1---------------------------------------- 228 July 2017. Summary of changes for version 20170728: 3 4 51) ACPICA kernel-resident subsystem: 6 7Fixed a regression seen with small resource descriptors that could cause 8an inadvertent AE_AML_NO_RESOURCE_END_TAG exception. 9 10AML interpreter: Implemented a new feature that allows forward references 11from individual named references within package objects that are 12contained within blocks of "module-level code". This provides 13compatibility with other ACPI implementations and supports existing 14firmware that depends on this feature. Example: 15 16 Name (ABCD, 1) 17 If (ABCD) /* An If() at module-level */ 18 { 19 Name (PKG1, Package() 20 { 21 INT1 /* Forward reference to object INT1 22*/ 23 }) 24 Name (INT1, 0x1234) 25 } 26 27AML Interpreter: Fixed a problem with the Alias() operator where aliases 28to some ASL objects were not handled properly. Objects affected are: 29Mutex, Event, and OperationRegion. 30 31AML Debugger: Enhanced to properly handle AML Alias objects. These 32objects have one level of indirection which was not fully supported by 33the debugger. 34 35Table Manager: Added support to detect and ignore duplicate SSDTs within 36the XSDT/RSDT. This error in the XSDT has been seen in the field. 37 38EFI and EDK2 support: 39 Enabled /WX flag for MSVC builds 40 Added support for AcpiOsStall, AcpiOsSleep, and AcpiOsGetTimer 41 Added local support for 64-bit multiply and shift operations 42 Added support to compile acpidump.efi on Windows 43 Added OSL function stubs for interfaces not used under EFI 44 45Added additional support for the _DMA predefined name. _DMA returns a 46buffer containing a resource template. This change add support within the 47resource manager (AcpiWalkResourceBuffer) to walk and parse this list of 48resource descriptors. Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> 49 50 512) iASL Compiler/Disassembler and Tools: 52 53iASL: Fixed a problem where the internal input line buffer(s) could 54overflow if there are very long lines in the input ASL source code file. 55Implemented buffer management that automatically increases the size of 56the buffers as necessary. 57 58iASL: Added an option (-vx) to "expect" particular remarks, warnings and 59errors. If the specified exception is not raised during compilation, the 60compiler emits an error. This is intended to support the ASL test suite, 61but may be useful in other contexts. 62 63iASL: Implemented a new predefined macro, __METHOD__, which returns a 64string containing the name of the current control method that is being 65compiled. 66 67iASL: Implemented debugger and table compiler support for the SDEI ACPI 68table (Software Delegated Exception Interface). James Morse 69<james.morse@arm.com> 70 71Unix/Linux makefiles: Added an option to disable compile optimizations. 72The disable occurs when the NOOPT flag is set to TRUE. 73theracermaster@gmail.com 74 75Acpidump: Added support for multiple DSDT and FACS tables. This can occur 76when there are different tables for 32-bit versus 64-bit. 77 78Enhanced error reporting for the ASL test suite (ASLTS) by removing 79unnecessary/verbose text, and emit the actual line number where an error 80has occurred. These changes are intended to improve the usefulness of the 81test suite. 82 83---------------------------------------- 8429 June 2017. Summary of changes for version 20170629: 85 86 871) ACPICA kernel-resident subsystem: 88 89Tables: Implemented a deferred ACPI table verification. This is useful 90for operating systems where the tables cannot be verified in the early 91initialization stage due to early memory mapping limitations on some 92architectures. Lv Zheng. 93 94Tables: Removed the signature validation for dynamically loaded tables. 95Provides compatibility with other ACPI implementations. Previously, only 96SSDT tables were allowed, as per the ACPI specification. Now, any table 97signature can be used via the Load() operator. Lv Zheng. 98 99Tables: Fixed several mutex issues that could cause errors during table 100acquisition. Lv Zheng. 101 102Tables: Fixed a problem where an ACPI warning could be generated if a 103null pointer was passed to the AcpiPutTable interface. Lv Zheng. 104 105Tables: Added a mechanism to handle imbalances for the AcpiGetTable and 106AcpiPutTable interfaces. This applies to the "late stage" table loading 107when the use of AcpiPutTable is no longer required (since the system 108memory manager is fully running and available). Lv Zheng. 109 110Fixed/Reverted a regression during processing of resource descriptors 111that contain only a single EndTag. Fixes an AE_AML_NO_RESOURCE_END_TAG 112exception in this case. 113 114Headers: IORT/SMMU support: Updated the SMMU models for Revision C of the 115I/O Remapping specification. Robin Murphy <robin.murphy@arm.com> 116 117Interpreter: Fixed a possible fault if an Alias operator with an invalid 118or duplicate target is encountered during Alias creation in 119AcpiExCreateAlias. Alex James <theracermaster@gmail.com> 120 121Added an option to use designated initializers for function pointers. 122Kees Cook <keescook@google.com> 123 124 1252) iASL Compiler/Disassembler and Tools: 126 127iASL: Allow compilation of External declarations with target pathnames 128that refer to existing named objects within the table. Erik Schmauss. 129 130iASL: Fixed a regression when compiling FieldUnits. Fixes an error if a 131FieldUnit name also is declared via External in the same table. Erik 132Schmauss. 133 134iASL: Allow existing scope names within pathnames used in External 135statements. For example: 136 External (ABCD.EFGH) // ABCD exists, but EFGH is truly external 137 Device (ABCD) 138 139iASL: IORT ACPI table: Implemented changes required to decode the new 140Proximity Domain for the SMMUv3 IORT. Disassembler and Data Table 141compiler. Ganapatrao Kulkarni <ganapatrao.kulkarni@cavium.com> 142 143Disassembler: Don't abort disassembly on errors from External() 144statements. Erik Schmauss. 145 146Disassembler: fixed a possible fault when one of the Create*Field 147operators references a Resource Template. ACPICA Bugzilla 1396. 148 149iASL: In the source code, resolved some naming inconsistences across the 150parsing support. Fixes confusion between "Parse Op" and "Parse Node". 151Adds a new file, aslparseop.c 152 153---------------------------------------- 15431 May 2017. Summary of changes for version 20170531: 155 156 1570) ACPI 6.2 support: 158 159The ACPI specification version 6.2 has been released and is available at 160http://uefi.org/specifications 161 162This version of ACPICA fully supports the ACPI 6.2 specification. Changes 163are summarized below. 164 165New ACPI tables (Table Compiler/Disassembler/Templates): 166 HMAT (Heterogeneous Memory Attributes Table) 167 WSMT (Windows SMM Security Mitigation Table) 168 PPTT (Processor Properties Topology Table) 169 170New subtables for existing ACPI tables: 171 HEST (New subtable, Arch-deferred machine check) 172 SRAT (New subtable, Arch-specific affinity structure) 173 PCCT (New subtables, Extended PCC subspaces (types 3 and 4)) 174 175Simple updates for existing ACPI tables: 176 BGRT (two new flag bits) 177 HEST (New bit defined for several subtables, GHES_ASSIST) 178 179New Resource Descriptors and Resource macros (Compiler/Disassembler): 180 PinConfig() 181 PinFunction() 182 PinGroup() 183 PinGroupConfig() 184 PinGroupFunction() 185 New type for hardware error notification (section 18.3.2.9) 186 187New predefined names/methods (Compiler/Interpreter): 188 _HMA (Heterogeneous Memory Attributes) 189 _LSI (Label Storage Information) 190 _LSR (Label Storage Read) 191 _LSW (Label Storage Write) 192 193ASL grammar/macro changes (Compiler): 194 For() ASL macro, implemented with the AML while operator 195 Extensions to Concatenate operator 196 Support for multiple definition blocks in same ASL file 197 Clarification for Buffer operator 198 Allow executable AML code underneath all scopes (Devices, etc.) 199 Clarification/change for the _OSI return value 200 ASL grammar update for reference operators 201 Allow a zero-length string for AML filename in DefinitionBlock 202 203Miscellaneous: 204 New device object notification value 205 Remove a notify value (0x0C) for graceful shutdown 206 New UUIDs for processor/cache properties and 207 physical package property 208 New _HID, ACPI0014 (Wireless Power Calibration Device) 209 210 2111) ACPICA kernel-resident subsystem: 212 213Added support to disable ACPI events on hardware-reduced platforms. 214Eliminates error messages of the form "Could not enable fixed event". Lv 215Zheng 216 217Fixed a problem using Device/Thermal objects with the ObjectType and 218DerefOf ASL operators. This support had not been fully/properly 219implemented. 220 221Fixed a problem where if a Buffer object containing a resource template 222was longer than the actual resource template, an error was generated -- 223even though the AML is legal. This case has been seen in the field. 224 225Fixed a problem with the header definition of the MADT PCAT_COMPAT flag. 226The values for DUAL_PIC and MULTIPLE_APIC were reversed. 227 228Added header file changes for the TPM2 ACPI table. Update to new version 229of the TCG specification. Adds a new TPM2 subtable for ARM SMC. 230 231Exported the external interfaces AcpiAcquireMutex and AcpiReleaseMutex. 232These interfaces are intended to be used only in conjunction with the 233predefined _DLM method (Device Lock Method). "This object appears in a 234device scope when AML access to the device must be synchronized with the 235OS environment". 236 237Example Code and Data Size: These are the sizes for the OS-independent 238acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 239debug version of the code includes the debug output trace mechanism and 240has a much larger code and data size. 241 242 Current Release: 243 Non-Debug Version: 143.1K Code, 60.0K Data, 203.1K Total 244 Debug Version: 204.0K Code, 84.3K Data, 288.3K Total 245 Previous Release: 246 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total 247 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total 248 249 2502) iASL Compiler/Disassembler and Tools: 251 252iASL: Fixed a problem where an External() declaration could not refer to 253a Field Unit. Erik Schmauss. 254 255Disassembler: Improved support for the Switch/Case operators. This 256feature will disassemble AML code back to the original Switch operators 257when possible, instead of an If..Else sequence. David Box 258 259iASL and disassembler: Improved the handling of multiple extraneous 260parentheses for both ASL input and disassembled ASL output. 261 262Improved the behavior of the iASL compiler and disassembler to detect 263improper use of external declarations 264 265Disassembler: Now aborts immediately upon detection of an unknown AML 266opcode. The AML parser has no real way to recover from this, and can 267result in the creation of an ill-formed parse tree that causes errors 268later during the disassembly. 269 270All tools: Fixed a problem where the Unix application OSL did not handle 271control-c correctly. For example, a control-c could incorrectly wake the 272debugger. 273 274AcpiExec: Improved the Control-C handling and added a handler for 275segmentation faults (SIGSEGV). Supports both Windows and Unix-like 276environments. 277 278Reduced the verbosity of the generic unix makefiles. Previously, each 279compilation displayed the full set of compiler options. This has been 280eliminated as the options are easily inspected within the makefiles. Each 281compilation now results in a single line of output. 282 283---------------------------------------- 28403 March 2017. Summary of changes for version 20170303: 285 286 2870) ACPICA licensing: 288 289The licensing information at the start of each source code module has 290been updated. In addition to the Intel license, the dual GPLv2/BSD 291license has been added for completeness. Now, a single version of the 292source code should be suitable for all ACPICA customers. This is the 293major change for this release since it affects all source code modules. 294 295 2961) ACPICA kernel-resident subsystem: 297 298Fixed two issues with the common asltypes.h header that could cause 299problems in some environments: (Kim Jung-uk) 300 Removed typedef for YY_BUFFER_STATE ? 301 Fixes an error with earlier versions of Flex. 302 Removed use of FILE typedef (which is only defined in stdio.h) 303 304 3052) iASL Compiler/Disassembler and Tools: 306 307Disassembler: fixed a regression introduced in 20170224. A fix for a 308memory leak related to resource descriptor tags (names) could fault when 309the disassembler was generated with 64-bit compilers. 310 311The ASLTS test suite has been updated to implement a new testing 312architecture. During generation of the suite from ASL source, both the 313ASL and ASL+ compilers are now validated, as well as the disassembler 314itself (Erik Schmauss). The architecture executes as follows: 315 316 For every ASL source module: 317 Compile (legacy ASL compilation) 318 Disassemble the resulting AML to ASL+ source code 319 Compile the new ASL+ module 320 Perform a binary compare on the legacy AML and the new ASL+ AML 321 The ASLTS suite then executes normally using the AML binaries. 322 323---------------------------------------- 32424 February 2017. Summary of changes for version 20170224: 325 326 3271) ACPICA kernel-resident subsystem: 328 329Interpreter: Fixed two issues with the control method return value auto- 330repair feature, where an attempt to double-delete an internal object 331could result in an ACPICA warning (for _CID repair and others). No fault 332occurs, however, because the attempted deletion (actually a release to an 333internal cache) is detected and ignored via object poisoning. 334 335Debugger: Fixed an AML interpreter mutex issue during the single stepping 336of control methods. If certain debugger commands are executed during 337stepping, a mutex aquire/release error could occur. Lv Zheng. 338 339Fixed some issues generating ACPICA with the Intel C compiler by 340restoring the original behavior and compiler-specific include file in 341acenv.h. Lv Zheng. 342 343Example Code and Data Size: These are the sizes for the OS-independent 344acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 345debug version of the code includes the debug output trace mechanism and 346has a much larger code and data size. 347 348 Current Release: 349 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total 350 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total 351 Previous Release: 352 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 353 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 354 355 3562) iASL Compiler/Disassembler and Tools: 357 358iASL/Disassembler: A preliminary version of a new ASL-to-ASL+ conversion 359tool has been designed, implemented, and included in this release. The 360key feature of this utility is that the original comments within the 361input ASL file are preserved during the conversion process, and included 362within the converted ASL+ file -- thus creating a transparent conversion 363of existing ASL files to ASL+ (ASL 2.0). Erik Schmauss. 364 365 Usage: iasl -ca <ASL-filename> // Output is a .dsl file with 366converted code 367 368iASL/Disassembler: Improved the detection and correct disassembly of 369Switch/Case operators. This feature detects sequences of if/elseif/else 370operators that originated from ASL Switch/Case/Default operators and 371emits the original operators. David Box. 372 373iASL: Improved the IORT ACPI table support in the following areas. Lv 374Zheng: 375 Clear MappingOffset if the MappingCount is zero. 376 Fix the disassembly of the SMMU GSU interrupt offset. 377 Update the template file for the IORT table. 378 379Disassembler: Enhanced the detection and disassembly of resource 380template/descriptor within a Buffer object. An EndTag descriptor is now 381required to have a zero second byte, since all known ASL compilers emit 382this. This helps eliminate incorrect decisions when a buffer is 383disassembled (false positives on resource templates). 384 385---------------------------------------- 38619 January 2017. Summary of changes for version 20170119: 387 388 3891) General ACPICA software: 390 391Entire source code base: Added the 2017 copyright to all source code 392legal/licensing module headers and utility/tool signons. This includes 393the standard Linux dual-license header. This affects virtually every file 394in the ACPICA core subsystem, iASL compiler, all ACPICA utilities, and 395the ACPICA test suite. 396 397 3982) iASL Compiler/Disassembler and Tools: 399 400iASL: Removed/fixed an inadvertent remark when a method argument 401containing a reference is used as a target operand within the method (and 402never used as a simple argument), as in the example below. Jeffrey Hugo. 403 404 dsdt.asl 1507: Store(0x1, Arg0) 405 Remark 2146 - ^ Method Argument is never used (Arg0) 406 407All tools: Removed the bit width of the compiler that generated the tool 408from the common signon for all user space tools. This proved to be 409confusing and unnecessary. This includes similar removal of HARDWARE_NAME 410from the generic makefiles (Thomas Petazzoni). Example below. 411 412 Old: 413 ASL+ Optimizing Compiler version 20170119-32 414 ASL+ Optimizing Compiler version 20170119-64 415 416 New: 417 ASL+ Optimizing Compiler version 20170119 418 419---------------------------------------- 42022 December 2016. Summary of changes for version 20161222: 421 422 4231) ACPICA kernel-resident subsystem: 424 425AML Debugger: Implemented a new mechanism to simplify and enhance 426debugger integration into all environments, including kernel debuggers 427and user-space utilities, as well as remote debug services. This 428mechanism essentially consists of new OSL interfaces to support debugger 429initialization/termination, as well as wait/notify interfaces to perform 430the debugger handshake with the host. Lv Zheng. 431 432 New OSL interfaces: 433 AcpiOsInitializeDebugger (void) 434 AcpiOsTerminateDebugger (void) 435 AcpiOsWaitCommandReady (void) 436 AcpiOsNotifyCommandComplete (void) 437 438 New OS services layer: 439 osgendbg.c -- Example implementation, and used for AcpiExec 440 441Update for Generic Address Space (GAS) support: Although the AccessWidth 442and/or BitOffset fields of the GAS are not often used, this change now 443fully supports these fields. This affects the internal support for FADT 444registers, registers in other ACPI data tables, and the AcpiRead and 445AcpiWrite public interfaces. Lv Zheng. 446 447Sleep support: In order to simplify integration of ACPI sleep for the 448various host operating systems, a new OSL interface has been introduced. 449AcpiOsEnterSleep allows the host to perform any required operations 450before the final write to the sleep control register(s) is performed by 451ACPICA. Lv Zheng. 452 453 New OSL interface: 454 AcpiOsEnterSleep(SleepState, RegisterAValue, RegisterBValue) 455 456 Called from these internal interfaces: 457 AcpiHwLegacySleep 458 AcpiHwExtendedSleep 459 460EFI support: Added a very small EFI/ACPICA example application. Provides 461a simple demo for EFI integration, as well as assisting with resolution 462of issues related to customer ACPICA/EFI integration. Lv Zheng. See: 463 464 source/tools/efihello/efihello.c 465 466Local C library: Implemented several new functions to enhance ACPICA 467portability, for environments where these clib functions are not 468available (such as EFI). Lv Zheng: 469 putchar 470 getchar 471 strpbrk 472 strtok 473 memmove 474 475Fixed a regression where occasionally a valid resource descriptor was 476incorrectly detected as invalid at runtime, and a 477AE_AML_NO_RESOURCE_END_TAG was returned. 478 479Fixed a problem with the recently implemented support that enables 480control method invocations as Target operands to many ASL operators. 481Warnings of this form: "Needed type [Reference], found [Processor]" were 482seen at runtime for some method invocations. 483 484Example Code and Data Size: These are the sizes for the OS-independent 485acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 486debug version of the code includes the debug output trace mechanism and 487has a much larger code and data size. 488 489 Current Release: 490 Non-Debug Version: 141.5K Code, 58.5K Data, 200.0K Total 491 Debug Version: 201.7K Code, 82.7K Data, 284.4K Total 492 Previous Release: 493 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total 494 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total 495 496 4972) iASL Compiler/Disassembler and Tools: 498 499Disassembler: Enhanced output by adding the capability to detect and 500disassemble ASL Switch/Case statements back to the original ASL source 501code instead of if/else blocks. David Box. 502 503AcpiHelp: Split a large file into separate files based upon 504functionality/purpose. New files are: 505 ahaml.c 506 ahasl.c 507 508---------------------------------------- 50917 November 2016. Summary of changes for version 20161117: 510 511 5121) ACPICA kernel-resident subsystem: 513 514Table Manager: Fixed a regression introduced in 20160729, "FADT support 515cleanup". This was an attempt to remove all references in the source to 516the FADT version 2, which never was a legal version number. It was 517skipped because it was an early version of 64-bit support that was 518eventually abandoned for the current 64-bit support. 519 520Interpreter: Fixed a problem where runtime implicit conversion was 521incorrectly disabled for the ASL operators below. This brings the 522behavior into compliance with the ACPI specification: 523 FromBCD 524 ToBCD 525 ToDecimalString 526 ToHexString 527 ToInteger 528 ToBuffer 529 530Table Manager: Added a new public interface, AcpiPutTable, used to 531release and free an ACPI table returned by AcpiGetTable and related 532interfaces. Lv Zheng. 533 534Example Code and Data Size: These are the sizes for the OS-independent 535acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 536debug version of the code includes the debug output trace mechanism and 537has a much larger code and data size. 538 539 Current Release: 540 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total 541 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total 542 Previous Release: 543 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total 544 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total 545 546 5472) iASL Compiler/Disassembler and Tools: 548 549Disassembler: Fixed a regression for disassembly of Resource Template. 550Detection of templates in the AML stream missed some types of templates. 551 552iASL: Fixed a problem where an Access Size error was returned for the PCC 553address space when the AccessSize of the GAS register is greater than a 554DWORD. Hoan Tran. 555 556iASL: Implemented several grammar changes for the operators below. These 557changes are slated for the next version of the ACPI specification: 558 RefOf - Disallow method invocation as an operand 559 CondRefOf - Disallow method invocation as an operand 560 DerefOf - Disallow operands that use the result from operators 561that 562 do not return a reference (Changed TermArg to 563SuperName). 564 565iASL: Control method invocations are now allowed for Target operands, as 566per the ACPI specification. Removed error for using a control method 567invocation as a Target operand. 568 569Disassembler: Improved detection of Resource Templates, Unicode, and 570Strings within Buffer objects. These subtypes do not contain a specific 571opcode to indicate the originating ASL code, and they must be detected by 572other means within the disassembler. 573 574iASL: Implemented an optimization improvement for 32-bit ACPI tables 575(DSDT/SSDT). For the 32-bit case only, compute the optimum integer opcode 576only after 64-bit to 32-bit truncation. A truncation warning message is 577still emitted, however. 578 579AcpiXtract: Implemented handling for both types of line terminators (LF 580or CR/LF) so that it can accept AcpiDump output files from any system. 581Peter Wu. 582 583AcpiBin: Added two new options for comparing AML files: 584 -a: compare and display ALL mismatches 585 -o: start compare at this offset into the second file 586 587---------------------------------------- 58830 September 2016. Summary of changes for version 20160930: 589 590 5911) ACPICA kernel-resident subsystem: 592 593Fixed a regression in the internal AcpiTbFindTable function where a non 594AE_OK exception could inadvertently be returned even if the function did 595not fail. This problem affects the following operators: 596 DataTableRegion 597 LoadTable 598 599Fixed a regression in the LoadTable operator where a load to any 600namespace location other than the root no longer worked properly. 601 602Increased the maximum loop count value that will result in the 603AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to 604prevent infinite loops within the AML interpreter and thus the host OS 605kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to 6061,048,575). 607 608Moved the AcpiGbl_MaxLoopIterations configuration variable to the public 609acpixf.h file. This allows hosts to easily configure the maximum loop 610count at runtime. 611 612Removed an illegal character in the strtoul64.c file. This character 613caused errors with some C compilers. 614 615Example Code and Data Size: These are the sizes for the OS-independent 616acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 617debug version of the code includes the debug output trace mechanism and 618has a much larger code and data size. 619 620 Current Release: 621 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total 622 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total 623 Previous Release: 624 Non-Debug Version: 140.0K Code, 58.1K Data, 198.1K Total 625 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total 626 627 6282) iASL Compiler/Disassembler and Tools: 629 630Disassembler: Fixed a problem with the conversion of Else{If{ blocks into 631the simpler ASL ElseIf keyword. During the conversion, a trailing If 632block could be lost and missing from the disassembled output. 633 634iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+, 635the missing rule caused a parse error when using the Index operator as an 636operand to ObjectType. This construct now compiles properly. Example: 637 ObjectType(PKG1[4]). 638 639iASL: Correctly handle unresolved symbols in the hardware map file (-lm 640option). Previously, unresolved symbols could cause a protection fault. 641Such symbols are now marked as unresolved in the map file. 642 643iASL: Implemented support to allow control method invocations as an 644operand to the ASL DeRefOf operator. Example: 645 DeRefOf(MTH1(Local0)) 646 647Disassembler: Improved support for the ToPLD ASL macro. Detection of a 648possible _PLD buffer now includes examination of both the normal buffer 649length (16 or 20) as well as the surrounding AML package length. 650 651Disassembler: Fixed a problem with the decoding of complex expressions 652within the Divide operator for ASL+. For the case where both the quotient 653and remainder targets are specified, the entire statement cannot be 654disassembled. Previously, the output incorrectly contained a mix of ASL- 655and ASL+ operators. This mixed statement causes a syntax error when 656compiled. Example: 657 Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly 658disassembled to: 659 Divide (INT1 + 6, 128, RSLT, QUOT) 660 661iASL/Tools: Added support to process AML and non-AML ACPI tables 662consistently. For the disassembler and AcpiExec, allow all types of ACPI 663tables (AML and data tables). For the iASL -e option, allow only AML 664tables (DSDT/SSDT). 665 666---------------------------------------- 66731 August 2016. Summary of changes for version 20160831: 668 669 6701) ACPICA kernel-resident subsystem: 671 672Improve support for the so-called "module-level code", which is defined 673to be math, logical and control AML opcodes that appear outside of any 674control method. This change improves the support by adding more opcodes 675that can be executed in the manner. Some other issues have been solved, 676and the ASL grammar changes to support such code under all scope 677operators (Device, etc.) are complete. Lv Zheng. 678 679UEFI support: these OSL functions have been implemented. This is an 680additional step toward supporting the AcpiExec utility natively (with 681full hardware access) under UEFI. Marcelo Ferreira. 682 AcpiOsReadPciConfiguration 683 AcpiOsWritePciConfiguration 684 685Fixed a possible mutex error during control method auto-serialization. Lv 686Zheng. 687 688Updated support for the Generic Address Structure by fully implementing 689all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv 690Zheng. 691 692Updated the return value for the internal _OSI method. Instead of 6930xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF 694for 64-bit ACPI tables. This fixes an incompatibility with other ACPI 695implementations, and will be reflected and clarified in the next version 696of the ACPI specification. 697 698Implemented two new table events that can be passed to an ACPICA table 699handler. These events are used to indicate a table installation or 700uninstallation. These events are used in addition to existed table load 701and unload events. Lv Zheng. 702 703Implemented a cleanup for all internal string-to-integer conversions. 704Consolidate multiple versions of this functionality and limit possible 705bases to either 10 or 16 to simplify the code. Adds a new file, 706utstrtoul64. 707 708Cleanup the inclusion order of the various compiler-specific headers. 709This simplifies build configuration management. The compiler-specific 710headers are now split out from the host-specific headers. Lv Zheng. 711 712Example Code and Data Size: These are the sizes for the OS-independent 713acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 714debug version of the code includes the debug output trace mechanism and 715has a much larger code and data size. 716 717 Current Release: 718 Non-Debug Version: 140.1K Code, 58.1K Data, 198.1K Total 719 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total 720 721 7222) iASL Compiler/Disassembler and Tools: 723 724iASL/AcpiExec: Added a command line option to display the build date/time 725of the tool (-vd). This can be useful to verify that the correct version 726of the tools are being used. 727 728AML Debugger: Implemented a new subcommand ("execute predef") to execute 729all predefined control methods and names within the current namespace. 730This can be useful for debugging problems with ACPI tables and the ACPI 731namespace. 732 733---------------------------------------- 73429 July 2016. Summary of changes for version 20160729: 735 736 7371) ACPICA kernel-resident subsystem: 738 739Implemented basic UEFI support for the various ACPICA tools. This 740includes: 7411) An OSL to implement the various AcpiOs* interfaces on UEFI. 7422) Support to obtain the ACPI tables on UEFI. 7433) Local implementation of required C library functions not available on 744UEFI. 7454) A front-end (main) function for the tools for UEFI-related 746initialization. 747 748The initial deployment of this support is the AcpiDump utility executing 749as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit"). 750Current environments supported are Linux/Unix. MSVC generation is not 751supported at this time. See the generate/efi/README file for build 752instructions. Lv Zheng. 753 754Future plans include porting the AcpiExec utility to execute natively on 755the platform with I/O and memory access. This will allow viewing/dump of 756the platform namespace and native execution of ACPI control methods that 757access the actual hardware. To fully implement this support, the OSL 758functions below must be implemented with UEFI interfaces. Any community 759help in the implementation of these functions would be appreciated: 760 AcpiOsReadPort 761 AcpiOsWritePort 762 AcpiOsReadMemory 763 AcpiOsWriteMemory 764 AcpiOsReadPciConfiguration 765 AcpiOsWritePciConfiguration 766 767Restructured and standardized the C library configuration for ACPICA, 768resulting in the various configuration options below. This includes a 769global restructuring of the compiler-dependent and platform-dependent 770include files. These changes may affect the existing platform-dependent 771configuration files on some hosts. Lv Zheng. 772 773The current C library configuration options appear below. For any issues, 774it may be helpful to examine the existing compiler-dependent and 775platform-dependent files as examples. Lv Zheng. 776 7771) Linux kernel: 778 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C 779library. 780 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library. 7812) Unix/Windows/BSD applications: 782 ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C 783library. 784 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library. 7853) UEFI applications: 786 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C 787library. 788 ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library. 7894) UEFI applications (EDK2/StdLib): 790 ACPI_USE_STANDARD_HEADERS=y in order to use EDK2 StdLib C library. 791 ACPI_USE_SYSTEM_CLIBRARY=y in order to use EDK2 StdLib C library. 792 793 794AML interpreter: "module-level code" support. Allows for execution of so- 795called "executable" AML code (math/logical operations, etc.) outside of 796control methods not just at the module level (top level) but also within 797any scope declared outside of a control method - Scope{}, Device{}, 798Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng. 799 800Simplified the configuration of the "maximum AML loops" global option by 801adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be 802modified at runtime. 803 804 805Example Code and Data Size: These are the sizes for the OS-independent 806acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 807debug version of the code includes the debug output trace mechanism and 808has a much larger code and data size. 809 810 Current Release: 811 Non-Debug Version: 139.1K Code, 22.9K Data, 162.0K Total 812 Debug Version: 199.0K Code, 81.8K Data, 280.8K Total 813 814 8152) iASL Compiler/Disassembler and Tools: 816 817iASL: Add full support for the RASF ACPI table (RAS Features Table). 818Includes disassembler, data table compiler, and header support. 819 820iASL Expand "module-level code" support. Allows for 821compilation/disassembly of so-called "executable" AML code (math/logical 822operations, etc.) outside of control methods not just at the module level 823(top level) but also within any scope declared outside of a control 824method - Scope{}, Device{}, Processor{}, PowerResource{}, and 825ThermalZone{}. 826 827AcpiDump: Added support for dumping all SSDTs on newer versions of 828Windows. These tables are now easily available -- SSDTs are not available 829through the registry on older versions. 830 831---------------------------------------- 83227 May 2016. Summary of changes for version 20160527: 833 834 8351) ACPICA kernel-resident subsystem: 836 837Temporarily reverted the new arbitrary bit length/alignment support in 838AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been 839a number of regressions with the new code that need to be fully resolved 840and tested before this support can be finally integrated into ACPICA. 841Apologies for any inconveniences these issues may have caused. 842 843The ACPI message macros are not configurable (ACPI_MSG_ERROR, 844ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR, 845and ACPI_MSG_BIOS_WARNING). Lv Zheng. 846 847Fixed a couple of GCC warnings associated with the use of the -Wcast-qual 848option. Adds a new return macro, return_STR. Junk-uk Kim. 849 850Example Code and Data Size: These are the sizes for the OS-independent 851acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 852debug version of the code includes the debug output trace mechanism and 853has a much larger code and data size. 854 855 Current Release: 856 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total 857 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 858 Previous Release: 859 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 860 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total 861 862---------------------------------------- 86322 April 2016. Summary of changes for version 20160422: 864 8651) ACPICA kernel-resident subsystem: 866 867Fixed a regression in the GAS (generic address structure) arbitrary bit 868support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior 869and incorrect return values. Lv Zheng. ACPICA BZ 1270. 870 871ACPI 6.0: Added support for new/renamed resource macros. One new argument 872was added to each of these macros, and the original name has been 873deprecated. The AML disassembler will always disassemble to the new 874names. Support for the new macros was added to iASL, disassembler, 875resource manager, and the acpihelp utility. ACPICA BZ 1274. 876 877 I2cSerialBus -> I2cSerialBusV2 878 SpiSerialBus -> SpiSerialBusV2 879 UartSerialBus -> UartSerialBusV2 880 881ACPI 6.0: Added support for a new integer field that was appended to the 882package object returned by the _BIX method. This adds iASL compile-time 883and AML runtime error checking. ACPICA BZ 1273. 884 885ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm 886Subspace Type2" (Headers, Disassembler, and data table compiler). 887 888Example Code and Data Size: These are the sizes for the OS-independent 889acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 890debug version of the code includes the debug output trace mechanism and 891has a much larger code and data size. 892 893 Current Release: 894 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 895 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 896 Previous Release: 897 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total 898 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total 899 900 9012) iASL Compiler/Disassembler and Tools: 902 903iASL: Implemented an ASL grammar extension to allow/enable executable 904"module-level code" to be created and executed under the various 905operators that create new scopes. This type of AML code is already 906supported in all known AML interpreters, and the grammar change will 907appear in the next version of the ACPI specification. Simplifies the 908conditional runtime creation of named objects under these object types: 909 910 Device 911 PowerResource 912 Processor 913 Scope 914 ThermalZone 915 916iASL: Implemented a new ASL extension, a "For" loop macro to add greater 917ease-of-use to the ASL language. The syntax is similar to the 918corresponding C operator, and is implemented with the existing AML While 919opcode -- thus requiring no changes to existing AML interpreters. 920 921 For (Initialize, Predicate, Update) {TermList} 922 923Grammar: 924 ForTerm := 925 For ( 926 Initializer // Nothing | TermArg => ComputationalData 927 Predicate // Nothing | TermArg => ComputationalData 928 Update // Nothing | TermArg => ComputationalData 929 ) {TermList} 930 931 932iASL: The _HID/_ADR detection and validation has been enhanced to search 933under conditionals in order to allow these objects to be conditionally 934created at runtime. 935 936iASL: Fixed several issues with the constant folding feature. The 937improvement allows better detection and resolution of statements that can 938be folded at compile time. ACPICA BZ 1266. 939 940iASL/Disassembler: Fixed a couple issues with the Else{If{}...} 941conversion to the ASL ElseIf operator where incorrect ASL code could be 942generated. 943 944iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where 945sometimes an extra (and extraneous) set of parentheses were emitted for 946some combinations of operators. Although this did not cause any problems 947with recompilation of the disassembled code, it made the code more 948difficult to read. David Box. ACPICA BZ 1231. 949 950iASL: Changed to ignore the unreferenced detection for predefined names 951of resource descriptor elements, when the resource descriptor is 952created/defined within a control method. 953 954iASL: Disassembler: Fix a possible fault with externally declared Buffer 955objects. 956 957---------------------------------------- 95818 March 2016. Summary of changes for version 20160318: 959 9601) ACPICA kernel-resident subsystem: 961 962Added support for arbitrary bit lengths and bit offsets for registers 963defined by the Generic Address Structure. Previously, only aligned bit 964lengths of 8/16/32/64 were supported. This was sufficient for many years, 965but recently some machines have been seen that require arbitrary bit- 966level support. ACPICA BZ 1240. Lv Zheng. 967 968Fixed an issue where the \_SB._INI method sometimes must be evaluated 969before any _REG methods are evaluated. Lv Zheng. 970 971Implemented several changes related to ACPI table support 972(Headers/Disassembler/TableCompiler): 973NFIT: For ACPI 6.1, updated to add some additional new fields and 974constants. 975FADT: Updated a warning message and set compliance to ACPI 6.1 (Version 9766). 977DMAR: Added new constants per the 10/2014 DMAR spec. 978IORT: Added new subtable per the 10/2015 IORT spec. 979HEST: For ACPI 6.1, added new constants and new subtable. 980DBG2: Added new constants per the 12/2015 DBG2 spec. 981FPDT: Fixed several incorrect fields, add the FPDT boot record structure. 982ACPICA BZ 1249. 983ERST/EINJ: Updated disassembler with new "Execute Timings" actions. 984 985Updated header support for the DMAR table to match the current version of 986the related spec. 987 988Added extensions to the ASL Concatenate operator to allow any ACPI object 989to be passed as an operand. Any object other than Integer/String/Buffer 990simply returns a string containing the object type. This extends the 991usefulness of the Printf macros. Previously, Concatenate would abort the 992control method if a non-data object was encountered. 993 994ACPICA source code: Deployed the C "const" keyword across the source code 995where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD). 996 997Example Code and Data Size: These are the sizes for the OS-independent 998acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 999debug version of the code includes the debug output trace mechanism and 1000has a much larger code and data size. 1001 1002 Current Release: 1003 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total 1004 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total 1005 Previous Release: 1006 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total 1007 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total 1008 1009 10102) iASL Compiler/Disassembler and Tools: 1011 1012iASL/Disassembler: Improved the heuristic used to determine the number of 1013arguments for an externally defined control method (a method in another 1014table). Although this is an improvement, there is no deterministic way to 1015"guess" the number of method arguments. Only the ACPI 6.0 External opcode 1016will completely solve this problem as it is deployed (automatically) in 1017newer BIOS code. 1018 1019iASL/Disassembler: Fixed an ordering issue for emitted External() ASL 1020statements that could cause errors when the disassembled file is 1021compiled. ACPICA BZ 1243. David Box. 1022 1023iASL: Fixed a regression caused by the merger of the two versions of the 1024local strtoul64. Because of a dependency on a global variable, strtoul64 1025could return an error for integers greater than a 32-bit value. ACPICA BZ 10261260. 1027 1028iASL: Fixed a regression where a fault could occur for an ASL Return 1029statement if it invokes a control method that is not resolved. ACPICA BZ 10301264. 1031 1032AcpiXtract: Improved input file validation: detection of binary files and 1033non-acpidump text files. 1034 1035---------------------------------------- 103612 February 2016. Summary of changes for version 20160212: 1037 10381) ACPICA kernel-resident subsystem: 1039 1040Implemented full support for the ACPI 6.1 specification (released in 1041January). This version of the specification is available at: 1042http://www.uefi.org/specifications 1043 1044Only a relatively small number of changes were required in ACPICA to 1045support ACPI 6.1, in these areas: 1046- New predefined names 1047- New _HID values 1048- A new subtable for HEST 1049- A few other header changes for new values 1050 1051Ensure \_SB_._INI is executed before any _REG methods are executed. There 1052appears to be existing BIOS code that relies on this behavior. Lv Zheng. 1053 1054Reverted a change made in version 20151218 which enabled method 1055invocations to be targets of various ASL operators (SuperName and Target 1056grammar elements). While the new behavior is supported by the ACPI 1057specification, other AML interpreters do not support this behavior and 1058never will. The ACPI specification will be updated for ACPI 6.2 to remove 1059this support. Therefore, the change was reverted to the original ACPICA 1060behavior. 1061 1062ACPICA now supports the GCC 6 compiler. 1063 1064Current Release: (Note: build changes increased sizes) 1065 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total 1066 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total 1067Previous Release: 1068 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total 1069 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total 1070 1071 10722) iASL Compiler/Disassembler and Tools: 1073 1074Completed full support for the ACPI 6.0 External() AML opcode. The 1075compiler emits an external AML opcode for each ASL External statement. 1076This opcode is used by the disassembler to assist with the disassembly of 1077external control methods by specifying the required number of arguments 1078for the method. AML interpreters do not use this opcode. To ensure that 1079interpreters do not even see the opcode, a block of one or more external 1080opcodes is surrounded by an "If(0)" construct. As this feature becomes 1081commonly deployed in BIOS code, the ability of disassemblers to correctly 1082disassemble AML code will be greatly improved. David Box. 1083 1084iASL: Implemented support for an optional cross-reference output file. 1085The -lx option will create a the cross-reference file with the suffix 1086"xrf". Three different types of cross-reference are created in this file: 1087- List of object references made from within each control method 1088- Invocation (caller) list for each user-defined control method 1089- List of references to each non-method object in the namespace 1090 1091iASL: Method invocations as ASL Target operands are now disallowed and 1092flagged as errors in preparation for ACPI 6.2 (see the description of the 1093problem above). 1094 1095---------------------------------------- 10968 January 2016. Summary of changes for version 20160108: 1097 10981) ACPICA kernel-resident subsystem: 1099 1100Updated all ACPICA copyrights and signons to 2016: Added the 2016 1101copyright to all source code module headers and utility/tool signons. 1102This includes the standard Linux dual-license header. This affects 1103virtually every file in the ACPICA core subsystem, iASL compiler, all 1104ACPICA utilities, and the ACPICA test suite. 1105 1106Fixed a regression introduced in version 20151218 concerning the 1107execution of so-called module-level ASL/AML code. Namespace objects 1108created under a module-level If() construct were not properly/fully 1109entered into the namespace and could cause an interpreter fault when 1110accessed. 1111 1112Example Code and Data Size: These are the sizes for the OS-independent 1113acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1114debug version of the code includes the debug output trace mechanism and 1115has a much larger code and data size. 1116 1117Current Release: 1118 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total 1119 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total 1120 Previous Release: 1121 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total 1122 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total 1123 1124 11252) iASL Compiler/Disassembler and Tools: 1126 1127Fixed a problem with the compilation of the GpioIo and GpioInt resource 1128descriptors. The _PIN field name was incorrectly defined to be an array 1129of 32-bit values, but the _PIN values are in fact 16 bits each. This 1130would cause incorrect bit width warnings when using Word (16-bit) fields 1131to access the descriptors. 1132 1133 1134---------------------------------------- 113518 December 2015. Summary of changes for version 20151218: 1136 11371) ACPICA kernel-resident subsystem: 1138 1139Implemented per-AML-table execution of "module-level code" as individual 1140ACPI tables are loaded into the namespace during ACPICA initialization. 1141In other words, any module-level code within an AML table is executed 1142immediately after the table is loaded, instead of batched and executed 1143after all of the tables have been loaded. This provides compatibility 1144with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng, 1145David Box. 1146 1147To fully support the feature above, the default operation region handlers 1148for the SystemMemory, SystemIO, and PCI_Config address spaces are now 1149installed before any ACPI tables are loaded. This enables module-level 1150code to access these address spaces during the table load and module- 1151level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David 1152Box. 1153 1154Implemented several changes to the internal _REG support in conjunction 1155with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples 1156utilities for the changes above. Although these tools were changed, host 1157operating systems that simply use the default handlers for SystemMemory, 1158SystemIO, and PCI_Config spaces should not require any update. Lv Zheng. 1159 1160For example, in the code below, DEV1 is conditionally added to the 1161namespace by the DSDT via module-level code that accesses an operation 1162region. The SSDT references DEV1 via the Scope operator. DEV1 must be 1163created immediately after the DSDT is loaded in order for the SSDT to 1164successfully reference DEV1. Previously, this code would cause an 1165AE_NOT_EXIST exception during the load of the SSDT. Now, this code is 1166fully supported by ACPICA. 1167 1168 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1) 1169 { 1170 OperationRegion (OPR1, SystemMemory, 0x400, 32) 1171 Field (OPR1, AnyAcc, NoLock, Preserve) 1172 { 1173 FLD1, 1 1174 } 1175 If (FLD1) 1176 { 1177 Device (\DEV1) 1178 { 1179 } 1180 } 1181 } 1182 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1) 1183 { 1184 External (\DEV1, DeviceObj) 1185 Scope (\DEV1) 1186 { 1187 } 1188 } 1189 1190Fixed an AML interpreter problem where control method invocations were 1191not handled correctly when the invocation was itself a SuperName argument 1192to another ASL operator. In these cases, the method was not invoked. 1193ACPICA BZ 1002. Affects the following ASL operators that have a SuperName 1194argument: 1195 Store 1196 Acquire, Wait 1197 CondRefOf, RefOf 1198 Decrement, Increment 1199 Load, Unload 1200 Notify 1201 Signal, Release, Reset 1202 SizeOf 1203 1204Implemented automatic String-to-ObjectReference conversion support for 1205packages returned by predefined names (such as _DEP). A common BIOS error 1206is to add double quotes around an ObjectReference namepath, which turns 1207the reference into an unexpected string object. This support detects the 1208problem and corrects it before the package is returned to the caller that 1209invoked the method. Lv Zheng. 1210 1211Implemented extensions to the Concatenate operator. Concatenate now 1212accepts any type of object, it is not restricted to simply 1213Integer/String/Buffer. For objects other than these 3 basic data types, 1214the argument is treated as a string containing the name of the object 1215type. This expands the utility of Concatenate and the Printf/Fprintf 1216macros. ACPICA BZ 1222. 1217 1218Cleaned up the output of the ASL Debug object. The timer() value is now 1219optional and no longer emitted by default. Also, the basic data types of 1220Integer/String/Buffer are simply emitted as their values, without a data 1221type string -- since the data type is obvious from the output. ACPICA BZ 12221221. 1223 1224Example Code and Data Size: These are the sizes for the OS-independent 1225acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1226debug version of the code includes the debug output trace mechanism and 1227has a much larger code and data size. 1228 1229 Current Release: 1230 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total 1231 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total 1232 Previous Release: 1233 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 1234 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 1235 1236 12372) iASL Compiler/Disassembler and Tools: 1238 1239iASL: Fixed some issues with the ASL Include() operator. This operator 1240was incorrectly defined in the iASL parser rules, causing a new scope to 1241be opened for the code within the include file. This could lead to 1242several issues, including allowing ASL code that is technically illegal 1243and not supported by AML interpreters. Note, this does not affect the 1244related #include preprocessor operator. ACPICA BZ 1212. 1245 1246iASL/Disassembler: Implemented support for the ASL ElseIf operator. This 1247operator is essentially an ASL macro since there is no AML opcode 1248associated with it. The code emitted by the iASL compiler for ElseIf is 1249an Else opcode followed immediately by an If opcode. The disassembler 1250will now emit an ElseIf if it finds an Else immediately followed by an 1251If. This simplifies the decoded ASL, especially for deeply nested 1252If..Else and large Switch constructs. Thus, the disassembled code more 1253closely follows the original source ASL. ACPICA BZ 1211. Example: 1254 1255 Old disassembly: 1256 Else 1257 { 1258 If (Arg0 == 0x02) 1259 { 1260 Local0 = 0x05 1261 } 1262 } 1263 1264 New disassembly: 1265 ElseIf (Arg0 == 0x02) 1266 { 1267 Local0 = 0x05 1268 } 1269 1270AcpiExec: Added support for the new module level code behavior and the 1271early region installation. This required a small change to the 1272initialization, since AcpiExec must install its own operation region 1273handlers. 1274 1275AcpiExec: Added support to make the debug object timer optional. Default 1276is timer disabled. This cleans up the debug object output -- the timer 1277data is rarely used. 1278 1279AcpiExec: Multiple ACPI tables are now loaded in the order that they 1280appear on the command line. This can be important when there are 1281interdependencies/references between the tables. 1282 1283iASL/Templates. Add support to generate template files with multiple 1284SSDTs within a single output file. Also added ommand line support to 1285specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ 12861223, 1225. 1287 1288 1289---------------------------------------- 129024 November 2015. Summary of changes for version 20151124: 1291 12921) ACPICA kernel-resident subsystem: 1293 1294Fixed a possible regression for a previous update to FADT handling. The 1295FADT no longer has a fixed table ID, causing some issues with code that 1296was hardwired to a specific ID. Lv Zheng. 1297 1298Fixed a problem where the method auto-serialization could interfere with 1299the current SyncLevel. This change makes the auto-serialization support 1300transparent to the SyncLevel support and management. 1301 1302Removed support for the _SUB predefined name in AcpiGetObjectInfo. This 1303interface is intended for early access to the namespace during the 1304initial namespace device discovery walk. The _SUB method has been seen to 1305access operation regions in some cases, causing errors because the 1306operation regions are not fully initialized. 1307 1308AML Debugger: Fixed some issues with the terminate/quit/exit commands 1309that can cause faults. Lv Zheng. 1310 1311AML Debugger: Add thread ID support so that single-step mode only applies 1312to the AML Debugger thread. This prevents runtime errors within some 1313kernels. Lv Zheng. 1314 1315Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx 1316methods that are invoked by this interface are optional, removed warnings 1317emitted for the case where one or more of these methods do not exist. 1318ACPICA BZ 1208, original change by Prarit Bhargava. 1319 1320Made a major pass through the entire ACPICA source code base to 1321standardize formatting that has diverged a bit over time. There are no 1322functional changes, but this will of course cause quite a few code 1323differences from the previous ACPICA release. 1324 1325Example Code and Data Size: These are the sizes for the OS-independent 1326acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1327debug version of the code includes the debug output trace mechanism and 1328has a much larger code and data size. 1329 1330 Current Release: 1331 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 1332 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 1333 Previous Release: 1334 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 1335 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 1336 1337 13382) iASL Compiler/Disassembler and Tools: 1339 1340iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple 1341definition blocks within a single ASL file and the resulting AML file. 1342Support for this type of file was also added to the various tools that 1343use binary AML files: acpiexec, acpixtract, and the AML disassembler. The 1344example code below shows two definition blocks within the same file: 1345 1346 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template", 13470x12345678) 1348 { 1349 } 1350 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01) 1351 { 1352 } 1353 1354iASL: Enhanced typechecking for the Name() operator. All expressions for 1355the value of the named object must be reduced/folded to a single constant 1356at compile time, as per the ACPI specification (the AML definition of 1357Name()). 1358 1359iASL: Fixed some code indentation issues for the -ic and -ia options (C 1360and assembly headers). Now all emitted code correctly begins in column 1. 1361 1362iASL: Added an error message for an attempt to open a Scope() on an 1363object defined in an SSDT. The DSDT is always loaded into the namespace 1364first, so any attempt to open a Scope on an SSDT object will fail at 1365runtime. 1366 1367 1368---------------------------------------- 136930 September 2015. Summary of changes for version 20150930: 1370 13711) ACPICA kernel-resident subsystem: 1372 1373Debugger: Implemented several changes and bug fixes to assist support for 1374the in-kernel version of the AML debugger. Lv Zheng. 1375- Fix the "predefined" command for in-kernel debugger. 1376- Do not enter debug command loop for the help and version commands. 1377- Disallow "execute" command during execution/single-step of a method. 1378 1379Interpreter: Updated runtime typechecking for all operators that have 1380target operands. The operand is resolved and validated that it is legal. 1381For example, the target cannot be a non-data object such as a Device, 1382Mutex, ThermalZone, etc., as per the ACPI specification. 1383 1384Debugger: Fixed the double-mutex user I/O handshake to work when local 1385deadlock detection is enabled. 1386 1387Debugger: limited display of method locals and arguments (LocalX and 1388ArgX) to only those that have actually been initialized. This prevents 1389lines of extraneous output. 1390 1391Updated the definition of the NFIT table to correct the bit polarity of 1392one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED 1393 1394Example Code and Data Size: These are the sizes for the OS-independent 1395acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1396debug version of the code includes the debug output trace mechanism and 1397has a much larger code and data size. 1398 1399 Current Release: 1400 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 1401 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 1402 Previous Release: 1403 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 1404 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 1405 1406 14072) iASL Compiler/Disassembler and Tools: 1408 1409iASL: Improved the compile-time typechecking for operands of many of the 1410ASL operators: 1411 1412-- Added an option to disable compiler operand/operator typechecking (- 1413ot). 1414 1415-- For the following operators, the TermArg operands are now validated 1416when possible to be Integer data objects: BankField, OperationRegion, 1417DataTableRegion, Buffer, and Package. 1418 1419-- Store (Source, Target): Both the source and target operands are 1420resolved and checked that the operands are both legal. For example, 1421neither operand can be a non-data object such as a Device, Mutex, 1422ThermalZone, etc. Note, as per the ACPI specification, the CopyObject 1423operator can be used to store an object to any type of target object. 1424 1425-- Store (Source, Target): If the source is a Package object, the target 1426must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target 1427is a Package, the source must also be a Package. 1428 1429-- Store (Source, Target): A warning is issued if the source and target 1430resolve to the identical named object. 1431 1432-- Store (Source, <method invocation>): An error is generated for the 1433target method invocation, as this construct is not supported by the AML 1434interpreter. 1435 1436-- For all ASL math and logic operators, the target operand must be a 1437data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This 1438includes the function return value also. 1439 1440-- External declarations are also included in the typechecking where 1441possible. External objects defined using the UnknownObj keyword cannot be 1442typechecked, however. 1443 1444iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index 1445operator: 1446- Legacy code: Index(PKG1, 3) 1447- New ASL+ code: PKG1[3] 1448This completes the ACPI 6.0 ASL+ support as it was the only operator not 1449supported. 1450 1451iASL: Fixed the file suffix for the preprocessor output file (.i). Two 1452spaces were inadvertently appended to the filename, causing file access 1453and deletion problems on some systems. 1454 1455ASL Test Suite (ASLTS): Updated the master makefile to generate all 1456possible compiler output files when building the test suite -- thus 1457exercising these features of the compiler. These files are automatically 1458deleted when the test suite exits. 1459 1460 1461---------------------------------------- 146218 August 2015. Summary of changes for version 20150818: 1463 14641) ACPICA kernel-resident subsystem: 1465 1466Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv 1467Zheng. ACPICA BZ 1186. 1468 1469Completed development to ensure that the ACPICA Disassembler and Debugger 1470are fully standalone components of ACPICA. Removed cross-component 1471dependences. Lv Zheng. 1472 1473The max-number-of-AML-loops is now runtime configurable (previously was 1474compile-time only). This is essentially a loop timeout to force-abort 1475infinite AML loops. ACPCIA BZ 1192. 1476 1477Debugger: Cleanup output to dump ACPI names and namepaths without any 1478trailing underscores. Lv Zheng. ACPICA BZ 1135. 1479 1480Removed unnecessary conditional compilations across the Debugger and 1481Disassembler components where entire modules could be left uncompiled. 1482 1483The aapits test is deprecated and has been removed from the ACPICA git 1484tree. The test has never been completed and has not been maintained, thus 1485becoming rather useless. ACPICA BZ 1015, 794. 1486 1487A batch of small changes to close bugzilla and other reports: 1488- Remove duplicate code for _PLD processing. ACPICA BZ 1176. 1489- Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185. 1490- iASL: Support POSIX yacc again in makefile. Jung-uk Kim. 1491- ACPI table support: general cleanup and simplification. Lv Zheng, Bob 1492Moore. 1493- ACPI table support: fix for a buffer read overrun in AcpiTbFindTable. 1494ACPICA BZ 1184. 1495- Enhance parameter validation for DataTableRegion and LoadTable ASL/AML 1496operators. 1497- Debugger: Split debugger initialization/termination interfaces. Lv 1498Zheng. 1499- AcpiExec: Emit OemTableId for SSDTs during the load phase for table 1500identification. 1501- AcpiExec: Add debug message during _REG method phase during table 1502load/init. 1503- AcpiNames: Fix a regression where some output was missing and no longer 1504emitted. 1505- Debugger: General cleanup and simplification. Lv Zheng. 1506- Disassembler: Cleanup use of several global option variables. Lv Zheng. 1507 1508Example Code and Data Size: These are the sizes for the OS-independent 1509acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1510debug version of the code includes the debug output trace mechanism and 1511has a much larger code and data size. 1512 1513 Current Release: 1514 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 1515 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 1516 Previous Release: 1517 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 1518 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 1519 1520 15212) iASL Compiler/Disassembler and Tools: 1522 1523AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT 1524were not handled properly and caused load errors. Now, properly invoke 1525and use the ACPICA auto-reallocate mechanism for ACPI table data 1526structures. ACPICA BZ 1188 1527 1528AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA 1529BZ 1190. 1530 1531AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For 1532AcpiExec, this means that no control methods (like _REG/_INI/_STA) are 1533executed during initialization. ACPICA BZ 1187, 1189. 1534 1535iASL/Disassembler: Implemented a prototype "listing" mode that emits AML 1536that corresponds to each disassembled ASL statement, to simplify 1537debugging. ACPICA BZ 1191. 1538 1539Debugger: Add option to the "objects" command to display a summary of the 1540current namespace objects (Object type and count). This is displayed if 1541the command is entered with no arguments. 1542 1543AcpiNames: Add -x option to specify debug level, similar to AcpiExec. 1544 1545 1546---------------------------------------- 154717 July 2015. Summary of changes for version 20150717: 1548 15491) ACPICA kernel-resident subsystem: 1550 1551Improved the partitioning between the Debugger and Disassembler 1552components. This allows the Debugger to be used standalone within kernel 1553code without the Disassembler (which is used for single stepping also). 1554This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng. 1555 1556Debugger: Implemented a new command to trace the execution of control 1557methods (Trace). This is especially useful for the in-kernel version of 1558the debugger when file I/O may not be available for method trace output. 1559See the ACPICA reference for more information. Lv Zheng. 1560 1561Moved all C library prototypes (used for the local versions of these 1562functions when requested) to a new header, acclib.h 1563Cleaned up the use of non-ANSI C library functions. These functions are 1564implemented locally in ACPICA. Moved all such functions to a common 1565source file, utnonansi.c 1566 1567Debugger: Fixed a problem with the "!!" command (get last command 1568executed) where the debugger could enter an infinite loop and eventually 1569crash. 1570 1571Removed the use of local macros that were used for some of the standard C 1572library functions to automatically cast input parameters. This mostly 1573affected the is* functions where the input parameter is defined to be an 1574int. This required a few modifications to the main ACPICA source code to 1575provide casting for these functions and eliminate possible compiler 1576warnings for these parameters. 1577 1578Across the source code, added additional status/error checking to resolve 1579issues discovered by static source code analysis tools such as Coverity. 1580 1581Example Code and Data Size: These are the sizes for the OS-independent 1582acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1583debug version of the code includes the debug output trace mechanism and 1584has a much larger code and data size. 1585 1586 Current Release: 1587 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 1588 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 1589 Previous Release: 1590 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 1591 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 1592 1593 15942) iASL Compiler/Disassembler and Tools: 1595 1596iASL: Fixed a regression where the device map file feature no longer 1597worked properly when used in conjunction with the disassembler. It only 1598worked properly with the compiler itself. 1599 1600iASL: Implemented a new warning for method LocalX variables that are set 1601but never used (similar to a C compiler such as gcc). This also applies 1602to ArgX variables that are not defined by the parent method, and are 1603instead (legally) used as local variables. 1604 1605iASL/Preprocessor: Finished the pass-through of line numbers from the 1606preprocessor to the compiler. This ensures that compiler errors/warnings 1607have the correct original line numbers and filenames, regardless of any 1608#include files. 1609 1610iASL/Preprocessor: Fixed a couple of issues with comment handling and the 1611pass-through of comments to the preprocessor output file (which becomes 1612the compiler input file). Also fixed a problem with // comments that 1613appear after a math expression. 1614 1615iASL: Added support for the TCPA server table to the table compiler and 1616template generator. (The client table was already previously supported) 1617 1618iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to 1619identify the iASL compiler. 1620 1621Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined 1622multiple times. The new names are ACPI_SIGN_NEGATIVE and 1623ACPI_SIGN_POSITIVE. 1624 1625AcpiHelp: Update to expand help messages for the iASL preprocessor 1626directives. 1627 1628 1629---------------------------------------- 163019 June 2015. Summary of changes for version 20150619: 1631 1632Two regressions in version 20150616 have been addressed: 1633 1634Fixes some problems/issues with the C library macro removal (ACPI_STRLEN, 1635etc.) This update changes ACPICA to only use the standard headers for 1636functions, or the prototypes for the local versions of the C library 1637functions. Across the source code, this required some additional casts 1638for some Clib invocations for portability. Moved all local prototypes to 1639a new file, acclib.h 1640 1641Fixes several problems with recent changes to the handling of the FACS 1642table that could cause some systems not to boot. 1643 1644 1645---------------------------------------- 164616 June 2015. Summary of changes for version 20150616: 1647 1648 16491) ACPICA kernel-resident subsystem: 1650 1651Across the entire ACPICA source code base, the various macros for the C 1652library functions (such as ACPI_STRLEN, etc.) have been removed and 1653replaced by the standard C library names (strlen, etc.) The original 1654purpose for these macros is no longer applicable. This simplification 1655reduces the number of macros used in the ACPICA source code 1656significantly, improving readability and maintainability. 1657 1658Implemented support for a new ACPI table, the OSDT. This table, the 1659"override" SDT, can be loaded directly by the host OS at boot time. It 1660enables the replacement of existing namespace objects that were installed 1661via the DSDT and/or SSDTs. The primary purpose for this is to replace 1662buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated 1663for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob 1664Moore. 1665 1666Added support for systems with (improperly) two FACS tables -- a "32-bit" 1667table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit 1668X field). This change will support both automatically. There continues to 1669be systems found with this issue. This support requires a change to the 1670AcpiSetFirmwareWakingVector interface. Also, a public global variable has 1671been added to allow the host to select which FACS is desired 1672(AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more 1673details Lv Zheng. 1674 1675Added a new feature to allow for systems that do not contain an FACS. 1676Although this is already supported on hardware-reduced platforms, the 1677feature has been extended for all platforms. The reasoning is that we do 1678not want to abort the entire ACPICA initialization just because the 1679system is seriously buggy and has no FACS. 1680 1681Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were 1682not correctly transcribed from the ACPI specification in ACPICA version 168320150515. 1684 1685Implemented support for the _CLS object in the AcpiGetObjectInfo external 1686interface. 1687 1688Updated the definitions of the TCPA and TPM2 ACPI tables to the more 1689recent TCG ACPI Specification, December 14, 2014. Table disassembler and 1690compiler also updated. Note: The TCPA "server" table is not supported by 1691the disassembler/table-compiler at this time. 1692 1693ACPI 6.0: Added definitions for the new GIC version field in the MADT. 1694 1695Example Code and Data Size: These are the sizes for the OS-independent 1696acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1697debug version of the code includes the debug output trace mechanism and 1698has a much larger code and data size. 1699 1700 Current Release: 1701 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 1702 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 1703 Previous Release: 1704 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 1705 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 1706 1707 17082) iASL Compiler/Disassembler and Tools: 1709 1710Disassembler: Fixed a problem with the new symbolic operator disassembler 1711where incorrect ASL code could be emitted in some cases for the "non- 1712commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and 1713ShiftRight. The actual problem cases seem to be rather unusual in common 1714ASL code, however. David Box. 1715 1716Modified the linux version of acpidump to obtain ACPI tables from not 1717just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv 1718Zheng. 1719 1720iASL: Fixed a problem where the user preprocessor output file (.i) 1721contained extra data that was not expected. The compiler was using this 1722file as a temporary file and passed through #line directives in order to 1723keep compiler error messages in sync with the input file and line number 1724across multiple include files. The (.i) is no longer a temporary file as 1725the compiler uses a new, different file for the original purpose. 1726 1727iASL: Fixed a problem where comments within the original ASL source code 1728file were not passed through to the preprocessor output file, nor any 1729listing files. 1730 1731iASL: Fixed some issues for the handling of the "#include" preprocessor 1732directive and the similar (but not the same) "Include" ASL operator. 1733 1734iASL: Add support for the new OSDT in both the disassembler and compiler. 1735 1736iASL: Fixed a problem with the constant folding support where a Buffer 1737object could be incorrectly generated (incorrectly formed) during a 1738conversion to a Store() operator. 1739 1740AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new 1741description text for the _REV predefined name. _REV now permanently 1742returns 2, as per the ACPI 6.0 specification. 1743 1744Debugger: Enhanced the output of the Debug ASL object for references 1745produced by the Index operator. For Buffers and strings, only output the 1746actual byte pointed to by the index. For packages, only print the single 1747package element decoded by the index. Previously, the entire 1748buffer/string/package was emitted. 1749 1750iASL/Table-compiler: Fixed a regression where the "generic" data types 1751were no longer recognized, causing errors. 1752 1753 1754---------------------------------------- 175515 May 2015. Summary of changes for version 20150515: 1756 1757This release implements most of ACPI 6.0 as described below. 1758 17591) ACPICA kernel-resident subsystem: 1760 1761Implemented runtime argument checking and return value checking for all 1762new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI, 1763_MTL, _PRR, _RDI, _RST, _TFP, _TSN. 1764 1765Example Code and Data Size: These are the sizes for the OS-independent 1766acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1767debug version of the code includes the debug output trace mechanism and 1768has a much larger code and data size. 1769 1770 Current Release: 1771 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 1772 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 1773 Previous Release: 1774 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 1775 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 1776 1777 17782) iASL Compiler/Disassembler and Tools: 1779 1780iASL compiler: Added compile-time support for all new ACPI 6.0 predefined 1781names (argument count validation and return value typechecking.) 1782 1783iASL disassembler and table compiler: implemented support for all new 1784ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV. 1785 1786iASL disassembler and table compiler: Added ACPI 6.0 changes to existing 1787tables: FADT, MADT. 1788 1789iASL preprocessor: Added a new directive to enable inclusion of binary 1790blobs into ASL code. The new directive is #includebuffer. It takes a 1791binary file as input and emits a named ascii buffer object into the ASL 1792code. 1793 1794AcpiHelp: Added support for all new ACPI 6.0 predefined names. 1795 1796AcpiHelp: Added a new option, -d, to display all iASL preprocessor 1797directives. 1798 1799AcpiHelp: Added a new option, -t, to display all known/supported ACPI 1800tables. 1801 1802 1803---------------------------------------- 180410 April 2015. Summary of changes for version 20150410: 1805 1806Reverted a change introduced in version 20150408 that caused 1807a regression in the disassembler where incorrect operator 1808symbols could be emitted. 1809 1810 1811---------------------------------------- 181208 April 2015. Summary of changes for version 20150408: 1813 1814 18151) ACPICA kernel-resident subsystem: 1816 1817Permanently set the return value for the _REV predefined name. It now 1818returns 2 (was 5). This matches other ACPI implementations. _REV will be 1819deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2 1820for ACPI 2.0 and later. It should never be used to differentiate or 1821identify operating systems. 1822 1823Added the "Windows 2015" string to the _OSI support. ACPICA will now 1824return TRUE to a query with this string. 1825 1826Fixed several issues with the local version of the printf function. 1827 1828Added the C99 compiler option (-std=c99) to the Unix makefiles. 1829 1830 Current Release: 1831 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total 1832 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total 1833 Previous Release: 1834 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 1835 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 1836 1837 18382) iASL Compiler/Disassembler and Tools: 1839 1840iASL: Implemented an enhancement to the constant folding feature to 1841transform the parse tree to a simple Store operation whenever possible: 1842 Add (2, 3, X) ==> is converted to: Store (5, X) 1843 X = 2 + 3 ==> is converted to: Store (5, X) 1844 1845Updated support for the SLIC table (Software Licensing Description Table) 1846in both the Data Table compiler and the disassembler. The SLIC table 1847support now conforms to "Microsoft Software Licensing Tables (SLIC and 1848MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data 1849following the ACPI header is now defined to be "Proprietary Data", and as 1850such, can only be entered or displayed as a hex data block. 1851 1852Implemented full support for the MSDM table as described in the document 1853above. Note: The format of MSDM is similar to SLIC. Any MSDM data 1854following the ACPI header is defined to be "Proprietary Data", and can 1855only be entered or displayed as a hex data block. 1856 1857Implemented the -Pn option for the iASL Table Compiler (was only 1858implemented for the ASL compiler). This option disables the iASL 1859preprocessor. 1860 1861Disassembler: For disassembly of Data Tables, added a comment field 1862around the Ascii equivalent data that is emitted as part of the "Raw 1863Table Data" block. This prevents the iASL Preprocessor from possible 1864confusion if/when the table is compiled. 1865 1866Disassembler: Added an option (-df) to force the disassembler to assume 1867that the table being disassembled contains valid AML. This feature is 1868useful for disassembling AML files that contain ACPI signatures other 1869than DSDT or SSDT (such as OEMx or other signatures). 1870 1871Changes for the EFI version of the tools: 18721) Fixed a build error/issue 18732) Fixed a cast warning 1874 1875iASL: Fixed a path issue with the __FILE__ operator by making the 1876directory prefix optional within the internal SplitInputFilename 1877function. 1878 1879Debugger: Removed some unused global variables. 1880 1881Tests: Updated the makefile for proper generation of the AAPITS suite. 1882 1883 1884---------------------------------------- 188504 February 2015. Summary of changes for version 20150204: 1886 1887ACPICA kernel-resident subsystem: 1888 1889Updated all ACPICA copyrights and signons to 2014. Added the 2014 1890copyright to all module headers and signons, including the standard Linux 1891header. This affects virtually every file in the ACPICA core subsystem, 1892iASL compiler, all ACPICA utilities, and the test suites. 1893 1894Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues. 1895A raw gpe handling mechanism was created to allow better handling of GPE 1896storms that aren't easily managed by the normal handler. The raw handler 1897allows disabling/renabling of the the GPE so that interrupt storms can be 1898avoided in cases where events cannot be timely serviced. In this 1899scenario, handlers should use the AcpiSetGpe() API to disable/enable the 1900GPE. This API will leave the reference counts undisturbed, thereby 1901preventing unintentional clearing of the GPE when the intent in only to 1902temporarily disable it. Raw handlers allow enabling and disabling of a 1903GPE by removing GPE register locking. As such, raw handlers much provide 1904their own locks while using GPE API's to protect access to GPE data 1905structures. 1906Lv Zheng 1907 1908Events: Always modify GPE registers under the GPE lock. 1909Applies GPE lock around AcpiFinishGpe() to protect access to GPE register 1910values. Reported as bug by joe.liu@apple.com. 1911 1912Unix makefiles: Separate option to disable optimizations and 1913_FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the 1914NOOPT disable option and creates a separate flag (NOFORTIFY) for this 1915purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined 1916errors when building ACPICA. This allows disabling the option without 1917also having to disable optimazations. 1918David Box 1919 1920 Current Release: 1921 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 1922 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total 1923 1924-- 1925-------------------------------------- 192607 November 2014. Summary of changes for version 20141107: 1927 1928This release is available at https://acpica.org/downloads 1929 1930This release introduces and implements language extensions to ASL that 1931provide support for symbolic ("C-style") operators and expressions. These 1932language extensions are known collectively as ASL+. 1933 1934 19351) iASL Compiler/Disassembler and Tools: 1936 1937Disassembler: Fixed a problem with disassembly of the UartSerialBus 1938macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E. 1939Box. 1940 1941Disassembler: Fixed the Unicode macro support to add escape sequences. 1942All non-printable ASCII values are emitted as escape sequences, as well 1943as the standard escapes for quote and backslash. Ensures that the 1944disassembled macro can be correctly recompiled. 1945 1946iASL: Added Printf/Fprintf macros for formatted output. These macros are 1947translated to existing AML Concatenate and Store operations. Printf 1948writes to the ASL Debug object. Fprintf allows the specification of an 1949ASL name as the target. Only a single format specifier is required, %o, 1950since the AML interpreter dynamically converts objects to the required 1951type. David E. Box. 1952 1953 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 1954 (Concatenate (Concatenate (Concatenate ("", Arg0), 1955 ": Unexpected value for "), Arg1), ", "), Arg2), 1956 " at line "), Arg3), Debug) 1957 1958 (new) Printf ("%o: Unexpected value for %o, %o at line %o", 1959 Arg0, Arg1, Arg2, Arg3) 1960 1961 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 1962 ("", Arg1), ": "), Arg0), " Successful"), STR1) 1963 1964 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0) 1965 1966iASL: Added debug options (-bp, -bt) to dynamically prune levels of the 1967ASL parse tree before the AML code is generated. This allows blocks of 1968ASL code to be removed in order to help locate and identify problem 1969devices and/or code. David E. Box. 1970 1971AcpiExec: Added support (-fi) for an optional namespace object 1972initialization file. This file specifies initial values for namespace 1973objects as necessary for debugging and testing different ASL code paths 1974that may be taken as a result of BIOS options. 1975 1976 19772) Overview of symbolic operator support for ASL (ASL+) 1978------------------------------------------------------- 1979 1980As an extension to the ASL language, iASL implements support for symbolic 1981(C-style) operators for math and logical expressions. This can greatly 1982simplify ASL code as well as improve both readability and 1983maintainability. These language extensions can exist concurrently with 1984all legacy ASL code and expressions. 1985 1986The symbolic extensions are 100% compatible with existing AML 1987interpreters, since no new AML opcodes are created. To implement the 1988extensions, the iASL compiler transforms the symbolic expressions into 1989the legacy ASL/AML equivalents at compile time. 1990 1991Full symbolic expressions are supported, along with the standard C 1992precedence and associativity rules. 1993 1994Full disassembler support for the symbolic expressions is provided, and 1995creates an automatic migration path for existing ASL code to ASL+ code 1996via the disassembly process. By default, the disassembler now emits ASL+ 1997code with symbolic expressions. An option (-dl) is provided to force the 1998disassembler to emit legacy ASL code if desired. 1999 2000Below is the complete list of the currently supported symbolic operators 2001with examples. See the iASL User Guide for additional information. 2002 2003 2004ASL+ Syntax Legacy ASL Equivalent 2005----------- --------------------- 2006 2007 // Math operators 2008 2009Z = X + Y Add (X, Y, Z) 2010Z = X - Y Subtract (X, Y, Z) 2011Z = X * Y Multiply (X, Y, Z) 2012Z = X / Y Divide (X, Y, , Z) 2013Z = X % Y Mod (X, Y, Z) 2014Z = X << Y ShiftLeft (X, Y, Z) 2015Z = X >> Y ShiftRight (X, Y, Z) 2016Z = X & Y And (X, Y, Z) 2017Z = X | Y Or (X, Y, Z) 2018Z = X ^ Y Xor (X, Y, Z) 2019Z = ~X Not (X, Z) 2020X++ Increment (X) 2021X-- Decrement (X) 2022 2023 // Logical operators 2024 2025(X == Y) LEqual (X, Y) 2026(X != Y) LNotEqual (X, Y) 2027(X < Y) LLess (X, Y) 2028(X > Y) LGreater (X, Y) 2029(X <= Y) LLessEqual (X, Y) 2030(X >= Y) LGreaterEqual (X, Y) 2031(X && Y) LAnd (X, Y) 2032(X || Y) LOr (X, Y) 2033(!X) LNot (X) 2034 2035 // Assignment and compound assignment operations 2036 2037X = Y Store (Y, X) 2038X += Y Add (X, Y, X) 2039X -= Y Subtract (X, Y, X) 2040X *= Y Multiply (X, Y, X) 2041X /= Y Divide (X, Y, , X) 2042X %= Y Mod (X, Y, X) 2043X <<= Y ShiftLeft (X, Y, X) 2044X >>= Y ShiftRight (X, Y, X) 2045X &= Y And (X, Y, X) 2046X |= Y Or (X, Y, X) 2047X ^= Y Xor (X, Y, X) 2048 2049 20503) ASL+ Examples: 2051----------------- 2052 2053Legacy ASL: 2054 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual ( 2055 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530, 20560x03FB), 2057 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0)))) 2058 { 2059 And (MEMB, 0xFFFFFFF0, SRMB) 2060 Store (MEMB, Local2) 2061 Store (PDBM, Local1) 2062 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM) 2063 Store (SRMB, MEMB) 2064 Or (PDBM, 0x02, PDBM) 2065 } 2066 2067ASL+ version: 2068 If (((R510 & 0x03FB) == 0x02E0) || 2069 ((R520 & 0x03FB) == 0x02E0) || 2070 ((R530 & 0x03FB) == 0x02E0) || 2071 ((R540 & 0x03FB) == 0x02E0)) 2072 { 2073 SRMB = (MEMB & 0xFFFFFFF0) 2074 Local2 = MEMB 2075 Local1 = PDBM 2076 PDBM &= 0xFFFFFFFFFFFFFFF9 2077 MEMB = SRMB 2078 PDBM |= 0x02 2079 } 2080 2081Legacy ASL: 2082 Store (0x1234, Local1) 2083 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3) 2084 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3) 2085 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3) 2086 Store (Index (PKG1, 0x03), Local6) 2087 Store (Add (Local3, Local2), Debug) 2088 Add (Local1, 0x0F, Local2) 2089 Add (Local1, Multiply (Local2, Local3), Local2) 2090 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3) 2091 2092ASL+ version: 2093 Local1 = 0x1234 2094 Local3 = (((Local1 + TEST) + 0x20) * Local2) 2095 Local3 = (Local2 * ((Local1 + TEST) + 0x20)) 2096 Local3 = (Local1 + (TEST + (0x20 * Local2))) 2097 Local6 = Index (PKG1, 0x03) 2098 Debug = (Local3 + Local2) 2099 Local2 = (Local1 + 0x0F) 2100 Local2 = (Local1 + (Local2 * Local3)) 2101 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1)) 2102 2103 2104---------------------------------------- 210526 September 2014. Summary of changes for version 20140926: 2106 21071) ACPICA kernel-resident subsystem: 2108 2109Updated the GPIO operation region handler interface (GeneralPurposeIo). 2110In order to support GPIO Connection objects with multiple pins, along 2111with the related Field objects, the following changes to the interface 2112have been made: The Address is now defined to be the offset in bits of 2113the field unit from the previous invocation of a Connection. It can be 2114viewed as a "Pin Number Index" into the connection resource descriptor. 2115The BitWidth is the exact bit width of the field. It is usually one bit, 2116but not always. See the ACPICA reference guide (section 8.8.6.2.1) for 2117additional information and examples. 2118 2119GPE support: During ACPICA/GPE initialization, ensure that all GPEs with 2120corresponding _Lxx/_Exx methods are disabled (they may have been enabled 2121by the firmware), so that they cannot fire until they are enabled via 2122AcpiUpdateAllGpes. Rafael J. Wysocki. 2123 2124Added a new return flag for the Event/GPE status interfaces -- 2125AcpiGetEventStatus and AcpiGetGpeStatus. The new 2126ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or 2127GPE currently has a handler associated with it, and can thus actually 2128affect the system. Lv Zheng. 2129 2130Example Code and Data Size: These are the sizes for the OS-independent 2131acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2132debug version of the code includes the debug output trace mechanism and 2133has a much larger code and data size. 2134 2135 Current Release: 2136 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 2137 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 2138 Previous Release: 2139 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 2140 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 2141 21422) iASL Compiler/Disassembler and Tools: 2143 2144iASL: Fixed a memory allocation/free regression introduced in 20140828 2145that could cause the compiler to crash. This was introduced inadvertently 2146during the effort to eliminate compiler memory leaks. ACPICA BZ 1111, 21471113. 2148 2149iASL: Removed two error messages that have been found to create false 2150positives, until they can be fixed and fully validated (ACPICA BZ 1112): 21511) Illegal forward reference within a method 21522) Illegal reference across two methods 2153 2154iASL: Implemented a new option (-lm) to create a hardware mapping file 2155that summarizes all GPIO, I2C, SPI, and UART connections. This option 2156works for both the compiler and disassembler. See the iASL compiler user 2157guide for additional information and examples (section 6.4.6). 2158 2159AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to 2160version 2. This corrects the AE_BAD_HEADER exception seen on systems with 2161a version 1 RSDP. Lv Zheng ACPICA BZ 1097. 2162 2163AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode 2164unless STDIN is actually a terminal. Assists with batch-mode processing. 2165ACPICA BZ 1114. 2166 2167Disassembler/AcpiHelp: Added another large group of recognized _HID 2168values. 2169 2170 2171---------------------------------------- 217228 August 2014. Summary of changes for version 20140828: 2173 21741) ACPICA kernel-resident subsystem: 2175 2176Fixed a problem related to the internal use of the Timer() operator where 2177a 64-bit divide could cause an attempted link to a double-precision math 2178library. This divide is not actually necessary, so the code was 2179restructured to eliminate it. Lv Zheng. 2180 2181ACPI 5.1: Added support for the runtime validation of the _DSD package 2182(similar to the iASL support). 2183 2184ACPI 5.1/Headers: Added support for the GICC affinity subtable to the 2185SRAT table. Hanjun Guo <hanjun.guo@linaro.org>. 2186 2187Example Code and Data Size: These are the sizes for the OS-independent 2188acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2189debug version of the code includes the debug output trace mechanism and 2190has a much larger code and data size. 2191 2192 Current Release: 2193 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 2194 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 2195 Previous Release: 2196 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1 2197 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 2198 21992) iASL Compiler/Disassembler and Tools: 2200 2201AcpiExec: Fixed a problem on unix systems where the original terminal 2202state was not always properly restored upon exit. Seen when using the -v 2203option. ACPICA BZ 1104. 2204 2205iASL: Fixed a problem with the validation of the ranges/length within the 2206Memory24 resource descriptor. There was a boundary condition when the 2207range was equal to the (length -1) caused by the fact that these values 2208are defined in 256-byte blocks, not bytes. ACPICA BZ 1098 2209 2210Disassembler: Fixed a problem with the GpioInt descriptor interrupt 2211polarity 2212flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword 2213is 2214now supported properly. 2215 2216ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported 2217in the disassembler, data table compiler, and table template generator. 2218 2219iASL: Added a requirement for Device() objects that one of either a _HID 2220or _ADR must exist within the scope of a Device, as per the ACPI 2221specification. Remove a similar requirement that was incorrectly in place 2222for the _DSD object. 2223 2224iASL: Added error detection for illegal named references within control 2225methods that would cause runtime failures. Now trapped as errors are: 1) 2226References to objects within a non-parent control method. 2) Forward 2227references (within a method) -- for control methods, AML interpreters use 2228a one-pass parse of control methods. ACPICA BZ 1008. 2229 2230iASL: Added error checking for dependencies related to the _PSx power 2231methods. ACPICA BZ 1029. 22321) For _PS0, one of these must exist within the same scope: _PS1, _PS2, 2233_PS3. 22342) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same 2235scope. 2236 2237iASL and table compiler: Cleanup miscellaneous memory leaks by fully 2238deploying the existing object and string caches and adding new caches for 2239the table compiler. 2240 2241iASL: Split the huge parser source file into multiple subfiles to improve 2242manageability. Generation now requires the M4 macro preprocessor, which 2243is part of the Bison distribution on both unix and windows platforms. 2244 2245AcpiSrc: Fixed and removed all extraneous warnings generated during 2246entire ACPICA source code scan and/or conversion. 2247 2248 2249---------------------------------------- 2250 225124 July 2014. Summary of changes for version 20140724: 2252 2253The ACPI 5.1 specification has been released and is available at: 2254http://uefi.org/specs/access 2255 2256 22570) ACPI 5.1 support in ACPICA: 2258 2259ACPI 5.1 is fully supported in ACPICA as of this release. 2260 2261New predefined names. Support includes iASL and runtime ACPICA 2262validation. 2263 _CCA (Cache Coherency Attribute). 2264 _DSD (Device-Specific Data). David Box. 2265 2266Modifications to existing ACPI tables. Support includes headers, iASL 2267Data Table compiler, disassembler, and the template generator. 2268 FADT - New fields and flags. Graeme Gregory. 2269 GTDT - One new subtable and new fields. Tomasz Nowicki. 2270 MADT - Two new subtables. Tomasz Nowicki. 2271 PCCT - One new subtable. 2272 2273Miscellaneous. 2274 New notification type for System Resource Affinity change events. 2275 2276 22771) ACPICA kernel-resident subsystem: 2278 2279Fixed a regression introduced in 20140627 where a fault can happen during 2280the deletion of Alias AML namespace objects. The problem affected both 2281the core ACPICA and the ACPICA tools including iASL and AcpiExec. 2282 2283Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a 2284simple mechanism to enable wake GPEs that have no associated handler or 2285control method. Rafael Wysocki. 2286 2287Updated the AcpiEnableGpe interface to disallow the enable if there is no 2288handler or control method associated with the particular GPE. This will 2289help avoid meaningless GPEs and even GPE floods. Rafael Wysocki. 2290 2291Updated GPE handling and dispatch by disabling the GPE before clearing 2292the status bit for edge-triggered GPEs. Lv Zheng. 2293 2294Added Timer() support to the AML Debug object. The current timer value is 2295now displayed with each invocation of (Store to) the debug object to 2296enable simple generation of execution times for AML code (method 2297execution for example.) ACPICA BZ 1093. 2298 2299Example Code and Data Size: These are the sizes for the OS-independent 2300acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2301debug version of the code includes the debug output trace mechanism and 2302has a much larger code and data size. 2303 2304 Current Release: 2305 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total 2306 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 2307 Previous Release: 2308 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 2309 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 2310 2311 23122) iASL Compiler/Disassembler and Tools: 2313 2314Fixed an issue with the recently added local printf implementation, 2315concerning width/precision specifiers that could cause incorrect output. 2316Lv Zheng. ACPICA BZ 1094. 2317 2318Disassembler: Added support to detect buffers that contain UUIDs and 2319disassemble them to an invocation of the ToUUID operator. Also emit 2320commented descriptions of known ACPI-related UUIDs. 2321 2322AcpiHelp: Added support to display known ACPI-related UUIDs. New option, 2323-u. Adds three new files. 2324 2325iASL: Update table compiler and disassembler for DMAR table changes that 2326were introduced in September 2013. With assistance by David Woodhouse. 2327 2328---------------------------------------- 232927 June 2014. Summary of changes for version 20140627: 2330 23311) ACPICA kernel-resident subsystem: 2332 2333Formatted Output: Implemented local versions of standard formatted output 2334utilities such as printf, etc. Over time, it has been discovered that 2335there are in fact many portability issues with printf, and the addition 2336of this feature will fix/prevent these issues once and for all. Some 2337known issues are summarized below: 2338 23391) Output of 64-bit values is not portable. For example, UINT64 is %ull 2340for the Linux kernel and is %uI64 for some MSVC versions. 23412) Invoking printf consistently in a manner that is portable across both 234232-bit and 64-bit platforms is difficult at best in many situations. 23433) The output format for pointers varies from system to system (leading 2344zeros especially), and leads to inconsistent output from ACPICA across 2345platforms. 23464) Certain platform-specific printf formats may conflict with ACPICA use. 23475) If there is no local C library available, ACPICA now has local support 2348for printf. 2349 2350-- To address these printf issues in a complete manner, ACPICA now 2351directly implements a small subset of printf format specifiers, only 2352those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng. 2353 2354Implemented support for ACPICA generation within the EFI environment. 2355Initially, the AcpiDump utility is supported in the UEFI shell 2356environment. Lv Zheng. 2357 2358Added a new external interface, AcpiLogError, to improve ACPICA 2359portability. This allows the host to redirect error messages from the 2360ACPICA utilities. Lv Zheng. 2361 2362Added and deployed new OSL file I/O interfaces to improve ACPICA 2363portability: 2364 AcpiOsOpenFile 2365 AcpiOsCloseFile 2366 AcpiOsReadFile 2367 AcpiOsWriteFile 2368 AcpiOsGetFileOffset 2369 AcpiOsSetFileOffset 2370There are C library implementations of these functions in the new file 2371service_layers/oslibcfs.c -- however, the functions can be implemented by 2372the local host in any way necessary. Lv Zheng. 2373 2374Implemented a mechanism to disable/enable ACPI table checksum validation 2375at runtime. This can be useful when loading tables very early during OS 2376initialization when it may not be possible to map the entire table in 2377order to compute the checksum. Lv Zheng. 2378 2379Fixed a buffer allocation issue for the Generic Serial Bus support. 2380Originally, a fixed buffer length was used. This change allows for 2381variable-length buffers based upon the protocol indicated by the field 2382access attributes. Reported by Lan Tianyu. Lv Zheng. 2383 2384Fixed a problem where an object detached from a namespace node was not 2385properly terminated/cleared and could cause a circular list problem if 2386reattached. ACPICA BZ 1063. David Box. 2387 2388Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick. 2389 2390Fixed a possible memory leak in an error return path within the function 2391AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King. 2392 2393Example Code and Data Size: These are the sizes for the OS-independent 2394acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2395debug version of the code includes the debug output trace mechanism and 2396has a much larger code and data size. 2397 2398 Current Release: 2399 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 2400 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 2401 Previous Release: 2402 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 2403 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 2404 2405 24062) iASL Compiler/Disassembler and Tools: 2407 2408Disassembler: Add dump of ASCII equivalent text within a comment at the 2409end of each line of the output for the Buffer() ASL operator. 2410 2411AcpiDump: Miscellaneous changes: 2412 Fixed repetitive table dump in -n mode. 2413 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if 2414the ACPI 2.0 GUID fails. 2415 2416iASL: Fixed a problem where the compiler could fault if incorrectly given 2417an acpidump output file as input. ACPICA BZ 1088. David Box. 2418 2419AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if 2420they are invoked without any arguments. 2421 2422Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ 24231086. Colin Ian King. 2424 2425Disassembler: Cleaned up a block of code that extracts a parent Op 2426object. Added a comment that explains that the parent is guaranteed to be 2427valid in this case. ACPICA BZ 1069. 2428 2429 2430---------------------------------------- 243124 April 2014. Summary of changes for version 20140424: 2432 24331) ACPICA kernel-resident subsystem: 2434 2435Implemented support to skip/ignore NULL address entries in the RSDT/XSDT. 2436Some of these tables are known to contain a trailing NULL entry. Lv 2437Zheng. 2438 2439Removed an extraneous error message for the case where there are a large 2440number of system GPEs (> 124). This was the "32-bit FADT register is too 2441long to convert to GAS struct" message, which is irrelevant for GPEs 2442since the GPEx_BLK_LEN fields of the FADT are always used instead of the 2443(limited capacity) GAS bit length. Also, several changes to ensure proper 2444support for GPE numbers > 255, where some "GPE number" fields were 8-bits 2445internally. 2446 2447Implemented and deployed additional configuration support for the public 2448ACPICA external interfaces. Entire classes of interfaces can now be 2449easily modified or configured out, replaced by stubbed inline functions 2450by default. Lv Zheng. 2451 2452Moved all public ACPICA runtime configuration globals to the public 2453ACPICA external interface file for convenience. Also, removed some 2454obsolete/unused globals. See the file acpixf.h. Lv Zheng. 2455 2456Documentation: Added a new section to the ACPICA reference describing the 2457maximum number of GPEs that can be supported by the FADT-defined GPEs in 2458block zero and one. About 1200 total. See section 4.4.1 of the ACPICA 2459reference. 2460 2461Example Code and Data Size: These are the sizes for the OS-independent 2462acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2463debug version of the code includes the debug output trace mechanism and 2464has a much larger code and data size. 2465 2466 Current Release: 2467 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 2468 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 2469 Previous Release: 2470 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 2471 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 2472 2473 24742) iASL Compiler/Disassembler and Tools: 2475 2476iASL and disassembler: Add full support for the LPIT table (Low Power 2477Idle Table). Includes support in the disassembler, data table compiler, 2478and template generator. 2479 2480AcpiDump utility: 24811) Add option to force the use of the RSDT (over the XSDT). 24822) Improve validation of the RSDP signature (use 8 chars instead of 4). 2483 2484iASL: Add check for predefined packages that are too large. For 2485predefined names that contain subpackages, check if each subpackage is 2486too large. (Check for too small already exists.) 2487 2488Debugger: Updated the GPE command (which simulates a GPE by executing the 2489GPE code paths in ACPICA). The GPE device is now optional, and defaults 2490to the GPE 0/1 FADT-defined blocks. 2491 2492Unix application OSL: Update line-editing support. Add additional error 2493checking and take care not to reset terminal attributes on exit if they 2494were never set. This should help guarantee that the terminal is always 2495left in the previous state on program exit. 2496 2497 2498---------------------------------------- 249925 March 2014. Summary of changes for version 20140325: 2500 25011) ACPICA kernel-resident subsystem: 2502 2503Updated the auto-serialize feature for control methods. This feature 2504automatically serializes all methods that create named objects in order 2505to prevent runtime errors. The update adds support to ignore the 2506currently executing AML SyncLevel when invoking such a method, in order 2507to prevent disruption of any existing SyncLevel priorities that may exist 2508in the AML code. Although the use of SyncLevels is relatively rare, this 2509change fixes a regression where an AE_AML_MUTEX_ORDER exception can 2510appear on some machines starting with the 20140214 release. 2511 2512Added a new external interface to allow the host to install ACPI tables 2513very early, before the namespace is even created. AcpiInstallTable gives 2514the host additional flexibility for ACPI table management. Tables can be 2515installed directly by the host as if they had originally appeared in the 2516XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables 2517(anything except the DSDT and FACS). Adds a new file, tbdata.c, along 2518with additional internal restructuring and cleanup. See the ACPICA 2519Reference for interface details. Lv Zheng. 2520 2521Added validation of the checksum for all incoming dynamically loaded 2522tables (via external interfaces or via AML Load/LoadTable operators). Lv 2523Zheng. 2524 2525Updated the use of the AcpiOsWaitEventsComplete interface during Notify 2526and GPE handler removal. Restructured calls to eliminate possible race 2527conditions. Lv Zheng. 2528 2529Added a warning for the use/execution of the ASL/AML Unload (table) 2530operator. This will help detect and identify machines that use this 2531operator if and when it is ever used. This operator has never been seen 2532in the field and the usage model and possible side-effects of the drastic 2533runtime action of a full table removal are unknown. 2534 2535Reverted the use of #pragma push/pop which was introduced in the 20140214 2536release. It appears that push and pop are not implemented by enough 2537compilers to make the use of this feature feasible for ACPICA at this 2538time. However, these operators may be deployed in a future ACPICA 2539release. 2540 2541Added the missing EXPORT_SYMBOL macros for the install and remove SCI 2542handler interfaces. 2543 2544Source code generation: 25451) Disabled the use of the "strchr" macro for the gcc-specific 2546generation. For some versions of gcc, this macro can periodically expose 2547a compiler bug which in turn causes compile-time error(s). 25482) Added support for PPC64 compilation. Colin Ian King. 2549 2550Example Code and Data Size: These are the sizes for the OS-independent 2551acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2552debug version of the code includes the debug output trace mechanism and 2553has a much larger code and data size. 2554 2555 Current Release: 2556 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 2557 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 2558 Previous Release: 2559 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 2560 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 2561 2562 25632) iASL Compiler/Disassembler and Tools: 2564 2565Disassembler: Added several new features to improve the readability of 2566the resulting ASL code. Extra information is emitted within comment 2567fields in the ASL code: 25681) Known _HID/_CID values are decoded to descriptive text. 25692) Standard values for the Notify() operator are decoded to descriptive 2570text. 25713) Target operands are expanded to full pathnames (in a comment) when 2572possible. 2573 2574Disassembler: Miscellaneous updates for extern() handling: 25751) Abort compiler if file specified by -fe option does not exist. 25762) Silence unnecessary warnings about argument count mismatches. 25773) Update warning messages concerning unresolved method externals. 25784) Emit "UnknownObj" keyword for externals whose type cannot be 2579determined. 2580 2581AcpiHelp utility: 25821) Added the -a option to display both the ASL syntax and the AML 2583encoding for an input ASL operator. This effectively displays all known 2584information about an ASL operator with one AcpiHelp invocation. 25852) Added substring match support (similar to a wildcard) for the -i 2586(_HID/PNP IDs) option. 2587 2588iASL/Disassembler: Since this tool does not yet support execution on big- 2589endian machines, added detection of endianness and an error message if 2590execution is attempted on big-endian. Support for big-endian within iASL 2591is a feature that is on the ACPICA to-be-done list. 2592 2593AcpiBin utility: 25941) Remove option to extract binary files from an acpidump; this function 2595is made obsolete by the AcpiXtract utility. 25962) General cleanup of open files and allocated buffers. 2597 2598 2599---------------------------------------- 260014 February 2014. Summary of changes for version 20140214: 2601 26021) ACPICA kernel-resident subsystem: 2603 2604Implemented a new mechanism to proactively prevent problems with ill- 2605behaved reentrant control methods that create named ACPI objects. This 2606behavior is illegal as per the ACPI specification, but is nonetheless 2607frequently seen in the field. Previously, this could lead to an 2608AE_ALREADY_EXISTS exception if the method was actually entered by more 2609than one thread. This new mechanism detects such methods at table load 2610time and marks them "serialized" to prevent reentrancy. A new global 2611option, AcpiGbl_AutoSerializeMethods, has been added to disable this 2612feature if desired. This mechanism and global option obsoletes and 2613supersedes the previous AcpiGbl_SerializeAllMethods option. 2614 2615Added the "Windows 2013" string to the _OSI support. ACPICA will now 2616respond TRUE to _OSI queries with this string. It is the stated policy of 2617ACPICA to add new strings to the _OSI support as soon as possible after 2618they are defined. See the full ACPICA _OSI policy which has been added to 2619the utilities/utosi.c file. 2620 2621Hardened/updated the _PRT return value auto-repair code: 26221) Do not abort the repair on a single subpackage failure, continue to 2623check all subpackages. 26242) Add check for the minimum subpackage length (4). 26253) Properly handle extraneous NULL package elements. 2626 2627Added support to avoid the possibility of infinite loops when traversing 2628object linked lists. Never allow an infinite loop, even in the face of 2629corrupted object lists. 2630 2631ACPICA headers: Deployed the use of #pragma pack(push) and #pragma 2632pack(pop) directives to ensure that the ACPICA headers are independent of 2633compiler settings or other host headers. 2634 2635Example Code and Data Size: These are the sizes for the OS-independent 2636acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2637debug version of the code includes the debug output trace mechanism and 2638has a much larger code and data size. 2639 2640 Current Release: 2641 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 2642 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 2643 Previous Release: 2644 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 2645 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 2646 2647 26482) iASL Compiler/Disassembler and Tools: 2649 2650iASL/Table-compiler: Fixed a problem with support for the SPMI table. The 2651first reserved field was incorrectly forced to have a value of zero. This 2652change correctly forces the field to have a value of one. ACPICA BZ 1081. 2653 2654Debugger: Added missing support for the "Extra" and "Data" subobjects 2655when displaying object data. 2656 2657Debugger: Added support to display entire object linked lists when 2658displaying object data. 2659 2660iASL: Removed the obsolete -g option to obtain ACPI tables from the 2661Windows registry. This feature has been superseded by the acpidump 2662utility. 2663 2664 2665---------------------------------------- 266614 January 2014. Summary of changes for version 20140114: 2667 26681) ACPICA kernel-resident subsystem: 2669 2670Updated all ACPICA copyrights and signons to 2014. Added the 2014 2671copyright to all module headers and signons, including the standard Linux 2672header. This affects virtually every file in the ACPICA core subsystem, 2673iASL compiler, all ACPICA utilities, and the test suites. 2674 2675Improved parameter validation for AcpiInstallGpeBlock. Added the 2676following checks: 26771) The incoming device handle refers to type ACPI_TYPE_DEVICE. 26782) There is not already a GPE block attached to the device. 2679Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a 2680device. 2681 2682Correctly support "references" in the ACPI_OBJECT. This change fixes the 2683support to allow references (namespace nodes) to be passed as arguments 2684to control methods via the evaluate object interface. This is probably 2685most useful for testing purposes, however. 2686 2687Improved support for 32/64 bit physical addresses in printf()-like 2688output. This change improves the support for physical addresses in printf 2689debug statements and other output on both 32-bit and 64-bit hosts. It 2690consistently outputs the appropriate number of bytes for each host. The 2691%p specifier is unsatisfactory since it does not emit uniform output on 2692all hosts/clib implementations (on some, leading zeros are not supported, 2693leading to difficult-to-read output). 2694 2695Example Code and Data Size: These are the sizes for the OS-independent 2696acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2697debug version of the code includes the debug output trace mechanism and 2698has a much larger code and data size. 2699 2700 Current Release: 2701 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 2702 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 2703 Previous Release: 2704 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 2705 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 2706 2707 27082) iASL Compiler/Disassembler and Tools: 2709 2710iASL: Fix a possible fault when using the Connection() operator. Fixes a 2711problem if the parent Field definition for the Connection operator refers 2712to an operation region that does not exist. ACPICA BZ 1064. 2713 2714AcpiExec: Load of local test tables is now optional. The utility has the 2715capability to load some various tables to test features of ACPICA. 2716However, there are enough of them that the output of the utility became 2717confusing. With this change, only the required local tables are displayed 2718(RSDP, XSDT, etc.) along with the actual tables loaded via the command 2719line specification. This makes the default output simler and easier to 2720understand. The -el command line option restores the original behavior 2721for testing purposes. 2722 2723AcpiExec: Added support for overlapping operation regions. This change 2724expands the simulation of operation regions by supporting regions that 2725overlap within the given address space. Supports SystemMemory and 2726SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031. 2727 2728AcpiExec: Added region handler support for PCI_Config and EC spaces. This 2729allows AcpiExec to simulate these address spaces, similar to the current 2730support for SystemMemory and SystemIO. 2731 2732Debugger: Added new command to read/write/compare all namespace objects. 2733The command "test objects" will exercise the entire namespace by writing 2734new values to each data object, and ensuring that the write was 2735successful. The original value is then restored and verified. 2736 2737Debugger: Added the "test predefined" command. This change makes this 2738test public and puts it under the new "test" command. The test executes 2739each and every predefined name within the current namespace. 2740 2741 2742---------------------------------------- 274318 December 2013. Summary of changes for version 20131218: 2744 2745Global note: The ACPI 5.0A specification was released this month. There 2746are no changes needed for ACPICA since this release of ACPI is an 2747errata/clarification release. The specification is available at 2748acpi.info. 2749 2750 27511) ACPICA kernel-resident subsystem: 2752 2753Added validation of the XSDT root table if it is present. Some older 2754platforms contain an XSDT that is ill-formed or otherwise invalid (such 2755as containing some or all entries that are NULL pointers). This change 2756adds a new function to validate the XSDT before actually using it. If the 2757XSDT is found to be invalid, ACPICA will now automatically fall back to 2758using the RSDT instead. Original implementation by Zhao Yakui. Ported to 2759ACPICA and enhanced by Lv Zheng and Bob Moore. 2760 2761Added a runtime option to ignore the XSDT and force the use of the RSDT. 2762This change adds a runtime option that will force ACPICA to use the RSDT 2763instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec 2764requires that an XSDT be used instead of the RSDT, the XSDT has been 2765found to be corrupt or ill-formed on some machines. Lv Zheng. 2766 2767Added a runtime option to favor 32-bit FADT register addresses over the 276864-bit addresses. This change adds an option to favor 32-bit FADT 2769addresses when there is a conflict between the 32-bit and 64-bit versions 2770of the same register. The default behavior is to use the 64-bit version 2771in accordance with the ACPI specification. This can now be overridden via 2772the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng. 2773 2774During the change above, the internal "Convert FADT" and "Verify FADT" 2775functions have been merged to simplify the code, making it easier to 2776understand and maintain. ACPICA BZ 933. 2777 2778Improve exception reporting and handling for GPE block installation. 2779Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the 2780status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019. 2781 2782Added helper macros to extract bus/segment numbers from the HEST table. 2783This change adds two macros to extract the encoded bus and segment 2784numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT. 2785Betty Dall <betty.dall@hp.com> 2786 2787Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used 2788by ACPICA. It is not a public macro, so it should have no effect on 2789existing OSV code. Lv Zheng. 2790 2791Example Code and Data Size: These are the sizes for the OS-independent 2792acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2793debug version of the code includes the debug output trace mechanism and 2794has a much larger code and data size. 2795 2796 Current Release: 2797 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 2798 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 2799 Previous Release: 2800 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 2801 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 2802 2803 28042) iASL Compiler/Disassembler and Tools: 2805 2806Disassembler: Improved pathname support for emitted External() 2807statements. This change adds full pathname support for external names 2808that have been resolved internally by the inclusion of additional ACPI 2809tables (via the iASL -e option). Without this change, the disassembler 2810can emit multiple externals for the same object, or it become confused 2811when the Scope() operator is used on an external object. Overall, greatly 2812improves the ability to actually recompile the emitted ASL code when 2813objects a referenced across multiple ACPI tables. Reported by Michael 2814Tsirkin (mst@redhat.com). 2815 2816Tests/ASLTS: Updated functional control suite to execute with no errors. 2817David Box. Fixed several errors related to the testing of the interpreter 2818slack mode. Lv Zheng. 2819 2820iASL: Added support to detect names that are declared within a control 2821method, but are unused (these are temporary names that are only valid 2822during the time the method is executing). A remark is issued for these 2823cases. ACPICA BZ 1022. 2824 2825iASL: Added full support for the DBG2 table. Adds full disassembler, 2826table compiler, and template generator support for the DBG2 table (Debug 2827Port 2 table). 2828 2829iASL: Added full support for the PCCT table, update the table definition. 2830Updates the PCCT table definition in the actbl3.h header and adds table 2831compiler and template generator support. 2832 2833iASL: Added an option to emit only error messages (no warnings/remarks). 2834The -ve option will enable only error messages, warnings and remarks are 2835suppressed. This can simplify debugging when only the errors are 2836important, such as when an ACPI table is disassembled and there are many 2837warnings and remarks -- but only the actual errors are of real interest. 2838 2839Example ACPICA code (source/tools/examples): Updated the example code so 2840that it builds to an actual working program, not just example code. Added 2841ACPI tables and execution of an example control method in the DSDT. Added 2842makefile support for Unix generation. 2843 2844 2845---------------------------------------- 284615 November 2013. Summary of changes for version 20131115: 2847 2848This release is available at https://acpica.org/downloads 2849 2850 28511) ACPICA kernel-resident subsystem: 2852 2853Resource Manager: Fixed loop termination for the "get AML length" 2854function. The loop previously had an error termination on a NULL resource 2855pointer, which can never happen since the loop simply increments a valid 2856resource pointer. This fix changes the loop to terminate with an error on 2857an invalid end-of-buffer condition. The problem can be seen as an 2858infinite loop by callers to AcpiSetCurrentResources with an invalid or 2859corrupted resource descriptor, or a resource descriptor that is missing 2860an END_TAG descriptor. Reported by Dan Carpenter 2861<dan.carpenter@oracle.com>. Lv Zheng, Bob Moore. 2862 2863Table unload and ACPICA termination: Delete all attached data objects 2864during namespace node deletion. This fix updates namespace node deletion 2865to delete the entire list of attached objects (attached via 2866AcpiAttachObject) instead of just one of the attached items. ACPICA BZ 28671024. Tomasz Nowicki (tomasz.nowicki@linaro.org). 2868 2869ACPICA termination: Added support to delete all objects attached to the 2870root namespace node. This fix deletes any and all objects that have been 2871attached to the root node via AcpiAttachData. Previously, none of these 2872objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026. 2873 2874Debug output: Do not emit the function nesting level for the in-kernel 2875build. The nesting level is really only useful during a single-thread 2876execution. Therefore, only enable this output for the AcpiExec utility. 2877Also, only emit the thread ID when executing under AcpiExec (Context 2878switches are still always detected and a message is emitted). ACPICA BZ 2879972. 2880 2881Example Code and Data Size: These are the sizes for the OS-independent 2882acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2883debug version of the code includes the debug output trace mechanism and 2884has a much larger code and data size. 2885 2886 Current Release: 2887 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 2888 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 2889 Previous Release: 2890 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 2891 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 2892 2893 28942) iASL Compiler/Disassembler and Tools: 2895 2896AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the 2897correct portable POSIX header for terminal control functions. 2898 2899Disassembler: Fixed control method invocation issues related to the use 2900of the CondRefOf() operator. The problem is seen in the disassembly where 2901control method invocations may not be disassembled properly if the 2902control method name has been used previously as an argument to CondRefOf. 2903The solution is to not attempt to emit an external declaration for the 2904CondRefOf target (it is not necessary in the first place). This prevents 2905disassembler object type confusion. ACPICA BZ 988. 2906 2907Unix Makefiles: Added an option to disable compiler optimizations and the 2908_FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA 2909with optimizations (reportedly, gcc 4.4 for example). This change adds a 2910command line option for make (NOOPT) that disables all compiler 2911optimizations and the _FORTIFY_SOURCE compiler flag. The default 2912optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ 29131034. Lv Zheng, Bob Moore. 2914 2915Tests/ASLTS: Added options to specify individual test cases and modes. 2916This allows testers running aslts.sh to optionally specify individual 2917test modes and test cases. Also added an option to disable the forced 2918generation of the ACPICA tools from source if desired. Lv Zheng. 2919 2920---------------------------------------- 292127 September 2013. Summary of changes for version 20130927: 2922 2923This release is available at https://acpica.org/downloads 2924 2925 29261) ACPICA kernel-resident subsystem: 2927 2928Fixed a problem with store operations to reference objects. This change 2929fixes a problem where a Store operation to an ArgX object that contained 2930a 2931reference to a field object did not complete the automatic dereference 2932and 2933then write to the actual field object. Instead, the object type of the 2934field object was inadvertently changed to match the type of the source 2935operand. The new behavior will actually write to the field object (buffer 2936field or field unit), thus matching the correct ACPI-defined behavior. 2937 2938Implemented support to allow the host to redefine individual OSL 2939prototypes. This change enables the host to redefine OSL prototypes found 2940in the acpiosxf.h file. This allows the host to implement OSL interfaces 2941with a macro or inlined function. Further, it allows the host to add any 2942additional required modifiers such as __iomem, __init, __exit, etc., as 2943necessary on a per-interface basis. Enables maximum flexibility for the 2944OSL interfaces. Lv Zheng. 2945 2946Hardcoded the access width for the FADT-defined reset register. The ACPI 2947specification requires the reset register width to be 8 bits. ACPICA now 2948hardcodes the width to 8 and ignores the FADT width value. This provides 2949compatibility with other ACPI implementations that have allowed BIOS code 2950with bad register width values to go unnoticed. Matthew Garett, Bob 2951Moore, 2952Lv Zheng. 2953 2954Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is 2955used 2956in the OSL header (acpiosxf). The change modifies the position of this 2957macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid 2958build issues if the OSL defines the implementation of the interface to be 2959an inline stub function. Lv Zheng. 2960 2961Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA 2962initialization interfaces. This change adds a new macro for the main init 2963and terminate external interfaces in order to support hosts that require 2964additional or different processing for these functions. Changed from 2965ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv 2966Zheng, Bob Moore. 2967 2968Cleaned up the memory allocation macros for configurability. In the 2969common 2970case, the ACPI_ALLOCATE and related macros now resolve directly to their 2971respective AcpiOs* OSL interfaces. Two options: 29721) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by 2973default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define. 29742) For AcpiExec (and for debugging), the macros can optionally be 2975resolved 2976to the local ACPICA interfaces that track each allocation (local tracking 2977is used to immediately detect memory leaks). 2978Lv Zheng. 2979 2980Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel 2981to predefine this macro to either TRUE or FALSE during the system build. 2982 2983Replaced __FUNCTION_ with __func__ in the gcc-specific header. 2984 2985Example Code and Data Size: These are the sizes for the OS-independent 2986acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2987debug version of the code includes the debug output trace mechanism and 2988has a much larger code and data size. 2989 2990 Current Release: 2991 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 2992 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 2993 Previous Release: 2994 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 2995 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 2996 2997 29982) iASL Compiler/Disassembler and Tools: 2999 3000iASL: Implemented wildcard support for the -e option. This simplifies use 3001when there are many SSDTs that must be included to resolve external 3002method 3003declarations. ACPICA BZ 1041. Example: 3004 iasl -e ssdt*.dat -d dsdt.dat 3005 3006AcpiExec: Add history/line-editing for Unix/Linux systems. This change 3007adds a portable module that implements full history and limited line 3008editing for Unix and Linux systems. It does not use readline() due to 3009portability issues. Instead it uses the POSIX termio interface to put the 3010terminal in raw input mode so that the various special keys can be 3011trapped 3012(such as up/down-arrow for history support and left/right-arrow for line 3013editing). Uses the existing debugger history mechanism. ACPICA BZ 1036. 3014 3015AcpiXtract: Add support to handle (ignore) "empty" lines containing only 3016one or more spaces. This provides compatible with early or different 3017versions of the AcpiDump utility. ACPICA BZ 1044. 3018 3019AcpiDump: Do not ignore tables that contain only an ACPI table header. 3020Apparently, some BIOSs create SSDTs that contain an ACPI table header but 3021no other data. This change adds support to dump these tables. Any tables 3022shorter than the length of an ACPI table header remain in error (an error 3023message is emitted). Reported by Yi Li. 3024 3025Debugger: Echo actual command along with the "unknown command" message. 3026 3027---------------------------------------- 302823 August 2013. Summary of changes for version 20130823: 3029 30301) ACPICA kernel-resident subsystem: 3031 3032Implemented support for host-installed System Control Interrupt (SCI) 3033handlers. Certain ACPI functionality requires the host to handle raw 3034SCIs. For example, the "SCI Doorbell" that is defined for memory power 3035state support requires the host device driver to handle SCIs to examine 3036if the doorbell has been activated. Multiple SCI handlers can be 3037installed to allow for future expansion. New external interfaces are 3038AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for 3039details. Lv Zheng, Bob Moore. ACPICA BZ 1032. 3040 3041Operation region support: Never locally free the handler "context" 3042pointer. This change removes some dangerous code that attempts to free 3043the handler context pointer in some (rare) circumstances. The owner of 3044the handler owns this pointer and the ACPICA code should never touch it. 3045Although not seen to be an issue in any kernel, it did show up as a 3046problem (fault) under AcpiExec. Also, set the internal storage field for 3047the context pointer to zero when the region is deactivated, simply for 3048sanity. David Box. ACPICA BZ 1039. 3049 3050AcpiRead: On error, do not modify the return value target location. If an 3051error happens in the middle of a split 32/32 64-bit I/O operation, do not 3052modify the target of the return value pointer. Makes the code consistent 3053with the rest of ACPICA. Bjorn Helgaas. 3054 3055Example Code and Data Size: These are the sizes for the OS-independent 3056acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3057debug version of the code includes the debug output trace mechanism and 3058has a much larger code and data size. 3059 3060 Current Release: 3061 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 3062 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 3063 Previous Release: 3064 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 3065 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total 3066 3067 30682) iASL Compiler/Disassembler and Tools: 3069 3070AcpiDump: Implemented several new features and fixed some problems: 30711) Added support to dump the RSDP, RSDT, and XSDT tables. 30722) Added support for multiple table instances (SSDT, UEFI). 30733) Added option to dump "customized" (overridden) tables (-c). 30744) Fixed a problem where some table filenames were improperly 3075constructed. 30765) Improved some error messages, removed some unnecessary messages. 3077 3078iASL: Implemented additional support for disassembly of ACPI tables that 3079contain invocations of external control methods. The -fe<file> option 3080allows the import of a file that specifies the external methods along 3081with the required number of arguments for each -- allowing for the 3082correct disassembly of the table. This is a workaround for a limitation 3083of AML code where the disassembler often cannot determine the number of 3084arguments required for an external control method and generates incorrect 3085ASL code. See the iASL reference for details. ACPICA BZ 1030. 3086 3087Debugger: Implemented a new command (paths) that displays the full 3088pathnames (namepaths) and object types of all objects in the namespace. 3089This is an alternative to the namespace command. 3090 3091Debugger: Implemented a new command (sci) that invokes the SCI dispatch 3092mechanism and any installed handlers. 3093 3094iASL: Fixed a possible segfault for "too many parent prefixes" condition. 3095This can occur if there are too many parent prefixes in a namepath (for 3096example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035. 3097 3098Application OSLs: Set the return value for the PCI read functions. These 3099functions simply return AE_OK, but should set the return value to zero 3100also. This change implements this. ACPICA BZ 1038. 3101 3102Debugger: Prevent possible command line buffer overflow. Increase the 3103size of a couple of the debugger line buffers, and ensure that overflow 3104cannot happen. ACPICA BZ 1037. 3105 3106iASL: Changed to abort immediately on serious errors during the parsing 3107phase. Due to the nature of ASL, there is no point in attempting to 3108compile these types of errors, and they typically end up causing a 3109cascade of hundreds of errors which obscure the original problem. 3110 3111---------------------------------------- 311225 July 2013. Summary of changes for version 20130725: 3113 31141) ACPICA kernel-resident subsystem: 3115 3116Fixed a problem with the DerefOf operator where references to FieldUnits 3117and BufferFields incorrectly returned the parent object, not the actual 3118value of the object. After this change, a dereference of a FieldUnit 3119reference results in a read operation on the field to get the value, and 3120likewise, the appropriate BufferField value is extracted from the target 3121buffer. 3122 3123Fixed a problem where the _WAK method could cause a fault under these 3124circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK 3125method returned no value. The problem is rarely seen because most kernels 3126run ACPICA in slack mode. 3127 3128For the DerefOf operator, a fatal error now results if an attempt is made 3129to dereference a reference (created by the Index operator) to a NULL 3130package element. Provides compatibility with other ACPI implementations, 3131and this behavior will be added to a future version of the ACPI 3132specification. 3133 3134The ACPI Power Management Timer (defined in the FADT) is now optional. 3135This provides compatibility with other ACPI implementations and will 3136appear in the next version of the ACPI specification. If there is no PM 3137Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of 3138zero in the FADT indicates no PM timer. 3139 3140Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This 3141allows the host to globally enable/disable all vendor strings, all 3142feature strings, or both. Intended to be primarily used for debugging 3143purposes only. Lv Zheng. 3144 3145Expose the collected _OSI data to the host via a global variable. This 3146data tracks the highest level vendor ID that has been invoked by the BIOS 3147so that the host (and potentially ACPICA itself) can change behaviors 3148based upon the age of the BIOS. 3149 3150Example Code and Data Size: These are the sizes for the OS-independent 3151acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3152debug version of the code includes the debug output trace mechanism and 3153has a much larger code and data size. 3154 3155 Current Release: 3156 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 3157 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 3158 Previous Release: 3159 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 3160 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 3161 3162 31632) iASL Compiler/Disassembler and Tools: 3164 3165iASL: Created the following enhancements for the -so option (create 3166offset table): 31671)Add offsets for the last nameseg in each namepath for every supported 3168object type 31692)Add support for Processor, Device, Thermal Zone, and Scope objects 31703)Add the actual AML opcode for the parent object of every supported 3171object type 31724)Add support for the ZERO/ONE/ONES AML opcodes for integer objects 3173 3174Disassembler: Emit all unresolved external symbols in a single block. 3175These are external references to control methods that could not be 3176resolved, and thus, the disassembler had to make a guess at the number of 3177arguments to parse. 3178 3179iASL: The argument to the -T option (create table template) is now 3180optional. If not specified, the default table is a DSDT, typically the 3181most common case. 3182 3183---------------------------------------- 318426 June 2013. Summary of changes for version 20130626: 3185 31861) ACPICA kernel-resident subsystem: 3187 3188Fixed an issue with runtime repair of the _CST object. Null or invalid 3189elements were not always removed properly. Lv Zheng. 3190 3191Removed an arbitrary restriction of 256 GPEs per GPE block (such as the 3192FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device, 3193the maximum number of GPEs is 1016. Use of multiple GPE block devices 3194makes the system-wide number of GPEs essentially unlimited. 3195 3196Example Code and Data Size: These are the sizes for the OS-independent 3197acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3198debug version of the code includes the debug output trace mechanism and 3199has a much larger code and data size. 3200 3201 Current Release: 3202 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 3203 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 3204 Previous Release: 3205 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 3206 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 3207 3208 32092) iASL Compiler/Disassembler and Tools: 3210 3211Portable AcpiDump: Implemented full support for the Linux and FreeBSD 3212hosts. Now supports Linux, FreeBSD, and Windows. 3213 3214Disassembler: Added some missing types for the HEST and EINJ tables: "Set 3215Error Type With Address", "CMCI", "MCE", and "Flush Cacheline". 3216 3217iASL/Preprocessor: Implemented full support for nested 3218#if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks. 3219 3220Disassembler: Expanded maximum output string length to 64K. Was 256 bytes 3221max. The original purpose of this constraint was to limit the amount of 3222debug output. However, the string function in question (UtPrintString) is 3223now used for the disassembler also, where 256 bytes is insufficient. 3224Reported by RehabMan@GitHub. 3225 3226iASL/DataTables: Fixed some problems and issues with compilation of DMAR 3227tables. ACPICA BZ 999. Lv Zheng. 3228 3229iASL: Fixed a couple of error exit issues that could result in a "Could 3230not delete <file>" message during ASL compilation. 3231 3232AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though 3233the actual signatures for these tables are "FACP" and "APIC", 3234respectively. 3235 3236AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI 3237tables are allowed to have multiple instances. 3238 3239---------------------------------------- 324017 May 2013. Summary of changes for version 20130517: 3241 32421) ACPICA kernel-resident subsystem: 3243 3244Fixed a regression introduced in version 20130328 for _INI methods. This 3245change fixes a problem introduced in 20130328 where _INI methods are no 3246longer executed properly because of a memory block that was not 3247initialized correctly. ACPICA BZ 1016. Tomasz Nowicki 3248<tomasz.nowicki@linaro.org>. 3249 3250Fixed a possible problem with the new extended sleep registers in the 3251ACPI 32525.0 FADT. Do not use these registers (even if populated) unless the HW- 3253reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ 32541020. Lv Zheng. 3255 3256Implemented return value repair code for _CST predefined objects: Sort 3257the 3258list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng. 3259 3260Implemented a debug-only option to disable loading of SSDTs from the 3261RSDT/XSDT during ACPICA initialization. This can be useful for debugging 3262ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in 3263acglobal.h - ACPICA BZ 1005. Lv Zheng. 3264 3265Fixed some issues in the ACPICA initialization and termination code: 3266Tomasz Nowicki <tomasz.nowicki@linaro.org> 32671) Clear events initialized flag upon event component termination. ACPICA 3268BZ 1013. 32692) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018. 32703) Delete global lock pending lock during termination. ACPICA BZ 1012. 32714) Clear debug buffer global on termination to prevent possible multiple 3272delete. ACPICA BZ 1010. 3273 3274Standardized all switch() blocks across the entire source base. After 3275many 3276years, different formatting for switch() had crept in. This change makes 3277the formatting of every switch block identical. ACPICA BZ 997. Chao Guan. 3278 3279Split some files to enhance ACPICA modularity and configurability: 32801) Split buffer dump routines into utilities/utbuffer.c 32812) Split internal error message routines into utilities/uterror.c 32823) Split table print utilities into tables/tbprint.c 32834) Split iASL command-line option processing into asloptions.c 3284 3285Makefile enhancements: 32861) Support for all new files above. 32872) Abort make on errors from any subcomponent. Chao Guan. 32883) Add build support for Apple Mac OS X. Liang Qi. 3289 3290Example Code and Data Size: These are the sizes for the OS-independent 3291acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3292debug version of the code includes the debug output trace mechanism and 3293has a much larger code and data size. 3294 3295 Current Release: 3296 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 3297 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 3298 Previous Release: 3299 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 3300 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 3301 3302 33032) iASL Compiler/Disassembler and Tools: 3304 3305New utility: Implemented an easily portable version of the acpidump 3306utility to extract ACPI tables from the system (or a file) in an ASCII 3307hex 3308dump format. The top-level code implements the various command line 3309options, file I/O, and table dump routines. To port to a new host, only 3310three functions need to be implemented to get tables -- since this 3311functionality is OS-dependent. See the tools/acpidump/apmain.c module and 3312the ACPICA reference for porting instructions. ACPICA BZ 859. Notes: 33131) The Windows version obtains the ACPI tables from the Registry. 33142) The Linux version is under development. 33153) Other hosts - If an OS-dependent module is submitted, it will be 3316distributed with ACPICA. 3317 3318iASL: Fixed a regression for -D preprocessor option (define symbol). A 3319restructuring/change to the initialization sequence caused this option to 3320no longer work properly. 3321 3322iASL: Implemented a mechanism to disable specific warnings and remarks. 3323Adds a new command line option, "-vw <messageid> as well as "#pragma 3324disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore. 3325 3326iASL: Fix for too-strict package object validation. The package object 3327validation for return values from the predefined names is a bit too 3328strict, it does not allow names references within the package (which will 3329be resolved at runtime.) These types of references cannot be validated at 3330compile time. This change ignores named references within package objects 3331for names that return or define static packages. 3332 3333Debugger: Fixed the 80-character command line limitation for the History 3334command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan. 3335 3336iASL: Added control method and package support for the -so option 3337(generates AML offset table for BIOS support.) 3338 3339iASL: issue a remark if a non-serialized method creates named objects. If 3340a thread blocks within the method for any reason, and another thread 3341enters the method, the method will fail because an attempt will be made 3342to 3343create the same (named) object twice. In this case, issue a remark that 3344the method should be marked serialized. NOTE: may become a warning later. 3345ACPICA BZ 909. 3346 3347---------------------------------------- 334818 April 2013. Summary of changes for version 20130418: 3349 33501) ACPICA kernel-resident subsystem: 3351 3352Fixed a possible buffer overrun during some rare but specific field unit 3353read operations. This overrun can only happen if the DSDT version is 1 -- 3354meaning that all AML integers are 32 bits -- and the field length is 3355between 33 and 55 bits long. During the read, an internal buffer object 3356is 3357created for the field unit because the field is larger than an integer 3358(32 3359bits). However, in this case, the buffer will be incorrectly written 3360beyond the end because the buffer length is less than the internal 3361minimum 3362of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes 3363long, but a full 8 bytes will be written. 3364 3365Updated the Embedded Controller "orphan" _REG method support. This refers 3366to _REG methods under the EC device that have no corresponding operation 3367region. This is allowed by the ACPI specification. This update removes a 3368dependency on the existence an ECDT table. It will execute an orphan _REG 3369method as long as the operation region handler for the EC is installed at 3370the EC device node and not the namespace root. Rui Zhang (original 3371update), Bob Moore (update/integrate). 3372 3373Implemented run-time argument typechecking for all predefined ACPI names 3374(_STA, _BIF, etc.) This change performs object typechecking on all 3375incoming arguments for all predefined names executed via 3376AcpiEvaluateObject. This ensures that ACPI-related device drivers are 3377passing correct object types as well as the correct number of arguments 3378(therefore identifying any issues immediately). Also, the ASL/namespace 3379definition of the predefined name is checked against the ACPI 3380specification for the proper argument count. Adds one new file, 3381nsarguments.c 3382 3383Changed an exception code for the ASL UnLoad() operator. Changed the 3384exception code for the case where the input DdbHandle is invalid, from 3385AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE. 3386 3387Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the 3388global makefile. The use of this flag causes compiler errors on earlier 3389versions of GCC, so it has been removed for compatibility. 3390 3391Miscellaneous cleanup: 33921) Removed some unused/obsolete macros 33932) Fixed a possible memory leak in the _OSI support 33943) Removed an unused variable in the predefined name support 33954) Windows OSL: remove obsolete reference to a memory list field 3396 3397Example Code and Data Size: These are the sizes for the OS-independent 3398acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3399debug version of the code includes the debug output trace mechanism and 3400has a much larger code and data size. 3401 3402 Current Release: 3403 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 3404 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 3405 Previous Release: 3406 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 3407 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 3408 3409 34102) iASL Compiler/Disassembler and Tools: 3411 3412AcpiExec: Added installation of a handler for the SystemCMOS address 3413space. This prevents control method abort if a method accesses this 3414space. 3415 3416AcpiExec: Added support for multiple EC devices, and now install EC 3417operation region handler(s) at the actual EC device instead of the 3418namespace root. This reflects the typical behavior of host operating 3419systems. 3420 3421AcpiExec: Updated to ensure that all operation region handlers are 3422installed before the _REG methods are executed. This prevents a _REG 3423method from aborting if it accesses an address space has no handler. 3424AcpiExec installs a handler for every possible address space. 3425 3426Debugger: Enhanced the "handlers" command to display non-root handlers. 3427This change enhances the handlers command to display handlers associated 3428with individual devices throughout the namespace, in addition to the 3429currently supported display of handlers associated with the root 3430namespace 3431node. 3432 3433ASL Test Suite: Several test suite errors have been identified and 3434resolved, reducing the total error count during execution. Chao Guan. 3435 3436---------------------------------------- 343728 March 2013. Summary of changes for version 20130328: 3438 34391) ACPICA kernel-resident subsystem: 3440 3441Fixed several possible race conditions with the internal object reference 3442counting mechanism. Some of the external ACPICA interfaces update object 3443reference counts without holding the interpreter or namespace lock. This 3444change adds a spinlock to protect reference count updates on the internal 3445ACPICA objects. Reported by and with assistance from Andriy Gapon 3446(avg@FreeBSD.org). 3447 3448FADT support: Removed an extraneous warning for very large GPE register 3449sets. This change removes a size mismatch warning if the legacy length 3450field for a GPE register set is larger than the 64-bit GAS structure can 3451accommodate. GPE register sets can be larger than the 255-bit width 3452limitation of the GAS structure. Linn Crosetto (linn@hp.com). 3453 3454_OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error 3455return from this interface. Handles a possible timeout case if 3456ACPI_WAIT_FOREVER is modified by the host to be a value less than 3457"forever". Jung-uk Kim. 3458 3459Predefined name support: Add allowed/required argument type information 3460to 3461the master predefined info table. This change adds the infrastructure to 3462enable typechecking on incoming arguments for all predefined 3463methods/objects. It does not actually contain the code that will fully 3464utilize this information, this is still under development. Also condenses 3465some duplicate code for the predefined names into a new module, 3466utilities/utpredef.c 3467 3468Example Code and Data Size: These are the sizes for the OS-independent 3469acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3470debug version of the code includes the debug output trace mechanism and 3471has a much larger code and data size. 3472 3473 Previous Release: 3474 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 3475 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 3476 Current Release: 3477 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 3478 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 3479 3480 34812) iASL Compiler/Disassembler and Tools: 3482 3483iASL: Implemented a new option to simplify the development of ACPI- 3484related 3485BIOS code. Adds support for a new "offset table" output file. The -so 3486option will create a C table containing the AML table offsets of various 3487named objects in the namespace so that BIOS code can modify them easily 3488at 3489boot time. This can simplify BIOS runtime code by eliminating expensive 3490searches for "magic values", enhancing boot times and adding greater 3491reliability. With assistance from Lee Hamel. 3492 3493iASL: Allow additional predefined names to return zero-length packages. 3494Now, all predefined names that are defined by the ACPI specification to 3495return a "variable-length package of packages" are allowed to return a 3496zero length top-level package. This allows the BIOS to tell the host that 3497the requested feature is not supported, and supports existing BIOS/ASL 3498code and practices. 3499 3500iASL: Changed the "result not used" warning to an error. This is the case 3501where an ASL operator is effectively a NOOP because the result of the 3502operation is not stored anywhere. For example: 3503 Add (4, Local0) 3504There is no target (missing 3rd argument), nor is the function return 3505value used. This is potentially a very serious problem -- since the code 3506was probably intended to do something, but for whatever reason, the value 3507was not stored. Therefore, this issue has been upgraded from a warning to 3508an error. 3509 3510AcpiHelp: Added allowable/required argument types to the predefined names 3511info display. This feature utilizes the recent update to the predefined 3512names table (above). 3513 3514---------------------------------------- 351514 February 2013. Summary of changes for version 20130214: 3516 35171) ACPICA Kernel-resident Subsystem: 3518 3519Fixed a possible regression on some hosts: Reinstated the safe return 3520macros (return_ACPI_STATUS, etc.) that ensure that the argument is 3521evaluated only once. Although these macros are not needed for the ACPICA 3522code itself, they are often used by ACPI-related host device drivers 3523where 3524the safe feature may be necessary. 3525 3526Fixed several issues related to the ACPI 5.0 reduced hardware support 3527(SOC): Now ensure that if the platform declares itself as hardware- 3528reduced 3529via the FADT, the following functions become NOOPs (and always return 3530AE_OK) because ACPI is always enabled by definition on these machines: 3531 AcpiEnable 3532 AcpiDisable 3533 AcpiHwGetMode 3534 AcpiHwSetMode 3535 3536Dynamic Object Repair: Implemented additional runtime repairs for 3537predefined name return values. Both of these repairs can simplify code in 3538the related device drivers that invoke these methods: 35391) For the _STR and _MLS names, automatically repair/convert an ASCII 3540string to a Unicode buffer. 35412) For the _CRS, _PRS, and _DMA names, return a resource descriptor with 3542a 3543lone end tag descriptor in the following cases: A Return(0) was executed, 3544a null buffer was returned, or no object at all was returned (non-slack 3545mode only). Adds a new file, nsconvert.c 3546ACPICA BZ 998. Bob Moore, Lv Zheng. 3547 3548Resource Manager: Added additional code to prevent possible infinite 3549loops 3550while traversing corrupted or ill-formed resource template buffers. Check 3551for zero-length resource descriptors in all code that loops through 3552resource templates (the length field is used to index through the 3553template). This change also hardens the external AcpiWalkResources and 3554AcpiWalkResourceBuffer interfaces. 3555 3556Local Cache Manager: Enhanced the main data structure to eliminate an 3557unnecessary mechanism to access the next object in the list. Actually 3558provides a small performance enhancement for hosts that use the local 3559ACPICA cache manager. Jung-uk Kim. 3560 3561Example Code and Data Size: These are the sizes for the OS-independent 3562acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3563debug version of the code includes the debug output trace mechanism and 3564has a much larger code and data size. 3565 3566 Previous Release: 3567 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 3568 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 3569 Current Release: 3570 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 3571 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 3572 3573 35742) iASL Compiler/Disassembler and Tools: 3575 3576iASL/Disassembler: Fixed several issues with the definition of the ACPI 35775.0 RASF table (RAS Feature Table). This change incorporates late changes 3578that were made to the ACPI 5.0 specification. 3579 3580iASL/Disassembler: Added full support for the following new ACPI tables: 3581 1) The MTMR table (MID Timer Table) 3582 2) The VRTC table (Virtual Real Time Clock Table). 3583Includes header file, disassembler, table compiler, and template support 3584for both tables. 3585 3586iASL: Implemented compile-time validation of package objects returned by 3587predefined names. This new feature validates static package objects 3588returned by the various predefined names defined to return packages. Both 3589object types and package lengths are validated, for both parent packages 3590and sub-packages, if any. The code is similar in structure and behavior 3591to 3592the runtime repair mechanism within the AML interpreter and uses the 3593existing predefined name information table. Adds a new file, aslprepkg.c. 3594ACPICA BZ 938. 3595 3596iASL: Implemented auto-detection of binary ACPI tables for disassembly. 3597This feature detects a binary file with a valid ACPI table header and 3598invokes the disassembler automatically. Eliminates the need to 3599specifically invoke the disassembler with the -d option. ACPICA BZ 862. 3600 3601iASL/Disassembler: Added several warnings for the case where there are 3602unresolved control methods during the disassembly. This can potentially 3603cause errors when the output file is compiled, because the disassembler 3604assumes zero method arguments in these cases (it cannot determine the 3605actual number of arguments without resolution/definition of the method). 3606 3607Debugger: Added support to display all resources with a single command. 3608Invocation of the resources command with no arguments will now display 3609all 3610resources within the current namespace. 3611 3612AcpiHelp: Added descriptive text for each ACPICA exception code displayed 3613via the -e option. 3614 3615---------------------------------------- 361617 January 2013. Summary of changes for version 20130117: 3617 36181) ACPICA Kernel-resident Subsystem: 3619 3620Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to 3621return either 1 or 2 integers. Although the ACPI spec defines the \_Sx 3622objects to return a package containing one integer, most BIOS code 3623returns 3624two integers and the previous code reflects that. However, we also need 3625to 3626support BIOS code that actually implements to the ACPI spec, and this 3627change reflects this. 3628 3629Fixed two issues with the ACPI_DEBUG_PRINT macros: 36301) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for 3631C compilers that require this support. 36322) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since 3633ACPI_DEBUG is already used by many of the various hosts. 3634 3635Updated all ACPICA copyrights and signons to 2013. Added the 2013 3636copyright to all module headers and signons, including the standard Linux 3637header. This affects virtually every file in the ACPICA core subsystem, 3638iASL compiler, all ACPICA utilities, and the test suites. 3639 3640Example Code and Data Size: These are the sizes for the OS-independent 3641acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3642debug version of the code includes the debug output trace mechanism and 3643has a much larger code and data size. 3644 3645 Previous Release: 3646 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 3647 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 3648 Current Release: 3649 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 3650 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 3651 3652 36532) iASL Compiler/Disassembler and Tools: 3654 3655Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and 3656prevent a possible fault on some hosts. Some C libraries modify the arg 3657pointer parameter to vfprintf making it difficult to call it twice in the 3658AcpiOsVprintf function. Use a local buffer to workaround this issue. This 3659does not affect the Windows OSL since the Win C library does not modify 3660the arg pointer. Chao Guan, Bob Moore. 3661 3662iASL: Fixed a possible infinite loop when the maximum error count is 3663reached. If an output file other than the .AML file is specified (such as 3664a listing file), and the maximum number of errors is reached, do not 3665attempt to flush data to the output file(s) as the compiler is aborting. 3666This can cause an infinite loop as the max error count code essentially 3667keeps calling itself. 3668 3669iASL/Disassembler: Added an option (-in) to ignore NOOP 3670opcodes/operators. 3671Implemented for both the compiler and the disassembler. Often, the NOOP 3672opcode is used as padding for packages that are changed dynamically by 3673the 3674BIOS. When disassembled and recompiled, these NOOPs will cause syntax 3675errors. This option causes the disassembler to ignore all NOOP opcodes 3676(0xA3), and it also causes the compiler to ignore all ASL source code 3677NOOP 3678statements as well. 3679 3680Debugger: Enhanced the Sleep command to execute all sleep states. This 3681change allows Sleep to be invoked with no arguments and causes the 3682debugger to execute all of the sleep states, 0-5, automatically. 3683 3684---------------------------------------- 368520 December 2012. Summary of changes for version 20121220: 3686 36871) ACPICA Kernel-resident Subsystem: 3688 3689Implemented a new interface, AcpiWalkResourceBuffer. This interface is an 3690alternate entry point for AcpiWalkResources and improves the usability of 3691the resource manager by accepting as input a buffer containing the output 3692of either a _CRS, _PRS, or _AEI method. The key functionality is that the 3693input buffer is not deleted by this interface so that it can be used by 3694the host later. See the ACPICA reference for details. 3695 3696Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table 3697(DSDT version < 2). The constant will be truncated and this warning 3698reflects that behavior. 3699 3700Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ, 3701ExtendedInterrupt, and GpioInt descriptors. This change adds support to 3702both get and set the new wake bit in these descriptors, separately from 3703the existing share bit. Reported by Aaron Lu. 3704 3705Interpreter: Fix Store() when an implicit conversion is not possible. For 3706example, in the cases such as a store of a string to an existing package 3707object, implement the store as a CopyObject(). This is a small departure 3708from the ACPI specification which states that the control method should 3709be 3710aborted in this case. However, the ASLTS suite depends on this behavior. 3711 3712Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT 3713macros: check if debug output is currently enabled as soon as possible to 3714minimize performance impact if debug is in fact not enabled. 3715 3716Source code restructuring: Cleanup to improve modularity. The following 3717new files have been added: dbconvert.c, evhandler.c, nsprepkg.c, 3718psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c. 3719Associated makefiles and project files have been updated. 3720 3721Changed an exception code for LoadTable operator. For the case where one 3722of the input strings is too long, change the returned exception code from 3723AE_BAD_PARAMETER to AE_AML_STRING_LIMIT. 3724 3725Fixed a possible memory leak in dispatcher error path. On error, delete 3726the mutex object created during method mutex creation. Reported by 3727tim.gardner@canonical.com. 3728 3729Example Code and Data Size: These are the sizes for the OS-independent 3730acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3731debug version of the code includes the debug output trace mechanism and 3732has a much larger code and data size. 3733 3734 Previous Release: 3735 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 3736 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 3737 Current Release: 3738 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 3739 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 3740 3741 37422) iASL Compiler/Disassembler and Tools: 3743 3744iASL: Disallow a method call as argument to the ObjectType ASL operator. 3745This change tracks an errata to the ACPI 5.0 document. The AML grammar 3746will not allow the interpreter to differentiate between a method and a 3747method invocation when these are used as an argument to the ObjectType 3748operator. The ACPI specification change is to disallow a method 3749invocation 3750(UserTerm) for the ObjectType operator. 3751 3752Finish support for the TPM2 and CSRT tables in the headers, table 3753compiler, and disassembler. 3754 3755Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout 3756always expires immediately if the semaphore is not available. The 3757original 3758code was using a relative-time timeout, but sem_timedwait requires the 3759use 3760of an absolute time. 3761 3762iASL: Added a remark if the Timer() operator is used within a 32-bit 3763table. This operator returns a 64-bit time value that will be truncated 3764within a 32-bit table. 3765 3766iASL Source code restructuring: Cleanup to improve modularity. The 3767following new files have been added: aslhex.c, aslxref.c, aslnamesp.c, 3768aslmethod.c, and aslfileio.c. Associated makefiles and project files have 3769been updated. 3770 3771 3772---------------------------------------- 377314 November 2012. Summary of changes for version 20121114: 3774 37751) ACPICA Kernel-resident Subsystem: 3776 3777Implemented a performance enhancement for ACPI/AML Package objects. This 3778change greatly increases the performance of Package objects within the 3779interpreter. It changes the processing of reference counts for packages 3780by 3781optimizing for the most common case where the package sub-objects are 3782either Integers, Strings, or Buffers. Increases the overall performance 3783of 3784the ASLTS test suite by 1.5X (Increases the Slack Mode performance by 37852X.) 3786Chao Guan. ACPICA BZ 943. 3787 3788Implemented and deployed common macros to extract flag bits from resource 3789descriptors. Improves readability and maintainability of the code. Fixes 3790a 3791problem with the UART serial bus descriptor for the number of data bits 3792flags (was incorrectly 2 bits, should be 3). 3793 3794Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation 3795of the macros and changed the SETx macros to the style of (destination, 3796source). Also added ACPI_CASTx companion macros. Lv Zheng. 3797 3798Example Code and Data Size: These are the sizes for the OS-independent 3799acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3800debug version of the code includes the debug output trace mechanism and 3801has a much larger code and data size. 3802 3803 Previous Release: 3804 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 3805 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 3806 Current Release: 3807 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 3808 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 3809 3810 38112) iASL Compiler/Disassembler and Tools: 3812 3813Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change 3814adds the ShareAndWake and ExclusiveAndWake flags which were added to the 3815Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986. 3816 3817Disassembler: Fixed a problem with external declaration generation. Fixes 3818a problem where an incorrect pathname could be generated for an external 3819declaration if the original reference to the object includes leading 3820carats (^). ACPICA BZ 984. 3821 3822Debugger: Completed a major update for the Disassemble<method> command. 3823This command was out-of-date and did not properly disassemble control 3824methods that had any reasonable complexity. This fix brings the command 3825up 3826to the same level as the rest of the disassembler. Adds one new file, 3827dmdeferred.c, which is existing code that is now common with the main 3828disassembler and the debugger disassemble command. ACPICA MZ 978. 3829 3830iASL: Moved the parser entry prototype to avoid a duplicate declaration. 3831Newer versions of Bison emit this prototype, so moved the prototype out 3832of 3833the iASL header to where it is actually used in order to avoid a 3834duplicate 3835declaration. 3836 3837iASL/Tools: Standardized use of the stream I/O functions: 3838 1) Ensure check for I/O error after every fopen/fread/fwrite 3839 2) Ensure proper order of size/count arguments for fread/fwrite 3840 3) Use test of (Actual != Requested) after all fwrite, and most fread 3841 4) Standardize I/O error messages 3842Improves reliability and maintainability of the code. Bob Moore, Lv 3843Zheng. 3844ACPICA BZ 981. 3845 3846Disassembler: Prevent duplicate External() statements. During generation 3847of external statements, detect similar pathnames that are actually 3848duplicates such as these: 3849 External (\ABCD) 3850 External (ABCD) 3851Remove all leading '\' characters from pathnames during the external 3852statement generation so that duplicates will be detected and tossed. 3853ACPICA BZ 985. 3854 3855Tools: Replace low-level I/O with stream I/O functions. Replace 3856open/read/write/close with the stream I/O equivalents 3857fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob 3858Moore. 3859 3860AcpiBin: Fix for the dump-to-hex function. Now correctly output the table 3861name header so that AcpiXtract recognizes the output file/table. 3862 3863iASL: Remove obsolete -2 option flag. Originally intended to force the 3864compiler/disassembler into an ACPI 2.0 mode, this was never implemented 3865and the entire concept is now obsolete. 3866 3867---------------------------------------- 386818 October 2012. Summary of changes for version 20121018: 3869 3870 38711) ACPICA Kernel-resident Subsystem: 3872 3873Updated support for the ACPI 5.0 MPST table. Fixes some problems 3874introduced by late changes to the table as it was added to the ACPI 5.0 3875specification. Includes header, disassembler, and data table compiler 3876support as well as a new version of the MPST template. 3877 3878AcpiGetObjectInfo: Enhanced the device object support to include the ACPI 38795.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID 3880methods: _HID, _CID, and _UID. 3881 3882Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed 3883ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent 3884name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId) 3885names for their various drivers. Affects the AcpiGetObjectInfo external 3886interface, and other internal interfaces as well. 3887 3888Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME. 3889This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME 3890on machines that support non-aligned transfers. Optimizes for this case 3891rather than using a strncpy. With assistance from Zheng Lv. 3892 3893Resource Manager: Small fix for buffer size calculation. Fixed a one byte 3894error in the output buffer calculation. Feng Tang. ACPICA BZ 849. 3895 3896Added a new debug print message for AML mutex objects that are force- 3897released. At control method termination, any currently acquired mutex 3898objects are force-released. Adds a new debug-only message for each one 3899that is released. 3900 3901Audited/updated all ACPICA return macros and the function debug depth 3902counter: 1) Ensure that all functions that use the various TRACE macros 3903also use the appropriate ACPICA return macros. 2) Ensure that all normal 3904return statements surround the return expression (value) with parens to 3905ensure consistency across the ACPICA code base. Guan Chao, Tang Feng, 3906Zheng Lv, Bob Moore. ACPICA Bugzilla 972. 3907 3908Global source code changes/maintenance: All extra lines at the start and 3909end of each source file have been removed for consistency. Also, within 3910comments, all new sentences start with a single space instead of a double 3911space, again for consistency across the code base. 3912 3913Example Code and Data Size: These are the sizes for the OS-independent 3914acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3915debug version of the code includes the debug output trace mechanism and 3916has a much larger code and data size. 3917 3918 Previous Release: 3919 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 3920 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 3921 Current Release: 3922 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 3923 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 3924 3925 39262) iASL Compiler/Disassembler and Tools: 3927 3928AcpiExec: Improved the algorithm used for memory leak/corruption 3929detection. Added some intelligence to the code that maintains the global 3930list of allocated memory. The list is now ordered by allocated memory 3931address, significantly improving performance. When running AcpiExec on 3932the ASLTS test suite, speed improvements of 3X to 5X are seen, depending 3933on the platform and/or the environment. Note, this performance 3934enhancement affects the AcpiExec utility only, not the kernel-resident 3935ACPICA code. 3936 3937Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For 3938the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix 3939incorrect table offset reported for invalid opcodes. Report the original 394032-bit value for bad ACPI_NAMEs (as well as the repaired name.) 3941 3942Disassembler: Enhanced the -vt option to emit the binary table data in 3943hex format to assist with debugging. 3944 3945Fixed a potential filename buffer overflow in osunixdir.c. Increased the 3946size of file structure. Colin Ian King. 3947 3948---------------------------------------- 394913 September 2012. Summary of changes for version 20120913: 3950 3951 39521) ACPICA Kernel-resident Subsystem: 3953 3954ACPI 5.0: Added two new notify types for the Hardware Error Notification 3955Structure within the Hardware Error Source Table (HEST) table -- CMCI(5) 3956and 3957MCE(6). 3958 3959Table Manager: Merged/removed duplicate code in the root table resize 3960functions. One function is external, the other is internal. Lv Zheng, 3961ACPICA 3962BZ 846. 3963 3964Makefiles: Completely removed the obsolete "Linux" makefiles under 3965acpica/generate/linux. These makefiles are obsolete and have been 3966replaced 3967by 3968the generic unix makefiles under acpica/generate/unix. 3969 3970Makefiles: Ensure that binary files always copied properly. Minor rule 3971change 3972to ensure that the final binary output files are always copied up to the 3973appropriate binary directory (bin32 or bin64.) 3974 3975Example Code and Data Size: These are the sizes for the OS-independent 3976acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3977debug 3978version of the code includes the debug output trace mechanism and has a 3979much 3980larger code and data size. 3981 3982 Previous Release: 3983 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 3984 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 3985 Current Release: 3986 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 3987 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 3988 3989 39902) iASL Compiler/Disassembler and Tools: 3991 3992Disassembler: Fixed a possible fault during the disassembly of resource 3993descriptors when a second parse is required because of the invocation of 3994external control methods within the table. With assistance from 3995adq@lidskialf.net. ACPICA BZ 976. 3996 3997iASL: Fixed a namepath optimization problem. An error can occur if the 3998parse 3999node that contains the namepath to be optimized does not have a parent 4000node 4001that is a named object. This change fixes the problem. 4002 4003iASL: Fixed a regression where the AML file is not deleted on errors. The 4004AML 4005output file should be deleted if there are any errors during the 4006compiler. 4007The 4008only exception is if the -f (force output) option is used. ACPICA BZ 974. 4009 4010iASL: Added a feature to automatically increase internal line buffer 4011sizes. 4012Via realloc(), automatically increase the internal line buffer sizes as 4013necessary to support very long source code lines. The current version of 4014the 4015preprocessor requires a buffer long enough to contain full source code 4016lines. 4017This change increases the line buffer(s) if the input lines go beyond the 4018current buffer size. This eliminates errors that occurred when a source 4019code 4020line was longer than the buffer. 4021 4022iASL: Fixed a problem with constant folding in method declarations. The 4023SyncLevel term is a ByteConstExpr, and incorrect code would be generated 4024if a 4025Type3 opcode was used. 4026 4027Debugger: Improved command help support. For incorrect argument count, 4028display 4029full help for the command. For help command itself, allow an argument to 4030specify a command. 4031 4032Test Suites: Several bug fixes for the ASLTS suite reduces the number of 4033errors during execution of the suite. Guan Chao. 4034 4035---------------------------------------- 403616 August 2012. Summary of changes for version 20120816: 4037 4038 40391) ACPICA Kernel-resident Subsystem: 4040 4041Removed all use of the deprecated _GTS and _BFS predefined methods. The 4042_GTS 4043(Going To Sleep) and _BFS (Back From Sleep) methods are essentially 4044deprecated and will probably be removed from the ACPI specification. 4045Windows 4046does not invoke them, and reportedly never will. The final nail in the 4047coffin 4048is that the ACPI specification states that these methods must be run with 4049interrupts off, which is not going to happen in a kernel interpreter. 4050Note: 4051Linux has removed all use of the methods also. It was discovered that 4052invoking these functions caused failures on some machines, probably 4053because 4054they were never tested since Windows does not call them. Affects two 4055external 4056interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng. 4057ACPICA BZ 969. 4058 4059Implemented support for complex bit-packed buffers returned from the _PLD 4060(Physical Location of Device) predefined method. Adds a new external 4061interface, AcpiDecodePldBuffer that parses the buffer into a more usable 4062C 4063structure. Note: C Bitfields cannot be used for this type of predefined 4064structure since the memory layout of individual bitfields is not defined 4065by 4066the C language. In addition, there are endian concerns where a compiler 4067will 4068change the bitfield ordering based on the machine type. The new ACPICA 4069interface eliminates these issues, and should be called after _PLD is 4070executed. ACPICA BZ 954. 4071 4072Implemented a change to allow a scope change to root (via "Scope (\)") 4073during 4074execution of module-level ASL code (code that is executed at table load 4075time.) Lin Ming. 4076 4077Added the Windows8/Server2012 string for the _OSI method. This change 4078adds 4079a 4080new _OSI string, "Windows 2012" for both Windows 8 and Windows Server 40812012. 4082 4083Added header support for the new ACPI tables DBG2 (Debug Port Table Type 40842) 4085and CSRT (Core System Resource Table). 4086 4087Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined 4088names. This simplifies access to the buffers returned by these predefined 4089names. Adds a new file, include/acbuffer.h. ACPICA BZ 956. 4090 4091GPE support: Removed an extraneous parameter from the various low-level 4092internal GPE functions. Tang Feng. 4093 4094Removed the linux makefiles from the unix packages. The generate/linux 4095makefiles are obsolete and have been removed from the unix tarball 4096release 4097packages. The replacement makefiles are under generate/unix, and there is 4098a 4099top-level makefile under the main acpica directory. ACPICA BZ 967, 912. 4100 4101Updates for Unix makefiles: 41021) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven. 41032) Update linker flags (move to end of command line) for AcpiExec 4104utility. 4105Guan Chao. 4106 4107Split ACPICA initialization functions to new file, utxfinit.c. Split from 4108utxface.c to improve modularity and reduce file size. 4109 4110Example Code and Data Size: These are the sizes for the OS-independent 4111acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4112debug version of the code includes the debug output trace mechanism and 4113has a 4114much larger code and data size. 4115 4116 Previous Release: 4117 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 4118 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 4119 Current Release: 4120 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 4121 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 4122 4123 41242) iASL Compiler/Disassembler and Tools: 4125 4126iASL: Fixed a problem with constant folding for fixed-length constant 4127expressions. The constant-folding code was not being invoked for constant 4128expressions that allow the use of type 3/4/5 opcodes to generate 4129constants 4130for expressions such as ByteConstExpr, WordConstExpr, etc. This could 4131result 4132in the generation of invalid AML bytecode. ACPICA BZ 970. 4133 4134iASL: Fixed a generation issue on newer versions of Bison. Newer versions 4135apparently automatically emit some of the necessary externals. This 4136change 4137handles these versions in order to eliminate generation warnings. 4138 4139Disassembler: Added support to decode the DBG2 and CSRT ACPI tables. 4140 4141Disassembler: Add support to decode _PLD buffers. The decoded buffer 4142appears 4143within comments in the output file. 4144 4145Debugger: Fixed a regression with the "Threads" command where 4146AE_BAD_PARAMETER was always returned. 4147 4148---------------------------------------- 414911 July 2012. Summary of changes for version 20120711: 4150 41511) ACPICA Kernel-resident Subsystem: 4152 4153Fixed a possible fault in the return package object repair code. Fixes a 4154problem that can occur when a lone package object is wrapped with an 4155outer 4156package object in order to force conformance to the ACPI specification. 4157Can 4158affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, 4159_DLM, 4160_CSD, _PSD, _TSD. 4161 4162Removed code to disable/enable bus master arbitration (ARB_DIS bit in the 4163PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the 4164ARB_DIS bit must be implemented in the host-dependent C3 processor power 4165state 4166support. Note, ARB_DIS is obsolete and only applies to older chipsets, 4167both 4168Intel and other vendors. (for Intel: ICH4-M and earlier) 4169 4170This change removes the code to disable/enable bus master arbitration 4171during 4172suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register 4173causes 4174resume problems on some machines. The change has been in use for over 4175seven 4176years within Linux. 4177 4178Implemented two new external interfaces to support host-directed dynamic 4179ACPI 4180table load and unload. They are intended to simplify the host 4181implementation 4182of hot-plug support: 4183 AcpiLoadTable: Load an SSDT from a buffer into the namespace. 4184 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the 4185table. 4186See the ACPICA reference for additional details. Adds one new file, 4187components/tables/tbxfload.c 4188 4189Implemented and deployed two new interfaces for errors and warnings that 4190are 4191known to be caused by BIOS/firmware issues: 4192 AcpiBiosError: Prints "ACPI Firmware Error" message. 4193 AcpiBiosWarning: Prints "ACPI Firmware Warning" message. 4194Deployed these new interfaces in the ACPICA Table Manager code for ACPI 4195table 4196and FADT errors. Additional deployment to be completed as appropriate in 4197the 4198future. The associated conditional macros are ACPI_BIOS_ERROR and 4199ACPI_BIOS_WARNING. See the ACPICA reference for additional details. 4200ACPICA 4201BZ 4202843. 4203 4204Implicit notify support: ensure that no memory allocation occurs within a 4205critical region. This fix moves a memory allocation outside of the time 4206that a 4207spinlock is held. Fixes issues on systems that do not allow this 4208behavior. 4209Jung-uk Kim. 4210 4211Split exception code utilities and tables into a new file, 4212utilities/utexcep.c 4213 4214Example Code and Data Size: These are the sizes for the OS-independent 4215acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4216debug 4217version of the code includes the debug output trace mechanism and has a 4218much 4219larger code and data size. 4220 4221 Previous Release: 4222 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 4223 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 4224 Current Release: 4225 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 4226 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 4227 4228 42292) iASL Compiler/Disassembler and Tools: 4230 4231iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead 4232of 42330. Jung-uk Kim. 4234 4235Debugger: Enhanced the "tables" command to emit additional information 4236about 4237the current set of ACPI tables, including the owner ID and flags decode. 4238 4239Debugger: Reimplemented the "unload" command to use the new 4240AcpiUnloadParentTable external interface. This command was disable 4241previously 4242due to need for an unload interface. 4243 4244AcpiHelp: Added a new option to decode ACPICA exception codes. The -e 4245option 4246will decode 16-bit hex status codes (ACPI_STATUS) to name strings. 4247 4248---------------------------------------- 424920 June 2012. Summary of changes for version 20120620: 4250 4251 42521) ACPICA Kernel-resident Subsystem: 4253 4254Implemented support to expand the "implicit notify" feature to allow 4255multiple 4256devices to be notified by a single GPE. This feature automatically 4257generates a 4258runtime device notification in the absence of a BIOS-provided GPE control 4259method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit 4260notify is 4261provided by ACPICA for Windows compatibility, and is a workaround for 4262BIOS 4263AML 4264code errors. See the description of the AcpiSetupGpeForWake interface in 4265the 4266APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 4267 4268Changed some comments and internal function names to simplify and ensure 4269correctness of the Linux code translation. No functional changes. 4270 4271Example Code and Data Size: These are the sizes for the OS-independent 4272acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4273debug 4274version of the code includes the debug output trace mechanism and has a 4275much 4276larger code and data size. 4277 4278 Previous Release: 4279 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 4280 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 4281 Current Release: 4282 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 4283 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 4284 4285 42862) iASL Compiler/Disassembler and Tools: 4287 4288Disassembler: Added support to emit short, commented descriptions for the 4289ACPI 4290predefined names in order to improve the readability of the disassembled 4291output. ACPICA BZ 959. Changes include: 4292 1) Emit descriptions for all standard predefined names (_INI, _STA, 4293_PRW, 4294etc.) 4295 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 4296 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, 4297etc.) 4298 4299AcpiSrc: Fixed several long-standing Linux code translation issues. 4300Argument 4301descriptions in function headers are now translated properly to lower 4302case 4303and 4304underscores. ACPICA BZ 961. Also fixes translation problems such as 4305these: 4306(old -> new) 4307 i_aSL -> iASL 4308 00-7_f -> 00-7F 4309 16_k -> 16K 4310 local_fADT -> local_FADT 4311 execute_oSI -> execute_OSI 4312 4313iASL: Fixed a problem where null bytes were inadvertently emitted into 4314some 4315listing files. 4316 4317iASL: Added the existing debug options to the standard help screen. There 4318are 4319no longer two different help screens. ACPICA BZ 957. 4320 4321AcpiHelp: Fixed some typos in the various predefined name descriptions. 4322Also 4323expand some of the descriptions where appropriate. 4324 4325iASL: Fixed the -ot option (display compile times/statistics). Was not 4326working 4327properly for standard output; only worked for the debug file case. 4328 4329---------------------------------------- 433018 May 2012. Summary of changes for version 20120518: 4331 4332 43331) ACPICA Core Subsystem: 4334 4335Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is 4336defined 4337to block until asynchronous events such as notifies and GPEs have 4338completed. 4339Within ACPICA, it is only called before a notify or GPE handler is 4340removed/uninstalled. It also may be useful for the host OS within related 4341drivers such as the Embedded Controller driver. See the ACPICA reference 4342for 4343additional information. ACPICA BZ 868. 4344 4345ACPI Tables: Added a new error message for a possible overflow failure 4346during 4347the conversion of FADT 32-bit legacy register addresses to internal 4348common 434964- 4350bit GAS structure representation. The GAS has a one-byte "bit length" 4351field, 4352thus limiting the register length to 255 bits. ACPICA BZ 953. 4353 4354Example Code and Data Size: These are the sizes for the OS-independent 4355acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4356debug 4357version of the code includes the debug output trace mechanism and has a 4358much 4359larger code and data size. 4360 4361 Previous Release: 4362 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 4363 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 4364 Current Release: 4365 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 4366 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 4367 4368 43692) iASL Compiler/Disassembler and Tools: 4370 4371iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL 4372macro. 4373This keyword was added late in the ACPI 5.0 release cycle and was not 4374implemented until now. 4375 4376Disassembler: Added support for Operation Region externals. Adds missing 4377support for operation regions that are defined in another table, and 4378referenced locally via a Field or BankField ASL operator. Now generates 4379the 4380correct External statement. 4381 4382Disassembler: Several additional fixes for the External() statement 4383generation 4384related to some ASL operators. Also, order the External() statements 4385alphabetically in the disassembler output. Fixes the External() 4386generation 4387for 4388the Create* field, Alias, and Scope operators: 4389 1) Create* buffer field operators - fix type mismatch warning on 4390disassembly 4391 2) Alias - implement missing External support 4392 3) Scope - fix to make sure all necessary externals are emitted. 4393 4394iASL: Improved pathname support. For include files, merge the prefix 4395pathname 4396with the file pathname and eliminate unnecessary components. Convert 4397backslashes in all pathnames to forward slashes, for readability. Include 4398file 4399pathname changes affect both #include and Include() type operators. 4400 4401iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the 4402end 4403of a valid line by inserting a newline and then returning the EOF during 4404the 4405next call to GetNextLine. Prevents the line from being ignored due to EOF 4406condition. 4407 4408iASL: Implemented some changes to enhance the IDE support (-vi option.) 4409Error 4410and Warning messages are now correctly recognized for both the source 4411code 4412browser and the global error and warning counts. 4413 4414---------------------------------------- 441520 April 2012. Summary of changes for version 20120420: 4416 4417 44181) ACPICA Core Subsystem: 4419 4420Implemented support for multiple notify handlers. This change adds 4421support 4422to 4423allow multiple system and device notify handlers on Device, Thermal Zone, 4424and 4425Processor objects. This can simplify the host OS notification 4426implementation. 4427Also re-worked and restructured the entire notify support code to 4428simplify 4429handler installation, handler removal, notify event queuing, and notify 4430dispatch to handler(s). Note: there can still only be two global notify 4431handlers - one for system notifies and one for device notifies. There are 4432no 4433changes to the existing handler install/remove interfaces. Lin Ming, Bob 4434Moore, Rafael Wysocki. 4435 4436Fixed a regression in the package repair code where the object reference 4437count was calculated incorrectly. Regression was introduced in the commit 4438"Support to add Package wrappers". 4439 4440Fixed a couple possible memory leaks in the AML parser, in the error 4441recovery 4442path. Jesper Juhl, Lin Ming. 4443 4444Example Code and Data Size: These are the sizes for the OS-independent 4445acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4446debug version of the code includes the debug output trace mechanism and 4447has a 4448much larger code and data size. 4449 4450 Previous Release: 4451 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 4452 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 4453 Current Release: 4454 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 4455 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 4456 4457 44582) iASL Compiler/Disassembler and Tools: 4459 4460iASL: Fixed a problem with the resource descriptor support where the 4461length 4462of the StartDependentFn and StartDependentFnNoPrio descriptors were not 4463included in cumulative descriptor offset, resulting in incorrect values 4464for 4465resource tags within resource descriptors appearing after a 4466StartDependent* 4467descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 4468 4469iASL and Preprocessor: Implemented full support for the #line directive 4470to 4471correctly track original source file line numbers through the .i 4472preprocessor 4473output file - for error and warning messages. 4474 4475iASL: Expand the allowable byte constants for address space IDs. 4476Previously, 4477the allowable range was 0x80-0xFF (user-defined spaces), now the range is 44780x0A-0xFF to allow for custom and new IDs without changing the compiler. 4479 4480iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 4481 4482iASL: Add option to completely disable the preprocessor (-Pn). 4483 4484iASL: Now emit all error/warning messages to standard error (stderr) by 4485default (instead of the previous stdout). 4486 4487ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). 4488Update 4489for resource descriptor offset fix above. Update/cleanup error output 4490routines. Enable and send iASL errors/warnings to an error logfile 4491(error.txt). Send all other iASL output to a logfile (compiler.txt). 4492Fixed 4493several extraneous "unrecognized operator" messages. 4494 4495---------------------------------------- 449620 March 2012. Summary of changes for version 20120320: 4497 4498 44991) ACPICA Core Subsystem: 4500 4501Enhanced the sleep/wake interfaces to optionally execute the _GTS method 4502(Going To Sleep) and the _BFS method (Back From Sleep). Windows 4503apparently 4504does not execute these methods, and therefore these methods are often 4505untested. It has been seen on some systems where the execution of these 4506methods causes errors and also prevents the machine from entering S5. It 4507is 4508therefore suggested that host operating systems do not execute these 4509methods 4510by default. In the future, perhaps these methods can be optionally 4511executed 4512based on the age of the system and/or what is the newest version of 4513Windows 4514that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState 4515and 4516AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 4517Ming. 4518 4519Fixed a problem where the length of the local/common FADT was set too 4520early. 4521The local FADT table length cannot be set to the common length until the 4522original length has been examined. There is code that checks the table 4523length 4524and sets various fields appropriately. This can affect older machines 4525with 4526early FADT versions. For example, this can cause inadvertent writes to 4527the 4528CST_CNT register. Julian Anastasov. 4529 4530Fixed a mapping issue related to a physical table override. Use the 4531deferred 4532mapping mechanism for tables loaded via the physical override OSL 4533interface. 4534This allows for early mapping before the virtual memory manager is 4535available. 4536Thomas Renninger, Bob Moore. 4537 4538Enhanced the automatic return-object repair code: Repair a common problem 4539with 4540predefined methods that are defined to return a variable-length Package 4541of 4542sub-objects. If there is only one sub-object, some BIOS ASL code 4543mistakenly 4544simply returns the single object instead of a Package with one sub- 4545object. 4546This new support will repair this error by wrapping a Package object 4547around 4548the original object, creating the correct and expected Package with one 4549sub- 4550object. Names that can be repaired in this manner include: _ALR, _CSD, 4551_HPX, 4552_MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 4553939. 4554 4555Changed the exception code returned for invalid ACPI paths passed as 4556parameters to external interfaces such as AcpiEvaluateObject. Was 4557AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 4558 4559Example Code and Data Size: These are the sizes for the OS-independent 4560acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4561debug 4562version of the code includes the debug output trace mechanism and has a 4563much 4564larger code and data size. 4565 4566 Previous Release: 4567 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 4568 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 4569 Current Release: 4570 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 4571 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 4572 4573 45742) iASL Compiler/Disassembler and Tools: 4575 4576iASL: Added the infrastructure and initial implementation of a integrated 4577C- 4578like preprocessor. This will simplify BIOS development process by 4579eliminating 4580the need for a separate preprocessing step during builds. On Windows, it 4581also 4582eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 4583features including full #define() macro support are still under 4584development. 4585These preprocessor directives are supported: 4586 #define 4587 #elif 4588 #else 4589 #endif 4590 #error 4591 #if 4592 #ifdef 4593 #ifndef 4594 #include 4595 #pragma message 4596 #undef 4597 #warning 4598In addition, these new command line options are supported: 4599 -D <symbol> Define symbol for preprocessor use 4600 -li Create preprocessed output file (*.i) 4601 -P Preprocess only and create preprocessor output file (*.i) 4602 4603Table Compiler: Fixed a problem where the equals operator within an 4604expression 4605did not work properly. 4606 4607Updated iASL to use the current versions of Bison/Flex. Updated the 4608Windows 4609project file to invoke these tools from the standard location. ACPICA BZ 4610904. 4611Versions supported: 4612 Flex for Windows: V2.5.4 4613 Bison for Windows: V2.4.1 4614 4615---------------------------------------- 461615 February 2012. Summary of changes for version 20120215: 4617 4618 46191) ACPICA Core Subsystem: 4620 4621There have been some major changes to the sleep/wake support code, as 4622described below (a - e). 4623 4624a) The AcpiLeaveSleepState has been split into two interfaces, similar to 4625AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 4626AcpiLeaveSleepStatePrep. This allows the host to perform actions between 4627the 4628time the _BFS method is called and the _WAK method is called. NOTE: all 4629hosts 4630must update their wake/resume code or else sleep/wake will not work 4631properly. 4632Rafael Wysocki. 4633 4634b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the 4635_WAK 4636method. Some machines require that the GPEs are enabled before the _WAK 4637method 4638is executed. Thomas Renninger. 4639 4640c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) 4641bit. 4642Some BIOS code assumes that WAK_STS will be cleared on resume and use it 4643to 4644determine whether the system is rebooting or resuming. Matthew Garrett. 4645 4646d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From 4647Sleep) to 4648match the ACPI specification requirement. Rafael Wysocki. 4649 4650e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 4651registers within the V5 FADT. This support adds two new files: 4652hardware/hwesleep.c implements the support for the new registers. Moved 4653all 4654sleep/wake external interfaces to hardware/hwxfsleep.c. 4655 4656 4657Added a new OSL interface for ACPI table overrides, 4658AcpiOsPhysicalTableOverride. This interface allows the host to override a 4659table via a physical address, instead of the logical address required by 4660AcpiOsTableOverride. This simplifies the host implementation. Initial 4661implementation by Thomas Renninger. The ACPICA implementation creates a 4662single 4663shared function for table overrides that attempts both a logical and a 4664physical override. 4665 4666Expanded the OSL memory read/write interfaces to 64-bit data 4667(AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 4668transfer support for GAS register structures passed to AcpiRead and 4669AcpiWrite. 4670 4671Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a 4672custom 4673build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) 4674model. 4675See the ACPICA reference for details. ACPICA BZ 942. This option removes 4676about 467710% of the code and 5% of the static data, and the following hardware 4678ACPI 4679features become unavailable: 4680 PM Event and Control registers 4681 SCI interrupt (and handler) 4682 Fixed Events 4683 General Purpose Events (GPEs) 4684 Global Lock 4685 ACPI PM timer 4686 FACS table (Waking vectors and Global Lock) 4687 4688Updated the unix tarball directory structure to match the ACPICA git 4689source 4690tree. This ensures that the generic unix makefiles work properly (in 4691generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 4692867. 4693 4694Updated the return value of the _REV predefined method to integer value 5 4695to 4696reflect ACPI 5.0 support. 4697 4698Moved the external ACPI PM timer interface prototypes to the public 4699acpixf.h 4700file where they belong. 4701 4702Example Code and Data Size: These are the sizes for the OS-independent 4703acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4704debug 4705version of the code includes the debug output trace mechanism and has a 4706much 4707larger code and data size. 4708 4709 Previous Release: 4710 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 4711 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 4712 Current Release: 4713 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 4714 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 4715 4716 47172) iASL Compiler/Disassembler and Tools: 4718 4719Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 4720descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 4721incorrectly displayed. 4722 4723AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 4724specification. 4725 4726---------------------------------------- 472711 January 2012. Summary of changes for version 20120111: 4728 4729 47301) ACPICA Core Subsystem: 4731 4732Implemented a new mechanism to allow host device drivers to check for 4733address 4734range conflicts with ACPI Operation Regions. Both SystemMemory and 4735SystemIO 4736address spaces are supported. A new external interface, 4737AcpiCheckAddressRange, 4738allows drivers to check an address range against the ACPI namespace. See 4739the 4740ACPICA reference for additional details. Adds one new file, 4741utilities/utaddress.c. Lin Ming, Bob Moore. 4742 4743Fixed several issues with the ACPI 5.0 FADT support: Add the sleep 4744Control 4745and 4746Status registers, update the ACPI 5.0 flags, and update internal data 4747structures to handle an FADT larger than 256 bytes. The size of the ACPI 47485.0 4749FADT is 268 bytes. 4750 4751Updated all ACPICA copyrights and signons to 2012. Added the 2012 4752copyright to 4753all module headers and signons, including the standard Linux header. This 4754affects virtually every file in the ACPICA core subsystem, iASL compiler, 4755and 4756all ACPICA utilities. 4757 4758Example Code and Data Size: These are the sizes for the OS-independent 4759acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4760debug 4761version of the code includes the debug output trace mechanism and has a 4762much 4763larger code and data size. 4764 4765 Previous Release: 4766 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 4767 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 4768 Current Release: 4769 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 4770 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 4771 4772 47732) iASL Compiler/Disassembler and Tools: 4774 4775Disassembler: fixed a problem with the automatic resource tag generation 4776support. Fixes a problem where the resource tags are inadvertently not 4777constructed if the table being disassembled contains external references 4778to 4779control methods. Moved the actual construction of the tags to after the 4780final 4781namespace is constructed (after 2nd parse is invoked due to external 4782control 4783method references.) ACPICA BZ 941. 4784 4785Table Compiler: Make all "generic" operators caseless. These are the 4786operators 4787like UINT8, String, etc. Making these caseless improves ease-of-use. 4788ACPICA BZ 4789934. 4790 4791---------------------------------------- 479223 November 2011. Summary of changes for version 20111123: 4793 47940) ACPI 5.0 Support: 4795 4796This release contains full support for the ACPI 5.0 specification, as 4797summarized below. 4798 4799Reduced Hardware Support: 4800------------------------- 4801 4802This support allows for ACPI systems without the usual ACPI hardware. 4803This 4804support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA 4805will 4806not attempt to initialize or use any of the usual ACPI hardware. Note, 4807when 4808this flag is set, all of the following ACPI hardware is assumed to be not 4809present and is not initialized or accessed: 4810 4811 General Purpose Events (GPEs) 4812 Fixed Events (PM1a/PM1b and PM Control) 4813 Power Management Timer and Console Buttons (power/sleep) 4814 Real-time Clock Alarm 4815 Global Lock 4816 System Control Interrupt (SCI) 4817 The FACS is assumed to be non-existent 4818 4819ACPI Tables: 4820------------ 4821 4822All new tables and updates to existing tables are fully supported in the 4823ACPICA headers (for use by device drivers), the disassembler, and the 4824iASL 4825Data Table Compiler. ACPI 5.0 defines these new tables: 4826 4827 BGRT /* Boot Graphics Resource Table */ 4828 DRTM /* Dynamic Root of Trust for Measurement table */ 4829 FPDT /* Firmware Performance Data Table */ 4830 GTDT /* Generic Timer Description Table */ 4831 MPST /* Memory Power State Table */ 4832 PCCT /* Platform Communications Channel Table */ 4833 PMTT /* Platform Memory Topology Table */ 4834 RASF /* RAS Feature table */ 4835 4836Operation Regions/SpaceIDs: 4837--------------------------- 4838 4839All new operation regions are fully supported by the iASL compiler, the 4840disassembler, and the ACPICA runtime code (for dispatch to region 4841handlers.) 4842The new operation region Space IDs are: 4843 4844 GeneralPurposeIo 4845 GenericSerialBus 4846 4847Resource Descriptors: 4848--------------------- 4849 4850All new ASL resource descriptors are fully supported by the iASL 4851compiler, 4852the 4853ASL/AML disassembler, and the ACPICA runtime Resource Manager code 4854(including 4855all new predefined resource tags). New descriptors are: 4856 4857 FixedDma 4858 GpioIo 4859 GpioInt 4860 I2cSerialBus 4861 SpiSerialBus 4862 UartSerialBus 4863 4864ASL/AML Operators, New and Modified: 4865------------------------------------ 4866 4867One new operator is added, the Connection operator, which is used to 4868associate 4869a GeneralPurposeIo or GenericSerialBus resource descriptor with 4870individual 4871field objects within an operation region. Several new protocols are 4872associated 4873with the AccessAs operator. All are fully supported by the iASL compiler, 4874disassembler, and runtime ACPICA AML interpreter: 4875 4876 Connection // Declare Field Connection 4877attributes 4878 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 4879 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes 4880Protocol 4881 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 4882 RawDataBuffer // Data type for Vendor Data 4883fields 4884 4885Predefined ASL/AML Objects: 4886--------------------------- 4887 4888All new predefined objects/control-methods are supported by the iASL 4889compiler 4890and the ACPICA runtime validation/repair (arguments and return values.) 4891New 4892predefined names include the following: 4893 4894Standard Predefined Names (Objects or Control Methods): 4895 _AEI, _CLS, _CPC, _CWS, _DEP, 4896 _DLM, _EVT, _GCP, _CRT, _GWS, 4897 _HRV, _PRE, _PSE, _SRT, _SUB. 4898 4899Resource Tags (Names used to access individual fields within resource 4900descriptors): 4901 _DBT, _DPL, _DRS, _END, _FLC, 4902 _IOR, _LIN, _MOD, _PAR, _PHA, 4903 _PIN, _PPI, _POL, _RXL, _SLV, 4904 _SPE, _STB, _TXL, _VEN. 4905 4906ACPICA External Interfaces: 4907--------------------------- 4908 4909Several new interfaces have been defined for use by ACPI-related device 4910drivers and other host OS services: 4911 4912AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS 4913to 4914acquire and release AML mutexes that are defined in the DSDT/SSDT tables 4915provided by the BIOS. They are intended to be used in conjunction with 4916the 4917ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 4918mutual exclusion with the AML code/interpreter. 4919 4920AcpiGetEventResources: Returns the (formatted) resource descriptors as 4921defined 4922by the ACPI 5.0 _AEI object (ACPI Event Information). This object 4923provides 4924resource descriptors associated with hardware-reduced platform events, 4925similar 4926to the AcpiGetCurrentResources interface. 4927 4928Operation Region Handlers: For General Purpose IO and Generic Serial Bus 4929operation regions, information about the Connection() object and any 4930optional 4931length information is passed to the region handler within the Context 4932parameter. 4933 4934AcpiBufferToResource: This interface converts a raw AML buffer containing 4935a 4936resource template or resource descriptor to the ACPI_RESOURCE internal 4937format 4938suitable for use by device drivers. Can be used by an operation region 4939handler 4940to convert the Connection() buffer object into a ACPI_RESOURCE. 4941 4942Miscellaneous/Tools/TestSuites: 4943------------------------------- 4944 4945Support for extended _HID names (Four alpha characters instead of three). 4946Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 4947Support for ACPI 5.0 features in the ASLTS test suite. 4948Fully updated documentation (ACPICA and iASL reference documents.) 4949 4950ACPI Table Definition Language: 4951------------------------------- 4952 4953Support for this language was implemented and released as a subsystem of 4954the 4955iASL compiler in 2010. (See the iASL compiler User Guide.) 4956 4957 4958Non-ACPI 5.0 changes for this release: 4959-------------------------------------- 4960 49611) ACPICA Core Subsystem: 4962 4963Fix a problem with operation region declarations where a failure can 4964occur 4965if 4966the region name and an argument that evaluates to an object (such as the 4967region address) are in different namespace scopes. Lin Ming, ACPICA BZ 4968937. 4969 4970Do not abort an ACPI table load if an invalid space ID is found within. 4971This 4972will be caught later if the offending method is executed. ACPICA BZ 925. 4973 4974Fixed an issue with the FFixedHW space ID where the ID was not always 4975recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 4976 4977Fixed a problem with the 32-bit generation of the unix-specific OSL 4978(osunixxf.c). Lin Ming, ACPICA BZ 936. 4979 4980Several changes made to enable generation with the GCC 4.6 compiler. 4981ACPICA BZ 4982935. 4983 4984New error messages: Unsupported I/O requests (not 8/16/32 bit), and 4985Index/Bank 4986field registers out-of-range. 4987 49882) iASL Compiler/Disassembler and Tools: 4989 4990iASL: Implemented the __PATH__ operator, which returns the full pathname 4991of 4992the current source file. 4993 4994AcpiHelp: Automatically display expanded keyword information for all ASL 4995operators. 4996 4997Debugger: Add "Template" command to disassemble/dump resource template 4998buffers. 4999 5000Added a new master script to generate and execute the ASLTS test suite. 5001Automatically handles 32- and 64-bit generation. See tests/aslts.sh 5002 5003iASL: Fix problem with listing generation during processing of the 5004Switch() 5005operator where AML listing was disabled until the entire Switch block was 5006completed. 5007 5008iASL: Improve support for semicolon statement terminators. Fix "invalid 5009character" message for some cases when the semicolon is used. Semicolons 5010are 5011now allowed after every <Term> grammar element. ACPICA BZ 927. 5012 5013iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 5014923. 5015 5016Disassembler: Fix problem with disassembly of the DataTableRegion 5017operator 5018where an inadvertent "Unhandled deferred opcode" message could be 5019generated. 5020 50213) Example Code and Data Size 5022 5023These are the sizes for the OS-independent acpica.lib produced by the 5024Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 5025includes the debug output trace mechanism and has a much larger code and 5026data 5027size. 5028 5029 Previous Release: 5030 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 5031 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 5032 Current Release: 5033 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 5034 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 5035 5036---------------------------------------- 503722 September 2011. Summary of changes for version 20110922: 5038 50390) ACPI 5.0 News: 5040 5041Support for ACPI 5.0 in ACPICA has been underway for several months and 5042will 5043be released at the same time that ACPI 5.0 is officially released. 5044 5045The ACPI 5.0 specification is on track for release in the next few 5046months. 5047 50481) ACPICA Core Subsystem: 5049 5050Fixed a problem where the maximum sleep time for the Sleep() operator was 5051intended to be limited to two seconds, but was inadvertently limited to 505220 5053seconds instead. 5054 5055Linux and Unix makefiles: Added header file dependencies to ensure 5056correct 5057generation of ACPICA core code and utilities. Also simplified the 5058makefiles 5059considerably through the use of the vpath variable to specify search 5060paths. 5061ACPICA BZ 924. 5062 50632) iASL Compiler/Disassembler and Tools: 5064 5065iASL: Implemented support to check the access length for all fields 5066created to 5067access named Resource Descriptor fields. For example, if a resource field 5068is 5069defined to be two bits, a warning is issued if a CreateXxxxField() is 5070used 5071with an incorrect bit length. This is implemented for all current 5072resource 5073descriptor names. ACPICA BZ 930. 5074 5075Disassembler: Fixed a byte ordering problem with the output of 24-bit and 507656- 5077bit integers. 5078 5079iASL: Fixed a couple of issues associated with variable-length package 5080objects. 1) properly handle constants like One, Ones, Zero -- do not make 5081a 5082VAR_PACKAGE when these are used as a package length. 2) Allow the 5083VAR_PACKAGE 5084opcode (in addition to PACKAGE) when validating object types for 5085predefined 5086names. 5087 5088iASL: Emit statistics for all output files (instead of just the ASL input 5089and 5090AML output). Includes listings, hex files, etc. 5091 5092iASL: Added -G option to the table compiler to allow the compilation of 5093custom 5094ACPI tables. The only part of a table that is required is the standard 509536- 5096byte 5097ACPI header. 5098 5099AcpiXtract: Ported to the standard ACPICA environment (with ACPICA 5100headers), 5101which also adds correct 64-bit support. Also, now all output filenames 5102are 5103completely lower case. 5104 5105AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 5106loading table files. A warning is issued for any such tables. The only 5107exception is an FADT. This also fixes a possible fault when attempting to 5108load 5109non-AML tables. ACPICA BZ 932. 5110 5111AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where 5112a 5113missing table terminator could cause a fault when using the -p option. 5114 5115AcpiSrc: Fixed a possible divide-by-zero fault when generating file 5116statistics. 5117 51183) Example Code and Data Size 5119 5120These are the sizes for the OS-independent acpica.lib produced by the 5121Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 5122includes the debug output trace mechanism and has a much larger code and 5123data 5124size. 5125 5126 Previous Release (VC 9.0): 5127 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 5128 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 5129 Current Release (VC 9.0): 5130 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 5131 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 5132 5133 5134---------------------------------------- 513523 June 2011. Summary of changes for version 20110623: 5136 51371) ACPI CA Core Subsystem: 5138 5139Updated the predefined name repair mechanism to not attempt repair of a 5140_TSS 5141return object if a _PSS object is present. We can only sort the _TSS 5142return 5143package if there is no _PSS within the same scope. This is because if 5144_PSS 5145is 5146present, the ACPI specification dictates that the _TSS Power Dissipation 5147field 5148is to be ignored, and therefore some BIOSs leave garbage values in the 5149_TSS 5150Power field(s). In this case, it is best to just return the _TSS package 5151as- 5152is. Reported by, and fixed with assistance from Fenghua Yu. 5153 5154Added an option to globally disable the control method return value 5155validation 5156and repair. This runtime option can be used to disable return value 5157repair 5158if 5159this is causing a problem on a particular machine. Also added an option 5160to 5161AcpiExec (-dr) to set this disable flag. 5162 5163All makefiles and project files: Major changes to improve generation of 5164ACPICA 5165tools. ACPICA BZ 912: 5166 Reduce default optimization levels to improve compatibility 5167 For Linux, add strict-aliasing=0 for gcc 4 5168 Cleanup and simplify use of command line defines 5169 Cleanup multithread library support 5170 Improve usage messages 5171 5172Linux-specific header: update handling of THREAD_ID and pthread. For the 517332- 5174bit case, improve casting to eliminate possible warnings, especially with 5175the 5176acpica tools. 5177 5178Example Code and Data Size: These are the sizes for the OS-independent 5179acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5180debug 5181version of the code includes the debug output trace mechanism and has a 5182much 5183larger code and data size. 5184 5185 Previous Release (VC 9.0): 5186 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 5187 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 5188 Current Release (VC 9.0): 5189 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 5190 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 5191 51922) iASL Compiler/Disassembler and Tools: 5193 5194With this release, a new utility named "acpihelp" has been added to the 5195ACPICA 5196package. This utility summarizes the ACPI specification chapters for the 5197ASL 5198and AML languages. It generates under Linux/Unix as well as Windows, and 5199provides the following functionality: 5200 Find/display ASL operator(s) -- with description and syntax. 5201 Find/display ASL keyword(s) -- with exact spelling and descriptions. 5202 Find/display ACPI predefined name(s) -- with description, number 5203 of arguments, and the return value data type. 5204 Find/display AML opcode name(s) -- with opcode, arguments, and 5205grammar. 5206 Decode/display AML opcode -- with opcode name, arguments, and 5207grammar. 5208 5209Service Layers: Make multi-thread support configurable. Conditionally 5210compile 5211the multi-thread support so that threading libraries will not be linked 5212if 5213not 5214necessary. The only tool that requires multi-thread support is AcpiExec. 5215 5216iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions 5217of 5218Bison appear to want the interface to yyerror to be a const char * (or at 5219least this is a problem when generating iASL on some systems.) ACPICA BZ 5220923 5221Pierre Lejeune. 5222 5223Tools: Fix for systems where O_BINARY is not defined. Only used for 5224Windows 5225versions of the tools. 5226 5227---------------------------------------- 522827 May 2011. Summary of changes for version 20110527: 5229 52301) ACPI CA Core Subsystem: 5231 5232ASL Load() operator: Reinstate most restrictions on the incoming ACPI 5233table 5234signature. Now, only allow SSDT, OEMx, and a null signature. History: 5235 1) Originally, we checked the table signature for "SSDT" or "PSDT". 5236 (PSDT is now obsolete.) 5237 2) We added support for OEMx tables, signature "OEM" plus a fourth 5238 "don't care" character. 5239 3) Valid tables were encountered with a null signature, so we just 5240 gave up on validating the signature, (05/2008). 5241 4) We encountered non-AML tables such as the MADT, which caused 5242 interpreter errors and kernel faults. So now, we once again allow 5243 only SSDT, OEMx, and now, also a null signature. (05/2011). 5244 5245Added the missing _TDL predefined name to the global name list in order 5246to 5247enable validation. Affects both the core ACPICA code and the iASL 5248compiler. 5249 5250Example Code and Data Size: These are the sizes for the OS-independent 5251acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5252debug 5253version of the code includes the debug output trace mechanism and has a 5254much 5255larger code and data size. 5256 5257 Previous Release (VC 9.0): 5258 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 5259 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 5260 Current Release (VC 9.0): 5261 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 5262 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 5263 52642) iASL Compiler/Disassembler and Tools: 5265 5266Debugger/AcpiExec: Implemented support for "complex" method arguments on 5267the 5268debugger command line. This adds support beyond simple integers -- 5269including 5270Strings, Buffers, and Packages. Includes support for nested packages. 5271Increased the default command line buffer size to accommodate these 5272arguments. 5273See the ACPICA reference for details and syntax. ACPICA BZ 917. 5274 5275Debugger/AcpiExec: Implemented support for "default" method arguments for 5276the 5277Execute/Debug command. Now, the debugger will always invoke a control 5278method 5279with the required number of arguments -- even if the command line 5280specifies 5281none or insufficient arguments. It uses default integer values for any 5282missing 5283arguments. Also fixes a bug where only six method arguments maximum were 5284supported instead of the required seven. 5285 5286Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine 5287and 5288also return status in order to prevent buffer overruns. See the ACPICA 5289reference for details and syntax. ACPICA BZ 921 5290 5291iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 5292makefiles to simplify support for the two different but similar parser 5293generators, bison and yacc. 5294 5295Updated the generic unix makefile for gcc 4. The default gcc version is 5296now 5297expected to be 4 or greater, since options specific to gcc 4 are used. 5298 5299---------------------------------------- 530013 April 2011. Summary of changes for version 20110413: 5301 53021) ACPI CA Core Subsystem: 5303 5304Implemented support to execute a so-called "orphan" _REG method under the 5305EC 5306device. This change will force the execution of a _REG method underneath 5307the 5308EC 5309device even if there is no corresponding operation region of type 5310EmbeddedControl. Fixes a problem seen on some machines and apparently is 5311compatible with Windows behavior. ACPICA BZ 875. 5312 5313Added more predefined methods that are eligible for automatic NULL 5314package 5315element removal. This change adds another group of predefined names to 5316the 5317list 5318of names that can be repaired by having NULL package elements dynamically 5319removed. This group are those methods that return a single variable- 5320length 5321package containing simple data types such as integers, buffers, strings. 5322This 5323includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, 5324_PSL, 5325_Sx, 5326and _TZD. ACPICA BZ 914. 5327 5328Split and segregated all internal global lock functions to a new file, 5329evglock.c. 5330 5331Updated internal address SpaceID for DataTable regions. Moved this 5332internal 5333space 5334id in preparation for ACPI 5.0 changes that will include some new space 5335IDs. 5336This 5337change should not affect user/host code. 5338 5339Example Code and Data Size: These are the sizes for the OS-independent 5340acpica.lib 5341produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 5342version of 5343the code includes the debug output trace mechanism and has a much larger 5344code 5345and 5346data size. 5347 5348 Previous Release (VC 9.0): 5349 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 5350 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 5351 Current Release (VC 9.0): 5352 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 5353 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 5354 53552) iASL Compiler/Disassembler and Tools: 5356 5357iASL/DTC: Major update for new grammar features. Allow generic data types 5358in 5359custom ACPI tables. Field names are now optional. Any line can be split 5360to 5361multiple lines using the continuation char (\). Large buffers now use 5362line- 5363continuation character(s) and no colon on the continuation lines. See the 5364grammar 5365update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob 5366Moore. 5367 5368iASL: Mark ASL "Return()" and the simple "Return" as "Null" return 5369statements. 5370Since the parser stuffs a "zero" as the return value for these statements 5371(due 5372to 5373the underlying AML grammar), they were seen as "return with value" by the 5374iASL 5375semantic checking. They are now seen correctly as "null" return 5376statements. 5377 5378iASL: Check if a_REG declaration has a corresponding Operation Region. 5379Adds a 5380check for each _REG to ensure that there is in fact a corresponding 5381operation 5382region declaration in the same scope. If not, the _REG method is not very 5383useful 5384since it probably won't be executed. ACPICA BZ 915. 5385 5386iASL/DTC: Finish support for expression evaluation. Added a new 5387expression 5388parser 5389that implements c-style operator precedence and parenthesization. ACPICA 5390bugzilla 5391908. 5392 5393Disassembler/DTC: Remove support for () and <> style comments in data 5394tables. 5395Now 5396that DTC has full expression support, we don't want to have comment 5397strings 5398that 5399start with a parentheses or a less-than symbol. Now, only the standard /* 5400and 5401// 5402comments are supported, as well as the bracket [] comments. 5403 5404AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 5405"unusual" 5406headers in the acpidump file. Update the header validation to support 5407these 5408tables. Problem introduced in previous AcpiXtract version in the change 5409to 5410support "wrong checksum" error messages emitted by acpidump utility. 5411 5412iASL: Add a * option to generate all template files (as a synonym for 5413ALL) 5414as 5415in 5416"iasl -T *" or "iasl -T ALL". 5417 5418iASL/DTC: Do not abort compiler on fatal errors. We do not want to 5419completely 5420abort the compiler on "fatal" errors, simply should abort the current 5421compile. 5422This allows multiple compiles with a single (possibly wildcard) compiler 5423invocation. 5424 5425---------------------------------------- 542616 March 2011. Summary of changes for version 20110316: 5427 54281) ACPI CA Core Subsystem: 5429 5430Fixed a problem caused by a _PRW method appearing at the namespace root 5431scope 5432during the setup of wake GPEs. A fault could occur if a _PRW directly 5433under 5434the 5435root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 5436 5437Implemented support for "spurious" Global Lock interrupts. On some 5438systems, a 5439global lock interrupt can occur without the pending flag being set. Upon 5440a 5441GL 5442interrupt, we now ensure that a thread is actually waiting for the lock 5443before 5444signaling GL availability. Rafael Wysocki, Bob Moore. 5445 5446Example Code and Data Size: These are the sizes for the OS-independent 5447acpica.lib 5448produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 5449version of 5450the code includes the debug output trace mechanism and has a much larger 5451code 5452and 5453data size. 5454 5455 Previous Release (VC 9.0): 5456 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 5457 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 5458 Current Release (VC 9.0): 5459 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 5460 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 5461 54622) iASL Compiler/Disassembler and Tools: 5463 5464Implemented full support for the "SLIC" ACPI table. Includes support in 5465the 5466header files, disassembler, table compiler, and template generator. Bob 5467Moore, 5468Lin Ming. 5469 5470AcpiXtract: Correctly handle embedded comments and messages from 5471AcpiDump. 5472Apparently some or all versions of acpidump will occasionally emit a 5473comment 5474like 5475"Wrong checksum", etc., into the dump file. This was causing problems for 5476AcpiXtract. ACPICA BZ 905. 5477 5478iASL: Fix the Linux makefile by removing an inadvertent double file 5479inclusion. 5480ACPICA BZ 913. 5481 5482AcpiExec: Update installation of operation region handlers. Install one 5483handler 5484for a user-defined address space. This is used by the ASL test suite 5485(ASLTS). 5486 5487---------------------------------------- 548811 February 2011. Summary of changes for version 20110211: 5489 54901) ACPI CA Core Subsystem: 5491 5492Added a mechanism to defer _REG methods for some early-installed 5493handlers. 5494Most user handlers should be installed before call to 5495AcpiEnableSubsystem. 5496However, Event handlers and region handlers should be installed after 5497AcpiInitializeObjects. Override handlers for the "default" regions should 5498be 5499installed early, however. This change executes all _REG methods for the 5500default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 5501chicken/egg issues between them. ACPICA BZ 848. 5502 5503Implemented an optimization for GPE detection. This optimization will 5504simply 5505ignore GPE registers that contain no enabled GPEs -- there is no need to 5506read the register since this information is available internally. This 5507becomes more important on machines with a large GPE space. ACPICA 5508bugzilla 5509884. Lin Ming. Suggestion from Joe Liu. 5510 5511Removed all use of the highly unreliable FADT revision field. The 5512revision 5513number in the FADT has been found to be completely unreliable and cannot 5514be 5515trusted. Only the actual table length can be used to infer the version. 5516This 5517change updates the ACPICA core and the disassembler so that both no 5518longer 5519even look at the FADT version and instead depend solely upon the FADT 5520length. 5521 5522Fix an unresolved name issue for the no-debug and no-error-message source 5523generation cases. The _AcpiModuleName was left undefined in these cases, 5524but 5525it is actually needed as a parameter to some interfaces. Define 5526_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 5527 5528Split several large files (makefiles and project files updated) 5529 utglobal.c -> utdecode.c 5530 dbcomds.c -> dbmethod.c dbnames.c 5531 dsopcode.c -> dsargs.c dscontrol.c 5532 dsload.c -> dsload2.c 5533 aslanalyze.c -> aslbtypes.c aslwalks.c 5534 5535Example Code and Data Size: These are the sizes for the OS-independent 5536acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5537debug version of the code includes the debug output trace mechanism and 5538has 5539a much larger code and data size. 5540 5541 Previous Release (VC 9.0): 5542 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 5543 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 5544 Current Release (VC 9.0): 5545 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 5546 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 5547 55482) iASL Compiler/Disassembler and Tools: 5549 5550iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 5551These are useful C-style macros with the standard definitions. ACPICA 5552bugzilla 898. 5553 5554iASL/DTC: Added support for integer expressions and labels. Support for 5555full 5556expressions for all integer fields in all ACPI tables. Support for labels 5557in 5558"generic" portions of tables such as UEFI. See the iASL reference manual. 5559 5560Debugger: Added a command to display the status of global handlers. The 5561"handlers" command will display op region, fixed event, and miscellaneous 5562global handlers. installation status -- and for op regions, whether 5563default 5564or user-installed handler will be used. 5565 5566iASL: Warn if reserved method incorrectly returns a value. Many 5567predefined 5568names are defined such that they do not return a value. If implemented as 5569a 5570method, issue a warning if such a name explicitly returns a value. ACPICA 5571Bugzilla 855. 5572 5573iASL: Added detection of GPE method name conflicts. Detects a conflict 5574where 5575there are two GPE methods of the form _Lxy and _Exy in the same scope. 5576(For 5577example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 5578 5579iASL/DTC: Fixed a couple input scanner issues with comments and line 5580numbers. Comment remover could get confused and miss a comment ending. 5581Fixed 5582a problem with line counter maintenance. 5583 5584iASL/DTC: Reduced the severity of some errors from fatal to error. There 5585is 5586no need to abort on simple errors within a field definition. 5587 5588Debugger: Simplified the output of the help command. All help output now 5589in 5590a single screen, instead of help subcommands. ACPICA Bugzilla 897. 5591 5592---------------------------------------- 559312 January 2011. Summary of changes for version 20110112: 5594 55951) ACPI CA Core Subsystem: 5596 5597Fixed a race condition between method execution and namespace walks that 5598can 5599possibly cause a fault. The problem was apparently introduced in version 560020100528 as a result of a performance optimization that reduces the 5601number 5602of 5603namespace walks upon method exit by using the delete_namespace_subtree 5604function instead of the delete_namespace_by_owner function used 5605previously. 5606Bug is a missing namespace lock in the delete_namespace_subtree function. 5607dana.myers@oracle.com 5608 5609Fixed several issues and a possible fault with the automatic "serialized" 5610method support. History: This support changes a method to "serialized" on 5611the 5612fly if the method generates an AE_ALREADY_EXISTS error, indicating the 5613possibility that it cannot handle reentrancy. This fix repairs a couple 5614of 5615issues seen in the field, especially on machines with many cores: 5616 5617 1) Delete method children only upon the exit of the last thread, 5618 so as to not delete objects out from under other running threads 5619 (and possibly causing a fault.) 5620 2) Set the "serialized" bit for the method only upon the exit of the 5621 Last thread, so as to not cause deadlock when running threads 5622 attempt to exit. 5623 3) Cleanup the use of the AML "MethodFlags" and internal method flags 5624 so that there is no longer any confusion between the two. 5625 5626 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 5627 5628Debugger: Now lock the namespace for duration of a namespace dump. 5629Prevents 5630issues if the namespace is changing dynamically underneath the debugger. 5631Especially affects temporary namespace nodes, since the debugger displays 5632these also. 5633 5634Updated the ordering of include files. The ACPICA headers should appear 5635before any compiler-specific headers (stdio.h, etc.) so that acenv.h can 5636set 5637any necessary compiler-specific defines, etc. Affects the ACPI-related 5638tools 5639and utilities. 5640 5641Updated all ACPICA copyrights and signons to 2011. Added the 2011 5642copyright 5643to all module headers and signons, including the Linux header. This 5644affects 5645virtually every file in the ACPICA core subsystem, iASL compiler, and all 5646utilities. 5647 5648Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 5649project files for VC++ 6.0 are now obsolete. New project files can be 5650found 5651under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 5652details. 5653 5654Example Code and Data Size: These are the sizes for the OS-independent 5655acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5656debug version of the code includes the debug output trace mechanism and 5657has a 5658much larger code and data size. 5659 5660 Previous Release (VC 6.0): 5661 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 5662 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 5663 Current Release (VC 9.0): 5664 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 5665 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 5666 56672) iASL Compiler/Disassembler and Tools: 5668 5669iASL: Added generic data types to the Data Table compiler. Add "generic" 5670data 5671types such as UINT32, String, Unicode, etc., to simplify the generation 5672of 5673platform-defined tables such as UEFI. Lin Ming. 5674 5675iASL: Added listing support for the Data Table Compiler. Adds listing 5676support 5677(-l) to display actual binary output for each line of input code. 5678 5679---------------------------------------- 568009 December 2010. Summary of changes for version 20101209: 5681 56821) ACPI CA Core Subsystem: 5683 5684Completed the major overhaul of the GPE support code that was begun in 5685July 56862010. Major features include: removal of _PRW execution in ACPICA (host 5687executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 5688changes to existing interfaces, simplification of GPE handler operation, 5689and 5690a handful of new interfaces: 5691 5692 AcpiUpdateAllGpes 5693 AcpiFinishGpe 5694 AcpiSetupGpeForWake 5695 AcpiSetGpeWakeMask 5696 One new file, evxfgpe.c to consolidate all external GPE interfaces. 5697 5698See the ACPICA Programmer Reference for full details and programming 5699information. See the new section 4.4 "General Purpose Event (GPE) 5700Support" 5701for a full overview, and section 8.7 "ACPI General Purpose Event 5702Management" 5703for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin 5704Ming, 5705Bob Moore, Rafael Wysocki. 5706 5707Implemented a new GPE feature for Windows compatibility, the "Implicit 5708Wake 5709GPE Notify". This feature will automatically issue a Notify(2) on a 5710device 5711when a Wake GPE is received if there is no corresponding GPE method or 5712handler. ACPICA BZ 870. 5713 5714Fixed a problem with the Scope() operator during table parse and load 5715phase. 5716During load phase (table load or method execution), the scope operator 5717should 5718not enter the target into the namespace. Instead, it should open a new 5719scope 5720at the target location. Linux BZ 19462, ACPICA BZ 882. 5721 5722Example Code and Data Size: These are the sizes for the OS-independent 5723acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5724debug version of the code includes the debug output trace mechanism and 5725has a 5726much larger code and data size. 5727 5728 Previous Release: 5729 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 5730 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 5731 Current Release: 5732 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 5733 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 5734 57352) iASL Compiler/Disassembler and Tools: 5736 5737iASL: Relax the alphanumeric restriction on _CID strings. These strings 5738are 5739"bus-specific" per the ACPI specification, and therefore any characters 5740are 5741acceptable. The only checks that can be performed are for a null string 5742and 5743perhaps for a leading asterisk. ACPICA BZ 886. 5744 5745iASL: Fixed a problem where a syntax error that caused a premature EOF 5746condition on the source file emitted a very confusing error message. The 5747premature EOF is now detected correctly. ACPICA BZ 891. 5748 5749Disassembler: Decode the AccessSize within a Generic Address Structure 5750(byte 5751access, word access, etc.) Note, this field does not allow arbitrary bit 5752access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 5753 5754New: AcpiNames utility - Example namespace dump utility. Shows an example 5755of 5756ACPICA configuration for a minimal namespace dump utility. Uses table and 5757namespace managers, but no AML interpreter. Does not add any 5758functionality 5759over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 5760partition and configure ACPICA. ACPICA BZ 883. 5761 5762AML Debugger: Increased the debugger buffer size for method return 5763objects. 5764Was 4K, increased to 16K. Also enhanced error messages for debugger 5765method 5766execution, including the buffer overflow case. 5767 5768---------------------------------------- 576913 October 2010. Summary of changes for version 20101013: 5770 57711) ACPI CA Core Subsystem: 5772 5773Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, 5774now 5775clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 5776HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 5777 5778Changed the type of the predefined namespace object _TZ from ThermalZone 5779to 5780Device. This was found to be confusing to the host software that 5781processes 5782the various thermal zones, since _TZ is not really a ThermalZone. 5783However, 5784a 5785Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 5786Zhang. 5787 5788Added Windows Vista SP2 to the list of supported _OSI strings. The actual 5789string is "Windows 2006 SP2". 5790 5791Eliminated duplicate code in AcpiUtExecute* functions. Now that the 5792nsrepair 5793code automatically repairs _HID-related strings, this type of code is no 5794longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 5795878. 5796 5797Example Code and Data Size: These are the sizes for the OS-independent 5798acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5799debug version of the code includes the debug output trace mechanism and 5800has a 5801much larger code and data size. 5802 5803 Previous Release: 5804 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 5805 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 5806 Current Release: 5807 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 5808 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 5809 58102) iASL Compiler/Disassembler and Tools: 5811 5812iASL: Implemented additional compile-time validation for _HID strings. 5813The 5814non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the 5815length 5816of 5817the string must be exactly seven or eight characters. For both _HID and 5818_CID 5819strings, all characters must be alphanumeric. ACPICA BZ 874. 5820 5821iASL: Allow certain "null" resource descriptors. Some BIOS code creates 5822descriptors that are mostly or all zeros, with the expectation that they 5823will 5824be filled in at runtime. iASL now allows this as long as there is a 5825"resource 5826tag" (name) associated with the descriptor, which gives the ASL a handle 5827needed to modify the descriptor. ACPICA BZ 873. 5828 5829Added single-thread support to the generic Unix application OSL. 5830Primarily 5831for iASL support, this change removes the use of semaphores in the 5832single- 5833threaded ACPICA tools/applications - increasing performance. The 5834_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 5835option. ACPICA BZ 879. 5836 5837AcpiExec: several fixes for the 64-bit version. Adds XSDT support and 5838support 5839for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 5840 5841iASL: Moved all compiler messages to a new file, aslmessages.h. 5842 5843---------------------------------------- 584415 September 2010. Summary of changes for version 20100915: 5845 58461) ACPI CA Core Subsystem: 5847 5848Removed the AcpiOsDerivePciId OSL interface. The various host 5849implementations 5850of this function were not OS-dependent and are now obsolete and can be 5851removed from all host OSLs. This function has been replaced by 5852AcpiHwDerivePciId, which is now part of the ACPICA core code. 5853AcpiHwDerivePciId has been implemented without recursion. Adds one new 5854module, hwpci.c. ACPICA BZ 857. 5855 5856Implemented a dynamic repair for _HID and _CID strings. The following 5857problems are now repaired at runtime: 1) Remove a leading asterisk in the 5858string, and 2) the entire string is uppercased. Both repairs are in 5859accordance with the ACPI specification and will simplify host driver 5860code. 5861ACPICA BZ 871. 5862 5863The ACPI_THREAD_ID type is no longer configurable, internally it is now 5864always UINT64. This simplifies the ACPICA code, especially any printf 5865output. 5866UINT64 is the only common data type for all thread_id types across all 5867operating systems. It is now up to the host OSL to cast the native 5868thread_id 5869type to UINT64 before returning the value to ACPICA (via 5870AcpiOsGetThreadId). 5871Lin Ming, Bob Moore. 5872 5873Added the ACPI_INLINE type to enhance the ACPICA configuration. The 5874"inline" 5875keyword is not standard across compilers, and this type allows inline to 5876be 5877configured on a per-compiler basis. Lin Ming. 5878 5879Made the system global AcpiGbl_SystemAwakeAndRunning publically 5880available. 5881Added an extern for this boolean in acpixf.h. Some hosts utilize this 5882value 5883during suspend/restore operations. ACPICA BZ 869. 5884 5885All code that implements error/warning messages with the "ACPI:" prefix 5886has 5887been moved to a new module, utxferror.c. 5888 5889The UINT64_OVERLAY was moved to utmath.c, which is the only module where 5890it 5891is used. ACPICA BZ 829. Lin Ming, Bob Moore. 5892 5893Example Code and Data Size: These are the sizes for the OS-independent 5894acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5895debug version of the code includes the debug output trace mechanism and 5896has a 5897much larger code and data size. 5898 5899 Previous Release: 5900 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 5901 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 5902 Current Release: 5903 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 5904 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 5905 59062) iASL Compiler/Disassembler and Tools: 5907 5908iASL/Disassembler: Write ACPI errors to stderr instead of the output 5909file. 5910This keeps the output files free of random error messages that may 5911originate 5912from within the namespace/interpreter code. Used this opportunity to 5913merge 5914all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 5915866. Lin Ming, Bob Moore. 5916 5917Tools: update some printfs for ansi warnings on size_t. Handle width 5918change 5919of size_t on 32-bit versus 64-bit generations. Lin Ming. 5920 5921---------------------------------------- 592206 August 2010. Summary of changes for version 20100806: 5923 59241) ACPI CA Core Subsystem: 5925 5926Designed and implemented a new host interface to the _OSI support code. 5927This 5928will allow the host to dynamically add or remove multiple _OSI strings, 5929as 5930well as install an optional handler that is called for each _OSI 5931invocation. 5932Also added a new AML debugger command, 'osi' to display and modify the 5933global 5934_OSI string table, and test support in the AcpiExec utility. See the 5935ACPICA 5936reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 5937New Functions: 5938 AcpiInstallInterface - Add an _OSI string. 5939 AcpiRemoveInterface - Delete an _OSI string. 5940 AcpiInstallInterfaceHandler - Install optional _OSI handler. 5941Obsolete Functions: 5942 AcpiOsValidateInterface - no longer used. 5943New Files: 5944 source/components/utilities/utosi.c 5945 5946Re-introduced the support to enable multi-byte transfers for Embedded 5947Controller (EC) operation regions. A reported problem was found to be a 5948bug 5949in the host OS, not in the multi-byte support. Previously, the maximum 5950data 5951size passed to the EC operation region handler was a single byte. There 5952are 5953often EC Fields larger than one byte that need to be transferred, and it 5954is 5955useful for the EC driver to lock these as a single transaction. This 5956change 5957enables single transfers larger than 8 bits. This effectively changes the 5958access to the EC space from ByteAcc to AnyAcc, and will probably require 5959changes to the host OS Embedded Controller driver to enable 16/32/64/256- 5960bit 5961transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 5962 5963Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 5964prototype in acpiosxf.h had the output value pointer as a (void *). 5965It should be a (UINT64 *). This may affect some host OSL code. 5966 5967Fixed a couple problems with the recently modified Linux makefiles for 5968iASL 5969and AcpiExec. These new makefiles place the generated object files in the 5970local directory so that there can be no collisions between the files that 5971are 5972shared between them that are compiled with different options. 5973 5974Example Code and Data Size: These are the sizes for the OS-independent 5975acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5976debug version of the code includes the debug output trace mechanism and 5977has a 5978much larger code and data size. 5979 5980 Previous Release: 5981 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 5982 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 5983 Current Release: 5984 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 5985 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 5986 59872) iASL Compiler/Disassembler and Tools: 5988 5989iASL/Disassembler: Added a new option (-da, "disassemble all") to load 5990the 5991namespace from and disassemble an entire group of AML files. Useful for 5992loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) 5993and 5994disassembling with one simple command. ACPICA BZ 865. Lin Ming. 5995 5996iASL: Allow multiple invocations of -e option. This change allows 5997multiple 5998uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 5999834. 6000Lin Ming. 6001 6002---------------------------------------- 600302 July 2010. Summary of changes for version 20100702: 6004 60051) ACPI CA Core Subsystem: 6006 6007Implemented several updates to the recently added GPE reference count 6008support. The model for "wake" GPEs is changing to give the host OS 6009complete 6010control of these GPEs. Eventually, the ACPICA core will not execute any 6011_PRW 6012methods, since the host already must execute them. Also, additional 6013changes 6014were made to help ensure that the reference counts are kept in proper 6015synchronization with reality. Rafael J. Wysocki. 6016 60171) Ensure that GPEs are not enabled twice during initialization. 60182) Ensure that GPE enable masks stay in sync with the reference count. 60193) Do not inadvertently enable GPEs when writing GPE registers. 60204) Remove the internal wake reference counter and add new AcpiGpeWakeup 6021interface. This interface will set or clear individual GPEs for wakeup. 60225) Remove GpeType argument from AcpiEnable and AcpiDisable. These 6023interfaces 6024are now used for "runtime" GPEs only. 6025 6026Changed the behavior of the GPE install/remove handler interfaces. The 6027GPE 6028is 6029no longer disabled during this process, as it was found to cause problems 6030on 6031some machines. Rafael J. Wysocki. 6032 6033Reverted a change introduced in version 20100528 to enable Embedded 6034Controller multi-byte transfers. This change was found to cause problems 6035with 6036Index Fields and possibly Bank Fields. It will be reintroduced when these 6037problems have been resolved. 6038 6039Fixed a problem with references to Alias objects within Package Objects. 6040A 6041reference to an Alias within the definition of a Package was not always 6042resolved properly. Aliases to objects like Processors, Thermal zones, 6043etc. 6044were resolved to the actual object instead of a reference to the object 6045as 6046it 6047should be. Package objects are only allowed to contain integer, string, 6048buffer, package, and reference objects. Redhat bugzilla 608648. 6049 6050Example Code and Data Size: These are the sizes for the OS-independent 6051acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6052debug version of the code includes the debug output trace mechanism and 6053has a 6054much larger code and data size. 6055 6056 Previous Release: 6057 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 6058 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 6059 Current Release: 6060 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 6061 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 6062 60632) iASL Compiler/Disassembler and Tools: 6064 6065iASL: Implemented a new compiler subsystem to allow definition and 6066compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. 6067These 6068are called "ACPI Data Tables", and the new compiler is the "Data Table 6069Compiler". This compiler is intended to simplify the existing error-prone 6070process of creating these tables for the BIOS, as well as allowing the 6071disassembly, modification, recompilation, and override of existing ACPI 6072data 6073tables. See the iASL User Guide for detailed information. 6074 6075iASL: Implemented a new Template Generator option in support of the new 6076Data 6077Table Compiler. This option will create examples of all known ACPI tables 6078that can be used as the basis for table development. See the iASL 6079documentation and the -T option. 6080 6081Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 6082Descriptor Table). 6083 6084Updated the Linux makefiles for iASL and AcpiExec to place the generated 6085object files in the local directory so that there can be no collisions 6086between the shared files between them that are generated with different 6087options. 6088 6089Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. 6090Use 6091the #define __APPLE__ to enable this support. 6092 6093---------------------------------------- 609428 May 2010. Summary of changes for version 20100528: 6095 6096Note: The ACPI 4.0a specification was released on April 5, 2010 and is 6097available at www.acpi.info. This is primarily an errata release. 6098 60991) ACPI CA Core Subsystem: 6100 6101Undefined ACPI tables: We are looking for the definitions for the 6102following 6103ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 6104 6105Implemented support to enable multi-byte transfers for Embedded 6106Controller 6107(EC) operation regions. Previously, the maximum data size passed to the 6108EC 6109operation region handler was a single byte. There are often EC Fields 6110larger 6111than one byte that need to be transferred, and it is useful for the EC 6112driver 6113to lock these as a single transaction. This change enables single 6114transfers 6115larger than 8 bits. This effectively changes the access to the EC space 6116from 6117ByteAcc to AnyAcc, and will probably require changes to the host OS 6118Embedded 6119Controller driver to enable 16/32/64/256-bit transfers in addition to 8- 6120bit 6121transfers. Alexey Starikovskiy, Lin Ming 6122 6123Implemented a performance enhancement for namespace search and access. 6124This 6125change enhances the performance of namespace searches and walks by adding 6126a 6127backpointer to the parent in each namespace node. On large namespaces, 6128this 6129change can improve overall ACPI performance by up to 9X. Adding a pointer 6130to 6131each namespace node increases the overall size of the internal namespace 6132by 6133about 5%, since each namespace entry usually consists of both a namespace 6134node and an ACPI operand object. However, this is the first growth of the 6135namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 6136 6137Implemented a performance optimization that reduces the number of 6138namespace 6139walks. On control method exit, only walk the namespace if the method is 6140known 6141to have created namespace objects outside of its local scope. Previously, 6142the 6143entire namespace was traversed on each control method exit. This change 6144can 6145improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob 6146Moore. 6147 6148Added support to truncate I/O addresses to 16 bits for Windows 6149compatibility. 6150Some ASL code has been seen in the field that inadvertently has bits set 6151above bit 15. This feature is optional and is enabled if the BIOS 6152requests 6153any Windows OSI strings. It can also be enabled by the host OS. Matthew 6154Garrett, Bob Moore. 6155 6156Added support to limit the maximum time for the ASL Sleep() operator. To 6157prevent accidental deep sleeps, limit the maximum time that Sleep() will 6158actually sleep. Configurable, the default maximum is two seconds. ACPICA 6159bugzilla 854. 6160 6161Added run-time validation support for the _WDG and_WED Microsoft 6162predefined 6163methods. These objects are defined by "Windows Instrumentation", and are 6164not 6165part of the ACPI spec. ACPICA BZ 860. 6166 6167Expanded all statistic counters used during namespace and device 6168initialization from 16 to 32 bits in order to support very large 6169namespaces. 6170 6171Replaced all instances of %d in printf format specifiers with %u since 6172nearly 6173all integers in ACPICA are unsigned. 6174 6175Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly 6176returned 6177as AE_NO_HANDLER. 6178 6179Example Code and Data Size: These are the sizes for the OS-independent 6180acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6181debug version of the code includes the debug output trace mechanism and 6182has a 6183much larger code and data size. 6184 6185 Previous Release: 6186 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 6187 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 6188 Current Release: 6189 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 6190 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 6191 61922) iASL Compiler/Disassembler and Tools: 6193 6194iASL: Added compiler support for the _WDG and_WED Microsoft predefined 6195methods. These objects are defined by "Windows Instrumentation", and are 6196not 6197part of the ACPI spec. ACPICA BZ 860. 6198 6199AcpiExec: added option to disable the memory tracking mechanism. The -dt 6200option will disable the tracking mechanism, which improves performance 6201considerably. 6202 6203AcpiExec: Restructured the command line options into -d (disable) and -e 6204(enable) options. 6205 6206---------------------------------------- 620728 April 2010. Summary of changes for version 20100428: 6208 62091) ACPI CA Core Subsystem: 6210 6211Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 6212including FADT-based and GPE Block Devices, execute any _PRW methods in 6213the 6214new table, and process any _Lxx/_Exx GPE methods in the new table. Any 6215runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 6216immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 6217Devices. Provides compatibility with other ACPI implementations. Two new 6218files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob 6219Moore. 6220 6221Fixed a regression introduced in version 20100331 within the table 6222manager 6223where initial table loading could fail. This was introduced in the fix 6224for 6225AcpiReallocateRootTable. Also, renamed some of fields in the table 6226manager 6227data structures to clarify their meaning and use. 6228 6229Fixed a possible allocation overrun during internal object copy in 6230AcpiUtCopySimpleObject. The original code did not correctly handle the 6231case 6232where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 6233847. 6234 6235Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 6236possible access beyond end-of-allocation. Also, now fully validate 6237descriptor 6238(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 6239 6240Example Code and Data Size: These are the sizes for the OS-independent 6241acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6242debug version of the code includes the debug output trace mechanism and 6243has a 6244much larger code and data size. 6245 6246 Previous Release: 6247 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 6248 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 6249 Current Release: 6250 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 6251 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 6252 62532) iASL Compiler/Disassembler and Tools: 6254 6255iASL: Implemented Min/Max/Len/Gran validation for address resource 6256descriptors. This change implements validation for the address fields 6257that 6258are common to all address-type resource descriptors. These checks are 6259implemented: Checks for valid Min/Max, length within the Min/Max window, 6260valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as 6261per 6262table 6-40 in the ACPI 4.0a specification. Also split the large 6263aslrestype1.c 6264and aslrestype2.c files into five new files. ACPICA BZ 840. 6265 6266iASL: Added support for the _Wxx predefined names. This support was 6267missing 6268and these names were not recognized by the compiler as valid predefined 6269names. ACPICA BZ 851. 6270 6271iASL: Added an error for all predefined names that are defined to return 6272no 6273value and thus must be implemented as Control Methods. These include all 6274of 6275the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 6276names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 6277 6278iASL: Implemented the -ts option to emit hex AML data in ASL format, as 6279an 6280ASL Buffer. Allows ACPI tables to be easily included within ASL files, to 6281be 6282dynamically loaded via the Load() operator. Also cleaned up output for 6283the 6284- 6285ta and -tc options. ACPICA BZ 853. 6286 6287Tests: Added a new file with examples of extended iASL error checking. 6288Demonstrates the advanced error checking ability of the iASL compiler. 6289Available at tests/misc/badcode.asl. 6290 6291---------------------------------------- 629231 March 2010. Summary of changes for version 20100331: 6293 62941) ACPI CA Core Subsystem: 6295 6296Completed a major update for the GPE support in order to improve support 6297for 6298shared GPEs and to simplify both host OS and ACPICA code. Added a 6299reference 6300count mechanism to support shared GPEs that require multiple device 6301drivers. 6302Several external interfaces have changed. One external interface has been 6303removed. One new external interface was added. Most of the GPE external 6304interfaces now use the GPE spinlock instead of the events mutex (and the 6305Flags parameter for many GPE interfaces has been removed.) See the 6306updated 6307ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, 6308Rafael 6309Wysocki. ACPICA BZ 831. 6310 6311Changed: 6312 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 6313Removed: 6314 AcpiSetGpeType 6315New: 6316 AcpiSetGpe 6317 6318Implemented write support for DataTable operation regions. These regions 6319are 6320defined via the DataTableRegion() operator. Previously, only read support 6321was 6322implemented. The ACPI specification allows DataTableRegions to be 6323read/write, 6324however. 6325 6326Implemented a new subsystem option to force a copy of the DSDT to local 6327memory. Optionally copy the entire DSDT to local memory (instead of 6328simply 6329mapping it.) There are some (albeit very rare) BIOSs that corrupt or 6330replace 6331the original DSDT, creating the need for this option. Default is FALSE, 6332do 6333not copy the DSDT. 6334 6335Implemented detection of a corrupted or replaced DSDT. This change adds 6336support to detect a DSDT that has been corrupted and/or replaced from 6337outside 6338the OS (by firmware). This is typically catastrophic for the system, but 6339has 6340been seen on some machines. Once this problem has been detected, the DSDT 6341copy option can be enabled via system configuration. Lin Ming, Bob Moore. 6342 6343Fixed two problems with AcpiReallocateRootTable during the root table 6344copy. 6345When copying the root table to the new allocation, the length used was 6346incorrect. The new size was used instead of the current table size, 6347meaning 6348too much data was copied. Also, the count of available slots for ACPI 6349tables 6350was not set correctly. Alexey Starikovskiy, Bob Moore. 6351 6352Example Code and Data Size: These are the sizes for the OS-independent 6353acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6354debug version of the code includes the debug output trace mechanism and 6355has a 6356much larger code and data size. 6357 6358 Previous Release: 6359 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 6360 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 6361 Current Release: 6362 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 6363 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 6364 63652) iASL Compiler/Disassembler and Tools: 6366 6367iASL: Implement limited typechecking for values returned from predefined 6368control methods. The type of any returned static (unnamed) object is now 6369validated. For example, Return(1). ACPICA BZ 786. 6370 6371iASL: Fixed a predefined name object verification regression. Fixes a 6372problem 6373introduced in version 20100304. An error is incorrectly generated if a 6374predefined name is declared as a static named object with a value defined 6375using the keywords "Zero", "One", or "Ones". Lin Ming. 6376 6377iASL: Added Windows 7 support for the -g option (get local ACPI tables) 6378by 6379reducing the requested registry access rights. ACPICA BZ 842. 6380 6381Disassembler: fixed a possible fault when generating External() 6382statements. 6383Introduced in commit ae7d6fd: Properly handle externals with parent- 6384prefix 6385(carat). Fixes a string length allocation calculation. Lin Ming. 6386 6387---------------------------------------- 638804 March 2010. Summary of changes for version 20100304: 6389 63901) ACPI CA Core Subsystem: 6391 6392Fixed a possible problem with the AML Mutex handling function 6393AcpiExReleaseMutex where the function could fault under the very rare 6394condition when the interpreter has blocked, the interpreter lock is 6395released, 6396the interpreter is then reentered via the same thread, and attempts to 6397acquire an AML mutex that was previously acquired. FreeBSD report 140979. 6398Lin 6399Ming. 6400 6401Implemented additional configuration support for the AML "Debug Object". 6402Output from the debug object can now be enabled via a global variable, 6403AcpiGbl_EnableAmlDebugObject. This will assist with remote machine 6404debugging. 6405This debug output is now available in the release version of ACPICA 6406instead 6407of just the debug version. Also, the entire debug output module can now 6408be 6409configured out of the ACPICA build if desired. One new file added, 6410executer/exdebug.c. Lin Ming, Bob Moore. 6411 6412Added header support for the ACPI MCHI table (Management Controller Host 6413Interface Table). This table was added in ACPI 4.0, but the defining 6414document 6415has only recently become available. 6416 6417Standardized output of integer values for ACPICA warnings/errors. Always 6418use 64190x prefix for hex output, always use %u for unsigned integer decimal 6420output. 6421Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 6422400 6423invocations.) These invocations were converted from the original 6424ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 6425 6426Example Code and Data Size: These are the sizes for the OS-independent 6427acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6428debug version of the code includes the debug output trace mechanism and 6429has a 6430much larger code and data size. 6431 6432 Previous Release: 6433 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 6434 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 6435 Current Release: 6436 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 6437 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 6438 64392) iASL Compiler/Disassembler and Tools: 6440 6441iASL: Implemented typechecking support for static (non-control method) 6442predefined named objects that are declared with the Name() operator. For 6443example, the type of this object is now validated to be of type Integer: 6444Name(_BBN, 1). This change migrates the compiler to using the core 6445predefined 6446name table instead of maintaining a local version. Added a new file, 6447aslpredef.c. ACPICA BZ 832. 6448 6449Disassembler: Added support for the ACPI 4.0 MCHI table. 6450 6451---------------------------------------- 645221 January 2010. Summary of changes for version 20100121: 6453 64541) ACPI CA Core Subsystem: 6455 6456Added the 2010 copyright to all module headers and signons. This affects 6457virtually every file in the ACPICA core subsystem, the iASL compiler, the 6458tools/utilities, and the test suites. 6459 6460Implemented a change to the AcpiGetDevices interface to eliminate 6461unnecessary 6462invocations of the _STA method. In the case where a specific _HID is 6463requested, do not run _STA until a _HID match is found. This eliminates 6464potentially dozens of _STA calls during a search for a particular 6465device/HID, 6466which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 6467 6468Implemented an additional repair for predefined method return values. 6469Attempt 6470to repair unexpected NULL elements within returned Package objects. 6471Create 6472an 6473Integer of value zero, a NULL String, or a zero-length Buffer as 6474appropriate. 6475ACPICA BZ 818. Lin Ming, Bob Moore. 6476 6477Removed the obsolete ACPI_INTEGER data type. This type was introduced as 6478the 6479code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 6480(with 648164-bit AML integers). It is now obsolete and this change removes it from 6482the 6483ACPICA code base, replaced by UINT64. The original typedef has been 6484retained 6485for now for compatibility with existing device driver code. ACPICA BZ 6486824. 6487 6488Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field 6489in 6490the parse tree object. 6491 6492Added additional warning options for the gcc-4 generation. Updated the 6493source 6494accordingly. This includes some code restructuring to eliminate 6495unreachable 6496code, elimination of some gotos, elimination of unused return values, 6497some 6498additional casting, and removal of redundant declarations. 6499 6500Example Code and Data Size: These are the sizes for the OS-independent 6501acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6502debug version of the code includes the debug output trace mechanism and 6503has a 6504much larger code and data size. 6505 6506 Previous Release: 6507 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 6508 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 6509 Current Release: 6510 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 6511 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 6512 65132) iASL Compiler/Disassembler and Tools: 6514 6515No functional changes for this release. 6516 6517---------------------------------------- 651814 December 2009. Summary of changes for version 20091214: 6519 65201) ACPI CA Core Subsystem: 6521 6522Enhanced automatic data type conversions for predefined name repairs. 6523This 6524change expands the automatic repairs/conversions for predefined name 6525return 6526values to make Integers, Strings, and Buffers fully interchangeable. 6527Also, 6528a 6529Buffer can be converted to a Package of Integers if necessary. The 6530nsrepair.c 6531module was completely restructured. Lin Ming, Bob Moore. 6532 6533Implemented automatic removal of null package elements during predefined 6534name 6535repairs. This change will automatically remove embedded and trailing NULL 6536package elements from returned package objects that are defined to 6537contain 6538a 6539variable number of sub-packages. The driver is then presented with a 6540package 6541with no null elements to deal with. ACPICA BZ 819. 6542 6543Implemented a repair for the predefined _FDE and _GTM names. The expected 6544return value for both names is a Buffer of 5 DWORDs. This repair fixes 6545two 6546possible problems (both seen in the field), where a package of integers 6547is 6548returned, or a buffer of BYTEs is returned. With assistance from Jung-uk 6549Kim. 6550 6551Implemented additional module-level code support. This change will 6552properly 6553execute module-level code that is not at the root of the namespace (under 6554a 6555Device object, etc.). Now executes the code within the current scope 6556instead 6557of the root. ACPICA BZ 762. Lin Ming. 6558 6559Fixed possible mutex acquisition errors when running _REG methods. Fixes 6560a 6561problem where mutex errors can occur when running a _REG method that is 6562in 6563the same scope as a method-defined operation region or an operation 6564region 6565under a module-level IF block. This type of code is rare, so the problem 6566has 6567not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 6568 6569Fixed a possible memory leak during module-level code execution. An 6570object 6571could be leaked for each block of executed module-level code if the 6572interpreter slack mode is enabled This change deletes any implicitly 6573returned 6574object from the module-level code block. Lin Ming. 6575 6576Removed messages for successful predefined repair(s). The repair 6577mechanism 6578was considered too wordy. Now, messages are only unconditionally emitted 6579if 6580the return object cannot be repaired. Existing messages for successful 6581repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 6582827. 6583 6584Example Code and Data Size: These are the sizes for the OS-independent 6585acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6586debug version of the code includes the debug output trace mechanism and 6587has a 6588much larger code and data size. 6589 6590 Previous Release: 6591 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 6592 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 6593 Current Release: 6594 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 6595 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 6596 65972) iASL Compiler/Disassembler and Tools: 6598 6599iASL: Fixed a regression introduced in 20091112 where intermediate .SRC 6600files 6601were no longer automatically removed at the termination of the compile. 6602 6603acpiexec: Implemented the -f option to specify default region fill value. 6604This option specifies the value used to initialize buffers that simulate 6605operation regions. Default value is zero. Useful for debugging problems 6606that 6607depend on a specific initial value for a region or field. 6608 6609---------------------------------------- 661012 November 2009. Summary of changes for version 20091112: 6611 66121) ACPI CA Core Subsystem: 6613 6614Implemented a post-order callback to AcpiWalkNamespace. The existing 6615interface only has a pre-order callback. This change adds an additional 6616parameter for a post-order callback which will be more useful for bus 6617scans. 6618ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 6619 6620Modified the behavior of the operation region memory mapping cache for 6621SystemMemory. Ensure that the memory mappings created for operation 6622regions 6623do not cross 4K page boundaries. Crossing a page boundary while mapping 6624regions can cause kernel warnings on some hosts if the pages have 6625different 6626attributes. Such regions are probably BIOS bugs, and this is the 6627workaround. 6628Linux BZ 14445. Lin Ming. 6629 6630Implemented an automatic repair for predefined methods that must return 6631sorted lists. This change will repair (by sorting) packages returned by 6632_ALR, 6633_PSS, and _TSS. Drivers can now assume that the packages are correctly 6634sorted 6635and do not contain NULL package elements. Adds one new file, 6636namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 6637 6638Fixed a possible fault during predefined name validation if a return 6639Package 6640object contains NULL elements. Also adds a warning if a NULL element is 6641followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement 6642may 6643include repair or removal of all such NULL elements where possible. 6644 6645Implemented additional module-level executable AML code support. This 6646change 6647will execute module-level code that is not at the root of the namespace 6648(under a Device object, etc.) at table load time. Module-level executable 6649AML 6650code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 6651 6652Implemented a new internal function to create Integer objects. This 6653function 6654simplifies miscellaneous object creation code. ACPICA BZ 823. 6655 6656Reduced the severity of predefined repair messages, Warning to Info. 6657Since 6658the object was successfully repaired, a warning is too severe. Reduced to 6659an 6660info message for now. These messages may eventually be changed to debug- 6661only. 6662ACPICA BZ 812. 6663 6664Example Code and Data Size: These are the sizes for the OS-independent 6665acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6666debug version of the code includes the debug output trace mechanism and 6667has a 6668much larger code and data size. 6669 6670 Previous Release: 6671 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 6672 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 6673 Current Release: 6674 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 6675 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 6676 66772) iASL Compiler/Disassembler and Tools: 6678 6679iASL: Implemented Switch() with While(1) so that Break works correctly. 6680This 6681change correctly implements the Switch operator with a surrounding 6682While(1) 6683so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 6684 6685iASL: Added a message if a package initializer list is shorter than 6686package 6687length. Adds a new remark for a Package() declaration if an initializer 6688list 6689exists, but is shorter than the declared length of the package. Although 6690technically legal, this is probably a coding error and it is seen in the 6691field. ACPICA BZ 815. Lin Ming, Bob Moore. 6692 6693iASL: Fixed a problem where the compiler could fault after the maximum 6694number 6695of errors was reached (200). 6696 6697acpixtract: Fixed a possible warning for pointer cast if the compiler 6698warning 6699level set very high. 6700 6701---------------------------------------- 670213 October 2009. Summary of changes for version 20091013: 6703 67041) ACPI CA Core Subsystem: 6705 6706Fixed a problem where an Operation Region _REG method could be executed 6707more 6708than once. If a custom address space handler is installed by the host 6709before 6710the "initialize operation regions" phase of the ACPICA initialization, 6711any 6712_REG methods for that address space could be executed twice. This change 6713fixes the problem. ACPICA BZ 427. Lin Ming. 6714 6715Fixed a possible memory leak for the Scope() ASL operator. When the exact 6716invocation of "Scope(\)" is executed (change scope to root), one internal 6717operand object was leaked. Lin Ming. 6718 6719Implemented a run-time repair for the _MAT predefined method. If the _MAT 6720return value is defined as a Field object in the AML, and the field 6721size is less than or equal to the default width of an integer (32 or 672264),_MAT 6723can incorrectly return an Integer instead of a Buffer. ACPICA now 6724automatically repairs this problem. ACPICA BZ 810. 6725 6726Implemented a run-time repair for the _BIF and _BIX predefined methods. 6727The 6728"OEM Information" field is often incorrectly returned as an Integer with 6729value zero if the field is not supported by the platform. This is due to 6730an 6731ambiguity in the ACPI specification. The field should always be a string. 6732ACPICA now automatically repairs this problem by returning a NULL string 6733within the returned Package. ACPICA BZ 807. 6734 6735Example Code and Data Size: These are the sizes for the OS-independent 6736acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6737debug version of the code includes the debug output trace mechanism and 6738has a 6739much larger code and data size. 6740 6741 Previous Release: 6742 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 6743 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 6744 Current Release: 6745 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 6746 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 6747 67482) iASL Compiler/Disassembler and Tools: 6749 6750Disassembler: Fixed a problem where references to external symbols that 6751contained one or more parent-prefixes (carats) were not handled 6752correctly, 6753possibly causing a fault. ACPICA BZ 806. Lin Ming. 6754 6755Disassembler: Restructured the code so that all functions that handle 6756external symbols are in a single module. One new file is added, 6757common/dmextern.c. 6758 6759AML Debugger: Added a max count argument for the Batch command (which 6760executes multiple predefined methods within the namespace.) 6761 6762iASL: Updated the compiler documentation (User Reference.) Available at 6763http://www.acpica.org/documentation/. ACPICA BZ 750. 6764 6765AcpiXtract: Updated for Lint and other formatting changes. Close all open 6766files. 6767 6768---------------------------------------- 676903 September 2009. Summary of changes for version 20090903: 6770 67711) ACPI CA Core Subsystem: 6772 6773For Windows Vista compatibility, added the automatic execution of an _INI 6774method located at the namespace root (\_INI). This method is executed at 6775table load time. This support is in addition to the automatic execution 6776of 6777\_SB._INI. Lin Ming. 6778 6779Fixed a possible memory leak in the interpreter for AML package objects 6780if 6781the package initializer list is longer than the defined size of the 6782package. 6783This apparently can only happen if the BIOS changes the package size on 6784the 6785fly (seen in a _PSS object), as ASL compilers do not allow this. The 6786interpreter will truncate the package to the defined size (and issue an 6787error 6788message), but previously could leave the extra objects undeleted if they 6789were 6790pre-created during the argument processing (such is the case if the 6791package 6792consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 6793 6794Fixed a problem seen when a Buffer or String is stored to itself via ASL. 6795This has been reported in the field. Previously, ACPICA would zero out 6796the 6797buffer/string. Now, the operation is treated as a noop. Provides Windows 6798compatibility. ACPICA BZ 803. Lin Ming. 6799 6800Removed an extraneous error message for ASL constructs of the form 6801Store(LocalX,LocalX) when LocalX is uninitialized. These curious 6802statements 6803are seen in many BIOSs and are once again treated as NOOPs and no error 6804is 6805emitted when they are encountered. ACPICA BZ 785. 6806 6807Fixed an extraneous warning message if a _DSM reserved method returns a 6808Package object. _DSM can return any type of object, so validation on the 6809return type cannot be performed. ACPICA BZ 802. 6810 6811Example Code and Data Size: These are the sizes for the OS-independent 6812acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6813debug version of the code includes the debug output trace mechanism and 6814has a 6815much larger code and data size. 6816 6817 Previous Release: 6818 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 6819 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 6820 Current Release: 6821 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 6822 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 6823 68242) iASL Compiler/Disassembler and Tools: 6825 6826iASL: Fixed a problem with the use of the Alias operator and Resource 6827Templates. The correct alias is now constructed and no error is emitted. 6828ACPICA BZ 738. 6829 6830iASL: Implemented the -I option to specify additional search directories 6831for 6832include files. Allows multiple additional search paths for include files. 6833Directories are searched in the order specified on the command line 6834(after 6835the local directory is searched.) ACPICA BZ 800. 6836 6837iASL: Fixed a problem where the full pathname for include files was not 6838emitted for warnings/errors. This caused the IDE support to not work 6839properly. ACPICA BZ 765. 6840 6841iASL: Implemented the -@ option to specify a Windows-style response file 6842containing additional command line options. ACPICA BZ 801. 6843 6844AcpiExec: Added support to load multiple AML files simultaneously (such 6845as 6846a 6847DSDT and multiple SSDTs). Also added support for wildcards within the AML 6848pathname. These features allow all machine tables to be easily loaded and 6849debugged together. ACPICA BZ 804. 6850 6851Disassembler: Added missing support for disassembly of HEST table Error 6852Bank 6853subtables. 6854 6855---------------------------------------- 685630 July 2009. Summary of changes for version 20090730: 6857 6858The ACPI 4.0 implementation for ACPICA is complete with this release. 6859 68601) ACPI CA Core Subsystem: 6861 6862ACPI 4.0: Added header file support for all new and changed ACPI tables. 6863Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are 6864new 6865for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, 6866BERT, 6867EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. 6868There 6869have been some ACPI 4.0 changes to other existing tables. Split the large 6870actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 6871 6872ACPI 4.0: Implemented predefined name validation for all new names. There 6873are 687431 new names in ACPI 4.0. The predefined validation module was split into 6875two 6876files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 6877 6878Implemented support for so-called "module-level executable code". This is 6879executable AML code that exists outside of any control method and is 6880intended 6881to be executed at table load time. Although illegal since ACPI 2.0, this 6882type 6883of code still exists and is apparently still being created. Blocks of 6884this 6885code are now detected and executed as intended. Currently, the code 6886blocks 6887must exist under either an If, Else, or While construct; these are the 6888typical cases seen in the field. ACPICA BZ 762. Lin Ming. 6889 6890Implemented an automatic dynamic repair for predefined names that return 6891nested Package objects. This applies to predefined names that are defined 6892to 6893return a variable-length Package of sub-packages. If the number of sub- 6894packages is one, BIOS code is occasionally seen that creates a simple 6895single 6896package with no sub-packages. This code attempts to fix the problem by 6897wrapping a new package object around the existing package. These methods 6898can 6899be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA 6900BZ 6901790. 6902 6903Fixed a regression introduced in 20090625 for the AcpiGetDevices 6904interface. 6905The _HID/_CID matching was broken and no longer matched IDs correctly. 6906ACPICA 6907BZ 793. 6908 6909Fixed a problem with AcpiReset where the reset would silently fail if the 6910register was one of the protected I/O ports. AcpiReset now bypasses the 6911port 6912validation mechanism. This may eventually be driven into the 6913AcpiRead/Write 6914interfaces. 6915 6916Fixed a regression related to the recent update of the AcpiRead/Write 6917interfaces. A sleep/suspend could fail if the optional PM2 Control 6918register 6919does not exist during an attempt to write the Bus Master Arbitration bit. 6920(However, some hosts already delete the code that writes this bit, and 6921the 6922code may in fact be obsolete at this date.) ACPICA BZ 799. 6923 6924Fixed a problem where AcpiTerminate could fault if inadvertently called 6925twice 6926in succession. ACPICA BZ 795. 6927 6928Example Code and Data Size: These are the sizes for the OS-independent 6929acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6930debug version of the code includes the debug output trace mechanism and 6931has a 6932much larger code and data size. 6933 6934 Previous Release: 6935 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 6936 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 6937 Current Release: 6938 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 6939 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 6940 69412) iASL Compiler/Disassembler and Tools: 6942 6943ACPI 4.0: Implemented disassembler support for all new ACPI tables and 6944changes to existing tables. ACPICA BZ 775. 6945 6946---------------------------------------- 694725 June 2009. Summary of changes for version 20090625: 6948 6949The ACPI 4.0 Specification was released on June 16 and is available at 6950www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 6951continue for the next few releases. 6952 69531) ACPI CA Core Subsystem: 6954 6955ACPI 4.0: Implemented interpreter support for the IPMI operation region 6956address space. Includes support for bi-directional data buffers and an 6957IPMI 6958address space handler (to be installed by an IPMI device driver.) ACPICA 6959BZ 6960773. Lin Ming. 6961 6962ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. 6963Includes 6964support in both the header files and the disassembler. 6965 6966Completed a major update for the AcpiGetObjectInfo external interface. 6967Changes include: 6968 - Support for variable, unlimited length HID, UID, and CID strings. 6969 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, 6970etc.) 6971 - Call the _SxW power methods on behalf of a device object. 6972 - Determine if a device is a PCI root bridge. 6973 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 6974These changes will require an update to all callers of this interface. 6975See 6976the updated ACPICA Programmer Reference for details. One new source file 6977has 6978been added - utilities/utids.c. ACPICA BZ 368, 780. 6979 6980Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 6981transfers. The Value parameter has been extended from 32 bits to 64 bits 6982in 6983order to support new ACPI 4.0 tables. These changes will require an 6984update 6985to 6986all callers of these interfaces. See the ACPICA Programmer Reference for 6987details. ACPICA BZ 768. 6988 6989Fixed several problems with AcpiAttachData. The handler was not invoked 6990when 6991the host node was deleted. The data sub-object was not automatically 6992deleted 6993when the host node was deleted. The interface to the handler had an 6994unused 6995parameter, this was removed. ACPICA BZ 778. 6996 6997Enhanced the function that dumps ACPI table headers. All non-printable 6998characters in the string fields are now replaced with '?' (Signature, 6999OemId, 7000OemTableId, and CompilerId.) ACPI tables with non-printable characters in 7001these fields are occasionally seen in the field. ACPICA BZ 788. 7002 7003Fixed a problem with predefined method repair code where the code that 7004attempts to repair/convert an object of incorrect type is only executed 7005on 7006the first time the predefined method is called. The mechanism that 7007disables 7008warnings on subsequent calls was interfering with the repair mechanism. 7009ACPICA BZ 781. 7010 7011Fixed a possible memory leak in the predefined validation/repair code 7012when 7013a 7014buffer is automatically converted to an expected string object. 7015 7016Removed obsolete 16-bit files from the distribution and from the current 7017git 7018tree head. ACPICA BZ 776. 7019 7020Example Code and Data Size: These are the sizes for the OS-independent 7021acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7022debug version of the code includes the debug output trace mechanism and 7023has a 7024much larger code and data size. 7025 7026 Previous Release: 7027 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 7028 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 7029 Current Release: 7030 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 7031 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 7032 70332) iASL Compiler/Disassembler and Tools: 7034 7035ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 7036operation region keyword. ACPICA BZ 771, 772. Lin Ming. 7037 7038ACPI 4.0: iASL - implemented compile-time validation support for all new 7039predefined names and control methods (31 total). ACPICA BZ 769. 7040 7041---------------------------------------- 704221 May 2009. Summary of changes for version 20090521: 7043 70441) ACPI CA Core Subsystem: 7045 7046Disabled the preservation of the SCI enable bit in the PM1 control 7047register. 7048The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification 7049to 7050be 7051a "preserved" bit - "OSPM always preserves this bit position", section 70524.7.3.2.1. However, some machines fail if this bit is in fact preserved 7053because the bit needs to be explicitly set by the OS as a workaround. No 7054machines fail if the bit is not preserved. Therefore, ACPICA no longer 7055attempts to preserve this bit. 7056 7057Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 7058incorrectly formed _PRT package could cause a fault. Added validation to 7059ensure that each package element is actually a sub-package. 7060 7061Implemented a new interface to install or override a single control 7062method, 7063AcpiInstallMethod. This interface is useful when debugging in order to 7064repair 7065an existing method or to install a missing method without having to 7066override 7067the entire ACPI table. See the ACPICA Programmer Reference for use and 7068examples. Lin Ming, Bob Moore. 7069 7070Fixed several reference count issues with the DdbHandle object that is 7071created from a Load or LoadTable operator. Prevent premature deletion of 7072the 7073object. Also, mark the object as invalid once the table has been 7074unloaded. 7075This is needed because the handle itself may not be deleted after the 7076table 7077unload, depending on whether it has been stored in a named object by the 7078caller. Lin Ming. 7079 7080Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 7081mutexes of the same sync level are acquired but then not released in 7082strict 7083opposite order, the internally maintained Current Sync Level becomes 7084confused 7085and can cause subsequent execution errors. ACPICA BZ 471. 7086 7087Changed the allowable release order for ASL mutex objects. The ACPI 4.0 7088specification has been changed to make the SyncLevel for mutex objects 7089more 7090useful. When releasing a mutex, the SyncLevel of the mutex must now be 7091the 7092same as the current sync level. This makes more sense than the previous 7093rule 7094(SyncLevel less than or equal). This change updates the code to match the 7095specification. 7096 7097Fixed a problem with the local version of the AcpiOsPurgeCache function. 7098The 7099(local) cache must be locked during all cache object deletions. Andrew 7100Baumann. 7101 7102Updated the Load operator to use operation region interfaces. This 7103replaces 7104direct memory mapping with region access calls. Now, all region accesses 7105go 7106through the installed region handler as they should. 7107 7108Simplified and optimized the NsGetNextNode function. Reduced parameter 7109count 7110and reduced code for this frequently used function. 7111 7112Example Code and Data Size: These are the sizes for the OS-independent 7113acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7114debug version of the code includes the debug output trace mechanism and 7115has a 7116much larger code and data size. 7117 7118 Previous Release: 7119 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 7120 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 7121 Current Release: 7122 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 7123 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 7124 71252) iASL Compiler/Disassembler and Tools: 7126 7127Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some 7128problems 7129with sub-table disassembly and handling invalid sub-tables. Attempt 7130recovery 7131after an invalid sub-table ID. 7132 7133---------------------------------------- 713422 April 2009. Summary of changes for version 20090422: 7135 71361) ACPI CA Core Subsystem: 7137 7138Fixed a compatibility issue with the recently released I/O port 7139protection 7140mechanism. For windows compatibility, 1) On a port protection violation, 7141simply ignore the request and do not return an exception (allow the 7142control 7143method to continue execution.) 2) If only part of the request overlaps a 7144protected port, read/write the individual ports that are not protected. 7145Linux 7146BZ 13036. Lin Ming 7147 7148Enhanced the execution of the ASL/AML BreakPoint operator so that it 7149actually 7150breaks into the AML debugger if the debugger is present. This matches the 7151ACPI-defined behavior. 7152 7153Fixed several possible warnings related to the use of the configurable 7154ACPI_THREAD_ID. This type can now be configured as either an integer or a 7155pointer with no warnings. Also fixes several warnings in printf-like 7156statements for the 64-bit build when the type is configured as a pointer. 7157ACPICA BZ 766, 767. 7158 7159Fixed a number of possible warnings when compiling with gcc 4+ (depending 7160on 7161warning options.) Examples include printf formats, aliasing, unused 7162globals, 7163missing prototypes, missing switch default statements, use of non-ANSI 7164library functions, use of non-ANSI constructs. See generate/unix/Makefile 7165for 7166a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 7167 7168Example Code and Data Size: These are the sizes for the OS-independent 7169acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7170debug version of the code includes the debug output trace mechanism and 7171has a 7172much larger code and data size. 7173 7174 Previous Release: 7175 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 7176 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 7177 Current Release: 7178 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 7179 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 7180 71812) iASL Compiler/Disassembler and Tools: 7182 7183iASL: Fixed a generation warning from Bison 2.3 and fixed several 7184warnings 7185on 7186the 64-bit build. 7187 7188iASL: Fixed a problem where the Unix/Linux versions of the compiler could 7189not 7190correctly digest Windows/DOS formatted files (with CR/LF). 7191 7192iASL: Added a new option for "quiet mode" (-va) that produces only the 7193compilation summary, not individual errors and warnings. Useful for large 7194batch compilations. 7195 7196AcpiExec: Implemented a new option (-z) to enable a forced 7197semaphore/mutex 7198timeout that can be used to detect hang conditions during execution of 7199AML 7200code (includes both internal semaphores and AML-defined mutexes and 7201events.) 7202 7203Added new makefiles for the generation of acpica in a generic unix-like 7204environment. These makefiles are intended to generate the acpica tools 7205and 7206utilities from the original acpica git source tree structure. 7207 7208Test Suites: Updated and cleaned up the documentation files. Updated the 7209copyrights to 2009, affecting all source files. Use the new version of 7210iASL 7211with quiet mode. Increased the number of available semaphores in the 7212Windows 7213OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, 7214added 7215an alternate implementation of the semaphore timeout to allow aslts to 7216execute fully on Cygwin. 7217 7218---------------------------------------- 721920 March 2009. Summary of changes for version 20090320: 7220 72211) ACPI CA Core Subsystem: 7222 7223Fixed a possible race condition between AcpiWalkNamespace and dynamic 7224table 7225unloads. Added a reader/writer locking mechanism to allow multiple 7226concurrent 7227namespace walks (readers), but block a dynamic table unload until it can 7228gain 7229exclusive write access to the namespace. This fixes a problem where a 7230table 7231unload could (possibly catastrophically) delete the portion of the 7232namespace 7233that is currently being examined by a walk. Adds a new file, utlock.c, 7234that 7235implements the reader/writer lock mechanism. ACPICA BZ 749. 7236 7237Fixed a regression introduced in version 20090220 where a change to the 7238FADT 7239handling could cause the ACPICA subsystem to access non-existent I/O 7240ports. 7241 7242Modified the handling of FADT register and table (FACS/DSDT) addresses. 7243The 7244FADT can contain both 32-bit and 64-bit versions of these addresses. 7245Previously, the 64-bit versions were favored, meaning that if both 32 and 724664 7247versions were valid, but not equal, the 64-bit version was used. This was 7248found to cause some machines to fail. Now, in this case, the 32-bit 7249version 7250is used instead. This now matches the Windows behavior. 7251 7252Implemented a new mechanism to protect certain I/O ports. Provides 7253Microsoft 7254compatibility and protects the standard PC I/O ports from access via AML 7255code. Adds a new file, hwvalid.c 7256 7257Fixed a possible extraneous warning message from the FADT support. The 7258message warns of a 32/64 length mismatch between the legacy and GAS 7259definitions for a register. 7260 7261Removed the obsolete AcpiOsValidateAddress OSL interface. This interface 7262is 7263made obsolete by the port protection mechanism above. It was previously 7264used 7265to validate the entire address range of an operation region, which could 7266be 7267incorrect if the range included illegal ports, but fields within the 7268operation region did not actually access those ports. Validation is now 7269performed on a per-field basis instead of the entire region. 7270 7271Modified the handling of the PM1 Status Register ignored bit (bit 11.) 7272Ignored bits must be "preserved" according to the ACPI spec. Usually, 7273this 7274means a read/modify/write when writing to the register. However, for 7275status 7276registers, writing a one means clear the event. Writing a zero means 7277preserve 7278the event (do not clear.) This behavior is clarified in the ACPI 4.0 7279spec, 7280and the ACPICA code now simply always writes a zero to the ignored bit. 7281 7282Modified the handling of ignored bits for the PM1 A/B Control Registers. 7283As 7284per the ACPI specification, for the control registers, preserve 7285(read/modify/write) all bits that are defined as either reserved or 7286ignored. 7287 7288Updated the handling of write-only bits in the PM1 A/B Control Registers. 7289When reading the register, zero the write-only bits as per the ACPI spec. 7290ACPICA BZ 443. Lin Ming. 7291 7292Removed "Linux" from the list of supported _OSI strings. Linux no longer 7293wants to reply true to this request. The Windows strings are the only 7294paths 7295through the AML that are tested and known to work properly. 7296 7297 Previous Release: 7298 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 7299 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 7300 Current Release: 7301 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 7302 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 7303 73042) iASL Compiler/Disassembler and Tools: 7305 7306Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c 7307and 7308aetables.c 7309 7310---------------------------------------- 731120 February 2009. Summary of changes for version 20090220: 7312 73131) ACPI CA Core Subsystem: 7314 7315Optimized the ACPI register locking. Removed locking for reads from the 7316ACPI 7317bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock 7318is 7319not required when reading the single-bit registers. The 7320AcpiGetRegisterUnlocked function is no longer needed and has been 7321removed. 7322This will improve performance for reads on these registers. ACPICA BZ 7323760. 7324 7325Fixed the parameter validation for AcpiRead/Write. Now return 7326AE_BAD_PARAMETER if the input register pointer is null, and 7327AE_BAD_ADDRESS 7328if 7329the register has an address of zero. Previously, these cases simply 7330returned 7331AE_OK. For optional registers such as PM1B status/enable/control, the 7332caller 7333should check for a valid register address before calling. ACPICA BZ 748. 7334 7335Renamed the external ACPI bit register access functions. Renamed 7336AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 7337functions. The new names are AcpiReadBitRegister and 7338AcpiWriteBitRegister. 7339Also, restructured the code for these functions by simplifying the code 7340path 7341and condensing duplicate code to reduce code size. 7342 7343Added new functions to transparently handle the possibly split PM1 A/B 7344registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two 7345functions 7346now handle the split registers for PM1 Status, Enable, and Control. 7347ACPICA 7348BZ 7349746. 7350 7351Added a function to handle the PM1 control registers, 7352AcpiHwWritePm1Control. 7353This function writes both of the PM1 control registers (A/B). These 7354registers 7355are different than the PM1 A/B status and enable registers in that 7356different 7357values can be written to the A/B registers. Most notably, the SLP_TYP 7358bits 7359can be different, as per the values returned from the _Sx predefined 7360methods. 7361 7362Removed an extra register write within AcpiHwClearAcpiStatus. This 7363function 7364was writing an optional PM1B status register twice. The existing call to 7365the 7366low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 7367A/B 7368register. ACPICA BZ 751. 7369 7370Split out the PM1 Status registers from the FADT. Added new globals for 7371these 7372registers (A/B), similar to the way the PM1 Enable registers are handled. 7373Instead of overloading the FADT Event Register blocks. This makes the 7374code 7375clearer and less prone to error. 7376 7377Fixed the warning message for when the platform contains too many ACPI 7378tables 7379for the default size of the global root table data structure. The 7380calculation 7381for the truncation value was incorrect. 7382 7383Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 7384obsolete macro, since it is now a simple reference to ->common.type. 7385There 7386were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 7387 7388Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 7389TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 7390simply SLEEP_TYPE. ACPICA BZ 754. 7391 7392Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 7393function is only needed on 64-bit host operating systems and is thus not 7394included for 32-bit hosts. 7395 7396Debug output: print the input and result for invocations of the _OSI 7397reserved 7398control method via the ACPI_LV_INFO debug level. Also, reduced some of 7399the 7400verbosity of this debug level. Len Brown. 7401 7402Example Code and Data Size: These are the sizes for the OS-independent 7403acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7404debug version of the code includes the debug output trace mechanism and 7405has a 7406much larger code and data size. 7407 7408 Previous Release: 7409 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 7410 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 7411 Current Release: 7412 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 7413 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 7414 74152) iASL Compiler/Disassembler and Tools: 7416 7417Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 7418various legal performance profiles. 7419 7420---------------------------------------- 742123 January 2009. Summary of changes for version 20090123: 7422 74231) ACPI CA Core Subsystem: 7424 7425Added the 2009 copyright to all module headers and signons. This affects 7426virtually every file in the ACPICA core subsystem, the iASL compiler, and 7427the tools/utilities. 7428 7429Implemented a change to allow the host to override any ACPI table, 7430including 7431dynamically loaded tables. Previously, only the DSDT could be replaced by 7432the 7433host. With this change, the AcpiOsTableOverride interface is called for 7434each 7435table found in the RSDT/XSDT during ACPICA initialization, and also 7436whenever 7437a table is dynamically loaded via the AML Load operator. 7438 7439Updated FADT flag definitions, especially the Boot Architecture flags. 7440 7441Debugger: For the Find command, automatically pad the input ACPI name 7442with 7443underscores if the name is shorter than 4 characters. This enables a 7444match 7445with the actual namespace entry which is itself padded with underscores. 7446 7447Example Code and Data Size: These are the sizes for the OS-independent 7448acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7449debug version of the code includes the debug output trace mechanism and 7450has a 7451much larger code and data size. 7452 7453 Previous Release: 7454 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 7455 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 7456 Current Release: 7457 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 7458 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 7459 74602) iASL Compiler/Disassembler and Tools: 7461 7462Fix build error under Bison-2.4. 7463 7464Dissasembler: Enhanced FADT support. Added decoding of the Boot 7465Architecture 7466flags. Now decode all flags, regardless of the FADT version. Flag output 7467includes the FADT version which first defined each flag. 7468 7469The iASL -g option now dumps the RSDT to a file (in addition to the FADT 7470and 7471DSDT). Windows only. 7472 7473---------------------------------------- 747404 December 2008. Summary of changes for version 20081204: 7475 74761) ACPI CA Core Subsystem: 7477 7478The ACPICA Programmer Reference has been completely updated and revamped 7479for 7480this release. This includes updates to the external interfaces, OSL 7481interfaces, the overview sections, and the debugger reference. 7482 7483Several new ACPICA interfaces have been implemented and documented in the 7484programmer reference: 7485AcpiReset - Writes the reset value to the FADT-defined reset register. 7486AcpiDisableAllGpes - Disable all available GPEs. 7487AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 7488AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 7489AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 7490AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 7491AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 7492 7493Most of the public ACPI hardware-related interfaces have been moved to a 7494new 7495file, components/hardware/hwxface.c 7496 7497Enhanced the FADT parsing and low-level ACPI register access: The ACPI 7498register lengths within the FADT are now used, and the low level ACPI 7499register access no longer hardcodes the ACPI register lengths. Given that 7500there may be some risk in actually trusting the FADT register lengths, a 7501run- 7502time option was added to fall back to the default hardcoded lengths if 7503the 7504FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 7505option is set to true for now, and a warning is issued if a suspicious 7506FADT 7507register length is overridden with the default value. 7508 7509Fixed a reference count issue in NsRepairObject. This problem was 7510introduced 7511in version 20081031 as part of a fix to repair Buffer objects within 7512Packages. Lin Ming. 7513 7514Added semaphore support to the Linux/Unix application OS-services layer 7515(OSL). ACPICA BZ 448. Lin Ming. 7516 7517Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes 7518will 7519be implemented in the OSL, or will binary semaphores be used instead. 7520 7521Example Code and Data Size: These are the sizes for the OS-independent 7522acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7523debug version of the code includes the debug output trace mechanism and 7524has a 7525much larger code and data size. 7526 7527 Previous Release: 7528 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 7529 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 7530 Current Release: 7531 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 7532 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 7533 75342) iASL Compiler/Disassembler and Tools: 7535 7536iASL: Completed the '-e' option to include additional ACPI tables in 7537order 7538to 7539aid with disassembly and External statement generation. ACPICA BZ 742. 7540Lin 7541Ming. 7542 7543iASL: Removed the "named object in while loop" error. The compiler cannot 7544determine how many times a loop will execute. ACPICA BZ 730. 7545 7546Disassembler: Implemented support for FADT revision 2 (MS extension). 7547ACPICA 7548BZ 743. 7549 7550Disassembler: Updates for several ACPI data tables (HEST, EINJ, and 7551MCFG). 7552 7553---------------------------------------- 755431 October 2008. Summary of changes for version 20081031: 7555 75561) ACPI CA Core Subsystem: 7557 7558Restructured the ACPICA header files into public/private. acpi.h now 7559includes 7560only the "public" acpica headers. All other acpica headers are "private" 7561and 7562should not be included by acpica users. One new file, accommon.h is used 7563to 7564include the commonly used private headers for acpica code generation. 7565Future 7566plans include moving all private headers to a new subdirectory. 7567 7568Implemented an automatic Buffer->String return value conversion for 7569predefined ACPI methods. For these methods (such as _BIF), added 7570automatic 7571conversion for return objects that are required to be a String, but a 7572Buffer 7573was found instead. This can happen when reading string battery data from 7574an 7575operation region, because it used to be difficult to convert the data 7576from 7577buffer to string from within the ASL. Ensures that the host OS is 7578provided 7579with a valid null-terminated string. Linux BZ 11822. 7580 7581Updated the FACS waking vector interfaces. Split 7582AcpiSetFirmwareWakingVector 7583into two: one for the 32-bit vector, another for the 64-bit vector. This 7584is 7585required because the host OS must setup the wake much differently for 7586each 7587vector (real vs. protected mode, etc.) and the interface itself should 7588not 7589be 7590deciding which vector to use. Also, eliminated the 7591GetFirmwareWakingVector 7592interface, as it served no purpose (only the firmware reads the vector, 7593OS 7594only writes the vector.) ACPICA BZ 731. 7595 7596Implemented a mechanism to escape infinite AML While() loops. Added a 7597loop 7598counter to force exit from AML While loops if the count becomes too 7599large. 7600This can occur in poorly written AML when the hardware does not respond 7601within a while loop and the loop does not implement a timeout. The 7602maximum 7603loop count is configurable. A new exception code is returned when a loop 7604is 7605broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 7606 7607Optimized the execution of AML While loops. Previously, a control state 7608object was allocated and freed for each execution of the loop. The 7609optimization is to simply reuse the control state for each iteration. 7610This 7611speeds up the raw loop execution time by about 5%. 7612 7613Enhanced the implicit return mechanism. For Windows compatibility, return 7614an 7615implicit integer of value zero for methods that contain no executable 7616code. 7617Such methods are seen in the field as stubs (presumably), and can cause 7618drivers to fail if they expect a return value. Lin Ming. 7619 7620Allow multiple backslashes as root prefixes in namepaths. In a fully 7621qualified namepath, allow multiple backslash prefixes. This can happen 7622(and 7623is seen in the field) because of the use of a double-backslash in strings 7624(since backslash is the escape character) causing confusion. ACPICA BZ 7625739 7626Lin Ming. 7627 7628Emit a warning if two different FACS or DSDT tables are discovered in the 7629FADT. Checks if there are two valid but different addresses for the FACS 7630and 7631DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 7632 7633Consolidated the method argument count validation code. Merged the code 7634that 7635validates control method argument counts into the predefined validation 7636module. Eliminates possible multiple warnings for incorrect argument 7637counts. 7638 7639Implemented ACPICA example code. Includes code for ACPICA initialization, 7640handler installation, and calling a control method. Available at 7641source/tools/examples. 7642 7643Added a global pointer for FACS table to simplify internal FACS access. 7644Use 7645the global pointer instead of using AcpiGetTableByIndex for each FACS 7646access. 7647This simplifies the code for the Global Lock and the Firmware Waking 7648Vector(s). 7649 7650Example Code and Data Size: These are the sizes for the OS-independent 7651acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7652debug version of the code includes the debug output trace mechanism and 7653has a 7654much larger code and data size. 7655 7656 Previous Release: 7657 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 7658 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 7659 Current Release: 7660 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 7661 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 7662 76632) iASL Compiler/Disassembler and Tools: 7664 7665iASL: Improved disassembly of external method calls. Added the -e option 7666to 7667allow the inclusion of additional ACPI tables to help with the 7668disassembly 7669of 7670method invocations and the generation of external declarations during the 7671disassembly. Certain external method invocations cannot be disassembled 7672properly without the actual declaration of the method. Use the -e option 7673to 7674include the table where the external method(s) are actually declared. 7675Most 7676useful for disassembling SSDTs that make method calls back to the master 7677DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl 7678-d 7679-e dsdt.aml ssdt1.aml 7680 7681iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 7682problem where the use of an alias within a namepath would result in a not 7683found error or cause the compiler to fault. Also now allows forward 7684references from the Alias operator itself. ACPICA BZ 738. 7685 7686---------------------------------------- 768726 September 2008. Summary of changes for version 20080926: 7688 76891) ACPI CA Core Subsystem: 7690 7691Designed and implemented a mechanism to validate predefined ACPI methods 7692and 7693objects. This code validates the predefined ACPI objects (objects whose 7694names 7695start with underscore) that appear in the namespace, at the time they are 7696evaluated. The argument count and the type of the returned object are 7697validated against the ACPI specification. The purpose of this validation 7698is 7699to detect problems with the BIOS-implemented predefined ACPI objects 7700before 7701the results are returned to the ACPI-related drivers. Future enhancements 7702may 7703include actual repair of incorrect return objects where possible. Two new 7704files are nspredef.c and acpredef.h. 7705 7706Fixed a fault in the AML parser if a memory allocation fails during the 7707Op 7708completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 7709 7710Fixed an issue with implicit return compatibility. This change improves 7711the 7712implicit return mechanism to be more compatible with the MS interpreter. 7713Lin 7714Ming, ACPICA BZ 349. 7715 7716Implemented support for zero-length buffer-to-string conversions. Allow 7717zero 7718length strings during interpreter buffer-to-string conversions. For 7719example, 7720during the ToDecimalString and ToHexString operators, as well as implicit 7721conversions. Fiodor Suietov, ACPICA BZ 585. 7722 7723Fixed two possible memory leaks in the error exit paths of 7724AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions 7725are 7726similar in that they use a stack of state objects in order to eliminate 7727recursion. The stack must be fully unwound and deallocated if an error 7728occurs. Lin Ming. ACPICA BZ 383. 7729 7730Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the 7731global 7732ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 7733Moore ACPICA BZ 442. 7734 7735Removed the obsolete version number in module headers. Removed the 7736"$Revision" number that appeared in each module header. This version 7737number 7738was useful under SourceSafe and CVS, but has no meaning under git. It is 7739not 7740only incorrect, it could also be misleading. 7741 7742Example Code and Data Size: These are the sizes for the OS-independent 7743acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7744debug version of the code includes the debug output trace mechanism and 7745has a 7746much larger code and data size. 7747 7748 Previous Release: 7749 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 7750 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 7751 Current Release: 7752 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 7753 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 7754 7755---------------------------------------- 775629 August 2008. Summary of changes for version 20080829: 7757 77581) ACPI CA Core Subsystem: 7759 7760Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 7761Reference. Changes include the elimination of cheating on the Object 7762field 7763for the DdbHandle subtype, addition of a reference class field to 7764differentiate the various reference types (instead of an AML opcode), and 7765the 7766cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 7767 7768Reduce an error to a warning for an incorrect method argument count. 7769Previously aborted with an error if too few arguments were passed to a 7770control method via the external ACPICA interface. Now issue a warning 7771instead 7772and continue. Handles the case where the method inadvertently declares 7773too 7774many arguments, but does not actually use the extra ones. Applies mainly 7775to 7776the predefined methods. Lin Ming. Linux BZ 11032. 7777 7778Disallow the evaluation of named object types with no intrinsic value. 7779Return 7780AE_TYPE for objects that have no value and therefore evaluation is 7781undefined: 7782Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation 7783of 7784these types were allowed, but an exception would be generated at some 7785point 7786during the evaluation. Now, the error is generated up front. 7787 7788Fixed a possible memory leak in the AcpiNsGetExternalPathname function 7789(nsnames.c). Fixes a leak in the error exit path. 7790 7791Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These 7792debug 7793levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and 7794ACPI_EXCEPTION 7795interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 7796ACPI_LV_EVENTS. 7797 7798Removed obsolete and/or unused exception codes from the acexcep.h header. 7799There is the possibility that certain device drivers may be affected if 7800they 7801use any of these exceptions. 7802 7803The ACPICA documentation has been added to the public git source tree, 7804under 7805acpica/documents. Included are the ACPICA programmer reference, the iASL 7806compiler reference, and the changes.txt release logfile. 7807 7808Example Code and Data Size: These are the sizes for the OS-independent 7809acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7810debug version of the code includes the debug output trace mechanism and 7811has a 7812much larger code and data size. 7813 7814 Previous Release: 7815 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 7816 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 7817 Current Release: 7818 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 7819 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 7820 78212) iASL Compiler/Disassembler and Tools: 7822 7823Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 7824defines _SCP with 3 arguments. Previous versions defined it with only 1 7825argument. iASL now allows both definitions. 7826 7827iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for 7828zero- 7829length subtables when disassembling ACPI tables. Also fixed a couple of 7830errors where a full 16-bit table type field was not extracted from the 7831input 7832properly. 7833 7834acpisrc: Improve comment counting mechanism for generating source code 7835statistics. Count first and last lines of multi-line comments as 7836whitespace, 7837not comment lines. Handle Linux legal header in addition to standard 7838acpica 7839header. 7840 7841---------------------------------------- 7842 784329 July 2008. Summary of changes for version 20080729: 7844 78451) ACPI CA Core Subsystem: 7846 7847Fix a possible deadlock in the GPE dispatch. Remove call to 7848AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will 7849attempt 7850to acquire the GPE lock but can deadlock since the GPE lock is already 7851held 7852at dispatch time. This code was introduced in version 20060831 as a 7853response 7854to Linux BZ 6881 and has since been removed from Linux. 7855 7856Add a function to dereference returned reference objects. Examines the 7857return 7858object from a call to AcpiEvaluateObject. Any Index or RefOf references 7859are 7860automatically dereferenced in an attempt to return something useful 7861(these 7862reference types cannot be converted into an external ACPI_OBJECT.) 7863Provides 7864MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 7865 7866x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 7867subtables for the MADT and one new subtable for the SRAT. Includes 7868disassembler and AcpiSrc support. Data from the Intel 64 Architecture 7869x2APIC 7870Specification, June 2008. 7871 7872Additional error checking for pathname utilities. Add error check after 7873all 7874calls to AcpiNsGetPathnameLength. Add status return from 7875AcpiNsBuildExternalPath and check after all calls. Add parameter 7876validation 7877to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 7878 7879Return status from the global init function AcpiUtGlobalInitialize. This 7880is 7881used by both the kernel subsystem and the utilities such as iASL 7882compiler. 7883The function could possibly fail when the caches are initialized. Yang 7884Yi. 7885 7886Add a function to decode reference object types to strings. Created for 7887improved error messages. 7888 7889Improve object conversion error messages. Better error messages during 7890object 7891conversion from internal to the external ACPI_OBJECT. Used for external 7892calls 7893to AcpiEvaluateObject. 7894 7895Example Code and Data Size: These are the sizes for the OS-independent 7896acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7897debug version of the code includes the debug output trace mechanism and 7898has a 7899much larger code and data size. 7900 7901 Previous Release: 7902 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 7903 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 7904 Current Release: 7905 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 7906 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 7907 79082) iASL Compiler/Disassembler and Tools: 7909 7910Debugger: fix a possible hang when evaluating non-methods. Fixes a 7911problem 7912introduced in version 20080701. If the object being evaluated (via 7913execute 7914command) is not a method, the debugger can hang while trying to obtain 7915non- 7916existent parameters. 7917 7918iASL: relax error for using reserved "_T_x" identifiers. These names can 7919appear in a disassembled ASL file if they were emitted by the original 7920compiler. Instead of issuing an error or warning and forcing the user to 7921manually change these names, issue a remark instead. 7922 7923iASL: error if named object created in while loop. Emit an error if any 7924named 7925object is created within a While loop. If allowed, this code will 7926generate 7927a 7928run-time error on the second iteration of the loop when an attempt is 7929made 7930to 7931create the same named object twice. ACPICA bugzilla 730. 7932 7933iASL: Support absolute pathnames for include files. Add support for 7934absolute 7935pathnames within the Include operator. previously, only relative 7936pathnames 7937were supported. 7938 7939iASL: Enforce minimum 1 interrupt in interrupt macro and Resource 7940Descriptor. 7941The ACPI spec requires one interrupt minimum. BZ 423 7942 7943iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 7944Handles the case for the Interrupt Resource Descriptor where 7945the ResourceSource argument is omitted but ResourceSourceIndex 7946is present. Now leave room for the Index. BZ 426 7947 7948iASL: Prevent error message if CondRefOf target does not exist. Fixes 7949cases 7950where an error message is emitted if the target does not exist. BZ 516 7951 7952iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 7953(get ACPI tables on Windows). This was apparently broken in version 795420070919. 7955 7956AcpiXtract: Handle EOF while extracting data. Correctly handle the case 7957where 7958the EOF happens immediately after the last table in the input file. Print 7959completion message. Previously, no message was displayed in this case. 7960 7961---------------------------------------- 796201 July 2008. Summary of changes for version 20080701: 7963 79640) Git source tree / acpica.org 7965 7966Fixed a problem where a git-clone from http would not transfer the entire 7967source tree. 7968 79691) ACPI CA Core Subsystem: 7970 7971Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 7972enable bit. Now performs a read-change-write of the enable register 7973instead 7974of simply writing out the cached enable mask. This will prevent 7975inadvertent 7976enabling of GPEs if a rogue GPE is received during initialization (before 7977GPE 7978handlers are installed.) 7979 7980Implemented a copy for dynamically loaded tables. Previously, dynamically 7981loaded tables were simply mapped - but on some machines this memory is 7982corrupted after suspend. Now copy the table to a local buffer. For the 7983OpRegion case, added checksum verify. Use the table length from the table 7984header, not the region length. For the Buffer case, use the table length 7985also. Dennis Noordsij, Bob Moore. BZ 10734 7986 7987Fixed a problem where the same ACPI table could not be dynamically loaded 7988and 7989unloaded more than once. Without this change, a table cannot be loaded 7990again 7991once it has been loaded/unloaded one time. The current mechanism does not 7992unregister a table upon an unload. During a load, if the same table is 7993found, 7994this no longer returns an exception. BZ 722 7995 7996Fixed a problem where the wrong descriptor length was calculated for the 7997EndTag descriptor in 64-bit mode. The "minimal" descriptors such as 7998EndTag 7999are calculated as 12 bytes long, but the actual length in the internal 8000descriptor is 16 because of the round-up to 8 on the 64-bit build. 8001Reported 8002by Linn Crosetto. BZ 728 8003 8004Fixed a possible memory leak in the Unload operator. The DdbHandle 8005returned 8006by Load() did not have its reference count decremented during unload, 8007leading 8008to a memory leak. Lin Ming. BZ 727 8009 8010Fixed a possible memory leak when deleting thermal/processor objects. Any 8011associated notify handlers (and objects) were not being deleted. Fiodor 8012Suietov. BZ 506 8013 8014Fixed the ordering of the ASCII names in the global mutex table to match 8015the 8016actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug 8017only. 8018Vegard Nossum. BZ 726 8019 8020Enhanced the AcpiGetObjectInfo interface to return the number of required 8021arguments if the object is a control method. Added this call to the 8022debugger 8023so the proper number of default arguments are passed to a method. This 8024prevents a warning when executing methods from AcpiExec. 8025 8026Added a check for an invalid handle in AcpiGetObjectInfo. Return 8027AE_BAD_PARAMETER if input handle is invalid. BZ 474 8028 8029Fixed an extraneous warning from exconfig.c on the 64-bit build. 8030 8031Example Code and Data Size: These are the sizes for the OS-independent 8032acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8033debug version of the code includes the debug output trace mechanism and 8034has a 8035much larger code and data size. 8036 8037 Previous Release: 8038 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 8039 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 8040 Current Release: 8041 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 8042 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 8043 80442) iASL Compiler/Disassembler and Tools: 8045 8046iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 8047resource descriptor names. 8048 8049iASL: Detect invalid ASCII characters in input (windows version). Removed 8050the 8051"-CF" flag from the flex compile, enables correct detection of non-ASCII 8052characters in the input. BZ 441 8053 8054iASL: Eliminate warning when result of LoadTable is not used. Eliminate 8055the 8056"result of operation not used" warning when the DDB handle returned from 8057LoadTable is not used. The warning is not needed. BZ 590 8058 8059AcpiExec: Add support for dynamic table load/unload. Now calls _CFG 8060method 8061to 8062pass address of table to the AML. Added option to disable OpRegion 8063simulation 8064to allow creation of an OpRegion with a real address that was passed to 8065_CFG. 8066All of this allows testing of the Load and Unload operators from 8067AcpiExec. 8068 8069Debugger: update tables command for unloaded tables. Handle unloaded 8070tables 8071and use the standard table header output routine. 8072 8073---------------------------------------- 807409 June 2008. Summary of changes for version 20080609: 8075 80761) ACPI CA Core Subsystem: 8077 8078Implemented a workaround for reversed _PRT entries. A significant number 8079of 8080BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 8081change dynamically detects and repairs this problem. Provides 8082compatibility 8083with MS ACPI. BZ 6859 8084 8085Simplified the internal ACPI hardware interfaces to eliminate the locking 8086flag parameter from Register Read/Write. Added a new external interface, 8087AcpiGetRegisterUnlocked. 8088 8089Fixed a problem where the invocation of a GPE control method could hang. 8090This 8091was a regression introduced in 20080514. The new method argument count 8092validation mechanism can enter an infinite loop when a GPE method is 8093dispatched. Problem fixed by removing the obsolete code that passed GPE 8094block 8095information to the notify handler via the control method parameter 8096pointer. 8097 8098Fixed a problem where the _SST execution status was incorrectly returned 8099to 8100the caller of AcpiEnterSleepStatePrep. This was a regression introduced 8101in 810220080514. _SST is optional and a NOT_FOUND exception should never be 8103returned. BZ 716 8104 8105Fixed a problem where a deleted object could be accessed from within the 8106AML 8107parser. This was a regression introduced in version 20080123 as a fix for 8108the 8109Unload operator. Lin Ming. BZ 10669 8110 8111Cleaned up the debug operand dump mechanism. Eliminated unnecessary 8112operands 8113and eliminated the use of a negative index in a loop. Operands are now 8114displayed in the correct order, not backwards. This also fixes a 8115regression 8116introduced in 20080514 on 64-bit systems where the elimination of 8117ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 8118715 8119 8120Fixed a possible memory leak in EvPciConfigRegionSetup where the error 8121exit 8122path did not delete a locally allocated structure. 8123 8124Updated definitions for the DMAR and SRAT tables to synchronize with the 8125current specifications. Includes disassembler support. 8126 8127Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 8128loop termination value was used. Loop terminated on iteration early, 8129missing 8130one mutex. Linn Crosetto 8131 8132Example Code and Data Size: These are the sizes for the OS-independent 8133acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8134debug version of the code includes the debug output trace mechanism and 8135has a 8136much larger code and data size. 8137 8138 Previous Release: 8139 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 8140 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 8141 Current Release: 8142 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 8143 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 8144 81452) iASL Compiler/Disassembler and Tools: 8146 8147Disassembler: Implemented support for EisaId() within _CID objects. Now 8148disassemble integer _CID objects back to EisaId invocations, including 8149multiple integers within _CID packages. Includes single-step support for 8150debugger also. 8151 8152Disassembler: Added support for DMAR and SRAT table definition changes. 8153 8154---------------------------------------- 815514 May 2008. Summary of changes for version 20080514: 8156 81571) ACPI CA Core Subsystem: 8158 8159Fixed a problem where GPEs were enabled too early during the ACPICA 8160initialization. This could lead to "handler not installed" errors on some 8161machines. Moved GPE enable until after _REG/_STA/_INI methods are run. 8162This 8163ensures that all operation regions and devices throughout the namespace 8164have 8165been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 8166 8167Implemented a change to the enter sleep code. Moved execution of the _GTS 8168method to just before setting sleep enable bit. The execution was moved 8169from 8170AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 8171immediately before the SLP_EN bit is set, as per the ACPI specification. 8172Luming Yu, BZ 1653. 8173 8174Implemented a fix to disable unknown GPEs (2nd version). Now always 8175disable 8176the GPE, even if ACPICA thinks that that it is already disabled. It is 8177possible that the AML or some other code has enabled the GPE unbeknownst 8178to 8179the ACPICA code. 8180 8181Fixed a problem with the Field operator where zero-length fields would 8182return 8183an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length 8184ASL 8185field declarations in Field(), BankField(), and IndexField(). BZ 10606. 8186 8187Implemented a fix for the Load operator, now load the table at the 8188namespace 8189root. This reverts a change introduced in version 20071019. The table is 8190now 8191loaded at the namespace root even though this goes against the ACPI 8192specification. This provides compatibility with other ACPI 8193implementations. 8194The ACPI specification will be updated to reflect this in ACPI 4.0. Lin 8195Ming. 8196 8197Fixed a problem where ACPICA would not Load() tables with unusual 8198signatures. 8199Now ignore ACPI table signature for Load() operator. Only "SSDT" is 8200acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 8201Therefore, signature validation is worthless. Apparently MS ACPI accepts 8202such 8203signatures, ACPICA must be compatible. BZ 10454. 8204 8205Fixed a possible negative array index in AcpiUtValidateException. Added 8206NULL 8207fields to the exception string arrays to eliminate a -1 subtraction on 8208the 8209SubStatus field. 8210 8211Updated the debug tracking macros to reduce overall code and data size. 8212Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 8213instead of pointers to static strings. Jan Beulich and Bob Moore. 8214 8215Implemented argument count checking in control method invocation via 8216AcpiEvaluateObject. Now emit an error if too few arguments, warning if 8217too 8218many. This applies only to extern programmatic control method execution, 8219not 8220method-to-method calls within the AML. Lin Ming. 8221 8222Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is 8223no 8224longer needed, especially with the removal of 16-bit support. It was 8225replaced 8226mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 8227bit 8228on 822932/64-bit platforms is required. 8230 8231Added the C const qualifier for appropriate string constants -- mostly 8232MODULE_NAME and printf format strings. Jan Beulich. 8233 8234Example Code and Data Size: These are the sizes for the OS-independent 8235acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8236debug version of the code includes the debug output trace mechanism and 8237has a 8238much larger code and data size. 8239 8240 Previous Release: 8241 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 8242 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 8243 Current Release: 8244 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 8245 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 8246 82472) iASL Compiler/Disassembler and Tools: 8248 8249Implemented ACPI table revision ID validation in the disassembler. Zero 8250is 8251always invalid. For DSDTs, the ID controls the interpreter integer width. 82521 8253means 32-bit and this is unusual. 2 or greater is 64-bit. 8254 8255---------------------------------------- 825621 March 2008. Summary of changes for version 20080321: 8257 82581) ACPI CA Core Subsystem: 8259 8260Implemented an additional change to the GPE support in order to suppress 8261spurious or stray GPEs. The AcpiEvDisableGpe function will now 8262permanently 8263disable incoming GPEs that are neither enabled nor disabled -- meaning 8264that 8265the GPE is unknown to the system. This should prevent future interrupt 8266floods 8267from that GPE. BZ 6217 (Zhang Rui) 8268 8269Fixed a problem where NULL package elements were not returned to the 8270AcpiEvaluateObject interface correctly. The element was simply ignored 8271instead of returning a NULL ACPI_OBJECT package element, potentially 8272causing 8273a buffer overflow and/or confusing the caller who expected a fixed number 8274of 8275elements. BZ 10132 (Lin Ming, Bob Moore) 8276 8277Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, 8278Dword, 8279Qword), Field, BankField, and IndexField operators when invoked from 8280inside 8281an executing control method. In this case, these operators created 8282namespace 8283nodes that were incorrectly left marked as permanent nodes instead of 8284temporary nodes. This could cause a problem if there is race condition 8285between an exiting control method and a running namespace walk. (Reported 8286by 8287Linn Crosetto) 8288 8289Fixed a problem where the CreateField and CreateXXXField operators would 8290incorrectly allow duplicate names (the name of the field) with no 8291exception 8292generated. 8293 8294Implemented several changes for Notify handling. Added support for new 8295Notify 8296values (ACPI 2.0+) and improved the Notify debug output. Notify on 8297PowerResource objects is no longer allowed, as per the ACPI 8298specification. 8299(Bob Moore, Zhang Rui) 8300 8301All Reference Objects returned via the AcpiEvaluateObject interface are 8302now 8303marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved 8304for 8305NULL objects - either NULL package elements or unresolved named 8306references. 8307 8308Fixed a problem where an extraneous debug message was produced for 8309package 8310objects (when debugging enabled). The message "Package List length larger 8311than NumElements count" is now produced in the correct case, and is now 8312an 8313error message rather than a debug message. Added a debug message for the 8314opposite case, where NumElements is larger than the Package List (the 8315package 8316will be padded out with NULL elements as per the ACPI spec.) 8317 8318Implemented several improvements for the output of the ASL "Debug" object 8319to 8320clarify and keep all data for a given object on one output line. 8321 8322Fixed two size calculation issues with the variable-length Start 8323Dependent 8324resource descriptor. 8325 8326Example Code and Data Size: These are the sizes for the OS-independent 8327acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8328debug version of the code includes the debug output trace mechanism and 8329has 8330a much larger code and data size. 8331 8332 Previous Release: 8333 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 8334 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 8335 Current Release: 8336 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 8337 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 8338 83392) iASL Compiler/Disassembler and Tools: 8340 8341Fixed a problem with the use of the Switch operator where execution of 8342the 8343containing method by multiple concurrent threads could cause an 8344AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 8345actual Switch opcode, it must be simulated with local named temporary 8346variables and if/else pairs. The solution chosen was to mark any method 8347that 8348uses Switch as Serialized, thus preventing multiple thread entries. BZ 8349469. 8350 8351---------------------------------------- 835213 February 2008. Summary of changes for version 20080213: 8353 83541) ACPI CA Core Subsystem: 8355 8356Implemented another MS compatibility design change for GPE/Notify 8357handling. 8358GPEs are now cleared/enabled asynchronously to allow all pending notifies 8359to 8360complete first. It is expected that the OSL will queue the enable request 8361behind all pending notify requests (may require changes to the local host 8362OSL 8363in AcpiOsExecute). Alexey Starikovskiy. 8364 8365Fixed a problem where buffer and package objects passed as arguments to a 8366control method via the external AcpiEvaluateObject interface could cause 8367an 8368AE_AML_INTERNAL exception depending on the order and type of operators 8369executed by the target control method. 8370 8371Fixed a problem where resource descriptor size optimization could cause a 8372problem when a _CRS resource template is passed to a _SRS method. The 8373_SRS 8374resource template must use the same descriptors (with the same size) as 8375returned from _CRS. This change affects the following resource 8376descriptors: 8377IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 83789487) 8379 8380Fixed a problem where a CopyObject to RegionField, BankField, and 8381IndexField 8382objects did not perform an implicit conversion as it should. These types 8383must 8384retain their initial type permanently as per the ACPI specification. 8385However, 8386a CopyObject to all other object types should not perform an implicit 8387conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 8388 8389Fixed a problem with the AcpiGetDevices interface where the mechanism to 8390match device CIDs did not examine the entire list of available CIDs, but 8391instead aborted on the first non-matching CID. Andrew Patterson. 8392 8393Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro 8394was 8395inadvertently changed to return a 16-bit value instead of a 32-bit value, 8396truncating the upper dword of a 64-bit value. This macro is only used to 8397display debug output, so no incorrect calculations were made. Also, 8398reimplemented the macro so that a 64-bit shift is not performed by 8399inefficient compilers. 8400 8401Added missing va_end statements that should correspond with each va_start 8402statement. 8403 8404Example Code and Data Size: These are the sizes for the OS-independent 8405acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8406debug version of the code includes the debug output trace mechanism and 8407has 8408a much larger code and data size. 8409 8410 Previous Release: 8411 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 8412 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 8413 Current Release: 8414 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 8415 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 8416 84172) iASL Compiler/Disassembler and Tools: 8418 8419Implemented full disassembler support for the following new ACPI tables: 8420BERT, EINJ, and ERST. Implemented partial disassembler support for the 8421complicated HEST table. These tables support the Windows Hardware Error 8422Architecture (WHEA). 8423 8424---------------------------------------- 842523 January 2008. Summary of changes for version 20080123: 8426 84271) ACPI CA Core Subsystem: 8428 8429Added the 2008 copyright to all module headers and signons. This affects 8430virtually every file in the ACPICA core subsystem, the iASL compiler, and 8431the tools/utilities. 8432 8433Fixed a problem with the SizeOf operator when used with Package and 8434Buffer 8435objects. These objects have deferred execution for some arguments, and 8436the 8437execution is now completed before the SizeOf is executed. This problem 8438caused 8439unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) 8440BZ 84419558 8442 8443Implemented an enhancement to the interpreter "slack mode". In the 8444absence 8445of 8446an explicit return or an implicitly returned object from the last 8447executed 8448opcode, a control method will now implicitly return an integer of value 0 8449for 8450Microsoft compatibility. (Lin Ming) BZ 392 8451 8452Fixed a problem with the Load operator where an exception was not 8453returned 8454in 8455the case where the table is already loaded. (Lin Ming) BZ 463 8456 8457Implemented support for the use of DDBHandles as an Indexed Reference, as 8458per 8459the ACPI spec. (Lin Ming) BZ 486 8460 8461Implemented support for UserTerm (Method invocation) for the Unload 8462operator 8463as per the ACPI spec. (Lin Ming) BZ 580 8464 8465Fixed a problem with the LoadTable operator where the OemId and 8466OemTableId 8467input strings could cause unexpected failures if they were shorter than 8468the 8469maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 8470 8471Implemented support for UserTerm (Method invocation) for the Unload 8472operator 8473as per the ACPI spec. (Lin Ming) BZ 580 8474 8475Implemented header file support for new ACPI tables - BERT, ERST, EINJ, 8476HEST, 8477IBFT, UEFI, WDAT. Disassembler support is forthcoming. 8478 8479Example Code and Data Size: These are the sizes for the OS-independent 8480acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8481debug version of the code includes the debug output trace mechanism and 8482has 8483a much larger code and data size. 8484 8485 Previous Release: 8486 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 8487 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 8488 Current Release: 8489 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 8490 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 8491 84922) iASL Compiler/Disassembler and Tools: 8493 8494Implemented support in the disassembler for checksum validation on 8495incoming 8496binary DSDTs and SSDTs. If incorrect, a message is displayed within the 8497table 8498header dump at the start of the disassembly. 8499 8500Implemented additional debugging information in the namespace listing 8501file 8502created during compilation. In addition to the namespace hierarchy, the 8503full 8504pathname to each namespace object is displayed. 8505 8506Fixed a problem with the disassembler where invalid ACPI tables could 8507cause 8508faults or infinite loops. 8509 8510Fixed an unexpected parse error when using the optional "parameter types" 8511list in a control method declaration. (Lin Ming) BZ 397 8512 8513Fixed a problem where two External declarations with the same name did 8514not 8515cause an error (Lin Ming) BZ 509 8516 8517Implemented support for full TermArgs (adding Argx, Localx and method 8518invocation) for the ParameterData parameter to the LoadTable operator. 8519(Lin 8520Ming) BZ 583,587 8521 8522---------------------------------------- 852319 December 2007. Summary of changes for version 20071219: 8524 85251) ACPI CA Core Subsystem: 8526 8527Implemented full support for deferred execution for the TermArg string 8528arguments for DataTableRegion. This enables forward references and full 8529operand resolution for the three string arguments. Similar to 8530OperationRegion 8531deferred argument execution.) Lin Ming. BZ 430 8532 8533Implemented full argument resolution support for the BankValue argument 8534to 8535BankField. Previously, only constants were supported, now any TermArg may 8536be 8537used. Lin Ming BZ 387, 393 8538 8539Fixed a problem with AcpiGetDevices where the search of a branch of the 8540device tree could be terminated prematurely. In accordance with the ACPI 8541specification, the search down the current branch is terminated if a 8542device 8543is both not present and not functional (instead of just not present.) 8544Yakui 8545Zhao. 8546 8547Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly 8548if 8549the underlying AML code changed the GPE enable registers. Now, any 8550unknown 8551incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately 8552disabled 8553instead of simply ignored. Rui Zhang. 8554 8555Fixed a problem with Index Fields where the Index register was 8556incorrectly 8557limited to a maximum of 32 bits. Now any size may be used. 8558 8559Fixed a couple memory leaks associated with "implicit return" objects 8560when 8561the AML Interpreter slack mode is enabled. Lin Ming BZ 349 8562 8563Example Code and Data Size: These are the sizes for the OS-independent 8564acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8565debug version of the code includes the debug output trace mechanism and 8566has 8567a much larger code and data size. 8568 8569 Previous Release: 8570 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 8571 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 8572 Current Release: 8573 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 8574 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 8575 8576---------------------------------------- 857714 November 2007. Summary of changes for version 20071114: 8578 85791) ACPI CA Core Subsystem: 8580 8581Implemented event counters for each of the Fixed Events, the ACPI SCI 8582(interrupt) itself, and control methods executed. Named 8583AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. 8584These 8585should be useful for debugging and statistics. 8586 8587Implemented a new external interface, AcpiGetStatistics, to retrieve the 8588contents of the various event counters. Returns the current values for 8589AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 8590AcpiMethodCount. The interface can be expanded in the future if new 8591counters 8592are added. Device drivers should use this interface rather than access 8593the 8594counters directly. 8595 8596Fixed a problem with the FromBCD and ToBCD operators. With some 8597compilers, 8598the ShortDivide function worked incorrectly, causing problems with the 8599BCD 8600functions with large input values. A truncation from 64-bit to 32-bit 8601inadvertently occurred. Internal BZ 435. Lin Ming 8602 8603Fixed a problem with Index references passed as method arguments. 8604References 8605passed as arguments to control methods were dereferenced immediately 8606(before 8607control was passed to the called method). The references are now 8608correctly 8609passed directly to the called method. BZ 5389. Lin Ming 8610 8611Fixed a problem with CopyObject used in conjunction with the Index 8612operator. 8613The reference was incorrectly dereferenced before the copy. The reference 8614is 8615now correctly copied. BZ 5391. Lin Ming 8616 8617Fixed a problem with Control Method references within Package objects. 8618These 8619references are now correctly generated. This completes the package 8620construction overhaul that began in version 20071019. 8621 8622Example Code and Data Size: These are the sizes for the OS-independent 8623acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8624debug version of the code includes the debug output trace mechanism and 8625has 8626a much larger code and data size. 8627 8628 Previous Release: 8629 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 8630 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 8631 Current Release: 8632 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 8633 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 8634 8635 86362) iASL Compiler/Disassembler and Tools: 8637 8638The AcpiExec utility now installs handlers for all of the predefined 8639Operation Region types. New types supported are: PCI_Config, CMOS, and 8640PCIBARTarget. 8641 8642Fixed a problem with the 64-bit version of AcpiExec where the extended 8643(64- 8644bit) address fields for the DSDT and FACS within the FADT were not being 8645used, causing truncation of the upper 32-bits of these addresses. Lin 8646Ming 8647and Bob Moore 8648 8649---------------------------------------- 865019 October 2007. Summary of changes for version 20071019: 8651 86521) ACPI CA Core Subsystem: 8653 8654Fixed a problem with the Alias operator when the target of the alias is a 8655named ASL operator that opens a new scope -- Scope, Device, 8656PowerResource, 8657Processor, and ThermalZone. In these cases, any children of the original 8658operator could not be accessed via the alias, potentially causing 8659unexpected 8660AE_NOT_FOUND exceptions. (BZ 9067) 8661 8662Fixed a problem with the Package operator where all named references were 8663created as object references and left otherwise unresolved. According to 8664the 8665ACPI specification, a Package can only contain Data Objects or references 8666to 8667control methods. The implication is that named references to Data Objects 8668(Integer, Buffer, String, Package, BufferField, Field) should be resolved 8669immediately upon package creation. This is the approach taken with this 8670change. References to all other named objects (Methods, Devices, Scopes, 8671etc.) are all now properly created as reference objects. (BZ 5328) 8672 8673Reverted a change to Notify handling that was introduced in version 867420070508. This version changed the Notify handling from asynchronous to 8675fully synchronous (Device driver Notify handling with respect to the 8676Notify 8677ASL operator). It was found that this change caused more problems than it 8678solved and was removed by most users. 8679 8680Fixed a problem with the Increment and Decrement operators where the type 8681of 8682the target object could be unexpectedly and incorrectly changed. (BZ 353) 8683Lin Ming. 8684 8685Fixed a problem with the Load and LoadTable operators where the table 8686location within the namespace was ignored. Instead, the table was always 8687loaded into the root or current scope. Lin Ming. 8688 8689Fixed a problem with the Load operator when loading a table from a buffer 8690object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 8691 8692Fixed a problem with the Debug object where a store of a DdbHandle 8693reference 8694object to the Debug object could cause a fault. 8695 8696Added a table checksum verification for the Load operator, in the case 8697where 8698the load is from a buffer. (BZ 578). 8699 8700Implemented additional parameter validation for the LoadTable operator. 8701The 8702length of the input strings SignatureString, OemIdString, and OemTableId 8703are 8704now checked for maximum lengths. (BZ 582) Lin Ming. 8705 8706Example Code and Data Size: These are the sizes for the OS-independent 8707acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8708debug version of the code includes the debug output trace mechanism and 8709has 8710a much larger code and data size. 8711 8712 Previous Release: 8713 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 8714 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 8715 Current Release: 8716 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 8717 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 8718 8719 87202) iASL Compiler/Disassembler: 8721 8722Fixed a problem where if a single file was specified and the file did not 8723exist, no error message was emitted. (Introduced with wildcard support in 8724version 20070917.) 8725 8726---------------------------------------- 872719 September 2007. Summary of changes for version 20070919: 8728 87291) ACPI CA Core Subsystem: 8730 8731Designed and implemented new external interfaces to install and remove 8732handlers for ACPI table-related events. Current events that are defined 8733are 8734LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 8735they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 8736AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 8737 8738Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 8739(acpi_serialized option on Linux) could cause some systems to hang during 8740initialization. (Bob Moore) BZ 8171 8741 8742Fixed a problem where objects of certain types (Device, ThermalZone, 8743Processor, PowerResource) can be not found if they are declared and 8744referenced from within the same control method (Lin Ming) BZ 341 8745 8746Example Code and Data Size: These are the sizes for the OS-independent 8747acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8748debug version of the code includes the debug output trace mechanism and 8749has 8750a much larger code and data size. 8751 8752 Previous Release: 8753 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 8754 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 8755 Current Release: 8756 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 8757 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 8758 8759 87602) iASL Compiler/Disassembler: 8761 8762Implemented support to allow multiple files to be compiled/disassembled 8763in 8764a 8765single invocation. This includes command line wildcard support for both 8766the 8767Windows and Unix versions of the compiler. This feature simplifies the 8768disassembly and compilation of multiple ACPI tables in a single 8769directory. 8770 8771---------------------------------------- 877208 May 2007. Summary of changes for version 20070508: 8773 87741) ACPI CA Core Subsystem: 8775 8776Implemented a Microsoft compatibility design change for the handling of 8777the 8778Notify AML operator. Previously, notify handlers were dispatched and 8779executed completely asynchronously in a deferred thread. The new design 8780still executes the notify handlers in a different thread, but the 8781original 8782thread that executed the Notify() now waits at a synchronization point 8783for 8784the notify handler to complete. Some machines depend on a synchronous 8785Notify 8786operator in order to operate correctly. 8787 8788Implemented support to allow Package objects to be passed as method 8789arguments to the external AcpiEvaluateObject interface. Previously, this 8790would return the AE_NOT_IMPLEMENTED exception. This feature had not been 8791implemented since there were no reserved control methods that required it 8792until recently. 8793 8794Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs 8795that 8796contained invalid non-zero values in reserved fields could cause later 8797failures because these fields have meaning in later revisions of the 8798FADT. 8799For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The 8800fields 8801are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 8802 8803Fixed a problem where the Global Lock handle was not properly updated if 8804a 8805thread that acquired the Global Lock via executing AML code then 8806attempted 8807to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by 8808Joe 8809Liu. 8810 8811Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 8812could be corrupted if the interrupt being removed was at the head of the 8813list. Reported by Linn Crosetto. 8814 8815Example Code and Data Size: These are the sizes for the OS-independent 8816acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8817debug version of the code includes the debug output trace mechanism and 8818has 8819a much larger code and data size. 8820 8821 Previous Release: 8822 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8823 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 8824 Current Release: 8825 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 8826 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 8827 8828---------------------------------------- 882920 March 2007. Summary of changes for version 20070320: 8830 88311) ACPI CA Core Subsystem: 8832 8833Implemented a change to the order of interpretation and evaluation of AML 8834operand objects within the AML interpreter. The interpreter now evaluates 8835operands in the order that they appear in the AML stream (and the 8836corresponding ASL code), instead of in the reverse order (after the 8837entire 8838operand list has been parsed). The previous behavior caused several 8839subtle 8840incompatibilities with the Microsoft AML interpreter as well as being 8841somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 8842 8843Implemented a change to the ACPI Global Lock support. All interfaces to 8844the 8845global lock now allow the same thread to acquire the lock multiple times. 8846This affects the AcpiAcquireGlobalLock external interface to the global 8847lock 8848as well as the internal use of the global lock to support AML fields -- a 8849control method that is holding the global lock can now simultaneously 8850access 8851AML fields that require global lock protection. Previously, in both 8852cases, 8853this would have resulted in an AE_ALREADY_ACQUIRED exception. The change 8854to 8855AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 8856Controller. There is no change to the behavior of the AML Acquire 8857operator, 8858as this can already be used to acquire a mutex multiple times by the same 8859thread. BZ 8066. With assistance from Alexey Starikovskiy. 8860 8861Fixed a problem where invalid objects could be referenced in the AML 8862Interpreter after error conditions. During operand evaluation, ensure 8863that 8864the internal "Return Object" field is cleared on error and only valid 8865pointers are stored there. Caused occasional access to deleted objects 8866that 8867resulted in "large reference count" warning messages. Valery Podrezov. 8868 8869Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur 8870on 8871deeply nested control method invocations. BZ 7873, local BZ 487. Valery 8872Podrezov. 8873 8874Fixed an internal problem with the handling of result objects on the 8875interpreter result stack. BZ 7872. Valery Podrezov. 8876 8877Removed obsolete code that handled the case where AML_NAME_OP is the 8878target 8879of a reference (Reference.Opcode). This code was no longer necessary. BZ 88807874. Valery Podrezov. 8881 8882Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This 8883was 8884a 8885remnant from the previously discontinued 16-bit support. 8886 8887Example Code and Data Size: These are the sizes for the OS-independent 8888acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8889debug version of the code includes the debug output trace mechanism and 8890has 8891a much larger code and data size. 8892 8893 Previous Release: 8894 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8895 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 8896 Current Release: 8897 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8898 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 8899 8900---------------------------------------- 890126 January 2007. Summary of changes for version 20070126: 8902 89031) ACPI CA Core Subsystem: 8904 8905Added the 2007 copyright to all module headers and signons. This affects 8906virtually every file in the ACPICA core subsystem, the iASL compiler, and 8907the utilities. 8908 8909Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 8910during a table load. A bad pointer was passed in the case where the DSDT 8911is 8912overridden, causing a fault in this case. 8913 8914Example Code and Data Size: These are the sizes for the OS-independent 8915acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8916debug version of the code includes the debug output trace mechanism and 8917has 8918a much larger code and data size. 8919 8920 Previous Release: 8921 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8922 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 8923 Current Release: 8924 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8925 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 8926 8927---------------------------------------- 892815 December 2006. Summary of changes for version 20061215: 8929 89301) ACPI CA Core Subsystem: 8931 8932Support for 16-bit ACPICA has been completely removed since it is no 8933longer 8934necessary and it clutters the code. All 16-bit macros, types, and 8935conditional compiles have been removed, cleaning up and simplifying the 8936code 8937across the entire subsystem. DOS support is no longer needed since the 8938bootable Linux firmware kit is now available. 8939 8940The handler for the Global Lock is now removed during AcpiTerminate to 8941enable a clean subsystem restart, via the implementation of the 8942AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 8943HP) 8944 8945Implemented enhancements to the multithreading support within the 8946debugger 8947to enable improved multithreading debugging and evaluation of the 8948subsystem. 8949(Valery Podrezov) 8950 8951Debugger: Enhanced the Statistics/Memory command to emit the total 8952(maximum) 8953memory used during the execution, as well as the maximum memory consumed 8954by 8955each of the various object types. (Valery Podrezov) 8956 8957Example Code and Data Size: These are the sizes for the OS-independent 8958acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8959debug version of the code includes the debug output trace mechanism and 8960has 8961a much larger code and data size. 8962 8963 Previous Release: 8964 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 8965 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 8966 Current Release: 8967 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8968 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 8969 8970 89712) iASL Compiler/Disassembler and Tools: 8972 8973AcpiExec: Implemented a new option (-m) to display full memory use 8974statistics upon subsystem/program termination. (Valery Podrezov) 8975 8976---------------------------------------- 897709 November 2006. Summary of changes for version 20061109: 8978 89791) ACPI CA Core Subsystem: 8980 8981Optimized the Load ASL operator in the case where the source operand is 8982an 8983operation region. Simply map the operation region memory, instead of 8984performing a bytewise read. (Region must be of type SystemMemory, see 8985below.) 8986 8987Fixed the Load ASL operator for the case where the source operand is a 8988region field. A buffer object is also allowed as the source operand. BZ 8989480 8990 8991Fixed a problem where the Load ASL operator allowed the source operand to 8992be 8993an operation region of any type. It is now restricted to regions of type 8994SystemMemory, as per the ACPI specification. BZ 481 8995 8996Additional cleanup and optimizations for the new Table Manager code. 8997 8998AcpiEnable will now fail if all of the required ACPI tables are not 8999loaded 9000(FADT, FACS, DSDT). BZ 477 9001 9002Added #pragma pack(8/4) to acobject.h to ensure that the structures in 9003this 9004header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 9005manually optimized to be aligned and will not work if it is byte-packed. 9006 9007Example Code and Data Size: These are the sizes for the OS-independent 9008acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9009debug version of the code includes the debug output trace mechanism and 9010has 9011a much larger code and data size. 9012 9013 Previous Release: 9014 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 9015 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 9016 Current Release: 9017 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 9018 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 9019 9020 90212) iASL Compiler/Disassembler and Tools: 9022 9023Fixed a problem where the presence of the _OSI predefined control method 9024within complex expressions could cause an internal compiler error. 9025 9026AcpiExec: Implemented full region support for multiple address spaces. 9027SpaceId is now part of the REGION object. BZ 429 9028 9029---------------------------------------- 903011 October 2006. Summary of changes for version 20061011: 9031 90321) ACPI CA Core Subsystem: 9033 9034Completed an AML interpreter performance enhancement for control method 9035execution. Previously a 2-pass parse/execution, control methods are now 9036completely parsed and executed in a single pass. This improves overall 9037interpreter performance by ~25%, reduces code size, and reduces CPU stack 9038use. (Valery Podrezov + interpreter changes in version 20051202 that 9039eliminated namespace loading during the pass one parse.) 9040 9041Implemented _CID support for PCI Root Bridge detection. If the _HID does 9042not 9043match the predefined PCI Root Bridge IDs, the _CID list (if present) is 9044now 9045obtained and also checked for an ID match. 9046 9047Implemented additional support for the PCI _ADR execution: upsearch until 9048a 9049device scope is found before executing _ADR. This allows PCI_Config 9050operation regions to be declared locally within control methods 9051underneath 9052PCI device objects. 9053 9054Fixed a problem with a possible race condition between threads executing 9055AcpiWalkNamespace and the AML interpreter. This condition was removed by 9056modifying AcpiWalkNamespace to (by default) ignore all temporary 9057namespace 9058entries created during any concurrent control method execution. An 9059additional namespace race condition is known to exist between 9060AcpiWalkNamespace and the Load/Unload ASL operators and is still under 9061investigation. 9062 9063Restructured the AML ParseLoop function, breaking it into several 9064subfunctions in order to reduce CPU stack use and improve 9065maintainability. 9066(Mikhail Kouzmich) 9067 9068AcpiGetHandle: Fix for parameter validation to detect invalid 9069combinations 9070of prefix handle and pathname. BZ 478 9071 9072Example Code and Data Size: These are the sizes for the OS-independent 9073acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9074debug version of the code includes the debug output trace mechanism and 9075has 9076a much larger code and data size. 9077 9078 Previous Release: 9079 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 9080 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 9081 Current Release: 9082 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 9083 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 9084 90852) iASL Compiler/Disassembler and Tools: 9086 9087Ported the -g option (get local ACPI tables) to the new ACPICA Table 9088Manager 9089to restore original behavior. 9090 9091---------------------------------------- 909227 September 2006. Summary of changes for version 20060927: 9093 90941) ACPI CA Core Subsystem: 9095 9096Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 9097These functions now use a spinlock for mutual exclusion and the interrupt 9098level indication flag is not needed. 9099 9100Fixed a problem with the Global Lock where the lock could appear to be 9101obtained before it is actually obtained. The global lock semaphore was 9102inadvertently created with one unit instead of zero units. (BZ 464) 9103Fiodor 9104Suietov. 9105 9106Fixed a possible memory leak and fault in AcpiExResolveObjectToValue 9107during 9108a read from a buffer or region field. (BZ 458) Fiodor Suietov. 9109 9110Example Code and Data Size: These are the sizes for the OS-independent 9111acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9112debug version of the code includes the debug output trace mechanism and 9113has 9114a much larger code and data size. 9115 9116 Previous Release: 9117 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 9118 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 9119 Current Release: 9120 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 9121 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 9122 9123 91242) iASL Compiler/Disassembler and Tools: 9125 9126Fixed a compilation problem with the pre-defined Resource Descriptor 9127field 9128names where an "object does not exist" error could be incorrectly 9129generated 9130if the parent ResourceTemplate pathname places the template within a 9131different namespace scope than the current scope. (BZ 7212) 9132 9133Fixed a problem where the compiler could hang after syntax errors 9134detected 9135in an ElseIf construct. (BZ 453) 9136 9137Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 9138operator. An incorrect output filename was produced when this parameter 9139was 9140a null string (""). Now, the original input filename is used as the AML 9141output filename, with an ".aml" extension. 9142 9143Implemented a generic batch command mode for the AcpiExec utility 9144(execute 9145any AML debugger command) (Valery Podrezov). 9146 9147---------------------------------------- 914812 September 2006. Summary of changes for version 20060912: 9149 91501) ACPI CA Core Subsystem: 9151 9152Enhanced the implementation of the "serialized mode" of the interpreter 9153(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 9154specified, instead of creating a serialization semaphore per control 9155method, 9156the interpreter lock is simply no longer released before a blocking 9157operation during control method execution. This effectively makes the AML 9158Interpreter single-threaded. The overhead of a semaphore per-method is 9159eliminated. 9160 9161Fixed a regression where an error was no longer emitted if a control 9162method 9163attempts to create 2 objects of the same name. This once again returns 9164AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism 9165that 9166will dynamically serialize the control method to possible prevent future 9167errors. (BZ 440) 9168 9169Integrated a fix for a problem with PCI Express HID detection in the PCI 9170Config Space setup procedure. (BZ 7145) 9171 9172Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 9173AcpiHwInitialize function - the FADT registers are now validated when the 9174table is loaded. 9175 9176Added two new warnings during FADT verification - 1) if the FADT is 9177larger 9178than the largest known FADT version, and 2) if there is a mismatch 9179between 9180a 918132-bit block address and the 64-bit X counterpart (when both are non- 9182zero.) 9183 9184Example Code and Data Size: These are the sizes for the OS-independent 9185acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9186debug version of the code includes the debug output trace mechanism and 9187has 9188a much larger code and data size. 9189 9190 Previous Release: 9191 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 9192 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 9193 Current Release: 9194 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 9195 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 9196 9197 91982) iASL Compiler/Disassembler and Tools: 9199 9200Fixed a problem with the implementation of the Switch() operator where 9201the 9202temporary variable was declared too close to the actual Switch, instead 9203of 9204at method level. This could cause a problem if the Switch() operator is 9205within a while loop, causing an error on the second iteration. (BZ 460) 9206 9207Disassembler - fix for error emitted for unknown type for target of scope 9208operator. Now, ignore it and continue. 9209 9210Disassembly of an FADT now verifies the input FADT and reports any errors 9211found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 9212 9213Disassembly of raw data buffers with byte initialization data now 9214prefixes 9215each output line with the current buffer offset. 9216 9217Disassembly of ASF! table now includes all variable-length data fields at 9218the end of some of the subtables. 9219 9220The disassembler now emits a comment if a buffer appears to be a 9221ResourceTemplate, but cannot be disassembled as such because the EndTag 9222does 9223not appear at the very end of the buffer. 9224 9225AcpiExec - Added the "-t" command line option to enable the serialized 9226mode 9227of the AML interpreter. 9228 9229---------------------------------------- 923031 August 2006. Summary of changes for version 20060831: 9231 92321) ACPI CA Core Subsystem: 9233 9234Miscellaneous fixes for the Table Manager: 9235- Correctly initialize internal common FADT for all 64-bit "X" fields 9236- Fixed a couple table mapping issues during table load 9237- Fixed a couple alignment issues for IA64 9238- Initialize input array to zero in AcpiInitializeTables 9239- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 9240AcpiGetTableByIndex 9241 9242Change for GPE support: when a "wake" GPE is received, all wake GPEs are 9243now 9244immediately disabled to prevent the waking GPE from firing again and to 9245prevent other wake GPEs from interrupting the wake process. 9246 9247Added the AcpiGpeCount global that tracks the number of processed GPEs, 9248to 9249be used for debugging systems with a large number of ACPI interrupts. 9250 9251Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 9252both the ACPICA headers and the disassembler. 9253 9254Example Code and Data Size: These are the sizes for the OS-independent 9255acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9256debug version of the code includes the debug output trace mechanism and 9257has 9258a much larger code and data size. 9259 9260 Previous Release: 9261 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 9262 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 9263 Current Release: 9264 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 9265 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 9266 9267 92682) iASL Compiler/Disassembler and Tools: 9269 9270Disassembler support for the DMAR ACPI table. 9271 9272---------------------------------------- 927323 August 2006. Summary of changes for version 20060823: 9274 92751) ACPI CA Core Subsystem: 9276 9277The Table Manager component has been completely redesigned and 9278reimplemented. The new design is much simpler, and reduces the overall 9279code 9280and data size of the kernel-resident ACPICA by approximately 5%. Also, it 9281is 9282now possible to obtain the ACPI tables very early during kernel 9283initialization, even before dynamic memory management is initialized. 9284(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 9285 9286Obsolete ACPICA interfaces: 9287 9288- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel 9289init 9290time). 9291- AcpiLoadTable: Not needed. 9292- AcpiUnloadTable: Not needed. 9293 9294New ACPICA interfaces: 9295 9296- AcpiInitializeTables: Must be called before the table manager can be 9297used. 9298- AcpiReallocateRootTable: Used to transfer the root table to dynamically 9299allocated memory after it becomes available. 9300- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI 9301tables 9302in the RSDT/XSDT. 9303 9304Other ACPICA changes: 9305 9306- AcpiGetTableHeader returns the actual mapped table header, not a copy. 9307Use 9308AcpiOsUnmapMemory to free this mapping. 9309- AcpiGetTable returns the actual mapped table. The mapping is managed 9310internally and must not be deleted by the caller. Use of this interface 9311causes no additional dynamic memory allocation. 9312- AcpiFindRootPointer: Support for physical addressing has been 9313eliminated, 9314it appeared to be unused. 9315- The interface to AcpiOsMapMemory has changed to be consistent with the 9316other allocation interfaces. 9317- The interface to AcpiOsGetRootPointer has changed to eliminate 9318unnecessary 9319parameters. 9320- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 932164- 9322bit platforms. Was previously 64 bits on all platforms. 9323- The interface to the ACPI Global Lock acquire/release macros have 9324changed 9325slightly since ACPICA no longer keeps a local copy of the FACS with a 9326constructed pointer to the actual global lock. 9327 9328Porting to the new table manager: 9329 9330- AcpiInitializeTables: Must be called once, and can be called anytime 9331during the OS initialization process. It allows the host to specify an 9332area 9333of memory to be used to store the internal version of the RSDT/XSDT (root 9334table). This allows the host to access ACPI tables before memory 9335management 9336is initialized and running. 9337- AcpiReallocateRootTable: Can be called after memory management is 9338running 9339to copy the root table to a dynamically allocated array, freeing up the 9340scratch memory specified in the call to AcpiInitializeTables. 9341- AcpiSubsystemInitialize: This existing interface is independent of the 9342Table Manager, and does not have to be called before the Table Manager 9343can 9344be used, it only must be called before the rest of ACPICA can be used. 9345- ACPI Tables: Some changes have been made to the names and structure of 9346the 9347actbl.h and actbl1.h header files and may require changes to existing 9348code. 9349For example, bitfields have been completely removed because of their lack 9350of 9351portability across C compilers. 9352- Update interfaces to the Global Lock acquire/release macros if local 9353versions are used. (see acwin.h) 9354 9355Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 9356 9357New files: tbfind.c 9358 9359Example Code and Data Size: These are the sizes for the OS-independent 9360acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9361debug version of the code includes the debug output trace mechanism and 9362has 9363a much larger code and data size. 9364 9365 Previous Release: 9366 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 9367 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 9368 Current Release: 9369 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 9370 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 9371 9372 93732) iASL Compiler/Disassembler and Tools: 9374 9375No changes for this release. 9376 9377---------------------------------------- 937821 July 2006. Summary of changes for version 20060721: 9379 93801) ACPI CA Core Subsystem: 9381 9382The full source code for the ASL test suite used to validate the iASL 9383compiler and the ACPICA core subsystem is being released with the ACPICA 9384source for the first time. The source is contained in a separate package 9385and 9386consists of over 1100 files that exercise all ASL/AML operators. The 9387package 9388should appear on the Intel/ACPI web site shortly. (Valery Podrezov, 9389Fiodor 9390Suietov) 9391 9392Completed a new design and implementation for support of the ACPI Global 9393Lock. On the OS side, the global lock is now treated as a standard AML 9394mutex. Previously, multiple OS threads could "acquire" the global lock 9395simultaneously. However, this could cause the BIOS to be starved out of 9396the 9397lock - especially in cases such as the Embedded Controller driver where 9398there is a tight coupling between the OS and the BIOS. 9399 9400Implemented an optimization for the ACPI Global Lock interrupt mechanism. 9401The Global Lock interrupt handler no longer queues the execution of a 9402separate thread to signal the global lock semaphore. Instead, the 9403semaphore 9404is signaled directly from the interrupt handler. 9405 9406Implemented support within the AML interpreter for package objects that 9407contain a larger AML length (package list length) than the package 9408element 9409count. In this case, the length of the package is truncated to match the 9410package element count. Some BIOS code apparently modifies the package 9411length 9412on the fly, and this change supports this behavior. Provides 9413compatibility 9414with the MS AML interpreter. (With assistance from Fiodor Suietov) 9415 9416Implemented a temporary fix for the BankValue parameter of a Bank Field 9417to 9418support all constant values, now including the Zero and One opcodes. 9419Evaluation of this parameter must eventually be converted to a full 9420TermArg 9421evaluation. A not-implemented error is now returned (temporarily) for 9422non- 9423constant values for this parameter. 9424 9425Fixed problem reports (Fiodor Suietov) integrated: 9426- Fix for premature object deletion after CopyObject on Operation Region 9427(BZ 9428350) 9429 9430Example Code and Data Size: These are the sizes for the OS-independent 9431acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9432debug version of the code includes the debug output trace mechanism and 9433has 9434a much larger code and data size. 9435 9436 Previous Release: 9437 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 9438 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 9439 Current Release: 9440 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 9441 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 9442 9443 94442) iASL Compiler/Disassembler and Tools: 9445 9446No changes for this release. 9447 9448---------------------------------------- 944907 July 2006. Summary of changes for version 20060707: 9450 94511) ACPI CA Core Subsystem: 9452 9453Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 9454that do not allow the initialization of address pointers within packed 9455structures - even though the hardware itself may support misaligned 9456transfers. Some of the debug data structures are packed by default to 9457minimize size. 9458 9459Added an error message for the case where AcpiOsGetThreadId() returns 9460zero. 9461A non-zero value is required by the core ACPICA code to ensure the proper 9462operation of AML mutexes and recursive control methods. 9463 9464The DSDT is now the only ACPI table that determines whether the AML 9465interpreter is in 32-bit or 64-bit mode. Not really a functional change, 9466but 9467the hooks for per-table 32/64 switching have been removed from the code. 9468A 9469clarification to the ACPI specification is forthcoming in ACPI 3.0B. 9470 9471Fixed a possible leak of an OwnerID in the error path of 9472AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 9473deletion to a single place in AcpiTbUninstallTable to correct possible 9474leaks 9475when using the AcpiTbDeleteTablesByType interface (with assistance from 9476Lance Ortiz.) 9477 9478Fixed a problem with Serialized control methods where the semaphore 9479associated with the method could be over-signaled after multiple method 9480invocations. 9481 9482Fixed two issues with the locking of the internal namespace data 9483structure. 9484Both the Unload() operator and AcpiUnloadTable interface now lock the 9485namespace during the namespace deletion associated with the table unload 9486(with assistance from Linn Crosetto.) 9487 9488Fixed problem reports (Valery Podrezov) integrated: 9489- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 9490 9491Fixed problem reports (Fiodor Suietov) integrated: 9492- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 9493- On Address Space handler deletion, needless deactivation call (BZ 374) 9494- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 9495375) 9496- Possible memory leak, Notify sub-objects of Processor, Power, 9497ThermalZone 9498(BZ 376) 9499- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 9500- Minimum Length of RSDT should be validated (BZ 379) 9501- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 9502Handler (BZ (380) 9503- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type 9504loaded 9505(BZ 381) 9506 9507Example Code and Data Size: These are the sizes for the OS-independent 9508acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9509debug version of the code includes the debug output trace mechanism and 9510has 9511a much larger code and data size. 9512 9513 Previous Release: 9514 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 9515 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 9516 Current Release: 9517 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 9518 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 9519 9520 95212) iASL Compiler/Disassembler and Tools: 9522 9523Fixed problem reports: 9524Compiler segfault when ASL contains a long (>1024) String declaration (BZ 9525436) 9526 9527---------------------------------------- 952823 June 2006. Summary of changes for version 20060623: 9529 95301) ACPI CA Core Subsystem: 9531 9532Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 9533allows the type to be customized to the host OS for improved efficiency 9534(since a spinlock is usually a very small object.) 9535 9536Implemented support for "ignored" bits in the ACPI registers. According 9537to 9538the ACPI specification, these bits should be preserved when writing the 9539registers via a read/modify/write cycle. There are 3 bits preserved in 9540this 9541manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 9542 9543Implemented the initial deployment of new OSL mutex interfaces. Since 9544some 9545host operating systems have separate mutex and semaphore objects, this 9546feature was requested. The base code now uses mutexes (and the new mutex 9547interfaces) wherever a binary semaphore was used previously. However, for 9548the current release, the mutex interfaces are defined as macros to map 9549them 9550to the existing semaphore interfaces. Therefore, no OSL changes are 9551required 9552at this time. (See acpiosxf.h) 9553 9554Fixed several problems with the support for the control method SyncLevel 9555parameter. The SyncLevel now works according to the ACPI specification 9556and 9557in concert with the Mutex SyncLevel parameter, since the current 9558SyncLevel 9559is a property of the executing thread. Mutual exclusion for control 9560methods 9561is now implemented with a mutex instead of a semaphore. 9562 9563Fixed three instances of the use of the C shift operator in the bitfield 9564support code (exfldio.c) to avoid the use of a shift value larger than 9565the 9566target data width. The behavior of C compilers is undefined in this case 9567and 9568can cause unpredictable results, and therefore the case must be detected 9569and 9570avoided. (Fiodor Suietov) 9571 9572Added an info message whenever an SSDT or OEM table is loaded dynamically 9573via the Load() or LoadTable() ASL operators. This should improve 9574debugging 9575capability since it will show exactly what tables have been loaded 9576(beyond 9577the tables present in the RSDT/XSDT.) 9578 9579Example Code and Data Size: These are the sizes for the OS-independent 9580acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9581debug version of the code includes the debug output trace mechanism and 9582has 9583a much larger code and data size. 9584 9585 Previous Release: 9586 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 9587 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 9588 Current Release: 9589 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 9590 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 9591 9592 95932) iASL Compiler/Disassembler and Tools: 9594 9595No changes for this release. 9596 9597---------------------------------------- 959808 June 2006. Summary of changes for version 20060608: 9599 96001) ACPI CA Core Subsystem: 9601 9602Converted the locking mutex used for the ACPI hardware to a spinlock. 9603This 9604change should eliminate all problems caused by attempting to acquire a 9605semaphore at interrupt level, and it means that all ACPICA external 9606interfaces that directly access the ACPI hardware can be safely called 9607from 9608interrupt level. OSL code that implements the semaphore interfaces should 9609be 9610able to eliminate any workarounds for being called at interrupt level. 9611 9612Fixed a regression introduced in 20060526 where the ACPI device 9613initialization could be prematurely aborted with an AE_NOT_FOUND if a 9614device 9615did not have an optional _INI method. 9616 9617Fixed an IndexField issue where a write to the Data Register should be 9618limited in size to the AccessSize (width) of the IndexField itself. (BZ 9619433, 9620Fiodor Suietov) 9621 9622Fixed problem reports (Valery Podrezov) integrated: 9623- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 9624 9625Fixed problem reports (Fiodor Suietov) integrated: 9626- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 9627 9628Removed four global mutexes that were obsolete and were no longer being 9629used. 9630 9631Example Code and Data Size: These are the sizes for the OS-independent 9632acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9633debug version of the code includes the debug output trace mechanism and 9634has 9635a much larger code and data size. 9636 9637 Previous Release: 9638 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 9639 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 9640 Current Release: 9641 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 9642 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 9643 9644 96452) iASL Compiler/Disassembler and Tools: 9646 9647Fixed a fault when using -g option (get tables from registry) on Windows 9648machines. 9649 9650Fixed problem reports integrated: 9651- Generate error if CreateField NumBits parameter is zero. (BZ 405) 9652- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 9653Suietov) 9654- Global table revision override (-r) is ignored (BZ 413) 9655 9656---------------------------------------- 965726 May 2006. Summary of changes for version 20060526: 9658 96591) ACPI CA Core Subsystem: 9660 9661Restructured, flattened, and simplified the internal interfaces for 9662namespace object evaluation - resulting in smaller code, less CPU stack 9663use, 9664and fewer interfaces. (With assistance from Mikhail Kouzmich) 9665 9666Fixed a problem with the CopyObject operator where the first parameter 9667was 9668not typed correctly for the parser, interpreter, compiler, and 9669disassembler. 9670Caused various errors and unexpected behavior. 9671 9672Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 9673produced incorrect results with some C compilers. Since the behavior of C 9674compilers when the shift value is larger than the datatype width is 9675apparently not well defined, the interpreter now detects this condition 9676and 9677simply returns zero as expected in all such cases. (BZ 395) 9678 9679Fixed problem reports (Valery Podrezov) integrated: 9680- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 9681- Allow interpreter to handle nested method declarations (BZ 5361) 9682 9683Fixed problem reports (Fiodor Suietov) integrated: 9684- AcpiTerminate doesn't free debug memory allocation list objects (BZ 9685355) 9686- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 9687356) 9688- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 9689- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 9690- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 9691- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 9692- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 9693- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 9694- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 9695365) 9696- Status of the Global Initialization Handler call not used (BZ 366) 9697- Incorrect object parameter to Global Initialization Handler (BZ 367) 9698 9699Example Code and Data Size: These are the sizes for the OS-independent 9700acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9701debug version of the code includes the debug output trace mechanism and 9702has 9703a much larger code and data size. 9704 9705 Previous Release: 9706 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 9707 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 9708 Current Release: 9709 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 9710 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 9711 9712 97132) iASL Compiler/Disassembler and Tools: 9714 9715Modified the parser to allow the names IO, DMA, and IRQ to be used as 9716namespace identifiers with no collision with existing resource descriptor 9717macro names. This provides compatibility with other ASL compilers and is 9718most useful for disassembly/recompilation of existing tables without 9719parse 9720errors. (With assistance from Thomas Renninger) 9721 9722Disassembler: fixed an incorrect disassembly problem with the 9723DataTableRegion and CopyObject operators. Fixed a possible fault during 9724disassembly of some Alias operators. 9725 9726---------------------------------------- 972712 May 2006. Summary of changes for version 20060512: 9728 97291) ACPI CA Core Subsystem: 9730 9731Replaced the AcpiOsQueueForExecution interface with a new interface named 9732AcpiOsExecute. The major difference is that the new interface does not 9733have 9734a Priority parameter, this appeared to be useless and has been replaced 9735by 9736a 9737Type parameter. The Type tells the host what type of execution is being 9738requested, such as global lock handler, notify handler, GPE handler, etc. 9739This allows the host to queue and execute the request as appropriate for 9740the 9741request type, possibly using different work queues and different 9742priorities 9743for the various request types. This enables fixes for multithreading 9744deadlock problems such as BZ #5534, and will require changes to all 9745existing 9746OS interface layers. (Alexey Starikovskiy and Bob Moore) 9747 9748Fixed a possible memory leak associated with the support for the so- 9749called 9750"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 9751Suietov) 9752 9753Fixed a problem with the Load() operator where a table load from an 9754operation region could overwrite an internal table buffer by up to 7 9755bytes 9756and cause alignment faults on IPF systems. (With assistance from Luming 9757Yu) 9758 9759Example Code and Data Size: These are the sizes for the OS-independent 9760acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9761debug version of the code includes the debug output trace mechanism and 9762has 9763a much larger code and data size. 9764 9765 Previous Release: 9766 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 9767 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 9768 Current Release: 9769 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 9770 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 9771 9772 9773 97742) iASL Compiler/Disassembler and Tools: 9775 9776Disassembler: Implemented support to cross reference the internal 9777namespace 9778and automatically generate ASL External() statements for symbols not 9779defined 9780within the current table being disassembled. This will simplify the 9781disassembly and recompilation of interdependent tables such as SSDTs 9782since 9783these statements will no longer have to be added manually. 9784 9785Disassembler: Implemented experimental support to automatically detect 9786invocations of external control methods and generate appropriate 9787External() 9788statements. This is problematic because the AML cannot be correctly 9789parsed 9790until the number of arguments for each control method is known. 9791Currently, 9792standalone method invocations and invocations as the source operand of a 9793Store() statement are supported. 9794 9795Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 9796LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 9797LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 9798more readable and likely closer to the original ASL source. 9799 9800---------------------------------------- 980121 April 2006. Summary of changes for version 20060421: 9802 98031) ACPI CA Core Subsystem: 9804 9805Removed a device initialization optimization introduced in 20051216 where 9806the _STA method was not run unless an _INI was also present for the same 9807device. This optimization could cause problems because it could allow 9808_INI 9809methods to be run within a not-present device subtree. (If a not-present 9810device had no _INI, _STA would not be run, the not-present status would 9811not 9812be discovered, and the children of the device would be incorrectly 9813traversed.) 9814 9815Implemented a new _STA optimization where namespace subtrees that do not 9816contain _INI are identified and ignored during device initialization. 9817Selectively running _STA can significantly improve boot time on large 9818machines (with assistance from Len Brown.) 9819 9820Implemented support for the device initialization case where the returned 9821_STA flags indicate a device not-present but functioning. In this case, 9822_INI 9823is not run, but the device children are examined for presence, as per the 9824ACPI specification. 9825 9826Implemented an additional change to the IndexField support in order to 9827conform to MS behavior. The value written to the Index Register is not 9828simply a byte offset, it is a byte offset in units of the access width of 9829the parent Index Field. (Fiodor Suietov) 9830 9831Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 9832interface is called during the creation of all AML operation regions, and 9833allows the host OS to exert control over what addresses it will allow the 9834AML code to access. Operation Regions whose addresses are disallowed will 9835cause a runtime exception when they are actually accessed (will not 9836affect 9837or abort table loading.) See oswinxf or osunixxf for an example 9838implementation. 9839 9840Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 9841interface allows the host OS to match the various "optional" 9842interface/behavior strings for the _OSI predefined control method as 9843appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 9844for an example implementation. 9845 9846Restructured and corrected various problems in the exception handling 9847code 9848paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 9849(with assistance from Takayoshi Kochi.) 9850 9851Modified the Linux source converter to ignore quoted string literals 9852while 9853converting identifiers from mixed to lower case. This will correct 9854problems 9855with the disassembler and other areas where such strings must not be 9856modified. 9857 9858The ACPI_FUNCTION_* macros no longer require quotes around the function 9859name. This allows the Linux source converter to convert the names, now 9860that 9861the converter ignores quoted strings. 9862 9863Example Code and Data Size: These are the sizes for the OS-independent 9864acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9865debug version of the code includes the debug output trace mechanism and 9866has 9867a much larger code and data size. 9868 9869 Previous Release: 9870 9871 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 9872 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 9873 Current Release: 9874 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 9875 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 9876 9877 98782) iASL Compiler/Disassembler and Tools: 9879 9880Implemented 3 new warnings for iASL, and implemented multiple warning 9881levels 9882(w2 flag). 9883 98841) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is 9885not 9886WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 9887check for the possible timeout, a warning is issued. 9888 98892) Useless operators: If an ASL operator does not specify an optional 9890target 9891operand and it also does not use the function return value from the 9892operator, a warning is issued since the operator effectively does 9893nothing. 9894 98953) Unreferenced objects: If a namespace object is created, but never 9896referenced, a warning is issued. This is a warning level 2 since there 9897are 9898cases where this is ok, such as when a secondary table is loaded that 9899uses 9900the unreferenced objects. Even so, care is taken to only flag objects 9901that 9902don't look like they will ever be used. For example, the reserved methods 9903(starting with an underscore) are usually not referenced because it is 9904expected that the OS will invoke them. 9905 9906---------------------------------------- 990731 March 2006. Summary of changes for version 20060331: 9908 99091) ACPI CA Core Subsystem: 9910 9911Implemented header file support for the following additional ACPI tables: 9912ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this 9913support, 9914all current and known ACPI tables are now defined in the ACPICA headers 9915and 9916are available for use by device drivers and other software. 9917 9918Implemented support to allow tables that contain ACPI names with invalid 9919characters to be loaded. Previously, this would cause the table load to 9920fail, but since there are several known cases of such tables on existing 9921machines, this change was made to enable ACPI support for them. Also, 9922this 9923matches the behavior of the Microsoft ACPI implementation. 9924 9925Fixed a couple regressions introduced during the memory optimization in 9926the 992720060317 release. The namespace node definition required additional 9928reorganization and an internal datatype that had been changed to 8-bit 9929was 9930restored to 32-bit. (Valery Podrezov) 9931 9932Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 9933could be passed through to AcpiOsReleaseObject which is unexpected. Such 9934null pointers are now trapped and ignored, matching the behavior of the 9935previous implementation before the deployment of AcpiOsReleaseObject. 9936(Valery Podrezov, Fiodor Suietov) 9937 9938Fixed a memory mapping leak during the deletion of a SystemMemory 9939operation 9940region where a cached memory mapping was not deleted. This became a 9941noticeable problem for operation regions that are defined within 9942frequently 9943used control methods. (Dana Meyers) 9944 9945Reorganized the ACPI table header files into two main files: one for the 9946ACPI tables consumed by the ACPICA core, and another for the 9947miscellaneous 9948ACPI tables that are consumed by the drivers and other software. The 9949various 9950FADT definitions were merged into one common section and three different 9951tables (ACPI 1.0, 1.0+, and 2.0) 9952 9953Example Code and Data Size: These are the sizes for the OS-independent 9954acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9955debug version of the code includes the debug output trace mechanism and 9956has 9957a much larger code and data size. 9958 9959 Previous Release: 9960 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 9961 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 9962 Current Release: 9963 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 9964 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 9965 9966 99672) iASL Compiler/Disassembler and Tools: 9968 9969Disassembler: Implemented support to decode and format all non-AML ACPI 9970tables (tables other than DSDTs and SSDTs.) This includes the new tables 9971added to the ACPICA headers, therefore all current and known ACPI tables 9972are 9973supported. 9974 9975Disassembler: The change to allow ACPI names with invalid characters also 9976enables the disassembly of such tables. Invalid characters within names 9977are 9978changed to '*' to make the name printable; the iASL compiler will still 9979generate an error for such names, however, since this is an invalid ACPI 9980character. 9981 9982Implemented an option for AcpiXtract (-a) to extract all tables found in 9983the 9984input file. The default invocation extracts only the DSDTs and SSDTs. 9985 9986Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 9987makefile for the AcpiXtract utility. 9988 9989---------------------------------------- 999017 March 2006. Summary of changes for version 20060317: 9991 99921) ACPI CA Core Subsystem: 9993 9994Implemented the use of a cache object for all internal namespace nodes. 9995Since there are about 1000 static nodes in a typical system, this will 9996decrease memory use for cache implementations that minimize per- 9997allocation 9998overhead (such as a slab allocator.) 9999 10000Removed the reference count mechanism for internal namespace nodes, since 10001it 10002was deemed unnecessary. This reduces the size of each namespace node by 10003about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit 10004case, 10005and 32 bytes for the 64-bit case. 10006 10007Optimized several internal data structures to reduce object size on 64- 10008bit 10009platforms by packing data within the 64-bit alignment. This includes the 10010frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 10011instances corresponding to the namespace objects. 10012 10013Added two new strings for the predefined _OSI method: "Windows 2001.1 10014SP1" 10015and "Windows 2006". 10016 10017Split the allocation tracking mechanism out to a separate file, from 10018utalloc.c to uttrack.c. This mechanism appears to be only useful for 10019application-level code. Kernels may wish to not include uttrack.c in 10020distributions. 10021 10022Removed all remnants of the obsolete ACPI_REPORT_* macros and the 10023associated 10024code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 10025macros.) 10026 10027Code and Data Size: These are the sizes for the acpica.lib produced by 10028the 10029Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 10030ACPI 10031driver or OSPM code. The debug version of the code includes the debug 10032output 10033trace mechanism and has a much larger code and data size. Note that these 10034values will vary depending on the efficiency of the compiler and the 10035compiler options used during generation. 10036 10037 Previous Release: 10038 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 10039 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 10040 Current Release: 10041 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 10042 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 10043 10044 100452) iASL Compiler/Disassembler and Tools: 10046 10047Implemented an ANSI C version of the acpixtract utility. This version 10048will 10049automatically extract the DSDT and all SSDTs from the input acpidump text 10050file and dump the binary output to separate files. It can also display a 10051summary of the input file including the headers for each table found and 10052will extract any single ACPI table, with any signature. (See 10053source/tools/acpixtract) 10054 10055---------------------------------------- 1005610 March 2006. Summary of changes for version 20060310: 10057 100581) ACPI CA Core Subsystem: 10059 10060Tagged all external interfaces to the subsystem with the new 10061ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to 10062assist 10063kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 10064macro. The default definition is NULL. 10065 10066Added the ACPI_THREAD_ID type for the return value from 10067AcpiOsGetThreadId. 10068This allows the host to define this as necessary to simplify kernel 10069integration. The default definition is ACPI_NATIVE_UINT. 10070 10071Fixed two interpreter problems related to error processing, the deletion 10072of 10073objects, and placing invalid pointers onto the internal operator result 10074stack. BZ 6028, 6151 (Valery Podrezov) 10075 10076Increased the reference count threshold where a warning is emitted for 10077large 10078reference counts in order to eliminate unnecessary warnings on systems 10079with 10080large namespaces (especially 64-bit.) Increased the value from 0x400 to 100810x800. 10082 10083Due to universal disagreement as to the meaning of the 'c' in the 10084calloc() 10085function, the ACPI_MEM_CALLOCATE macro has been renamed to 10086ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 10087ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 10088ACPI_FREE. 10089 10090Code and Data Size: These are the sizes for the acpica.lib produced by 10091the 10092Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 10093ACPI 10094driver or OSPM code. The debug version of the code includes the debug 10095output 10096trace mechanism and has a much larger code and data size. Note that these 10097values will vary depending on the efficiency of the compiler and the 10098compiler options used during generation. 10099 10100 Previous Release: 10101 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 10102 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 10103 Current Release: 10104 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 10105 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 10106 10107 101082) iASL Compiler/Disassembler: 10109 10110Disassembler: implemented support for symbolic resource descriptor 10111references. If a CreateXxxxField operator references a fixed offset 10112within 10113a 10114resource descriptor, a name is assigned to the descriptor and the offset 10115is 10116translated to the appropriate resource tag and pathname. The addition of 10117this support brings the disassembled code very close to the original ASL 10118source code and helps eliminate run-time errors when the disassembled 10119code 10120is modified (and recompiled) in such a way as to invalidate the original 10121fixed offsets. 10122 10123Implemented support for a Descriptor Name as the last parameter to the 10124ASL 10125Register() macro. This parameter was inadvertently left out of the ACPI 10126specification, and will be added for ACPI 3.0b. 10127 10128Fixed a problem where the use of the "_OSI" string (versus the full path 10129"\_OSI") caused an internal compiler error. ("No back ptr to op") 10130 10131Fixed a problem with the error message that occurs when an invalid string 10132is 10133used for a _HID object (such as one with an embedded asterisk: 10134"*PNP010A".) 10135The correct message is now displayed. 10136 10137---------------------------------------- 1013817 February 2006. Summary of changes for version 20060217: 10139 101401) ACPI CA Core Subsystem: 10141 10142Implemented a change to the IndexField support to match the behavior of 10143the 10144Microsoft AML interpreter. The value written to the Index register is now 10145a 10146byte offset, no longer an index based upon the width of the Data 10147register. 10148This should fix IndexField problems seen on some machines where the Data 10149register is not exactly one byte wide. The ACPI specification will be 10150clarified on this point. 10151 10152Fixed a problem where several resource descriptor types could overrun the 10153internal descriptor buffer due to size miscalculation: VendorShort, 10154VendorLong, and Interrupt. This was noticed on IA64 machines, but could 10155affect all platforms. 10156 10157Fixed a problem where individual resource descriptors were misaligned 10158within 10159the internal buffer, causing alignment faults on IA64 platforms. 10160 10161Code and Data Size: These are the sizes for the acpica.lib produced by 10162the 10163Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 10164ACPI 10165driver or OSPM code. The debug version of the code includes the debug 10166output 10167trace mechanism and has a much larger code and data size. Note that these 10168values will vary depending on the efficiency of the compiler and the 10169compiler options used during generation. 10170 10171 Previous Release: 10172 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 10173 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 10174 Current Release: 10175 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 10176 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 10177 10178 101792) iASL Compiler/Disassembler: 10180 10181Implemented support for new reserved names: _WDG and _WED are Microsoft 10182extensions for Windows Instrumentation Management, _TDL is a new ACPI- 10183defined method (Throttling Depth Limit.) 10184 10185Fixed a problem where a zero-length VendorShort or VendorLong resource 10186descriptor was incorrectly emitted as a descriptor of length one. 10187 10188---------------------------------------- 1018910 February 2006. Summary of changes for version 20060210: 10190 101911) ACPI CA Core Subsystem: 10192 10193Removed a couple of extraneous ACPI_ERROR messages that appeared during 10194normal execution. These became apparent after the conversion from 10195ACPI_DEBUG_PRINT. 10196 10197Fixed a problem where the CreateField operator could hang if the BitIndex 10198or 10199NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 10200 10201Fixed a problem where a DeRefOf operation on a buffer object incorrectly 10202failed with an exception. This also fixes a couple of related RefOf and 10203DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 10204 10205Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead 10206of 10207AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, 10208BZ 102095480) 10210 10211Implemented a memory cleanup at the end of the execution of each 10212iteration 10213of an AML While() loop, preventing the accumulation of outstanding 10214objects. 10215(Valery Podrezov, BZ 5427) 10216 10217Eliminated a chunk of duplicate code in the object resolution code. 10218(Valery 10219Podrezov, BZ 5336) 10220 10221Fixed several warnings during the 64-bit code generation. 10222 10223The AcpiSrc source code conversion tool now inserts one line of 10224whitespace 10225after an if() statement that is followed immediately by a comment, 10226improving 10227readability of the Linux code. 10228 10229Code and Data Size: The current and previous library sizes for the core 10230subsystem are shown below. These are the code and data sizes for the 10231acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10232These 10233values do not include any ACPI driver or OSPM code. The debug version of 10234the 10235code includes the debug output trace mechanism and has a much larger code 10236and data size. Note that these values will vary depending on the 10237efficiency 10238of the compiler and the compiler options used during generation. 10239 10240 Previous Release: 10241 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 10242 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 10243 Current Release: 10244 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 10245 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 10246 10247 102482) iASL Compiler/Disassembler: 10249 10250Fixed a problem with the disassembly of a BankField operator with a 10251complex 10252expression for the BankValue parameter. 10253 10254---------------------------------------- 1025527 January 2006. Summary of changes for version 20060127: 10256 102571) ACPI CA Core Subsystem: 10258 10259Implemented support in the Resource Manager to allow unresolved 10260namestring 10261references within resource package objects for the _PRT method. This 10262support 10263is in addition to the previously implemented unresolved reference support 10264within the AML parser. If the interpreter slack mode is enabled, these 10265unresolved references will be passed through to the caller as a NULL 10266package 10267entry. 10268 10269Implemented and deployed new macros and functions for error and warning 10270messages across the subsystem. These macros are simpler and generate less 10271code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 10272ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 10273macros remain defined to allow ACPI drivers time to migrate to the new 10274macros. 10275 10276Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of 10277the 10278Acquire/Release Lock OSL interfaces. 10279 10280Fixed a problem where Alias ASL operators are sometimes not correctly 10281resolved, in both the interpreter and the iASL compiler. 10282 10283Fixed several problems with the implementation of the 10284ConcatenateResTemplate 10285ASL operator. As per the ACPI specification, zero length buffers are now 10286treated as a single EndTag. One-length buffers always cause a fatal 10287exception. Non-zero length buffers that do not end with a full 2-byte 10288EndTag 10289cause a fatal exception. 10290 10291Fixed a possible structure overwrite in the AcpiGetObjectInfo external 10292interface. (With assistance from Thomas Renninger) 10293 10294Code and Data Size: The current and previous library sizes for the core 10295subsystem are shown below. These are the code and data sizes for the 10296acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10297These 10298values do not include any ACPI driver or OSPM code. The debug version of 10299the 10300code includes the debug output trace mechanism and has a much larger code 10301and data size. Note that these values will vary depending on the 10302efficiency 10303of the compiler and the compiler options used during generation. 10304 10305 Previous Release: 10306 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 10307 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 10308 Current Release: 10309 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 10310 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 10311 10312 103132) iASL Compiler/Disassembler: 10314 10315Fixed an internal error that was generated for any forward references to 10316ASL 10317Alias objects. 10318 10319---------------------------------------- 1032013 January 2006. Summary of changes for version 20060113: 10321 103221) ACPI CA Core Subsystem: 10323 10324Added 2006 copyright to all module headers and signons. This affects 10325virtually every file in the ACPICA core subsystem, iASL compiler, and the 10326utilities. 10327 10328Enhanced the ACPICA error reporting in order to simplify user migration 10329to 10330the non-debug version of ACPICA. Replaced all instances of the 10331ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN 10332debug 10333levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 10334respectively. This preserves all error and warning messages in the non- 10335debug 10336version of the ACPICA code (this has been referred to as the "debug lite" 10337option.) Over 200 cases were converted to create a total of over 380 10338error/warning messages across the ACPICA code. This increases the code 10339and 10340data size of the default non-debug version of the code somewhat (about 1034113K), 10342but all error/warning reporting may be disabled if desired (and code 10343eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 10344configuration option. The size of the debug version of ACPICA remains 10345about 10346the same. 10347 10348Fixed a memory leak within the AML Debugger "Set" command. One object was 10349not properly deleted for every successful invocation of the command. 10350 10351Code and Data Size: The current and previous library sizes for the core 10352subsystem are shown below. These are the code and data sizes for the 10353acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10354These 10355values do not include any ACPI driver or OSPM code. The debug version of 10356the 10357code includes the debug output trace mechanism and has a much larger code 10358and data size. Note that these values will vary depending on the 10359efficiency 10360of the compiler and the compiler options used during generation. 10361 10362 Previous Release: 10363 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 10364 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 10365 Current Release: 10366 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 10367 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 10368 10369 103702) iASL Compiler/Disassembler: 10371 10372The compiler now officially supports the ACPI 3.0a specification that was 10373released on December 30, 2005. (Specification is available at 10374www.acpi.info) 10375 10376---------------------------------------- 1037716 December 2005. Summary of changes for version 20051216: 10378 103791) ACPI CA Core Subsystem: 10380 10381Implemented optional support to allow unresolved names within ASL Package 10382objects. A null object is inserted in the package when a named reference 10383cannot be located in the current namespace. Enabled via the interpreter 10384slack flag, this should eliminate AE_NOT_FOUND exceptions seen on 10385machines 10386that contain such code. 10387 10388Implemented an optimization to the initialization sequence that can 10389improve 10390boot time. During ACPI device initialization, the _STA method is now run 10391if 10392and only if the _INI method exists. The _STA method is used to determine 10393if 10394the device is present; An _INI can only be run if _STA returns present, 10395but 10396it is a waste of time to run the _STA method if the _INI does not exist. 10397(Prototype and assistance from Dong Wei) 10398 10399Implemented use of the C99 uintptr_t for the pointer casting macros if it 10400is 10401available in the current compiler. Otherwise, the default (void *) cast 10402is 10403used as before. 10404 10405Fixed some possible memory leaks found within the execution path of the 10406Break, Continue, If, and CreateField operators. (Valery Podrezov) 10407 10408Fixed a problem introduced in the 20051202 release where an exception is 10409generated during method execution if a control method attempts to declare 10410another method. 10411 10412Moved resource descriptor string constants that are used by both the AML 10413disassembler and AML debugger to the common utilities directory so that 10414these components are independent. 10415 10416Implemented support in the AcpiExec utility (-e switch) to globally 10417ignore 10418exceptions during control method execution (method is not aborted.) 10419 10420Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 10421generation. 10422 10423Code and Data Size: The current and previous library sizes for the core 10424subsystem are shown below. These are the code and data sizes for the 10425acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10426These 10427values do not include any ACPI driver or OSPM code. The debug version of 10428the 10429code includes the debug output trace mechanism and has a much larger code 10430and data size. Note that these values will vary depending on the 10431efficiency 10432of the compiler and the compiler options used during generation. 10433 10434 Previous Release: 10435 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 10436 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 10437 Current Release: 10438 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 10439 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 10440 10441 104422) iASL Compiler/Disassembler: 10443 10444Fixed a problem where a CPU stack overflow fault could occur if a 10445recursive 10446method call was made from within a Return statement. 10447 10448---------------------------------------- 1044902 December 2005. Summary of changes for version 20051202: 10450 104511) ACPI CA Core Subsystem: 10452 10453Modified the parsing of control methods to no longer create namespace 10454objects during the first pass of the parse. Objects are now created only 10455during the execute phase, at the moment the namespace creation operator 10456is 10457encountered in the AML (Name, OperationRegion, CreateByteField, etc.) 10458This 10459should eliminate ALREADY_EXISTS exceptions seen on some machines where 10460reentrant control methods are protected by an AML mutex. The mutex will 10461now 10462correctly block multiple threads from attempting to create the same 10463object 10464more than once. 10465 10466Increased the number of available Owner Ids for namespace object tracking 10467from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen 10468on 10469some machines with a large number of ACPI tables (either static or 10470dynamic). 10471 10472Fixed a problem with the AcpiExec utility where a fault could occur when 10473the 10474-b switch (batch mode) is used. 10475 10476Enhanced the namespace dump routine to output the owner ID for each 10477namespace object. 10478 10479Code and Data Size: The current and previous library sizes for the core 10480subsystem are shown below. These are the code and data sizes for the 10481acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10482These 10483values do not include any ACPI driver or OSPM code. The debug version of 10484the 10485code includes the debug output trace mechanism and has a much larger code 10486and data size. Note that these values will vary depending on the 10487efficiency 10488of the compiler and the compiler options used during generation. 10489 10490 Previous Release: 10491 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 10492 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 10493 Current Release: 10494 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 10495 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 10496 10497 104982) iASL Compiler/Disassembler: 10499 10500Fixed a parse error during compilation of certain Switch/Case constructs. 10501To 10502simplify the parse, the grammar now allows for multiple Default 10503statements 10504and this error is now detected and flagged during the analysis phase. 10505 10506Disassembler: The disassembly now includes the contents of the original 10507table header within a comment at the start of the file. This includes the 10508name and version of the original ASL compiler. 10509 10510---------------------------------------- 1051117 November 2005. Summary of changes for version 20051117: 10512 105131) ACPI CA Core Subsystem: 10514 10515Fixed a problem in the AML parser where the method thread count could be 10516decremented below zero if any errors occurred during the method parse 10517phase. 10518This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some 10519machines. 10520This also fixed a related regression with the mechanism that detects and 10521corrects methods that cannot properly handle reentrancy (related to the 10522deployment of the new OwnerId mechanism.) 10523 10524Eliminated the pre-parsing of control methods (to detect errors) during 10525table load. Related to the problem above, this was causing unwind issues 10526if 10527any errors occurred during the parse, and it seemed to be overkill. A 10528table 10529load should not be aborted if there are problems with any single control 10530method, thus rendering this feature rather pointless. 10531 10532Fixed a problem with the new table-driven resource manager where an 10533internal 10534buffer overflow could occur for small resource templates. 10535 10536Implemented a new external interface, AcpiGetVendorResource. This 10537interface 10538will find and return a vendor-defined resource descriptor within a _CRS 10539or 10540_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn 10541Helgaas. 10542 10543Removed the length limit (200) on string objects as per the upcoming ACPI 105443.0A specification. This affects the following areas of the interpreter: 105451) 10546any implicit conversion of a Buffer to a String, 2) a String object 10547result 10548of the ASL Concatentate operator, 3) the String object result of the ASL 10549ToString operator. 10550 10551Fixed a problem in the Windows OS interface layer (OSL) where a 10552WAIT_FOREVER 10553on a semaphore object would incorrectly timeout. This allows the 10554multithreading features of the AcpiExec utility to work properly under 10555Windows. 10556 10557Updated the Linux makefiles for the iASL compiler and AcpiExec to include 10558the recently added file named "utresrc.c". 10559 10560Code and Data Size: The current and previous library sizes for the core 10561subsystem are shown below. These are the code and data sizes for the 10562acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10563These 10564values do not include any ACPI driver or OSPM code. The debug version of 10565the 10566code includes the debug output trace mechanism and has a much larger code 10567and data size. Note that these values will vary depending on the 10568efficiency 10569of the compiler and the compiler options used during generation. 10570 10571 Previous Release: 10572 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 10573 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 10574 Current Release: 10575 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 10576 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 10577 10578 105792) iASL Compiler/Disassembler: 10580 10581Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 10582specification. For the iASL compiler, this means that string literals 10583within 10584the source ASL can be of any length. 10585 10586Enhanced the listing output to dump the AML code for resource descriptors 10587immediately after the ASL code for each descriptor, instead of in a block 10588at 10589the end of the entire resource template. 10590 10591Enhanced the compiler debug output to dump the entire original parse tree 10592constructed during the parse phase, before any transforms are applied to 10593the 10594tree. The transformed tree is dumped also. 10595 10596---------------------------------------- 1059702 November 2005. Summary of changes for version 20051102: 10598 105991) ACPI CA Core Subsystem: 10600 10601Modified the subsystem initialization sequence to improve GPE support. 10602The 10603GPE initialization has been split into two parts in order to defer 10604execution 10605of the _PRW methods (Power Resources for Wake) until after the hardware 10606is 10607fully initialized and the SCI handler is installed. This allows the _PRW 10608methods to access fields protected by the Global Lock. This will fix 10609systems 10610where a NO_GLOBAL_LOCK exception has been seen during initialization. 10611 10612Converted the ACPI internal object disassemble and display code within 10613the 10614AML debugger to fully table-driven operation, reducing code size and 10615increasing maintainability. 10616 10617Fixed a regression with the ConcatenateResTemplate() ASL operator 10618introduced 10619in the 20051021 release. 10620 10621Implemented support for "local" internal ACPI object types within the 10622debugger "Object" command and the AcpiWalkNamespace external interfaces. 10623These local types include RegionFields, BankFields, IndexFields, Alias, 10624and 10625reference objects. 10626 10627Moved common AML resource handling code into a new file, "utresrc.c". 10628This 10629code is shared by both the Resource Manager and the AML Debugger. 10630 10631Code and Data Size: The current and previous library sizes for the core 10632subsystem are shown below. These are the code and data sizes for the 10633acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10634These 10635values do not include any ACPI driver or OSPM code. The debug version of 10636the 10637code includes the debug output trace mechanism and has a much larger code 10638and data size. Note that these values will vary depending on the 10639efficiency 10640of the compiler and the compiler options used during generation. 10641 10642 Previous Release: 10643 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 10644 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 10645 Current Release: 10646 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 10647 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 10648 10649 106502) iASL Compiler/Disassembler: 10651 10652Fixed a problem with very large initializer lists (more than 4000 10653elements) 10654for both Buffer and Package objects where the parse stack could overflow. 10655 10656Enhanced the pre-compile source code scan for non-ASCII characters to 10657ignore 10658characters within comment fields. The scan is now always performed and is 10659no 10660longer optional, detecting invalid characters within a source file 10661immediately rather than during the parse phase or later. 10662 10663Enhanced the ASL grammar definition to force early reductions on all 10664list- 10665style grammar elements so that the overall parse stack usage is greatly 10666reduced. This should improve performance and reduce the possibility of 10667parse 10668stack overflow. 10669 10670Eliminated all reduce/reduce conflicts in the iASL parser generation. 10671Also, 10672with the addition of a %expected statement, the compiler generates from 10673source with no warnings. 10674 10675Fixed a possible segment fault in the disassembler if the input filename 10676does not contain a "dot" extension (Thomas Renninger). 10677 10678---------------------------------------- 1067921 October 2005. Summary of changes for version 20051021: 10680 106811) ACPI CA Core Subsystem: 10682 10683Implemented support for the EM64T and other x86-64 processors. This 10684essentially entails recognizing that these processors support non-aligned 10685memory transfers. Previously, all 64-bit processors were assumed to lack 10686hardware support for non-aligned transfers. 10687 10688Completed conversion of the Resource Manager to nearly full table-driven 10689operation. Specifically, the resource conversion code (convert AML to 10690internal format and the reverse) and the debug code to dump internal 10691resource descriptors are fully table-driven, reducing code and data size 10692and 10693improving maintainability. 10694 10695The OSL interfaces for Acquire and Release Lock now use a 64-bit flag 10696word 10697on 64-bit processors instead of a fixed 32-bit word. (With assistance 10698from 10699Alexey Starikovskiy) 10700 10701Implemented support within the resource conversion code for the Type- 10702Specific byte within the various ACPI 3.0 *WordSpace macros. 10703 10704Fixed some issues within the resource conversion code for the type- 10705specific 10706flags for both Memory and I/O address resource descriptors. For Memory, 10707implemented support for the MTP and TTP flags. For I/O, split the TRS and 10708TTP flags into two separate fields. 10709 10710Code and Data Size: The current and previous library sizes for the core 10711subsystem are shown below. These are the code and data sizes for the 10712acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10713These 10714values do not include any ACPI driver or OSPM code. The debug version of 10715the 10716code includes the debug output trace mechanism and has a much larger code 10717and data size. Note that these values will vary depending on the 10718efficiency 10719of the compiler and the compiler options used during generation. 10720 10721 Previous Release: 10722 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 10723 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 10724 Current Release: 10725 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 10726 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 10727 10728 10729 107302) iASL Compiler/Disassembler: 10731 10732Relaxed a compiler restriction that disallowed a ResourceIndex byte if 10733the 10734corresponding ResourceSource string was not also present in a resource 10735descriptor declaration. This restriction caused problems with existing 10736AML/ASL code that includes the Index byte without the string. When such 10737AML 10738was disassembled, it could not be compiled without modification. Further, 10739the modified code created a resource template with a different size than 10740the 10741original, breaking code that used fixed offsets into the resource 10742template 10743buffer. 10744 10745Removed a recent feature of the disassembler to ignore a lone 10746ResourceIndex 10747byte. This byte is now emitted if present so that the exact AML can be 10748reproduced when the disassembled code is recompiled. 10749 10750Improved comments and text alignment for the resource descriptor code 10751emitted by the disassembler. 10752 10753Implemented disassembler support for the ACPI 3.0 AccessSize field within 10754a 10755Register() resource descriptor. 10756 10757---------------------------------------- 1075830 September 2005. Summary of changes for version 20050930: 10759 107601) ACPI CA Core Subsystem: 10761 10762Completed a major overhaul of the Resource Manager code - specifically, 10763optimizations in the area of the AML/internal resource conversion code. 10764The 10765code has been optimized to simplify and eliminate duplicated code, CPU 10766stack 10767use has been decreased by optimizing function parameters and local 10768variables, and naming conventions across the manager have been 10769standardized 10770for clarity and ease of maintenance (this includes function, parameter, 10771variable, and struct/typedef names.) The update may force changes in some 10772driver code, depending on how resources are handled by the host OS. 10773 10774All Resource Manager dispatch and information tables have been moved to a 10775single location for clarity and ease of maintenance. One new file was 10776created, named "rsinfo.c". 10777 10778The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 10779guarantee that the argument is not evaluated twice, making them less 10780prone 10781to macro side-effects. However, since there exists the possibility of 10782additional stack use if a particular compiler cannot optimize them (such 10783as 10784in the debug generation case), the original macros are optionally 10785available. 10786Note that some invocations of the return_VALUE macro may now cause size 10787mismatch warnings; the return_UINT8 and return_UINT32 macros are provided 10788to 10789eliminate these. (From Randy Dunlap) 10790 10791Implemented a new mechanism to enable debug tracing for individual 10792control 10793methods. A new external interface, AcpiDebugTrace, is provided to enable 10794this mechanism. The intent is to allow the host OS to easily enable and 10795disable tracing for problematic control methods. This interface can be 10796easily exposed to a user or debugger interface if desired. See the file 10797psxface.c for details. 10798 10799AcpiUtCallocate will now return a valid pointer if a length of zero is 10800specified - a length of one is used and a warning is issued. This matches 10801the behavior of AcpiUtAllocate. 10802 10803Code and Data Size: The current and previous library sizes for the core 10804subsystem are shown below. These are the code and data sizes for the 10805acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10806These 10807values do not include any ACPI driver or OSPM code. The debug version of 10808the 10809code includes the debug output trace mechanism and has a much larger code 10810and data size. Note that these values will vary depending on the 10811efficiency 10812of the compiler and the compiler options used during generation. 10813 10814 Previous Release: 10815 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 10816 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 10817 Current Release: 10818 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 10819 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 10820 10821 108222) iASL Compiler/Disassembler: 10823 10824A remark is issued if the effective compile-time length of a package or 10825buffer is zero. Previously, this was a warning. 10826 10827---------------------------------------- 1082816 September 2005. Summary of changes for version 20050916: 10829 108301) ACPI CA Core Subsystem: 10831 10832Fixed a problem within the Resource Manager where support for the Generic 10833Register descriptor was not fully implemented. This descriptor is now 10834fully 10835recognized, parsed, disassembled, and displayed. 10836 10837Completely restructured the Resource Manager code to utilize table-driven 10838dispatch and lookup, eliminating many of the large switch() statements. 10839This 10840reduces overall subsystem code size and code complexity. Affects the 10841resource parsing and construction, disassembly, and debug dump output. 10842 10843Cleaned up and restructured the debug dump output for all resource 10844descriptors. Improved readability of the output and reduced code size. 10845 10846Fixed a problem where changes to internal data structures caused the 10847optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 10848 10849Code and Data Size: The current and previous library sizes for the core 10850subsystem are shown below. These are the code and data sizes for the 10851acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10852These 10853values do not include any ACPI driver or OSPM code. The debug version of 10854the 10855code includes the debug output trace mechanism and has a much larger code 10856and data size. Note that these values will vary depending on the 10857efficiency 10858of the compiler and the compiler options used during generation. 10859 10860 Previous Release: 10861 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 10862 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 10863 Current Release: 10864 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 10865 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 10866 10867 108682) iASL Compiler/Disassembler: 10869 10870Updated the disassembler to automatically insert an EndDependentFn() 10871macro 10872into the ASL stream if this macro is missing in the original AML code, 10873simplifying compilation of the resulting ASL module. 10874 10875Fixed a problem in the disassembler where a disassembled ResourceSource 10876string (within a large resource descriptor) was not surrounded by quotes 10877and 10878not followed by a comma, causing errors when the resulting ASL module was 10879compiled. Also, escape sequences within a ResourceSource string are now 10880handled correctly (especially "\\") 10881 10882---------------------------------------- 1088302 September 2005. Summary of changes for version 20050902: 10884 108851) ACPI CA Core Subsystem: 10886 10887Fixed a problem with the internal Owner ID allocation and deallocation 10888mechanisms for control method execution and recursive method invocation. 10889This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 10890messages seen on some systems. Recursive method invocation depth is 10891currently limited to 255. (Alexey Starikovskiy) 10892 10893Completely eliminated all vestiges of support for the "module-level 10894executable code" until this support is fully implemented and debugged. 10895This 10896should eliminate the NO_RETURN_VALUE exceptions seen during table load on 10897some systems that invoke this support. 10898 10899Fixed a problem within the resource manager code where the transaction 10900flags 10901for a 64-bit address descriptor were handled incorrectly in the type- 10902specific flag byte. 10903 10904Consolidated duplicate code within the address descriptor resource 10905manager 10906code, reducing overall subsystem code size. 10907 10908Fixed a fault when using the AML debugger "disassemble" command to 10909disassemble individual control methods. 10910 10911Removed references to the "release_current" directory within the Unix 10912release package. 10913 10914Code and Data Size: The current and previous core subsystem library sizes 10915are shown below. These are the code and data sizes for the acpica.lib 10916produced by the Microsoft Visual C++ 6.0 compiler. These values do not 10917include any ACPI driver or OSPM code. The debug version of the code 10918includes 10919the debug output trace mechanism and has a much larger code and data 10920size. 10921Note that these values will vary depending on the efficiency of the 10922compiler 10923and the compiler options used during generation. 10924 10925 Previous Release: 10926 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 10927 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 10928 Current Release: 10929 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 10930 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 10931 10932 109332) iASL Compiler/Disassembler: 10934 10935Implemented an error check for illegal duplicate values in the interrupt 10936and 10937dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 10938Interrupt(). 10939 10940Implemented error checking for the Irq() and IrqNoFlags() macros to 10941detect 10942too many values in the interrupt list (16 max) and invalid values in the 10943list (range 0 - 15) 10944 10945The maximum length string literal within an ASL file is now restricted to 10946200 characters as per the ACPI specification. 10947 10948Fixed a fault when using the -ln option (generate namespace listing). 10949 10950Implemented an error check to determine if a DescriptorName within a 10951resource descriptor has already been used within the current scope. 10952 10953---------------------------------------- 1095415 August 2005. Summary of changes for version 20050815: 10955 109561) ACPI CA Core Subsystem: 10957 10958Implemented a full bytewise compare to determine if a table load request 10959is 10960attempting to load a duplicate table. The compare is performed if the 10961table 10962signatures and table lengths match. This will allow different tables with 10963the same OEM Table ID and revision to be loaded - probably against the 10964ACPI 10965specification, but discovered in the field nonetheless. 10966 10967Added the changes.txt logfile to each of the zipped release packages. 10968 10969Code and Data Size: Current and previous core subsystem library sizes are 10970shown below. These are the code and data sizes for the acpica.lib 10971produced 10972by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10973any ACPI driver or OSPM code. The debug version of the code includes the 10974debug output trace mechanism and has a much larger code and data size. 10975Note 10976that these values will vary depending on the efficiency of the compiler 10977and 10978the compiler options used during generation. 10979 10980 Previous Release: 10981 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 10982 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 10983 Current Release: 10984 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 10985 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 10986 10987 109882) iASL Compiler/Disassembler: 10989 10990Fixed a problem where incorrect AML code could be generated for Package 10991objects if optimization is disabled (via the -oa switch). 10992 10993Fixed a problem with where incorrect AML code is generated for variable- 10994length packages when the package length is not specified and the number 10995of 10996initializer values is greater than 255. 10997 10998 10999---------------------------------------- 1100029 July 2005. Summary of changes for version 20050729: 11001 110021) ACPI CA Core Subsystem: 11003 11004Implemented support to ignore an attempt to install/load a particular 11005ACPI 11006table more than once. Apparently there exists BIOS code that repeatedly 11007attempts to load the same SSDT upon certain events. With assistance from 11008Venkatesh Pallipadi. 11009 11010Restructured the main interface to the AML parser in order to correctly 11011handle all exceptional conditions. This will prevent leakage of the 11012OwnerId 11013resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on 11014some 11015machines. With assistance from Alexey Starikovskiy. 11016 11017Support for "module level code" has been disabled in this version due to 11018a 11019number of issues that have appeared on various machines. The support can 11020be 11021enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 11022compilation. When the issues are fully resolved, the code will be enabled 11023by 11024default again. 11025 11026Modified the internal functions for debug print support to define the 11027FunctionName parameter as a (const char *) for compatibility with 11028compiler 11029built-in macros such as __FUNCTION__, etc. 11030 11031Linted the entire ACPICA source tree for both 32-bit and 64-bit. 11032 11033Implemented support to display an object count summary for the AML 11034Debugger 11035commands Object and Methods. 11036 11037Code and Data Size: Current and previous core subsystem library sizes are 11038shown below. These are the code and data sizes for the acpica.lib 11039produced 11040by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11041any ACPI driver or OSPM code. The debug version of the code includes the 11042debug output trace mechanism and has a much larger code and data size. 11043Note 11044that these values will vary depending on the efficiency of the compiler 11045and 11046the compiler options used during generation. 11047 11048 Previous Release: 11049 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 11050 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 11051 Current Release: 11052 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 11053 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 11054 11055 110562) iASL Compiler/Disassembler: 11057 11058Fixed a regression that appeared in the 20050708 version of the compiler 11059where an error message was inadvertently emitted for invocations of the 11060_OSI 11061reserved control method. 11062 11063---------------------------------------- 1106408 July 2005. Summary of changes for version 20050708: 11065 110661) ACPI CA Core Subsystem: 11067 11068The use of the CPU stack in the debug version of the subsystem has been 11069considerably reduced. Previously, a debug structure was declared in every 11070function that used the debug macros. This structure has been removed in 11071favor of declaring the individual elements as parameters to the debug 11072functions. This reduces the cumulative stack use during nested execution 11073of 11074ACPI function calls at the cost of a small increase in the code size of 11075the 11076debug version of the subsystem. With assistance from Alexey Starikovskiy 11077and 11078Len Brown. 11079 11080Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 11081headers to define a macro that will return the current function name at 11082runtime (such as __FUNCTION__ or _func_, etc.) The function name is used 11083by 11084the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 11085compiler-dependent header, the function name is saved on the CPU stack 11086(one 11087pointer per function.) This mechanism is used because apparently there 11088exists no standard ANSI-C defined macro that that returns the function 11089name. 11090 11091Redesigned and reimplemented the "Owner ID" mechanism used to track 11092namespace objects created/deleted by ACPI tables and control method 11093execution. A bitmap is now used to allocate and free the IDs, thus 11094solving 11095the wraparound problem present in the previous implementation. The size 11096of 11097the namespace node descriptor was reduced by 2 bytes as a result (Alexey 11098Starikovskiy). 11099 11100Removed the UINT32_BIT and UINT16_BIT types that were used for the 11101bitfield 11102flag definitions within the headers for the predefined ACPI tables. These 11103have been replaced by UINT8_BIT in order to increase the code portability 11104of 11105the subsystem. If the use of UINT8 remains a problem, we may be forced to 11106eliminate bitfields entirely because of a lack of portability. 11107 11108Enhanced the performance of the AcpiUtUpdateObjectReference procedure. 11109This 11110is a frequently used function and this improvement increases the 11111performance 11112of the entire subsystem (Alexey Starikovskiy). 11113 11114Fixed several possible memory leaks and the inverse - premature object 11115deletion (Alexey Starikovskiy). 11116 11117Code and Data Size: Current and previous core subsystem library sizes are 11118shown below. These are the code and data sizes for the acpica.lib 11119produced 11120by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11121any ACPI driver or OSPM code. The debug version of the code includes the 11122debug output trace mechanism and has a much larger code and data size. 11123Note 11124that these values will vary depending on the efficiency of the compiler 11125and 11126the compiler options used during generation. 11127 11128 Previous Release: 11129 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 11130 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 11131 Current Release: 11132 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 11133 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 11134 11135---------------------------------------- 1113624 June 2005. Summary of changes for version 20050624: 11137 111381) ACPI CA Core Subsystem: 11139 11140Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 11141the host-defined cache object. This allows the OSL implementation to 11142define 11143and type this object in any manner desired, simplifying the OSL 11144implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 11145Linux, and should be defined in the OS-specific header file for other 11146operating systems as required. 11147 11148Changed the interface to AcpiOsAcquireObject to directly return the 11149requested object as the function return (instead of ACPI_STATUS.) This 11150change was made for performance reasons, since this is the purpose of the 11151interface in the first place. AcpiOsAcquireObject is now similar to the 11152AcpiOsAllocate interface. 11153 11154Implemented a new AML debugger command named Businfo. This command 11155displays 11156information about all devices that have an associate _PRT object. The 11157_ADR, 11158_HID, _UID, and _CID are displayed for these devices. 11159 11160Modified the initialization sequence in AcpiInitializeSubsystem to call 11161the 11162OSL interface AcpiOslInitialize first, before any local initialization. 11163This 11164change was required because the global initialization now calls OSL 11165interfaces. 11166 11167Enhanced the Dump command to display the entire contents of Package 11168objects 11169(including all sub-objects and their values.) 11170 11171Restructured the code base to split some files because of size and/or 11172because the code logically belonged in a separate file. New files are 11173listed 11174below. All makefiles and project files included in the ACPI CA release 11175have 11176been updated. 11177 utilities/utcache.c /* Local cache interfaces */ 11178 utilities/utmutex.c /* Local mutex support */ 11179 utilities/utstate.c /* State object support */ 11180 interpreter/parser/psloop.c /* Main AML parse loop */ 11181 11182Code and Data Size: Current and previous core subsystem library sizes are 11183shown below. These are the code and data sizes for the acpica.lib 11184produced 11185by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11186any ACPI driver or OSPM code. The debug version of the code includes the 11187debug output trace mechanism and has a much larger code and data size. 11188Note 11189that these values will vary depending on the efficiency of the compiler 11190and 11191the compiler options used during generation. 11192 11193 Previous Release: 11194 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 11195 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 11196 Current Release: 11197 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 11198 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 11199 11200 112012) iASL Compiler/Disassembler: 11202 11203Fixed a regression introduced in version 20050513 where the use of a 11204Package 11205object within a Case() statement caused a compile time exception. The 11206original behavior has been restored (a Match() operator is emitted.) 11207 11208---------------------------------------- 1120917 June 2005. Summary of changes for version 20050617: 11210 112111) ACPI CA Core Subsystem: 11212 11213Moved the object cache operations into the OS interface layer (OSL) to 11214allow 11215the host OS to handle these operations if desired (for example, the Linux 11216OSL will invoke the slab allocator). This support is optional; the 11217compile 11218time define ACPI_USE_LOCAL_CACHE may be used to utilize the original 11219cache 11220code in the ACPI CA core. The new OSL interfaces are shown below. See 11221utalloc.c for an example implementation, and acpiosxf.h for the exact 11222interface definitions. With assistance from Alexey Starikovskiy. 11223 AcpiOsCreateCache 11224 AcpiOsDeleteCache 11225 AcpiOsPurgeCache 11226 AcpiOsAcquireObject 11227 AcpiOsReleaseObject 11228 11229Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to 11230return 11231and restore a flags parameter. This fits better with many OS lock models. 11232Note: the current execution state (interrupt handler or not) is no longer 11233passed to these interfaces. If necessary, the OSL must determine this 11234state 11235by itself, a simple and fast operation. With assistance from Alexey 11236Starikovskiy. 11237 11238Fixed a problem in the ACPI table handling where a valid XSDT was assumed 11239present if the revision of the RSDP was 2 or greater. According to the 11240ACPI 11241specification, the XSDT is optional in all cases, and the table manager 11242therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 11243Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs 11244contain 11245only the RSDT. 11246 11247Fixed an interpreter problem with the Mid() operator in the case of an 11248input 11249string where the resulting output string is of zero length. It now 11250correctly 11251returns a valid, null terminated string object instead of a string object 11252with a null pointer. 11253 11254Fixed a problem with the control method argument handling to allow a 11255store 11256to an Arg object that already contains an object of type Device. The 11257Device 11258object is now correctly overwritten. Previously, an error was returned. 11259 11260 11261Enhanced the debugger Find command to emit object values in addition to 11262the 11263found object pathnames. The output format is the same as the dump 11264namespace 11265command. 11266 11267Enhanced the debugger Set command. It now has the ability to set the 11268value 11269of any Named integer object in the namespace (Previously, only method 11270locals 11271and args could be set.) 11272 11273Code and Data Size: Current and previous core subsystem library sizes are 11274shown below. These are the code and data sizes for the acpica.lib 11275produced 11276by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11277any ACPI driver or OSPM code. The debug version of the code includes the 11278debug output trace mechanism and has a much larger code and data size. 11279Note 11280that these values will vary depending on the efficiency of the compiler 11281and 11282the compiler options used during generation. 11283 11284 Previous Release: 11285 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 11286 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 11287 Current Release: 11288 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 11289 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 11290 11291 112922) iASL Compiler/Disassembler: 11293 11294Fixed a regression in the disassembler where if/else/while constructs 11295were 11296output incorrectly. This problem was introduced in the previous release 11297(20050526). This problem also affected the single-step disassembly in the 11298debugger. 11299 11300Fixed a problem where compiling the reserved _OSI method would randomly 11301(but 11302rarely) produce compile errors. 11303 11304Enhanced the disassembler to emit compilable code in the face of 11305incorrect 11306AML resource descriptors. If the optional ResourceSourceIndex is present, 11307but the ResourceSource is not, do not emit the ResourceSourceIndex in the 11308disassembly. Otherwise, the resulting code cannot be compiled without 11309errors. 11310 11311---------------------------------------- 1131226 May 2005. Summary of changes for version 20050526: 11313 113141) ACPI CA Core Subsystem: 11315 11316Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 11317the module level (not within a control method.) These opcodes are 11318executed 11319exactly once at the time the table is loaded. This type of code was legal 11320up 11321until the release of ACPI 2.0B (2002) and is now supported within ACPI CA 11322in 11323order to provide backwards compatibility with earlier BIOS 11324implementations. 11325This eliminates the "Encountered executable code at module level" warning 11326that was previously generated upon detection of such code. 11327 11328Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 11329inadvertently be generated during the lookup of namespace objects in the 11330second pass parse of ACPI tables and control methods. It appears that 11331this 11332problem could occur during the resolution of forward references to 11333namespace 11334objects. 11335 11336Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 11337corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 11338allows the deadlock detection debug code to be compiled out in the normal 11339case, improving mutex performance (and overall subsystem performance) 11340considerably. 11341 11342Implemented a handful of miscellaneous fixes for possible memory leaks on 11343error conditions and error handling control paths. These fixes were 11344suggested by FreeBSD and the Coverity Prevent source code analysis tool. 11345 11346Added a check for a null RSDT pointer in AcpiGetFirmwareTable 11347(tbxfroot.c) 11348to prevent a fault in this error case. 11349 11350Code and Data Size: Current and previous core subsystem library sizes are 11351shown below. These are the code and data sizes for the acpica.lib 11352produced 11353by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11354any ACPI driver or OSPM code. The debug version of the code includes the 11355debug output trace mechanism and has a much larger code and data size. 11356Note 11357that these values will vary depending on the efficiency of the compiler 11358and 11359the compiler options used during generation. 11360 11361 Previous Release: 11362 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 11363 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 11364 Current Release: 11365 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 11366 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 11367 11368 113692) iASL Compiler/Disassembler: 11370 11371Implemented support to allow Type 1 and Type 2 ASL operators to appear at 11372the module level (not within a control method.) These operators will be 11373executed once at the time the table is loaded. This type of code was 11374legal 11375up until the release of ACPI 2.0B (2002) and is now supported by the iASL 11376compiler in order to provide backwards compatibility with earlier BIOS 11377ASL 11378code. 11379 11380The ACPI integer width (specified via the table revision ID or the -r 11381override, 32 or 64 bits) is now used internally during compile-time 11382constant 11383folding to ensure that constants are truncated to 32 bits if necessary. 11384Previously, the revision ID value was only emitted in the AML table 11385header. 11386 11387An error message is now generated for the Mutex and Method operators if 11388the 11389SyncLevel parameter is outside the legal range of 0 through 15. 11390 11391Fixed a problem with the Method operator ParameterTypes list handling 11392(ACPI 113933.0). Previously, more than 2 types or 2 arguments generated a syntax 11394error. 11395The actual underlying implementation of method argument typechecking is 11396still under development, however. 11397 11398---------------------------------------- 1139913 May 2005. Summary of changes for version 20050513: 11400 114011) ACPI CA Core Subsystem: 11402 11403Implemented support for PCI Express root bridges -- added support for 11404device 11405PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 11406 11407The interpreter now automatically truncates incoming 64-bit constants to 1140832 11409bits if currently executing out of a 32-bit ACPI table (Revision < 2). 11410This 11411also affects the iASL compiler constant folding. (Note: as per below, the 11412iASL compiler no longer allows 64-bit constants within 32-bit tables.) 11413 11414Fixed a problem where string and buffer objects with "static" pointers 11415(pointers to initialization data within an ACPI table) were not handled 11416consistently. The internal object copy operation now always copies the 11417data 11418to a newly allocated buffer, regardless of whether the source object is 11419static or not. 11420 11421Fixed a problem with the FromBCD operator where an implicit result 11422conversion was improperly performed while storing the result to the 11423target 11424operand. Since this is an "explicit conversion" operator, the implicit 11425conversion should never be performed on the output. 11426 11427Fixed a problem with the CopyObject operator where a copy to an existing 11428named object did not always completely overwrite the existing object 11429stored 11430at name. Specifically, a buffer-to-buffer copy did not delete the 11431existing 11432buffer. 11433 11434Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces 11435and 11436structs for consistency. 11437 11438Code and Data Size: Current and previous core subsystem library sizes are 11439shown below. These are the code and data sizes for the acpica.lib 11440produced 11441by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11442any ACPI driver or OSPM code. The debug version of the code includes the 11443debug output trace mechanism and has a much larger code and data size. 11444Note 11445that these values will vary depending on the efficiency of the compiler 11446and 11447the compiler options used during generation. 11448 11449 Previous Release: 11450 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 11451 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 11452 Current Release: (Same sizes) 11453 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 11454 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 11455 11456 114572) iASL Compiler/Disassembler: 11458 11459The compiler now emits a warning if an attempt is made to generate a 64- 11460bit 11461integer constant from within a 32-bit ACPI table (Revision < 2). The 11462integer 11463is truncated to 32 bits. 11464 11465Fixed a problem with large package objects: if the static length of the 11466package is greater than 255, the "variable length package" opcode is 11467emitted. Previously, this caused an error. This requires an update to the 11468ACPI spec, since it currently (incorrectly) states that packages larger 11469than 11470255 elements are not allowed. 11471 11472The disassembler now correctly handles variable length packages and 11473packages 11474larger than 255 elements. 11475 11476---------------------------------------- 1147708 April 2005. Summary of changes for version 20050408: 11478 114791) ACPI CA Core Subsystem: 11480 11481Fixed three cases in the interpreter where an "index" argument to an ASL 11482function was still (internally) 32 bits instead of the required 64 bits. 11483This was the Index argument to the Index, Mid, and Match operators. 11484 11485The "strupr" function is now permanently local (AcpiUtStrupr), since this 11486is 11487not a POSIX-defined function and not present in most kernel-level C 11488libraries. All references to the C library strupr function have been 11489removed 11490from the headers. 11491 11492Completed the deployment of static functions/prototypes. All prototypes 11493with 11494the static attribute have been moved from the headers to the owning C 11495file. 11496 11497Implemented an extract option (-e) for the AcpiBin utility (AML binary 11498utility). This option allows the utility to extract individual ACPI 11499tables 11500from the output of AcpiDmp. It provides the same functionality of the 11501acpixtract.pl perl script without the worry of setting the correct perl 11502options. AcpiBin runs on Windows and has not yet been generated/validated 11503in 11504the Linux/Unix environment (but should be soon). 11505 11506Updated and fixed the table dump option for AcpiBin (-d). This option 11507converts a single ACPI table to a hex/ascii file, similar to the output 11508of 11509AcpiDmp. 11510 11511Code and Data Size: Current and previous core subsystem library sizes are 11512shown below. These are the code and data sizes for the acpica.lib 11513produced 11514by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11515any ACPI driver or OSPM code. The debug version of the code includes the 11516debug output trace mechanism and has a much larger code and data size. 11517Note 11518that these values will vary depending on the efficiency of the compiler 11519and 11520the compiler options used during generation. 11521 11522 Previous Release: 11523 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 11524 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 11525 Current Release: 11526 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 11527 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 11528 11529 115302) iASL Compiler/Disassembler: 11531 11532Disassembler fix: Added a check to ensure that the table length found in 11533the 11534ACPI table header within the input file is not longer than the actual 11535input 11536file size. This indicates some kind of file or table corruption. 11537 11538---------------------------------------- 1153929 March 2005. Summary of changes for version 20050329: 11540 115411) ACPI CA Core Subsystem: 11542 11543An error is now generated if an attempt is made to create a Buffer Field 11544of 11545length zero (A CreateField with a length operand of zero.) 11546 11547The interpreter now issues a warning whenever executable code at the 11548module 11549level is detected during ACPI table load. This will give some idea of the 11550prevalence of this type of code. 11551 11552Implemented support for references to named objects (other than control 11553methods) within package objects. 11554 11555Enhanced package object output for the debug object. Package objects are 11556now 11557completely dumped, showing all elements. 11558 11559Enhanced miscellaneous object output for the debug object. Any object can 11560now be written to the debug object (for example, a device object can be 11561written, and the type of the object will be displayed.) 11562 11563The "static" qualifier has been added to all local functions across both 11564the 11565core subsystem and the iASL compiler. 11566 11567The number of "long" lines (> 80 chars) within the source has been 11568significantly reduced, by about 1/3. 11569 11570Cleaned up all header files to ensure that all CA/iASL functions are 11571prototyped (even static functions) and the formatting is consistent. 11572 11573Two new header files have been added, acopcode.h and acnames.h. 11574 11575Removed several obsolete functions that were no longer used. 11576 11577Code and Data Size: Current and previous core subsystem library sizes are 11578shown below. These are the code and data sizes for the acpica.lib 11579produced 11580by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11581any ACPI driver or OSPM code. The debug version of the code includes the 11582debug output trace mechanism and has a much larger code and data size. 11583Note 11584that these values will vary depending on the efficiency of the compiler 11585and 11586the compiler options used during generation. 11587 11588 Previous Release: 11589 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11590 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 11591 Current Release: 11592 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 11593 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 11594 11595 11596 115972) iASL Compiler/Disassembler: 11598 11599Fixed a problem with the resource descriptor generation/support. For the 11600ResourceSourceIndex and the ResourceSource fields, both must be present, 11601or 11602both must be not present - can't have one without the other. 11603 11604The compiler now returns non-zero from the main procedure if any errors 11605have 11606occurred during the compilation. 11607 11608 11609---------------------------------------- 1161009 March 2005. Summary of changes for version 20050309: 11611 116121) ACPI CA Core Subsystem: 11613 11614The string-to-buffer implicit conversion code has been modified again 11615after 11616a change to the ACPI specification. In order to match the behavior of 11617the 11618other major ACPI implementation, the target buffer is no longer truncated 11619if 11620the source string is smaller than an existing target buffer. This change 11621requires an update to the ACPI spec, and should eliminate the recent 11622AE_AML_BUFFER_LIMIT issues. 11623 11624The "implicit return" support was rewritten to a new algorithm that 11625solves 11626the general case. Rather than attempt to determine when a method is about 11627to 11628exit, the result of every ASL operator is saved momentarily until the 11629very 11630next ASL operator is executed. Therefore, no matter how the method exits, 11631there will always be a saved implicit return value. This feature is only 11632enabled with the AcpiGbl_EnableInterpreterSlack flag, and should 11633eliminate 11634AE_AML_NO_RETURN_VALUE errors when enabled. 11635 11636Implemented implicit conversion support for the predicate (operand) of 11637the 11638If, Else, and While operators. String and Buffer arguments are 11639automatically 11640converted to Integers. 11641 11642Changed the string-to-integer conversion behavior to match the new ACPI 11643errata: "If no integer object exists, a new integer is created. The ASCII 11644string is interpreted as a hexadecimal constant. Each string character is 11645interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 11646with the first character as the most significant digit, and ending with 11647the 11648first non-hexadecimal character or end-of-string." This means that the 11649first 11650non-hex character terminates the conversion and this is the code that was 11651changed. 11652 11653Fixed a problem where the ObjectType operator would fail (fault) when 11654used 11655on an Index of a Package which pointed to a null package element. The 11656operator now properly returns zero (Uninitialized) in this case. 11657 11658Fixed a problem where the While operator used excessive memory by not 11659properly popping the result stack during execution. There was no memory 11660leak 11661after execution, however. (Code provided by Valery Podrezov.) 11662 11663Fixed a problem where references to control methods within Package 11664objects 11665caused the method to be invoked, instead of producing a reference object 11666pointing to the method. 11667 11668Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) 11669to 11670improve performance and reduce code size. (Code provided by Alexey 11671Starikovskiy.) 11672 11673Code and Data Size: Current and previous core subsystem library sizes are 11674shown below. These are the code and data sizes for the acpica.lib 11675produced 11676by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11677any ACPI driver or OSPM code. The debug version of the code includes the 11678debug output trace mechanism and has a much larger code and data size. 11679Note 11680that these values will vary depending on the efficiency of the compiler 11681and 11682the compiler options used during generation. 11683 11684 Previous Release: 11685 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11686 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 11687 Current Release: 11688 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11689 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 11690 11691 116922) iASL Compiler/Disassembler: 11693 11694Fixed a problem with the Return operator with no arguments. Since the AML 11695grammar for the byte encoding requires an operand for the Return opcode, 11696the 11697compiler now emits a Return(Zero) for this case. An ACPI specification 11698update has been written for this case. 11699 11700For tables other than the DSDT, namepath optimization is automatically 11701disabled. This is because SSDTs can be loaded anywhere in the namespace, 11702the 11703compiler has no knowledge of where, and thus cannot optimize namepaths. 11704 11705Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 11706inadvertently omitted from the ACPI specification, and will require an 11707update to the spec. 11708 11709The source file scan for ASCII characters is now optional (-a). This 11710change 11711was made because some vendors place non-ascii characters within comments. 11712However, the scan is simply a brute-force byte compare to ensure all 11713characters in the file are in the range 0x00 to 0x7F. 11714 11715Fixed a problem with the CondRefOf operator where the compiler was 11716inappropriately checking for the existence of the target. Since the point 11717of 11718the operator is to check for the existence of the target at run-time, the 11719compiler no longer checks for the target existence. 11720 11721Fixed a problem where errors generated from the internal AML interpreter 11722during constant folding were not handled properly, causing a fault. 11723 11724Fixed a problem with overly aggressive range checking for the Stall 11725operator. The valid range (max 255) is now only checked if the operand is 11726of 11727type Integer. All other operand types cannot be statically checked. 11728 11729Fixed a problem where control method references within the RefOf, 11730DeRefOf, 11731and ObjectType operators were not treated properly. They are now treated 11732as 11733actual references, not method invocations. 11734 11735Fixed and enhanced the "list namespace" option (-ln). This option was 11736broken 11737a number of releases ago. 11738 11739Improved error handling for the Field, IndexField, and BankField 11740operators. 11741The compiler now cleanly reports and recovers from errors in the field 11742component (FieldUnit) list. 11743 11744Fixed a disassembler problem where the optional ResourceDescriptor fields 11745TRS and TTP were not always handled correctly. 11746 11747Disassembler - Comments in output now use "//" instead of "/*" 11748 11749---------------------------------------- 1175028 February 2005. Summary of changes for version 20050228: 11751 117521) ACPI CA Core Subsystem: 11753 11754Fixed a problem where the result of an Index() operator (an object 11755reference) must increment the reference count on the target object for 11756the 11757life of the object reference. 11758 11759Implemented AML Interpreter and Debugger support for the new ACPI 3.0 11760Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and 11761WordSpace 11762resource descriptors. 11763 11764Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 11765Space Descriptor" string, indicating interpreter support for the 11766descriptors 11767above. 11768 11769Implemented header support for the new ACPI 3.0 FADT flag bits. 11770 11771Implemented header support for the new ACPI 3.0 PCI Express bits for the 11772PM1 11773status/enable registers. 11774 11775Updated header support for the MADT processor local Apic struct and MADT 11776platform interrupt source struct for new ACPI 3.0 fields. 11777 11778Implemented header support for the SRAT and SLIT ACPI tables. 11779 11780Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" 11781flag 11782at runtime. 11783 11784Code and Data Size: Current and previous core subsystem library sizes are 11785shown below. These are the code and data sizes for the acpica.lib 11786produced 11787by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11788any ACPI driver or OSPM code. The debug version of the code includes the 11789debug output trace mechanism and has a much larger code and data size. 11790Note 11791that these values will vary depending on the efficiency of the compiler 11792and 11793the compiler options used during generation. 11794 11795 Previous Release: 11796 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 11797 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 11798 Current Release: 11799 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11800 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 11801 11802 118032) iASL Compiler/Disassembler: 11804 11805Fixed a problem with the internal 64-bit String-to-integer conversion 11806with 11807strings less than two characters long. 11808 11809Fixed a problem with constant folding where the result of the Index() 11810operator can not be considered a constant. This means that Index() cannot 11811be 11812a type3 opcode and this will require an update to the ACPI specification. 11813 11814Disassembler: Implemented support for the TTP, MTP, and TRS resource 11815descriptor fields. These fields were inadvertently ignored and not output 11816in 11817the disassembly of the resource descriptor. 11818 11819 11820 ---------------------------------------- 1182111 February 2005. Summary of changes for version 20050211: 11822 118231) ACPI CA Core Subsystem: 11824 11825Implemented ACPI 3.0 support for implicit conversion within the Match() 11826operator. MatchObjects can now be of type integer, buffer, or string 11827instead 11828of just type integer. Package elements are implicitly converted to the 11829type 11830of the MatchObject. This change aligns the behavior of Match() with the 11831behavior of the other logical operators (LLess(), etc.) It also requires 11832an 11833errata change to the ACPI specification as this support was intended for 11834ACPI 3.0, but was inadvertently omitted. 11835 11836Fixed a problem with the internal implicit "to buffer" conversion. 11837Strings 11838that are converted to buffers will cause buffer truncation if the string 11839is 11840smaller than the target buffer. Integers that are converted to buffers 11841will 11842not cause buffer truncation, only zero extension (both as per the ACPI 11843spec.) The problem was introduced when code was added to truncate the 11844buffer, but this should not be performed in all cases, only the string 11845case. 11846 11847Fixed a problem with the Buffer and Package operators where the 11848interpreter 11849would get confused if two such operators were used as operands to an ASL 11850operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 11851stack was not being popped after the execution of these operators, 11852resulting 11853in an AE_NO_RETURN_VALUE exception. 11854 11855Fixed a problem with constructs of the form Store(Index(...),...). The 11856reference object returned from Index was inadvertently resolved to an 11857actual 11858value. This problem was introduced in version 20050114 when the behavior 11859of 11860Store() was modified to restrict the object types that can be used as the 11861source operand (to match the ACPI specification.) 11862 11863Reduced excessive stack use within the AcpiGetObjectInfo procedure. 11864 11865Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 11866 11867Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 11868 11869Code and Data Size: Current and previous core subsystem library sizes are 11870shown below. These are the code and data sizes for the acpica.lib 11871produced 11872by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11873any ACPI driver or OSPM code. The debug version of the code includes the 11874debug output trace mechanism and has a much larger code and data size. 11875Note 11876that these values will vary depending on the efficiency of the compiler 11877and 11878the compiler options used during generation. 11879 11880 Previous Release: 11881 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 11882 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 11883 Current Release: 11884 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 11885 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 11886 11887 118882) iASL Compiler/Disassembler: 11889 11890Fixed a code generation problem in the constant folding optimization code 11891where incorrect code was generated if a constant was reduced to a buffer 11892object (i.e., a reduced type 5 opcode.) 11893 11894Fixed a typechecking problem for the ToBuffer operator. Caused by an 11895incorrect return type in the internal opcode information table. 11896 11897---------------------------------------- 1189825 January 2005. Summary of changes for version 20050125: 11899 119001) ACPI CA Core Subsystem: 11901 11902Fixed a recently introduced problem with the Global Lock where the 11903underlying semaphore was not created. This problem was introduced in 11904version 20050114, and caused an AE_AML_NO_OPERAND exception during an 11905Acquire() operation on _GL. 11906 11907The local object cache is now optional, and is disabled by default. Both 11908AcpiExec and the iASL compiler enable the cache because they run in user 11909mode and this enhances their performance. #define 11910ACPI_ENABLE_OBJECT_CACHE 11911to enable the local cache. 11912 11913Fixed an issue in the internal function AcpiUtEvaluateObject concerning 11914the 11915optional "implicit return" support where an error was returned if no 11916return 11917object was expected, but one was implicitly returned. AE_OK is now 11918returned 11919in this case and the implicitly returned object is deleted. 11920AcpiUtEvaluateObject is only occasionally used, and only to execute 11921reserved 11922methods such as _STA and _INI where the return type is known up front. 11923 11924Fixed a few issues with the internal convert-to-integer code. It now 11925returns 11926an error if an attempt is made to convert a null string, a string of only 11927blanks/tabs, or a zero-length buffer. This affects both implicit 11928conversion 11929and explicit conversion via the ToInteger() operator. 11930 11931The internal debug code in AcpiUtAcquireMutex has been commented out. It 11932is 11933not needed for normal operation and should increase the performance of 11934the 11935entire subsystem. The code remains in case it is needed for debug 11936purposes 11937again. 11938 11939The AcpiExec source and makefile are included in the Unix/Linux package 11940for 11941the first time. 11942 11943Code and Data Size: Current and previous core subsystem library sizes are 11944shown below. These are the code and data sizes for the acpica.lib 11945produced 11946by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11947any ACPI driver or OSPM code. The debug version of the code includes the 11948debug output trace mechanism and has a much larger code and data size. 11949Note 11950that these values will vary depending on the efficiency of the compiler 11951and 11952the compiler options used during generation. 11953 11954 Previous Release: 11955 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 11956 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 11957 Current Release: 11958 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 11959 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 11960 119612) iASL Compiler/Disassembler: 11962 11963Switch/Case support: A warning is now issued if the type of the Switch 11964value 11965cannot be determined at compile time. For example, Switch(Arg0) will 11966generate the warning, and the type is assumed to be an integer. As per 11967the 11968ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate 11969the 11970warning. 11971 11972Switch/Case support: Implemented support for buffer and string objects as 11973the switch value. This is an ACPI 3.0 feature, now that LEqual supports 11974buffers and strings. 11975 11976Switch/Case support: The emitted code for the LEqual() comparisons now 11977uses 11978the switch value as the first operand, not the second. The case value is 11979now 11980the second operand, and this allows the case value to be implicitly 11981converted to the type of the switch value, not the other way around. 11982 11983Switch/Case support: Temporary variables are now emitted immediately 11984within 11985the control method, not at the global level. This means that there are 11986now 1198736 temps available per-method, not 36 temps per-module as was the case 11988with 11989the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 11990 11991---------------------------------------- 1199214 January 2005. Summary of changes for version 20050114: 11993 11994Added 2005 copyright to all module headers. This affects every module in 11995the core subsystem, iASL compiler, and the utilities. 11996 119971) ACPI CA Core Subsystem: 11998 11999Fixed an issue with the String-to-Buffer conversion code where the string 12000null terminator was not included in the buffer after conversion, but 12001there 12002is existing ASL that assumes the string null terminator is included. This 12003is 12004the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 12005introduced in the previous version when the code was updated to correctly 12006set the converted buffer size as per the ACPI specification. The ACPI 12007spec 12008is ambiguous and will be updated to specify that the null terminator must 12009be 12010included in the converted buffer. This also affects the ToBuffer() ASL 12011operator. 12012 12013Fixed a problem with the Mid() ASL/AML operator where it did not work 12014correctly on Buffer objects. Newly created sub-buffers were not being 12015marked 12016as initialized. 12017 12018 12019Fixed a problem in AcpiTbFindTable where incorrect string compares were 12020performed on the OemId and OemTableId table header fields. These fields 12021are 12022not null terminated, so strncmp is now used instead of strcmp. 12023 12024Implemented a restriction on the Store() ASL/AML operator to align the 12025behavior with the ACPI specification. Previously, any object could be 12026used 12027as the source operand. Now, the only objects that may be used are 12028Integers, 12029Buffers, Strings, Packages, Object References, and DDB Handles. If 12030necessary, the original behavior can be restored by enabling the 12031EnableInterpreterSlack flag. 12032 12033Enhanced the optional "implicit return" support to allow an implicit 12034return 12035value from methods that are invoked externally via the AcpiEvaluateObject 12036interface. This enables implicit returns from the _STA and _INI methods, 12037for example. 12038 12039Changed the Revision() ASL/AML operator to return the current version of 12040the 12041AML interpreter, in the YYYYMMDD format. Previously, it incorrectly 12042returned 12043the supported ACPI version (This is the function of the _REV method). 12044 12045Updated the _REV predefined method to return the currently supported 12046version 12047of ACPI, now 3. 12048 12049Implemented batch mode option for the AcpiExec utility (-b). 12050 12051Code and Data Size: Current and previous core subsystem library sizes are 12052shown below. These are the code and data sizes for the acpica.lib 12053produced 12054by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12055any ACPI driver or OSPM code. The debug version of the code includes the 12056debug output trace mechanism and has a much larger code and data size. 12057Note 12058that these values will vary depending on the efficiency of the compiler 12059and 12060the compiler options used during generation. 12061 12062 Previous Release: 12063 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 12064 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 12065 Current Release: 12066 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 12067 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 12068 12069---------------------------------------- 1207010 December 2004. Summary of changes for version 20041210: 12071 12072ACPI 3.0 support is nearing completion in both the iASL compiler and the 12073ACPI CA core subsystem. 12074 120751) ACPI CA Core Subsystem: 12076 12077Fixed a problem in the ToDecimalString operator where the resulting 12078string 12079length was incorrectly calculated. The length is now calculated exactly, 12080eliminating incorrect AE_STRING_LIMIT exceptions. 12081 12082Fixed a problem in the ToHexString operator to allow a maximum 200 12083character 12084string to be produced. 12085 12086Fixed a problem in the internal string-to-buffer and buffer-to-buffer 12087copy 12088routine where the length of the resulting buffer was not truncated to the 12089new size (if the target buffer already existed). 12090 12091Code and Data Size: Current and previous core subsystem library sizes are 12092shown below. These are the code and data sizes for the acpica.lib 12093produced 12094by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12095any ACPI driver or OSPM code. The debug version of the code includes the 12096debug output trace mechanism and has a much larger code and data size. 12097Note 12098that these values will vary depending on the efficiency of the compiler 12099and 12100the compiler options used during generation. 12101 12102 Previous Release: 12103 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 12104 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 12105 Current Release: 12106 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 12107 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 12108 12109 121102) iASL Compiler/Disassembler: 12111 12112Implemented the new ACPI 3.0 resource template macros - DWordSpace, 12113ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 12114Includes support in the disassembler. 12115 12116Implemented support for the new (ACPI 3.0) parameter to the Register 12117macro, 12118AccessSize. 12119 12120Fixed a problem where the _HE resource name for the Interrupt macro was 12121referencing bit 0 instead of bit 1. 12122 12123Implemented check for maximum 255 interrupts in the Interrupt macro. 12124 12125Fixed a problem with the predefined resource descriptor names where 12126incorrect AML code was generated if the offset within the resource buffer 12127was 0 or 1. The optimizer shortened the AML code to a single byte opcode 12128but did not update the surrounding package lengths. 12129 12130Changes to the Dma macro: All channels within the channel list must be 12131in 12132the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 12133optional (default is BusMaster). 12134 12135Implemented check for maximum 7 data bytes for the VendorShort macro. 12136 12137The ReadWrite parameter is now optional for the Memory32 and similar 12138macros. 12139 12140---------------------------------------- 1214103 December 2004. Summary of changes for version 20041203: 12142 121431) ACPI CA Core Subsystem: 12144 12145The low-level field insertion/extraction code (exfldio) has been 12146completely 12147rewritten to eliminate unnecessary complexity, bugs, and boundary 12148conditions. 12149 12150Fixed a problem in the ToInteger, ToBuffer, ToHexString, and 12151ToDecimalString 12152operators where the input operand could be inadvertently deleted if no 12153conversion was necessary (e.g., if the input to ToInteger was an Integer 12154object.) 12155 12156Fixed a problem with the ToDecimalString and ToHexString where an 12157incorrect 12158exception code was returned if the resulting string would be > 200 chars. 12159AE_STRING_LIMIT is now returned. 12160 12161Fixed a problem with the Concatenate operator where AE_OK was always 12162returned, even if the operation failed. 12163 12164Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 12165semaphores to be allocated. 12166 12167Code and Data Size: Current and previous core subsystem library sizes are 12168shown below. These are the code and data sizes for the acpica.lib 12169produced 12170by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12171any ACPI driver or OSPM code. The debug version of the code includes the 12172debug output trace mechanism and has a much larger code and data size. 12173Note 12174that these values will vary depending on the efficiency of the compiler 12175and 12176the compiler options used during generation. 12177 12178 Previous Release: 12179 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 12180 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 12181 Current Release: 12182 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 12183 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 12184 12185 121862) iASL Compiler/Disassembler: 12187 12188Fixed typechecking for the ObjectType and SizeOf operators. Problem was 12189recently introduced in 20041119. 12190 12191Fixed a problem with the ToUUID macro where the upper nybble of each 12192buffer 12193byte was inadvertently set to zero. 12194 12195---------------------------------------- 1219619 November 2004. Summary of changes for version 20041119: 12197 121981) ACPI CA Core Subsystem: 12199 12200Fixed a problem in the internal ConvertToInteger routine where new 12201integers 12202were not truncated to 32 bits for 32-bit ACPI tables. This routine 12203converts 12204buffers and strings to integers. 12205 12206Implemented support to store a value to an Index() on a String object. 12207This 12208is an ACPI 2.0 feature that had not yet been implemented. 12209 12210Implemented new behavior for storing objects to individual package 12211elements 12212(via the Index() operator). The previous behavior was to invoke the 12213implicit 12214conversion rules if an object was already present at the index. The new 12215behavior is to simply delete any existing object and directly store the 12216new 12217object. Although the ACPI specification seems unclear on this subject, 12218other 12219ACPI implementations behave in this manner. (This is the root of the 12220AE_BAD_HEX_CONSTANT issue.) 12221 12222Modified the RSDP memory scan mechanism to support the extended checksum 12223for 12224ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 12225RSDP signature is found with a valid checksum. 12226 12227Code and Data Size: Current and previous core subsystem library sizes are 12228shown below. These are the code and data sizes for the acpica.lib 12229produced 12230by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12231any ACPI driver or OSPM code. The debug version of the code includes the 12232debug output trace mechanism and has a much larger code and data size. 12233Note 12234that these values will vary depending on the efficiency of the compiler 12235and 12236the compiler options used during generation. 12237 12238 Previous Release: 12239 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 12240 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 12241 Current Release: 12242 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 12243 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 12244 12245 122462) iASL Compiler/Disassembler: 12247 12248Fixed a missing semicolon in the aslcompiler.y file. 12249 12250---------------------------------------- 1225105 November 2004. Summary of changes for version 20041105: 12252 122531) ACPI CA Core Subsystem: 12254 12255Implemented support for FADT revision 2. This was an interim table 12256(between 12257ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 12258 12259Implemented optional support to allow uninitialized LocalX and ArgX 12260variables in a control method. The variables are initialized to an 12261Integer 12262object with a value of zero. This support is enabled by setting the 12263AcpiGbl_EnableInterpreterSlack flag to TRUE. 12264 12265Implemented support for Integer objects for the SizeOf operator. Either 122664 12267or 8 is returned, depending on the current integer size (32-bit or 64- 12268bit, 12269depending on the parent table revision). 12270 12271Fixed a problem in the implementation of the SizeOf and ObjectType 12272operators 12273where the operand was resolved to a value too early, causing incorrect 12274return values for some objects. 12275 12276Fixed some possible memory leaks during exceptional conditions. 12277 12278Code and Data Size: Current and previous core subsystem library sizes are 12279shown below. These are the code and data sizes for the acpica.lib 12280produced 12281by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12282any ACPI driver or OSPM code. The debug version of the code includes the 12283debug output trace mechanism and has a much larger code and data size. 12284Note 12285that these values will vary depending on the efficiency of the compiler 12286and 12287the compiler options used during generation. 12288 12289 Previous Release: 12290 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 12291 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 12292 Current Release: 12293 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 12294 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 12295 12296 122972) iASL Compiler/Disassembler: 12298 12299Implemented support for all ACPI 3.0 reserved names and methods. 12300 12301Implemented all ACPI 3.0 grammar elements in the front-end, including 12302support for semicolons. 12303 12304Implemented the ACPI 3.0 Function() and ToUUID() macros 12305 12306Fixed a problem in the disassembler where a Scope() operator would not be 12307emitted properly if the target of the scope was in another table. 12308 12309---------------------------------------- 1231015 October 2004. Summary of changes for version 20041015: 12311 12312Note: ACPI CA is currently undergoing an in-depth and complete formal 12313evaluation to test/verify the following areas. Other suggestions are 12314welcome. This will result in an increase in the frequency of releases and 12315the number of bug fixes in the next few months. 12316 - Functional tests for all ASL/AML operators 12317 - All implicit/explicit type conversions 12318 - Bit fields and operation regions 12319 - 64-bit math support and 32-bit-only "truncated" math support 12320 - Exceptional conditions, both compiler and interpreter 12321 - Dynamic object deletion and memory leaks 12322 - ACPI 3.0 support when implemented 12323 - External interfaces to the ACPI subsystem 12324 12325 123261) ACPI CA Core Subsystem: 12327 12328Fixed two alignment issues on 64-bit platforms - within debug statements 12329in 12330AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the 12331Address 12332field within the non-aligned ACPI generic address structure. 12333 12334Fixed a problem in the Increment and Decrement operators where incorrect 12335operand resolution could result in the inadvertent modification of the 12336original integer when the integer is passed into another method as an 12337argument and the arg is then incremented/decremented. 12338 12339Fixed a problem in the FromBCD operator where the upper 32-bits of a 64- 12340bit 12341BCD number were truncated during conversion. 12342 12343Fixed a problem in the ToDecimal operator where the length of the 12344resulting 12345string could be set incorrectly too long if the input operand was a 12346Buffer 12347object. 12348 12349Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte 12350(0) 12351within a buffer would prematurely terminate a compare between buffer 12352objects. 12353 12354Added a check for string overflow (>200 characters as per the ACPI 12355specification) during the Concatenate operator with two string operands. 12356 12357Code and Data Size: Current and previous core subsystem library sizes are 12358shown below. These are the code and data sizes for the acpica.lib 12359produced 12360by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12361any ACPI driver or OSPM code. The debug version of the code includes the 12362debug output trace mechanism and has a much larger code and data size. 12363Note 12364that these values will vary depending on the efficiency of the compiler 12365and 12366the compiler options used during generation. 12367 12368 Previous Release: 12369 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 12370 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 12371 Current Release: 12372 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 12373 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 12374 12375 12376 123772) iASL Compiler/Disassembler: 12378 12379Allow the use of the ObjectType operator on uninitialized Locals and Args 12380(returns 0 as per the ACPI specification). 12381 12382Fixed a problem where the compiler would fault if there was a syntax 12383error 12384in the FieldName of all of the various CreateXXXField operators. 12385 12386Disallow the use of lower case letters within the EISAID macro, as per 12387the 12388ACPI specification. All EISAID strings must be of the form "UUUNNNN" 12389Where 12390U is an uppercase letter and N is a hex digit. 12391 12392 12393---------------------------------------- 1239406 October 2004. Summary of changes for version 20041006: 12395 123961) ACPI CA Core Subsystem: 12397 12398Implemented support for the ACPI 3.0 Timer operator. This ASL function 12399implements a 64-bit timer with 100 nanosecond granularity. 12400 12401Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 12402implement the ACPI 3.0 Timer operator. This allows the host OS to 12403implement 12404the timer with the best clock available. Also, it keeps the core 12405subsystem 12406out of the clock handling business, since the host OS (usually) performs 12407this function. 12408 12409Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 12410functions use a 64-bit address which is part of the packed ACPI Generic 12411Address Structure. Since the structure is non-aligned, the alignment 12412macros 12413are now used to extract the address to a local variable before use. 12414 12415Fixed a problem where the ToInteger operator assumed all input strings 12416were 12417hexadecimal. The operator now handles both decimal strings and hex 12418strings 12419(prefixed with "0x"). 12420 12421Fixed a problem where the string length in the string object created as a 12422result of the internal ConvertToString procedure could be incorrect. This 12423potentially affected all implicit conversions and also the 12424ToDecimalString 12425and ToHexString operators. 12426 12427Fixed two problems in the ToString operator. If the length parameter was 12428zero, an incorrect string object was created and the value of the input 12429length parameter was inadvertently changed from zero to Ones. 12430 12431Fixed a problem where the optional ResourceSource string in the 12432ExtendedIRQ 12433resource macro was ignored. 12434 12435Simplified the interfaces to the internal division functions, reducing 12436code 12437size and complexity. 12438 12439Code and Data Size: Current and previous core subsystem library sizes are 12440shown below. These are the code and data sizes for the acpica.lib 12441produced 12442by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12443any ACPI driver or OSPM code. The debug version of the code includes the 12444debug output trace mechanism and has a much larger code and data size. 12445Note 12446that these values will vary depending on the efficiency of the compiler 12447and 12448the compiler options used during generation. 12449 12450 Previous Release: 12451 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 12452 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 12453 Current Release: 12454 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 12455 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 12456 12457 124582) iASL Compiler/Disassembler: 12459 12460Implemented support for the ACPI 3.0 Timer operator. 12461 12462Fixed a problem where the Default() operator was inadvertently ignored in 12463a 12464Switch/Case block. This was a problem in the translation of the Switch 12465statement to If...Else pairs. 12466 12467Added support to allow a standalone Return operator, with no parentheses 12468(or 12469operands). 12470 12471Fixed a problem with code generation for the ElseIf operator where the 12472translated Else...If parse tree was improperly constructed leading to the 12473loss of some code. 12474 12475---------------------------------------- 1247622 September 2004. Summary of changes for version 20040922: 12477 124781) ACPI CA Core Subsystem: 12479 12480Fixed a problem with the implementation of the LNot() operator where 12481"Ones" 12482was not returned for the TRUE case. Changed the code to return Ones 12483instead 12484of (!Arg) which was usually 1. This change affects iASL constant folding 12485for 12486this operator also. 12487 12488Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was 12489not 12490initialized properly -- Now zero the entire buffer in this case where the 12491buffer already exists. 12492 12493Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 12494Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 12495related code considerably. This will require changes/updates to all OS 12496interface layers (OSLs.) 12497 12498Implemented a new external interface, AcpiInstallExceptionHandler, to 12499allow 12500a system exception handler to be installed. This handler is invoked upon 12501any 12502run-time exception that occurs during control method execution. 12503 12504Added support for the DSDT in AcpiTbFindTable. This allows the 12505DataTableRegion() operator to access the local copy of the DSDT. 12506 12507Code and Data Size: Current and previous core subsystem library sizes are 12508shown below. These are the code and data sizes for the acpica.lib 12509produced 12510by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12511any ACPI driver or OSPM code. The debug version of the code includes the 12512debug output trace mechanism and has a much larger code and data size. 12513Note 12514that these values will vary depending on the efficiency of the compiler 12515and 12516the compiler options used during generation. 12517 12518 Previous Release: 12519 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 12520 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 12521 Current Release: 12522 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 12523 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 12524 12525 125262) iASL Compiler/Disassembler: 12527 12528Fixed a problem with constant folding and the LNot operator. LNot was 12529returning 1 in the TRUE case, not Ones as per the ACPI specification. 12530This 12531could result in the generation of an incorrect folded/reduced constant. 12532 12533End-Of-File is now allowed within a "//"-style comment. A parse error no 12534longer occurs if such a comment is at the very end of the input ASL 12535source 12536file. 12537 12538Implemented the "-r" option to override the Revision in the table header. 12539The initial use of this option will be to simplify the evaluation of the 12540AML 12541interpreter by allowing a single ASL source module to be compiled for 12542either 1254332-bit or 64-bit integers. 12544 12545 12546---------------------------------------- 1254727 August 2004. Summary of changes for version 20040827: 12548 125491) ACPI CA Core Subsystem: 12550 12551- Implemented support for implicit object conversion in the non-numeric 12552logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, 12553and 12554LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 12555the second operand is implicitly converted on the fly to match the type 12556of 12557the first operand. For example: 12558 12559 LEqual (Source1, Source2) 12560 12561Source1 and Source2 must each evaluate to an integer, a string, or a 12562buffer. 12563The data type of Source1 dictates the required type of Source2. Source2 12564is 12565implicitly converted if necessary to match the type of Source1. 12566 12567- Updated and corrected the behavior of the string conversion support. 12568The 12569rules concerning conversion of buffers to strings (according to the ACPI 12570specification) are as follows: 12571 12572ToDecimalString - explicit byte-wise conversion of buffer to string of 12573decimal values (0-255) separated by commas. ToHexString - explicit byte- 12574wise 12575conversion of buffer to string of hex values (0-FF) separated by commas. 12576ToString - explicit byte-wise conversion of buffer to string. Byte-by- 12577byte 12578copy with no transform except NULL terminated. Any other implicit buffer- 12579to- 12580string conversion - byte-wise conversion of buffer to string of hex 12581values 12582(0-FF) separated by spaces. 12583 12584- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 12585 12586- Fixed a problem in AcpiNsGetPathnameLength where the returned length 12587was 12588one byte too short in the case of a node in the root scope. This could 12589cause a fault during debug output. 12590 12591- Code and Data Size: Current and previous core subsystem library sizes 12592are 12593shown below. These are the code and data sizes for the acpica.lib 12594produced 12595by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12596any ACPI driver or OSPM code. The debug version of the code includes the 12597debug output trace mechanism and has a much larger code and data size. 12598Note 12599that these values will vary depending on the efficiency of the compiler 12600and 12601the compiler options used during generation. 12602 12603 Previous Release: 12604 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 12605 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 12606 Current Release: 12607 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 12608 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 12609 12610 126112) iASL Compiler/Disassembler: 12612 12613- Fixed a Linux generation error. 12614 12615 12616---------------------------------------- 1261716 August 2004. Summary of changes for version 20040816: 12618 126191) ACPI CA Core Subsystem: 12620 12621Designed and implemented support within the AML interpreter for the so- 12622called "implicit return". This support returns the result of the last 12623ASL 12624operation within a control method, in the absence of an explicit Return() 12625operator. A few machines depend on this behavior, even though it is not 12626explicitly supported by the ASL language. It is optional support that 12627can 12628be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 12629 12630Removed support for the PCI_Config address space from the internal low 12631level 12632hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 12633support was not used internally, and would not work correctly anyway 12634because 12635the PCI bus number and segment number were not supported. There are 12636separate interfaces for PCI configuration space access because of the 12637unique 12638interface. 12639 12640Code and Data Size: Current and previous core subsystem library sizes are 12641shown below. These are the code and data sizes for the acpica.lib 12642produced 12643by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12644any ACPI driver or OSPM code. The debug version of the code includes the 12645debug output trace mechanism and has a much larger code and data size. 12646Note 12647that these values will vary depending on the efficiency of the compiler 12648and 12649the compiler options used during generation. 12650 12651 Previous Release: 12652 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 12653 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 12654 Current Release: 12655 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 12656 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 12657 12658 126592) iASL Compiler/Disassembler: 12660 12661Fixed a problem where constants in ASL expressions at the root level (not 12662within a control method) could be inadvertently truncated during code 12663generation. This problem was introduced in the 20040715 release. 12664 12665 12666---------------------------------------- 1266715 July 2004. Summary of changes for version 20040715: 12668 126691) ACPI CA Core Subsystem: 12670 12671Restructured the internal HW GPE interfaces to pass/track the current 12672state 12673of interrupts (enabled/disabled) in order to avoid possible deadlock and 12674increase flexibility of the interfaces. 12675 12676Implemented a "lexicographical compare" for String and Buffer objects 12677within 12678the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual - 12679- 12680as per further clarification to the ACPI specification. Behavior is 12681similar 12682to C library "strcmp". 12683 12684Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 12685external function. In the 32-bit non-debug case, the stack use has been 12686reduced from 168 bytes to 32 bytes. 12687 12688Deployed a new run-time configuration flag, 12689AcpiGbl_EnableInterpreterSlack, 12690whose purpose is to allow the AML interpreter to forgive certain bad AML 12691constructs. Default setting is FALSE. 12692 12693Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field 12694IO 12695support code. If enabled, it allows field access to go beyond the end of 12696a 12697region definition if the field is within the region length rounded up to 12698the 12699next access width boundary (a common coding error.) 12700 12701Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 12702ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, 12703these 12704symbols are lowercased by the latest version of the AcpiSrc tool. 12705 12706The prototypes for the PCI interfaces in acpiosxf.h have been updated to 12707rename "Register" to simply "Reg" to prevent certain compilers from 12708complaining. 12709 12710Code and Data Size: Current and previous core subsystem library sizes are 12711shown below. These are the code and data sizes for the acpica.lib 12712produced 12713by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12714any ACPI driver or OSPM code. The debug version of the code includes the 12715debug output trace mechanism and has a much larger code and data size. 12716Note 12717that these values will vary depending on the efficiency of the compiler 12718and 12719the compiler options used during generation. 12720 12721 Previous Release: 12722 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 12723 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 12724 Current Release: 12725 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 12726 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 12727 12728 127292) iASL Compiler/Disassembler: 12730 12731Implemented full support for Package objects within the Case() operator. 12732Note: The Break() operator is currently not supported within Case blocks 12733(TermLists) as there is some question about backward compatibility with 12734ACPI 127351.0 interpreters. 12736 12737 12738Fixed a problem where complex terms were not supported properly within 12739the 12740Switch() operator. 12741 12742Eliminated extraneous warning for compiler-emitted reserved names of the 12743form "_T_x". (Used in Switch/Case operators.) 12744 12745Eliminated optimization messages for "_T_x" objects and small constants 12746within the DefinitionBlock operator. 12747 12748 12749---------------------------------------- 1275015 June 2004. Summary of changes for version 20040615: 12751 127521) ACPI CA Core Subsystem: 12753 12754Implemented support for Buffer and String objects (as per ACPI 2.0) for 12755the 12756following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 12757LLessEqual. 12758 12759All directory names in the entire source package are lower case, as they 12760were in earlier releases. 12761 12762Implemented "Disassemble" command in the AML debugger that will 12763disassemble 12764a single control method. 12765 12766Code and Data Size: Current and previous core subsystem library sizes are 12767shown below. These are the code and data sizes for the acpica.lib 12768produced 12769by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12770any ACPI driver or OSPM code. The debug version of the code includes the 12771debug output trace mechanism and has a much larger code and data size. 12772Note 12773that these values will vary depending on the efficiency of the compiler 12774and 12775the compiler options used during generation. 12776 12777 Previous Release: 12778 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 12779 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 12780 12781 Current Release: 12782 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 12783 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 12784 12785 127862) iASL Compiler/Disassembler: 12787 12788Implemented support for Buffer and String objects (as per ACPI 2.0) for 12789the 12790following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 12791LLessEqual. 12792 12793All directory names in the entire source package are lower case, as they 12794were in earlier releases. 12795 12796Fixed a fault when using the -g or -d<nofilename> options if the FADT was 12797not found. 12798 12799Fixed an issue with the Windows version of the compiler where later 12800versions 12801of Windows place the FADT in the registry under the name "FADT" and not 12802"FACP" as earlier versions did. This applies when using the -g or - 12803d<nofilename> options. The compiler now looks for both strings as 12804necessary. 12805 12806Fixed a problem with compiler namepath optimization where a namepath 12807within 12808the Scope() operator could not be optimized if the namepath was a subpath 12809of 12810the current scope path. 12811 12812---------------------------------------- 1281327 May 2004. Summary of changes for version 20040527: 12814 128151) ACPI CA Core Subsystem: 12816 12817Completed a new design and implementation for EBDA (Extended BIOS Data 12818Area) 12819support in the RSDP scan code. The original code improperly scanned for 12820the 12821EBDA by simply scanning from memory location 0 to 0x400. The correct 12822method 12823is to first obtain the EBDA pointer from within the BIOS data area, then 12824scan 1K of memory starting at the EBDA pointer. There appear to be few 12825if 12826any machines that place the RSDP in the EBDA, however. 12827 12828Integrated a fix for a possible fault during evaluation of BufferField 12829arguments. Obsolete code that was causing the problem was removed. 12830 12831Found and fixed a problem in the Field Support Code where data could be 12832corrupted on a bit field read that starts on an aligned boundary but does 12833not end on an aligned boundary. Merged the read/write "datum length" 12834calculation code into a common procedure. 12835 12836Rolled in a couple of changes to the FreeBSD-specific header. 12837 12838 12839Code and Data Size: Current and previous core subsystem library sizes are 12840shown below. These are the code and data sizes for the acpica.lib 12841produced 12842by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12843any ACPI driver or OSPM code. The debug version of the code includes the 12844debug output trace mechanism and has a much larger code and data size. 12845Note 12846that these values will vary depending on the efficiency of the compiler 12847and 12848the compiler options used during generation. 12849 12850 Previous Release: 12851 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 12852 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 12853 Current Release: 12854 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 12855 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 12856 12857 128582) iASL Compiler/Disassembler: 12859 12860Fixed a generation warning produced by some overly-verbose compilers for 12861a 1286264-bit constant. 12863 12864---------------------------------------- 1286514 May 2004. Summary of changes for version 20040514: 12866 128671) ACPI CA Core Subsystem: 12868 12869Fixed a problem where hardware GPE enable bits sometimes not set properly 12870during and after GPE method execution. Result of 04/27 changes. 12871 12872Removed extra "clear all GPEs" when sleeping/waking. 12873 12874Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 12875AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above 12876to 12877the new AcpiEv* calls as appropriate. 12878 12879ACPI_OS_NAME was removed from the OS-specific headers. The default name 12880is 12881now "Microsoft Windows NT" for maximum compatibility. However this can 12882be 12883changed by modifying the acconfig.h file. 12884 12885Allow a single invocation of AcpiInstallNotifyHandler for a handler that 12886traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 12887 12888Run _INI methods on ThermalZone objects. This is against the ACPI 12889specification, but there is apparently ASL code in the field that has 12890these 12891_INI methods, and apparently "other" AML interpreters execute them. 12892 12893Performed a full 16/32/64 bit lint that resulted in some small changes. 12894 12895Added a sleep simulation command to the AML debugger to test sleep code. 12896 12897Code and Data Size: Current and previous core subsystem library sizes are 12898shown below. These are the code and data sizes for the acpica.lib 12899produced 12900by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12901any ACPI driver or OSPM code. The debug version of the code includes the 12902debug output trace mechanism and has a much larger code and data size. 12903Note 12904that these values will vary depending on the efficiency of the compiler 12905and 12906the compiler options used during generation. 12907 12908 Previous Release: 12909 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 12910 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 12911 Current Release: 12912 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 12913 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 12914 12915---------------------------------------- 1291627 April 2004. Summary of changes for version 20040427: 12917 129181) ACPI CA Core Subsystem: 12919 12920Completed a major overhaul of the GPE handling within ACPI CA. There are 12921now three types of GPEs: wake-only, runtime-only, and combination 12922wake/run. 12923The only GPEs allowed to be combination wake/run are for button-style 12924devices such as a control-method power button, control-method sleep 12925button, 12926or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are 12927not 12928referenced by any _PRW methods are marked for "runtime" and hardware 12929enabled. Any GPE that is referenced by a _PRW method is marked for 12930"wake" 12931(and disabled at runtime). However, at sleep time, only those GPEs that 12932have been specifically enabled for wake via the AcpiEnableGpe interface 12933will 12934actually be hardware enabled. 12935 12936A new external interface has been added, AcpiSetGpeType(), that is meant 12937to 12938be used by device drivers to force a GPE to a particular type. It will 12939be 12940especially useful for the drivers for the button devices mentioned above. 12941 12942Completed restructuring of the ACPI CA initialization sequence so that 12943default operation region handlers are installed before GPEs are 12944initialized 12945and the _PRW methods are executed. This will prevent errors when the 12946_PRW 12947methods attempt to access system memory or I/O space. 12948 12949GPE enable/disable no longer reads the GPE enable register. We now keep 12950the 12951enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 12952thus no longer depend on the hardware to maintain these bits. 12953 12954Always clear the wake status and fixed/GPE status bits before sleep, even 12955for state S5. 12956 12957Improved the AML debugger output for displaying the GPE blocks and their 12958current status. 12959 12960Added new strings for the _OSI method, of the form "Windows 2001 SPx" 12961where 12962x = 0,1,2,3,4. 12963 12964Fixed a problem where the physical address was incorrectly calculated 12965when 12966the Load() operator was used to directly load from an Operation Region 12967(vs. 12968loading from a Field object.) Also added check for minimum table length 12969for 12970this case. 12971 12972Fix for multiple mutex acquisition. Restore original thread SyncLevel on 12973mutex release. 12974 12975Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 12976consistency with the other fields returned. 12977 12978Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 12979structure for each GPE in the system, so the size of this structure is 12980important. 12981 12982CPU stack requirement reduction: Cleaned up the method execution and 12983object 12984evaluation paths so that now a parameter structure is passed, instead of 12985copying the various method parameters over and over again. 12986 12987In evregion.c: Correctly exit and reenter the interpreter region if and 12988only if dispatching an operation region request to a user-installed 12989handler. 12990Do not exit/reenter when dispatching to a default handler (e.g., default 12991system memory or I/O handlers) 12992 12993 12994Notes for updating drivers for the new GPE support. The following 12995changes 12996must be made to ACPI-related device drivers that are attached to one or 12997more 12998GPEs: (This information will be added to the ACPI CA Programmer 12999Reference.) 13000 130011) AcpiInstallGpeHandler no longer automatically enables the GPE, you 13002must 13003explicitly call AcpiEnableGpe. 130042) There is a new interface called AcpiSetGpeType. This should be called 13005before enabling the GPE. Also, this interface will automatically disable 13006the GPE if it is currently enabled. 130073) AcpiEnableGpe no longer supports a GPE type flag. 13008 13009Specific drivers that must be changed: 130101) EC driver: 13011 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 13012AeGpeHandler, NULL); 13013 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 13014 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 13015 130162) Button Drivers (Power, Lid, Sleep): 13017Run _PRW method under parent device 13018If _PRW exists: /* This is a control-method button */ 13019 Extract GPE number and possibly GpeDevice 13020 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 13021 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 13022 13023For all other devices that have _PRWs, we automatically set the GPE type 13024to 13025ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. 13026This 13027must be done on a selective basis, usually requiring some kind of user 13028app 13029to allow the user to pick the wake devices. 13030 13031 13032Code and Data Size: Current and previous core subsystem library sizes are 13033shown below. These are the code and data sizes for the acpica.lib 13034produced 13035by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13036any ACPI driver or OSPM code. The debug version of the code includes the 13037debug output trace mechanism and has a much larger code and data size. 13038Note 13039that these values will vary depending on the efficiency of the compiler 13040and 13041the compiler options used during generation. 13042 13043 Previous Release: 13044 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 13045 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 13046 Current Release: 13047 13048 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 13049 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 13050 13051 13052 13053---------------------------------------- 1305402 April 2004. Summary of changes for version 20040402: 13055 130561) ACPI CA Core Subsystem: 13057 13058Fixed an interpreter problem where an indirect store through an ArgX 13059parameter was incorrectly applying the "implicit conversion rules" during 13060the store. From the ACPI specification: "If the target is a method local 13061or 13062argument (LocalX or ArgX), no conversion is performed and the result is 13063stored directly to the target". The new behavior is to disable implicit 13064conversion during ALL stores to an ArgX. 13065 13066Changed the behavior of the _PRW method scan to ignore any and all errors 13067returned by a given _PRW. This prevents the scan from aborting from the 13068failure of any single _PRW. 13069 13070Moved the runtime configuration parameters from the global init procedure 13071to 13072static variables in acglobal.h. This will allow the host to override the 13073default values easily. 13074 13075Code and Data Size: Current and previous core subsystem library sizes are 13076shown below. These are the code and data sizes for the acpica.lib 13077produced 13078by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13079any ACPI driver or OSPM code. The debug version of the code includes the 13080debug output trace mechanism and has a much larger code and data size. 13081Note 13082that these values will vary depending on the efficiency of the compiler 13083and 13084the compiler options used during generation. 13085 13086 Previous Release: 13087 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 13088 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 13089 Current Release: 13090 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 13091 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 13092 13093 130942) iASL Compiler/Disassembler: 13095 13096iASL now fully disassembles SSDTs. However, External() statements are 13097not 13098generated automatically for unresolved symbols at this time. This is a 13099planned feature for future implementation. 13100 13101Fixed a scoping problem in the disassembler that occurs when the type of 13102the 13103target of a Scope() operator is overridden. This problem caused an 13104incorrectly nested internal namespace to be constructed. 13105 13106Any warnings or errors that are emitted during disassembly are now 13107commented 13108out automatically so that the resulting file can be recompiled without 13109any 13110hand editing. 13111 13112---------------------------------------- 1311326 March 2004. Summary of changes for version 20040326: 13114 131151) ACPI CA Core Subsystem: 13116 13117Implemented support for "wake" GPEs via interaction between GPEs and the 13118_PRW methods. Every GPE that is pointed to by one or more _PRWs is 13119identified as a WAKE GPE and by default will no longer be enabled at 13120runtime. Previously, we were blindly enabling all GPEs with a 13121corresponding 13122_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. 13123We 13124believe this has been the cause of thousands of "spurious" GPEs on some 13125systems. 13126 13127This new GPE behavior is can be reverted to the original behavior (enable 13128ALL GPEs at runtime) via a runtime flag. 13129 13130Fixed a problem where aliased control methods could not access objects 13131properly. The proper scope within the namespace was not initialized 13132(transferred to the target of the aliased method) before executing the 13133target method. 13134 13135Fixed a potential race condition on internal object deletion on the 13136return 13137object in AcpiEvaluateObject. 13138 13139Integrated a fix for resource descriptors where both _MEM and _MTP were 13140being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 13141wide, 0x0F instead of 0x03.) 13142 13143Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, 13144preventing 13145a 13146fault in some cases. 13147 13148Updated Notify() values for debug statements in evmisc.c 13149 13150Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 13151 13152Code and Data Size: Current and previous core subsystem library sizes are 13153shown below. These are the code and data sizes for the acpica.lib 13154produced 13155by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13156any ACPI driver or OSPM code. The debug version of the code includes the 13157debug output trace mechanism and has a much larger code and data size. 13158Note 13159that these values will vary depending on the efficiency of the compiler 13160and 13161the compiler options used during generation. 13162 13163 Previous Release: 13164 13165 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 13166 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 13167 Current Release: 13168 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 13169 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 13170 13171---------------------------------------- 1317211 March 2004. Summary of changes for version 20040311: 13173 131741) ACPI CA Core Subsystem: 13175 13176Fixed a problem where errors occurring during the parse phase of control 13177method execution did not abort cleanly. For example, objects created and 13178installed in the namespace were not deleted. This caused all subsequent 13179invocations of the method to return the AE_ALREADY_EXISTS exception. 13180 13181Implemented a mechanism to force a control method to "Serialized" 13182execution 13183if the method attempts to create namespace objects. (The root of the 13184AE_ALREADY_EXISTS problem.) 13185 13186Implemented support for the predefined _OSI "internal" control method. 13187Initial supported strings are "Linux", "Windows 2000", "Windows 2001", 13188and 13189"Windows 2001.1", and can be easily upgraded for new strings as 13190necessary. 13191This feature will allow "other" operating systems to execute the fully 13192tested, "Windows" code path through the ASL code 13193 13194Global Lock Support: Now allows multiple acquires and releases with any 13195internal thread. Removed concept of "owning thread" for this special 13196mutex. 13197 13198Fixed two functions that were inappropriately declaring large objects on 13199the 13200CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage 13201during 13202method execution considerably. 13203 13204Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 13205S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 13206 13207Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 13208defined on the machine. 13209 13210Implemented two runtime options: One to force all control method 13211execution 13212to "Serialized" to mimic Windows behavior, another to disable _OSI 13213support 13214if it causes problems on a given machine. 13215 13216Code and Data Size: Current and previous core subsystem library sizes are 13217shown below. These are the code and data sizes for the acpica.lib 13218produced 13219by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13220any ACPI driver or OSPM code. The debug version of the code includes the 13221debug output trace mechanism and has a much larger code and data size. 13222Note 13223that these values will vary depending on the efficiency of the compiler 13224and 13225the compiler options used during generation. 13226 13227 Previous Release: 13228 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 13229 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 13230 Current Release: 13231 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 13232 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 13233 132342) iASL Compiler/Disassembler: 13235 13236Fixed an array size problem for FreeBSD that would cause the compiler to 13237fault. 13238 13239---------------------------------------- 1324020 February 2004. Summary of changes for version 20040220: 13241 13242 132431) ACPI CA Core Subsystem: 13244 13245Implemented execution of _SxD methods for Device objects in the 13246GetObjectInfo interface. 13247 13248Fixed calls to _SST method to pass the correct arguments. 13249 13250Added a call to _SST on wake to restore to "working" state. 13251 13252Check for End-Of-Buffer failure case in the WalkResources interface. 13253 13254Integrated fix for 64-bit alignment issue in acglobal.h by moving two 13255structures to the beginning of the file. 13256 13257After wake, clear GPE status register(s) before enabling GPEs. 13258 13259After wake, clear/enable power button. (Perhaps we should clear/enable 13260all 13261fixed events upon wake.) 13262 13263Fixed a couple of possible memory leaks in the Namespace manager. 13264 13265Integrated latest acnetbsd.h file. 13266 13267---------------------------------------- 1326811 February 2004. Summary of changes for version 20040211: 13269 13270 132711) ACPI CA Core Subsystem: 13272 13273Completed investigation and implementation of the call-by-reference 13274mechanism for control method arguments. 13275 13276Fixed a problem where a store of an object into an indexed package could 13277fail if the store occurs within a different method than the method that 13278created the package. 13279 13280Fixed a problem where the ToDecimal operator could return incorrect 13281results. 13282 13283Fixed a problem where the CopyObject operator could fail on some of the 13284more 13285obscure objects (e.g., Reference objects.) 13286 13287Improved the output of the Debug object to display buffer, package, and 13288index objects. 13289 13290Fixed a problem where constructs of the form "RefOf (ArgX)" did not 13291return 13292the expected result. 13293 13294Added permanent ACPI_REPORT_ERROR macros for all instances of the 13295ACPI_AML_INTERNAL exception. 13296 13297Integrated latest version of acfreebsd.h 13298 13299---------------------------------------- 1330016 January 2004. Summary of changes for version 20040116: 13301 13302The purpose of this release is primarily to update the copyright years in 13303each module, thus causing a huge number of diffs. There are a few small 13304functional changes, however. 13305 133061) ACPI CA Core Subsystem: 13307 13308Improved error messages when there is a problem finding one or more of 13309the 13310required base ACPI tables 13311 13312Reintroduced the definition of APIC_HEADER in actbl.h 13313 13314Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 13315 13316Removed extraneous reference to NewObj in dsmthdat.c 13317 133182) iASL compiler 13319 13320Fixed a problem introduced in December that disabled the correct 13321disassembly 13322of Resource Templates 13323 13324 13325---------------------------------------- 1332603 December 2003. Summary of changes for version 20031203: 13327 133281) ACPI CA Core Subsystem: 13329 13330Changed the initialization of Operation Regions during subsystem 13331init to perform two entire walks of the ACPI namespace; The first 13332to initialize the regions themselves, the second to execute the 13333_REG methods. This fixed some interdependencies across _REG 13334methods found on some machines. 13335 13336Fixed a problem where a Store(Local0, Local1) could simply update 13337the object reference count, and not create a new copy of the 13338object if the Local1 is uninitialized. 13339 13340Implemented support for the _SST reserved method during sleep 13341transitions. 13342 13343Implemented support to clear the SLP_TYP and SLP_EN bits when 13344waking up, this is apparently required by some machines. 13345 13346When sleeping, clear the wake status only if SleepState is not S5. 13347 13348Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 13349pointer arithmetic advanced a string pointer too far. 13350 13351Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 13352could be returned if the requested table has not been loaded. 13353 13354Within the support for IRQ resources, restructured the handling of 13355the active and edge/level bits. 13356 13357Fixed a few problems in AcpiPsxExecute() where memory could be 13358leaked under certain error conditions. 13359 13360Improved error messages for the cases where the ACPI mode could 13361not be entered. 13362 13363Code and Data Size: Current and previous core subsystem library 13364sizes are shown below. These are the code and data sizes for the 13365acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13366these values do not include any ACPI driver or OSPM code. The 13367debug version of the code includes the debug output trace 13368mechanism and has a much larger code and data size. Note that 13369these values will vary depending on the efficiency of the compiler 13370and the compiler options used during generation. 13371 13372 Previous Release (20031029): 13373 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 13374 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 13375 Current Release: 13376 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 13377 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 13378 133792) iASL Compiler/Disassembler: 13380 13381Implemented a fix for the iASL disassembler where a bad index was 13382generated. This was most noticeable on 64-bit platforms 13383 13384 13385---------------------------------------- 1338629 October 2003. Summary of changes for version 20031029: 13387 133881) ACPI CA Core Subsystem: 13389 13390 13391Fixed a problem where a level-triggered GPE with an associated 13392_Lxx control method was incorrectly cleared twice. 13393 13394Fixed a problem with the Field support code where an access can 13395occur beyond the end-of-region if the field is non-aligned but 13396extends to the very end of the parent region (resulted in an 13397AE_AML_REGION_LIMIT exception.) 13398 13399Fixed a problem with ACPI Fixed Events where an RT Clock handler 13400would not get invoked on an RTC event. The RTC event bitmasks for 13401the PM1 registers were not being initialized properly. 13402 13403Implemented support for executing _STA and _INI methods for 13404Processor objects. Although this is currently not part of the 13405ACPI specification, there is existing ASL code that depends on the 13406init-time execution of these methods. 13407 13408Implemented and deployed a GetDescriptorName function to decode 13409the various types of internal descriptors. Guards against null 13410descriptors during debug output also. 13411 13412Implemented and deployed a GetNodeName function to extract the 4- 13413character namespace node name. This function simplifies the debug 13414and error output, as well as guarding against null pointers during 13415output. 13416 13417Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 13418simplify the debug and error output of 64-bit integers. This 13419macro replaces the HIDWORD and LODWORD macros for dumping these 13420integers. 13421 13422Updated the implementation of the Stall() operator to only call 13423AcpiOsStall(), and also return an error if the operand is larger 13424than 255. This preserves the required behavior of not 13425relinquishing the processor, as would happen if AcpiOsSleep() was 13426called for "long stalls". 13427 13428Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 13429initialized are now treated as NOOPs. 13430 13431Cleaned up a handful of warnings during 64-bit generation. 13432 13433Fixed a reported error where and incorrect GPE number was passed 13434to the GPE dispatch handler. This value is only used for error 13435output, however. Used this opportunity to clean up and streamline 13436the GPE dispatch code. 13437 13438Code and Data Size: Current and previous core subsystem library 13439sizes are shown below. These are the code and data sizes for the 13440acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13441these values do not include any ACPI driver or OSPM code. The 13442 13443debug version of the code includes the debug output trace 13444mechanism and has a much larger code and data size. Note that 13445these values will vary depending on the efficiency of the compiler 13446and the compiler options used during generation. 13447 13448 Previous Release (20031002): 13449 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 13450 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 13451 Current Release: 13452 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 13453 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 13454 13455 134562) iASL Compiler/Disassembler: 13457 13458Updated the iASL compiler to return an error if the operand to the 13459Stall() operator is larger than 255. 13460 13461 13462---------------------------------------- 1346302 October 2003. Summary of changes for version 20031002: 13464 13465 134661) ACPI CA Core Subsystem: 13467 13468Fixed a problem with Index Fields where the index was not 13469incremented for fields that require multiple writes to the 13470index/data registers (Fields that are wider than the data 13471register.) 13472 13473Fixed a problem with all Field objects where a write could go 13474beyond the end-of-field if the field was larger than the access 13475granularity and therefore required multiple writes to complete the 13476request. An extra write beyond the end of the field could happen 13477inadvertently. 13478 13479Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 13480would incorrectly be returned if the width of the Data Register 13481was larger than the specified field access width. 13482 13483Completed fixes for LoadTable() and Unload() and verified their 13484operation. Implemented full support for the "DdbHandle" object 13485throughout the ACPI CA subsystem. 13486 13487Implemented full support for the MADT and ECDT tables in the ACPI 13488CA header files. Even though these tables are not directly 13489consumed by ACPI CA, the header definitions are useful for ACPI 13490device drivers. 13491 13492Integrated resource descriptor fixes posted to the Linux ACPI 13493list. This included checks for minimum descriptor length, and 13494support for trailing NULL strings within descriptors that have 13495optional string elements. 13496 13497Code and Data Size: Current and previous core subsystem library 13498sizes are shown below. These are the code and data sizes for the 13499acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13500these values do not include any ACPI driver or OSPM code. The 13501debug version of the code includes the debug output trace 13502mechanism and has a much larger code and data size. Note that 13503these values will vary depending on the efficiency of the compiler 13504and the compiler options used during generation. 13505 13506 Previous Release (20030918): 13507 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 13508 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 13509 Current Release: 13510 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 13511 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 13512 13513 135142) iASL Compiler: 13515 13516Implemented detection of non-ASCII characters within the input 13517source ASL file. This catches attempts to compile binary (AML) 13518files early in the compile, with an informative error message. 13519 13520Fixed a problem where the disassembler would fault if the output 13521filename could not be generated or if the output file could not be 13522opened. 13523 13524---------------------------------------- 1352518 September 2003. Summary of changes for version 20030918: 13526 13527 135281) ACPI CA Core Subsystem: 13529 13530Found and fixed a longstanding problem with the late execution of 13531the various deferred AML opcodes (such as Operation Regions, 13532Buffer Fields, Buffers, and Packages). If the name string 13533specified for the name of the new object placed the object in a 13534scope other than the current scope, the initialization/execution 13535of the opcode failed. The solution to this problem was to 13536implement a mechanism where the late execution of such opcodes 13537does not attempt to lookup/create the name a second time in an 13538incorrect scope. This fixes the "region size computed 13539incorrectly" problem. 13540 13541Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 13542Global Lock AE_BAD_PARAMETER error. 13543 13544Fixed several 64-bit issues with prototypes, casting and data 13545types. 13546 13547Removed duplicate prototype from acdisasm.h 13548 13549Fixed an issue involving EC Operation Region Detach (Shaohua Li) 13550 13551Code and Data Size: Current and previous core subsystem library 13552sizes are shown below. These are the code and data sizes for the 13553acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13554these values do not include any ACPI driver or OSPM code. The 13555debug version of the code includes the debug output trace 13556mechanism and has a much larger code and data size. Note that 13557these values will vary depending on the efficiency of the compiler 13558and the compiler options used during generation. 13559 13560 Previous Release: 13561 13562 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 13563 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 13564 Current Release: 13565 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 13566 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 13567 13568 135692) Linux: 13570 13571Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 13572correct sleep time in seconds. 13573 13574---------------------------------------- 1357514 July 2003. Summary of changes for version 20030619: 13576 135771) ACPI CA Core Subsystem: 13578 13579Parse SSDTs in order discovered, as opposed to reverse order 13580(Hrvoje Habjanic) 13581 13582Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 13583Klausner, 13584 Nate Lawson) 13585 13586 135872) Linux: 13588 13589Dynamically allocate SDT list (suggested by Andi Kleen) 13590 13591proc function return value cleanups (Andi Kleen) 13592 13593Correctly handle NMI watchdog during long stalls (Andrew Morton) 13594 13595Make it so acpismp=force works (reported by Andrew Morton) 13596 13597 13598---------------------------------------- 1359919 June 2003. Summary of changes for version 20030619: 13600 136011) ACPI CA Core Subsystem: 13602 13603Fix To/FromBCD, eliminating the need for an arch-specific #define. 13604 13605Do not acquire a semaphore in the S5 shutdown path. 13606 13607Fix ex_digits_needed for 0. (Takayoshi Kochi) 13608 13609Fix sleep/stall code reversal. (Andi Kleen) 13610 13611Revert a change having to do with control method calling 13612semantics. 13613 136142) Linux: 13615 13616acpiphp update (Takayoshi Kochi) 13617 13618Export acpi_disabled for sonypi (Stelian Pop) 13619 13620Mention acpismp=force in config help 13621 13622Re-add acpitable.c and acpismp=force. This improves backwards 13623 13624compatibility and also cleans up the code to a significant degree. 13625 13626Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 13627 13628---------------------------------------- 1362922 May 2003. Summary of changes for version 20030522: 13630 136311) ACPI CA Core Subsystem: 13632 13633Found and fixed a reported problem where an AE_NOT_FOUND error 13634occurred occasionally during _BST evaluation. This turned out to 13635be an Owner ID allocation issue where a called method did not get 13636a new ID assigned to it. Eventually, (after 64k calls), the Owner 13637ID UINT16 would wraparound so that the ID would be the same as the 13638caller's and the called method would delete the caller's 13639namespace. 13640 13641Implemented extended error reporting for control methods that are 13642aborted due to a run-time exception. Output includes the exact 13643AML instruction that caused the method abort, a dump of the method 13644locals and arguments at the time of the abort, and a trace of all 13645nested control method calls. 13646 13647Modified the interpreter to allow the creation of buffers of zero 13648length from the AML code. Implemented new code to ensure that no 13649attempt is made to actually allocate a memory buffer (of length 13650zero) - instead, a simple buffer object with a NULL buffer pointer 13651and length zero is created. A warning is no longer issued when 13652the AML attempts to create a zero-length buffer. 13653 13654Implemented a workaround for the "leading asterisk issue" in 13655_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 13656asterisk is automatically removed if present in any HID, UID, or 13657CID strings. The iASL compiler will still flag this asterisk as 13658an error, however. 13659 13660Implemented full support for _CID methods that return a package of 13661multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 13662now additionally returns a device _CID list if present. This 13663required a change to the external interface in order to pass an 13664ACPI_BUFFER object as a parameter since the _CID list is of 13665variable length. 13666 13667Fixed a problem with the new AE_SAME_HANDLER exception where 13668handler initialization code did not know about this exception. 13669 13670Code and Data Size: Current and previous core subsystem library 13671sizes are shown below. These are the code and data sizes for the 13672acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13673these values do not include any ACPI driver or OSPM code. The 13674debug version of the code includes the debug output trace 13675mechanism and has a much larger code and data size. Note that 13676these values will vary depending on the efficiency of the compiler 13677and the compiler options used during generation. 13678 13679 Previous Release (20030509): 13680 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 13681 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 13682 Current Release: 13683 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 13684 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 13685 13686 136872) Linux: 13688 13689Fixed a bug in which we would reinitialize the ACPI interrupt 13690after it was already working, thus disabling all ACPI and the IRQs 13691for any other device sharing the interrupt. (Thanks to Stian 13692Jordet) 13693 13694Toshiba driver update (John Belmonte) 13695 13696Return only 0 or 1 for our interrupt handler status (Andrew 13697Morton) 13698 13699 137003) iASL Compiler: 13701 13702Fixed a reported problem where multiple (nested) ElseIf() 13703statements were not handled correctly by the compiler, resulting 13704in incorrect warnings and incorrect AML code. This was a problem 13705in both the ASL parser and the code generator. 13706 13707 137084) Documentation: 13709 13710Added changes to existing interfaces, new exception codes, and new 13711text concerning reference count object management versus garbage 13712collection. 13713 13714---------------------------------------- 1371509 May 2003. Summary of changes for version 20030509. 13716 13717 137181) ACPI CA Core Subsystem: 13719 13720Changed the subsystem initialization sequence to hold off 13721installation of address space handlers until the hardware has been 13722initialized and the system has entered ACPI mode. This is because 13723the installation of space handlers can cause _REG methods to be 13724run. Previously, the _REG methods could potentially be run before 13725ACPI mode was enabled. 13726 13727Fixed some memory leak issues related to address space handler and 13728notify handler installation. There were some problems with the 13729reference count mechanism caused by the fact that the handler 13730objects are shared across several namespace objects. 13731 13732Fixed a reported problem where reference counts within the 13733namespace were not properly updated when named objects created by 13734method execution were deleted. 13735 13736Fixed a reported problem where multiple SSDTs caused a deletion 13737issue during subsystem termination. Restructured the table data 13738structures to simplify the linked lists and the related code. 13739 13740Fixed a problem where the table ID associated with secondary 13741tables (SSDTs) was not being propagated into the namespace objects 13742created by those tables. This would only present a problem for 13743tables that are unloaded at run-time, however. 13744 13745Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 13746type as the length parameter (instead of UINT32). 13747 13748Solved a long-standing problem where an ALREADY_EXISTS error 13749appears on various systems. This problem could happen when there 13750are multiple PCI_Config operation regions under a single PCI root 13751bus. This doesn't happen very frequently, but there are some 13752systems that do this in the ASL. 13753 13754Fixed a reported problem where the internal DeleteNode function 13755was incorrectly handling the case where a namespace node was the 13756first in the parent's child list, and had additional peers (not 13757the only child, but first in the list of children.) 13758 13759Code and Data Size: Current core subsystem library sizes are shown 13760below. These are the code and data sizes for the acpica.lib 13761produced by the Microsoft Visual C++ 6.0 compiler, and these 13762values do not include any ACPI driver or OSPM code. The debug 13763version of the code includes the debug output trace mechanism and 13764has a much larger code and data size. Note that these values will 13765vary depending on the efficiency of the compiler and the compiler 13766options used during generation. 13767 13768 Previous Release 13769 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 13770 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 13771 Current Release: 13772 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 13773 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 13774 13775 137762) Linux: 13777 13778Allow ":" in OS override string (Ducrot Bruno) 13779 13780Kobject fix (Greg KH) 13781 13782 137833 iASL Compiler/Disassembler: 13784 13785Fixed a problem in the generation of the C source code files (AML 13786is emitted in C source statements for BIOS inclusion) where the 13787Ascii dump that appears within a C comment at the end of each line 13788could cause a compile time error if the AML sequence happens to 13789have an open comment or close comment sequence embedded. 13790 13791 13792---------------------------------------- 1379324 April 2003. Summary of changes for version 20030424. 13794 13795 137961) ACPI CA Core Subsystem: 13797 13798Support for big-endian systems has been implemented. Most of the 13799support has been invisibly added behind big-endian versions of the 13800ACPI_MOVE_* macros. 13801 13802Fixed a problem in AcpiHwDisableGpeBlock() and 13803AcpiHwClearGpeBlock() where an incorrect offset was passed to the 13804low level hardware write routine. The offset parameter was 13805actually eliminated from the low level read/write routines because 13806they had become obsolete. 13807 13808Fixed a problem where a handler object was deleted twice during 13809the removal of a fixed event handler. 13810 13811 138122) Linux: 13813 13814A fix for SMP systems with link devices was contributed by 13815 13816Compaq's Dan Zink. 13817 13818(2.5) Return whether we handled the interrupt in our IRQ handler. 13819(Linux ISRs no longer return void, so we can propagate the handler 13820return value from the ACPI CA core back to the OS.) 13821 13822 13823 138243) Documentation: 13825 13826The ACPI CA Programmer Reference has been updated to reflect new 13827interfaces and changes to existing interfaces. 13828 13829---------------------------------------- 1383028 March 2003. Summary of changes for version 20030328. 13831 138321) ACPI CA Core Subsystem: 13833 13834The GPE Block Device support has been completed. New interfaces 13835are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 13836interfaces (enable, disable, clear, getstatus) have been split 13837into separate interfaces for Fixed Events and General Purpose 13838Events (GPEs) in order to support GPE Block Devices properly. 13839 13840Fixed a problem where the error message "Failed to acquire 13841semaphore" would appear during operations on the embedded 13842controller (EC). 13843 13844Code and Data Size: Current core subsystem library sizes are shown 13845below. These are the code and data sizes for the acpica.lib 13846produced by the Microsoft Visual C++ 6.0 compiler, and these 13847values do not include any ACPI driver or OSPM code. The debug 13848version of the code includes the debug output trace mechanism and 13849has a much larger code and data size. Note that these values will 13850vary depending on the efficiency of the compiler and the compiler 13851options used during generation. 13852 13853 Previous Release 13854 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 13855 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 13856 Current Release: 13857 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 13858 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 13859 13860 13861---------------------------------------- 1386228 February 2003. Summary of changes for version 20030228. 13863 13864 138651) ACPI CA Core Subsystem: 13866 13867The GPE handling and dispatch code has been completely overhauled 13868in preparation for support of GPE Block Devices (ID ACPI0006). 13869This affects internal data structures and code only; there should 13870be no differences visible externally. One new file has been 13871added, evgpeblk.c 13872 13873The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 13874fields that are used to determine the GPE block lengths. The 13875REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 13876structures are ignored. This is per the ACPI specification but it 13877isn't very clear. The full 256 Block 0/1 GPEs are now supported 13878(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 13879 13880In the SCI interrupt handler, removed the read of the PM1_CONTROL 13881register to look at the SCI_EN bit. On some machines, this read 13882causes an SMI event and greatly slows down SCI events. (This may 13883in fact be the cause of slow battery status response on some 13884systems.) 13885 13886Fixed a problem where a store of a NULL string to a package object 13887could cause the premature deletion of the object. This was seen 13888during execution of the battery _BIF method on some systems, 13889resulting in no battery data being returned. 13890 13891Added AcpiWalkResources interface to simplify parsing of resource 13892lists. 13893 13894Code and Data Size: Current core subsystem library sizes are shown 13895below. These are the code and data sizes for the acpica.lib 13896produced by the Microsoft Visual C++ 6.0 compiler, and these 13897values do not include any ACPI driver or OSPM code. The debug 13898version of the code includes the debug output trace mechanism and 13899has a much larger code and data size. Note that these values will 13900vary depending on the efficiency of the compiler and the compiler 13901options used during generation. 13902 13903 Previous Release 13904 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 13905 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 13906 Current Release: 13907 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 13908 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 13909 13910 139112) Linux 13912 13913S3 fixes (Ole Rohne) 13914 13915Update ACPI PHP driver with to use new acpi_walk_resource API 13916(Bjorn Helgaas) 13917 13918Add S4BIOS support (Pavel Machek) 13919 13920Map in entire table before performing checksum (John Stultz) 13921 13922Expand the mem= cmdline to allow the specification of reserved and 13923ACPI DATA blocks (Pavel Machek) 13924 13925Never use ACPI on VISWS 13926 13927Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 13928 13929Revert a change that allowed P_BLK lengths to be 4 or 5. This is 13930causing us to think that some systems support C2 when they really 13931don't. 13932 13933Do not count processor objects for non-present CPUs (Thanks to 13934Dominik Brodowski) 13935 13936 139373) iASL Compiler: 13938 13939Fixed a problem where ASL include files could not be found and 13940opened. 13941 13942Added support for the _PDC reserved name. 13943 13944 13945---------------------------------------- 1394622 January 2003. Summary of changes for version 20030122. 13947 13948 139491) ACPI CA Core Subsystem: 13950 13951Added a check for constructs of the form: Store (Local0, Local0) 13952where Local0 is not initialized. Apparently, some BIOS 13953programmers believe that this is a NOOP. Since this store doesn't 13954do anything anyway, the new prototype behavior will ignore this 13955error. This is a case where we can relax the strict checking in 13956the interpreter in the name of compatibility. 13957 13958 139592) Linux 13960 13961The AcpiSrc Source Conversion Utility has been released with the 13962Linux package for the first time. This is the utility that is 13963used to convert the ACPI CA base source code to the Linux version. 13964 13965(Both) Handle P_BLK lengths shorter than 6 more gracefully 13966 13967(Both) Move more headers to include/acpi, and delete an unused 13968header. 13969 13970(Both) Move drivers/acpi/include directory to include/acpi 13971 13972(Both) Boot functions don't use cmdline, so don't pass it around 13973 13974(Both) Remove include of unused header (Adrian Bunk) 13975 13976(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 13977the 13978former now also includes the latter, acpiphp.h only needs the one, 13979now. 13980 13981(2.5) Make it possible to select method of bios restoring after S3 13982resume. [=> no more ugly ifdefs] (Pavel Machek) 13983 13984(2.5) Make proc write interfaces work (Pavel Machek) 13985 13986(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 13987 13988(2.5) Break out ACPI Perf code into its own module, under cpufreq 13989(Dominik Brodowski) 13990 13991(2.4) S4BIOS support (Ducrot Bruno) 13992 13993(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 13994Visinoni) 13995 13996 139973) iASL Compiler: 13998 13999Added support to disassemble SSDT and PSDTs. 14000 14001Implemented support to obtain SSDTs from the Windows registry if 14002available. 14003 14004 14005---------------------------------------- 1400609 January 2003. Summary of changes for version 20030109. 14007 140081) ACPI CA Core Subsystem: 14009 14010Changed the behavior of the internal Buffer-to-String conversion 14011function. The current ACPI specification states that the contents 14012of the buffer are "converted to a string of two-character 14013hexadecimal numbers, each separated by a space". Unfortunately, 14014this definition is not backwards compatible with existing ACPI 1.0 14015implementations (although the behavior was not defined in the ACPI 140161.0 specification). The new behavior simply copies data from the 14017buffer to the string until a null character is found or the end of 14018the buffer is reached. The new String object is always null 14019terminated. This problem was seen during the generation of _BIF 14020battery data where incorrect strings were returned for battery 14021type, etc. This will also require an errata to the ACPI 14022specification. 14023 14024Renamed all instances of NATIVE_UINT and NATIVE_INT to 14025ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 14026 14027Copyright in all module headers (both Linux and non-Linux) has be 14028updated to 2003. 14029 14030Code and Data Size: Current core subsystem library sizes are shown 14031below. These are the code and data sizes for the acpica.lib 14032produced by the Microsoft Visual C++ 6.0 compiler, and these 14033values do not include any ACPI driver or OSPM code. The debug 14034version of the code includes the debug output trace mechanism and 14035has a much larger code and data size. Note that these values will 14036vary depending on the efficiency of the compiler and the compiler 14037options used during generation. 14038 14039 Previous Release 14040 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 14041 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 14042 Current Release: 14043 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 14044 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 14045 14046 140472) Linux 14048 14049Fixed an oops on module insertion/removal (Matthew Tippett) 14050 14051(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 14052 14053(2.5) Replace pr_debug (Randy Dunlap) 14054 14055(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 14056 14057(Both) Eliminate spawning of thread from timer callback, in favor 14058of schedule_work() 14059 14060(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 14061 14062(Both) Added define for Fixed Function HW region (Matthew Wilcox) 14063 14064(Both) Add missing statics to button.c (Pavel Machek) 14065 14066Several changes have been made to the source code translation 14067utility that generates the Linux Code in order to make the code 14068more "Linux-like": 14069 14070All typedefs on structs and unions have been removed in keeping 14071with the Linux coding style. 14072 14073Removed the non-Linux SourceSafe module revision number from each 14074module header. 14075 14076Completed major overhaul of symbols to be lowercased for linux. 14077Doubled the number of symbols that are lowercased. 14078 14079Fixed a problem where identifiers within procedure headers and 14080within quotes were not fully lower cased (they were left with a 14081starting capital.) 14082 14083Some C macros whose only purpose is to allow the generation of 16- 14084bit code are now completely removed in the Linux code, increasing 14085readability and maintainability. 14086 14087---------------------------------------- 14088 1408912 December 2002. Summary of changes for version 20021212. 14090 14091 140921) ACPI CA Core Subsystem: 14093 14094Fixed a problem where the creation of a zero-length AML Buffer 14095would cause a fault. 14096 14097Fixed a problem where a Buffer object that pointed to a static AML 14098buffer (in an ACPI table) could inadvertently be deleted, causing 14099memory corruption. 14100 14101Fixed a problem where a user buffer (passed in to the external 14102ACPI CA interfaces) could be overwritten if the buffer was too 14103small to complete the operation, causing memory corruption. 14104 14105Fixed a problem in the Buffer-to-String conversion code where a 14106string of length one was always returned, regardless of the size 14107of the input Buffer object. 14108 14109Removed the NATIVE_CHAR data type across the entire source due to 14110lack of need and lack of consistent use. 14111 14112Code and Data Size: Current core subsystem library sizes are shown 14113below. These are the code and data sizes for the acpica.lib 14114produced by the Microsoft Visual C++ 6.0 compiler, and these 14115values do not include any ACPI driver or OSPM code. The debug 14116version of the code includes the debug output trace mechanism and 14117has a much larger code and data size. Note that these values will 14118vary depending on the efficiency of the compiler and the compiler 14119options used during generation. 14120 14121 Previous Release 14122 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 14123 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 14124 Current Release: 14125 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 14126 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 14127 14128 14129---------------------------------------- 1413005 December 2002. Summary of changes for version 20021205. 14131 141321) ACPI CA Core Subsystem: 14133 14134Fixed a problem where a store to a String or Buffer object could 14135cause corruption of the DSDT if the object type being stored was 14136the same as the target object type and the length of the object 14137being stored was equal to or smaller than the original (existing) 14138target object. This was seen to cause corruption of battery _BIF 14139buffers if the _BIF method modified the buffer on the fly. 14140 14141Fixed a problem where an internal error was generated if a control 14142method invocation was used in an OperationRegion, Buffer, or 14143Package declaration. This was caused by the deferred parsing of 14144the control method and thus the deferred creation of the internal 14145method object. The solution to this problem was to create the 14146internal method object at the moment the method is encountered in 14147the first pass - so that subsequent references to the method will 14148able to obtain the required parameter count and thus properly 14149parse the method invocation. This problem presented itself as an 14150AE_AML_INTERNAL during the pass 1 parse phase during table load. 14151 14152Fixed a problem where the internal String object copy routine did 14153not always allocate sufficient memory for the target String object 14154and caused memory corruption. This problem was seen to cause 14155"Allocation already present in list!" errors as memory allocation 14156became corrupted. 14157 14158Implemented a new function for the evaluation of namespace objects 14159that allows the specification of the allowable return object 14160types. This simplifies a lot of code that checks for a return 14161object of one or more specific objects returned from the 14162evaluation (such as _STA, etc.) This may become and external 14163function if it would be useful to ACPI-related drivers. 14164 14165Completed another round of prefixing #defines with "ACPI_" for 14166clarity. 14167 14168Completed additional code restructuring to allow more modular 14169linking for iASL compiler and AcpiExec. Several files were split 14170creating new files. New files: nsparse.c dsinit.c evgpe.c 14171 14172Implemented an abort mechanism to terminate an executing control 14173method via the AML debugger. This feature is useful for debugging 14174control methods that depend (wait) for specific hardware 14175responses. 14176 14177Code and Data Size: Current core subsystem library sizes are shown 14178below. These are the code and data sizes for the acpica.lib 14179produced by the Microsoft Visual C++ 6.0 compiler, and these 14180values do not include any ACPI driver or OSPM code. The debug 14181version of the code includes the debug output trace mechanism and 14182has a much larger code and data size. Note that these values will 14183vary depending on the efficiency of the compiler and the compiler 14184options used during generation. 14185 14186 Previous Release 14187 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 14188 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 14189 Current Release: 14190 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 14191 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 14192 14193 141942) iASL Compiler/Disassembler 14195 14196Fixed a compiler code generation problem for "Interrupt" Resource 14197Descriptors. If specified in the ASL, the optional "Resource 14198Source Index" and "Resource Source" fields were not inserted into 14199the correct location within the AML resource descriptor, creating 14200an invalid descriptor. 14201 14202Fixed a disassembler problem for "Interrupt" resource descriptors. 14203The optional "Resource Source Index" and "Resource Source" fields 14204were ignored. 14205 14206 14207---------------------------------------- 1420822 November 2002. Summary of changes for version 20021122. 14209 14210 142111) ACPI CA Core Subsystem: 14212 14213Fixed a reported problem where an object stored to a Method Local 14214or Arg was not copied to a new object during the store - the 14215object pointer was simply copied to the Local/Arg. This caused 14216all subsequent operations on the Local/Arg to also affect the 14217original source of the store operation. 14218 14219Fixed a problem where a store operation to a Method Local or Arg 14220was not completed properly if the Local/Arg contained a reference 14221(from RefOf) to a named field. The general-purpose store-to- 14222namespace-node code is now used so that this case is handled 14223automatically. 14224 14225Fixed a problem where the internal object copy routine would cause 14226a protection fault if the object being copied was a Package and 14227contained either 1) a NULL package element or 2) a nested sub- 14228package. 14229 14230Fixed a problem with the GPE initialization that resulted from an 14231ambiguity in the ACPI specification. One section of the 14232specification states that both the address and length of the GPE 14233block must be zero if the block is not supported. Another section 14234implies that only the address need be zero if the block is not 14235supported. The code has been changed so that both the address and 14236the length must be non-zero to indicate a valid GPE block (i.e., 14237if either the address or the length is zero, the GPE block is 14238invalid.) 14239 14240Code and Data Size: Current core subsystem library sizes are shown 14241below. These are the code and data sizes for the acpica.lib 14242produced by the Microsoft Visual C++ 6.0 compiler, and these 14243values do not include any ACPI driver or OSPM code. The debug 14244version of the code includes the debug output trace mechanism and 14245has a much larger code and data size. Note that these values will 14246vary depending on the efficiency of the compiler and the compiler 14247options used during generation. 14248 14249 Previous Release 14250 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 14251 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 14252 Current Release: 14253 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 14254 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 14255 14256 142572) Linux 14258 14259Cleaned up EC driver. Exported an external EC read/write 14260interface. By going through this, other drivers (most notably 14261sonypi) will be able to serialize access to the EC. 14262 14263 142643) iASL Compiler/Disassembler 14265 14266Implemented support to optionally generate include files for both 14267ASM and C (the -i switch). This simplifies BIOS development by 14268automatically creating include files that contain external 14269declarations for the symbols that are created within the 14270 14271(optionally generated) ASM and C AML source files. 14272 14273 14274---------------------------------------- 1427515 November 2002. Summary of changes for version 20021115. 14276 142771) ACPI CA Core Subsystem: 14278 14279Fixed a memory leak problem where an error during resolution of 14280 14281method arguments during a method invocation from another method 14282failed to cleanup properly by deleting all successfully resolved 14283argument objects. 14284 14285Fixed a problem where the target of the Index() operator was not 14286correctly constructed if the source object was a package. This 14287problem has not been detected because the use of a target operand 14288with Index() is very rare. 14289 14290Fixed a problem with the Index() operator where an attempt was 14291made to delete the operand objects twice. 14292 14293Fixed a problem where an attempt was made to delete an operand 14294twice during execution of the CondRefOf() operator if the target 14295did not exist. 14296 14297Implemented the first of perhaps several internal create object 14298functions that create and initialize a specific object type. This 14299consolidates duplicated code wherever the object is created, thus 14300shrinking the size of the subsystem. 14301 14302Implemented improved debug/error messages for errors that occur 14303during nested method invocations. All executing method pathnames 14304are displayed (with the error) as the call stack is unwound - thus 14305simplifying debug. 14306 14307Fixed a problem introduced in the 10/02 release that caused 14308premature deletion of a buffer object if a buffer was used as an 14309ASL operand where an integer operand is required (Thus causing an 14310implicit object conversion from Buffer to Integer.) The change in 14311the 10/02 release was attempting to fix a memory leak (albeit 14312incorrectly.) 14313 14314Code and Data Size: Current core subsystem library sizes are shown 14315below. These are the code and data sizes for the acpica.lib 14316produced by the Microsoft Visual C++ 6.0 compiler, and these 14317values do not include any ACPI driver or OSPM code. The debug 14318version of the code includes the debug output trace mechanism and 14319has a much larger code and data size. Note that these values will 14320vary depending on the efficiency of the compiler and the compiler 14321options used during generation. 14322 14323 Previous Release 14324 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 14325 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 14326 Current Release: 14327 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 14328 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 14329 14330 143312) Linux 14332 14333Changed the implementation of the ACPI semaphores to use down() 14334instead of down_interruptable(). It is important that the 14335execution of ACPI control methods not be interrupted by signals. 14336Methods must run to completion, or the system may be left in an 14337unknown/unstable state. 14338 14339Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 14340(Shawn Starr) 14341 14342 143433) iASL Compiler/Disassembler 14344 14345 14346Changed the default location of output files. All output files 14347are now placed in the current directory by default instead of in 14348the directory of the source file. This change may affect some 14349existing makefiles, but it brings the behavior of the compiler in 14350line with other similar tools. The location of the output files 14351can be overridden with the -p command line switch. 14352 14353 14354---------------------------------------- 1435511 November 2002. Summary of changes for version 20021111. 14356 14357 143580) ACPI Specification 2.0B is released and is now available at: 14359http://www.acpi.info/index.html 14360 14361 143621) ACPI CA Core Subsystem: 14363 14364Implemented support for the ACPI 2.0 SMBus Operation Regions. 14365This includes the early detection and handoff of the request to 14366the SMBus region handler (avoiding all of the complex field 14367support code), and support for the bidirectional return packet 14368from an SMBus write operation. This paves the way for the 14369development of SMBus drivers in each host operating system. 14370 14371Fixed a problem where the semaphore WAIT_FOREVER constant was 14372defined as 32 bits, but must be 16 bits according to the ACPI 14373specification. This had the side effect of causing ASL 14374Mutex/Event timeouts even though the ASL code requested a wait 14375forever. Changed all internal references to the ACPI timeout 14376parameter to 16 bits to prevent future problems. Changed the name 14377of WAIT_FOREVER to ACPI_WAIT_FOREVER. 14378 14379Code and Data Size: Current core subsystem library sizes are shown 14380below. These are the code and data sizes for the acpica.lib 14381produced by the Microsoft Visual C++ 6.0 compiler, and these 14382values do not include any ACPI driver or OSPM code. The debug 14383version of the code includes the debug output trace mechanism and 14384has a much larger code and data size. Note that these values will 14385vary depending on the efficiency of the compiler and the compiler 14386options used during generation. 14387 14388 Previous Release 14389 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 14390 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 14391 Current Release: 14392 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 14393 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 14394 14395 143962) Linux 14397 14398Module loading/unloading fixes (John Cagle) 14399 14400 144013) iASL Compiler/Disassembler 14402 14403Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 14404 14405Implemented support for the disassembly of all SMBus protocol 14406keywords (SMBQuick, SMBWord, etc.) 14407 14408---------------------------------------- 1440901 November 2002. Summary of changes for version 20021101. 14410 14411 144121) ACPI CA Core Subsystem: 14413 14414Fixed a problem where platforms that have a GPE1 block but no GPE0 14415block were not handled correctly. This resulted in a "GPE 14416overlap" error message. GPE0 is no longer required. 14417 14418Removed code added in the previous release that inserted nodes 14419into the namespace in alphabetical order. This caused some side- 14420effects on various machines. The root cause of the problem is 14421still under investigation since in theory, the internal ordering 14422of the namespace nodes should not matter. 14423 14424 14425Enhanced error reporting for the case where a named object is not 14426found during control method execution. The full ACPI namepath 14427(name reference) of the object that was not found is displayed in 14428this case. 14429 14430Note: as a result of the overhaul of the namespace object types in 14431the previous release, the namespace nodes for the predefined 14432scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 14433instead of ACPI_TYPE_ANY. This simplifies the namespace 14434management code but may affect code that walks the namespace tree 14435looking for specific object types. 14436 14437Code and Data Size: Current core subsystem library sizes are shown 14438below. These are the code and data sizes for the acpica.lib 14439produced by the Microsoft Visual C++ 6.0 compiler, and these 14440values do not include any ACPI driver or OSPM code. The debug 14441version of the code includes the debug output trace mechanism and 14442has a much larger code and data size. Note that these values will 14443vary depending on the efficiency of the compiler and the compiler 14444options used during generation. 14445 14446 Previous Release 14447 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 14448 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 14449 Current Release: 14450 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 14451 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 14452 14453 144542) Linux 14455 14456Fixed a problem introduced in the previous release where the 14457Processor and Thermal objects were not recognized and installed in 14458/proc. This was related to the scope type change described above. 14459 14460 144613) iASL Compiler/Disassembler 14462 14463Implemented the -g option to get all of the required ACPI tables 14464from the registry and save them to files (Windows version of the 14465compiler only.) The required tables are the FADT, FACS, and DSDT. 14466 14467Added ACPI table checksum validation during table disassembly in 14468order to catch corrupted tables. 14469 14470 14471---------------------------------------- 1447222 October 2002. Summary of changes for version 20021022. 14473 144741) ACPI CA Core Subsystem: 14475 14476Implemented a restriction on the Scope operator that the target 14477must already exist in the namespace at the time the operator is 14478encountered (during table load or method execution). In other 14479words, forward references are not allowed and Scope() cannot 14480create a new object. This changes the previous behavior where the 14481interpreter would create the name if not found. This new behavior 14482correctly enables the search-to-root algorithm during namespace 14483lookup of the target name. Because of this upsearch, this fixes 14484the known Compaq _SB_.OKEC problem and makes both the AML 14485interpreter and iASL compiler compatible with other ACPI 14486implementations. 14487 14488Completed a major overhaul of the internal ACPI object types for 14489the ACPI Namespace and the associated operand objects. Many of 14490these types had become obsolete with the introduction of the two- 14491pass namespace load. This cleanup simplifies the code and makes 14492the entire namespace load mechanism much clearer and easier to 14493understand. 14494 14495Improved debug output for tracking scope opening/closing to help 14496diagnose scoping issues. The old scope name as well as the new 14497scope name are displayed. Also improved error messages for 14498problems with ASL Mutex objects and error messages for GPE 14499problems. 14500 14501Cleaned up the namespace dump code, removed obsolete code. 14502 14503All string output (for all namespace/object dumps) now uses the 14504common ACPI string output procedure which handles escapes properly 14505and does not emit non-printable characters. 14506 14507Fixed some issues with constants in the 64-bit version of the 14508local C library (utclib.c) 14509 14510 145112) Linux 14512 14513EC Driver: No longer attempts to acquire the Global Lock at 14514interrupt level. 14515 14516 145173) iASL Compiler/Disassembler 14518 14519Implemented ACPI 2.0B grammar change that disallows all Type 1 and 145202 opcodes outside of a control method. This means that the 14521"executable" operators (versus the "namespace" operators) cannot 14522be used at the table level; they can only be used within a control 14523method. 14524 14525Implemented the restriction on the Scope() operator where the 14526target must already exist in the namespace at the time the 14527operator is encountered (during ASL compilation). In other words, 14528forward references are not allowed and Scope() cannot create a new 14529object. This makes the iASL compiler compatible with other ACPI 14530implementations and makes the Scope() implementation adhere to the 14531ACPI specification. 14532 14533Fixed a problem where namepath optimization for the Alias operator 14534was optimizing the wrong path (of the two namepaths.) This caused 14535a "Missing alias link" error message. 14536 14537Fixed a problem where an "unknown reserved name" warning could be 14538incorrectly generated for names like "_SB" when the trailing 14539underscore is not used in the original ASL. 14540 14541Fixed a problem where the reserved name check did not handle 14542NamePaths with multiple NameSegs correctly. The first nameseg of 14543the NamePath was examined instead of the last NameSeg. 14544 14545 14546---------------------------------------- 14547 1454802 October 2002. Summary of changes for this release. 14549 14550 145511) ACPI CA Core Subsystem version 20021002: 14552 14553Fixed a problem where a store/copy of a string to an existing 14554string did not always set the string length properly in the String 14555object. 14556 14557Fixed a reported problem with the ToString operator where the 14558behavior was identical to the ToHexString operator instead of just 14559simply converting a raw buffer to a string data type. 14560 14561Fixed a problem where CopyObject and the other "explicit" 14562conversion operators were not updating the internal namespace node 14563type as part of the store operation. 14564 14565Fixed a memory leak during implicit source operand conversion 14566where the original object was not deleted if it was converted to a 14567new object of a different type. 14568 14569Enhanced error messages for all problems associated with namespace 14570lookups. Common procedure generates and prints the lookup name as 14571well as the formatted status. 14572 14573Completed implementation of a new design for the Alias support 14574within the namespace. The existing design did not handle the case 14575where a new object was assigned to one of the two names due to the 14576use of an explicit conversion operator, resulting in the two names 14577pointing to two different objects. The new design simply points 14578the Alias name to the original name node - not to the object. 14579This results in a level of indirection that must be handled in the 14580name resolution mechanism. 14581 14582Code and Data Size: Current core subsystem library sizes are shown 14583below. These are the code and data sizes for the acpica.lib 14584produced by the Microsoft Visual C++ 6.0 compiler, and these 14585values do not include any ACPI driver or OSPM code. The debug 14586version of the code includes the debug output trace mechanism and 14587has a larger code and data size. Note that these values will vary 14588depending on the efficiency of the compiler and the compiler 14589options used during generation. 14590 14591 Previous Release 14592 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 14593 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 14594 Current Release: 14595 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 14596 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 14597 14598 145992) Linux 14600 14601Initialize thermal driver's timer before it is used. (Knut 14602Neumann) 14603 14604Allow handling negative celsius values. (Kochi Takayoshi) 14605 14606Fix thermal management and make trip points. R/W (Pavel Machek) 14607 14608Fix /proc/acpi/sleep. (P. Christeas) 14609 14610IA64 fixes. (David Mosberger) 14611 14612Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 14613 14614Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 14615Brodowski) 14616 14617 146183) iASL Compiler/Disassembler 14619 14620Clarified some warning/error messages. 14621 14622 14623---------------------------------------- 1462418 September 2002. Summary of changes for this release. 14625 14626 146271) ACPI CA Core Subsystem version 20020918: 14628 14629Fixed a reported problem with reference chaining (via the Index() 14630and RefOf() operators) in the ObjectType() and SizeOf() operators. 14631The definition of these operators includes the dereferencing of 14632all chained references to return information on the base object. 14633 14634Fixed a problem with stores to indexed package elements - the 14635existing code would not complete the store if an "implicit 14636conversion" was not performed. In other words, if the existing 14637object (package element) was to be replaced completely, the code 14638didn't handle this case. 14639 14640Relaxed typechecking on the ASL "Scope" operator to allow the 14641target name to refer to an object of type Integer, String, or 14642Buffer, in addition to the scoping object types (Device, 14643predefined Scopes, Processor, PowerResource, and ThermalZone.) 14644This allows existing AML code that has workarounds for a bug in 14645Windows to function properly. A warning is issued, however. This 14646affects both the AML interpreter and the iASL compiler. Below is 14647an example of this type of ASL code: 14648 14649 Name(DEB,0x00) 14650 Scope(DEB) 14651 { 14652 14653Fixed some reported problems with 64-bit integer support in the 14654local implementation of C library functions (clib.c) 14655 14656 146572) Linux 14658 14659Use ACPI fix map region instead of IOAPIC region, since it is 14660undefined in non-SMP. 14661 14662Ensure that the SCI has the proper polarity and trigger, even on 14663systems that do not have an interrupt override entry in the MADT. 14664 146652.5 big driver reorganization (Pat Mochel) 14666 14667Use early table mapping code from acpitable.c (Andi Kleen) 14668 14669New blacklist entries (Andi Kleen) 14670 14671Blacklist improvements. Split blacklist code out into a separate 14672file. Move checking the blacklist to very early. Previously, we 14673would use ACPI tables, and then halfway through init, check the 14674blacklist -- too late. Now, it's early enough to completely fall- 14675back to non-ACPI. 14676 14677 146783) iASL Compiler/Disassembler version 20020918: 14679 14680Fixed a problem where the typechecking code didn't know that an 14681alias could point to a method. In other words, aliases were not 14682being dereferenced during typechecking. 14683 14684 14685---------------------------------------- 1468629 August 2002. Summary of changes for this release. 14687 146881) ACPI CA Core Subsystem Version 20020829: 14689 14690If the target of a Scope() operator already exists, it must be an 14691object type that actually opens a scope -- such as a Device, 14692Method, Scope, etc. This is a fatal runtime error. Similar error 14693check has been added to the iASL compiler also. 14694 14695Tightened up the namespace load to disallow multiple names in the 14696same scope. This previously was allowed if both objects were of 14697the same type. (i.e., a lookup was the same as entering a new 14698name). 14699 14700 147012) Linux 14702 14703Ensure that the ACPI interrupt has the proper trigger and 14704polarity. 14705 14706local_irq_disable is extraneous. (Matthew Wilcox) 14707 14708Make "acpi=off" actually do what it says, and not use the ACPI 14709interpreter *or* the tables. 14710 14711Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 14712Takayoshi) 14713 14714 147153) iASL Compiler/Disassembler Version 20020829: 14716 14717Implemented namepath optimization for name declarations. For 14718example, a declaration like "Method (\_SB_.ABCD)" would get 14719optimized to "Method (ABCD)" if the declaration is within the 14720\_SB_ scope. This optimization is in addition to the named 14721reference path optimization first released in the previous 14722version. This would seem to complete all possible optimizations 14723for namepaths within the ASL/AML. 14724 14725If the target of a Scope() operator already exists, it must be an 14726object type that actually opens a scope -- such as a Device, 14727Method, Scope, etc. 14728 14729Implemented a check and warning for unreachable code in the same 14730block below a Return() statement. 14731 14732Fixed a problem where the listing file was not generated if the 14733compiler aborted if the maximum error count was exceeded (200). 14734 14735Fixed a problem where the typechecking of method return values was 14736broken. This includes the check for a return value when the 14737method is invoked as a TermArg (a return value is expected.) 14738 14739Fixed a reported problem where EOF conditions during a quoted 14740string or comment caused a fault. 14741 14742 14743---------------------------------------- 1474415 August 2002. Summary of changes for this release. 14745 147461) ACPI CA Core Subsystem Version 20020815: 14747 14748Fixed a reported problem where a Store to a method argument that 14749contains a reference did not perform the indirect store correctly. 14750This problem was created during the conversion to the new 14751reference object model - the indirect store to a method argument 14752code was not updated to reflect the new model. 14753 14754Reworked the ACPI mode change code to better conform to ACPI 2.0, 14755handle corner cases, and improve code legibility (Kochi Takayoshi) 14756 14757Fixed a problem with the pathname parsing for the carat (^) 14758prefix. The heavy use of the carat operator by the new namepath 14759optimization in the iASL compiler uncovered a problem with the AML 14760interpreter handling of this prefix. In the case where one or 14761more carats precede a single nameseg, the nameseg was treated as 14762standalone and the search rule (to root) was inadvertently 14763applied. This could cause both the iASL compiler and the 14764interpreter to find the wrong object or to miss the error that 14765should occur if the object does not exist at that exact pathname. 14766 14767Found and fixed the problem where the HP Pavilion DSDT would not 14768load. This was a relatively minor tweak to the table loading code 14769(a problem caused by the unexpected encounter with a method 14770invocation not within a control method), but it does not solve the 14771overall issue of the execution of AML code at the table level. 14772This investigation is still ongoing. 14773 14774Code and Data Size: Current core subsystem library sizes are shown 14775below. These are the code and data sizes for the acpica.lib 14776produced by the Microsoft Visual C++ 6.0 compiler, and these 14777values do not include any ACPI driver or OSPM code. The debug 14778version of the code includes the debug output trace mechanism and 14779has a larger code and data size. Note that these values will vary 14780depending on the efficiency of the compiler and the compiler 14781options used during generation. 14782 14783 Previous Release 14784 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 14785 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 14786 Current Release: 14787 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 14788 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 14789 14790 147912) Linux 14792 14793Remove redundant slab.h include (Brad Hards) 14794 14795Fix several bugs in thermal.c (Herbert Nachtnebel) 14796 14797Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 14798 14799Change acpi_system_suspend to use updated irq functions (Pavel 14800Machek) 14801 14802Export acpi_get_firmware_table (Matthew Wilcox) 14803 14804Use proper root proc entry for ACPI (Kochi Takayoshi) 14805 14806Fix early-boot table parsing (Bjorn Helgaas) 14807 14808 148093) iASL Compiler/Disassembler 14810 14811Reworked the compiler options to make them more consistent and to 14812use two-letter options where appropriate. We were running out of 14813sensible letters. This may break some makefiles, so check the 14814current options list by invoking the compiler with no parameters. 14815 14816Completed the design and implementation of the ASL namepath 14817optimization option for the compiler. This option optimizes all 14818references to named objects to the shortest possible path. The 14819first attempt tries to utilize a single nameseg (4 characters) and 14820the "search-to-root" algorithm used by the interpreter. If that 14821cannot be used (because either the name is not in the search path 14822or there is a conflict with another object with the same name), 14823the pathname is optimized using the carat prefix (usually a 14824shorter string than specifying the entire path from the root.) 14825 14826Implemented support to obtain the DSDT from the Windows registry 14827(when the disassembly option is specified with no input file). 14828Added this code as the implementation for AcpiOsTableOverride in 14829the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 14830utility) to scan memory for the DSDT to the AcpiOsTableOverride 14831function in the DOS OSL to make the disassembler truly OS 14832independent. 14833 14834Implemented a new option to disassemble and compile in one step. 14835When used without an input filename, this option will grab the 14836DSDT from the local machine, disassemble it, and compile it in one 14837step. 14838 14839Added a warning message for invalid escapes (a backslash followed 14840by any character other than the allowable escapes). This catches 14841the quoted string error "\_SB_" (which should be "\\_SB_" ). 14842 14843Also, there are numerous instances in the ACPI specification where 14844this error occurs. 14845 14846Added a compiler option to disable all optimizations. This is 14847basically the "compatibility mode" because by using this option, 14848the AML code will come out exactly the same as other ASL 14849compilers. 14850 14851Added error messages for incorrectly ordered dependent resource 14852functions. This includes: missing EndDependentFn macro at end of 14853dependent resource list, nested dependent function macros (both 14854start and end), and missing StartDependentFn macro. These are 14855common errors that should be caught at compile time. 14856 14857Implemented _OSI support for the disassembler and compiler. _OSI 14858must be included in the namespace for proper disassembly (because 14859the disassembler must know the number of arguments.) 14860 14861Added an "optimization" message type that is optional (off by 14862default). This message is used for all optimizations - including 14863constant folding, integer optimization, and namepath optimization. 14864 14865---------------------------------------- 1486625 July 2002. Summary of changes for this release. 14867 14868 148691) ACPI CA Core Subsystem Version 20020725: 14870 14871The AML Disassembler has been enhanced to produce compilable ASL 14872code and has been integrated into the iASL compiler (see below) as 14873well as the single-step disassembly for the AML debugger and the 14874disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 14875resource templates and macros are fully supported. The 14876disassembler has been tested on over 30 different AML files, 14877producing identical AML when the resulting disassembled ASL file 14878is recompiled with the same ASL compiler. 14879 14880Modified the Resource Manager to allow zero interrupts and zero 14881dma channels during the GetCurrentResources call. This was 14882causing problems on some platforms. 14883 14884Added the AcpiOsRedirectOutput interface to the OSL to simplify 14885output redirection for the AcpiOsPrintf and AcpiOsVprintf 14886interfaces. 14887 14888Code and Data Size: Current core subsystem library sizes are shown 14889below. These are the code and data sizes for the acpica.lib 14890produced by the Microsoft Visual C++ 6.0 compiler, and these 14891values do not include any ACPI driver or OSPM code. The debug 14892version of the code includes the debug output trace mechanism and 14893has a larger code and data size. Note that these values will vary 14894depending on the efficiency of the compiler and the compiler 14895options used during generation. 14896 14897 Previous Release 14898 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 14899 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 14900 Current Release: 14901 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 14902 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 14903 14904 149052) Linux 14906 14907Fixed a panic in the EC driver (Dominik Brodowski) 14908 14909Implemented checksum of the R/XSDT itself during Linux table scan 14910(Richard Schaal) 14911 14912 149133) iASL compiler 14914 14915The AML disassembler is integrated into the compiler. The "-d" 14916option invokes the disassembler to completely disassemble an 14917input AML file, producing as output a text ASL file with the 14918extension ".dsl" (to avoid name collisions with existing .asl 14919source files.) A future enhancement will allow the disassembler 14920to obtain the BIOS DSDT from the registry under Windows. 14921 14922Fixed a problem with the VendorShort and VendorLong resource 14923descriptors where an invalid AML sequence was created. 14924 14925Implemented a fix for BufferData term in the ASL parser. It was 14926inadvertently defined twice, allowing invalid syntax to pass and 14927causing reduction conflicts. 14928 14929Fixed a problem where the Ones opcode could get converted to a 14930value of zero if "Ones" was used where a byte, word or dword value 14931was expected. The 64-bit value is now truncated to the correct 14932size with the correct value. 14933 14934 14935 14936---------------------------------------- 1493702 July 2002. Summary of changes for this release. 14938 14939 149401) ACPI CA Core Subsystem Version 20020702: 14941 14942The Table Manager code has been restructured to add several new 14943features. Tables that are not required by the core subsystem 14944(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 14945validated in any way and are returned from AcpiGetFirmwareTable if 14946requested. The AcpiOsTableOverride interface is now called for 14947each table that is loaded by the subsystem in order to allow the 14948host to override any table it chooses. Previously, only the DSDT 14949could be overridden. Added one new files, tbrsdt.c and 14950tbgetall.c. 14951 14952Fixed a problem with the conversion of internal package objects to 14953external objects (when a package is returned from a control 14954method.) The return buffer length was set to zero instead of the 14955proper length of the package object. 14956 14957Fixed a reported problem with the use of the RefOf and DeRefOf 14958operators when passing reference arguments to control methods. A 14959new type of Reference object is used internally for references 14960produced by the RefOf operator. 14961 14962Added additional error messages in the Resource Manager to explain 14963AE_BAD_DATA errors when they occur during resource parsing. 14964 14965Split the AcpiEnableSubsystem into two primitives to enable a 14966finer granularity initialization sequence. These two calls should 14967be called in this order: AcpiEnableSubsystem (flags), 14968AcpiInitializeObjects (flags). The flags parameter remains the 14969same. 14970 14971 149722) Linux 14973 14974Updated the ACPI utilities module to understand the new style of 14975fully resolved package objects that are now returned from the core 14976subsystem. This eliminates errors of the form: 14977 14978 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 14979 acpi_utils-0430 [145] acpi_evaluate_reference: 14980 Invalid element in package (not a device reference) 14981 14982The method evaluation utility uses the new buffer allocation 14983scheme instead of calling AcpiEvaluate Object twice. 14984 14985Added support for ECDT. This allows the use of the Embedded 14986 14987Controller before the namespace has been fully initialized, which 14988is necessary for ACPI 2.0 support, and for some laptops to 14989initialize properly. (Laptops using ECDT are still rare, so only 14990limited testing was performed of the added functionality.) 14991 14992Fixed memory leaks in the EC driver. 14993 14994Eliminated a brittle code structure in acpi_bus_init(). 14995 14996Eliminated the acpi_evaluate() helper function in utils.c. It is 14997no longer needed since acpi_evaluate_object can optionally 14998allocate memory for the return object. 14999 15000Implemented fix for keyboard hang when getting battery readings on 15001some systems (Stephen White) 15002 15003PCI IRQ routing update (Dominik Brodowski) 15004 15005Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 15006support 15007 15008---------------------------------------- 1500911 June 2002. Summary of changes for this release. 15010 15011 150121) ACPI CA Core Subsystem Version 20020611: 15013 15014Fixed a reported problem where constants such as Zero and One 15015appearing within _PRT packages were not handled correctly within 15016the resource manager code. Originally reported against the ASL 15017compiler because the code generator now optimizes integers to 15018their minimal AML representation (i.e. AML constants if possible.) 15019The _PRT code now handles all AML constant opcodes correctly 15020(Zero, One, Ones, Revision). 15021 15022Fixed a problem with the Concatenate operator in the AML 15023interpreter where a buffer result object was incorrectly marked as 15024not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 15025 15026All package sub-objects are now fully resolved before they are 15027returned from the external ACPI interfaces. This means that name 15028strings are resolved to object handles, and constant operators 15029(Zero, One, Ones, Revision) are resolved to Integers. 15030 15031Implemented immediate resolution of the AML Constant opcodes 15032(Zero, One, Ones, Revision) to Integer objects upon detection 15033within the AML stream. This has simplified and reduced the 15034generated code size of the subsystem by eliminating about 10 15035switch statements for these constants (which previously were 15036contained in Reference objects.) The complicating issues are that 15037the Zero opcode is used as a "placeholder" for unspecified 15038optional target operands and stores to constants are defined to be 15039no-ops. 15040 15041Code and Data Size: Current core subsystem library sizes are shown 15042below. These are the code and data sizes for the acpica.lib 15043produced by the Microsoft Visual C++ 6.0 compiler, and these 15044values do not include any ACPI driver or OSPM code. The debug 15045version of the code includes the debug output trace mechanism and 15046has a larger code and data size. Note that these values will vary 15047depending on the efficiency of the compiler and the compiler 15048options used during generation. 15049 15050 Previous Release 15051 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 15052 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 15053 Current Release: 15054 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 15055 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 15056 15057 150582) Linux 15059 15060 15061Added preliminary support for obtaining _TRA data for PCI root 15062bridges (Bjorn Helgaas). 15063 15064 150653) iASL Compiler Version X2046: 15066 15067Fixed a problem where the "_DDN" reserved name was defined to be a 15068control method with one argument. There are no arguments, and 15069_DDN does not have to be a control method. 15070 15071Fixed a problem with the Linux version of the compiler where the 15072source lines printed with error messages were the wrong lines. 15073This turned out to be the "LF versus CR/LF" difference between 15074Windows and Unix. This appears to be the longstanding issue 15075concerning listing output and error messages. 15076 15077Fixed a problem with the Linux version of compiler where opcode 15078names within error messages were wrong. This was caused by a 15079slight difference in the output of the Flex tool on Linux versus 15080Windows. 15081 15082Fixed a problem with the Linux compiler where the hex output files 15083contained some garbage data caused by an internal buffer overrun. 15084 15085 15086---------------------------------------- 1508717 May 2002. Summary of changes for this release. 15088 15089 150901) ACPI CA Core Subsystem Version 20020517: 15091 15092Implemented a workaround to an BIOS bug discovered on the HP 15093OmniBook where the FADT revision number and the table size are 15094inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 15095behavior is to fallback to using only the ACPI 1.0 fields of the 15096FADT if the table is too small to be a ACPI 2.0 table as claimed 15097by the revision number. Although this is a BIOS bug, this is a 15098case where the workaround is simple enough and with no side 15099effects, so it seemed prudent to add it. A warning message is 15100issued, however. 15101 15102Implemented minimum size checks for the fixed-length ACPI tables - 15103- the FADT and FACS, as well as consistency checks between the 15104revision number and the table size. 15105 15106Fixed a reported problem in the table override support where the 15107new table pointer was incorrectly treated as a physical address 15108instead of a logical address. 15109 15110Eliminated the use of the AE_AML_ERROR exception and replaced it 15111with more descriptive codes. 15112 15113Fixed a problem where an exception would occur if an ASL Field was 15114defined with no named Field Units underneath it (used by some 15115index fields). 15116 15117Code and Data Size: Current core subsystem library sizes are shown 15118below. These are the code and data sizes for the acpica.lib 15119produced by the Microsoft Visual C++ 6.0 compiler, and these 15120values do not include any ACPI driver or OSPM code. The debug 15121version of the code includes the debug output trace mechanism and 15122has a larger code and data size. Note that these values will vary 15123depending on the efficiency of the compiler and the compiler 15124options used during generation. 15125 15126 Previous Release 15127 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 15128 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 15129 Current Release: 15130 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 15131 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 15132 15133 15134 151352) Linux 15136 15137Much work done on ACPI init (MADT and PCI IRQ routing support). 15138(Paul D. and Dominik Brodowski) 15139 15140Fix PCI IRQ-related panic on boot (Sam Revitch) 15141 15142Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 15143 15144Fix "MHz" typo (Dominik Brodowski) 15145 15146Fix RTC year 2000 issue (Dominik Brodowski) 15147 15148Preclude multiple button proc entries (Eric Brunet) 15149 15150Moved arch-specific code out of include/platform/aclinux.h 15151 151523) iASL Compiler Version X2044: 15153 15154Implemented error checking for the string used in the EISAID macro 15155(Usually used in the definition of the _HID object.) The code now 15156strictly enforces the PnP format - exactly 7 characters, 3 15157uppercase letters and 4 hex digits. 15158 15159If a raw string is used in the definition of the _HID object 15160(instead of the EISAID macro), the string must contain all 15161alphanumeric characters (e.g., "*PNP0011" is not allowed because 15162of the asterisk.) 15163 15164Implemented checking for invalid use of ACPI reserved names for 15165most of the name creation operators (Name, Device, Event, Mutex, 15166OperationRegion, PowerResource, Processor, and ThermalZone.) 15167Previously, this check was only performed for control methods. 15168 15169Implemented an additional check on the Name operator to emit an 15170error if a reserved name that must be implemented in ASL as a 15171control method is used. We know that a reserved name must be a 15172method if it is defined with input arguments. 15173 15174The warning emitted when a namespace object reference is not found 15175during the cross reference phase has been changed into an error. 15176The "External" directive should be used for names defined in other 15177modules. 15178 15179 151804) Tools and Utilities 15181 15182The 16-bit tools (adump16 and aexec16) have been regenerated and 15183tested. 15184 15185Fixed a problem with the output of both acpidump and adump16 where 15186the indentation of closing parentheses and brackets was not 15187 15188aligned properly with the parent block. 15189 15190 15191---------------------------------------- 1519203 May 2002. Summary of changes for this release. 15193 15194 151951) ACPI CA Core Subsystem Version 20020503: 15196 15197Added support a new OSL interface that allows the host operating 15198 15199system software to override the DSDT found in the firmware - 15200AcpiOsTableOverride. With this interface, the OSL can examine the 15201version of the firmware DSDT and replace it with a different one 15202if desired. 15203 15204Added new external interfaces for accessing ACPI registers from 15205device drivers and other system software - AcpiGetRegister and 15206AcpiSetRegister. This was simply an externalization of the 15207existing AcpiHwBitRegister interfaces. 15208 15209Fixed a regression introduced in the previous build where the 15210ASL/AML CreateField operator always returned an error, 15211"destination must be a NS Node". 15212 15213Extended the maximum time (before failure) to successfully enable 15214ACPI mode to 3 seconds. 15215 15216Code and Data Size: Current core subsystem library sizes are shown 15217below. These are the code and data sizes for the acpica.lib 15218produced by the Microsoft Visual C++ 6.0 compiler, and these 15219values do not include any ACPI driver or OSPM code. The debug 15220version of the code includes the debug output trace mechanism and 15221has a larger code and data size. Note that these values will vary 15222depending on the efficiency of the compiler and the compiler 15223options used during generation. 15224 15225 Previous Release 15226 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 15227 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 15228 Current Release: 15229 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 15230 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 15231 15232 152332) Linux 15234 15235Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 15236free. While 3 out of 4 of our in-house systems work fine, the last 15237one still hangs when testing the LAPIC timer. 15238 15239Renamed many files in 2.5 kernel release to omit "acpi_" from the 15240name. 15241 15242Added warning on boot for Presario 711FR. 15243 15244Sleep improvements (Pavel Machek) 15245 15246ACPI can now be built without CONFIG_PCI enabled. 15247 15248IA64: Fixed memory map functions (JI Lee) 15249 15250 152513) iASL Compiler Version X2043: 15252 15253Added support to allow the compiler to be integrated into the MS 15254VC++ development environment for one-button compilation of single 15255files or entire projects -- with error-to-source-line mapping. 15256 15257Implemented support for compile-time constant folding for the 15258Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 15259specification. This allows the ASL writer to use expressions 15260instead of Integer/Buffer/String constants in terms that must 15261evaluate to constants at compile time and will also simplify the 15262emitted AML in any such sub-expressions that can be folded 15263(evaluated at compile-time.) This increases the size of the 15264compiler significantly because a portion of the ACPI CA AML 15265interpreter is included within the compiler in order to pre- 15266evaluate constant expressions. 15267 15268 15269Fixed a problem with the "Unicode" ASL macro that caused the 15270compiler to fault. (This macro is used in conjunction with the 15271_STR reserved name.) 15272 15273Implemented an AML opcode optimization to use the Zero, One, and 15274Ones opcodes where possible to further reduce the size of integer 15275constants and thus reduce the overall size of the generated AML 15276code. 15277 15278Implemented error checking for new reserved terms for ACPI version 152792.0A. 15280 15281Implemented the -qr option to display the current list of ACPI 15282reserved names known to the compiler. 15283 15284Implemented the -qc option to display the current list of ASL 15285operators that are allowed within constant expressions and can 15286therefore be folded at compile time if the operands are constants. 15287 15288 152894) Documentation 15290 15291Updated the Programmer's Reference for new interfaces, data types, 15292and memory allocation model options. 15293 15294Updated the iASL Compiler User Reference to apply new format and 15295add information about new features and options. 15296 15297---------------------------------------- 1529819 April 2002. Summary of changes for this release. 15299 153001) ACPI CA Core Subsystem Version 20020419: 15301 15302The source code base for the Core Subsystem has been completely 15303cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 15304versions. The Lint option files used are included in the 15305/acpi/generate/lint directory. 15306 15307Implemented enhanced status/error checking across the entire 15308Hardware manager subsystem. Any hardware errors (reported from 15309the OSL) are now bubbled up and will abort a running control 15310method. 15311 15312 15313Fixed a problem where the per-ACPI-table integer width (32 or 64) 15314was stored only with control method nodes, causing a fault when 15315non-control method code was executed during table loading. The 15316solution implemented uses a global variable to indicate table 15317width across the entire ACPI subsystem. Therefore, ACPI CA does 15318not support mixed integer widths across different ACPI tables 15319(DSDT, SSDT). 15320 15321Fixed a problem where NULL extended fields (X fields) in an ACPI 153222.0 ACPI FADT caused the table load to fail. Although the 15323existing ACPI specification is a bit fuzzy on this topic, the new 15324behavior is to fall back on a ACPI 1.0 field if the corresponding 15325ACPI 2.0 X field is zero (even though the table revision indicates 15326a full ACPI 2.0 table.) The ACPI specification will be updated to 15327clarify this issue. 15328 15329Fixed a problem with the SystemMemory operation region handler 15330where memory was always accessed byte-wise even if the AML- 15331specified access width was larger than a byte. This caused 15332problems on systems with memory-mapped I/O. Memory is now 15333accessed with the width specified. On systems that do not support 15334non-aligned transfers, a check is made to guarantee proper address 15335alignment before proceeding in order to avoid an AML-caused 15336alignment fault within the kernel. 15337 15338 15339Fixed a problem with the ExtendedIrq resource where only one byte 15340of the 4-byte Irq field was extracted. 15341 15342Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 15343function was out of date and required a rewrite. 15344 15345Code and Data Size: Current core subsystem library sizes are shown 15346below. These are the code and data sizes for the acpica.lib 15347produced by the Microsoft Visual C++ 6.0 compiler, and these 15348values do not include any ACPI driver or OSPM code. The debug 15349version of the code includes the debug output trace mechanism and 15350has a larger code and data size. Note that these values will vary 15351depending on the efficiency of the compiler and the compiler 15352options used during generation. 15353 15354 Previous Release 15355 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 15356 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 15357 Current Release: 15358 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 15359 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 15360 15361 153622) Linux 15363 15364PCI IRQ routing fixes (Dominik Brodowski) 15365 15366 153673) iASL Compiler Version X2042: 15368 15369Implemented an additional compile-time error check for a field 15370unit whose size + minimum access width would cause a run-time 15371access beyond the end-of-region. Previously, only the field size 15372itself was checked. 15373 15374The Core subsystem and iASL compiler now share a common parse 15375object in preparation for compile-time evaluation of the type 153763/4/5 ASL operators. 15377 15378 15379---------------------------------------- 15380Summary of changes for this release: 03_29_02 15381 153821) ACPI CA Core Subsystem Version 20020329: 15383 15384Implemented support for late evaluation of TermArg operands to 15385Buffer and Package objects. This allows complex expressions to be 15386used in the declarations of these object types. 15387 15388Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 153891.0, if the field was larger than 32 bits, it was returned as a 15390buffer - otherwise it was returned as an integer. In ACPI 2.0, 15391the field is returned as a buffer only if the field is larger than 1539264 bits. The TableRevision is now considered when making this 15393conversion to avoid incompatibility with existing ASL code. 15394 15395Implemented logical addressing for AcpiOsGetRootPointer. This 15396allows an RSDP with either a logical or physical address. With 15397this support, the host OS can now override all ACPI tables with 15398one logical RSDP. Includes implementation of "typed" pointer 15399support to allow a common data type for both physical and logical 15400pointers internally. This required a change to the 15401AcpiOsGetRootPointer interface. 15402 15403Implemented the use of ACPI 2.0 Generic Address Structures for all 15404GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 15405mapped I/O for these ACPI features. 15406 15407Initialization now ignores not only non-required tables (All 15408tables other than the FADT, FACS, DSDT, and SSDTs), but also does 15409not validate the table headers of unrecognized tables. 15410 15411Fixed a problem where a notify handler could only be 15412installed/removed on an object of type Device. All "notify" 15413 15414objects are now supported -- Devices, Processor, Power, and 15415Thermal. 15416 15417Removed most verbosity from the ACPI_DB_INFO debug level. Only 15418critical information is returned when this debug level is enabled. 15419 15420Code and Data Size: Current core subsystem library sizes are shown 15421below. These are the code and data sizes for the acpica.lib 15422produced by the Microsoft Visual C++ 6.0 compiler, and these 15423values do not include any ACPI driver or OSPM code. The debug 15424version of the code includes the debug output trace mechanism and 15425has a larger code and data size. Note that these values will vary 15426depending on the efficiency of the compiler and the compiler 15427options used during generation. 15428 15429 Previous Release 15430 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 15431 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 15432 Current Release: 15433 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 15434 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 15435 15436 154372) Linux: 15438 15439The processor driver (acpi_processor.c) now fully supports ACPI 154402.0-based processor performance control (e.g. Intel(R) 15441SpeedStep(TM) technology) Note that older laptops that only have 15442the Intel "applet" interface are not supported through this. The 15443'limit' and 'performance' interface (/proc) are fully functional. 15444[Note that basic policy for controlling performance state 15445transitions will be included in the next version of ospmd.] The 15446idle handler was modified to more aggressively use C2, and PIIX4 15447errata handling underwent a complete overhaul (big thanks to 15448Dominik Brodowski). 15449 15450Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 15451based devices in the ACPI namespace are now dynamically bound 15452(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 15453This allows, among other things, ACPI to resolve bus numbers for 15454subordinate PCI bridges. 15455 15456Enhanced PCI IRQ routing to get the proper bus number for _PRT 15457entries defined underneath PCI bridges. 15458 15459Added IBM 600E to bad bios list due to invalid _ADR value for 15460PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 15461 15462In the process of adding full MADT support (e.g. IOAPIC) for IA32 15463(acpi.c, mpparse.c) -- stay tuned. 15464 15465Added back visual differentiation between fixed-feature and 15466control-method buttons in dmesg. Buttons are also subtyped (e.g. 15467button/power/PWRF) to simplify button identification. 15468 15469We no longer use -Wno-unused when compiling debug. Please ignore 15470any "_THIS_MODULE defined but not used" messages. 15471 15472Can now shut down the system using "magic sysrq" key. 15473 15474 154753) iASL Compiler version 2041: 15476 15477Fixed a problem where conversion errors for hex/octal/decimal 15478constants were not reported. 15479 15480Implemented a fix for the General Register template Address field. 15481This field was 8 bits when it should be 64. 15482 15483Fixed a problem where errors/warnings were no longer being emitted 15484within the listing output file. 15485 15486Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 15487exactly 4 characters, alphanumeric only. 15488 15489 15490 15491 15492---------------------------------------- 15493Summary of changes for this release: 03_08_02 15494 15495 154961) ACPI CA Core Subsystem Version 20020308: 15497 15498Fixed a problem with AML Fields where the use of the "AccessAny" 15499keyword could cause an interpreter error due to attempting to read 15500or write beyond the end of the parent Operation Region. 15501 15502Fixed a problem in the SystemMemory Operation Region handler where 15503an attempt was made to map memory beyond the end of the region. 15504This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 15505errors on some Linux systems. 15506 15507Fixed a problem where the interpreter/namespace "search to root" 15508algorithm was not functioning for some object types. Relaxed the 15509internal restriction on the search to allow upsearches for all 15510external object types as well as most internal types. 15511 15512 155132) Linux: 15514 15515We now use safe_halt() macro versus individual calls to sti | hlt. 15516 15517Writing to the processor limit interface should now work. "echo 1" 15518will increase the limit, 2 will decrease, and 0 will reset to the 15519 15520default. 15521 15522 155233) ASL compiler: 15524 15525Fixed segfault on Linux version. 15526 15527 15528---------------------------------------- 15529Summary of changes for this release: 02_25_02 15530 155311) ACPI CA Core Subsystem: 15532 15533 15534Fixed a problem where the GPE bit masks were not initialized 15535properly, causing erratic GPE behavior. 15536 15537Implemented limited support for multiple calling conventions. The 15538code can be generated with either the VPL (variable parameter 15539list, or "C") convention, or the FPL (fixed parameter list, or 15540"Pascal") convention. The core subsystem is about 3.4% smaller 15541when generated with FPL. 15542 15543 155442) Linux 15545 15546Re-add some /proc/acpi/event functionality that was lost during 15547the rewrite 15548 15549Resolved issue with /proc events for fixed-feature buttons showing 15550up as the system device. 15551 15552Fixed checks on C2/C3 latencies to be inclusive of maximum values. 15553 15554Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 15555 15556Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 15557 15558Fixed limit interface & usage to fix bugs with passive cooling 15559hysterisis. 15560 15561Restructured PRT support. 15562 15563 15564---------------------------------------- 15565Summary of changes for this label: 02_14_02 15566 15567 155681) ACPI CA Core Subsystem: 15569 15570Implemented support in AcpiLoadTable to allow loading of FACS and 15571FADT tables. 15572 15573Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 15574been removed. All 64-bit platforms should be migrated to the ACPI 155752.0 tables. The actbl71.h header has been removed from the source 15576tree. 15577 15578All C macros defined within the subsystem have been prefixed with 15579"ACPI_" to avoid collision with other system include files. 15580 15581Removed the return value for the two AcpiOsPrint interfaces, since 15582it is never used and causes lint warnings for ignoring the return 15583value. 15584 15585Added error checking to all internal mutex acquire and release 15586calls. Although a failure from one of these interfaces is 15587probably a fatal system error, these checks will cause the 15588immediate abort of the currently executing method or interface. 15589 15590Fixed a problem where the AcpiSetCurrentResources interface could 15591fault. This was a side effect of the deployment of the new memory 15592allocation model. 15593 15594Fixed a couple of problems with the Global Lock support introduced 15595in the last major build. The "common" (1.0/2.0) internal FACS was 15596being overwritten with the FACS signature and clobbering the 15597Global Lock pointer. Also, the actual firmware FACS was being 15598unmapped after construction of the "common" FACS, preventing 15599access to the actual Global Lock field within it. The "common" 15600internal FACS is no longer installed as an actual ACPI table; it 15601is used simply as a global. 15602 15603Code and Data Size: Current core subsystem library sizes are shown 15604below. These are the code and data sizes for the acpica.lib 15605produced by the Microsoft Visual C++ 6.0 compiler, and these 15606values do not include any ACPI driver or OSPM code. The debug 15607version of the code includes the debug output trace mechanism and 15608has a larger code and data size. Note that these values will vary 15609depending on the efficiency of the compiler and the compiler 15610options used during generation. 15611 15612 Previous Release (02_07_01) 15613 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 15614 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 15615 Current Release: 15616 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 15617 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 15618 15619 156202) Linux 15621 15622Updated Linux-specific code for core macro and OSL interface 15623changes described above. 15624 15625Improved /proc/acpi/event. It now can be opened only once and has 15626proper poll functionality. 15627 15628Fixed and restructured power management (acpi_bus). 15629 15630Only create /proc "view by type" when devices of that class exist. 15631 15632Fixed "charging/discharging" bug (and others) in acpi_battery. 15633 15634Improved thermal zone code. 15635 15636 156373) ASL Compiler, version X2039: 15638 15639 15640Implemented the new compiler restriction on ASL String hex/octal 15641escapes to non-null, ASCII values. An error results if an invalid 15642value is used. (This will require an ACPI 2.0 specification 15643change.) 15644 15645AML object labels that are output to the optional C and ASM source 15646are now prefixed with both the ACPI table signature and table ID 15647to help guarantee uniqueness within a large BIOS project. 15648 15649 15650---------------------------------------- 15651Summary of changes for this label: 02_01_02 15652 156531) ACPI CA Core Subsystem: 15654 15655ACPI 2.0 support is complete in the entire Core Subsystem and the 15656ASL compiler. All new ACPI 2.0 operators are implemented and all 15657other changes for ACPI 2.0 support are complete. With 15658simultaneous code and data optimizations throughout the subsystem, 15659ACPI 2.0 support has been implemented with almost no additional 15660cost in terms of code and data size. 15661 15662Implemented a new mechanism for allocation of return buffers. If 15663the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 15664be allocated on behalf of the caller. Consolidated all return 15665buffer validation and allocation to a common procedure. Return 15666buffers will be allocated via the primary OSL allocation interface 15667since it appears that a separate pool is not needed by most users. 15668If a separate pool is required for these buffers, the caller can 15669still use the original mechanism and pre-allocate the buffer(s). 15670 15671Implemented support for string operands within the DerefOf 15672operator. 15673 15674Restructured the Hardware and Event managers to be table driven, 15675simplifying the source code and reducing the amount of generated 15676code. 15677 15678Split the common read/write low-level ACPI register bitfield 15679procedure into a separate read and write, simplifying the code 15680considerably. 15681 15682Obsoleted the AcpiOsCallocate OSL interface. This interface was 15683used only a handful of times and didn't have enough critical mass 15684for a separate interface. Replaced with a common calloc procedure 15685in the core. 15686 15687Fixed a reported problem with the GPE number mapping mechanism 15688that allows GPE1 numbers to be non-contiguous with GPE0. 15689Reorganized the GPE information and shrunk a large array that was 15690originally large enough to hold info for all possible GPEs (256) 15691to simply large enough to hold all GPEs up to the largest GPE 15692number on the machine. 15693 15694Fixed a reported problem with resource structure alignment on 64- 15695bit platforms. 15696 15697Changed the AcpiEnableEvent and AcpiDisableEvent external 15698interfaces to not require any flags for the common case of 15699enabling/disabling a GPE. 15700 15701Implemented support to allow a "Notify" on a Processor object. 15702 15703Most TBDs in comments within the source code have been resolved 15704and eliminated. 15705 15706 15707Fixed a problem in the interpreter where a standalone parent 15708prefix (^) was not handled correctly in the interpreter and 15709debugger. 15710 15711Removed obsolete and unnecessary GPE save/restore code. 15712 15713Implemented Field support in the ASL Load operator. This allows a 15714table to be loaded from a named field, in addition to loading a 15715table directly from an Operation Region. 15716 15717Implemented timeout and handle support in the external Global Lock 15718interfaces. 15719 15720Fixed a problem in the AcpiDump utility where pathnames were no 15721longer being generated correctly during the dump of named objects. 15722 15723Modified the AML debugger to give a full display of if/while 15724predicates instead of just one AML opcode at a time. (The 15725predicate can have several nested ASL statements.) The old method 15726was confusing during single stepping. 15727 15728Code and Data Size: Current core subsystem library sizes are shown 15729below. These are the code and data sizes for the acpica.lib 15730produced by the Microsoft Visual C++ 6.0 compiler, and these 15731values do not include any ACPI driver or OSPM code. The debug 15732version of the code includes the debug output trace mechanism and 15733has a larger code and data size. Note that these values will vary 15734depending on the efficiency of the compiler and the compiler 15735options used during generation. 15736 15737 Previous Release (12_18_01) 15738 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 15739 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 15740 Current Release: 15741 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 15742 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 15743 157442) Linux 15745 15746 Implemented fix for PIIX reverse throttling errata (Processor 15747driver) 15748 15749Added new Limit interface (Processor and Thermal drivers) 15750 15751New thermal policy (Thermal driver) 15752 15753Many updates to /proc 15754 15755Battery "low" event support (Battery driver) 15756 15757Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 15758 15759IA32 - IA64 initialization unification, no longer experimental 15760 15761Menuconfig options redesigned 15762 157633) ASL Compiler, version X2037: 15764 15765Implemented several new output features to simplify integration of 15766AML code into firmware: 1) Output the AML in C source code with 15767labels for each named ASL object. The original ASL source code 15768is interleaved as C comments. 2) Output the AML in ASM source code 15769with labels and interleaved ASL source. 3) Output the AML in 15770raw hex table form, in either C or ASM. 15771 15772Implemented support for optional string parameters to the 15773LoadTable operator. 15774 15775Completed support for embedded escape sequences within string 15776literals. The compiler now supports all single character escapes 15777as well as the Octal and Hex escapes. Note: the insertion of a 15778null byte into a string literal (via the hex/octal escape) causes 15779the string to be immediately terminated. A warning is issued. 15780 15781Fixed a problem where incorrect AML was generated for the case 15782where an ASL namepath consists of a single parent prefix ( 15783 15784) with no trailing name segments. 15785 15786The compiler has been successfully generated with a 64-bit C 15787compiler. 15788 15789 15790 15791 15792---------------------------------------- 15793Summary of changes for this label: 12_18_01 15794 157951) Linux 15796 15797Enhanced blacklist with reason and severity fields. Any table's 15798signature may now be used to identify a blacklisted system. 15799 15800Call _PIC control method to inform the firmware which interrupt 15801model the OS is using. Turn on any disabled link devices. 15802 15803Cleaned up busmgr /proc error handling (Andreas Dilger) 15804 15805 2) ACPI CA Core Subsystem: 15806 15807Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 15808while loop) 15809 15810Completed implementation of the ACPI 2.0 "Continue", 15811"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 15812operators. All new ACPI 2.0 operators are now implemented in both 15813the ASL compiler and the AML interpreter. The only remaining ACPI 158142.0 task is support for the String data type in the DerefOf 15815operator. Fixed a problem with AcquireMutex where the status code 15816was lost if the caller had to actually wait for the mutex. 15817 15818Increased the maximum ASL Field size from 64K bits to 4G bits. 15819 15820Completed implementation of the external Global Lock interfaces -- 15821AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 15822Handler parameters were added. 15823 15824Completed another pass at removing warnings and issues when 15825compiling with 64-bit compilers. The code now compiles cleanly 15826with the Intel 64-bit C/C++ compiler. Most notably, the pointer 15827add and subtract (diff) macros have changed considerably. 15828 15829 15830Created and deployed a new ACPI_SIZE type that is 64-bits wide on 1583164-bit platforms, 32-bits on all others. This type is used 15832wherever memory allocation and/or the C sizeof() operator is used, 15833and affects the OSL memory allocation interfaces AcpiOsAllocate 15834and AcpiOsCallocate. 15835 15836Implemented sticky user breakpoints in the AML debugger. 15837 15838Code and Data Size: Current core subsystem library sizes are shown 15839below. These are the code and data sizes for the acpica.lib 15840produced by the Microsoft Visual C++ 6.0 compiler, and these 15841values do not include any ACPI driver or OSPM code. The debug 15842version of the code includes the debug output trace mechanism and 15843has a larger code and data size. Note that these values will vary 15844depending on the efficiency of the compiler and the compiler 15845options used during generation. 15846 15847 Previous Release (12_05_01) 15848 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 15849 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 15850 Current Release: 15851 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 15852 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 15853 15854 3) ASL Compiler, version X2034: 15855 15856Now checks for (and generates an error if detected) the use of a 15857Break or Continue statement without an enclosing While statement. 15858 15859 15860Successfully generated the compiler with the Intel 64-bit C 15861compiler. 15862 15863 ---------------------------------------- 15864Summary of changes for this label: 12_05_01 15865 15866 1) ACPI CA Core Subsystem: 15867 15868The ACPI 2.0 CopyObject operator is fully implemented. This 15869operator creates a new copy of an object (and is also used to 15870bypass the "implicit conversion" mechanism of the Store operator.) 15871 15872The ACPI 2.0 semantics for the SizeOf operator are fully 15873implemented. The change is that performing a SizeOf on a 15874reference object causes an automatic dereference of the object to 15875tha actual value before the size is evaluated. This behavior was 15876undefined in ACPI 1.0. 15877 15878The ACPI 2.0 semantics for the Extended IRQ resource descriptor 15879have been implemented. The interrupt polarity and mode are now 15880independently set. 15881 15882Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 15883appearing in Package objects were not properly converted to 15884integers when the internal Package was converted to an external 15885object (via the AcpiEvaluateObject interface.) 15886 15887Fixed a problem with the namespace object deletion mechanism for 15888objects created by control methods. There were two parts to this 15889problem: 1) Objects created during the initialization phase method 15890parse were not being deleted, and 2) The object owner ID mechanism 15891to track objects was broken. 15892 15893Fixed a problem where the use of the ASL Scope operator within a 15894control method would result in an invalid opcode exception. 15895 15896Fixed a problem introduced in the previous label where the buffer 15897length required for the _PRT structure was not being returned 15898correctly. 15899 15900Code and Data Size: Current core subsystem library sizes are shown 15901below. These are the code and data sizes for the acpica.lib 15902produced by the Microsoft Visual C++ 6.0 compiler, and these 15903values do not include any ACPI driver or OSPM code. The debug 15904version of the code includes the debug output trace mechanism and 15905has a larger code and data size. Note that these values will vary 15906depending on the efficiency of the compiler and the compiler 15907options used during generation. 15908 15909 Previous Release (11_20_01) 15910 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 15911 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 15912 15913 Current Release: 15914 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 15915 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 15916 15917 2) Linux: 15918 15919Updated all files to apply cleanly against 2.4.16. 15920 15921Added basic PCI Interrupt Routing Table (PRT) support for IA32 15922(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 15923version supports both static and dyanmic PRT entries, but dynamic 15924entries are treated as if they were static (not yet 15925reconfigurable). Architecture- specific code to use this data is 15926absent on IA32 but should be available shortly. 15927 15928Changed the initialization sequence to start the ACPI interpreter 15929(acpi_init) prior to initialization of the PCI driver (pci_init) 15930in init/main.c. This ordering is required to support PRT and 15931facilitate other (future) enhancement. A side effect is that the 15932ACPI bus driver and certain device drivers can no longer be loaded 15933as modules. 15934 15935Modified the 'make menuconfig' options to allow PCI Interrupt 15936Routing support to be included without the ACPI Bus and other 15937device drivers. 15938 15939 3) ASL Compiler, version X2033: 15940 15941Fixed some issues with the use of the new CopyObject and 15942DataTableRegion operators. Both are fully functional. 15943 15944 ---------------------------------------- 15945Summary of changes for this label: 11_20_01 15946 15947 20 November 2001. Summary of changes for this release. 15948 15949 1) ACPI CA Core Subsystem: 15950 15951Updated Index support to match ACPI 2.0 semantics. Storing a 15952Integer, String, or Buffer to an Index of a Buffer will store only 15953the least-significant byte of the source to the Indexed buffer 15954byte. Multiple writes are not performed. 15955 15956Fixed a problem where the access type used in an AccessAs ASL 15957operator was not recorded correctly into the field object. 15958 15959Fixed a problem where ASL Event objects were created in a 15960signalled state. Events are now created in an unsignalled state. 15961 15962The internal object cache is now purged after table loading and 15963initialization to reduce the use of dynamic kernel memory -- on 15964the assumption that object use is greatest during the parse phase 15965of the entire table (versus the run-time use of individual control 15966methods.) 15967 15968ACPI 2.0 variable-length packages are now fully operational. 15969 15970Code and Data Size: Code and Data optimizations have permitted new 15971feature development with an actual reduction in the library size. 15972Current core subsystem library sizes are shown below. These are 15973the code and data sizes for the acpica.lib produced by the 15974Microsoft Visual C++ 6.0 compiler, and these values do not include 15975any ACPI driver or OSPM code. The debug version of the code 15976includes the debug output trace mechanism and has a larger code 15977and data size. Note that these values will vary depending on the 15978efficiency of the compiler and the compiler options used during 15979generation. 15980 15981 Previous Release (11_09_01): 15982 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 15983 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 15984 15985 Current Release: 15986 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 15987 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 15988 15989 2) Linux: 15990 15991Enhanced the ACPI boot-time initialization code to allow the use 15992of Local APIC tables for processor enumeration on IA-32, and to 15993pave the way for a fully MPS-free boot (on SMP systems) in the 15994near future. This functionality replaces 15995arch/i386/kernel/acpitables.c, which was introduced in an earlier 159962.4.15-preX release. To enable this feature you must add 15997"acpi_boot=on" to the kernel command line -- see the help entry 15998for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 15999the works... 16000 16001Restructured the configuration options to allow boot-time table 16002parsing support without inclusion of the ACPI Interpreter (and 16003other) code. 16004 16005NOTE: This release does not include fixes for the reported events, 16006power-down, and thermal passive cooling issues (coming soon). 16007 16008 3) ASL Compiler: 16009 16010Added additional typechecking for Fields within restricted access 16011Operation Regions. All fields within EC and CMOS regions must be 16012declared with ByteAcc. All fields withing SMBus regions must be 16013declared with the BufferAcc access type. 16014 16015Fixed a problem where the listing file output of control methods 16016no longer interleaved the actual AML code with the ASL source 16017code. 16018 16019 16020 16021 16022---------------------------------------- 16023Summary of changes for this label: 11_09_01 16024 160251) ACPI CA Core Subsystem: 16026 16027Implemented ACPI 2.0-defined support for writes to fields with a 16028Buffer, String, or Integer source operand that is smaller than the 16029target field. In these cases, the source operand is zero-extended 16030to fill the target field. 16031 16032Fixed a problem where a Field starting bit offset (within the 16033parent operation region) was calculated incorrectly if the 16034 16035alignment of the field differed from the access width. This 16036affected CreateWordField, CreateDwordField, CreateQwordField, and 16037possibly other fields that use the "AccessAny" keyword. 16038 16039Fixed a problem introduced in the 11_02_01 release where indirect 16040stores through method arguments did not operate correctly. 16041 160422) Linux: 16043 16044Implemented boot-time ACPI table parsing support 16045(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 16046facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 16047legacy BIOS interfaces (e.g. MPS) for the configuration of system 16048processors, memory, and interrupts during setup_arch(). Note that 16049this patch does not include the required architecture-specific 16050changes required to apply this information -- subsequent patches 16051will be posted for both IA32 and IA64 to achieve this. 16052 16053Added low-level sleep support for IA32 platforms, courtesy of Pat 16054Mochel. This allows IA32 systems to transition to/from various 16055sleeping states (e.g. S1, S3), although the lack of a centralized 16056driver model and power-manageable drivers will prevent its 16057(successful) use on most systems. 16058 16059Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 16060submenu, unified IA32 and IA64 options, added new "Boot using ACPI 16061tables" option, etc. 16062 16063Increased the default timeout for the EC driver from 1ms to 10ms 16064(1000 cycles of 10us) to try to address AE_TIME errors during EC 16065transactions. 16066 16067 ---------------------------------------- 16068Summary of changes for this label: 11_02_01 16069 160701) ACPI CA Core Subsystem: 16071 16072ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 16073(QWordAcc keyword). All ACPI 2.0 64-bit support is now 16074implemented. 16075 16076OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 16077changes to support ACPI 2.0 Qword field access. Read/Write 16078PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 16079accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 16080the value parameter for the address space handler interface is now 16081an ACPI_INTEGER. OSL implementations of these interfaces must now 16082handle the case where the Width parameter is 64. 16083 16084Index Fields: Fixed a problem where unaligned bit assembly and 16085disassembly for IndexFields was not supported correctly. 16086 16087Index and Bank Fields: Nested Index and Bank Fields are now 16088supported. During field access, a check is performed to ensure 16089that the value written to an Index or Bank register is not out of 16090the range of the register. The Index (or Bank) register is 16091written before each access to the field data. Future support will 16092include allowing individual IndexFields to be wider than the 16093DataRegister width. 16094 16095Fields: Fixed a problem where the AML interpreter was incorrectly 16096attempting to write beyond the end of a Field/OpRegion. This was 16097a boundary case that occurred when a DWORD field was written to a 16098BYTE access OpRegion, forcing multiple writes and causing the 16099interpreter to write one datum too many. 16100 16101Fields: Fixed a problem with Field/OpRegion access where the 16102starting bit address of a field was incorrectly calculated if the 16103current access type was wider than a byte (WordAcc, DwordAcc, or 16104QwordAcc). 16105 16106Fields: Fixed a problem where forward references to individual 16107FieldUnits (individual Field names within a Field definition) were 16108not resolved during the AML table load. 16109 16110Fields: Fixed a problem where forward references from a Field 16111definition to the parent Operation Region definition were not 16112resolved during the AML table load. 16113 16114Fields: Duplicate FieldUnit names within a scope are now detected 16115during AML table load. 16116 16117Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 16118returned an incorrect name for the root node. 16119 16120Code and Data Size: Code and Data optimizations have permitted new 16121feature development with an actual reduction in the library size. 16122Current core subsystem library sizes are shown below. These are 16123the code and data sizes for the acpica.lib produced by the 16124Microsoft Visual C++ 6.0 compiler, and these values do not include 16125any ACPI driver or OSPM code. The debug version of the code 16126includes the debug output trace mechanism and has a larger code 16127and data size. Note that these values will vary depending on the 16128efficiency of the compiler and the compiler options used during 16129generation. 16130 16131 Previous Release (10_18_01): 16132 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 16133 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 16134 16135 Current Release: 16136 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 16137 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 16138 16139 2) Linux: 16140 16141Improved /proc processor output (Pavel Machek) Re-added 16142MODULE_LICENSE("GPL") to all modules. 16143 16144 3) ASL Compiler version X2030: 16145 16146Duplicate FieldUnit names within a scope are now detected and 16147flagged as errors. 16148 16149 4) Documentation: 16150 16151Programmer Reference updated to reflect OSL and address space 16152handler interface changes described above. 16153 16154---------------------------------------- 16155Summary of changes for this label: 10_18_01 16156 16157ACPI CA Core Subsystem: 16158 16159Fixed a problem with the internal object reference count mechanism 16160that occasionally caused premature object deletion. This resolves 16161all of the outstanding problem reports where an object is deleted 16162in the middle of an interpreter evaluation. Although this problem 16163only showed up in rather obscure cases, the solution to the 16164problem involved an adjustment of all reference counts involving 16165objects attached to namespace nodes. 16166 16167Fixed a problem with Field support in the interpreter where 16168writing to an aligned field whose length is an exact multiple (2 16169or greater) of the field access granularity would cause an attempt 16170to write beyond the end of the field. 16171 16172The top level AML opcode execution functions within the 16173interpreter have been renamed with a more meaningful and 16174consistent naming convention. The modules exmonad.c and 16175exdyadic.c were eliminated. New modules are exoparg1.c, 16176exoparg2.c, exoparg3.c, and exoparg6.c. 16177 16178Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 16179 16180Fixed a problem where the AML debugger was causing some internal 16181objects to not be deleted during subsystem termination. 16182 16183Fixed a problem with the external AcpiEvaluateObject interface 16184where the subsystem would fault if the named object to be 16185evaluated refered to a constant such as Zero, Ones, etc. 16186 16187Fixed a problem with IndexFields and BankFields where the 16188subsystem would fault if the index, data, or bank registers were 16189not defined in the same scope as the field itself. 16190 16191Added printf format string checking for compilers that support 16192this feature. Corrected more than 50 instances of issues with 16193format specifiers within invocations of ACPI_DEBUG_PRINT 16194throughout the core subsystem code. 16195 16196The ASL "Revision" operator now returns the ACPI support level 16197implemented in the core - the value "2" since the ACPI 2.0 support 16198is more than 50% implemented. 16199 16200Enhanced the output of the AML debugger "dump namespace" command 16201to output in a more human-readable form. 16202 16203Current core subsystem library code sizes are shown below. These 16204 16205are the code and data sizes for the acpica.lib produced by the 16206Microsoft Visual C++ 6.0 compiler, and these values do not include 16207any ACPI driver or OSPM code. The debug version of the code 16208includes the full debug trace mechanism -- leading to a much 16209 16210larger code and data size. Note that these values will vary 16211depending on the efficiency of the compiler and the compiler 16212options used during generation. 16213 16214 Previous Label (09_20_01): 16215 Non-Debug Version: 65K Code, 5K Data, 70K Total 16216 Debug Version: 138K Code, 58K Data, 196K Total 16217 16218 This Label: 16219 16220 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 16221 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 16222 16223Linux: 16224 16225Implemented a "Bad BIOS Blacklist" to track machines that have 16226known ASL/AML problems. 16227 16228Enhanced the /proc interface for the thermal zone driver and added 16229support for _HOT (the critical suspend trip point). The 'info' 16230file now includes threshold/policy information, and allows setting 16231of _SCP (cooling preference) and _TZP (polling frequency) values 16232to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 16233frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 16234preference to the passive/quiet mode (if supported by the ASL). 16235 16236Implemented a workaround for a gcc bug that resuted in an OOPs 16237when loading the control method battery driver. 16238 16239 ---------------------------------------- 16240Summary of changes for this label: 09_20_01 16241 16242 ACPI CA Core Subsystem: 16243 16244The AcpiEnableEvent and AcpiDisableEvent interfaces have been 16245modified to allow individual GPE levels to be flagged as wake- 16246enabled (i.e., these GPEs are to remain enabled when the platform 16247sleeps.) 16248 16249The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 16250support wake-enabled GPEs. This means that upon entering the 16251sleep state, all GPEs that are not wake-enabled are disabled. 16252When leaving the sleep state, these GPEs are reenabled. 16253 16254A local double-precision divide/modulo module has been added to 16255enhance portability to OS kernels where a 64-bit math library is 16256not available. The new module is "utmath.c". 16257 16258Several optimizations have been made to reduce the use of CPU 16259stack. Originally over 2K, the maximum stack usage is now below 162602K at 1860 bytes (1.82k) 16261 16262Fixed a problem with the AcpiGetFirmwareTable interface where the 16263root table pointer was not mapped into a logical address properly. 16264 16265Fixed a problem where a NULL pointer was being dereferenced in the 16266interpreter code for the ASL Notify operator. 16267 16268Fixed a problem where the use of the ASL Revision operator 16269returned an error. This operator now returns the current version 16270of the ACPI CA core subsystem. 16271 16272Fixed a problem where objects passed as control method parameters 16273to AcpiEvaluateObject were always deleted at method termination. 16274However, these objects may end up being stored into the namespace 16275by the called method. The object reference count mechanism was 16276applied to these objects instead of a force delete. 16277 16278Fixed a problem where static strings or buffers (contained in the 16279AML code) that are declared as package elements within the ASL 16280code could cause a fault because the interpreter would attempt to 16281delete them. These objects are now marked with the "static 16282object" flag to prevent any attempt to delete them. 16283 16284Implemented an interpreter optimization to use operands directly 16285from the state object instead of extracting the operands to local 16286variables. This reduces stack use and code size, and improves 16287performance. 16288 16289The module exxface.c was eliminated as it was an unnecessary extra 16290layer of code. 16291 16292Current core subsystem library code sizes are shown below. These 16293are the code and data sizes for the acpica.lib produced by the 16294Microsoft Visual C++ 6.0 compiler, and these values do not include 16295any ACPI driver or OSPM code. The debug version of the code 16296includes the full debug trace mechanism -- leading to a much 16297larger code and data size. Note that these values will vary 16298depending on the efficiency of the compiler and the compiler 16299options used during generation. 16300 16301 Non-Debug Version: 65K Code, 5K Data, 70K Total 16302(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 16303Total (Previously 195K) 16304 16305Linux: 16306 16307Support for ACPI 2.0 64-bit integers has been added. All ACPI 16308Integer objects are now 64 bits wide 16309 16310All Acpi data types and structures are now in lower case. Only 16311Acpi macros are upper case for differentiation. 16312 16313 Documentation: 16314 16315Changes to the external interfaces as described above. 16316 16317 ---------------------------------------- 16318Summary of changes for this label: 08_31_01 16319 16320 ACPI CA Core Subsystem: 16321 16322A bug with interpreter implementation of the ASL Divide operator 16323was found and fixed. The implicit function return value (not the 16324explicit store operands) was returning the remainder instead of 16325the quotient. This was a longstanding bug and it fixes several 16326known outstanding issues on various platforms. 16327 16328The ACPI_DEBUG_PRINT and function trace entry/exit macros have 16329been further optimized for size. There are 700 invocations of the 16330DEBUG_PRINT macro alone, so each optimization reduces the size of 16331the debug version of the subsystem significantly. 16332 16333A stack trace mechanism has been implemented. The maximum stack 16334usage is about 2K on 32-bit platforms. The debugger command "stat 16335stack" will display the current maximum stack usage. 16336 16337All public symbols and global variables within the subsystem are 16338now prefixed with the string "Acpi". This keeps all of the 16339symbols grouped together in a kernel map, and avoids conflicts 16340with other kernel subsystems. 16341 16342Most of the internal fixed lookup tables have been moved into the 16343code segment via the const operator. 16344 16345Several enhancements have been made to the interpreter to both 16346reduce the code size and improve performance. 16347 16348Current core subsystem library code sizes are shown below. These 16349are the code and data sizes for the acpica.lib produced by the 16350Microsoft Visual C++ 6.0 compiler, and these values do not include 16351any ACPI driver or OSPM code. The debug version of the code 16352includes the full debug trace mechanism which contains over 700 16353invocations of the DEBUG_PRINT macro, 500 function entry macro 16354invocations, and over 900 function exit macro invocations -- 16355leading to a much larger code and data size. Note that these 16356values will vary depending on the efficiency of the compiler and 16357the compiler options used during generation. 16358 16359 Non-Debug Version: 64K Code, 5K Data, 69K Total 16360Debug Version: 137K Code, 58K Data, 195K Total 16361 16362 Linux: 16363 16364Implemented wbinvd() macro, pending a kernel-wide definition. 16365 16366Fixed /proc/acpi/event to handle poll() and short reads. 16367 16368 ASL Compiler, version X2026: 16369 16370Fixed a problem introduced in the previous label where the AML 16371 16372code emitted for package objects produced packages with zero 16373length. 16374 16375 ---------------------------------------- 16376Summary of changes for this label: 08_16_01 16377 16378ACPI CA Core Subsystem: 16379 16380The following ACPI 2.0 ASL operators have been implemented in the 16381AML interpreter (These are already supported by the Intel ASL 16382compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 16383ToBuffer. Support for 64-bit AML constants is implemented in the 16384AML parser, debugger, and disassembler. 16385 16386The internal memory tracking mechanism (leak detection code) has 16387been upgraded to reduce the memory overhead (a separate tracking 16388block is no longer allocated for each memory allocation), and now 16389supports all of the internal object caches. 16390 16391The data structures and code for the internal object caches have 16392been coelesced and optimized so that there is a single cache and 16393memory list data structure and a single group of functions that 16394implement generic cache management. This has reduced the code 16395size in both the debug and release versions of the subsystem. 16396 16397The DEBUG_PRINT macro(s) have been optimized for size and replaced 16398by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 16399different, because it generates a single call to an internal 16400function. This results in a savings of about 90 bytes per 16401invocation, resulting in an overall code and data savings of about 1640216% in the debug version of the subsystem. 16403 16404 Linux: 16405 16406Fixed C3 disk corruption problems and re-enabled C3 on supporting 16407machines. 16408 16409Integrated low-level sleep code by Patrick Mochel. 16410 16411Further tweaked source code Linuxization. 16412 16413Other minor fixes. 16414 16415 ASL Compiler: 16416 16417Support for ACPI 2.0 variable length packages is fixed/completed. 16418 16419Fixed a problem where the optional length parameter for the ACPI 164202.0 ToString operator. 16421 16422Fixed multiple extraneous error messages when a syntax error is 16423detected within the declaration line of a control method. 16424 16425 ---------------------------------------- 16426Summary of changes for this label: 07_17_01 16427 16428ACPI CA Core Subsystem: 16429 16430Added a new interface named AcpiGetFirmwareTable to obtain any 16431ACPI table via the ACPI signature. The interface can be called at 16432any time during kernel initialization, even before the kernel 16433virtual memory manager is initialized and paging is enabled. This 16434allows kernel subsystems to obtain ACPI tables very early, even 16435before the ACPI CA subsystem is initialized. 16436 16437Fixed a problem where Fields defined with the AnyAcc attribute 16438could be resolved to the incorrect address under the following 16439conditions: 1) the field width is larger than 8 bits and 2) the 16440parent operation region is not defined on a DWORD boundary. 16441 16442Fixed a problem where the interpreter is not being locked during 16443namespace initialization (during execution of the _INI control 16444methods), causing an error when an attempt is made to release it 16445later. 16446 16447ACPI 2.0 support in the AML Interpreter has begun and will be 16448ongoing throughout the rest of this year. In this label, The Mod 16449operator is implemented. 16450 16451Added a new data type to contain full PCI addresses named 16452ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 16453and Function values. 16454 16455 Linux: 16456 16457Enhanced the Linux version of the source code to change most 16458capitalized ACPI type names to lowercase. For example, all 16459instances of ACPI_STATUS are changed to acpi_status. This will 16460result in a large diff, but the change is strictly cosmetic and 16461aligns the CA code closer to the Linux coding standard. 16462 16463OSL Interfaces: 16464 16465The interfaces to the PCI configuration space have been changed to 16466add the PCI Segment number and to split the single 32-bit combined 16467DeviceFunction field into two 16-bit fields. This was 16468accomplished by moving the four values that define an address in 16469PCI configuration space (segment, bus, device, and function) to 16470the new ACPI_PCI_ID structure. 16471 16472The changes to the PCI configuration space interfaces led to a 16473reexamination of the complete set of address space access 16474interfaces for PCI, I/O, and Memory. The previously existing 18 16475interfaces have proven difficult to maintain (any small change 16476must be propagated across at least 6 interfaces) and do not easily 16477allow for future expansion to 64 bits if necessary. Also, on some 16478systems, it would not be appropriate to demultiplex the access 16479width (8, 16, 32,or 64) before calling the OSL if the 16480corresponding native OS interfaces contain a similar access width 16481parameter. For these reasons, the 18 address space interfaces 16482have been replaced by these 6 new ones: 16483 16484AcpiOsReadPciConfiguration 16485AcpiOsWritePciConfiguration 16486AcpiOsReadMemory 16487AcpiOsWriteMemory 16488AcpiOsReadPort 16489AcpiOsWritePort 16490 16491Added a new interface named AcpiOsGetRootPointer to allow the OSL 16492to perform the platform and/or OS-specific actions necessary to 16493obtain the ACPI RSDP table pointer. On IA-32 platforms, this 16494interface will simply call down to the CA core to perform the low- 16495memory search for the table. On IA-64, the RSDP is obtained from 16496EFI. Migrating this interface to the OSL allows the CA core to 16497 16498remain OS and platform independent. 16499 16500Added a new interface named AcpiOsSignal to provide a generic 16501"function code and pointer" interface for various miscellaneous 16502signals and notifications that must be made to the host OS. The 16503first such signals are intended to support the ASL Fatal and 16504Breakpoint operators. In the latter case, the AcpiOsBreakpoint 16505interface has been obsoleted. 16506 16507The definition of the AcpiFormatException interface has been 16508changed to simplify its use. The caller no longer must supply a 16509buffer to the call; A pointer to a const string is now returned 16510directly. This allows the call to be easily used in printf 16511statements, etc. since the caller does not have to manage a local 16512buffer. 16513 16514 16515 ASL Compiler, Version X2025: 16516 16517The ACPI 2.0 Switch/Case/Default operators have been implemented 16518and are fully functional. They will work with all ACPI 1.0 16519interpreters, since the operators are simply translated to If/Else 16520pairs. 16521 16522The ACPI 2.0 ElseIf operator is implemented and will also work 16523with 1.0 interpreters, for the same reason. 16524 16525Implemented support for ACPI 2.0 variable-length packages. These 16526packages have a separate opcode, and their size is determined by 16527the interpreter at run-time. 16528 16529Documentation The ACPI CA Programmer Reference has been updated to 16530reflect the new interfaces and changes to existing interfaces. 16531 16532 ------------------------------------------ 16533Summary of changes for this label: 06_15_01 16534 16535 ACPI CA Core Subsystem: 16536 16537Fixed a problem where a DWORD-accessed field within a Buffer 16538object would get its byte address inadvertently rounded down to 16539the nearest DWORD. Buffers are always Byte-accessible. 16540 16541 ASL Compiler, version X2024: 16542 16543Fixed a problem where the Switch() operator would either fault or 16544hang the compiler. Note however, that the AML code for this ACPI 165452.0 operator is not yet implemented. 16546 16547Compiler uses the new AcpiOsGetTimer interface to obtain compile 16548timings. 16549 16550Implementation of the CreateField operator automatically converts 16551a reference to a named field within a resource descriptor from a 16552byte offset to a bit offset if required. 16553 16554Added some missing named fields from the resource descriptor 16555support. These are the names that are automatically created by the 16556compiler to reference fields within a descriptor. They are only 16557valid at compile time and are not passed through to the AML 16558interpreter. 16559 16560Resource descriptor named fields are now typed as Integers and 16561subject to compile-time typechecking when used in expressions. 16562 16563 ------------------------------------------ 16564Summary of changes for this label: 05_18_01 16565 16566 ACPI CA Core Subsystem: 16567 16568Fixed a couple of problems in the Field support code where bits 16569from adjacent fields could be returned along with the proper field 16570bits. Restructured the field support code to improve performance, 16571readability and maintainability. 16572 16573New DEBUG_PRINTP macro automatically inserts the procedure name 16574into the output, saving hundreds of copies of procedure name 16575strings within the source, shrinking the memory footprint of the 16576debug version of the core subsystem. 16577 16578 Source Code Structure: 16579 16580The source code directory tree was restructured to reflect the 16581current organization of the component architecture. Some files 16582and directories have been moved and/or renamed. 16583 16584 Linux: 16585 16586Fixed leaking kacpidpc processes. 16587 16588Fixed queueing event data even when /proc/acpi/event is not 16589opened. 16590 16591 ASL Compiler, version X2020: 16592 16593Memory allocation performance enhancement - over 24X compile time 16594improvement on large ASL files. Parse nodes and namestring 16595buffers are now allocated from a large internal compiler buffer. 16596 16597The temporary .SRC file is deleted unless the "-s" option is 16598specified 16599 16600The "-d" debug output option now sends all output to the .DBG file 16601instead of the console. 16602 16603"External" second parameter is now optional 16604 16605"ElseIf" syntax now properly allows the predicate 16606 16607Last operand to "Load" now recognized as a Target operand 16608 16609Debug object can now be used anywhere as a normal object. 16610 16611ResourceTemplate now returns an object of type BUFFER 16612 16613EISAID now returns an object of type INTEGER 16614 16615"Index" now works with a STRING operand 16616 16617"LoadTable" now accepts optional parameters 16618 16619"ToString" length parameter is now optional 16620 16621"Interrupt (ResourceType," parse error fixed. 16622 16623"Register" with a user-defined region space parse error fixed 16624 16625Escaped backslash at the end of a string ("\\") scan/parse error 16626fixed 16627 16628"Revision" is now an object of type INTEGER. 16629 16630 16631 16632------------------------------------------ 16633Summary of changes for this label: 05_02_01 16634 16635Linux: 16636 16637/proc/acpi/event now blocks properly. 16638 16639Removed /proc/sys/acpi. You can still dump your DSDT from 16640/proc/acpi/dsdt. 16641 16642 ACPI CA Core Subsystem: 16643 16644Fixed a problem introduced in the previous label where some of the 16645"small" resource descriptor types were not recognized. 16646 16647Improved error messages for the case where an ASL Field is outside 16648the range of the parent operation region. 16649 16650 ASL Compiler, version X2018: 16651 16652 16653Added error detection for ASL Fields that extend beyond the length 16654of the parent operation region (only if the length of the region 16655is known at compile time.) This includes fields that have a 16656minimum access width that is smaller than the parent region, and 16657individual field units that are partially or entirely beyond the 16658extent of the parent. 16659 16660 16661 16662------------------------------------------ 16663Summary of changes for this label: 04_27_01 16664 16665 ACPI CA Core Subsystem: 16666 16667Fixed a problem where the namespace mutex could be released at the 16668wrong time during execution of AcpiRemoveAddressSpaceHandler. 16669 16670Added optional thread ID output for debug traces, to simplify 16671debugging of multiple threads. Added context switch notification 16672when the debug code realizes that a different thread is now 16673executing ACPI code. 16674 16675Some additional external data types have been prefixed with the 16676string "ACPI_" for consistency. This may effect existing code. 16677The data types affected are the external callback typedefs - e.g., 16678 16679WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 16680 16681 Linux: 16682 16683Fixed an issue with the OSL semaphore implementation where a 16684thread was waking up with an error from receiving a SIGCHLD 16685signal. 16686 16687Linux version of ACPI CA now uses the system C library for string 16688manipulation routines instead of a local implementation. 16689 16690Cleaned up comments and removed TBDs. 16691 16692 ASL Compiler, version X2017: 16693 16694Enhanced error detection and reporting for all file I/O 16695operations. 16696 16697 Documentation: 16698 16699Programmer Reference updated to version 1.06. 16700 16701 16702 16703------------------------------------------ 16704Summary of changes for this label: 04_13_01 16705 16706 ACPI CA Core Subsystem: 16707 16708Restructured support for BufferFields and RegionFields. 16709BankFields support is now fully operational. All known 32-bit 16710limitations on field sizes have been removed. Both BufferFields 16711and (Operation) RegionFields are now supported by the same field 16712management code. 16713 16714Resource support now supports QWORD address and IO resources. The 1671516/32/64 bit address structures and the Extended IRQ structure 16716have been changed to properly handle Source Resource strings. 16717 16718A ThreadId of -1 is now used to indicate a "mutex not acquired" 16719condition internally and must never be returned by AcpiOsThreadId. 16720This reserved value was changed from 0 since Unix systems allow a 16721thread ID of 0. 16722 16723Linux: 16724 16725Driver code reorganized to enhance portability 16726 16727Added a kernel configuration option to control ACPI_DEBUG 16728 16729Fixed the EC driver to honor _GLK. 16730 16731ASL Compiler, version X2016: 16732 16733Fixed support for the "FixedHw" keyword. Previously, the FixedHw 16734address space was set to 0, not 0x7f as it should be. 16735 16736 ------------------------------------------ 16737Summary of changes for this label: 03_13_01 16738 16739 ACPI CA Core Subsystem: 16740 16741During ACPI initialization, the _SB_._INI method is now run if 16742present. 16743 16744Notify handler fix - notifies are deferred until the parent method 16745completes execution. This fixes the "mutex already acquired" 16746issue seen occasionally. 16747 16748Part of the "implicit conversion" rules in ACPI 2.0 have been 16749found to cause compatibility problems with existing ASL/AML. The 16750convert "result-to-target-type" implementation has been removed 16751for stores to method Args and Locals. Source operand conversion 16752is still fully implemented. Possible changes to ACPI 2.0 16753specification pending. 16754 16755Fix to AcpiRsCalculatePciRoutingTableLength to return correct 16756length. 16757 16758Fix for compiler warnings for 64-bit compiles. 16759 16760 Linux: 16761 16762/proc output aligned for easier parsing. 16763 16764Release-version compile problem fixed. 16765 16766New kernel configuration options documented in Configure.help. 16767 16768IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 16769context" message. 16770 16771 OSPM: 16772 16773Power resource driver integrated with bus manager. 16774 16775Fixed kernel fault during active cooling for thermal zones. 16776 16777Source Code: 16778 16779The source code tree has been restructured. 16780 16781 16782 16783------------------------------------------ 16784Summary of changes for this label: 03_02_01 16785 16786 Linux OS Services Layer (OSL): 16787 16788Major revision of all Linux-specific code. 16789 16790Modularized all ACPI-specific drivers. 16791 16792Added new thermal zone and power resource drivers. 16793 16794Revamped /proc interface (new functionality is under /proc/acpi). 16795 16796New kernel configuration options. 16797 16798 Linux known issues: 16799 16800New kernel configuration options not documented in Configure.help 16801yet. 16802 16803 16804Module dependencies not currently implemented. If used, they 16805should be loaded in this order: busmgr, power, ec, system, 16806processor, battery, ac_adapter, button, thermal. 16807 16808Modules will not load if CONFIG_MODVERSION is set. 16809 16810IBM 600E - entering S5 may reboot instead of shutting down. 16811 16812IBM 600E - Sleep button may generate "Invalid <NULL> context" 16813message. 16814 16815Some systems may fail with "execution mutex already acquired" 16816message. 16817 16818 ACPI CA Core Subsystem: 16819 16820Added a new OSL Interface, AcpiOsGetThreadId. This was required 16821for the deadlock detection code. Defined to return a non-zero, 32- 16822bit thread ID for the currently executing thread. May be a non- 16823zero constant integer on single-thread systems. 16824 16825Implemented deadlock detection for internal subsystem mutexes. We 16826may add conditional compilation for this code (debug only) later. 16827 16828ASL/AML Mutex object semantics are now fully supported. This 16829includes multiple acquires/releases by owner and support for the 16830 16831Mutex SyncLevel parameter. 16832 16833A new "Force Release" mechanism automatically frees all ASL 16834Mutexes that have been acquired but not released when a thread 16835exits the interpreter. This forces conformance to the ACPI spec 16836("All mutexes must be released when an invocation exits") and 16837prevents deadlocked ASL threads. This mechanism can be expanded 16838(later) to monitor other resource acquisitions if OEM ASL code 16839continues to misbehave (which it will). 16840 16841Several new ACPI exception codes have been added for the Mutex 16842support. 16843 16844Recursive method calls are now allowed and supported (the ACPI 16845spec does in fact allow recursive method calls.) The number of 16846recursive calls is subject to the restrictions imposed by the 16847SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 16848parameter. 16849 16850Implemented support for the SyncLevel parameter for control 16851methods (ACPI 2.0 feature) 16852 16853Fixed a deadlock problem when multiple threads attempted to use 16854the interpreter. 16855 16856Fixed a problem where the string length of a String package 16857element was not always set in a package returned from 16858AcpiEvaluateObject. 16859 16860Fixed a problem where the length of a String package element was 16861not always included in the length of the overall package returned 16862from AcpiEvaluateObject. 16863 16864Added external interfaces (Acpi*) to the ACPI debug memory 16865manager. This manager keeps a list of all outstanding 16866allocations, and can therefore detect memory leaks and attempts to 16867free memory blocks more than once. Useful for code such as the 16868power manager, etc. May not be appropriate for device drivers. 16869Performance with the debug code enabled is slow. 16870 16871The ACPI Global Lock is now an optional hardware element. 16872 16873 ASL Compiler Version X2015: 16874 16875Integrated changes to allow the compiler to be generated on 16876multiple platforms. 16877 16878Linux makefile added to generate the compiler on Linux 16879 16880 Source Code: 16881 16882All platform-specific headers have been moved to their own 16883subdirectory, Include/Platform. 16884 16885New source file added, Interpreter/ammutex.c 16886 16887New header file, Include/acstruct.h 16888 16889 Documentation: 16890 16891The programmer reference has been updated for the following new 16892interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 16893 16894 ------------------------------------------ 16895Summary of changes for this label: 02_08_01 16896 16897Core ACPI CA Subsystem: Fixed a problem where an error was 16898incorrectly returned if the return resource buffer was larger than 16899the actual data (in the resource interfaces). 16900 16901References to named objects within packages are resolved to the 16902 16903full pathname string before packages are returned directly (via 16904the AcpiEvaluateObject interface) or indirectly via the resource 16905interfaces. 16906 16907Linux OS Services Layer (OSL): 16908 16909Improved /proc battery interface. 16910 16911 16912Added C-state debugging output and other miscellaneous fixes. 16913 16914ASL Compiler Version X2014: 16915 16916All defined method arguments can now be used as local variables, 16917including the ones that are not actually passed in as parameters. 16918The compiler tracks initialization of the arguments and issues an 16919exception if they are used without prior assignment (just like 16920locals). 16921 16922The -o option now specifies a filename prefix that is used for all 16923output files, including the AML output file. Otherwise, the 16924default behavior is as follows: 1) the AML goes to the file 16925specified in the DSDT. 2) all other output files use the input 16926source filename as the base. 16927 16928 ------------------------------------------ 16929Summary of changes for this label: 01_25_01 16930 16931Core ACPI CA Subsystem: Restructured the implementation of object 16932store support within the interpreter. This includes support for 16933the Store operator as well as any ASL operators that include a 16934target operand. 16935 16936Partially implemented support for Implicit Result-to-Target 16937conversion. This is when a result object is converted on the fly 16938to the type of an existing target object. Completion of this 16939support is pending further analysis of the ACPI specification 16940concerning this matter. 16941 16942CPU-specific code has been removed from the subsystem (hardware 16943directory). 16944 16945New Power Management Timer functions added 16946 16947Linux OS Services Layer (OSL): Moved system state transition code 16948to the core, fixed it, and modified Linux OSL accordingly. 16949 16950Fixed C2 and C3 latency calculations. 16951 16952 16953We no longer use the compilation date for the version message on 16954initialization, but retrieve the version from AcpiGetSystemInfo(). 16955 16956Incorporated for fix Sony VAIO machines. 16957 16958Documentation: The Programmer Reference has been updated and 16959reformatted. 16960 16961 16962ASL Compiler: Version X2013: Fixed a problem where the line 16963numbering and error reporting could get out of sync in the 16964presence of multiple include files. 16965 16966 ------------------------------------------ 16967Summary of changes for this label: 01_15_01 16968 16969Core ACPI CA Subsystem: 16970 16971Implemented support for type conversions in the execution of the 16972ASL Concatenate operator (The second operand is converted to 16973match the type of the first operand before concatenation.) 16974 16975Support for implicit source operand conversion is partially 16976implemented. The ASL source operand types Integer, Buffer, and 16977String are freely interchangeable for most ASL operators and are 16978converted by the interpreter on the fly as required. Implicit 16979Target operand conversion (where the result is converted to the 16980target type before storing) is not yet implemented. 16981 16982Support for 32-bit and 64-bit BCD integers is implemented. 16983 16984Problem fixed where a field read on an aligned field could cause a 16985read past the end of the field. 16986 16987New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 16988does not return a value, but the caller expects one. (The ASL 16989compiler flags this as a warning.) 16990 16991ASL Compiler: 16992 16993Version X2011: 169941. Static typechecking of all operands is implemented. This 16995prevents the use of invalid objects (such as using a Package where 16996an Integer is required) at compile time instead of at interpreter 16997run-time. 169982. The ASL source line is printed with ALL errors and warnings. 169993. Bug fix for source EOF without final linefeed. 170004. Debug option is split into a parse trace and a namespace trace. 170015. Namespace output option (-n) includes initial values for 17002integers and strings. 170036. Parse-only option added for quick syntax checking. 170047. Compiler checks for duplicate ACPI name declarations 17005 17006Version X2012: 170071. Relaxed typechecking to allow interchangeability between 17008strings, integers, and buffers. These types are now converted by 17009the interpreter at runtime. 170102. Compiler reports time taken by each internal subsystem in the 17011debug output file. 17012 17013 17014 ------------------------------------------ 17015Summary of changes for this label: 12_14_00 17016 17017ASL Compiler: 17018 17019This is the first official release of the compiler. Since the 17020compiler requires elements of the Core Subsystem, this label 17021synchronizes everything. 17022 17023------------------------------------------ 17024Summary of changes for this label: 12_08_00 17025 17026 17027Fixed a problem where named references within the ASL definition 17028of both OperationRegions and CreateXXXFields did not work 17029properly. The symptom was an AE_AML_OPERAND_TYPE during 17030initialization of the region/field. This is similar (but not 17031related internally) to the problem that was fixed in the last 17032label. 17033 17034Implemented both 32-bit and 64-bit support for the BCD ASL 17035functions ToBCD and FromBCD. 17036 17037Updated all legal headers to include "2000" in the copyright 17038years. 17039 17040 ------------------------------------------ 17041Summary of changes for this label: 12_01_00 17042 17043Fixed a problem where method invocations within the ASL definition 17044of both OperationRegions and CreateXXXFields did not work 17045properly. The symptom was an AE_AML_OPERAND_TYPE during 17046initialization of the region/field: 17047 17048 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 17049[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 17050(0x3005) 17051 17052Fixed a problem where operators with more than one nested 17053subexpression would fail. The symptoms were varied, by mostly 17054AE_AML_OPERAND_TYPE errors. This was actually a rather serious 17055problem that has gone unnoticed until now. 17056 17057 Subtract (Add (1,2), Multiply (3,4)) 17058 17059Fixed a problem where AcpiGetHandle didn't quite get fixed in the 17060previous build (The prefix part of a relative path was handled 17061incorrectly). 17062 17063Fixed a problem where Operation Region initialization failed if 17064the operation region name was a "namepath" instead of a simple 17065"nameseg". Symptom was an AE_NO_OPERAND error. 17066 17067Fixed a problem where an assignment to a local variable via the 17068indirect RefOf mechanism only worked for the first such 17069assignment. Subsequent assignments were ignored. 17070 17071 ------------------------------------------ 17072Summary of changes for this label: 11_15_00 17073 17074ACPI 2.0 table support with backwards support for ACPI 1.0 and the 170750.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 17076the AML interpreter does NOT have support for the new 2.0 ASL 17077grammar terms at this time. 17078 17079All ACPI hardware access is via the GAS structures in the ACPI 2.0 17080FADT. 17081 17082All physical memory addresses across all platforms are now 64 bits 17083wide. Logical address width remains dependent on the platform 17084(i.e., "void *"). 17085 17086AcpiOsMapMemory interface changed to a 64-bit physical address. 17087 17088The AML interpreter integer size is now 64 bits, as per the ACPI 170892.0 specification. 17090 17091For backwards compatibility with ACPI 1.0, ACPI tables with a 17092revision number less than 2 use 32-bit integers only. 17093 17094Fixed a problem where the evaluation of OpRegion operands did not 17095always resolve them to numbers properly. 17096 17097------------------------------------------ 17098Summary of changes for this label: 10_20_00 17099 17100Fix for CBN_._STA issue. This fix will allow correct access to 17101CBN_ OpRegions when the _STA returns 0x8. 17102 17103Support to convert ACPI constants (Ones, Zeros, One) to actual 17104values before a package object is returned 17105 17106Fix for method call as predicate to if/while construct causing 17107incorrect if/while behavior 17108 17109Fix for Else block package lengths sometimes calculated wrong (if 17110block > 63 bytes) 17111 17112Fix for Processor object length field, was always zero 17113 17114Table load abort if FACP sanity check fails 17115 17116Fix for problem with Scope(name) if name already exists 17117 17118Warning emitted if a named object referenced cannot be found 17119(resolved) during method execution. 17120 17121 17122 17123 17124 17125------------------------------------------ 17126Summary of changes for this label: 9_29_00 17127 17128New table initialization interfaces: AcpiInitializeSubsystem no 17129longer has any parameters AcpiFindRootPointer - Find the RSDP (if 17130necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 17131>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 17132AcpiLoadTables 17133 17134Note: These interface changes require changes to all existing OSDs 17135 17136The PCI_Config default address space handler is always installed 17137at the root namespace object. 17138 17139------------------------------------------- 17140Summary of changes for this label: 09_15_00 17141 17142The new initialization architecture is implemented. New 17143interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 17144AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 17145 17146(Namespace is automatically loaded when a table is loaded) 17147 17148The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1714952 bytes to 32 bytes. There is usually one of these for every 17150namespace object, so the memory savings is significant. 17151 17152Implemented just-in-time evaluation of the CreateField operators. 17153 17154Bug fixes for IA-64 support have been integrated. 17155 17156Additional code review comments have been implemented 17157 17158The so-called "third pass parse" has been replaced by a final walk 17159through the namespace to initialize all operation regions (address 17160spaces) and fields that have not yet been initialized during the 17161execution of the various _INI and REG methods. 17162 17163New file - namespace/nsinit.c 17164 17165------------------------------------------- 17166Summary of changes for this label: 09_01_00 17167 17168Namespace manager data structures have been reworked to change the 17169primary object from a table to a single object. This has 17170resulted in dynamic memory savings of 3X within the namespace and 171712X overall in the ACPI CA subsystem. 17172 17173Fixed problem where the call to AcpiEvFindPciRootBuses was 17174inadvertently left commented out. 17175 17176Reduced the warning count when generating the source with the GCC 17177compiler. 17178 17179Revision numbers added to each module header showing the 17180SourceSafe version of the file. Please refer to this version 17181number when giving us feedback or comments on individual modules. 17182 17183The main object types within the subsystem have been renamed to 17184clarify their purpose: 17185 17186ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 17187ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 17188ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 17189 17190NOTE: no changes to the initialization sequence are included in 17191this label. 17192 17193------------------------------------------- 17194Summary of changes for this label: 08_23_00 17195 17196Fixed problem where TerminateControlMethod was being called 17197multiple times per method 17198 17199Fixed debugger problem where single stepping caused a semaphore to 17200be oversignalled 17201 17202Improved performance through additional parse object caching - 17203added ACPI_EXTENDED_OP type 17204 17205------------------------------------------- 17206Summary of changes for this label: 08_10_00 17207 17208Parser/Interpreter integration: Eliminated the creation of 17209complete parse trees for ACPI tables and control methods. 17210Instead, parse subtrees are created and then deleted as soon as 17211they are processed (Either entered into the namespace or executed 17212by the interpreter). This reduces the use of dynamic kernel 17213memory significantly. (about 10X) 17214 17215Exception codes broken into classes and renumbered. Be sure to 17216recompile all code that includes acexcep.h. Hopefully we won't 17217have to renumber the codes again now that they are split into 17218classes (environment, programmer, AML code, ACPI table, and 17219internal). 17220 17221Fixed some additional alignment issues in the Resource Manager 17222subcomponent 17223 17224Implemented semaphore tracking in the AcpiExec utility, and fixed 17225several places where mutexes/semaphores were being unlocked 17226without a corresponding lock operation. There are no known 17227semaphore or mutex "leaks" at this time. 17228 17229Fixed the case where an ASL Return operator is used to return an 17230unnamed package. 17231 17232------------------------------------------- 17233Summary of changes for this label: 07_28_00 17234 17235Fixed a problem with the way addresses were calculated in 17236AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 17237manifested itself when a Field was created with WordAccess or 17238DwordAccess, but the field unit defined within the Field was less 17239 17240than a Word or Dword. 17241 17242Fixed a problem in AmlDumpOperands() module's loop to pull 17243operands off of the operand stack to display information. The 17244problem manifested itself as a TLB error on 64-bit systems when 17245accessing an operand stack with two or more operands. 17246 17247Fixed a problem with the PCI configuration space handlers where 17248context was getting confused between accesses. This required a 17249change to the generic address space handler and address space 17250setup definitions. Handlers now get both a global handler context 17251(this is the one passed in by the user when executing 17252AcpiInstallAddressSpaceHandler() and a specific region context 17253that is unique to each region (For example, the _ADR, _SEG and 17254_BBN values associated with a specific region). The generic 17255function definitions have changed to the following: 17256 17257typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 17258UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 17259*HandlerContext, // This used to be void *Context void 17260*RegionContext); // This is an additional parameter 17261 17262typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 17263RegionHandle, UINT32 Function, void *HandlerContext, void 17264**RegionContext); // This used to be **ReturnContext 17265 17266------------------------------------------- 17267Summary of changes for this label: 07_21_00 17268 17269Major file consolidation and rename. All files within the 17270interpreter have been renamed as well as most header files. This 17271was done to prevent collisions with existing files in the host 17272OSs -- filenames such as "config.h" and "global.h" seem to be 17273quite common. The VC project files have been updated. All 17274makefiles will require modification. 17275 17276The parser/interpreter integration continues in Phase 5 with the 17277implementation of a complete 2-pass parse (the AML is parsed 17278twice) for each table; This avoids the construction of a huge 17279parse tree and therefore reduces the amount of dynamic memory 17280required by the subsystem. Greater use of the parse object cache 17281means that performance is unaffected. 17282 17283Many comments from the two code reviews have been rolled in. 17284 17285The 64-bit alignment support is complete. 17286 17287------------------------------------------- 17288Summary of changes for this label: 06_30_00 17289 17290With a nod and a tip of the hat to the technology of yesteryear, 17291we've added support in the source code for 80 column output 17292devices. The code is now mostly constrained to 80 columns or 17293less to support environments and editors that 1) cannot display 17294or print more than 80 characters on a single line, and 2) cannot 17295disable line wrapping. 17296 17297A major restructuring of the namespace data structure has been 17298completed. The result is 1) cleaner and more 17299understandable/maintainable code, and 2) a significant reduction 17300in the dynamic memory requirement for each named ACPI object 17301(almost half). 17302 17303------------------------------------------- 17304Summary of changes for this label: 06_23_00 17305 17306Linux support has been added. In order to obtain approval to get 17307the ACPI CA subsystem into the Linux kernel, we've had to make 17308quite a few changes to the base subsystem that will affect all 17309users (all the changes are generic and OS- independent). The 17310effects of these global changes have been somewhat far reaching. 17311Files have been merged and/or renamed and interfaces have been 17312renamed. The major changes are described below. 17313 17314Osd* interfaces renamed to AcpiOs* to eliminate namespace 17315pollution/confusion within our target kernels. All OSD 17316interfaces must be modified to match the new naming convention. 17317 17318Files merged across the subsystem. A number of the smaller source 17319and header files have been merged to reduce the file count and 17320increase the density of the existing files. There are too many 17321to list here. In general, makefiles that call out individual 17322files will require rebuilding. 17323 17324Interpreter files renamed. All interpreter files now have the 17325prefix am* instead of ie* and is*. 17326 17327Header files renamed: The acapi.h file is now acpixf.h. The 17328acpiosd.h file is now acpiosxf.h. We are removing references to 17329the acronym "API" since it is somewhat windowsy. The new name is 17330"external interface" or xface or xf in the filenames.j 17331 17332 17333All manifest constants have been forced to upper case (some were 17334mixed case.) Also, the string "ACPI_" has been prepended to many 17335(not all) of the constants, typedefs, and structs. 17336 17337The globals "DebugLevel" and "DebugLayer" have been renamed 17338"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 17339 17340All other globals within the subsystem are now prefixed with 17341"AcpiGbl_" Internal procedures within the subsystem are now 17342prefixed with "Acpi" (with only a few exceptions). The original 17343two-letter abbreviation for the subcomponent remains after "Acpi" 17344- for example, CmCallocate became AcpiCmCallocate. 17345 17346Added a source code translation/conversion utility. Used to 17347generate the Linux source code, it can be modified to generate 17348other types of source as well. Can also be used to cleanup 17349existing source by removing extraneous spaces and blank lines. 17350Found in tools/acpisrc/* 17351 17352OsdUnMapMemory was renamed to OsdUnmapMemory and then 17353AcpiOsUnmapMemory. (UnMap became Unmap). 17354 17355A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 17356When set to one, this indicates that the caller wants to use the 17357 17358semaphore as a mutex, not a counting semaphore. ACPI CA uses 17359both types. However, implementers of this call may want to use 17360different OS primitives depending on the type of semaphore 17361requested. For example, some operating systems provide separate 17362 17363"mutex" and "semaphore" interfaces - where the mutex interface is 17364much faster because it doesn't have all the overhead of a full 17365semaphore implementation. 17366 17367Fixed a deadlock problem where a method that accesses the PCI 17368address space can block forever if it is the first access to the 17369space. 17370 17371------------------------------------------- 17372Summary of changes for this label: 06_02_00 17373 17374Support for environments that cannot handle unaligned data 17375accesses (e.g. firmware and OS environments devoid of alignment 17376handler technology namely SAL/EFI and the IA-64 Linux kernel) has 17377been added (via configurable macros) in these three areas: - 17378Transfer of data from the raw AML byte stream is done via byte 17379moves instead of word/dword/qword moves. - External objects are 17380aligned within the user buffer, including package elements (sub- 17381objects). - Conversion of name strings to UINT32 Acpi Names is now 17382done byte-wise. 17383 17384The Store operator was modified to mimic Microsoft's 17385implementation when storing to a Buffer Field. 17386 17387Added a check of the BM_STS bit before entering C3. 17388 17389The methods subdirectory has been obsoleted and removed. A new 17390file, cmeval.c subsumes the functionality. 17391 17392A 16-bit (DOS) version of AcpiExec has been developed. The 17393makefile is under the acpiexec directory. 17394