes for the OS-independent 1313 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1314 debug version of the code includes the debug output trace mechanism and 1315 has a much larger code and data size. 1316 1317 Current Release: 1318 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 1319 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 1320 Previous Release: 1321 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 1322 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 1323 1324 1325 2) iASL Compiler/Disassembler and Tools: 1326 1327 Disassembler: Fixed a problem with the new symbolic operator disassembler 1328 where incorrect ASL code could be emitted in some cases for the "non- 1329 commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and 1330 ShiftRight. The actual problem cases seem to be rather unusual in common 1331 ASL code, however. David Box. 1332 1333 Modified the linux version of acpidump to obtain ACPI tables from not 1334 just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv 1335 Zheng. 1336 1337 iASL: Fixed a problem where the user preprocessor output file (.i) 1338 contained extra data that was not expected. The compiler was using this 1339 file as a temporary file and passed through #line directives in order to 1340 keep compiler error messages in sync with the input file and line number 1341 across multiple include files. The (.i) is no longer a temporary file as 1342 the compiler uses a new, different file for the original purpose. 1343 1344 iASL: Fixed a problem where comments within the original ASL source code 1345 file were not passed through to the preprocessor output file, nor any 1346 listing files. 1347 1348 iASL: Fixed some issues for the handling of the "#include" preprocessor 1349 directive and the similar (but not the same) "Include" ASL operator. 1350 1351 iASL: Add support for the new OSDT in both the disassembler and compiler. 1352 1353 iASL: Fixed a problem with the constant folding support where a Buffer 1354 object could be incorrectly generated (incorrectly formed) during a 1355 conversion to a Store() operator. 1356 1357 AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new 1358 description text for the _REV predefined name. _REV now permanently 1359 returns 2, as per the ACPI 6.0 specification. 1360 1361 Debugger: Enhanced the output of the Debug ASL object for references 1362 produced by the Index operator. For Buffers and strings, only output the 1363 actual byte pointed to by the index. For packages, only print the single 1364 package element decoded by the index. Previously, the entire 1365 buffer/string/package was emitted. 1366 1367 iASL/Table-compiler: Fixed a regression where the "generic" data types 1368 were no longer recognized, causing errors. 1369 1370 1371 ---------------------------------------- 1372 15 May 2015. Summary of changes for version 20150515: 1373 1374 This release implements most of ACPI 6.0 as described below. 1375 1376 1) ACPICA kernel-resident subsystem: 1377 1378 Implemented runtime argument checking and return value checking for all 1379 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI, 1380 _MTL, _PRR, _RDI, _RST, _TFP, _TSN. 1381 1382 Example Code and Data Size: These are the sizes for the OS-independent 1383 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1384 debug version of the code includes the debug output trace mechanism and 1385 has a much larger code and data size. 1386 1387 Current Release: 1388 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 1389 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 1390 Previous Release: 1391 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 1392 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 1393 1394 1395 2) iASL Compiler/Disassembler and Tools: 1396 1397 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined 1398 names (argument count validation and return value typechecking.) 1399 1400 iASL disassembler and table compiler: implemented support for all new 1401 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV. 1402 1403 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing 1404 tables: FADT, MADT. 1405 1406 iASL preprocessor: Added a new directive to enable inclusion of binary 1407 blobs into ASL code. The new directive is #includebuffer. It takes a 1408 binary file as input and emits a named ascii buffer object into the ASL 1409 code. 1410 1411 AcpiHelp: Added support for all new ACPI 6.0 predefined names. 1412 1413 AcpiHelp: Added a new option, -d, to display all iASL preprocessor 1414 directives. 1415 1416 AcpiHelp: Added a new option, -t, to display all known/supported ACPI 1417 tables. 1418 1419 1420 ---------------------------------------- 1421 10 April 2015. Summary of changes for version 20150410: 1422 1423 Reverted a change introduced in version 20150408 that caused 1424 a regression in the disassembler where incorrect operator 1425 symbols could be emitted. 1426 1427 1428 ---------------------------------------- 1429 08 April 2015. Summary of changes for version 20150408: 1430 1431 1432 1) ACPICA kernel-resident subsystem: 1433 1434 Permanently set the return value for the _REV predefined name. It now 1435 returns 2 (was 5). This matches other ACPI implementations. _REV will be 1436 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2 1437 for ACPI 2.0 and later. It should never be used to differentiate or 1438 identify operating systems. 1439 1440 Added the "Windows 2015" string to the _OSI support. ACPICA will now 1441 return TRUE to a query with this string. 1442 1443 Fixed several issues with the local version of the printf function. 1444 1445 Added the C99 compiler option (-std=c99) to the Unix makefiles. 1446 1447 Current Release: 1448 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total 1449 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total 1450 Previous Release: 1451 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 1452 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 1453 1454 1455 2) iASL Compiler/Disassembler and Tools: 1456 1457 iASL: Implemented an enhancement to the constant folding feature to 1458 transform the parse tree to a simple Store operation whenever possible: 1459 Add (2, 3, X) ==> is converted to: Store (5, X) 1460 X = 2 + 3 ==> is converted to: Store (5, X) 1461 1462 Updated support for the SLIC table (Software Licensing Description Table) 1463 in both the Data Table compiler and the disassembler. The SLIC table 1464 support now conforms to "Microsoft Software Licensing Tables (SLIC and 1465 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data 1466 following the ACPI header is now defined to be "Proprietary Data", and as 1467 such, can only be entered or displayed as a hex data block. 1468 1469 Implemented full support for the MSDM table as described in the document 1470 above. Note: The format of MSDM is similar to SLIC. Any MSDM data 1471 following the ACPI header is defined to be "Proprietary Data", and can 1472 only be entered or displayed as a hex data block. 1473 1474 Implemented the -Pn option for the iASL Table Compiler (was only 1475 implemented for the ASL compiler). This option disables the iASL 1476 preprocessor. 1477 1478 Disassembler: For disassembly of Data Tables, added a comment field 1479 around the Ascii equivalent data that is emitted as part of the "Raw 1480 Table Data" block. This prevents the iASL Preprocessor from possible 1481 confusion if/when the table is compiled. 1482 1483 Disassembler: Added an option (-df) to force the disassembler to assume 1484 that the table being disassembled contains valid AML. This feature is 1485 useful for disassembling AML files that contain ACPI signatures other 1486 than DSDT or SSDT (such as OEMx or other signatures). 1487 1488 Changes for the EFI version of the tools: 1489 1) Fixed a build error/issue 1490 2) Fixed a cast warning 1491 1492 iASL: Fixed a path issue with the __FILE__ operator by making the 1493 directory prefix optional within the internal SplitInputFilename 1494 function. 1495 1496 Debugger: Removed some unused global variables. 1497 1498 Tests: Updated the makefile for proper generation of the AAPITS suite. 1499 1500 1501 ---------------------------------------- 1502 04 February 2015. Summary of changes for version 20150204: 1503 1504 ACPICA kernel-resident subsystem: 1505 1506 Updated all ACPICA copyrights and signons to 2014. Added the 2014 1507 copyright to all module headers and signons, including the standard Linux 1508 header. This affects virtually every file in the ACPICA core subsystem, 1509 iASL compiler, all ACPICA utilities, and the test suites. 1510 1511 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues. 1512 A raw gpe handling mechanism was created to allow better handling of GPE 1513 storms that aren't easily managed by the normal handler. The raw handler 1514 allows disabling/renabling of the the GPE so that interrupt storms can be 1515 avoided in cases where events cannot be timely serviced. In this 1516 scenario, handlers should use the AcpiSetGpe() API to disable/enable the 1517 GPE. This API will leave the reference counts undisturbed, thereby 1518 preventing unintentional clearing of the GPE when the intent in only to 1519 temporarily disable it. Raw handlers allow enabling and disabling of a 1520 GPE by removing GPE register locking. As such, raw handlers much provide 1521 their own locks while using GPE API's to protect access to GPE data 1522 structures. 1523 Lv Zheng 1524 1525 Events: Always modify GPE registers under the GPE lock. 1526 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register 1527 values. Reported as bug by joe.liu (a] apple.com. 1528 1529 Unix makefiles: Separate option to disable optimizations and 1530 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the 1531 NOOPT disable option and creates a separate flag (NOFORTIFY) for this 1532 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined 1533 errors when building ACPICA. This allows disabling the option without 1534 also having to disable optimazations. 1535 David Box 1536 1537 Current Release: 1538 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 1539 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total 1540 1541 -- 1542 -------------------------------------- 1543 07 November 2014. Summary of changes for version 20141107: 1544 1545 This release is available at https://acpica.org/downloads 1546 1547 This release introduces and implements language extensions to ASL that 1548 provide support for symbolic ("C-style") operators and expressions. These 1549 language extensions are known collectively as ASL+. 1550 1551 1552 1) iASL Compiler/Disassembler and Tools: 1553 1554 Disassembler: Fixed a problem with disassembly of the UartSerialBus 1555 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E. 1556 Box. 1557 1558 Disassembler: Fixed the Unicode macro support to add escape sequences. 1559 All non-printable ASCII values are emitted as escape sequences, as well 1560 as the standard escapes for quote and backslash. Ensures that the 1561 disassembled macro can be correctly recompiled. 1562 1563 iASL: Added Printf/Fprintf macros for formatted output. These macros are 1564 translated to existing AML Concatenate and Store operations. Printf 1565 writes to the ASL Debug object. Fprintf allows the specification of an 1566 ASL name as the target. Only a single format specifier is required, %o, 1567 since the AML interpreter dynamically converts objects to the required 1568 type. David E. Box. 1569 1570 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 1571 (Concatenate (Concatenate (Concatenate ("", Arg0), 1572 ": Unexpected value for "), Arg1), ", "), Arg2), 1573 " at line "), Arg3), Debug) 1574 1575 (new) Printf ("%o: Unexpected value for %o, %o at line %o", 1576 Arg0, Arg1, Arg2, Arg3) 1577 1578 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 1579 ("", Arg1), ": "), Arg0), " Successful"), STR1) 1580 1581 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0) 1582 1583 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the 1584 ASL parse tree before the AML code is generated. This allows blocks of 1585 ASL code to be removed in order to help locate and identify problem 1586 devices and/or code. David E. Box. 1587 1588 AcpiExec: Added support (-fi) for an optional namespace object 1589 initialization file. This file specifies initial values for namespace 1590 objects as necessary for debugging and testing different ASL code paths 1591 that may be taken as a result of BIOS options. 1592 1593 1594 2) Overview of symbolic operator support for ASL (ASL+) 1595 ------------------------------------------------------- 1596 1597 As an extension to the ASL language, iASL implements support for symbolic 1598 (C-style) operators for math and logical expressions. This can greatly 1599 simplify ASL code as well as improve both readability and 1600 maintainability. These language extensions can exist concurrently with 1601 all legacy ASL code and expressions. 1602 1603 The symbolic extensions are 100% compatible with existing AML 1604 interpreters, since no new AML opcodes are created. To implement the 1605 extensions, the iASL compiler transforms the symbolic expressions into 1606 the legacy ASL/AML equivalents at compile time. 1607 1608 Full symbolic expressions are supported, along with the standard C 1609 precedence and associativity rules. 1610 1611 Full disassembler support for the symbolic expressions is provided, and 1612 creates an automatic migration path for existing ASL code to ASL+ code 1613 via the disassembly process. By default, the disassembler now emits ASL+ 1614 code with symbolic expressions. An option (-dl) is provided to force the 1615 disassembler to emit legacy ASL code if desired. 1616 1617 Below is the complete list of the currently supported symbolic operators 1618 with examples. See the iASL User Guide for additional information. 1619 1620 1621 ASL+ Syntax Legacy ASL Equivalent 1622 ----------- --------------------- 1623 1624 // Math operators 1625 1626 Z = X + Y Add (X, Y, Z) 1627 Z = X - Y Subtract (X, Y, Z) 1628 Z = X * Y Multiply (X, Y, Z) 1629 Z = X / Y Divide (X, Y, , Z) 1630 Z = X % Y Mod (X, Y, Z) 1631 Z = X << Y ShiftLeft (X, Y, Z) 1632 Z = X >> Y ShiftRight (X, Y, Z) 1633 Z = X & Y And (X, Y, Z) 1634 Z = X | Y Or (X, Y, Z) 1635 Z = X ^ Y Xor (X, Y, Z) 1636 Z = ~X Not (X, Z) 1637 X++ Increment (X) 1638 X-- Decrement (X) 1639 1640 // Logical operators 1641 1642 (X == Y) LEqual (X, Y) 1643 (X != Y) LNotEqual (X, Y) 1644 (X < Y) LLess (X, Y) 1645 (X > Y) LGreater (X, Y) 1646 (X <= Y) LLessEqual (X, Y) 1647 (X >= Y) LGreaterEqual (X, Y) 1648 (X && Y) LAnd (X, Y) 1649 (X || Y) LOr (X, Y) 1650 (!X) LNot (X) 1651 1652 // Assignment and compound assignment operations 1653 1654 X = Y Store (Y, X) 1655 X += Y Add (X, Y, X) 1656 X -= Y Subtract (X, Y, X) 1657 X *= Y Multiply (X, Y, X) 1658 X /= Y Divide (X, Y, , X) 1659 X %= Y Mod (X, Y, X) 1660 X <<= Y ShiftLeft (X, Y, X) 1661 X >>= Y ShiftRight (X, Y, X) 1662 X &= Y And (X, Y, X) 1663 X |= Y Or (X, Y, X) 1664 X ^= Y Xor (X, Y, X) 1665 1666 1667 3) ASL+ Examples: 1668 ----------------- 1669 1670 Legacy ASL: 1671 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual ( 1672 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530, 1673 0x03FB), 1674 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0)))) 1675 { 1676 And (MEMB, 0xFFFFFFF0, SRMB) 1677 Store (MEMB, Local2) 1678 Store (PDBM, Local1) 1679 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM) 1680 Store (SRMB, MEMB) 1681 Or (PDBM, 0x02, PDBM) 1682 } 1683 1684 ASL+ version: 1685 If (((R510 & 0x03FB) == 0x02E0) || 1686 ((R520 & 0x03FB) == 0x02E0) || 1687 ((R530 & 0x03FB) == 0x02E0) || 1688 ((R540 & 0x03FB) == 0x02E0)) 1689 { 1690 SRMB = (MEMB & 0xFFFFFFF0) 1691 Local2 = MEMB 1692 Local1 = PDBM 1693 PDBM &= 0xFFFFFFFFFFFFFFF9 1694 MEMB = SRMB 1695 PDBM |= 0x02 1696 } 1697 1698 Legacy ASL: 1699 Store (0x1234, Local1) 1700 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3) 1701 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3) 1702 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3) 1703 Store (Index (PKG1, 0x03), Local6) 1704 Store (Add (Local3, Local2), Debug) 1705 Add (Local1, 0x0F, Local2) 1706 Add (Local1, Multiply (Local2, Local3), Local2) 1707 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3) 1708 1709 ASL+ version: 1710 Local1 = 0x1234 1711 Local3 = (((Local1 + TEST) + 0x20) * Local2) 1712 Local3 = (Local2 * ((Local1 + TEST) + 0x20)) 1713 Local3 = (Local1 + (TEST + (0x20 * Local2))) 1714 Local6 = Index (PKG1, 0x03) 1715 Debug = (Local3 + Local2) 1716 Local2 = (Local1 + 0x0F) 1717 Local2 = (Local1 + (Local2 * Local3)) 1718 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1)) 1719 1720 1721 ---------------------------------------- 1722 26 September 2014. Summary of changes for version 20140926: 1723 1724 1) ACPICA kernel-resident subsystem: 1725 1726 Updated the GPIO operation region handler interface (GeneralPurposeIo). 1727 In order to support GPIO Connection objects with multiple pins, along 1728 with the related Field objects, the following changes to the interface 1729 have been made: The Address is now defined to be the offset in bits of 1730 the field unit from the previous invocation of a Connection. It can be 1731 viewed as a "Pin Number Index" into the connection resource descriptor. 1732 The BitWidth is the exact bit width of the field. It is usually one bit, 1733 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for 1734 additional information and examples. 1735 1736 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with 1737 corresponding _Lxx/_Exx methods are disabled (they may have been enabled 1738 by the firmware), so that they cannot fire until they are enabled via 1739 AcpiUpdateAllGpes. Rafael J. Wysocki. 1740 1741 Added a new return flag for the Event/GPE status interfaces -- 1742 AcpiGetEventStatus and AcpiGetGpeStatus. The new 1743 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or 1744 GPE currently has a handler associated with it, and can thus actually 1745 affect the system. Lv Zheng. 1746 1747 Example Code and Data Size: These are the sizes for the OS-independent 1748 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1749 debug version of the code includes the debug output trace mechanism and 1750 has a much larger code and data size. 1751 1752 Current Release: 1753 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 1754 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 1755 Previous Release: 1756 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 1757 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 1758 1759 2) iASL Compiler/Disassembler and Tools: 1760 1761 iASL: Fixed a memory allocation/free regression introduced in 20140828 1762 that could cause the compiler to crash. This was introduced inadvertently 1763 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111, 1764 1113. 1765 1766 iASL: Removed two error messages that have been found to create false 1767 positives, until they can be fixed and fully validated (ACPICA BZ 1112): 1768 1) Illegal forward reference within a method 1769 2) Illegal reference across two methods 1770 1771 iASL: Implemented a new option (-lm) to create a hardware mapping file 1772 that summarizes all GPIO, I2C, SPI, and UART connections. This option 1773 works for both the compiler and disassembler. See the iASL compiler user 1774 guide for additional information and examples (section 6.4.6). 1775 1776 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to 1777 version 2. This corrects the AE_BAD_HEADER exception seen on systems with 1778 a version 1 RSDP. Lv Zheng ACPICA BZ 1097. 1779 1780 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode 1781 unless STDIN is actually a terminal. Assists with batch-mode processing. 1782 ACPICA BZ 1114. 1783 1784 Disassembler/AcpiHelp: Added another large group of recognized _HID 1785 values. 1786 1787 1788 ---------------------------------------- 1789 28 August 2014. Summary of changes for version 20140828: 1790 1791 1) ACPICA kernel-resident subsystem: 1792 1793 Fixed a problem related to the internal use of the Timer() operator where 1794 a 64-bit divide could cause an attempted link to a double-precision math 1795 library. This divide is not actually necessary, so the code was 1796 restructured to eliminate it. Lv Zheng. 1797 1798 ACPI 5.1: Added support for the runtime validation of the _DSD package 1799 (similar to the iASL support). 1800 1801 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the 1802 SRAT table. Hanjun Guo <hanjun.guo (a] linaro.org>. 1803 1804 Example Code and Data Size: These are the sizes for the OS-independent 1805 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1806 debug version of the code includes the debug output trace mechanism and 1807 has a much larger code and data size. 1808 1809 Current Release: 1810 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 1811 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 1812 Previous Release: 1813 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1 1814 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 1815 1816 2) iASL Compiler/Disassembler and Tools: 1817 1818 AcpiExec: Fixed a problem on unix systems where the original terminal 1819 state was not always properly restored upon exit. Seen when using the -v 1820 option. ACPICA BZ 1104. 1821 1822 iASL: Fixed a problem with the validation of the ranges/length within the 1823 Memory24 resource descriptor. There was a boundary condition when the 1824 range was equal to the (length -1) caused by the fact that these values 1825 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098 1826 1827 Disassembler: Fixed a problem with the GpioInt descriptor interrupt 1828 polarity 1829 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword 1830 is 1831 now supported properly. 1832 1833 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported 1834 in the disassembler, data table compiler, and table template generator. 1835 1836 iASL: Added a requirement for Device() objects that one of either a _HID 1837 or _ADR must exist within the scope of a Device, as per the ACPI 1838 specification. Remove a similar requirement that was incorrectly in place 1839 for the _DSD object. 1840 1841 iASL: Added error detection for illegal named references within control 1842 methods that would cause runtime failures. Now trapped as errors are: 1) 1843 References to objects within a non-parent control method. 2) Forward 1844 references (within a method) -- for control methods, AML interpreters use 1845 a one-pass parse of control methods. ACPICA BZ 1008. 1846 1847 iASL: Added error checking for dependencies related to the _PSx power 1848 methods. ACPICA BZ 1029. 1849 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2, 1850 _PS3. 1851 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same 1852 scope. 1853 1854 iASL and table compiler: Cleanup miscellaneous memory leaks by fully 1855 deploying the existing object and string caches and adding new caches for 1856 the table compiler. 1857 1858 iASL: Split the huge parser source file into multiple subfiles to improve 1859 manageability. Generation now requires the M4 macro preprocessor, which 1860 is part of the Bison distribution on both unix and windows platforms. 1861 1862 AcpiSrc: Fixed and removed all extraneous warnings generated during 1863 entire ACPICA source code scan and/or conversion. 1864 1865 1866 ---------------------------------------- 1867 1868 24 July 2014. Summary of changes for version 20140724: 1869 1870 The ACPI 5.1 specification has been released and is available at: 1871 http://uefi.org/specs/access 1872 1873 1874 0) ACPI 5.1 support in ACPICA: 1875 1876 ACPI 5.1 is fully supported in ACPICA as of this release. 1877 1878 New predefined names. Support includes iASL and runtime ACPICA 1879 validation. 1880 _CCA (Cache Coherency Attribute). 1881 _DSD (Device-Specific Data). David Box. 1882 1883 Modifications to existing ACPI tables. Support includes headers, iASL 1884 Data Table compiler, disassembler, and the template generator. 1885 FADT - New fields and flags. Graeme Gregory. 1886 GTDT - One new subtable and new fields. Tomasz Nowicki. 1887 MADT - Two new subtables. Tomasz Nowicki. 1888 PCCT - One new subtable. 1889 1890 Miscellaneous. 1891 New notification type for System Resource Affinity change events. 1892 1893 1894 1) ACPICA kernel-resident subsystem: 1895 1896 Fixed a regression introduced in 20140627 where a fault can happen during 1897 the deletion of Alias AML namespace objects. The problem affected both 1898 the core ACPICA and the ACPICA tools including iASL and AcpiExec. 1899 1900 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a 1901 simple mechanism to enable wake GPEs that have no associated handler or 1902 control method. Rafael Wysocki. 1903 1904 Updated the AcpiEnableGpe interface to disallow the enable if there is no 1905 handler or control method associated with the particular GPE. This will 1906 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki. 1907 1908 Updated GPE handling and dispatch by disabling the GPE before clearing 1909 the status bit for edge-triggered GPEs. Lv Zheng. 1910 1911 Added Timer() support to the AML Debug object. The current timer value is 1912 now displayed with each invocation of (Store to) the debug object to 1913 enable simple generation of execution times for AML code (method 1914 execution for example.) ACPICA BZ 1093. 1915 1916 Example Code and Data Size: These are the sizes for the OS-independent 1917 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1918 debug version of the code includes the debug output trace mechanism and 1919 has a much larger code and data size. 1920 1921 Current Release: 1922 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total 1923 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 1924 Previous Release: 1925 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 1926 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 1927 1928 1929 2) iASL Compiler/Disassembler and Tools: 1930 1931 Fixed an issue with the recently added local printf implementation, 1932 concerning width/precision specifiers that could cause incorrect output. 1933 Lv Zheng. ACPICA BZ 1094. 1934 1935 Disassembler: Added support to detect buffers that contain UUIDs and 1936 disassemble them to an invocation of the ToUUID operator. Also emit 1937 commented descriptions of known ACPI-related UUIDs. 1938 1939 AcpiHelp: Added support to display known ACPI-related UUIDs. New option, 1940 -u. Adds three new files. 1941 1942 iASL: Update table compiler and disassembler for DMAR table changes that 1943 were introduced in September 2013. With assistance by David Woodhouse. 1944 1945 ---------------------------------------- 1946 27 June 2014. Summary of changes for version 20140627: 1947 1948 1) ACPICA kernel-resident subsystem: 1949 1950 Formatted Output: Implemented local versions of standard formatted output 1951 utilities such as printf, etc. Over time, it has been discovered that 1952 there are in fact many portability issues with printf, and the addition 1953 of this feature will fix/prevent these issues once and for all. Some 1954 known issues are summarized below: 1955 1956 1) Output of 64-bit values is not portable. For example, UINT64 is %ull 1957 for the Linux kernel and is %uI64 for some MSVC versions. 1958 2) Invoking printf consistently in a manner that is portable across both 1959 32-bit and 64-bit platforms is difficult at best in many situations. 1960 3) The output format for pointers varies from system to system (leading 1961 zeros especially), and leads to inconsistent output from ACPICA across 1962 platforms. 1963 4) Certain platform-specific printf formats may conflict with ACPICA use. 1964 5) If there is no local C library available, ACPICA now has local support 1965 for printf. 1966 1967 -- To address these printf issues in a complete manner, ACPICA now 1968 directly implements a small subset of printf format specifiers, only 1969 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng. 1970 1971 Implemented support for ACPICA generation within the EFI environment. 1972 Initially, the AcpiDump utility is supported in the UEFI shell 1973 environment. Lv Zheng. 1974 1975 Added a new external interface, AcpiLogError, to improve ACPICA 1976 portability. This allows the host to redirect error messages from the 1977 ACPICA utilities. Lv Zheng. 1978 1979 Added and deployed new OSL file I/O interfaces to improve ACPICA 1980 portability: 1981 AcpiOsOpenFile 1982 AcpiOsCloseFile 1983 AcpiOsReadFile 1984 AcpiOsWriteFile 1985 AcpiOsGetFileOffset 1986 AcpiOsSetFileOffset 1987 There are C library implementations of these functions in the new file 1988 service_layers/oslibcfs.c -- however, the functions can be implemented by 1989 the local host in any way necessary. Lv Zheng. 1990 1991 Implemented a mechanism to disable/enable ACPI table checksum validation 1992 at runtime. This can be useful when loading tables very early during OS 1993 initialization when it may not be possible to map the entire table in 1994 order to compute the checksum. Lv Zheng. 1995 1996 Fixed a buffer allocation issue for the Generic Serial Bus support. 1997 Originally, a fixed buffer length was used. This change allows for 1998 variable-length buffers based upon the protocol indicated by the field 1999 access attributes. Reported by Lan Tianyu. Lv Zheng. 2000 2001 Fixed a problem where an object detached from a namespace node was not 2002 properly terminated/cleared and could cause a circular list problem if 2003 reattached. ACPICA BZ 1063. David Box. 2004 2005 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick. 2006 2007 Fixed a possible memory leak in an error return path within the function 2008 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King. 2009 2010 Example Code and Data Size: These are the sizes for the OS-independent 2011 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2012 debug version of the code includes the debug output trace mechanism and 2013 has a much larger code and data size. 2014 2015 Current Release: 2016 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 2017 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 2018 Previous Release: 2019 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 2020 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 2021 2022 2023 2) iASL Compiler/Disassembler and Tools: 2024 2025 Disassembler: Add dump of ASCII equivalent text within a comment at the 2026 end of each line of the output for the Buffer() ASL operator. 2027 2028 AcpiDump: Miscellaneous changes: 2029 Fixed repetitive table dump in -n mode. 2030 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if 2031 the ACPI 2.0 GUID fails. 2032 2033 iASL: Fixed a problem where the compiler could fault if incorrectly given 2034 an acpidump output file as input. ACPICA BZ 1088. David Box. 2035 2036 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if 2037 they are invoked without any arguments. 2038 2039 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ 2040 1086. Colin Ian King. 2041 2042 Disassembler: Cleaned up a block of code that extracts a parent Op 2043 object. Added a comment that explains that the parent is guaranteed to be 2044 valid in this case. ACPICA BZ 1069. 2045 2046 2047 ---------------------------------------- 2048 24 April 2014. Summary of changes for version 20140424: 2049 2050 1) ACPICA kernel-resident subsystem: 2051 2052 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT. 2053 Some of these tables are known to contain a trailing NULL entry. Lv 2054 Zheng. 2055 2056 Removed an extraneous error message for the case where there are a large 2057 number of system GPEs (> 124). This was the "32-bit FADT register is too 2058 long to convert to GAS struct" message, which is irrelevant for GPEs 2059 since the GPEx_BLK_LEN fields of the FADT are always used instead of the 2060 (limited capacity) GAS bit length. Also, several changes to ensure proper 2061 support for GPE numbers > 255, where some "GPE number" fields were 8-bits 2062 internally. 2063 2064 Implemented and deployed additional configuration support for the public 2065 ACPICA external interfaces. Entire classes of interfaces can now be 2066 easily modified or configured out, replaced by stubbed inline functions 2067 by default. Lv Zheng. 2068 2069 Moved all public ACPICA runtime configuration globals to the public 2070 ACPICA external interface file for convenience. Also, removed some 2071 obsolete/unused globals. See the file acpixf.h. Lv Zheng. 2072 2073 Documentation: Added a new section to the ACPICA reference describing the 2074 maximum number of GPEs that can be supported by the FADT-defined GPEs in 2075 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA 2076 reference. 2077 2078 Example Code and Data Size: These are the sizes for the OS-independent 2079 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2080 debug version of the code includes the debug output trace mechanism and 2081 has a much larger code and data size. 2082 2083 Current Release: 2084 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 2085 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 2086 Previous Release: 2087 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 2088 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 2089 2090 2091 2) iASL Compiler/Disassembler and Tools: 2092 2093 iASL and disassembler: Add full support for the LPIT table (Low Power 2094 Idle Table). Includes support in the disassembler, data table compiler, 2095 and template generator. 2096 2097 AcpiDump utility: 2098 1) Add option to force the use of the RSDT (over the XSDT). 2099 2) Improve validation of the RSDP signature (use 8 chars instead of 4). 2100 2101 iASL: Add check for predefined packages that are too large. For 2102 predefined names that contain subpackages, check if each subpackage is 2103 too large. (Check for too small already exists.) 2104 2105 Debugger: Updated the GPE command (which simulates a GPE by executing the 2106 GPE code paths in ACPICA). The GPE device is now optional, and defaults 2107 to the GPE 0/1 FADT-defined blocks. 2108 2109 Unix application OSL: Update line-editing support. Add additional error 2110 checking and take care not to reset terminal attributes on exit if they 2111 were never set. This should help guarantee that the terminal is always 2112 left in the previous state on program exit. 2113 2114 2115 ---------------------------------------- 2116 25 March 2014. Summary of changes for version 20140325: 2117 2118 1) ACPICA kernel-resident subsystem: 2119 2120 Updated the auto-serialize feature for control methods. This feature 2121 automatically serializes all methods that create named objects in order 2122 to prevent runtime errors. The update adds support to ignore the 2123 currently executing AML SyncLevel when invoking such a method, in order 2124 to prevent disruption of any existing SyncLevel priorities that may exist 2125 in the AML code. Although the use of SyncLevels is relatively rare, this 2126 change fixes a regression where an AE_AML_MUTEX_ORDER exception can 2127 appear on some machines starting with the 20140214 release. 2128 2129 Added a new external interface to allow the host to install ACPI tables 2130 very early, before the namespace is even created. AcpiInstallTable gives 2131 the host additional flexibility for ACPI table management. Tables can be 2132 installed directly by the host as if they had originally appeared in the 2133 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables 2134 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along 2135 with additional internal restructuring and cleanup. See the ACPICA 2136 Reference for interface details. Lv Zheng. 2137 2138 Added validation of the checksum for all incoming dynamically loaded 2139 tables (via external interfaces or via AML Load/LoadTable operators). Lv 2140 Zheng. 2141 2142 Updated the use of the AcpiOsWaitEventsComplete interface during Notify 2143 and GPE handler removal. Restructured calls to eliminate possible race 2144 conditions. Lv Zheng. 2145 2146 Added a warning for the use/execution of the ASL/AML Unload (table) 2147 operator. This will help detect and identify machines that use this 2148 operator if and when it is ever used. This operator has never been seen 2149 in the field and the usage model and possible side-effects of the drastic 2150 runtime action of a full table removal are unknown. 2151 2152 Reverted the use of #pragma push/pop which was introduced in the 20140214 2153 release. It appears that push and pop are not implemented by enough 2154 compilers to make the use of this feature feasible for ACPICA at this 2155 time. However, these operators may be deployed in a future ACPICA 2156 release. 2157 2158 Added the missing EXPORT_SYMBOL macros for the install and remove SCI 2159 handler interfaces. 2160 2161 Source code generation: 2162 1) Disabled the use of the "strchr" macro for the gcc-specific 2163 generation. For some versions of gcc, this macro can periodically expose 2164 a compiler bug which in turn causes compile-time error(s). 2165 2) Added support for PPC64 compilation. Colin Ian King. 2166 2167 Example Code and Data Size: These are the sizes for the OS-independent 2168 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2169 debug version of the code includes the debug output trace mechanism and 2170 has a much larger code and data size. 2171 2172 Current Release: 2173 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 2174 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 2175 Previous Release: 2176 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 2177 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 2178 2179 2180 2) iASL Compiler/Disassembler and Tools: 2181 2182 Disassembler: Added several new features to improve the readability of 2183 the resulting ASL code. Extra information is emitted within comment 2184 fields in the ASL code: 2185 1) Known _HID/_CID values are decoded to descriptive text. 2186 2) Standard values for the Notify() operator are decoded to descriptive 2187 text. 2188 3) Target operands are expanded to full pathnames (in a comment) when 2189 possible. 2190 2191 Disassembler: Miscellaneous updates for extern() handling: 2192 1) Abort compiler if file specified by -fe option does not exist. 2193 2) Silence unnecessary warnings about argument count mismatches. 2194 3) Update warning messages concerning unresolved method externals. 2195 4) Emit "UnknownObj" keyword for externals whose type cannot be 2196 determined. 2197 2198 AcpiHelp utility: 2199 1) Added the -a option to display both the ASL syntax and the AML 2200 encoding for an input ASL operator. This effectively displays all known 2201 information about an ASL operator with one AcpiHelp invocation. 2202 2) Added substring match support (similar to a wildcard) for the -i 2203 (_HID/PNP IDs) option. 2204 2205 iASL/Disassembler: Since this tool does not yet support execution on big- 2206 endian machines, added detection of endianness and an error message if 2207 execution is attempted on big-endian. Support for big-endian within iASL 2208 is a feature that is on the ACPICA to-be-done list. 2209 2210 AcpiBin utility: 2211 1) Remove option to extract binary files from an acpidump; this function 2212 is made obsolete by the AcpiXtract utility. 2213 2) General cleanup of open files and allocated buffers. 2214 2215 2216 ---------------------------------------- 2217 14 February 2014. Summary of changes for version 20140214: 2218 2219 1) ACPICA kernel-resident subsystem: 2220 2221 Implemented a new mechanism to proactively prevent problems with ill- 2222 behaved reentrant control methods that create named ACPI objects. This 2223 behavior is illegal as per the ACPI specification, but is nonetheless 2224 frequently seen in the field. Previously, this could lead to an 2225 AE_ALREADY_EXISTS exception if the method was actually entered by more 2226 than one thread. This new mechanism detects such methods at table load 2227 time and marks them "serialized" to prevent reentrancy. A new global 2228 option, AcpiGbl_AutoSerializeMethods, has been added to disable this 2229 feature if desired. This mechanism and global option obsoletes and 2230 supersedes the previous AcpiGbl_SerializeAllMethods option. 2231 2232 Added the "Windows 2013" string to the _OSI support. ACPICA will now 2233 respond TRUE to _OSI queries with this string. It is the stated policy of 2234 ACPICA to add new strings to the _OSI support as soon as possible after 2235 they are defined. See the full ACPICA _OSI policy which has been added to 2236 the utilities/utosi.c file. 2237 2238 Hardened/updated the _PRT return value auto-repair code: 2239 1) Do not abort the repair on a single subpackage failure, continue to 2240 check all subpackages. 2241 2) Add check for the minimum subpackage length (4). 2242 3) Properly handle extraneous NULL package elements. 2243 2244 Added support to avoid the possibility of infinite loops when traversing 2245 object linked lists. Never allow an infinite loop, even in the face of 2246 corrupted object lists. 2247 2248 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma 2249 pack(pop) directives to ensure that the ACPICA headers are independent of 2250 compiler settings or other host headers. 2251 2252 Example Code and Data Size: These are the sizes for the OS-independent 2253 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2254 debug version of the code includes the debug output trace mechanism and 2255 has a much larger code and data size. 2256 2257 Current Release: 2258 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 2259 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 2260 Previous Release: 2261 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 2262 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 2263 2264 2265 2) iASL Compiler/Disassembler and Tools: 2266 2267 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The 2268 first reserved field was incorrectly forced to have a value of zero. This 2269 change correctly forces the field to have a value of one. ACPICA BZ 1081. 2270 2271 Debugger: Added missing support for the "Extra" and "Data" subobjects 2272 when displaying object data. 2273 2274 Debugger: Added support to display entire object linked lists when 2275 displaying object data. 2276 2277 iASL: Removed the obsolete -g option to obtain ACPI tables from the 2278 Windows registry. This feature has been superseded by the acpidump 2279 utility. 2280 2281 2282 ---------------------------------------- 2283 14 January 2014. Summary of changes for version 20140114: 2284 2285 1) ACPICA kernel-resident subsystem: 2286 2287 Updated all ACPICA copyrights and signons to 2014. Added the 2014 2288 copyright to all module headers and signons, including the standard Linux 2289 header. This affects virtually every file in the ACPICA core subsystem, 2290 iASL compiler, all ACPICA utilities, and the test suites. 2291 2292 Improved parameter validation for AcpiInstallGpeBlock. Added the 2293 following checks: 2294 1) The incoming device handle refers to type ACPI_TYPE_DEVICE. 2295 2) There is not already a GPE block attached to the device. 2296 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a 2297 device. 2298 2299 Correctly support "references" in the ACPI_OBJECT. This change fixes the 2300 support to allow references (namespace nodes) to be passed as arguments 2301 to control methods via the evaluate object interface. This is probably 2302 most useful for testing purposes, however. 2303 2304 Improved support for 32/64 bit physical addresses in printf()-like 2305 output. This change improves the support for physical addresses in printf 2306 debug statements and other output on both 32-bit and 64-bit hosts. It 2307 consistently outputs the appropriate number of bytes for each host. The 2308 %p specifier is unsatisfactory since it does not emit uniform output on 2309 all hosts/clib implementations (on some, leading zeros are not supported, 2310 leading to difficult-to-read output). 2311 2312 Example Code and Data Size: These are the sizes for the OS-independent 2313 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2314 debug version of the code includes the debug output trace mechanism and 2315 has a much larger code and data size. 2316 2317 Current Release: 2318 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 2319 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 2320 Previous Release: 2321 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 2322 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 2323 2324 2325 2) iASL Compiler/Disassembler and Tools: 2326 2327 iASL: Fix a possible fault when using the Connection() operator. Fixes a 2328 problem if the parent Field definition for the Connection operator refers 2329 to an operation region that does not exist. ACPICA BZ 1064. 2330 2331 AcpiExec: Load of local test tables is now optional. The utility has the 2332 capability to load some various tables to test features of ACPICA. 2333 However, there are enough of them that the output of the utility became 2334 confusing. With this change, only the required local tables are displayed 2335 (RSDP, XSDT, etc.) along with the actual tables loaded via the command 2336 line specification. This makes the default output simler and easier to 2337 understand. The -el command line option restores the original behavior 2338 for testing purposes. 2339 2340 AcpiExec: Added support for overlapping operation regions. This change 2341 expands the simulation of operation regions by supporting regions that 2342 overlap within the given address space. Supports SystemMemory and 2343 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031. 2344 2345 AcpiExec: Added region handler support for PCI_Config and EC spaces. This 2346 allows AcpiExec to simulate these address spaces, similar to the current 2347 support for SystemMemory and SystemIO. 2348 2349 Debugger: Added new command to read/write/compare all namespace objects. 2350 The command "test objects" will exercise the entire namespace by writing 2351 new values to each data object, and ensuring that the write was 2352 successful. The original value is then restored and verified. 2353 2354 Debugger: Added the "test predefined" command. This change makes this 2355 test public and puts it under the new "test" command. The test executes 2356 each and every predefined name within the current namespace. 2357 2358 2359 ---------------------------------------- 2360 18 December 2013. Summary of changes for version 20131218: 2361 2362 Global note: The ACPI 5.0A specification was released this month. There 2363 are no changes needed for ACPICA since this release of ACPI is an 2364 errata/clarification release. The specification is available at 2365 acpi.info. 2366 2367 2368 1) ACPICA kernel-resident subsystem: 2369 2370 Added validation of the XSDT root table if it is present. Some older 2371 platforms contain an XSDT that is ill-formed or otherwise invalid (such 2372 as containing some or all entries that are NULL pointers). This change 2373 adds a new function to validate the XSDT before actually using it. If the 2374 XSDT is found to be invalid, ACPICA will now automatically fall back to 2375 using the RSDT instead. Original implementation by Zhao Yakui. Ported to 2376 ACPICA and enhanced by Lv Zheng and Bob Moore. 2377 2378 Added a runtime option to ignore the XSDT and force the use of the RSDT. 2379 This change adds a runtime option that will force ACPICA to use the RSDT 2380 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec 2381 requires that an XSDT be used instead of the RSDT, the XSDT has been 2382 found to be corrupt or ill-formed on some machines. Lv Zheng. 2383 2384 Added a runtime option to favor 32-bit FADT register addresses over the 2385 64-bit addresses. This change adds an option to favor 32-bit FADT 2386 addresses when there is a conflict between the 32-bit and 64-bit versions 2387 of the same register. The default behavior is to use the 64-bit version 2388 in accordance with the ACPI specification. This can now be overridden via 2389 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng. 2390 2391 During the change above, the internal "Convert FADT" and "Verify FADT" 2392 functions have been merged to simplify the code, making it easier to 2393 understand and maintain. ACPICA BZ 933. 2394 2395 Improve exception reporting and handling for GPE block installation. 2396 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the 2397 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019. 2398 2399 Added helper macros to extract bus/segment numbers from the HEST table. 2400 This change adds two macros to extract the encoded bus and segment 2401 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT. 2402 Betty Dall <betty.dall (a] hp.com> 2403 2404 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used 2405 by ACPICA. It is not a public macro, so it should have no effect on 2406 existing OSV code. Lv Zheng. 2407 2408 Example Code and Data Size: These are the sizes for the OS-independent 2409 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2410 debug version of the code includes the debug output trace mechanism and 2411 has a much larger code and data size. 2412 2413 Current Release: 2414 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 2415 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 2416 Previous Release: 2417 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 2418 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 2419 2420 2421 2) iASL Compiler/Disassembler and Tools: 2422 2423 Disassembler: Improved pathname support for emitted External() 2424 statements. This change adds full pathname support for external names 2425 that have been resolved internally by the inclusion of additional ACPI 2426 tables (via the iASL -e option). Without this change, the disassembler 2427 can emit multiple externals for the same object, or it become confused 2428 when the Scope() operator is used on an external object. Overall, greatly 2429 improves the ability to actually recompile the emitted ASL code when 2430 objects a referenced across multiple ACPI tables. Reported by Michael 2431 Tsirkin (mst (a] redhat.com). 2432 2433 Tests/ASLTS: Updated functional control suite to execute with no errors. 2434 David Box. Fixed several errors related to the testing of the interpreter 2435 slack mode. Lv Zheng. 2436 2437 iASL: Added support to detect names that are declared within a control 2438 method, but are unused (these are temporary names that are only valid 2439 during the time the method is executing). A remark is issued for these 2440 cases. ACPICA BZ 1022. 2441 2442 iASL: Added full support for the DBG2 table. Adds full disassembler, 2443 table compiler, and template generator support for the DBG2 table (Debug 2444 Port 2 table). 2445 2446 iASL: Added full support for the PCCT table, update the table definition. 2447 Updates the PCCT table definition in the actbl3.h header and adds table 2448 compiler and template generator support. 2449 2450 iASL: Added an option to emit only error messages (no warnings/remarks). 2451 The -ve option will enable only error messages, warnings and remarks are 2452 suppressed. This can simplify debugging when only the errors are 2453 important, such as when an ACPI table is disassembled and there are many 2454 warnings and remarks -- but only the actual errors are of real interest. 2455 2456 Example ACPICA code (source/tools/examples): Updated the example code so 2457 that it builds to an actual working program, not just example code. Added 2458 ACPI tables and execution of an example control method in the DSDT. Added 2459 makefile support for Unix generation. 2460 2461 2462 ---------------------------------------- 2463 15 November 2013. Summary of changes for version 20131115: 2464 2465 This release is available at https://acpica.org/downloads 2466 2467 2468 1) ACPICA kernel-resident subsystem: 2469 2470 Resource Manager: Fixed loop termination for the "get AML length" 2471 function. The loop previously had an error termination on a NULL resource 2472 pointer, which can never happen since the loop simply increments a valid 2473 resource pointer. This fix changes the loop to terminate with an error on 2474 an invalid end-of-buffer condition. The problem can be seen as an 2475 infinite loop by callers to AcpiSetCurrentResources with an invalid or 2476 corrupted resource descriptor, or a resource descriptor that is missing 2477 an END_TAG descriptor. Reported by Dan Carpenter 2478 <dan.carpenter (a] oracle.com>. Lv Zheng, Bob Moore. 2479 2480 Table unload and ACPICA termination: Delete all attached data objects 2481 during namespace node deletion. This fix updates namespace node deletion 2482 to delete the entire list of attached objects (attached via 2483 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ 2484 1024. Tomasz Nowicki (tomasz.nowicki (a] linaro.org). 2485 2486 ACPICA termination: Added support to delete all objects attached to the 2487 root namespace node. This fix deletes any and all objects that have been 2488 attached to the root node via AcpiAttachData. Previously, none of these 2489 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026. 2490 2491 Debug output: Do not emit the function nesting level for the in-kernel 2492 build. The nesting level is really only useful during a single-thread 2493 execution. Therefore, only enable this output for the AcpiExec utility. 2494 Also, only emit the thread ID when executing under AcpiExec (Context 2495 switches are still always detected and a message is emitted). ACPICA BZ 2496 972. 2497 2498 Example Code and Data Size: These are the sizes for the OS-independent 2499 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2500 debug version of the code includes the debug output trace mechanism and 2501 has a much larger code and data size. 2502 2503 Current Release: 2504 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 2505 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 2506 Previous Release: 2507 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 2508 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 2509 2510 2511 2) iASL Compiler/Disassembler and Tools: 2512 2513 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the 2514 correct portable POSIX header for terminal control functions. 2515 2516 Disassembler: Fixed control method invocation issues related to the use 2517 of the CondRefOf() operator. The problem is seen in the disassembly where 2518 control method invocations may not be disassembled properly if the 2519 control method name has been used previously as an argument to CondRefOf. 2520 The solution is to not attempt to emit an external declaration for the 2521 CondRefOf target (it is not necessary in the first place). This prevents 2522 disassembler object type confusion. ACPICA BZ 988. 2523 2524 Unix Makefiles: Added an option to disable compiler optimizations and the 2525 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA 2526 with optimizations (reportedly, gcc 4.4 for example). This change adds a 2527 command line option for make (NOOPT) that disables all compiler 2528 optimizations and the _FORTIFY_SOURCE compiler flag. The default 2529 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ 2530 1034. Lv Zheng, Bob Moore. 2531 2532 Tests/ASLTS: Added options to specify individual test cases and modes. 2533 This allows testers running aslts.sh to optionally specify individual 2534 test modes and test cases. Also added an option to disable the forced 2535 generation of the ACPICA tools from source if desired. Lv Zheng. 2536 2537 ---------------------------------------- 2538 27 September 2013. Summary of changes for version 20130927: 2539 2540 This release is available at https://acpica.org/downloads 2541 2542 2543 1) ACPICA kernel-resident subsystem: 2544 2545 Fixed a problem with store operations to reference objects. This change 2546 fixes a problem where a Store operation to an ArgX object that contained 2547 a 2548 reference to a field object did not complete the automatic dereference 2549 and 2550 then write to the actual field object. Instead, the object type of the 2551 field object was inadvertently changed to match the type of the source 2552 operand. The new behavior will actually write to the field object (buffer 2553 field or field unit), thus matching the correct ACPI-defined behavior. 2554 2555 Implemented support to allow the host to redefine individual OSL 2556 prototypes. This change enables the host to redefine OSL prototypes found 2557 in the acpiosxf.h file. This allows the host to implement OSL interfaces 2558 with a macro or inlined function. Further, it allows the host to add any 2559 additional required modifiers such as __iomem, __init, __exit, etc., as 2560 necessary on a per-interface basis. Enables maximum flexibility for the 2561 OSL interfaces. Lv Zheng. 2562 2563 Hardcoded the access width for the FADT-defined reset register. The ACPI 2564 specification requires the reset register width to be 8 bits. ACPICA now 2565 hardcodes the width to 8 and ignores the FADT width value. This provides 2566 compatibility with other ACPI implementations that have allowed BIOS code 2567 with bad register width values to go unnoticed. Matthew Garett, Bob 2568 Moore, 2569 Lv Zheng. 2570 2571 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is 2572 used 2573 in the OSL header (acpiosxf). The change modifies the position of this 2574 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid 2575 build issues if the OSL defines the implementation of the interface to be 2576 an inline stub function. Lv Zheng. 2577 2578 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA 2579 initialization interfaces. This change adds a new macro for the main init 2580 and terminate external interfaces in order to support hosts that require 2581 additional or different processing for these functions. Changed from 2582 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv 2583 Zheng, Bob Moore. 2584 2585 Cleaned up the memory allocation macros for configurability. In the 2586 common 2587 case, the ACPI_ALLOCATE and related macros now resolve directly to their 2588 respective AcpiOs* OSL interfaces. Two options: 2589 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by 2590 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define. 2591 2) For AcpiExec (and for debugging), the macros can optionally be 2592 resolved 2593 to the local ACPICA interfaces that track each allocation (local tracking 2594 is used to immediately detect memory leaks). 2595 Lv Zheng. 2596 2597 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel 2598 to predefine this macro to either TRUE or FALSE during the system build. 2599 2600 Replaced __FUNCTION_ with __func__ in the gcc-specific header. 2601 2602 Example Code and Data Size: These are the sizes for the OS-independent 2603 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2604 debug version of the code includes the debug output trace mechanism and 2605 has a much larger code and data size. 2606 2607 Current Release: 2608 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 2609 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 2610 Previous Release: 2611 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 2612 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 2613 2614 2615 2) iASL Compiler/Disassembler and Tools: 2616 2617 iASL: Implemented wildcard support for the -e option. This simplifies use 2618 when there are many SSDTs that must be included to resolve external 2619 method 2620 declarations. ACPICA BZ 1041. Example: 2621 iasl -e ssdt*.dat -d dsdt.dat 2622 2623 AcpiExec: Add history/line-editing for Unix/Linux systems. This change 2624 adds a portable module that implements full history and limited line 2625 editing for Unix and Linux systems. It does not use readline() due to 2626 portability issues. Instead it uses the POSIX termio interface to put the 2627 terminal in raw input mode so that the various special keys can be 2628 trapped 2629 (such as up/down-arrow for history support and left/right-arrow for line 2630 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036. 2631 2632 AcpiXtract: Add support to handle (ignore) "empty" lines containing only 2633 one or more spaces. This provides compatible with early or different 2634 versions of the AcpiDump utility. ACPICA BZ 1044. 2635 2636 AcpiDump: Do not ignore tables that contain only an ACPI table header. 2637 Apparently, some BIOSs create SSDTs that contain an ACPI table header but 2638 no other data. This change adds support to dump these tables. Any tables 2639 shorter than the length of an ACPI table header remain in error (an error 2640 message is emitted). Reported by Yi Li. 2641 2642 Debugger: Echo actual command along with the "unknown command" message. 2643 2644 ---------------------------------------- 2645 23 August 2013. Summary of changes for version 20130823: 2646 2647 1) ACPICA kernel-resident subsystem: 2648 2649 Implemented support for host-installed System Control Interrupt (SCI) 2650 handlers. Certain ACPI functionality requires the host to handle raw 2651 SCIs. For example, the "SCI Doorbell" that is defined for memory power 2652 state support requires the host device driver to handle SCIs to examine 2653 if the doorbell has been activated. Multiple SCI handlers can be 2654 installed to allow for future expansion. New external interfaces are 2655 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for 2656 details. Lv Zheng, Bob Moore. ACPICA BZ 1032. 2657 2658 Operation region support: Never locally free the handler "context" 2659 pointer. This change removes some dangerous code that attempts to free 2660 the handler context pointer in some (rare) circumstances. The owner of 2661 the handler owns this pointer and the ACPICA code should never touch it. 2662 Although not seen to be an issue in any kernel, it did show up as a 2663 problem (fault) under AcpiExec. Also, set the internal storage field for 2664 the context pointer to zero when the region is deactivated, simply for 2665 sanity. David Box. ACPICA BZ 1039. 2666 2667 AcpiRead: On error, do not modify the return value target location. If an 2668 error happens in the middle of a split 32/32 64-bit I/O operation, do not 2669 modify the target of the return value pointer. Makes the code consistent 2670 with the rest of ACPICA. Bjorn Helgaas. 2671 2672 Example Code and Data Size: These are the sizes for the OS-independent 2673 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2674 debug version of the code includes the debug output trace mechanism and 2675 has a much larger code and data size. 2676 2677 Current Release: 2678 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 2679 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 2680 Previous Release: 2681 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 2682 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total 2683 2684 2685 2) iASL Compiler/Disassembler and Tools: 2686 2687 AcpiDump: Implemented several new features and fixed some problems: 2688 1) Added support to dump the RSDP, RSDT, and XSDT tables. 2689 2) Added support for multiple table instances (SSDT, UEFI). 2690 3) Added option to dump "customized" (overridden) tables (-c). 2691 4) Fixed a problem where some table filenames were improperly 2692 constructed. 2693 5) Improved some error messages, removed some unnecessary messages. 2694 2695 iASL: Implemented additional support for disassembly of ACPI tables that 2696 contain invocations of external control methods. The -fe<file> option 2697 allows the import of a file that specifies the external methods along 2698 with the required number of arguments for each -- allowing for the 2699 correct disassembly of the table. This is a workaround for a limitation 2700 of AML code where the disassembler often cannot determine the number of 2701 arguments required for an external control method and generates incorrect 2702 ASL code. See the iASL reference for details. ACPICA BZ 1030. 2703 2704 Debugger: Implemented a new command (paths) that displays the full 2705 pathnames (namepaths) and object types of all objects in the namespace. 2706 This is an alternative to the namespace command. 2707 2708 Debugger: Implemented a new command (sci) that invokes the SCI dispatch 2709 mechanism and any installed handlers. 2710 2711 iASL: Fixed a possible segfault for "too many parent prefixes" condition. 2712 This can occur if there are too many parent prefixes in a namepath (for 2713 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035. 2714 2715 Application OSLs: Set the return value for the PCI read functions. These 2716 functions simply return AE_OK, but should set the return value to zero 2717 also. This change implements this. ACPICA BZ 1038. 2718 2719 Debugger: Prevent possible command line buffer overflow. Increase the 2720 size of a couple of the debugger line buffers, and ensure that overflow 2721 cannot happen. ACPICA BZ 1037. 2722 2723 iASL: Changed to abort immediately on serious errors during the parsing 2724 phase. Due to the nature of ASL, there is no point in attempting to 2725 compile these types of errors, and they typically end up causing a 2726 cascade of hundreds of errors which obscure the original problem. 2727 2728 ---------------------------------------- 2729 25 July 2013. Summary of changes for version 20130725: 2730 2731 1) ACPICA kernel-resident subsystem: 2732 2733 Fixed a problem with the DerefOf operator where references to FieldUnits 2734 and BufferFields incorrectly returned the parent object, not the actual 2735 value of the object. After this change, a dereference of a FieldUnit 2736 reference results in a read operation on the field to get the value, and 2737 likewise, the appropriate BufferField value is extracted from the target 2738 buffer. 2739 2740 Fixed a problem where the _WAK method could cause a fault under these 2741 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK 2742 method returned no value. The problem is rarely seen because most kernels 2743 run ACPICA in slack mode. 2744 2745 For the DerefOf operator, a fatal error now results if an attempt is made 2746 to dereference a reference (created by the Index operator) to a NULL 2747 package element. Provides compatibility with other ACPI implementations, 2748 and this behavior will be added to a future version of the ACPI 2749 specification. 2750 2751 The ACPI Power Management Timer (defined in the FADT) is now optional. 2752 This provides compatibility with other ACPI implementations and will 2753 appear in the next version of the ACPI specification. If there is no PM 2754 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of 2755 zero in the FADT indicates no PM timer. 2756 2757 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This 2758 allows the host to globally enable/disable all vendor strings, all 2759 feature strings, or both. Intended to be primarily used for debugging 2760 purposes only. Lv Zheng. 2761 2762 Expose the collected _OSI data to the host via a global variable. This 2763 data tracks the highest level vendor ID that has been invoked by the BIOS 2764 so that the host (and potentially ACPICA itself) can change behaviors 2765 based upon the age of the BIOS. 2766 2767 Example Code and Data Size: These are the sizes for the OS-independent 2768 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2769 debug version of the code includes the debug output trace mechanism and 2770 has a much larger code and data size. 2771 2772 Current Release: 2773 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 2774 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 2775 Previous Release: 2776 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 2777 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 2778 2779 2780 2) iASL Compiler/Disassembler and Tools: 2781 2782 iASL: Created the following enhancements for the -so option (create 2783 offset table): 2784 1)Add offsets for the last nameseg in each namepath for every supported 2785 object type 2786 2)Add support for Processor, Device, Thermal Zone, and Scope objects 2787 3)Add the actual AML opcode for the parent object of every supported 2788 object type 2789 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects 2790 2791 Disassembler: Emit all unresolved external symbols in a single block. 2792 These are external references to control methods that could not be 2793 resolved, and thus, the disassembler had to make a guess at the number of 2794 arguments to parse. 2795 2796 iASL: The argument to the -T option (create table template) is now 2797 optional. If not specified, the default table is a DSDT, typically the 2798 most common case. 2799 2800 ---------------------------------------- 2801 26 June 2013. Summary of changes for version 20130626: 2802 2803 1) ACPICA kernel-resident subsystem: 2804 2805 Fixed an issue with runtime repair of the _CST object. Null or invalid 2806 elements were not always removed properly. Lv Zheng. 2807 2808 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the 2809 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device, 2810 the maximum number of GPEs is 1016. Use of multiple GPE block devices 2811 makes the system-wide number of GPEs essentially unlimited. 2812 2813 Example Code and Data Size: These are the sizes for the OS-independent 2814 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2815 debug version of the code includes the debug output trace mechanism and 2816 has a much larger code and data size. 2817 2818 Current Release: 2819 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 2820 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 2821 Previous Release: 2822 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 2823 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 2824 2825 2826 2) iASL Compiler/Disassembler and Tools: 2827 2828 Portable AcpiDump: Implemented full support for the Linux and FreeBSD 2829 hosts. Now supports Linux, FreeBSD, and Windows. 2830 2831 Disassembler: Added some missing types for the HEST and EINJ tables: "Set 2832 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline". 2833 2834 iASL/Preprocessor: Implemented full support for nested 2835 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks. 2836 2837 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes 2838 max. The original purpose of this constraint was to limit the amount of 2839 debug output. However, the string function in question (UtPrintString) is 2840 now used for the disassembler also, where 256 bytes is insufficient. 2841 Reported by RehabMan@GitHub. 2842 2843 iASL/DataTables: Fixed some problems and issues with compilation of DMAR 2844 tables. ACPICA BZ 999. Lv Zheng. 2845 2846 iASL: Fixed a couple of error exit issues that could result in a "Could 2847 not delete <file>" message during ASL compilation. 2848 2849 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though 2850 the actual signatures for these tables are "FACP" and "APIC", 2851 respectively. 2852 2853 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI 2854 tables are allowed to have multiple instances. 2855 2856 ---------------------------------------- 2857 17 May 2013. Summary of changes for version 20130517: 2858 2859 1) ACPICA kernel-resident subsystem: 2860 2861 Fixed a regression introduced in version 20130328 for _INI methods. This 2862 change fixes a problem introduced in 20130328 where _INI methods are no 2863 longer executed properly because of a memory block that was not 2864 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki 2865 <tomasz.nowicki (a] linaro.org>. 2866 2867 Fixed a possible problem with the new extended sleep registers in the 2868 ACPI 2869 5.0 FADT. Do not use these registers (even if populated) unless the HW- 2870 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ 2871 1020. Lv Zheng. 2872 2873 Implemented return value repair code for _CST predefined objects: Sort 2874 the 2875 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng. 2876 2877 Implemented a debug-only option to disable loading of SSDTs from the 2878 RSDT/XSDT during ACPICA initialization. This can be useful for debugging 2879 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in 2880 acglobal.h - ACPICA BZ 1005. Lv Zheng. 2881 2882 Fixed some issues in the ACPICA initialization and termination code: 2883 Tomasz Nowicki <tomasz.nowicki (a] linaro.org> 2884 1) Clear events initialized flag upon event component termination. ACPICA 2885 BZ 1013. 2886 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018. 2887 3) Delete global lock pending lock during termination. ACPICA BZ 1012. 2888 4) Clear debug buffer global on termination to prevent possible multiple 2889 delete. ACPICA BZ 1010. 2890 2891 Standardized all switch() blocks across the entire source base. After 2892 many 2893 years, different formatting for switch() had crept in. This change makes 2894 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan. 2895 2896 Split some files to enhance ACPICA modularity and configurability: 2897 1) Split buffer dump routines into utilities/utbuffer.c 2898 2) Split internal error message routines into utilities/uterror.c 2899 3) Split table print utilities into tables/tbprint.c 2900 4) Split iASL command-line option processing into asloptions.c 2901 2902 Makefile enhancements: 2903 1) Support for all new files above. 2904 2) Abort make on errors from any subcomponent. Chao Guan. 2905 3) Add build support for Apple Mac OS X. Liang Qi. 2906 2907 Example Code and Data Size: These are the sizes for the OS-independent 2908 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2909 debug version of the code includes the debug output trace mechanism and 2910 has a much larger code and data size. 2911 2912 Current Release: 2913 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 2914 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 2915 Previous Release: 2916 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 2917 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 2918 2919 2920 2) iASL Compiler/Disassembler and Tools: 2921 2922 New utility: Implemented an easily portable version of the acpidump 2923 utility to extract ACPI tables from the system (or a file) in an ASCII 2924 hex 2925 dump format. The top-level code implements the various command line 2926 options, file I/O, and table dump routines. To port to a new host, only 2927 three functions need to be implemented to get tables -- since this 2928 functionality is OS-dependent. See the tools/acpidump/apmain.c module and 2929 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes: 2930 1) The Windows version obtains the ACPI tables from the Registry. 2931 2) The Linux version is under development. 2932 3) Other hosts - If an OS-dependent module is submitted, it will be 2933 distributed with ACPICA. 2934 2935 iASL: Fixed a regression for -D preprocessor option (define symbol). A 2936 restructuring/change to the initialization sequence caused this option to 2937 no longer work properly. 2938 2939 iASL: Implemented a mechanism to disable specific warnings and remarks. 2940 Adds a new command line option, "-vw <messageid> as well as "#pragma 2941 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore. 2942 2943 iASL: Fix for too-strict package object validation. The package object 2944 validation for return values from the predefined names is a bit too 2945 strict, it does not allow names references within the package (which will 2946 be resolved at runtime.) These types of references cannot be validated at 2947 compile time. This change ignores named references within package objects 2948 for names that return or define static packages. 2949 2950 Debugger: Fixed the 80-character command line limitation for the History 2951 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan. 2952 2953 iASL: Added control method and package support for the -so option 2954 (generates AML offset table for BIOS support.) 2955 2956 iASL: issue a remark if a non-serialized method creates named objects. If 2957 a thread blocks within the method for any reason, and another thread 2958 enters the method, the method will fail because an attempt will be made 2959 to 2960 create the same (named) object twice. In this case, issue a remark that 2961 the method should be marked serialized. NOTE: may become a warning later. 2962 ACPICA BZ 909. 2963 2964 ---------------------------------------- 2965 18 April 2013. Summary of changes for version 20130418: 2966 2967 1) ACPICA kernel-resident subsystem: 2968 2969 Fixed a possible buffer overrun during some rare but specific field unit 2970 read operations. This overrun can only happen if the DSDT version is 1 -- 2971 meaning that all AML integers are 32 bits -- and the field length is 2972 between 33 and 55 bits long. During the read, an internal buffer object 2973 is 2974 created for the field unit because the field is larger than an integer 2975 (32 2976 bits). However, in this case, the buffer will be incorrectly written 2977 beyond the end because the buffer length is less than the internal 2978 minimum 2979 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes 2980 long, but a full 8 bytes will be written. 2981 2982 Updated the Embedded Controller "orphan" _REG method support. This refers 2983 to _REG methods under the EC device that have no corresponding operation 2984 region. This is allowed by the ACPI specification. This update removes a 2985 dependency on the existence an ECDT table. It will execute an orphan _REG 2986 method as long as the operation region handler for the EC is installed at 2987 the EC device node and not the namespace root. Rui Zhang (original 2988 update), Bob Moore (update/integrate). 2989 2990 Implemented run-time argument typechecking for all predefined ACPI names 2991 (_STA, _BIF, etc.) This change performs object typechecking on all 2992 incoming arguments for all predefined names executed via 2993 AcpiEvaluateObject. This ensures that ACPI-related device drivers are 2994 passing correct object types as well as the correct number of arguments 2995 (therefore identifying any issues immediately). Also, the ASL/namespace 2996 definition of the predefined name is checked against the ACPI 2997 specification for the proper argument count. Adds one new file, 2998 nsarguments.c 2999 3000 Changed an exception code for the ASL UnLoad() operator. Changed the 3001 exception code for the case where the input DdbHandle is invalid, from 3002 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE. 3003 3004 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the 3005 global makefile. The use of this flag causes compiler errors on earlier 3006 versions of GCC, so it has been removed for compatibility. 3007 3008 Miscellaneous cleanup: 3009 1) Removed some unused/obsolete macros 3010 2) Fixed a possible memory leak in the _OSI support 3011 3) Removed an unused variable in the predefined name support 3012 4) Windows OSL: remove obsolete reference to a memory list field 3013 3014 Example Code and Data Size: These are the sizes for the OS-independent 3015 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3016 debug version of the code includes the debug output trace mechanism and 3017 has a much larger code and data size. 3018 3019 Current Release: 3020 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 3021 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 3022 Previous Release: 3023 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 3024 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 3025 3026 3027 2) iASL Compiler/Disassembler and Tools: 3028 3029 AcpiExec: Added installation of a handler for the SystemCMOS address 3030 space. This prevents control method abort if a method accesses this 3031 space. 3032 3033 AcpiExec: Added support for multiple EC devices, and now install EC 3034 operation region handler(s) at the actual EC device instead of the 3035 namespace root. This reflects the typical behavior of host operating 3036 systems. 3037 3038 AcpiExec: Updated to ensure that all operation region handlers are 3039 installed before the _REG methods are executed. This prevents a _REG 3040 method from aborting if it accesses an address space has no handler. 3041 AcpiExec installs a handler for every possible address space. 3042 3043 Debugger: Enhanced the "handlers" command to display non-root handlers. 3044 This change enhances the handlers command to display handlers associated 3045 with individual devices throughout the namespace, in addition to the 3046 currently supported display of handlers associated with the root 3047 namespace 3048 node. 3049 3050 ASL Test Suite: Several test suite errors have been identified and 3051 resolved, reducing the total error count during execution. Chao Guan. 3052 3053 ---------------------------------------- 3054 28 March 2013. Summary of changes for version 20130328: 3055 3056 1) ACPICA kernel-resident subsystem: 3057 3058 Fixed several possible race conditions with the internal object reference 3059 counting mechanism. Some of the external ACPICA interfaces update object 3060 reference counts without holding the interpreter or namespace lock. This 3061 change adds a spinlock to protect reference count updates on the internal 3062 ACPICA objects. Reported by and with assistance from Andriy Gapon 3063 (avg (a] FreeBSD.org). 3064 3065 FADT support: Removed an extraneous warning for very large GPE register 3066 sets. This change removes a size mismatch warning if the legacy length 3067 field for a GPE register set is larger than the 64-bit GAS structure can 3068 accommodate. GPE register sets can be larger than the 255-bit width 3069 limitation of the GAS structure. Linn Crosetto (linn (a] hp.com). 3070 3071 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error 3072 return from this interface. Handles a possible timeout case if 3073 ACPI_WAIT_FOREVER is modified by the host to be a value less than 3074 "forever". Jung-uk Kim. 3075 3076 Predefined name support: Add allowed/required argument type information 3077 to 3078 the master predefined info table. This change adds the infrastructure to 3079 enable typechecking on incoming arguments for all predefined 3080 methods/objects. It does not actually contain the code that will fully 3081 utilize this information, this is still under development. Also condenses 3082 some duplicate code for the predefined names into a new module, 3083 utilities/utpredef.c 3084 3085 Example Code and Data Size: These are the sizes for the OS-independent 3086 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3087 debug version of the code includes the debug output trace mechanism and 3088 has a much larger code and data size. 3089 3090 Previous Release: 3091 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 3092 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 3093 Current Release: 3094 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 3095 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 3096 3097 3098 2) iASL Compiler/Disassembler and Tools: 3099 3100 iASL: Implemented a new option to simplify the development of ACPI- 3101 related 3102 BIOS code. Adds support for a new "offset table" output file. The -so 3103 option will create a C table containing the AML table offsets of various 3104 named objects in the namespace so that BIOS code can modify them easily 3105 at 3106 boot time. This can simplify BIOS runtime code by eliminating expensive 3107 searches for "magic values", enhancing boot times and adding greater 3108 reliability. With assistance from Lee Hamel. 3109 3110 iASL: Allow additional predefined names to return zero-length packages. 3111 Now, all predefined names that are defined by the ACPI specification to 3112 return a "variable-length package of packages" are allowed to return a 3113 zero length top-level package. This allows the BIOS to tell the host that 3114 the requested feature is not supported, and supports existing BIOS/ASL 3115 code and practices. 3116 3117 iASL: Changed the "result not used" warning to an error. This is the case 3118 where an ASL operator is effectively a NOOP because the result of the 3119 operation is not stored anywhere. For example: 3120 Add (4, Local0) 3121 There is no target (missing 3rd argument), nor is the function return 3122 value used. This is potentially a very serious problem -- since the code 3123 was probably intended to do something, but for whatever reason, the value 3124 was not stored. Therefore, this issue has been upgraded from a warning to 3125 an error. 3126 3127 AcpiHelp: Added allowable/required argument types to the predefined names 3128 info display. This feature utilizes the recent update to the predefined 3129 names table (above). 3130 3131 ---------------------------------------- 3132 14 February 2013. Summary of changes for version 20130214: 3133 3134 1) ACPICA Kernel-resident Subsystem: 3135 3136 Fixed a possible regression on some hosts: Reinstated the safe return 3137 macros (return_ACPI_STATUS, etc.) that ensure that the argument is 3138 evaluated only once. Although these macros are not needed for the ACPICA 3139 code itself, they are often used by ACPI-related host device drivers 3140 where 3141 the safe feature may be necessary. 3142 3143 Fixed several issues related to the ACPI 5.0 reduced hardware support 3144 (SOC): Now ensure that if the platform declares itself as hardware- 3145 reduced 3146 via the FADT, the following functions become NOOPs (and always return 3147 AE_OK) because ACPI is always enabled by definition on these machines: 3148 AcpiEnable 3149 AcpiDisable 3150 AcpiHwGetMode 3151 AcpiHwSetMode 3152 3153 Dynamic Object Repair: Implemented additional runtime repairs for 3154 predefined name return values. Both of these repairs can simplify code in 3155 the related device drivers that invoke these methods: 3156 1) For the _STR and _MLS names, automatically repair/convert an ASCII 3157 string to a Unicode buffer. 3158 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with 3159 a 3160 lone end tag descriptor in the following cases: A Return(0) was executed, 3161 a null buffer was returned, or no object at all was returned (non-slack 3162 mode only). Adds a new file, nsconvert.c 3163 ACPICA BZ 998. Bob Moore, Lv Zheng. 3164 3165 Resource Manager: Added additional code to prevent possible infinite 3166 loops 3167 while traversing corrupted or ill-formed resource template buffers. Check 3168 for zero-length resource descriptors in all code that loops through 3169 resource templates (the length field is used to index through the 3170 template). This change also hardens the external AcpiWalkResources and 3171 AcpiWalkResourceBuffer interfaces. 3172 3173 Local Cache Manager: Enhanced the main data structure to eliminate an 3174 unnecessary mechanism to access the next object in the list. Actually 3175 provides a small performance enhancement for hosts that use the local 3176 ACPICA cache manager. Jung-uk Kim. 3177 3178 Example Code and Data Size: These are the sizes for the OS-independent 3179 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3180 debug version of the code includes the debug output trace mechanism and 3181 has a much larger code and data size. 3182 3183 Previous Release: 3184 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 3185 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 3186 Current Release: 3187 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 3188 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 3189 3190 3191 2) iASL Compiler/Disassembler and Tools: 3192 3193 iASL/Disassembler: Fixed several issues with the definition of the ACPI 3194 5.0 RASF table (RAS Feature Table). This change incorporates late changes 3195 that were made to the ACPI 5.0 specification. 3196 3197 iASL/Disassembler: Added full support for the following new ACPI tables: 3198 1) The MTMR table (MID Timer Table) 3199 2) The VRTC table (Virtual Real Time Clock Table). 3200 Includes header file, disassembler, table compiler, and template support 3201 for both tables. 3202 3203 iASL: Implemented compile-time validation of package objects returned by 3204 predefined names. This new feature validates static package objects 3205 returned by the various predefined names defined to return packages. Both 3206 object types and package lengths are validated, for both parent packages 3207 and sub-packages, if any. The code is similar in structure and behavior 3208 to 3209 the runtime repair mechanism within the AML interpreter and uses the 3210 existing predefined name information table. Adds a new file, aslprepkg.c. 3211 ACPICA BZ 938. 3212 3213 iASL: Implemented auto-detection of binary ACPI tables for disassembly. 3214 This feature detects a binary file with a valid ACPI table header and 3215 invokes the disassembler automatically. Eliminates the need to 3216 specifically invoke the disassembler with the -d option. ACPICA BZ 862. 3217 3218 iASL/Disassembler: Added several warnings for the case where there are 3219 unresolved control methods during the disassembly. This can potentially 3220 cause errors when the output file is compiled, because the disassembler 3221 assumes zero method arguments in these cases (it cannot determine the 3222 actual number of arguments without resolution/definition of the method). 3223 3224 Debugger: Added support to display all resources with a single command. 3225 Invocation of the resources command with no arguments will now display 3226 all 3227 resources within the current namespace. 3228 3229 AcpiHelp: Added descriptive text for each ACPICA exception code displayed 3230 via the -e option. 3231 3232 ---------------------------------------- 3233 17 January 2013. Summary of changes for version 20130117: 3234 3235 1) ACPICA Kernel-resident Subsystem: 3236 3237 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to 3238 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx 3239 objects to return a package containing one integer, most BIOS code 3240 returns 3241 two integers and the previous code reflects that. However, we also need 3242 to 3243 support BIOS code that actually implements to the ACPI spec, and this 3244 change reflects this. 3245 3246 Fixed two issues with the ACPI_DEBUG_PRINT macros: 3247 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for 3248 C compilers that require this support. 3249 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since 3250 ACPI_DEBUG is already used by many of the various hosts. 3251 3252 Updated all ACPICA copyrights and signons to 2013. Added the 2013 3253 copyright to all module headers and signons, including the standard Linux 3254 header. This affects virtually every file in the ACPICA core subsystem, 3255 iASL compiler, all ACPICA utilities, and the test suites. 3256 3257 Example Code and Data Size: These are the sizes for the OS-independent 3258 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3259 debug version of the code includes the debug output trace mechanism and 3260 has a much larger code and data size. 3261 3262 Previous Release: 3263 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 3264 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 3265 Current Release: 3266 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 3267 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 3268 3269 3270 2) iASL Compiler/Disassembler and Tools: 3271 3272 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and 3273 prevent a possible fault on some hosts. Some C libraries modify the arg 3274 pointer parameter to vfprintf making it difficult to call it twice in the 3275 AcpiOsVprintf function. Use a local buffer to workaround this issue. This 3276 does not affect the Windows OSL since the Win C library does not modify 3277 the arg pointer. Chao Guan, Bob Moore. 3278 3279 iASL: Fixed a possible infinite loop when the maximum error count is 3280 reached. If an output file other than the .AML file is specified (such as 3281 a listing file), and the maximum number of errors is reached, do not 3282 attempt to flush data to the output file(s) as the compiler is aborting. 3283 This can cause an infinite loop as the max error count code essentially 3284 keeps calling itself. 3285 3286 iASL/Disassembler: Added an option (-in) to ignore NOOP 3287 opcodes/operators. 3288 Implemented for both the compiler and the disassembler. Often, the NOOP 3289 opcode is used as padding for packages that are changed dynamically by 3290 the 3291 BIOS. When disassembled and recompiled, these NOOPs will cause syntax 3292 errors. This option causes the disassembler to ignore all NOOP opcodes 3293 (0xA3), and it also causes the compiler to ignore all ASL source code 3294 NOOP 3295 statements as well. 3296 3297 Debugger: Enhanced the Sleep command to execute all sleep states. This 3298 change allows Sleep to be invoked with no arguments and causes the 3299 debugger to execute all of the sleep states, 0-5, automatically. 3300 3301 ---------------------------------------- 3302 20 December 2012. Summary of changes for version 20121220: 3303 3304 1) ACPICA Kernel-resident Subsystem: 3305 3306 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an 3307 alternate entry point for AcpiWalkResources and improves the usability of 3308 the resource manager by accepting as input a buffer containing the output 3309 of either a _CRS, _PRS, or _AEI method. The key functionality is that the 3310 input buffer is not deleted by this interface so that it can be used by 3311 the host later. See the ACPICA reference for details. 3312 3313 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table 3314 (DSDT version < 2). The constant will be truncated and this warning 3315 reflects that behavior. 3316 3317 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ, 3318 ExtendedInterrupt, and GpioInt descriptors. This change adds support to 3319 both get and set the new wake bit in these descriptors, separately from 3320 the existing share bit. Reported by Aaron Lu. 3321 3322 Interpreter: Fix Store() when an implicit conversion is not possible. For 3323 example, in the cases such as a store of a string to an existing package 3324 object, implement the store as a CopyObject(). This is a small departure 3325 from the ACPI specification which states that the control method should 3326 be 3327 aborted in this case. However, the ASLTS suite depends on this behavior. 3328 3329 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT 3330 macros: check if debug output is currently enabled as soon as possible to 3331 minimize performance impact if debug is in fact not enabled. 3332 3333 Source code restructuring: Cleanup to improve modularity. The following 3334 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c, 3335 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c. 3336 Associated makefiles and project files have been updated. 3337 3338 Changed an exception code for LoadTable operator. For the case where one 3339 of the input strings is too long, change the returned exception code from 3340 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT. 3341 3342 Fixed a possible memory leak in dispatcher error path. On error, delete 3343 the mutex object created during method mutex creation. Reported by 3344 tim.gardner (a] canonical.com. 3345 3346 Example Code and Data Size: These are the sizes for the OS-independent 3347 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3348 debug version of the code includes the debug output trace mechanism and 3349 has a much larger code and data size. 3350 3351 Previous Release: 3352 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 3353 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 3354 Current Release: 3355 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 3356 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 3357 3358 3359 2) iASL Compiler/Disassembler and Tools: 3360 3361 iASL: Disallow a method call as argument to the ObjectType ASL operator. 3362 This change tracks an errata to the ACPI 5.0 document. The AML grammar 3363 will not allow the interpreter to differentiate between a method and a 3364 method invocation when these are used as an argument to the ObjectType 3365 operator. The ACPI specification change is to disallow a method 3366 invocation 3367 (UserTerm) for the ObjectType operator. 3368 3369 Finish support for the TPM2 and CSRT tables in the headers, table 3370 compiler, and disassembler. 3371 3372 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout 3373 always expires immediately if the semaphore is not available. The 3374 original 3375 code was using a relative-time timeout, but sem_timedwait requires the 3376 use 3377 of an absolute time. 3378 3379 iASL: Added a remark if the Timer() operator is used within a 32-bit 3380 table. This operator returns a 64-bit time value that will be truncated 3381 within a 32-bit table. 3382 3383 iASL Source code restructuring: Cleanup to improve modularity. The 3384 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c, 3385 aslmethod.c, and aslfileio.c. Associated makefiles and project files have 3386 been updated. 3387 3388 3389 ---------------------------------------- 3390 14 November 2012. Summary of changes for version 20121114: 3391 3392 1) ACPICA Kernel-resident Subsystem: 3393 3394 Implemented a performance enhancement for ACPI/AML Package objects. This 3395 change greatly increases the performance of Package objects within the 3396 interpreter. It changes the processing of reference counts for packages 3397 by 3398 optimizing for the most common case where the package sub-objects are 3399 either Integers, Strings, or Buffers. Increases the overall performance 3400 of 3401 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by 3402 2X.) 3403 Chao Guan. ACPICA BZ 943. 3404 3405 Implemented and deployed common macros to extract flag bits from resource 3406 descriptors. Improves readability and maintainability of the code. Fixes 3407 a 3408 problem with the UART serial bus descriptor for the number of data bits 3409 flags (was incorrectly 2 bits, should be 3). 3410 3411 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation 3412 of the macros and changed the SETx macros to the style of (destination, 3413 source). Also added ACPI_CASTx companion macros. Lv Zheng. 3414 3415 Example Code and Data Size: These are the sizes for the OS-independent 3416 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3417 debug version of the code includes the debug output trace mechanism and 3418 has a much larger code and data size. 3419 3420 Previous Release: 3421 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 3422 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 3423 Current Release: 3424 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 3425 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 3426 3427 3428 2) iASL Compiler/Disassembler and Tools: 3429 3430 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change 3431 adds the ShareAndWake and ExclusiveAndWake flags which were added to the 3432 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986. 3433 3434 Disassembler: Fixed a problem with external declaration generation. Fixes 3435 a problem where an incorrect pathname could be generated for an external 3436 declaration if the original reference to the object includes leading 3437 carats (^). ACPICA BZ 984. 3438 3439 Debugger: Completed a major update for the Disassemble<method> command. 3440 This command was out-of-date and did not properly disassemble control 3441 methods that had any reasonable complexity. This fix brings the command 3442 up 3443 to the same level as the rest of the disassembler. Adds one new file, 3444 dmdeferred.c, which is existing code that is now common with the main 3445 disassembler and the debugger disassemble command. ACPICA MZ 978. 3446 3447 iASL: Moved the parser entry prototype to avoid a duplicate declaration. 3448 Newer versions of Bison emit this prototype, so moved the prototype out 3449 of 3450 the iASL header to where it is actually used in order to avoid a 3451 duplicate 3452 declaration. 3453 3454 iASL/Tools: Standardized use of the stream I/O functions: 3455 1) Ensure check for I/O error after every fopen/fread/fwrite 3456 2) Ensure proper order of size/count arguments for fread/fwrite 3457 3) Use test of (Actual != Requested) after all fwrite, and most fread 3458 4) Standardize I/O error messages 3459 Improves reliability and maintainability of the code. Bob Moore, Lv 3460 Zheng. 3461 ACPICA BZ 981. 3462 3463 Disassembler: Prevent duplicate External() statements. During generation 3464 of external statements, detect similar pathnames that are actually 3465 duplicates such as these: 3466 External (\ABCD) 3467 External (ABCD) 3468 Remove all leading '\' characters from pathnames during the external 3469 statement generation so that duplicates will be detected and tossed. 3470 ACPICA BZ 985. 3471 3472 Tools: Replace low-level I/O with stream I/O functions. Replace 3473 open/read/write/close with the stream I/O equivalents 3474 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob 3475 Moore. 3476 3477 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table 3478 name header so that AcpiXtract recognizes the output file/table. 3479 3480 iASL: Remove obsolete -2 option flag. Originally intended to force the 3481 compiler/disassembler into an ACPI 2.0 mode, this was never implemented 3482 and the entire concept is now obsolete. 3483 3484 ---------------------------------------- 3485 18 October 2012. Summary of changes for version 20121018: 3486 3487 3488 1) ACPICA Kernel-resident Subsystem: 3489 3490 Updated support for the ACPI 5.0 MPST table. Fixes some problems 3491 introduced by late changes to the table as it was added to the ACPI 5.0 3492 specification. Includes header, disassembler, and data table compiler 3493 support as well as a new version of the MPST template. 3494 3495 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI 3496 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID 3497 methods: _HID, _CID, and _UID. 3498 3499 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed 3500 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent 3501 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId) 3502 names for their various drivers. Affects the AcpiGetObjectInfo external 3503 interface, and other internal interfaces as well. 3504 3505 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME. 3506 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME 3507 on machines that support non-aligned transfers. Optimizes for this case 3508 rather than using a strncpy. With assistance from Zheng Lv. 3509 3510 Resource Manager: Small fix for buffer size calculation. Fixed a one byte 3511 error in the output buffer calculation. Feng Tang. ACPICA BZ 849. 3512 3513 Added a new debug print message for AML mutex objects that are force- 3514 released. At control method termination, any currently acquired mutex 3515 objects are force-released. Adds a new debug-only message for each one 3516 that is released. 3517 3518 Audited/updated all ACPICA return macros and the function debug depth 3519 counter: 1) Ensure that all functions that use the various TRACE macros 3520 also use the appropriate ACPICA return macros. 2) Ensure that all normal 3521 return statements surround the return expression (value) with parens to 3522 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng, 3523 Zheng Lv, Bob Moore. ACPICA Bugzilla 972. 3524 3525 Global source code changes/maintenance: All extra lines at the start and 3526 end of each source file have been removed for consistency. Also, within 3527 comments, all new sentences start with a single space instead of a double 3528 space, again for consistency across the code base. 3529 3530 Example Code and Data Size: These are the sizes for the OS-independent 3531 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3532 debug version of the code includes the debug output trace mechanism and 3533 has a much larger code and data size. 3534 3535 Previous Release: 3536 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 3537 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 3538 Current Release: 3539 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 3540 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 3541 3542 3543 2) iASL Compiler/Disassembler and Tools: 3544 3545 AcpiExec: Improved the algorithm used for memory leak/corruption 3546 detection. Added some intelligence to the code that maintains the global 3547 list of allocated memory. The list is now ordered by allocated memory 3548 address, significantly improving performance. When running AcpiExec on 3549 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending 3550 on the platform and/or the environment. Note, this performance 3551 enhancement affects the AcpiExec utility only, not the kernel-resident 3552 ACPICA code. 3553 3554 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For 3555 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix 3556 incorrect table offset reported for invalid opcodes. Report the original 3557 32-bit value for bad ACPI_NAMEs (as well as the repaired name.) 3558 3559 Disassembler: Enhanced the -vt option to emit the binary table data in 3560 hex format to assist with debugging. 3561 3562 Fixed a potential filename buffer overflow in osunixdir.c. Increased the 3563 size of file structure. Colin Ian King. 3564 3565 ---------------------------------------- 3566 13 September 2012. Summary of changes for version 20120913: 3567 3568 3569 1) ACPICA Kernel-resident Subsystem: 3570 3571 ACPI 5.0: Added two new notify types for the Hardware Error Notification 3572 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5) 3573 and 3574 MCE(6). 3575 3576 Table Manager: Merged/removed duplicate code in the root table resize 3577 functions. One function is external, the other is internal. Lv Zheng, 3578 ACPICA 3579 BZ 846. 3580 3581 Makefiles: Completely removed the obsolete "Linux" makefiles under 3582 acpica/generate/linux. These makefiles are obsolete and have been 3583 replaced 3584 by 3585 the generic unix makefiles under acpica/generate/unix. 3586 3587 Makefiles: Ensure that binary files always copied properly. Minor rule 3588 change 3589 to ensure that the final binary output files are always copied up to the 3590 appropriate binary directory (bin32 or bin64.) 3591 3592 Example Code and Data Size: These are the sizes for the OS-independent 3593 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3594 debug 3595 version of the code includes the debug output trace mechanism and has a 3596 much 3597 larger code and data size. 3598 3599 Previous Release: 3600 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 3601 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 3602 Current Release: 3603 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 3604 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 3605 3606 3607 2) iASL Compiler/Disassembler and Tools: 3608 3609 Disassembler: Fixed a possible fault during the disassembly of resource 3610 descriptors when a second parse is required because of the invocation of 3611 external control methods within the table. With assistance from 3612 adq (a] lidskialf.net. ACPICA BZ 976. 3613 3614 iASL: Fixed a namepath optimization problem. An error can occur if the 3615 parse 3616 node that contains the namepath to be optimized does not have a parent 3617 node 3618 that is a named object. This change fixes the problem. 3619 3620 iASL: Fixed a regression where the AML file is not deleted on errors. The 3621 AML 3622 output file should be deleted if there are any errors during the 3623 compiler. 3624 The 3625 only exception is if the -f (force output) option is used. ACPICA BZ 974. 3626 3627 iASL: Added a feature to automatically increase internal line buffer 3628 sizes. 3629 Via realloc(), automatically increase the internal line buffer sizes as 3630 necessary to support very long source code lines. The current version of 3631 the 3632 preprocessor requires a buffer long enough to contain full source code 3633 lines. 3634 This change increases the line buffer(s) if the input lines go beyond the 3635 current buffer size. This eliminates errors that occurred when a source 3636 code 3637 line was longer than the buffer. 3638 3639 iASL: Fixed a problem with constant folding in method declarations. The 3640 SyncLevel term is a ByteConstExpr, and incorrect code would be generated 3641 if a 3642 Type3 opcode was used. 3643 3644 Debugger: Improved command help support. For incorrect argument count, 3645 display 3646 full help for the command. For help command itself, allow an argument to 3647 specify a command. 3648 3649 Test Suites: Several bug fixes for the ASLTS suite reduces the number of 3650 errors during execution of the suite. Guan Chao. 3651 3652 ---------------------------------------- 3653 16 August 2012. Summary of changes for version 20120816: 3654 3655 3656 1) ACPICA Kernel-resident Subsystem: 3657 3658 Removed all use of the deprecated _GTS and _BFS predefined methods. The 3659 _GTS 3660 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially 3661 deprecated and will probably be removed from the ACPI specification. 3662 Windows 3663 does not invoke them, and reportedly never will. The final nail in the 3664 coffin 3665 is that the ACPI specification states that these methods must be run with 3666 interrupts off, which is not going to happen in a kernel interpreter. 3667 Note: 3668 Linux has removed all use of the methods also. It was discovered that 3669 invoking these functions caused failures on some machines, probably 3670 because 3671 they were never tested since Windows does not call them. Affects two 3672 external 3673 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng. 3674 ACPICA BZ 969. 3675 3676 Implemented support for complex bit-packed buffers returned from the _PLD 3677 (Physical Location of Device) predefined method. Adds a new external 3678 interface, AcpiDecodePldBuffer that parses the buffer into a more usable 3679 C 3680 structure. Note: C Bitfields cannot be used for this type of predefined 3681 structure since the memory layout of individual bitfields is not defined 3682 by 3683 the C language. In addition, there are endian concerns where a compiler 3684 will 3685 change the bitfield ordering based on the machine type. The new ACPICA 3686 interface eliminates these issues, and should be called after _PLD is 3687 executed. ACPICA BZ 954. 3688 3689 Implemented a change to allow a scope change to root (via "Scope (\)") 3690 during 3691 execution of module-level ASL code (code that is executed at table load 3692 time.) Lin Ming. 3693 3694 Added the Windows8/Server2012 string for the _OSI method. This change 3695 adds 3696 a 3697 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server 3698 2012. 3699 3700 Added header support for the new ACPI tables DBG2 (Debug Port Table Type 3701 2) 3702 and CSRT (Core System Resource Table). 3703 3704 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined 3705 names. This simplifies access to the buffers returned by these predefined 3706 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956. 3707 3708 GPE support: Removed an extraneous parameter from the various low-level 3709 internal GPE functions. Tang Feng. 3710 3711 Removed the linux makefiles from the unix packages. The generate/linux 3712 makefiles are obsolete and have been removed from the unix tarball 3713 release 3714 packages. The replacement makefiles are under generate/unix, and there is 3715 a 3716 top-level makefile under the main acpica directory. ACPICA BZ 967, 912. 3717 3718 Updates for Unix makefiles: 3719 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven. 3720 2) Update linker flags (move to end of command line) for AcpiExec 3721 utility. 3722 Guan Chao. 3723 3724 Split ACPICA initialization functions to new file, utxfinit.c. Split from 3725 utxface.c to improve modularity and reduce file size. 3726 3727 Example Code and Data Size: These are the sizes for the OS-independent 3728 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3729 debug version of the code includes the debug output trace mechanism and 3730 has a 3731 much larger code and data size. 3732 3733 Previous Release: 3734 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 3735 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 3736 Current Release: 3737 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 3738 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 3739 3740 3741 2) iASL Compiler/Disassembler and Tools: 3742 3743 iASL: Fixed a problem with constant folding for fixed-length constant 3744 expressions. The constant-folding code was not being invoked for constant 3745 expressions that allow the use of type 3/4/5 opcodes to generate 3746 constants 3747 for expressions such as ByteConstExpr, WordConstExpr, etc. This could 3748 result 3749 in the generation of invalid AML bytecode. ACPICA BZ 970. 3750 3751 iASL: Fixed a generation issue on newer versions of Bison. Newer versions 3752 apparently automatically emit some of the necessary externals. This 3753 change 3754 handles these versions in order to eliminate generation warnings. 3755 3756 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables. 3757 3758 Disassembler: Add support to decode _PLD buffers. The decoded buffer 3759 appears 3760 within comments in the output file. 3761 3762 Debugger: Fixed a regression with the "Threads" command where 3763 AE_BAD_PARAMETER was always returned. 3764 3765 ---------------------------------------- 3766 11 July 2012. Summary of changes for version 20120711: 3767 3768 1) ACPICA Kernel-resident Subsystem: 3769 3770 Fixed a possible fault in the return package object repair code. Fixes a 3771 problem that can occur when a lone package object is wrapped with an 3772 outer 3773 package object in order to force conformance to the ACPI specification. 3774 Can 3775 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, 3776 _DLM, 3777 _CSD, _PSD, _TSD. 3778 3779 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the 3780 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the 3781 ARB_DIS bit must be implemented in the host-dependent C3 processor power 3782 state 3783 support. Note, ARB_DIS is obsolete and only applies to older chipsets, 3784 both 3785 Intel and other vendors. (for Intel: ICH4-M and earlier) 3786 3787 This change removes the code to disable/enable bus master arbitration 3788 during 3789 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register 3790 causes 3791 resume problems on some machines. The change has been in use for over 3792 seven 3793 years within Linux. 3794 3795 Implemented two new external interfaces to support host-directed dynamic 3796 ACPI 3797 table load and unload. They are intended to simplify the host 3798 implementation 3799 of hot-plug support: 3800 AcpiLoadTable: Load an SSDT from a buffer into the namespace. 3801 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the 3802 table. 3803 See the ACPICA reference for additional details. Adds one new file, 3804 components/tables/tbxfload.c 3805 3806 Implemented and deployed two new interfaces for errors and warnings that 3807 are 3808 known to be caused by BIOS/firmware issues: 3809 AcpiBiosError: Prints "ACPI Firmware Error" message. 3810 AcpiBiosWarning: Prints "ACPI Firmware Warning" message. 3811 Deployed these new interfaces in the ACPICA Table Manager code for ACPI 3812 table 3813 and FADT errors. Additional deployment to be completed as appropriate in 3814 the 3815 future. The associated conditional macros are ACPI_BIOS_ERROR and 3816 ACPI_BIOS_WARNING. See the ACPICA reference for additional details. 3817 ACPICA 3818 BZ 3819 843. 3820 3821 Implicit notify support: ensure that no memory allocation occurs within a 3822 critical region. This fix moves a memory allocation outside of the time 3823 that a 3824 spinlock is held. Fixes issues on systems that do not allow this 3825 behavior. 3826 Jung-uk Kim. 3827 3828 Split exception code utilities and tables into a new file, 3829 utilities/utexcep.c 3830 3831 Example Code and Data Size: These are the sizes for the OS-independent 3832 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3833 debug 3834 version of the code includes the debug output trace mechanism and has a 3835 much 3836 larger code and data size. 3837 3838 Previous Release: 3839 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 3840 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 3841 Current Release: 3842 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 3843 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 3844 3845 3846 2) iASL Compiler/Disassembler and Tools: 3847 3848 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead 3849 of 3850 0. Jung-uk Kim. 3851 3852 Debugger: Enhanced the "tables" command to emit additional information 3853 about 3854 the current set of ACPI tables, including the owner ID and flags decode. 3855 3856 Debugger: Reimplemented the "unload" command to use the new 3857 AcpiUnloadParentTable external interface. This command was disable 3858 previously 3859 due to need for an unload interface. 3860 3861 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e 3862 option 3863 will decode 16-bit hex status codes (ACPI_STATUS) to name strings. 3864 3865 ---------------------------------------- 3866 20 June 2012. Summary of changes for version 20120620: 3867 3868 3869 1) ACPICA Kernel-resident Subsystem: 3870 3871 Implemented support to expand the "implicit notify" feature to allow 3872 multiple 3873 devices to be notified by a single GPE. This feature automatically 3874 generates a 3875 runtime device notification in the absence of a BIOS-provided GPE control 3876 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit 3877 notify is 3878 provided by ACPICA for Windows compatibility, and is a workaround for 3879 BIOS 3880 AML 3881 code errors. See the description of the AcpiSetupGpeForWake interface in 3882 the 3883 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 3884 3885 Changed some comments and internal function names to simplify and ensure 3886 correctness of the Linux code translation. No functional changes. 3887 3888 Example Code and Data Size: These are the sizes for the OS-independent 3889 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3890 debug 3891 version of the code includes the debug output trace mechanism and has a 3892 much 3893 larger code and data size. 3894 3895 Previous Release: 3896 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 3897 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 3898 Current Release: 3899 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 3900 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 3901 3902 3903 2) iASL Compiler/Disassembler and Tools: 3904 3905 Disassembler: Added support to emit short, commented descriptions for the 3906 ACPI 3907 predefined names in order to improve the readability of the disassembled 3908 output. ACPICA BZ 959. Changes include: 3909 1) Emit descriptions for all standard predefined names (_INI, _STA, 3910 _PRW, 3911 etc.) 3912 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 3913 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, 3914 etc.) 3915 3916 AcpiSrc: Fixed several long-standing Linux code translation issues. 3917 Argument 3918 descriptions in function headers are now translated properly to lower 3919 case 3920 and 3921 underscores. ACPICA BZ 961. Also fixes translation problems such as 3922 these: 3923 (old -> new) 3924 i_aSL -> iASL 3925 00-7_f -> 00-7F 3926 16_k -> 16K 3927 local_fADT -> local_FADT 3928 execute_oSI -> execute_OSI 3929 3930 iASL: Fixed a problem where null bytes were inadvertently emitted into 3931 some 3932 listing files. 3933 3934 iASL: Added the existing debug options to the standard help screen. There 3935 are 3936 no longer two different help screens. ACPICA BZ 957. 3937 3938 AcpiHelp: Fixed some typos in the various predefined name descriptions. 3939 Also 3940 expand some of the descriptions where appropriate. 3941 3942 iASL: Fixed the -ot option (display compile times/statistics). Was not 3943 working 3944 properly for standard output; only worked for the debug file case. 3945 3946 ---------------------------------------- 3947 18 May 2012. Summary of changes for version 20120518: 3948 3949 3950 1) ACPICA Core Subsystem: 3951 3952 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is 3953 defined 3954 to block until asynchronous events such as notifies and GPEs have 3955 completed. 3956 Within ACPICA, it is only called before a notify or GPE handler is 3957 removed/uninstalled. It also may be useful for the host OS within related 3958 drivers such as the Embedded Controller driver. See the ACPICA reference 3959 for 3960 additional information. ACPICA BZ 868. 3961 3962 ACPI Tables: Added a new error message for a possible overflow failure 3963 during 3964 the conversion of FADT 32-bit legacy register addresses to internal 3965 common 3966 64- 3967 bit GAS structure representation. The GAS has a one-byte "bit length" 3968 field, 3969 thus limiting the register length to 255 bits. ACPICA BZ 953. 3970 3971 Example Code and Data Size: These are the sizes for the OS-independent 3972 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3973 debug 3974 version of the code includes the debug output trace mechanism and has a 3975 much 3976 larger code and data size. 3977 3978 Previous Release: 3979 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 3980 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 3981 Current Release: 3982 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 3983 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 3984 3985 3986 2) iASL Compiler/Disassembler and Tools: 3987 3988 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL 3989 macro. 3990 This keyword was added late in the ACPI 5.0 release cycle and was not 3991 implemented until now. 3992 3993 Disassembler: Added support for Operation Region externals. Adds missing 3994 support for operation regions that are defined in another table, and 3995 referenced locally via a Field or BankField ASL operator. Now generates 3996 the 3997 correct External statement. 3998 3999 Disassembler: Several additional fixes for the External() statement 4000 generation 4001 related to some ASL operators. Also, order the External() statements 4002 alphabetically in the disassembler output. Fixes the External() 4003 generation 4004 for 4005 the Create* field, Alias, and Scope operators: 4006 1) Create* buffer field operators - fix type mismatch warning on 4007 disassembly 4008 2) Alias - implement missing External support 4009 3) Scope - fix to make sure all necessary externals are emitted. 4010 4011 iASL: Improved pathname support. For include files, merge the prefix 4012 pathname 4013 with the file pathname and eliminate unnecessary components. Convert 4014 backslashes in all pathnames to forward slashes, for readability. Include 4015 file 4016 pathname changes affect both #include and Include() type operators. 4017 4018 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the 4019 end 4020 of a valid line by inserting a newline and then returning the EOF during 4021 the 4022 next call to GetNextLine. Prevents the line from being ignored due to EOF 4023 condition. 4024 4025 iASL: Implemented some changes to enhance the IDE support (-vi option.) 4026 Error 4027 and Warning messages are now correctly recognized for both the source 4028 code 4029 browser and the global error and warning counts. 4030 4031 ---------------------------------------- 4032 20 April 2012. Summary of changes for version 20120420: 4033 4034 4035 1) ACPICA Core Subsystem: 4036 4037 Implemented support for multiple notify handlers. This change adds 4038 support 4039 to 4040 allow multiple system and device notify handlers on Device, Thermal Zone, 4041 and 4042 Processor objects. This can simplify the host OS notification 4043 implementation. 4044 Also re-worked and restructured the entire notify support code to 4045 simplify 4046 handler installation, handler removal, notify event queuing, and notify 4047 dispatch to handler(s). Note: there can still only be two global notify 4048 handlers - one for system notifies and one for device notifies. There are 4049 no 4050 changes to the existing handler install/remove interfaces. Lin Ming, Bob 4051 Moore, Rafael Wysocki. 4052 4053 Fixed a regression in the package repair code where the object reference 4054 count was calculated incorrectly. Regression was introduced in the commit 4055 "Support to add Package wrappers". 4056 4057 Fixed a couple possible memory leaks in the AML parser, in the error 4058 recovery 4059 path. Jesper Juhl, Lin Ming. 4060 4061 Example Code and Data Size: These are the sizes for the OS-independent 4062 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4063 debug version of the code includes the debug output trace mechanism and 4064 has a 4065 much larger code and data size. 4066 4067 Previous Release: 4068 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 4069 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 4070 Current Release: 4071 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 4072 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 4073 4074 4075 2) iASL Compiler/Disassembler and Tools: 4076 4077 iASL: Fixed a problem with the resource descriptor support where the 4078 length 4079 of the StartDependentFn and StartDependentFnNoPrio descriptors were not 4080 included in cumulative descriptor offset, resulting in incorrect values 4081 for 4082 resource tags within resource descriptors appearing after a 4083 StartDependent* 4084 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 4085 4086 iASL and Preprocessor: Implemented full support for the #line directive 4087 to 4088 correctly track original source file line numbers through the .i 4089 preprocessor 4090 output file - for error and warning messages. 4091 4092 iASL: Expand the allowable byte constants for address space IDs. 4093 Previously, 4094 the allowable range was 0x80-0xFF (user-defined spaces), now the range is 4095 0x0A-0xFF to allow for custom and new IDs without changing the compiler. 4096 4097 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 4098 4099 iASL: Add option to completely disable the preprocessor (-Pn). 4100 4101 iASL: Now emit all error/warning messages to standard error (stderr) by 4102 default (instead of the previous stdout). 4103 4104 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). 4105 Update 4106 for resource descriptor offset fix above. Update/cleanup error output 4107 routines. Enable and send iASL errors/warnings to an error logfile 4108 (error.txt). Send all other iASL output to a logfile (compiler.txt). 4109 Fixed 4110 several extraneous "unrecognized operator" messages. 4111 4112 ---------------------------------------- 4113 20 March 2012. Summary of changes for version 20120320: 4114 4115 4116 1) ACPICA Core Subsystem: 4117 4118 Enhanced the sleep/wake interfaces to optionally execute the _GTS method 4119 (Going To Sleep) and the _BFS method (Back From Sleep). Windows 4120 apparently 4121 does not execute these methods, and therefore these methods are often 4122 untested. It has been seen on some systems where the execution of these 4123 methods causes errors and also prevents the machine from entering S5. It 4124 is 4125 therefore suggested that host operating systems do not execute these 4126 methods 4127 by default. In the future, perhaps these methods can be optionally 4128 executed 4129 based on the age of the system and/or what is the newest version of 4130 Windows 4131 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState 4132 and 4133 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 4134 Ming. 4135 4136 Fixed a problem where the length of the local/common FADT was set too 4137 early. 4138 The local FADT table length cannot be set to the common length until the 4139 original length has been examined. There is code that checks the table 4140 length 4141 and sets various fields appropriately. This can affect older machines 4142 with 4143 early FADT versions. For example, this can cause inadvertent writes to 4144 the 4145 CST_CNT register. Julian Anastasov. 4146 4147 Fixed a mapping issue related to a physical table override. Use the 4148 deferred 4149 mapping mechanism for tables loaded via the physical override OSL 4150 interface. 4151 This allows for early mapping before the virtual memory manager is 4152 available. 4153 Thomas Renninger, Bob Moore. 4154 4155 Enhanced the automatic return-object repair code: Repair a common problem 4156 with 4157 predefined methods that are defined to return a variable-length Package 4158 of 4159 sub-objects. If there is only one sub-object, some BIOS ASL code 4160 mistakenly 4161 simply returns the single object instead of a Package with one sub- 4162 object. 4163 This new support will repair this error by wrapping a Package object 4164 around 4165 the original object, creating the correct and expected Package with one 4166 sub- 4167 object. Names that can be repaired in this manner include: _ALR, _CSD, 4168 _HPX, 4169 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 4170 939. 4171 4172 Changed the exception code returned for invalid ACPI paths passed as 4173 parameters to external interfaces such as AcpiEvaluateObject. Was 4174 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 4175 4176 Example Code and Data Size: These are the sizes for the OS-independent 4177 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4178 debug 4179 version of the code includes the debug output trace mechanism and has a 4180 much 4181 larger code and data size. 4182 4183 Previous Release: 4184 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 4185 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 4186 Current Release: 4187 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 4188 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 4189 4190 4191 2) iASL Compiler/Disassembler and Tools: 4192 4193 iASL: Added the infrastructure and initial implementation of a integrated 4194 C- 4195 like preprocessor. This will simplify BIOS development process by 4196 eliminating 4197 the need for a separate preprocessing step during builds. On Windows, it 4198 also 4199 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 4200 features including full #define() macro support are still under 4201 development. 4202 These preprocessor directives are supported: 4203 #define 4204 #elif 4205 #else 4206 #endif 4207 #error 4208 #if 4209 #ifdef 4210 #ifndef 4211 #include 4212 #pragma message 4213 #undef 4214 #warning 4215 In addition, these new command line options are supported: 4216 -D <symbol> Define symbol for preprocessor use 4217 -li Create preprocessed output file (*.i) 4218 -P Preprocess only and create preprocessor output file (*.i) 4219 4220 Table Compiler: Fixed a problem where the equals operator within an 4221 expression 4222 did not work properly. 4223 4224 Updated iASL to use the current versions of Bison/Flex. Updated the 4225 Windows 4226 project file to invoke these tools from the standard location. ACPICA BZ 4227 904. 4228 Versions supported: 4229 Flex for Windows: V2.5.4 4230 Bison for Windows: V2.4.1 4231 4232 ---------------------------------------- 4233 15 February 2012. Summary of changes for version 20120215: 4234 4235 4236 1) ACPICA Core Subsystem: 4237 4238 There have been some major changes to the sleep/wake support code, as 4239 described below (a - e). 4240 4241 a) The AcpiLeaveSleepState has been split into two interfaces, similar to 4242 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 4243 AcpiLeaveSleepStatePrep. This allows the host to perform actions between 4244 the 4245 time the _BFS method is called and the _WAK method is called. NOTE: all 4246 hosts 4247 must update their wake/resume code or else sleep/wake will not work 4248 properly. 4249 Rafael Wysocki. 4250 4251 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the 4252 _WAK 4253 method. Some machines require that the GPEs are enabled before the _WAK 4254 method 4255 is executed. Thomas Renninger. 4256 4257 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) 4258 bit. 4259 Some BIOS code assumes that WAK_STS will be cleared on resume and use it 4260 to 4261 determine whether the system is rebooting or resuming. Matthew Garrett. 4262 4263 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From 4264 Sleep) to 4265 match the ACPI specification requirement. Rafael Wysocki. 4266 4267 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 4268 registers within the V5 FADT. This support adds two new files: 4269 hardware/hwesleep.c implements the support for the new registers. Moved 4270 all 4271 sleep/wake external interfaces to hardware/hwxfsleep.c. 4272 4273 4274 Added a new OSL interface for ACPI table overrides, 4275 AcpiOsPhysicalTableOverride. This interface allows the host to override a 4276 table via a physical address, instead of the logical address required by 4277 AcpiOsTableOverride. This simplifies the host implementation. Initial 4278 implementation by Thomas Renninger. The ACPICA implementation creates a 4279 single 4280 shared function for table overrides that attempts both a logical and a 4281 physical override. 4282 4283 Expanded the OSL memory read/write interfaces to 64-bit data 4284 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 4285 transfer support for GAS register structures passed to AcpiRead and 4286 AcpiWrite. 4287 4288 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a 4289 custom 4290 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) 4291 model. 4292 See the ACPICA reference for details. ACPICA BZ 942. This option removes 4293 about 4294 10% of the code and 5% of the static data, and the following hardware 4295 ACPI 4296 features become unavailable: 4297 PM Event and Control registers 4298 SCI interrupt (and handler) 4299 Fixed Events 4300 General Purpose Events (GPEs) 4301 Global Lock 4302 ACPI PM timer 4303 FACS table (Waking vectors and Global Lock) 4304 4305 Updated the unix tarball directory structure to match the ACPICA git 4306 source 4307 tree. This ensures that the generic unix makefiles work properly (in 4308 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 4309 867. 4310 4311 Updated the return value of the _REV predefined method to integer value 5 4312 to 4313 reflect ACPI 5.0 support. 4314 4315 Moved the external ACPI PM timer interface prototypes to the public 4316 acpixf.h 4317 file where they belong. 4318 4319 Example Code and Data Size: These are the sizes for the OS-independent 4320 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4321 debug 4322 version of the code includes the debug output trace mechanism and has a 4323 much 4324 larger code and data size. 4325 4326 Previous Release: 4327 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 4328 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 4329 Current Release: 4330 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 4331 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 4332 4333 4334 2) iASL Compiler/Disassembler and Tools: 4335 4336 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 4337 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 4338 incorrectly displayed. 4339 4340 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 4341 specification. 4342 4343 ---------------------------------------- 4344 11 January 2012. Summary of changes for version 20120111: 4345 4346 4347 1) ACPICA Core Subsystem: 4348 4349 Implemented a new mechanism to allow host device drivers to check for 4350 address 4351 range conflicts with ACPI Operation Regions. Both SystemMemory and 4352 SystemIO 4353 address spaces are supported. A new external interface, 4354 AcpiCheckAddressRange, 4355 allows drivers to check an address range against the ACPI namespace. See 4356 the 4357 ACPICA reference for additional details. Adds one new file, 4358 utilities/utaddress.c. Lin Ming, Bob Moore. 4359 4360 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep 4361 Control 4362 and 4363 Status registers, update the ACPI 5.0 flags, and update internal data 4364 structures to handle an FADT larger than 256 bytes. The size of the ACPI 4365 5.0 4366 FADT is 268 bytes. 4367 4368 Updated all ACPICA copyrights and signons to 2012. Added the 2012 4369 copyright to 4370 all module headers and signons, including the standard Linux header. This 4371 affects virtually every file in the ACPICA core subsystem, iASL compiler, 4372 and 4373 all ACPICA utilities. 4374 4375 Example Code and Data Size: These are the sizes for the OS-independent 4376 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4377 debug 4378 version of the code includes the debug output trace mechanism and has a 4379 much 4380 larger code and data size. 4381 4382 Previous Release: 4383 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 4384 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 4385 Current Release: 4386 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 4387 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 4388 4389 4390 2) iASL Compiler/Disassembler and Tools: 4391 4392 Disassembler: fixed a problem with the automatic resource tag generation 4393 support. Fixes a problem where the resource tags are inadvertently not 4394 constructed if the table being disassembled contains external references 4395 to 4396 control methods. Moved the actual construction of the tags to after the 4397 final 4398 namespace is constructed (after 2nd parse is invoked due to external 4399 control 4400 method references.) ACPICA BZ 941. 4401 4402 Table Compiler: Make all "generic" operators caseless. These are the 4403 operators 4404 like UINT8, String, etc. Making these caseless improves ease-of-use. 4405 ACPICA BZ 4406 934. 4407 4408 ---------------------------------------- 4409 23 November 2011. Summary of changes for version 20111123: 4410 4411 0) ACPI 5.0 Support: 4412 4413 This release contains full support for the ACPI 5.0 specification, as 4414 summarized below. 4415 4416 Reduced Hardware Support: 4417 ------------------------- 4418 4419 This support allows for ACPI systems without the usual ACPI hardware. 4420 This 4421 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA 4422 will 4423 not attempt to initialize or use any of the usual ACPI hardware. Note, 4424 when 4425 this flag is set, all of the following ACPI hardware is assumed to be not 4426 present and is not initialized or accessed: 4427 4428 General Purpose Events (GPEs) 4429 Fixed Events (PM1a/PM1b and PM Control) 4430 Power Management Timer and Console Buttons (power/sleep) 4431 Real-time Clock Alarm 4432 Global Lock 4433 System Control Interrupt (SCI) 4434 The FACS is assumed to be non-existent 4435 4436 ACPI Tables: 4437 ------------ 4438 4439 All new tables and updates to existing tables are fully supported in the 4440 ACPICA headers (for use by device drivers), the disassembler, and the 4441 iASL 4442 Data Table Compiler. ACPI 5.0 defines these new tables: 4443 4444 BGRT /* Boot Graphics Resource Table */ 4445 DRTM /* Dynamic Root of Trust for Measurement table */ 4446 FPDT /* Firmware Performance Data Table */ 4447 GTDT /* Generic Timer Description Table */ 4448 MPST /* Memory Power State Table */ 4449 PCCT /* Platform Communications Channel Table */ 4450 PMTT /* Platform Memory Topology Table */ 4451 RASF /* RAS Feature table */ 4452 4453 Operation Regions/SpaceIDs: 4454 --------------------------- 4455 4456 All new operation regions are fully supported by the iASL compiler, the 4457 disassembler, and the ACPICA runtime code (for dispatch to region 4458 handlers.) 4459 The new operation region Space IDs are: 4460 4461 GeneralPurposeIo 4462 GenericSerialBus 4463 4464 Resource Descriptors: 4465 --------------------- 4466 4467 All new ASL resource descriptors are fully supported by the iASL 4468 compiler, 4469 the 4470 ASL/AML disassembler, and the ACPICA runtime Resource Manager code 4471 (including 4472 all new predefined resource tags). New descriptors are: 4473 4474 FixedDma 4475 GpioIo 4476 GpioInt 4477 I2cSerialBus 4478 SpiSerialBus 4479 UartSerialBus 4480 4481 ASL/AML Operators, New and Modified: 4482 ------------------------------------ 4483 4484 One new operator is added, the Connection operator, which is used to 4485 associate 4486 a GeneralPurposeIo or GenericSerialBus resource descriptor with 4487 individual 4488 field objects within an operation region. Several new protocols are 4489 associated 4490 with the AccessAs operator. All are fully supported by the iASL compiler, 4491 disassembler, and runtime ACPICA AML interpreter: 4492 4493 Connection // Declare Field Connection 4494 attributes 4495 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 4496 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes 4497 Protocol 4498 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 4499 RawDataBuffer // Data type for Vendor Data 4500 fields 4501 4502 Predefined ASL/AML Objects: 4503 --------------------------- 4504 4505 All new predefined objects/control-methods are supported by the iASL 4506 compiler 4507 and the ACPICA runtime validation/repair (arguments and return values.) 4508 New 4509 predefined names include the following: 4510 4511 Standard Predefined Names (Objects or Control Methods): 4512 _AEI, _CLS, _CPC, _CWS, _DEP, 4513 _DLM, _EVT, _GCP, _CRT, _GWS, 4514 _HRV, _PRE, _PSE, _SRT, _SUB. 4515 4516 Resource Tags (Names used to access individual fields within resource 4517 descriptors): 4518 _DBT, _DPL, _DRS, _END, _FLC, 4519 _IOR, _LIN, _MOD, _PAR, _PHA, 4520 _PIN, _PPI, _POL, _RXL, _SLV, 4521 _SPE, _STB, _TXL, _VEN. 4522 4523 ACPICA External Interfaces: 4524 --------------------------- 4525 4526 Several new interfaces have been defined for use by ACPI-related device 4527 drivers and other host OS services: 4528 4529 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS 4530 to 4531 acquire and release AML mutexes that are defined in the DSDT/SSDT tables 4532 provided by the BIOS. They are intended to be used in conjunction with 4533 the 4534 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 4535 mutual exclusion with the AML code/interpreter. 4536 4537 AcpiGetEventResources: Returns the (formatted) resource descriptors as 4538 defined 4539 by the ACPI 5.0 _AEI object (ACPI Event Information). This object 4540 provides 4541 resource descriptors associated with hardware-reduced platform events, 4542 similar 4543 to the AcpiGetCurrentResources interface. 4544 4545 Operation Region Handlers: For General Purpose IO and Generic Serial Bus 4546 operation regions, information about the Connection() object and any 4547 optional 4548 length information is passed to the region handler within the Context 4549 parameter. 4550 4551 AcpiBufferToResource: This interface converts a raw AML buffer containing 4552 a 4553 resource template or resource descriptor to the ACPI_RESOURCE internal 4554 format 4555 suitable for use by device drivers. Can be used by an operation region 4556 handler 4557 to convert the Connection() buffer object into a ACPI_RESOURCE. 4558 4559 Miscellaneous/Tools/TestSuites: 4560 ------------------------------- 4561 4562 Support for extended _HID names (Four alpha characters instead of three). 4563 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 4564 Support for ACPI 5.0 features in the ASLTS test suite. 4565 Fully updated documentation (ACPICA and iASL reference documents.) 4566 4567 ACPI Table Definition Language: 4568 ------------------------------- 4569 4570 Support for this language was implemented and released as a subsystem of 4571 the 4572 iASL compiler in 2010. (See the iASL compiler User Guide.) 4573 4574 4575 Non-ACPI 5.0 changes for this release: 4576 -------------------------------------- 4577 4578 1) ACPICA Core Subsystem: 4579 4580 Fix a problem with operation region declarations where a failure can 4581 occur 4582 if 4583 the region name and an argument that evaluates to an object (such as the 4584 region address) are in different namespace scopes. Lin Ming, ACPICA BZ 4585 937. 4586 4587 Do not abort an ACPI table load if an invalid space ID is found within. 4588 This 4589 will be caught later if the offending method is executed. ACPICA BZ 925. 4590 4591 Fixed an issue with the FFixedHW space ID where the ID was not always 4592 recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 4593 4594 Fixed a problem with the 32-bit generation of the unix-specific OSL 4595 (osunixxf.c). Lin Ming, ACPICA BZ 936. 4596 4597 Several changes made to enable generation with the GCC 4.6 compiler. 4598 ACPICA BZ 4599 935. 4600 4601 New error messages: Unsupported I/O requests (not 8/16/32 bit), and 4602 Index/Bank 4603 field registers out-of-range. 4604 4605 2) iASL Compiler/Disassembler and Tools: 4606 4607 iASL: Implemented the __PATH__ operator, which returns the full pathname 4608 of 4609 the current source file. 4610 4611 AcpiHelp: Automatically display expanded keyword information for all ASL 4612 operators. 4613 4614 Debugger: Add "Template" command to disassemble/dump resource template 4615 buffers. 4616 4617 Added a new master script to generate and execute the ASLTS test suite. 4618 Automatically handles 32- and 64-bit generation. See tests/aslts.sh 4619 4620 iASL: Fix problem with listing generation during processing of the 4621 Switch() 4622 operator where AML listing was disabled until the entire Switch block was 4623 completed. 4624 4625 iASL: Improve support for semicolon statement terminators. Fix "invalid 4626 character" message for some cases when the semicolon is used. Semicolons 4627 are 4628 now allowed after every <Term> grammar element. ACPICA BZ 927. 4629 4630 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 4631 923. 4632 4633 Disassembler: Fix problem with disassembly of the DataTableRegion 4634 operator 4635 where an inadvertent "Unhandled deferred opcode" message could be 4636 generated. 4637 4638 3) Example Code and Data Size 4639 4640 These are the sizes for the OS-independent acpica.lib produced by the 4641 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 4642 includes the debug output trace mechanism and has a much larger code and 4643 data 4644 size. 4645 4646 Previous Release: 4647 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 4648 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4649 Current Release: 4650 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 4651 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 4652 4653 ---------------------------------------- 4654 22 September 2011. Summary of changes for version 20110922: 4655 4656 0) ACPI 5.0 News: 4657 4658 Support for ACPI 5.0 in ACPICA has been underway for several months and 4659 will 4660 be released at the same time that ACPI 5.0 is officially released. 4661 4662 The ACPI 5.0 specification is on track for release in the next few 4663 months. 4664 4665 1) ACPICA Core Subsystem: 4666 4667 Fixed a problem where the maximum sleep time for the Sleep() operator was 4668 intended to be limited to two seconds, but was inadvertently limited to 4669 20 4670 seconds instead. 4671 4672 Linux and Unix makefiles: Added header file dependencies to ensure 4673 correct 4674 generation of ACPICA core code and utilities. Also simplified the 4675 makefiles 4676 considerably through the use of the vpath variable to specify search 4677 paths. 4678 ACPICA BZ 924. 4679 4680 2) iASL Compiler/Disassembler and Tools: 4681 4682 iASL: Implemented support to check the access length for all fields 4683 created to 4684 access named Resource Descriptor fields. For example, if a resource field 4685 is 4686 defined to be two bits, a warning is issued if a CreateXxxxField() is 4687 used 4688 with an incorrect bit length. This is implemented for all current 4689 resource 4690 descriptor names. ACPICA BZ 930. 4691 4692 Disassembler: Fixed a byte ordering problem with the output of 24-bit and 4693 56- 4694 bit integers. 4695 4696 iASL: Fixed a couple of issues associated with variable-length package 4697 objects. 1) properly handle constants like One, Ones, Zero -- do not make 4698 a 4699 VAR_PACKAGE when these are used as a package length. 2) Allow the 4700 VAR_PACKAGE 4701 opcode (in addition to PACKAGE) when validating object types for 4702 predefined 4703 names. 4704 4705 iASL: Emit statistics for all output files (instead of just the ASL input 4706 and 4707 AML output). Includes listings, hex files, etc. 4708 4709 iASL: Added -G option to the table compiler to allow the compilation of 4710 custom 4711 ACPI tables. The only part of a table that is required is the standard 4712 36- 4713 byte 4714 ACPI header. 4715 4716 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA 4717 headers), 4718 which also adds correct 64-bit support. Also, now all output filenames 4719 are 4720 completely lower case. 4721 4722 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 4723 loading table files. A warning is issued for any such tables. The only 4724 exception is an FADT. This also fixes a possible fault when attempting to 4725 load 4726 non-AML tables. ACPICA BZ 932. 4727 4728 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where 4729 a 4730 missing table terminator could cause a fault when using the -p option. 4731 4732 AcpiSrc: Fixed a possible divide-by-zero fault when generating file 4733 statistics. 4734 4735 3) Example Code and Data Size 4736 4737 These are the sizes for the OS-independent acpica.lib produced by the 4738 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 4739 includes the debug output trace mechanism and has a much larger code and 4740 data 4741 size. 4742 4743 Previous Release (VC 9.0): 4744 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 4745 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4746 Current Release (VC 9.0): 4747 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 4748 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4749 4750 4751 ---------------------------------------- 4752 23 June 2011. Summary of changes for version 20110623: 4753 4754 1) ACPI CA Core Subsystem: 4755 4756 Updated the predefined name repair mechanism to not attempt repair of a 4757 _TSS 4758 return object if a _PSS object is present. We can only sort the _TSS 4759 return 4760 package if there is no _PSS within the same scope. This is because if 4761 _PSS 4762 is 4763 present, the ACPI specification dictates that the _TSS Power Dissipation 4764 field 4765 is to be ignored, and therefore some BIOSs leave garbage values in the 4766 _TSS 4767 Power field(s). In this case, it is best to just return the _TSS package 4768 as- 4769 is. Reported by, and fixed with assistance from Fenghua Yu. 4770 4771 Added an option to globally disable the control method return value 4772 validation 4773 and repair. This runtime option can be used to disable return value 4774 repair 4775 if 4776 this is causing a problem on a particular machine. Also added an option 4777 to 4778 AcpiExec (-dr) to set this disable flag. 4779 4780 All makefiles and project files: Major changes to improve generation of 4781 ACPICA 4782 tools. ACPICA BZ 912: 4783 Reduce default optimization levels to improve compatibility 4784 For Linux, add strict-aliasing=0 for gcc 4 4785 Cleanup and simplify use of command line defines 4786 Cleanup multithread library support 4787 Improve usage messages 4788 4789 Linux-specific header: update handling of THREAD_ID and pthread. For the 4790 32- 4791 bit case, improve casting to eliminate possible warnings, especially with 4792 the 4793 acpica tools. 4794 4795 Example Code and Data Size: These are the sizes for the OS-independent 4796 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4797 debug 4798 version of the code includes the debug output trace mechanism and has a 4799 much 4800 larger code and data size. 4801 4802 Previous Release (VC 9.0): 4803 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 4804 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4805 Current Release (VC 9.0): 4806 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 4807 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4808 4809 2) iASL Compiler/Disassembler and Tools: 4810 4811 With this release, a new utility named "acpihelp" has been added to the 4812 ACPICA 4813 package. This utility summarizes the ACPI specification chapters for the 4814 ASL 4815 and AML languages. It generates under Linux/Unix as well as Windows, and 4816 provides the following functionality: 4817 Find/display ASL operator(s) -- with description and syntax. 4818 Find/display ASL keyword(s) -- with exact spelling and descriptions. 4819 Find/display ACPI predefined name(s) -- with description, number 4820 of arguments, and the return value data type. 4821 Find/display AML opcode name(s) -- with opcode, arguments, and 4822 grammar. 4823 Decode/display AML opcode -- with opcode name, arguments, and 4824 grammar. 4825 4826 Service Layers: Make multi-thread support configurable. Conditionally 4827 compile 4828 the multi-thread support so that threading libraries will not be linked 4829 if 4830 not 4831 necessary. The only tool that requires multi-thread support is AcpiExec. 4832 4833 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions 4834 of 4835 Bison appear to want the interface to yyerror to be a const char * (or at 4836 least this is a problem when generating iASL on some systems.) ACPICA BZ 4837 923 4838 Pierre Lejeune. 4839 4840 Tools: Fix for systems where O_BINARY is not defined. Only used for 4841 Windows 4842 versions of the tools. 4843 4844 ---------------------------------------- 4845 27 May 2011. Summary of changes for version 20110527: 4846 4847 1) ACPI CA Core Subsystem: 4848 4849 ASL Load() operator: Reinstate most restrictions on the incoming ACPI 4850 table 4851 signature. Now, only allow SSDT, OEMx, and a null signature. History: 4852 1) Originally, we checked the table signature for "SSDT" or "PSDT". 4853 (PSDT is now obsolete.) 4854 2) We added support for OEMx tables, signature "OEM" plus a fourth 4855 "don't care" character. 4856 3) Valid tables were encountered with a null signature, so we just 4857 gave up on validating the signature, (05/2008). 4858 4) We encountered non-AML tables such as the MADT, which caused 4859 interpreter errors and kernel faults. So now, we once again allow 4860 only SSDT, OEMx, and now, also a null signature. (05/2011). 4861 4862 Added the missing _TDL predefined name to the global name list in order 4863 to 4864 enable validation. Affects both the core ACPICA code and the iASL 4865 compiler. 4866 4867 Example Code and Data Size: These are the sizes for the OS-independent 4868 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4869 debug 4870 version of the code includes the debug output trace mechanism and has a 4871 much 4872 larger code and data size. 4873 4874 Previous Release (VC 9.0): 4875 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 4876 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 4877 Current Release (VC 9.0): 4878 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 4879 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4880 4881 2) iASL Compiler/Disassembler and Tools: 4882 4883 Debugger/AcpiExec: Implemented support for "complex" method arguments on 4884 the 4885 debugger command line. This adds support beyond simple integers -- 4886 including 4887 Strings, Buffers, and Packages. Includes support for nested packages. 4888 Increased the default command line buffer size to accommodate these 4889 arguments. 4890 See the ACPICA reference for details and syntax. ACPICA BZ 917. 4891 4892 Debugger/AcpiExec: Implemented support for "default" method arguments for 4893 the 4894 Execute/Debug command. Now, the debugger will always invoke a control 4895 method 4896 with the required number of arguments -- even if the command line 4897 specifies 4898 none or insufficient arguments. It uses default integer values for any 4899 missing 4900 arguments. Also fixes a bug where only six method arguments maximum were 4901 supported instead of the required seven. 4902 4903 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine 4904 and 4905 also return status in order to prevent buffer overruns. See the ACPICA 4906 reference for details and syntax. ACPICA BZ 921 4907 4908 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 4909 makefiles to simplify support for the two different but similar parser 4910 generators, bison and yacc. 4911 4912 Updated the generic unix makefile for gcc 4. The default gcc version is 4913 now 4914 expected to be 4 or greater, since options specific to gcc 4 are used. 4915 4916 ---------------------------------------- 4917 13 April 2011. Summary of changes for version 20110413: 4918 4919 1) ACPI CA Core Subsystem: 4920 4921 Implemented support to execute a so-called "orphan" _REG method under the 4922 EC 4923 device. This change will force the execution of a _REG method underneath 4924 the 4925 EC 4926 device even if there is no corresponding operation region of type 4927 EmbeddedControl. Fixes a problem seen on some machines and apparently is 4928 compatible with Windows behavior. ACPICA BZ 875. 4929 4930 Added more predefined methods that are eligible for automatic NULL 4931 package 4932 element removal. This change adds another group of predefined names to 4933 the 4934 list 4935 of names that can be repaired by having NULL package elements dynamically 4936 removed. This group are those methods that return a single variable- 4937 length 4938 package containing simple data types such as integers, buffers, strings. 4939 This 4940 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, 4941 _PSL, 4942 _Sx, 4943 and _TZD. ACPICA BZ 914. 4944 4945 Split and segregated all internal global lock functions to a new file, 4946 evglock.c. 4947 4948 Updated internal address SpaceID for DataTable regions. Moved this 4949 internal 4950 space 4951 id in preparation for ACPI 5.0 changes that will include some new space 4952 IDs. 4953 This 4954 change should not affect user/host code. 4955 4956 Example Code and Data Size: These are the sizes for the OS-independent 4957 acpica.lib 4958 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 4959 version of 4960 the code includes the debug output trace mechanism and has a much larger 4961 code 4962 and 4963 data size. 4964 4965 Previous Release (VC 9.0): 4966 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 4967 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 4968 Current Release (VC 9.0): 4969 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 4970 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 4971 4972 2) iASL Compiler/Disassembler and Tools: 4973 4974 iASL/DTC: Major update for new grammar features. Allow generic data types 4975 in 4976 custom ACPI tables. Field names are now optional. Any line can be split 4977 to 4978 multiple lines using the continuation char (\). Large buffers now use 4979 line- 4980 continuation character(s) and no colon on the continuation lines. See the 4981 grammar 4982 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob 4983 Moore. 4984 4985 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return 4986 statements. 4987 Since the parser stuffs a "zero" as the return value for these statements 4988 (due 4989 to 4990 the underlying AML grammar), they were seen as "return with value" by the 4991 iASL 4992 semantic checking. They are now seen correctly as "null" return 4993 statements. 4994 4995 iASL: Check if a_REG declaration has a corresponding Operation Region. 4996 Adds a 4997 check for each _REG to ensure that there is in fact a corresponding 4998 operation 4999 region declaration in the same scope. If not, the _REG method is not very 5000 useful 5001 since it probably won't be executed. ACPICA BZ 915. 5002 5003 iASL/DTC: Finish support for expression evaluation. Added a new 5004 expression 5005 parser 5006 that implements c-style operator precedence and parenthesization. ACPICA 5007 bugzilla 5008 908. 5009 5010 Disassembler/DTC: Remove support for () and <> style comments in data 5011 tables. 5012 Now 5013 that DTC has full expression support, we don't want to have comment 5014 strings 5015 that 5016 start with a parentheses or a less-than symbol. Now, only the standard /* 5017 and 5018 // 5019 comments are supported, as well as the bracket [] comments. 5020 5021 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 5022 "unusual" 5023 headers in the acpidump file. Update the header validation to support 5024 these 5025 tables. Problem introduced in previous AcpiXtract version in the change 5026 to 5027 support "wrong checksum" error messages emitted by acpidump utility. 5028 5029 iASL: Add a * option to generate all template files (as a synonym for 5030 ALL) 5031 as 5032 in 5033 "iasl -T *" or "iasl -T ALL". 5034 5035 iASL/DTC: Do not abort compiler on fatal errors. We do not want to 5036 completely 5037 abort the compiler on "fatal" errors, simply should abort the current 5038 compile. 5039 This allows multiple compiles with a single (possibly wildcard) compiler 5040 invocation. 5041 5042 ---------------------------------------- 5043 16 March 2011. Summary of changes for version 20110316: 5044 5045 1) ACPI CA Core Subsystem: 5046 5047 Fixed a problem caused by a _PRW method appearing at the namespace root 5048 scope 5049 during the setup of wake GPEs. A fault could occur if a _PRW directly 5050 under 5051 the 5052 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 5053 5054 Implemented support for "spurious" Global Lock interrupts. On some 5055 systems, a 5056 global lock interrupt can occur without the pending flag being set. Upon 5057 a 5058 GL 5059 interrupt, we now ensure that a thread is actually waiting for the lock 5060 before 5061 signaling GL availability. Rafael Wysocki, Bob Moore. 5062 5063 Example Code and Data Size: These are the sizes for the OS-independent 5064 acpica.lib 5065 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 5066 version of 5067 the code includes the debug output trace mechanism and has a much larger 5068 code 5069 and 5070 data size. 5071 5072 Previous Release (VC 9.0): 5073 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 5074 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 5075 Current Release (VC 9.0): 5076 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 5077 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 5078 5079 2) iASL Compiler/Disassembler and Tools: 5080 5081 Implemented full support for the "SLIC" ACPI table. Includes support in 5082 the 5083 header files, disassembler, table compiler, and template generator. Bob 5084 Moore, 5085 Lin Ming. 5086 5087 AcpiXtract: Correctly handle embedded comments and messages from 5088 AcpiDump. 5089 Apparently some or all versions of acpidump will occasionally emit a 5090 comment 5091 like 5092 "Wrong checksum", etc., into the dump file. This was causing problems for 5093 AcpiXtract. ACPICA BZ 905. 5094 5095 iASL: Fix the Linux makefile by removing an inadvertent double file 5096 inclusion. 5097 ACPICA BZ 913. 5098 5099 AcpiExec: Update installation of operation region handlers. Install one 5100 handler 5101 for a user-defined address space. This is used by the ASL test suite 5102 (ASLTS). 5103 5104 ---------------------------------------- 5105 11 February 2011. Summary of changes for version 20110211: 5106 5107 1) ACPI CA Core Subsystem: 5108 5109 Added a mechanism to defer _REG methods for some early-installed 5110 handlers. 5111 Most user handlers should be installed before call to 5112 AcpiEnableSubsystem. 5113 However, Event handlers and region handlers should be installed after 5114 AcpiInitializeObjects. Override handlers for the "default" regions should 5115 be 5116 installed early, however. This change executes all _REG methods for the 5117 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 5118 chicken/egg issues between them. ACPICA BZ 848. 5119 5120 Implemented an optimization for GPE detection. This optimization will 5121 simply 5122 ignore GPE registers that contain no enabled GPEs -- there is no need to 5123 read the register since this information is available internally. This 5124 becomes more important on machines with a large GPE space. ACPICA 5125 bugzilla 5126 884. Lin Ming. Suggestion from Joe Liu. 5127 5128 Removed all use of the highly unreliable FADT revision field. The 5129 revision 5130 number in the FADT has been found to be completely unreliable and cannot 5131 be 5132 trusted. Only the actual table length can be used to infer the version. 5133 This 5134 change updates the ACPICA core and the disassembler so that both no 5135 longer 5136 even look at the FADT version and instead depend solely upon the FADT 5137 length. 5138 5139 Fix an unresolved name issue for the no-debug and no-error-message source 5140 generation cases. The _AcpiModuleName was left undefined in these cases, 5141 but 5142 it is actually needed as a parameter to some interfaces. Define 5143 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 5144 5145 Split several large files (makefiles and project files updated) 5146 utglobal.c -> utdecode.c 5147 dbcomds.c -> dbmethod.c dbnames.c 5148 dsopcode.c -> dsargs.c dscontrol.c 5149 dsload.c -> dsload2.c 5150 aslanalyze.c -> aslbtypes.c aslwalks.c 5151 5152 Example Code and Data Size: These are the sizes for the OS-independent 5153 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5154 debug version of the code includes the debug output trace mechanism and 5155 has 5156 a much larger code and data size. 5157 5158 Previous Release (VC 9.0): 5159 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 5160 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 5161 Current Release (VC 9.0): 5162 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 5163 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 5164 5165 2) iASL Compiler/Disassembler and Tools: 5166 5167 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 5168 These are useful C-style macros with the standard definitions. ACPICA 5169 bugzilla 898. 5170 5171 iASL/DTC: Added support for integer expressions and labels. Support for 5172 full 5173 expressions for all integer fields in all ACPI tables. Support for labels 5174 in 5175 "generic" portions of tables such as UEFI. See the iASL reference manual. 5176 5177 Debugger: Added a command to display the status of global handlers. The 5178 "handlers" command will display op region, fixed event, and miscellaneous 5179 global handlers. installation status -- and for op regions, whether 5180 default 5181 or user-installed handler will be used. 5182 5183 iASL: Warn if reserved method incorrectly returns a value. Many 5184 predefined 5185 names are defined such that they do not return a value. If implemented as 5186 a 5187 method, issue a warning if such a name explicitly returns a value. ACPICA 5188 Bugzilla 855. 5189 5190 iASL: Added detection of GPE method name conflicts. Detects a conflict 5191 where 5192 there are two GPE methods of the form _Lxy and _Exy in the same scope. 5193 (For 5194 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 5195 5196 iASL/DTC: Fixed a couple input scanner issues with comments and line 5197 numbers. Comment remover could get confused and miss a comment ending. 5198 Fixed 5199 a problem with line counter maintenance. 5200 5201 iASL/DTC: Reduced the severity of some errors from fatal to error. There 5202 is 5203 no need to abort on simple errors within a field definition. 5204 5205 Debugger: Simplified the output of the help command. All help output now 5206 in 5207 a single screen, instead of help subcommands. ACPICA Bugzilla 897. 5208 5209 ---------------------------------------- 5210 12 January 2011. Summary of changes for version 20110112: 5211 5212 1) ACPI CA Core Subsystem: 5213 5214 Fixed a race condition between method execution and namespace walks that 5215 can 5216 possibly cause a fault. The problem was apparently introduced in version 5217 20100528 as a result of a performance optimization that reduces the 5218 number 5219 of 5220 namespace walks upon method exit by using the delete_namespace_subtree 5221 function instead of the delete_namespace_by_owner function used 5222 previously. 5223 Bug is a missing namespace lock in the delete_namespace_subtree function. 5224 dana.myers (a] oracle.com 5225 5226 Fixed several issues and a possible fault with the automatic "serialized" 5227 method support. History: This support changes a method to "serialized" on 5228 the 5229 fly if the method generates an AE_ALREADY_EXISTS error, indicating the 5230 possibility that it cannot handle reentrancy. This fix repairs a couple 5231 of 5232 issues seen in the field, especially on machines with many cores: 5233 5234 1) Delete method children only upon the exit of the last thread, 5235 so as to not delete objects out from under other running threads 5236 (and possibly causing a fault.) 5237 2) Set the "serialized" bit for the method only upon the exit of the 5238 Last thread, so as to not cause deadlock when running threads 5239 attempt to exit. 5240 3) Cleanup the use of the AML "MethodFlags" and internal method flags 5241 so that there is no longer any confusion between the two. 5242 5243 Lin Ming, Bob Moore. Reported by dana.myers (a] oracle.com. 5244 5245 Debugger: Now lock the namespace for duration of a namespace dump. 5246 Prevents 5247 issues if the namespace is changing dynamically underneath the debugger. 5248 Especially affects temporary namespace nodes, since the debugger displays 5249 these also. 5250 5251 Updated the ordering of include files. The ACPICA headers should appear 5252 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can 5253 set 5254 any necessary compiler-specific defines, etc. Affects the ACPI-related 5255 tools 5256 and utilities. 5257 5258 Updated all ACPICA copyrights and signons to 2011. Added the 2011 5259 copyright 5260 to all module headers and signons, including the Linux header. This 5261 affects 5262 virtually every file in the ACPICA core subsystem, iASL compiler, and all 5263 utilities. 5264 5265 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 5266 project files for VC++ 6.0 are now obsolete. New project files can be 5267 found 5268 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 5269 details. 5270 5271 Example Code and Data Size: These are the sizes for the OS-independent 5272 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5273 debug version of the code includes the debug output trace mechanism and 5274 has a 5275 much larger code and data size. 5276 5277 Previous Release (VC 6.0): 5278 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 5279 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 5280 Current Release (VC 9.0): 5281 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 5282 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 5283 5284 2) iASL Compiler/Disassembler and Tools: 5285 5286 iASL: Added generic data types to the Data Table compiler. Add "generic" 5287 data 5288 types such as UINT32, String, Unicode, etc., to simplify the generation 5289 of 5290 platform-defined tables such as UEFI. Lin Ming. 5291 5292 iASL: Added listing support for the Data Table Compiler. Adds listing 5293 support 5294 (-l) to display actual binary output for each line of input code. 5295 5296 ---------------------------------------- 5297 09 December 2010. Summary of changes for version 20101209: 5298 5299 1) ACPI CA Core Subsystem: 5300 5301 Completed the major overhaul of the GPE support code that was begun in 5302 July 5303 2010. Major features include: removal of _PRW execution in ACPICA (host 5304 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 5305 changes to existing interfaces, simplification of GPE handler operation, 5306 and 5307 a handful of new interfaces: 5308 5309 AcpiUpdateAllGpes 5310 AcpiFinishGpe 5311 AcpiSetupGpeForWake 5312 AcpiSetGpeWakeMask 5313 One new file, evxfgpe.c to consolidate all external GPE interfaces. 5314 5315 See the ACPICA Programmer Reference for full details and programming 5316 information. See the new section 4.4 "General Purpose Event (GPE) 5317 Support" 5318 for a full overview, and section 8.7 "ACPI General Purpose Event 5319 Management" 5320 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin 5321 Ming, 5322 Bob Moore, Rafael Wysocki. 5323 5324 Implemented a new GPE feature for Windows compatibility, the "Implicit 5325 Wake 5326 GPE Notify". This feature will automatically issue a Notify(2) on a 5327 device 5328 when a Wake GPE is received if there is no corresponding GPE method or 5329 handler. ACPICA BZ 870. 5330 5331 Fixed a problem with the Scope() operator during table parse and load 5332 phase. 5333 During load phase (table load or method execution), the scope operator 5334 should 5335 not enter the target into the namespace. Instead, it should open a new 5336 scope 5337 at the target location. Linux BZ 19462, ACPICA BZ 882. 5338 5339 Example Code and Data Size: These are the sizes for the OS-independent 5340 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5341 debug version of the code includes the debug output trace mechanism and 5342 has a 5343 much larger code and data size. 5344 5345 Previous Release: 5346 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 5347 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 5348 Current Release: 5349 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 5350 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 5351 5352 2) iASL Compiler/Disassembler and Tools: 5353 5354 iASL: Relax the alphanumeric restriction on _CID strings. These strings 5355 are 5356 "bus-specific" per the ACPI specification, and therefore any characters 5357 are 5358 acceptable. The only checks that can be performed are for a null string 5359 and 5360 perhaps for a leading asterisk. ACPICA BZ 886. 5361 5362 iASL: Fixed a problem where a syntax error that caused a premature EOF 5363 condition on the source file emitted a very confusing error message. The 5364 premature EOF is now detected correctly. ACPICA BZ 891. 5365 5366 Disassembler: Decode the AccessSize within a Generic Address Structure 5367 (byte 5368 access, word access, etc.) Note, this field does not allow arbitrary bit 5369 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 5370 5371 New: AcpiNames utility - Example namespace dump utility. Shows an example 5372 of 5373 ACPICA configuration for a minimal namespace dump utility. Uses table and 5374 namespace managers, but no AML interpreter. Does not add any 5375 functionality 5376 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 5377 partition and configure ACPICA. ACPICA BZ 883. 5378 5379 AML Debugger: Increased the debugger buffer size for method return 5380 objects. 5381 Was 4K, increased to 16K. Also enhanced error messages for debugger 5382 method 5383 execution, including the buffer overflow case. 5384 5385 ---------------------------------------- 5386 13 October 2010. Summary of changes for version 20101013: 5387 5388 1) ACPI CA Core Subsystem: 5389 5390 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, 5391 now 5392 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 5393 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 5394 5395 Changed the type of the predefined namespace object _TZ from ThermalZone 5396 to 5397 Device. This was found to be confusing to the host software that 5398 processes 5399 the various thermal zones, since _TZ is not really a ThermalZone. 5400 However, 5401 a 5402 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 5403 Zhang. 5404 5405 Added Windows Vista SP2 to the list of supported _OSI strings. The actual 5406 string is "Windows 2006 SP2". 5407 5408 Eliminated duplicate code in AcpiUtExecute* functions. Now that the 5409 nsrepair 5410 code automatically repairs _HID-related strings, this type of code is no 5411 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 5412 878. 5413 5414 Example Code and Data Size: These are the sizes for the OS-independent 5415 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5416 debug version of the code includes the debug output trace mechanism and 5417 has a 5418 much larger code and data size. 5419 5420 Previous Release: 5421 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 5422 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 5423 Current Release: 5424 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 5425 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 5426 5427 2) iASL Compiler/Disassembler and Tools: 5428 5429 iASL: Implemented additional compile-time validation for _HID strings. 5430 The 5431 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the 5432 length 5433 of 5434 the string must be exactly seven or eight characters. For both _HID and 5435 _CID 5436 strings, all characters must be alphanumeric. ACPICA BZ 874. 5437 5438 iASL: Allow certain "null" resource descriptors. Some BIOS code creates 5439 descriptors that are mostly or all zeros, with the expectation that they 5440 will 5441 be filled in at runtime. iASL now allows this as long as there is a 5442 "resource 5443 tag" (name) associated with the descriptor, which gives the ASL a handle 5444 needed to modify the descriptor. ACPICA BZ 873. 5445 5446 Added single-thread support to the generic Unix application OSL. 5447 Primarily 5448 for iASL support, this change removes the use of semaphores in the 5449 single- 5450 threaded ACPICA tools/applications - increasing performance. The 5451 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 5452 option. ACPICA BZ 879. 5453 5454 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and 5455 support 5456 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 5457 5458 iASL: Moved all compiler messages to a new file, aslmessages.h. 5459 5460 ---------------------------------------- 5461 15 September 2010. Summary of changes for version 20100915: 5462 5463 1) ACPI CA Core Subsystem: 5464 5465 Removed the AcpiOsDerivePciId OSL interface. The various host 5466 implementations 5467 of this function were not OS-dependent and are now obsolete and can be 5468 removed from all host OSLs. This function has been replaced by 5469 AcpiHwDerivePciId, which is now part of the ACPICA core code. 5470 AcpiHwDerivePciId has been implemented without recursion. Adds one new 5471 module, hwpci.c. ACPICA BZ 857. 5472 5473 Implemented a dynamic repair for _HID and _CID strings. The following 5474 problems are now repaired at runtime: 1) Remove a leading asterisk in the 5475 string, and 2) the entire string is uppercased. Both repairs are in 5476 accordance with the ACPI specification and will simplify host driver 5477 code. 5478 ACPICA BZ 871. 5479 5480 The ACPI_THREAD_ID type is no longer configurable, internally it is now 5481 always UINT64. This simplifies the ACPICA code, especially any printf 5482 output. 5483 UINT64 is the only common data type for all thread_id types across all 5484 operating systems. It is now up to the host OSL to cast the native 5485 thread_id 5486 type to UINT64 before returning the value to ACPICA (via 5487 AcpiOsGetThreadId). 5488 Lin Ming, Bob Moore. 5489 5490 Added the ACPI_INLINE type to enhance the ACPICA configuration. The 5491 "inline" 5492 keyword is not standard across compilers, and this type allows inline to 5493 be 5494 configured on a per-compiler basis. Lin Ming. 5495 5496 Made the system global AcpiGbl_SystemAwakeAndRunning publically 5497 available. 5498 Added an extern for this boolean in acpixf.h. Some hosts utilize this 5499 value 5500 during suspend/restore operations. ACPICA BZ 869. 5501 5502 All code that implements error/warning messages with the "ACPI:" prefix 5503 has 5504 been moved to a new module, utxferror.c. 5505 5506 The UINT64_OVERLAY was moved to utmath.c, which is the only module where 5507 it 5508 is used. ACPICA BZ 829. Lin Ming, Bob Moore. 5509 5510 Example Code and Data Size: These are the sizes for the OS-independent 5511 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5512 debug version of the code includes the debug output trace mechanism and 5513 has a 5514 much larger code and data size. 5515 5516 Previous Release: 5517 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 5518 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 5519 Current Release: 5520 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 5521 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 5522 5523 2) iASL Compiler/Disassembler and Tools: 5524 5525 iASL/Disassembler: Write ACPI errors to stderr instead of the output 5526 file. 5527 This keeps the output files free of random error messages that may 5528 originate 5529 from within the namespace/interpreter code. Used this opportunity to 5530 merge 5531 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 5532 866. Lin Ming, Bob Moore. 5533 5534 Tools: update some printfs for ansi warnings on size_t. Handle width 5535 change 5536 of size_t on 32-bit versus 64-bit generations. Lin Ming. 5537 5538 ---------------------------------------- 5539 06 August 2010. Summary of changes for version 20100806: 5540 5541 1) ACPI CA Core Subsystem: 5542 5543 Designed and implemented a new host interface to the _OSI support code. 5544 This 5545 will allow the host to dynamically add or remove multiple _OSI strings, 5546 as 5547 well as install an optional handler that is called for each _OSI 5548 invocation. 5549 Also added a new AML debugger command, 'osi' to display and modify the 5550 global 5551 _OSI string table, and test support in the AcpiExec utility. See the 5552 ACPICA 5553 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 5554 New Functions: 5555 AcpiInstallInterface - Add an _OSI string. 5556 AcpiRemoveInterface - Delete an _OSI string. 5557 AcpiInstallInterfaceHandler - Install optional _OSI handler. 5558 Obsolete Functions: 5559 AcpiOsValidateInterface - no longer used. 5560 New Files: 5561 source/components/utilities/utosi.c 5562 5563 Re-introduced the support to enable multi-byte transfers for Embedded 5564 Controller (EC) operation regions. A reported problem was found to be a 5565 bug 5566 in the host OS, not in the multi-byte support. Previously, the maximum 5567 data 5568 size passed to the EC operation region handler was a single byte. There 5569 are 5570 often EC Fields larger than one byte that need to be transferred, and it 5571 is 5572 useful for the EC driver to lock these as a single transaction. This 5573 change 5574 enables single transfers larger than 8 bits. This effectively changes the 5575 access to the EC space from ByteAcc to AnyAcc, and will probably require 5576 changes to the host OS Embedded Controller driver to enable 16/32/64/256- 5577 bit 5578 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 5579 5580 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 5581 prototype in acpiosxf.h had the output value pointer as a (void *). 5582 It should be a (UINT64 *). This may affect some host OSL code. 5583 5584 Fixed a couple problems with the recently modified Linux makefiles for 5585 iASL 5586 and AcpiExec. These new makefiles place the generated object files in the 5587 local directory so that there can be no collisions between the files that 5588 are 5589 shared between them that are compiled with different options. 5590 5591 Example Code and Data Size: These are the sizes for the OS-independent 5592 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5593 debug version of the code includes the debug output trace mechanism and 5594 has a 5595 much larger code and data size. 5596 5597 Previous Release: 5598 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 5599 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 5600 Current Release: 5601 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 5602 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 5603 5604 2) iASL Compiler/Disassembler and Tools: 5605 5606 iASL/Disassembler: Added a new option (-da, "disassemble all") to load 5607 the 5608 namespace from and disassemble an entire group of AML files. Useful for 5609 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) 5610 and 5611 disassembling with one simple command. ACPICA BZ 865. Lin Ming. 5612 5613 iASL: Allow multiple invocations of -e option. This change allows 5614 multiple 5615 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 5616 834. 5617 Lin Ming. 5618 5619 ---------------------------------------- 5620 02 July 2010. Summary of changes for version 20100702: 5621 5622 1) ACPI CA Core Subsystem: 5623 5624 Implemented several updates to the recently added GPE reference count 5625 support. The model for "wake" GPEs is changing to give the host OS 5626 complete 5627 control of these GPEs. Eventually, the ACPICA core will not execute any 5628 _PRW 5629 methods, since the host already must execute them. Also, additional 5630 changes 5631 were made to help ensure that the reference counts are kept in proper 5632 synchronization with reality. Rafael J. Wysocki. 5633 5634 1) Ensure that GPEs are not enabled twice during initialization. 5635 2) Ensure that GPE enable masks stay in sync with the reference count. 5636 3) Do not inadvertently enable GPEs when writing GPE registers. 5637 4) Remove the internal wake reference counter and add new AcpiGpeWakeup 5638 interface. This interface will set or clear individual GPEs for wakeup. 5639 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These 5640 interfaces 5641 are now used for "runtime" GPEs only. 5642 5643 Changed the behavior of the GPE install/remove handler interfaces. The 5644 GPE 5645 is 5646 no longer disabled during this process, as it was found to cause problems 5647 on 5648 some machines. Rafael J. Wysocki. 5649 5650 Reverted a change introduced in version 20100528 to enable Embedded 5651 Controller multi-byte transfers. This change was found to cause problems 5652 with 5653 Index Fields and possibly Bank Fields. It will be reintroduced when these 5654 problems have been resolved. 5655 5656 Fixed a problem with references to Alias objects within Package Objects. 5657 A 5658 reference to an Alias within the definition of a Package was not always 5659 resolved properly. Aliases to objects like Processors, Thermal zones, 5660 etc. 5661 were resolved to the actual object instead of a reference to the object 5662 as 5663 it 5664 should be. Package objects are only allowed to contain integer, string, 5665 buffer, package, and reference objects. Redhat bugzilla 608648. 5666 5667 Example Code and Data Size: These are the sizes for the OS-independent 5668 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5669 debug version of the code includes the debug output trace mechanism and 5670 has a 5671 much larger code and data size. 5672 5673 Previous Release: 5674 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 5675 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 5676 Current Release: 5677 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 5678 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 5679 5680 2) iASL Compiler/Disassembler and Tools: 5681 5682 iASL: Implemented a new compiler subsystem to allow definition and 5683 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. 5684 These 5685 are called "ACPI Data Tables", and the new compiler is the "Data Table 5686 Compiler". This compiler is intended to simplify the existing error-prone 5687 process of creating these tables for the BIOS, as well as allowing the 5688 disassembly, modification, recompilation, and override of existing ACPI 5689 data 5690 tables. See the iASL User Guide for detailed information. 5691 5692 iASL: Implemented a new Template Generator option in support of the new 5693 Data 5694 Table Compiler. This option will create examples of all known ACPI tables 5695 that can be used as the basis for table development. See the iASL 5696 documentation and the -T option. 5697 5698 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 5699 Descriptor Table). 5700 5701 Updated the Linux makefiles for iASL and AcpiExec to place the generated 5702 object files in the local directory so that there can be no collisions 5703 between the shared files between them that are generated with different 5704 options. 5705 5706 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. 5707 Use 5708 the #define __APPLE__ to enable this support. 5709 5710 ---------------------------------------- 5711 28 May 2010. Summary of changes for version 20100528: 5712 5713 Note: The ACPI 4.0a specification was released on April 5, 2010 and is 5714 available at www.acpi.info. This is primarily an errata release. 5715 5716 1) ACPI CA Core Subsystem: 5717 5718 Undefined ACPI tables: We are looking for the definitions for the 5719 following 5720 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 5721 5722 Implemented support to enable multi-byte transfers for Embedded 5723 Controller 5724 (EC) operation regions. Previously, the maximum data size passed to the 5725 EC 5726 operation region handler was a single byte. There are often EC Fields 5727 larger 5728 than one byte that need to be transferred, and it is useful for the EC 5729 driver 5730 to lock these as a single transaction. This change enables single 5731 transfers 5732 larger than 8 bits. This effectively changes the access to the EC space 5733 from 5734 ByteAcc to AnyAcc, and will probably require changes to the host OS 5735 Embedded 5736 Controller driver to enable 16/32/64/256-bit transfers in addition to 8- 5737 bit 5738 transfers. Alexey Starikovskiy, Lin Ming 5739 5740 Implemented a performance enhancement for namespace search and access. 5741 This 5742 change enhances the performance of namespace searches and walks by adding 5743 a 5744 backpointer to the parent in each namespace node. On large namespaces, 5745 this 5746 change can improve overall ACPI performance by up to 9X. Adding a pointer 5747 to 5748 each namespace node increases the overall size of the internal namespace 5749 by 5750 about 5%, since each namespace entry usually consists of both a namespace 5751 node and an ACPI operand object. However, this is the first growth of the 5752 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 5753 5754 Implemented a performance optimization that reduces the number of 5755 namespace 5756 walks. On control method exit, only walk the namespace if the method is 5757 known 5758 to have created namespace objects outside of its local scope. Previously, 5759 the 5760 entire namespace was traversed on each control method exit. This change 5761 can 5762 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob 5763 Moore. 5764 5765 Added support to truncate I/O addresses to 16 bits for Windows 5766 compatibility. 5767 Some ASL code has been seen in the field that inadvertently has bits set 5768 above bit 15. This feature is optional and is enabled if the BIOS 5769 requests 5770 any Windows OSI strings. It can also be enabled by the host OS. Matthew 5771 Garrett, Bob Moore. 5772 5773 Added support to limit the maximum time for the ASL Sleep() operator. To 5774 prevent accidental deep sleeps, limit the maximum time that Sleep() will 5775 actually sleep. Configurable, the default maximum is two seconds. ACPICA 5776 bugzilla 854. 5777 5778 Added run-time validation support for the _WDG and_WED Microsoft 5779 predefined 5780 methods. These objects are defined by "Windows Instrumentation", and are 5781 not 5782 part of the ACPI spec. ACPICA BZ 860. 5783 5784 Expanded all statistic counters used during namespace and device 5785 initialization from 16 to 32 bits in order to support very large 5786 namespaces. 5787 5788 Replaced all instances of %d in printf format specifiers with %u since 5789 nearly 5790 all integers in ACPICA are unsigned. 5791 5792 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly 5793 returned 5794 as AE_NO_HANDLER. 5795 5796 Example Code and Data Size: These are the sizes for the OS-independent 5797 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5798 debug version of the code includes the debug output trace mechanism and 5799 has a 5800 much larger code and data size. 5801 5802 Previous Release: 5803 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 5804 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 5805 Current Release: 5806 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 5807 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 5808 5809 2) iASL Compiler/Disassembler and Tools: 5810 5811 iASL: Added compiler support for the _WDG and_WED Microsoft predefined 5812 methods. These objects are defined by "Windows Instrumentation", and are 5813 not 5814 part of the ACPI spec. ACPICA BZ 860. 5815 5816 AcpiExec: added option to disable the memory tracking mechanism. The -dt 5817 option will disable the tracking mechanism, which improves performance 5818 considerably. 5819 5820 AcpiExec: Restructured the command line options into -d (disable) and -e 5821 (enable) options. 5822 5823 ---------------------------------------- 5824 28 April 2010. Summary of changes for version 20100428: 5825 5826 1) ACPI CA Core Subsystem: 5827 5828 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 5829 including FADT-based and GPE Block Devices, execute any _PRW methods in 5830 the 5831 new table, and process any _Lxx/_Exx GPE methods in the new table. Any 5832 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 5833 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 5834 Devices. Provides compatibility with other ACPI implementations. Two new 5835 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob 5836 Moore. 5837 5838 Fixed a regression introduced in version 20100331 within the table 5839 manager 5840 where initial table loading could fail. This was introduced in the fix 5841 for 5842 AcpiReallocateRootTable. Also, renamed some of fields in the table 5843 manager 5844 data structures to clarify their meaning and use. 5845 5846 Fixed a possible allocation overrun during internal object copy in 5847 AcpiUtCopySimpleObject. The original code did not correctly handle the 5848 case 5849 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 5850 847. 5851 5852 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 5853 possible access beyond end-of-allocation. Also, now fully validate 5854 descriptor 5855 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 5856 5857 Example Code and Data Size: These are the sizes for the OS-independent 5858 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5859 debug version of the code includes the debug output trace mechanism and 5860 has a 5861 much larger code and data size. 5862 5863 Previous Release: 5864 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 5865 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 5866 Current Release: 5867 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 5868 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 5869 5870 2) iASL Compiler/Disassembler and Tools: 5871 5872 iASL: Implemented Min/Max/Len/Gran validation for address resource 5873 descriptors. This change implements validation for the address fields 5874 that 5875 are common to all address-type resource descriptors. These checks are 5876 implemented: Checks for valid Min/Max, length within the Min/Max window, 5877 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as 5878 per 5879 table 6-40 in the ACPI 4.0a specification. Also split the large 5880 aslrestype1.c 5881 and aslrestype2.c files into five new files. ACPICA BZ 840. 5882 5883 iASL: Added support for the _Wxx predefined names. This support was 5884 missing 5885 and these names were not recognized by the compiler as valid predefined 5886 names. ACPICA BZ 851. 5887 5888 iASL: Added an error for all predefined names that are defined to return 5889 no 5890 value and thus must be implemented as Control Methods. These include all 5891 of 5892 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 5893 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 5894 5895 iASL: Implemented the -ts option to emit hex AML data in ASL format, as 5896 an 5897 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to 5898 be 5899 dynamically loaded via the Load() operator. Also cleaned up output for 5900 the 5901 - 5902 ta and -tc options. ACPICA BZ 853. 5903 5904 Tests: Added a new file with examples of extended iASL error checking. 5905 Demonstrates the advanced error checking ability of the iASL compiler. 5906 Available at tests/misc/badcode.asl. 5907 5908 ---------------------------------------- 5909 31 March 2010. Summary of changes for version 20100331: 5910 5911 1) ACPI CA Core Subsystem: 5912 5913 Completed a major update for the GPE support in order to improve support 5914 for 5915 shared GPEs and to simplify both host OS and ACPICA code. Added a 5916 reference 5917 count mechanism to support shared GPEs that require multiple device 5918 drivers. 5919 Several external interfaces have changed. One external interface has been 5920 removed. One new external interface was added. Most of the GPE external 5921 interfaces now use the GPE spinlock instead of the events mutex (and the 5922 Flags parameter for many GPE interfaces has been removed.) See the 5923 updated 5924 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, 5925 Rafael 5926 Wysocki. ACPICA BZ 831. 5927 5928 Changed: 5929 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 5930 Removed: 5931 AcpiSetGpeType 5932 New: 5933 AcpiSetGpe 5934 5935 Implemented write support for DataTable operation regions. These regions 5936 are 5937 defined via the DataTableRegion() operator. Previously, only read support 5938 was 5939 implemented. The ACPI specification allows DataTableRegions to be 5940 read/write, 5941 however. 5942 5943 Implemented a new subsystem option to force a copy of the DSDT to local 5944 memory. Optionally copy the entire DSDT to local memory (instead of 5945 simply 5946 mapping it.) There are some (albeit very rare) BIOSs that corrupt or 5947 replace 5948 the original DSDT, creating the need for this option. Default is FALSE, 5949 do 5950 not copy the DSDT. 5951 5952 Implemented detection of a corrupted or replaced DSDT. This change adds 5953 support to detect a DSDT that has been corrupted and/or replaced from 5954 outside 5955 the OS (by firmware). This is typically catastrophic for the system, but 5956 has 5957 been seen on some machines. Once this problem has been detected, the DSDT 5958 copy option can be enabled via system configuration. Lin Ming, Bob Moore. 5959 5960 Fixed two problems with AcpiReallocateRootTable during the root table 5961 copy. 5962 When copying the root table to the new allocation, the length used was 5963 incorrect. The new size was used instead of the current table size, 5964 meaning 5965 too much data was copied. Also, the count of available slots for ACPI 5966 tables 5967 was not set correctly. Alexey Starikovskiy, Bob Moore. 5968 5969 Example Code and Data Size: These are the sizes for the OS-independent 5970 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5971 debug version of the code includes the debug output trace mechanism and 5972 has a 5973 much larger code and data size. 5974 5975 Previous Release: 5976 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 5977 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 5978 Current Release: 5979 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 5980 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 5981 5982 2) iASL Compiler/Disassembler and Tools: 5983 5984 iASL: Implement limited typechecking for values returned from predefined 5985 control methods. The type of any returned static (unnamed) object is now 5986 validated. For example, Return(1). ACPICA BZ 786. 5987 5988 iASL: Fixed a predefined name object verification regression. Fixes a 5989 problem 5990 introduced in version 20100304. An error is incorrectly generated if a 5991 predefined name is declared as a static named object with a value defined 5992 using the keywords "Zero", "One", or "Ones". Lin Ming. 5993 5994 iASL: Added Windows 7 support for the -g option (get local ACPI tables) 5995 by 5996 reducing the requested registry access rights. ACPICA BZ 842. 5997 5998 Disassembler: fixed a possible fault when generating External() 5999 statements. 6000 Introduced in commit ae7d6fd: Properly handle externals with parent- 6001 prefix 6002 (carat). Fixes a string length allocation calculation. Lin Ming. 6003 6004 ---------------------------------------- 6005 04 March 2010. Summary of changes for version 20100304: 6006 6007 1) ACPI CA Core Subsystem: 6008 6009 Fixed a possible problem with the AML Mutex handling function 6010 AcpiExReleaseMutex where the function could fault under the very rare 6011 condition when the interpreter has blocked, the interpreter lock is 6012 released, 6013 the interpreter is then reentered via the same thread, and attempts to 6014 acquire an AML mutex that was previously acquired. FreeBSD report 140979. 6015 Lin 6016 Ming. 6017 6018 Implemented additional configuration support for the AML "Debug Object". 6019 Output from the debug object can now be enabled via a global variable, 6020 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine 6021 debugging. 6022 This debug output is now available in the release version of ACPICA 6023 instead 6024 of just the debug version. Also, the entire debug output module can now 6025 be 6026 configured out of the ACPICA build if desired. One new file added, 6027 executer/exdebug.c. Lin Ming, Bob Moore. 6028 6029 Added header support for the ACPI MCHI table (Management Controller Host 6030 Interface Table). This table was added in ACPI 4.0, but the defining 6031 document 6032 has only recently become available. 6033 6034 Standardized output of integer values for ACPICA warnings/errors. Always 6035 use 6036 0x prefix for hex output, always use %u for unsigned integer decimal 6037 output. 6038 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 6039 400 6040 invocations.) These invocations were converted from the original 6041 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 6042 6043 Example Code and Data Size: These are the sizes for the OS-independent 6044 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6045 debug version of the code includes the debug output trace mechanism and 6046 has a 6047 much larger code and data size. 6048 6049 Previous Release: 6050 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 6051 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 6052 Current Release: 6053 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 6054 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 6055 6056 2) iASL Compiler/Disassembler and Tools: 6057 6058 iASL: Implemented typechecking support for static (non-control method) 6059 predefined named objects that are declared with the Name() operator. For 6060 example, the type of this object is now validated to be of type Integer: 6061 Name(_BBN, 1). This change migrates the compiler to using the core 6062 predefined 6063 name table instead of maintaining a local version. Added a new file, 6064 aslpredef.c. ACPICA BZ 832. 6065 6066 Disassembler: Added support for the ACPI 4.0 MCHI table. 6067 6068 ---------------------------------------- 6069 21 January 2010. Summary of changes for version 20100121: 6070 6071 1) ACPI CA Core Subsystem: 6072 6073 Added the 2010 copyright to all module headers and signons. This affects 6074 virtually every file in the ACPICA core subsystem, the iASL compiler, the 6075 tools/utilities, and the test suites. 6076 6077 Implemented a change to the AcpiGetDevices interface to eliminate 6078 unnecessary 6079 invocations of the _STA method. In the case where a specific _HID is 6080 requested, do not run _STA until a _HID match is found. This eliminates 6081 potentially dozens of _STA calls during a search for a particular 6082 device/HID, 6083 which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 6084 6085 Implemented an additional repair for predefined method return values. 6086 Attempt 6087 to repair unexpected NULL elements within returned Package objects. 6088 Create 6089 an 6090 Integer of value zero, a NULL String, or a zero-length Buffer as 6091 appropriate. 6092 ACPICA BZ 818. Lin Ming, Bob Moore. 6093 6094 Removed the obsolete ACPI_INTEGER data type. This type was introduced as 6095 the 6096 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 6097 (with 6098 64-bit AML integers). It is now obsolete and this change removes it from 6099 the 6100 ACPICA code base, replaced by UINT64. The original typedef has been 6101 retained 6102 for now for compatibility with existing device driver code. ACPICA BZ 6103 824. 6104 6105 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field 6106 in 6107 the parse tree object. 6108 6109 Added additional warning options for the gcc-4 generation. Updated the 6110 source 6111 accordingly. This includes some code restructuring to eliminate 6112 unreachable 6113 code, elimination of some gotos, elimination of unused return values, 6114 some 6115 additional casting, and removal of redundant declarations. 6116 6117 Example Code and Data Size: These are the sizes for the OS-independent 6118 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6119 debug version of the code includes the debug output trace mechanism and 6120 has a 6121 much larger code and data size. 6122 6123 Previous Release: 6124 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 6125 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 6126 Current Release: 6127 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 6128 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 6129 6130 2) iASL Compiler/Disassembler and Tools: 6131 6132 No functional changes for this release. 6133 6134 ---------------------------------------- 6135 14 December 2009. Summary of changes for version 20091214: 6136 6137 1) ACPI CA Core Subsystem: 6138 6139 Enhanced automatic data type conversions for predefined name repairs. 6140 This 6141 change expands the automatic repairs/conversions for predefined name 6142 return 6143 values to make Integers, Strings, and Buffers fully interchangeable. 6144 Also, 6145 a 6146 Buffer can be converted to a Package of Integers if necessary. The 6147 nsrepair.c 6148 module was completely restructured. Lin Ming, Bob Moore. 6149 6150 Implemented automatic removal of null package elements during predefined 6151 name 6152 repairs. This change will automatically remove embedded and trailing NULL 6153 package elements from returned package objects that are defined to 6154 contain 6155 a 6156 variable number of sub-packages. The driver is then presented with a 6157 package 6158 with no null elements to deal with. ACPICA BZ 819. 6159 6160 Implemented a repair for the predefined _FDE and _GTM names. The expected 6161 return value for both names is a Buffer of 5 DWORDs. This repair fixes 6162 two 6163 possible problems (both seen in the field), where a package of integers 6164 is 6165 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk 6166 Kim. 6167 6168 Implemented additional module-level code support. This change will 6169 properly 6170 execute module-level code that is not at the root of the namespace (under 6171 a 6172 Device object, etc.). Now executes the code within the current scope 6173 instead 6174 of the root. ACPICA BZ 762. Lin Ming. 6175 6176 Fixed possible mutex acquisition errors when running _REG methods. Fixes 6177 a 6178 problem where mutex errors can occur when running a _REG method that is 6179 in 6180 the same scope as a method-defined operation region or an operation 6181 region 6182 under a module-level IF block. This type of code is rare, so the problem 6183 has 6184 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 6185 6186 Fixed a possible memory leak during module-level code execution. An 6187 object 6188 could be leaked for each block of executed module-level code if the 6189 interpreter slack mode is enabled This change deletes any implicitly 6190 returned 6191 object from the module-level code block. Lin Ming. 6192 6193 Removed messages for successful predefined repair(s). The repair 6194 mechanism 6195 was considered too wordy. Now, messages are only unconditionally emitted 6196 if 6197 the return object cannot be repaired. Existing messages for successful 6198 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 6199 827. 6200 6201 Example Code and Data Size: These are the sizes for the OS-independent 6202 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6203 debug version of the code includes the debug output trace mechanism and 6204 has a 6205 much larger code and data size. 6206 6207 Previous Release: 6208 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 6209 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 6210 Current Release: 6211 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 6212 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 6213 6214 2) iASL Compiler/Disassembler and Tools: 6215 6216 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC 6217 files 6218 were no longer automatically removed at the termination of the compile. 6219 6220 acpiexec: Implemented the -f option to specify default region fill value. 6221 This option specifies the value used to initialize buffers that simulate 6222 operation regions. Default value is zero. Useful for debugging problems 6223 that 6224 depend on a specific initial value for a region or field. 6225 6226 ---------------------------------------- 6227 12 November 2009. Summary of changes for version 20091112: 6228 6229 1) ACPI CA Core Subsystem: 6230 6231 Implemented a post-order callback to AcpiWalkNamespace. The existing 6232 interface only has a pre-order callback. This change adds an additional 6233 parameter for a post-order callback which will be more useful for bus 6234 scans. 6235 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 6236 6237 Modified the behavior of the operation region memory mapping cache for 6238 SystemMemory. Ensure that the memory mappings created for operation 6239 regions 6240 do not cross 4K page boundaries. Crossing a page boundary while mapping 6241 regions can cause kernel warnings on some hosts if the pages have 6242 different 6243 attributes. Such regions are probably BIOS bugs, and this is the 6244 workaround. 6245 Linux BZ 14445. Lin Ming. 6246 6247 Implemented an automatic repair for predefined methods that must return 6248 sorted lists. This change will repair (by sorting) packages returned by 6249 _ALR, 6250 _PSS, and _TSS. Drivers can now assume that the packages are correctly 6251 sorted 6252 and do not contain NULL package elements. Adds one new file, 6253 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 6254 6255 Fixed a possible fault during predefined name validation if a return 6256 Package 6257 object contains NULL elements. Also adds a warning if a NULL element is 6258 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement 6259 may 6260 include repair or removal of all such NULL elements where possible. 6261 6262 Implemented additional module-level executable AML code support. This 6263 change 6264 will execute module-level code that is not at the root of the namespace 6265 (under a Device object, etc.) at table load time. Module-level executable 6266 AML 6267 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 6268 6269 Implemented a new internal function to create Integer objects. This 6270 function 6271 simplifies miscellaneous object creation code. ACPICA BZ 823. 6272 6273 Reduced the severity of predefined repair messages, Warning to Info. 6274 Since 6275 the object was successfully repaired, a warning is too severe. Reduced to 6276 an 6277 info message for now. These messages may eventually be changed to debug- 6278 only. 6279 ACPICA BZ 812. 6280 6281 Example Code and Data Size: These are the sizes for the OS-independent 6282 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6283 debug version of the code includes the debug output trace mechanism and 6284 has a 6285 much larger code and data size. 6286 6287 Previous Release: 6288 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 6289 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 6290 Current Release: 6291 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 6292 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 6293 6294 2) iASL Compiler/Disassembler and Tools: 6295 6296 iASL: Implemented Switch() with While(1) so that Break works correctly. 6297 This 6298 change correctly implements the Switch operator with a surrounding 6299 While(1) 6300 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 6301 6302 iASL: Added a message if a package initializer list is shorter than 6303 package 6304 length. Adds a new remark for a Package() declaration if an initializer 6305 list 6306 exists, but is shorter than the declared length of the package. Although 6307 technically legal, this is probably a coding error and it is seen in the 6308 field. ACPICA BZ 815. Lin Ming, Bob Moore. 6309 6310 iASL: Fixed a problem where the compiler could fault after the maximum 6311 number 6312 of errors was reached (200). 6313 6314 acpixtract: Fixed a possible warning for pointer cast if the compiler 6315 warning 6316 level set very high. 6317 6318 ---------------------------------------- 6319 13 October 2009. Summary of changes for version 20091013: 6320 6321 1) ACPI CA Core Subsystem: 6322 6323 Fixed a problem where an Operation Region _REG method could be executed 6324 more 6325 than once. If a custom address space handler is installed by the host 6326 before 6327 the "initialize operation regions" phase of the ACPICA initialization, 6328 any 6329 _REG methods for that address space could be executed twice. This change 6330 fixes the problem. ACPICA BZ 427. Lin Ming. 6331 6332 Fixed a possible memory leak for the Scope() ASL operator. When the exact 6333 invocation of "Scope(\)" is executed (change scope to root), one internal 6334 operand object was leaked. Lin Ming. 6335 6336 Implemented a run-time repair for the _MAT predefined method. If the _MAT 6337 return value is defined as a Field object in the AML, and the field 6338 size is less than or equal to the default width of an integer (32 or 6339 64),_MAT 6340 can incorrectly return an Integer instead of a Buffer. ACPICA now 6341 automatically repairs this problem. ACPICA BZ 810. 6342 6343 Implemented a run-time repair for the _BIF and _BIX predefined methods. 6344 The 6345 "OEM Information" field is often incorrectly returned as an Integer with 6346 value zero if the field is not supported by the platform. This is due to 6347 an 6348 ambiguity in the ACPI specification. The field should always be a string. 6349 ACPICA now automatically repairs this problem by returning a NULL string 6350 within the returned Package. ACPICA BZ 807. 6351 6352 Example Code and Data Size: These are the sizes for the OS-independent 6353 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6354 debug version of the code includes the debug output trace mechanism and 6355 has a 6356 much larger code and data size. 6357 6358 Previous Release: 6359 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 6360 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 6361 Current Release: 6362 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 6363 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 6364 6365 2) iASL Compiler/Disassembler and Tools: 6366 6367 Disassembler: Fixed a problem where references to external symbols that 6368 contained one or more parent-prefixes (carats) were not handled 6369 correctly, 6370 possibly causing a fault. ACPICA BZ 806. Lin Ming. 6371 6372 Disassembler: Restructured the code so that all functions that handle 6373 external symbols are in a single module. One new file is added, 6374 common/dmextern.c. 6375 6376 AML Debugger: Added a max count argument for the Batch command (which 6377 executes multiple predefined methods within the namespace.) 6378 6379 iASL: Updated the compiler documentation (User Reference.) Available at 6380 http://www.acpica.org/documentation/. ACPICA BZ 750. 6381 6382 AcpiXtract: Updated for Lint and other formatting changes. Close all open 6383 files. 6384 6385 ---------------------------------------- 6386 03 September 2009. Summary of changes for version 20090903: 6387 6388 1) ACPI CA Core Subsystem: 6389 6390 For Windows Vista compatibility, added the automatic execution of an _INI 6391 method located at the namespace root (\_INI). This method is executed at 6392 table load time. This support is in addition to the automatic execution 6393 of 6394 \_SB._INI. Lin Ming. 6395 6396 Fixed a possible memory leak in the interpreter for AML package objects 6397 if 6398 the package initializer list is longer than the defined size of the 6399 package. 6400 This apparently can only happen if the BIOS changes the package size on 6401 the 6402 fly (seen in a _PSS object), as ASL compilers do not allow this. The 6403 interpreter will truncate the package to the defined size (and issue an 6404 error 6405 message), but previously could leave the extra objects undeleted if they 6406 were 6407 pre-created during the argument processing (such is the case if the 6408 package 6409 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 6410 6411 Fixed a problem seen when a Buffer or String is stored to itself via ASL. 6412 This has been reported in the field. Previously, ACPICA would zero out 6413 the 6414 buffer/string. Now, the operation is treated as a noop. Provides Windows 6415 compatibility. ACPICA BZ 803. Lin Ming. 6416 6417 Removed an extraneous error message for ASL constructs of the form 6418 Store(LocalX,LocalX) when LocalX is uninitialized. These curious 6419 statements 6420 are seen in many BIOSs and are once again treated as NOOPs and no error 6421 is 6422 emitted when they are encountered. ACPICA BZ 785. 6423 6424 Fixed an extraneous warning message if a _DSM reserved method returns a 6425 Package object. _DSM can return any type of object, so validation on the 6426 return type cannot be performed. ACPICA BZ 802. 6427 6428 Example Code and Data Size: These are the sizes for the OS-independent 6429 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6430 debug version of the code includes the debug output trace mechanism and 6431 has a 6432 much larger code and data size. 6433 6434 Previous Release: 6435 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 6436 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 6437 Current Release: 6438 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 6439 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 6440 6441 2) iASL Compiler/Disassembler and Tools: 6442 6443 iASL: Fixed a problem with the use of the Alias operator and Resource 6444 Templates. The correct alias is now constructed and no error is emitted. 6445 ACPICA BZ 738. 6446 6447 iASL: Implemented the -I option to specify additional search directories 6448 for 6449 include files. Allows multiple additional search paths for include files. 6450 Directories are searched in the order specified on the command line 6451 (after 6452 the local directory is searched.) ACPICA BZ 800. 6453 6454 iASL: Fixed a problem where the full pathname for include files was not 6455 emitted for warnings/errors. This caused the IDE support to not work 6456 properly. ACPICA BZ 765. 6457 6458 iASL: Implemented the -@ option to specify a Windows-style response file 6459 containing additional command line options. ACPICA BZ 801. 6460 6461 AcpiExec: Added support to load multiple AML files simultaneously (such 6462 as 6463 a 6464 DSDT and multiple SSDTs). Also added support for wildcards within the AML 6465 pathname. These features allow all machine tables to be easily loaded and 6466 debugged together. ACPICA BZ 804. 6467 6468 Disassembler: Added missing support for disassembly of HEST table Error 6469 Bank 6470 subtables. 6471 6472 ---------------------------------------- 6473 30 July 2009. Summary of changes for version 20090730: 6474 6475 The ACPI 4.0 implementation for ACPICA is complete with this release. 6476 6477 1) ACPI CA Core Subsystem: 6478 6479 ACPI 4.0: Added header file support for all new and changed ACPI tables. 6480 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are 6481 new 6482 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, 6483 BERT, 6484 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. 6485 There 6486 have been some ACPI 4.0 changes to other existing tables. Split the large 6487 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 6488 6489 ACPI 4.0: Implemented predefined name validation for all new names. There 6490 are 6491 31 new names in ACPI 4.0. The predefined validation module was split into 6492 two 6493 files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 6494 6495 Implemented support for so-called "module-level executable code". This is 6496 executable AML code that exists outside of any control method and is 6497 intended 6498 to be executed at table load time. Although illegal since ACPI 2.0, this 6499 type 6500 of code still exists and is apparently still being created. Blocks of 6501 this 6502 code are now detected and executed as intended. Currently, the code 6503 blocks 6504 must exist under either an If, Else, or While construct; these are the 6505 typical cases seen in the field. ACPICA BZ 762. Lin Ming. 6506 6507 Implemented an automatic dynamic repair for predefined names that return 6508 nested Package objects. This applies to predefined names that are defined 6509 to 6510 return a variable-length Package of sub-packages. If the number of sub- 6511 packages is one, BIOS code is occasionally seen that creates a simple 6512 single 6513 package with no sub-packages. This code attempts to fix the problem by 6514 wrapping a new package object around the existing package. These methods 6515 can 6516 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA 6517 BZ 6518 790. 6519 6520 Fixed a regression introduced in 20090625 for the AcpiGetDevices 6521 interface. 6522 The _HID/_CID matching was broken and no longer matched IDs correctly. 6523 ACPICA 6524 BZ 793. 6525 6526 Fixed a problem with AcpiReset where the reset would silently fail if the 6527 register was one of the protected I/O ports. AcpiReset now bypasses the 6528 port 6529 validation mechanism. This may eventually be driven into the 6530 AcpiRead/Write 6531 interfaces. 6532 6533 Fixed a regression related to the recent update of the AcpiRead/Write 6534 interfaces. A sleep/suspend could fail if the optional PM2 Control 6535 register 6536 does not exist during an attempt to write the Bus Master Arbitration bit. 6537 (However, some hosts already delete the code that writes this bit, and 6538 the 6539 code may in fact be obsolete at this date.) ACPICA BZ 799. 6540 6541 Fixed a problem where AcpiTerminate could fault if inadvertently called 6542 twice 6543 in succession. ACPICA BZ 795. 6544 6545 Example Code and Data Size: These are the sizes for the OS-independent 6546 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6547 debug version of the code includes the debug output trace mechanism and 6548 has a 6549 much larger code and data size. 6550 6551 Previous Release: 6552 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 6553 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 6554 Current Release: 6555 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 6556 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 6557 6558 2) iASL Compiler/Disassembler and Tools: 6559 6560 ACPI 4.0: Implemented disassembler support for all new ACPI tables and 6561 changes to existing tables. ACPICA BZ 775. 6562 6563 ---------------------------------------- 6564 25 June 2009. Summary of changes for version 20090625: 6565 6566 The ACPI 4.0 Specification was released on June 16 and is available at 6567 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 6568 continue for the next few releases. 6569 6570 1) ACPI CA Core Subsystem: 6571 6572 ACPI 4.0: Implemented interpreter support for the IPMI operation region 6573 address space. Includes support for bi-directional data buffers and an 6574 IPMI 6575 address space handler (to be installed by an IPMI device driver.) ACPICA 6576 BZ 6577 773. Lin Ming. 6578 6579 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. 6580 Includes 6581 support in both the header files and the disassembler. 6582 6583 Completed a major update for the AcpiGetObjectInfo external interface. 6584 Changes include: 6585 - Support for variable, unlimited length HID, UID, and CID strings. 6586 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, 6587 etc.) 6588 - Call the _SxW power methods on behalf of a device object. 6589 - Determine if a device is a PCI root bridge. 6590 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 6591 These changes will require an update to all callers of this interface. 6592 See 6593 the updated ACPICA Programmer Reference for details. One new source file 6594 has 6595 been added - utilities/utids.c. ACPICA BZ 368, 780. 6596 6597 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 6598 transfers. The Value parameter has been extended from 32 bits to 64 bits 6599 in 6600 order to support new ACPI 4.0 tables. These changes will require an 6601 update 6602 to 6603 all callers of these interfaces. See the ACPICA Programmer Reference for 6604 details. ACPICA BZ 768. 6605 6606 Fixed several problems with AcpiAttachData. The handler was not invoked 6607 when 6608 the host node was deleted. The data sub-object was not automatically 6609 deleted 6610 when the host node was deleted. The interface to the handler had an 6611 unused 6612 parameter, this was removed. ACPICA BZ 778. 6613 6614 Enhanced the function that dumps ACPI table headers. All non-printable 6615 characters in the string fields are now replaced with '?' (Signature, 6616 OemId, 6617 OemTableId, and CompilerId.) ACPI tables with non-printable characters in 6618 these fields are occasionally seen in the field. ACPICA BZ 788. 6619 6620 Fixed a problem with predefined method repair code where the code that 6621 attempts to repair/convert an object of incorrect type is only executed 6622 on 6623 the first time the predefined method is called. The mechanism that 6624 disables 6625 warnings on subsequent calls was interfering with the repair mechanism. 6626 ACPICA BZ 781. 6627 6628 Fixed a possible memory leak in the predefined validation/repair code 6629 when 6630 a 6631 buffer is automatically converted to an expected string object. 6632 6633 Removed obsolete 16-bit files from the distribution and from the current 6634 git 6635 tree head. ACPICA BZ 776. 6636 6637 Example Code and Data Size: These are the sizes for the OS-independent 6638 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6639 debug version of the code includes the debug output trace mechanism and 6640 has a 6641 much larger code and data size. 6642 6643 Previous Release: 6644 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 6645 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 6646 Current Release: 6647 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 6648 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 6649 6650 2) iASL Compiler/Disassembler and Tools: 6651 6652 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 6653 operation region keyword. ACPICA BZ 771, 772. Lin Ming. 6654 6655 ACPI 4.0: iASL - implemented compile-time validation support for all new 6656 predefined names and control methods (31 total). ACPICA BZ 769. 6657 6658 ---------------------------------------- 6659 21 May 2009. Summary of changes for version 20090521: 6660 6661 1) ACPI CA Core Subsystem: 6662 6663 Disabled the preservation of the SCI enable bit in the PM1 control 6664 register. 6665 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification 6666 to 6667 be 6668 a "preserved" bit - "OSPM always preserves this bit position", section 6669 4.7.3.2.1. However, some machines fail if this bit is in fact preserved 6670 because the bit needs to be explicitly set by the OS as a workaround. No 6671 machines fail if the bit is not preserved. Therefore, ACPICA no longer 6672 attempts to preserve this bit. 6673 6674 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 6675 incorrectly formed _PRT package could cause a fault. Added validation to 6676 ensure that each package element is actually a sub-package. 6677 6678 Implemented a new interface to install or override a single control 6679 method, 6680 AcpiInstallMethod. This interface is useful when debugging in order to 6681 repair 6682 an existing method or to install a missing method without having to 6683 override 6684 the entire ACPI table. See the ACPICA Programmer Reference for use and 6685 examples. Lin Ming, Bob Moore. 6686 6687 Fixed several reference count issues with the DdbHandle object that is 6688 created from a Load or LoadTable operator. Prevent premature deletion of 6689 the 6690 object. Also, mark the object as invalid once the table has been 6691 unloaded. 6692 This is needed because the handle itself may not be deleted after the 6693 table 6694 unload, depending on whether it has been stored in a named object by the 6695 caller. Lin Ming. 6696 6697 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 6698 mutexes of the same sync level are acquired but then not released in 6699 strict 6700 opposite order, the internally maintained Current Sync Level becomes 6701 confused 6702 and can cause subsequent execution errors. ACPICA BZ 471. 6703 6704 Changed the allowable release order for ASL mutex objects. The ACPI 4.0 6705 specification has been changed to make the SyncLevel for mutex objects 6706 more 6707 useful. When releasing a mutex, the SyncLevel of the mutex must now be 6708 the 6709 same as the current sync level. This makes more sense than the previous 6710 rule 6711 (SyncLevel less than or equal). This change updates the code to match the 6712 specification. 6713 6714 Fixed a problem with the local version of the AcpiOsPurgeCache function. 6715 The 6716 (local) cache must be locked during all cache object deletions. Andrew 6717 Baumann. 6718 6719 Updated the Load operator to use operation region interfaces. This 6720 replaces 6721 direct memory mapping with region access calls. Now, all region accesses 6722 go 6723 through the installed region handler as they should. 6724 6725 Simplified and optimized the NsGetNextNode function. Reduced parameter 6726 count 6727 and reduced code for this frequently used function. 6728 6729 Example Code and Data Size: These are the sizes for the OS-independent 6730 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6731 debug version of the code includes the debug output trace mechanism and 6732 has a 6733 much larger code and data size. 6734 6735 Previous Release: 6736 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 6737 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 6738 Current Release: 6739 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 6740 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 6741 6742 2) iASL Compiler/Disassembler and Tools: 6743 6744 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some 6745 problems 6746 with sub-table disassembly and handling invalid sub-tables. Attempt 6747 recovery 6748 after an invalid sub-table ID. 6749 6750 ---------------------------------------- 6751 22 April 2009. Summary of changes for version 20090422: 6752 6753 1) ACPI CA Core Subsystem: 6754 6755 Fixed a compatibility issue with the recently released I/O port 6756 protection 6757 mechanism. For windows compatibility, 1) On a port protection violation, 6758 simply ignore the request and do not return an exception (allow the 6759 control 6760 method to continue execution.) 2) If only part of the request overlaps a 6761 protected port, read/write the individual ports that are not protected. 6762 Linux 6763 BZ 13036. Lin Ming 6764 6765 Enhanced the execution of the ASL/AML BreakPoint operator so that it 6766 actually 6767 breaks into the AML debugger if the debugger is present. This matches the 6768 ACPI-defined behavior. 6769 6770 Fixed several possible warnings related to the use of the configurable 6771 ACPI_THREAD_ID. This type can now be configured as either an integer or a 6772 pointer with no warnings. Also fixes several warnings in printf-like 6773 statements for the 64-bit build when the type is configured as a pointer. 6774 ACPICA BZ 766, 767. 6775 6776 Fixed a number of possible warnings when compiling with gcc 4+ (depending 6777 on 6778 warning options.) Examples include printf formats, aliasing, unused 6779 globals, 6780 missing prototypes, missing switch default statements, use of non-ANSI 6781 library functions, use of non-ANSI constructs. See generate/unix/Makefile 6782 for 6783 a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 6784 6785 Example Code and Data Size: These are the sizes for the OS-independent 6786 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6787 debug version of the code includes the debug output trace mechanism and 6788 has a 6789 much larger code and data size. 6790 6791 Previous Release: 6792 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 6793 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 6794 Current Release: 6795 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 6796 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 6797 6798 2) iASL Compiler/Disassembler and Tools: 6799 6800 iASL: Fixed a generation warning from Bison 2.3 and fixed several 6801 warnings 6802 on 6803 the 64-bit build. 6804 6805 iASL: Fixed a problem where the Unix/Linux versions of the compiler could 6806 not 6807 correctly digest Windows/DOS formatted files (with CR/LF). 6808 6809 iASL: Added a new option for "quiet mode" (-va) that produces only the 6810 compilation summary, not individual errors and warnings. Useful for large 6811 batch compilations. 6812 6813 AcpiExec: Implemented a new option (-z) to enable a forced 6814 semaphore/mutex 6815 timeout that can be used to detect hang conditions during execution of 6816 AML 6817 code (includes both internal semaphores and AML-defined mutexes and 6818 events.) 6819 6820 Added new makefiles for the generation of acpica in a generic unix-like 6821 environment. These makefiles are intended to generate the acpica tools 6822 and 6823 utilities from the original acpica git source tree structure. 6824 6825 Test Suites: Updated and cleaned up the documentation files. Updated the 6826 copyrights to 2009, affecting all source files. Use the new version of 6827 iASL 6828 with quiet mode. Increased the number of available semaphores in the 6829 Windows 6830 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, 6831 added 6832 an alternate implementation of the semaphore timeout to allow aslts to 6833 execute fully on Cygwin. 6834 6835 ---------------------------------------- 6836 20 March 2009. Summary of changes for version 20090320: 6837 6838 1) ACPI CA Core Subsystem: 6839 6840 Fixed a possible race condition between AcpiWalkNamespace and dynamic 6841 table 6842 unloads. Added a reader/writer locking mechanism to allow multiple 6843 concurrent 6844 namespace walks (readers), but block a dynamic table unload until it can 6845 gain 6846 exclusive write access to the namespace. This fixes a problem where a 6847 table 6848 unload could (possibly catastrophically) delete the portion of the 6849 namespace 6850 that is currently being examined by a walk. Adds a new file, utlock.c, 6851 that 6852 implements the reader/writer lock mechanism. ACPICA BZ 749. 6853 6854 Fixed a regression introduced in version 20090220 where a change to the 6855 FADT 6856 handling could cause the ACPICA subsystem to access non-existent I/O 6857 ports. 6858 6859 Modified the handling of FADT register and table (FACS/DSDT) addresses. 6860 The 6861 FADT can contain both 32-bit and 64-bit versions of these addresses. 6862 Previously, the 64-bit versions were favored, meaning that if both 32 and 6863 64 6864 versions were valid, but not equal, the 64-bit version was used. This was 6865 found to cause some machines to fail. Now, in this case, the 32-bit 6866 version 6867 is used instead. This now matches the Windows behavior. 6868 6869 Implemented a new mechanism to protect certain I/O ports. Provides 6870 Microsoft 6871 compatibility and protects the standard PC I/O ports from access via AML 6872 code. Adds a new file, hwvalid.c 6873 6874 Fixed a possible extraneous warning message from the FADT support. The 6875 message warns of a 32/64 length mismatch between the legacy and GAS 6876 definitions for a register. 6877 6878 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface 6879 is 6880 made obsolete by the port protection mechanism above. It was previously 6881 used 6882 to validate the entire address range of an operation region, which could 6883 be 6884 incorrect if the range included illegal ports, but fields within the 6885 operation region did not actually access those ports. Validation is now 6886 performed on a per-field basis instead of the entire region. 6887 6888 Modified the handling of the PM1 Status Register ignored bit (bit 11.) 6889 Ignored bits must be "preserved" according to the ACPI spec. Usually, 6890 this 6891 means a read/modify/write when writing to the register. However, for 6892 status 6893 registers, writing a one means clear the event. Writing a zero means 6894 preserve 6895 the event (do not clear.) This behavior is clarified in the ACPI 4.0 6896 spec, 6897 and the ACPICA code now simply always writes a zero to the ignored bit. 6898 6899 Modified the handling of ignored bits for the PM1 A/B Control Registers. 6900 As 6901 per the ACPI specification, for the control registers, preserve 6902 (read/modify/write) all bits that are defined as either reserved or 6903 ignored. 6904 6905 Updated the handling of write-only bits in the PM1 A/B Control Registers. 6906 When reading the register, zero the write-only bits as per the ACPI spec. 6907 ACPICA BZ 443. Lin Ming. 6908 6909 Removed "Linux" from the list of supported _OSI strings. Linux no longer 6910 wants to reply true to this request. The Windows strings are the only 6911 paths 6912 through the AML that are tested and known to work properly. 6913 6914 Previous Release: 6915 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 6916 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 6917 Current Release: 6918 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 6919 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 6920 6921 2) iASL Compiler/Disassembler and Tools: 6922 6923 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c 6924 and 6925 aetables.c 6926 6927 ---------------------------------------- 6928 20 February 2009. Summary of changes for version 20090220: 6929 6930 1) ACPI CA Core Subsystem: 6931 6932 Optimized the ACPI register locking. Removed locking for reads from the 6933 ACPI 6934 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock 6935 is 6936 not required when reading the single-bit registers. The 6937 AcpiGetRegisterUnlocked function is no longer needed and has been 6938 removed. 6939 This will improve performance for reads on these registers. ACPICA BZ 6940 760. 6941 6942 Fixed the parameter validation for AcpiRead/Write. Now return 6943 AE_BAD_PARAMETER if the input register pointer is null, and 6944 AE_BAD_ADDRESS 6945 if 6946 the register has an address of zero. Previously, these cases simply 6947 returned 6948 AE_OK. For optional registers such as PM1B status/enable/control, the 6949 caller 6950 should check for a valid register address before calling. ACPICA BZ 748. 6951 6952 Renamed the external ACPI bit register access functions. Renamed 6953 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 6954 functions. The new names are AcpiReadBitRegister and 6955 AcpiWriteBitRegister. 6956 Also, restructured the code for these functions by simplifying the code 6957 path 6958 and condensing duplicate code to reduce code size. 6959 6960 Added new functions to transparently handle the possibly split PM1 A/B 6961 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two 6962 functions 6963 now handle the split registers for PM1 Status, Enable, and Control. 6964 ACPICA 6965 BZ 6966 746. 6967 6968 Added a function to handle the PM1 control registers, 6969 AcpiHwWritePm1Control. 6970 This function writes both of the PM1 control registers (A/B). These 6971 registers 6972 are different than the PM1 A/B status and enable registers in that 6973 different 6974 values can be written to the A/B registers. Most notably, the SLP_TYP 6975 bits 6976 can be different, as per the values returned from the _Sx predefined 6977 methods. 6978 6979 Removed an extra register write within AcpiHwClearAcpiStatus. This 6980 function 6981 was writing an optional PM1B status register twice. The existing call to 6982 the 6983 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 6984 A/B 6985 register. ACPICA BZ 751. 6986 6987 Split out the PM1 Status registers from the FADT. Added new globals for 6988 these 6989 registers (A/B), similar to the way the PM1 Enable registers are handled. 6990 Instead of overloading the FADT Event Register blocks. This makes the 6991 code 6992 clearer and less prone to error. 6993 6994 Fixed the warning message for when the platform contains too many ACPI 6995 tables 6996 for the default size of the global root table data structure. The 6997 calculation 6998 for the truncation value was incorrect. 6999 7000 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 7001 obsolete macro, since it is now a simple reference to ->common.type. 7002 There 7003 were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 7004 7005 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 7006 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 7007 simply SLEEP_TYPE. ACPICA BZ 754. 7008 7009 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 7010 function is only needed on 64-bit host operating systems and is thus not 7011 included for 32-bit hosts. 7012 7013 Debug output: print the input and result for invocations of the _OSI 7014 reserved 7015 control method via the ACPI_LV_INFO debug level. Also, reduced some of 7016 the 7017 verbosity of this debug level. Len Brown. 7018 7019 Example Code and Data Size: These are the sizes for the OS-independent 7020 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7021 debug version of the code includes the debug output trace mechanism and 7022 has a 7023 much larger code and data size. 7024 7025 Previous Release: 7026 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 7027 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 7028 Current Release: 7029 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 7030 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 7031 7032 2) iASL Compiler/Disassembler and Tools: 7033 7034 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 7035 various legal performance profiles. 7036 7037 ---------------------------------------- 7038 23 January 2009. Summary of changes for version 20090123: 7039 7040 1) ACPI CA Core Subsystem: 7041 7042 Added the 2009 copyright to all module headers and signons. This affects 7043 virtually every file in the ACPICA core subsystem, the iASL compiler, and 7044 the tools/utilities. 7045 7046 Implemented a change to allow the host to override any ACPI table, 7047 including 7048 dynamically loaded tables. Previously, only the DSDT could be replaced by 7049 the 7050 host. With this change, the AcpiOsTableOverride interface is called for 7051 each 7052 table found in the RSDT/XSDT during ACPICA initialization, and also 7053 whenever 7054 a table is dynamically loaded via the AML Load operator. 7055 7056 Updated FADT flag definitions, especially the Boot Architecture flags. 7057 7058 Debugger: For the Find command, automatically pad the input ACPI name 7059 with 7060 underscores if the name is shorter than 4 characters. This enables a 7061 match 7062 with the actual namespace entry which is itself padded with underscores. 7063 7064 Example Code and Data Size: These are the sizes for the OS-independent 7065 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7066 debug version of the code includes the debug output trace mechanism and 7067 has a 7068 much larger code and data size. 7069 7070 Previous Release: 7071 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 7072 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 7073 Current Release: 7074 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 7075 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 7076 7077 2) iASL Compiler/Disassembler and Tools: 7078 7079 Fix build error under Bison-2.4. 7080 7081 Dissasembler: Enhanced FADT support. Added decoding of the Boot 7082 Architecture 7083 flags. Now decode all flags, regardless of the FADT version. Flag output 7084 includes the FADT version which first defined each flag. 7085 7086 The iASL -g option now dumps the RSDT to a file (in addition to the FADT 7087 and 7088 DSDT). Windows only. 7089 7090 ---------------------------------------- 7091 04 December 2008. Summary of changes for version 20081204: 7092 7093 1) ACPI CA Core Subsystem: 7094 7095 The ACPICA Programmer Reference has been completely updated and revamped 7096 for 7097 this release. This includes updates to the external interfaces, OSL 7098 interfaces, the overview sections, and the debugger reference. 7099 7100 Several new ACPICA interfaces have been implemented and documented in the 7101 programmer reference: 7102 AcpiReset - Writes the reset value to the FADT-defined reset register. 7103 AcpiDisableAllGpes - Disable all available GPEs. 7104 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 7105 AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 7106 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 7107 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 7108 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 7109 7110 Most of the public ACPI hardware-related interfaces have been moved to a 7111 new 7112 file, components/hardware/hwxface.c 7113 7114 Enhanced the FADT parsing and low-level ACPI register access: The ACPI 7115 register lengths within the FADT are now used, and the low level ACPI 7116 register access no longer hardcodes the ACPI register lengths. Given that 7117 there may be some risk in actually trusting the FADT register lengths, a 7118 run- 7119 time option was added to fall back to the default hardcoded lengths if 7120 the 7121 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 7122 option is set to true for now, and a warning is issued if a suspicious 7123 FADT 7124 register length is overridden with the default value. 7125 7126 Fixed a reference count issue in NsRepairObject. This problem was 7127 introduced 7128 in version 20081031 as part of a fix to repair Buffer objects within 7129 Packages. Lin Ming. 7130 7131 Added semaphore support to the Linux/Unix application OS-services layer 7132 (OSL). ACPICA BZ 448. Lin Ming. 7133 7134 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes 7135 will 7136 be implemented in the OSL, or will binary semaphores be used instead. 7137 7138 Example Code and Data Size: These are the sizes for the OS-independent 7139 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7140 debug version of the code includes the debug output trace mechanism and 7141 has a 7142 much larger code and data size. 7143 7144 Previous Release: 7145 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 7146 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 7147 Current Release: 7148 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 7149 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 7150 7151 2) iASL Compiler/Disassembler and Tools: 7152 7153 iASL: Completed the '-e' option to include additional ACPI tables in 7154 order 7155 to 7156 aid with disassembly and External statement generation. ACPICA BZ 742. 7157 Lin 7158 Ming. 7159 7160 iASL: Removed the "named object in while loop" error. The compiler cannot 7161 determine how many times a loop will execute. ACPICA BZ 730. 7162 7163 Disassembler: Implemented support for FADT revision 2 (MS extension). 7164 ACPICA 7165 BZ 743. 7166 7167 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and 7168 MCFG). 7169 7170 ---------------------------------------- 7171 31 October 2008. Summary of changes for version 20081031: 7172 7173 1) ACPI CA Core Subsystem: 7174 7175 Restructured the ACPICA header files into public/private. acpi.h now 7176 includes 7177 only the "public" acpica headers. All other acpica headers are "private" 7178 and 7179 should not be included by acpica users. One new file, accommon.h is used 7180 to 7181 include the commonly used private headers for acpica code generation. 7182 Future 7183 plans include moving all private headers to a new subdirectory. 7184 7185 Implemented an automatic Buffer->String return value conversion for 7186 predefined ACPI methods. For these methods (such as _BIF), added 7187 automatic 7188 conversion for return objects that are required to be a String, but a 7189 Buffer 7190 was found instead. This can happen when reading string battery data from 7191 an 7192 operation region, because it used to be difficult to convert the data 7193 from 7194 buffer to string from within the ASL. Ensures that the host OS is 7195 provided 7196 with a valid null-terminated string. Linux BZ 11822. 7197 7198 Updated the FACS waking vector interfaces. Split 7199 AcpiSetFirmwareWakingVector 7200 into two: one for the 32-bit vector, another for the 64-bit vector. This 7201 is 7202 required because the host OS must setup the wake much differently for 7203 each 7204 vector (real vs. protected mode, etc.) and the interface itself should 7205 not 7206 be 7207 deciding which vector to use. Also, eliminated the 7208 GetFirmwareWakingVector 7209 interface, as it served no purpose (only the firmware reads the vector, 7210 OS 7211 only writes the vector.) ACPICA BZ 731. 7212 7213 Implemented a mechanism to escape infinite AML While() loops. Added a 7214 loop 7215 counter to force exit from AML While loops if the count becomes too 7216 large. 7217 This can occur in poorly written AML when the hardware does not respond 7218 within a while loop and the loop does not implement a timeout. The 7219 maximum 7220 loop count is configurable. A new exception code is returned when a loop 7221 is 7222 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 7223 7224 Optimized the execution of AML While loops. Previously, a control state 7225 object was allocated and freed for each execution of the loop. The 7226 optimization is to simply reuse the control state for each iteration. 7227 This 7228 speeds up the raw loop execution time by about 5%. 7229 7230 Enhanced the implicit return mechanism. For Windows compatibility, return 7231 an 7232 implicit integer of value zero for methods that contain no executable 7233 code. 7234 Such methods are seen in the field as stubs (presumably), and can cause 7235 drivers to fail if they expect a return value. Lin Ming. 7236 7237 Allow multiple backslashes as root prefixes in namepaths. In a fully 7238 qualified namepath, allow multiple backslash prefixes. This can happen 7239 (and 7240 is seen in the field) because of the use of a double-backslash in strings 7241 (since backslash is the escape character) causing confusion. ACPICA BZ 7242 739 7243 Lin Ming. 7244 7245 Emit a warning if two different FACS or DSDT tables are discovered in the 7246 FADT. Checks if there are two valid but different addresses for the FACS 7247 and 7248 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 7249 7250 Consolidated the method argument count validation code. Merged the code 7251 that 7252 validates control method argument counts into the predefined validation 7253 module. Eliminates possible multiple warnings for incorrect argument 7254 counts. 7255 7256 Implemented ACPICA example code. Includes code for ACPICA initialization, 7257 handler installation, and calling a control method. Available at 7258 source/tools/examples. 7259 7260 Added a global pointer for FACS table to simplify internal FACS access. 7261 Use 7262 the global pointer instead of using AcpiGetTableByIndex for each FACS 7263 access. 7264 This simplifies the code for the Global Lock and the Firmware Waking 7265 Vector(s). 7266 7267 Example Code and Data Size: These are the sizes for the OS-independent 7268 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7269 debug version of the code includes the debug output trace mechanism and 7270 has a 7271 much larger code and data size. 7272 7273 Previous Release: 7274 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 7275 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 7276 Current Release: 7277 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 7278 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 7279 7280 2) iASL Compiler/Disassembler and Tools: 7281 7282 iASL: Improved disassembly of external method calls. Added the -e option 7283 to 7284 allow the inclusion of additional ACPI tables to help with the 7285 disassembly 7286 of 7287 method invocations and the generation of external declarations during the 7288 disassembly. Certain external method invocations cannot be disassembled 7289 properly without the actual declaration of the method. Use the -e option 7290 to 7291 include the table where the external method(s) are actually declared. 7292 Most 7293 useful for disassembling SSDTs that make method calls back to the master 7294 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl 7295 -d 7296 -e dsdt.aml ssdt1.aml 7297 7298 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 7299 problem where the use of an alias within a namepath would result in a not 7300 found error or cause the compiler to fault. Also now allows forward 7301 references from the Alias operator itself. ACPICA BZ 738. 7302 7303 ---------------------------------------- 7304 26 September 2008. Summary of changes for version 20080926: 7305 7306 1) ACPI CA Core Subsystem: 7307 7308 Designed and implemented a mechanism to validate predefined ACPI methods 7309 and 7310 objects. This code validates the predefined ACPI objects (objects whose 7311 names 7312 start with underscore) that appear in the namespace, at the time they are 7313 evaluated. The argument count and the type of the returned object are 7314 validated against the ACPI specification. The purpose of this validation 7315 is 7316 to detect problems with the BIOS-implemented predefined ACPI objects 7317 before 7318 the results are returned to the ACPI-related drivers. Future enhancements 7319 may 7320 include actual repair of incorrect return objects where possible. Two new 7321 files are nspredef.c and acpredef.h. 7322 7323 Fixed a fault in the AML parser if a memory allocation fails during the 7324 Op 7325 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 7326 7327 Fixed an issue with implicit return compatibility. This change improves 7328 the 7329 implicit return mechanism to be more compatible with the MS interpreter. 7330 Lin 7331 Ming, ACPICA BZ 349. 7332 7333 Implemented support for zero-length buffer-to-string conversions. Allow 7334 zero 7335 length strings during interpreter buffer-to-string conversions. For 7336 example, 7337 during the ToDecimalString and ToHexString operators, as well as implicit 7338 conversions. Fiodor Suietov, ACPICA BZ 585. 7339 7340 Fixed two possible memory leaks in the error exit paths of 7341 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions 7342 are 7343 similar in that they use a stack of state objects in order to eliminate 7344 recursion. The stack must be fully unwound and deallocated if an error 7345 occurs. Lin Ming. ACPICA BZ 383. 7346 7347 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the 7348 global 7349 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 7350 Moore ACPICA BZ 442. 7351 7352 Removed the obsolete version number in module headers. Removed the 7353 "$Revision" number that appeared in each module header. This version 7354 number 7355 was useful under SourceSafe and CVS, but has no meaning under git. It is 7356 not 7357 only incorrect, it could also be misleading. 7358 7359 Example Code and Data Size: These are the sizes for the OS-independent 7360 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7361 debug version of the code includes the debug output trace mechanism and 7362 has a 7363 much larger code and data size. 7364 7365 Previous Release: 7366 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 7367 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 7368 Current Release: 7369 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 7370 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 7371 7372 ---------------------------------------- 7373 29 August 2008. Summary of changes for version 20080829: 7374 7375 1) ACPI CA Core Subsystem: 7376 7377 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 7378 Reference. Changes include the elimination of cheating on the Object 7379 field 7380 for the DdbHandle subtype, addition of a reference class field to 7381 differentiate the various reference types (instead of an AML opcode), and 7382 the 7383 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 7384 7385 Reduce an error to a warning for an incorrect method argument count. 7386 Previously aborted with an error if too few arguments were passed to a 7387 control method via the external ACPICA interface. Now issue a warning 7388 instead 7389 and continue. Handles the case where the method inadvertently declares 7390 too 7391 many arguments, but does not actually use the extra ones. Applies mainly 7392 to 7393 the predefined methods. Lin Ming. Linux BZ 11032. 7394 7395 Disallow the evaluation of named object types with no intrinsic value. 7396 Return 7397 AE_TYPE for objects that have no value and therefore evaluation is 7398 undefined: 7399 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation 7400 of 7401 these types were allowed, but an exception would be generated at some 7402 point 7403 during the evaluation. Now, the error is generated up front. 7404 7405 Fixed a possible memory leak in the AcpiNsGetExternalPathname function 7406 (nsnames.c). Fixes a leak in the error exit path. 7407 7408 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These 7409 debug 7410 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and 7411 ACPI_EXCEPTION 7412 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 7413 ACPI_LV_EVENTS. 7414 7415 Removed obsolete and/or unused exception codes from the acexcep.h header. 7416 There is the possibility that certain device drivers may be affected if 7417 they 7418 use any of these exceptions. 7419 7420 The ACPICA documentation has been added to the public git source tree, 7421 under 7422 acpica/documents. Included are the ACPICA programmer reference, the iASL 7423 compiler reference, and the changes.txt release logfile. 7424 7425 Example Code and Data Size: These are the sizes for the OS-independent 7426 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7427 debug version of the code includes the debug output trace mechanism and 7428 has a 7429 much larger code and data size. 7430 7431 Previous Release: 7432 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 7433 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 7434 Current Release: 7435 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 7436 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 7437 7438 2) iASL Compiler/Disassembler and Tools: 7439 7440 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 7441 defines _SCP with 3 arguments. Previous versions defined it with only 1 7442 argument. iASL now allows both definitions. 7443 7444 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for 7445 zero- 7446 length subtables when disassembling ACPI tables. Also fixed a couple of 7447 errors where a full 16-bit table type field was not extracted from the 7448 input 7449 properly. 7450 7451 acpisrc: Improve comment counting mechanism for generating source code 7452 statistics. Count first and last lines of multi-line comments as 7453 whitespace, 7454 not comment lines. Handle Linux legal header in addition to standard 7455 acpica 7456 header. 7457 7458 ---------------------------------------- 7459 7460 29 July 2008. Summary of changes for version 20080729: 7461 7462 1) ACPI CA Core Subsystem: 7463 7464 Fix a possible deadlock in the GPE dispatch. Remove call to 7465 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will 7466 attempt 7467 to acquire the GPE lock but can deadlock since the GPE lock is already 7468 held 7469 at dispatch time. This code was introduced in version 20060831 as a 7470 response 7471 to Linux BZ 6881 and has since been removed from Linux. 7472 7473 Add a function to dereference returned reference objects. Examines the 7474 return 7475 object from a call to AcpiEvaluateObject. Any Index or RefOf references 7476 are 7477 automatically dereferenced in an attempt to return something useful 7478 (these 7479 reference types cannot be converted into an external ACPI_OBJECT.) 7480 Provides 7481 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 7482 7483 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 7484 subtables for the MADT and one new subtable for the SRAT. Includes 7485 disassembler and AcpiSrc support. Data from the Intel 64 Architecture 7486 x2APIC 7487 Specification, June 2008. 7488 7489 Additional error checking for pathname utilities. Add error check after 7490 all 7491 calls to AcpiNsGetPathnameLength. Add status return from 7492 AcpiNsBuildExternalPath and check after all calls. Add parameter 7493 validation 7494 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 7495 7496 Return status from the global init function AcpiUtGlobalInitialize. This 7497 is 7498 used by both the kernel subsystem and the utilities such as iASL 7499 compiler. 7500 The function could possibly fail when the caches are initialized. Yang 7501 Yi. 7502 7503 Add a function to decode reference object types to strings. Created for 7504 improved error messages. 7505 7506 Improve object conversion error messages. Better error messages during 7507 object 7508 conversion from internal to the external ACPI_OBJECT. Used for external 7509 calls 7510 to AcpiEvaluateObject. 7511 7512 Example Code and Data Size: These are the sizes for the OS-independent 7513 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7514 debug version of the code includes the debug output trace mechanism and 7515 has a 7516 much larger code and data size. 7517 7518 Previous Release: 7519 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 7520 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 7521 Current Release: 7522 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 7523 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 7524 7525 2) iASL Compiler/Disassembler and Tools: 7526 7527 Debugger: fix a possible hang when evaluating non-methods. Fixes a 7528 problem 7529 introduced in version 20080701. If the object being evaluated (via 7530 execute 7531 command) is not a method, the debugger can hang while trying to obtain 7532 non- 7533 existent parameters. 7534 7535 iASL: relax error for using reserved "_T_x" identifiers. These names can 7536 appear in a disassembled ASL file if they were emitted by the original 7537 compiler. Instead of issuing an error or warning and forcing the user to 7538 manually change these names, issue a remark instead. 7539 7540 iASL: error if named object created in while loop. Emit an error if any 7541 named 7542 object is created within a While loop. If allowed, this code will 7543 generate 7544 a 7545 run-time error on the second iteration of the loop when an attempt is 7546 made 7547 to 7548 create the same named object twice. ACPICA bugzilla 730. 7549 7550 iASL: Support absolute pathnames for include files. Add support for 7551 absolute 7552 pathnames within the Include operator. previously, only relative 7553 pathnames 7554 were supported. 7555 7556 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource 7557 Descriptor. 7558 The ACPI spec requires one interrupt minimum. BZ 423 7559 7560 iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 7561 Handles the case for the Interrupt Resource Descriptor where 7562 the ResourceSource argument is omitted but ResourceSourceIndex 7563 is present. Now leave room for the Index. BZ 426 7564 7565 iASL: Prevent error message if CondRefOf target does not exist. Fixes 7566 cases 7567 where an error message is emitted if the target does not exist. BZ 516 7568 7569 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 7570 (get ACPI tables on Windows). This was apparently broken in version 7571 20070919. 7572 7573 AcpiXtract: Handle EOF while extracting data. Correctly handle the case 7574 where 7575 the EOF happens immediately after the last table in the input file. Print 7576 completion message. Previously, no message was displayed in this case. 7577 7578 ---------------------------------------- 7579 01 July 2008. Summary of changes for version 20080701: 7580 7581 0) Git source tree / acpica.org 7582 7583 Fixed a problem where a git-clone from http would not transfer the entire 7584 source tree. 7585 7586 1) ACPI CA Core Subsystem: 7587 7588 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 7589 enable bit. Now performs a read-change-write of the enable register 7590 instead 7591 of simply writing out the cached enable mask. This will prevent 7592 inadvertent 7593 enabling of GPEs if a rogue GPE is received during initialization (before 7594 GPE 7595 handlers are installed.) 7596 7597 Implemented a copy for dynamically loaded tables. Previously, dynamically 7598 loaded tables were simply mapped - but on some machines this memory is 7599 corrupted after suspend. Now copy the table to a local buffer. For the 7600 OpRegion case, added checksum verify. Use the table length from the table 7601 header, not the region length. For the Buffer case, use the table length 7602 also. Dennis Noordsij, Bob Moore. BZ 10734 7603 7604 Fixed a problem where the same ACPI table could not be dynamically loaded 7605 and 7606 unloaded more than once. Without this change, a table cannot be loaded 7607 again 7608 once it has been loaded/unloaded one time. The current mechanism does not 7609 unregister a table upon an unload. During a load, if the same table is 7610 found, 7611 this no longer returns an exception. BZ 722 7612 7613 Fixed a problem where the wrong descriptor length was calculated for the 7614 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as 7615 EndTag 7616 are calculated as 12 bytes long, but the actual length in the internal 7617 descriptor is 16 because of the round-up to 8 on the 64-bit build. 7618 Reported 7619 by Linn Crosetto. BZ 728 7620 7621 Fixed a possible memory leak in the Unload operator. The DdbHandle 7622 returned 7623 by Load() did not have its reference count decremented during unload, 7624 leading 7625 to a memory leak. Lin Ming. BZ 727 7626 7627 Fixed a possible memory leak when deleting thermal/processor objects. Any 7628 associated notify handlers (and objects) were not being deleted. Fiodor 7629 Suietov. BZ 506 7630 7631 Fixed the ordering of the ASCII names in the global mutex table to match 7632 the 7633 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug 7634 only. 7635 Vegard Nossum. BZ 726 7636 7637 Enhanced the AcpiGetObjectInfo interface to return the number of required 7638 arguments if the object is a control method. Added this call to the 7639 debugger 7640 so the proper number of default arguments are passed to a method. This 7641 prevents a warning when executing methods from AcpiExec. 7642 7643 Added a check for an invalid handle in AcpiGetObjectInfo. Return 7644 AE_BAD_PARAMETER if input handle is invalid. BZ 474 7645 7646 Fixed an extraneous warning from exconfig.c on the 64-bit build. 7647 7648 Example Code and Data Size: These are the sizes for the OS-independent 7649 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7650 debug version of the code includes the debug output trace mechanism and 7651 has a 7652 much larger code and data size. 7653 7654 Previous Release: 7655 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 7656 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 7657 Current Release: 7658 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 7659 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 7660 7661 2) iASL Compiler/Disassembler and Tools: 7662 7663 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 7664 resource descriptor names. 7665 7666 iASL: Detect invalid ASCII characters in input (windows version). Removed 7667 the 7668 "-CF" flag from the flex compile, enables correct detection of non-ASCII 7669 characters in the input. BZ 441 7670 7671 iASL: Eliminate warning when result of LoadTable is not used. Eliminate 7672 the 7673 "result of operation not used" warning when the DDB handle returned from 7674 LoadTable is not used. The warning is not needed. BZ 590 7675 7676 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG 7677 method 7678 to 7679 pass address of table to the AML. Added option to disable OpRegion 7680 simulation 7681 to allow creation of an OpRegion with a real address that was passed to 7682 _CFG. 7683 All of this allows testing of the Load and Unload operators from 7684 AcpiExec. 7685 7686 Debugger: update tables command for unloaded tables. Handle unloaded 7687 tables 7688 and use the standard table header output routine. 7689 7690 ---------------------------------------- 7691 09 June 2008. Summary of changes for version 20080609: 7692 7693 1) ACPI CA Core Subsystem: 7694 7695 Implemented a workaround for reversed _PRT entries. A significant number 7696 of 7697 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 7698 change dynamically detects and repairs this problem. Provides 7699 compatibility 7700 with MS ACPI. BZ 6859 7701 7702 Simplified the internal ACPI hardware interfaces to eliminate the locking 7703 flag parameter from Register Read/Write. Added a new external interface, 7704 AcpiGetRegisterUnlocked. 7705 7706 Fixed a problem where the invocation of a GPE control method could hang. 7707 This 7708 was a regression introduced in 20080514. The new method argument count 7709 validation mechanism can enter an infinite loop when a GPE method is 7710 dispatched. Problem fixed by removing the obsolete code that passed GPE 7711 block 7712 information to the notify handler via the control method parameter 7713 pointer. 7714 7715 Fixed a problem where the _SST execution status was incorrectly returned 7716 to 7717 the caller of AcpiEnterSleepStatePrep. This was a regression introduced 7718 in 7719 20080514. _SST is optional and a NOT_FOUND exception should never be 7720 returned. BZ 716 7721 7722 Fixed a problem where a deleted object could be accessed from within the 7723 AML 7724 parser. This was a regression introduced in version 20080123 as a fix for 7725 the 7726 Unload operator. Lin Ming. BZ 10669 7727 7728 Cleaned up the debug operand dump mechanism. Eliminated unnecessary 7729 operands 7730 and eliminated the use of a negative index in a loop. Operands are now 7731 displayed in the correct order, not backwards. This also fixes a 7732 regression 7733 introduced in 20080514 on 64-bit systems where the elimination of 7734 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 7735 715 7736 7737 Fixed a possible memory leak in EvPciConfigRegionSetup where the error 7738 exit 7739 path did not delete a locally allocated structure. 7740 7741 Updated definitions for the DMAR and SRAT tables to synchronize with the 7742 current specifications. Includes disassembler support. 7743 7744 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 7745 loop termination value was used. Loop terminated on iteration early, 7746 missing 7747 one mutex. Linn Crosetto 7748 7749 Example Code and Data Size: These are the sizes for the OS-independent 7750 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7751 debug version of the code includes the debug output trace mechanism and 7752 has a 7753 much larger code and data size. 7754 7755 Previous Release: 7756 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 7757 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 7758 Current Release: 7759 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 7760 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 7761 7762 2) iASL Compiler/Disassembler and Tools: 7763 7764 Disassembler: Implemented support for EisaId() within _CID objects. Now 7765 disassemble integer _CID objects back to EisaId invocations, including 7766 multiple integers within _CID packages. Includes single-step support for 7767 debugger also. 7768 7769 Disassembler: Added support for DMAR and SRAT table definition changes. 7770 7771 ---------------------------------------- 7772 14 May 2008. Summary of changes for version 20080514: 7773 7774 1) ACPI CA Core Subsystem: 7775 7776 Fixed a problem where GPEs were enabled too early during the ACPICA 7777 initialization. This could lead to "handler not installed" errors on some 7778 machines. Moved GPE enable until after _REG/_STA/_INI methods are run. 7779 This 7780 ensures that all operation regions and devices throughout the namespace 7781 have 7782 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 7783 7784 Implemented a change to the enter sleep code. Moved execution of the _GTS 7785 method to just before setting sleep enable bit. The execution was moved 7786 from 7787 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 7788 immediately before the SLP_EN bit is set, as per the ACPI specification. 7789 Luming Yu, BZ 1653. 7790 7791 Implemented a fix to disable unknown GPEs (2nd version). Now always 7792 disable 7793 the GPE, even if ACPICA thinks that that it is already disabled. It is 7794 possible that the AML or some other code has enabled the GPE unbeknownst 7795 to 7796 the ACPICA code. 7797 7798 Fixed a problem with the Field operator where zero-length fields would 7799 return 7800 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length 7801 ASL 7802 field declarations in Field(), BankField(), and IndexField(). BZ 10606. 7803 7804 Implemented a fix for the Load operator, now load the table at the 7805 namespace 7806 root. This reverts a change introduced in version 20071019. The table is 7807 now 7808 loaded at the namespace root even though this goes against the ACPI 7809 specification. This provides compatibility with other ACPI 7810 implementations. 7811 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin 7812 Ming. 7813 7814 Fixed a problem where ACPICA would not Load() tables with unusual 7815 signatures. 7816 Now ignore ACPI table signature for Load() operator. Only "SSDT" is 7817 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 7818 Therefore, signature validation is worthless. Apparently MS ACPI accepts 7819 such 7820 signatures, ACPICA must be compatible. BZ 10454. 7821 7822 Fixed a possible negative array index in AcpiUtValidateException. Added 7823 NULL 7824 fields to the exception string arrays to eliminate a -1 subtraction on 7825 the 7826 SubStatus field. 7827 7828 Updated the debug tracking macros to reduce overall code and data size. 7829 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 7830 instead of pointers to static strings. Jan Beulich and Bob Moore. 7831 7832 Implemented argument count checking in control method invocation via 7833 AcpiEvaluateObject. Now emit an error if too few arguments, warning if 7834 too 7835 many. This applies only to extern programmatic control method execution, 7836 not 7837 method-to-method calls within the AML. Lin Ming. 7838 7839 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is 7840 no 7841 longer needed, especially with the removal of 16-bit support. It was 7842 replaced 7843 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 7844 bit 7845 on 7846 32/64-bit platforms is required. 7847 7848 Added the C const qualifier for appropriate string constants -- mostly 7849 MODULE_NAME and printf format strings. Jan Beulich. 7850 7851 Example Code and Data Size: These are the sizes for the OS-independent 7852 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7853 debug version of the code includes the debug output trace mechanism and 7854 has a 7855 much larger code and data size. 7856 7857 Previous Release: 7858 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 7859 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 7860 Current Release: 7861 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 7862 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 7863 7864 2) iASL Compiler/Disassembler and Tools: 7865 7866 Implemented ACPI table revision ID validation in the disassembler. Zero 7867 is 7868 always invalid. For DSDTs, the ID controls the interpreter integer width. 7869 1 7870 means 32-bit and this is unusual. 2 or greater is 64-bit. 7871 7872 ---------------------------------------- 7873 21 March 2008. Summary of changes for version 20080321: 7874 7875 1) ACPI CA Core Subsystem: 7876 7877 Implemented an additional change to the GPE support in order to suppress 7878 spurious or stray GPEs. The AcpiEvDisableGpe function will now 7879 permanently 7880 disable incoming GPEs that are neither enabled nor disabled -- meaning 7881 that 7882 the GPE is unknown to the system. This should prevent future interrupt 7883 floods 7884 from that GPE. BZ 6217 (Zhang Rui) 7885 7886 Fixed a problem where NULL package elements were not returned to the 7887 AcpiEvaluateObject interface correctly. The element was simply ignored 7888 instead of returning a NULL ACPI_OBJECT package element, potentially 7889 causing 7890 a buffer overflow and/or confusing the caller who expected a fixed number 7891 of 7892 elements. BZ 10132 (Lin Ming, Bob Moore) 7893 7894 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, 7895 Dword, 7896 Qword), Field, BankField, and IndexField operators when invoked from 7897 inside 7898 an executing control method. In this case, these operators created 7899 namespace 7900 nodes that were incorrectly left marked as permanent nodes instead of 7901 temporary nodes. This could cause a problem if there is race condition 7902 between an exiting control method and a running namespace walk. (Reported 7903 by 7904 Linn Crosetto) 7905 7906 Fixed a problem where the CreateField and CreateXXXField operators would 7907 incorrectly allow duplicate names (the name of the field) with no 7908 exception 7909 generated. 7910 7911 Implemented several changes for Notify handling. Added support for new 7912 Notify 7913 values (ACPI 2.0+) and improved the Notify debug output. Notify on 7914 PowerResource objects is no longer allowed, as per the ACPI 7915 specification. 7916 (Bob Moore, Zhang Rui) 7917 7918 All Reference Objects returned via the AcpiEvaluateObject interface are 7919 now 7920 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved 7921 for 7922 NULL objects - either NULL package elements or unresolved named 7923 references. 7924 7925 Fixed a problem where an extraneous debug message was produced for 7926 package 7927 objects (when debugging enabled). The message "Package List length larger 7928 than NumElements count" is now produced in the correct case, and is now 7929 an 7930 error message rather than a debug message. Added a debug message for the 7931 opposite case, where NumElements is larger than the Package List (the 7932 package 7933 will be padded out with NULL elements as per the ACPI spec.) 7934 7935 Implemented several improvements for the output of the ASL "Debug" object 7936 to 7937 clarify and keep all data for a given object on one output line. 7938 7939 Fixed two size calculation issues with the variable-length Start 7940 Dependent 7941 resource descriptor. 7942 7943 Example Code and Data Size: These are the sizes for the OS-independent 7944 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7945 debug version of the code includes the debug output trace mechanism and 7946 has 7947 a much larger code and data size. 7948 7949 Previous Release: 7950 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 7951 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 7952 Current Release: 7953 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 7954 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 7955 7956 2) iASL Compiler/Disassembler and Tools: 7957 7958 Fixed a problem with the use of the Switch operator where execution of 7959 the 7960 containing method by multiple concurrent threads could cause an 7961 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 7962 actual Switch opcode, it must be simulated with local named temporary 7963 variables and if/else pairs. The solution chosen was to mark any method 7964 that 7965 uses Switch as Serialized, thus preventing multiple thread entries. BZ 7966 469. 7967 7968 ---------------------------------------- 7969 13 February 2008. Summary of changes for version 20080213: 7970 7971 1) ACPI CA Core Subsystem: 7972 7973 Implemented another MS compatibility design change for GPE/Notify 7974 handling. 7975 GPEs are now cleared/enabled asynchronously to allow all pending notifies 7976 to 7977 complete first. It is expected that the OSL will queue the enable request 7978 behind all pending notify requests (may require changes to the local host 7979 OSL 7980 in AcpiOsExecute). Alexey Starikovskiy. 7981 7982 Fixed a problem where buffer and package objects passed as arguments to a 7983 control method via the external AcpiEvaluateObject interface could cause 7984 an 7985 AE_AML_INTERNAL exception depending on the order and type of operators 7986 executed by the target control method. 7987 7988 Fixed a problem where resource descriptor size optimization could cause a 7989 problem when a _CRS resource template is passed to a _SRS method. The 7990 _SRS 7991 resource template must use the same descriptors (with the same size) as 7992 returned from _CRS. This change affects the following resource 7993 descriptors: 7994 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 7995 9487) 7996 7997 Fixed a problem where a CopyObject to RegionField, BankField, and 7998 IndexField 7999 objects did not perform an implicit conversion as it should. These types 8000 must 8001 retain their initial type permanently as per the ACPI specification. 8002 However, 8003 a CopyObject to all other object types should not perform an implicit 8004 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 8005 8006 Fixed a problem with the AcpiGetDevices interface where the mechanism to 8007 match device CIDs did not examine the entire list of available CIDs, but 8008 instead aborted on the first non-matching CID. Andrew Patterson. 8009 8010 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro 8011 was 8012 inadvertently changed to return a 16-bit value instead of a 32-bit value, 8013 truncating the upper dword of a 64-bit value. This macro is only used to 8014 display debug output, so no incorrect calculations were made. Also, 8015 reimplemented the macro so that a 64-bit shift is not performed by 8016 inefficient compilers. 8017 8018 Added missing va_end statements that should correspond with each va_start 8019 statement. 8020 8021 Example Code and Data Size: These are the sizes for the OS-independent 8022 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8023 debug version of the code includes the debug output trace mechanism and 8024 has 8025 a much larger code and data size. 8026 8027 Previous Release: 8028 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 8029 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 8030 Current Release: 8031 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 8032 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 8033 8034 2) iASL Compiler/Disassembler and Tools: 8035 8036 Implemented full disassembler support for the following new ACPI tables: 8037 BERT, EINJ, and ERST. Implemented partial disassembler support for the 8038 complicated HEST table. These tables support the Windows Hardware Error 8039 Architecture (WHEA). 8040 8041 ---------------------------------------- 8042 23 January 2008. Summary of changes for version 20080123: 8043 8044 1) ACPI CA Core Subsystem: 8045 8046 Added the 2008 copyright to all module headers and signons. This affects 8047 virtually every file in the ACPICA core subsystem, the iASL compiler, and 8048 the tools/utilities. 8049 8050 Fixed a problem with the SizeOf operator when used with Package and 8051 Buffer 8052 objects. These objects have deferred execution for some arguments, and 8053 the 8054 execution is now completed before the SizeOf is executed. This problem 8055 caused 8056 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) 8057 BZ 8058 9558 8059 8060 Implemented an enhancement to the interpreter "slack mode". In the 8061 absence 8062 of 8063 an explicit return or an implicitly returned object from the last 8064 executed 8065 opcode, a control method will now implicitly return an integer of value 0 8066 for 8067 Microsoft compatibility. (Lin Ming) BZ 392 8068 8069 Fixed a problem with the Load operator where an exception was not 8070 returned 8071 in 8072 the case where the table is already loaded. (Lin Ming) BZ 463 8073 8074 Implemented support for the use of DDBHandles as an Indexed Reference, as 8075 per 8076 the ACPI spec. (Lin Ming) BZ 486 8077 8078 Implemented support for UserTerm (Method invocation) for the Unload 8079 operator 8080 as per the ACPI spec. (Lin Ming) BZ 580 8081 8082 Fixed a problem with the LoadTable operator where the OemId and 8083 OemTableId 8084 input strings could cause unexpected failures if they were shorter than 8085 the 8086 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 8087 8088 Implemented support for UserTerm (Method invocation) for the Unload 8089 operator 8090 as per the ACPI spec. (Lin Ming) BZ 580 8091 8092 Implemented header file support for new ACPI tables - BERT, ERST, EINJ, 8093 HEST, 8094 IBFT, UEFI, WDAT. Disassembler support is forthcoming. 8095 8096 Example Code and Data Size: These are the sizes for the OS-independent 8097 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8098 debug version of the code includes the debug output trace mechanism and 8099 has 8100 a much larger code and data size. 8101 8102 Previous Release: 8103 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 8104 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 8105 Current Release: 8106 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 8107 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 8108 8109 2) iASL Compiler/Disassembler and Tools: 8110 8111 Implemented support in the disassembler for checksum validation on 8112 incoming 8113 binary DSDTs and SSDTs. If incorrect, a message is displayed within the 8114 table 8115 header dump at the start of the disassembly. 8116 8117 Implemented additional debugging information in the namespace listing 8118 file 8119 created during compilation. In addition to the namespace hierarchy, the 8120 full 8121 pathname to each namespace object is displayed. 8122 8123 Fixed a problem with the disassembler where invalid ACPI tables could 8124 cause 8125 faults or infinite loops. 8126 8127 Fixed an unexpected parse error when using the optional "parameter types" 8128 list in a control method declaration. (Lin Ming) BZ 397 8129 8130 Fixed a problem where two External declarations with the same name did 8131 not 8132 cause an error (Lin Ming) BZ 509 8133 8134 Implemented support for full TermArgs (adding Argx, Localx and method 8135 invocation) for the ParameterData parameter to the LoadTable operator. 8136 (Lin 8137 Ming) BZ 583,587 8138 8139 ---------------------------------------- 8140 19 December 2007. Summary of changes for version 20071219: 8141 8142 1) ACPI CA Core Subsystem: 8143 8144 Implemented full support for deferred execution for the TermArg string 8145 arguments for DataTableRegion. This enables forward references and full 8146 operand resolution for the three string arguments. Similar to 8147 OperationRegion 8148 deferred argument execution.) Lin Ming. BZ 430 8149 8150 Implemented full argument resolution support for the BankValue argument 8151 to 8152 BankField. Previously, only constants were supported, now any TermArg may 8153 be 8154 used. Lin Ming BZ 387, 393 8155 8156 Fixed a problem with AcpiGetDevices where the search of a branch of the 8157 device tree could be terminated prematurely. In accordance with the ACPI 8158 specification, the search down the current branch is terminated if a 8159 device 8160 is both not present and not functional (instead of just not present.) 8161 Yakui 8162 Zhao. 8163 8164 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly 8165 if 8166 the underlying AML code changed the GPE enable registers. Now, any 8167 unknown 8168 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately 8169 disabled 8170 instead of simply ignored. Rui Zhang. 8171 8172 Fixed a problem with Index Fields where the Index register was 8173 incorrectly 8174 limited to a maximum of 32 bits. Now any size may be used. 8175 8176 Fixed a couple memory leaks associated with "implicit return" objects 8177 when 8178 the AML Interpreter slack mode is enabled. Lin Ming BZ 349 8179 8180 Example Code and Data Size: These are the sizes for the OS-independent 8181 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8182 debug version of the code includes the debug output trace mechanism and 8183 has 8184 a much larger code and data size. 8185 8186 Previous Release: 8187 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 8188 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 8189 Current Release: 8190 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 8191 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 8192 8193 ---------------------------------------- 8194 14 November 2007. Summary of changes for version 20071114: 8195 8196 1) ACPI CA Core Subsystem: 8197 8198 Implemented event counters for each of the Fixed Events, the ACPI SCI 8199 (interrupt) itself, and control methods executed. Named 8200 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. 8201 These 8202 should be useful for debugging and statistics. 8203 8204 Implemented a new external interface, AcpiGetStatistics, to retrieve the 8205 contents of the various event counters. Returns the current values for 8206 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 8207 AcpiMethodCount. The interface can be expanded in the future if new 8208 counters 8209 are added. Device drivers should use this interface rather than access 8210 the 8211 counters directly. 8212 8213 Fixed a problem with the FromBCD and ToBCD operators. With some 8214 compilers, 8215 the ShortDivide function worked incorrectly, causing problems with the 8216 BCD 8217 functions with large input values. A truncation from 64-bit to 32-bit 8218 inadvertently occurred. Internal BZ 435. Lin Ming 8219 8220 Fixed a problem with Index references passed as method arguments. 8221 References 8222 passed as arguments to control methods were dereferenced immediately 8223 (before 8224 control was passed to the called method). The references are now 8225 correctly 8226 passed directly to the called method. BZ 5389. Lin Ming 8227 8228 Fixed a problem with CopyObject used in conjunction with the Index 8229 operator. 8230 The reference was incorrectly dereferenced before the copy. The reference 8231 is 8232 now correctly copied. BZ 5391. Lin Ming 8233 8234 Fixed a problem with Control Method references within Package objects. 8235 These 8236 references are now correctly generated. This completes the package 8237 construction overhaul that began in version 20071019. 8238 8239 Example Code and Data Size: These are the sizes for the OS-independent 8240 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8241 debug version of the code includes the debug output trace mechanism and 8242 has 8243 a much larger code and data size. 8244 8245 Previous Release: 8246 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 8247 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 8248 Current Release: 8249 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 8250 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 8251 8252 8253 2) iASL Compiler/Disassembler and Tools: 8254 8255 The AcpiExec utility now installs handlers for all of the predefined 8256 Operation Region types. New types supported are: PCI_Config, CMOS, and 8257 PCIBARTarget. 8258 8259 Fixed a problem with the 64-bit version of AcpiExec where the extended 8260 (64- 8261 bit) address fields for the DSDT and FACS within the FADT were not being 8262 used, causing truncation of the upper 32-bits of these addresses. Lin 8263 Ming 8264 and Bob Moore 8265 8266 ---------------------------------------- 8267 19 October 2007. Summary of changes for version 20071019: 8268 8269 1) ACPI CA Core Subsystem: 8270 8271 Fixed a problem with the Alias operator when the target of the alias is a 8272 named ASL operator that opens a new scope -- Scope, Device, 8273 PowerResource, 8274 Processor, and ThermalZone. In these cases, any children of the original 8275 operator could not be accessed via the alias, potentially causing 8276 unexpected 8277 AE_NOT_FOUND exceptions. (BZ 9067) 8278 8279 Fixed a problem with the Package operator where all named references were 8280 created as object references and left otherwise unresolved. According to 8281 the 8282 ACPI specification, a Package can only contain Data Objects or references 8283 to 8284 control methods. The implication is that named references to Data Objects 8285 (Integer, Buffer, String, Package, BufferField, Field) should be resolved 8286 immediately upon package creation. This is the approach taken with this 8287 change. References to all other named objects (Methods, Devices, Scopes, 8288 etc.) are all now properly created as reference objects. (BZ 5328) 8289 8290 Reverted a change to Notify handling that was introduced in version 8291 20070508. This version changed the Notify handling from asynchronous to 8292 fully synchronous (Device driver Notify handling with respect to the 8293 Notify 8294 ASL operator). It was found that this change caused more problems than it 8295 solved and was removed by most users. 8296 8297 Fixed a problem with the Increment and Decrement operators where the type 8298 of 8299 the target object could be unexpectedly and incorrectly changed. (BZ 353) 8300 Lin Ming. 8301 8302 Fixed a problem with the Load and LoadTable operators where the table 8303 location within the namespace was ignored. Instead, the table was always 8304 loaded into the root or current scope. Lin Ming. 8305 8306 Fixed a problem with the Load operator when loading a table from a buffer 8307 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 8308 8309 Fixed a problem with the Debug object where a store of a DdbHandle 8310 reference 8311 object to the Debug object could cause a fault. 8312 8313 Added a table checksum verification for the Load operator, in the case 8314 where 8315 the load is from a buffer. (BZ 578). 8316 8317 Implemented additional parameter validation for the LoadTable operator. 8318 The 8319 length of the input strings SignatureString, OemIdString, and OemTableId 8320 are 8321 now checked for maximum lengths. (BZ 582) Lin Ming. 8322 8323 Example Code and Data Size: These are the sizes for the OS-independent 8324 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8325 debug version of the code includes the debug output trace mechanism and 8326 has 8327 a much larger code and data size. 8328 8329 Previous Release: 8330 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 8331 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 8332 Current Release: 8333 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 8334 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 8335 8336 8337 2) iASL Compiler/Disassembler: 8338 8339 Fixed a problem where if a single file was specified and the file did not 8340 exist, no error message was emitted. (Introduced with wildcard support in 8341 version 20070917.) 8342 8343 ---------------------------------------- 8344 19 September 2007. Summary of changes for version 20070919: 8345 8346 1) ACPI CA Core Subsystem: 8347 8348 Designed and implemented new external interfaces to install and remove 8349 handlers for ACPI table-related events. Current events that are defined 8350 are 8351 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 8352 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 8353 AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 8354 8355 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 8356 (acpi_serialized option on Linux) could cause some systems to hang during 8357 initialization. (Bob Moore) BZ 8171 8358 8359 Fixed a problem where objects of certain types (Device, ThermalZone, 8360 Processor, PowerResource) can be not found if they are declared and 8361 referenced from within the same control method (Lin Ming) BZ 341 8362 8363 Example Code and Data Size: These are the sizes for the OS-independent 8364 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8365 debug version of the code includes the debug output trace mechanism and 8366 has 8367 a much larger code and data size. 8368 8369 Previous Release: 8370 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 8371 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 8372 Current Release: 8373 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 8374 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 8375 8376 8377 2) iASL Compiler/Disassembler: 8378 8379 Implemented support to allow multiple files to be compiled/disassembled 8380 in 8381 a 8382 single invocation. This includes command line wildcard support for both 8383 the 8384 Windows and Unix versions of the compiler. This feature simplifies the 8385 disassembly and compilation of multiple ACPI tables in a single 8386 directory. 8387 8388 ---------------------------------------- 8389 08 May 2007. Summary of changes for version 20070508: 8390 8391 1) ACPI CA Core Subsystem: 8392 8393 Implemented a Microsoft compatibility design change for the handling of 8394 the 8395 Notify AML operator. Previously, notify handlers were dispatched and 8396 executed completely asynchronously in a deferred thread. The new design 8397 still executes the notify handlers in a different thread, but the 8398 original 8399 thread that executed the Notify() now waits at a synchronization point 8400 for 8401 the notify handler to complete. Some machines depend on a synchronous 8402 Notify 8403 operator in order to operate correctly. 8404 8405 Implemented support to allow Package objects to be passed as method 8406 arguments to the external AcpiEvaluateObject interface. Previously, this 8407 would return the AE_NOT_IMPLEMENTED exception. This feature had not been 8408 implemented since there were no reserved control methods that required it 8409 until recently. 8410 8411 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs 8412 that 8413 contained invalid non-zero values in reserved fields could cause later 8414 failures because these fields have meaning in later revisions of the 8415 FADT. 8416 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The 8417 fields 8418 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 8419 8420 Fixed a problem where the Global Lock handle was not properly updated if 8421 a 8422 thread that acquired the Global Lock via executing AML code then 8423 attempted 8424 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by 8425 Joe 8426 Liu. 8427 8428 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 8429 could be corrupted if the interrupt being removed was at the head of the 8430 list. Reported by Linn Crosetto. 8431 8432 Example Code and Data Size: These are the sizes for the OS-independent 8433 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8434 debug version of the code includes the debug output trace mechanism and 8435 has 8436 a much larger code and data size. 8437 8438 Previous Release: 8439 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8440 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 8441 Current Release: 8442 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 8443 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 8444 8445 ---------------------------------------- 8446 20 March 2007. Summary of changes for version 20070320: 8447 8448 1) ACPI CA Core Subsystem: 8449 8450 Implemented a change to the order of interpretation and evaluation of AML 8451 operand objects within the AML interpreter. The interpreter now evaluates 8452 operands in the order that they appear in the AML stream (and the 8453 corresponding ASL code), instead of in the reverse order (after the 8454 entire 8455 operand list has been parsed). The previous behavior caused several 8456 subtle 8457 incompatibilities with the Microsoft AML interpreter as well as being 8458 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 8459 8460 Implemented a change to the ACPI Global Lock support. All interfaces to 8461 the 8462 global lock now allow the same thread to acquire the lock multiple times. 8463 This affects the AcpiAcquireGlobalLock external interface to the global 8464 lock 8465 as well as the internal use of the global lock to support AML fields -- a 8466 control method that is holding the global lock can now simultaneously 8467 access 8468 AML fields that require global lock protection. Previously, in both 8469 cases, 8470 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change 8471 to 8472 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 8473 Controller. There is no change to the behavior of the AML Acquire 8474 operator, 8475 as this can already be used to acquire a mutex multiple times by the same 8476 thread. BZ 8066. With assistance from Alexey Starikovskiy. 8477 8478 Fixed a problem where invalid objects could be referenced in the AML 8479 Interpreter after error conditions. During operand evaluation, ensure 8480 that 8481 the internal "Return Object" field is cleared on error and only valid 8482 pointers are stored there. Caused occasional access to deleted objects 8483 that 8484 resulted in "large reference count" warning messages. Valery Podrezov. 8485 8486 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur 8487 on 8488 deeply nested control method invocations. BZ 7873, local BZ 487. Valery 8489 Podrezov. 8490 8491 Fixed an internal problem with the handling of result objects on the 8492 interpreter result stack. BZ 7872. Valery Podrezov. 8493 8494 Removed obsolete code that handled the case where AML_NAME_OP is the 8495 target 8496 of a reference (Reference.Opcode). This code was no longer necessary. BZ 8497 7874. Valery Podrezov. 8498 8499 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This 8500 was 8501 a 8502 remnant from the previously discontinued 16-bit support. 8503 8504 Example Code and Data Size: These are the sizes for the OS-independent 8505 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8506 debug version of the code includes the debug output trace mechanism and 8507 has 8508 a much larger code and data size. 8509 8510 Previous Release: 8511 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8512 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 8513 Current Release: 8514 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8515 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 8516 8517 ---------------------------------------- 8518 26 January 2007. Summary of changes for version 20070126: 8519 8520 1) ACPI CA Core Subsystem: 8521 8522 Added the 2007 copyright to all module headers and signons. This affects 8523 virtually every file in the ACPICA core subsystem, the iASL compiler, and 8524 the utilities. 8525 8526 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 8527 during a table load. A bad pointer was passed in the case where the DSDT 8528 is 8529 overridden, causing a fault in this case. 8530 8531 Example Code and Data Size: These are the sizes for the OS-independent 8532 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8533 debug version of the code includes the debug output trace mechanism and 8534 has 8535 a much larger code and data size. 8536 8537 Previous Release: 8538 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8539 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 8540 Current Release: 8541 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8542 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 8543 8544 ---------------------------------------- 8545 15 December 2006. Summary of changes for version 20061215: 8546 8547 1) ACPI CA Core Subsystem: 8548 8549 Support for 16-bit ACPICA has been completely removed since it is no 8550 longer 8551 necessary and it clutters the code. All 16-bit macros, types, and 8552 conditional compiles have been removed, cleaning up and simplifying the 8553 code 8554 across the entire subsystem. DOS support is no longer needed since the 8555 bootable Linux firmware kit is now available. 8556 8557 The handler for the Global Lock is now removed during AcpiTerminate to 8558 enable a clean subsystem restart, via the implementation of the 8559 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 8560 HP) 8561 8562 Implemented enhancements to the multithreading support within the 8563 debugger 8564 to enable improved multithreading debugging and evaluation of the 8565 subsystem. 8566 (Valery Podrezov) 8567 8568 Debugger: Enhanced the Statistics/Memory command to emit the total 8569 (maximum) 8570 memory used during the execution, as well as the maximum memory consumed 8571 by 8572 each of the various object types. (Valery Podrezov) 8573 8574 Example Code and Data Size: These are the sizes for the OS-independent 8575 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8576 debug version of the code includes the debug output trace mechanism and 8577 has 8578 a much larger code and data size. 8579 8580 Previous Release: 8581 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 8582 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 8583 Current Release: 8584 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8585 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 8586 8587 8588 2) iASL Compiler/Disassembler and Tools: 8589 8590 AcpiExec: Implemented a new option (-m) to display full memory use 8591 statistics upon subsystem/program termination. (Valery Podrezov) 8592 8593 ---------------------------------------- 8594 09 November 2006. Summary of changes for version 20061109: 8595 8596 1) ACPI CA Core Subsystem: 8597 8598 Optimized the Load ASL operator in the case where the source operand is 8599 an 8600 operation region. Simply map the operation region memory, instead of 8601 performing a bytewise read. (Region must be of type SystemMemory, see 8602 below.) 8603 8604 Fixed the Load ASL operator for the case where the source operand is a 8605 region field. A buffer object is also allowed as the source operand. BZ 8606 480 8607 8608 Fixed a problem where the Load ASL operator allowed the source operand to 8609 be 8610 an operation region of any type. It is now restricted to regions of type 8611 SystemMemory, as per the ACPI specification. BZ 481 8612 8613 Additional cleanup and optimizations for the new Table Manager code. 8614 8615 AcpiEnable will now fail if all of the required ACPI tables are not 8616 loaded 8617 (FADT, FACS, DSDT). BZ 477 8618 8619 Added #pragma pack(8/4) to acobject.h to ensure that the structures in 8620 this 8621 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 8622 manually optimized to be aligned and will not work if it is byte-packed. 8623 8624 Example Code and Data Size: These are the sizes for the OS-independent 8625 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8626 debug version of the code includes the debug output trace mechanism and 8627 has 8628 a much larger code and data size. 8629 8630 Previous Release: 8631 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 8632 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 8633 Current Release: 8634 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 8635 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 8636 8637 8638 2) iASL Compiler/Disassembler and Tools: 8639 8640 Fixed a problem where the presence of the _OSI predefined control method 8641 within complex expressions could cause an internal compiler error. 8642 8643 AcpiExec: Implemented full region support for multiple address spaces. 8644 SpaceId is now part of the REGION object. BZ 429 8645 8646 ---------------------------------------- 8647 11 October 2006. Summary of changes for version 20061011: 8648 8649 1) ACPI CA Core Subsystem: 8650 8651 Completed an AML interpreter performance enhancement for control method 8652 execution. Previously a 2-pass parse/execution, control methods are now 8653 completely parsed and executed in a single pass. This improves overall 8654 interpreter performance by ~25%, reduces code size, and reduces CPU stack 8655 use. (Valery Podrezov + interpreter changes in version 20051202 that 8656 eliminated namespace loading during the pass one parse.) 8657 8658 Implemented _CID support for PCI Root Bridge detection. If the _HID does 8659 not 8660 match the predefined PCI Root Bridge IDs, the _CID list (if present) is 8661 now 8662 obtained and also checked for an ID match. 8663 8664 Implemented additional support for the PCI _ADR execution: upsearch until 8665 a 8666 device scope is found before executing _ADR. This allows PCI_Config 8667 operation regions to be declared locally within control methods 8668 underneath 8669 PCI device objects. 8670 8671 Fixed a problem with a possible race condition between threads executing 8672 AcpiWalkNamespace and the AML interpreter. This condition was removed by 8673 modifying AcpiWalkNamespace to (by default) ignore all temporary 8674 namespace 8675 entries created during any concurrent control method execution. An 8676 additional namespace race condition is known to exist between 8677 AcpiWalkNamespace and the Load/Unload ASL operators and is still under 8678 investigation. 8679 8680 Restructured the AML ParseLoop function, breaking it into several 8681 subfunctions in order to reduce CPU stack use and improve 8682 maintainability. 8683 (Mikhail Kouzmich) 8684 8685 AcpiGetHandle: Fix for parameter validation to detect invalid 8686 combinations 8687 of prefix handle and pathname. BZ 478 8688 8689 Example Code and Data Size: These are the sizes for the OS-independent 8690 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8691 debug version of the code includes the debug output trace mechanism and 8692 has 8693 a much larger code and data size. 8694 8695 Previous Release: 8696 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 8697 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 8698 Current Release: 8699 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 8700 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 8701 8702 2) iASL Compiler/Disassembler and Tools: 8703 8704 Ported the -g option (get local ACPI tables) to the new ACPICA Table 8705 Manager 8706 to restore original behavior. 8707 8708 ---------------------------------------- 8709 27 September 2006. Summary of changes for version 20060927: 8710 8711 1) ACPI CA Core Subsystem: 8712 8713 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 8714 These functions now use a spinlock for mutual exclusion and the interrupt 8715 level indication flag is not needed. 8716 8717 Fixed a problem with the Global Lock where the lock could appear to be 8718 obtained before it is actually obtained. The global lock semaphore was 8719 inadvertently created with one unit instead of zero units. (BZ 464) 8720 Fiodor 8721 Suietov. 8722 8723 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue 8724 during 8725 a read from a buffer or region field. (BZ 458) Fiodor Suietov. 8726 8727 Example Code and Data Size: These are the sizes for the OS-independent 8728 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8729 debug version of the code includes the debug output trace mechanism and 8730 has 8731 a much larger code and data size. 8732 8733 Previous Release: 8734 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 8735 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 8736 Current Release: 8737 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 8738 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 8739 8740 8741 2) iASL Compiler/Disassembler and Tools: 8742 8743 Fixed a compilation problem with the pre-defined Resource Descriptor 8744 field 8745 names where an "object does not exist" error could be incorrectly 8746 generated 8747 if the parent ResourceTemplate pathname places the template within a 8748 different namespace scope than the current scope. (BZ 7212) 8749 8750 Fixed a problem where the compiler could hang after syntax errors 8751 detected 8752 in an ElseIf construct. (BZ 453) 8753 8754 Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 8755 operator. An incorrect output filename was produced when this parameter 8756 was 8757 a null string (""). Now, the original input filename is used as the AML 8758 output filename, with an ".aml" extension. 8759 8760 Implemented a generic batch command mode for the AcpiExec utility 8761 (execute 8762 any AML debugger command) (Valery Podrezov). 8763 8764 ---------------------------------------- 8765 12 September 2006. Summary of changes for version 20060912: 8766 8767 1) ACPI CA Core Subsystem: 8768 8769 Enhanced the implementation of the "serialized mode" of the interpreter 8770 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 8771 specified, instead of creating a serialization semaphore per control 8772 method, 8773 the interpreter lock is simply no longer released before a blocking 8774 operation during control method execution. This effectively makes the AML 8775 Interpreter single-threaded. The overhead of a semaphore per-method is 8776 eliminated. 8777 8778 Fixed a regression where an error was no longer emitted if a control 8779 method 8780 attempts to create 2 objects of the same name. This once again returns 8781 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism 8782 that 8783 will dynamically serialize the control method to possible prevent future 8784 errors. (BZ 440) 8785 8786 Integrated a fix for a problem with PCI Express HID detection in the PCI 8787 Config Space setup procedure. (BZ 7145) 8788 8789 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 8790 AcpiHwInitialize function - the FADT registers are now validated when the 8791 table is loaded. 8792 8793 Added two new warnings during FADT verification - 1) if the FADT is 8794 larger 8795 than the largest known FADT version, and 2) if there is a mismatch 8796 between 8797 a 8798 32-bit block address and the 64-bit X counterpart (when both are non- 8799 zero.) 8800 8801 Example Code and Data Size: These are the sizes for the OS-independent 8802 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8803 debug version of the code includes the debug output trace mechanism and 8804 has 8805 a much larger code and data size. 8806 8807 Previous Release: 8808 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 8809 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 8810 Current Release: 8811 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 8812 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 8813 8814 8815 2) iASL Compiler/Disassembler and Tools: 8816 8817 Fixed a problem with the implementation of the Switch() operator where 8818 the 8819 temporary variable was declared too close to the actual Switch, instead 8820 of 8821 at method level. This could cause a problem if the Switch() operator is 8822 within a while loop, causing an error on the second iteration. (BZ 460) 8823 8824 Disassembler - fix for error emitted for unknown type for target of scope 8825 operator. Now, ignore it and continue. 8826 8827 Disassembly of an FADT now verifies the input FADT and reports any errors 8828 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 8829 8830 Disassembly of raw data buffers with byte initialization data now 8831 prefixes 8832 each output line with the current buffer offset. 8833 8834 Disassembly of ASF! table now includes all variable-length data fields at 8835 the end of some of the subtables. 8836 8837 The disassembler now emits a comment if a buffer appears to be a 8838 ResourceTemplate, but cannot be disassembled as such because the EndTag 8839 does 8840 not appear at the very end of the buffer. 8841 8842 AcpiExec - Added the "-t" command line option to enable the serialized 8843 mode 8844 of the AML interpreter. 8845 8846 ---------------------------------------- 8847 31 August 2006. Summary of changes for version 20060831: 8848 8849 1) ACPI CA Core Subsystem: 8850 8851 Miscellaneous fixes for the Table Manager: 8852 - Correctly initialize internal common FADT for all 64-bit "X" fields 8853 - Fixed a couple table mapping issues during table load 8854 - Fixed a couple alignment issues for IA64 8855 - Initialize input array to zero in AcpiInitializeTables 8856 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 8857 AcpiGetTableByIndex 8858 8859 Change for GPE support: when a "wake" GPE is received, all wake GPEs are 8860 now 8861 immediately disabled to prevent the waking GPE from firing again and to 8862 prevent other wake GPEs from interrupting the wake process. 8863 8864 Added the AcpiGpeCount global that tracks the number of processed GPEs, 8865 to 8866 be used for debugging systems with a large number of ACPI interrupts. 8867 8868 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 8869 both the ACPICA headers and the disassembler. 8870 8871 Example Code and Data Size: These are the sizes for the OS-independent 8872 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8873 debug version of the code includes the debug output trace mechanism and 8874 has 8875 a much larger code and data size. 8876 8877 Previous Release: 8878 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 8879 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 8880 Current Release: 8881 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 8882 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 8883 8884 8885 2) iASL Compiler/Disassembler and Tools: 8886 8887 Disassembler support for the DMAR ACPI table. 8888 8889 ---------------------------------------- 8890 23 August 2006. Summary of changes for version 20060823: 8891 8892 1) ACPI CA Core Subsystem: 8893 8894 The Table Manager component has been completely redesigned and 8895 reimplemented. The new design is much simpler, and reduces the overall 8896 code 8897 and data size of the kernel-resident ACPICA by approximately 5%. Also, it 8898 is 8899 now possible to obtain the ACPI tables very early during kernel 8900 initialization, even before dynamic memory management is initialized. 8901 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 8902 8903 Obsolete ACPICA interfaces: 8904 8905 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel 8906 init 8907 time). 8908 - AcpiLoadTable: Not needed. 8909 - AcpiUnloadTable: Not needed. 8910 8911 New ACPICA interfaces: 8912 8913 - AcpiInitializeTables: Must be called before the table manager can be 8914 used. 8915 - AcpiReallocateRootTable: Used to transfer the root table to dynamically 8916 allocated memory after it becomes available. 8917 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI 8918 tables 8919 in the RSDT/XSDT. 8920 8921 Other ACPICA changes: 8922 8923 - AcpiGetTableHeader returns the actual mapped table header, not a copy. 8924 Use 8925 AcpiOsUnmapMemory to free this mapping. 8926 - AcpiGetTable returns the actual mapped table. The mapping is managed 8927 internally and must not be deleted by the caller. Use of this interface 8928 causes no additional dynamic memory allocation. 8929 - AcpiFindRootPointer: Support for physical addressing has been 8930 eliminated, 8931 it appeared to be unused. 8932 - The interface to AcpiOsMapMemory has changed to be consistent with the 8933 other allocation interfaces. 8934 - The interface to AcpiOsGetRootPointer has changed to eliminate 8935 unnecessary 8936 parameters. 8937 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 8938 64- 8939 bit platforms. Was previously 64 bits on all platforms. 8940 - The interface to the ACPI Global Lock acquire/release macros have 8941 changed 8942 slightly since ACPICA no longer keeps a local copy of the FACS with a 8943 constructed pointer to the actual global lock. 8944 8945 Porting to the new table manager: 8946 8947 - AcpiInitializeTables: Must be called once, and can be called anytime 8948 during the OS initialization process. It allows the host to specify an 8949 area 8950 of memory to be used to store the internal version of the RSDT/XSDT (root 8951 table). This allows the host to access ACPI tables before memory 8952 management 8953 is initialized and running. 8954 - AcpiReallocateRootTable: Can be called after memory management is 8955 running 8956 to copy the root table to a dynamically allocated array, freeing up the 8957 scratch memory specified in the call to AcpiInitializeTables. 8958 - AcpiSubsystemInitialize: This existing interface is independent of the 8959 Table Manager, and does not have to be called before the Table Manager 8960 can 8961 be used, it only must be called before the rest of ACPICA can be used. 8962 - ACPI Tables: Some changes have been made to the names and structure of 8963 the 8964 actbl.h and actbl1.h header files and may require changes to existing 8965 code. 8966 For example, bitfields have been completely removed because of their lack 8967 of 8968 portability across C compilers. 8969 - Update interfaces to the Global Lock acquire/release macros if local 8970 versions are used. (see acwin.h) 8971 8972 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 8973 8974 New files: tbfind.c 8975 8976 Example Code and Data Size: These are the sizes for the OS-independent 8977 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8978 debug version of the code includes the debug output trace mechanism and 8979 has 8980 a much larger code and data size. 8981 8982 Previous Release: 8983 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 8984 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 8985 Current Release: 8986 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 8987 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 8988 8989 8990 2) iASL Compiler/Disassembler and Tools: 8991 8992 No changes for this release. 8993 8994 ---------------------------------------- 8995 21 July 2006. Summary of changes for version 20060721: 8996 8997 1) ACPI CA Core Subsystem: 8998 8999 The full source code for the ASL test suite used to validate the iASL 9000 compiler and the ACPICA core subsystem is being released with the ACPICA 9001 source for the first time. The source is contained in a separate package 9002 and 9003 consists of over 1100 files that exercise all ASL/AML operators. The 9004 package 9005 should appear on the Intel/ACPI web site shortly. (Valery Podrezov, 9006 Fiodor 9007 Suietov) 9008 9009 Completed a new design and implementation for support of the ACPI Global 9010 Lock. On the OS side, the global lock is now treated as a standard AML 9011 mutex. Previously, multiple OS threads could "acquire" the global lock 9012 simultaneously. However, this could cause the BIOS to be starved out of 9013 the 9014 lock - especially in cases such as the Embedded Controller driver where 9015 there is a tight coupling between the OS and the BIOS. 9016 9017 Implemented an optimization for the ACPI Global Lock interrupt mechanism. 9018 The Global Lock interrupt handler no longer queues the execution of a 9019 separate thread to signal the global lock semaphore. Instead, the 9020 semaphore 9021 is signaled directly from the interrupt handler. 9022 9023 Implemented support within the AML interpreter for package objects that 9024 contain a larger AML length (package list length) than the package 9025 element 9026 count. In this case, the length of the package is truncated to match the 9027 package element count. Some BIOS code apparently modifies the package 9028 length 9029 on the fly, and this change supports this behavior. Provides 9030 compatibility 9031 with the MS AML interpreter. (With assistance from Fiodor Suietov) 9032 9033 Implemented a temporary fix for the BankValue parameter of a Bank Field 9034 to 9035 support all constant values, now including the Zero and One opcodes. 9036 Evaluation of this parameter must eventually be converted to a full 9037 TermArg 9038 evaluation. A not-implemented error is now returned (temporarily) for 9039 non- 9040 constant values for this parameter. 9041 9042 Fixed problem reports (Fiodor Suietov) integrated: 9043 - Fix for premature object deletion after CopyObject on Operation Region 9044 (BZ 9045 350) 9046 9047 Example Code and Data Size: These are the sizes for the OS-independent 9048 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9049 debug version of the code includes the debug output trace mechanism and 9050 has 9051 a much larger code and data size. 9052 9053 Previous Release: 9054 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 9055 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 9056 Current Release: 9057 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 9058 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 9059 9060 9061 2) iASL Compiler/Disassembler and Tools: 9062 9063 No changes for this release. 9064 9065 ---------------------------------------- 9066 07 July 2006. Summary of changes for version 20060707: 9067 9068 1) ACPI CA Core Subsystem: 9069 9070 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 9071 that do not allow the initialization of address pointers within packed 9072 structures - even though the hardware itself may support misaligned 9073 transfers. Some of the debug data structures are packed by default to 9074 minimize size. 9075 9076 Added an error message for the case where AcpiOsGetThreadId() returns 9077 zero. 9078 A non-zero value is required by the core ACPICA code to ensure the proper 9079 operation of AML mutexes and recursive control methods. 9080 9081 The DSDT is now the only ACPI table that determines whether the AML 9082 interpreter is in 32-bit or 64-bit mode. Not really a functional change, 9083 but 9084 the hooks for per-table 32/64 switching have been removed from the code. 9085 A 9086 clarification to the ACPI specification is forthcoming in ACPI 3.0B. 9087 9088 Fixed a possible leak of an OwnerID in the error path of 9089 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 9090 deletion to a single place in AcpiTbUninstallTable to correct possible 9091 leaks 9092 when using the AcpiTbDeleteTablesByType interface (with assistance from 9093 Lance Ortiz.) 9094 9095 Fixed a problem with Serialized control methods where the semaphore 9096 associated with the method could be over-signaled after multiple method 9097 invocations. 9098 9099 Fixed two issues with the locking of the internal namespace data 9100 structure. 9101 Both the Unload() operator and AcpiUnloadTable interface now lock the 9102 namespace during the namespace deletion associated with the table unload 9103 (with assistance from Linn Crosetto.) 9104 9105 Fixed problem reports (Valery Podrezov) integrated: 9106 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 9107 9108 Fixed problem reports (Fiodor Suietov) integrated: 9109 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 9110 - On Address Space handler deletion, needless deactivation call (BZ 374) 9111 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 9112 375) 9113 - Possible memory leak, Notify sub-objects of Processor, Power, 9114 ThermalZone 9115 (BZ 376) 9116 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 9117 - Minimum Length of RSDT should be validated (BZ 379) 9118 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 9119 Handler (BZ (380) 9120 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type 9121 loaded 9122 (BZ 381) 9123 9124 Example Code and Data Size: These are the sizes for the OS-independent 9125 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9126 debug version of the code includes the debug output trace mechanism and 9127 has 9128 a much larger code and data size. 9129 9130 Previous Release: 9131 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 9132 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 9133 Current Release: 9134 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 9135 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 9136 9137 9138 2) iASL Compiler/Disassembler and Tools: 9139 9140 Fixed problem reports: 9141 Compiler segfault when ASL contains a long (>1024) String declaration (BZ 9142 436) 9143 9144 ---------------------------------------- 9145 23 June 2006. Summary of changes for version 20060623: 9146 9147 1) ACPI CA Core Subsystem: 9148 9149 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 9150 allows the type to be customized to the host OS for improved efficiency 9151 (since a spinlock is usually a very small object.) 9152 9153 Implemented support for "ignored" bits in the ACPI registers. According 9154 to 9155 the ACPI specification, these bits should be preserved when writing the 9156 registers via a read/modify/write cycle. There are 3 bits preserved in 9157 this 9158 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 9159 9160 Implemented the initial deployment of new OSL mutex interfaces. Since 9161 some 9162 host operating systems have separate mutex and semaphore objects, this 9163 feature was requested. The base code now uses mutexes (and the new mutex 9164 interfaces) wherever a binary semaphore was used previously. However, for 9165 the current release, the mutex interfaces are defined as macros to map 9166 them 9167 to the existing semaphore interfaces. Therefore, no OSL changes are 9168 required 9169 at this time. (See acpiosxf.h) 9170 9171 Fixed several problems with the support for the control method SyncLevel 9172 parameter. The SyncLevel now works according to the ACPI specification 9173 and 9174 in concert with the Mutex SyncLevel parameter, since the current 9175 SyncLevel 9176 is a property of the executing thread. Mutual exclusion for control 9177 methods 9178 is now implemented with a mutex instead of a semaphore. 9179 9180 Fixed three instances of the use of the C shift operator in the bitfield 9181 support code (exfldio.c) to avoid the use of a shift value larger than 9182 the 9183 target data width. The behavior of C compilers is undefined in this case 9184 and 9185 can cause unpredictable results, and therefore the case must be detected 9186 and 9187 avoided. (Fiodor Suietov) 9188 9189 Added an info message whenever an SSDT or OEM table is loaded dynamically 9190 via the Load() or LoadTable() ASL operators. This should improve 9191 debugging 9192 capability since it will show exactly what tables have been loaded 9193 (beyond 9194 the tables present in the RSDT/XSDT.) 9195 9196 Example Code and Data Size: These are the sizes for the OS-independent 9197 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9198 debug version of the code includes the debug output trace mechanism and 9199 has 9200 a much larger code and data size. 9201 9202 Previous Release: 9203 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 9204 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 9205 Current Release: 9206 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 9207 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 9208 9209 9210 2) iASL Compiler/Disassembler and Tools: 9211 9212 No changes for this release. 9213 9214 ---------------------------------------- 9215 08 June 2006. Summary of changes for version 20060608: 9216 9217 1) ACPI CA Core Subsystem: 9218 9219 Converted the locking mutex used for the ACPI hardware to a spinlock. 9220 This 9221 change should eliminate all problems caused by attempting to acquire a 9222 semaphore at interrupt level, and it means that all ACPICA external 9223 interfaces that directly access the ACPI hardware can be safely called 9224 from 9225 interrupt level. OSL code that implements the semaphore interfaces should 9226 be 9227 able to eliminate any workarounds for being called at interrupt level. 9228 9229 Fixed a regression introduced in 20060526 where the ACPI device 9230 initialization could be prematurely aborted with an AE_NOT_FOUND if a 9231 device 9232 did not have an optional _INI method. 9233 9234 Fixed an IndexField issue where a write to the Data Register should be 9235 limited in size to the AccessSize (width) of the IndexField itself. (BZ 9236 433, 9237 Fiodor Suietov) 9238 9239 Fixed problem reports (Valery Podrezov) integrated: 9240 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 9241 9242 Fixed problem reports (Fiodor Suietov) integrated: 9243 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 9244 9245 Removed four global mutexes that were obsolete and were no longer being 9246 used. 9247 9248 Example Code and Data Size: These are the sizes for the OS-independent 9249 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9250 debug version of the code includes the debug output trace mechanism and 9251 has 9252 a much larger code and data size. 9253 9254 Previous Release: 9255 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 9256 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 9257 Current Release: 9258 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 9259 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 9260 9261 9262 2) iASL Compiler/Disassembler and Tools: 9263 9264 Fixed a fault when using -g option (get tables from registry) on Windows 9265 machines. 9266 9267 Fixed problem reports integrated: 9268 - Generate error if CreateField NumBits parameter is zero. (BZ 405) 9269 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 9270 Suietov) 9271 - Global table revision override (-r) is ignored (BZ 413) 9272 9273 ---------------------------------------- 9274 26 May 2006. Summary of changes for version 20060526: 9275 9276 1) ACPI CA Core Subsystem: 9277 9278 Restructured, flattened, and simplified the internal interfaces for 9279 namespace object evaluation - resulting in smaller code, less CPU stack 9280 use, 9281 and fewer interfaces. (With assistance from Mikhail Kouzmich) 9282 9283 Fixed a problem with the CopyObject operator where the first parameter 9284 was 9285 not typed correctly for the parser, interpreter, compiler, and 9286 disassembler. 9287 Caused various errors and unexpected behavior. 9288 9289 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 9290 produced incorrect results with some C compilers. Since the behavior of C 9291 compilers when the shift value is larger than the datatype width is 9292 apparently not well defined, the interpreter now detects this condition 9293 and 9294 simply returns zero as expected in all such cases. (BZ 395) 9295 9296 Fixed problem reports (Valery Podrezov) integrated: 9297 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 9298 - Allow interpreter to handle nested method declarations (BZ 5361) 9299 9300 Fixed problem reports (Fiodor Suietov) integrated: 9301 - AcpiTerminate doesn't free debug memory allocation list objects (BZ 9302 355) 9303 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 9304 356) 9305 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 9306 - Resource Manager should return AE_TYPE for non-device objects (BZ 358) 9307 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 9308 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 9309 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 9310 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 9311 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 9312 365) 9313 - Status of the Global Initialization Handler call not used (BZ 366) 9314 - Incorrect object parameter to Global Initialization Handler (BZ 367) 9315 9316 Example Code and Data Size: These are the sizes for the OS-independent 9317 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9318 debug version of the code includes the debug output trace mechanism and 9319 has 9320 a much larger code and data size. 9321 9322 Previous Release: 9323 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 9324 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 9325 Current Release: 9326 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 9327 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 9328 9329 9330 2) iASL Compiler/Disassembler and Tools: 9331 9332 Modified the parser to allow the names IO, DMA, and IRQ to be used as 9333 namespace identifiers with no collision with existing resource descriptor 9334 macro names. This provides compatibility with other ASL compilers and is 9335 most useful for disassembly/recompilation of existing tables without 9336 parse 9337 errors. (With assistance from Thomas Renninger) 9338 9339 Disassembler: fixed an incorrect disassembly problem with the 9340 DataTableRegion and CopyObject operators. Fixed a possible fault during 9341 disassembly of some Alias operators. 9342 9343 ---------------------------------------- 9344 12 May 2006. Summary of changes for version 20060512: 9345 9346 1) ACPI CA Core Subsystem: 9347 9348 Replaced the AcpiOsQueueForExecution interface with a new interface named 9349 AcpiOsExecute. The major difference is that the new interface does not 9350 have 9351 a Priority parameter, this appeared to be useless and has been replaced 9352 by 9353 a 9354 Type parameter. The Type tells the host what type of execution is being 9355 requested, such as global lock handler, notify handler, GPE handler, etc. 9356 This allows the host to queue and execute the request as appropriate for 9357 the 9358 request type, possibly using different work queues and different 9359 priorities 9360 for the various request types. This enables fixes for multithreading 9361 deadlock problems such as BZ #5534, and will require changes to all 9362 existing 9363 OS interface layers. (Alexey Starikovskiy and Bob Moore) 9364 9365 Fixed a possible memory leak associated with the support for the so- 9366 called 9367 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 9368 Suietov) 9369 9370 Fixed a problem with the Load() operator where a table load from an 9371 operation region could overwrite an internal table buffer by up to 7 9372 bytes 9373 and cause alignment faults on IPF systems. (With assistance from Luming 9374 Yu) 9375 9376 Example Code and Data Size: These are the sizes for the OS-independent 9377 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9378 debug version of the code includes the debug output trace mechanism and 9379 has 9380 a much larger code and data size. 9381 9382 Previous Release: 9383 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 9384 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 9385 Current Release: 9386 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 9387 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 9388 9389 9390 9391 2) iASL Compiler/Disassembler and Tools: 9392 9393 Disassembler: Implemented support to cross reference the internal 9394 namespace 9395 and automatically generate ASL External() statements for symbols not 9396 defined 9397 within the current table being disassembled. This will simplify the 9398 disassembly and recompilation of interdependent tables such as SSDTs 9399 since 9400 these statements will no longer have to be added manually. 9401 9402 Disassembler: Implemented experimental support to automatically detect 9403 invocations of external control methods and generate appropriate 9404 External() 9405 statements. This is problematic because the AML cannot be correctly 9406 parsed 9407 until the number of arguments for each control method is known. 9408 Currently, 9409 standalone method invocations and invocations as the source operand of a 9410 Store() statement are supported. 9411 9412 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 9413 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 9414 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 9415 more readable and likely closer to the original ASL source. 9416 9417 ---------------------------------------- 9418 21 April 2006. Summary of changes for version 20060421: 9419 9420 1) ACPI CA Core Subsystem: 9421 9422 Removed a device initialization optimization introduced in 20051216 where 9423 the _STA method was not run unless an _INI was also present for the same 9424 device. This optimization could cause problems because it could allow 9425 _INI 9426 methods to be run within a not-present device subtree. (If a not-present 9427 device had no _INI, _STA would not be run, the not-present status would 9428 not 9429 be discovered, and the children of the device would be incorrectly 9430 traversed.) 9431 9432 Implemented a new _STA optimization where namespace subtrees that do not 9433 contain _INI are identified and ignored during device initialization. 9434 Selectively running _STA can significantly improve boot time on large 9435 machines (with assistance from Len Brown.) 9436 9437 Implemented support for the device initialization case where the returned 9438 _STA flags indicate a device not-present but functioning. In this case, 9439 _INI 9440 is not run, but the device children are examined for presence, as per the 9441 ACPI specification. 9442 9443 Implemented an additional change to the IndexField support in order to 9444 conform to MS behavior. The value written to the Index Register is not 9445 simply a byte offset, it is a byte offset in units of the access width of 9446 the parent Index Field. (Fiodor Suietov) 9447 9448 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 9449 interface is called during the creation of all AML operation regions, and 9450 allows the host OS to exert control over what addresses it will allow the 9451 AML code to access. Operation Regions whose addresses are disallowed will 9452 cause a runtime exception when they are actually accessed (will not 9453 affect 9454 or abort table loading.) See oswinxf or osunixxf for an example 9455 implementation. 9456 9457 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 9458 interface allows the host OS to match the various "optional" 9459 interface/behavior strings for the _OSI predefined control method as 9460 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 9461 for an example implementation. 9462 9463 Restructured and corrected various problems in the exception handling 9464 code 9465 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 9466 (with assistance from Takayoshi Kochi.) 9467 9468 Modified the Linux source converter to ignore quoted string literals 9469 while 9470 converting identifiers from mixed to lower case. This will correct 9471 problems 9472 with the disassembler and other areas where such strings must not be 9473 modified. 9474 9475 The ACPI_FUNCTION_* macros no longer require quotes around the function 9476 name. This allows the Linux source converter to convert the names, now 9477 that 9478 the converter ignores quoted strings. 9479 9480 Example Code and Data Size: These are the sizes for the OS-independent 9481 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9482 debug version of the code includes the debug output trace mechanism and 9483 has 9484 a much larger code and data size. 9485 9486 Previous Release: 9487 9488 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 9489 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 9490 Current Release: 9491 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 9492 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 9493 9494 9495 2) iASL Compiler/Disassembler and Tools: 9496 9497 Implemented 3 new warnings for iASL, and implemented multiple warning 9498 levels 9499 (w2 flag). 9500 9501 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is 9502 not 9503 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 9504 check for the possible timeout, a warning is issued. 9505 9506 2) Useless operators: If an ASL operator does not specify an optional 9507 target 9508 operand and it also does not use the function return value from the 9509 operator, a warning is issued since the operator effectively does 9510 nothing. 9511 9512 3) Unreferenced objects: If a namespace object is created, but never 9513 referenced, a warning is issued. This is a warning level 2 since there 9514 are 9515 cases where this is ok, such as when a secondary table is loaded that 9516 uses 9517 the unreferenced objects. Even so, care is taken to only flag objects 9518 that 9519 don't look like they will ever be used. For example, the reserved methods 9520 (starting with an underscore) are usually not referenced because it is 9521 expected that the OS will invoke them. 9522 9523 ---------------------------------------- 9524 31 March 2006. Summary of changes for version 20060331: 9525 9526 1) ACPI CA Core Subsystem: 9527 9528 Implemented header file support for the following additional ACPI tables: 9529 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this 9530 support, 9531 all current and known ACPI tables are now defined in the ACPICA headers 9532 and 9533 are available for use by device drivers and other software. 9534 9535 Implemented support to allow tables that contain ACPI names with invalid 9536 characters to be loaded. Previously, this would cause the table load to 9537 fail, but since there are several known cases of such tables on existing 9538 machines, this change was made to enable ACPI support for them. Also, 9539 this 9540 matches the behavior of the Microsoft ACPI implementation. 9541 9542 Fixed a couple regressions introduced during the memory optimization in 9543 the 9544 20060317 release. The namespace node definition required additional 9545 reorganization and an internal datatype that had been changed to 8-bit 9546 was 9547 restored to 32-bit. (Valery Podrezov) 9548 9549 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 9550 could be passed through to AcpiOsReleaseObject which is unexpected. Such 9551 null pointers are now trapped and ignored, matching the behavior of the 9552 previous implementation before the deployment of AcpiOsReleaseObject. 9553 (Valery Podrezov, Fiodor Suietov) 9554 9555 Fixed a memory mapping leak during the deletion of a SystemMemory 9556 operation 9557 region where a cached memory mapping was not deleted. This became a 9558 noticeable problem for operation regions that are defined within 9559 frequently 9560 used control methods. (Dana Meyers) 9561 9562 Reorganized the ACPI table header files into two main files: one for the 9563 ACPI tables consumed by the ACPICA core, and another for the 9564 miscellaneous 9565 ACPI tables that are consumed by the drivers and other software. The 9566 various 9567 FADT definitions were merged into one common section and three different 9568 tables (ACPI 1.0, 1.0+, and 2.0) 9569 9570 Example Code and Data Size: These are the sizes for the OS-independent 9571 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9572 debug version of the code includes the debug output trace mechanism and 9573 has 9574 a much larger code and data size. 9575 9576 Previous Release: 9577 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 9578 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 9579 Current Release: 9580 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 9581 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 9582 9583 9584 2) iASL Compiler/Disassembler and Tools: 9585 9586 Disassembler: Implemented support to decode and format all non-AML ACPI 9587 tables (tables other than DSDTs and SSDTs.) This includes the new tables 9588 added to the ACPICA headers, therefore all current and known ACPI tables 9589 are 9590 supported. 9591 9592 Disassembler: The change to allow ACPI names with invalid characters also 9593 enables the disassembly of such tables. Invalid characters within names 9594 are 9595 changed to '*' to make the name printable; the iASL compiler will still 9596 generate an error for such names, however, since this is an invalid ACPI 9597 character. 9598 9599 Implemented an option for AcpiXtract (-a) to extract all tables found in 9600 the 9601 input file. The default invocation extracts only the DSDTs and SSDTs. 9602 9603 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 9604 makefile for the AcpiXtract utility. 9605 9606 ---------------------------------------- 9607 17 March 2006. Summary of changes for version 20060317: 9608 9609 1) ACPI CA Core Subsystem: 9610 9611 Implemented the use of a cache object for all internal namespace nodes. 9612 Since there are about 1000 static nodes in a typical system, this will 9613 decrease memory use for cache implementations that minimize per- 9614 allocation 9615 overhead (such as a slab allocator.) 9616 9617 Removed the reference count mechanism for internal namespace nodes, since 9618 it 9619 was deemed unnecessary. This reduces the size of each namespace node by 9620 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit 9621 case, 9622 and 32 bytes for the 64-bit case. 9623 9624 Optimized several internal data structures to reduce object size on 64- 9625 bit 9626 platforms by packing data within the 64-bit alignment. This includes the 9627 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 9628 instances corresponding to the namespace objects. 9629 9630 Added two new strings for the predefined _OSI method: "Windows 2001.1 9631 SP1" 9632 and "Windows 2006". 9633 9634 Split the allocation tracking mechanism out to a separate file, from 9635 utalloc.c to uttrack.c. This mechanism appears to be only useful for 9636 application-level code. Kernels may wish to not include uttrack.c in 9637 distributions. 9638 9639 Removed all remnants of the obsolete ACPI_REPORT_* macros and the 9640 associated 9641 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 9642 macros.) 9643 9644 Code and Data Size: These are the sizes for the acpica.lib produced by 9645 the 9646 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 9647 ACPI 9648 driver or OSPM code. The debug version of the code includes the debug 9649 output 9650 trace mechanism and has a much larger code and data size. Note that these 9651 values will vary depending on the efficiency of the compiler and the 9652 compiler options used during generation. 9653 9654 Previous Release: 9655 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 9656 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 9657 Current Release: 9658 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 9659 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 9660 9661 9662 2) iASL Compiler/Disassembler and Tools: 9663 9664 Implemented an ANSI C version of the acpixtract utility. This version 9665 will 9666 automatically extract the DSDT and all SSDTs from the input acpidump text 9667 file and dump the binary output to separate files. It can also display a 9668 summary of the input file including the headers for each table found and 9669 will extract any single ACPI table, with any signature. (See 9670 source/tools/acpixtract) 9671 9672 ---------------------------------------- 9673 10 March 2006. Summary of changes for version 20060310: 9674 9675 1) ACPI CA Core Subsystem: 9676 9677 Tagged all external interfaces to the subsystem with the new 9678 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to 9679 assist 9680 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 9681 macro. The default definition is NULL. 9682 9683 Added the ACPI_THREAD_ID type for the return value from 9684 AcpiOsGetThreadId. 9685 This allows the host to define this as necessary to simplify kernel 9686 integration. The default definition is ACPI_NATIVE_UINT. 9687 9688 Fixed two interpreter problems related to error processing, the deletion 9689 of 9690 objects, and placing invalid pointers onto the internal operator result 9691 stack. BZ 6028, 6151 (Valery Podrezov) 9692 9693 Increased the reference count threshold where a warning is emitted for 9694 large 9695 reference counts in order to eliminate unnecessary warnings on systems 9696 with 9697 large namespaces (especially 64-bit.) Increased the value from 0x400 to 9698 0x800. 9699 9700 Due to universal disagreement as to the meaning of the 'c' in the 9701 calloc() 9702 function, the ACPI_MEM_CALLOCATE macro has been renamed to 9703 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 9704 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 9705 ACPI_FREE. 9706 9707 Code and Data Size: These are the sizes for the acpica.lib produced by 9708 the 9709 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 9710 ACPI 9711 driver or OSPM code. The debug version of the code includes the debug 9712 output 9713 trace mechanism and has a much larger code and data size. Note that these 9714 values will vary depending on the efficiency of the compiler and the 9715 compiler options used during generation. 9716 9717 Previous Release: 9718 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 9719 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 9720 Current Release: 9721 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 9722 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 9723 9724 9725 2) iASL Compiler/Disassembler: 9726 9727 Disassembler: implemented support for symbolic resource descriptor 9728 references. If a CreateXxxxField operator references a fixed offset 9729 within 9730 a 9731 resource descriptor, a name is assigned to the descriptor and the offset 9732 is 9733 translated to the appropriate resource tag and pathname. The addition of 9734 this support brings the disassembled code very close to the original ASL 9735 source code and helps eliminate run-time errors when the disassembled 9736 code 9737 is modified (and recompiled) in such a way as to invalidate the original 9738 fixed offsets. 9739 9740 Implemented support for a Descriptor Name as the last parameter to the 9741 ASL 9742 Register() macro. This parameter was inadvertently left out of the ACPI 9743 specification, and will be added for ACPI 3.0b. 9744 9745 Fixed a problem where the use of the "_OSI" string (versus the full path 9746 "\_OSI") caused an internal compiler error. ("No back ptr to op") 9747 9748 Fixed a problem with the error message that occurs when an invalid string 9749 is 9750 used for a _HID object (such as one with an embedded asterisk: 9751 "*PNP010A".) 9752 The correct message is now displayed. 9753 9754 ---------------------------------------- 9755 17 February 2006. Summary of changes for version 20060217: 9756 9757 1) ACPI CA Core Subsystem: 9758 9759 Implemented a change to the IndexField support to match the behavior of 9760 the 9761 Microsoft AML interpreter. The value written to the Index register is now 9762 a 9763 byte offset, no longer an index based upon the width of the Data 9764 register. 9765 This should fix IndexField problems seen on some machines where the Data 9766 register is not exactly one byte wide. The ACPI specification will be 9767 clarified on this point. 9768 9769 Fixed a problem where several resource descriptor types could overrun the 9770 internal descriptor buffer due to size miscalculation: VendorShort, 9771 VendorLong, and Interrupt. This was noticed on IA64 machines, but could 9772 affect all platforms. 9773 9774 Fixed a problem where individual resource descriptors were misaligned 9775 within 9776 the internal buffer, causing alignment faults on IA64 platforms. 9777 9778 Code and Data Size: These are the sizes for the acpica.lib produced by 9779 the 9780 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 9781 ACPI 9782 driver or OSPM code. The debug version of the code includes the debug 9783 output 9784 trace mechanism and has a much larger code and data size. Note that these 9785 values will vary depending on the efficiency of the compiler and the 9786 compiler options used during generation. 9787 9788 Previous Release: 9789 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 9790 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 9791 Current Release: 9792 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 9793 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 9794 9795 9796 2) iASL Compiler/Disassembler: 9797 9798 Implemented support for new reserved names: _WDG and _WED are Microsoft 9799 extensions for Windows Instrumentation Management, _TDL is a new ACPI- 9800 defined method (Throttling Depth Limit.) 9801 9802 Fixed a problem where a zero-length VendorShort or VendorLong resource 9803 descriptor was incorrectly emitted as a descriptor of length one. 9804 9805 ---------------------------------------- 9806 10 February 2006. Summary of changes for version 20060210: 9807 9808 1) ACPI CA Core Subsystem: 9809 9810 Removed a couple of extraneous ACPI_ERROR messages that appeared during 9811 normal execution. These became apparent after the conversion from 9812 ACPI_DEBUG_PRINT. 9813 9814 Fixed a problem where the CreateField operator could hang if the BitIndex 9815 or 9816 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 9817 9818 Fixed a problem where a DeRefOf operation on a buffer object incorrectly 9819 failed with an exception. This also fixes a couple of related RefOf and 9820 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 9821 9822 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead 9823 of 9824 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, 9825 BZ 9826 5480) 9827 9828 Implemented a memory cleanup at the end of the execution of each 9829 iteration 9830 of an AML While() loop, preventing the accumulation of outstanding 9831 objects. 9832 (Valery Podrezov, BZ 5427) 9833 9834 Eliminated a chunk of duplicate code in the object resolution code. 9835 (Valery 9836 Podrezov, BZ 5336) 9837 9838 Fixed several warnings during the 64-bit code generation. 9839 9840 The AcpiSrc source code conversion tool now inserts one line of 9841 whitespace 9842 after an if() statement that is followed immediately by a comment, 9843 improving 9844 readability of the Linux code. 9845 9846 Code and Data Size: The current and previous library sizes for the core 9847 subsystem are shown below. These are the code and data sizes for the 9848 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9849 These 9850 values do not include any ACPI driver or OSPM code. The debug version of 9851 the 9852 code includes the debug output trace mechanism and has a much larger code 9853 and data size. Note that these values will vary depending on the 9854 efficiency 9855 of the compiler and the compiler options used during generation. 9856 9857 Previous Release: 9858 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 9859 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 9860 Current Release: 9861 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 9862 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 9863 9864 9865 2) iASL Compiler/Disassembler: 9866 9867 Fixed a problem with the disassembly of a BankField operator with a 9868 complex 9869 expression for the BankValue parameter. 9870 9871 ---------------------------------------- 9872 27 January 2006. Summary of changes for version 20060127: 9873 9874 1) ACPI CA Core Subsystem: 9875 9876 Implemented support in the Resource Manager to allow unresolved 9877 namestring 9878 references within resource package objects for the _PRT method. This 9879 support 9880 is in addition to the previously implemented unresolved reference support 9881 within the AML parser. If the interpreter slack mode is enabled, these 9882 unresolved references will be passed through to the caller as a NULL 9883 package 9884 entry. 9885 9886 Implemented and deployed new macros and functions for error and warning 9887 messages across the subsystem. These macros are simpler and generate less 9888 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 9889 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 9890 macros remain defined to allow ACPI drivers time to migrate to the new 9891 macros. 9892 9893 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of 9894 the 9895 Acquire/Release Lock OSL interfaces. 9896 9897 Fixed a problem where Alias ASL operators are sometimes not correctly 9898 resolved, in both the interpreter and the iASL compiler. 9899 9900 Fixed several problems with the implementation of the 9901 ConcatenateResTemplate 9902 ASL operator. As per the ACPI specification, zero length buffers are now 9903 treated as a single EndTag. One-length buffers always cause a fatal 9904 exception. Non-zero length buffers that do not end with a full 2-byte 9905 EndTag 9906 cause a fatal exception. 9907 9908 Fixed a possible structure overwrite in the AcpiGetObjectInfo external 9909 interface. (With assistance from Thomas Renninger) 9910 9911 Code and Data Size: The current and previous library sizes for the core 9912 subsystem are shown below. These are the code and data sizes for the 9913 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9914 These 9915 values do not include any ACPI driver or OSPM code. The debug version of 9916 the 9917 code includes the debug output trace mechanism and has a much larger code 9918 and data size. Note that these values will vary depending on the 9919 efficiency 9920 of the compiler and the compiler options used during generation. 9921 9922 Previous Release: 9923 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 9924 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 9925 Current Release: 9926 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 9927 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 9928 9929 9930 2) iASL Compiler/Disassembler: 9931 9932 Fixed an internal error that was generated for any forward references to 9933 ASL 9934 Alias objects. 9935 9936 ---------------------------------------- 9937 13 January 2006. Summary of changes for version 20060113: 9938 9939 1) ACPI CA Core Subsystem: 9940 9941 Added 2006 copyright to all module headers and signons. This affects 9942 virtually every file in the ACPICA core subsystem, iASL compiler, and the 9943 utilities. 9944 9945 Enhanced the ACPICA error reporting in order to simplify user migration 9946 to 9947 the non-debug version of ACPICA. Replaced all instances of the 9948 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN 9949 debug 9950 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 9951 respectively. This preserves all error and warning messages in the non- 9952 debug 9953 version of the ACPICA code (this has been referred to as the "debug lite" 9954 option.) Over 200 cases were converted to create a total of over 380 9955 error/warning messages across the ACPICA code. This increases the code 9956 and 9957 data size of the default non-debug version of the code somewhat (about 9958 13K), 9959 but all error/warning reporting may be disabled if desired (and code 9960 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 9961 configuration option. The size of the debug version of ACPICA remains 9962 about 9963 the same. 9964 9965 Fixed a memory leak within the AML Debugger "Set" command. One object was 9966 not properly deleted for every successful invocation of the command. 9967 9968 Code and Data Size: The current and previous library sizes for the core 9969 subsystem are shown below. These are the code and data sizes for the 9970 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9971 These 9972 values do not include any ACPI driver or OSPM code. The debug version of 9973 the 9974 code includes the debug output trace mechanism and has a much larger code 9975 and data size. Note that these values will vary depending on the 9976 efficiency 9977 of the compiler and the compiler options used during generation. 9978 9979 Previous Release: 9980 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 9981 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 9982 Current Release: 9983 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 9984 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 9985 9986 9987 2) iASL Compiler/Disassembler: 9988 9989 The compiler now officially supports the ACPI 3.0a specification that was 9990 released on December 30, 2005. (Specification is available at 9991 www.acpi.info) 9992 9993 ---------------------------------------- 9994 16 December 2005. Summary of changes for version 20051216: 9995 9996 1) ACPI CA Core Subsystem: 9997 9998 Implemented optional support to allow unresolved names within ASL Package 9999 objects. A null object is inserted in the package when a named reference 10000 cannot be located in the current namespace. Enabled via the interpreter 10001 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on 10002 machines 10003 that contain such code. 10004 10005 Implemented an optimization to the initialization sequence that can 10006 improve 10007 boot time. During ACPI device initialization, the _STA method is now run 10008 if 10009 and only if the _INI method exists. The _STA method is used to determine 10010 if 10011 the device is present; An _INI can only be run if _STA returns present, 10012 but 10013 it is a waste of time to run the _STA method if the _INI does not exist. 10014 (Prototype and assistance from Dong Wei) 10015 10016 Implemented use of the C99 uintptr_t for the pointer casting macros if it 10017 is 10018 available in the current compiler. Otherwise, the default (void *) cast 10019 is 10020 used as before. 10021 10022 Fixed some possible memory leaks found within the execution path of the 10023 Break, Continue, If, and CreateField operators. (Valery Podrezov) 10024 10025 Fixed a problem introduced in the 20051202 release where an exception is 10026 generated during method execution if a control method attempts to declare 10027 another method. 10028 10029 Moved resource descriptor string constants that are used by both the AML 10030 disassembler and AML debugger to the common utilities directory so that 10031 these components are independent. 10032 10033 Implemented support in the AcpiExec utility (-e switch) to globally 10034 ignore 10035 exceptions during control method execution (method is not aborted.) 10036 10037 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 10038 generation. 10039 10040 Code and Data Size: The current and previous library sizes for the core 10041 subsystem are shown below. These are the code and data sizes for the 10042 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10043 These 10044 values do not include any ACPI driver or OSPM code. The debug version of 10045 the 10046 code includes the debug output trace mechanism and has a much larger code 10047 and data size. Note that these values will vary depending on the 10048 efficiency 10049 of the compiler and the compiler options used during generation. 10050 10051 Previous Release: 10052 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 10053 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 10054 Current Release: 10055 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 10056 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 10057 10058 10059 2) iASL Compiler/Disassembler: 10060 10061 Fixed a problem where a CPU stack overflow fault could occur if a 10062 recursive 10063 method call was made from within a Return statement. 10064 10065 ---------------------------------------- 10066 02 December 2005. Summary of changes for version 20051202: 10067 10068 1) ACPI CA Core Subsystem: 10069 10070 Modified the parsing of control methods to no longer create namespace 10071 objects during the first pass of the parse. Objects are now created only 10072 during the execute phase, at the moment the namespace creation operator 10073 is 10074 encountered in the AML (Name, OperationRegion, CreateByteField, etc.) 10075 This 10076 should eliminate ALREADY_EXISTS exceptions seen on some machines where 10077 reentrant control methods are protected by an AML mutex. The mutex will 10078 now 10079 correctly block multiple threads from attempting to create the same 10080 object 10081 more than once. 10082 10083 Increased the number of available Owner Ids for namespace object tracking 10084 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen 10085 on 10086 some machines with a large number of ACPI tables (either static or 10087 dynamic). 10088 10089 Fixed a problem with the AcpiExec utility where a fault could occur when 10090 the 10091 -b switch (batch mode) is used. 10092 10093 Enhanced the namespace dump routine to output the owner ID for each 10094 namespace object. 10095 10096 Code and Data Size: The current and previous library sizes for the core 10097 subsystem are shown below. These are the code and data sizes for the 10098 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10099 These 10100 values do not include any ACPI driver or OSPM code. The debug version of 10101 the 10102 code includes the debug output trace mechanism and has a much larger code 10103 and data size. Note that these values will vary depending on the 10104 efficiency 10105 of the compiler and the compiler options used during generation. 10106 10107 Previous Release: 10108 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 10109 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 10110 Current Release: 10111 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 10112 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 10113 10114 10115 2) iASL Compiler/Disassembler: 10116 10117 Fixed a parse error during compilation of certain Switch/Case constructs. 10118 To 10119 simplify the parse, the grammar now allows for multiple Default 10120 statements 10121 and this error is now detected and flagged during the analysis phase. 10122 10123 Disassembler: The disassembly now includes the contents of the original 10124 table header within a comment at the start of the file. This includes the 10125 name and version of the original ASL compiler. 10126 10127 ---------------------------------------- 10128 17 November 2005. Summary of changes for version 20051117: 10129 10130 1) ACPI CA Core Subsystem: 10131 10132 Fixed a problem in the AML parser where the method thread count could be 10133 decremented below zero if any errors occurred during the method parse 10134 phase. 10135 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some 10136 machines. 10137 This also fixed a related regression with the mechanism that detects and 10138 corrects methods that cannot properly handle reentrancy (related to the 10139 deployment of the new OwnerId mechanism.) 10140 10141 Eliminated the pre-parsing of control methods (to detect errors) during 10142 table load. Related to the problem above, this was causing unwind issues 10143 if 10144 any errors occurred during the parse, and it seemed to be overkill. A 10145 table 10146 load should not be aborted if there are problems with any single control 10147 method, thus rendering this feature rather pointless. 10148 10149 Fixed a problem with the new table-driven resource manager where an 10150 internal 10151 buffer overflow could occur for small resource templates. 10152 10153 Implemented a new external interface, AcpiGetVendorResource. This 10154 interface 10155 will find and return a vendor-defined resource descriptor within a _CRS 10156 or 10157 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn 10158 Helgaas. 10159 10160 Removed the length limit (200) on string objects as per the upcoming ACPI 10161 3.0A specification. This affects the following areas of the interpreter: 10162 1) 10163 any implicit conversion of a Buffer to a String, 2) a String object 10164 result 10165 of the ASL Concatentate operator, 3) the String object result of the ASL 10166 ToString operator. 10167 10168 Fixed a problem in the Windows OS interface layer (OSL) where a 10169 WAIT_FOREVER 10170 on a semaphore object would incorrectly timeout. This allows the 10171 multithreading features of the AcpiExec utility to work properly under 10172 Windows. 10173 10174 Updated the Linux makefiles for the iASL compiler and AcpiExec to include 10175 the recently added file named "utresrc.c". 10176 10177 Code and Data Size: The current and previous library sizes for the core 10178 subsystem are shown below. These are the code and data sizes for the 10179 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10180 These 10181 values do not include any ACPI driver or OSPM code. The debug version of 10182 the 10183 code includes the debug output trace mechanism and has a much larger code 10184 and data size. Note that these values will vary depending on the 10185 efficiency 10186 of the compiler and the compiler options used during generation. 10187 10188 Previous Release: 10189 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 10190 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 10191 Current Release: 10192 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 10193 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 10194 10195 10196 2) iASL Compiler/Disassembler: 10197 10198 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 10199 specification. For the iASL compiler, this means that string literals 10200 within 10201 the source ASL can be of any length. 10202 10203 Enhanced the listing output to dump the AML code for resource descriptors 10204 immediately after the ASL code for each descriptor, instead of in a block 10205 at 10206 the end of the entire resource template. 10207 10208 Enhanced the compiler debug output to dump the entire original parse tree 10209 constructed during the parse phase, before any transforms are applied to 10210 the 10211 tree. The transformed tree is dumped also. 10212 10213 ---------------------------------------- 10214 02 November 2005. Summary of changes for version 20051102: 10215 10216 1) ACPI CA Core Subsystem: 10217 10218 Modified the subsystem initialization sequence to improve GPE support. 10219 The 10220 GPE initialization has been split into two parts in order to defer 10221 execution 10222 of the _PRW methods (Power Resources for Wake) until after the hardware 10223 is 10224 fully initialized and the SCI handler is installed. This allows the _PRW 10225 methods to access fields protected by the Global Lock. This will fix 10226 systems 10227 where a NO_GLOBAL_LOCK exception has been seen during initialization. 10228 10229 Converted the ACPI internal object disassemble and display code within 10230 the 10231 AML debugger to fully table-driven operation, reducing code size and 10232 increasing maintainability. 10233 10234 Fixed a regression with the ConcatenateResTemplate() ASL operator 10235 introduced 10236 in the 20051021 release. 10237 10238 Implemented support for "local" internal ACPI object types within the 10239 debugger "Object" command and the AcpiWalkNamespace external interfaces. 10240 These local types include RegionFields, BankFields, IndexFields, Alias, 10241 and 10242 reference objects. 10243 10244 Moved common AML resource handling code into a new file, "utresrc.c". 10245 This 10246 code is shared by both the Resource Manager and the AML Debugger. 10247 10248 Code and Data Size: The current and previous library sizes for the core 10249 subsystem are shown below. These are the code and data sizes for the 10250 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10251 These 10252 values do not include any ACPI driver or OSPM code. The debug version of 10253 the 10254 code includes the debug output trace mechanism and has a much larger code 10255 and data size. Note that these values will vary depending on the 10256 efficiency 10257 of the compiler and the compiler options used during generation. 10258 10259 Previous Release: 10260 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 10261 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 10262 Current Release: 10263 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 10264 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 10265 10266 10267 2) iASL Compiler/Disassembler: 10268 10269 Fixed a problem with very large initializer lists (more than 4000 10270 elements) 10271 for both Buffer and Package objects where the parse stack could overflow. 10272 10273 Enhanced the pre-compile source code scan for non-ASCII characters to 10274 ignore 10275 characters within comment fields. The scan is now always performed and is 10276 no 10277 longer optional, detecting invalid characters within a source file 10278 immediately rather than during the parse phase or later. 10279 10280 Enhanced the ASL grammar definition to force early reductions on all 10281 list- 10282 style grammar elements so that the overall parse stack usage is greatly 10283 reduced. This should improve performance and reduce the possibility of 10284 parse 10285 stack overflow. 10286 10287 Eliminated all reduce/reduce conflicts in the iASL parser generation. 10288 Also, 10289 with the addition of a %expected statement, the compiler generates from 10290 source with no warnings. 10291 10292 Fixed a possible segment fault in the disassembler if the input filename 10293 does not contain a "dot" extension (Thomas Renninger). 10294 10295 ---------------------------------------- 10296 21 October 2005. Summary of changes for version 20051021: 10297 10298 1) ACPI CA Core Subsystem: 10299 10300 Implemented support for the EM64T and other x86-64 processors. This 10301 essentially entails recognizing that these processors support non-aligned 10302 memory transfers. Previously, all 64-bit processors were assumed to lack 10303 hardware support for non-aligned transfers. 10304 10305 Completed conversion of the Resource Manager to nearly full table-driven 10306 operation. Specifically, the resource conversion code (convert AML to 10307 internal format and the reverse) and the debug code to dump internal 10308 resource descriptors are fully table-driven, reducing code and data size 10309 and 10310 improving maintainability. 10311 10312 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag 10313 word 10314 on 64-bit processors instead of a fixed 32-bit word. (With assistance 10315 from 10316 Alexey Starikovskiy) 10317 10318 Implemented support within the resource conversion code for the Type- 10319 Specific byte within the various ACPI 3.0 *WordSpace macros. 10320 10321 Fixed some issues within the resource conversion code for the type- 10322 specific 10323 flags for both Memory and I/O address resource descriptors. For Memory, 10324 implemented support for the MTP and TTP flags. For I/O, split the TRS and 10325 TTP flags into two separate fields. 10326 10327 Code and Data Size: The current and previous library sizes for the core 10328 subsystem are shown below. These are the code and data sizes for the 10329 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10330 These 10331 values do not include any ACPI driver or OSPM code. The debug version of 10332 the 10333 code includes the debug output trace mechanism and has a much larger code 10334 and data size. Note that these values will vary depending on the 10335 efficiency 10336 of the compiler and the compiler options used during generation. 10337 10338 Previous Release: 10339 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 10340 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 10341 Current Release: 10342 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 10343 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 10344 10345 10346 10347 2) iASL Compiler/Disassembler: 10348 10349 Relaxed a compiler restriction that disallowed a ResourceIndex byte if 10350 the 10351 corresponding ResourceSource string was not also present in a resource 10352 descriptor declaration. This restriction caused problems with existing 10353 AML/ASL code that includes the Index byte without the string. When such 10354 AML 10355 was disassembled, it could not be compiled without modification. Further, 10356 the modified code created a resource template with a different size than 10357 the 10358 original, breaking code that used fixed offsets into the resource 10359 template 10360 buffer. 10361 10362 Removed a recent feature of the disassembler to ignore a lone 10363 ResourceIndex 10364 byte. This byte is now emitted if present so that the exact AML can be 10365 reproduced when the disassembled code is recompiled. 10366 10367 Improved comments and text alignment for the resource descriptor code 10368 emitted by the disassembler. 10369 10370 Implemented disassembler support for the ACPI 3.0 AccessSize field within 10371 a 10372 Register() resource descriptor. 10373 10374 ---------------------------------------- 10375 30 September 2005. Summary of changes for version 20050930: 10376 10377 1) ACPI CA Core Subsystem: 10378 10379 Completed a major overhaul of the Resource Manager code - specifically, 10380 optimizations in the area of the AML/internal resource conversion code. 10381 The 10382 code has been optimized to simplify and eliminate duplicated code, CPU 10383 stack 10384 use has been decreased by optimizing function parameters and local 10385 variables, and naming conventions across the manager have been 10386 standardized 10387 for clarity and ease of maintenance (this includes function, parameter, 10388 variable, and struct/typedef names.) The update may force changes in some 10389 driver code, depending on how resources are handled by the host OS. 10390 10391 All Resource Manager dispatch and information tables have been moved to a 10392 single location for clarity and ease of maintenance. One new file was 10393 created, named "rsinfo.c". 10394 10395 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 10396 guarantee that the argument is not evaluated twice, making them less 10397 prone 10398 to macro side-effects. However, since there exists the possibility of 10399 additional stack use if a particular compiler cannot optimize them (such 10400 as 10401 in the debug generation case), the original macros are optionally 10402 available. 10403 Note that some invocations of the return_VALUE macro may now cause size 10404 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided 10405 to 10406 eliminate these. (From Randy Dunlap) 10407 10408 Implemented a new mechanism to enable debug tracing for individual 10409 control 10410 methods. A new external interface, AcpiDebugTrace, is provided to enable 10411 this mechanism. The intent is to allow the host OS to easily enable and 10412 disable tracing for problematic control methods. This interface can be 10413 easily exposed to a user or debugger interface if desired. See the file 10414 psxface.c for details. 10415 10416 AcpiUtCallocate will now return a valid pointer if a length of zero is 10417 specified - a length of one is used and a warning is issued. This matches 10418 the behavior of AcpiUtAllocate. 10419 10420 Code and Data Size: The current and previous library sizes for the core 10421 subsystem are shown below. These are the code and data sizes for the 10422 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10423 These 10424 values do not include any ACPI driver or OSPM code. The debug version of 10425 the 10426 code includes the debug output trace mechanism and has a much larger code 10427 and data size. Note that these values will vary depending on the 10428 efficiency 10429 of the compiler and the compiler options used during generation. 10430 10431 Previous Release: 10432 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 10433 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 10434 Current Release: 10435 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 10436 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 10437 10438 10439 2) iASL Compiler/Disassembler: 10440 10441 A remark is issued if the effective compile-time length of a package or 10442 buffer is zero. Previously, this was a warning. 10443 10444 ---------------------------------------- 10445 16 September 2005. Summary of changes for version 20050916: 10446 10447 1) ACPI CA Core Subsystem: 10448 10449 Fixed a problem within the Resource Manager where support for the Generic 10450 Register descriptor was not fully implemented. This descriptor is now 10451 fully 10452 recognized, parsed, disassembled, and displayed. 10453 10454 Completely restructured the Resource Manager code to utilize table-driven 10455 dispatch and lookup, eliminating many of the large switch() statements. 10456 This 10457 reduces overall subsystem code size and code complexity. Affects the 10458 resource parsing and construction, disassembly, and debug dump output. 10459 10460 Cleaned up and restructured the debug dump output for all resource 10461 descriptors. Improved readability of the output and reduced code size. 10462 10463 Fixed a problem where changes to internal data structures caused the 10464 optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 10465 10466 Code and Data Size: The current and previous library sizes for the core 10467 subsystem are shown below. These are the code and data sizes for the 10468 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10469 These 10470 values do not include any ACPI driver or OSPM code. The debug version of 10471 the 10472 code includes the debug output trace mechanism and has a much larger code 10473 and data size. Note that these values will vary depending on the 10474 efficiency 10475 of the compiler and the compiler options used during generation. 10476 10477 Previous Release: 10478 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 10479 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 10480 Current Release: 10481 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 10482 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 10483 10484 10485 2) iASL Compiler/Disassembler: 10486 10487 Updated the disassembler to automatically insert an EndDependentFn() 10488 macro 10489 into the ASL stream if this macro is missing in the original AML code, 10490 simplifying compilation of the resulting ASL module. 10491 10492 Fixed a problem in the disassembler where a disassembled ResourceSource 10493 string (within a large resource descriptor) was not surrounded by quotes 10494 and 10495 not followed by a comma, causing errors when the resulting ASL module was 10496 compiled. Also, escape sequences within a ResourceSource string are now 10497 handled correctly (especially "\\") 10498 10499 ---------------------------------------- 10500 02 September 2005. Summary of changes for version 20050902: 10501 10502 1) ACPI CA Core Subsystem: 10503 10504 Fixed a problem with the internal Owner ID allocation and deallocation 10505 mechanisms for control method execution and recursive method invocation. 10506 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 10507 messages seen on some systems. Recursive method invocation depth is 10508 currently limited to 255. (Alexey Starikovskiy) 10509 10510 Completely eliminated all vestiges of support for the "module-level 10511 executable code" until this support is fully implemented and debugged. 10512 This 10513 should eliminate the NO_RETURN_VALUE exceptions seen during table load on 10514 some systems that invoke this support. 10515 10516 Fixed a problem within the resource manager code where the transaction 10517 flags 10518 for a 64-bit address descriptor were handled incorrectly in the type- 10519 specific flag byte. 10520 10521 Consolidated duplicate code within the address descriptor resource 10522 manager 10523 code, reducing overall subsystem code size. 10524 10525 Fixed a fault when using the AML debugger "disassemble" command to 10526 disassemble individual control methods. 10527 10528 Removed references to the "release_current" directory within the Unix 10529 release package. 10530 10531 Code and Data Size: The current and previous core subsystem library sizes 10532 are shown below. These are the code and data sizes for the acpica.lib 10533 produced by the Microsoft Visual C++ 6.0 compiler. These values do not 10534 include any ACPI driver or OSPM code. The debug version of the code 10535 includes 10536 the debug output trace mechanism and has a much larger code and data 10537 size. 10538 Note that these values will vary depending on the efficiency of the 10539 compiler 10540 and the compiler options used during generation. 10541 10542 Previous Release: 10543 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 10544 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 10545 Current Release: 10546 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 10547 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 10548 10549 10550 2) iASL Compiler/Disassembler: 10551 10552 Implemented an error check for illegal duplicate values in the interrupt 10553 and 10554 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 10555 Interrupt(). 10556 10557 Implemented error checking for the Irq() and IrqNoFlags() macros to 10558 detect 10559 too many values in the interrupt list (16 max) and invalid values in the 10560 list (range 0 - 15) 10561 10562 The maximum length string literal within an ASL file is now restricted to 10563 200 characters as per the ACPI specification. 10564 10565 Fixed a fault when using the -ln option (generate namespace listing). 10566 10567 Implemented an error check to determine if a DescriptorName within a 10568 resource descriptor has already been used within the current scope. 10569 10570 ---------------------------------------- 10571 15 August 2005. Summary of changes for version 20050815: 10572 10573 1) ACPI CA Core Subsystem: 10574 10575 Implemented a full bytewise compare to determine if a table load request 10576 is 10577 attempting to load a duplicate table. The compare is performed if the 10578 table 10579 signatures and table lengths match. This will allow different tables with 10580 the same OEM Table ID and revision to be loaded - probably against the 10581 ACPI 10582 specification, but discovered in the field nonetheless. 10583 10584 Added the changes.txt logfile to each of the zipped release packages. 10585 10586 Code and Data Size: Current and previous core subsystem library sizes are 10587 shown below. These are the code and data sizes for the acpica.lib 10588 produced 10589 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10590 any ACPI driver or OSPM code. The debug version of the code includes the 10591 debug output trace mechanism and has a much larger code and data size. 10592 Note 10593 that these values will vary depending on the efficiency of the compiler 10594 and 10595 the compiler options used during generation. 10596 10597 Previous Release: 10598 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 10599 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 10600 Current Release: 10601 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 10602 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 10603 10604 10605 2) iASL Compiler/Disassembler: 10606 10607 Fixed a problem where incorrect AML code could be generated for Package 10608 objects if optimization is disabled (via the -oa switch). 10609 10610 Fixed a problem with where incorrect AML code is generated for variable- 10611 length packages when the package length is not specified and the number 10612 of 10613 initializer values is greater than 255. 10614 10615 10616 ---------------------------------------- 10617 29 July 2005. Summary of changes for version 20050729: 10618 10619 1) ACPI CA Core Subsystem: 10620 10621 Implemented support to ignore an attempt to install/load a particular 10622 ACPI 10623 table more than once. Apparently there exists BIOS code that repeatedly 10624 attempts to load the same SSDT upon certain events. With assistance from 10625 Venkatesh Pallipadi. 10626 10627 Restructured the main interface to the AML parser in order to correctly 10628 handle all exceptional conditions. This will prevent leakage of the 10629 OwnerId 10630 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on 10631 some 10632 machines. With assistance from Alexey Starikovskiy. 10633 10634 Support for "module level code" has been disabled in this version due to 10635 a 10636 number of issues that have appeared on various machines. The support can 10637 be 10638 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 10639 compilation. When the issues are fully resolved, the code will be enabled 10640 by 10641 default again. 10642 10643 Modified the internal functions for debug print support to define the 10644 FunctionName parameter as a (const char *) for compatibility with 10645 compiler 10646 built-in macros such as __FUNCTION__, etc. 10647 10648 Linted the entire ACPICA source tree for both 32-bit and 64-bit. 10649 10650 Implemented support to display an object count summary for the AML 10651 Debugger 10652 commands Object and Methods. 10653 10654 Code and Data Size: Current and previous core subsystem library sizes are 10655 shown below. These are the code and data sizes for the acpica.lib 10656 produced 10657 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10658 any ACPI driver or OSPM code. The debug version of the code includes the 10659 debug output trace mechanism and has a much larger code and data size. 10660 Note 10661 that these values will vary depending on the efficiency of the compiler 10662 and 10663 the compiler options used during generation. 10664 10665 Previous Release: 10666 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 10667 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 10668 Current Release: 10669 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 10670 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 10671 10672 10673 2) iASL Compiler/Disassembler: 10674 10675 Fixed a regression that appeared in the 20050708 version of the compiler 10676 where an error message was inadvertently emitted for invocations of the 10677 _OSI 10678 reserved control method. 10679 10680 ---------------------------------------- 10681 08 July 2005. Summary of changes for version 20050708: 10682 10683 1) ACPI CA Core Subsystem: 10684 10685 The use of the CPU stack in the debug version of the subsystem has been 10686 considerably reduced. Previously, a debug structure was declared in every 10687 function that used the debug macros. This structure has been removed in 10688 favor of declaring the individual elements as parameters to the debug 10689 functions. This reduces the cumulative stack use during nested execution 10690 of 10691 ACPI function calls at the cost of a small increase in the code size of 10692 the 10693 debug version of the subsystem. With assistance from Alexey Starikovskiy 10694 and 10695 Len Brown. 10696 10697 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 10698 headers to define a macro that will return the current function name at 10699 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used 10700 by 10701 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 10702 compiler-dependent header, the function name is saved on the CPU stack 10703 (one 10704 pointer per function.) This mechanism is used because apparently there 10705 exists no standard ANSI-C defined macro that that returns the function 10706 name. 10707 10708 Redesigned and reimplemented the "Owner ID" mechanism used to track 10709 namespace objects created/deleted by ACPI tables and control method 10710 execution. A bitmap is now used to allocate and free the IDs, thus 10711 solving 10712 the wraparound problem present in the previous implementation. The size 10713 of 10714 the namespace node descriptor was reduced by 2 bytes as a result (Alexey 10715 Starikovskiy). 10716 10717 Removed the UINT32_BIT and UINT16_BIT types that were used for the 10718 bitfield 10719 flag definitions within the headers for the predefined ACPI tables. These 10720 have been replaced by UINT8_BIT in order to increase the code portability 10721 of 10722 the subsystem. If the use of UINT8 remains a problem, we may be forced to 10723 eliminate bitfields entirely because of a lack of portability. 10724 10725 Enhanced the performance of the AcpiUtUpdateObjectReference procedure. 10726 This 10727 is a frequently used function and this improvement increases the 10728 performance 10729 of the entire subsystem (Alexey Starikovskiy). 10730 10731 Fixed several possible memory leaks and the inverse - premature object 10732 deletion (Alexey Starikovskiy). 10733 10734 Code and Data Size: Current and previous core subsystem library sizes are 10735 shown below. These are the code and data sizes for the acpica.lib 10736 produced 10737 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10738 any ACPI driver or OSPM code. The debug version of the code includes the 10739 debug output trace mechanism and has a much larger code and data size. 10740 Note 10741 that these values will vary depending on the efficiency of the compiler 10742 and 10743 the compiler options used during generation. 10744 10745 Previous Release: 10746 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 10747 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 10748 Current Release: 10749 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 10750 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 10751 10752 ---------------------------------------- 10753 24 June 2005. Summary of changes for version 20050624: 10754 10755 1) ACPI CA Core Subsystem: 10756 10757 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 10758 the host-defined cache object. This allows the OSL implementation to 10759 define 10760 and type this object in any manner desired, simplifying the OSL 10761 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 10762 Linux, and should be defined in the OS-specific header file for other 10763 operating systems as required. 10764 10765 Changed the interface to AcpiOsAcquireObject to directly return the 10766 requested object as the function return (instead of ACPI_STATUS.) This 10767 change was made for performance reasons, since this is the purpose of the 10768 interface in the first place. AcpiOsAcquireObject is now similar to the 10769 AcpiOsAllocate interface. 10770 10771 Implemented a new AML debugger command named Businfo. This command 10772 displays 10773 information about all devices that have an associate _PRT object. The 10774 _ADR, 10775 _HID, _UID, and _CID are displayed for these devices. 10776 10777 Modified the initialization sequence in AcpiInitializeSubsystem to call 10778 the 10779 OSL interface AcpiOslInitialize first, before any local initialization. 10780 This 10781 change was required because the global initialization now calls OSL 10782 interfaces. 10783 10784 Enhanced the Dump command to display the entire contents of Package 10785 objects 10786 (including all sub-objects and their values.) 10787 10788 Restructured the code base to split some files because of size and/or 10789 because the code logically belonged in a separate file. New files are 10790 listed 10791 below. All makefiles and project files included in the ACPI CA release 10792 have 10793 been updated. 10794 utilities/utcache.c /* Local cache interfaces */ 10795 utilities/utmutex.c /* Local mutex support */ 10796 utilities/utstate.c /* State object support */ 10797 interpreter/parser/psloop.c /* Main AML parse loop */ 10798 10799 Code and Data Size: Current and previous core subsystem library sizes are 10800 shown below. These are the code and data sizes for the acpica.lib 10801 produced 10802 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10803 any ACPI driver or OSPM code. The debug version of the code includes the 10804 debug output trace mechanism and has a much larger code and data size. 10805 Note 10806 that these values will vary depending on the efficiency of the compiler 10807 and 10808 the compiler options used during generation. 10809 10810 Previous Release: 10811 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 10812 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 10813 Current Release: 10814 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 10815 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 10816 10817 10818 2) iASL Compiler/Disassembler: 10819 10820 Fixed a regression introduced in version 20050513 where the use of a 10821 Package 10822 object within a Case() statement caused a compile time exception. The 10823 original behavior has been restored (a Match() operator is emitted.) 10824 10825 ---------------------------------------- 10826 17 June 2005. Summary of changes for version 20050617: 10827 10828 1) ACPI CA Core Subsystem: 10829 10830 Moved the object cache operations into the OS interface layer (OSL) to 10831 allow 10832 the host OS to handle these operations if desired (for example, the Linux 10833 OSL will invoke the slab allocator). This support is optional; the 10834 compile 10835 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original 10836 cache 10837 code in the ACPI CA core. The new OSL interfaces are shown below. See 10838 utalloc.c for an example implementation, and acpiosxf.h for the exact 10839 interface definitions. With assistance from Alexey Starikovskiy. 10840 AcpiOsCreateCache 10841 AcpiOsDeleteCache 10842 AcpiOsPurgeCache 10843 AcpiOsAcquireObject 10844 AcpiOsReleaseObject 10845 10846 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to 10847 return 10848 and restore a flags parameter. This fits better with many OS lock models. 10849 Note: the current execution state (interrupt handler or not) is no longer 10850 passed to these interfaces. If necessary, the OSL must determine this 10851 state 10852 by itself, a simple and fast operation. With assistance from Alexey 10853 Starikovskiy. 10854 10855 Fixed a problem in the ACPI table handling where a valid XSDT was assumed 10856 present if the revision of the RSDP was 2 or greater. According to the 10857 ACPI 10858 specification, the XSDT is optional in all cases, and the table manager 10859 therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 10860 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs 10861 contain 10862 only the RSDT. 10863 10864 Fixed an interpreter problem with the Mid() operator in the case of an 10865 input 10866 string where the resulting output string is of zero length. It now 10867 correctly 10868 returns a valid, null terminated string object instead of a string object 10869 with a null pointer. 10870 10871 Fixed a problem with the control method argument handling to allow a 10872 store 10873 to an Arg object that already contains an object of type Device. The 10874 Device 10875 object is now correctly overwritten. Previously, an error was returned. 10876 10877 10878 Enhanced the debugger Find command to emit object values in addition to 10879 the 10880 found object pathnames. The output format is the same as the dump 10881 namespace 10882 command. 10883 10884 Enhanced the debugger Set command. It now has the ability to set the 10885 value 10886 of any Named integer object in the namespace (Previously, only method 10887 locals 10888 and args could be set.) 10889 10890 Code and Data Size: Current and previous core subsystem library sizes are 10891 shown below. These are the code and data sizes for the acpica.lib 10892 produced 10893 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10894 any ACPI driver or OSPM code. The debug version of the code includes the 10895 debug output trace mechanism and has a much larger code and data size. 10896 Note 10897 that these values will vary depending on the efficiency of the compiler 10898 and 10899 the compiler options used during generation. 10900 10901 Previous Release: 10902 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 10903 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 10904 Current Release: 10905 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 10906 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 10907 10908 10909 2) iASL Compiler/Disassembler: 10910 10911 Fixed a regression in the disassembler where if/else/while constructs 10912 were 10913 output incorrectly. This problem was introduced in the previous release 10914 (20050526). This problem also affected the single-step disassembly in the 10915 debugger. 10916 10917 Fixed a problem where compiling the reserved _OSI method would randomly 10918 (but 10919 rarely) produce compile errors. 10920 10921 Enhanced the disassembler to emit compilable code in the face of 10922 incorrect 10923 AML resource descriptors. If the optional ResourceSourceIndex is present, 10924 but the ResourceSource is not, do not emit the ResourceSourceIndex in the 10925 disassembly. Otherwise, the resulting code cannot be compiled without 10926 errors. 10927 10928 ---------------------------------------- 10929 26 May 2005. Summary of changes for version 20050526: 10930 10931 1) ACPI CA Core Subsystem: 10932 10933 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 10934 the module level (not within a control method.) These opcodes are 10935 executed 10936 exactly once at the time the table is loaded. This type of code was legal 10937 up 10938 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA 10939 in 10940 order to provide backwards compatibility with earlier BIOS 10941 implementations. 10942 This eliminates the "Encountered executable code at module level" warning 10943 that was previously generated upon detection of such code. 10944 10945 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 10946 inadvertently be generated during the lookup of namespace objects in the 10947 second pass parse of ACPI tables and control methods. It appears that 10948 this 10949 problem could occur during the resolution of forward references to 10950 namespace 10951 objects. 10952 10953 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 10954 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 10955 allows the deadlock detection debug code to be compiled out in the normal 10956 case, improving mutex performance (and overall subsystem performance) 10957 considerably. 10958 10959 Implemented a handful of miscellaneous fixes for possible memory leaks on 10960 error conditions and error handling control paths. These fixes were 10961 suggested by FreeBSD and the Coverity Prevent source code analysis tool. 10962 10963 Added a check for a null RSDT pointer in AcpiGetFirmwareTable 10964 (tbxfroot.c) 10965 to prevent a fault in this error case. 10966 10967 Code and Data Size: Current and previous core subsystem library sizes are 10968 shown below. These are the code and data sizes for the acpica.lib 10969 produced 10970 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10971 any ACPI driver or OSPM code. The debug version of the code includes the 10972 debug output trace mechanism and has a much larger code and data size. 10973 Note 10974 that these values will vary depending on the efficiency of the compiler 10975 and 10976 the compiler options used during generation. 10977 10978 Previous Release: 10979 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 10980 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 10981 Current Release: 10982 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 10983 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 10984 10985 10986 2) iASL Compiler/Disassembler: 10987 10988 Implemented support to allow Type 1 and Type 2 ASL operators to appear at 10989 the module level (not within a control method.) These operators will be 10990 executed once at the time the table is loaded. This type of code was 10991 legal 10992 up until the release of ACPI 2.0B (2002) and is now supported by the iASL 10993 compiler in order to provide backwards compatibility with earlier BIOS 10994 ASL 10995 code. 10996 10997 The ACPI integer width (specified via the table revision ID or the -r 10998 override, 32 or 64 bits) is now used internally during compile-time 10999 constant 11000 folding to ensure that constants are truncated to 32 bits if necessary. 11001 Previously, the revision ID value was only emitted in the AML table 11002 header. 11003 11004 An error message is now generated for the Mutex and Method operators if 11005 the 11006 SyncLevel parameter is outside the legal range of 0 through 15. 11007 11008 Fixed a problem with the Method operator ParameterTypes list handling 11009 (ACPI 11010 3.0). Previously, more than 2 types or 2 arguments generated a syntax 11011 error. 11012 The actual underlying implementation of method argument typechecking is 11013 still under development, however. 11014 11015 ---------------------------------------- 11016 13 May 2005. Summary of changes for version 20050513: 11017 11018 1) ACPI CA Core Subsystem: 11019 11020 Implemented support for PCI Express root bridges -- added support for 11021 device 11022 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 11023 11024 The interpreter now automatically truncates incoming 64-bit constants to 11025 32 11026 bits if currently executing out of a 32-bit ACPI table (Revision < 2). 11027 This 11028 also affects the iASL compiler constant folding. (Note: as per below, the 11029 iASL compiler no longer allows 64-bit constants within 32-bit tables.) 11030 11031 Fixed a problem where string and buffer objects with "static" pointers 11032 (pointers to initialization data within an ACPI table) were not handled 11033 consistently. The internal object copy operation now always copies the 11034 data 11035 to a newly allocated buffer, regardless of whether the source object is 11036 static or not. 11037 11038 Fixed a problem with the FromBCD operator where an implicit result 11039 conversion was improperly performed while storing the result to the 11040 target 11041 operand. Since this is an "explicit conversion" operator, the implicit 11042 conversion should never be performed on the output. 11043 11044 Fixed a problem with the CopyObject operator where a copy to an existing 11045 named object did not always completely overwrite the existing object 11046 stored 11047 at name. Specifically, a buffer-to-buffer copy did not delete the 11048 existing 11049 buffer. 11050 11051 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces 11052 and 11053 structs for consistency. 11054 11055 Code and Data Size: Current and previous core subsystem library sizes are 11056 shown below. These are the code and data sizes for the acpica.lib 11057 produced 11058 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11059 any ACPI driver or OSPM code. The debug version of the code includes the 11060 debug output trace mechanism and has a much larger code and data size. 11061 Note 11062 that these values will vary depending on the efficiency of the compiler 11063 and 11064 the compiler options used during generation. 11065 11066 Previous Release: 11067 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 11068 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 11069 Current Release: (Same sizes) 11070 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 11071 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 11072 11073 11074 2) iASL Compiler/Disassembler: 11075 11076 The compiler now emits a warning if an attempt is made to generate a 64- 11077 bit 11078 integer constant from within a 32-bit ACPI table (Revision < 2). The 11079 integer 11080 is truncated to 32 bits. 11081 11082 Fixed a problem with large package objects: if the static length of the 11083 package is greater than 255, the "variable length package" opcode is 11084 emitted. Previously, this caused an error. This requires an update to the 11085 ACPI spec, since it currently (incorrectly) states that packages larger 11086 than 11087 255 elements are not allowed. 11088 11089 The disassembler now correctly handles variable length packages and 11090 packages 11091 larger than 255 elements. 11092 11093 ---------------------------------------- 11094 08 April 2005. Summary of changes for version 20050408: 11095 11096 1) ACPI CA Core Subsystem: 11097 11098 Fixed three cases in the interpreter where an "index" argument to an ASL 11099 function was still (internally) 32 bits instead of the required 64 bits. 11100 This was the Index argument to the Index, Mid, and Match operators. 11101 11102 The "strupr" function is now permanently local (AcpiUtStrupr), since this 11103 is 11104 not a POSIX-defined function and not present in most kernel-level C 11105 libraries. All references to the C library strupr function have been 11106 removed 11107 from the headers. 11108 11109 Completed the deployment of static functions/prototypes. All prototypes 11110 with 11111 the static attribute have been moved from the headers to the owning C 11112 file. 11113 11114 Implemented an extract option (-e) for the AcpiBin utility (AML binary 11115 utility). This option allows the utility to extract individual ACPI 11116 tables 11117 from the output of AcpiDmp. It provides the same functionality of the 11118 acpixtract.pl perl script without the worry of setting the correct perl 11119 options. AcpiBin runs on Windows and has not yet been generated/validated 11120 in 11121 the Linux/Unix environment (but should be soon). 11122 11123 Updated and fixed the table dump option for AcpiBin (-d). This option 11124 converts a single ACPI table to a hex/ascii file, similar to the output 11125 of 11126 AcpiDmp. 11127 11128 Code and Data Size: Current and previous core subsystem library sizes are 11129 shown below. These are the code and data sizes for the acpica.lib 11130 produced 11131 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11132 any ACPI driver or OSPM code. The debug version of the code includes the 11133 debug output trace mechanism and has a much larger code and data size. 11134 Note 11135 that these values will vary depending on the efficiency of the compiler 11136 and 11137 the compiler options used during generation. 11138 11139 Previous Release: 11140 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 11141 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 11142 Current Release: 11143 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 11144 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 11145 11146 11147 2) iASL Compiler/Disassembler: 11148 11149 Disassembler fix: Added a check to ensure that the table length found in 11150 the 11151 ACPI table header within the input file is not longer than the actual 11152 input 11153 file size. This indicates some kind of file or table corruption. 11154 11155 ---------------------------------------- 11156 29 March 2005. Summary of changes for version 20050329: 11157 11158 1) ACPI CA Core Subsystem: 11159 11160 An error is now generated if an attempt is made to create a Buffer Field 11161 of 11162 length zero (A CreateField with a length operand of zero.) 11163 11164 The interpreter now issues a warning whenever executable code at the 11165 module 11166 level is detected during ACPI table load. This will give some idea of the 11167 prevalence of this type of code. 11168 11169 Implemented support for references to named objects (other than control 11170 methods) within package objects. 11171 11172 Enhanced package object output for the debug object. Package objects are 11173 now 11174 completely dumped, showing all elements. 11175 11176 Enhanced miscellaneous object output for the debug object. Any object can 11177 now be written to the debug object (for example, a device object can be 11178 written, and the type of the object will be displayed.) 11179 11180 The "static" qualifier has been added to all local functions across both 11181 the 11182 core subsystem and the iASL compiler. 11183 11184 The number of "long" lines (> 80 chars) within the source has been 11185 significantly reduced, by about 1/3. 11186 11187 Cleaned up all header files to ensure that all CA/iASL functions are 11188 prototyped (even static functions) and the formatting is consistent. 11189 11190 Two new header files have been added, acopcode.h and acnames.h. 11191 11192 Removed several obsolete functions that were no longer used. 11193 11194 Code and Data Size: Current and previous core subsystem library sizes are 11195 shown below. These are the code and data sizes for the acpica.lib 11196 produced 11197 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11198 any ACPI driver or OSPM code. The debug version of the code includes the 11199 debug output trace mechanism and has a much larger code and data size. 11200 Note 11201 that these values will vary depending on the efficiency of the compiler 11202 and 11203 the compiler options used during generation. 11204 11205 Previous Release: 11206 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11207 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 11208 Current Release: 11209 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 11210 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 11211 11212 11213 11214 2) iASL Compiler/Disassembler: 11215 11216 Fixed a problem with the resource descriptor generation/support. For the 11217 ResourceSourceIndex and the ResourceSource fields, both must be present, 11218 or 11219 both must be not present - can't have one without the other. 11220 11221 The compiler now returns non-zero from the main procedure if any errors 11222 have 11223 occurred during the compilation. 11224 11225 11226 ---------------------------------------- 11227 09 March 2005. Summary of changes for version 20050309: 11228 11229 1) ACPI CA Core Subsystem: 11230 11231 The string-to-buffer implicit conversion code has been modified again 11232 after 11233 a change to the ACPI specification. In order to match the behavior of 11234 the 11235 other major ACPI implementation, the target buffer is no longer truncated 11236 if 11237 the source string is smaller than an existing target buffer. This change 11238 requires an update to the ACPI spec, and should eliminate the recent 11239 AE_AML_BUFFER_LIMIT issues. 11240 11241 The "implicit return" support was rewritten to a new algorithm that 11242 solves 11243 the general case. Rather than attempt to determine when a method is about 11244 to 11245 exit, the result of every ASL operator is saved momentarily until the 11246 very 11247 next ASL operator is executed. Therefore, no matter how the method exits, 11248 there will always be a saved implicit return value. This feature is only 11249 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should 11250 eliminate 11251 AE_AML_NO_RETURN_VALUE errors when enabled. 11252 11253 Implemented implicit conversion support for the predicate (operand) of 11254 the 11255 If, Else, and While operators. String and Buffer arguments are 11256 automatically 11257 converted to Integers. 11258 11259 Changed the string-to-integer conversion behavior to match the new ACPI 11260 errata: "If no integer object exists, a new integer is created. The ASCII 11261 string is interpreted as a hexadecimal constant. Each string character is 11262 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 11263 with the first character as the most significant digit, and ending with 11264 the 11265 first non-hexadecimal character or end-of-string." This means that the 11266 first 11267 non-hex character terminates the conversion and this is the code that was 11268 changed. 11269 11270 Fixed a problem where the ObjectType operator would fail (fault) when 11271 used 11272 on an Index of a Package which pointed to a null package element. The 11273 operator now properly returns zero (Uninitialized) in this case. 11274 11275 Fixed a problem where the While operator used excessive memory by not 11276 properly popping the result stack during execution. There was no memory 11277 leak 11278 after execution, however. (Code provided by Valery Podrezov.) 11279 11280 Fixed a problem where references to control methods within Package 11281 objects 11282 caused the method to be invoked, instead of producing a reference object 11283 pointing to the method. 11284 11285 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) 11286 to 11287 improve performance and reduce code size. (Code provided by Alexey 11288 Starikovskiy.) 11289 11290 Code and Data Size: Current and previous core subsystem library sizes are 11291 shown below. These are the code and data sizes for the acpica.lib 11292 produced 11293 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11294 any ACPI driver or OSPM code. The debug version of the code includes the 11295 debug output trace mechanism and has a much larger code and data size. 11296 Note 11297 that these values will vary depending on the efficiency of the compiler 11298 and 11299 the compiler options used during generation. 11300 11301 Previous Release: 11302 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11303 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 11304 Current Release: 11305 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11306 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 11307 11308 11309 2) iASL Compiler/Disassembler: 11310 11311 Fixed a problem with the Return operator with no arguments. Since the AML 11312 grammar for the byte encoding requires an operand for the Return opcode, 11313 the 11314 compiler now emits a Return(Zero) for this case. An ACPI specification 11315 update has been written for this case. 11316 11317 For tables other than the DSDT, namepath optimization is automatically 11318 disabled. This is because SSDTs can be loaded anywhere in the namespace, 11319 the 11320 compiler has no knowledge of where, and thus cannot optimize namepaths. 11321 11322 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 11323 inadvertently omitted from the ACPI specification, and will require an 11324 update to the spec. 11325 11326 The source file scan for ASCII characters is now optional (-a). This 11327 change 11328 was made because some vendors place non-ascii characters within comments. 11329 However, the scan is simply a brute-force byte compare to ensure all 11330 characters in the file are in the range 0x00 to 0x7F. 11331 11332 Fixed a problem with the CondRefOf operator where the compiler was 11333 inappropriately checking for the existence of the target. Since the point 11334 of 11335 the operator is to check for the existence of the target at run-time, the 11336 compiler no longer checks for the target existence. 11337 11338 Fixed a problem where errors generated from the internal AML interpreter 11339 during constant folding were not handled properly, causing a fault. 11340 11341 Fixed a problem with overly aggressive range checking for the Stall 11342 operator. The valid range (max 255) is now only checked if the operand is 11343 of 11344 type Integer. All other operand types cannot be statically checked. 11345 11346 Fixed a problem where control method references within the RefOf, 11347 DeRefOf, 11348 and ObjectType operators were not treated properly. They are now treated 11349 as 11350 actual references, not method invocations. 11351 11352 Fixed and enhanced the "list namespace" option (-ln). This option was 11353 broken 11354 a number of releases ago. 11355 11356 Improved error handling for the Field, IndexField, and BankField 11357 operators. 11358 The compiler now cleanly reports and recovers from errors in the field 11359 component (FieldUnit) list. 11360 11361 Fixed a disassembler problem where the optional ResourceDescriptor fields 11362 TRS and TTP were not always handled correctly. 11363 11364 Disassembler - Comments in output now use "//" instead of "/*" 11365 11366 ---------------------------------------- 11367 28 February 2005. Summary of changes for version 20050228: 11368 11369 1) ACPI CA Core Subsystem: 11370 11371 Fixed a problem where the result of an Index() operator (an object 11372 reference) must increment the reference count on the target object for 11373 the 11374 life of the object reference. 11375 11376 Implemented AML Interpreter and Debugger support for the new ACPI 3.0 11377 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and 11378 WordSpace 11379 resource descriptors. 11380 11381 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 11382 Space Descriptor" string, indicating interpreter support for the 11383 descriptors 11384 above. 11385 11386 Implemented header support for the new ACPI 3.0 FADT flag bits. 11387 11388 Implemented header support for the new ACPI 3.0 PCI Express bits for the 11389 PM1 11390 status/enable registers. 11391 11392 Updated header support for the MADT processor local Apic struct and MADT 11393 platform interrupt source struct for new ACPI 3.0 fields. 11394 11395 Implemented header support for the SRAT and SLIT ACPI tables. 11396 11397 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" 11398 flag 11399 at runtime. 11400 11401 Code and Data Size: Current and previous core subsystem library sizes are 11402 shown below. These are the code and data sizes for the acpica.lib 11403 produced 11404 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11405 any ACPI driver or OSPM code. The debug version of the code includes the 11406 debug output trace mechanism and has a much larger code and data size. 11407 Note 11408 that these values will vary depending on the efficiency of the compiler 11409 and 11410 the compiler options used during generation. 11411 11412 Previous Release: 11413 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 11414 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 11415 Current Release: 11416 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11417 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 11418 11419 11420 2) iASL Compiler/Disassembler: 11421 11422 Fixed a problem with the internal 64-bit String-to-integer conversion 11423 with 11424 strings less than two characters long. 11425 11426 Fixed a problem with constant folding where the result of the Index() 11427 operator can not be considered a constant. This means that Index() cannot 11428 be 11429 a type3 opcode and this will require an update to the ACPI specification. 11430 11431 Disassembler: Implemented support for the TTP, MTP, and TRS resource 11432 descriptor fields. These fields were inadvertently ignored and not output 11433 in 11434 the disassembly of the resource descriptor. 11435 11436 11437 ---------------------------------------- 11438 11 February 2005. Summary of changes for version 20050211: 11439 11440 1) ACPI CA Core Subsystem: 11441 11442 Implemented ACPI 3.0 support for implicit conversion within the Match() 11443 operator. MatchObjects can now be of type integer, buffer, or string 11444 instead 11445 of just type integer. Package elements are implicitly converted to the 11446 type 11447 of the MatchObject. This change aligns the behavior of Match() with the 11448 behavior of the other logical operators (LLess(), etc.) It also requires 11449 an 11450 errata change to the ACPI specification as this support was intended for 11451 ACPI 3.0, but was inadvertently omitted. 11452 11453 Fixed a problem with the internal implicit "to buffer" conversion. 11454 Strings 11455 that are converted to buffers will cause buffer truncation if the string 11456 is 11457 smaller than the target buffer. Integers that are converted to buffers 11458 will 11459 not cause buffer truncation, only zero extension (both as per the ACPI 11460 spec.) The problem was introduced when code was added to truncate the 11461 buffer, but this should not be performed in all cases, only the string 11462 case. 11463 11464 Fixed a problem with the Buffer and Package operators where the 11465 interpreter 11466 would get confused if two such operators were used as operands to an ASL 11467 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 11468 stack was not being popped after the execution of these operators, 11469 resulting 11470 in an AE_NO_RETURN_VALUE exception. 11471 11472 Fixed a problem with constructs of the form Store(Index(...),...). The 11473 reference object returned from Index was inadvertently resolved to an 11474 actual 11475 value. This problem was introduced in version 20050114 when the behavior 11476 of 11477 Store() was modified to restrict the object types that can be used as the 11478 source operand (to match the ACPI specification.) 11479 11480 Reduced excessive stack use within the AcpiGetObjectInfo procedure. 11481 11482 Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 11483 11484 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 11485 11486 Code and Data Size: Current and previous core subsystem library sizes are 11487 shown below. These are the code and data sizes for the acpica.lib 11488 produced 11489 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11490 any ACPI driver or OSPM code. The debug version of the code includes the 11491 debug output trace mechanism and has a much larger code and data size. 11492 Note 11493 that these values will vary depending on the efficiency of the compiler 11494 and 11495 the compiler options used during generation. 11496 11497 Previous Release: 11498 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 11499 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 11500 Current Release: 11501 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 11502 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 11503 11504 11505 2) iASL Compiler/Disassembler: 11506 11507 Fixed a code generation problem in the constant folding optimization code 11508 where incorrect code was generated if a constant was reduced to a buffer 11509 object (i.e., a reduced type 5 opcode.) 11510 11511 Fixed a typechecking problem for the ToBuffer operator. Caused by an 11512 incorrect return type in the internal opcode information table. 11513 11514 ---------------------------------------- 11515 25 January 2005. Summary of changes for version 20050125: 11516 11517 1) ACPI CA Core Subsystem: 11518 11519 Fixed a recently introduced problem with the Global Lock where the 11520 underlying semaphore was not created. This problem was introduced in 11521 version 20050114, and caused an AE_AML_NO_OPERAND exception during an 11522 Acquire() operation on _GL. 11523 11524 The local object cache is now optional, and is disabled by default. Both 11525 AcpiExec and the iASL compiler enable the cache because they run in user 11526 mode and this enhances their performance. #define 11527 ACPI_ENABLE_OBJECT_CACHE 11528 to enable the local cache. 11529 11530 Fixed an issue in the internal function AcpiUtEvaluateObject concerning 11531 the 11532 optional "implicit return" support where an error was returned if no 11533 return 11534 object was expected, but one was implicitly returned. AE_OK is now 11535 returned 11536 in this case and the implicitly returned object is deleted. 11537 AcpiUtEvaluateObject is only occasionally used, and only to execute 11538 reserved 11539 methods such as _STA and _INI where the return type is known up front. 11540 11541 Fixed a few issues with the internal convert-to-integer code. It now 11542 returns 11543 an error if an attempt is made to convert a null string, a string of only 11544 blanks/tabs, or a zero-length buffer. This affects both implicit 11545 conversion 11546 and explicit conversion via the ToInteger() operator. 11547 11548 The internal debug code in AcpiUtAcquireMutex has been commented out. It 11549 is 11550 not needed for normal operation and should increase the performance of 11551 the 11552 entire subsystem. The code remains in case it is needed for debug 11553 purposes 11554 again. 11555 11556 The AcpiExec source and makefile are included in the Unix/Linux package 11557 for 11558 the first time. 11559 11560 Code and Data Size: Current and previous core subsystem library sizes are 11561 shown below. These are the code and data sizes for the acpica.lib 11562 produced 11563 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11564 any ACPI driver or OSPM code. The debug version of the code includes the 11565 debug output trace mechanism and has a much larger code and data size. 11566 Note 11567 that these values will vary depending on the efficiency of the compiler 11568 and 11569 the compiler options used during generation. 11570 11571 Previous Release: 11572 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 11573 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 11574 Current Release: 11575 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 11576 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 11577 11578 2) iASL Compiler/Disassembler: 11579 11580 Switch/Case support: A warning is now issued if the type of the Switch 11581 value 11582 cannot be determined at compile time. For example, Switch(Arg0) will 11583 generate the warning, and the type is assumed to be an integer. As per 11584 the 11585 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate 11586 the 11587 warning. 11588 11589 Switch/Case support: Implemented support for buffer and string objects as 11590 the switch value. This is an ACPI 3.0 feature, now that LEqual supports 11591 buffers and strings. 11592 11593 Switch/Case support: The emitted code for the LEqual() comparisons now 11594 uses 11595 the switch value as the first operand, not the second. The case value is 11596 now 11597 the second operand, and this allows the case value to be implicitly 11598 converted to the type of the switch value, not the other way around. 11599 11600 Switch/Case support: Temporary variables are now emitted immediately 11601 within 11602 the control method, not at the global level. This means that there are 11603 now 11604 36 temps available per-method, not 36 temps per-module as was the case 11605 with 11606 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 11607 11608 ---------------------------------------- 11609 14 January 2005. Summary of changes for version 20050114: 11610 11611 Added 2005 copyright to all module headers. This affects every module in 11612 the core subsystem, iASL compiler, and the utilities. 11613 11614 1) ACPI CA Core Subsystem: 11615 11616 Fixed an issue with the String-to-Buffer conversion code where the string 11617 null terminator was not included in the buffer after conversion, but 11618 there 11619 is existing ASL that assumes the string null terminator is included. This 11620 is 11621 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 11622 introduced in the previous version when the code was updated to correctly 11623 set the converted buffer size as per the ACPI specification. The ACPI 11624 spec 11625 is ambiguous and will be updated to specify that the null terminator must 11626 be 11627 included in the converted buffer. This also affects the ToBuffer() ASL 11628 operator. 11629 11630 Fixed a problem with the Mid() ASL/AML operator where it did not work 11631 correctly on Buffer objects. Newly created sub-buffers were not being 11632 marked 11633 as initialized. 11634 11635 11636 Fixed a problem in AcpiTbFindTable where incorrect string compares were 11637 performed on the OemId and OemTableId table header fields. These fields 11638 are 11639 not null terminated, so strncmp is now used instead of strcmp. 11640 11641 Implemented a restriction on the Store() ASL/AML operator to align the 11642 behavior with the ACPI specification. Previously, any object could be 11643 used 11644 as the source operand. Now, the only objects that may be used are 11645 Integers, 11646 Buffers, Strings, Packages, Object References, and DDB Handles. If 11647 necessary, the original behavior can be restored by enabling the 11648 EnableInterpreterSlack flag. 11649 11650 Enhanced the optional "implicit return" support to allow an implicit 11651 return 11652 value from methods that are invoked externally via the AcpiEvaluateObject 11653 interface. This enables implicit returns from the _STA and _INI methods, 11654 for example. 11655 11656 Changed the Revision() ASL/AML operator to return the current version of 11657 the 11658 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly 11659 returned 11660 the supported ACPI version (This is the function of the _REV method). 11661 11662 Updated the _REV predefined method to return the currently supported 11663 version 11664 of ACPI, now 3. 11665 11666 Implemented batch mode option for the AcpiExec utility (-b). 11667 11668 Code and Data Size: Current and previous core subsystem library sizes are 11669 shown below. These are the code and data sizes for the acpica.lib 11670 produced 11671 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11672 any ACPI driver or OSPM code. The debug version of the code includes the 11673 debug output trace mechanism and has a much larger code and data size. 11674 Note 11675 that these values will vary depending on the efficiency of the compiler 11676 and 11677 the compiler options used during generation. 11678 11679 Previous Release: 11680 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11681 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 11682 Current Release: 11683 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 11684 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 11685 11686 ---------------------------------------- 11687 10 December 2004. Summary of changes for version 20041210: 11688 11689 ACPI 3.0 support is nearing completion in both the iASL compiler and the 11690 ACPI CA core subsystem. 11691 11692 1) ACPI CA Core Subsystem: 11693 11694 Fixed a problem in the ToDecimalString operator where the resulting 11695 string 11696 length was incorrectly calculated. The length is now calculated exactly, 11697 eliminating incorrect AE_STRING_LIMIT exceptions. 11698 11699 Fixed a problem in the ToHexString operator to allow a maximum 200 11700 character 11701 string to be produced. 11702 11703 Fixed a problem in the internal string-to-buffer and buffer-to-buffer 11704 copy 11705 routine where the length of the resulting buffer was not truncated to the 11706 new size (if the target buffer already existed). 11707 11708 Code and Data Size: Current and previous core subsystem library sizes are 11709 shown below. These are the code and data sizes for the acpica.lib 11710 produced 11711 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11712 any ACPI driver or OSPM code. The debug version of the code includes the 11713 debug output trace mechanism and has a much larger code and data size. 11714 Note 11715 that these values will vary depending on the efficiency of the compiler 11716 and 11717 the compiler options used during generation. 11718 11719 Previous Release: 11720 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11721 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 11722 Current Release: 11723 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11724 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 11725 11726 11727 2) iASL Compiler/Disassembler: 11728 11729 Implemented the new ACPI 3.0 resource template macros - DWordSpace, 11730 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 11731 Includes support in the disassembler. 11732 11733 Implemented support for the new (ACPI 3.0) parameter to the Register 11734 macro, 11735 AccessSize. 11736 11737 Fixed a problem where the _HE resource name for the Interrupt macro was 11738 referencing bit 0 instead of bit 1. 11739 11740 Implemented check for maximum 255 interrupts in the Interrupt macro. 11741 11742 Fixed a problem with the predefined resource descriptor names where 11743 incorrect AML code was generated if the offset within the resource buffer 11744 was 0 or 1. The optimizer shortened the AML code to a single byte opcode 11745 but did not update the surrounding package lengths. 11746 11747 Changes to the Dma macro: All channels within the channel list must be 11748 in 11749 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 11750 optional (default is BusMaster). 11751 11752 Implemented check for maximum 7 data bytes for the VendorShort macro. 11753 11754 The ReadWrite parameter is now optional for the Memory32 and similar 11755 macros. 11756 11757 ---------------------------------------- 11758 03 December 2004. Summary of changes for version 20041203: 11759 11760 1) ACPI CA Core Subsystem: 11761 11762 The low-level field insertion/extraction code (exfldio) has been 11763 completely 11764 rewritten to eliminate unnecessary complexity, bugs, and boundary 11765 conditions. 11766 11767 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and 11768 ToDecimalString 11769 operators where the input operand could be inadvertently deleted if no 11770 conversion was necessary (e.g., if the input to ToInteger was an Integer 11771 object.) 11772 11773 Fixed a problem with the ToDecimalString and ToHexString where an 11774 incorrect 11775 exception code was returned if the resulting string would be > 200 chars. 11776 AE_STRING_LIMIT is now returned. 11777 11778 Fixed a problem with the Concatenate operator where AE_OK was always 11779 returned, even if the operation failed. 11780 11781 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 11782 semaphores to be allocated. 11783 11784 Code and Data Size: Current and previous core subsystem library sizes are 11785 shown below. These are the code and data sizes for the acpica.lib 11786 produced 11787 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11788 any ACPI driver or OSPM code. The debug version of the code includes the 11789 debug output trace mechanism and has a much larger code and data size. 11790 Note 11791 that these values will vary depending on the efficiency of the compiler 11792 and 11793 the compiler options used during generation. 11794 11795 Previous Release: 11796 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 11797 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 11798 Current Release: 11799 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11800 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 11801 11802 11803 2) iASL Compiler/Disassembler: 11804 11805 Fixed typechecking for the ObjectType and SizeOf operators. Problem was 11806 recently introduced in 20041119. 11807 11808 Fixed a problem with the ToUUID macro where the upper nybble of each 11809 buffer 11810 byte was inadvertently set to zero. 11811 11812 ---------------------------------------- 11813 19 November 2004. Summary of changes for version 20041119: 11814 11815 1) ACPI CA Core Subsystem: 11816 11817 Fixed a problem in the internal ConvertToInteger routine where new 11818 integers 11819 were not truncated to 32 bits for 32-bit ACPI tables. This routine 11820 converts 11821 buffers and strings to integers. 11822 11823 Implemented support to store a value to an Index() on a String object. 11824 This 11825 is an ACPI 2.0 feature that had not yet been implemented. 11826 11827 Implemented new behavior for storing objects to individual package 11828 elements 11829 (via the Index() operator). The previous behavior was to invoke the 11830 implicit 11831 conversion rules if an object was already present at the index. The new 11832 behavior is to simply delete any existing object and directly store the 11833 new 11834 object. Although the ACPI specification seems unclear on this subject, 11835 other 11836 ACPI implementations behave in this manner. (This is the root of the 11837 AE_BAD_HEX_CONSTANT issue.) 11838 11839 Modified the RSDP memory scan mechanism to support the extended checksum 11840 for 11841 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 11842 RSDP signature is found with a valid checksum. 11843 11844 Code and Data Size: Current and previous core subsystem library sizes are 11845 shown below. These are the code and data sizes for the acpica.lib 11846 produced 11847 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11848 any ACPI driver or OSPM code. The debug version of the code includes the 11849 debug output trace mechanism and has a much larger code and data size. 11850 Note 11851 that these values will vary depending on the efficiency of the compiler 11852 and 11853 the compiler options used during generation. 11854 11855 Previous Release: 11856 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 11857 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 11858 Current Release: 11859 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 11860 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 11861 11862 11863 2) iASL Compiler/Disassembler: 11864 11865 Fixed a missing semicolon in the aslcompiler.y file. 11866 11867 ---------------------------------------- 11868 05 November 2004. Summary of changes for version 20041105: 11869 11870 1) ACPI CA Core Subsystem: 11871 11872 Implemented support for FADT revision 2. This was an interim table 11873 (between 11874 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 11875 11876 Implemented optional support to allow uninitialized LocalX and ArgX 11877 variables in a control method. The variables are initialized to an 11878 Integer 11879 object with a value of zero. This support is enabled by setting the 11880 AcpiGbl_EnableInterpreterSlack flag to TRUE. 11881 11882 Implemented support for Integer objects for the SizeOf operator. Either 11883 4 11884 or 8 is returned, depending on the current integer size (32-bit or 64- 11885 bit, 11886 depending on the parent table revision). 11887 11888 Fixed a problem in the implementation of the SizeOf and ObjectType 11889 operators 11890 where the operand was resolved to a value too early, causing incorrect 11891 return values for some objects. 11892 11893 Fixed some possible memory leaks during exceptional conditions. 11894 11895 Code and Data Size: Current and previous core subsystem library sizes are 11896 shown below. These are the code and data sizes for the acpica.lib 11897 produced 11898 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11899 any ACPI driver or OSPM code. The debug version of the code includes the 11900 debug output trace mechanism and has a much larger code and data size. 11901 Note 11902 that these values will vary depending on the efficiency of the compiler 11903 and 11904 the compiler options used during generation. 11905 11906 Previous Release: 11907 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 11908 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 11909 Current Release: 11910 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 11911 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 11912 11913 11914 2) iASL Compiler/Disassembler: 11915 11916 Implemented support for all ACPI 3.0 reserved names and methods. 11917 11918 Implemented all ACPI 3.0 grammar elements in the front-end, including 11919 support for semicolons. 11920 11921 Implemented the ACPI 3.0 Function() and ToUUID() macros 11922 11923 Fixed a problem in the disassembler where a Scope() operator would not be 11924 emitted properly if the target of the scope was in another table. 11925 11926 ---------------------------------------- 11927 15 October 2004. Summary of changes for version 20041015: 11928 11929 Note: ACPI CA is currently undergoing an in-depth and complete formal 11930 evaluation to test/verify the following areas. Other suggestions are 11931 welcome. This will result in an increase in the frequency of releases and 11932 the number of bug fixes in the next few months. 11933 - Functional tests for all ASL/AML operators 11934 - All implicit/explicit type conversions 11935 - Bit fields and operation regions 11936 - 64-bit math support and 32-bit-only "truncated" math support 11937 - Exceptional conditions, both compiler and interpreter 11938 - Dynamic object deletion and memory leaks 11939 - ACPI 3.0 support when implemented 11940 - External interfaces to the ACPI subsystem 11941 11942 11943 1) ACPI CA Core Subsystem: 11944 11945 Fixed two alignment issues on 64-bit platforms - within debug statements 11946 in 11947 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the 11948 Address 11949 field within the non-aligned ACPI generic address structure. 11950 11951 Fixed a problem in the Increment and Decrement operators where incorrect 11952 operand resolution could result in the inadvertent modification of the 11953 original integer when the integer is passed into another method as an 11954 argument and the arg is then incremented/decremented. 11955 11956 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64- 11957 bit 11958 BCD number were truncated during conversion. 11959 11960 Fixed a problem in the ToDecimal operator where the length of the 11961 resulting 11962 string could be set incorrectly too long if the input operand was a 11963 Buffer 11964 object. 11965 11966 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte 11967 (0) 11968 within a buffer would prematurely terminate a compare between buffer 11969 objects. 11970 11971 Added a check for string overflow (>200 characters as per the ACPI 11972 specification) during the Concatenate operator with two string operands. 11973 11974 Code and Data Size: Current and previous core subsystem library sizes are 11975 shown below. These are the code and data sizes for the acpica.lib 11976 produced 11977 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11978 any ACPI driver or OSPM code. The debug version of the code includes the 11979 debug output trace mechanism and has a much larger code and data size. 11980 Note 11981 that these values will vary depending on the efficiency of the compiler 11982 and 11983 the compiler options used during generation. 11984 11985 Previous Release: 11986 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 11987 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 11988 Current Release: 11989 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 11990 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 11991 11992 11993 11994 2) iASL Compiler/Disassembler: 11995 11996 Allow the use of the ObjectType operator on uninitialized Locals and Args 11997 (returns 0 as per the ACPI specification). 11998 11999 Fixed a problem where the compiler would fault if there was a syntax 12000 error 12001 in the FieldName of all of the various CreateXXXField operators. 12002 12003 Disallow the use of lower case letters within the EISAID macro, as per 12004 the 12005 ACPI specification. All EISAID strings must be of the form "UUUNNNN" 12006 Where 12007 U is an uppercase letter and N is a hex digit. 12008 12009 12010 ---------------------------------------- 12011 06 October 2004. Summary of changes for version 20041006: 12012 12013 1) ACPI CA Core Subsystem: 12014 12015 Implemented support for the ACPI 3.0 Timer operator. This ASL function 12016 implements a 64-bit timer with 100 nanosecond granularity. 12017 12018 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 12019 implement the ACPI 3.0 Timer operator. This allows the host OS to 12020 implement 12021 the timer with the best clock available. Also, it keeps the core 12022 subsystem 12023 out of the clock handling business, since the host OS (usually) performs 12024 this function. 12025 12026 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 12027 functions use a 64-bit address which is part of the packed ACPI Generic 12028 Address Structure. Since the structure is non-aligned, the alignment 12029 macros 12030 are now used to extract the address to a local variable before use. 12031 12032 Fixed a problem where the ToInteger operator assumed all input strings 12033 were 12034 hexadecimal. The operator now handles both decimal strings and hex 12035 strings 12036 (prefixed with "0x"). 12037 12038 Fixed a problem where the string length in the string object created as a 12039 result of the internal ConvertToString procedure could be incorrect. This 12040 potentially affected all implicit conversions and also the 12041 ToDecimalString 12042 and ToHexString operators. 12043 12044 Fixed two problems in the ToString operator. If the length parameter was 12045 zero, an incorrect string object was created and the value of the input 12046 length parameter was inadvertently changed from zero to Ones. 12047 12048 Fixed a problem where the optional ResourceSource string in the 12049 ExtendedIRQ 12050 resource macro was ignored. 12051 12052 Simplified the interfaces to the internal division functions, reducing 12053 code 12054 size and complexity. 12055 12056 Code and Data Size: Current and previous core subsystem library sizes are 12057 shown below. These are the code and data sizes for the acpica.lib 12058 produced 12059 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12060 any ACPI driver or OSPM code. The debug version of the code includes the 12061 debug output trace mechanism and has a much larger code and data size. 12062 Note 12063 that these values will vary depending on the efficiency of the compiler 12064 and 12065 the compiler options used during generation. 12066 12067 Previous Release: 12068 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 12069 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 12070 Current Release: 12071 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 12072 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 12073 12074 12075 2) iASL Compiler/Disassembler: 12076 12077 Implemented support for the ACPI 3.0 Timer operator. 12078 12079 Fixed a problem where the Default() operator was inadvertently ignored in 12080 a 12081 Switch/Case block. This was a problem in the translation of the Switch 12082 statement to If...Else pairs. 12083 12084 Added support to allow a standalone Return operator, with no parentheses 12085 (or 12086 operands). 12087 12088 Fixed a problem with code generation for the ElseIf operator where the 12089 translated Else...If parse tree was improperly constructed leading to the 12090 loss of some code. 12091 12092 ---------------------------------------- 12093 22 September 2004. Summary of changes for version 20040922: 12094 12095 1) ACPI CA Core Subsystem: 12096 12097 Fixed a problem with the implementation of the LNot() operator where 12098 "Ones" 12099 was not returned for the TRUE case. Changed the code to return Ones 12100 instead 12101 of (!Arg) which was usually 1. This change affects iASL constant folding 12102 for 12103 this operator also. 12104 12105 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was 12106 not 12107 initialized properly -- Now zero the entire buffer in this case where the 12108 buffer already exists. 12109 12110 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 12111 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 12112 related code considerably. This will require changes/updates to all OS 12113 interface layers (OSLs.) 12114 12115 Implemented a new external interface, AcpiInstallExceptionHandler, to 12116 allow 12117 a system exception handler to be installed. This handler is invoked upon 12118 any 12119 run-time exception that occurs during control method execution. 12120 12121 Added support for the DSDT in AcpiTbFindTable. This allows the 12122 DataTableRegion() operator to access the local copy of the DSDT. 12123 12124 Code and Data Size: Current and previous core subsystem library sizes are 12125 shown below. These are the code and data sizes for the acpica.lib 12126 produced 12127 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12128 any ACPI driver or OSPM code. The debug version of the code includes the 12129 debug output trace mechanism and has a much larger code and data size. 12130 Note 12131 that these values will vary depending on the efficiency of the compiler 12132 and 12133 the compiler options used during generation. 12134 12135 Previous Release: 12136 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 12137 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 12138 Current Release: 12139 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 12140 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 12141 12142 12143 2) iASL Compiler/Disassembler: 12144 12145 Fixed a problem with constant folding and the LNot operator. LNot was 12146 returning 1 in the TRUE case, not Ones as per the ACPI specification. 12147 This 12148 could result in the generation of an incorrect folded/reduced constant. 12149 12150 End-Of-File is now allowed within a "//"-style comment. A parse error no 12151 longer occurs if such a comment is at the very end of the input ASL 12152 source 12153 file. 12154 12155 Implemented the "-r" option to override the Revision in the table header. 12156 The initial use of this option will be to simplify the evaluation of the 12157 AML 12158 interpreter by allowing a single ASL source module to be compiled for 12159 either 12160 32-bit or 64-bit integers. 12161 12162 12163 ---------------------------------------- 12164 27 August 2004. Summary of changes for version 20040827: 12165 12166 1) ACPI CA Core Subsystem: 12167 12168 - Implemented support for implicit object conversion in the non-numeric 12169 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, 12170 and 12171 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 12172 the second operand is implicitly converted on the fly to match the type 12173 of 12174 the first operand. For example: 12175 12176 LEqual (Source1, Source2) 12177 12178 Source1 and Source2 must each evaluate to an integer, a string, or a 12179 buffer. 12180 The data type of Source1 dictates the required type of Source2. Source2 12181 is 12182 implicitly converted if necessary to match the type of Source1. 12183 12184 - Updated and corrected the behavior of the string conversion support. 12185 The 12186 rules concerning conversion of buffers to strings (according to the ACPI 12187 specification) are as follows: 12188 12189 ToDecimalString - explicit byte-wise conversion of buffer to string of 12190 decimal values (0-255) separated by commas. ToHexString - explicit byte- 12191 wise 12192 conversion of buffer to string of hex values (0-FF) separated by commas. 12193 ToString - explicit byte-wise conversion of buffer to string. Byte-by- 12194 byte 12195 copy with no transform except NULL terminated. Any other implicit buffer- 12196 to- 12197 string conversion - byte-wise conversion of buffer to string of hex 12198 values 12199 (0-FF) separated by spaces. 12200 12201 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 12202 12203 - Fixed a problem in AcpiNsGetPathnameLength where the returned length 12204 was 12205 one byte too short in the case of a node in the root scope. This could 12206 cause a fault during debug output. 12207 12208 - Code and Data Size: Current and previous core subsystem library sizes 12209 are 12210 shown below. These are the code and data sizes for the acpica.lib 12211 produced 12212 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12213 any ACPI driver or OSPM code. The debug version of the code includes the 12214 debug output trace mechanism and has a much larger code and data size. 12215 Note 12216 that these values will vary depending on the efficiency of the compiler 12217 and 12218 the compiler options used during generation. 12219 12220 Previous Release: 12221 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 12222 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 12223 Current Release: 12224 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 12225 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 12226 12227 12228 2) iASL Compiler/Disassembler: 12229 12230 - Fixed a Linux generation error. 12231 12232 12233 ---------------------------------------- 12234 16 August 2004. Summary of changes for version 20040816: 12235 12236 1) ACPI CA Core Subsystem: 12237 12238 Designed and implemented support within the AML interpreter for the so- 12239 called "implicit return". This support returns the result of the last 12240 ASL 12241 operation within a control method, in the absence of an explicit Return() 12242 operator. A few machines depend on this behavior, even though it is not 12243 explicitly supported by the ASL language. It is optional support that 12244 can 12245 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 12246 12247 Removed support for the PCI_Config address space from the internal low 12248 level 12249 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 12250 support was not used internally, and would not work correctly anyway 12251 because 12252 the PCI bus number and segment number were not supported. There are 12253 separate interfaces for PCI configuration space access because of the 12254 unique 12255 interface. 12256 12257 Code and Data Size: Current and previous core subsystem library sizes are 12258 shown below. These are the code and data sizes for the acpica.lib 12259 produced 12260 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12261 any ACPI driver or OSPM code. The debug version of the code includes the 12262 debug output trace mechanism and has a much larger code and data size. 12263 Note 12264 that these values will vary depending on the efficiency of the compiler 12265 and 12266 the compiler options used during generation. 12267 12268 Previous Release: 12269 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 12270 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 12271 Current Release: 12272 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 12273 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 12274 12275 12276 2) iASL Compiler/Disassembler: 12277 12278 Fixed a problem where constants in ASL expressions at the root level (not 12279 within a control method) could be inadvertently truncated during code 12280 generation. This problem was introduced in the 20040715 release. 12281 12282 12283 ---------------------------------------- 12284 15 July 2004. Summary of changes for version 20040715: 12285 12286 1) ACPI CA Core Subsystem: 12287 12288 Restructured the internal HW GPE interfaces to pass/track the current 12289 state 12290 of interrupts (enabled/disabled) in order to avoid possible deadlock and 12291 increase flexibility of the interfaces. 12292 12293 Implemented a "lexicographical compare" for String and Buffer objects 12294 within 12295 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual - 12296 - 12297 as per further clarification to the ACPI specification. Behavior is 12298 similar 12299 to C library "strcmp". 12300 12301 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 12302 external function. In the 32-bit non-debug case, the stack use has been 12303 reduced from 168 bytes to 32 bytes. 12304 12305 Deployed a new run-time configuration flag, 12306 AcpiGbl_EnableInterpreterSlack, 12307 whose purpose is to allow the AML interpreter to forgive certain bad AML 12308 constructs. Default setting is FALSE. 12309 12310 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field 12311 IO 12312 support code. If enabled, it allows field access to go beyond the end of 12313 a 12314 region definition if the field is within the region length rounded up to 12315 the 12316 next access width boundary (a common coding error.) 12317 12318 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 12319 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, 12320 these 12321 symbols are lowercased by the latest version of the AcpiSrc tool. 12322 12323 The prototypes for the PCI interfaces in acpiosxf.h have been updated to 12324 rename "Register" to simply "Reg" to prevent certain compilers from 12325 complaining. 12326 12327 Code and Data Size: Current and previous core subsystem library sizes are 12328 shown below. These are the code and data sizes for the acpica.lib 12329 produced 12330 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12331 any ACPI driver or OSPM code. The debug version of the code includes the 12332 debug output trace mechanism and has a much larger code and data size. 12333 Note 12334 that these values will vary depending on the efficiency of the compiler 12335 and 12336 the compiler options used during generation. 12337 12338 Previous Release: 12339 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 12340 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 12341 Current Release: 12342 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 12343 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 12344 12345 12346 2) iASL Compiler/Disassembler: 12347 12348 Implemented full support for Package objects within the Case() operator. 12349 Note: The Break() operator is currently not supported within Case blocks 12350 (TermLists) as there is some question about backward compatibility with 12351 ACPI 12352 1.0 interpreters. 12353 12354 12355 Fixed a problem where complex terms were not supported properly within 12356 the 12357 Switch() operator. 12358 12359 Eliminated extraneous warning for compiler-emitted reserved names of the 12360 form "_T_x". (Used in Switch/Case operators.) 12361 12362 Eliminated optimization messages for "_T_x" objects and small constants 12363 within the DefinitionBlock operator. 12364 12365 12366 ---------------------------------------- 12367 15 June 2004. Summary of changes for version 20040615: 12368 12369 1) ACPI CA Core Subsystem: 12370 12371 Implemented support for Buffer and String objects (as per ACPI 2.0) for 12372 the 12373 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 12374 LLessEqual. 12375 12376 All directory names in the entire source package are lower case, as they 12377 were in earlier releases. 12378 12379 Implemented "Disassemble" command in the AML debugger that will 12380 disassemble 12381 a single control method. 12382 12383 Code and Data Size: Current and previous core subsystem library sizes are 12384 shown below. These are the code and data sizes for the acpica.lib 12385 produced 12386 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12387 any ACPI driver or OSPM code. The debug version of the code includes the 12388 debug output trace mechanism and has a much larger code and data size. 12389 Note 12390 that these values will vary depending on the efficiency of the compiler 12391 and 12392 the compiler options used during generation. 12393 12394 Previous Release: 12395 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 12396 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 12397 12398 Current Release: 12399 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 12400 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 12401 12402 12403 2) iASL Compiler/Disassembler: 12404 12405 Implemented support for Buffer and String objects (as per ACPI 2.0) for 12406 the 12407 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 12408 LLessEqual. 12409 12410 All directory names in the entire source package are lower case, as they 12411 were in earlier releases. 12412 12413 Fixed a fault when using the -g or -d<nofilename> options if the FADT was 12414 not found. 12415 12416 Fixed an issue with the Windows version of the compiler where later 12417 versions 12418 of Windows place the FADT in the registry under the name "FADT" and not 12419 "FACP" as earlier versions did. This applies when using the -g or - 12420 d<nofilename> options. The compiler now looks for both strings as 12421 necessary. 12422 12423 Fixed a problem with compiler namepath optimization where a namepath 12424 within 12425 the Scope() operator could not be optimized if the namepath was a subpath 12426 of 12427 the current scope path. 12428 12429 ---------------------------------------- 12430 27 May 2004. Summary of changes for version 20040527: 12431 12432 1) ACPI CA Core Subsystem: 12433 12434 Completed a new design and implementation for EBDA (Extended BIOS Data 12435 Area) 12436 support in the RSDP scan code. The original code improperly scanned for 12437 the 12438 EBDA by simply scanning from memory location 0 to 0x400. The correct 12439 method 12440 is to first obtain the EBDA pointer from within the BIOS data area, then 12441 scan 1K of memory starting at the EBDA pointer. There appear to be few 12442 if 12443 any machines that place the RSDP in the EBDA, however. 12444 12445 Integrated a fix for a possible fault during evaluation of BufferField 12446 arguments. Obsolete code that was causing the problem was removed. 12447 12448 Found and fixed a problem in the Field Support Code where data could be 12449 corrupted on a bit field read that starts on an aligned boundary but does 12450 not end on an aligned boundary. Merged the read/write "datum length" 12451 calculation code into a common procedure. 12452 12453 Rolled in a couple of changes to the FreeBSD-specific header. 12454 12455 12456 Code and Data Size: Current and previous core subsystem library sizes are 12457 shown below. These are the code and data sizes for the acpica.lib 12458 produced 12459 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12460 any ACPI driver or OSPM code. The debug version of the code includes the 12461 debug output trace mechanism and has a much larger code and data size. 12462 Note 12463 that these values will vary depending on the efficiency of the compiler 12464 and 12465 the compiler options used during generation. 12466 12467 Previous Release: 12468 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 12469 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 12470 Current Release: 12471 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 12472 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 12473 12474 12475 2) iASL Compiler/Disassembler: 12476 12477 Fixed a generation warning produced by some overly-verbose compilers for 12478 a 12479 64-bit constant. 12480 12481 ---------------------------------------- 12482 14 May 2004. Summary of changes for version 20040514: 12483 12484 1) ACPI CA Core Subsystem: 12485 12486 Fixed a problem where hardware GPE enable bits sometimes not set properly 12487 during and after GPE method execution. Result of 04/27 changes. 12488 12489 Removed extra "clear all GPEs" when sleeping/waking. 12490 12491 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 12492 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above 12493 to 12494 the new AcpiEv* calls as appropriate. 12495 12496 ACPI_OS_NAME was removed from the OS-specific headers. The default name 12497 is 12498 now "Microsoft Windows NT" for maximum compatibility. However this can 12499 be 12500 changed by modifying the acconfig.h file. 12501 12502 Allow a single invocation of AcpiInstallNotifyHandler for a handler that 12503 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 12504 12505 Run _INI methods on ThermalZone objects. This is against the ACPI 12506 specification, but there is apparently ASL code in the field that has 12507 these 12508 _INI methods, and apparently "other" AML interpreters execute them. 12509 12510 Performed a full 16/32/64 bit lint that resulted in some small changes. 12511 12512 Added a sleep simulation command to the AML debugger to test sleep code. 12513 12514 Code and Data Size: Current and previous core subsystem library sizes are 12515 shown below. These are the code and data sizes for the acpica.lib 12516 produced 12517 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12518 any ACPI driver or OSPM code. The debug version of the code includes the 12519 debug output trace mechanism and has a much larger code and data size. 12520 Note 12521 that these values will vary depending on the efficiency of the compiler 12522 and 12523 the compiler options used during generation. 12524 12525 Previous Release: 12526 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 12527 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 12528 Current Release: 12529 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 12530 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 12531 12532 ---------------------------------------- 12533 27 April 2004. Summary of changes for version 20040427: 12534 12535 1) ACPI CA Core Subsystem: 12536 12537 Completed a major overhaul of the GPE handling within ACPI CA. There are 12538 now three types of GPEs: wake-only, runtime-only, and combination 12539 wake/run. 12540 The only GPEs allowed to be combination wake/run are for button-style 12541 devices such as a control-method power button, control-method sleep 12542 button, 12543 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are 12544 not 12545 referenced by any _PRW methods are marked for "runtime" and hardware 12546 enabled. Any GPE that is referenced by a _PRW method is marked for 12547 "wake" 12548 (and disabled at runtime). However, at sleep time, only those GPEs that 12549 have been specifically enabled for wake via the AcpiEnableGpe interface 12550 will 12551 actually be hardware enabled. 12552 12553 A new external interface has been added, AcpiSetGpeType(), that is meant 12554 to 12555 be used by device drivers to force a GPE to a particular type. It will 12556 be 12557 especially useful for the drivers for the button devices mentioned above. 12558 12559 Completed restructuring of the ACPI CA initialization sequence so that 12560 default operation region handlers are installed before GPEs are 12561 initialized 12562 and the _PRW methods are executed. This will prevent errors when the 12563 _PRW 12564 methods attempt to access system memory or I/O space. 12565 12566 GPE enable/disable no longer reads the GPE enable register. We now keep 12567 the 12568 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 12569 thus no longer depend on the hardware to maintain these bits. 12570 12571 Always clear the wake status and fixed/GPE status bits before sleep, even 12572 for state S5. 12573 12574 Improved the AML debugger output for displaying the GPE blocks and their 12575 current status. 12576 12577 Added new strings for the _OSI method, of the form "Windows 2001 SPx" 12578 where 12579 x = 0,1,2,3,4. 12580 12581 Fixed a problem where the physical address was incorrectly calculated 12582 when 12583 the Load() operator was used to directly load from an Operation Region 12584 (vs. 12585 loading from a Field object.) Also added check for minimum table length 12586 for 12587 this case. 12588 12589 Fix for multiple mutex acquisition. Restore original thread SyncLevel on 12590 mutex release. 12591 12592 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 12593 consistency with the other fields returned. 12594 12595 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 12596 structure for each GPE in the system, so the size of this structure is 12597 important. 12598 12599 CPU stack requirement reduction: Cleaned up the method execution and 12600 object 12601 evaluation paths so that now a parameter structure is passed, instead of 12602 copying the various method parameters over and over again. 12603 12604 In evregion.c: Correctly exit and reenter the interpreter region if and 12605 only if dispatching an operation region request to a user-installed 12606 handler. 12607 Do not exit/reenter when dispatching to a default handler (e.g., default 12608 system memory or I/O handlers) 12609 12610 12611 Notes for updating drivers for the new GPE support. The following 12612 changes 12613 must be made to ACPI-related device drivers that are attached to one or 12614 more 12615 GPEs: (This information will be added to the ACPI CA Programmer 12616 Reference.) 12617 12618 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you 12619 must 12620 explicitly call AcpiEnableGpe. 12621 2) There is a new interface called AcpiSetGpeType. This should be called 12622 before enabling the GPE. Also, this interface will automatically disable 12623 the GPE if it is currently enabled. 12624 3) AcpiEnableGpe no longer supports a GPE type flag. 12625 12626 Specific drivers that must be changed: 12627 1) EC driver: 12628 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 12629 AeGpeHandler, NULL); 12630 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 12631 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 12632 12633 2) Button Drivers (Power, Lid, Sleep): 12634 Run _PRW method under parent device 12635 If _PRW exists: /* This is a control-method button */ 12636 Extract GPE number and possibly GpeDevice 12637 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 12638 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 12639 12640 For all other devices that have _PRWs, we automatically set the GPE type 12641 to 12642 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. 12643 This 12644 must be done on a selective basis, usually requiring some kind of user 12645 app 12646 to allow the user to pick the wake devices. 12647 12648 12649 Code and Data Size: Current and previous core subsystem library sizes are 12650 shown below. These are the code and data sizes for the acpica.lib 12651 produced 12652 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12653 any ACPI driver or OSPM code. The debug version of the code includes the 12654 debug output trace mechanism and has a much larger code and data size. 12655 Note 12656 that these values will vary depending on the efficiency of the compiler 12657 and 12658 the compiler options used during generation. 12659 12660 Previous Release: 12661 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 12662 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 12663 Current Release: 12664 12665 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 12666 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 12667 12668 12669 12670 ---------------------------------------- 12671 02 April 2004. Summary of changes for version 20040402: 12672 12673 1) ACPI CA Core Subsystem: 12674 12675 Fixed an interpreter problem where an indirect store through an ArgX 12676 parameter was incorrectly applying the "implicit conversion rules" during 12677 the store. From the ACPI specification: "If the target is a method local 12678 or 12679 argument (LocalX or ArgX), no conversion is performed and the result is 12680 stored directly to the target". The new behavior is to disable implicit 12681 conversion during ALL stores to an ArgX. 12682 12683 Changed the behavior of the _PRW method scan to ignore any and all errors 12684 returned by a given _PRW. This prevents the scan from aborting from the 12685 failure of any single _PRW. 12686 12687 Moved the runtime configuration parameters from the global init procedure 12688 to 12689 static variables in acglobal.h. This will allow the host to override the 12690 default values easily. 12691 12692 Code and Data Size: Current and previous core subsystem library sizes are 12693 shown below. These are the code and data sizes for the acpica.lib 12694 produced 12695 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12696 any ACPI driver or OSPM code. The debug version of the code includes the 12697 debug output trace mechanism and has a much larger code and data size. 12698 Note 12699 that these values will vary depending on the efficiency of the compiler 12700 and 12701 the compiler options used during generation. 12702 12703 Previous Release: 12704 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 12705 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 12706 Current Release: 12707 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 12708 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 12709 12710 12711 2) iASL Compiler/Disassembler: 12712 12713 iASL now fully disassembles SSDTs. However, External() statements are 12714 not 12715 generated automatically for unresolved symbols at this time. This is a 12716 planned feature for future implementation. 12717 12718 Fixed a scoping problem in the disassembler that occurs when the type of 12719 the 12720 target of a Scope() operator is overridden. This problem caused an 12721 incorrectly nested internal namespace to be constructed. 12722 12723 Any warnings or errors that are emitted during disassembly are now 12724 commented 12725 out automatically so that the resulting file can be recompiled without 12726 any 12727 hand editing. 12728 12729 ---------------------------------------- 12730 26 March 2004. Summary of changes for version 20040326: 12731 12732 1) ACPI CA Core Subsystem: 12733 12734 Implemented support for "wake" GPEs via interaction between GPEs and the 12735 _PRW methods. Every GPE that is pointed to by one or more _PRWs is 12736 identified as a WAKE GPE and by default will no longer be enabled at 12737 runtime. Previously, we were blindly enabling all GPEs with a 12738 corresponding 12739 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. 12740 We 12741 believe this has been the cause of thousands of "spurious" GPEs on some 12742 systems. 12743 12744 This new GPE behavior is can be reverted to the original behavior (enable 12745 ALL GPEs at runtime) via a runtime flag. 12746 12747 Fixed a problem where aliased control methods could not access objects 12748 properly. The proper scope within the namespace was not initialized 12749 (transferred to the target of the aliased method) before executing the 12750 target method. 12751 12752 Fixed a potential race condition on internal object deletion on the 12753 return 12754 object in AcpiEvaluateObject. 12755 12756 Integrated a fix for resource descriptors where both _MEM and _MTP were 12757 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 12758 wide, 0x0F instead of 0x03.) 12759 12760 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, 12761 preventing 12762 a 12763 fault in some cases. 12764 12765 Updated Notify() values for debug statements in evmisc.c 12766 12767 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 12768 12769 Code and Data Size: Current and previous core subsystem library sizes are 12770 shown below. These are the code and data sizes for the acpica.lib 12771 produced 12772 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12773 any ACPI driver or OSPM code. The debug version of the code includes the 12774 debug output trace mechanism and has a much larger code and data size. 12775 Note 12776 that these values will vary depending on the efficiency of the compiler 12777 and 12778 the compiler options used during generation. 12779 12780 Previous Release: 12781 12782 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 12783 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 12784 Current Release: 12785 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 12786 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 12787 12788 ---------------------------------------- 12789 11 March 2004. Summary of changes for version 20040311: 12790 12791 1) ACPI CA Core Subsystem: 12792 12793 Fixed a problem where errors occurring during the parse phase of control 12794 method execution did not abort cleanly. For example, objects created and 12795 installed in the namespace were not deleted. This caused all subsequent 12796 invocations of the method to return the AE_ALREADY_EXISTS exception. 12797 12798 Implemented a mechanism to force a control method to "Serialized" 12799 execution 12800 if the method attempts to create namespace objects. (The root of the 12801 AE_ALREADY_EXISTS problem.) 12802 12803 Implemented support for the predefined _OSI "internal" control method. 12804 Initial supported strings are "Linux", "Windows 2000", "Windows 2001", 12805 and 12806 "Windows 2001.1", and can be easily upgraded for new strings as 12807 necessary. 12808 This feature will allow "other" operating systems to execute the fully 12809 tested, "Windows" code path through the ASL code 12810 12811 Global Lock Support: Now allows multiple acquires and releases with any 12812 internal thread. Removed concept of "owning thread" for this special 12813 mutex. 12814 12815 Fixed two functions that were inappropriately declaring large objects on 12816 the 12817 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage 12818 during 12819 method execution considerably. 12820 12821 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 12822 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 12823 12824 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 12825 defined on the machine. 12826 12827 Implemented two runtime options: One to force all control method 12828 execution 12829 to "Serialized" to mimic Windows behavior, another to disable _OSI 12830 support 12831 if it causes problems on a given machine. 12832 12833 Code and Data Size: Current and previous core subsystem library sizes are 12834 shown below. These are the code and data sizes for the acpica.lib 12835 produced 12836 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12837 any ACPI driver or OSPM code. The debug version of the code includes the 12838 debug output trace mechanism and has a much larger code and data size. 12839 Note 12840 that these values will vary depending on the efficiency of the compiler 12841 and 12842 the compiler options used during generation. 12843 12844 Previous Release: 12845 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 12846 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 12847 Current Release: 12848 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 12849 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 12850 12851 2) iASL Compiler/Disassembler: 12852 12853 Fixed an array size problem for FreeBSD that would cause the compiler to 12854 fault. 12855 12856 ---------------------------------------- 12857 20 February 2004. Summary of changes for version 20040220: 12858 12859 12860 1) ACPI CA Core Subsystem: 12861 12862 Implemented execution of _SxD methods for Device objects in the 12863 GetObjectInfo interface. 12864 12865 Fixed calls to _SST method to pass the correct arguments. 12866 12867 Added a call to _SST on wake to restore to "working" state. 12868 12869 Check for End-Of-Buffer failure case in the WalkResources interface. 12870 12871 Integrated fix for 64-bit alignment issue in acglobal.h by moving two 12872 structures to the beginning of the file. 12873 12874 After wake, clear GPE status register(s) before enabling GPEs. 12875 12876 After wake, clear/enable power button. (Perhaps we should clear/enable 12877 all 12878 fixed events upon wake.) 12879 12880 Fixed a couple of possible memory leaks in the Namespace manager. 12881 12882 Integrated latest acnetbsd.h file. 12883 12884 ---------------------------------------- 12885 11 February 2004. Summary of changes for version 20040211: 12886 12887 12888 1) ACPI CA Core Subsystem: 12889 12890 Completed investigation and implementation of the call-by-reference 12891 mechanism for control method arguments. 12892 12893 Fixed a problem where a store of an object into an indexed package could 12894 fail if the store occurs within a different method than the method that 12895 created the package. 12896 12897 Fixed a problem where the ToDecimal operator could return incorrect 12898 results. 12899 12900 Fixed a problem where the CopyObject operator could fail on some of the 12901 more 12902 obscure objects (e.g., Reference objects.) 12903 12904 Improved the output of the Debug object to display buffer, package, and 12905 index objects. 12906 12907 Fixed a problem where constructs of the form "RefOf (ArgX)" did not 12908 return 12909 the expected result. 12910 12911 Added permanent ACPI_REPORT_ERROR macros for all instances of the 12912 ACPI_AML_INTERNAL exception. 12913 12914 Integrated latest version of acfreebsd.h 12915 12916 ---------------------------------------- 12917 16 January 2004. Summary of changes for version 20040116: 12918 12919 The purpose of this release is primarily to update the copyright years in 12920 each module, thus causing a huge number of diffs. There are a few small 12921 functional changes, however. 12922 12923 1) ACPI CA Core Subsystem: 12924 12925 Improved error messages when there is a problem finding one or more of 12926 the 12927 required base ACPI tables 12928 12929 Reintroduced the definition of APIC_HEADER in actbl.h 12930 12931 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 12932 12933 Removed extraneous reference to NewObj in dsmthdat.c 12934 12935 2) iASL compiler 12936 12937 Fixed a problem introduced in December that disabled the correct 12938 disassembly 12939 of Resource Templates 12940 12941 12942 ---------------------------------------- 12943 03 December 2003. Summary of changes for version 20031203: 12944 12945 1) ACPI CA Core Subsystem: 12946 12947 Changed the initialization of Operation Regions during subsystem 12948 init to perform two entire walks of the ACPI namespace; The first 12949 to initialize the regions themselves, the second to execute the 12950 _REG methods. This fixed some interdependencies across _REG 12951 methods found on some machines. 12952 12953 Fixed a problem where a Store(Local0, Local1) could simply update 12954 the object reference count, and not create a new copy of the 12955 object if the Local1 is uninitialized. 12956 12957 Implemented support for the _SST reserved method during sleep 12958 transitions. 12959 12960 Implemented support to clear the SLP_TYP and SLP_EN bits when 12961 waking up, this is apparently required by some machines. 12962 12963 When sleeping, clear the wake status only if SleepState is not S5. 12964 12965 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 12966 pointer arithmetic advanced a string pointer too far. 12967 12968 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 12969 could be returned if the requested table has not been loaded. 12970 12971 Within the support for IRQ resources, restructured the handling of 12972 the active and edge/level bits. 12973 12974 Fixed a few problems in AcpiPsxExecute() where memory could be 12975 leaked under certain error conditions. 12976 12977 Improved error messages for the cases where the ACPI mode could 12978 not be entered. 12979 12980 Code and Data Size: Current and previous core subsystem library 12981 sizes are shown below. These are the code and data sizes for the 12982 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12983 these values do not include any ACPI driver or OSPM code. The 12984 debug version of the code includes the debug output trace 12985 mechanism and has a much larger code and data size. Note that 12986 these values will vary depending on the efficiency of the compiler 12987 and the compiler options used during generation. 12988 12989 Previous Release (20031029): 12990 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 12991 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 12992 Current Release: 12993 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 12994 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 12995 12996 2) iASL Compiler/Disassembler: 12997 12998 Implemented a fix for the iASL disassembler where a bad index was 12999 generated. This was most noticeable on 64-bit platforms 13000 13001 13002 ---------------------------------------- 13003 29 October 2003. Summary of changes for version 20031029: 13004 13005 1) ACPI CA Core Subsystem: 13006 13007 13008 Fixed a problem where a level-triggered GPE with an associated 13009 _Lxx control method was incorrectly cleared twice. 13010 13011 Fixed a problem with the Field support code where an access can 13012 occur beyond the end-of-region if the field is non-aligned but 13013 extends to the very end of the parent region (resulted in an 13014 AE_AML_REGION_LIMIT exception.) 13015 13016 Fixed a problem with ACPI Fixed Events where an RT Clock handler 13017 would not get invoked on an RTC event. The RTC event bitmasks for 13018 the PM1 registers were not being initialized properly. 13019 13020 Implemented support for executing _STA and _INI methods for 13021 Processor objects. Although this is currently not part of the 13022 ACPI specification, there is existing ASL code that depends on the 13023 init-time execution of these methods. 13024 13025 Implemented and deployed a GetDescriptorName function to decode 13026 the various types of internal descriptors. Guards against null 13027 descriptors during debug output also. 13028 13029 Implemented and deployed a GetNodeName function to extract the 4- 13030 character namespace node name. This function simplifies the debug 13031 and error output, as well as guarding against null pointers during 13032 output. 13033 13034 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 13035 simplify the debug and error output of 64-bit integers. This 13036 macro replaces the HIDWORD and LODWORD macros for dumping these 13037 integers. 13038 13039 Updated the implementation of the Stall() operator to only call 13040 AcpiOsStall(), and also return an error if the operand is larger 13041 than 255. This preserves the required behavior of not 13042 relinquishing the processor, as would happen if AcpiOsSleep() was 13043 called for "long stalls". 13044 13045 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 13046 initialized are now treated as NOOPs. 13047 13048 Cleaned up a handful of warnings during 64-bit generation. 13049 13050 Fixed a reported error where and incorrect GPE number was passed 13051 to the GPE dispatch handler. This value is only used for error 13052 output, however. Used this opportunity to clean up and streamline 13053 the GPE dispatch code. 13054 13055 Code and Data Size: Current and previous core subsystem library 13056 sizes are shown below. These are the code and data sizes for the 13057 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13058 these values do not include any ACPI driver or OSPM code. The 13059 13060 debug version of the code includes the debug output trace 13061 mechanism and has a much larger code and data size. Note that 13062 these values will vary depending on the efficiency of the compiler 13063 and the compiler options used during generation. 13064 13065 Previous Release (20031002): 13066 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 13067 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 13068 Current Release: 13069 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 13070 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 13071 13072 13073 2) iASL Compiler/Disassembler: 13074 13075 Updated the iASL compiler to return an error if the operand to the 13076 Stall() operator is larger than 255. 13077 13078 13079 ---------------------------------------- 13080 02 October 2003. Summary of changes for version 20031002: 13081 13082 13083 1) ACPI CA Core Subsystem: 13084 13085 Fixed a problem with Index Fields where the index was not 13086 incremented for fields that require multiple writes to the 13087 index/data registers (Fields that are wider than the data 13088 register.) 13089 13090 Fixed a problem with all Field objects where a write could go 13091 beyond the end-of-field if the field was larger than the access 13092 granularity and therefore required multiple writes to complete the 13093 request. An extra write beyond the end of the field could happen 13094 inadvertently. 13095 13096 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 13097 would incorrectly be returned if the width of the Data Register 13098 was larger than the specified field access width. 13099 13100 Completed fixes for LoadTable() and Unload() and verified their 13101 operation. Implemented full support for the "DdbHandle" object 13102 throughout the ACPI CA subsystem. 13103 13104 Implemented full support for the MADT and ECDT tables in the ACPI 13105 CA header files. Even though these tables are not directly 13106 consumed by ACPI CA, the header definitions are useful for ACPI 13107 device drivers. 13108 13109 Integrated resource descriptor fixes posted to the Linux ACPI 13110 list. This included checks for minimum descriptor length, and 13111 support for trailing NULL strings within descriptors that have 13112 optional string elements. 13113 13114 Code and Data Size: Current and previous core subsystem library 13115 sizes are shown below. These are the code and data sizes for the 13116 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13117 these values do not include any ACPI driver or OSPM code. The 13118 debug version of the code includes the debug output trace 13119 mechanism and has a much larger code and data size. Note that 13120 these values will vary depending on the efficiency of the compiler 13121 and the compiler options used during generation. 13122 13123 Previous Release (20030918): 13124 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 13125 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 13126 Current Release: 13127 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 13128 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 13129 13130 13131 2) iASL Compiler: 13132 13133 Implemented detection of non-ASCII characters within the input 13134 source ASL file. This catches attempts to compile binary (AML) 13135 files early in the compile, with an informative error message. 13136 13137 Fixed a problem where the disassembler would fault if the output 13138 filename could not be generated or if the output file could not be 13139 opened. 13140 13141 ---------------------------------------- 13142 18 September 2003. Summary of changes for version 20030918: 13143 13144 13145 1) ACPI CA Core Subsystem: 13146 13147 Found and fixed a longstanding problem with the late execution of 13148 the various deferred AML opcodes (such as Operation Regions, 13149 Buffer Fields, Buffers, and Packages). If the name string 13150 specified for the name of the new object placed the object in a 13151 scope other than the current scope, the initialization/execution 13152 of the opcode failed. The solution to this problem was to 13153 implement a mechanism where the late execution of such opcodes 13154 does not attempt to lookup/create the name a second time in an 13155 incorrect scope. This fixes the "region size computed 13156 incorrectly" problem. 13157 13158 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 13159 Global Lock AE_BAD_PARAMETER error. 13160 13161 Fixed several 64-bit issues with prototypes, casting and data 13162 types. 13163 13164 Removed duplicate prototype from acdisasm.h 13165 13166 Fixed an issue involving EC Operation Region Detach (Shaohua Li) 13167 13168 Code and Data Size: Current and previous core subsystem library 13169 sizes are shown below. These are the code and data sizes for the 13170 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13171 these values do not include any ACPI driver or OSPM code. The 13172 debug version of the code includes the debug output trace 13173 mechanism and has a much larger code and data size. Note that 13174 these values will vary depending on the efficiency of the compiler 13175 and the compiler options used during generation. 13176 13177 Previous Release: 13178 13179 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 13180 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 13181 Current Release: 13182 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 13183 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 13184 13185 13186 2) Linux: 13187 13188 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 13189 correct sleep time in seconds. 13190 13191 ---------------------------------------- 13192 14 July 2003. Summary of changes for version 20030619: 13193 13194 1) ACPI CA Core Subsystem: 13195 13196 Parse SSDTs in order discovered, as opposed to reverse order 13197 (Hrvoje Habjanic) 13198 13199 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 13200 Klausner, 13201 Nate Lawson) 13202 13203 13204 2) Linux: 13205 13206 Dynamically allocate SDT list (suggested by Andi Kleen) 13207 13208 proc function return value cleanups (Andi Kleen) 13209 13210 Correctly handle NMI watchdog during long stalls (Andrew Morton) 13211 13212 Make it so acpismp=force works (reported by Andrew Morton) 13213 13214 13215 ---------------------------------------- 13216 19 June 2003. Summary of changes for version 20030619: 13217 13218 1) ACPI CA Core Subsystem: 13219 13220 Fix To/FromBCD, eliminating the need for an arch-specific #define. 13221 13222 Do not acquire a semaphore in the S5 shutdown path. 13223 13224 Fix ex_digits_needed for 0. (Takayoshi Kochi) 13225 13226 Fix sleep/stall code reversal. (Andi Kleen) 13227 13228 Revert a change having to do with control method calling 13229 semantics. 13230 13231 2) Linux: 13232 13233 acpiphp update (Takayoshi Kochi) 13234 13235 Export acpi_disabled for sonypi (Stelian Pop) 13236 13237 Mention acpismp=force in config help 13238 13239 Re-add acpitable.c and acpismp=force. This improves backwards 13240 13241 compatibility and also cleans up the code to a significant degree. 13242 13243 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 13244 13245 ---------------------------------------- 13246 22 May 2003. Summary of changes for version 20030522: 13247 13248 1) ACPI CA Core Subsystem: 13249 13250 Found and fixed a reported problem where an AE_NOT_FOUND error 13251 occurred occasionally during _BST evaluation. This turned out to 13252 be an Owner ID allocation issue where a called method did not get 13253 a new ID assigned to it. Eventually, (after 64k calls), the Owner 13254 ID UINT16 would wraparound so that the ID would be the same as the 13255 caller's and the called method would delete the caller's 13256 namespace. 13257 13258 Implemented extended error reporting for control methods that are 13259 aborted due to a run-time exception. Output includes the exact 13260 AML instruction that caused the method abort, a dump of the method 13261 locals and arguments at the time of the abort, and a trace of all 13262 nested control method calls. 13263 13264 Modified the interpreter to allow the creation of buffers of zero 13265 length from the AML code. Implemented new code to ensure that no 13266 attempt is made to actually allocate a memory buffer (of length 13267 zero) - instead, a simple buffer object with a NULL buffer pointer 13268 and length zero is created. A warning is no longer issued when 13269 the AML attempts to create a zero-length buffer. 13270 13271 Implemented a workaround for the "leading asterisk issue" in 13272 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 13273 asterisk is automatically removed if present in any HID, UID, or 13274 CID strings. The iASL compiler will still flag this asterisk as 13275 an error, however. 13276 13277 Implemented full support for _CID methods that return a package of 13278 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 13279 now additionally returns a device _CID list if present. This 13280 required a change to the external interface in order to pass an 13281 ACPI_BUFFER object as a parameter since the _CID list is of 13282 variable length. 13283 13284 Fixed a problem with the new AE_SAME_HANDLER exception where 13285 handler initialization code did not know about this exception. 13286 13287 Code and Data Size: Current and previous core subsystem library 13288 sizes are shown below. These are the code and data sizes for the 13289 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13290 these values do not include any ACPI driver or OSPM code. The 13291 debug version of the code includes the debug output trace 13292 mechanism and has a much larger code and data size. Note that 13293 these values will vary depending on the efficiency of the compiler 13294 and the compiler options used during generation. 13295 13296 Previous Release (20030509): 13297 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 13298 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 13299 Current Release: 13300 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 13301 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 13302 13303 13304 2) Linux: 13305 13306 Fixed a bug in which we would reinitialize the ACPI interrupt 13307 after it was already working, thus disabling all ACPI and the IRQs 13308 for any other device sharing the interrupt. (Thanks to Stian 13309 Jordet) 13310 13311 Toshiba driver update (John Belmonte) 13312 13313 Return only 0 or 1 for our interrupt handler status (Andrew 13314 Morton) 13315 13316 13317 3) iASL Compiler: 13318 13319 Fixed a reported problem where multiple (nested) ElseIf() 13320 statements were not handled correctly by the compiler, resulting 13321 in incorrect warnings and incorrect AML code. This was a problem 13322 in both the ASL parser and the code generator. 13323 13324 13325 4) Documentation: 13326 13327 Added changes to existing interfaces, new exception codes, and new 13328 text concerning reference count object management versus garbage 13329 collection. 13330 13331 ---------------------------------------- 13332 09 May 2003. Summary of changes for version 20030509. 13333 13334 13335 1) ACPI CA Core Subsystem: 13336 13337 Changed the subsystem initialization sequence to hold off 13338 installation of address space handlers until the hardware has been 13339 initialized and the system has entered ACPI mode. This is because 13340 the installation of space handlers can cause _REG methods to be 13341 run. Previously, the _REG methods could potentially be run before 13342 ACPI mode was enabled. 13343 13344 Fixed some memory leak issues related to address space handler and 13345 notify handler installation. There were some problems with the 13346 reference count mechanism caused by the fact that the handler 13347 objects are shared across several namespace objects. 13348 13349 Fixed a reported problem where reference counts within the 13350 namespace were not properly updated when named objects created by 13351 method execution were deleted. 13352 13353 Fixed a reported problem where multiple SSDTs caused a deletion 13354 issue during subsystem termination. Restructured the table data 13355 structures to simplify the linked lists and the related code. 13356 13357 Fixed a problem where the table ID associated with secondary 13358 tables (SSDTs) was not being propagated into the namespace objects 13359 created by those tables. This would only present a problem for 13360 tables that are unloaded at run-time, however. 13361 13362 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 13363 type as the length parameter (instead of UINT32). 13364 13365 Solved a long-standing problem where an ALREADY_EXISTS error 13366 appears on various systems. This problem could happen when there 13367 are multiple PCI_Config operation regions under a single PCI root 13368 bus. This doesn't happen very frequently, but there are some 13369 systems that do this in the ASL. 13370 13371 Fixed a reported problem where the internal DeleteNode function 13372 was incorrectly handling the case where a namespace node was the 13373 first in the parent's child list, and had additional peers (not 13374 the only child, but first in the list of children.) 13375 13376 Code and Data Size: Current core subsystem library sizes are shown 13377 below. These are the code and data sizes for the acpica.lib 13378 produced by the Microsoft Visual C++ 6.0 compiler, and these 13379 values do not include any ACPI driver or OSPM code. The debug 13380 version of the code includes the debug output trace mechanism and 13381 has a much larger code and data size. Note that these values will 13382 vary depending on the efficiency of the compiler and the compiler 13383 options used during generation. 13384 13385 Previous Release 13386 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 13387 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 13388 Current Release: 13389 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 13390 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 13391 13392 13393 2) Linux: 13394 13395 Allow ":" in OS override string (Ducrot Bruno) 13396 13397 Kobject fix (Greg KH) 13398 13399 13400 3 iASL Compiler/Disassembler: 13401 13402 Fixed a problem in the generation of the C source code files (AML 13403 is emitted in C source statements for BIOS inclusion) where the 13404 Ascii dump that appears within a C comment at the end of each line 13405 could cause a compile time error if the AML sequence happens to 13406 have an open comment or close comment sequence embedded. 13407 13408 13409 ---------------------------------------- 13410 24 April 2003. Summary of changes for version 20030424. 13411 13412 13413 1) ACPI CA Core Subsystem: 13414 13415 Support for big-endian systems has been implemented. Most of the 13416 support has been invisibly added behind big-endian versions of the 13417 ACPI_MOVE_* macros. 13418 13419 Fixed a problem in AcpiHwDisableGpeBlock() and 13420 AcpiHwClearGpeBlock() where an incorrect offset was passed to the 13421 low level hardware write routine. The offset parameter was 13422 actually eliminated from the low level read/write routines because 13423 they had become obsolete. 13424 13425 Fixed a problem where a handler object was deleted twice during 13426 the removal of a fixed event handler. 13427 13428 13429 2) Linux: 13430 13431 A fix for SMP systems with link devices was contributed by 13432 13433 Compaq's Dan Zink. 13434 13435 (2.5) Return whether we handled the interrupt in our IRQ handler. 13436 (Linux ISRs no longer return void, so we can propagate the handler 13437 return value from the ACPI CA core back to the OS.) 13438 13439 13440 13441 3) Documentation: 13442 13443 The ACPI CA Programmer Reference has been updated to reflect new 13444 interfaces and changes to existing interfaces. 13445 13446 ---------------------------------------- 13447 28 March 2003. Summary of changes for version 20030328. 13448 13449 1) ACPI CA Core Subsystem: 13450 13451 The GPE Block Device support has been completed. New interfaces 13452 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 13453 interfaces (enable, disable, clear, getstatus) have been split 13454 into separate interfaces for Fixed Events and General Purpose 13455 Events (GPEs) in order to support GPE Block Devices properly. 13456 13457 Fixed a problem where the error message "Failed to acquire 13458 semaphore" would appear during operations on the embedded 13459 controller (EC). 13460 13461 Code and Data Size: Current core subsystem library sizes are shown 13462 below. These are the code and data sizes for the acpica.lib 13463 produced by the Microsoft Visual C++ 6.0 compiler, and these 13464 values do not include any ACPI driver or OSPM code. The debug 13465 version of the code includes the debug output trace mechanism and 13466 has a much larger code and data size. Note that these values will 13467 vary depending on the efficiency of the compiler and the compiler 13468 options used during generation. 13469 13470 Previous Release 13471 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 13472 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 13473 Current Release: 13474 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 13475 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 13476 13477 13478 ---------------------------------------- 13479 28 February 2003. Summary of changes for version 20030228. 13480 13481 13482 1) ACPI CA Core Subsystem: 13483 13484 The GPE handling and dispatch code has been completely overhauled 13485 in preparation for support of GPE Block Devices (ID ACPI0006). 13486 This affects internal data structures and code only; there should 13487 be no differences visible externally. One new file has been 13488 added, evgpeblk.c 13489 13490 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 13491 fields that are used to determine the GPE block lengths. The 13492 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 13493 structures are ignored. This is per the ACPI specification but it 13494 isn't very clear. The full 256 Block 0/1 GPEs are now supported 13495 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 13496 13497 In the SCI interrupt handler, removed the read of the PM1_CONTROL 13498 register to look at the SCI_EN bit. On some machines, this read 13499 causes an SMI event and greatly slows down SCI events. (This may 13500 in fact be the cause of slow battery status response on some 13501 systems.) 13502 13503 Fixed a problem where a store of a NULL string to a package object 13504 could cause the premature deletion of the object. This was seen 13505 during execution of the battery _BIF method on some systems, 13506 resulting in no battery data being returned. 13507 13508 Added AcpiWalkResources interface to simplify parsing of resource 13509 lists. 13510 13511 Code and Data Size: Current core subsystem library sizes are shown 13512 below. These are the code and data sizes for the acpica.lib 13513 produced by the Microsoft Visual C++ 6.0 compiler, and these 13514 values do not include any ACPI driver or OSPM code. The debug 13515 version of the code includes the debug output trace mechanism and 13516 has a much larger code and data size. Note that these values will 13517 vary depending on the efficiency of the compiler and the compiler 13518 options used during generation. 13519 13520 Previous Release 13521 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 13522 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 13523 Current Release: 13524 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 13525 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 13526 13527 13528 2) Linux 13529 13530 S3 fixes (Ole Rohne) 13531 13532 Update ACPI PHP driver with to use new acpi_walk_resource API 13533 (Bjorn Helgaas) 13534 13535 Add S4BIOS support (Pavel Machek) 13536 13537 Map in entire table before performing checksum (John Stultz) 13538 13539 Expand the mem= cmdline to allow the specification of reserved and 13540 ACPI DATA blocks (Pavel Machek) 13541 13542 Never use ACPI on VISWS 13543 13544 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 13545 13546 Revert a change that allowed P_BLK lengths to be 4 or 5. This is 13547 causing us to think that some systems support C2 when they really 13548 don't. 13549 13550 Do not count processor objects for non-present CPUs (Thanks to 13551 Dominik Brodowski) 13552 13553 13554 3) iASL Compiler: 13555 13556 Fixed a problem where ASL include files could not be found and 13557 opened. 13558 13559 Added support for the _PDC reserved name. 13560 13561 13562 ---------------------------------------- 13563 22 January 2003. Summary of changes for version 20030122. 13564 13565 13566 1) ACPI CA Core Subsystem: 13567 13568 Added a check for constructs of the form: Store (Local0, Local0) 13569 where Local0 is not initialized. Apparently, some BIOS 13570 programmers believe that this is a NOOP. Since this store doesn't 13571 do anything anyway, the new prototype behavior will ignore this 13572 error. This is a case where we can relax the strict checking in 13573 the interpreter in the name of compatibility. 13574 13575 13576 2) Linux 13577 13578 The AcpiSrc Source Conversion Utility has been released with the 13579 Linux package for the first time. This is the utility that is 13580 used to convert the ACPI CA base source code to the Linux version. 13581 13582 (Both) Handle P_BLK lengths shorter than 6 more gracefully 13583 13584 (Both) Move more headers to include/acpi, and delete an unused 13585 header. 13586 13587 (Both) Move drivers/acpi/include directory to include/acpi 13588 13589 (Both) Boot functions don't use cmdline, so don't pass it around 13590 13591 (Both) Remove include of unused header (Adrian Bunk) 13592 13593 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 13594 the 13595 former now also includes the latter, acpiphp.h only needs the one, 13596 now. 13597 13598 (2.5) Make it possible to select method of bios restoring after S3 13599 resume. [=> no more ugly ifdefs] (Pavel Machek) 13600 13601 (2.5) Make proc write interfaces work (Pavel Machek) 13602 13603 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 13604 13605 (2.5) Break out ACPI Perf code into its own module, under cpufreq 13606 (Dominik Brodowski) 13607 13608 (2.4) S4BIOS support (Ducrot Bruno) 13609 13610 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 13611 Visinoni) 13612 13613 13614 3) iASL Compiler: 13615 13616 Added support to disassemble SSDT and PSDTs. 13617 13618 Implemented support to obtain SSDTs from the Windows registry if 13619 available. 13620 13621 13622 ---------------------------------------- 13623 09 January 2003. Summary of changes for version 20030109. 13624 13625 1) ACPI CA Core Subsystem: 13626 13627 Changed the behavior of the internal Buffer-to-String conversion 13628 function. The current ACPI specification states that the contents 13629 of the buffer are "converted to a string of two-character 13630 hexadecimal numbers, each separated by a space". Unfortunately, 13631 this definition is not backwards compatible with existing ACPI 1.0 13632 implementations (although the behavior was not defined in the ACPI 13633 1.0 specification). The new behavior simply copies data from the 13634 buffer to the string until a null character is found or the end of 13635 the buffer is reached. The new String object is always null 13636 terminated. This problem was seen during the generation of _BIF 13637 battery data where incorrect strings were returned for battery 13638 type, etc. This will also require an errata to the ACPI 13639 specification. 13640 13641 Renamed all instances of NATIVE_UINT and NATIVE_INT to 13642 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 13643 13644 Copyright in all module headers (both Linux and non-Linux) has be 13645 updated to 2003. 13646 13647 Code and Data Size: Current core subsystem library sizes are shown 13648 below. These are the code and data sizes for the acpica.lib 13649 produced by the Microsoft Visual C++ 6.0 compiler, and these 13650 values do not include any ACPI driver or OSPM code. The debug 13651 version of the code includes the debug output trace mechanism and 13652 has a much larger code and data size. Note that these values will 13653 vary depending on the efficiency of the compiler and the compiler 13654 options used during generation. 13655 13656 Previous Release 13657 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 13658 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 13659 Current Release: 13660 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 13661 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 13662 13663 13664 2) Linux 13665 13666 Fixed an oops on module insertion/removal (Matthew Tippett) 13667 13668 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 13669 13670 (2.5) Replace pr_debug (Randy Dunlap) 13671 13672 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 13673 13674 (Both) Eliminate spawning of thread from timer callback, in favor 13675 of schedule_work() 13676 13677 (Both) Show Lid status in /proc (Zdenek OGAR Skalak) 13678 13679 (Both) Added define for Fixed Function HW region (Matthew Wilcox) 13680 13681 (Both) Add missing statics to button.c (Pavel Machek) 13682 13683 Several changes have been made to the source code translation 13684 utility that generates the Linux Code in order to make the code 13685 more "Linux-like": 13686 13687 All typedefs on structs and unions have been removed in keeping 13688 with the Linux coding style. 13689 13690 Removed the non-Linux SourceSafe module revision number from each 13691 module header. 13692 13693 Completed major overhaul of symbols to be lowercased for linux. 13694 Doubled the number of symbols that are lowercased. 13695 13696 Fixed a problem where identifiers within procedure headers and 13697 within quotes were not fully lower cased (they were left with a 13698 starting capital.) 13699 13700 Some C macros whose only purpose is to allow the generation of 16- 13701 bit code are now completely removed in the Linux code, increasing 13702 readability and maintainability. 13703 13704 ---------------------------------------- 13705 13706 12 December 2002. Summary of changes for version 20021212. 13707 13708 13709 1) ACPI CA Core Subsystem: 13710 13711 Fixed a problem where the creation of a zero-length AML Buffer 13712 would cause a fault. 13713 13714 Fixed a problem where a Buffer object that pointed to a static AML 13715 buffer (in an ACPI table) could inadvertently be deleted, causing 13716 memory corruption. 13717 13718 Fixed a problem where a user buffer (passed in to the external 13719 ACPI CA interfaces) could be overwritten if the buffer was too 13720 small to complete the operation, causing memory corruption. 13721 13722 Fixed a problem in the Buffer-to-String conversion code where a 13723 string of length one was always returned, regardless of the size 13724 of the input Buffer object. 13725 13726 Removed the NATIVE_CHAR data type across the entire source due to 13727 lack of need and lack of consistent use. 13728 13729 Code and Data Size: Current core subsystem library sizes are shown 13730 below. These are the code and data sizes for the acpica.lib 13731 produced by the Microsoft Visual C++ 6.0 compiler, and these 13732 values do not include any ACPI driver or OSPM code. The debug 13733 version of the code includes the debug output trace mechanism and 13734 has a much larger code and data size. Note that these values will 13735 vary depending on the efficiency of the compiler and the compiler 13736 options used during generation. 13737 13738 Previous Release 13739 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 13740 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 13741 Current Release: 13742 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 13743 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 13744 13745 13746 ---------------------------------------- 13747 05 December 2002. Summary of changes for version 20021205. 13748 13749 1) ACPI CA Core Subsystem: 13750 13751 Fixed a problem where a store to a String or Buffer object could 13752 cause corruption of the DSDT if the object type being stored was 13753 the same as the target object type and the length of the object 13754 being stored was equal to or smaller than the original (existing) 13755 target object. This was seen to cause corruption of battery _BIF 13756 buffers if the _BIF method modified the buffer on the fly. 13757 13758 Fixed a problem where an internal error was generated if a control 13759 method invocation was used in an OperationRegion, Buffer, or 13760 Package declaration. This was caused by the deferred parsing of 13761 the control method and thus the deferred creation of the internal 13762 method object. The solution to this problem was to create the 13763 internal method object at the moment the method is encountered in 13764 the first pass - so that subsequent references to the method will 13765 able to obtain the required parameter count and thus properly 13766 parse the method invocation. This problem presented itself as an 13767 AE_AML_INTERNAL during the pass 1 parse phase during table load. 13768 13769 Fixed a problem where the internal String object copy routine did 13770 not always allocate sufficient memory for the target String object 13771 and caused memory corruption. This problem was seen to cause 13772 "Allocation already present in list!" errors as memory allocation 13773 became corrupted. 13774 13775 Implemented a new function for the evaluation of namespace objects 13776 that allows the specification of the allowable return object 13777 types. This simplifies a lot of code that checks for a return 13778 object of one or more specific objects returned from the 13779 evaluation (such as _STA, etc.) This may become and external 13780 function if it would be useful to ACPI-related drivers. 13781 13782 Completed another round of prefixing #defines with "ACPI_" for 13783 clarity. 13784 13785 Completed additional code restructuring to allow more modular 13786 linking for iASL compiler and AcpiExec. Several files were split 13787 creating new files. New files: nsparse.c dsinit.c evgpe.c 13788 13789 Implemented an abort mechanism to terminate an executing control 13790 method via the AML debugger. This feature is useful for debugging 13791 control methods that depend (wait) for specific hardware 13792 responses. 13793 13794 Code and Data Size: Current core subsystem library sizes are shown 13795 below. These are the code and data sizes for the acpica.lib 13796 produced by the Microsoft Visual C++ 6.0 compiler, and these 13797 values do not include any ACPI driver or OSPM code. The debug 13798 version of the code includes the debug output trace mechanism and 13799 has a much larger code and data size. Note that these values will 13800 vary depending on the efficiency of the compiler and the compiler 13801 options used during generation. 13802 13803 Previous Release 13804 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 13805 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 13806 Current Release: 13807 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 13808 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 13809 13810 13811 2) iASL Compiler/Disassembler 13812 13813 Fixed a compiler code generation problem for "Interrupt" Resource 13814 Descriptors. If specified in the ASL, the optional "Resource 13815 Source Index" and "Resource Source" fields were not inserted into 13816 the correct location within the AML resource descriptor, creating 13817 an invalid descriptor. 13818 13819 Fixed a disassembler problem for "Interrupt" resource descriptors. 13820 The optional "Resource Source Index" and "Resource Source" fields 13821 were ignored. 13822 13823 13824 ---------------------------------------- 13825 22 November 2002. Summary of changes for version 20021122. 13826 13827 13828 1) ACPI CA Core Subsystem: 13829 13830 Fixed a reported problem where an object stored to a Method Local 13831 or Arg was not copied to a new object during the store - the 13832 object pointer was simply copied to the Local/Arg. This caused 13833 all subsequent operations on the Local/Arg to also affect the 13834 original source of the store operation. 13835 13836 Fixed a problem where a store operation to a Method Local or Arg 13837 was not completed properly if the Local/Arg contained a reference 13838 (from RefOf) to a named field. The general-purpose store-to- 13839 namespace-node code is now used so that this case is handled 13840 automatically. 13841 13842 Fixed a problem where the internal object copy routine would cause 13843 a protection fault if the object being copied was a Package and 13844 contained either 1) a NULL package element or 2) a nested sub- 13845 package. 13846 13847 Fixed a problem with the GPE initialization that resulted from an 13848 ambiguity in the ACPI specification. One section of the 13849 specification states that both the address and length of the GPE 13850 block must be zero if the block is not supported. Another section 13851 implies that only the address need be zero if the block is not 13852 supported. The code has been changed so that both the address and 13853 the length must be non-zero to indicate a valid GPE block (i.e., 13854 if either the address or the length is zero, the GPE block is 13855 invalid.) 13856 13857 Code and Data Size: Current core subsystem library sizes are shown 13858 below. These are the code and data sizes for the acpica.lib 13859 produced by the Microsoft Visual C++ 6.0 compiler, and these 13860 values do not include any ACPI driver or OSPM code. The debug 13861 version of the code includes the debug output trace mechanism and 13862 has a much larger code and data size. Note that these values will 13863 vary depending on the efficiency of the compiler and the compiler 13864 options used during generation. 13865 13866 Previous Release 13867 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 13868 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 13869 Current Release: 13870 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 13871 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 13872 13873 13874 2) Linux 13875 13876 Cleaned up EC driver. Exported an external EC read/write 13877 interface. By going through this, other drivers (most notably 13878 sonypi) will be able to serialize access to the EC. 13879 13880 13881 3) iASL Compiler/Disassembler 13882 13883 Implemented support to optionally generate include files for both 13884 ASM and C (the -i switch). This simplifies BIOS development by 13885 automatically creating include files that contain external 13886 declarations for the symbols that are created within the 13887 13888 (optionally generated) ASM and C AML source files. 13889 13890 13891 ---------------------------------------- 13892 15 November 2002. Summary of changes for version 20021115. 13893 13894 1) ACPI CA Core Subsystem: 13895 13896 Fixed a memory leak problem where an error during resolution of 13897 13898 method arguments during a method invocation from another method 13899 failed to cleanup properly by deleting all successfully resolved 13900 argument objects. 13901 13902 Fixed a problem where the target of the Index() operator was not 13903 correctly constructed if the source object was a package. This 13904 problem has not been detected because the use of a target operand 13905 with Index() is very rare. 13906 13907 Fixed a problem with the Index() operator where an attempt was 13908 made to delete the operand objects twice. 13909 13910 Fixed a problem where an attempt was made to delete an operand 13911 twice during execution of the CondRefOf() operator if the target 13912 did not exist. 13913 13914 Implemented the first of perhaps several internal create object 13915 functions that create and initialize a specific object type. This 13916 consolidates duplicated code wherever the object is created, thus 13917 shrinking the size of the subsystem. 13918 13919 Implemented improved debug/error messages for errors that occur 13920 during nested method invocations. All executing method pathnames 13921 are displayed (with the error) as the call stack is unwound - thus 13922 simplifying debug. 13923 13924 Fixed a problem introduced in the 10/02 release that caused 13925 premature deletion of a buffer object if a buffer was used as an 13926 ASL operand where an integer operand is required (Thus causing an 13927 implicit object conversion from Buffer to Integer.) The change in 13928 the 10/02 release was attempting to fix a memory leak (albeit 13929 incorrectly.) 13930 13931 Code and Data Size: Current core subsystem library sizes are shown 13932 below. These are the code and data sizes for the acpica.lib 13933 produced by the Microsoft Visual C++ 6.0 compiler, and these 13934 values do not include any ACPI driver or OSPM code. The debug 13935 version of the code includes the debug output trace mechanism and 13936 has a much larger code and data size. Note that these values will 13937 vary depending on the efficiency of the compiler and the compiler 13938 options used during generation. 13939 13940 Previous Release 13941 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 13942 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 13943 Current Release: 13944 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 13945 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 13946 13947 13948 2) Linux 13949 13950 Changed the implementation of the ACPI semaphores to use down() 13951 instead of down_interruptable(). It is important that the 13952 execution of ACPI control methods not be interrupted by signals. 13953 Methods must run to completion, or the system may be left in an 13954 unknown/unstable state. 13955 13956 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 13957 (Shawn Starr) 13958 13959 13960 3) iASL Compiler/Disassembler 13961 13962 13963 Changed the default location of output files. All output files 13964 are now placed in the current directory by default instead of in 13965 the directory of the source file. This change may affect some 13966 existing makefiles, but it brings the behavior of the compiler in 13967 line with other similar tools. The location of the output files 13968 can be overridden with the -p command line switch. 13969 13970 13971 ---------------------------------------- 13972 11 November 2002. Summary of changes for version 20021111. 13973 13974 13975 0) ACPI Specification 2.0B is released and is now available at: 13976 http://www.acpi.info/index.html 13977 13978 13979 1) ACPI CA Core Subsystem: 13980 13981 Implemented support for the ACPI 2.0 SMBus Operation Regions. 13982 This includes the early detection and handoff of the request to 13983 the SMBus region handler (avoiding all of the complex field 13984 support code), and support for the bidirectional return packet 13985 from an SMBus write operation. This paves the way for the 13986 development of SMBus drivers in each host operating system. 13987 13988 Fixed a problem where the semaphore WAIT_FOREVER constant was 13989 defined as 32 bits, but must be 16 bits according to the ACPI 13990 specification. This had the side effect of causing ASL 13991 Mutex/Event timeouts even though the ASL code requested a wait 13992 forever. Changed all internal references to the ACPI timeout 13993 parameter to 16 bits to prevent future problems. Changed the name 13994 of WAIT_FOREVER to ACPI_WAIT_FOREVER. 13995 13996 Code and Data Size: Current core subsystem library sizes are shown 13997 below. These are the code and data sizes for the acpica.lib 13998 produced by the Microsoft Visual C++ 6.0 compiler, and these 13999 values do not include any ACPI driver or OSPM code. The debug 14000 version of the code includes the debug output trace mechanism and 14001 has a much larger code and data size. Note that these values will 14002 vary depending on the efficiency of the compiler and the compiler 14003 options used during generation. 14004 14005 Previous Release 14006 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 14007 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 14008 Current Release: 14009 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 14010 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 14011 14012 14013 2) Linux 14014 14015 Module loading/unloading fixes (John Cagle) 14016 14017 14018 3) iASL Compiler/Disassembler 14019 14020 Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 14021 14022 Implemented support for the disassembly of all SMBus protocol 14023 keywords (SMBQuick, SMBWord, etc.) 14024 14025 ---------------------------------------- 14026 01 November 2002. Summary of changes for version 20021101. 14027 14028 14029 1) ACPI CA Core Subsystem: 14030 14031 Fixed a problem where platforms that have a GPE1 block but no GPE0 14032 block were not handled correctly. This resulted in a "GPE 14033 overlap" error message. GPE0 is no longer required. 14034 14035 Removed code added in the previous release that inserted nodes 14036 into the namespace in alphabetical order. This caused some side- 14037 effects on various machines. The root cause of the problem is 14038 still under investigation since in theory, the internal ordering 14039 of the namespace nodes should not matter. 14040 14041 14042 Enhanced error reporting for the case where a named object is not 14043 found during control method execution. The full ACPI namepath 14044 (name reference) of the object that was not found is displayed in 14045 this case. 14046 14047 Note: as a result of the overhaul of the namespace object types in 14048 the previous release, the namespace nodes for the predefined 14049 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 14050 instead of ACPI_TYPE_ANY. This simplifies the namespace 14051 management code but may affect code that walks the namespace tree 14052 looking for specific object types. 14053 14054 Code and Data Size: Current core subsystem library sizes are shown 14055 below. These are the code and data sizes for the acpica.lib 14056 produced by the Microsoft Visual C++ 6.0 compiler, and these 14057 values do not include any ACPI driver or OSPM code. The debug 14058 version of the code includes the debug output trace mechanism and 14059 has a much larger code and data size. Note that these values will 14060 vary depending on the efficiency of the compiler and the compiler 14061 options used during generation. 14062 14063 Previous Release 14064 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 14065 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 14066 Current Release: 14067 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 14068 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 14069 14070 14071 2) Linux 14072 14073 Fixed a problem introduced in the previous release where the 14074 Processor and Thermal objects were not recognized and installed in 14075 /proc. This was related to the scope type change described above. 14076 14077 14078 3) iASL Compiler/Disassembler 14079 14080 Implemented the -g option to get all of the required ACPI tables 14081 from the registry and save them to files (Windows version of the 14082 compiler only.) The required tables are the FADT, FACS, and DSDT. 14083 14084 Added ACPI table checksum validation during table disassembly in 14085 order to catch corrupted tables. 14086 14087 14088 ---------------------------------------- 14089 22 October 2002. Summary of changes for version 20021022. 14090 14091 1) ACPI CA Core Subsystem: 14092 14093 Implemented a restriction on the Scope operator that the target 14094 must already exist in the namespace at the time the operator is 14095 encountered (during table load or method execution). In other 14096 words, forward references are not allowed and Scope() cannot 14097 create a new object. This changes the previous behavior where the 14098 interpreter would create the name if not found. This new behavior 14099 correctly enables the search-to-root algorithm during namespace 14100 lookup of the target name. Because of this upsearch, this fixes 14101 the known Compaq _SB_.OKEC problem and makes both the AML 14102 interpreter and iASL compiler compatible with other ACPI 14103 implementations. 14104 14105 Completed a major overhaul of the internal ACPI object types for 14106 the ACPI Namespace and the associated operand objects. Many of 14107 these types had become obsolete with the introduction of the two- 14108 pass namespace load. This cleanup simplifies the code and makes 14109 the entire namespace load mechanism much clearer and easier to 14110 understand. 14111 14112 Improved debug output for tracking scope opening/closing to help 14113 diagnose scoping issues. The old scope name as well as the new 14114 scope name are displayed. Also improved error messages for 14115 problems with ASL Mutex objects and error messages for GPE 14116 problems. 14117 14118 Cleaned up the namespace dump code, removed obsolete code. 14119 14120 All string output (for all namespace/object dumps) now uses the 14121 common ACPI string output procedure which handles escapes properly 14122 and does not emit non-printable characters. 14123 14124 Fixed some issues with constants in the 64-bit version of the 14125 local C library (utclib.c) 14126 14127 14128 2) Linux 14129 14130 EC Driver: No longer attempts to acquire the Global Lock at 14131 interrupt level. 14132 14133 14134 3) iASL Compiler/Disassembler 14135 14136 Implemented ACPI 2.0B grammar change that disallows all Type 1 and 14137 2 opcodes outside of a control method. This means that the 14138 "executable" operators (versus the "namespace" operators) cannot 14139 be used at the table level; they can only be used within a control 14140 method. 14141 14142 Implemented the restriction on the Scope() operator where the 14143 target must already exist in the namespace at the time the 14144 operator is encountered (during ASL compilation). In other words, 14145 forward references are not allowed and Scope() cannot create a new 14146 object. This makes the iASL compiler compatible with other ACPI 14147 implementations and makes the Scope() implementation adhere to the 14148 ACPI specification. 14149 14150 Fixed a problem where namepath optimization for the Alias operator 14151 was optimizing the wrong path (of the two namepaths.) This caused 14152 a "Missing alias link" error message. 14153 14154 Fixed a problem where an "unknown reserved name" warning could be 14155 incorrectly generated for names like "_SB" when the trailing 14156 underscore is not used in the original ASL. 14157 14158 Fixed a problem where the reserved name check did not handle 14159 NamePaths with multiple NameSegs correctly. The first nameseg of 14160 the NamePath was examined instead of the last NameSeg. 14161 14162 14163 ---------------------------------------- 14164 14165 02 October 2002. Summary of changes for this release. 14166 14167 14168 1) ACPI CA Core Subsystem version 20021002: 14169 14170 Fixed a problem where a store/copy of a string to an existing 14171 string did not always set the string length properly in the String 14172 object. 14173 14174 Fixed a reported problem with the ToString operator where the 14175 behavior was identical to the ToHexString operator instead of just 14176 simply converting a raw buffer to a string data type. 14177 14178 Fixed a problem where CopyObject and the other "explicit" 14179 conversion operators were not updating the internal namespace node 14180 type as part of the store operation. 14181 14182 Fixed a memory leak during implicit source operand conversion 14183 where the original object was not deleted if it was converted to a 14184 new object of a different type. 14185 14186 Enhanced error messages for all problems associated with namespace 14187 lookups. Common procedure generates and prints the lookup name as 14188 well as the formatted status. 14189 14190 Completed implementation of a new design for the Alias support 14191 within the namespace. The existing design did not handle the case 14192 where a new object was assigned to one of the two names due to the 14193 use of an explicit conversion operator, resulting in the two names 14194 pointing to two different objects. The new design simply points 14195 the Alias name to the original name node - not to the object. 14196 This results in a level of indirection that must be handled in the 14197 name resolution mechanism. 14198 14199 Code and Data Size: Current core subsystem library sizes are shown 14200 below. These are the code and data sizes for the acpica.lib 14201 produced by the Microsoft Visual C++ 6.0 compiler, and these 14202 values do not include any ACPI driver or OSPM code. The debug 14203 version of the code includes the debug output trace mechanism and 14204 has a larger code and data size. Note that these values will vary 14205 depending on the efficiency of the compiler and the compiler 14206 options used during generation. 14207 14208 Previous Release 14209 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 14210 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 14211 Current Release: 14212 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 14213 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 14214 14215 14216 2) Linux 14217 14218 Initialize thermal driver's timer before it is used. (Knut 14219 Neumann) 14220 14221 Allow handling negative celsius values. (Kochi Takayoshi) 14222 14223 Fix thermal management and make trip points. R/W (Pavel Machek) 14224 14225 Fix /proc/acpi/sleep. (P. Christeas) 14226 14227 IA64 fixes. (David Mosberger) 14228 14229 Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 14230 14231 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 14232 Brodowski) 14233 14234 14235 3) iASL Compiler/Disassembler 14236 14237 Clarified some warning/error messages. 14238 14239 14240 ---------------------------------------- 14241 18 September 2002. Summary of changes for this release. 14242 14243 14244 1) ACPI CA Core Subsystem version 20020918: 14245 14246 Fixed a reported problem with reference chaining (via the Index() 14247 and RefOf() operators) in the ObjectType() and SizeOf() operators. 14248 The definition of these operators includes the dereferencing of 14249 all chained references to return information on the base object. 14250 14251 Fixed a problem with stores to indexed package elements - the 14252 existing code would not complete the store if an "implicit 14253 conversion" was not performed. In other words, if the existing 14254 object (package element) was to be replaced completely, the code 14255 didn't handle this case. 14256 14257 Relaxed typechecking on the ASL "Scope" operator to allow the 14258 target name to refer to an object of type Integer, String, or 14259 Buffer, in addition to the scoping object types (Device, 14260 predefined Scopes, Processor, PowerResource, and ThermalZone.) 14261 This allows existing AML code that has workarounds for a bug in 14262 Windows to function properly. A warning is issued, however. This 14263 affects both the AML interpreter and the iASL compiler. Below is 14264 an example of this type of ASL code: 14265 14266 Name(DEB,0x00) 14267 Scope(DEB) 14268 { 14269 14270 Fixed some reported problems with 64-bit integer support in the 14271 local implementation of C library functions (clib.c) 14272 14273 14274 2) Linux 14275 14276 Use ACPI fix map region instead of IOAPIC region, since it is 14277 undefined in non-SMP. 14278 14279 Ensure that the SCI has the proper polarity and trigger, even on 14280 systems that do not have an interrupt override entry in the MADT. 14281 14282 2.5 big driver reorganization (Pat Mochel) 14283 14284 Use early table mapping code from acpitable.c (Andi Kleen) 14285 14286 New blacklist entries (Andi Kleen) 14287 14288 Blacklist improvements. Split blacklist code out into a separate 14289 file. Move checking the blacklist to very early. Previously, we 14290 would use ACPI tables, and then halfway through init, check the 14291 blacklist -- too late. Now, it's early enough to completely fall- 14292 back to non-ACPI. 14293 14294 14295 3) iASL Compiler/Disassembler version 20020918: 14296 14297 Fixed a problem where the typechecking code didn't know that an 14298 alias could point to a method. In other words, aliases were not 14299 being dereferenced during typechecking. 14300 14301 14302 ---------------------------------------- 14303 29 August 2002. Summary of changes for this release. 14304 14305 1) ACPI CA Core Subsystem Version 20020829: 14306 14307 If the target of a Scope() operator already exists, it must be an 14308 object type that actually opens a scope -- such as a Device, 14309 Method, Scope, etc. This is a fatal runtime error. Similar error 14310 check has been added to the iASL compiler also. 14311 14312 Tightened up the namespace load to disallow multiple names in the 14313 same scope. This previously was allowed if both objects were of 14314 the same type. (i.e., a lookup was the same as entering a new 14315 name). 14316 14317 14318 2) Linux 14319 14320 Ensure that the ACPI interrupt has the proper trigger and 14321 polarity. 14322 14323 local_irq_disable is extraneous. (Matthew Wilcox) 14324 14325 Make "acpi=off" actually do what it says, and not use the ACPI 14326 interpreter *or* the tables. 14327 14328 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 14329 Takayoshi) 14330 14331 14332 3) iASL Compiler/Disassembler Version 20020829: 14333 14334 Implemented namepath optimization for name declarations. For 14335 example, a declaration like "Method (\_SB_.ABCD)" would get 14336 optimized to "Method (ABCD)" if the declaration is within the 14337 \_SB_ scope. This optimization is in addition to the named 14338 reference path optimization first released in the previous 14339 version. This would seem to complete all possible optimizations 14340 for namepaths within the ASL/AML. 14341 14342 If the target of a Scope() operator already exists, it must be an 14343 object type that actually opens a scope -- such as a Device, 14344 Method, Scope, etc. 14345 14346 Implemented a check and warning for unreachable code in the same 14347 block below a Return() statement. 14348 14349 Fixed a problem where the listing file was not generated if the 14350 compiler aborted if the maximum error count was exceeded (200). 14351 14352 Fixed a problem where the typechecking of method return values was 14353 broken. This includes the check for a return value when the 14354 method is invoked as a TermArg (a return value is expected.) 14355 14356 Fixed a reported problem where EOF conditions during a quoted 14357 string or comment caused a fault. 14358 14359 14360 ---------------------------------------- 14361 15 August 2002. Summary of changes for this release. 14362 14363 1) ACPI CA Core Subsystem Version 20020815: 14364 14365 Fixed a reported problem where a Store to a method argument that 14366 contains a reference did not perform the indirect store correctly. 14367 This problem was created during the conversion to the new 14368 reference object model - the indirect store to a method argument 14369 code was not updated to reflect the new model. 14370 14371 Reworked the ACPI mode change code to better conform to ACPI 2.0, 14372 handle corner cases, and improve code legibility (Kochi Takayoshi) 14373 14374 Fixed a problem with the pathname parsing for the carat (^) 14375 prefix. The heavy use of the carat operator by the new namepath 14376 optimization in the iASL compiler uncovered a problem with the AML 14377 interpreter handling of this prefix. In the case where one or 14378 more carats precede a single nameseg, the nameseg was treated as 14379 standalone and the search rule (to root) was inadvertently 14380 applied. This could cause both the iASL compiler and the 14381 interpreter to find the wrong object or to miss the error that 14382 should occur if the object does not exist at that exact pathname. 14383 14384 Found and fixed the problem where the HP Pavilion DSDT would not 14385 load. This was a relatively minor tweak to the table loading code 14386 (a problem caused by the unexpected encounter with a method 14387 invocation not within a control method), but it does not solve the 14388 overall issue of the execution of AML code at the table level. 14389 This investigation is still ongoing. 14390 14391 Code and Data Size: Current core subsystem library sizes are shown 14392 below. These are the code and data sizes for the acpica.lib 14393 produced by the Microsoft Visual C++ 6.0 compiler, and these 14394 values do not include any ACPI driver or OSPM code. The debug 14395 version of the code includes the debug output trace mechanism and 14396 has a larger code and data size. Note that these values will vary 14397 depending on the efficiency of the compiler and the compiler 14398 options used during generation. 14399 14400 Previous Release 14401 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 14402 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 14403 Current Release: 14404 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 14405 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 14406 14407 14408 2) Linux 14409 14410 Remove redundant slab.h include (Brad Hards) 14411 14412 Fix several bugs in thermal.c (Herbert Nachtnebel) 14413 14414 Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 14415 14416 Change acpi_system_suspend to use updated irq functions (Pavel 14417 Machek) 14418 14419 Export acpi_get_firmware_table (Matthew Wilcox) 14420 14421 Use proper root proc entry for ACPI (Kochi Takayoshi) 14422 14423 Fix early-boot table parsing (Bjorn Helgaas) 14424 14425 14426 3) iASL Compiler/Disassembler 14427 14428 Reworked the compiler options to make them more consistent and to 14429 use two-letter options where appropriate. We were running out of 14430 sensible letters. This may break some makefiles, so check the 14431 current options list by invoking the compiler with no parameters. 14432 14433 Completed the design and implementation of the ASL namepath 14434 optimization option for the compiler. This option optimizes all 14435 references to named objects to the shortest possible path. The 14436 first attempt tries to utilize a single nameseg (4 characters) and 14437 the "search-to-root" algorithm used by the interpreter. If that 14438 cannot be used (because either the name is not in the search path 14439 or there is a conflict with another object with the same name), 14440 the pathname is optimized using the carat prefix (usually a 14441 shorter string than specifying the entire path from the root.) 14442 14443 Implemented support to obtain the DSDT from the Windows registry 14444 (when the disassembly option is specified with no input file). 14445 Added this code as the implementation for AcpiOsTableOverride in 14446 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 14447 utility) to scan memory for the DSDT to the AcpiOsTableOverride 14448 function in the DOS OSL to make the disassembler truly OS 14449 independent. 14450 14451 Implemented a new option to disassemble and compile in one step. 14452 When used without an input filename, this option will grab the 14453 DSDT from the local machine, disassemble it, and compile it in one 14454 step. 14455 14456 Added a warning message for invalid escapes (a backslash followed 14457 by any character other than the allowable escapes). This catches 14458 the quoted string error "\_SB_" (which should be "\\_SB_" ). 14459 14460 Also, there are numerous instances in the ACPI specification where 14461 this error occurs. 14462 14463 Added a compiler option to disable all optimizations. This is 14464 basically the "compatibility mode" because by using this option, 14465 the AML code will come out exactly the same as other ASL 14466 compilers. 14467 14468 Added error messages for incorrectly ordered dependent resource 14469 functions. This includes: missing EndDependentFn macro at end of 14470 dependent resource list, nested dependent function macros (both 14471 start and end), and missing StartDependentFn macro. These are 14472 common errors that should be caught at compile time. 14473 14474 Implemented _OSI support for the disassembler and compiler. _OSI 14475 must be included in the namespace for proper disassembly (because 14476 the disassembler must know the number of arguments.) 14477 14478 Added an "optimization" message type that is optional (off by 14479 default). This message is used for all optimizations - including 14480 constant folding, integer optimization, and namepath optimization. 14481 14482 ---------------------------------------- 14483 25 July 2002. Summary of changes for this release. 14484 14485 14486 1) ACPI CA Core Subsystem Version 20020725: 14487 14488 The AML Disassembler has been enhanced to produce compilable ASL 14489 code and has been integrated into the iASL compiler (see below) as 14490 well as the single-step disassembly for the AML debugger and the 14491 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 14492 resource templates and macros are fully supported. The 14493 disassembler has been tested on over 30 different AML files, 14494 producing identical AML when the resulting disassembled ASL file 14495 is recompiled with the same ASL compiler. 14496 14497 Modified the Resource Manager to allow zero interrupts and zero 14498 dma channels during the GetCurrentResources call. This was 14499 causing problems on some platforms. 14500 14501 Added the AcpiOsRedirectOutput interface to the OSL to simplify 14502 output redirection for the AcpiOsPrintf and AcpiOsVprintf 14503 interfaces. 14504 14505 Code and Data Size: Current core subsystem library sizes are shown 14506 below. These are the code and data sizes for the acpica.lib 14507 produced by the Microsoft Visual C++ 6.0 compiler, and these 14508 values do not include any ACPI driver or OSPM code. The debug 14509 version of the code includes the debug output trace mechanism and 14510 has a larger code and data size. Note that these values will vary 14511 depending on the efficiency of the compiler and the compiler 14512 options used during generation. 14513 14514 Previous Release 14515 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 14516 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 14517 Current Release: 14518 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 14519 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 14520 14521 14522 2) Linux 14523 14524 Fixed a panic in the EC driver (Dominik Brodowski) 14525 14526 Implemented checksum of the R/XSDT itself during Linux table scan 14527 (Richard Schaal) 14528 14529 14530 3) iASL compiler 14531 14532 The AML disassembler is integrated into the compiler. The "-d" 14533 option invokes the disassembler to completely disassemble an 14534 input AML file, producing as output a text ASL file with the 14535 extension ".dsl" (to avoid name collisions with existing .asl 14536 source files.) A future enhancement will allow the disassembler 14537 to obtain the BIOS DSDT from the registry under Windows. 14538 14539 Fixed a problem with the VendorShort and VendorLong resource 14540 descriptors where an invalid AML sequence was created. 14541 14542 Implemented a fix for BufferData term in the ASL parser. It was 14543 inadvertently defined twice, allowing invalid syntax to pass and 14544 causing reduction conflicts. 14545 14546 Fixed a problem where the Ones opcode could get converted to a 14547 value of zero if "Ones" was used where a byte, word or dword value 14548 was expected. The 64-bit value is now truncated to the correct 14549 size with the correct value. 14550 14551 14552 14553 ---------------------------------------- 14554 02 July 2002. Summary of changes for this release. 14555 14556 14557 1) ACPI CA Core Subsystem Version 20020702: 14558 14559 The Table Manager code has been restructured to add several new 14560 features. Tables that are not required by the core subsystem 14561 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 14562 validated in any way and are returned from AcpiGetFirmwareTable if 14563 requested. The AcpiOsTableOverride interface is now called for 14564 each table that is loaded by the subsystem in order to allow the 14565 host to override any table it chooses. Previously, only the DSDT 14566 could be overridden. Added one new files, tbrsdt.c and 14567 tbgetall.c. 14568 14569 Fixed a problem with the conversion of internal package objects to 14570 external objects (when a package is returned from a control 14571 method.) The return buffer length was set to zero instead of the 14572 proper length of the package object. 14573 14574 Fixed a reported problem with the use of the RefOf and DeRefOf 14575 operators when passing reference arguments to control methods. A 14576 new type of Reference object is used internally for references 14577 produced by the RefOf operator. 14578 14579 Added additional error messages in the Resource Manager to explain 14580 AE_BAD_DATA errors when they occur during resource parsing. 14581 14582 Split the AcpiEnableSubsystem into two primitives to enable a 14583 finer granularity initialization sequence. These two calls should 14584 be called in this order: AcpiEnableSubsystem (flags), 14585 AcpiInitializeObjects (flags). The flags parameter remains the 14586 same. 14587 14588 14589 2) Linux 14590 14591 Updated the ACPI utilities module to understand the new style of 14592 fully resolved package objects that are now returned from the core 14593 subsystem. This eliminates errors of the form: 14594 14595 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 14596 acpi_utils-0430 [145] acpi_evaluate_reference: 14597 Invalid element in package (not a device reference) 14598 14599 The method evaluation utility uses the new buffer allocation 14600 scheme instead of calling AcpiEvaluate Object twice. 14601 14602 Added support for ECDT. This allows the use of the Embedded 14603 14604 Controller before the namespace has been fully initialized, which 14605 is necessary for ACPI 2.0 support, and for some laptops to 14606 initialize properly. (Laptops using ECDT are still rare, so only 14607 limited testing was performed of the added functionality.) 14608 14609 Fixed memory leaks in the EC driver. 14610 14611 Eliminated a brittle code structure in acpi_bus_init(). 14612 14613 Eliminated the acpi_evaluate() helper function in utils.c. It is 14614 no longer needed since acpi_evaluate_object can optionally 14615 allocate memory for the return object. 14616 14617 Implemented fix for keyboard hang when getting battery readings on 14618 some systems (Stephen White) 14619 14620 PCI IRQ routing update (Dominik Brodowski) 14621 14622 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 14623 support 14624 14625 ---------------------------------------- 14626 11 June 2002. Summary of changes for this release. 14627 14628 14629 1) ACPI CA Core Subsystem Version 20020611: 14630 14631 Fixed a reported problem where constants such as Zero and One 14632 appearing within _PRT packages were not handled correctly within 14633 the resource manager code. Originally reported against the ASL 14634 compiler because the code generator now optimizes integers to 14635 their minimal AML representation (i.e. AML constants if possible.) 14636 The _PRT code now handles all AML constant opcodes correctly 14637 (Zero, One, Ones, Revision). 14638 14639 Fixed a problem with the Concatenate operator in the AML 14640 interpreter where a buffer result object was incorrectly marked as 14641 not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 14642 14643 All package sub-objects are now fully resolved before they are 14644 returned from the external ACPI interfaces. This means that name 14645 strings are resolved to object handles, and constant operators 14646 (Zero, One, Ones, Revision) are resolved to Integers. 14647 14648 Implemented immediate resolution of the AML Constant opcodes 14649 (Zero, One, Ones, Revision) to Integer objects upon detection 14650 within the AML stream. This has simplified and reduced the 14651 generated code size of the subsystem by eliminating about 10 14652 switch statements for these constants (which previously were 14653 contained in Reference objects.) The complicating issues are that 14654 the Zero opcode is used as a "placeholder" for unspecified 14655 optional target operands and stores to constants are defined to be 14656 no-ops. 14657 14658 Code and Data Size: Current core subsystem library sizes are shown 14659 below. These are the code and data sizes for the acpica.lib 14660 produced by the Microsoft Visual C++ 6.0 compiler, and these 14661 values do not include any ACPI driver or OSPM code. The debug 14662 version of the code includes the debug output trace mechanism and 14663 has a larger code and data size. Note that these values will vary 14664 depending on the efficiency of the compiler and the compiler 14665 options used during generation. 14666 14667 Previous Release 14668 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 14669 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 14670 Current Release: 14671 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 14672 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 14673 14674 14675 2) Linux 14676 14677 14678 Added preliminary support for obtaining _TRA data for PCI root 14679 bridges (Bjorn Helgaas). 14680 14681 14682 3) iASL Compiler Version X2046: 14683 14684 Fixed a problem where the "_DDN" reserved name was defined to be a 14685 control method with one argument. There are no arguments, and 14686 _DDN does not have to be a control method. 14687 14688 Fixed a problem with the Linux version of the compiler where the 14689 source lines printed with error messages were the wrong lines. 14690 This turned out to be the "LF versus CR/LF" difference between 14691 Windows and Unix. This appears to be the longstanding issue 14692 concerning listing output and error messages. 14693 14694 Fixed a problem with the Linux version of compiler where opcode 14695 names within error messages were wrong. This was caused by a 14696 slight difference in the output of the Flex tool on Linux versus 14697 Windows. 14698 14699 Fixed a problem with the Linux compiler where the hex output files 14700 contained some garbage data caused by an internal buffer overrun. 14701 14702 14703 ---------------------------------------- 14704 17 May 2002. Summary of changes for this release. 14705 14706 14707 1) ACPI CA Core Subsystem Version 20020517: 14708 14709 Implemented a workaround to an BIOS bug discovered on the HP 14710 OmniBook where the FADT revision number and the table size are 14711 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 14712 behavior is to fallback to using only the ACPI 1.0 fields of the 14713 FADT if the table is too small to be a ACPI 2.0 table as claimed 14714 by the revision number. Although this is a BIOS bug, this is a 14715 case where the workaround is simple enough and with no side 14716 effects, so it seemed prudent to add it. A warning message is 14717 issued, however. 14718 14719 Implemented minimum size checks for the fixed-length ACPI tables - 14720 - the FADT and FACS, as well as consistency checks between the 14721 revision number and the table size. 14722 14723 Fixed a reported problem in the table override support where the 14724 new table pointer was incorrectly treated as a physical address 14725 instead of a logical address. 14726 14727 Eliminated the use of the AE_AML_ERROR exception and replaced it 14728 with more descriptive codes. 14729 14730 Fixed a problem where an exception would occur if an ASL Field was 14731 defined with no named Field Units underneath it (used by some 14732 index fields). 14733 14734 Code and Data Size: Current core subsystem library sizes are shown 14735 below. These are the code and data sizes for the acpica.lib 14736 produced by the Microsoft Visual C++ 6.0 compiler, and these 14737 values do not include any ACPI driver or OSPM code. The debug 14738 version of the code includes the debug output trace mechanism and 14739 has a larger code and data size. Note that these values will vary 14740 depending on the efficiency of the compiler and the compiler 14741 options used during generation. 14742 14743 Previous Release 14744 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 14745 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 14746 Current Release: 14747 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 14748 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 14749 14750 14751 14752 2) Linux 14753 14754 Much work done on ACPI init (MADT and PCI IRQ routing support). 14755 (Paul D. and Dominik Brodowski) 14756 14757 Fix PCI IRQ-related panic on boot (Sam Revitch) 14758 14759 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 14760 14761 Fix "MHz" typo (Dominik Brodowski) 14762 14763 Fix RTC year 2000 issue (Dominik Brodowski) 14764 14765 Preclude multiple button proc entries (Eric Brunet) 14766 14767 Moved arch-specific code out of include/platform/aclinux.h 14768 14769 3) iASL Compiler Version X2044: 14770 14771 Implemented error checking for the string used in the EISAID macro 14772 (Usually used in the definition of the _HID object.) The code now 14773 strictly enforces the PnP format - exactly 7 characters, 3 14774 uppercase letters and 4 hex digits. 14775 14776 If a raw string is used in the definition of the _HID object 14777 (instead of the EISAID macro), the string must contain all 14778 alphanumeric characters (e.g., "*PNP0011" is not allowed because 14779 of the asterisk.) 14780 14781 Implemented checking for invalid use of ACPI reserved names for 14782 most of the name creation operators (Name, Device, Event, Mutex, 14783 OperationRegion, PowerResource, Processor, and ThermalZone.) 14784 Previously, this check was only performed for control methods. 14785 14786 Implemented an additional check on the Name operator to emit an 14787 error if a reserved name that must be implemented in ASL as a 14788 control method is used. We know that a reserved name must be a 14789 method if it is defined with input arguments. 14790 14791 The warning emitted when a namespace object reference is not found 14792 during the cross reference phase has been changed into an error. 14793 The "External" directive should be used for names defined in other 14794 modules. 14795 14796 14797 4) Tools and Utilities 14798 14799 The 16-bit tools (adump16 and aexec16) have been regenerated and 14800 tested. 14801 14802 Fixed a problem with the output of both acpidump and adump16 where 14803 the indentation of closing parentheses and brackets was not 14804 14805 aligned properly with the parent block. 14806 14807 14808 ---------------------------------------- 14809 03 May 2002. Summary of changes for this release. 14810 14811 14812 1) ACPI CA Core Subsystem Version 20020503: 14813 14814 Added support a new OSL interface that allows the host operating 14815 14816 system software to override the DSDT found in the firmware - 14817 AcpiOsTableOverride. With this interface, the OSL can examine the 14818 version of the firmware DSDT and replace it with a different one 14819 if desired. 14820 14821 Added new external interfaces for accessing ACPI registers from 14822 device drivers and other system software - AcpiGetRegister and 14823 AcpiSetRegister. This was simply an externalization of the 14824 existing AcpiHwBitRegister interfaces. 14825 14826 Fixed a regression introduced in the previous build where the 14827 ASL/AML CreateField operator always returned an error, 14828 "destination must be a NS Node". 14829 14830 Extended the maximum time (before failure) to successfully enable 14831 ACPI mode to 3 seconds. 14832 14833 Code and Data Size: Current core subsystem library sizes are shown 14834 below. These are the code and data sizes for the acpica.lib 14835 produced by the Microsoft Visual C++ 6.0 compiler, and these 14836 values do not include any ACPI driver or OSPM code. The debug 14837 version of the code includes the debug output trace mechanism and 14838 has a larger code and data size. Note that these values will vary 14839 depending on the efficiency of the compiler and the compiler 14840 options used during generation. 14841 14842 Previous Release 14843 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 14844 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 14845 Current Release: 14846 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 14847 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 14848 14849 14850 2) Linux 14851 14852 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 14853 free. While 3 out of 4 of our in-house systems work fine, the last 14854 one still hangs when testing the LAPIC timer. 14855 14856 Renamed many files in 2.5 kernel release to omit "acpi_" from the 14857 name. 14858 14859 Added warning on boot for Presario 711FR. 14860 14861 Sleep improvements (Pavel Machek) 14862 14863 ACPI can now be built without CONFIG_PCI enabled. 14864 14865 IA64: Fixed memory map functions (JI Lee) 14866 14867 14868 3) iASL Compiler Version X2043: 14869 14870 Added support to allow the compiler to be integrated into the MS 14871 VC++ development environment for one-button compilation of single 14872 files or entire projects -- with error-to-source-line mapping. 14873 14874 Implemented support for compile-time constant folding for the 14875 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 14876 specification. This allows the ASL writer to use expressions 14877 instead of Integer/Buffer/String constants in terms that must 14878 evaluate to constants at compile time and will also simplify the 14879 emitted AML in any such sub-expressions that can be folded 14880 (evaluated at compile-time.) This increases the size of the 14881 compiler significantly because a portion of the ACPI CA AML 14882 interpreter is included within the compiler in order to pre- 14883 evaluate constant expressions. 14884 14885 14886 Fixed a problem with the "Unicode" ASL macro that caused the 14887 compiler to fault. (This macro is used in conjunction with the 14888 _STR reserved name.) 14889 14890 Implemented an AML opcode optimization to use the Zero, One, and 14891 Ones opcodes where possible to further reduce the size of integer 14892 constants and thus reduce the overall size of the generated AML 14893 code. 14894 14895 Implemented error checking for new reserved terms for ACPI version 14896 2.0A. 14897 14898 Implemented the -qr option to display the current list of ACPI 14899 reserved names known to the compiler. 14900 14901 Implemented the -qc option to display the current list of ASL 14902 operators that are allowed within constant expressions and can 14903 therefore be folded at compile time if the operands are constants. 14904 14905 14906 4) Documentation 14907 14908 Updated the Programmer's Reference for new interfaces, data types, 14909 and memory allocation model options. 14910 14911 Updated the iASL Compiler User Reference to apply new format and 14912 add information about new features and options. 14913 14914 ---------------------------------------- 14915 19 April 2002. Summary of changes for this release. 14916 14917 1) ACPI CA Core Subsystem Version 20020419: 14918 14919 The source code base for the Core Subsystem has been completely 14920 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 14921 versions. The Lint option files used are included in the 14922 /acpi/generate/lint directory. 14923 14924 Implemented enhanced status/error checking across the entire 14925 Hardware manager subsystem. Any hardware errors (reported from 14926 the OSL) are now bubbled up and will abort a running control 14927 method. 14928 14929 14930 Fixed a problem where the per-ACPI-table integer width (32 or 64) 14931 was stored only with control method nodes, causing a fault when 14932 non-control method code was executed during table loading. The 14933 solution implemented uses a global variable to indicate table 14934 width across the entire ACPI subsystem. Therefore, ACPI CA does 14935 not support mixed integer widths across different ACPI tables 14936 (DSDT, SSDT). 14937 14938 Fixed a problem where NULL extended fields (X fields) in an ACPI 14939 2.0 ACPI FADT caused the table load to fail. Although the 14940 existing ACPI specification is a bit fuzzy on this topic, the new 14941 behavior is to fall back on a ACPI 1.0 field if the corresponding 14942 ACPI 2.0 X field is zero (even though the table revision indicates 14943 a full ACPI 2.0 table.) The ACPI specification will be updated to 14944 clarify this issue. 14945 14946 Fixed a problem with the SystemMemory operation region handler 14947 where memory was always accessed byte-wise even if the AML- 14948 specified access width was larger than a byte. This caused 14949 problems on systems with memory-mapped I/O. Memory is now 14950 accessed with the width specified. On systems that do not support 14951 non-aligned transfers, a check is made to guarantee proper address 14952 alignment before proceeding in order to avoid an AML-caused 14953 alignment fault within the kernel. 14954 14955 14956 Fixed a problem with the ExtendedIrq resource where only one byte 14957 of the 4-byte Irq field was extracted. 14958 14959 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 14960 function was out of date and required a rewrite. 14961 14962 Code and Data Size: Current core subsystem library sizes are shown 14963 below. These are the code and data sizes for the acpica.lib 14964 produced by the Microsoft Visual C++ 6.0 compiler, and these 14965 values do not include any ACPI driver or OSPM code. The debug 14966 version of the code includes the debug output trace mechanism and 14967 has a larger code and data size. Note that these values will vary 14968 depending on the efficiency of the compiler and the compiler 14969 options used during generation. 14970 14971 Previous Release 14972 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 14973 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 14974 Current Release: 14975 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 14976 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 14977 14978 14979 2) Linux 14980 14981 PCI IRQ routing fixes (Dominik Brodowski) 14982 14983 14984 3) iASL Compiler Version X2042: 14985 14986 Implemented an additional compile-time error check for a field 14987 unit whose size + minimum access width would cause a run-time 14988 access beyond the end-of-region. Previously, only the field size 14989 itself was checked. 14990 14991 The Core subsystem and iASL compiler now share a common parse 14992 object in preparation for compile-time evaluation of the type 14993 3/4/5 ASL operators. 14994 14995 14996 ---------------------------------------- 14997 Summary of changes for this release: 03_29_02 14998 14999 1) ACPI CA Core Subsystem Version 20020329: 15000 15001 Implemented support for late evaluation of TermArg operands to 15002 Buffer and Package objects. This allows complex expressions to be 15003 used in the declarations of these object types. 15004 15005 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 15006 1.0, if the field was larger than 32 bits, it was returned as a 15007 buffer - otherwise it was returned as an integer. In ACPI 2.0, 15008 the field is returned as a buffer only if the field is larger than 15009 64 bits. The TableRevision is now considered when making this 15010 conversion to avoid incompatibility with existing ASL code. 15011 15012 Implemented logical addressing for AcpiOsGetRootPointer. This 15013 allows an RSDP with either a logical or physical address. With 15014 this support, the host OS can now override all ACPI tables with 15015 one logical RSDP. Includes implementation of "typed" pointer 15016 support to allow a common data type for both physical and logical 15017 pointers internally. This required a change to the 15018 AcpiOsGetRootPointer interface. 15019 15020 Implemented the use of ACPI 2.0 Generic Address Structures for all 15021 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 15022 mapped I/O for these ACPI features. 15023 15024 Initialization now ignores not only non-required tables (All 15025 tables other than the FADT, FACS, DSDT, and SSDTs), but also does 15026 not validate the table headers of unrecognized tables. 15027 15028 Fixed a problem where a notify handler could only be 15029 installed/removed on an object of type Device. All "notify" 15030 15031 objects are now supported -- Devices, Processor, Power, and 15032 Thermal. 15033 15034 Removed most verbosity from the ACPI_DB_INFO debug level. Only 15035 critical information is returned when this debug level is enabled. 15036 15037 Code and Data Size: Current core subsystem library sizes are shown 15038 below. These are the code and data sizes for the acpica.lib 15039 produced by the Microsoft Visual C++ 6.0 compiler, and these 15040 values do not include any ACPI driver or OSPM code. The debug 15041 version of the code includes the debug output trace mechanism and 15042 has a larger code and data size. Note that these values will vary 15043 depending on the efficiency of the compiler and the compiler 15044 options used during generation. 15045 15046 Previous Release 15047 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 15048 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 15049 Current Release: 15050 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 15051 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 15052 15053 15054 2) Linux: 15055 15056 The processor driver (acpi_processor.c) now fully supports ACPI 15057 2.0-based processor performance control (e.g. Intel(R) 15058 SpeedStep(TM) technology) Note that older laptops that only have 15059 the Intel "applet" interface are not supported through this. The 15060 'limit' and 'performance' interface (/proc) are fully functional. 15061 [Note that basic policy for controlling performance state 15062 transitions will be included in the next version of ospmd.] The 15063 idle handler was modified to more aggressively use C2, and PIIX4 15064 errata handling underwent a complete overhaul (big thanks to 15065 Dominik Brodowski). 15066 15067 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 15068 based devices in the ACPI namespace are now dynamically bound 15069 (associated) with their PCI counterparts (e.g. PCI1->01:00.0). 15070 This allows, among other things, ACPI to resolve bus numbers for 15071 subordinate PCI bridges. 15072 15073 Enhanced PCI IRQ routing to get the proper bus number for _PRT 15074 entries defined underneath PCI bridges. 15075 15076 Added IBM 600E to bad bios list due to invalid _ADR value for 15077 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 15078 15079 In the process of adding full MADT support (e.g. IOAPIC) for IA32 15080 (acpi.c, mpparse.c) -- stay tuned. 15081 15082 Added back visual differentiation between fixed-feature and 15083 control-method buttons in dmesg. Buttons are also subtyped (e.g. 15084 button/power/PWRF) to simplify button identification. 15085 15086 We no longer use -Wno-unused when compiling debug. Please ignore 15087 any "_THIS_MODULE defined but not used" messages. 15088 15089 Can now shut down the system using "magic sysrq" key. 15090 15091 15092 3) iASL Compiler version 2041: 15093 15094 Fixed a problem where conversion errors for hex/octal/decimal 15095 constants were not reported. 15096 15097 Implemented a fix for the General Register template Address field. 15098 This field was 8 bits when it should be 64. 15099 15100 Fixed a problem where errors/warnings were no longer being emitted 15101 within the listing output file. 15102 15103 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 15104 exactly 4 characters, alphanumeric only. 15105 15106 15107 15108 15109 ---------------------------------------- 15110 Summary of changes for this release: 03_08_02 15111 15112 15113 1) ACPI CA Core Subsystem Version 20020308: 15114 15115 Fixed a problem with AML Fields where the use of the "AccessAny" 15116 keyword could cause an interpreter error due to attempting to read 15117 or write beyond the end of the parent Operation Region. 15118 15119 Fixed a problem in the SystemMemory Operation Region handler where 15120 an attempt was made to map memory beyond the end of the region. 15121 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 15122 errors on some Linux systems. 15123 15124 Fixed a problem where the interpreter/namespace "search to root" 15125 algorithm was not functioning for some object types. Relaxed the 15126 internal restriction on the search to allow upsearches for all 15127 external object types as well as most internal types. 15128 15129 15130 2) Linux: 15131 15132 We now use safe_halt() macro versus individual calls to sti | hlt. 15133 15134 Writing to the processor limit interface should now work. "echo 1" 15135 will increase the limit, 2 will decrease, and 0 will reset to the 15136 15137 default. 15138 15139 15140 3) ASL compiler: 15141 15142 Fixed segfault on Linux version. 15143 15144 15145 ---------------------------------------- 15146 Summary of changes for this release: 02_25_02 15147 15148 1) ACPI CA Core Subsystem: 15149 15150 15151 Fixed a problem where the GPE bit masks were not initialized 15152 properly, causing erratic GPE behavior. 15153 15154 Implemented limited support for multiple calling conventions. The 15155 code can be generated with either the VPL (variable parameter 15156 list, or "C") convention, or the FPL (fixed parameter list, or 15157 "Pascal") convention. The core subsystem is about 3.4% smaller 15158 when generated with FPL. 15159 15160 15161 2) Linux 15162 15163 Re-add some /proc/acpi/event functionality that was lost during 15164 the rewrite 15165 15166 Resolved issue with /proc events for fixed-feature buttons showing 15167 up as the system device. 15168 15169 Fixed checks on C2/C3 latencies to be inclusive of maximum values. 15170 15171 Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 15172 15173 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 15174 15175 Fixed limit interface & usage to fix bugs with passive cooling 15176 hysterisis. 15177 15178 Restructured PRT support. 15179 15180 15181 ---------------------------------------- 15182 Summary of changes for this label: 02_14_02 15183 15184 15185 1) ACPI CA Core Subsystem: 15186 15187 Implemented support in AcpiLoadTable to allow loading of FACS and 15188 FADT tables. 15189 15190 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 15191 been removed. All 64-bit platforms should be migrated to the ACPI 15192 2.0 tables. The actbl71.h header has been removed from the source 15193 tree. 15194 15195 All C macros defined within the subsystem have been prefixed with 15196 "ACPI_" to avoid collision with other system include files. 15197 15198 Removed the return value for the two AcpiOsPrint interfaces, since 15199 it is never used and causes lint warnings for ignoring the return 15200 value. 15201 15202 Added error checking to all internal mutex acquire and release 15203 calls. Although a failure from one of these interfaces is 15204 probably a fatal system error, these checks will cause the 15205 immediate abort of the currently executing method or interface. 15206 15207 Fixed a problem where the AcpiSetCurrentResources interface could 15208 fault. This was a side effect of the deployment of the new memory 15209 allocation model. 15210 15211 Fixed a couple of problems with the Global Lock support introduced 15212 in the last major build. The "common" (1.0/2.0) internal FACS was 15213 being overwritten with the FACS signature and clobbering the 15214 Global Lock pointer. Also, the actual firmware FACS was being 15215 unmapped after construction of the "common" FACS, preventing 15216 access to the actual Global Lock field within it. The "common" 15217 internal FACS is no longer installed as an actual ACPI table; it 15218 is used simply as a global. 15219 15220 Code and Data Size: Current core subsystem library sizes are shown 15221 below. These are the code and data sizes for the acpica.lib 15222 produced by the Microsoft Visual C++ 6.0 compiler, and these 15223 values do not include any ACPI driver or OSPM code. The debug 15224 version of the code includes the debug output trace mechanism and 15225 has a larger code and data size. Note that these values will vary 15226 depending on the efficiency of the compiler and the compiler 15227 options used during generation. 15228 15229 Previous Release (02_07_01) 15230 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 15231 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 15232 Current Release: 15233 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 15234 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 15235 15236 15237 2) Linux 15238 15239 Updated Linux-specific code for core macro and OSL interface 15240 changes described above. 15241 15242 Improved /proc/acpi/event. It now can be opened only once and has 15243 proper poll functionality. 15244 15245 Fixed and restructured power management (acpi_bus). 15246 15247 Only create /proc "view by type" when devices of that class exist. 15248 15249 Fixed "charging/discharging" bug (and others) in acpi_battery. 15250 15251 Improved thermal zone code. 15252 15253 15254 3) ASL Compiler, version X2039: 15255 15256 15257 Implemented the new compiler restriction on ASL String hex/octal 15258 escapes to non-null, ASCII values. An error results if an invalid 15259 value is used. (This will require an ACPI 2.0 specification 15260 change.) 15261 15262 AML object labels that are output to the optional C and ASM source 15263 are now prefixed with both the ACPI table signature and table ID 15264 to help guarantee uniqueness within a large BIOS project. 15265 15266 15267 ---------------------------------------- 15268 Summary of changes for this label: 02_01_02 15269 15270 1) ACPI CA Core Subsystem: 15271 15272 ACPI 2.0 support is complete in the entire Core Subsystem and the 15273 ASL compiler. All new ACPI 2.0 operators are implemented and all 15274 other changes for ACPI 2.0 support are complete. With 15275 simultaneous code and data optimizations throughout the subsystem, 15276 ACPI 2.0 support has been implemented with almost no additional 15277 cost in terms of code and data size. 15278 15279 Implemented a new mechanism for allocation of return buffers. If 15280 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 15281 be allocated on behalf of the caller. Consolidated all return 15282 buffer validation and allocation to a common procedure. Return 15283 buffers will be allocated via the primary OSL allocation interface 15284 since it appears that a separate pool is not needed by most users. 15285 If a separate pool is required for these buffers, the caller can 15286 still use the original mechanism and pre-allocate the buffer(s). 15287 15288 Implemented support for string operands within the DerefOf 15289 operator. 15290 15291 Restructured the Hardware and Event managers to be table driven, 15292 simplifying the source code and reducing the amount of generated 15293 code. 15294 15295 Split the common read/write low-level ACPI register bitfield 15296 procedure into a separate read and write, simplifying the code 15297 considerably. 15298 15299 Obsoleted the AcpiOsCallocate OSL interface. This interface was 15300 used only a handful of times and didn't have enough critical mass 15301 for a separate interface. Replaced with a common calloc procedure 15302 in the core. 15303 15304 Fixed a reported problem with the GPE number mapping mechanism 15305 that allows GPE1 numbers to be non-contiguous with GPE0. 15306 Reorganized the GPE information and shrunk a large array that was 15307 originally large enough to hold info for all possible GPEs (256) 15308 to simply large enough to hold all GPEs up to the largest GPE 15309 number on the machine. 15310 15311 Fixed a reported problem with resource structure alignment on 64- 15312 bit platforms. 15313 15314 Changed the AcpiEnableEvent and AcpiDisableEvent external 15315 interfaces to not require any flags for the common case of 15316 enabling/disabling a GPE. 15317 15318 Implemented support to allow a "Notify" on a Processor object. 15319 15320 Most TBDs in comments within the source code have been resolved 15321 and eliminated. 15322 15323 15324 Fixed a problem in the interpreter where a standalone parent 15325 prefix (^) was not handled correctly in the interpreter and 15326 debugger. 15327 15328 Removed obsolete and unnecessary GPE save/restore code. 15329 15330 Implemented Field support in the ASL Load operator. This allows a 15331 table to be loaded from a named field, in addition to loading a 15332 table directly from an Operation Region. 15333 15334 Implemented timeout and handle support in the external Global Lock 15335 interfaces. 15336 15337 Fixed a problem in the AcpiDump utility where pathnames were no 15338 longer being generated correctly during the dump of named objects. 15339 15340 Modified the AML debugger to give a full display of if/while 15341 predicates instead of just one AML opcode at a time. (The 15342 predicate can have several nested ASL statements.) The old method 15343 was confusing during single stepping. 15344 15345 Code and Data Size: Current core subsystem library sizes are shown 15346 below. These are the code and data sizes for the acpica.lib 15347 produced by the Microsoft Visual C++ 6.0 compiler, and these 15348 values do not include any ACPI driver or OSPM code. The debug 15349 version of the code includes the debug output trace mechanism and 15350 has a larger code and data size. Note that these values will vary 15351 depending on the efficiency of the compiler and the compiler 15352 options used during generation. 15353 15354 Previous Release (12_18_01) 15355 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 15356 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 15357 Current Release: 15358 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 15359 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 15360 15361 2) Linux 15362 15363 Implemented fix for PIIX reverse throttling errata (Processor 15364 driver) 15365 15366 Added new Limit interface (Processor and Thermal drivers) 15367 15368 New thermal policy (Thermal driver) 15369 15370 Many updates to /proc 15371 15372 Battery "low" event support (Battery driver) 15373 15374 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 15375 15376 IA32 - IA64 initialization unification, no longer experimental 15377 15378 Menuconfig options redesigned 15379 15380 3) ASL Compiler, version X2037: 15381 15382 Implemented several new output features to simplify integration of 15383 AML code into firmware: 1) Output the AML in C source code with 15384 labels for each named ASL object. The original ASL source code 15385 is interleaved as C comments. 2) Output the AML in ASM source code 15386 with labels and interleaved ASL source. 3) Output the AML in 15387 raw hex table form, in either C or ASM. 15388 15389 Implemented support for optional string parameters to the 15390 LoadTable operator. 15391 15392 Completed support for embedded escape sequences within string 15393 literals. The compiler now supports all single character escapes 15394 as well as the Octal and Hex escapes. Note: the insertion of a 15395 null byte into a string literal (via the hex/octal escape) causes 15396 the string to be immediately terminated. A warning is issued. 15397 15398 Fixed a problem where incorrect AML was generated for the case 15399 where an ASL namepath consists of a single parent prefix ( 15400 15401 ) with no trailing name segments. 15402 15403 The compiler has been successfully generated with a 64-bit C 15404 compiler. 15405 15406 15407 15408 15409 ---------------------------------------- 15410 Summary of changes for this label: 12_18_01 15411 15412 1) Linux 15413 15414 Enhanced blacklist with reason and severity fields. Any table's 15415 signature may now be used to identify a blacklisted system. 15416 15417 Call _PIC control method to inform the firmware which interrupt 15418 model the OS is using. Turn on any disabled link devices. 15419 15420 Cleaned up busmgr /proc error handling (Andreas Dilger) 15421 15422 2) ACPI CA Core Subsystem: 15423 15424 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 15425 while loop) 15426 15427 Completed implementation of the ACPI 2.0 "Continue", 15428 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 15429 operators. All new ACPI 2.0 operators are now implemented in both 15430 the ASL compiler and the AML interpreter. The only remaining ACPI 15431 2.0 task is support for the String data type in the DerefOf 15432 operator. Fixed a problem with AcquireMutex where the status code 15433 was lost if the caller had to actually wait for the mutex. 15434 15435 Increased the maximum ASL Field size from 64K bits to 4G bits. 15436 15437 Completed implementation of the external Global Lock interfaces -- 15438 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 15439 Handler parameters were added. 15440 15441 Completed another pass at removing warnings and issues when 15442 compiling with 64-bit compilers. The code now compiles cleanly 15443 with the Intel 64-bit C/C++ compiler. Most notably, the pointer 15444 add and subtract (diff) macros have changed considerably. 15445 15446 15447 Created and deployed a new ACPI_SIZE type that is 64-bits wide on 15448 64-bit platforms, 32-bits on all others. This type is used 15449 wherever memory allocation and/or the C sizeof() operator is used, 15450 and affects the OSL memory allocation interfaces AcpiOsAllocate 15451 and AcpiOsCallocate. 15452 15453 Implemented sticky user breakpoints in the AML debugger. 15454 15455 Code and Data Size: Current core subsystem library sizes are shown 15456 below. These are the code and data sizes for the acpica.lib 15457 produced by the Microsoft Visual C++ 6.0 compiler, and these 15458 values do not include any ACPI driver or OSPM code. The debug 15459 version of the code includes the debug output trace mechanism and 15460 has a larger code and data size. Note that these values will vary 15461 depending on the efficiency of the compiler and the compiler 15462 options used during generation. 15463 15464 Previous Release (12_05_01) 15465 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 15466 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 15467 Current Release: 15468 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 15469 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 15470 15471 3) ASL Compiler, version X2034: 15472 15473 Now checks for (and generates an error if detected) the use of a 15474 Break or Continue statement without an enclosing While statement. 15475 15476 15477 Successfully generated the compiler with the Intel 64-bit C 15478 compiler. 15479 15480 ---------------------------------------- 15481 Summary of changes for this label: 12_05_01 15482 15483 1) ACPI CA Core Subsystem: 15484 15485 The ACPI 2.0 CopyObject operator is fully implemented. This 15486 operator creates a new copy of an object (and is also used to 15487 bypass the "implicit conversion" mechanism of the Store operator.) 15488 15489 The ACPI 2.0 semantics for the SizeOf operator are fully 15490 implemented. The change is that performing a SizeOf on a 15491 reference object causes an automatic dereference of the object to 15492 tha actual value before the size is evaluated. This behavior was 15493 undefined in ACPI 1.0. 15494 15495 The ACPI 2.0 semantics for the Extended IRQ resource descriptor 15496 have been implemented. The interrupt polarity and mode are now 15497 independently set. 15498 15499 Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 15500 appearing in Package objects were not properly converted to 15501 integers when the internal Package was converted to an external 15502 object (via the AcpiEvaluateObject interface.) 15503 15504 Fixed a problem with the namespace object deletion mechanism for 15505 objects created by control methods. There were two parts to this 15506 problem: 1) Objects created during the initialization phase method 15507 parse were not being deleted, and 2) The object owner ID mechanism 15508 to track objects was broken. 15509 15510 Fixed a problem where the use of the ASL Scope operator within a 15511 control method would result in an invalid opcode exception. 15512 15513 Fixed a problem introduced in the previous label where the buffer 15514 length required for the _PRT structure was not being returned 15515 correctly. 15516 15517 Code and Data Size: Current core subsystem library sizes are shown 15518 below. These are the code and data sizes for the acpica.lib 15519 produced by the Microsoft Visual C++ 6.0 compiler, and these 15520 values do not include any ACPI driver or OSPM code. The debug 15521 version of the code includes the debug output trace mechanism and 15522 has a larger code and data size. Note that these values will vary 15523 depending on the efficiency of the compiler and the compiler 15524 options used during generation. 15525 15526 Previous Release (11_20_01) 15527 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 15528 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 15529 15530 Current Release: 15531 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 15532 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 15533 15534 2) Linux: 15535 15536 Updated all files to apply cleanly against 2.4.16. 15537 15538 Added basic PCI Interrupt Routing Table (PRT) support for IA32 15539 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This 15540 version supports both static and dyanmic PRT entries, but dynamic 15541 entries are treated as if they were static (not yet 15542 reconfigurable). Architecture- specific code to use this data is 15543 absent on IA32 but should be available shortly. 15544 15545 Changed the initialization sequence to start the ACPI interpreter 15546 (acpi_init) prior to initialization of the PCI driver (pci_init) 15547 in init/main.c. This ordering is required to support PRT and 15548 facilitate other (future) enhancement. A side effect is that the 15549 ACPI bus driver and certain device drivers can no longer be loaded 15550 as modules. 15551 15552 Modified the 'make menuconfig' options to allow PCI Interrupt 15553 Routing support to be included without the ACPI Bus and other 15554 device drivers. 15555 15556 3) ASL Compiler, version X2033: 15557 15558 Fixed some issues with the use of the new CopyObject and 15559 DataTableRegion operators. Both are fully functional. 15560 15561 ---------------------------------------- 15562 Summary of changes for this label: 11_20_01 15563 15564 20 November 2001. Summary of changes for this release. 15565 15566 1) ACPI CA Core Subsystem: 15567 15568 Updated Index support to match ACPI 2.0 semantics. Storing a 15569 Integer, String, or Buffer to an Index of a Buffer will store only 15570 the least-significant byte of the source to the Indexed buffer 15571 byte. Multiple writes are not performed. 15572 15573 Fixed a problem where the access type used in an AccessAs ASL 15574 operator was not recorded correctly into the field object. 15575 15576 Fixed a problem where ASL Event objects were created in a 15577 signalled state. Events are now created in an unsignalled state. 15578 15579 The internal object cache is now purged after table loading and 15580 initialization to reduce the use of dynamic kernel memory -- on 15581 the assumption that object use is greatest during the parse phase 15582 of the entire table (versus the run-time use of individual control 15583 methods.) 15584 15585 ACPI 2.0 variable-length packages are now fully operational. 15586 15587 Code and Data Size: Code and Data optimizations have permitted new 15588 feature development with an actual reduction in the library size. 15589 Current core subsystem library sizes are shown below. These are 15590 the code and data sizes for the acpica.lib produced by the 15591 Microsoft Visual C++ 6.0 compiler, and these values do not include 15592 any ACPI driver or OSPM code. The debug version of the code 15593 includes the debug output trace mechanism and has a larger code 15594 and data size. Note that these values will vary depending on the 15595 efficiency of the compiler and the compiler options used during 15596 generation. 15597 15598 Previous Release (11_09_01): 15599 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 15600 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 15601 15602 Current Release: 15603 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 15604 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 15605 15606 2) Linux: 15607 15608 Enhanced the ACPI boot-time initialization code to allow the use 15609 of Local APIC tables for processor enumeration on IA-32, and to 15610 pave the way for a fully MPS-free boot (on SMP systems) in the 15611 near future. This functionality replaces 15612 arch/i386/kernel/acpitables.c, which was introduced in an earlier 15613 2.4.15-preX release. To enable this feature you must add 15614 "acpi_boot=on" to the kernel command line -- see the help entry 15615 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 15616 the works... 15617 15618 Restructured the configuration options to allow boot-time table 15619 parsing support without inclusion of the ACPI Interpreter (and 15620 other) code. 15621 15622 NOTE: This release does not include fixes for the reported events, 15623 power-down, and thermal passive cooling issues (coming soon). 15624 15625 3) ASL Compiler: 15626 15627 Added additional typechecking for Fields within restricted access 15628 Operation Regions. All fields within EC and CMOS regions must be 15629 declared with ByteAcc. All fields withing SMBus regions must be 15630 declared with the BufferAcc access type. 15631 15632 Fixed a problem where the listing file output of control methods 15633 no longer interleaved the actual AML code with the ASL source 15634 code. 15635 15636 15637 15638 15639 ---------------------------------------- 15640 Summary of changes for this label: 11_09_01 15641 15642 1) ACPI CA Core Subsystem: 15643 15644 Implemented ACPI 2.0-defined support for writes to fields with a 15645 Buffer, String, or Integer source operand that is smaller than the 15646 target field. In these cases, the source operand is zero-extended 15647 to fill the target field. 15648 15649 Fixed a problem where a Field starting bit offset (within the 15650 parent operation region) was calculated incorrectly if the 15651 15652 alignment of the field differed from the access width. This 15653 affected CreateWordField, CreateDwordField, CreateQwordField, and 15654 possibly other fields that use the "AccessAny" keyword. 15655 15656 Fixed a problem introduced in the 11_02_01 release where indirect 15657 stores through method arguments did not operate correctly. 15658 15659 2) Linux: 15660 15661 Implemented boot-time ACPI table parsing support 15662 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 15663 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 15664 legacy BIOS interfaces (e.g. MPS) for the configuration of system 15665 processors, memory, and interrupts during setup_arch(). Note that 15666 this patch does not include the required architecture-specific 15667 changes required to apply this information -- subsequent patches 15668 will be posted for both IA32 and IA64 to achieve this. 15669 15670 Added low-level sleep support for IA32 platforms, courtesy of Pat 15671 Mochel. This allows IA32 systems to transition to/from various 15672 sleeping states (e.g. S1, S3), although the lack of a centralized 15673 driver model and power-manageable drivers will prevent its 15674 (successful) use on most systems. 15675 15676 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 15677 submenu, unified IA32 and IA64 options, added new "Boot using ACPI 15678 tables" option, etc. 15679 15680 Increased the default timeout for the EC driver from 1ms to 10ms 15681 (1000 cycles of 10us) to try to address AE_TIME errors during EC 15682 transactions. 15683 15684 ---------------------------------------- 15685 Summary of changes for this label: 11_02_01 15686 15687 1) ACPI CA Core Subsystem: 15688 15689 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 15690 (QWordAcc keyword). All ACPI 2.0 64-bit support is now 15691 implemented. 15692 15693 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 15694 changes to support ACPI 2.0 Qword field access. Read/Write 15695 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 15696 accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 15697 the value parameter for the address space handler interface is now 15698 an ACPI_INTEGER. OSL implementations of these interfaces must now 15699 handle the case where the Width parameter is 64. 15700 15701 Index Fields: Fixed a problem where unaligned bit assembly and 15702 disassembly for IndexFields was not supported correctly. 15703 15704 Index and Bank Fields: Nested Index and Bank Fields are now 15705 supported. During field access, a check is performed to ensure 15706 that the value written to an Index or Bank register is not out of 15707 the range of the register. The Index (or Bank) register is 15708 written before each access to the field data. Future support will 15709 include allowing individual IndexFields to be wider than the 15710 DataRegister width. 15711 15712 Fields: Fixed a problem where the AML interpreter was incorrectly 15713 attempting to write beyond the end of a Field/OpRegion. This was 15714 a boundary case that occurred when a DWORD field was written to a 15715 BYTE access OpRegion, forcing multiple writes and causing the 15716 interpreter to write one datum too many. 15717 15718 Fields: Fixed a problem with Field/OpRegion access where the 15719 starting bit address of a field was incorrectly calculated if the 15720 current access type was wider than a byte (WordAcc, DwordAcc, or 15721 QwordAcc). 15722 15723 Fields: Fixed a problem where forward references to individual 15724 FieldUnits (individual Field names within a Field definition) were 15725 not resolved during the AML table load. 15726 15727 Fields: Fixed a problem where forward references from a Field 15728 definition to the parent Operation Region definition were not 15729 resolved during the AML table load. 15730 15731 Fields: Duplicate FieldUnit names within a scope are now detected 15732 during AML table load. 15733 15734 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 15735 returned an incorrect name for the root node. 15736 15737 Code and Data Size: Code and Data optimizations have permitted new 15738 feature development with an actual reduction in the library size. 15739 Current core subsystem library sizes are shown below. These are 15740 the code and data sizes for the acpica.lib produced by the 15741 Microsoft Visual C++ 6.0 compiler, and these values do not include 15742 any ACPI driver or OSPM code. The debug version of the code 15743 includes the debug output trace mechanism and has a larger code 15744 and data size. Note that these values will vary depending on the 15745 efficiency of the compiler and the compiler options used during 15746 generation. 15747 15748 Previous Release (10_18_01): 15749 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 15750 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 15751 15752 Current Release: 15753 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 15754 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 15755 15756 2) Linux: 15757 15758 Improved /proc processor output (Pavel Machek) Re-added 15759 MODULE_LICENSE("GPL") to all modules. 15760 15761 3) ASL Compiler version X2030: 15762 15763 Duplicate FieldUnit names within a scope are now detected and 15764 flagged as errors. 15765 15766 4) Documentation: 15767 15768 Programmer Reference updated to reflect OSL and address space 15769 handler interface changes described above. 15770 15771 ---------------------------------------- 15772 Summary of changes for this label: 10_18_01 15773 15774 ACPI CA Core Subsystem: 15775 15776 Fixed a problem with the internal object reference count mechanism 15777 that occasionally caused premature object deletion. This resolves 15778 all of the outstanding problem reports where an object is deleted 15779 in the middle of an interpreter evaluation. Although this problem 15780 only showed up in rather obscure cases, the solution to the 15781 problem involved an adjustment of all reference counts involving 15782 objects attached to namespace nodes. 15783 15784 Fixed a problem with Field support in the interpreter where 15785 writing to an aligned field whose length is an exact multiple (2 15786 or greater) of the field access granularity would cause an attempt 15787 to write beyond the end of the field. 15788 15789 The top level AML opcode execution functions within the 15790 interpreter have been renamed with a more meaningful and 15791 consistent naming convention. The modules exmonad.c and 15792 exdyadic.c were eliminated. New modules are exoparg1.c, 15793 exoparg2.c, exoparg3.c, and exoparg6.c. 15794 15795 Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 15796 15797 Fixed a problem where the AML debugger was causing some internal 15798 objects to not be deleted during subsystem termination. 15799 15800 Fixed a problem with the external AcpiEvaluateObject interface 15801 where the subsystem would fault if the named object to be 15802 evaluated refered to a constant such as Zero, Ones, etc. 15803 15804 Fixed a problem with IndexFields and BankFields where the 15805 subsystem would fault if the index, data, or bank registers were 15806 not defined in the same scope as the field itself. 15807 15808 Added printf format string checking for compilers that support 15809 this feature. Corrected more than 50 instances of issues with 15810 format specifiers within invocations of ACPI_DEBUG_PRINT 15811 throughout the core subsystem code. 15812 15813 The ASL "Revision" operator now returns the ACPI support level 15814 implemented in the core - the value "2" since the ACPI 2.0 support 15815 is more than 50% implemented. 15816 15817 Enhanced the output of the AML debugger "dump namespace" command 15818 to output in a more human-readable form. 15819 15820 Current core subsystem library code sizes are shown below. These 15821 15822 are the code and data sizes for the acpica.lib produced by the 15823 Microsoft Visual C++ 6.0 compiler, and these values do not include 15824 any ACPI driver or OSPM code. The debug version of the code 15825 includes the full debug trace mechanism -- leading to a much 15826 15827 larger code and data size. Note that these values will vary 15828 depending on the efficiency of the compiler and the compiler 15829 options used during generation. 15830 15831 Previous Label (09_20_01): 15832 Non-Debug Version: 65K Code, 5K Data, 70K Total 15833 Debug Version: 138K Code, 58K Data, 196K Total 15834 15835 This Label: 15836 15837 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 15838 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 15839 15840 Linux: 15841 15842 Implemented a "Bad BIOS Blacklist" to track machines that have 15843 known ASL/AML problems. 15844 15845 Enhanced the /proc interface for the thermal zone driver and added 15846 support for _HOT (the critical suspend trip point). The 'info' 15847 file now includes threshold/policy information, and allows setting 15848 of _SCP (cooling preference) and _TZP (polling frequency) values 15849 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 15850 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 15851 preference to the passive/quiet mode (if supported by the ASL). 15852 15853 Implemented a workaround for a gcc bug that resuted in an OOPs 15854 when loading the control method battery driver. 15855 15856 ---------------------------------------- 15857 Summary of changes for this label: 09_20_01 15858 15859 ACPI CA Core Subsystem: 15860 15861 The AcpiEnableEvent and AcpiDisableEvent interfaces have been 15862 modified to allow individual GPE levels to be flagged as wake- 15863 enabled (i.e., these GPEs are to remain enabled when the platform 15864 sleeps.) 15865 15866 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 15867 support wake-enabled GPEs. This means that upon entering the 15868 sleep state, all GPEs that are not wake-enabled are disabled. 15869 When leaving the sleep state, these GPEs are reenabled. 15870 15871 A local double-precision divide/modulo module has been added to 15872 enhance portability to OS kernels where a 64-bit math library is 15873 not available. The new module is "utmath.c". 15874 15875 Several optimizations have been made to reduce the use of CPU 15876 stack. Originally over 2K, the maximum stack usage is now below 15877 2K at 1860 bytes (1.82k) 15878 15879 Fixed a problem with the AcpiGetFirmwareTable interface where the 15880 root table pointer was not mapped into a logical address properly. 15881 15882 Fixed a problem where a NULL pointer was being dereferenced in the 15883 interpreter code for the ASL Notify operator. 15884 15885 Fixed a problem where the use of the ASL Revision operator 15886 returned an error. This operator now returns the current version 15887 of the ACPI CA core subsystem. 15888 15889 Fixed a problem where objects passed as control method parameters 15890 to AcpiEvaluateObject were always deleted at method termination. 15891 However, these objects may end up being stored into the namespace 15892 by the called method. The object reference count mechanism was 15893 applied to these objects instead of a force delete. 15894 15895 Fixed a problem where static strings or buffers (contained in the 15896 AML code) that are declared as package elements within the ASL 15897 code could cause a fault because the interpreter would attempt to 15898 delete them. These objects are now marked with the "static 15899 object" flag to prevent any attempt to delete them. 15900 15901 Implemented an interpreter optimization to use operands directly 15902 from the state object instead of extracting the operands to local 15903 variables. This reduces stack use and code size, and improves 15904 performance. 15905 15906 The module exxface.c was eliminated as it was an unnecessary extra 15907 layer of code. 15908 15909 Current core subsystem library code sizes are shown below. These 15910 are the code and data sizes for the acpica.lib produced by the 15911 Microsoft Visual C++ 6.0 compiler, and these values do not include 15912 any ACPI driver or OSPM code. The debug version of the code 15913 includes the full debug trace mechanism -- leading to a much 15914 larger code and data size. Note that these values will vary 15915 depending on the efficiency of the compiler and the compiler 15916 options used during generation. 15917 15918 Non-Debug Version: 65K Code, 5K Data, 70K Total 15919 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K 15920 Total (Previously 195K) 15921 15922 Linux: 15923 15924 Support for ACPI 2.0 64-bit integers has been added. All ACPI 15925 Integer objects are now 64 bits wide 15926 15927 All Acpi data types and structures are now in lower case. Only 15928 Acpi macros are upper case for differentiation. 15929 15930 Documentation: 15931 15932 Changes to the external interfaces as described above. 15933 15934 ---------------------------------------- 15935 Summary of changes for this label: 08_31_01 15936 15937 ACPI CA Core Subsystem: 15938 15939 A bug with interpreter implementation of the ASL Divide operator 15940 was found and fixed. The implicit function return value (not the 15941 explicit store operands) was returning the remainder instead of 15942 the quotient. This was a longstanding bug and it fixes several 15943 known outstanding issues on various platforms. 15944 15945 The ACPI_DEBUG_PRINT and function trace entry/exit macros have 15946 been further optimized for size. There are 700 invocations of the 15947 DEBUG_PRINT macro alone, so each optimization reduces the size of 15948 the debug version of the subsystem significantly. 15949 15950 A stack trace mechanism has been implemented. The maximum stack 15951 usage is about 2K on 32-bit platforms. The debugger command "stat 15952 stack" will display the current maximum stack usage. 15953 15954 All public symbols and global variables within the subsystem are 15955 now prefixed with the string "Acpi". This keeps all of the 15956 symbols grouped together in a kernel map, and avoids conflicts 15957 with other kernel subsystems. 15958 15959 Most of the internal fixed lookup tables have been moved into the 15960 code segment via the const operator. 15961 15962 Several enhancements have been made to the interpreter to both 15963 reduce the code size and improve performance. 15964 15965 Current core subsystem library code sizes are shown below. These 15966 are the code and data sizes for the acpica.lib produced by the 15967 Microsoft Visual C++ 6.0 compiler, and these values do not include 15968 any ACPI driver or OSPM code. The debug version of the code 15969 includes the full debug trace mechanism which contains over 700 15970 invocations of the DEBUG_PRINT macro, 500 function entry macro 15971 invocations, and over 900 function exit macro invocations -- 15972 leading to a much larger code and data size. Note that these 15973 values will vary depending on the efficiency of the compiler and 15974 the compiler options used during generation. 15975 15976 Non-Debug Version: 64K Code, 5K Data, 69K Total 15977 Debug Version: 137K Code, 58K Data, 195K Total 15978 15979 Linux: 15980 15981 Implemented wbinvd() macro, pending a kernel-wide definition. 15982 15983 Fixed /proc/acpi/event to handle poll() and short reads. 15984 15985 ASL Compiler, version X2026: 15986 15987 Fixed a problem introduced in the previous label where the AML 15988 15989 code emitted for package objects produced packages with zero 15990 length. 15991 15992 ---------------------------------------- 15993 Summary of changes for this label: 08_16_01 15994 15995 ACPI CA Core Subsystem: 15996 15997 The following ACPI 2.0 ASL operators have been implemented in the 15998 AML interpreter (These are already supported by the Intel ASL 15999 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 16000 ToBuffer. Support for 64-bit AML constants is implemented in the 16001 AML parser, debugger, and disassembler. 16002 16003 The internal memory tracking mechanism (leak detection code) has 16004 been upgraded to reduce the memory overhead (a separate tracking 16005 block is no longer allocated for each memory allocation), and now 16006 supports all of the internal object caches. 16007 16008 The data structures and code for the internal object caches have 16009 been coelesced and optimized so that there is a single cache and 16010 memory list data structure and a single group of functions that 16011 implement generic cache management. This has reduced the code 16012 size in both the debug and release versions of the subsystem. 16013 16014 The DEBUG_PRINT macro(s) have been optimized for size and replaced 16015 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 16016 different, because it generates a single call to an internal 16017 function. This results in a savings of about 90 bytes per 16018 invocation, resulting in an overall code and data savings of about 16019 16% in the debug version of the subsystem. 16020 16021 Linux: 16022 16023 Fixed C3 disk corruption problems and re-enabled C3 on supporting 16024 machines. 16025 16026 Integrated low-level sleep code by Patrick Mochel. 16027 16028 Further tweaked source code Linuxization. 16029 16030 Other minor fixes. 16031 16032 ASL Compiler: 16033 16034 Support for ACPI 2.0 variable length packages is fixed/completed. 16035 16036 Fixed a problem where the optional length parameter for the ACPI 16037 2.0 ToString operator. 16038 16039 Fixed multiple extraneous error messages when a syntax error is 16040 detected within the declaration line of a control method. 16041 16042 ---------------------------------------- 16043 Summary of changes for this label: 07_17_01 16044 16045 ACPI CA Core Subsystem: 16046 16047 Added a new interface named AcpiGetFirmwareTable to obtain any 16048 ACPI table via the ACPI signature. The interface can be called at 16049 any time during kernel initialization, even before the kernel 16050 virtual memory manager is initialized and paging is enabled. This 16051 allows kernel subsystems to obtain ACPI tables very early, even 16052 before the ACPI CA subsystem is initialized. 16053 16054 Fixed a problem where Fields defined with the AnyAcc attribute 16055 could be resolved to the incorrect address under the following 16056 conditions: 1) the field width is larger than 8 bits and 2) the 16057 parent operation region is not defined on a DWORD boundary. 16058 16059 Fixed a problem where the interpreter is not being locked during 16060 namespace initialization (during execution of the _INI control 16061 methods), causing an error when an attempt is made to release it 16062 later. 16063 16064 ACPI 2.0 support in the AML Interpreter has begun and will be 16065 ongoing throughout the rest of this year. In this label, The Mod 16066 operator is implemented. 16067 16068 Added a new data type to contain full PCI addresses named 16069 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 16070 and Function values. 16071 16072 Linux: 16073 16074 Enhanced the Linux version of the source code to change most 16075 capitalized ACPI type names to lowercase. For example, all 16076 instances of ACPI_STATUS are changed to acpi_status. This will 16077 result in a large diff, but the change is strictly cosmetic and 16078 aligns the CA code closer to the Linux coding standard. 16079 16080 OSL Interfaces: 16081 16082 The interfaces to the PCI configuration space have been changed to 16083 add the PCI Segment number and to split the single 32-bit combined 16084 DeviceFunction field into two 16-bit fields. This was 16085 accomplished by moving the four values that define an address in 16086 PCI configuration space (segment, bus, device, and function) to 16087 the new ACPI_PCI_ID structure. 16088 16089 The changes to the PCI configuration space interfaces led to a 16090 reexamination of the complete set of address space access 16091 interfaces for PCI, I/O, and Memory. The previously existing 18 16092 interfaces have proven difficult to maintain (any small change 16093 must be propagated across at least 6 interfaces) and do not easily 16094 allow for future expansion to 64 bits if necessary. Also, on some 16095 systems, it would not be appropriate to demultiplex the access 16096 width (8, 16, 32,or 64) before calling the OSL if the 16097 corresponding native OS interfaces contain a similar access width 16098 parameter. For these reasons, the 18 address space interfaces 16099 have been replaced by these 6 new ones: 16100 16101 AcpiOsReadPciConfiguration 16102 AcpiOsWritePciConfiguration 16103 AcpiOsReadMemory 16104 AcpiOsWriteMemory 16105 AcpiOsReadPort 16106 AcpiOsWritePort 16107 16108 Added a new interface named AcpiOsGetRootPointer to allow the OSL 16109 to perform the platform and/or OS-specific actions necessary to 16110 obtain the ACPI RSDP table pointer. On IA-32 platforms, this 16111 interface will simply call down to the CA core to perform the low- 16112 memory search for the table. On IA-64, the RSDP is obtained from 16113 EFI. Migrating this interface to the OSL allows the CA core to 16114 16115 remain OS and platform independent. 16116 16117 Added a new interface named AcpiOsSignal to provide a generic 16118 "function code and pointer" interface for various miscellaneous 16119 signals and notifications that must be made to the host OS. The 16120 first such signals are intended to support the ASL Fatal and 16121 Breakpoint operators. In the latter case, the AcpiOsBreakpoint 16122 interface has been obsoleted. 16123 16124 The definition of the AcpiFormatException interface has been 16125 changed to simplify its use. The caller no longer must supply a 16126 buffer to the call; A pointer to a const string is now returned 16127 directly. This allows the call to be easily used in printf 16128 statements, etc. since the caller does not have to manage a local 16129 buffer. 16130 16131 16132 ASL Compiler, Version X2025: 16133 16134 The ACPI 2.0 Switch/Case/Default operators have been implemented 16135 and are fully functional. They will work with all ACPI 1.0 16136 interpreters, since the operators are simply translated to If/Else 16137 pairs. 16138 16139 The ACPI 2.0 ElseIf operator is implemented and will also work 16140 with 1.0 interpreters, for the same reason. 16141 16142 Implemented support for ACPI 2.0 variable-length packages. These 16143 packages have a separate opcode, and their size is determined by 16144 the interpreter at run-time. 16145 16146 Documentation The ACPI CA Programmer Reference has been updated to 16147 reflect the new interfaces and changes to existing interfaces. 16148 16149 ------------------------------------------ 16150 Summary of changes for this label: 06_15_01 16151 16152 ACPI CA Core Subsystem: 16153 16154 Fixed a problem where a DWORD-accessed field within a Buffer 16155 object would get its byte address inadvertently rounded down to 16156 the nearest DWORD. Buffers are always Byte-accessible. 16157 16158 ASL Compiler, version X2024: 16159 16160 Fixed a problem where the Switch() operator would either fault or 16161 hang the compiler. Note however, that the AML code for this ACPI 16162 2.0 operator is not yet implemented. 16163 16164 Compiler uses the new AcpiOsGetTimer interface to obtain compile 16165 timings. 16166 16167 Implementation of the CreateField operator automatically converts 16168 a reference to a named field within a resource descriptor from a 16169 byte offset to a bit offset if required. 16170 16171 Added some missing named fields from the resource descriptor 16172 support. These are the names that are automatically created by the 16173 compiler to reference fields within a descriptor. They are only 16174 valid at compile time and are not passed through to the AML 16175 interpreter. 16176 16177 Resource descriptor named fields are now typed as Integers and 16178 subject to compile-time typechecking when used in expressions. 16179 16180 ------------------------------------------ 16181 Summary of changes for this label: 05_18_01 16182 16183 ACPI CA Core Subsystem: 16184 16185 Fixed a couple of problems in the Field support code where bits 16186 from adjacent fields could be returned along with the proper field 16187 bits. Restructured the field support code to improve performance, 16188 readability and maintainability. 16189 16190 New DEBUG_PRINTP macro automatically inserts the procedure name 16191 into the output, saving hundreds of copies of procedure name 16192 strings within the source, shrinking the memory footprint of the 16193 debug version of the core subsystem. 16194 16195 Source Code Structure: 16196 16197 The source code directory tree was restructured to reflect the 16198 current organization of the component architecture. Some files 16199 and directories have been moved and/or renamed. 16200 16201 Linux: 16202 16203 Fixed leaking kacpidpc processes. 16204 16205 Fixed queueing event data even when /proc/acpi/event is not 16206 opened. 16207 16208 ASL Compiler, version X2020: 16209 16210 Memory allocation performance enhancement - over 24X compile time 16211 improvement on large ASL files. Parse nodes and namestring 16212 buffers are now allocated from a large internal compiler buffer. 16213 16214 The temporary .SRC file is deleted unless the "-s" option is 16215 specified 16216 16217 The "-d" debug output option now sends all output to the .DBG file 16218 instead of the console. 16219 16220 "External" second parameter is now optional 16221 16222 "ElseIf" syntax now properly allows the predicate 16223 16224 Last operand to "Load" now recognized as a Target operand 16225 16226 Debug object can now be used anywhere as a normal object. 16227 16228 ResourceTemplate now returns an object of type BUFFER 16229 16230 EISAID now returns an object of type INTEGER 16231 16232 "Index" now works with a STRING operand 16233 16234 "LoadTable" now accepts optional parameters 16235 16236 "ToString" length parameter is now optional 16237 16238 "Interrupt (ResourceType," parse error fixed. 16239 16240 "Register" with a user-defined region space parse error fixed 16241 16242 Escaped backslash at the end of a string ("\\") scan/parse error 16243 fixed 16244 16245 "Revision" is now an object of type INTEGER. 16246 16247 16248 16249 ------------------------------------------ 16250 Summary of changes for this label: 05_02_01 16251 16252 Linux: 16253 16254 /proc/acpi/event now blocks properly. 16255 16256 Removed /proc/sys/acpi. You can still dump your DSDT from 16257 /proc/acpi/dsdt. 16258 16259 ACPI CA Core Subsystem: 16260 16261 Fixed a problem introduced in the previous label where some of the 16262 "small" resource descriptor types were not recognized. 16263 16264 Improved error messages for the case where an ASL Field is outside 16265 the range of the parent operation region. 16266 16267 ASL Compiler, version X2018: 16268 16269 16270 Added error detection for ASL Fields that extend beyond the length 16271 of the parent operation region (only if the length of the region 16272 is known at compile time.) This includes fields that have a 16273 minimum access width that is smaller than the parent region, and 16274 individual field units that are partially or entirely beyond the 16275 extent of the parent. 16276 16277 16278 16279 ------------------------------------------ 16280 Summary of changes for this label: 04_27_01 16281 16282 ACPI CA Core Subsystem: 16283 16284 Fixed a problem where the namespace mutex could be released at the 16285 wrong time during execution of AcpiRemoveAddressSpaceHandler. 16286 16287 Added optional thread ID output for debug traces, to simplify 16288 debugging of multiple threads. Added context switch notification 16289 when the debug code realizes that a different thread is now 16290 executing ACPI code. 16291 16292 Some additional external data types have been prefixed with the 16293 string "ACPI_" for consistency. This may effect existing code. 16294 The data types affected are the external callback typedefs - e.g., 16295 16296 WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 16297 16298 Linux: 16299 16300 Fixed an issue with the OSL semaphore implementation where a 16301 thread was waking up with an error from receiving a SIGCHLD 16302 signal. 16303 16304 Linux version of ACPI CA now uses the system C library for string 16305 manipulation routines instead of a local implementation. 16306 16307 Cleaned up comments and removed TBDs. 16308 16309 ASL Compiler, version X2017: 16310 16311 Enhanced error detection and reporting for all file I/O 16312 operations. 16313 16314 Documentation: 16315 16316 Programmer Reference updated to version 1.06. 16317 16318 16319 16320 ------------------------------------------ 16321 Summary of changes for this label: 04_13_01 16322 16323 ACPI CA Core Subsystem: 16324 16325 Restructured support for BufferFields and RegionFields. 16326 BankFields support is now fully operational. All known 32-bit 16327 limitations on field sizes have been removed. Both BufferFields 16328 and (Operation) RegionFields are now supported by the same field 16329 management code. 16330 16331 Resource support now supports QWORD address and IO resources. The 16332 16/32/64 bit address structures and the Extended IRQ structure 16333 have been changed to properly handle Source Resource strings. 16334 16335 A ThreadId of -1 is now used to indicate a "mutex not acquired" 16336 condition internally and must never be returned by AcpiOsThreadId. 16337 This reserved value was changed from 0 since Unix systems allow a 16338 thread ID of 0. 16339 16340 Linux: 16341 16342 Driver code reorganized to enhance portability 16343 16344 Added a kernel configuration option to control ACPI_DEBUG 16345 16346 Fixed the EC driver to honor _GLK. 16347 16348 ASL Compiler, version X2016: 16349 16350 Fixed support for the "FixedHw" keyword. Previously, the FixedHw 16351 address space was set to 0, not 0x7f as it should be. 16352 16353 ------------------------------------------ 16354 Summary of changes for this label: 03_13_01 16355 16356 ACPI CA Core Subsystem: 16357 16358 During ACPI initialization, the _SB_._INI method is now run if 16359 present. 16360 16361 Notify handler fix - notifies are deferred until the parent method 16362 completes execution. This fixes the "mutex already acquired" 16363 issue seen occasionally. 16364 16365 Part of the "implicit conversion" rules in ACPI 2.0 have been 16366 found to cause compatibility problems with existing ASL/AML. The 16367 convert "result-to-target-type" implementation has been removed 16368 for stores to method Args and Locals. Source operand conversion 16369 is still fully implemented. Possible changes to ACPI 2.0 16370 specification pending. 16371 16372 Fix to AcpiRsCalculatePciRoutingTableLength to return correct 16373 length. 16374 16375 Fix for compiler warnings for 64-bit compiles. 16376 16377 Linux: 16378 16379 /proc output aligned for easier parsing. 16380 16381 Release-version compile problem fixed. 16382 16383 New kernel configuration options documented in Configure.help. 16384 16385 IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 16386 context" message. 16387 16388 OSPM: 16389 16390 Power resource driver integrated with bus manager. 16391 16392 Fixed kernel fault during active cooling for thermal zones. 16393 16394 Source Code: 16395 16396 The source code tree has been restructured. 16397 16398 16399 16400 ------------------------------------------ 16401 Summary of changes for this label: 03_02_01 16402 16403 Linux OS Services Layer (OSL): 16404 16405 Major revision of all Linux-specific code. 16406 16407 Modularized all ACPI-specific drivers. 16408 16409 Added new thermal zone and power resource drivers. 16410 16411 Revamped /proc interface (new functionality is under /proc/acpi). 16412 16413 New kernel configuration options. 16414 16415 Linux known issues: 16416 16417 New kernel configuration options not documented in Configure.help 16418 yet. 16419 16420 16421 Module dependencies not currently implemented. If used, they 16422 should be loaded in this order: busmgr, power, ec, system, 16423 processor, battery, ac_adapter, button, thermal. 16424 16425 Modules will not load if CONFIG_MODVERSION is set. 16426 16427 IBM 600E - entering S5 may reboot instead of shutting down. 16428 16429 IBM 600E - Sleep button may generate "Invalid <NULL> context" 16430 message. 16431 16432 Some systems may fail with "execution mutex already acquired" 16433 message. 16434 16435 ACPI CA Core Subsystem: 16436 16437 Added a new OSL Interface, AcpiOsGetThreadId. This was required 16438 for the deadlock detection code. Defined to return a non-zero, 32- 16439 bit thread ID for the currently executing thread. May be a non- 16440 zero constant integer on single-thread systems. 16441 16442 Implemented deadlock detection for internal subsystem mutexes. We 16443 may add conditional compilation for this code (debug only) later. 16444 16445 ASL/AML Mutex object semantics are now fully supported. This 16446 includes multiple acquires/releases by owner and support for the 16447 16448 Mutex SyncLevel parameter. 16449 16450 A new "Force Release" mechanism automatically frees all ASL 16451 Mutexes that have been acquired but not released when a thread 16452 exits the interpreter. This forces conformance to the ACPI spec 16453 ("All mutexes must be released when an invocation exits") and 16454 prevents deadlocked ASL threads. This mechanism can be expanded 16455 (later) to monitor other resource acquisitions if OEM ASL code 16456 continues to misbehave (which it will). 16457 16458 Several new ACPI exception codes have been added for the Mutex 16459 support. 16460 16461 Recursive method calls are now allowed and supported (the ACPI 16462 spec does in fact allow recursive method calls.) The number of 16463 recursive calls is subject to the restrictions imposed by the 16464 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 16465 parameter. 16466 16467 Implemented support for the SyncLevel parameter for control 16468 methods (ACPI 2.0 feature) 16469 16470 Fixed a deadlock problem when multiple threads attempted to use 16471 the interpreter. 16472 16473 Fixed a problem where the string length of a String package 16474 element was not always set in a package returned from 16475 AcpiEvaluateObject. 16476 16477 Fixed a problem where the length of a String package element was 16478 not always included in the length of the overall package returned 16479 from AcpiEvaluateObject. 16480 16481 Added external interfaces (Acpi*) to the ACPI debug memory 16482 manager. This manager keeps a list of all outstanding 16483 allocations, and can therefore detect memory leaks and attempts to 16484 free memory blocks more than once. Useful for code such as the 16485 power manager, etc. May not be appropriate for device drivers. 16486 Performance with the debug code enabled is slow. 16487 16488 The ACPI Global Lock is now an optional hardware element. 16489 16490 ASL Compiler Version X2015: 16491 16492 Integrated changes to allow the compiler to be generated on 16493 multiple platforms. 16494 16495 Linux makefile added to generate the compiler on Linux 16496 16497 Source Code: 16498 16499 All platform-specific headers have been moved to their own 16500 subdirectory, Include/Platform. 16501 16502 New source file added, Interpreter/ammutex.c 16503 16504 New header file, Include/acstruct.h 16505 16506 Documentation: 16507 16508 The programmer reference has been updated for the following new 16509 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 16510 16511 ------------------------------------------ 16512 Summary of changes for this label: 02_08_01 16513 16514 Core ACPI CA Subsystem: Fixed a problem where an error was 16515 incorrectly returned if the return resource buffer was larger than 16516 the actual data (in the resource interfaces). 16517 16518 References to named objects within packages are resolved to the 16519 16520 full pathname string before packages are returned directly (via 16521 the AcpiEvaluateObject interface) or indirectly via the resource 16522 interfaces. 16523 16524 Linux OS Services Layer (OSL): 16525 16526 Improved /proc battery interface. 16527 16528 16529 Added C-state debugging output and other miscellaneous fixes. 16530 16531 ASL Compiler Version X2014: 16532 16533 All defined method arguments can now be used as local variables, 16534 including the ones that are not actually passed in as parameters. 16535 The compiler tracks initialization of the arguments and issues an 16536 exception if they are used without prior assignment (just like 16537 locals). 16538 16539 The -o option now specifies a filename prefix that is used for all 16540 output files, including the AML output file. Otherwise, the 16541 default behavior is as follows: 1) the AML goes to the file 16542 specified in the DSDT. 2) all other output files use the input 16543 source filename as the base. 16544 16545 ------------------------------------------ 16546 Summary of changes for this label: 01_25_01 16547 16548 Core ACPI CA Subsystem: Restructured the implementation of object 16549 store support within the interpreter. This includes support for 16550 the Store operator as well as any ASL operators that include a 16551 target operand. 16552 16553 Partially implemented support for Implicit Result-to-Target 16554 conversion. This is when a result object is converted on the fly 16555 to the type of an existing target object. Completion of this 16556 support is pending further analysis of the ACPI specification 16557 concerning this matter. 16558 16559 CPU-specific code has been removed from the subsystem (hardware 16560 directory). 16561 16562 New Power Management Timer functions added 16563 16564 Linux OS Services Layer (OSL): Moved system state transition code 16565 to the core, fixed it, and modified Linux OSL accordingly. 16566 16567 Fixed C2 and C3 latency calculations. 16568 16569 16570 We no longer use the compilation date for the version message on 16571 initialization, but retrieve the version from AcpiGetSystemInfo(). 16572 16573 Incorporated for fix Sony VAIO machines. 16574 16575 Documentation: The Programmer Reference has been updated and 16576 reformatted. 16577 16578 16579 ASL Compiler: Version X2013: Fixed a problem where the line 16580 numbering and error reporting could get out of sync in the 16581 presence of multiple include files. 16582 16583 ------------------------------------------ 16584 Summary of changes for this label: 01_15_01 16585 16586 Core ACPI CA Subsystem: 16587 16588 Implemented support for type conversions in the execution of the 16589 ASL Concatenate operator (The second operand is converted to 16590 match the type of the first operand before concatenation.) 16591 16592 Support for implicit source operand conversion is partially 16593 implemented. The ASL source operand types Integer, Buffer, and 16594 String are freely interchangeable for most ASL operators and are 16595 converted by the interpreter on the fly as required. Implicit 16596 Target operand conversion (where the result is converted to the 16597 target type before storing) is not yet implemented. 16598 16599 Support for 32-bit and 64-bit BCD integers is implemented. 16600 16601 Problem fixed where a field read on an aligned field could cause a 16602 read past the end of the field. 16603 16604 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 16605 does not return a value, but the caller expects one. (The ASL 16606 compiler flags this as a warning.) 16607 16608 ASL Compiler: 16609 16610 Version X2011: 16611 1. Static typechecking of all operands is implemented. This 16612 prevents the use of invalid objects (such as using a Package where 16613 an Integer is required) at compile time instead of at interpreter 16614 run-time. 16615 2. The ASL source line is printed with ALL errors and warnings. 16616 3. Bug fix for source EOF without final linefeed. 16617 4. Debug option is split into a parse trace and a namespace trace. 16618 5. Namespace output option (-n) includes initial values for 16619 integers and strings. 16620 6. Parse-only option added for quick syntax checking. 16621 7. Compiler checks for duplicate ACPI name declarations 16622 16623 Version X2012: 16624 1. Relaxed typechecking to allow interchangeability between 16625 strings, integers, and buffers. These types are now converted by 16626 the interpreter at runtime. 16627 2. Compiler reports time taken by each internal subsystem in the 16628 debug output file. 16629 16630 16631 ------------------------------------------ 16632 Summary of changes for this label: 12_14_00 16633 16634 ASL Compiler: 16635 16636 This is the first official release of the compiler. Since the 16637 compiler requires elements of the Core Subsystem, this label 16638 synchronizes everything. 16639 16640 ------------------------------------------ 16641 Summary of changes for this label: 12_08_00 16642 16643 16644 Fixed a problem where named references within the ASL definition 16645 of both OperationRegions and CreateXXXFields did not work 16646 properly. The symptom was an AE_AML_OPERAND_TYPE during 16647 initialization of the region/field. This is similar (but not 16648 related internally) to the problem that was fixed in the last 16649 label. 16650 16651 Implemented both 32-bit and 64-bit support for the BCD ASL 16652 functions ToBCD and FromBCD. 16653 16654 Updated all legal headers to include "2000" in the copyright 16655 years. 16656 16657 ------------------------------------------ 16658 Summary of changes for this label: 12_01_00 16659 16660 Fixed a problem where method invocations within the ASL definition 16661 of both OperationRegions and CreateXXXFields did not work 16662 properly. The symptom was an AE_AML_OPERAND_TYPE during 16663 initialization of the region/field: 16664 16665 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 16666 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 16667 (0x3005) 16668 16669 Fixed a problem where operators with more than one nested 16670 subexpression would fail. The symptoms were varied, by mostly 16671 AE_AML_OPERAND_TYPE errors. This was actually a rather serious 16672 problem that has gone unnoticed until now. 16673 16674 Subtract (Add (1,2), Multiply (3,4)) 16675 16676 Fixed a problem where AcpiGetHandle didn't quite get fixed in the 16677 previous build (The prefix part of a relative path was handled 16678 incorrectly). 16679 16680 Fixed a problem where Operation Region initialization failed if 16681 the operation region name was a "namepath" instead of a simple 16682 "nameseg". Symptom was an AE_NO_OPERAND error. 16683 16684 Fixed a problem where an assignment to a local variable via the 16685 indirect RefOf mechanism only worked for the first such 16686 assignment. Subsequent assignments were ignored. 16687 16688 ------------------------------------------ 16689 Summary of changes for this label: 11_15_00 16690 16691 ACPI 2.0 table support with backwards support for ACPI 1.0 and the 16692 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 16693 the AML interpreter does NOT have support for the new 2.0 ASL 16694 grammar terms at this time. 16695 16696 All ACPI hardware access is via the GAS structures in the ACPI 2.0 16697 FADT. 16698 16699 All physical memory addresses across all platforms are now 64 bits 16700 wide. Logical address width remains dependent on the platform 16701 (i.e., "void *"). 16702 16703 AcpiOsMapMemory interface changed to a 64-bit physical address. 16704 16705 The AML interpreter integer size is now 64 bits, as per the ACPI 16706 2.0 specification. 16707 16708 For backwards compatibility with ACPI 1.0, ACPI tables with a 16709 revision number less than 2 use 32-bit integers only. 16710 16711 Fixed a problem where the evaluation of OpRegion operands did not 16712 always resolve them to numbers properly. 16713 16714 ------------------------------------------ 16715 Summary of changes for this label: 10_20_00 16716 16717 Fix for CBN_._STA issue. This fix will allow correct access to 16718 CBN_ OpRegions when the _STA returns 0x8. 16719 16720 Support to convert ACPI constants (Ones, Zeros, One) to actual 16721 values before a package object is returned 16722 16723 Fix for method call as predicate to if/while construct causing 16724 incorrect if/while behavior 16725 16726 Fix for Else block package lengths sometimes calculated wrong (if 16727 block > 63 bytes) 16728 16729 Fix for Processor object length field, was always zero 16730 16731 Table load abort if FACP sanity check fails 16732 16733 Fix for problem with Scope(name) if name already exists 16734 16735 Warning emitted if a named object referenced cannot be found 16736 (resolved) during method execution. 16737 16738 16739 16740 16741 16742 ------------------------------------------ 16743 Summary of changes for this label: 9_29_00 16744 16745 New table initialization interfaces: AcpiInitializeSubsystem no 16746 longer has any parameters AcpiFindRootPointer - Find the RSDP (if 16747 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 16748 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 16749 AcpiLoadTables 16750 16751 Note: These interface changes require changes to all existing OSDs 16752 16753 The PCI_Config default address space handler is always installed 16754 at the root namespace object. 16755 16756 ------------------------------------------- 16757 Summary of changes for this label: 09_15_00 16758 16759 The new initialization architecture is implemented. New 16760 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 16761 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 16762 16763 (Namespace is automatically loaded when a table is loaded) 16764 16765 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 16766 52 bytes to 32 bytes. There is usually one of these for every 16767 namespace object, so the memory savings is significant. 16768 16769 Implemented just-in-time evaluation of the CreateField operators. 16770 16771 Bug fixes for IA-64 support have been integrated. 16772 16773 Additional code review comments have been implemented 16774 16775 The so-called "third pass parse" has been replaced by a final walk 16776 through the namespace to initialize all operation regions (address 16777 spaces) and fields that have not yet been initialized during the 16778 execution of the various _INI and REG methods. 16779 16780 New file - namespace/nsinit.c 16781 16782 ------------------------------------------- 16783 Summary of changes for this label: 09_01_00 16784 16785 Namespace manager data structures have been reworked to change the 16786 primary object from a table to a single object. This has 16787 resulted in dynamic memory savings of 3X within the namespace and 16788 2X overall in the ACPI CA subsystem. 16789 16790 Fixed problem where the call to AcpiEvFindPciRootBuses was 16791 inadvertently left commented out. 16792 16793 Reduced the warning count when generating the source with the GCC 16794 compiler. 16795 16796 Revision numbers added to each module header showing the 16797 SourceSafe version of the file. Please refer to this version 16798 number when giving us feedback or comments on individual modules. 16799 16800 The main object types within the subsystem have been renamed to 16801 clarify their purpose: 16802 16803 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 16804 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 16805 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 16806 16807 NOTE: no changes to the initialization sequence are included in 16808 this label. 16809 16810 ------------------------------------------- 16811 Summary of changes for this label: 08_23_00 16812 16813 Fixed problem where TerminateControlMethod was being called 16814 multiple times per method 16815 16816 Fixed debugger problem where single stepping caused a semaphore to 16817 be oversignalled 16818 16819 Improved performance through additional parse object caching - 16820 added ACPI_EXTENDED_OP type 16821 16822 ------------------------------------------- 16823 Summary of changes for this label: 08_10_00 16824 16825 Parser/Interpreter integration: Eliminated the creation of 16826 complete parse trees for ACPI tables and control methods. 16827 Instead, parse subtrees are created and then deleted as soon as 16828 they are processed (Either entered into the namespace or executed 16829 by the interpreter). This reduces the use of dynamic kernel 16830 memory significantly. (about 10X) 16831 16832 Exception codes broken into classes and renumbered. Be sure to 16833 recompile all code that includes acexcep.h. Hopefully we won't 16834 have to renumber the codes again now that they are split into 16835 classes (environment, programmer, AML code, ACPI table, and 16836 internal). 16837 16838 Fixed some additional alignment issues in the Resource Manager 16839 subcomponent 16840 16841 Implemented semaphore tracking in the AcpiExec utility, and fixed 16842 several places where mutexes/semaphores were being unlocked 16843 without a corresponding lock operation. There are no known 16844 semaphore or mutex "leaks" at this time. 16845 16846 Fixed the case where an ASL Return operator is used to return an 16847 unnamed package. 16848 16849 ------------------------------------------- 16850 Summary of changes for this label: 07_28_00 16851 16852 Fixed a problem with the way addresses were calculated in 16853 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 16854 manifested itself when a Field was created with WordAccess or 16855 DwordAccess, but the field unit defined within the Field was less 16856 16857 than a Word or Dword. 16858 16859 Fixed a problem in AmlDumpOperands() module's loop to pull 16860 operands off of the operand stack to display information. The 16861 problem manifested itself as a TLB error on 64-bit systems when 16862 accessing an operand stack with two or more operands. 16863 16864 Fixed a problem with the PCI configuration space handlers where 16865 context was getting confused between accesses. This required a 16866 change to the generic address space handler and address space 16867 setup definitions. Handlers now get both a global handler context 16868 (this is the one passed in by the user when executing 16869 AcpiInstallAddressSpaceHandler() and a specific region context 16870 that is unique to each region (For example, the _ADR, _SEG and 16871 _BBN values associated with a specific region). The generic 16872 function definitions have changed to the following: 16873 16874 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 16875 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 16876 *HandlerContext, // This used to be void *Context void 16877 *RegionContext); // This is an additional parameter 16878 16879 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 16880 RegionHandle, UINT32 Function, void *HandlerContext, void 16881 **RegionContext); // This used to be **ReturnContext 16882 16883 ------------------------------------------- 16884 Summary of changes for this label: 07_21_00 16885 16886 Major file consolidation and rename. All files within the 16887 interpreter have been renamed as well as most header files. This 16888 was done to prevent collisions with existing files in the host 16889 OSs -- filenames such as "config.h" and "global.h" seem to be 16890 quite common. The VC project files have been updated. All 16891 makefiles will require modification. 16892 16893 The parser/interpreter integration continues in Phase 5 with the 16894 implementation of a complete 2-pass parse (the AML is parsed 16895 twice) for each table; This avoids the construction of a huge 16896 parse tree and therefore reduces the amount of dynamic memory 16897 required by the subsystem. Greater use of the parse object cache 16898 means that performance is unaffected. 16899 16900 Many comments from the two code reviews have been rolled in. 16901 16902 The 64-bit alignment support is complete. 16903 16904 ------------------------------------------- 16905 Summary of changes for this label: 06_30_00 16906 16907 With a nod and a tip of the hat to the technology of yesteryear, 16908 we've added support in the source code for 80 column output 16909 devices. The code is now mostly constrained to 80 columns or 16910 less to support environments and editors that 1) cannot display 16911 or print more than 80 characters on a single line, and 2) cannot 16912 disable line wrapping. 16913 16914 A major restructuring of the namespace data structure has been 16915 completed. The result is 1) cleaner and more 16916 understandable/maintainable code, and 2) a significant reduction 16917 in the dynamic memory requirement for each named ACPI object 16918 (almost half). 16919 16920 ------------------------------------------- 16921 Summary of changes for this label: 06_23_00 16922 16923 Linux support has been added. In order to obtain approval to get 16924 the ACPI CA subsystem into the Linux kernel, we've had to make 16925 quite a few changes to the base subsystem that will affect all 16926 users (all the changes are generic and OS- independent). The 16927 effects of these global changes have been somewhat far reaching. 16928 Files have been merged and/or renamed and interfaces have been 16929 renamed. The major changes are described below. 16930 16931 Osd* interfaces renamed to AcpiOs* to eliminate namespace 16932 pollution/confusion within our target kernels. All OSD 16933 interfaces must be modified to match the new naming convention. 16934 16935 Files merged across the subsystem. A number of the smaller source 16936 and header files have been merged to reduce the file count and 16937 increase the density of the existing files. There are too many 16938 to list here. In general, makefiles that call out individual 16939 files will require rebuilding. 16940 16941 Interpreter files renamed. All interpreter files now have the 16942 prefix am* instead of ie* and is*. 16943 16944 Header files renamed: The acapi.h file is now acpixf.h. The 16945 acpiosd.h file is now acpiosxf.h. We are removing references to 16946 the acronym "API" since it is somewhat windowsy. The new name is 16947 "external interface" or xface or xf in the filenames.j 16948 16949 16950 All manifest constants have been forced to upper case (some were 16951 mixed case.) Also, the string "ACPI_" has been prepended to many 16952 (not all) of the constants, typedefs, and structs. 16953 16954 The globals "DebugLevel" and "DebugLayer" have been renamed 16955 "AcpiDbgLevel" and "AcpiDbgLayer" respectively. 16956 16957 All other globals within the subsystem are now prefixed with 16958 "AcpiGbl_" Internal procedures within the subsystem are now 16959 prefixed with "Acpi" (with only a few exceptions). The original 16960 two-letter abbreviation for the subcomponent remains after "Acpi" 16961 - for example, CmCallocate became AcpiCmCallocate. 16962 16963 Added a source code translation/conversion utility. Used to 16964 generate the Linux source code, it can be modified to generate 16965 other types of source as well. Can also be used to cleanup 16966 existing source by removing extraneous spaces and blank lines. 16967 Found in tools/acpisrc/* 16968 16969 OsdUnMapMemory was renamed to OsdUnmapMemory and then 16970 AcpiOsUnmapMemory. (UnMap became Unmap). 16971 16972 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 16973 When set to one, this indicates that the caller wants to use the 16974 16975 semaphore as a mutex, not a counting semaphore. ACPI CA uses 16976 both types. However, implementers of this call may want to use 16977 different OS primitives depending on the type of semaphore 16978 requested. For example, some operating systems provide separate 16979 16980 "mutex" and "semaphore" interfaces - where the mutex interface is 16981 much faster because it doesn't have all the overhead of a full 16982 semaphore implementation. 16983 16984 Fixed a deadlock problem where a method that accesses the PCI 16985 address space can block forever if it is the first access to the 16986 space. 16987 16988 ------------------------------------------- 16989 Summary of changes for this label: 06_02_00 16990 16991 Support for environments that cannot handle unaligned data 16992 accesses (e.g. firmware and OS environments devoid of alignment 16993 handler technology namely SAL/EFI and the IA-64 Linux kernel) has 16994 been added (via configurable macros) in these three areas: - 16995 Transfer of data from the raw AML byte stream is done via byte 16996 moves instead of word/dword/qword moves. - External objects are 16997 aligned within the user buffer, including package elements (sub- 16998 objects). - Conversion of name strings to UINT32 Acpi Names is now 16999 done byte-wise. 17000 17001 The Store operator was modified to mimic Microsoft's 17002 implementation when storing to a Buffer Field. 17003 17004 Added a check of the BM_STS bit before entering C3. 17005 17006 The methods subdirectory has been obsoleted and removed. A new 17007 file, cmeval.c subsumes the functionality. 17008 17009 A 16-bit (DOS) version of AcpiExec has been developed. The 17010 makefile is under the acpiexec directory. 17011
Indexes created Wed Oct 01 15:09:59 GMT 2025