1---------------------------------------- 217 December 2020. Summary of changes for version 20201217: 3 4This release is available at https://acpica.org/downloads 5 6 71) ACPICA kernel-resident subsystem: 8 9Note: The implementation of ACPI 6.4 is underway, and is expected to be 10mostly finished next month, when ACPI 6.4 is released. 11 12From qzed:- fixed-ae-class-macros. Fix exception code class checks. Added 13several new macros, such as ACPI_CNTL_EXCEPTION(Status) in order to 14enable this. 15 16AcpiExec/iASL/AcpiHelp: Added a few changes for support of GCC 10.2.0. 17These included a few casts, as well as a null pointer check. 18 19Fix -Wfallthrough: GCC 7.1 gained -Wimplicit-fallthrough to warn on 20implicit fallthrough, as well as __attribute__((__fallthrough__)) and 21comments to explicitly denote that cases of fallthrough were intentional. 22Clang also supports this warning and statement attribute, but not the 23comment form. Added a new macro, ACPI_FALLTHROUGH to support this feature 24of GCC. With assistance from @nickdesaulniers. 25 262) iASL Compiler/Disassembler and ACPICA tools: 27 28Added improvement to method call analysis by saving the return type and 29relaxing certain cases of type checking. 30 31iASL Table Compiler: Improved info messages. Added a message to the -T 32option for when the default template (DSDT) is used. 33Also added a note for when multiple SSDTs are created with a DSDT that 34the SSDTs are created in the same file as the DSDT. 35 36 37---------------------------------------- 38 3913 November 2020. Summary of changes for version 20201113: 40 41This release is available at https://acpica.org/downloads 42 43 441) ACPICA kernel-resident subsystem: 45 46Interpreter: fixed a memory leak by using use existing buffer in _HID 47repair. There was a memory leak that occurred when a _CID object is 48defined as a package containing string objects. When _CID is checked for 49any possible repairs, it calls a helper function to repair _HID (because 50_CID basically contains multiple _HID entries). The _HID repair function 51assumes that string objects are standalone objects that are not contained 52inside of any packages. The _HID repair function replaced the string 53object with a brand new object and attempted to delete the old object by 54decrementing the reference count of the old object. Strings inside of 55packages have a reference count of 2 so the _HID repair function leaves 56this object in a dangling state and causes a memory leak. Instead of 57allocating a brand new object and removing the old object, use the 58existing object when repairing the _HID object. 59 60Added function trace macros to improve namespace debugging. The namespace 61repair mechanism does not have function tracing macros. Add several trace 62macros to improve debuggability. 63 64Handle "orphan" _REG methods for GPIO OpRegions. Before this change 65AcpiEvExecuteRegMethods() had special handling to handle "orphan" (no 66matching OpRegion declared) _REG methods for EC nodes. On Intel Cherry 67Trail devices there are 2 possible ACPI OpRegions for accessing GPIOs. 68The standard GeneralPurposeIo OpRegion and the Cherry Trail - specific 69UserDefined 0x9X OpRegions. Having 2 different types of OpRegions leads 70to potential issues with checks for OpRegion availability, or in other 71words checks if _REG has been called for the OpRegion which the ACPI code 72wants to use. Except for the "orphan" EC handling, ACPICA core does not 73call _REG on an ACPI node which does not define an OpRegion matching the 74type being registered; and the reference design DSDT, from which most 75Cherry Trail DSDTs are derived, does not define GeneralPurposeIo, nor 76UserDefined(0x93) OpRegions for the GPO2 (UID 3) device, because no pins 77were assigned ACPI controlled functions in the reference design. Together 78this leads to the perfect storm, at least on the Cherry Trail based 79Medion Akayo E1239T. This design does use a GPO2 pin from its ACPI code 80and has added the Cherry Trail specific UserDefined(0x93) opregion to its 81GPO2 ACPI node to access this pin. But it uses a "has _REG been called" 82availability check for the standard GeneralPurposeIo OpRegion. This 83clearly is a bug in the DSDT, but this does work under Windows. This 84issue leads to the intel vbtn driver reporting the device always being in 85tablet-mode at boot, even if it is in laptop mode. Which in turn causes 86userspace to ignore touchpad events. So in other words, this issue causes 87the touchpad to not work at boot. This change fixes this by extending the 88"orphan" _REG method handling to also apply to GPIO address-space 89handlers. 90 91 922) iASL Compiler/Disassembler and ACPICA tools: 93 94iASL: Added more info to namespace dump file (-ln option). In a separate 95section of the dump file (after the main namespace dump), emit the full 96pathname for each namespace node, its type, and the ASL filename and line 97number where it is declared. 98 99AcpiHelp: Added an option to display/decode iASL exceptions. Option is: - 100x [Hex Value] where "Hex Value" is the iASL exception code. If Hex Value 101is omitted, all iASL exceptions are displayed. 102 103iASL: Use StringLiteral instead of StringData for some ASL macros. The 104use of the stringData rule allows for some "string" oriented opcodes 105(Such as ToString, ToHexString, etc.) None of which make sense with the 106macros in question. This change modifies the StringData part of the rule 107for these macros to a simple string literal - thus disallowing the use 108of ToString, ToHexString, etc. 109The following ASL operators (macros) are affected: 110EisaId 111Fprintf 112Printf 113ToUuid 114Unicode 115Note: The MS compiler requires the use of string literals for these 116operators also. 117 118iASL: Added a remark for an unknown UUID: ASL_MSG_UUID_NOT_FOUND. Search 119the list of "known" UUIDs for the input to the ToUUID macro. 120 121Added 5 new UUIDs to the known UUID table. All related to NVDIMM and the 122NFIT table. 123 124 125---------------------------------------- 126 12725 September 2020. Summary of changes for version 20200925: 128 129This release is available at https://acpica.org/downloads 130 131 1321) ACPICA kernel-resident subsystem: 133 134Preserve memory opregion mappings. The ACPICA's strategy with respect to 135the handling of memory mappings associated with memory operation regions 136is to avoid mapping the entire region at once which may be problematic at 137least in principle (for example, it may lead to conflicts with 138overlapping mappings having different attributes created by drivers). It 139may also be wasteful, because memory opregions on some systems take up 140vastchunks of address space while the fields in those regions actually 141accessed by AML are sparsely distributed. 142 143For this reason, a one-page "window" is mapped for a given opregion on 144the first memory access through it and if that "window" does not cover an 145address range accessed through that opregion subsequently, it is unmapped 146and a new "window" is mapped to replace it. Next, if the new "window" is 147not sufficient to access memory through the opregion in question in the 148future, it will be replaced with yet another "window" and so on. That 149may lead to a suboptimal sequence of memory mapping and unmapping 150operations, for example if two fields in one opregion separated from each 151other by a sufficiently wide chunk of unused address space are accessed 152in an alternating pattern. 153 154Added support for 64 bit risc-v compilation. Useful for acpica tools and 155incorporating ACPICA into the Firmware Test Suite. Colin Ian King 156<colin.king@canonical.com>. 157 158Added support for SMBus predefined names (from SMBus Control Method 159Interface Specification, Version 1.0, December 10, 1999. New predefined 160names: 161 _SBA 162 _SBI 163 _SBR 164 _SBT 165 _SBW 166 167AML Disassembler: Added a new command, "All <NameSeg>". This command will 168evaluate all objects in the current namespace whose NameString contains 169the input NameSeg as the last element of the NameString. Useful for 170debugging. 171 172 1732) iASL Compiler/Disassembler and ACPICA tools: 174 175iASL: fixed a crash that occurred when predefined objects return packages 176with lengths that exceed the initializer list. 177 178iASL: added more detail to external resolution error message when 179compiling multiple definition blocks. 180 181iASL: added a remark for an attempt to create a nameseg or namestring 182containing lower-case letters. This should prevent declaring multiple 183namesegs or namestrings in an attempt to refer to different objects (with 184different cases), but actually refer to the same object(s). 185 186iASL: improve alias analysis by saving object type. If the alias is a 187method type, the parameter count is also recorded. 188 189AcpiExec: Increase the default loop timeout value. Was 1 second, is now 19010 seconds. Prevents unnecessary timeouts when executing control methods 191from the command line. 192 193AcpiHelp/disassembler: Added a bunch of "known" UUIDs to the internal 194list. Includes: 195 Memory Device 196 Generic Buttons Device 197 NVDIMM Root Device 198 Control Method Battery 199 Device Graphs for _DSD method 200 Hierarchical Data Extension 201....ARM CoreSight Graph 202 203---------------------------------------- 204 205 20617 July 2020. Summary of changes for version 20200717: 207 208This release is available at https://acpica.org/downloads 209 210 2111) ACPICA kernel-resident subsystem: 212 213Do not increment OperationRegion reference counts for field units. Recent 214server firmware has revealed that this reference count can overflow on 215large servers that declare many field units (thousands) under the same 216OperationRegion. This occurs because each field unit declaration will add 217a reference count to the source OperationRegion. This release solves the 218reference count overflow for OperationRegion objects by preventing 219fieldUnits from incrementing their parent OperationRegion's reference 220count. 221 222Replaced one-element arrays with flexible-arrays, which were introduced 223in C99. 224 225Restored the readme file containing the directions for generation of 226ACPICA from source on MSVC 2017. Updated the file for MSVC 2017. File is 227located at: generate/msvc2017/readme.txt 228 2292) iASL Compiler/Disassembler and ACPICA tools: 230 231iASL: Fixed a regression found in version 20200214. Prevent iASL from 232emitting an extra byte of garbage data when control methods declared a 233single parameter type without using braces. This extra byte is known to 234cause a blue screen on the Windows AML interpreter. 235 236iASL: Made a change to allow external declarations to specify the type of 237a named object even when some name segments are not defined. 238This change allows the following ASL code to compile (When DEV0 is not 239defined or not defined yet): 240 241 External (\_SB.DEV0.OBJ1, IntObj) 242 External (\_SB.DEV0, DeviceObj) 243 244iASL: Fixed a problem where method names in "Alias ()" statement could be 245misinterpreted. They are now interpreted correctly as method invocations. 246 247iASL: capture a method parameter count (Within the Method info segment, 248as well as the argument node) when using parameter type lists. 249 250---------------------------------------- 251 252 25328 May 2020. Summary of changes for version 20200528: 254 255 2561) ACPICA kernel-resident subsystem: 257 258Removed old/obsolete Visual Studio files which were used to build the 259Windows versions of the ACPICA tools. Since we have moved to Visual 260Studio 2017, we are no longer supporting Visual Studio 2006 and 2009 261project files. The new subdirectory and solution file are located at: 262 263 acpica/generate/msvc2017/AcpiComponents.sln 264 265 2662) iASL Compiler/Disassembler and ACPICA tools: 267 268iASL: added support for a new OperationRegion Address Space (subtype): 269PlatformRtMechanism. Support for this new keyword is being released for 270early prototyping. It will appear in the next release of the ACPI 271specification. 272 273iASL: do not optimize the NameString parameter of the CondRefOf operator. 274In the previous iASL compiler release, the NameString parameter of the 275CondRefOf was optimized. There is evidence that some implementations of 276the AML interpreter do not perform the recursive search-to-parent search 277during the execution of the CondRefOf operator. Therefore, the CondRefOf 278operator behaves differently when the NameString parameter is a single 279name segment (a NameSeg) as opposed to a full NamePath (starting at the 280root scope) or a NameString containing parent prefixes. 281 282iASL: Prevent an inadvertent remark message. This change prevents a 283remark if within a control method the following exist: 2841) An Operation Region is defined, and 2852) A Field operator is defined that refers to the region. 286This happens because at the top level, the Field operator does not 287actually create a new named object, it simply references the operation 288region. 289 290Removed support for the acpinames utility. The acpinames was a simple 291utility used to populate and display the ACPI namespace without executing 292any AML code. However, ACPICA now supports executable opcodes outside of 293control methods. This means that executable AML opcodes such as If and 294Store opcodes need to be executed during table load. Therefore, acpinames 295would need to be updated to match the same behavior as the acpiexec 296utility and since acpiexec can already dump the entire namespace (via the 297'namespace' command), we no longer have the need to maintain acpinames. 298 299 In order to dump the contents of the ACPI namespace using acpiexec, 300execute the following command from the command line: 301 302 acpiexec -b "n" [aml files] 303 304---------------------------------------- 305 306 30730 April 2020. Summary of changes for version 20200430: 308 3091) ACPICA kernel-resident subsystem: 310 311Cleaned up the coding style of a couple of global variables 312(AcpiGbl_NextCmdNum and AcpiProtocolLengths) caught by static analyzers. 313AcpiProtocolLengths was made static, and the definition of 314AcpiGbl_NextCmdNum was moved to acglobal.h. 315 316 3172) iASL Compiler/Disassembler and ACPICA tools: 318 319iASL DataTable Compiler: Fixed a segfault on errors that aren't directly 320associated with a field. 321 322Disassembler: has been made more resilient so that it will continue to 323parse AML even if the AML generates ACPI namespace errors. This enables 324iASL to disassemble some AML that may have been compiled using older 325versions of iASL that no longer compile with newer versions of iASL. 326 327iASL: Fixed the required parameters for _NIH and _NIG. Previously, there 328was a mixup where _NIG required one parameter and _NIH required zero 329parameters. This change swaps these parameter requirements. Now it is 330required that _NIH must be called with one parameter and _NIG requires 331zero parameters. 332 333iASL: Allow use of undefined externals as long as they are protected by 334an if (CondRefOf (...)) block when compiling multiple definition blocks. 335 336iASL: Fixed the type override behavior of named objects that are declared 337as External. External declarations will no longer override the type of 338the actual definition if it already exists. 339 340AcpiNames: Added setargv.obj to the MSVC 2017 link sequence to enable 341command line wildcard support on Windows. Note: the AcpiNames utility is 342essentially redundant with the AcpiExec utility (using the "namespace" 343command) and is therefore deprecated. It will be removed in future 344releases of ACPICA. 345 346Disassembler: ignore AE_ALREADY_EXISTS status when parsing create* 347operators. The disassembler is intended to emit existing ASL code as-is. 348Therefore, error messages emitted during disassembly should be ignored or 349handled in a way such that the disassembler can continue to parse the 350AML. This change ignores AE_ALREADY_EXISTS errors during the deferred Op 351parsing for create operators in order to complete parsing ASL termlists. 352 353iASL DataTable Compiler: IVRS table: fix potentially uninitialized 354variable warning. Some compilers catch potential uninitialized variables. 355This is done by examining branches of if/else statements. This change 356replaces an "else if" with an "else" to fix the uninitialized variable 357warning. 358 359 360---------------------------------------- 36126 March 2020. Summary of changes for version 20200326: 362 363 3641) ACPICA kernel-resident subsystem: 365 366Performed a code clean-up to prevent build errors on early versions of 367GCC-10. 368 369Added the NHLT table signature. iASL data table compiler/disassembler 370support for this table is coming soon. 371 372 3732) iASL Compiler/Disassembler and ACPICA tools: 374 375AcpiExec: Fixed several problems with the namespace initialization file 376(-fi<filename> option). Includes fixes to prevent AE_ALREADY_EXISTS 377errors, several seg faults, and enhancements to line parsing within the 378init file. In addition, each object found in the init file and it's new 379value is displayed, as well as any such entries that do not have a 380corresponding name in the namespace. For reference, the syntax for the 381various supported data types are presented below: 382 PCHG 0x777788889999BBBB // Integer 383 \DEV1.STR1 "XYZ" // String 384 BUF1 (88 99 AA) // Buffer 385 PKG1 [0x1111 0x2222] // Package 386 \BF1 0x7980 // BufferField 387 RCRV 0x0123456789ABCDEF // Field Unit 388 389iASL: Added a custom iASL macro __EXPECT__(iASL-Error-Code). This macro 390can be used anywhere in a given ASL file to configure iASL to expect an 391iASL compiler error code on the line where this macro was placed. If the 392error code does not exist, an error is generated. This is intended to be 393used for ACPICA's ASL test suite, but can be used by ASL developers as 394well. 395 396iASL: table compiler: Implemented IVRS IVHD type 11h parsing. The AMD 397IVRS table parsing supported only IVHD type 10h structures. Parsing an 398IVHD type 11h caused the iasl to report unknown subtable type. Add 399necessary structure definition for IVHD type 11h and apply correct 400parsing method based on subtable type. Micha? ?ygowski. 401 402iASL: table compiler: Fixed IVRS table IVHD type 10h reserved field name 403According to AMD IOMMU Specification Revision 3.05 the reserved field 404should be IOMMU Feature Reporting. Change the name of the field to the 405correct one. Micha? ?ygowski. 406 407acpiexec: removed redeclaration of AcpiGbl_DbOpt_NoRegionSupport. Patch 408based on suggestions by David Seifert and Benjamin Berg. 409 410iASL: table compiler: removed an unused variable (DtCompilerParserResult) 411causing linking errors. Patch based on suggestions by David Seifert and 412Benjamin Berg. 413 414iASL: table compiler: make LexBuffer static to avoid linking errors in 415newer compilers. Patch based on suggestions by David Seifert and Benjamin 416Berg. 417 418iASL: fixed type matching between External and Named objects. External 419object types can only be expressed with ACPI object type values that are 420defined in the ACPI spec. However, iASL uses ACPI object type values that 421are local to ACPICA in addition to the values defined in the ACPI spec. 422This change implements type matching to map some object type values 423specific to ACPICA to ones that are defined in the ACPI spec. 424 425iASL: Dropped the type mismatch compiler error that can arise from 426External declarations to a warning. This warning can occur when there is 427a type difference between the external declaration and the actual object 428declaration (when compiling multiple files/modules simultaneously). 429 430iASL: removed an incorrect error message regarding externals. This change 431removes an incorrect error that is emitted when a duplicate external 432declaration does not contain a type that opens a scope. This is incorrect 433because the duplicate external with conflicting types are already caught 434by iASL and it doesn't make any sense to enforce what this conflicting 435type should be. 436 437AcpiXtract: fix AX_IS_TABLE_BLOCK_HEADER macro. This macro needs to be 438surrounded by parens. Otherwise, a logical statement that applies a 439logical not operator to this macro could result in a computation that 440applies the operator to the left side of the logical and but not the 441right. Reported-by: John Levon <john.levon@joyent.com> 442 443Fixed a problem with the local version of sprint(): On 32-bit, the 444provided sprintf() is non-functional: with a size of ACPI_UINT32_MAX, 445String + Size will wrap, meaning End < Start, and 446AcpiUtBoundStringOutput() will never output anything as a result. The 447symptom seen of this was acpixtract failing to output anything -- with a 448custom build that included utprint.c. Signed-off-by: John Levon 449<john.levon@joyent.com> 450 451iASL: Changed the "PlatformCommChannel" ASL keyword to "PCC", as per the 452ACPI specification. 453 454 455---------------------------------------- 45614 February 2020. Summary of changes for version 20200214: 457 458 4591) ACPICA kernel-resident subsystem: 460 461Enable sleep button on ACPI legacy wake: Hibernation (S4) is triggered 462in a guest when it receives a sleep trigger from the hypervisor. When the 463guest resumes from this power state, it does not see the SleepEnabled 464bit. In other words, the sleepHibernation (S4) is triggered in a guest 465when it receives a sleep trigger from the hypervisor. When the guest 466resumes from this power state, it does not see the SleepEnabled bit. In 467other words, the sleep button is not enabled on waking from an S4 state. 468This causes subsequent invocation of sleep state to fail since the 469guest.button is not enabled on waking from an S4 state. This causes 470subsequent invocation of sleep state to fail in the guest. Fix this 471problem by enabling the sleep button in ACPI legacy wake. From Anchal 472Agarwal <anchalag@amazon.com>. 473 474Implemented a new external interface, AcpiAnyGpeStatusSet (). To be used 475for checking the status bits of all enabled GPEs in one go. It is needed 476to distinguish spurious SCIs from genuine ones when deciding whether or 477not to wake up the system from suspend-to-idle. 478 479Generic Makefiles: replace HOST name with ACPI_HOST: Some machines may be 480using HOST in their environment to represent the host name for their 481machines. Avoid this problem by renaming this variable from HOST to 482ACPI_HOST. 483 484MSVC 2017 project files: Enable multiprocessor generation to improve 485build performance. 486 487Added a macro to get the byte width of a Generic Address structure. New 488ACPI_ACCESS_BYTE_WIDTH is in addition to the existing 489ACPI_ACCESS_BIT_WIDTH. From Mika Westerberg. 490 491 4922) iASL Compiler/Disassembler and ACPICA tools: 493 494iASL: Implemented full support for the (optional, rarely used) ReturnType 495and ParameterTypesList for the Method, Function, and External operators. 496For Method declarations, the number of individual ParameterTypes must 497match the declaration of the number of arguments (NumArgs). This also 498Fixes a problem with the External operator where extra/extraneous bytes 499were emitted in the AML code if the optional ReturnType/ParameterTypes 500were specified for a MethodObj declaration. 501New error message: 5021) Method NumArgs count does not match length of ParameterTypes list 503 504iASL: Implemented detection of type mismatches between External 505declarations and named object declarations. Also, detect type mismatches 506between multiple External declarations of the same Name. 507New error messages: 5081) Type mismatch between external declaration and actual object 509declaration detected 5102) Type mismatch between multiple external declarations detected 511 512iASL: Implemented new error messages for External operators that specify 513a ReturnType and/or ParameterTypesList for any object type other than 514control methods (MethodObj). 515New error messages: 5161) Return type is only allowed for Externals declared as MethodObj 5172) Parameter type is only allowed for Externals declared as MethodObj 518 519iASL: Implemented two new remark/warning messages for ASL code that 520creates named objects from within a control method. This is very 521inefficient since the named object must be created and deleted each time 522the method is executed. 523New messages: 5241) Creation of named objects within a method is highly inefficient, use 525globals or method local variables instead (remark) 5262) Static OperationRegion should be declared outside control method 527(warning) 528 529iASL: Improved illegal forward reference detection by adding support to 530detect forward-reference method invocations. 531 532iASL: Detect and issue an error message for NameStrings that contain too 533many individual NameSegs (>255). This is an AML limitation that is 534defined in the ACPI specification. 535New message: 5361) NameString contains too many NameSegs (>255) 537 538acpidump: windows: use GetSystemFirmwareTable API for all tables except 539SSDT. By using this API, acpidump is able to get all tables in the XSDT 540 541iASL: Removed unused parser file and updated msvc2017 project files. 542Removed the obsolete AslCompiler.y from the repository. 543 544iASL: msvc2017: Fixed macros in the file dependency list to prevent 545unnecessary rebuilds. Replace %(Directory) with %(RelativeDir). 546 547Disassembler: Prevent spilling error messages to the output file. All 548errors are directed to the console instead. These error messages 549prevented re-compilation of the resulting disassembled ASL output file 550(.DSL). 551 552 553---------------------------------------- 55410 January 2020. Summary of changes for version 20200110: 555 556 5571) ACPICA kernel-resident subsystem: 558 559Updated all copyrights to 2020. This affects all ACPICA source code 560modules. 561 562 5632) iASL Compiler/Disassembler and ACPICA tools: 564 565ASL test suite (ASLTS): Updated all copyrights to 2020. 566 567Tools and utilities: Updated all signon copyrights to 2020. 568 569iASL: fix forward reference analysis for field declarations. Fixes 570forward reference analysis for field declarations by searching the 571parent scope for the named object when the object is not present in 572the current scope. 573 574iASL: Improved the error output for ALREADY_EXISTS errors. Now, the 575full pathname of the name that already exists is printed. 576 577iASL: Enhance duplicate Case() detection for buffers. Add check for 578buffers with no initializer list (these buffers will be filled with 579zeros at runtime.) 580 581 582---------------------------------------- 58313 December 2019. Summary of changes for version 20191213: 584 585 5861) ACPICA kernel-resident subsystem: 587 588Return a Buffer object for all fields created via the CreateField 589operator. Previously, an Integer would be returned if the size of 590the field was less than or equal to the current size of an Integer. 591Although this goes against the ACPI specification, it provides 592compatibility with other ACPI implementations. Also updated the 593ASLTS test suite to reflect this new behavior. 594 5952) iASL Compiler/Disassembler and ACPICA tools: 596 597iASL: Implemented detection of (and throw an error for) duplicate 598values for Case statements within a single Switch statement. Duplicate 599Integers, Strings, and Buffers are supported. 600 601iASL: Fix error logging issue during multiple file compilation -- 602Switch to the correct input file during error node creation. 603 604iASL: For duplicate named object creation, now emit an error instead 605of a warning - since this will cause a runtime error. 606 607AcpiSrc: Add unix line-ending support for non-Windows builds. 608 609iASL: Add an error condition for an attempt to create a NameString 610with > 255 NameSegs (the max allowable via the AML definition). 611 612 613---------------------------------------- 61418 October 2019. Summary of changes for version 20191018: 615 616 6171) ACPICA kernel-resident subsystem: 618 619Debugger: added a new command: ?Fields [address space ID]?. This command 620dumps the contents of all field units that are defined within the 621namespace with a particular address space ID. 622 623Modified the external interface AcpiLoadTable() to return a table index. 624This table index can be used for unloading a table for debugging. 625 ACPI_STATUS 626 AcpiLoadTable ( 627 ACPI_TABLE_HEADER *Table, 628 UINT32 *TableIndex)) 629 630Implemented a new external interface: AcpiUnloadTable() This new function 631takes a table index as an argument and unloads the table. Useful for 632debugging only. 633 ACPI_STATUS 634 AcpiUnloadTable ( 635 UINT32 TableIndex)) 636 637Ported the AcpiNames utility to use the new table initialization 638sequence. The utility was broken before this change. Also, it was 639required to include most of the AML interpreter into the utility in order 640to process table initialization (module-level code execution.) 641 642Update for results from running Clang V8.0.1. This fixes all "dead 643assignment" warnings. There are still several "Dereference of NULL 644pointer" warnings, but these have been found to be false positive 645warnings. 646 647 6482) iASL Compiler/Disassembler and ACPICA tools: 649 650iASL: numerous table compiler changes to ensure that the usage of 651yacc/bison syntax is POSIX-compliant. 652 653iASL/disassembler: several simple bug fixes in the data table 654disassembler. 655 656Acpiexec: expanded the initialization file (the -fi option) to initialize 657strings, buffers, packages, and field units. 658 659 660---------------------------------------- 66116 August 2019. Summary of changes for version 20190816: 662 663This release is available at https://acpica.org/downloads 664 665 6661) ACPICA kernel-resident subsystem: 667 668Modified the OwnerId mechanism to allow for more Owner Ids. The previous 669limit was 256 Ids, now it is 4096 Ids. This prevents OWNER_ID_LIMIT 670exceptions on machines with a large number of initialization threads, 671many CPU cores and nested initialization control methods. 672 673Introduced acpi_dispatch_gpe() as a wrapper around AcpiEvDetectGpe() for 674checking if the given GPE (as represented by a GPE device handle and a 675GPE number) is currently active and dispatching it (if that's the case) 676outside of interrupt context. 677 678Table load: exit the interpreter before initializing objects within the 679new table This prevents re-acquiring the interpreter lock when loading 680tables 681 682Added the "Windows 2019" string to the _OSI support (version 1903). Jung- 683uk Kim 684 685Macros: removed pointer math on a null pointer. Causes warnings on some 686compilers and/or tools. Changed ACPI_TO_POINTER to use ACPI_CAST_PTR 687instead of using arithmetic. 688 689Fully deployed the ACPI_PRINTF_LIKE macro. This macro was not being used 690across all "printf-like" internal functions. Also, cleanup all calls to 691such functions (both in 32-bit mode and 64-bit mode) now that they are 692analyzed by the gcc compiler via ACPI_PRINTF_LIKE. 693 694 6952) iASL Compiler/Disassembler and ACPICA tools: 696 697iASL: implemented a new data table compiler flex/bison front-end. This 698change is internal and is not intended to result in changes to the 699compiled code. This new compiler front-end can be invoked using the -tp 700option for now, until the old mechanism is removed. 701 702ASLTS: Implemented a new data table compiler test suite. This test suite 703generates all table templates and compile/disassemble/re-compile/binary- 704compare each file. 705 706iASL: return -1 if AML files were not generated due to compiler errors 707 708iASL: added a warning on use of the now-legacy ASL Processor () keyword. 709 710iASL: added an error on _UID object declaration that returns a String 711within a Processor () declaration. A _UID for a processor must be an 712Integer. 713 714iASL: added a null terminator to name strings that consist only of 715multiple parent prefixes (^) 716 717iASL: added support to compile both ASL and data table files in a single 718command. 719 720Updated the tool generation project files that were recently migrated to 721MSVC 2017 to eliminate all new warnings. The new project files appear in 722the directory \acpica\generate\msvc2017. This change effectively 723deprecates the older project files in \acpica\generate\msvc9. 724 725 726---------------------------------------- 72703 July 2019. Summary of changes for version 20190703: 728 729 7301) ACPICA kernel-resident subsystem: 731 732Remove legacy module-level support code. There were still some remnants 733of the legacy module-level code executions. Since we no longer support 734this option, this is essentially dead code and has been removed from the 735ACPICA source. 736 737iASL: ensure that _WAK, _PTS, _TTS, and _Sx are declared only at the root 738scope. If these named objects are declared outside the root scope, they 739will not be invoked by any host Operating System. 740 741Clear status of GPEs on first direct enable. ACPI GPEs (other than the EC 742one) can be enabled in two situations. First, the GPEs with existing _Lxx 743and _Exx methods are enabled implicitly by ACPICA during system 744initialization. Second, the GPEs without these methods (like GPEs listed 745by _PRW objects for wakeup devices) need to be enabled directly by the 746code that is going to use them (e.g. ACPI power management or device 747drivers). 748 749In the former case, if the status of a given GPE is set to start with, 750its handler method (either _Lxx or _Exx) needs to be invoked to take care 751of the events (possibly) signaled before the GPE was enabled. In the 752latter case, however, the first caller of AcpiEnableGpe() for a given GPE 753should not be expected to care about any events that might be signaled 754through it earlier. In that case, it is better to clear the status of 755the GPE before enabling it, to prevent stale events from triggering 756unwanted actions (like spurious system resume, for example). 757 758For this reason, modify AcpiEvAddGpeReference() to take an additional 759boolean argument indicating whether or not the GPE status needs to be 760cleared when its reference counter changes from zero to one and make 761AcpiEnableGpe() pass TRUE to it through that new argument. 762 763 7642) iASL Compiler/Disassembler and ACPICA tools: 765 766The tool generation process has been migrated to MSVC 2017, and all 767project files have been upgraded. The new project files appear in the 768directory \acpica\generate\msvc2017. This change effectively deprecates 769the older project files in \acpica\generate\msvc9. 770 771iASL: ensure that _WAK, _PTS, _TTS, and _Sx are declared only at the root 772scope. If these named objects are declared outside the root scope, they 773will not be invoked by any host Operating System 774 775---------------------------------------- 77609 May 2019. Summary of changes for version 20190509: 777 778 7791) ACPICA kernel-resident subsystem: 780 781Revert commit 6c43e1a ("ACPICA: Clear status of GPEs before enabling 782them") that causes problems with Thunderbolt controllers to occur if a 783dock device is connected at init time (the xhci_hcd and thunderbolt 784modules crash which prevents peripherals connected through them from 785working). Commit 6c43e1a effectively causes commit ecc1165b8b74 ("ACPICA: 786Dispatch active GPEs at init time") to get undone, so the problem 787addressed by commit ecc1165b8b74 appears again as a result of it. 788 789 7902) iASL Compiler/Disassembler and ACPICA tools: 791 792Reverted iASL: Additional forward reference detection. This change 793reverts forward reference detection for field declarations. The feature 794unintentionally emitted AML bytecode with incorrect package lengths for 795some ASL code related to Fields and OperationRegions. This malformed AML 796can cause systems to crash 797during boot. The malformed AML bytecode is emitted in iASL version 79820190329 and 20190405. 799 800iASL: improve forward reference detection. This change improves forward 801reference detection for named objects inside of scopes. If a parse object 802has the OP_NOT_FOUND_DURING_LOAD set, it means that Op is a reference to 803a named object that is declared later in the AML bytecode. This is 804allowed if the reference is inside of a method and the declaration is 805outside of a method like so: 806 807DefinitionBlock(...) 808{ 809 Method (TEST) 810 { 811 Return (NUM0) 812 } 813 Name (NUM0,0) 814} 815 816However, if the declaration and reference are both in the same method or 817outside any methods, this is a forward reference and should be marked as 818an error because it would result in runtime errors. 819 820DefinitionBlock(...) 821{ 822 Name (BUFF, Buffer (NUM0) {}) // Forward reference 823 Name (NUM0, 0x0) 824 825 Method (TEST) 826 { 827 Local0 = NUM1 828 Name (NUM1, 0x1) // Forward reference 829 return (Local0) 830 } 831} 832 833iASL: Implemented additional buffer overflow analysis for BufferField 834declarations. Check if a buffer index argument to a create buffer field 835operation is beyond the end of the target buffer. 836 837This affects these AML operators: 838 839 AML_CREATE_FIELD_OP 840 AML_CREATE_BIT_FIELD_OP 841 AML_CREATE_BYTE_FIELD_OP 842 AML_CREATE_WORD_FIELD_OP 843 AML_CREATE_DWORD_FIELD_OP 844 AML_CREATE_QWORD_FIELD_OP 845 846 There are three conditions that must be satisfied in order to allow this 847validation at compile time: 848 849 1) The length of the target buffer must be an integer constant 850 2) The index specified in the create* must be an integer constant 851 3) For CreateField, the bit length argument must be non-zero. 852 853Example: 854 Name (BUF1, Buffer() {1,2}) 855 CreateField (BUF1, 7, 9, CF03) // 3: ERR 856 857dsdt.asl 14: CreateField (BUF1, 7, 9, CF03) // 3: ERR 858Error 6165 - ^ Buffer index beyond end of 859target buffer 860 861 862---------------------------------------- 86305 April 2019. Summary of changes for version 20190405: 864 865 8661) ACPICA kernel-resident subsystem: 867 868Event Manager: History: Commit 18996f2db918 ("ACPICA: Events: Stop 869unconditionally clearing ACPI IRQs during suspend/resume") was added 870earlier to stop clearing of event status bits unconditionally on suspend 871and resume paths. Though this change fixed an issue on suspend path, it 872introduced regressions on several resume paths. In the case of S0ix, 873events are enabled as part of device suspend path. If status bits for the 874events are set when they are enabled, it could result in premature wake 875from S0ix. If status is cleared for any event that is being enabled so 876that any stale events are cleared out. In case of S0ix, events are 877enabled as part of device suspend path. If status bits for the events are 878set when they are enabled, it could result in premature wake from S0ix. 879 880This change ensures that status is cleared for any event that is being 881enabled so that any stale events are cleared out. 882 883 8842) iASL Compiler/Disassembler and ACPICA tools: 885 886iASL: Implemented an enhanced multiple file compilation that combines 887named objects from all input files to a single namespace. With this 888feature, any unresolved external declarations as well as duplicate named 889object declarations can be detected during compilation rather than 890generating errors much later at runtime. The following commands are 891examples that utilize this feature: 892 iasl dsdt.asl ssdt.asl 893 iasl dsdt.asl ssdt1.asl ssdt2.asl 894 iasl dsdt.asl ssdt*.asl 895 896---------------------------------------- 89729 March 2019. Summary of changes for version 20190329: 898 899 9001) ACPICA kernel-resident subsystem: 901 902Namespace support: Remove the address nodes from global list after method 903termination. The global address list contains pointers to namespace nodes 904that represent Operation Regions. This change properly removes Operation 905Region namespace nodes that are declared dynamically during method 906execution. 907 908Linux: Use a different debug default than ACPICA. There was a divergence 909between Linux and the ACPICA codebases. In order to resolve this 910divergence, Linux now declares its own debug default in aclinux.h 911 912Renamed some internal macros to improve code understanding and 913maintenance. The macros below all operate on single 4-character ACPI 914NameSegs, not generic strings (old -> new): 915 ACPI_NAME_SIZE -> ACPI_NAMESEG_SIZE 916 ACPI_COMPARE_NAME -> ACPI_COMPARE_NAMESEG 917 ACPI_MOVE_NAME -> ACPI_COPY_NAMESEG 918 919Fix for missing comma in array declaration for the AcpiGbl_GenericNotify 920table. 921 922Test suite: Update makefiles, add PCC operation region support 923 924 9252) iASL Compiler/Disassembler and Tools: 926 927iASL: Implemented additional illegal forward reference detection. Now 928detect and emit an error upon detection of a forward reference from a 929Field to an Operation Region. This will fail at runtime if allowed to 930pass the compiler. 931 932AcpiExec: Add an address list check for dynamic Operation Regions. This 933feature performs a sanity test for each node the global address list. 934This is done in order to ensure that all dynamic operation regions are 935properly removed from the global address list and no dangling pointers 936are left behind. 937 938Disassembler: Improved generation of resource pathnames. This change 939improves the code that generates resource descriptor and resource tag 940pathnames. The original code used a bunch of str* C library functions 941that caused warnings on some compilers. 942 943iASL: Removed some uses of strncpy and replaced with memmove. The strncpy 944function can overwrite buffers if the calling code is not very careful. 945In the case of generating a module/table header, use of memmove is a 946better implementation. 947 948 9493) Status of new features that have not been completed at this time: 950 951iASL: Implementing an enhanced multiple file compilation into a single 952namespace feature (Status): This feature will be released soon, and 953allows multiple ASL files to be compiled into the same single namespace. 954By doing so, any unresolved external declarations as well as duplicate 955named object declarations can be detected during compilation (rather than 956later during runtime). The following commands are examples that utilize 957this feature: 958 iasl dsdt.asl ssdt.asl 959 iasl dsdt.asl ssdt1.asl ssdt2.asl 960 iasl dsdt.asl ssdt*.asl 961 962ASL tutorial status: Feedback is being gathered internally and the 963current plan is to publish this tutorial on the ACPICA website after a 964final review by a tech writer. 965 966---------------------------------------- 96715 February 2019. Summary of changes for version 20190215: 968 969 9700) Support for ACPI specification version 6.3: 971 972Add PCC operation region support for the AML interpreter. This adds PCC 973operation region support in the AML interpreter and a default handler for 974acpiexec. The change also renames the PCC region address space keyword to 975PlatformCommChannel. 976 977Support for new predefined methods _NBS, _NCH, _NIC, _NIH, and _NIG. 978These methods provide OSPM with health information and device boot 979status. 980 981PDTT: Add TriggerOrder to the PCC Identifier structure. The field value 982defines if the trigger needs to be invoked by OSPM before or at the end 983of kernel crash dump processing/handling operation. 984 985SRAT: Add Generic Affinity Structure subtable. This subtable in the SRAT 986is used for describing devices such as heterogeneous processors, 987accelerators, GPUs, and IO devices with integrated compute or DMA 988engines. 989 990MADT: Add support for statistical profiling in GICC. Statistical 991profiling extension (SPE) is an architecture-specific feature for ARM. 992 993MADT: Add online capable flag. If this bit is set, system hardware 994supports enabling this processor during OS runtime. 995 996New Error Disconnect Recover Notification value. There are a number of 997scenarios where system Firmware in collaboration with hardware may 998disconnect one or more devices from the rest of the system for purposes 999of error containment. Firmware can use this new notification value to 1000alert OSPM of such a removal. 1001 1002PPTT: New additional fields in Processor Structure Flags. These flags 1003provide more information about processor topology. 1004 1005NFIT/Disassembler: Change a field name from "Address Range" to "Region 1006Type". 1007 1008HMAT updates: make several existing fields to be reserved as well as 1009rename subtable 0 to "memory proximity domain attributes". 1010 1011GTDT: Add support for new GTDT Revision 3. This revision adds information 1012for the EL2 timer. 1013 1014iASL: Update the HMAT example template for new fields. 1015 1016iASL: Add support for the new revision of the GTDT (Rev 3). 1017 1018 10191) ACPICA kernel-resident subsystem: 1020 1021AML Parser: fix the main AML parse loop to correctly skip erroneous 1022extended opcodes. AML opcodes come in two lengths: 1-byte opcodes and 2- 1023byte extended opcodes. If an error occurs during an AML table load, the 1024AML parser will continue loading the table by skipping the offending 1025opcode. This implements a "load table at any cost" philosophy. 1026 1027 10282) iASL Compiler/Disassembler and Tools: 1029 1030iASL: Add checks for illegal object references, such as a reference 1031outside of method to an object within a method. Such an object is only 1032temporary. 1033 1034iASL: Emit error for creation of a zero-length operation region. Such a 1035region is rather pointless. If encountered, a runtime error is also 1036implemented in the interpreter. 1037 1038Debugger: Fix a possible fault with the "test objects" command. 1039 1040iASL: Makefile: support parent directory filenames containing embedded 1041spaces. 1042 1043iASL: Update the TPM2 template to revision 4. 1044 1045iASL: Add the ability to report specific warnings or remarks as errors. 1046 1047Disassembler: Disassemble OEMx tables as actual AML byte code. 1048Previously, these tables were treated as "unknown table". 1049 1050iASL: Add definition and disassembly for TPM2 revision 3. 1051 1052iASL: Add support for TPM2 rev 3 compilation. 1053 1054 1055---------------------------------------- 105608 January 2019. Summary of changes for version 20190108: 1057 1058 10591) ACPICA kernel-resident subsystem: 1060 1061Updated all copyrights to 2019. This affects all source code modules. 1062 1063 10642) iASL Compiler/Disassembler and Tools: 1065 1066ASL test suite (ASLTS): Updated all copyrights to 2019. 1067 1068Tools: Updated all signon copyrights to 2019. 1069 1070AcpiExec: Added a new option to dump extra information concerning any 1071memory leaks detected by the internal object/cache tracking mechanism. - 1072va 1073 1074iASL: Updated the table template for the TPM2 table to the newest version 1075of the table (Revision 4) 1076 1077 1078---------------------------------------- 107913 December 2018. Summary of changes for version 20181213: 1080 1081 10821) ACPICA Kernel-resident Subsystem: 1083 1084Fixed some buffer length issues with the GenericSerialBus, related to two 1085of the bidirectional protocols: AttribRawProcessBytes and AttribRawBytes, 1086which are rarely seen in the field. For these, the LEN field of the ASL 1087buffer is now ignored. Hans de Goede 1088 1089Implemented a new object evaluation trace mechanism for control methods 1090and data objects. This includes nested control methods. It is 1091particularly useful for examining the ACPI execution during system 1092initialization since the output is relatively terse. The flag below 1093enables the output of the trace via the ACPI_DEBUG_PRINT_RAW interface: 1094 #define ACPI_LV_EVALUATION 0x00080000 1095 1096Examples: 1097 Enter evaluation : _SB.PCI0._INI (Method) 1098 Exit evaluation : _SB.PCI0._INI 1099 Enter evaluation : _OSI (Method) 1100 Exit evaluation : _OSI 1101 Enter evaluation : _SB.PCI0.TEST (Method) 1102 Nested method call : _SB.PCI0.NST1 1103 Exit nested method : _SB.PCI0.NST1 1104 Exit evaluation : _SB.PCI0.TEST 1105 1106Added two recently-defined _OSI strings. See 1107https://docs.microsoft.com/en-us/windows-hardware/drivers/acpi/winacpi- 1108osi. 1109 "Windows 2018" 1110 "Windows 2018.2" 1111 1112Update for buffer-to-string conversions via the ToHexString ASL operator. 1113A "0x" is now prepended to each of the hex values in the output string. 1114This provides compatibility with other ACPI implementations. The ACPI 1115specification is somewhat vague on this issue. 1116 Example output string after conversion: 1117"0x01,0x02,0x03,0x04,0x05,0x06" 1118 1119Return a run-time error for TermArg expressions within individual package 1120elements. Although this is technically supported by the ASL grammar, 1121other ACPI implementations do not support this either. Also, this fixes a 1122fault if this type of construct is ever encountered (it never has been). 1123 1124 11252) iASL Compiler/Disassembler and Tools: 1126 1127iASL: Implemented a new compile option (-ww) that will promote individual 1128warnings and remarks to errors. This is intended to enhance the firmware 1129build process. 1130 1131AcpiExec: Implemented a new command-line option (-eo) to support the new 1132object evaluation trace mechanism described above. 1133 1134Disassembler: Added support to disassemble OEMx tables as AML/ASL tables 1135instead of a "unknown table" message. 1136 1137AcpiHelp: Improved support for the "special" predefined names such as 1138_Lxx, _Exx, _EJx, _T_x, etc. For these, any legal hex value can now be 1139used for "xx" and "x". 1140 1141---------------------------------------- 114231 October 2018. Summary of changes for version 20181031: 1143 1144 1145An Operation Region regression was fixed by properly adding address 1146ranges to a global list during initialization. This allows OS to 1147accurately check for overlapping regions between native devices (such as 1148PCI) and Operation regions as well as checking for region conflicts 1149between two Operation Regions. 1150 1151Added support for the 2-byte extended opcodes in the code/feature that 1152attempts to continue parsing during the table load phase. Skip parsing 1153Device declarations (and other extended opcodes) when an error occurs 1154during parsing. Previously, only single-byte opcodes were supported. 1155 1156Cleanup: Simplified the module-level code support by eliminating a 1157useless global variable (AcpiGbl_GroupModuleLeveCode). 1158 1159 11602) iASL Compiler/Disassembler and Tools: 1161 1162iASL/Preprocessor: Fixed a regression where an incorrect use of ACPI_FREE 1163could cause a fault in the preprocessor. This was an inadvertent side- 1164effect from moving more allocations/frees to the local cache/memory 1165mechanism. 1166 1167iASL: Enhanced error detection by validating that all NameSeg elements 1168within a NamePatch actually exist. The previous behavior was spotty at 1169best, and such errors could be improperly ignored at compiler time (never 1170at runtime, however. There are two new error messages, as shown in the 1171examples below: 1172 1173dsdt.asl 33: CreateByteField (TTTT.BXXX, 1, CBF1) 1174Error 6161 - ^ One or more objects within 1175the Pathname do not exist (TTTT.BXXX) 1176 1177dsdt.asl 34: CreateByteField (BUF1, UUUU.INT1, BBBB.CBF1) 1178Error 6160 - One or more prefix Scopes do not exist ^ 1179(BBBB.CBF1) 1180 1181iASL: Disassembler/table-compiler: Added support for the static data 1182table TPM2 revision 3 (an older version of TPM2). The support has been 1183added for the compiler and the disassembler. 1184 1185Fixed compilation of DOS format data table file on Unix/Linux systems. 1186iASL now properly detects line continuations (\) for DOS format data 1187table definition language files on when executing on Unix/Linux. 1188 1189---------------------------------------- 119003 October 2018. Summary of changes for version 20181003: 1191 1192 11932) iASL Compiler/Disassembler and Tools: 1194 1195Fixed a regression introduced in version 20180927 that could cause the 1196compiler to fault, especially with NamePaths containing one or more 1197carats (^). Such as: ^^_SB_PCI0 1198 1199Added a new remark for the Sleep() operator when the sleep time operand 1200is larger than one second. This is a very long time for the ASL/BIOS code 1201and may not be what was intended by the ASL writer. 1202 1203---------------------------------------- 120427 September 2018. Summary of changes for version 20180927: 1205 1206 12071) ACPICA kernel-resident subsystem: 1208 1209Updated the GPE support to clear the status of all ACPI events when 1210entering any/all sleep states in order to avoid premature wakeups. In 1211theory, this may cause some wakeup events to be missed, but the 1212likelihood of this is small. This change restores the original behavior 1213of the ACPICA code in order to fix a regression seen from the previous 1214"Stop unconditionally clearing ACPI IRQs during suspend/resume" change. 1215This regression could cause some systems to incorrectly wake immediately. 1216 1217Updated the execution of the _REG methods during initialization and 1218namespace loading to bring the behavior into closer conformance to the 1219ACPI specification and other ACPI implementations: 1220 1221From the ACPI specification 6.2A, section 6.5.4 "_REG (Region): 1222 "Control methods must assume all operation regions are inaccessible 1223until the _REG(RegionSpace, 1) method is executed" 1224 1225 "The exceptions to this rule are: 12261. OSPM must guarantee that the following operation regions are always 1227accessible: 1228 SystemIO operation regions. 1229 SystemMemory operation regions when accessing memory returned by the 1230System Address Map reporting interfaces." 1231 1232Since the state of both the SystemIO and SystemMemory address spaces are 1233defined by the specification to never change, this ACPICA change ensures 1234that now _REG is never called on them. This solves some problems seen in 1235the field and provides compatibility with other ACPI implementations. An 1236update to the upcoming new version of the ACPI specification will help 1237clarify this behavior. 1238 1239Updated the implementation of support for the Generic Serial Bus. For the 1240"bidirectional" protocols, the internal implementation now automatically 1241creates a return data buffer of the maximum size (255). This handles the 1242worst-case for data that is returned from the serial bus handler, and 1243fixes some problems seen in the field. This new buffer is directly 1244returned to the ASL. As such, there is no true "bidirectional" buffer, 1245which matches the ACPI specification. This is the reason for the "double 1246store" seen in the example ASL code in the specification, shown below: 1247 1248Word Process Call (AttribProcessCall): 1249 OperationRegion(TOP1, GenericSerialBus, 0x00, 0x100) 1250 Field(TOP1, BufferAcc, NoLock, Preserve) 1251 { 1252 FLD1, 8, // Virtual register at command value 1. 1253 } 1254 1255 Name(BUFF, Buffer(20){}) // Create GenericSerialBus data buffer 1256 // as BUFF 1257 CreateWordField(BUFF, 0x02, DATA) // DATA = Data (Word) 1258 1259 Store(0x5416, DATA) // Save 0x5416 into the data buffer 1260 Store(Store(BUFF, FLD1), BUFF) // Invoke a write/read Process Call 1261transaction 1262 // This is the "double store". The write to 1263 // FLD1 returns a new buffer, which is stored 1264 // back into BUFF with the second Store. 1265 1266 12672) iASL Compiler/Disassembler and Tools: 1268 1269iASL: Implemented detection of extraneous/redundant uses of the Offset() 1270operator within a Field Unit list. A remark is now issued for these. For 1271example, the first two of the Offset() operators below are extraneous. 1272Because both the compiler and the interpreter track the offsets 1273automatically, these Offsets simply refer to the current offset and are 1274unnecessary. Note, when optimization is enabled, the iASL compiler will 1275in fact remove the redundant Offset operators and will not emit any AML 1276code for them. 1277 1278 OperationRegion (OPR1, SystemMemory, 0x100, 0x100) 1279 Field (OPR1) 1280 { 1281 Offset (0), // Never needed 1282 FLD1, 32, 1283 Offset (4), // Redundant, offset is already 4 (bytes) 1284 FLD2, 8, 1285 Offset (64), // OK use of Offset. 1286 FLD3, 16, 1287 } 1288dsdt.asl 14: Offset (0), 1289Remark 2158 - ^ Unnecessary/redundant use of Offset 1290operator 1291 1292dsdt.asl 16: Offset (4), 1293Remark 2158 - ^ Unnecessary/redundant use of Offset 1294operator 1295 1296---------------------------------------- 129710 August 2018. Summary of changes for version 20180810: 1298 1299 13001) ACPICA kernel-resident subsystem: 1301 1302Initial ACPI table loading: Attempt to continue loading ACPI tables 1303regardless of malformed AML. Since migrating table initialization to the 1304new module-level code support, the AML interpreter rejected tables upon 1305any ACPI error encountered during table load. This is a problem because 1306non-serious ACPI errors during table load do not necessarily mean that 1307the entire definition block (DSDT or SSDT) is invalid. This change 1308improves the table loading by ignoring some types of errors that can be 1309generated by incorrect AML. This can range from object type errors, scope 1310errors, and index errors. 1311 1312Suspend/Resume support: Update to stop unconditionally clearing ACPI IRQs 1313during suspend/resume. The status of ACPI events is no longer cleared 1314when entering the ACPI S5 system state (power off) which caused some 1315systems to power up immediately after turning off power in certain 1316situations. This was a functional regression. It was fixed by clearing 1317the status of all ACPI events again when entering S5 (for system-wide 1318suspend or hibernation the clearing of the status of all events is not 1319desirable, as it might cause the kernel to miss wakeup events sometimes). 1320Rafael Wysocki. 1321 1322 13232) iASL Compiler/Disassembler and Tools: 1324 1325AcpiExec: Enhanced the -fi option (Namespace initialization file). Field 1326elements listed in the initialization file were previously initialized 1327after the table load and before executing module-level code blocks. 1328Recent changes in the module-level code support means that the table load 1329becomes a large control method execution. If fields are used within 1330module-level code and we are executing with the -fi option, the 1331initialization values were used to initialize the namespace object(s) 1332only after the table was finished loading. This change Provides an early 1333initialization of objects specified in the initialization file so that 1334field unit values are populated during the table load (not after the 1335load). 1336 1337AcpiExec: Fixed a small memory leak regression that could result in 1338warnings during exit of the utility. These warnings were similar to 1339these: 1340 0002D690 Length 0x0006 nsnames-0502 [Not a Descriptor - too small] 1341 0002CD70 Length 0x002C utcache-0453 [Operand] Integer RefCount 0x0001 1342 1343---------------------------------------- 134429 June 2018. Summary of changes for version 20180629: 1345 1346 13471) iASL Compiler/Disassembler and Tools: 1348 1349iASL: Fixed a regression related to the use of the ASL External 1350statement. Error checking for the use of the External() statement has 1351been relaxed. Previously, a restriction on the use of External meant that 1352the referenced named object was required to be defined in a different 1353table (an SSDT). Thus it would be an error to declare an object as an 1354external and then define the same named object in the same table. For 1355example: 1356 DefinitionBlock (...) 1357 { 1358 External (DEV1) 1359 Device (DEV1){...} // This was an error 1360 } 1361However, this behavior has caused regressions in some existing ASL code, 1362because there is code that depends on named objects and externals (with 1363the same name) being declared in the same table. This change will allow 1364the ASL code above to compile without errors or warnings. 1365 1366iASL: Implemented ASL language extensions for four operators to make some 1367of their arguments optional instead of required: 1368 1) Field (RegionName, AccessType, LockRule, UpdateRule) 1369 2) BankField (RegionName, BankName, BankValue, 1370 AccessType, LockRule, UpdateRule) 1371 3) IndexField (IndexName, DataName, 1372 AccessType, LockRule, UpdateRule) 1373For the Field operators above, the AccessType, LockRule, and UpdateRule 1374are now optional arguments. The default values are: 1375 AccessType: AnyAcc 1376 LockRule: NoLock 1377 UpdateRule: Preserve 1378 4) Mutex (MutexName, SyncLevel) 1379For this operator, the SyncLevel argument is now optional. This argument 1380is rarely used in any meaningful way by ASL code, and thus it makes sense 1381to make it optional. The default value is: 1382 SyncLevel: 0 1383 1384iASL: Attempted use of the ASL Unload() operator now results in the 1385following warning: 1386 "Unload is not supported by all operating systems" 1387This is in fact very true, and the Unload operator may be completely 1388deprecated in the near future. 1389 1390AcpiExec: Fixed a regression for the -fi option (Namespace initialization 1391file. Recent changes in the ACPICA module-level code support altered the 1392table load/initialization sequence . This means that the table load has 1393become a large method execution of the table itself. If Operation Region 1394Fields are used within any module-level code and the -fi option was 1395specified, the initialization values were populated only after the table 1396had completely finished loading (and thus the module-level code had 1397already been executed). This change moves the initialization of objects 1398listed in the initialization file to before the table is executed as a 1399method. Field unit values are now initialized before the table execution 1400is performed. 1401 1402---------------------------------------- 140331 May 2018. Summary of changes for version 20180531: 1404 1405 14061) ACPICA kernel-resident Subsystem: 1407 1408Implemented additional support to help ensure that a DSDT or SSDT is 1409fully loaded even if errors are incurred during the load. The majority of 1410the problems that are seen is the failure of individual AML operators 1411that occur during execution of any module-level code (MLC) existing in 1412the table. This support adds a mechanism to abort the current ASL 1413statement (AML opcode), emit an error message, and to simply move on to 1414the next opcode -- instead of aborting the entire table load. This is 1415different than the execution of a control method where the entire method 1416is aborted upon any error. The goal is to perform a very "best effort" to 1417load the ACPI tables. The most common MLC errors that have been seen in 1418the field are direct references to unresolved ASL/AML symbols (referenced 1419directly without the use of the CondRefOf operator to validate the 1420symbol). This new ACPICA behavior is now compatible with other ACPI 1421implementations. 1422 1423Interpreter: The Unload AML operator is no longer supported for the 1424reasons below. An AE_NOT_IMPLEMENTED exception is returned. 14251) A correct implementation on at least some hosts may not be possible. 14262) Other ACPI implementations do not correctly/fully support it. 14273) It requires host device driver support which is not known to exist. 1428 (To properly support namespace unload out from underneath.) 14294) This AML operator has never been seen in the field. 1430 1431Parser: Added a debug option to dump AML parse sub-trees as they are 1432being executed. Used with ACPI_DEBUG_PRINT, the enabling debug level is 1433ACPI_DB_PARSE_TREES. 1434 1435Debugger: Reduced the verbosity for errors incurred during table load and 1436module-level code execution. 1437 1438Completed an investigation into adding a namespace node "owner list" 1439instead of the current "owner ID" associated with namespace nodes. This 1440list would link together all nodes that are owned by an individual 1441control method. The purpose would be to enhance control method execution 1442by speeding up cleanup during method exit (all namespace nodes created by 1443a method are deleted upon method termination.) Currently, the entire 1444namespace must be searched for matching owner IDs if (and only if) the 1445method creates named objects outside of the local scope. However, by far 1446the most common case is that methods create objects locally, not outside 1447the method scope. There is already an ACPICA optimization in place that 1448only searches the entire namespace in the rare case of a method creating 1449objects elsewhere in the namespace. Therefore, it is felt that the 1450overhead of adding an additional pointer to each namespace node to 1451implement the owner list makes this feature unnecessary. 1452 1453 14542) iASL Compiler/Disassembler and Tools: 1455 1456iASL, Disassembler, and Template generator: Implemented support for 1457Revision D of the IORT table. Adds a new subtable that is used to specify 1458SMMUv3 PMCGs. rmurphy-arm. 1459 1460Disassembler: Restored correct table header validation for the "special" 1461ACPI tables -- RSDP and FACS. These tables do not contain a standard ACPI 1462table header and must be special-cased. This was a regression that has 1463been present for apparently a long time. 1464 1465AcpiExec: Reduced verbosity of the local exception handler implemented 1466within acpiexec. This handler is invoked by ACPICA upon any exceptions 1467generated during control method execution. A new option was added: -vh 1468restores the original verbosity level if desired. 1469 1470AcpiExec: Changed the default base from decimal to hex for the -x option 1471(set debug level). This simplifies the use of this option and matches the 1472behavior of the corresponding iASL -x option. 1473 1474AcpiExec: Restored a force-exit on multiple control-c (sigint) 1475interrupts. This allows program termination even if other issues cause 1476the control-c to fail. 1477 1478ASL test suite (ASLTS): Added tests for the recently implemented package 1479element resolution mechanism that allows forward references to named 1480objects from individual package elements (this mechanism provides 1481compatibility with other ACPI implementations.) 1482 1483 1484---------------------------------------- 14858 May 2018. Summary of changes for version 20180508: 1486 1487 14881) ACPICA kernel-resident subsystem: 1489 1490Completed the new (recently deployed) package resolution mechanism for 1491the Load and LoadTable ASL/AML operators. This fixes a regression that 1492was introduced in version 20180209 that could result in an 1493AE_AML_INTERNAL exception during the loading of a dynamic ACPI/AML table 1494(SSDT) that contains package objects. 1495 1496 14972) iASL Compiler/Disassembler and Tools: 1498 1499AcpiDump and AcpiXtract: Implemented support for ACPI tables larger than 15001 MB. This change allows for table offsets within the acpidump file to be 1501up to 8 characters. These changes are backwards compatible with existing 1502acpidump files. 1503 1504 1505---------------------------------------- 150627 April 2018. Summary of changes for version 20180427: 1507 1508 15091) ACPICA kernel-resident subsystem: 1510 1511Debugger: Added support for Package objects in the "Test Objects" 1512command. This command walks the entire namespace and evaluates all named 1513data objects (Integers, Strings, Buffers, and now Packages). 1514 1515Improved error messages for the namespace root node. Originally, the root 1516was referred to by the confusing string "\___". This has been replaced by 1517"Namespace Root" for clarification. 1518 1519Fixed a potential infinite loop in the AcpiRsDumpByteList function. Colin 1520Ian King <colin.king@canonical.com>. 1521 1522 15232) iASL Compiler/Disassembler and Tools: 1524 1525iASL: Implemented support to detect and flag illegal forward references. 1526For compatibility with other ACPI implementations, these references are 1527now illegal at the root level of the DSDT or SSDTs. Forward references 1528have always been illegal within control methods. This change should not 1529affect existing ASL/AML code because of the fact that these references 1530have always been illegal in the other ACPI implementation. 1531 1532iASL: Added error messages for the case where a table OEM ID and OEM 1533TABLE ID strings are longer than the ACPI-defined length. Previously, 1534these strings were simply silently truncated. 1535 1536iASL: Enhanced the -tc option (which creates an AML hex file in C, 1537suitable for import into a firmware project): 1538 1) Create a unique name for the table, to simplify use of multiple 1539SSDTs. 1540 2) Add a protection #ifdef in the file, similar to a .h header file. 1541With assistance from Sami Mujawar, sami.mujawar@arm.com and Evan Lloyd, 1542evan.lloyd@arm.com 1543 1544AcpiExec: Added a new option, -df, to disable the local fault handler. 1545This is useful during debugging, where it may be desired to drop into a 1546debugger on a fault. 1547 1548---------------------------------------- 154913 March 2018. Summary of changes for version 20180313: 1550 1551 15521) ACPICA kernel-resident subsystem: 1553 1554Implemented various improvements to the GPE support: 1555 15561) Dispatch all active GPEs at initialization time so that no GPEs are 1557lost. 15582) Enable runtime GPEs earlier. Some systems expect GPEs to be enabled 1559before devices are enumerated. 15603) Don't unconditionally clear ACPI IRQs during suspend/resume, so that 1561IRQs are not lost. 15624) Add parallel GPE handling to eliminate the possibility of dispatching 1563the same GPE twice. 15645) Dispatch any pending GPEs after enabling for the first time. 1565 1566AcpiGetObjectInfo - removed support for the _STA method. This was causing 1567problems on some platforms. 1568 1569Added a new _OSI string, "Windows 2017.2". 1570 1571Cleaned up and simplified the module-level code support. These changes 1572are in preparation for the eventual removal of the legacy MLC support 1573(deferred execution), replaced by the new MLC architecture which executes 1574the MLC as a table is loaded (DSDT/SSDTs). 1575 1576Changed a compile-time option to a runtime option. Changes the option to 1577ignore ACPI table load-time package resolution errors into a runtime 1578option. Used only for platforms that generate many AE_NOT_FOUND errors 1579during boot. AcpiGbl_IgnorePackageResolutionErrors. 1580 1581Fixed the ACPI_ERROR_NAMESPACE macro. This change involves putting some 1582ACPI_ERROR_NAMESPACE parameters inside macros. By doing so, we avoid 1583compilation errors from unused variables (seen with some compilers). 1584 1585 15862) iASL Compiler/Disassembler and Tools: 1587 1588ASLTS: parallelized execution in order to achieve an (approximately) 2X 1589performance increase. 1590 1591ASLTS: Updated to use the iASL __LINE__ and __METHOD__ macros. Improves 1592error reporting. 1593 1594---------------------------------------- 159509 February 2018. Summary of changes for version 20180209: 1596 1597 15981) ACPICA kernel-resident subsystem: 1599 1600Completed the final integration of the recent changes to Package Object 1601handling and the module-level AML code support. This allows forward 1602references from individual package elements when the package object is 1603declared from within module-level code blocks. Provides compatibility 1604with other ACPI implementations. 1605 1606The new architecture for the AML module-level code has been completed and 1607is now the default for the ACPICA code. This new architecture executes 1608the module-level code in-line as the ACPI table is loaded/parsed instead 1609of the previous architecture which deferred this code until after the 1610table was fully loaded. This solves some ASL code ordering issues and 1611provides compatibility with other ACPI implementations. At this time, 1612there is an option to fallback to the earlier architecture, but this 1613support is deprecated and is planned to be completely removed later this 1614year. 1615 1616Added a compile-time option to ignore AE_NOT_FOUND exceptions during 1617resolution of named reference elements within Package objects. Although 1618this is potentially a serious problem, it can generate a lot of 1619noise/errors on platforms whose firmware carries around a bunch of unused 1620Package objects. To disable these errors, define 1621ACPI_IGNORE_PACKAGE_RESOLUTION_ERRORS in the OS-specific header. All 1622errors are always reported for ACPICA applications such as AcpiExec. 1623 1624Fixed a regression related to the explicit type-conversion AML operators 1625(ToXXXX). The regression was introduced early in 2017 but was not seen 1626until recently because these operators are not fully supported by other 1627ACPI implementations and are thus rarely used by firmware developers. The 1628operators are defined by the ACPI specification to not implement the 1629"implicit result object conversion". The regression incorrectly 1630introduced this object conversion for the following explicit conversion 1631operators: 1632 ToInteger 1633 ToString 1634 ToBuffer 1635 ToDecimalString 1636 ToHexString 1637 ToBCD 1638 FromBCD 1639 1640 16412) iASL Compiler/Disassembler and Tools: 1642 1643iASL: Fixed a problem with the compiler constant folding feature as 1644related to the ToXXXX explicit conversion operators. These operators do 1645not support the "implicit result object conversion" by definition. Thus, 1646ASL expressions that use these operators cannot be folded to a simple 1647Store operator because Store implements the implicit conversion. This 1648change uses the CopyObject operator for the ToXXXX operator folding 1649instead. CopyObject is defined to not implement implicit result 1650conversions and is thus appropriate for folding the ToXXXX operators. 1651 1652iASL: Changed the severity of an error condition to a simple warning for 1653the case where a symbol is declared both locally and as an external 1654symbol. This accommodates existing ASL code. 1655 1656AcpiExec: The -ep option to enable the new architecture for module-level 1657code has been removed. It is replaced by the -dp option which instead has 1658the opposite effect: it disables the new architecture (the default) and 1659enables the legacy architecture. When the legacy code is removed in the 1660future, the -dp option will be removed also. 1661 1662---------------------------------------- 166305 January 2018. Summary of changes for version 20180105: 1664 1665 16661) ACPICA kernel-resident subsystem: 1667 1668Updated all copyrights to 2018. This affects all source code modules. 1669 1670Fixed a possible build error caused by an unresolved reference to the 1671AcpiUtSafeStrncpy function. 1672 1673Removed NULL pointer arithmetic in the various pointer manipulation 1674macros. All "(void *) NULL" constructs are converted to "(void *) 0". 1675This eliminates warnings/errors in newer C compilers. Jung-uk Kim. 1676 1677Added support for A32 ABI compilation, which uses the ILP32 model. Anuj 1678Mittal. 1679 1680 16812) iASL Compiler/Disassembler and Tools: 1682 1683ASLTS: Updated all copyrights to 2018. 1684 1685Tools: Updated all signon copyrights to 2018. 1686 1687AcpiXtract: Fixed a regression related to ACPI table signatures where the 1688signature was truncated to 3 characters (instead of 4). 1689 1690AcpiExec: Restore the original terminal mode after the use of the -v and 1691-vd options. 1692 1693ASLTS: Deployed the iASL __METHOD__ macro across the test suite. 1694 1695---------------------------------------- 169614 December 2017. Summary of changes for version 20171214: 1697 1698 16991) ACPICA kernel-resident subsystem: 1700 1701Fixed a regression in the external (public) AcpiEvaluateObjectTyped 1702interface where the optional "pathname" argument had inadvertently become 1703a required argument returning an error if omitted (NULL pointer 1704argument). 1705 1706Fixed two possible memory leaks related to the recently developed "late 1707resolution" of reference objects within ASL Package Object definitions. 1708 1709Added two recently defined _OSI strings: "Windows 2016" and "Windows 17102017". Mario Limonciello. 1711 1712Implemented and deployed a safer version of the C library function 1713strncpy: AcpiUtSafeStrncpy. The intent is to at least prevent the 1714creation of unterminated strings as a possible result of a standard 1715strncpy. 1716 1717Cleaned up and restructured the global variable file (acglobal.h). There 1718are many changes, but no functional changes. 1719 1720 17212) iASL Compiler/Disassembler and Tools: 1722 1723iASL Table Compiler: Fixed a problem with the DBG2 ACPI table where the 1724optional OemData field at the end of the table was incorrectly required 1725for proper compilation. It is now correctly an optional field. 1726 1727ASLTS: The entire suite was converted from standard ASL to the ASL+ 1728language, using the ASL-to-ASL+ converter which is integrated into the 1729iASL compiler. A binary compare of all output files has verified the 1730correctness of the conversion. 1731 1732iASL: Fixed the source code build for platforms where "char" is unsigned. 1733This affected the iASL lexer only. Jung-uk Kim. 1734 1735---------------------------------------- 173610 November 2017. Summary of changes for version 20171110: 1737 1738 17391) ACPICA kernel-resident subsystem: 1740 1741This release implements full support for ACPI 6.2A: 1742 NFIT - Added a new subtable, "Platform Capabilities Structure" 1743No other changes to ACPICA were required, since ACPI 6.2A is primarily an 1744errata release of the specification. 1745 1746Other ACPI table changes: 1747 IORT: Added the SMMUv3 Device ID mapping index. Hanjun Guo 1748 PPTT: Added cache attribute flag definitions to actbl1.h. Jeremy 1749Linton 1750 1751Utilities: Modified the string/integer conversion functions to use 1752internal 64-bit divide support instead of a native divide. On 32-bit 1753platforms, a 64-bit divide typically requires a library function which 1754may not be present in the build (kernel or otherwise). 1755 1756Implemented a targeted error message for timeouts returned from the 1757Embedded Controller device driver. This is seen frequently enough to 1758special-case an AE_TIME returned from an EC operation region access: 1759 "Timeout from EC hardware or EC device driver" 1760 1761Changed the "ACPI Exception" message prefix to "ACPI Error" so that all 1762runtime error messages have the identical prefix. 1763 1764 17652) iASL Compiler/Disassembler and Tools: 1766 1767AcpiXtract: Fixed a problem with table header detection within the 1768acpidump file. Processing a table could be ended early if a 0x40 (@) 1769appears in the original binary table, resulting in the @ symbol appearing 1770in the decoded ASCII field at the end of the acpidump text line. The 1771symbol caused acpixtract to incorrectly think it had reached the end of 1772the current table and the beginning of a new table. 1773 1774AcpiXtract: Added an option (-f) to ignore some errors during table 1775extraction. This initial implementation ignores non-ASCII and non- 1776printable characters found in the acpidump text file. 1777 1778TestSuite(ASLTS)/AcpiExec: Fixed and restored the memory usage statistics 1779for ASLTS. This feature is used to track memory allocations from 1780different memory caches within the ACPICA code. At the end of an ASLTS 1781run, these memory statistics are recorded and stored in a log file. 1782 1783Debugger (user-space version): Implemented a simple "Background" command. 1784Creates a new thread to execute a control method in the background, while 1785control returns to the debugger prompt to allow additional commands. 1786 Syntax: Background <Namepath> [Arguments] 1787 1788---------------------------------------- 178929 September 2017. Summary of changes for version 20170929: 1790 1791 17921) ACPICA kernel-resident subsystem: 1793 1794Redesigned and implemented an improved ASL While() loop timeout 1795mechanism. This mechanism is used to prevent infinite loops in the kernel 1796AML interpreter caused by either non-responsive hardware or incorrect AML 1797code. The new implementation uses AcpiOsGetTimer instead of a simple 1798maximum loop count, and is thus more accurate and constant across 1799different machines. The default timeout is currently 30 seconds, but this 1800may be adjusted later. 1801 1802Renamed the ACPI_AML_INFINITE_LOOP exception to AE_AML_LOOP_TIMEOUT to 1803better reflect the new implementation of the loop timeout mechanism. 1804 1805Updated the AcpiGetTimerDuration interface to cleanup the 64-bit support 1806and to fix an off-by-one error. Jung-uk Kim. 1807 1808Fixed an EFI build problem by updating the makefiles to for a new file 1809that was added, utstrsuppt.c 1810 1811 18122) iASL Compiler/Disassembler and Tools: 1813 1814Implemented full support for the PDTT, SDEV, and TPM2 ACPI tables. This 1815includes support in the table disassembler, compiler, and template 1816generator. 1817 1818iASL: Added an exception for an illegal type of recursive method 1819invocation. If a method creates named objects, the first recursive call 1820will fail at runtime. This change adds an error detection at compile time 1821to catch the problem up front. Note: Marking such a method as 1822"serialized" will not help with this problem, because the same thread can 1823acquire the method mutex more than once. Example compiler and runtime 1824output: 1825 1826 Method (MTH1) 1827 { 1828 Name (INT1, 1) 1829 MTH1 () 1830 } 1831 1832 dsdt.asl 22: MTH1 () 1833 Error 6152 - ^ Illegal recursive call to method 1834 that creates named objects (MTH1) 1835 1836Previous runtime exception: 1837 ACPI Error: [INT1] Namespace lookup failure, 1838 AE_ALREADY_EXISTS (20170831/dswload2-465) 1839 1840iASL: Updated support for External() opcodes to improve namespace 1841management and error detection. These changes are related to issues seen 1842with multiple-segment namespace pathnames within External declarations, 1843such as below: 1844 1845 External(\_SB.PCI0.GFX0, DeviceObj) 1846 External(\_SB.PCI0.GFX0.ALSI) 1847 1848iASL: Implemented support for multi-line error/warning messages. This 1849enables more detailed and helpful error messages as below, from the 1850initial deployment for the duplicate names error: 1851 1852 DSDT.iiii 1692: Device(PEG2) { 1853 Error 6074 - ^ Name already exists in scope 1854(PEG2) 1855 1856 Original name creation/declaration below: 1857 DSDT.iiii 93: External(\_SB.PCI0.PEG2, DeviceObj) 1858 1859AcpiXtract: Added additional flexibility to support differing input hex 1860dump formats. Specifically, hex dumps that contain partial disassembly 1861and/or comments within the ACPI table data definition. There exist some 1862dump utilities seen in the field that create this type of hex dump (such 1863as Simics). For example: 1864 1865 DSDT @ 0xdfffd0c0 (10999 bytes) 1866 Signature DSDT 1867 Length 10999 1868 Revision 1 1869 Checksum 0xf3 (Ok) 1870 OEM_ID BXPC 1871 OEM_table_id BXDSDT 1872 OEM_revision 1 1873 Creator_id 1280593481 1874 Creator_revision 537399345 1875 0000: 44 53 44 54 f7 2a 00 00 01 f3 42 58 50 43 00 00 1876 ... 1877 2af0: 5f 4c 30 46 00 a4 01 1878 1879Test suite: Miscellaneous changes/fixes: 1880 More cleanup and simplification of makefiles 1881 Continue compilation of test cases after a compile failure 1882 Do not perform binary compare unless both files actually exist 1883 1884iASL: Performed some code/module restructuring. Moved all memory 1885allocation functions to new modules. Two new files, aslallocate.c and 1886aslcache.c 1887 1888---------------------------------------- 188931 August 2017. Summary of changes for version 20170831: 1890 1891 18921) ACPICA kernel-resident subsystem: 1893 1894Implemented internal support for full 64-bit addresses that appear in all 1895Generic Address Structure (GAS) structures. Previously, only the lower 32 1896bits were used. Affects the use of GAS structures in the FADT and other 1897tables, as well as the GAS structures passed to the AcpiRead and 1898AcpiWrite public external interfaces that are used by drivers. Lv Zheng. 1899 1900Added header support for the PDTT ACPI table (Processor Debug Trigger 1901Table). Full support in the iASL Data Table Compiler and disassembler is 1902forthcoming. 1903 1904 19052) iASL Compiler/Disassembler and Tools: 1906 1907iASL/Disassembler: Fixed a problem with the PPTT ACPI table (Processor 1908Properties Topology Table) where a flag bit was specified in the wrong 1909bit position ("Line Size Valid", bit 6). 1910 1911iASL: Implemented support for Octal integer constants as defined by the 1912ASL language grammar, per the ACPI specification. Any integer constant 1913that starts with a zero is an octal constant. For example, 1914 Store (037777, Local0) /* Octal constant */ 1915 Store (0x3FFF, Local0) /* Hex equivalent */ 1916 Store (16383, Local0) /* Decimal equivalent */ 1917 1918iASL: Improved overflow detection for 64-bit string conversions during 1919compilation of integer constants. "Overflow" in this case means a string 1920that represents an integer that is too large to fit into a 64-bit value. 1921Any 64-bit constants within a 32-bit DSDT or SSDT are still truncated to 1922the low-order 32 bits with a warning, as previously implemented. Several 1923new exceptions are defined that indicate a 64-bit overflow, as well as 1924the base (radix) that was used during the attempted conversion. Examples: 1925 Local0 = 0xAAAABBBBCCCCDDDDEEEEFFFF // AE_HEX_OVERFLOW 1926 Local0 = 01111222233334444555566667777 // AE_OCTAL_OVERFLOW 1927 Local0 = 11112222333344445555666677778888 // AE_DECIMAL_OVERFLOW 1928 1929iASL: Added a warning for the case where a ResourceTemplate is declared 1930with no ResourceDescriptor entries (coded as "ResourceTemplate(){}"). In 1931this case, the resulting template is created with a single END_TAG 1932descriptor, which is essentially useless. 1933 1934iASL: Expanded the -vw option (ignore specific warnings/remarks) to 1935include compilation error codes as well. 1936 1937---------------------------------------- 193828 July 2017. Summary of changes for version 20170728: 1939 1940 19411) ACPICA kernel-resident subsystem: 1942 1943Fixed a regression seen with small resource descriptors that could cause 1944an inadvertent AE_AML_NO_RESOURCE_END_TAG exception. 1945 1946AML interpreter: Implemented a new feature that allows forward references 1947from individual named references within package objects that are 1948contained within blocks of "module-level code". This provides 1949compatibility with other ACPI implementations and supports existing 1950firmware that depends on this feature. Example: 1951 1952 Name (ABCD, 1) 1953 If (ABCD) /* An If() at module-level */ 1954 { 1955 Name (PKG1, Package() 1956 { 1957 INT1 /* Forward reference to object INT1 1958*/ 1959 }) 1960 Name (INT1, 0x1234) 1961 } 1962 1963AML Interpreter: Fixed a problem with the Alias() operator where aliases 1964to some ASL objects were not handled properly. Objects affected are: 1965Mutex, Event, and OperationRegion. 1966 1967AML Debugger: Enhanced to properly handle AML Alias objects. These 1968objects have one level of indirection which was not fully supported by 1969the debugger. 1970 1971Table Manager: Added support to detect and ignore duplicate SSDTs within 1972the XSDT/RSDT. This error in the XSDT has been seen in the field. 1973 1974EFI and EDK2 support: 1975 Enabled /WX flag for MSVC builds 1976 Added support for AcpiOsStall, AcpiOsSleep, and AcpiOsGetTimer 1977 Added local support for 64-bit multiply and shift operations 1978 Added support to compile acpidump.efi on Windows 1979 Added OSL function stubs for interfaces not used under EFI 1980 1981Added additional support for the _DMA predefined name. _DMA returns a 1982buffer containing a resource template. This change add support within the 1983resource manager (AcpiWalkResourceBuffer) to walk and parse this list of 1984resource descriptors. Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> 1985 1986 19872) iASL Compiler/Disassembler and Tools: 1988 1989iASL: Fixed a problem where the internal input line buffer(s) could 1990overflow if there are very long lines in the input ASL source code file. 1991Implemented buffer management that automatically increases the size of 1992the buffers as necessary. 1993 1994iASL: Added an option (-vx) to "expect" particular remarks, warnings and 1995errors. If the specified exception is not raised during compilation, the 1996compiler emits an error. This is intended to support the ASL test suite, 1997but may be useful in other contexts. 1998 1999iASL: Implemented a new predefined macro, __METHOD__, which returns a 2000string containing the name of the current control method that is being 2001compiled. 2002 2003iASL: Implemented debugger and table compiler support for the SDEI ACPI 2004table (Software Delegated Exception Interface). James Morse 2005<james.morse@arm.com> 2006 2007Unix/Linux makefiles: Added an option to disable compile optimizations. 2008The disable occurs when the NOOPT flag is set to TRUE. 2009theracermaster@gmail.com 2010 2011Acpidump: Added support for multiple DSDT and FACS tables. This can occur 2012when there are different tables for 32-bit versus 64-bit. 2013 2014Enhanced error reporting for the ASL test suite (ASLTS) by removing 2015unnecessary/verbose text, and emit the actual line number where an error 2016has occurred. These changes are intended to improve the usefulness of the 2017test suite. 2018 2019---------------------------------------- 202029 June 2017. Summary of changes for version 20170629: 2021 2022 20231) ACPICA kernel-resident subsystem: 2024 2025Tables: Implemented a deferred ACPI table verification. This is useful 2026for operating systems where the tables cannot be verified in the early 2027initialization stage due to early memory mapping limitations on some 2028architectures. Lv Zheng. 2029 2030Tables: Removed the signature validation for dynamically loaded tables. 2031Provides compatibility with other ACPI implementations. Previously, only 2032SSDT tables were allowed, as per the ACPI specification. Now, any table 2033signature can be used via the Load() operator. Lv Zheng. 2034 2035Tables: Fixed several mutex issues that could cause errors during table 2036acquisition. Lv Zheng. 2037 2038Tables: Fixed a problem where an ACPI warning could be generated if a 2039null pointer was passed to the AcpiPutTable interface. Lv Zheng. 2040 2041Tables: Added a mechanism to handle imbalances for the AcpiGetTable and 2042AcpiPutTable interfaces. This applies to the "late stage" table loading 2043when the use of AcpiPutTable is no longer required (since the system 2044memory manager is fully running and available). Lv Zheng. 2045 2046Fixed/Reverted a regression during processing of resource descriptors 2047that contain only a single EndTag. Fixes an AE_AML_NO_RESOURCE_END_TAG 2048exception in this case. 2049 2050Headers: IORT/SMMU support: Updated the SMMU models for Revision C of the 2051I/O Remapping specification. Robin Murphy <robin.murphy@arm.com> 2052 2053Interpreter: Fixed a possible fault if an Alias operator with an invalid 2054or duplicate target is encountered during Alias creation in 2055AcpiExCreateAlias. Alex James <theracermaster@gmail.com> 2056 2057Added an option to use designated initializers for function pointers. 2058Kees Cook <keescook@google.com> 2059 2060 20612) iASL Compiler/Disassembler and Tools: 2062 2063iASL: Allow compilation of External declarations with target pathnames 2064that refer to existing named objects within the table. Erik Schmauss. 2065 2066iASL: Fixed a regression when compiling FieldUnits. Fixes an error if a 2067FieldUnit name also is declared via External in the same table. Erik 2068Schmauss. 2069 2070iASL: Allow existing scope names within pathnames used in External 2071statements. For example: 2072 External (ABCD.EFGH) // ABCD exists, but EFGH is truly external 2073 Device (ABCD) 2074 2075iASL: IORT ACPI table: Implemented changes required to decode the new 2076Proximity Domain for the SMMUv3 IORT. Disassembler and Data Table 2077compiler. Ganapatrao Kulkarni <ganapatrao.kulkarni@cavium.com> 2078 2079Disassembler: Don't abort disassembly on errors from External() 2080statements. Erik Schmauss. 2081 2082Disassembler: fixed a possible fault when one of the Create*Field 2083operators references a Resource Template. ACPICA Bugzilla 1396. 2084 2085iASL: In the source code, resolved some naming inconsistences across the 2086parsing support. Fixes confusion between "Parse Op" and "Parse Node". 2087Adds a new file, aslparseop.c 2088 2089---------------------------------------- 209031 May 2017. Summary of changes for version 20170531: 2091 2092 20930) ACPI 6.2 support: 2094 2095The ACPI specification version 6.2 has been released and is available at 2096http://uefi.org/specifications 2097 2098This version of ACPICA fully supports the ACPI 6.2 specification. Changes 2099are summarized below. 2100 2101New ACPI tables (Table Compiler/Disassembler/Templates): 2102 HMAT (Heterogeneous Memory Attributes Table) 2103 WSMT (Windows SMM Security Mitigation Table) 2104 PPTT (Processor Properties Topology Table) 2105 2106New subtables for existing ACPI tables: 2107 HEST (New subtable, Arch-deferred machine check) 2108 SRAT (New subtable, Arch-specific affinity structure) 2109 PCCT (New subtables, Extended PCC subspaces (types 3 and 4)) 2110 2111Simple updates for existing ACPI tables: 2112 BGRT (two new flag bits) 2113 HEST (New bit defined for several subtables, GHES_ASSIST) 2114 2115New Resource Descriptors and Resource macros (Compiler/Disassembler): 2116 PinConfig() 2117 PinFunction() 2118 PinGroup() 2119 PinGroupConfig() 2120 PinGroupFunction() 2121 New type for hardware error notification (section 18.3.2.9) 2122 2123New predefined names/methods (Compiler/Interpreter): 2124 _HMA (Heterogeneous Memory Attributes) 2125 _LSI (Label Storage Information) 2126 _LSR (Label Storage Read) 2127 _LSW (Label Storage Write) 2128 2129ASL grammar/macro changes (Compiler): 2130 For() ASL macro, implemented with the AML while operator 2131 Extensions to Concatenate operator 2132 Support for multiple definition blocks in same ASL file 2133 Clarification for Buffer operator 2134 Allow executable AML code underneath all scopes (Devices, etc.) 2135 Clarification/change for the _OSI return value 2136 ASL grammar update for reference operators 2137 Allow a zero-length string for AML filename in DefinitionBlock 2138 2139Miscellaneous: 2140 New device object notification value 2141 Remove a notify value (0x0C) for graceful shutdown 2142 New UUIDs for processor/cache properties and 2143 physical package property 2144 New _HID, ACPI0014 (Wireless Power Calibration Device) 2145 2146 21471) ACPICA kernel-resident subsystem: 2148 2149Added support to disable ACPI events on hardware-reduced platforms. 2150Eliminates error messages of the form "Could not enable fixed event". Lv 2151Zheng 2152 2153Fixed a problem using Device/Thermal objects with the ObjectType and 2154DerefOf ASL operators. This support had not been fully/properly 2155implemented. 2156 2157Fixed a problem where if a Buffer object containing a resource template 2158was longer than the actual resource template, an error was generated -- 2159even though the AML is legal. This case has been seen in the field. 2160 2161Fixed a problem with the header definition of the MADT PCAT_COMPAT flag. 2162The values for DUAL_PIC and MULTIPLE_APIC were reversed. 2163 2164Added header file changes for the TPM2 ACPI table. Update to new version 2165of the TCG specification. Adds a new TPM2 subtable for ARM SMC. 2166 2167Exported the external interfaces AcpiAcquireMutex and AcpiReleaseMutex. 2168These interfaces are intended to be used only in conjunction with the 2169predefined _DLM method (Device Lock Method). "This object appears in a 2170device scope when AML access to the device must be synchronized with the 2171OS environment". 2172 2173Example Code and Data Size: These are the sizes for the OS-independent 2174acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2175debug version of the code includes the debug output trace mechanism and 2176has a much larger code and data size. 2177 2178 Current Release: 2179 Non-Debug Version: 143.1K Code, 60.0K Data, 203.1K Total 2180 Debug Version: 204.0K Code, 84.3K Data, 288.3K Total 2181 Previous Release: 2182 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total 2183 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total 2184 2185 21862) iASL Compiler/Disassembler and Tools: 2187 2188iASL: Fixed a problem where an External() declaration could not refer to 2189a Field Unit. Erik Schmauss. 2190 2191Disassembler: Improved support for the Switch/Case operators. This 2192feature will disassemble AML code back to the original Switch operators 2193when possible, instead of an If..Else sequence. David Box 2194 2195iASL and disassembler: Improved the handling of multiple extraneous 2196parentheses for both ASL input and disassembled ASL output. 2197 2198Improved the behavior of the iASL compiler and disassembler to detect 2199improper use of external declarations 2200 2201Disassembler: Now aborts immediately upon detection of an unknown AML 2202opcode. The AML parser has no real way to recover from this, and can 2203result in the creation of an ill-formed parse tree that causes errors 2204later during the disassembly. 2205 2206All tools: Fixed a problem where the Unix application OSL did not handle 2207control-c correctly. For example, a control-c could incorrectly wake the 2208debugger. 2209 2210AcpiExec: Improved the Control-C handling and added a handler for 2211segmentation faults (SIGSEGV). Supports both Windows and Unix-like 2212environments. 2213 2214Reduced the verbosity of the generic unix makefiles. Previously, each 2215compilation displayed the full set of compiler options. This has been 2216eliminated as the options are easily inspected within the makefiles. Each 2217compilation now results in a single line of output. 2218 2219---------------------------------------- 222003 March 2017. Summary of changes for version 20170303: 2221 2222 22230) ACPICA licensing: 2224 2225The licensing information at the start of each source code module has 2226been updated. In addition to the Intel license, the dual GPLv2/BSD 2227license has been added for completeness. Now, a single version of the 2228source code should be suitable for all ACPICA customers. This is the 2229major change for this release since it affects all source code modules. 2230 2231 22321) ACPICA kernel-resident subsystem: 2233 2234Fixed two issues with the common asltypes.h header that could cause 2235problems in some environments: (Kim Jung-uk) 2236 Removed typedef for YY_BUFFER_STATE ? 2237 Fixes an error with earlier versions of Flex. 2238 Removed use of FILE typedef (which is only defined in stdio.h) 2239 2240 22412) iASL Compiler/Disassembler and Tools: 2242 2243Disassembler: fixed a regression introduced in 20170224. A fix for a 2244memory leak related to resource descriptor tags (names) could fault when 2245the disassembler was generated with 64-bit compilers. 2246 2247The ASLTS test suite has been updated to implement a new testing 2248architecture. During generation of the suite from ASL source, both the 2249ASL and ASL+ compilers are now validated, as well as the disassembler 2250itself (Erik Schmauss). The architecture executes as follows: 2251 2252 For every ASL source module: 2253 Compile (legacy ASL compilation) 2254 Disassemble the resulting AML to ASL+ source code 2255 Compile the new ASL+ module 2256 Perform a binary compare on the legacy AML and the new ASL+ AML 2257 The ASLTS suite then executes normally using the AML binaries. 2258 2259---------------------------------------- 226024 February 2017. Summary of changes for version 20170224: 2261 2262 22631) ACPICA kernel-resident subsystem: 2264 2265Interpreter: Fixed two issues with the control method return value auto- 2266repair feature, where an attempt to double-delete an internal object 2267could result in an ACPICA warning (for _CID repair and others). No fault 2268occurs, however, because the attempted deletion (actually a release to an 2269internal cache) is detected and ignored via object poisoning. 2270 2271Debugger: Fixed an AML interpreter mutex issue during the single stepping 2272of control methods. If certain debugger commands are executed during 2273stepping, a mutex acquire/release error could occur. Lv Zheng. 2274 2275Fixed some issues generating ACPICA with the Intel C compiler by 2276restoring the original behavior and compiler-specific include file in 2277acenv.h. Lv Zheng. 2278 2279Example Code and Data Size: These are the sizes for the OS-independent 2280acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2281debug version of the code includes the debug output trace mechanism and 2282has a much larger code and data size. 2283 2284 Current Release: 2285 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total 2286 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total 2287 Previous Release: 2288 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 2289 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 2290 2291 22922) iASL Compiler/Disassembler and Tools: 2293 2294iASL/Disassembler: A preliminary version of a new ASL-to-ASL+ conversion 2295tool has been designed, implemented, and included in this release. The 2296key feature of this utility is that the original comments within the 2297input ASL file are preserved during the conversion process, and included 2298within the converted ASL+ file -- thus creating a transparent conversion 2299of existing ASL files to ASL+ (ASL 2.0). Erik Schmauss. 2300 2301 Usage: iasl -ca <ASL-filename> // Output is a .dsl file with 2302converted code 2303 2304iASL/Disassembler: Improved the detection and correct disassembly of 2305Switch/Case operators. This feature detects sequences of if/elseif/else 2306operators that originated from ASL Switch/Case/Default operators and 2307emits the original operators. David Box. 2308 2309iASL: Improved the IORT ACPI table support in the following areas. Lv 2310Zheng: 2311 Clear MappingOffset if the MappingCount is zero. 2312 Fix the disassembly of the SMMU GSU interrupt offset. 2313 Update the template file for the IORT table. 2314 2315Disassembler: Enhanced the detection and disassembly of resource 2316template/descriptor within a Buffer object. An EndTag descriptor is now 2317required to have a zero second byte, since all known ASL compilers emit 2318this. This helps eliminate incorrect decisions when a buffer is 2319disassembled (false positives on resource templates). 2320 2321---------------------------------------- 232219 January 2017. Summary of changes for version 20170119: 2323 2324 23251) General ACPICA software: 2326 2327Entire source code base: Added the 2017 copyright to all source code 2328legal/licensing module headers and utility/tool signons. This includes 2329the standard Linux dual-license header. This affects virtually every file 2330in the ACPICA core subsystem, iASL compiler, all ACPICA utilities, and 2331the ACPICA test suite. 2332 2333 23342) iASL Compiler/Disassembler and Tools: 2335 2336iASL: Removed/fixed an inadvertent remark when a method argument 2337containing a reference is used as a target operand within the method (and 2338never used as a simple argument), as in the example below. Jeffrey Hugo. 2339 2340 dsdt.asl 1507: Store(0x1, Arg0) 2341 Remark 2146 - ^ Method Argument is never used (Arg0) 2342 2343All tools: Removed the bit width of the compiler that generated the tool 2344from the common signon for all user space tools. This proved to be 2345confusing and unnecessary. This includes similar removal of HARDWARE_NAME 2346from the generic makefiles (Thomas Petazzoni). Example below. 2347 2348 Old: 2349 ASL+ Optimizing Compiler version 20170119-32 2350 ASL+ Optimizing Compiler version 20170119-64 2351 2352 New: 2353 ASL+ Optimizing Compiler version 20170119 2354 2355---------------------------------------- 235622 December 2016. Summary of changes for version 20161222: 2357 2358 23591) ACPICA kernel-resident subsystem: 2360 2361AML Debugger: Implemented a new mechanism to simplify and enhance 2362debugger integration into all environments, including kernel debuggers 2363and user-space utilities, as well as remote debug services. This 2364mechanism essentially consists of new OSL interfaces to support debugger 2365initialization/termination, as well as wait/notify interfaces to perform 2366the debugger handshake with the host. Lv Zheng. 2367 2368 New OSL interfaces: 2369 AcpiOsInitializeDebugger (void) 2370 AcpiOsTerminateDebugger (void) 2371 AcpiOsWaitCommandReady (void) 2372 AcpiOsNotifyCommandComplete (void) 2373 2374 New OS services layer: 2375 osgendbg.c -- Example implementation, and used for AcpiExec 2376 2377Update for Generic Address Space (GAS) support: Although the AccessWidth 2378and/or BitOffset fields of the GAS are not often used, this change now 2379fully supports these fields. This affects the internal support for FADT 2380registers, registers in other ACPI data tables, and the AcpiRead and 2381AcpiWrite public interfaces. Lv Zheng. 2382 2383Sleep support: In order to simplify integration of ACPI sleep for the 2384various host operating systems, a new OSL interface has been introduced. 2385AcpiOsEnterSleep allows the host to perform any required operations 2386before the final write to the sleep control register(s) is performed by 2387ACPICA. Lv Zheng. 2388 2389 New OSL interface: 2390 AcpiOsEnterSleep(SleepState, RegisterAValue, RegisterBValue) 2391 2392 Called from these internal interfaces: 2393 AcpiHwLegacySleep 2394 AcpiHwExtendedSleep 2395 2396EFI support: Added a very small EFI/ACPICA example application. Provides 2397a simple demo for EFI integration, as well as assisting with resolution 2398of issues related to customer ACPICA/EFI integration. Lv Zheng. See: 2399 2400 source/tools/efihello/efihello.c 2401 2402Local C library: Implemented several new functions to enhance ACPICA 2403portability, for environments where these clib functions are not 2404available (such as EFI). Lv Zheng: 2405 putchar 2406 getchar 2407 strpbrk 2408 strtok 2409 memmove 2410 2411Fixed a regression where occasionally a valid resource descriptor was 2412incorrectly detected as invalid at runtime, and a 2413AE_AML_NO_RESOURCE_END_TAG was returned. 2414 2415Fixed a problem with the recently implemented support that enables 2416control method invocations as Target operands to many ASL operators. 2417Warnings of this form: "Needed type [Reference], found [Processor]" were 2418seen at runtime for some method invocations. 2419 2420Example Code and Data Size: These are the sizes for the OS-independent 2421acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2422debug version of the code includes the debug output trace mechanism and 2423has a much larger code and data size. 2424 2425 Current Release: 2426 Non-Debug Version: 141.5K Code, 58.5K Data, 200.0K Total 2427 Debug Version: 201.7K Code, 82.7K Data, 284.4K Total 2428 Previous Release: 2429 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total 2430 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total 2431 2432 24332) iASL Compiler/Disassembler and Tools: 2434 2435Disassembler: Enhanced output by adding the capability to detect and 2436disassemble ASL Switch/Case statements back to the original ASL source 2437code instead of if/else blocks. David Box. 2438 2439AcpiHelp: Split a large file into separate files based upon 2440functionality/purpose. New files are: 2441 ahaml.c 2442 ahasl.c 2443 2444---------------------------------------- 244517 November 2016. Summary of changes for version 20161117: 2446 2447 24481) ACPICA kernel-resident subsystem: 2449 2450Table Manager: Fixed a regression introduced in 20160729, "FADT support 2451cleanup". This was an attempt to remove all references in the source to 2452the FADT version 2, which never was a legal version number. It was 2453skipped because it was an early version of 64-bit support that was 2454eventually abandoned for the current 64-bit support. 2455 2456Interpreter: Fixed a problem where runtime implicit conversion was 2457incorrectly disabled for the ASL operators below. This brings the 2458behavior into compliance with the ACPI specification: 2459 FromBCD 2460 ToBCD 2461 ToDecimalString 2462 ToHexString 2463 ToInteger 2464 ToBuffer 2465 2466Table Manager: Added a new public interface, AcpiPutTable, used to 2467release and free an ACPI table returned by AcpiGetTable and related 2468interfaces. Lv Zheng. 2469 2470Example Code and Data Size: These are the sizes for the OS-independent 2471acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2472debug version of the code includes the debug output trace mechanism and 2473has a much larger code and data size. 2474 2475 Current Release: 2476 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total 2477 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total 2478 Previous Release: 2479 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total 2480 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total 2481 2482 24832) iASL Compiler/Disassembler and Tools: 2484 2485Disassembler: Fixed a regression for disassembly of Resource Template. 2486Detection of templates in the AML stream missed some types of templates. 2487 2488iASL: Fixed a problem where an Access Size error was returned for the PCC 2489address space when the AccessSize of the GAS register is greater than a 2490DWORD. Hoan Tran. 2491 2492iASL: Implemented several grammar changes for the operators below. These 2493changes are slated for the next version of the ACPI specification: 2494 RefOf - Disallow method invocation as an operand 2495 CondRefOf - Disallow method invocation as an operand 2496 DerefOf - Disallow operands that use the result from operators 2497that 2498 do not return a reference (Changed TermArg to 2499SuperName). 2500 2501iASL: Control method invocations are now allowed for Target operands, as 2502per the ACPI specification. Removed error for using a control method 2503invocation as a Target operand. 2504 2505Disassembler: Improved detection of Resource Templates, Unicode, and 2506Strings within Buffer objects. These subtypes do not contain a specific 2507opcode to indicate the originating ASL code, and they must be detected by 2508other means within the disassembler. 2509 2510iASL: Implemented an optimization improvement for 32-bit ACPI tables 2511(DSDT/SSDT). For the 32-bit case only, compute the optimum integer opcode 2512only after 64-bit to 32-bit truncation. A truncation warning message is 2513still emitted, however. 2514 2515AcpiXtract: Implemented handling for both types of line terminators (LF 2516or CR/LF) so that it can accept AcpiDump output files from any system. 2517Peter Wu. 2518 2519AcpiBin: Added two new options for comparing AML files: 2520 -a: compare and display ALL mismatches 2521 -o: start compare at this offset into the second file 2522 2523---------------------------------------- 252430 September 2016. Summary of changes for version 20160930: 2525 2526 25271) ACPICA kernel-resident subsystem: 2528 2529Fixed a regression in the internal AcpiTbFindTable function where a non 2530AE_OK exception could inadvertently be returned even if the function did 2531not fail. This problem affects the following operators: 2532 DataTableRegion 2533 LoadTable 2534 2535Fixed a regression in the LoadTable operator where a load to any 2536namespace location other than the root no longer worked properly. 2537 2538Increased the maximum loop count value that will result in the 2539AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to 2540prevent infinite loops within the AML interpreter and thus the host OS 2541kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to 25421,048,575). 2543 2544Moved the AcpiGbl_MaxLoopIterations configuration variable to the public 2545acpixf.h file. This allows hosts to easily configure the maximum loop 2546count at runtime. 2547 2548Removed an illegal character in the strtoul64.c file. This character 2549caused errors with some C compilers. 2550 2551Example Code and Data Size: These are the sizes for the OS-independent 2552acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2553debug version of the code includes the debug output trace mechanism and 2554has a much larger code and data size. 2555 2556 Current Release: 2557 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total 2558 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total 2559 Previous Release: 2560 Non-Debug Version: 140.0K Code, 58.1K Data, 198.1K Total 2561 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total 2562 2563 25642) iASL Compiler/Disassembler and Tools: 2565 2566Disassembler: Fixed a problem with the conversion of Else{If{ blocks into 2567the simpler ASL ElseIf keyword. During the conversion, a trailing If 2568block could be lost and missing from the disassembled output. 2569 2570iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+, 2571the missing rule caused a parse error when using the Index operator as an 2572operand to ObjectType. This construct now compiles properly. Example: 2573 ObjectType(PKG1[4]). 2574 2575iASL: Correctly handle unresolved symbols in the hardware map file (-lm 2576option). Previously, unresolved symbols could cause a protection fault. 2577Such symbols are now marked as unresolved in the map file. 2578 2579iASL: Implemented support to allow control method invocations as an 2580operand to the ASL DeRefOf operator. Example: 2581 DeRefOf(MTH1(Local0)) 2582 2583Disassembler: Improved support for the ToPLD ASL macro. Detection of a 2584possible _PLD buffer now includes examination of both the normal buffer 2585length (16 or 20) as well as the surrounding AML package length. 2586 2587Disassembler: Fixed a problem with the decoding of complex expressions 2588within the Divide operator for ASL+. For the case where both the quotient 2589and remainder targets are specified, the entire statement cannot be 2590disassembled. Previously, the output incorrectly contained a mix of ASL- 2591and ASL+ operators. This mixed statement causes a syntax error when 2592compiled. Example: 2593 Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly 2594disassembled to: 2595 Divide (INT1 + 6, 128, RSLT, QUOT) 2596 2597iASL/Tools: Added support to process AML and non-AML ACPI tables 2598consistently. For the disassembler and AcpiExec, allow all types of ACPI 2599tables (AML and data tables). For the iASL -e option, allow only AML 2600tables (DSDT/SSDT). 2601 2602---------------------------------------- 260331 August 2016. Summary of changes for version 20160831: 2604 2605 26061) ACPICA kernel-resident subsystem: 2607 2608Improve support for the so-called "module-level code", which is defined 2609to be math, logical and control AML opcodes that appear outside of any 2610control method. This change improves the support by adding more opcodes 2611that can be executed in the manner. Some other issues have been solved, 2612and the ASL grammar changes to support such code under all scope 2613operators (Device, etc.) are complete. Lv Zheng. 2614 2615UEFI support: these OSL functions have been implemented. This is an 2616additional step toward supporting the AcpiExec utility natively (with 2617full hardware access) under UEFI. Marcelo Ferreira. 2618 AcpiOsReadPciConfiguration 2619 AcpiOsWritePciConfiguration 2620 2621Fixed a possible mutex error during control method auto-serialization. Lv 2622Zheng. 2623 2624Updated support for the Generic Address Structure by fully implementing 2625all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv 2626Zheng. 2627 2628Updated the return value for the internal _OSI method. Instead of 26290xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF 2630for 64-bit ACPI tables. This fixes an incompatibility with other ACPI 2631implementations, and will be reflected and clarified in the next version 2632of the ACPI specification. 2633 2634Implemented two new table events that can be passed to an ACPICA table 2635handler. These events are used to indicate a table installation or 2636uninstallation. These events are used in addition to existed table load 2637and unload events. Lv Zheng. 2638 2639Implemented a cleanup for all internal string-to-integer conversions. 2640Consolidate multiple versions of this functionality and limit possible 2641bases to either 10 or 16 to simplify the code. Adds a new file, 2642utstrtoul64. 2643 2644Cleanup the inclusion order of the various compiler-specific headers. 2645This simplifies build configuration management. The compiler-specific 2646headers are now split out from the host-specific headers. Lv Zheng. 2647 2648Example Code and Data Size: These are the sizes for the OS-independent 2649acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2650debug version of the code includes the debug output trace mechanism and 2651has a much larger code and data size. 2652 2653 Current Release: 2654 Non-Debug Version: 140.1K Code, 58.1K Data, 198.1K Total 2655 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total 2656 2657 26582) iASL Compiler/Disassembler and Tools: 2659 2660iASL/AcpiExec: Added a command line option to display the build date/time 2661of the tool (-vd). This can be useful to verify that the correct version 2662of the tools are being used. 2663 2664AML Debugger: Implemented a new subcommand ("execute predef") to execute 2665all predefined control methods and names within the current namespace. 2666This can be useful for debugging problems with ACPI tables and the ACPI 2667namespace. 2668 2669---------------------------------------- 267029 July 2016. Summary of changes for version 20160729: 2671 2672 26731) ACPICA kernel-resident subsystem: 2674 2675Implemented basic UEFI support for the various ACPICA tools. This 2676includes: 26771) An OSL to implement the various AcpiOs* interfaces on UEFI. 26782) Support to obtain the ACPI tables on UEFI. 26793) Local implementation of required C library functions not available on 2680UEFI. 26814) A front-end (main) function for the tools for UEFI-related 2682initialization. 2683 2684The initial deployment of this support is the AcpiDump utility executing 2685as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit"). 2686Current environments supported are Linux/Unix. MSVC generation is not 2687supported at this time. See the generate/efi/README file for build 2688instructions. Lv Zheng. 2689 2690Future plans include porting the AcpiExec utility to execute natively on 2691the platform with I/O and memory access. This will allow viewing/dump of 2692the platform namespace and native execution of ACPI control methods that 2693access the actual hardware. To fully implement this support, the OSL 2694functions below must be implemented with UEFI interfaces. Any community 2695help in the implementation of these functions would be appreciated: 2696 AcpiOsReadPort 2697 AcpiOsWritePort 2698 AcpiOsReadMemory 2699 AcpiOsWriteMemory 2700 AcpiOsReadPciConfiguration 2701 AcpiOsWritePciConfiguration 2702 2703Restructured and standardized the C library configuration for ACPICA, 2704resulting in the various configuration options below. This includes a 2705global restructuring of the compiler-dependent and platform-dependent 2706include files. These changes may affect the existing platform-dependent 2707configuration files on some hosts. Lv Zheng. 2708 2709The current C library configuration options appear below. For any issues, 2710it may be helpful to examine the existing compiler-dependent and 2711platform-dependent files as examples. Lv Zheng. 2712 27131) Linux kernel: 2714 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C 2715library. 2716 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library. 27172) Unix/Windows/BSD applications: 2718 ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C 2719library. 2720 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library. 27213) UEFI applications: 2722 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C 2723library. 2724 ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library. 27254) UEFI applications (EDK2/StdLib): 2726 ACPI_USE_STANDARD_HEADERS=y in order to use EDK2 StdLib C library. 2727 ACPI_USE_SYSTEM_CLIBRARY=y in order to use EDK2 StdLib C library. 2728 2729 2730AML interpreter: "module-level code" support. Allows for execution of so- 2731called "executable" AML code (math/logical operations, etc.) outside of 2732control methods not just at the module level (top level) but also within 2733any scope declared outside of a control method - Scope{}, Device{}, 2734Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng. 2735 2736Simplified the configuration of the "maximum AML loops" global option by 2737adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be 2738modified at runtime. 2739 2740 2741Example Code and Data Size: These are the sizes for the OS-independent 2742acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2743debug version of the code includes the debug output trace mechanism and 2744has a much larger code and data size. 2745 2746 Current Release: 2747 Non-Debug Version: 139.1K Code, 22.9K Data, 162.0K Total 2748 Debug Version: 199.0K Code, 81.8K Data, 280.8K Total 2749 2750 27512) iASL Compiler/Disassembler and Tools: 2752 2753iASL: Add full support for the RASF ACPI table (RAS Features Table). 2754Includes disassembler, data table compiler, and header support. 2755 2756iASL Expand "module-level code" support. Allows for 2757compilation/disassembly of so-called "executable" AML code (math/logical 2758operations, etc.) outside of control methods not just at the module level 2759(top level) but also within any scope declared outside of a control 2760method - Scope{}, Device{}, Processor{}, PowerResource{}, and 2761ThermalZone{}. 2762 2763AcpiDump: Added support for dumping all SSDTs on newer versions of 2764Windows. These tables are now easily available -- SSDTs are not available 2765through the registry on older versions. 2766 2767---------------------------------------- 276827 May 2016. Summary of changes for version 20160527: 2769 2770 27711) ACPICA kernel-resident subsystem: 2772 2773Temporarily reverted the new arbitrary bit length/alignment support in 2774AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been 2775a number of regressions with the new code that need to be fully resolved 2776and tested before this support can be finally integrated into ACPICA. 2777Apologies for any inconveniences these issues may have caused. 2778 2779The ACPI message macros are not configurable (ACPI_MSG_ERROR, 2780ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR, 2781and ACPI_MSG_BIOS_WARNING). Lv Zheng. 2782 2783Fixed a couple of GCC warnings associated with the use of the -Wcast-qual 2784option. Adds a new return macro, return_STR. Junk-uk Kim. 2785 2786Example Code and Data Size: These are the sizes for the OS-independent 2787acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2788debug version of the code includes the debug output trace mechanism and 2789has a much larger code and data size. 2790 2791 Current Release: 2792 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total 2793 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 2794 Previous Release: 2795 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 2796 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total 2797 2798---------------------------------------- 279922 April 2016. Summary of changes for version 20160422: 2800 28011) ACPICA kernel-resident subsystem: 2802 2803Fixed a regression in the GAS (generic address structure) arbitrary bit 2804support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior 2805and incorrect return values. Lv Zheng. ACPICA BZ 1270. 2806 2807ACPI 6.0: Added support for new/renamed resource macros. One new argument 2808was added to each of these macros, and the original name has been 2809deprecated. The AML disassembler will always disassemble to the new 2810names. Support for the new macros was added to iASL, disassembler, 2811resource manager, and the acpihelp utility. ACPICA BZ 1274. 2812 2813 I2cSerialBus -> I2cSerialBusV2 2814 SpiSerialBus -> SpiSerialBusV2 2815 UartSerialBus -> UartSerialBusV2 2816 2817ACPI 6.0: Added support for a new integer field that was appended to the 2818package object returned by the _BIX method. This adds iASL compile-time 2819and AML runtime error checking. ACPICA BZ 1273. 2820 2821ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm 2822Subspace Type2" (Headers, Disassembler, and data table compiler). 2823 2824Example Code and Data Size: These are the sizes for the OS-independent 2825acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2826debug version of the code includes the debug output trace mechanism and 2827has a much larger code and data size. 2828 2829 Current Release: 2830 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 2831 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 2832 Previous Release: 2833 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total 2834 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total 2835 2836 28372) iASL Compiler/Disassembler and Tools: 2838 2839iASL: Implemented an ASL grammar extension to allow/enable executable 2840"module-level code" to be created and executed under the various 2841operators that create new scopes. This type of AML code is already 2842supported in all known AML interpreters, and the grammar change will 2843appear in the next version of the ACPI specification. Simplifies the 2844conditional runtime creation of named objects under these object types: 2845 2846 Device 2847 PowerResource 2848 Processor 2849 Scope 2850 ThermalZone 2851 2852iASL: Implemented a new ASL extension, a "For" loop macro to add greater 2853ease-of-use to the ASL language. The syntax is similar to the 2854corresponding C operator, and is implemented with the existing AML While 2855opcode -- thus requiring no changes to existing AML interpreters. 2856 2857 For (Initialize, Predicate, Update) {TermList} 2858 2859Grammar: 2860 ForTerm := 2861 For ( 2862 Initializer // Nothing | TermArg => ComputationalData 2863 Predicate // Nothing | TermArg => ComputationalData 2864 Update // Nothing | TermArg => ComputationalData 2865 ) {TermList} 2866 2867 2868iASL: The _HID/_ADR detection and validation has been enhanced to search 2869under conditionals in order to allow these objects to be conditionally 2870created at runtime. 2871 2872iASL: Fixed several issues with the constant folding feature. The 2873improvement allows better detection and resolution of statements that can 2874be folded at compile time. ACPICA BZ 1266. 2875 2876iASL/Disassembler: Fixed a couple issues with the Else{If{}...} 2877conversion to the ASL ElseIf operator where incorrect ASL code could be 2878generated. 2879 2880iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where 2881sometimes an extra (and extraneous) set of parentheses were emitted for 2882some combinations of operators. Although this did not cause any problems 2883with recompilation of the disassembled code, it made the code more 2884difficult to read. David Box. ACPICA BZ 1231. 2885 2886iASL: Changed to ignore the unreferenced detection for predefined names 2887of resource descriptor elements, when the resource descriptor is 2888created/defined within a control method. 2889 2890iASL: Disassembler: Fix a possible fault with externally declared Buffer 2891objects. 2892 2893---------------------------------------- 289418 March 2016. Summary of changes for version 20160318: 2895 28961) ACPICA kernel-resident subsystem: 2897 2898Added support for arbitrary bit lengths and bit offsets for registers 2899defined by the Generic Address Structure. Previously, only aligned bit 2900lengths of 8/16/32/64 were supported. This was sufficient for many years, 2901but recently some machines have been seen that require arbitrary bit- 2902level support. ACPICA BZ 1240. Lv Zheng. 2903 2904Fixed an issue where the \_SB._INI method sometimes must be evaluated 2905before any _REG methods are evaluated. Lv Zheng. 2906 2907Implemented several changes related to ACPI table support 2908(Headers/Disassembler/TableCompiler): 2909NFIT: For ACPI 6.1, updated to add some additional new fields and 2910constants. 2911FADT: Updated a warning message and set compliance to ACPI 6.1 (Version 29126). 2913DMAR: Added new constants per the 10/2014 DMAR spec. 2914IORT: Added new subtable per the 10/2015 IORT spec. 2915HEST: For ACPI 6.1, added new constants and new subtable. 2916DBG2: Added new constants per the 12/2015 DBG2 spec. 2917FPDT: Fixed several incorrect fields, add the FPDT boot record structure. 2918ACPICA BZ 1249. 2919ERST/EINJ: Updated disassembler with new "Execute Timings" actions. 2920 2921Updated header support for the DMAR table to match the current version of 2922the related spec. 2923 2924Added extensions to the ASL Concatenate operator to allow any ACPI object 2925to be passed as an operand. Any object other than Integer/String/Buffer 2926simply returns a string containing the object type. This extends the 2927usefulness of the Printf macros. Previously, Concatenate would abort the 2928control method if a non-data object was encountered. 2929 2930ACPICA source code: Deployed the C "const" keyword across the source code 2931where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD). 2932 2933Example Code and Data Size: These are the sizes for the OS-independent 2934acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2935debug version of the code includes the debug output trace mechanism and 2936has a much larger code and data size. 2937 2938 Current Release: 2939 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total 2940 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total 2941 Previous Release: 2942 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total 2943 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total 2944 2945 29462) iASL Compiler/Disassembler and Tools: 2947 2948iASL/Disassembler: Improved the heuristic used to determine the number of 2949arguments for an externally defined control method (a method in another 2950table). Although this is an improvement, there is no deterministic way to 2951"guess" the number of method arguments. Only the ACPI 6.0 External opcode 2952will completely solve this problem as it is deployed (automatically) in 2953newer BIOS code. 2954 2955iASL/Disassembler: Fixed an ordering issue for emitted External() ASL 2956statements that could cause errors when the disassembled file is 2957compiled. ACPICA BZ 1243. David Box. 2958 2959iASL: Fixed a regression caused by the merger of the two versions of the 2960local strtoul64. Because of a dependency on a global variable, strtoul64 2961could return an error for integers greater than a 32-bit value. ACPICA BZ 29621260. 2963 2964iASL: Fixed a regression where a fault could occur for an ASL Return 2965statement if it invokes a control method that is not resolved. ACPICA BZ 29661264. 2967 2968AcpiXtract: Improved input file validation: detection of binary files and 2969non-acpidump text files. 2970 2971---------------------------------------- 297212 February 2016. Summary of changes for version 20160212: 2973 29741) ACPICA kernel-resident subsystem: 2975 2976Implemented full support for the ACPI 6.1 specification (released in 2977January). This version of the specification is available at: 2978http://www.uefi.org/specifications 2979 2980Only a relatively small number of changes were required in ACPICA to 2981support ACPI 6.1, in these areas: 2982- New predefined names 2983- New _HID values 2984- A new subtable for HEST 2985- A few other header changes for new values 2986 2987Ensure \_SB_._INI is executed before any _REG methods are executed. There 2988appears to be existing BIOS code that relies on this behavior. Lv Zheng. 2989 2990Reverted a change made in version 20151218 which enabled method 2991invocations to be targets of various ASL operators (SuperName and Target 2992grammar elements). While the new behavior is supported by the ACPI 2993specification, other AML interpreters do not support this behavior and 2994never will. The ACPI specification will be updated for ACPI 6.2 to remove 2995this support. Therefore, the change was reverted to the original ACPICA 2996behavior. 2997 2998ACPICA now supports the GCC 6 compiler. 2999 3000Current Release: (Note: build changes increased sizes) 3001 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total 3002 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total 3003Previous Release: 3004 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total 3005 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total 3006 3007 30082) iASL Compiler/Disassembler and Tools: 3009 3010Completed full support for the ACPI 6.0 External() AML opcode. The 3011compiler emits an external AML opcode for each ASL External statement. 3012This opcode is used by the disassembler to assist with the disassembly of 3013external control methods by specifying the required number of arguments 3014for the method. AML interpreters do not use this opcode. To ensure that 3015interpreters do not even see the opcode, a block of one or more external 3016opcodes is surrounded by an "If(0)" construct. As this feature becomes 3017commonly deployed in BIOS code, the ability of disassemblers to correctly 3018disassemble AML code will be greatly improved. David Box. 3019 3020iASL: Implemented support for an optional cross-reference output file. 3021The -lx option will create a the cross-reference file with the suffix 3022"xrf". Three different types of cross-reference are created in this file: 3023- List of object references made from within each control method 3024- Invocation (caller) list for each user-defined control method 3025- List of references to each non-method object in the namespace 3026 3027iASL: Method invocations as ASL Target operands are now disallowed and 3028flagged as errors in preparation for ACPI 6.2 (see the description of the 3029problem above). 3030 3031---------------------------------------- 30328 January 2016. Summary of changes for version 20160108: 3033 30341) ACPICA kernel-resident subsystem: 3035 3036Updated all ACPICA copyrights and signons to 2016: Added the 2016 3037copyright to all source code module headers and utility/tool signons. 3038This includes the standard Linux dual-license header. This affects 3039virtually every file in the ACPICA core subsystem, iASL compiler, all 3040ACPICA utilities, and the ACPICA test suite. 3041 3042Fixed a regression introduced in version 20151218 concerning the 3043execution of so-called module-level ASL/AML code. Namespace objects 3044created under a module-level If() construct were not properly/fully 3045entered into the namespace and could cause an interpreter fault when 3046accessed. 3047 3048Example Code and Data Size: These are the sizes for the OS-independent 3049acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3050debug version of the code includes the debug output trace mechanism and 3051has a much larger code and data size. 3052 3053Current Release: 3054 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total 3055 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total 3056 Previous Release: 3057 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total 3058 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total 3059 3060 30612) iASL Compiler/Disassembler and Tools: 3062 3063Fixed a problem with the compilation of the GpioIo and GpioInt resource 3064descriptors. The _PIN field name was incorrectly defined to be an array 3065of 32-bit values, but the _PIN values are in fact 16 bits each. This 3066would cause incorrect bit width warnings when using Word (16-bit) fields 3067to access the descriptors. 3068 3069 3070---------------------------------------- 307118 December 2015. Summary of changes for version 20151218: 3072 30731) ACPICA kernel-resident subsystem: 3074 3075Implemented per-AML-table execution of "module-level code" as individual 3076ACPI tables are loaded into the namespace during ACPICA initialization. 3077In other words, any module-level code within an AML table is executed 3078immediately after the table is loaded, instead of batched and executed 3079after all of the tables have been loaded. This provides compatibility 3080with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng, 3081David Box. 3082 3083To fully support the feature above, the default operation region handlers 3084for the SystemMemory, SystemIO, and PCI_Config address spaces are now 3085installed before any ACPI tables are loaded. This enables module-level 3086code to access these address spaces during the table load and module- 3087level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David 3088Box. 3089 3090Implemented several changes to the internal _REG support in conjunction 3091with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples 3092utilities for the changes above. Although these tools were changed, host 3093operating systems that simply use the default handlers for SystemMemory, 3094SystemIO, and PCI_Config spaces should not require any update. Lv Zheng. 3095 3096For example, in the code below, DEV1 is conditionally added to the 3097namespace by the DSDT via module-level code that accesses an operation 3098region. The SSDT references DEV1 via the Scope operator. DEV1 must be 3099created immediately after the DSDT is loaded in order for the SSDT to 3100successfully reference DEV1. Previously, this code would cause an 3101AE_NOT_EXIST exception during the load of the SSDT. Now, this code is 3102fully supported by ACPICA. 3103 3104 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1) 3105 { 3106 OperationRegion (OPR1, SystemMemory, 0x400, 32) 3107 Field (OPR1, AnyAcc, NoLock, Preserve) 3108 { 3109 FLD1, 1 3110 } 3111 If (FLD1) 3112 { 3113 Device (\DEV1) 3114 { 3115 } 3116 } 3117 } 3118 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1) 3119 { 3120 External (\DEV1, DeviceObj) 3121 Scope (\DEV1) 3122 { 3123 } 3124 } 3125 3126Fixed an AML interpreter problem where control method invocations were 3127not handled correctly when the invocation was itself a SuperName argument 3128to another ASL operator. In these cases, the method was not invoked. 3129ACPICA BZ 1002. Affects the following ASL operators that have a SuperName 3130argument: 3131 Store 3132 Acquire, Wait 3133 CondRefOf, RefOf 3134 Decrement, Increment 3135 Load, Unload 3136 Notify 3137 Signal, Release, Reset 3138 SizeOf 3139 3140Implemented automatic String-to-ObjectReference conversion support for 3141packages returned by predefined names (such as _DEP). A common BIOS error 3142is to add double quotes around an ObjectReference namepath, which turns 3143the reference into an unexpected string object. This support detects the 3144problem and corrects it before the package is returned to the caller that 3145invoked the method. Lv Zheng. 3146 3147Implemented extensions to the Concatenate operator. Concatenate now 3148accepts any type of object, it is not restricted to simply 3149Integer/String/Buffer. For objects other than these 3 basic data types, 3150the argument is treated as a string containing the name of the object 3151type. This expands the utility of Concatenate and the Printf/Fprintf 3152macros. ACPICA BZ 1222. 3153 3154Cleaned up the output of the ASL Debug object. The timer() value is now 3155optional and no longer emitted by default. Also, the basic data types of 3156Integer/String/Buffer are simply emitted as their values, without a data 3157type string -- since the data type is obvious from the output. ACPICA BZ 31581221. 3159 3160Example Code and Data Size: These are the sizes for the OS-independent 3161acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3162debug version of the code includes the debug output trace mechanism and 3163has a much larger code and data size. 3164 3165 Current Release: 3166 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total 3167 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total 3168 Previous Release: 3169 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 3170 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 3171 3172 31732) iASL Compiler/Disassembler and Tools: 3174 3175iASL: Fixed some issues with the ASL Include() operator. This operator 3176was incorrectly defined in the iASL parser rules, causing a new scope to 3177be opened for the code within the include file. This could lead to 3178several issues, including allowing ASL code that is technically illegal 3179and not supported by AML interpreters. Note, this does not affect the 3180related #include preprocessor operator. ACPICA BZ 1212. 3181 3182iASL/Disassembler: Implemented support for the ASL ElseIf operator. This 3183operator is essentially an ASL macro since there is no AML opcode 3184associated with it. The code emitted by the iASL compiler for ElseIf is 3185an Else opcode followed immediately by an If opcode. The disassembler 3186will now emit an ElseIf if it finds an Else immediately followed by an 3187If. This simplifies the decoded ASL, especially for deeply nested 3188If..Else and large Switch constructs. Thus, the disassembled code more 3189closely follows the original source ASL. ACPICA BZ 1211. Example: 3190 3191 Old disassembly: 3192 Else 3193 { 3194 If (Arg0 == 0x02) 3195 { 3196 Local0 = 0x05 3197 } 3198 } 3199 3200 New disassembly: 3201 ElseIf (Arg0 == 0x02) 3202 { 3203 Local0 = 0x05 3204 } 3205 3206AcpiExec: Added support for the new module level code behavior and the 3207early region installation. This required a small change to the 3208initialization, since AcpiExec must install its own operation region 3209handlers. 3210 3211AcpiExec: Added support to make the debug object timer optional. Default 3212is timer disabled. This cleans up the debug object output -- the timer 3213data is rarely used. 3214 3215AcpiExec: Multiple ACPI tables are now loaded in the order that they 3216appear on the command line. This can be important when there are 3217interdependencies/references between the tables. 3218 3219iASL/Templates. Add support to generate template files with multiple 3220SSDTs within a single output file. Also added ommand line support to 3221specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ 32221223, 1225. 3223 3224 3225---------------------------------------- 322624 November 2015. Summary of changes for version 20151124: 3227 32281) ACPICA kernel-resident subsystem: 3229 3230Fixed a possible regression for a previous update to FADT handling. The 3231FADT no longer has a fixed table ID, causing some issues with code that 3232was hardwired to a specific ID. Lv Zheng. 3233 3234Fixed a problem where the method auto-serialization could interfere with 3235the current SyncLevel. This change makes the auto-serialization support 3236transparent to the SyncLevel support and management. 3237 3238Removed support for the _SUB predefined name in AcpiGetObjectInfo. This 3239interface is intended for early access to the namespace during the 3240initial namespace device discovery walk. The _SUB method has been seen to 3241access operation regions in some cases, causing errors because the 3242operation regions are not fully initialized. 3243 3244AML Debugger: Fixed some issues with the terminate/quit/exit commands 3245that can cause faults. Lv Zheng. 3246 3247AML Debugger: Add thread ID support so that single-step mode only applies 3248to the AML Debugger thread. This prevents runtime errors within some 3249kernels. Lv Zheng. 3250 3251Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx 3252methods that are invoked by this interface are optional, removed warnings 3253emitted for the case where one or more of these methods do not exist. 3254ACPICA BZ 1208, original change by Prarit Bhargava. 3255 3256Made a major pass through the entire ACPICA source code base to 3257standardize formatting that has diverged a bit over time. There are no 3258functional changes, but this will of course cause quite a few code 3259differences from the previous ACPICA release. 3260 3261Example Code and Data Size: These are the sizes for the OS-independent 3262acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3263debug version of the code includes the debug output trace mechanism and 3264has a much larger code and data size. 3265 3266 Current Release: 3267 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 3268 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 3269 Previous Release: 3270 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 3271 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 3272 3273 32742) iASL Compiler/Disassembler and Tools: 3275 3276iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple 3277definition blocks within a single ASL file and the resulting AML file. 3278Support for this type of file was also added to the various tools that 3279use binary AML files: acpiexec, acpixtract, and the AML disassembler. The 3280example code below shows two definition blocks within the same file: 3281 3282 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template", 32830x12345678) 3284 { 3285 } 3286 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01) 3287 { 3288 } 3289 3290iASL: Enhanced typechecking for the Name() operator. All expressions for 3291the value of the named object must be reduced/folded to a single constant 3292at compile time, as per the ACPI specification (the AML definition of 3293Name()). 3294 3295iASL: Fixed some code indentation issues for the -ic and -ia options (C 3296and assembly headers). Now all emitted code correctly begins in column 1. 3297 3298iASL: Added an error message for an attempt to open a Scope() on an 3299object defined in an SSDT. The DSDT is always loaded into the namespace 3300first, so any attempt to open a Scope on an SSDT object will fail at 3301runtime. 3302 3303 3304---------------------------------------- 330530 September 2015. Summary of changes for version 20150930: 3306 33071) ACPICA kernel-resident subsystem: 3308 3309Debugger: Implemented several changes and bug fixes to assist support for 3310the in-kernel version of the AML debugger. Lv Zheng. 3311- Fix the "predefined" command for in-kernel debugger. 3312- Do not enter debug command loop for the help and version commands. 3313- Disallow "execute" command during execution/single-step of a method. 3314 3315Interpreter: Updated runtime typechecking for all operators that have 3316target operands. The operand is resolved and validated that it is legal. 3317For example, the target cannot be a non-data object such as a Device, 3318Mutex, ThermalZone, etc., as per the ACPI specification. 3319 3320Debugger: Fixed the double-mutex user I/O handshake to work when local 3321deadlock detection is enabled. 3322 3323Debugger: limited display of method locals and arguments (LocalX and 3324ArgX) to only those that have actually been initialized. This prevents 3325lines of extraneous output. 3326 3327Updated the definition of the NFIT table to correct the bit polarity of 3328one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED 3329 3330Example Code and Data Size: These are the sizes for the OS-independent 3331acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3332debug version of the code includes the debug output trace mechanism and 3333has a much larger code and data size. 3334 3335 Current Release: 3336 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 3337 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 3338 Previous Release: 3339 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 3340 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 3341 3342 33432) iASL Compiler/Disassembler and Tools: 3344 3345iASL: Improved the compile-time typechecking for operands of many of the 3346ASL operators: 3347 3348-- Added an option to disable compiler operand/operator typechecking (- 3349ot). 3350 3351-- For the following operators, the TermArg operands are now validated 3352when possible to be Integer data objects: BankField, OperationRegion, 3353DataTableRegion, Buffer, and Package. 3354 3355-- Store (Source, Target): Both the source and target operands are 3356resolved and checked that the operands are both legal. For example, 3357neither operand can be a non-data object such as a Device, Mutex, 3358ThermalZone, etc. Note, as per the ACPI specification, the CopyObject 3359operator can be used to store an object to any type of target object. 3360 3361-- Store (Source, Target): If the source is a Package object, the target 3362must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target 3363is a Package, the source must also be a Package. 3364 3365-- Store (Source, Target): A warning is issued if the source and target 3366resolve to the identical named object. 3367 3368-- Store (Source, <method invocation>): An error is generated for the 3369target method invocation, as this construct is not supported by the AML 3370interpreter. 3371 3372-- For all ASL math and logic operators, the target operand must be a 3373data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This 3374includes the function return value also. 3375 3376-- External declarations are also included in the typechecking where 3377possible. External objects defined using the UnknownObj keyword cannot be 3378typechecked, however. 3379 3380iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index 3381operator: 3382- Legacy code: Index(PKG1, 3) 3383- New ASL+ code: PKG1[3] 3384This completes the ACPI 6.0 ASL+ support as it was the only operator not 3385supported. 3386 3387iASL: Fixed the file suffix for the preprocessor output file (.i). Two 3388spaces were inadvertently appended to the filename, causing file access 3389and deletion problems on some systems. 3390 3391ASL Test Suite (ASLTS): Updated the master makefile to generate all 3392possible compiler output files when building the test suite -- thus 3393exercising these features of the compiler. These files are automatically 3394deleted when the test suite exits. 3395 3396 3397---------------------------------------- 339818 August 2015. Summary of changes for version 20150818: 3399 34001) ACPICA kernel-resident subsystem: 3401 3402Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv 3403Zheng. ACPICA BZ 1186. 3404 3405Completed development to ensure that the ACPICA Disassembler and Debugger 3406are fully standalone components of ACPICA. Removed cross-component 3407dependences. Lv Zheng. 3408 3409The max-number-of-AML-loops is now runtime configurable (previously was 3410compile-time only). This is essentially a loop timeout to force-abort 3411infinite AML loops. ACPCIA BZ 1192. 3412 3413Debugger: Cleanup output to dump ACPI names and namepaths without any 3414trailing underscores. Lv Zheng. ACPICA BZ 1135. 3415 3416Removed unnecessary conditional compilations across the Debugger and 3417Disassembler components where entire modules could be left uncompiled. 3418 3419The aapits test is deprecated and has been removed from the ACPICA git 3420tree. The test has never been completed and has not been maintained, thus 3421becoming rather useless. ACPICA BZ 1015, 794. 3422 3423A batch of small changes to close bugzilla and other reports: 3424- Remove duplicate code for _PLD processing. ACPICA BZ 1176. 3425- Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185. 3426- iASL: Support POSIX yacc again in makefile. Jung-uk Kim. 3427- ACPI table support: general cleanup and simplification. Lv Zheng, Bob 3428Moore. 3429- ACPI table support: fix for a buffer read overrun in AcpiTbFindTable. 3430ACPICA BZ 1184. 3431- Enhance parameter validation for DataTableRegion and LoadTable ASL/AML 3432operators. 3433- Debugger: Split debugger initialization/termination interfaces. Lv 3434Zheng. 3435- AcpiExec: Emit OemTableId for SSDTs during the load phase for table 3436identification. 3437- AcpiExec: Add debug message during _REG method phase during table 3438load/init. 3439- AcpiNames: Fix a regression where some output was missing and no longer 3440emitted. 3441- Debugger: General cleanup and simplification. Lv Zheng. 3442- Disassembler: Cleanup use of several global option variables. Lv Zheng. 3443 3444Example Code and Data Size: These are the sizes for the OS-independent 3445acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3446debug version of the code includes the debug output trace mechanism and 3447has a much larger code and data size. 3448 3449 Current Release: 3450 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 3451 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 3452 Previous Release: 3453 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 3454 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 3455 3456 34572) iASL Compiler/Disassembler and Tools: 3458 3459AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT 3460were not handled properly and caused load errors. Now, properly invoke 3461and use the ACPICA auto-reallocate mechanism for ACPI table data 3462structures. ACPICA BZ 1188 3463 3464AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA 3465BZ 1190. 3466 3467AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For 3468AcpiExec, this means that no control methods (like _REG/_INI/_STA) are 3469executed during initialization. ACPICA BZ 1187, 1189. 3470 3471iASL/Disassembler: Implemented a prototype "listing" mode that emits AML 3472that corresponds to each disassembled ASL statement, to simplify 3473debugging. ACPICA BZ 1191. 3474 3475Debugger: Add option to the "objects" command to display a summary of the 3476current namespace objects (Object type and count). This is displayed if 3477the command is entered with no arguments. 3478 3479AcpiNames: Add -x option to specify debug level, similar to AcpiExec. 3480 3481 3482---------------------------------------- 348317 July 2015. Summary of changes for version 20150717: 3484 34851) ACPICA kernel-resident subsystem: 3486 3487Improved the partitioning between the Debugger and Disassembler 3488components. This allows the Debugger to be used standalone within kernel 3489code without the Disassembler (which is used for single stepping also). 3490This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng. 3491 3492Debugger: Implemented a new command to trace the execution of control 3493methods (Trace). This is especially useful for the in-kernel version of 3494the debugger when file I/O may not be available for method trace output. 3495See the ACPICA reference for more information. Lv Zheng. 3496 3497Moved all C library prototypes (used for the local versions of these 3498functions when requested) to a new header, acclib.h 3499Cleaned up the use of non-ANSI C library functions. These functions are 3500implemented locally in ACPICA. Moved all such functions to a common 3501source file, utnonansi.c 3502 3503Debugger: Fixed a problem with the "!!" command (get last command 3504executed) where the debugger could enter an infinite loop and eventually 3505crash. 3506 3507Removed the use of local macros that were used for some of the standard C 3508library functions to automatically cast input parameters. This mostly 3509affected the is* functions where the input parameter is defined to be an 3510int. This required a few modifications to the main ACPICA source code to 3511provide casting for these functions and eliminate possible compiler 3512warnings for these parameters. 3513 3514Across the source code, added additional status/error checking to resolve 3515issues discovered by static source code analysis tools such as Coverity. 3516 3517Example Code and Data Size: These are the sizes for the OS-independent 3518acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3519debug version of the code includes the debug output trace mechanism and 3520has a much larger code and data size. 3521 3522 Current Release: 3523 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 3524 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 3525 Previous Release: 3526 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 3527 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 3528 3529 35302) iASL Compiler/Disassembler and Tools: 3531 3532iASL: Fixed a regression where the device map file feature no longer 3533worked properly when used in conjunction with the disassembler. It only 3534worked properly with the compiler itself. 3535 3536iASL: Implemented a new warning for method LocalX variables that are set 3537but never used (similar to a C compiler such as gcc). This also applies 3538to ArgX variables that are not defined by the parent method, and are 3539instead (legally) used as local variables. 3540 3541iASL/Preprocessor: Finished the pass-through of line numbers from the 3542preprocessor to the compiler. This ensures that compiler errors/warnings 3543have the correct original line numbers and filenames, regardless of any 3544#include files. 3545 3546iASL/Preprocessor: Fixed a couple of issues with comment handling and the 3547pass-through of comments to the preprocessor output file (which becomes 3548the compiler input file). Also fixed a problem with // comments that 3549appear after a math expression. 3550 3551iASL: Added support for the TCPA server table to the table compiler and 3552template generator. (The client table was already previously supported) 3553 3554iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to 3555identify the iASL compiler. 3556 3557Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined 3558multiple times. The new names are ACPI_SIGN_NEGATIVE and 3559ACPI_SIGN_POSITIVE. 3560 3561AcpiHelp: Update to expand help messages for the iASL preprocessor 3562directives. 3563 3564 3565---------------------------------------- 356619 June 2015. Summary of changes for version 20150619: 3567 3568Two regressions in version 20150616 have been addressed: 3569 3570Fixes some problems/issues with the C library macro removal (ACPI_STRLEN, 3571etc.) This update changes ACPICA to only use the standard headers for 3572functions, or the prototypes for the local versions of the C library 3573functions. Across the source code, this required some additional casts 3574for some Clib invocations for portability. Moved all local prototypes to 3575a new file, acclib.h 3576 3577Fixes several problems with recent changes to the handling of the FACS 3578table that could cause some systems not to boot. 3579 3580 3581---------------------------------------- 358216 June 2015. Summary of changes for version 20150616: 3583 3584 35851) ACPICA kernel-resident subsystem: 3586 3587Across the entire ACPICA source code base, the various macros for the C 3588library functions (such as ACPI_STRLEN, etc.) have been removed and 3589replaced by the standard C library names (strlen, etc.) The original 3590purpose for these macros is no longer applicable. This simplification 3591reduces the number of macros used in the ACPICA source code 3592significantly, improving readability and maintainability. 3593 3594Implemented support for a new ACPI table, the OSDT. This table, the 3595"override" SDT, can be loaded directly by the host OS at boot time. It 3596enables the replacement of existing namespace objects that were installed 3597via the DSDT and/or SSDTs. The primary purpose for this is to replace 3598buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated 3599for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob 3600Moore. 3601 3602Added support for systems with (improperly) two FACS tables -- a "32-bit" 3603table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit 3604X field). This change will support both automatically. There continues to 3605be systems found with this issue. This support requires a change to the 3606AcpiSetFirmwareWakingVector interface. Also, a public global variable has 3607been added to allow the host to select which FACS is desired 3608(AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more 3609details Lv Zheng. 3610 3611Added a new feature to allow for systems that do not contain an FACS. 3612Although this is already supported on hardware-reduced platforms, the 3613feature has been extended for all platforms. The reasoning is that we do 3614not want to abort the entire ACPICA initialization just because the 3615system is seriously buggy and has no FACS. 3616 3617Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were 3618not correctly transcribed from the ACPI specification in ACPICA version 361920150515. 3620 3621Implemented support for the _CLS object in the AcpiGetObjectInfo external 3622interface. 3623 3624Updated the definitions of the TCPA and TPM2 ACPI tables to the more 3625recent TCG ACPI Specification, December 14, 2014. Table disassembler and 3626compiler also updated. Note: The TCPA "server" table is not supported by 3627the disassembler/table-compiler at this time. 3628 3629ACPI 6.0: Added definitions for the new GIC version field in the MADT. 3630 3631Example Code and Data Size: These are the sizes for the OS-independent 3632acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3633debug version of the code includes the debug output trace mechanism and 3634has a much larger code and data size. 3635 3636 Current Release: 3637 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 3638 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 3639 Previous Release: 3640 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 3641 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 3642 3643 36442) iASL Compiler/Disassembler and Tools: 3645 3646Disassembler: Fixed a problem with the new symbolic operator disassembler 3647where incorrect ASL code could be emitted in some cases for the "non- 3648commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and 3649ShiftRight. The actual problem cases seem to be rather unusual in common 3650ASL code, however. David Box. 3651 3652Modified the linux version of acpidump to obtain ACPI tables from not 3653just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv 3654Zheng. 3655 3656iASL: Fixed a problem where the user preprocessor output file (.i) 3657contained extra data that was not expected. The compiler was using this 3658file as a temporary file and passed through #line directives in order to 3659keep compiler error messages in sync with the input file and line number 3660across multiple include files. The (.i) is no longer a temporary file as 3661the compiler uses a new, different file for the original purpose. 3662 3663iASL: Fixed a problem where comments within the original ASL source code 3664file were not passed through to the preprocessor output file, nor any 3665listing files. 3666 3667iASL: Fixed some issues for the handling of the "#include" preprocessor 3668directive and the similar (but not the same) "Include" ASL operator. 3669 3670iASL: Add support for the new OSDT in both the disassembler and compiler. 3671 3672iASL: Fixed a problem with the constant folding support where a Buffer 3673object could be incorrectly generated (incorrectly formed) during a 3674conversion to a Store() operator. 3675 3676AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new 3677description text for the _REV predefined name. _REV now permanently 3678returns 2, as per the ACPI 6.0 specification. 3679 3680Debugger: Enhanced the output of the Debug ASL object for references 3681produced by the Index operator. For Buffers and strings, only output the 3682actual byte pointed to by the index. For packages, only print the single 3683package element decoded by the index. Previously, the entire 3684buffer/string/package was emitted. 3685 3686iASL/Table-compiler: Fixed a regression where the "generic" data types 3687were no longer recognized, causing errors. 3688 3689 3690---------------------------------------- 369115 May 2015. Summary of changes for version 20150515: 3692 3693This release implements most of ACPI 6.0 as described below. 3694 36951) ACPICA kernel-resident subsystem: 3696 3697Implemented runtime argument checking and return value checking for all 3698new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI, 3699_MTL, _PRR, _RDI, _RST, _TFP, _TSN. 3700 3701Example Code and Data Size: These are the sizes for the OS-independent 3702acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3703debug version of the code includes the debug output trace mechanism and 3704has a much larger code and data size. 3705 3706 Current Release: 3707 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 3708 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 3709 Previous Release: 3710 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 3711 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 3712 3713 37142) iASL Compiler/Disassembler and Tools: 3715 3716iASL compiler: Added compile-time support for all new ACPI 6.0 predefined 3717names (argument count validation and return value typechecking.) 3718 3719iASL disassembler and table compiler: implemented support for all new 3720ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV. 3721 3722iASL disassembler and table compiler: Added ACPI 6.0 changes to existing 3723tables: FADT, MADT. 3724 3725iASL preprocessor: Added a new directive to enable inclusion of binary 3726blobs into ASL code. The new directive is #includebuffer. It takes a 3727binary file as input and emits a named ascii buffer object into the ASL 3728code. 3729 3730AcpiHelp: Added support for all new ACPI 6.0 predefined names. 3731 3732AcpiHelp: Added a new option, -d, to display all iASL preprocessor 3733directives. 3734 3735AcpiHelp: Added a new option, -t, to display all known/supported ACPI 3736tables. 3737 3738 3739---------------------------------------- 374010 April 2015. Summary of changes for version 20150410: 3741 3742Reverted a change introduced in version 20150408 that caused 3743a regression in the disassembler where incorrect operator 3744symbols could be emitted. 3745 3746 3747---------------------------------------- 374808 April 2015. Summary of changes for version 20150408: 3749 3750 37511) ACPICA kernel-resident subsystem: 3752 3753Permanently set the return value for the _REV predefined name. It now 3754returns 2 (was 5). This matches other ACPI implementations. _REV will be 3755deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2 3756for ACPI 2.0 and later. It should never be used to differentiate or 3757identify operating systems. 3758 3759Added the "Windows 2015" string to the _OSI support. ACPICA will now 3760return TRUE to a query with this string. 3761 3762Fixed several issues with the local version of the printf function. 3763 3764Added the C99 compiler option (-std=c99) to the Unix makefiles. 3765 3766 Current Release: 3767 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total 3768 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total 3769 Previous Release: 3770 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 3771 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 3772 3773 37742) iASL Compiler/Disassembler and Tools: 3775 3776iASL: Implemented an enhancement to the constant folding feature to 3777transform the parse tree to a simple Store operation whenever possible: 3778 Add (2, 3, X) ==> is converted to: Store (5, X) 3779 X = 2 + 3 ==> is converted to: Store (5, X) 3780 3781Updated support for the SLIC table (Software Licensing Description Table) 3782in both the Data Table compiler and the disassembler. The SLIC table 3783support now conforms to "Microsoft Software Licensing Tables (SLIC and 3784MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data 3785following the ACPI header is now defined to be "Proprietary Data", and as 3786such, can only be entered or displayed as a hex data block. 3787 3788Implemented full support for the MSDM table as described in the document 3789above. Note: The format of MSDM is similar to SLIC. Any MSDM data 3790following the ACPI header is defined to be "Proprietary Data", and can 3791only be entered or displayed as a hex data block. 3792 3793Implemented the -Pn option for the iASL Table Compiler (was only 3794implemented for the ASL compiler). This option disables the iASL 3795preprocessor. 3796 3797Disassembler: For disassembly of Data Tables, added a comment field 3798around the Ascii equivalent data that is emitted as part of the "Raw 3799Table Data" block. This prevents the iASL Preprocessor from possible 3800confusion if/when the table is compiled. 3801 3802Disassembler: Added an option (-df) to force the disassembler to assume 3803that the table being disassembled contains valid AML. This feature is 3804useful for disassembling AML files that contain ACPI signatures other 3805than DSDT or SSDT (such as OEMx or other signatures). 3806 3807Changes for the EFI version of the tools: 38081) Fixed a build error/issue 38092) Fixed a cast warning 3810 3811iASL: Fixed a path issue with the __FILE__ operator by making the 3812directory prefix optional within the internal SplitInputFilename 3813function. 3814 3815Debugger: Removed some unused global variables. 3816 3817Tests: Updated the makefile for proper generation of the AAPITS suite. 3818 3819 3820---------------------------------------- 382104 February 2015. Summary of changes for version 20150204: 3822 3823ACPICA kernel-resident subsystem: 3824 3825Updated all ACPICA copyrights and signons to 2014. Added the 2014 3826copyright to all module headers and signons, including the standard Linux 3827header. This affects virtually every file in the ACPICA core subsystem, 3828iASL compiler, all ACPICA utilities, and the test suites. 3829 3830Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues. 3831A raw gpe handling mechanism was created to allow better handling of GPE 3832storms that aren't easily managed by the normal handler. The raw handler 3833allows disabling/renabling of the GPE so that interrupt storms can be 3834avoided in cases where events cannot be timely serviced. In this 3835scenario, handlers should use the AcpiSetGpe() API to disable/enable the 3836GPE. This API will leave the reference counts undisturbed, thereby 3837preventing unintentional clearing of the GPE when the intent in only to 3838temporarily disable it. Raw handlers allow enabling and disabling of a 3839GPE by removing GPE register locking. As such, raw handlers much provide 3840their own locks while using GPE API's to protect access to GPE data 3841structures. 3842Lv Zheng 3843 3844Events: Always modify GPE registers under the GPE lock. 3845Applies GPE lock around AcpiFinishGpe() to protect access to GPE register 3846values. Reported as bug by joe.liu@apple.com. 3847 3848Unix makefiles: Separate option to disable optimizations and 3849_FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the 3850NOOPT disable option and creates a separate flag (NOFORTIFY) for this 3851purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined 3852errors when building ACPICA. This allows disabling the option without 3853also having to disable optimazations. 3854David Box 3855 3856 Current Release: 3857 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 3858 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total 3859 3860-- 3861-------------------------------------- 386207 November 2014. Summary of changes for version 20141107: 3863 3864This release is available at https://acpica.org/downloads 3865 3866This release introduces and implements language extensions to ASL that 3867provide support for symbolic ("C-style") operators and expressions. These 3868language extensions are known collectively as ASL+. 3869 3870 38711) iASL Compiler/Disassembler and Tools: 3872 3873Disassembler: Fixed a problem with disassembly of the UartSerialBus 3874macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E. 3875Box. 3876 3877Disassembler: Fixed the Unicode macro support to add escape sequences. 3878All non-printable ASCII values are emitted as escape sequences, as well 3879as the standard escapes for quote and backslash. Ensures that the 3880disassembled macro can be correctly recompiled. 3881 3882iASL: Added Printf/Fprintf macros for formatted output. These macros are 3883translated to existing AML Concatenate and Store operations. Printf 3884writes to the ASL Debug object. Fprintf allows the specification of an 3885ASL name as the target. Only a single format specifier is required, %o, 3886since the AML interpreter dynamically converts objects to the required 3887type. David E. Box. 3888 3889 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 3890 (Concatenate (Concatenate (Concatenate ("", Arg0), 3891 ": Unexpected value for "), Arg1), ", "), Arg2), 3892 " at line "), Arg3), Debug) 3893 3894 (new) Printf ("%o: Unexpected value for %o, %o at line %o", 3895 Arg0, Arg1, Arg2, Arg3) 3896 3897 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 3898 ("", Arg1), ": "), Arg0), " Successful"), STR1) 3899 3900 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0) 3901 3902iASL: Added debug options (-bp, -bt) to dynamically prune levels of the 3903ASL parse tree before the AML code is generated. This allows blocks of 3904ASL code to be removed in order to help locate and identify problem 3905devices and/or code. David E. Box. 3906 3907AcpiExec: Added support (-fi) for an optional namespace object 3908initialization file. This file specifies initial values for namespace 3909objects as necessary for debugging and testing different ASL code paths 3910that may be taken as a result of BIOS options. 3911 3912 39132) Overview of symbolic operator support for ASL (ASL+) 3914------------------------------------------------------- 3915 3916As an extension to the ASL language, iASL implements support for symbolic 3917(C-style) operators for math and logical expressions. This can greatly 3918simplify ASL code as well as improve both readability and 3919maintainability. These language extensions can exist concurrently with 3920all legacy ASL code and expressions. 3921 3922The symbolic extensions are 100% compatible with existing AML 3923interpreters, since no new AML opcodes are created. To implement the 3924extensions, the iASL compiler transforms the symbolic expressions into 3925the legacy ASL/AML equivalents at compile time. 3926 3927Full symbolic expressions are supported, along with the standard C 3928precedence and associativity rules. 3929 3930Full disassembler support for the symbolic expressions is provided, and 3931creates an automatic migration path for existing ASL code to ASL+ code 3932via the disassembly process. By default, the disassembler now emits ASL+ 3933code with symbolic expressions. An option (-dl) is provided to force the 3934disassembler to emit legacy ASL code if desired. 3935 3936Below is the complete list of the currently supported symbolic operators 3937with examples. See the iASL User Guide for additional information. 3938 3939 3940ASL+ Syntax Legacy ASL Equivalent 3941----------- --------------------- 3942 3943 // Math operators 3944 3945Z = X + Y Add (X, Y, Z) 3946Z = X - Y Subtract (X, Y, Z) 3947Z = X * Y Multiply (X, Y, Z) 3948Z = X / Y Divide (X, Y, , Z) 3949Z = X % Y Mod (X, Y, Z) 3950Z = X << Y ShiftLeft (X, Y, Z) 3951Z = X >> Y ShiftRight (X, Y, Z) 3952Z = X & Y And (X, Y, Z) 3953Z = X | Y Or (X, Y, Z) 3954Z = X ^ Y Xor (X, Y, Z) 3955Z = ~X Not (X, Z) 3956X++ Increment (X) 3957X-- Decrement (X) 3958 3959 // Logical operators 3960 3961(X == Y) LEqual (X, Y) 3962(X != Y) LNotEqual (X, Y) 3963(X < Y) LLess (X, Y) 3964(X > Y) LGreater (X, Y) 3965(X <= Y) LLessEqual (X, Y) 3966(X >= Y) LGreaterEqual (X, Y) 3967(X && Y) LAnd (X, Y) 3968(X || Y) LOr (X, Y) 3969(!X) LNot (X) 3970 3971 // Assignment and compound assignment operations 3972 3973X = Y Store (Y, X) 3974X += Y Add (X, Y, X) 3975X -= Y Subtract (X, Y, X) 3976X *= Y Multiply (X, Y, X) 3977X /= Y Divide (X, Y, , X) 3978X %= Y Mod (X, Y, X) 3979X <<= Y ShiftLeft (X, Y, X) 3980X >>= Y ShiftRight (X, Y, X) 3981X &= Y And (X, Y, X) 3982X |= Y Or (X, Y, X) 3983X ^= Y Xor (X, Y, X) 3984 3985 39863) ASL+ Examples: 3987----------------- 3988 3989Legacy ASL: 3990 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual ( 3991 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530, 39920x03FB), 3993 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0)))) 3994 { 3995 And (MEMB, 0xFFFFFFF0, SRMB) 3996 Store (MEMB, Local2) 3997 Store (PDBM, Local1) 3998 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM) 3999 Store (SRMB, MEMB) 4000 Or (PDBM, 0x02, PDBM) 4001 } 4002 4003ASL+ version: 4004 If (((R510 & 0x03FB) == 0x02E0) || 4005 ((R520 & 0x03FB) == 0x02E0) || 4006 ((R530 & 0x03FB) == 0x02E0) || 4007 ((R540 & 0x03FB) == 0x02E0)) 4008 { 4009 SRMB = (MEMB & 0xFFFFFFF0) 4010 Local2 = MEMB 4011 Local1 = PDBM 4012 PDBM &= 0xFFFFFFFFFFFFFFF9 4013 MEMB = SRMB 4014 PDBM |= 0x02 4015 } 4016 4017Legacy ASL: 4018 Store (0x1234, Local1) 4019 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3) 4020 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3) 4021 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3) 4022 Store (Index (PKG1, 0x03), Local6) 4023 Store (Add (Local3, Local2), Debug) 4024 Add (Local1, 0x0F, Local2) 4025 Add (Local1, Multiply (Local2, Local3), Local2) 4026 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3) 4027 4028ASL+ version: 4029 Local1 = 0x1234 4030 Local3 = (((Local1 + TEST) + 0x20) * Local2) 4031 Local3 = (Local2 * ((Local1 + TEST) + 0x20)) 4032 Local3 = (Local1 + (TEST + (0x20 * Local2))) 4033 Local6 = Index (PKG1, 0x03) 4034 Debug = (Local3 + Local2) 4035 Local2 = (Local1 + 0x0F) 4036 Local2 = (Local1 + (Local2 * Local3)) 4037 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1)) 4038 4039 4040---------------------------------------- 404126 September 2014. Summary of changes for version 20140926: 4042 40431) ACPICA kernel-resident subsystem: 4044 4045Updated the GPIO operation region handler interface (GeneralPurposeIo). 4046In order to support GPIO Connection objects with multiple pins, along 4047with the related Field objects, the following changes to the interface 4048have been made: The Address is now defined to be the offset in bits of 4049the field unit from the previous invocation of a Connection. It can be 4050viewed as a "Pin Number Index" into the connection resource descriptor. 4051The BitWidth is the exact bit width of the field. It is usually one bit, 4052but not always. See the ACPICA reference guide (section 8.8.6.2.1) for 4053additional information and examples. 4054 4055GPE support: During ACPICA/GPE initialization, ensure that all GPEs with 4056corresponding _Lxx/_Exx methods are disabled (they may have been enabled 4057by the firmware), so that they cannot fire until they are enabled via 4058AcpiUpdateAllGpes. Rafael J. Wysocki. 4059 4060Added a new return flag for the Event/GPE status interfaces -- 4061AcpiGetEventStatus and AcpiGetGpeStatus. The new 4062ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or 4063GPE currently has a handler associated with it, and can thus actually 4064affect the system. Lv Zheng. 4065 4066Example Code and Data Size: These are the sizes for the OS-independent 4067acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4068debug version of the code includes the debug output trace mechanism and 4069has a much larger code and data size. 4070 4071 Current Release: 4072 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 4073 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 4074 Previous Release: 4075 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 4076 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 4077 40782) iASL Compiler/Disassembler and Tools: 4079 4080iASL: Fixed a memory allocation/free regression introduced in 20140828 4081that could cause the compiler to crash. This was introduced inadvertently 4082during the effort to eliminate compiler memory leaks. ACPICA BZ 1111, 40831113. 4084 4085iASL: Removed two error messages that have been found to create false 4086positives, until they can be fixed and fully validated (ACPICA BZ 1112): 40871) Illegal forward reference within a method 40882) Illegal reference across two methods 4089 4090iASL: Implemented a new option (-lm) to create a hardware mapping file 4091that summarizes all GPIO, I2C, SPI, and UART connections. This option 4092works for both the compiler and disassembler. See the iASL compiler user 4093guide for additional information and examples (section 6.4.6). 4094 4095AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to 4096version 2. This corrects the AE_BAD_HEADER exception seen on systems with 4097a version 1 RSDP. Lv Zheng ACPICA BZ 1097. 4098 4099AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode 4100unless STDIN is actually a terminal. Assists with batch-mode processing. 4101ACPICA BZ 1114. 4102 4103Disassembler/AcpiHelp: Added another large group of recognized _HID 4104values. 4105 4106 4107---------------------------------------- 410828 August 2014. Summary of changes for version 20140828: 4109 41101) ACPICA kernel-resident subsystem: 4111 4112Fixed a problem related to the internal use of the Timer() operator where 4113a 64-bit divide could cause an attempted link to a double-precision math 4114library. This divide is not actually necessary, so the code was 4115restructured to eliminate it. Lv Zheng. 4116 4117ACPI 5.1: Added support for the runtime validation of the _DSD package 4118(similar to the iASL support). 4119 4120ACPI 5.1/Headers: Added support for the GICC affinity subtable to the 4121SRAT table. Hanjun Guo <hanjun.guo@linaro.org>. 4122 4123Example Code and Data Size: These are the sizes for the OS-independent 4124acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4125debug version of the code includes the debug output trace mechanism and 4126has a much larger code and data size. 4127 4128 Current Release: 4129 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 4130 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 4131 Previous Release: 4132 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1 4133 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 4134 41352) iASL Compiler/Disassembler and Tools: 4136 4137AcpiExec: Fixed a problem on unix systems where the original terminal 4138state was not always properly restored upon exit. Seen when using the -v 4139option. ACPICA BZ 1104. 4140 4141iASL: Fixed a problem with the validation of the ranges/length within the 4142Memory24 resource descriptor. There was a boundary condition when the 4143range was equal to the (length -1) caused by the fact that these values 4144are defined in 256-byte blocks, not bytes. ACPICA BZ 1098 4145 4146Disassembler: Fixed a problem with the GpioInt descriptor interrupt 4147polarity 4148flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword 4149is 4150now supported properly. 4151 4152ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported 4153in the disassembler, data table compiler, and table template generator. 4154 4155iASL: Added a requirement for Device() objects that one of either a _HID 4156or _ADR must exist within the scope of a Device, as per the ACPI 4157specification. Remove a similar requirement that was incorrectly in place 4158for the _DSD object. 4159 4160iASL: Added error detection for illegal named references within control 4161methods that would cause runtime failures. Now trapped as errors are: 1) 4162References to objects within a non-parent control method. 2) Forward 4163references (within a method) -- for control methods, AML interpreters use 4164a one-pass parse of control methods. ACPICA BZ 1008. 4165 4166iASL: Added error checking for dependencies related to the _PSx power 4167methods. ACPICA BZ 1029. 41681) For _PS0, one of these must exist within the same scope: _PS1, _PS2, 4169_PS3. 41702) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same 4171scope. 4172 4173iASL and table compiler: Cleanup miscellaneous memory leaks by fully 4174deploying the existing object and string caches and adding new caches for 4175the table compiler. 4176 4177iASL: Split the huge parser source file into multiple subfiles to improve 4178manageability. Generation now requires the M4 macro preprocessor, which 4179is part of the Bison distribution on both unix and windows platforms. 4180 4181AcpiSrc: Fixed and removed all extraneous warnings generated during 4182entire ACPICA source code scan and/or conversion. 4183 4184 4185---------------------------------------- 4186 418724 July 2014. Summary of changes for version 20140724: 4188 4189The ACPI 5.1 specification has been released and is available at: 4190http://uefi.org/specs/access 4191 4192 41930) ACPI 5.1 support in ACPICA: 4194 4195ACPI 5.1 is fully supported in ACPICA as of this release. 4196 4197New predefined names. Support includes iASL and runtime ACPICA 4198validation. 4199 _CCA (Cache Coherency Attribute). 4200 _DSD (Device-Specific Data). David Box. 4201 4202Modifications to existing ACPI tables. Support includes headers, iASL 4203Data Table compiler, disassembler, and the template generator. 4204 FADT - New fields and flags. Graeme Gregory. 4205 GTDT - One new subtable and new fields. Tomasz Nowicki. 4206 MADT - Two new subtables. Tomasz Nowicki. 4207 PCCT - One new subtable. 4208 4209Miscellaneous. 4210 New notification type for System Resource Affinity change events. 4211 4212 42131) ACPICA kernel-resident subsystem: 4214 4215Fixed a regression introduced in 20140627 where a fault can happen during 4216the deletion of Alias AML namespace objects. The problem affected both 4217the core ACPICA and the ACPICA tools including iASL and AcpiExec. 4218 4219Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a 4220simple mechanism to enable wake GPEs that have no associated handler or 4221control method. Rafael Wysocki. 4222 4223Updated the AcpiEnableGpe interface to disallow the enable if there is no 4224handler or control method associated with the particular GPE. This will 4225help avoid meaningless GPEs and even GPE floods. Rafael Wysocki. 4226 4227Updated GPE handling and dispatch by disabling the GPE before clearing 4228the status bit for edge-triggered GPEs. Lv Zheng. 4229 4230Added Timer() support to the AML Debug object. The current timer value is 4231now displayed with each invocation of (Store to) the debug object to 4232enable simple generation of execution times for AML code (method 4233execution for example.) ACPICA BZ 1093. 4234 4235Example Code and Data Size: These are the sizes for the OS-independent 4236acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4237debug version of the code includes the debug output trace mechanism and 4238has a much larger code and data size. 4239 4240 Current Release: 4241 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total 4242 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 4243 Previous Release: 4244 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 4245 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 4246 4247 42482) iASL Compiler/Disassembler and Tools: 4249 4250Fixed an issue with the recently added local printf implementation, 4251concerning width/precision specifiers that could cause incorrect output. 4252Lv Zheng. ACPICA BZ 1094. 4253 4254Disassembler: Added support to detect buffers that contain UUIDs and 4255disassemble them to an invocation of the ToUUID operator. Also emit 4256commented descriptions of known ACPI-related UUIDs. 4257 4258AcpiHelp: Added support to display known ACPI-related UUIDs. New option, 4259-u. Adds three new files. 4260 4261iASL: Update table compiler and disassembler for DMAR table changes that 4262were introduced in September 2013. With assistance by David Woodhouse. 4263 4264---------------------------------------- 426527 June 2014. Summary of changes for version 20140627: 4266 42671) ACPICA kernel-resident subsystem: 4268 4269Formatted Output: Implemented local versions of standard formatted output 4270utilities such as printf, etc. Over time, it has been discovered that 4271there are in fact many portability issues with printf, and the addition 4272of this feature will fix/prevent these issues once and for all. Some 4273known issues are summarized below: 4274 42751) Output of 64-bit values is not portable. For example, UINT64 is %ull 4276for the Linux kernel and is %uI64 for some MSVC versions. 42772) Invoking printf consistently in a manner that is portable across both 427832-bit and 64-bit platforms is difficult at best in many situations. 42793) The output format for pointers varies from system to system (leading 4280zeros especially), and leads to inconsistent output from ACPICA across 4281platforms. 42824) Certain platform-specific printf formats may conflict with ACPICA use. 42835) If there is no local C library available, ACPICA now has local support 4284for printf. 4285 4286-- To address these printf issues in a complete manner, ACPICA now 4287directly implements a small subset of printf format specifiers, only 4288those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng. 4289 4290Implemented support for ACPICA generation within the EFI environment. 4291Initially, the AcpiDump utility is supported in the UEFI shell 4292environment. Lv Zheng. 4293 4294Added a new external interface, AcpiLogError, to improve ACPICA 4295portability. This allows the host to redirect error messages from the 4296ACPICA utilities. Lv Zheng. 4297 4298Added and deployed new OSL file I/O interfaces to improve ACPICA 4299portability: 4300 AcpiOsOpenFile 4301 AcpiOsCloseFile 4302 AcpiOsReadFile 4303 AcpiOsWriteFile 4304 AcpiOsGetFileOffset 4305 AcpiOsSetFileOffset 4306There are C library implementations of these functions in the new file 4307service_layers/oslibcfs.c -- however, the functions can be implemented by 4308the local host in any way necessary. Lv Zheng. 4309 4310Implemented a mechanism to disable/enable ACPI table checksum validation 4311at runtime. This can be useful when loading tables very early during OS 4312initialization when it may not be possible to map the entire table in 4313order to compute the checksum. Lv Zheng. 4314 4315Fixed a buffer allocation issue for the Generic Serial Bus support. 4316Originally, a fixed buffer length was used. This change allows for 4317variable-length buffers based upon the protocol indicated by the field 4318access attributes. Reported by Lan Tianyu. Lv Zheng. 4319 4320Fixed a problem where an object detached from a namespace node was not 4321properly terminated/cleared and could cause a circular list problem if 4322reattached. ACPICA BZ 1063. David Box. 4323 4324Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick. 4325 4326Fixed a possible memory leak in an error return path within the function 4327AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King. 4328 4329Example Code and Data Size: These are the sizes for the OS-independent 4330acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4331debug version of the code includes the debug output trace mechanism and 4332has a much larger code and data size. 4333 4334 Current Release: 4335 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 4336 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 4337 Previous Release: 4338 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 4339 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 4340 4341 43422) iASL Compiler/Disassembler and Tools: 4343 4344Disassembler: Add dump of ASCII equivalent text within a comment at the 4345end of each line of the output for the Buffer() ASL operator. 4346 4347AcpiDump: Miscellaneous changes: 4348 Fixed repetitive table dump in -n mode. 4349 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if 4350the ACPI 2.0 GUID fails. 4351 4352iASL: Fixed a problem where the compiler could fault if incorrectly given 4353an acpidump output file as input. ACPICA BZ 1088. David Box. 4354 4355AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if 4356they are invoked without any arguments. 4357 4358Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ 43591086. Colin Ian King. 4360 4361Disassembler: Cleaned up a block of code that extracts a parent Op 4362object. Added a comment that explains that the parent is guaranteed to be 4363valid in this case. ACPICA BZ 1069. 4364 4365 4366---------------------------------------- 436724 April 2014. Summary of changes for version 20140424: 4368 43691) ACPICA kernel-resident subsystem: 4370 4371Implemented support to skip/ignore NULL address entries in the RSDT/XSDT. 4372Some of these tables are known to contain a trailing NULL entry. Lv 4373Zheng. 4374 4375Removed an extraneous error message for the case where there are a large 4376number of system GPEs (> 124). This was the "32-bit FADT register is too 4377long to convert to GAS struct" message, which is irrelevant for GPEs 4378since the GPEx_BLK_LEN fields of the FADT are always used instead of the 4379(limited capacity) GAS bit length. Also, several changes to ensure proper 4380support for GPE numbers > 255, where some "GPE number" fields were 8-bits 4381internally. 4382 4383Implemented and deployed additional configuration support for the public 4384ACPICA external interfaces. Entire classes of interfaces can now be 4385easily modified or configured out, replaced by stubbed inline functions 4386by default. Lv Zheng. 4387 4388Moved all public ACPICA runtime configuration globals to the public 4389ACPICA external interface file for convenience. Also, removed some 4390obsolete/unused globals. See the file acpixf.h. Lv Zheng. 4391 4392Documentation: Added a new section to the ACPICA reference describing the 4393maximum number of GPEs that can be supported by the FADT-defined GPEs in 4394block zero and one. About 1200 total. See section 4.4.1 of the ACPICA 4395reference. 4396 4397Example Code and Data Size: These are the sizes for the OS-independent 4398acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4399debug version of the code includes the debug output trace mechanism and 4400has a much larger code and data size. 4401 4402 Current Release: 4403 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 4404 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 4405 Previous Release: 4406 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 4407 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 4408 4409 44102) iASL Compiler/Disassembler and Tools: 4411 4412iASL and disassembler: Add full support for the LPIT table (Low Power 4413Idle Table). Includes support in the disassembler, data table compiler, 4414and template generator. 4415 4416AcpiDump utility: 44171) Add option to force the use of the RSDT (over the XSDT). 44182) Improve validation of the RSDP signature (use 8 chars instead of 4). 4419 4420iASL: Add check for predefined packages that are too large. For 4421predefined names that contain subpackages, check if each subpackage is 4422too large. (Check for too small already exists.) 4423 4424Debugger: Updated the GPE command (which simulates a GPE by executing the 4425GPE code paths in ACPICA). The GPE device is now optional, and defaults 4426to the GPE 0/1 FADT-defined blocks. 4427 4428Unix application OSL: Update line-editing support. Add additional error 4429checking and take care not to reset terminal attributes on exit if they 4430were never set. This should help guarantee that the terminal is always 4431left in the previous state on program exit. 4432 4433 4434---------------------------------------- 443525 March 2014. Summary of changes for version 20140325: 4436 44371) ACPICA kernel-resident subsystem: 4438 4439Updated the auto-serialize feature for control methods. This feature 4440automatically serializes all methods that create named objects in order 4441to prevent runtime errors. The update adds support to ignore the 4442currently executing AML SyncLevel when invoking such a method, in order 4443to prevent disruption of any existing SyncLevel priorities that may exist 4444in the AML code. Although the use of SyncLevels is relatively rare, this 4445change fixes a regression where an AE_AML_MUTEX_ORDER exception can 4446appear on some machines starting with the 20140214 release. 4447 4448Added a new external interface to allow the host to install ACPI tables 4449very early, before the namespace is even created. AcpiInstallTable gives 4450the host additional flexibility for ACPI table management. Tables can be 4451installed directly by the host as if they had originally appeared in the 4452XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables 4453(anything except the DSDT and FACS). Adds a new file, tbdata.c, along 4454with additional internal restructuring and cleanup. See the ACPICA 4455Reference for interface details. Lv Zheng. 4456 4457Added validation of the checksum for all incoming dynamically loaded 4458tables (via external interfaces or via AML Load/LoadTable operators). Lv 4459Zheng. 4460 4461Updated the use of the AcpiOsWaitEventsComplete interface during Notify 4462and GPE handler removal. Restructured calls to eliminate possible race 4463conditions. Lv Zheng. 4464 4465Added a warning for the use/execution of the ASL/AML Unload (table) 4466operator. This will help detect and identify machines that use this 4467operator if and when it is ever used. This operator has never been seen 4468in the field and the usage model and possible side-effects of the drastic 4469runtime action of a full table removal are unknown. 4470 4471Reverted the use of #pragma push/pop which was introduced in the 20140214 4472release. It appears that push and pop are not implemented by enough 4473compilers to make the use of this feature feasible for ACPICA at this 4474time. However, these operators may be deployed in a future ACPICA 4475release. 4476 4477Added the missing EXPORT_SYMBOL macros for the install and remove SCI 4478handler interfaces. 4479 4480Source code generation: 44811) Disabled the use of the "strchr" macro for the gcc-specific 4482generation. For some versions of gcc, this macro can periodically expose 4483a compiler bug which in turn causes compile-time error(s). 44842) Added support for PPC64 compilation. Colin Ian King. 4485 4486Example Code and Data Size: These are the sizes for the OS-independent 4487acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4488debug version of the code includes the debug output trace mechanism and 4489has a much larger code and data size. 4490 4491 Current Release: 4492 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 4493 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 4494 Previous Release: 4495 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 4496 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 4497 4498 44992) iASL Compiler/Disassembler and Tools: 4500 4501Disassembler: Added several new features to improve the readability of 4502the resulting ASL code. Extra information is emitted within comment 4503fields in the ASL code: 45041) Known _HID/_CID values are decoded to descriptive text. 45052) Standard values for the Notify() operator are decoded to descriptive 4506text. 45073) Target operands are expanded to full pathnames (in a comment) when 4508possible. 4509 4510Disassembler: Miscellaneous updates for extern() handling: 45111) Abort compiler if file specified by -fe option does not exist. 45122) Silence unnecessary warnings about argument count mismatches. 45133) Update warning messages concerning unresolved method externals. 45144) Emit "UnknownObj" keyword for externals whose type cannot be 4515determined. 4516 4517AcpiHelp utility: 45181) Added the -a option to display both the ASL syntax and the AML 4519encoding for an input ASL operator. This effectively displays all known 4520information about an ASL operator with one AcpiHelp invocation. 45212) Added substring match support (similar to a wildcard) for the -i 4522(_HID/PNP IDs) option. 4523 4524iASL/Disassembler: Since this tool does not yet support execution on big- 4525endian machines, added detection of endianness and an error message if 4526execution is attempted on big-endian. Support for big-endian within iASL 4527is a feature that is on the ACPICA to-be-done list. 4528 4529AcpiBin utility: 45301) Remove option to extract binary files from an acpidump; this function 4531is made obsolete by the AcpiXtract utility. 45322) General cleanup of open files and allocated buffers. 4533 4534 4535---------------------------------------- 453614 February 2014. Summary of changes for version 20140214: 4537 45381) ACPICA kernel-resident subsystem: 4539 4540Implemented a new mechanism to proactively prevent problems with ill- 4541behaved reentrant control methods that create named ACPI objects. This 4542behavior is illegal as per the ACPI specification, but is nonetheless 4543frequently seen in the field. Previously, this could lead to an 4544AE_ALREADY_EXISTS exception if the method was actually entered by more 4545than one thread. This new mechanism detects such methods at table load 4546time and marks them "serialized" to prevent reentrancy. A new global 4547option, AcpiGbl_AutoSerializeMethods, has been added to disable this 4548feature if desired. This mechanism and global option obsoletes and 4549supersedes the previous AcpiGbl_SerializeAllMethods option. 4550 4551Added the "Windows 2013" string to the _OSI support. ACPICA will now 4552respond TRUE to _OSI queries with this string. It is the stated policy of 4553ACPICA to add new strings to the _OSI support as soon as possible after 4554they are defined. See the full ACPICA _OSI policy which has been added to 4555the utilities/utosi.c file. 4556 4557Hardened/updated the _PRT return value auto-repair code: 45581) Do not abort the repair on a single subpackage failure, continue to 4559check all subpackages. 45602) Add check for the minimum subpackage length (4). 45613) Properly handle extraneous NULL package elements. 4562 4563Added support to avoid the possibility of infinite loops when traversing 4564object linked lists. Never allow an infinite loop, even in the face of 4565corrupted object lists. 4566 4567ACPICA headers: Deployed the use of #pragma pack(push) and #pragma 4568pack(pop) directives to ensure that the ACPICA headers are independent of 4569compiler settings or other host headers. 4570 4571Example Code and Data Size: These are the sizes for the OS-independent 4572acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4573debug version of the code includes the debug output trace mechanism and 4574has a much larger code and data size. 4575 4576 Current Release: 4577 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 4578 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 4579 Previous Release: 4580 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 4581 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 4582 4583 45842) iASL Compiler/Disassembler and Tools: 4585 4586iASL/Table-compiler: Fixed a problem with support for the SPMI table. The 4587first reserved field was incorrectly forced to have a value of zero. This 4588change correctly forces the field to have a value of one. ACPICA BZ 1081. 4589 4590Debugger: Added missing support for the "Extra" and "Data" subobjects 4591when displaying object data. 4592 4593Debugger: Added support to display entire object linked lists when 4594displaying object data. 4595 4596iASL: Removed the obsolete -g option to obtain ACPI tables from the 4597Windows registry. This feature has been superseded by the acpidump 4598utility. 4599 4600 4601---------------------------------------- 460214 January 2014. Summary of changes for version 20140114: 4603 46041) ACPICA kernel-resident subsystem: 4605 4606Updated all ACPICA copyrights and signons to 2014. Added the 2014 4607copyright to all module headers and signons, including the standard Linux 4608header. This affects virtually every file in the ACPICA core subsystem, 4609iASL compiler, all ACPICA utilities, and the test suites. 4610 4611Improved parameter validation for AcpiInstallGpeBlock. Added the 4612following checks: 46131) The incoming device handle refers to type ACPI_TYPE_DEVICE. 46142) There is not already a GPE block attached to the device. 4615Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a 4616device. 4617 4618Correctly support "references" in the ACPI_OBJECT. This change fixes the 4619support to allow references (namespace nodes) to be passed as arguments 4620to control methods via the evaluate object interface. This is probably 4621most useful for testing purposes, however. 4622 4623Improved support for 32/64 bit physical addresses in printf()-like 4624output. This change improves the support for physical addresses in printf 4625debug statements and other output on both 32-bit and 64-bit hosts. It 4626consistently outputs the appropriate number of bytes for each host. The 4627%p specifier is unsatisfactory since it does not emit uniform output on 4628all hosts/clib implementations (on some, leading zeros are not supported, 4629leading to difficult-to-read output). 4630 4631Example Code and Data Size: These are the sizes for the OS-independent 4632acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4633debug version of the code includes the debug output trace mechanism and 4634has a much larger code and data size. 4635 4636 Current Release: 4637 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 4638 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 4639 Previous Release: 4640 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 4641 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 4642 4643 46442) iASL Compiler/Disassembler and Tools: 4645 4646iASL: Fix a possible fault when using the Connection() operator. Fixes a 4647problem if the parent Field definition for the Connection operator refers 4648to an operation region that does not exist. ACPICA BZ 1064. 4649 4650AcpiExec: Load of local test tables is now optional. The utility has the 4651capability to load some various tables to test features of ACPICA. 4652However, there are enough of them that the output of the utility became 4653confusing. With this change, only the required local tables are displayed 4654(RSDP, XSDT, etc.) along with the actual tables loaded via the command 4655line specification. This makes the default output simler and easier to 4656understand. The -el command line option restores the original behavior 4657for testing purposes. 4658 4659AcpiExec: Added support for overlapping operation regions. This change 4660expands the simulation of operation regions by supporting regions that 4661overlap within the given address space. Supports SystemMemory and 4662SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031. 4663 4664AcpiExec: Added region handler support for PCI_Config and EC spaces. This 4665allows AcpiExec to simulate these address spaces, similar to the current 4666support for SystemMemory and SystemIO. 4667 4668Debugger: Added new command to read/write/compare all namespace objects. 4669The command "test objects" will exercise the entire namespace by writing 4670new values to each data object, and ensuring that the write was 4671successful. The original value is then restored and verified. 4672 4673Debugger: Added the "test predefined" command. This change makes this 4674test public and puts it under the new "test" command. The test executes 4675each and every predefined name within the current namespace. 4676 4677 4678---------------------------------------- 467918 December 2013. Summary of changes for version 20131218: 4680 4681Global note: The ACPI 5.0A specification was released this month. There 4682are no changes needed for ACPICA since this release of ACPI is an 4683errata/clarification release. The specification is available at 4684acpi.info. 4685 4686 46871) ACPICA kernel-resident subsystem: 4688 4689Added validation of the XSDT root table if it is present. Some older 4690platforms contain an XSDT that is ill-formed or otherwise invalid (such 4691as containing some or all entries that are NULL pointers). This change 4692adds a new function to validate the XSDT before actually using it. If the 4693XSDT is found to be invalid, ACPICA will now automatically fall back to 4694using the RSDT instead. Original implementation by Zhao Yakui. Ported to 4695ACPICA and enhanced by Lv Zheng and Bob Moore. 4696 4697Added a runtime option to ignore the XSDT and force the use of the RSDT. 4698This change adds a runtime option that will force ACPICA to use the RSDT 4699instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec 4700requires that an XSDT be used instead of the RSDT, the XSDT has been 4701found to be corrupt or ill-formed on some machines. Lv Zheng. 4702 4703Added a runtime option to favor 32-bit FADT register addresses over the 470464-bit addresses. This change adds an option to favor 32-bit FADT 4705addresses when there is a conflict between the 32-bit and 64-bit versions 4706of the same register. The default behavior is to use the 64-bit version 4707in accordance with the ACPI specification. This can now be overridden via 4708the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng. 4709 4710During the change above, the internal "Convert FADT" and "Verify FADT" 4711functions have been merged to simplify the code, making it easier to 4712understand and maintain. ACPICA BZ 933. 4713 4714Improve exception reporting and handling for GPE block installation. 4715Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the 4716status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019. 4717 4718Added helper macros to extract bus/segment numbers from the HEST table. 4719This change adds two macros to extract the encoded bus and segment 4720numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT. 4721Betty Dall <betty.dall@hp.com> 4722 4723Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used 4724by ACPICA. It is not a public macro, so it should have no effect on 4725existing OSV code. Lv Zheng. 4726 4727Example Code and Data Size: These are the sizes for the OS-independent 4728acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4729debug version of the code includes the debug output trace mechanism and 4730has a much larger code and data size. 4731 4732 Current Release: 4733 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 4734 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 4735 Previous Release: 4736 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 4737 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 4738 4739 47402) iASL Compiler/Disassembler and Tools: 4741 4742Disassembler: Improved pathname support for emitted External() 4743statements. This change adds full pathname support for external names 4744that have been resolved internally by the inclusion of additional ACPI 4745tables (via the iASL -e option). Without this change, the disassembler 4746can emit multiple externals for the same object, or it become confused 4747when the Scope() operator is used on an external object. Overall, greatly 4748improves the ability to actually recompile the emitted ASL code when 4749objects a referenced across multiple ACPI tables. Reported by Michael 4750Tsirkin (mst@redhat.com). 4751 4752Tests/ASLTS: Updated functional control suite to execute with no errors. 4753David Box. Fixed several errors related to the testing of the interpreter 4754slack mode. Lv Zheng. 4755 4756iASL: Added support to detect names that are declared within a control 4757method, but are unused (these are temporary names that are only valid 4758during the time the method is executing). A remark is issued for these 4759cases. ACPICA BZ 1022. 4760 4761iASL: Added full support for the DBG2 table. Adds full disassembler, 4762table compiler, and template generator support for the DBG2 table (Debug 4763Port 2 table). 4764 4765iASL: Added full support for the PCCT table, update the table definition. 4766Updates the PCCT table definition in the actbl3.h header and adds table 4767compiler and template generator support. 4768 4769iASL: Added an option to emit only error messages (no warnings/remarks). 4770The -ve option will enable only error messages, warnings and remarks are 4771suppressed. This can simplify debugging when only the errors are 4772important, such as when an ACPI table is disassembled and there are many 4773warnings and remarks -- but only the actual errors are of real interest. 4774 4775Example ACPICA code (source/tools/examples): Updated the example code so 4776that it builds to an actual working program, not just example code. Added 4777ACPI tables and execution of an example control method in the DSDT. Added 4778makefile support for Unix generation. 4779 4780 4781---------------------------------------- 478215 November 2013. Summary of changes for version 20131115: 4783 4784This release is available at https://acpica.org/downloads 4785 4786 47871) ACPICA kernel-resident subsystem: 4788 4789Resource Manager: Fixed loop termination for the "get AML length" 4790function. The loop previously had an error termination on a NULL resource 4791pointer, which can never happen since the loop simply increments a valid 4792resource pointer. This fix changes the loop to terminate with an error on 4793an invalid end-of-buffer condition. The problem can be seen as an 4794infinite loop by callers to AcpiSetCurrentResources with an invalid or 4795corrupted resource descriptor, or a resource descriptor that is missing 4796an END_TAG descriptor. Reported by Dan Carpenter 4797<dan.carpenter@oracle.com>. Lv Zheng, Bob Moore. 4798 4799Table unload and ACPICA termination: Delete all attached data objects 4800during namespace node deletion. This fix updates namespace node deletion 4801to delete the entire list of attached objects (attached via 4802AcpiAttachObject) instead of just one of the attached items. ACPICA BZ 48031024. Tomasz Nowicki (tomasz.nowicki@linaro.org). 4804 4805ACPICA termination: Added support to delete all objects attached to the 4806root namespace node. This fix deletes any and all objects that have been 4807attached to the root node via AcpiAttachData. Previously, none of these 4808objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026. 4809 4810Debug output: Do not emit the function nesting level for the in-kernel 4811build. The nesting level is really only useful during a single-thread 4812execution. Therefore, only enable this output for the AcpiExec utility. 4813Also, only emit the thread ID when executing under AcpiExec (Context 4814switches are still always detected and a message is emitted). ACPICA BZ 4815972. 4816 4817Example Code and Data Size: These are the sizes for the OS-independent 4818acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4819debug version of the code includes the debug output trace mechanism and 4820has a much larger code and data size. 4821 4822 Current Release: 4823 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 4824 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 4825 Previous Release: 4826 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 4827 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 4828 4829 48302) iASL Compiler/Disassembler and Tools: 4831 4832AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the 4833correct portable POSIX header for terminal control functions. 4834 4835Disassembler: Fixed control method invocation issues related to the use 4836of the CondRefOf() operator. The problem is seen in the disassembly where 4837control method invocations may not be disassembled properly if the 4838control method name has been used previously as an argument to CondRefOf. 4839The solution is to not attempt to emit an external declaration for the 4840CondRefOf target (it is not necessary in the first place). This prevents 4841disassembler object type confusion. ACPICA BZ 988. 4842 4843Unix Makefiles: Added an option to disable compiler optimizations and the 4844_FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA 4845with optimizations (reportedly, gcc 4.4 for example). This change adds a 4846command line option for make (NOOPT) that disables all compiler 4847optimizations and the _FORTIFY_SOURCE compiler flag. The default 4848optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ 48491034. Lv Zheng, Bob Moore. 4850 4851Tests/ASLTS: Added options to specify individual test cases and modes. 4852This allows testers running aslts.sh to optionally specify individual 4853test modes and test cases. Also added an option to disable the forced 4854generation of the ACPICA tools from source if desired. Lv Zheng. 4855 4856---------------------------------------- 485727 September 2013. Summary of changes for version 20130927: 4858 4859This release is available at https://acpica.org/downloads 4860 4861 48621) ACPICA kernel-resident subsystem: 4863 4864Fixed a problem with store operations to reference objects. This change 4865fixes a problem where a Store operation to an ArgX object that contained 4866a 4867reference to a field object did not complete the automatic dereference 4868and 4869then write to the actual field object. Instead, the object type of the 4870field object was inadvertently changed to match the type of the source 4871operand. The new behavior will actually write to the field object (buffer 4872field or field unit), thus matching the correct ACPI-defined behavior. 4873 4874Implemented support to allow the host to redefine individual OSL 4875prototypes. This change enables the host to redefine OSL prototypes found 4876in the acpiosxf.h file. This allows the host to implement OSL interfaces 4877with a macro or inlined function. Further, it allows the host to add any 4878additional required modifiers such as __iomem, __init, __exit, etc., as 4879necessary on a per-interface basis. Enables maximum flexibility for the 4880OSL interfaces. Lv Zheng. 4881 4882Hardcoded the access width for the FADT-defined reset register. The ACPI 4883specification requires the reset register width to be 8 bits. ACPICA now 4884hardcodes the width to 8 and ignores the FADT width value. This provides 4885compatibility with other ACPI implementations that have allowed BIOS code 4886with bad register width values to go unnoticed. Matthew Garett, Bob 4887Moore, 4888Lv Zheng. 4889 4890Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is 4891used 4892in the OSL header (acpiosxf). The change modifies the position of this 4893macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid 4894build issues if the OSL defines the implementation of the interface to be 4895an inline stub function. Lv Zheng. 4896 4897Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA 4898initialization interfaces. This change adds a new macro for the main init 4899and terminate external interfaces in order to support hosts that require 4900additional or different processing for these functions. Changed from 4901ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv 4902Zheng, Bob Moore. 4903 4904Cleaned up the memory allocation macros for configurability. In the 4905common 4906case, the ACPI_ALLOCATE and related macros now resolve directly to their 4907respective AcpiOs* OSL interfaces. Two options: 49081) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by 4909default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define. 49102) For AcpiExec (and for debugging), the macros can optionally be 4911resolved 4912to the local ACPICA interfaces that track each allocation (local tracking 4913is used to immediately detect memory leaks). 4914Lv Zheng. 4915 4916Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel 4917to predefine this macro to either TRUE or FALSE during the system build. 4918 4919Replaced __FUNCTION_ with __func__ in the gcc-specific header. 4920 4921Example Code and Data Size: These are the sizes for the OS-independent 4922acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4923debug version of the code includes the debug output trace mechanism and 4924has a much larger code and data size. 4925 4926 Current Release: 4927 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 4928 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 4929 Previous Release: 4930 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 4931 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 4932 4933 49342) iASL Compiler/Disassembler and Tools: 4935 4936iASL: Implemented wildcard support for the -e option. This simplifies use 4937when there are many SSDTs that must be included to resolve external 4938method 4939declarations. ACPICA BZ 1041. Example: 4940 iasl -e ssdt*.dat -d dsdt.dat 4941 4942AcpiExec: Add history/line-editing for Unix/Linux systems. This change 4943adds a portable module that implements full history and limited line 4944editing for Unix and Linux systems. It does not use readline() due to 4945portability issues. Instead it uses the POSIX termio interface to put the 4946terminal in raw input mode so that the various special keys can be 4947trapped 4948(such as up/down-arrow for history support and left/right-arrow for line 4949editing). Uses the existing debugger history mechanism. ACPICA BZ 1036. 4950 4951AcpiXtract: Add support to handle (ignore) "empty" lines containing only 4952one or more spaces. This provides compatible with early or different 4953versions of the AcpiDump utility. ACPICA BZ 1044. 4954 4955AcpiDump: Do not ignore tables that contain only an ACPI table header. 4956Apparently, some BIOSs create SSDTs that contain an ACPI table header but 4957no other data. This change adds support to dump these tables. Any tables 4958shorter than the length of an ACPI table header remain in error (an error 4959message is emitted). Reported by Yi Li. 4960 4961Debugger: Echo actual command along with the "unknown command" message. 4962 4963---------------------------------------- 496423 August 2013. Summary of changes for version 20130823: 4965 49661) ACPICA kernel-resident subsystem: 4967 4968Implemented support for host-installed System Control Interrupt (SCI) 4969handlers. Certain ACPI functionality requires the host to handle raw 4970SCIs. For example, the "SCI Doorbell" that is defined for memory power 4971state support requires the host device driver to handle SCIs to examine 4972if the doorbell has been activated. Multiple SCI handlers can be 4973installed to allow for future expansion. New external interfaces are 4974AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for 4975details. Lv Zheng, Bob Moore. ACPICA BZ 1032. 4976 4977Operation region support: Never locally free the handler "context" 4978pointer. This change removes some dangerous code that attempts to free 4979the handler context pointer in some (rare) circumstances. The owner of 4980the handler owns this pointer and the ACPICA code should never touch it. 4981Although not seen to be an issue in any kernel, it did show up as a 4982problem (fault) under AcpiExec. Also, set the internal storage field for 4983the context pointer to zero when the region is deactivated, simply for 4984sanity. David Box. ACPICA BZ 1039. 4985 4986AcpiRead: On error, do not modify the return value target location. If an 4987error happens in the middle of a split 32/32 64-bit I/O operation, do not 4988modify the target of the return value pointer. Makes the code consistent 4989with the rest of ACPICA. Bjorn Helgaas. 4990 4991Example Code and Data Size: These are the sizes for the OS-independent 4992acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4993debug version of the code includes the debug output trace mechanism and 4994has a much larger code and data size. 4995 4996 Current Release: 4997 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 4998 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 4999 Previous Release: 5000 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 5001 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total 5002 5003 50042) iASL Compiler/Disassembler and Tools: 5005 5006AcpiDump: Implemented several new features and fixed some problems: 50071) Added support to dump the RSDP, RSDT, and XSDT tables. 50082) Added support for multiple table instances (SSDT, UEFI). 50093) Added option to dump "customized" (overridden) tables (-c). 50104) Fixed a problem where some table filenames were improperly 5011constructed. 50125) Improved some error messages, removed some unnecessary messages. 5013 5014iASL: Implemented additional support for disassembly of ACPI tables that 5015contain invocations of external control methods. The -fe<file> option 5016allows the import of a file that specifies the external methods along 5017with the required number of arguments for each -- allowing for the 5018correct disassembly of the table. This is a workaround for a limitation 5019of AML code where the disassembler often cannot determine the number of 5020arguments required for an external control method and generates incorrect 5021ASL code. See the iASL reference for details. ACPICA BZ 1030. 5022 5023Debugger: Implemented a new command (paths) that displays the full 5024pathnames (namepaths) and object types of all objects in the namespace. 5025This is an alternative to the namespace command. 5026 5027Debugger: Implemented a new command (sci) that invokes the SCI dispatch 5028mechanism and any installed handlers. 5029 5030iASL: Fixed a possible segfault for "too many parent prefixes" condition. 5031This can occur if there are too many parent prefixes in a namepath (for 5032example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035. 5033 5034Application OSLs: Set the return value for the PCI read functions. These 5035functions simply return AE_OK, but should set the return value to zero 5036also. This change implements this. ACPICA BZ 1038. 5037 5038Debugger: Prevent possible command line buffer overflow. Increase the 5039size of a couple of the debugger line buffers, and ensure that overflow 5040cannot happen. ACPICA BZ 1037. 5041 5042iASL: Changed to abort immediately on serious errors during the parsing 5043phase. Due to the nature of ASL, there is no point in attempting to 5044compile these types of errors, and they typically end up causing a 5045cascade of hundreds of errors which obscure the original problem. 5046 5047---------------------------------------- 504825 July 2013. Summary of changes for version 20130725: 5049 50501) ACPICA kernel-resident subsystem: 5051 5052Fixed a problem with the DerefOf operator where references to FieldUnits 5053and BufferFields incorrectly returned the parent object, not the actual 5054value of the object. After this change, a dereference of a FieldUnit 5055reference results in a read operation on the field to get the value, and 5056likewise, the appropriate BufferField value is extracted from the target 5057buffer. 5058 5059Fixed a problem where the _WAK method could cause a fault under these 5060circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK 5061method returned no value. The problem is rarely seen because most kernels 5062run ACPICA in slack mode. 5063 5064For the DerefOf operator, a fatal error now results if an attempt is made 5065to dereference a reference (created by the Index operator) to a NULL 5066package element. Provides compatibility with other ACPI implementations, 5067and this behavior will be added to a future version of the ACPI 5068specification. 5069 5070The ACPI Power Management Timer (defined in the FADT) is now optional. 5071This provides compatibility with other ACPI implementations and will 5072appear in the next version of the ACPI specification. If there is no PM 5073Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of 5074zero in the FADT indicates no PM timer. 5075 5076Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This 5077allows the host to globally enable/disable all vendor strings, all 5078feature strings, or both. Intended to be primarily used for debugging 5079purposes only. Lv Zheng. 5080 5081Expose the collected _OSI data to the host via a global variable. This 5082data tracks the highest level vendor ID that has been invoked by the BIOS 5083so that the host (and potentially ACPICA itself) can change behaviors 5084based upon the age of the BIOS. 5085 5086Example Code and Data Size: These are the sizes for the OS-independent 5087acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5088debug version of the code includes the debug output trace mechanism and 5089has a much larger code and data size. 5090 5091 Current Release: 5092 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 5093 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 5094 Previous Release: 5095 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 5096 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 5097 5098 50992) iASL Compiler/Disassembler and Tools: 5100 5101iASL: Created the following enhancements for the -so option (create 5102offset table): 51031)Add offsets for the last nameseg in each namepath for every supported 5104object type 51052)Add support for Processor, Device, Thermal Zone, and Scope objects 51063)Add the actual AML opcode for the parent object of every supported 5107object type 51084)Add support for the ZERO/ONE/ONES AML opcodes for integer objects 5109 5110Disassembler: Emit all unresolved external symbols in a single block. 5111These are external references to control methods that could not be 5112resolved, and thus, the disassembler had to make a guess at the number of 5113arguments to parse. 5114 5115iASL: The argument to the -T option (create table template) is now 5116optional. If not specified, the default table is a DSDT, typically the 5117most common case. 5118 5119---------------------------------------- 512026 June 2013. Summary of changes for version 20130626: 5121 51221) ACPICA kernel-resident subsystem: 5123 5124Fixed an issue with runtime repair of the _CST object. Null or invalid 5125elements were not always removed properly. Lv Zheng. 5126 5127Removed an arbitrary restriction of 256 GPEs per GPE block (such as the 5128FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device, 5129the maximum number of GPEs is 1016. Use of multiple GPE block devices 5130makes the system-wide number of GPEs essentially unlimited. 5131 5132Example Code and Data Size: These are the sizes for the OS-independent 5133acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5134debug version of the code includes the debug output trace mechanism and 5135has a much larger code and data size. 5136 5137 Current Release: 5138 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 5139 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 5140 Previous Release: 5141 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 5142 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 5143 5144 51452) iASL Compiler/Disassembler and Tools: 5146 5147Portable AcpiDump: Implemented full support for the Linux and FreeBSD 5148hosts. Now supports Linux, FreeBSD, and Windows. 5149 5150Disassembler: Added some missing types for the HEST and EINJ tables: "Set 5151Error Type With Address", "CMCI", "MCE", and "Flush Cacheline". 5152 5153iASL/Preprocessor: Implemented full support for nested 5154#if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks. 5155 5156Disassembler: Expanded maximum output string length to 64K. Was 256 bytes 5157max. The original purpose of this constraint was to limit the amount of 5158debug output. However, the string function in question (UtPrintString) is 5159now used for the disassembler also, where 256 bytes is insufficient. 5160Reported by RehabMan@GitHub. 5161 5162iASL/DataTables: Fixed some problems and issues with compilation of DMAR 5163tables. ACPICA BZ 999. Lv Zheng. 5164 5165iASL: Fixed a couple of error exit issues that could result in a "Could 5166not delete <file>" message during ASL compilation. 5167 5168AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though 5169the actual signatures for these tables are "FACP" and "APIC", 5170respectively. 5171 5172AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI 5173tables are allowed to have multiple instances. 5174 5175---------------------------------------- 517617 May 2013. Summary of changes for version 20130517: 5177 51781) ACPICA kernel-resident subsystem: 5179 5180Fixed a regression introduced in version 20130328 for _INI methods. This 5181change fixes a problem introduced in 20130328 where _INI methods are no 5182longer executed properly because of a memory block that was not 5183initialized correctly. ACPICA BZ 1016. Tomasz Nowicki 5184<tomasz.nowicki@linaro.org>. 5185 5186Fixed a possible problem with the new extended sleep registers in the 5187ACPI 51885.0 FADT. Do not use these registers (even if populated) unless the HW- 5189reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ 51901020. Lv Zheng. 5191 5192Implemented return value repair code for _CST predefined objects: Sort 5193the 5194list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng. 5195 5196Implemented a debug-only option to disable loading of SSDTs from the 5197RSDT/XSDT during ACPICA initialization. This can be useful for debugging 5198ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in 5199acglobal.h - ACPICA BZ 1005. Lv Zheng. 5200 5201Fixed some issues in the ACPICA initialization and termination code: 5202Tomasz Nowicki <tomasz.nowicki@linaro.org> 52031) Clear events initialized flag upon event component termination. ACPICA 5204BZ 1013. 52052) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018. 52063) Delete global lock pending lock during termination. ACPICA BZ 1012. 52074) Clear debug buffer global on termination to prevent possible multiple 5208delete. ACPICA BZ 1010. 5209 5210Standardized all switch() blocks across the entire source base. After 5211many 5212years, different formatting for switch() had crept in. This change makes 5213the formatting of every switch block identical. ACPICA BZ 997. Chao Guan. 5214 5215Split some files to enhance ACPICA modularity and configurability: 52161) Split buffer dump routines into utilities/utbuffer.c 52172) Split internal error message routines into utilities/uterror.c 52183) Split table print utilities into tables/tbprint.c 52194) Split iASL command-line option processing into asloptions.c 5220 5221Makefile enhancements: 52221) Support for all new files above. 52232) Abort make on errors from any subcomponent. Chao Guan. 52243) Add build support for Apple Mac OS X. Liang Qi. 5225 5226Example Code and Data Size: These are the sizes for the OS-independent 5227acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5228debug version of the code includes the debug output trace mechanism and 5229has a much larger code and data size. 5230 5231 Current Release: 5232 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 5233 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 5234 Previous Release: 5235 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 5236 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 5237 5238 52392) iASL Compiler/Disassembler and Tools: 5240 5241New utility: Implemented an easily portable version of the acpidump 5242utility to extract ACPI tables from the system (or a file) in an ASCII 5243hex 5244dump format. The top-level code implements the various command line 5245options, file I/O, and table dump routines. To port to a new host, only 5246three functions need to be implemented to get tables -- since this 5247functionality is OS-dependent. See the tools/acpidump/apmain.c module and 5248the ACPICA reference for porting instructions. ACPICA BZ 859. Notes: 52491) The Windows version obtains the ACPI tables from the Registry. 52502) The Linux version is under development. 52513) Other hosts - If an OS-dependent module is submitted, it will be 5252distributed with ACPICA. 5253 5254iASL: Fixed a regression for -D preprocessor option (define symbol). A 5255restructuring/change to the initialization sequence caused this option to 5256no longer work properly. 5257 5258iASL: Implemented a mechanism to disable specific warnings and remarks. 5259Adds a new command line option, "-vw <messageid> as well as "#pragma 5260disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore. 5261 5262iASL: Fix for too-strict package object validation. The package object 5263validation for return values from the predefined names is a bit too 5264strict, it does not allow names references within the package (which will 5265be resolved at runtime.) These types of references cannot be validated at 5266compile time. This change ignores named references within package objects 5267for names that return or define static packages. 5268 5269Debugger: Fixed the 80-character command line limitation for the History 5270command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan. 5271 5272iASL: Added control method and package support for the -so option 5273(generates AML offset table for BIOS support.) 5274 5275iASL: issue a remark if a non-serialized method creates named objects. If 5276a thread blocks within the method for any reason, and another thread 5277enters the method, the method will fail because an attempt will be made 5278to 5279create the same (named) object twice. In this case, issue a remark that 5280the method should be marked serialized. NOTE: may become a warning later. 5281ACPICA BZ 909. 5282 5283---------------------------------------- 528418 April 2013. Summary of changes for version 20130418: 5285 52861) ACPICA kernel-resident subsystem: 5287 5288Fixed a possible buffer overrun during some rare but specific field unit 5289read operations. This overrun can only happen if the DSDT version is 1 -- 5290meaning that all AML integers are 32 bits -- and the field length is 5291between 33 and 55 bits long. During the read, an internal buffer object 5292is 5293created for the field unit because the field is larger than an integer 5294(32 5295bits). However, in this case, the buffer will be incorrectly written 5296beyond the end because the buffer length is less than the internal 5297minimum 5298of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes 5299long, but a full 8 bytes will be written. 5300 5301Updated the Embedded Controller "orphan" _REG method support. This refers 5302to _REG methods under the EC device that have no corresponding operation 5303region. This is allowed by the ACPI specification. This update removes a 5304dependency on the existence an ECDT table. It will execute an orphan _REG 5305method as long as the operation region handler for the EC is installed at 5306the EC device node and not the namespace root. Rui Zhang (original 5307update), Bob Moore (update/integrate). 5308 5309Implemented run-time argument typechecking for all predefined ACPI names 5310(_STA, _BIF, etc.) This change performs object typechecking on all 5311incoming arguments for all predefined names executed via 5312AcpiEvaluateObject. This ensures that ACPI-related device drivers are 5313passing correct object types as well as the correct number of arguments 5314(therefore identifying any issues immediately). Also, the ASL/namespace 5315definition of the predefined name is checked against the ACPI 5316specification for the proper argument count. Adds one new file, 5317nsarguments.c 5318 5319Changed an exception code for the ASL UnLoad() operator. Changed the 5320exception code for the case where the input DdbHandle is invalid, from 5321AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE. 5322 5323Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the 5324global makefile. The use of this flag causes compiler errors on earlier 5325versions of GCC, so it has been removed for compatibility. 5326 5327Miscellaneous cleanup: 53281) Removed some unused/obsolete macros 53292) Fixed a possible memory leak in the _OSI support 53303) Removed an unused variable in the predefined name support 53314) Windows OSL: remove obsolete reference to a memory list field 5332 5333Example Code and Data Size: These are the sizes for the OS-independent 5334acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5335debug version of the code includes the debug output trace mechanism and 5336has a much larger code and data size. 5337 5338 Current Release: 5339 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 5340 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 5341 Previous Release: 5342 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 5343 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 5344 5345 53462) iASL Compiler/Disassembler and Tools: 5347 5348AcpiExec: Added installation of a handler for the SystemCMOS address 5349space. This prevents control method abort if a method accesses this 5350space. 5351 5352AcpiExec: Added support for multiple EC devices, and now install EC 5353operation region handler(s) at the actual EC device instead of the 5354namespace root. This reflects the typical behavior of host operating 5355systems. 5356 5357AcpiExec: Updated to ensure that all operation region handlers are 5358installed before the _REG methods are executed. This prevents a _REG 5359method from aborting if it accesses an address space has no handler. 5360AcpiExec installs a handler for every possible address space. 5361 5362Debugger: Enhanced the "handlers" command to display non-root handlers. 5363This change enhances the handlers command to display handlers associated 5364with individual devices throughout the namespace, in addition to the 5365currently supported display of handlers associated with the root 5366namespace 5367node. 5368 5369ASL Test Suite: Several test suite errors have been identified and 5370resolved, reducing the total error count during execution. Chao Guan. 5371 5372---------------------------------------- 537328 March 2013. Summary of changes for version 20130328: 5374 53751) ACPICA kernel-resident subsystem: 5376 5377Fixed several possible race conditions with the internal object reference 5378counting mechanism. Some of the external ACPICA interfaces update object 5379reference counts without holding the interpreter or namespace lock. This 5380change adds a spinlock to protect reference count updates on the internal 5381ACPICA objects. Reported by and with assistance from Andriy Gapon 5382(avg@FreeBSD.org). 5383 5384FADT support: Removed an extraneous warning for very large GPE register 5385sets. This change removes a size mismatch warning if the legacy length 5386field for a GPE register set is larger than the 64-bit GAS structure can 5387accommodate. GPE register sets can be larger than the 255-bit width 5388limitation of the GAS structure. Linn Crosetto (linn@hp.com). 5389 5390_OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error 5391return from this interface. Handles a possible timeout case if 5392ACPI_WAIT_FOREVER is modified by the host to be a value less than 5393"forever". Jung-uk Kim. 5394 5395Predefined name support: Add allowed/required argument type information 5396to 5397the master predefined info table. This change adds the infrastructure to 5398enable typechecking on incoming arguments for all predefined 5399methods/objects. It does not actually contain the code that will fully 5400utilize this information, this is still under development. Also condenses 5401some duplicate code for the predefined names into a new module, 5402utilities/utpredef.c 5403 5404Example Code and Data Size: These are the sizes for the OS-independent 5405acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5406debug version of the code includes the debug output trace mechanism and 5407has a much larger code and data size. 5408 5409 Previous Release: 5410 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 5411 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 5412 Current Release: 5413 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 5414 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 5415 5416 54172) iASL Compiler/Disassembler and Tools: 5418 5419iASL: Implemented a new option to simplify the development of ACPI- 5420related 5421BIOS code. Adds support for a new "offset table" output file. The -so 5422option will create a C table containing the AML table offsets of various 5423named objects in the namespace so that BIOS code can modify them easily 5424at 5425boot time. This can simplify BIOS runtime code by eliminating expensive 5426searches for "magic values", enhancing boot times and adding greater 5427reliability. With assistance from Lee Hamel. 5428 5429iASL: Allow additional predefined names to return zero-length packages. 5430Now, all predefined names that are defined by the ACPI specification to 5431return a "variable-length package of packages" are allowed to return a 5432zero length top-level package. This allows the BIOS to tell the host that 5433the requested feature is not supported, and supports existing BIOS/ASL 5434code and practices. 5435 5436iASL: Changed the "result not used" warning to an error. This is the case 5437where an ASL operator is effectively a NOOP because the result of the 5438operation is not stored anywhere. For example: 5439 Add (4, Local0) 5440There is no target (missing 3rd argument), nor is the function return 5441value used. This is potentially a very serious problem -- since the code 5442was probably intended to do something, but for whatever reason, the value 5443was not stored. Therefore, this issue has been upgraded from a warning to 5444an error. 5445 5446AcpiHelp: Added allowable/required argument types to the predefined names 5447info display. This feature utilizes the recent update to the predefined 5448names table (above). 5449 5450---------------------------------------- 545114 February 2013. Summary of changes for version 20130214: 5452 54531) ACPICA Kernel-resident Subsystem: 5454 5455Fixed a possible regression on some hosts: Reinstated the safe return 5456macros (return_ACPI_STATUS, etc.) that ensure that the argument is 5457evaluated only once. Although these macros are not needed for the ACPICA 5458code itself, they are often used by ACPI-related host device drivers 5459where 5460the safe feature may be necessary. 5461 5462Fixed several issues related to the ACPI 5.0 reduced hardware support 5463(SOC): Now ensure that if the platform declares itself as hardware- 5464reduced 5465via the FADT, the following functions become NOOPs (and always return 5466AE_OK) because ACPI is always enabled by definition on these machines: 5467 AcpiEnable 5468 AcpiDisable 5469 AcpiHwGetMode 5470 AcpiHwSetMode 5471 5472Dynamic Object Repair: Implemented additional runtime repairs for 5473predefined name return values. Both of these repairs can simplify code in 5474the related device drivers that invoke these methods: 54751) For the _STR and _MLS names, automatically repair/convert an ASCII 5476string to a Unicode buffer. 54772) For the _CRS, _PRS, and _DMA names, return a resource descriptor with 5478a 5479lone end tag descriptor in the following cases: A Return(0) was executed, 5480a null buffer was returned, or no object at all was returned (non-slack 5481mode only). Adds a new file, nsconvert.c 5482ACPICA BZ 998. Bob Moore, Lv Zheng. 5483 5484Resource Manager: Added additional code to prevent possible infinite 5485loops 5486while traversing corrupted or ill-formed resource template buffers. Check 5487for zero-length resource descriptors in all code that loops through 5488resource templates (the length field is used to index through the 5489template). This change also hardens the external AcpiWalkResources and 5490AcpiWalkResourceBuffer interfaces. 5491 5492Local Cache Manager: Enhanced the main data structure to eliminate an 5493unnecessary mechanism to access the next object in the list. Actually 5494provides a small performance enhancement for hosts that use the local 5495ACPICA cache manager. Jung-uk Kim. 5496 5497Example Code and Data Size: These are the sizes for the OS-independent 5498acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5499debug version of the code includes the debug output trace mechanism and 5500has a much larger code and data size. 5501 5502 Previous Release: 5503 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 5504 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 5505 Current Release: 5506 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 5507 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 5508 5509 55102) iASL Compiler/Disassembler and Tools: 5511 5512iASL/Disassembler: Fixed several issues with the definition of the ACPI 55135.0 RASF table (RAS Feature Table). This change incorporates late changes 5514that were made to the ACPI 5.0 specification. 5515 5516iASL/Disassembler: Added full support for the following new ACPI tables: 5517 1) The MTMR table (MID Timer Table) 5518 2) The VRTC table (Virtual Real Time Clock Table). 5519Includes header file, disassembler, table compiler, and template support 5520for both tables. 5521 5522iASL: Implemented compile-time validation of package objects returned by 5523predefined names. This new feature validates static package objects 5524returned by the various predefined names defined to return packages. Both 5525object types and package lengths are validated, for both parent packages 5526and sub-packages, if any. The code is similar in structure and behavior 5527to 5528the runtime repair mechanism within the AML interpreter and uses the 5529existing predefined name information table. Adds a new file, aslprepkg.c. 5530ACPICA BZ 938. 5531 5532iASL: Implemented auto-detection of binary ACPI tables for disassembly. 5533This feature detects a binary file with a valid ACPI table header and 5534invokes the disassembler automatically. Eliminates the need to 5535specifically invoke the disassembler with the -d option. ACPICA BZ 862. 5536 5537iASL/Disassembler: Added several warnings for the case where there are 5538unresolved control methods during the disassembly. This can potentially 5539cause errors when the output file is compiled, because the disassembler 5540assumes zero method arguments in these cases (it cannot determine the 5541actual number of arguments without resolution/definition of the method). 5542 5543Debugger: Added support to display all resources with a single command. 5544Invocation of the resources command with no arguments will now display 5545all 5546resources within the current namespace. 5547 5548AcpiHelp: Added descriptive text for each ACPICA exception code displayed 5549via the -e option. 5550 5551---------------------------------------- 555217 January 2013. Summary of changes for version 20130117: 5553 55541) ACPICA Kernel-resident Subsystem: 5555 5556Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to 5557return either 1 or 2 integers. Although the ACPI spec defines the \_Sx 5558objects to return a package containing one integer, most BIOS code 5559returns 5560two integers and the previous code reflects that. However, we also need 5561to 5562support BIOS code that actually implements to the ACPI spec, and this 5563change reflects this. 5564 5565Fixed two issues with the ACPI_DEBUG_PRINT macros: 55661) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for 5567C compilers that require this support. 55682) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since 5569ACPI_DEBUG is already used by many of the various hosts. 5570 5571Updated all ACPICA copyrights and signons to 2013. Added the 2013 5572copyright to all module headers and signons, including the standard Linux 5573header. This affects virtually every file in the ACPICA core subsystem, 5574iASL compiler, all ACPICA utilities, and the test suites. 5575 5576Example Code and Data Size: These are the sizes for the OS-independent 5577acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5578debug version of the code includes the debug output trace mechanism and 5579has a much larger code and data size. 5580 5581 Previous Release: 5582 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 5583 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 5584 Current Release: 5585 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 5586 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 5587 5588 55892) iASL Compiler/Disassembler and Tools: 5590 5591Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and 5592prevent a possible fault on some hosts. Some C libraries modify the arg 5593pointer parameter to vfprintf making it difficult to call it twice in the 5594AcpiOsVprintf function. Use a local buffer to workaround this issue. This 5595does not affect the Windows OSL since the Win C library does not modify 5596the arg pointer. Chao Guan, Bob Moore. 5597 5598iASL: Fixed a possible infinite loop when the maximum error count is 5599reached. If an output file other than the .AML file is specified (such as 5600a listing file), and the maximum number of errors is reached, do not 5601attempt to flush data to the output file(s) as the compiler is aborting. 5602This can cause an infinite loop as the max error count code essentially 5603keeps calling itself. 5604 5605iASL/Disassembler: Added an option (-in) to ignore NOOP 5606opcodes/operators. 5607Implemented for both the compiler and the disassembler. Often, the NOOP 5608opcode is used as padding for packages that are changed dynamically by 5609the 5610BIOS. When disassembled and recompiled, these NOOPs will cause syntax 5611errors. This option causes the disassembler to ignore all NOOP opcodes 5612(0xA3), and it also causes the compiler to ignore all ASL source code 5613NOOP 5614statements as well. 5615 5616Debugger: Enhanced the Sleep command to execute all sleep states. This 5617change allows Sleep to be invoked with no arguments and causes the 5618debugger to execute all of the sleep states, 0-5, automatically. 5619 5620---------------------------------------- 562120 December 2012. Summary of changes for version 20121220: 5622 56231) ACPICA Kernel-resident Subsystem: 5624 5625Implemented a new interface, AcpiWalkResourceBuffer. This interface is an 5626alternate entry point for AcpiWalkResources and improves the usability of 5627the resource manager by accepting as input a buffer containing the output 5628of either a _CRS, _PRS, or _AEI method. The key functionality is that the 5629input buffer is not deleted by this interface so that it can be used by 5630the host later. See the ACPICA reference for details. 5631 5632Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table 5633(DSDT version < 2). The constant will be truncated and this warning 5634reflects that behavior. 5635 5636Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ, 5637ExtendedInterrupt, and GpioInt descriptors. This change adds support to 5638both get and set the new wake bit in these descriptors, separately from 5639the existing share bit. Reported by Aaron Lu. 5640 5641Interpreter: Fix Store() when an implicit conversion is not possible. For 5642example, in the cases such as a store of a string to an existing package 5643object, implement the store as a CopyObject(). This is a small departure 5644from the ACPI specification which states that the control method should 5645be 5646aborted in this case. However, the ASLTS suite depends on this behavior. 5647 5648Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT 5649macros: check if debug output is currently enabled as soon as possible to 5650minimize performance impact if debug is in fact not enabled. 5651 5652Source code restructuring: Cleanup to improve modularity. The following 5653new files have been added: dbconvert.c, evhandler.c, nsprepkg.c, 5654psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c. 5655Associated makefiles and project files have been updated. 5656 5657Changed an exception code for LoadTable operator. For the case where one 5658of the input strings is too long, change the returned exception code from 5659AE_BAD_PARAMETER to AE_AML_STRING_LIMIT. 5660 5661Fixed a possible memory leak in dispatcher error path. On error, delete 5662the mutex object created during method mutex creation. Reported by 5663tim.gardner@canonical.com. 5664 5665Example Code and Data Size: These are the sizes for the OS-independent 5666acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5667debug version of the code includes the debug output trace mechanism and 5668has a much larger code and data size. 5669 5670 Previous Release: 5671 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 5672 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 5673 Current Release: 5674 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 5675 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 5676 5677 56782) iASL Compiler/Disassembler and Tools: 5679 5680iASL: Disallow a method call as argument to the ObjectType ASL operator. 5681This change tracks an errata to the ACPI 5.0 document. The AML grammar 5682will not allow the interpreter to differentiate between a method and a 5683method invocation when these are used as an argument to the ObjectType 5684operator. The ACPI specification change is to disallow a method 5685invocation 5686(UserTerm) for the ObjectType operator. 5687 5688Finish support for the TPM2 and CSRT tables in the headers, table 5689compiler, and disassembler. 5690 5691Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout 5692always expires immediately if the semaphore is not available. The 5693original 5694code was using a relative-time timeout, but sem_timedwait requires the 5695use 5696of an absolute time. 5697 5698iASL: Added a remark if the Timer() operator is used within a 32-bit 5699table. This operator returns a 64-bit time value that will be truncated 5700within a 32-bit table. 5701 5702iASL Source code restructuring: Cleanup to improve modularity. The 5703following new files have been added: aslhex.c, aslxref.c, aslnamesp.c, 5704aslmethod.c, and aslfileio.c. Associated makefiles and project files have 5705been updated. 5706 5707 5708---------------------------------------- 570914 November 2012. Summary of changes for version 20121114: 5710 57111) ACPICA Kernel-resident Subsystem: 5712 5713Implemented a performance enhancement for ACPI/AML Package objects. This 5714change greatly increases the performance of Package objects within the 5715interpreter. It changes the processing of reference counts for packages 5716by 5717optimizing for the most common case where the package sub-objects are 5718either Integers, Strings, or Buffers. Increases the overall performance 5719of 5720the ASLTS test suite by 1.5X (Increases the Slack Mode performance by 57212X.) 5722Chao Guan. ACPICA BZ 943. 5723 5724Implemented and deployed common macros to extract flag bits from resource 5725descriptors. Improves readability and maintainability of the code. Fixes 5726a 5727problem with the UART serial bus descriptor for the number of data bits 5728flags (was incorrectly 2 bits, should be 3). 5729 5730Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation 5731of the macros and changed the SETx macros to the style of (destination, 5732source). Also added ACPI_CASTx companion macros. Lv Zheng. 5733 5734Example Code and Data Size: These are the sizes for the OS-independent 5735acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5736debug version of the code includes the debug output trace mechanism and 5737has a much larger code and data size. 5738 5739 Previous Release: 5740 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 5741 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 5742 Current Release: 5743 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 5744 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 5745 5746 57472) iASL Compiler/Disassembler and Tools: 5748 5749Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change 5750adds the ShareAndWake and ExclusiveAndWake flags which were added to the 5751Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986. 5752 5753Disassembler: Fixed a problem with external declaration generation. Fixes 5754a problem where an incorrect pathname could be generated for an external 5755declaration if the original reference to the object includes leading 5756carats (^). ACPICA BZ 984. 5757 5758Debugger: Completed a major update for the Disassemble<method> command. 5759This command was out-of-date and did not properly disassemble control 5760methods that had any reasonable complexity. This fix brings the command 5761up 5762to the same level as the rest of the disassembler. Adds one new file, 5763dmdeferred.c, which is existing code that is now common with the main 5764disassembler and the debugger disassemble command. ACPICA MZ 978. 5765 5766iASL: Moved the parser entry prototype to avoid a duplicate declaration. 5767Newer versions of Bison emit this prototype, so moved the prototype out 5768of 5769the iASL header to where it is actually used in order to avoid a 5770duplicate 5771declaration. 5772 5773iASL/Tools: Standardized use of the stream I/O functions: 5774 1) Ensure check for I/O error after every fopen/fread/fwrite 5775 2) Ensure proper order of size/count arguments for fread/fwrite 5776 3) Use test of (Actual != Requested) after all fwrite, and most fread 5777 4) Standardize I/O error messages 5778Improves reliability and maintainability of the code. Bob Moore, Lv 5779Zheng. 5780ACPICA BZ 981. 5781 5782Disassembler: Prevent duplicate External() statements. During generation 5783of external statements, detect similar pathnames that are actually 5784duplicates such as these: 5785 External (\ABCD) 5786 External (ABCD) 5787Remove all leading '\' characters from pathnames during the external 5788statement generation so that duplicates will be detected and tossed. 5789ACPICA BZ 985. 5790 5791Tools: Replace low-level I/O with stream I/O functions. Replace 5792open/read/write/close with the stream I/O equivalents 5793fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob 5794Moore. 5795 5796AcpiBin: Fix for the dump-to-hex function. Now correctly output the table 5797name header so that AcpiXtract recognizes the output file/table. 5798 5799iASL: Remove obsolete -2 option flag. Originally intended to force the 5800compiler/disassembler into an ACPI 2.0 mode, this was never implemented 5801and the entire concept is now obsolete. 5802 5803---------------------------------------- 580418 October 2012. Summary of changes for version 20121018: 5805 5806 58071) ACPICA Kernel-resident Subsystem: 5808 5809Updated support for the ACPI 5.0 MPST table. Fixes some problems 5810introduced by late changes to the table as it was added to the ACPI 5.0 5811specification. Includes header, disassembler, and data table compiler 5812support as well as a new version of the MPST template. 5813 5814AcpiGetObjectInfo: Enhanced the device object support to include the ACPI 58155.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID 5816methods: _HID, _CID, and _UID. 5817 5818Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed 5819ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent 5820name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId) 5821names for their various drivers. Affects the AcpiGetObjectInfo external 5822interface, and other internal interfaces as well. 5823 5824Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME. 5825This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME 5826on machines that support non-aligned transfers. Optimizes for this case 5827rather than using a strncpy. With assistance from Zheng Lv. 5828 5829Resource Manager: Small fix for buffer size calculation. Fixed a one byte 5830error in the output buffer calculation. Feng Tang. ACPICA BZ 849. 5831 5832Added a new debug print message for AML mutex objects that are force- 5833released. At control method termination, any currently acquired mutex 5834objects are force-released. Adds a new debug-only message for each one 5835that is released. 5836 5837Audited/updated all ACPICA return macros and the function debug depth 5838counter: 1) Ensure that all functions that use the various TRACE macros 5839also use the appropriate ACPICA return macros. 2) Ensure that all normal 5840return statements surround the return expression (value) with parens to 5841ensure consistency across the ACPICA code base. Guan Chao, Tang Feng, 5842Zheng Lv, Bob Moore. ACPICA Bugzilla 972. 5843 5844Global source code changes/maintenance: All extra lines at the start and 5845end of each source file have been removed for consistency. Also, within 5846comments, all new sentences start with a single space instead of a double 5847space, again for consistency across the code base. 5848 5849Example Code and Data Size: These are the sizes for the OS-independent 5850acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5851debug version of the code includes the debug output trace mechanism and 5852has a much larger code and data size. 5853 5854 Previous Release: 5855 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 5856 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 5857 Current Release: 5858 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 5859 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 5860 5861 58622) iASL Compiler/Disassembler and Tools: 5863 5864AcpiExec: Improved the algorithm used for memory leak/corruption 5865detection. Added some intelligence to the code that maintains the global 5866list of allocated memory. The list is now ordered by allocated memory 5867address, significantly improving performance. When running AcpiExec on 5868the ASLTS test suite, speed improvements of 3X to 5X are seen, depending 5869on the platform and/or the environment. Note, this performance 5870enhancement affects the AcpiExec utility only, not the kernel-resident 5871ACPICA code. 5872 5873Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For 5874the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix 5875incorrect table offset reported for invalid opcodes. Report the original 587632-bit value for bad ACPI_NAMEs (as well as the repaired name.) 5877 5878Disassembler: Enhanced the -vt option to emit the binary table data in 5879hex format to assist with debugging. 5880 5881Fixed a potential filename buffer overflow in osunixdir.c. Increased the 5882size of file structure. Colin Ian King. 5883 5884---------------------------------------- 588513 September 2012. Summary of changes for version 20120913: 5886 5887 58881) ACPICA Kernel-resident Subsystem: 5889 5890ACPI 5.0: Added two new notify types for the Hardware Error Notification 5891Structure within the Hardware Error Source Table (HEST) table -- CMCI(5) 5892and 5893MCE(6). 5894 5895Table Manager: Merged/removed duplicate code in the root table resize 5896functions. One function is external, the other is internal. Lv Zheng, 5897ACPICA 5898BZ 846. 5899 5900Makefiles: Completely removed the obsolete "Linux" makefiles under 5901acpica/generate/linux. These makefiles are obsolete and have been 5902replaced 5903by 5904the generic unix makefiles under acpica/generate/unix. 5905 5906Makefiles: Ensure that binary files always copied properly. Minor rule 5907change 5908to ensure that the final binary output files are always copied up to the 5909appropriate binary directory (bin32 or bin64.) 5910 5911Example Code and Data Size: These are the sizes for the OS-independent 5912acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5913debug 5914version of the code includes the debug output trace mechanism and has a 5915much 5916larger code and data size. 5917 5918 Previous Release: 5919 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 5920 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 5921 Current Release: 5922 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 5923 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 5924 5925 59262) iASL Compiler/Disassembler and Tools: 5927 5928Disassembler: Fixed a possible fault during the disassembly of resource 5929descriptors when a second parse is required because of the invocation of 5930external control methods within the table. With assistance from 5931adq@lidskialf.net. ACPICA BZ 976. 5932 5933iASL: Fixed a namepath optimization problem. An error can occur if the 5934parse 5935node that contains the namepath to be optimized does not have a parent 5936node 5937that is a named object. This change fixes the problem. 5938 5939iASL: Fixed a regression where the AML file is not deleted on errors. The 5940AML 5941output file should be deleted if there are any errors during the 5942compiler. 5943The 5944only exception is if the -f (force output) option is used. ACPICA BZ 974. 5945 5946iASL: Added a feature to automatically increase internal line buffer 5947sizes. 5948Via realloc(), automatically increase the internal line buffer sizes as 5949necessary to support very long source code lines. The current version of 5950the 5951preprocessor requires a buffer long enough to contain full source code 5952lines. 5953This change increases the line buffer(s) if the input lines go beyond the 5954current buffer size. This eliminates errors that occurred when a source 5955code 5956line was longer than the buffer. 5957 5958iASL: Fixed a problem with constant folding in method declarations. The 5959SyncLevel term is a ByteConstExpr, and incorrect code would be generated 5960if a 5961Type3 opcode was used. 5962 5963Debugger: Improved command help support. For incorrect argument count, 5964display 5965full help for the command. For help command itself, allow an argument to 5966specify a command. 5967 5968Test Suites: Several bug fixes for the ASLTS suite reduces the number of 5969errors during execution of the suite. Guan Chao. 5970 5971---------------------------------------- 597216 August 2012. Summary of changes for version 20120816: 5973 5974 59751) ACPICA Kernel-resident Subsystem: 5976 5977Removed all use of the deprecated _GTS and _BFS predefined methods. The 5978_GTS 5979(Going To Sleep) and _BFS (Back From Sleep) methods are essentially 5980deprecated and will probably be removed from the ACPI specification. 5981Windows 5982does not invoke them, and reportedly never will. The final nail in the 5983coffin 5984is that the ACPI specification states that these methods must be run with 5985interrupts off, which is not going to happen in a kernel interpreter. 5986Note: 5987Linux has removed all use of the methods also. It was discovered that 5988invoking these functions caused failures on some machines, probably 5989because 5990they were never tested since Windows does not call them. Affects two 5991external 5992interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng. 5993ACPICA BZ 969. 5994 5995Implemented support for complex bit-packed buffers returned from the _PLD 5996(Physical Location of Device) predefined method. Adds a new external 5997interface, AcpiDecodePldBuffer that parses the buffer into a more usable 5998C 5999structure. Note: C Bitfields cannot be used for this type of predefined 6000structure since the memory layout of individual bitfields is not defined 6001by 6002the C language. In addition, there are endian concerns where a compiler 6003will 6004change the bitfield ordering based on the machine type. The new ACPICA 6005interface eliminates these issues, and should be called after _PLD is 6006executed. ACPICA BZ 954. 6007 6008Implemented a change to allow a scope change to root (via "Scope (\)") 6009during 6010execution of module-level ASL code (code that is executed at table load 6011time.) Lin Ming. 6012 6013Added the Windows8/Server2012 string for the _OSI method. This change 6014adds 6015a 6016new _OSI string, "Windows 2012" for both Windows 8 and Windows Server 60172012. 6018 6019Added header support for the new ACPI tables DBG2 (Debug Port Table Type 60202) 6021and CSRT (Core System Resource Table). 6022 6023Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined 6024names. This simplifies access to the buffers returned by these predefined 6025names. Adds a new file, include/acbuffer.h. ACPICA BZ 956. 6026 6027GPE support: Removed an extraneous parameter from the various low-level 6028internal GPE functions. Tang Feng. 6029 6030Removed the linux makefiles from the unix packages. The generate/linux 6031makefiles are obsolete and have been removed from the unix tarball 6032release 6033packages. The replacement makefiles are under generate/unix, and there is 6034a 6035top-level makefile under the main acpica directory. ACPICA BZ 967, 912. 6036 6037Updates for Unix makefiles: 60381) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven. 60392) Update linker flags (move to end of command line) for AcpiExec 6040utility. 6041Guan Chao. 6042 6043Split ACPICA initialization functions to new file, utxfinit.c. Split from 6044utxface.c to improve modularity and reduce file size. 6045 6046Example Code and Data Size: These are the sizes for the OS-independent 6047acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6048debug version of the code includes the debug output trace mechanism and 6049has a 6050much larger code and data size. 6051 6052 Previous Release: 6053 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 6054 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 6055 Current Release: 6056 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 6057 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 6058 6059 60602) iASL Compiler/Disassembler and Tools: 6061 6062iASL: Fixed a problem with constant folding for fixed-length constant 6063expressions. The constant-folding code was not being invoked for constant 6064expressions that allow the use of type 3/4/5 opcodes to generate 6065constants 6066for expressions such as ByteConstExpr, WordConstExpr, etc. This could 6067result 6068in the generation of invalid AML bytecode. ACPICA BZ 970. 6069 6070iASL: Fixed a generation issue on newer versions of Bison. Newer versions 6071apparently automatically emit some of the necessary externals. This 6072change 6073handles these versions in order to eliminate generation warnings. 6074 6075Disassembler: Added support to decode the DBG2 and CSRT ACPI tables. 6076 6077Disassembler: Add support to decode _PLD buffers. The decoded buffer 6078appears 6079within comments in the output file. 6080 6081Debugger: Fixed a regression with the "Threads" command where 6082AE_BAD_PARAMETER was always returned. 6083 6084---------------------------------------- 608511 July 2012. Summary of changes for version 20120711: 6086 60871) ACPICA Kernel-resident Subsystem: 6088 6089Fixed a possible fault in the return package object repair code. Fixes a 6090problem that can occur when a lone package object is wrapped with an 6091outer 6092package object in order to force conformance to the ACPI specification. 6093Can 6094affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, 6095_DLM, 6096_CSD, _PSD, _TSD. 6097 6098Removed code to disable/enable bus master arbitration (ARB_DIS bit in the 6099PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the 6100ARB_DIS bit must be implemented in the host-dependent C3 processor power 6101state 6102support. Note, ARB_DIS is obsolete and only applies to older chipsets, 6103both 6104Intel and other vendors. (for Intel: ICH4-M and earlier) 6105 6106This change removes the code to disable/enable bus master arbitration 6107during 6108suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register 6109causes 6110resume problems on some machines. The change has been in use for over 6111seven 6112years within Linux. 6113 6114Implemented two new external interfaces to support host-directed dynamic 6115ACPI 6116table load and unload. They are intended to simplify the host 6117implementation 6118of hot-plug support: 6119 AcpiLoadTable: Load an SSDT from a buffer into the namespace. 6120 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the 6121table. 6122See the ACPICA reference for additional details. Adds one new file, 6123components/tables/tbxfload.c 6124 6125Implemented and deployed two new interfaces for errors and warnings that 6126are 6127known to be caused by BIOS/firmware issues: 6128 AcpiBiosError: Prints "ACPI Firmware Error" message. 6129 AcpiBiosWarning: Prints "ACPI Firmware Warning" message. 6130Deployed these new interfaces in the ACPICA Table Manager code for ACPI 6131table 6132and FADT errors. Additional deployment to be completed as appropriate in 6133the 6134future. The associated conditional macros are ACPI_BIOS_ERROR and 6135ACPI_BIOS_WARNING. See the ACPICA reference for additional details. 6136ACPICA 6137BZ 6138843. 6139 6140Implicit notify support: ensure that no memory allocation occurs within a 6141critical region. This fix moves a memory allocation outside of the time 6142that a 6143spinlock is held. Fixes issues on systems that do not allow this 6144behavior. 6145Jung-uk Kim. 6146 6147Split exception code utilities and tables into a new file, 6148utilities/utexcep.c 6149 6150Example Code and Data Size: These are the sizes for the OS-independent 6151acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6152debug 6153version of the code includes the debug output trace mechanism and has a 6154much 6155larger code and data size. 6156 6157 Previous Release: 6158 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 6159 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 6160 Current Release: 6161 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 6162 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 6163 6164 61652) iASL Compiler/Disassembler and Tools: 6166 6167iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead 6168of 61690. Jung-uk Kim. 6170 6171Debugger: Enhanced the "tables" command to emit additional information 6172about 6173the current set of ACPI tables, including the owner ID and flags decode. 6174 6175Debugger: Reimplemented the "unload" command to use the new 6176AcpiUnloadParentTable external interface. This command was disable 6177previously 6178due to need for an unload interface. 6179 6180AcpiHelp: Added a new option to decode ACPICA exception codes. The -e 6181option 6182will decode 16-bit hex status codes (ACPI_STATUS) to name strings. 6183 6184---------------------------------------- 618520 June 2012. Summary of changes for version 20120620: 6186 6187 61881) ACPICA Kernel-resident Subsystem: 6189 6190Implemented support to expand the "implicit notify" feature to allow 6191multiple 6192devices to be notified by a single GPE. This feature automatically 6193generates a 6194runtime device notification in the absence of a BIOS-provided GPE control 6195method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit 6196notify is 6197provided by ACPICA for Windows compatibility, and is a workaround for 6198BIOS 6199AML 6200code errors. See the description of the AcpiSetupGpeForWake interface in 6201the 6202APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 6203 6204Changed some comments and internal function names to simplify and ensure 6205correctness of the Linux code translation. No functional changes. 6206 6207Example Code and Data Size: These are the sizes for the OS-independent 6208acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6209debug 6210version of the code includes the debug output trace mechanism and has a 6211much 6212larger code and data size. 6213 6214 Previous Release: 6215 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 6216 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 6217 Current Release: 6218 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 6219 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 6220 6221 62222) iASL Compiler/Disassembler and Tools: 6223 6224Disassembler: Added support to emit short, commented descriptions for the 6225ACPI 6226predefined names in order to improve the readability of the disassembled 6227output. ACPICA BZ 959. Changes include: 6228 1) Emit descriptions for all standard predefined names (_INI, _STA, 6229_PRW, 6230etc.) 6231 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 6232 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, 6233etc.) 6234 6235AcpiSrc: Fixed several long-standing Linux code translation issues. 6236Argument 6237descriptions in function headers are now translated properly to lower 6238case 6239and 6240underscores. ACPICA BZ 961. Also fixes translation problems such as 6241these: 6242(old -> new) 6243 i_aSL -> iASL 6244 00-7_f -> 00-7F 6245 16_k -> 16K 6246 local_fADT -> local_FADT 6247 execute_oSI -> execute_OSI 6248 6249iASL: Fixed a problem where null bytes were inadvertently emitted into 6250some 6251listing files. 6252 6253iASL: Added the existing debug options to the standard help screen. There 6254are 6255no longer two different help screens. ACPICA BZ 957. 6256 6257AcpiHelp: Fixed some typos in the various predefined name descriptions. 6258Also 6259expand some of the descriptions where appropriate. 6260 6261iASL: Fixed the -ot option (display compile times/statistics). Was not 6262working 6263properly for standard output; only worked for the debug file case. 6264 6265---------------------------------------- 626618 May 2012. Summary of changes for version 20120518: 6267 6268 62691) ACPICA Core Subsystem: 6270 6271Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is 6272defined 6273to block until asynchronous events such as notifies and GPEs have 6274completed. 6275Within ACPICA, it is only called before a notify or GPE handler is 6276removed/uninstalled. It also may be useful for the host OS within related 6277drivers such as the Embedded Controller driver. See the ACPICA reference 6278for 6279additional information. ACPICA BZ 868. 6280 6281ACPI Tables: Added a new error message for a possible overflow failure 6282during 6283the conversion of FADT 32-bit legacy register addresses to internal 6284common 628564- 6286bit GAS structure representation. The GAS has a one-byte "bit length" 6287field, 6288thus limiting the register length to 255 bits. ACPICA BZ 953. 6289 6290Example Code and Data Size: These are the sizes for the OS-independent 6291acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6292debug 6293version of the code includes the debug output trace mechanism and has a 6294much 6295larger code and data size. 6296 6297 Previous Release: 6298 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 6299 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 6300 Current Release: 6301 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 6302 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 6303 6304 63052) iASL Compiler/Disassembler and Tools: 6306 6307iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL 6308macro. 6309This keyword was added late in the ACPI 5.0 release cycle and was not 6310implemented until now. 6311 6312Disassembler: Added support for Operation Region externals. Adds missing 6313support for operation regions that are defined in another table, and 6314referenced locally via a Field or BankField ASL operator. Now generates 6315the 6316correct External statement. 6317 6318Disassembler: Several additional fixes for the External() statement 6319generation 6320related to some ASL operators. Also, order the External() statements 6321alphabetically in the disassembler output. Fixes the External() 6322generation 6323for 6324the Create* field, Alias, and Scope operators: 6325 1) Create* buffer field operators - fix type mismatch warning on 6326disassembly 6327 2) Alias - implement missing External support 6328 3) Scope - fix to make sure all necessary externals are emitted. 6329 6330iASL: Improved pathname support. For include files, merge the prefix 6331pathname 6332with the file pathname and eliminate unnecessary components. Convert 6333backslashes in all pathnames to forward slashes, for readability. Include 6334file 6335pathname changes affect both #include and Include() type operators. 6336 6337iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the 6338end 6339of a valid line by inserting a newline and then returning the EOF during 6340the 6341next call to GetNextLine. Prevents the line from being ignored due to EOF 6342condition. 6343 6344iASL: Implemented some changes to enhance the IDE support (-vi option.) 6345Error 6346and Warning messages are now correctly recognized for both the source 6347code 6348browser and the global error and warning counts. 6349 6350---------------------------------------- 635120 April 2012. Summary of changes for version 20120420: 6352 6353 63541) ACPICA Core Subsystem: 6355 6356Implemented support for multiple notify handlers. This change adds 6357support 6358to 6359allow multiple system and device notify handlers on Device, Thermal Zone, 6360and 6361Processor objects. This can simplify the host OS notification 6362implementation. 6363Also re-worked and restructured the entire notify support code to 6364simplify 6365handler installation, handler removal, notify event queuing, and notify 6366dispatch to handler(s). Note: there can still only be two global notify 6367handlers - one for system notifies and one for device notifies. There are 6368no 6369changes to the existing handler install/remove interfaces. Lin Ming, Bob 6370Moore, Rafael Wysocki. 6371 6372Fixed a regression in the package repair code where the object reference 6373count was calculated incorrectly. Regression was introduced in the commit 6374"Support to add Package wrappers". 6375 6376Fixed a couple possible memory leaks in the AML parser, in the error 6377recovery 6378path. Jesper Juhl, Lin Ming. 6379 6380Example Code and Data Size: These are the sizes for the OS-independent 6381acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6382debug version of the code includes the debug output trace mechanism and 6383has a 6384much larger code and data size. 6385 6386 Previous Release: 6387 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 6388 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 6389 Current Release: 6390 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 6391 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 6392 6393 63942) iASL Compiler/Disassembler and Tools: 6395 6396iASL: Fixed a problem with the resource descriptor support where the 6397length 6398of the StartDependentFn and StartDependentFnNoPrio descriptors were not 6399included in cumulative descriptor offset, resulting in incorrect values 6400for 6401resource tags within resource descriptors appearing after a 6402StartDependent* 6403descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 6404 6405iASL and Preprocessor: Implemented full support for the #line directive 6406to 6407correctly track original source file line numbers through the .i 6408preprocessor 6409output file - for error and warning messages. 6410 6411iASL: Expand the allowable byte constants for address space IDs. 6412Previously, 6413the allowable range was 0x80-0xFF (user-defined spaces), now the range is 64140x0A-0xFF to allow for custom and new IDs without changing the compiler. 6415 6416iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 6417 6418iASL: Add option to completely disable the preprocessor (-Pn). 6419 6420iASL: Now emit all error/warning messages to standard error (stderr) by 6421default (instead of the previous stdout). 6422 6423ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). 6424Update 6425for resource descriptor offset fix above. Update/cleanup error output 6426routines. Enable and send iASL errors/warnings to an error logfile 6427(error.txt). Send all other iASL output to a logfile (compiler.txt). 6428Fixed 6429several extraneous "unrecognized operator" messages. 6430 6431---------------------------------------- 643220 March 2012. Summary of changes for version 20120320: 6433 6434 64351) ACPICA Core Subsystem: 6436 6437Enhanced the sleep/wake interfaces to optionally execute the _GTS method 6438(Going To Sleep) and the _BFS method (Back From Sleep). Windows 6439apparently 6440does not execute these methods, and therefore these methods are often 6441untested. It has been seen on some systems where the execution of these 6442methods causes errors and also prevents the machine from entering S5. It 6443is 6444therefore suggested that host operating systems do not execute these 6445methods 6446by default. In the future, perhaps these methods can be optionally 6447executed 6448based on the age of the system and/or what is the newest version of 6449Windows 6450that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState 6451and 6452AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 6453Ming. 6454 6455Fixed a problem where the length of the local/common FADT was set too 6456early. 6457The local FADT table length cannot be set to the common length until the 6458original length has been examined. There is code that checks the table 6459length 6460and sets various fields appropriately. This can affect older machines 6461with 6462early FADT versions. For example, this can cause inadvertent writes to 6463the 6464CST_CNT register. Julian Anastasov. 6465 6466Fixed a mapping issue related to a physical table override. Use the 6467deferred 6468mapping mechanism for tables loaded via the physical override OSL 6469interface. 6470This allows for early mapping before the virtual memory manager is 6471available. 6472Thomas Renninger, Bob Moore. 6473 6474Enhanced the automatic return-object repair code: Repair a common problem 6475with 6476predefined methods that are defined to return a variable-length Package 6477of 6478sub-objects. If there is only one sub-object, some BIOS ASL code 6479mistakenly 6480simply returns the single object instead of a Package with one sub- 6481object. 6482This new support will repair this error by wrapping a Package object 6483around 6484the original object, creating the correct and expected Package with one 6485sub- 6486object. Names that can be repaired in this manner include: _ALR, _CSD, 6487_HPX, 6488_MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 6489939. 6490 6491Changed the exception code returned for invalid ACPI paths passed as 6492parameters to external interfaces such as AcpiEvaluateObject. Was 6493AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 6494 6495Example Code and Data Size: These are the sizes for the OS-independent 6496acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6497debug 6498version of the code includes the debug output trace mechanism and has a 6499much 6500larger code and data size. 6501 6502 Previous Release: 6503 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 6504 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 6505 Current Release: 6506 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 6507 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 6508 6509 65102) iASL Compiler/Disassembler and Tools: 6511 6512iASL: Added the infrastructure and initial implementation of a integrated 6513C- 6514like preprocessor. This will simplify BIOS development process by 6515eliminating 6516the need for a separate preprocessing step during builds. On Windows, it 6517also 6518eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 6519features including full #define() macro support are still under 6520development. 6521These preprocessor directives are supported: 6522 #define 6523 #elif 6524 #else 6525 #endif 6526 #error 6527 #if 6528 #ifdef 6529 #ifndef 6530 #include 6531 #pragma message 6532 #undef 6533 #warning 6534In addition, these new command line options are supported: 6535 -D <symbol> Define symbol for preprocessor use 6536 -li Create preprocessed output file (*.i) 6537 -P Preprocess only and create preprocessor output file (*.i) 6538 6539Table Compiler: Fixed a problem where the equals operator within an 6540expression 6541did not work properly. 6542 6543Updated iASL to use the current versions of Bison/Flex. Updated the 6544Windows 6545project file to invoke these tools from the standard location. ACPICA BZ 6546904. 6547Versions supported: 6548 Flex for Windows: V2.5.4 6549 Bison for Windows: V2.4.1 6550 6551---------------------------------------- 655215 February 2012. Summary of changes for version 20120215: 6553 6554 65551) ACPICA Core Subsystem: 6556 6557There have been some major changes to the sleep/wake support code, as 6558described below (a - e). 6559 6560a) The AcpiLeaveSleepState has been split into two interfaces, similar to 6561AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 6562AcpiLeaveSleepStatePrep. This allows the host to perform actions between 6563the 6564time the _BFS method is called and the _WAK method is called. NOTE: all 6565hosts 6566must update their wake/resume code or else sleep/wake will not work 6567properly. 6568Rafael Wysocki. 6569 6570b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the 6571_WAK 6572method. Some machines require that the GPEs are enabled before the _WAK 6573method 6574is executed. Thomas Renninger. 6575 6576c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) 6577bit. 6578Some BIOS code assumes that WAK_STS will be cleared on resume and use it 6579to 6580determine whether the system is rebooting or resuming. Matthew Garrett. 6581 6582d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From 6583Sleep) to 6584match the ACPI specification requirement. Rafael Wysocki. 6585 6586e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 6587registers within the V5 FADT. This support adds two new files: 6588hardware/hwesleep.c implements the support for the new registers. Moved 6589all 6590sleep/wake external interfaces to hardware/hwxfsleep.c. 6591 6592 6593Added a new OSL interface for ACPI table overrides, 6594AcpiOsPhysicalTableOverride. This interface allows the host to override a 6595table via a physical address, instead of the logical address required by 6596AcpiOsTableOverride. This simplifies the host implementation. Initial 6597implementation by Thomas Renninger. The ACPICA implementation creates a 6598single 6599shared function for table overrides that attempts both a logical and a 6600physical override. 6601 6602Expanded the OSL memory read/write interfaces to 64-bit data 6603(AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 6604transfer support for GAS register structures passed to AcpiRead and 6605AcpiWrite. 6606 6607Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a 6608custom 6609build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) 6610model. 6611See the ACPICA reference for details. ACPICA BZ 942. This option removes 6612about 661310% of the code and 5% of the static data, and the following hardware 6614ACPI 6615features become unavailable: 6616 PM Event and Control registers 6617 SCI interrupt (and handler) 6618 Fixed Events 6619 General Purpose Events (GPEs) 6620 Global Lock 6621 ACPI PM timer 6622 FACS table (Waking vectors and Global Lock) 6623 6624Updated the unix tarball directory structure to match the ACPICA git 6625source 6626tree. This ensures that the generic unix makefiles work properly (in 6627generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 6628867. 6629 6630Updated the return value of the _REV predefined method to integer value 5 6631to 6632reflect ACPI 5.0 support. 6633 6634Moved the external ACPI PM timer interface prototypes to the public 6635acpixf.h 6636file where they belong. 6637 6638Example Code and Data Size: These are the sizes for the OS-independent 6639acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6640debug 6641version of the code includes the debug output trace mechanism and has a 6642much 6643larger code and data size. 6644 6645 Previous Release: 6646 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 6647 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 6648 Current Release: 6649 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 6650 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 6651 6652 66532) iASL Compiler/Disassembler and Tools: 6654 6655Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 6656descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 6657incorrectly displayed. 6658 6659AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 6660specification. 6661 6662---------------------------------------- 666311 January 2012. Summary of changes for version 20120111: 6664 6665 66661) ACPICA Core Subsystem: 6667 6668Implemented a new mechanism to allow host device drivers to check for 6669address 6670range conflicts with ACPI Operation Regions. Both SystemMemory and 6671SystemIO 6672address spaces are supported. A new external interface, 6673AcpiCheckAddressRange, 6674allows drivers to check an address range against the ACPI namespace. See 6675the 6676ACPICA reference for additional details. Adds one new file, 6677utilities/utaddress.c. Lin Ming, Bob Moore. 6678 6679Fixed several issues with the ACPI 5.0 FADT support: Add the sleep 6680Control 6681and 6682Status registers, update the ACPI 5.0 flags, and update internal data 6683structures to handle an FADT larger than 256 bytes. The size of the ACPI 66845.0 6685FADT is 268 bytes. 6686 6687Updated all ACPICA copyrights and signons to 2012. Added the 2012 6688copyright to 6689all module headers and signons, including the standard Linux header. This 6690affects virtually every file in the ACPICA core subsystem, iASL compiler, 6691and 6692all ACPICA utilities. 6693 6694Example Code and Data Size: These are the sizes for the OS-independent 6695acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6696debug 6697version of the code includes the debug output trace mechanism and has a 6698much 6699larger code and data size. 6700 6701 Previous Release: 6702 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 6703 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 6704 Current Release: 6705 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 6706 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 6707 6708 67092) iASL Compiler/Disassembler and Tools: 6710 6711Disassembler: fixed a problem with the automatic resource tag generation 6712support. Fixes a problem where the resource tags are inadvertently not 6713constructed if the table being disassembled contains external references 6714to 6715control methods. Moved the actual construction of the tags to after the 6716final 6717namespace is constructed (after 2nd parse is invoked due to external 6718control 6719method references.) ACPICA BZ 941. 6720 6721Table Compiler: Make all "generic" operators caseless. These are the 6722operators 6723like UINT8, String, etc. Making these caseless improves ease-of-use. 6724ACPICA BZ 6725934. 6726 6727---------------------------------------- 672823 November 2011. Summary of changes for version 20111123: 6729 67300) ACPI 5.0 Support: 6731 6732This release contains full support for the ACPI 5.0 specification, as 6733summarized below. 6734 6735Reduced Hardware Support: 6736------------------------- 6737 6738This support allows for ACPI systems without the usual ACPI hardware. 6739This 6740support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA 6741will 6742not attempt to initialize or use any of the usual ACPI hardware. Note, 6743when 6744this flag is set, all of the following ACPI hardware is assumed to be not 6745present and is not initialized or accessed: 6746 6747 General Purpose Events (GPEs) 6748 Fixed Events (PM1a/PM1b and PM Control) 6749 Power Management Timer and Console Buttons (power/sleep) 6750 Real-time Clock Alarm 6751 Global Lock 6752 System Control Interrupt (SCI) 6753 The FACS is assumed to be non-existent 6754 6755ACPI Tables: 6756------------ 6757 6758All new tables and updates to existing tables are fully supported in the 6759ACPICA headers (for use by device drivers), the disassembler, and the 6760iASL 6761Data Table Compiler. ACPI 5.0 defines these new tables: 6762 6763 BGRT /* Boot Graphics Resource Table */ 6764 DRTM /* Dynamic Root of Trust for Measurement table */ 6765 FPDT /* Firmware Performance Data Table */ 6766 GTDT /* Generic Timer Description Table */ 6767 MPST /* Memory Power State Table */ 6768 PCCT /* Platform Communications Channel Table */ 6769 PMTT /* Platform Memory Topology Table */ 6770 RASF /* RAS Feature table */ 6771 6772Operation Regions/SpaceIDs: 6773--------------------------- 6774 6775All new operation regions are fully supported by the iASL compiler, the 6776disassembler, and the ACPICA runtime code (for dispatch to region 6777handlers.) 6778The new operation region Space IDs are: 6779 6780 GeneralPurposeIo 6781 GenericSerialBus 6782 6783Resource Descriptors: 6784--------------------- 6785 6786All new ASL resource descriptors are fully supported by the iASL 6787compiler, 6788the 6789ASL/AML disassembler, and the ACPICA runtime Resource Manager code 6790(including 6791all new predefined resource tags). New descriptors are: 6792 6793 FixedDma 6794 GpioIo 6795 GpioInt 6796 I2cSerialBus 6797 SpiSerialBus 6798 UartSerialBus 6799 6800ASL/AML Operators, New and Modified: 6801------------------------------------ 6802 6803One new operator is added, the Connection operator, which is used to 6804associate 6805a GeneralPurposeIo or GenericSerialBus resource descriptor with 6806individual 6807field objects within an operation region. Several new protocols are 6808associated 6809with the AccessAs operator. All are fully supported by the iASL compiler, 6810disassembler, and runtime ACPICA AML interpreter: 6811 6812 Connection // Declare Field Connection 6813attributes 6814 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 6815 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes 6816Protocol 6817 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 6818 RawDataBuffer // Data type for Vendor Data 6819fields 6820 6821Predefined ASL/AML Objects: 6822--------------------------- 6823 6824All new predefined objects/control-methods are supported by the iASL 6825compiler 6826and the ACPICA runtime validation/repair (arguments and return values.) 6827New 6828predefined names include the following: 6829 6830Standard Predefined Names (Objects or Control Methods): 6831 _AEI, _CLS, _CPC, _CWS, _DEP, 6832 _DLM, _EVT, _GCP, _CRT, _GWS, 6833 _HRV, _PRE, _PSE, _SRT, _SUB. 6834 6835Resource Tags (Names used to access individual fields within resource 6836descriptors): 6837 _DBT, _DPL, _DRS, _END, _FLC, 6838 _IOR, _LIN, _MOD, _PAR, _PHA, 6839 _PIN, _PPI, _POL, _RXL, _SLV, 6840 _SPE, _STB, _TXL, _VEN. 6841 6842ACPICA External Interfaces: 6843--------------------------- 6844 6845Several new interfaces have been defined for use by ACPI-related device 6846drivers and other host OS services: 6847 6848AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS 6849to 6850acquire and release AML mutexes that are defined in the DSDT/SSDT tables 6851provided by the BIOS. They are intended to be used in conjunction with 6852the 6853ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 6854mutual exclusion with the AML code/interpreter. 6855 6856AcpiGetEventResources: Returns the (formatted) resource descriptors as 6857defined 6858by the ACPI 5.0 _AEI object (ACPI Event Information). This object 6859provides 6860resource descriptors associated with hardware-reduced platform events, 6861similar 6862to the AcpiGetCurrentResources interface. 6863 6864Operation Region Handlers: For General Purpose IO and Generic Serial Bus 6865operation regions, information about the Connection() object and any 6866optional 6867length information is passed to the region handler within the Context 6868parameter. 6869 6870AcpiBufferToResource: This interface converts a raw AML buffer containing 6871a 6872resource template or resource descriptor to the ACPI_RESOURCE internal 6873format 6874suitable for use by device drivers. Can be used by an operation region 6875handler 6876to convert the Connection() buffer object into a ACPI_RESOURCE. 6877 6878Miscellaneous/Tools/TestSuites: 6879------------------------------- 6880 6881Support for extended _HID names (Four alpha characters instead of three). 6882Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 6883Support for ACPI 5.0 features in the ASLTS test suite. 6884Fully updated documentation (ACPICA and iASL reference documents.) 6885 6886ACPI Table Definition Language: 6887------------------------------- 6888 6889Support for this language was implemented and released as a subsystem of 6890the 6891iASL compiler in 2010. (See the iASL compiler User Guide.) 6892 6893 6894Non-ACPI 5.0 changes for this release: 6895-------------------------------------- 6896 68971) ACPICA Core Subsystem: 6898 6899Fix a problem with operation region declarations where a failure can 6900occur 6901if 6902the region name and an argument that evaluates to an object (such as the 6903region address) are in different namespace scopes. Lin Ming, ACPICA BZ 6904937. 6905 6906Do not abort an ACPI table load if an invalid space ID is found within. 6907This 6908will be caught later if the offending method is executed. ACPICA BZ 925. 6909 6910Fixed an issue with the FFixedHW space ID where the ID was not always 6911recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 6912 6913Fixed a problem with the 32-bit generation of the unix-specific OSL 6914(osunixxf.c). Lin Ming, ACPICA BZ 936. 6915 6916Several changes made to enable generation with the GCC 4.6 compiler. 6917ACPICA BZ 6918935. 6919 6920New error messages: Unsupported I/O requests (not 8/16/32 bit), and 6921Index/Bank 6922field registers out-of-range. 6923 69242) iASL Compiler/Disassembler and Tools: 6925 6926iASL: Implemented the __PATH__ operator, which returns the full pathname 6927of 6928the current source file. 6929 6930AcpiHelp: Automatically display expanded keyword information for all ASL 6931operators. 6932 6933Debugger: Add "Template" command to disassemble/dump resource template 6934buffers. 6935 6936Added a new master script to generate and execute the ASLTS test suite. 6937Automatically handles 32- and 64-bit generation. See tests/aslts.sh 6938 6939iASL: Fix problem with listing generation during processing of the 6940Switch() 6941operator where AML listing was disabled until the entire Switch block was 6942completed. 6943 6944iASL: Improve support for semicolon statement terminators. Fix "invalid 6945character" message for some cases when the semicolon is used. Semicolons 6946are 6947now allowed after every <Term> grammar element. ACPICA BZ 927. 6948 6949iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 6950923. 6951 6952Disassembler: Fix problem with disassembly of the DataTableRegion 6953operator 6954where an inadvertent "Unhandled deferred opcode" message could be 6955generated. 6956 69573) Example Code and Data Size 6958 6959These are the sizes for the OS-independent acpica.lib produced by the 6960Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 6961includes the debug output trace mechanism and has a much larger code and 6962data 6963size. 6964 6965 Previous Release: 6966 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 6967 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 6968 Current Release: 6969 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 6970 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 6971 6972---------------------------------------- 697322 September 2011. Summary of changes for version 20110922: 6974 69750) ACPI 5.0 News: 6976 6977Support for ACPI 5.0 in ACPICA has been underway for several months and 6978will 6979be released at the same time that ACPI 5.0 is officially released. 6980 6981The ACPI 5.0 specification is on track for release in the next few 6982months. 6983 69841) ACPICA Core Subsystem: 6985 6986Fixed a problem where the maximum sleep time for the Sleep() operator was 6987intended to be limited to two seconds, but was inadvertently limited to 698820 6989seconds instead. 6990 6991Linux and Unix makefiles: Added header file dependencies to ensure 6992correct 6993generation of ACPICA core code and utilities. Also simplified the 6994makefiles 6995considerably through the use of the vpath variable to specify search 6996paths. 6997ACPICA BZ 924. 6998 69992) iASL Compiler/Disassembler and Tools: 7000 7001iASL: Implemented support to check the access length for all fields 7002created to 7003access named Resource Descriptor fields. For example, if a resource field 7004is 7005defined to be two bits, a warning is issued if a CreateXxxxField() is 7006used 7007with an incorrect bit length. This is implemented for all current 7008resource 7009descriptor names. ACPICA BZ 930. 7010 7011Disassembler: Fixed a byte ordering problem with the output of 24-bit and 701256- 7013bit integers. 7014 7015iASL: Fixed a couple of issues associated with variable-length package 7016objects. 1) properly handle constants like One, Ones, Zero -- do not make 7017a 7018VAR_PACKAGE when these are used as a package length. 2) Allow the 7019VAR_PACKAGE 7020opcode (in addition to PACKAGE) when validating object types for 7021predefined 7022names. 7023 7024iASL: Emit statistics for all output files (instead of just the ASL input 7025and 7026AML output). Includes listings, hex files, etc. 7027 7028iASL: Added -G option to the table compiler to allow the compilation of 7029custom 7030ACPI tables. The only part of a table that is required is the standard 703136- 7032byte 7033ACPI header. 7034 7035AcpiXtract: Ported to the standard ACPICA environment (with ACPICA 7036headers), 7037which also adds correct 64-bit support. Also, now all output filenames 7038are 7039completely lower case. 7040 7041AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 7042loading table files. A warning is issued for any such tables. The only 7043exception is an FADT. This also fixes a possible fault when attempting to 7044load 7045non-AML tables. ACPICA BZ 932. 7046 7047AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where 7048a 7049missing table terminator could cause a fault when using the -p option. 7050 7051AcpiSrc: Fixed a possible divide-by-zero fault when generating file 7052statistics. 7053 70543) Example Code and Data Size 7055 7056These are the sizes for the OS-independent acpica.lib produced by the 7057Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 7058includes the debug output trace mechanism and has a much larger code and 7059data 7060size. 7061 7062 Previous Release (VC 9.0): 7063 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 7064 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 7065 Current Release (VC 9.0): 7066 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 7067 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 7068 7069 7070---------------------------------------- 707123 June 2011. Summary of changes for version 20110623: 7072 70731) ACPI CA Core Subsystem: 7074 7075Updated the predefined name repair mechanism to not attempt repair of a 7076_TSS 7077return object if a _PSS object is present. We can only sort the _TSS 7078return 7079package if there is no _PSS within the same scope. This is because if 7080_PSS 7081is 7082present, the ACPI specification dictates that the _TSS Power Dissipation 7083field 7084is to be ignored, and therefore some BIOSs leave garbage values in the 7085_TSS 7086Power field(s). In this case, it is best to just return the _TSS package 7087as- 7088is. Reported by, and fixed with assistance from Fenghua Yu. 7089 7090Added an option to globally disable the control method return value 7091validation 7092and repair. This runtime option can be used to disable return value 7093repair 7094if 7095this is causing a problem on a particular machine. Also added an option 7096to 7097AcpiExec (-dr) to set this disable flag. 7098 7099All makefiles and project files: Major changes to improve generation of 7100ACPICA 7101tools. ACPICA BZ 912: 7102 Reduce default optimization levels to improve compatibility 7103 For Linux, add strict-aliasing=0 for gcc 4 7104 Cleanup and simplify use of command line defines 7105 Cleanup multithread library support 7106 Improve usage messages 7107 7108Linux-specific header: update handling of THREAD_ID and pthread. For the 710932- 7110bit case, improve casting to eliminate possible warnings, especially with 7111the 7112acpica tools. 7113 7114Example Code and Data Size: These are the sizes for the OS-independent 7115acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 7116debug 7117version of the code includes the debug output trace mechanism and has a 7118much 7119larger code and data size. 7120 7121 Previous Release (VC 9.0): 7122 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 7123 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 7124 Current Release (VC 9.0): 7125 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 7126 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 7127 71282) iASL Compiler/Disassembler and Tools: 7129 7130With this release, a new utility named "acpihelp" has been added to the 7131ACPICA 7132package. This utility summarizes the ACPI specification chapters for the 7133ASL 7134and AML languages. It generates under Linux/Unix as well as Windows, and 7135provides the following functionality: 7136 Find/display ASL operator(s) -- with description and syntax. 7137 Find/display ASL keyword(s) -- with exact spelling and descriptions. 7138 Find/display ACPI predefined name(s) -- with description, number 7139 of arguments, and the return value data type. 7140 Find/display AML opcode name(s) -- with opcode, arguments, and 7141grammar. 7142 Decode/display AML opcode -- with opcode name, arguments, and 7143grammar. 7144 7145Service Layers: Make multi-thread support configurable. Conditionally 7146compile 7147the multi-thread support so that threading libraries will not be linked 7148if 7149not 7150necessary. The only tool that requires multi-thread support is AcpiExec. 7151 7152iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions 7153of 7154Bison appear to want the interface to yyerror to be a const char * (or at 7155least this is a problem when generating iASL on some systems.) ACPICA BZ 7156923 7157Pierre Lejeune. 7158 7159Tools: Fix for systems where O_BINARY is not defined. Only used for 7160Windows 7161versions of the tools. 7162 7163---------------------------------------- 716427 May 2011. Summary of changes for version 20110527: 7165 71661) ACPI CA Core Subsystem: 7167 7168ASL Load() operator: Reinstate most restrictions on the incoming ACPI 7169table 7170signature. Now, only allow SSDT, OEMx, and a null signature. History: 7171 1) Originally, we checked the table signature for "SSDT" or "PSDT". 7172 (PSDT is now obsolete.) 7173 2) We added support for OEMx tables, signature "OEM" plus a fourth 7174 "don't care" character. 7175 3) Valid tables were encountered with a null signature, so we just 7176 gave up on validating the signature, (05/2008). 7177 4) We encountered non-AML tables such as the MADT, which caused 7178 interpreter errors and kernel faults. So now, we once again allow 7179 only SSDT, OEMx, and now, also a null signature. (05/2011). 7180 7181Added the missing _TDL predefined name to the global name list in order 7182to 7183enable validation. Affects both the core ACPICA code and the iASL 7184compiler. 7185 7186Example Code and Data Size: These are the sizes for the OS-independent 7187acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 7188debug 7189version of the code includes the debug output trace mechanism and has a 7190much 7191larger code and data size. 7192 7193 Previous Release (VC 9.0): 7194 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 7195 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 7196 Current Release (VC 9.0): 7197 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 7198 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 7199 72002) iASL Compiler/Disassembler and Tools: 7201 7202Debugger/AcpiExec: Implemented support for "complex" method arguments on 7203the 7204debugger command line. This adds support beyond simple integers -- 7205including 7206Strings, Buffers, and Packages. Includes support for nested packages. 7207Increased the default command line buffer size to accommodate these 7208arguments. 7209See the ACPICA reference for details and syntax. ACPICA BZ 917. 7210 7211Debugger/AcpiExec: Implemented support for "default" method arguments for 7212the 7213Execute/Debug command. Now, the debugger will always invoke a control 7214method 7215with the required number of arguments -- even if the command line 7216specifies 7217none or insufficient arguments. It uses default integer values for any 7218missing 7219arguments. Also fixes a bug where only six method arguments maximum were 7220supported instead of the required seven. 7221 7222Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine 7223and 7224also return status in order to prevent buffer overruns. See the ACPICA 7225reference for details and syntax. ACPICA BZ 921 7226 7227iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 7228makefiles to simplify support for the two different but similar parser 7229generators, bison and yacc. 7230 7231Updated the generic unix makefile for gcc 4. The default gcc version is 7232now 7233expected to be 4 or greater, since options specific to gcc 4 are used. 7234 7235---------------------------------------- 723613 April 2011. Summary of changes for version 20110413: 7237 72381) ACPI CA Core Subsystem: 7239 7240Implemented support to execute a so-called "orphan" _REG method under the 7241EC 7242device. This change will force the execution of a _REG method underneath 7243the 7244EC 7245device even if there is no corresponding operation region of type 7246EmbeddedControl. Fixes a problem seen on some machines and apparently is 7247compatible with Windows behavior. ACPICA BZ 875. 7248 7249Added more predefined methods that are eligible for automatic NULL 7250package 7251element removal. This change adds another group of predefined names to 7252the 7253list 7254of names that can be repaired by having NULL package elements dynamically 7255removed. This group are those methods that return a single variable- 7256length 7257package containing simple data types such as integers, buffers, strings. 7258This 7259includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, 7260_PSL, 7261_Sx, 7262and _TZD. ACPICA BZ 914. 7263 7264Split and segregated all internal global lock functions to a new file, 7265evglock.c. 7266 7267Updated internal address SpaceID for DataTable regions. Moved this 7268internal 7269space 7270id in preparation for ACPI 5.0 changes that will include some new space 7271IDs. 7272This 7273change should not affect user/host code. 7274 7275Example Code and Data Size: These are the sizes for the OS-independent 7276acpica.lib 7277produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 7278version of 7279the code includes the debug output trace mechanism and has a much larger 7280code 7281and 7282data size. 7283 7284 Previous Release (VC 9.0): 7285 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 7286 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 7287 Current Release (VC 9.0): 7288 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 7289 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 7290 72912) iASL Compiler/Disassembler and Tools: 7292 7293iASL/DTC: Major update for new grammar features. Allow generic data types 7294in 7295custom ACPI tables. Field names are now optional. Any line can be split 7296to 7297multiple lines using the continuation char (\). Large buffers now use 7298line- 7299continuation character(s) and no colon on the continuation lines. See the 7300grammar 7301update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob 7302Moore. 7303 7304iASL: Mark ASL "Return()" and the simple "Return" as "Null" return 7305statements. 7306Since the parser stuffs a "zero" as the return value for these statements 7307(due 7308to 7309the underlying AML grammar), they were seen as "return with value" by the 7310iASL 7311semantic checking. They are now seen correctly as "null" return 7312statements. 7313 7314iASL: Check if a_REG declaration has a corresponding Operation Region. 7315Adds a 7316check for each _REG to ensure that there is in fact a corresponding 7317operation 7318region declaration in the same scope. If not, the _REG method is not very 7319useful 7320since it probably won't be executed. ACPICA BZ 915. 7321 7322iASL/DTC: Finish support for expression evaluation. Added a new 7323expression 7324parser 7325that implements c-style operator precedence and parenthesization. ACPICA 7326bugzilla 7327908. 7328 7329Disassembler/DTC: Remove support for () and <> style comments in data 7330tables. 7331Now 7332that DTC has full expression support, we don't want to have comment 7333strings 7334that 7335start with a parentheses or a less-than symbol. Now, only the standard /* 7336and 7337// 7338comments are supported, as well as the bracket [] comments. 7339 7340AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 7341"unusual" 7342headers in the acpidump file. Update the header validation to support 7343these 7344tables. Problem introduced in previous AcpiXtract version in the change 7345to 7346support "wrong checksum" error messages emitted by acpidump utility. 7347 7348iASL: Add a * option to generate all template files (as a synonym for 7349ALL) 7350as 7351in 7352"iasl -T *" or "iasl -T ALL". 7353 7354iASL/DTC: Do not abort compiler on fatal errors. We do not want to 7355completely 7356abort the compiler on "fatal" errors, simply should abort the current 7357compile. 7358This allows multiple compiles with a single (possibly wildcard) compiler 7359invocation. 7360 7361---------------------------------------- 736216 March 2011. Summary of changes for version 20110316: 7363 73641) ACPI CA Core Subsystem: 7365 7366Fixed a problem caused by a _PRW method appearing at the namespace root 7367scope 7368during the setup of wake GPEs. A fault could occur if a _PRW directly 7369under 7370the 7371root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 7372 7373Implemented support for "spurious" Global Lock interrupts. On some 7374systems, a 7375global lock interrupt can occur without the pending flag being set. Upon 7376a 7377GL 7378interrupt, we now ensure that a thread is actually waiting for the lock 7379before 7380signaling GL availability. Rafael Wysocki, Bob Moore. 7381 7382Example Code and Data Size: These are the sizes for the OS-independent 7383acpica.lib 7384produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 7385version of 7386the code includes the debug output trace mechanism and has a much larger 7387code 7388and 7389data size. 7390 7391 Previous Release (VC 9.0): 7392 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 7393 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 7394 Current Release (VC 9.0): 7395 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 7396 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 7397 73982) iASL Compiler/Disassembler and Tools: 7399 7400Implemented full support for the "SLIC" ACPI table. Includes support in 7401the 7402header files, disassembler, table compiler, and template generator. Bob 7403Moore, 7404Lin Ming. 7405 7406AcpiXtract: Correctly handle embedded comments and messages from 7407AcpiDump. 7408Apparently some or all versions of acpidump will occasionally emit a 7409comment 7410like 7411"Wrong checksum", etc., into the dump file. This was causing problems for 7412AcpiXtract. ACPICA BZ 905. 7413 7414iASL: Fix the Linux makefile by removing an inadvertent double file 7415inclusion. 7416ACPICA BZ 913. 7417 7418AcpiExec: Update installation of operation region handlers. Install one 7419handler 7420for a user-defined address space. This is used by the ASL test suite 7421(ASLTS). 7422 7423---------------------------------------- 742411 February 2011. Summary of changes for version 20110211: 7425 74261) ACPI CA Core Subsystem: 7427 7428Added a mechanism to defer _REG methods for some early-installed 7429handlers. 7430Most user handlers should be installed before call to 7431AcpiEnableSubsystem. 7432However, Event handlers and region handlers should be installed after 7433AcpiInitializeObjects. Override handlers for the "default" regions should 7434be 7435installed early, however. This change executes all _REG methods for the 7436default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 7437chicken/egg issues between them. ACPICA BZ 848. 7438 7439Implemented an optimization for GPE detection. This optimization will 7440simply 7441ignore GPE registers that contain no enabled GPEs -- there is no need to 7442read the register since this information is available internally. This 7443becomes more important on machines with a large GPE space. ACPICA 7444bugzilla 7445884. Lin Ming. Suggestion from Joe Liu. 7446 7447Removed all use of the highly unreliable FADT revision field. The 7448revision 7449number in the FADT has been found to be completely unreliable and cannot 7450be 7451trusted. Only the actual table length can be used to infer the version. 7452This 7453change updates the ACPICA core and the disassembler so that both no 7454longer 7455even look at the FADT version and instead depend solely upon the FADT 7456length. 7457 7458Fix an unresolved name issue for the no-debug and no-error-message source 7459generation cases. The _AcpiModuleName was left undefined in these cases, 7460but 7461it is actually needed as a parameter to some interfaces. Define 7462_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 7463 7464Split several large files (makefiles and project files updated) 7465 utglobal.c -> utdecode.c 7466 dbcomds.c -> dbmethod.c dbnames.c 7467 dsopcode.c -> dsargs.c dscontrol.c 7468 dsload.c -> dsload2.c 7469 aslanalyze.c -> aslbtypes.c aslwalks.c 7470 7471Example Code and Data Size: These are the sizes for the OS-independent 7472acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 7473debug version of the code includes the debug output trace mechanism and 7474has 7475a much larger code and data size. 7476 7477 Previous Release (VC 9.0): 7478 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 7479 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 7480 Current Release (VC 9.0): 7481 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 7482 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 7483 74842) iASL Compiler/Disassembler and Tools: 7485 7486iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 7487These are useful C-style macros with the standard definitions. ACPICA 7488bugzilla 898. 7489 7490iASL/DTC: Added support for integer expressions and labels. Support for 7491full 7492expressions for all integer fields in all ACPI tables. Support for labels 7493in 7494"generic" portions of tables such as UEFI. See the iASL reference manual. 7495 7496Debugger: Added a command to display the status of global handlers. The 7497"handlers" command will display op region, fixed event, and miscellaneous 7498global handlers. installation status -- and for op regions, whether 7499default 7500or user-installed handler will be used. 7501 7502iASL: Warn if reserved method incorrectly returns a value. Many 7503predefined 7504names are defined such that they do not return a value. If implemented as 7505a 7506method, issue a warning if such a name explicitly returns a value. ACPICA 7507Bugzilla 855. 7508 7509iASL: Added detection of GPE method name conflicts. Detects a conflict 7510where 7511there are two GPE methods of the form _Lxy and _Exy in the same scope. 7512(For 7513example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 7514 7515iASL/DTC: Fixed a couple input scanner issues with comments and line 7516numbers. Comment remover could get confused and miss a comment ending. 7517Fixed 7518a problem with line counter maintenance. 7519 7520iASL/DTC: Reduced the severity of some errors from fatal to error. There 7521is 7522no need to abort on simple errors within a field definition. 7523 7524Debugger: Simplified the output of the help command. All help output now 7525in 7526a single screen, instead of help subcommands. ACPICA Bugzilla 897. 7527 7528---------------------------------------- 752912 January 2011. Summary of changes for version 20110112: 7530 75311) ACPI CA Core Subsystem: 7532 7533Fixed a race condition between method execution and namespace walks that 7534can 7535possibly cause a fault. The problem was apparently introduced in version 753620100528 as a result of a performance optimization that reduces the 7537number 7538of 7539namespace walks upon method exit by using the delete_namespace_subtree 7540function instead of the delete_namespace_by_owner function used 7541previously. 7542Bug is a missing namespace lock in the delete_namespace_subtree function. 7543dana.myers@oracle.com 7544 7545Fixed several issues and a possible fault with the automatic "serialized" 7546method support. History: This support changes a method to "serialized" on 7547the 7548fly if the method generates an AE_ALREADY_EXISTS error, indicating the 7549possibility that it cannot handle reentrancy. This fix repairs a couple 7550of 7551issues seen in the field, especially on machines with many cores: 7552 7553 1) Delete method children only upon the exit of the last thread, 7554 so as to not delete objects out from under other running threads 7555 (and possibly causing a fault.) 7556 2) Set the "serialized" bit for the method only upon the exit of the 7557 Last thread, so as to not cause deadlock when running threads 7558 attempt to exit. 7559 3) Cleanup the use of the AML "MethodFlags" and internal method flags 7560 so that there is no longer any confusion between the two. 7561 7562 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 7563 7564Debugger: Now lock the namespace for duration of a namespace dump. 7565Prevents 7566issues if the namespace is changing dynamically underneath the debugger. 7567Especially affects temporary namespace nodes, since the debugger displays 7568these also. 7569 7570Updated the ordering of include files. The ACPICA headers should appear 7571before any compiler-specific headers (stdio.h, etc.) so that acenv.h can 7572set 7573any necessary compiler-specific defines, etc. Affects the ACPI-related 7574tools 7575and utilities. 7576 7577Updated all ACPICA copyrights and signons to 2011. Added the 2011 7578copyright 7579to all module headers and signons, including the Linux header. This 7580affects 7581virtually every file in the ACPICA core subsystem, iASL compiler, and all 7582utilities. 7583 7584Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 7585project files for VC++ 6.0 are now obsolete. New project files can be 7586found 7587under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 7588details. 7589 7590Example Code and Data Size: These are the sizes for the OS-independent 7591acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 7592debug version of the code includes the debug output trace mechanism and 7593has a 7594much larger code and data size. 7595 7596 Previous Release (VC 6.0): 7597 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 7598 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 7599 Current Release (VC 9.0): 7600 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 7601 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 7602 76032) iASL Compiler/Disassembler and Tools: 7604 7605iASL: Added generic data types to the Data Table compiler. Add "generic" 7606data 7607types such as UINT32, String, Unicode, etc., to simplify the generation 7608of 7609platform-defined tables such as UEFI. Lin Ming. 7610 7611iASL: Added listing support for the Data Table Compiler. Adds listing 7612support 7613(-l) to display actual binary output for each line of input code. 7614 7615---------------------------------------- 761609 December 2010. Summary of changes for version 20101209: 7617 76181) ACPI CA Core Subsystem: 7619 7620Completed the major overhaul of the GPE support code that was begun in 7621July 76222010. Major features include: removal of _PRW execution in ACPICA (host 7623executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 7624changes to existing interfaces, simplification of GPE handler operation, 7625and 7626a handful of new interfaces: 7627 7628 AcpiUpdateAllGpes 7629 AcpiFinishGpe 7630 AcpiSetupGpeForWake 7631 AcpiSetGpeWakeMask 7632 One new file, evxfgpe.c to consolidate all external GPE interfaces. 7633 7634See the ACPICA Programmer Reference for full details and programming 7635information. See the new section 4.4 "General Purpose Event (GPE) 7636Support" 7637for a full overview, and section 8.7 "ACPI General Purpose Event 7638Management" 7639for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin 7640Ming, 7641Bob Moore, Rafael Wysocki. 7642 7643Implemented a new GPE feature for Windows compatibility, the "Implicit 7644Wake 7645GPE Notify". This feature will automatically issue a Notify(2) on a 7646device 7647when a Wake GPE is received if there is no corresponding GPE method or 7648handler. ACPICA BZ 870. 7649 7650Fixed a problem with the Scope() operator during table parse and load 7651phase. 7652During load phase (table load or method execution), the scope operator 7653should 7654not enter the target into the namespace. Instead, it should open a new 7655scope 7656at the target location. Linux BZ 19462, ACPICA BZ 882. 7657 7658Example Code and Data Size: These are the sizes for the OS-independent 7659acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7660debug version of the code includes the debug output trace mechanism and 7661has a 7662much larger code and data size. 7663 7664 Previous Release: 7665 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 7666 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 7667 Current Release: 7668 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 7669 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 7670 76712) iASL Compiler/Disassembler and Tools: 7672 7673iASL: Relax the alphanumeric restriction on _CID strings. These strings 7674are 7675"bus-specific" per the ACPI specification, and therefore any characters 7676are 7677acceptable. The only checks that can be performed are for a null string 7678and 7679perhaps for a leading asterisk. ACPICA BZ 886. 7680 7681iASL: Fixed a problem where a syntax error that caused a premature EOF 7682condition on the source file emitted a very confusing error message. The 7683premature EOF is now detected correctly. ACPICA BZ 891. 7684 7685Disassembler: Decode the AccessSize within a Generic Address Structure 7686(byte 7687access, word access, etc.) Note, this field does not allow arbitrary bit 7688access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 7689 7690New: AcpiNames utility - Example namespace dump utility. Shows an example 7691of 7692ACPICA configuration for a minimal namespace dump utility. Uses table and 7693namespace managers, but no AML interpreter. Does not add any 7694functionality 7695over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 7696partition and configure ACPICA. ACPICA BZ 883. 7697 7698AML Debugger: Increased the debugger buffer size for method return 7699objects. 7700Was 4K, increased to 16K. Also enhanced error messages for debugger 7701method 7702execution, including the buffer overflow case. 7703 7704---------------------------------------- 770513 October 2010. Summary of changes for version 20101013: 7706 77071) ACPI CA Core Subsystem: 7708 7709Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, 7710now 7711clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 7712HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 7713 7714Changed the type of the predefined namespace object _TZ from ThermalZone 7715to 7716Device. This was found to be confusing to the host software that 7717processes 7718the various thermal zones, since _TZ is not really a ThermalZone. 7719However, 7720a 7721Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 7722Zhang. 7723 7724Added Windows Vista SP2 to the list of supported _OSI strings. The actual 7725string is "Windows 2006 SP2". 7726 7727Eliminated duplicate code in AcpiUtExecute* functions. Now that the 7728nsrepair 7729code automatically repairs _HID-related strings, this type of code is no 7730longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 7731878. 7732 7733Example Code and Data Size: These are the sizes for the OS-independent 7734acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7735debug version of the code includes the debug output trace mechanism and 7736has a 7737much larger code and data size. 7738 7739 Previous Release: 7740 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 7741 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 7742 Current Release: 7743 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 7744 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 7745 77462) iASL Compiler/Disassembler and Tools: 7747 7748iASL: Implemented additional compile-time validation for _HID strings. 7749The 7750non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the 7751length 7752of 7753the string must be exactly seven or eight characters. For both _HID and 7754_CID 7755strings, all characters must be alphanumeric. ACPICA BZ 874. 7756 7757iASL: Allow certain "null" resource descriptors. Some BIOS code creates 7758descriptors that are mostly or all zeros, with the expectation that they 7759will 7760be filled in at runtime. iASL now allows this as long as there is a 7761"resource 7762tag" (name) associated with the descriptor, which gives the ASL a handle 7763needed to modify the descriptor. ACPICA BZ 873. 7764 7765Added single-thread support to the generic Unix application OSL. 7766Primarily 7767for iASL support, this change removes the use of semaphores in the 7768single- 7769threaded ACPICA tools/applications - increasing performance. The 7770_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 7771option. ACPICA BZ 879. 7772 7773AcpiExec: several fixes for the 64-bit version. Adds XSDT support and 7774support 7775for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 7776 7777iASL: Moved all compiler messages to a new file, aslmessages.h. 7778 7779---------------------------------------- 778015 September 2010. Summary of changes for version 20100915: 7781 77821) ACPI CA Core Subsystem: 7783 7784Removed the AcpiOsDerivePciId OSL interface. The various host 7785implementations 7786of this function were not OS-dependent and are now obsolete and can be 7787removed from all host OSLs. This function has been replaced by 7788AcpiHwDerivePciId, which is now part of the ACPICA core code. 7789AcpiHwDerivePciId has been implemented without recursion. Adds one new 7790module, hwpci.c. ACPICA BZ 857. 7791 7792Implemented a dynamic repair for _HID and _CID strings. The following 7793problems are now repaired at runtime: 1) Remove a leading asterisk in the 7794string, and 2) the entire string is uppercased. Both repairs are in 7795accordance with the ACPI specification and will simplify host driver 7796code. 7797ACPICA BZ 871. 7798 7799The ACPI_THREAD_ID type is no longer configurable, internally it is now 7800always UINT64. This simplifies the ACPICA code, especially any printf 7801output. 7802UINT64 is the only common data type for all thread_id types across all 7803operating systems. It is now up to the host OSL to cast the native 7804thread_id 7805type to UINT64 before returning the value to ACPICA (via 7806AcpiOsGetThreadId). 7807Lin Ming, Bob Moore. 7808 7809Added the ACPI_INLINE type to enhance the ACPICA configuration. The 7810"inline" 7811keyword is not standard across compilers, and this type allows inline to 7812be 7813configured on a per-compiler basis. Lin Ming. 7814 7815Made the system global AcpiGbl_SystemAwakeAndRunning publicly 7816available. 7817Added an extern for this boolean in acpixf.h. Some hosts utilize this 7818value 7819during suspend/restore operations. ACPICA BZ 869. 7820 7821All code that implements error/warning messages with the "ACPI:" prefix 7822has 7823been moved to a new module, utxferror.c. 7824 7825The UINT64_OVERLAY was moved to utmath.c, which is the only module where 7826it 7827is used. ACPICA BZ 829. Lin Ming, Bob Moore. 7828 7829Example Code and Data Size: These are the sizes for the OS-independent 7830acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7831debug version of the code includes the debug output trace mechanism and 7832has a 7833much larger code and data size. 7834 7835 Previous Release: 7836 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 7837 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 7838 Current Release: 7839 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 7840 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 7841 78422) iASL Compiler/Disassembler and Tools: 7843 7844iASL/Disassembler: Write ACPI errors to stderr instead of the output 7845file. 7846This keeps the output files free of random error messages that may 7847originate 7848from within the namespace/interpreter code. Used this opportunity to 7849merge 7850all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 7851866. Lin Ming, Bob Moore. 7852 7853Tools: update some printfs for ansi warnings on size_t. Handle width 7854change 7855of size_t on 32-bit versus 64-bit generations. Lin Ming. 7856 7857---------------------------------------- 785806 August 2010. Summary of changes for version 20100806: 7859 78601) ACPI CA Core Subsystem: 7861 7862Designed and implemented a new host interface to the _OSI support code. 7863This 7864will allow the host to dynamically add or remove multiple _OSI strings, 7865as 7866well as install an optional handler that is called for each _OSI 7867invocation. 7868Also added a new AML debugger command, 'osi' to display and modify the 7869global 7870_OSI string table, and test support in the AcpiExec utility. See the 7871ACPICA 7872reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 7873New Functions: 7874 AcpiInstallInterface - Add an _OSI string. 7875 AcpiRemoveInterface - Delete an _OSI string. 7876 AcpiInstallInterfaceHandler - Install optional _OSI handler. 7877Obsolete Functions: 7878 AcpiOsValidateInterface - no longer used. 7879New Files: 7880 source/components/utilities/utosi.c 7881 7882Re-introduced the support to enable multi-byte transfers for Embedded 7883Controller (EC) operation regions. A reported problem was found to be a 7884bug 7885in the host OS, not in the multi-byte support. Previously, the maximum 7886data 7887size passed to the EC operation region handler was a single byte. There 7888are 7889often EC Fields larger than one byte that need to be transferred, and it 7890is 7891useful for the EC driver to lock these as a single transaction. This 7892change 7893enables single transfers larger than 8 bits. This effectively changes the 7894access to the EC space from ByteAcc to AnyAcc, and will probably require 7895changes to the host OS Embedded Controller driver to enable 16/32/64/256- 7896bit 7897transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 7898 7899Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 7900prototype in acpiosxf.h had the output value pointer as a (void *). 7901It should be a (UINT64 *). This may affect some host OSL code. 7902 7903Fixed a couple problems with the recently modified Linux makefiles for 7904iASL 7905and AcpiExec. These new makefiles place the generated object files in the 7906local directory so that there can be no collisions between the files that 7907are 7908shared between them that are compiled with different options. 7909 7910Example Code and Data Size: These are the sizes for the OS-independent 7911acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7912debug version of the code includes the debug output trace mechanism and 7913has a 7914much larger code and data size. 7915 7916 Previous Release: 7917 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 7918 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 7919 Current Release: 7920 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 7921 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 7922 79232) iASL Compiler/Disassembler and Tools: 7924 7925iASL/Disassembler: Added a new option (-da, "disassemble all") to load 7926the 7927namespace from and disassemble an entire group of AML files. Useful for 7928loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) 7929and 7930disassembling with one simple command. ACPICA BZ 865. Lin Ming. 7931 7932iASL: Allow multiple invocations of -e option. This change allows 7933multiple 7934uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 7935834. 7936Lin Ming. 7937 7938---------------------------------------- 793902 July 2010. Summary of changes for version 20100702: 7940 79411) ACPI CA Core Subsystem: 7942 7943Implemented several updates to the recently added GPE reference count 7944support. The model for "wake" GPEs is changing to give the host OS 7945complete 7946control of these GPEs. Eventually, the ACPICA core will not execute any 7947_PRW 7948methods, since the host already must execute them. Also, additional 7949changes 7950were made to help ensure that the reference counts are kept in proper 7951synchronization with reality. Rafael J. Wysocki. 7952 79531) Ensure that GPEs are not enabled twice during initialization. 79542) Ensure that GPE enable masks stay in sync with the reference count. 79553) Do not inadvertently enable GPEs when writing GPE registers. 79564) Remove the internal wake reference counter and add new AcpiGpeWakeup 7957interface. This interface will set or clear individual GPEs for wakeup. 79585) Remove GpeType argument from AcpiEnable and AcpiDisable. These 7959interfaces 7960are now used for "runtime" GPEs only. 7961 7962Changed the behavior of the GPE install/remove handler interfaces. The 7963GPE 7964is 7965no longer disabled during this process, as it was found to cause problems 7966on 7967some machines. Rafael J. Wysocki. 7968 7969Reverted a change introduced in version 20100528 to enable Embedded 7970Controller multi-byte transfers. This change was found to cause problems 7971with 7972Index Fields and possibly Bank Fields. It will be reintroduced when these 7973problems have been resolved. 7974 7975Fixed a problem with references to Alias objects within Package Objects. 7976A 7977reference to an Alias within the definition of a Package was not always 7978resolved properly. Aliases to objects like Processors, Thermal zones, 7979etc. 7980were resolved to the actual object instead of a reference to the object 7981as 7982it 7983should be. Package objects are only allowed to contain integer, string, 7984buffer, package, and reference objects. Redhat bugzilla 608648. 7985 7986Example Code and Data Size: These are the sizes for the OS-independent 7987acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7988debug version of the code includes the debug output trace mechanism and 7989has a 7990much larger code and data size. 7991 7992 Previous Release: 7993 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 7994 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 7995 Current Release: 7996 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 7997 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 7998 79992) iASL Compiler/Disassembler and Tools: 8000 8001iASL: Implemented a new compiler subsystem to allow definition and 8002compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. 8003These 8004are called "ACPI Data Tables", and the new compiler is the "Data Table 8005Compiler". This compiler is intended to simplify the existing error-prone 8006process of creating these tables for the BIOS, as well as allowing the 8007disassembly, modification, recompilation, and override of existing ACPI 8008data 8009tables. See the iASL User Guide for detailed information. 8010 8011iASL: Implemented a new Template Generator option in support of the new 8012Data 8013Table Compiler. This option will create examples of all known ACPI tables 8014that can be used as the basis for table development. See the iASL 8015documentation and the -T option. 8016 8017Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 8018Descriptor Table). 8019 8020Updated the Linux makefiles for iASL and AcpiExec to place the generated 8021object files in the local directory so that there can be no collisions 8022between the shared files between them that are generated with different 8023options. 8024 8025Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. 8026Use 8027the #define __APPLE__ to enable this support. 8028 8029---------------------------------------- 803028 May 2010. Summary of changes for version 20100528: 8031 8032Note: The ACPI 4.0a specification was released on April 5, 2010 and is 8033available at www.acpi.info. This is primarily an errata release. 8034 80351) ACPI CA Core Subsystem: 8036 8037Undefined ACPI tables: We are looking for the definitions for the 8038following 8039ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 8040 8041Implemented support to enable multi-byte transfers for Embedded 8042Controller 8043(EC) operation regions. Previously, the maximum data size passed to the 8044EC 8045operation region handler was a single byte. There are often EC Fields 8046larger 8047than one byte that need to be transferred, and it is useful for the EC 8048driver 8049to lock these as a single transaction. This change enables single 8050transfers 8051larger than 8 bits. This effectively changes the access to the EC space 8052from 8053ByteAcc to AnyAcc, and will probably require changes to the host OS 8054Embedded 8055Controller driver to enable 16/32/64/256-bit transfers in addition to 8- 8056bit 8057transfers. Alexey Starikovskiy, Lin Ming 8058 8059Implemented a performance enhancement for namespace search and access. 8060This 8061change enhances the performance of namespace searches and walks by adding 8062a 8063backpointer to the parent in each namespace node. On large namespaces, 8064this 8065change can improve overall ACPI performance by up to 9X. Adding a pointer 8066to 8067each namespace node increases the overall size of the internal namespace 8068by 8069about 5%, since each namespace entry usually consists of both a namespace 8070node and an ACPI operand object. However, this is the first growth of the 8071namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 8072 8073Implemented a performance optimization that reduces the number of 8074namespace 8075walks. On control method exit, only walk the namespace if the method is 8076known 8077to have created namespace objects outside of its local scope. Previously, 8078the 8079entire namespace was traversed on each control method exit. This change 8080can 8081improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob 8082Moore. 8083 8084Added support to truncate I/O addresses to 16 bits for Windows 8085compatibility. 8086Some ASL code has been seen in the field that inadvertently has bits set 8087above bit 15. This feature is optional and is enabled if the BIOS 8088requests 8089any Windows OSI strings. It can also be enabled by the host OS. Matthew 8090Garrett, Bob Moore. 8091 8092Added support to limit the maximum time for the ASL Sleep() operator. To 8093prevent accidental deep sleeps, limit the maximum time that Sleep() will 8094actually sleep. Configurable, the default maximum is two seconds. ACPICA 8095bugzilla 854. 8096 8097Added run-time validation support for the _WDG and_WED Microsoft 8098predefined 8099methods. These objects are defined by "Windows Instrumentation", and are 8100not 8101part of the ACPI spec. ACPICA BZ 860. 8102 8103Expanded all statistic counters used during namespace and device 8104initialization from 16 to 32 bits in order to support very large 8105namespaces. 8106 8107Replaced all instances of %d in printf format specifiers with %u since 8108nearly 8109all integers in ACPICA are unsigned. 8110 8111Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly 8112returned 8113as AE_NO_HANDLER. 8114 8115Example Code and Data Size: These are the sizes for the OS-independent 8116acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8117debug version of the code includes the debug output trace mechanism and 8118has a 8119much larger code and data size. 8120 8121 Previous Release: 8122 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 8123 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 8124 Current Release: 8125 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 8126 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 8127 81282) iASL Compiler/Disassembler and Tools: 8129 8130iASL: Added compiler support for the _WDG and_WED Microsoft predefined 8131methods. These objects are defined by "Windows Instrumentation", and are 8132not 8133part of the ACPI spec. ACPICA BZ 860. 8134 8135AcpiExec: added option to disable the memory tracking mechanism. The -dt 8136option will disable the tracking mechanism, which improves performance 8137considerably. 8138 8139AcpiExec: Restructured the command line options into -d (disable) and -e 8140(enable) options. 8141 8142---------------------------------------- 814328 April 2010. Summary of changes for version 20100428: 8144 81451) ACPI CA Core Subsystem: 8146 8147Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 8148including FADT-based and GPE Block Devices, execute any _PRW methods in 8149the 8150new table, and process any _Lxx/_Exx GPE methods in the new table. Any 8151runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 8152immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 8153Devices. Provides compatibility with other ACPI implementations. Two new 8154files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob 8155Moore. 8156 8157Fixed a regression introduced in version 20100331 within the table 8158manager 8159where initial table loading could fail. This was introduced in the fix 8160for 8161AcpiReallocateRootTable. Also, renamed some of fields in the table 8162manager 8163data structures to clarify their meaning and use. 8164 8165Fixed a possible allocation overrun during internal object copy in 8166AcpiUtCopySimpleObject. The original code did not correctly handle the 8167case 8168where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 8169847. 8170 8171Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 8172possible access beyond end-of-allocation. Also, now fully validate 8173descriptor 8174(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 8175 8176Example Code and Data Size: These are the sizes for the OS-independent 8177acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8178debug version of the code includes the debug output trace mechanism and 8179has a 8180much larger code and data size. 8181 8182 Previous Release: 8183 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 8184 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 8185 Current Release: 8186 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 8187 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 8188 81892) iASL Compiler/Disassembler and Tools: 8190 8191iASL: Implemented Min/Max/Len/Gran validation for address resource 8192descriptors. This change implements validation for the address fields 8193that 8194are common to all address-type resource descriptors. These checks are 8195implemented: Checks for valid Min/Max, length within the Min/Max window, 8196valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as 8197per 8198table 6-40 in the ACPI 4.0a specification. Also split the large 8199aslrestype1.c 8200and aslrestype2.c files into five new files. ACPICA BZ 840. 8201 8202iASL: Added support for the _Wxx predefined names. This support was 8203missing 8204and these names were not recognized by the compiler as valid predefined 8205names. ACPICA BZ 851. 8206 8207iASL: Added an error for all predefined names that are defined to return 8208no 8209value and thus must be implemented as Control Methods. These include all 8210of 8211the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 8212names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 8213 8214iASL: Implemented the -ts option to emit hex AML data in ASL format, as 8215an 8216ASL Buffer. Allows ACPI tables to be easily included within ASL files, to 8217be 8218dynamically loaded via the Load() operator. Also cleaned up output for 8219the 8220- 8221ta and -tc options. ACPICA BZ 853. 8222 8223Tests: Added a new file with examples of extended iASL error checking. 8224Demonstrates the advanced error checking ability of the iASL compiler. 8225Available at tests/misc/badcode.asl. 8226 8227---------------------------------------- 822831 March 2010. Summary of changes for version 20100331: 8229 82301) ACPI CA Core Subsystem: 8231 8232Completed a major update for the GPE support in order to improve support 8233for 8234shared GPEs and to simplify both host OS and ACPICA code. Added a 8235reference 8236count mechanism to support shared GPEs that require multiple device 8237drivers. 8238Several external interfaces have changed. One external interface has been 8239removed. One new external interface was added. Most of the GPE external 8240interfaces now use the GPE spinlock instead of the events mutex (and the 8241Flags parameter for many GPE interfaces has been removed.) See the 8242updated 8243ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, 8244Rafael 8245Wysocki. ACPICA BZ 831. 8246 8247Changed: 8248 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 8249Removed: 8250 AcpiSetGpeType 8251New: 8252 AcpiSetGpe 8253 8254Implemented write support for DataTable operation regions. These regions 8255are 8256defined via the DataTableRegion() operator. Previously, only read support 8257was 8258implemented. The ACPI specification allows DataTableRegions to be 8259read/write, 8260however. 8261 8262Implemented a new subsystem option to force a copy of the DSDT to local 8263memory. Optionally copy the entire DSDT to local memory (instead of 8264simply 8265mapping it.) There are some (albeit very rare) BIOSs that corrupt or 8266replace 8267the original DSDT, creating the need for this option. Default is FALSE, 8268do 8269not copy the DSDT. 8270 8271Implemented detection of a corrupted or replaced DSDT. This change adds 8272support to detect a DSDT that has been corrupted and/or replaced from 8273outside 8274the OS (by firmware). This is typically catastrophic for the system, but 8275has 8276been seen on some machines. Once this problem has been detected, the DSDT 8277copy option can be enabled via system configuration. Lin Ming, Bob Moore. 8278 8279Fixed two problems with AcpiReallocateRootTable during the root table 8280copy. 8281When copying the root table to the new allocation, the length used was 8282incorrect. The new size was used instead of the current table size, 8283meaning 8284too much data was copied. Also, the count of available slots for ACPI 8285tables 8286was not set correctly. Alexey Starikovskiy, Bob Moore. 8287 8288Example Code and Data Size: These are the sizes for the OS-independent 8289acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8290debug version of the code includes the debug output trace mechanism and 8291has a 8292much larger code and data size. 8293 8294 Previous Release: 8295 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 8296 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 8297 Current Release: 8298 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 8299 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 8300 83012) iASL Compiler/Disassembler and Tools: 8302 8303iASL: Implement limited typechecking for values returned from predefined 8304control methods. The type of any returned static (unnamed) object is now 8305validated. For example, Return(1). ACPICA BZ 786. 8306 8307iASL: Fixed a predefined name object verification regression. Fixes a 8308problem 8309introduced in version 20100304. An error is incorrectly generated if a 8310predefined name is declared as a static named object with a value defined 8311using the keywords "Zero", "One", or "Ones". Lin Ming. 8312 8313iASL: Added Windows 7 support for the -g option (get local ACPI tables) 8314by 8315reducing the requested registry access rights. ACPICA BZ 842. 8316 8317Disassembler: fixed a possible fault when generating External() 8318statements. 8319Introduced in commit ae7d6fd: Properly handle externals with parent- 8320prefix 8321(carat). Fixes a string length allocation calculation. Lin Ming. 8322 8323---------------------------------------- 832404 March 2010. Summary of changes for version 20100304: 8325 83261) ACPI CA Core Subsystem: 8327 8328Fixed a possible problem with the AML Mutex handling function 8329AcpiExReleaseMutex where the function could fault under the very rare 8330condition when the interpreter has blocked, the interpreter lock is 8331released, 8332the interpreter is then reentered via the same thread, and attempts to 8333acquire an AML mutex that was previously acquired. FreeBSD report 140979. 8334Lin 8335Ming. 8336 8337Implemented additional configuration support for the AML "Debug Object". 8338Output from the debug object can now be enabled via a global variable, 8339AcpiGbl_EnableAmlDebugObject. This will assist with remote machine 8340debugging. 8341This debug output is now available in the release version of ACPICA 8342instead 8343of just the debug version. Also, the entire debug output module can now 8344be 8345configured out of the ACPICA build if desired. One new file added, 8346executer/exdebug.c. Lin Ming, Bob Moore. 8347 8348Added header support for the ACPI MCHI table (Management Controller Host 8349Interface Table). This table was added in ACPI 4.0, but the defining 8350document 8351has only recently become available. 8352 8353Standardized output of integer values for ACPICA warnings/errors. Always 8354use 83550x prefix for hex output, always use %u for unsigned integer decimal 8356output. 8357Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 8358400 8359invocations.) These invocations were converted from the original 8360ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 8361 8362Example Code and Data Size: These are the sizes for the OS-independent 8363acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8364debug version of the code includes the debug output trace mechanism and 8365has a 8366much larger code and data size. 8367 8368 Previous Release: 8369 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 8370 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 8371 Current Release: 8372 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 8373 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 8374 83752) iASL Compiler/Disassembler and Tools: 8376 8377iASL: Implemented typechecking support for static (non-control method) 8378predefined named objects that are declared with the Name() operator. For 8379example, the type of this object is now validated to be of type Integer: 8380Name(_BBN, 1). This change migrates the compiler to using the core 8381predefined 8382name table instead of maintaining a local version. Added a new file, 8383aslpredef.c. ACPICA BZ 832. 8384 8385Disassembler: Added support for the ACPI 4.0 MCHI table. 8386 8387---------------------------------------- 838821 January 2010. Summary of changes for version 20100121: 8389 83901) ACPI CA Core Subsystem: 8391 8392Added the 2010 copyright to all module headers and signons. This affects 8393virtually every file in the ACPICA core subsystem, the iASL compiler, the 8394tools/utilities, and the test suites. 8395 8396Implemented a change to the AcpiGetDevices interface to eliminate 8397unnecessary 8398invocations of the _STA method. In the case where a specific _HID is 8399requested, do not run _STA until a _HID match is found. This eliminates 8400potentially dozens of _STA calls during a search for a particular 8401device/HID, 8402which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 8403 8404Implemented an additional repair for predefined method return values. 8405Attempt 8406to repair unexpected NULL elements within returned Package objects. 8407Create 8408an 8409Integer of value zero, a NULL String, or a zero-length Buffer as 8410appropriate. 8411ACPICA BZ 818. Lin Ming, Bob Moore. 8412 8413Removed the obsolete ACPI_INTEGER data type. This type was introduced as 8414the 8415code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 8416(with 841764-bit AML integers). It is now obsolete and this change removes it from 8418the 8419ACPICA code base, replaced by UINT64. The original typedef has been 8420retained 8421for now for compatibility with existing device driver code. ACPICA BZ 8422824. 8423 8424Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field 8425in 8426the parse tree object. 8427 8428Added additional warning options for the gcc-4 generation. Updated the 8429source 8430accordingly. This includes some code restructuring to eliminate 8431unreachable 8432code, elimination of some gotos, elimination of unused return values, 8433some 8434additional casting, and removal of redundant declarations. 8435 8436Example Code and Data Size: These are the sizes for the OS-independent 8437acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8438debug version of the code includes the debug output trace mechanism and 8439has a 8440much larger code and data size. 8441 8442 Previous Release: 8443 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 8444 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 8445 Current Release: 8446 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 8447 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 8448 84492) iASL Compiler/Disassembler and Tools: 8450 8451No functional changes for this release. 8452 8453---------------------------------------- 845414 December 2009. Summary of changes for version 20091214: 8455 84561) ACPI CA Core Subsystem: 8457 8458Enhanced automatic data type conversions for predefined name repairs. 8459This 8460change expands the automatic repairs/conversions for predefined name 8461return 8462values to make Integers, Strings, and Buffers fully interchangeable. 8463Also, 8464a 8465Buffer can be converted to a Package of Integers if necessary. The 8466nsrepair.c 8467module was completely restructured. Lin Ming, Bob Moore. 8468 8469Implemented automatic removal of null package elements during predefined 8470name 8471repairs. This change will automatically remove embedded and trailing NULL 8472package elements from returned package objects that are defined to 8473contain 8474a 8475variable number of sub-packages. The driver is then presented with a 8476package 8477with no null elements to deal with. ACPICA BZ 819. 8478 8479Implemented a repair for the predefined _FDE and _GTM names. The expected 8480return value for both names is a Buffer of 5 DWORDs. This repair fixes 8481two 8482possible problems (both seen in the field), where a package of integers 8483is 8484returned, or a buffer of BYTEs is returned. With assistance from Jung-uk 8485Kim. 8486 8487Implemented additional module-level code support. This change will 8488properly 8489execute module-level code that is not at the root of the namespace (under 8490a 8491Device object, etc.). Now executes the code within the current scope 8492instead 8493of the root. ACPICA BZ 762. Lin Ming. 8494 8495Fixed possible mutex acquisition errors when running _REG methods. Fixes 8496a 8497problem where mutex errors can occur when running a _REG method that is 8498in 8499the same scope as a method-defined operation region or an operation 8500region 8501under a module-level IF block. This type of code is rare, so the problem 8502has 8503not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 8504 8505Fixed a possible memory leak during module-level code execution. An 8506object 8507could be leaked for each block of executed module-level code if the 8508interpreter slack mode is enabled This change deletes any implicitly 8509returned 8510object from the module-level code block. Lin Ming. 8511 8512Removed messages for successful predefined repair(s). The repair 8513mechanism 8514was considered too wordy. Now, messages are only unconditionally emitted 8515if 8516the return object cannot be repaired. Existing messages for successful 8517repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 8518827. 8519 8520Example Code and Data Size: These are the sizes for the OS-independent 8521acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8522debug version of the code includes the debug output trace mechanism and 8523has a 8524much larger code and data size. 8525 8526 Previous Release: 8527 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 8528 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 8529 Current Release: 8530 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 8531 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 8532 85332) iASL Compiler/Disassembler and Tools: 8534 8535iASL: Fixed a regression introduced in 20091112 where intermediate .SRC 8536files 8537were no longer automatically removed at the termination of the compile. 8538 8539acpiexec: Implemented the -f option to specify default region fill value. 8540This option specifies the value used to initialize buffers that simulate 8541operation regions. Default value is zero. Useful for debugging problems 8542that 8543depend on a specific initial value for a region or field. 8544 8545---------------------------------------- 854612 November 2009. Summary of changes for version 20091112: 8547 85481) ACPI CA Core Subsystem: 8549 8550Implemented a post-order callback to AcpiWalkNamespace. The existing 8551interface only has a pre-order callback. This change adds an additional 8552parameter for a post-order callback which will be more useful for bus 8553scans. 8554ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 8555 8556Modified the behavior of the operation region memory mapping cache for 8557SystemMemory. Ensure that the memory mappings created for operation 8558regions 8559do not cross 4K page boundaries. Crossing a page boundary while mapping 8560regions can cause kernel warnings on some hosts if the pages have 8561different 8562attributes. Such regions are probably BIOS bugs, and this is the 8563workaround. 8564Linux BZ 14445. Lin Ming. 8565 8566Implemented an automatic repair for predefined methods that must return 8567sorted lists. This change will repair (by sorting) packages returned by 8568_ALR, 8569_PSS, and _TSS. Drivers can now assume that the packages are correctly 8570sorted 8571and do not contain NULL package elements. Adds one new file, 8572namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 8573 8574Fixed a possible fault during predefined name validation if a return 8575Package 8576object contains NULL elements. Also adds a warning if a NULL element is 8577followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement 8578may 8579include repair or removal of all such NULL elements where possible. 8580 8581Implemented additional module-level executable AML code support. This 8582change 8583will execute module-level code that is not at the root of the namespace 8584(under a Device object, etc.) at table load time. Module-level executable 8585AML 8586code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 8587 8588Implemented a new internal function to create Integer objects. This 8589function 8590simplifies miscellaneous object creation code. ACPICA BZ 823. 8591 8592Reduced the severity of predefined repair messages, Warning to Info. 8593Since 8594the object was successfully repaired, a warning is too severe. Reduced to 8595an 8596info message for now. These messages may eventually be changed to debug- 8597only. 8598ACPICA BZ 812. 8599 8600Example Code and Data Size: These are the sizes for the OS-independent 8601acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8602debug version of the code includes the debug output trace mechanism and 8603has a 8604much larger code and data size. 8605 8606 Previous Release: 8607 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 8608 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 8609 Current Release: 8610 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 8611 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 8612 86132) iASL Compiler/Disassembler and Tools: 8614 8615iASL: Implemented Switch() with While(1) so that Break works correctly. 8616This 8617change correctly implements the Switch operator with a surrounding 8618While(1) 8619so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 8620 8621iASL: Added a message if a package initializer list is shorter than 8622package 8623length. Adds a new remark for a Package() declaration if an initializer 8624list 8625exists, but is shorter than the declared length of the package. Although 8626technically legal, this is probably a coding error and it is seen in the 8627field. ACPICA BZ 815. Lin Ming, Bob Moore. 8628 8629iASL: Fixed a problem where the compiler could fault after the maximum 8630number 8631of errors was reached (200). 8632 8633acpixtract: Fixed a possible warning for pointer cast if the compiler 8634warning 8635level set very high. 8636 8637---------------------------------------- 863813 October 2009. Summary of changes for version 20091013: 8639 86401) ACPI CA Core Subsystem: 8641 8642Fixed a problem where an Operation Region _REG method could be executed 8643more 8644than once. If a custom address space handler is installed by the host 8645before 8646the "initialize operation regions" phase of the ACPICA initialization, 8647any 8648_REG methods for that address space could be executed twice. This change 8649fixes the problem. ACPICA BZ 427. Lin Ming. 8650 8651Fixed a possible memory leak for the Scope() ASL operator. When the exact 8652invocation of "Scope(\)" is executed (change scope to root), one internal 8653operand object was leaked. Lin Ming. 8654 8655Implemented a run-time repair for the _MAT predefined method. If the _MAT 8656return value is defined as a Field object in the AML, and the field 8657size is less than or equal to the default width of an integer (32 or 865864),_MAT 8659can incorrectly return an Integer instead of a Buffer. ACPICA now 8660automatically repairs this problem. ACPICA BZ 810. 8661 8662Implemented a run-time repair for the _BIF and _BIX predefined methods. 8663The 8664"OEM Information" field is often incorrectly returned as an Integer with 8665value zero if the field is not supported by the platform. This is due to 8666an 8667ambiguity in the ACPI specification. The field should always be a string. 8668ACPICA now automatically repairs this problem by returning a NULL string 8669within the returned Package. ACPICA BZ 807. 8670 8671Example Code and Data Size: These are the sizes for the OS-independent 8672acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8673debug version of the code includes the debug output trace mechanism and 8674has a 8675much larger code and data size. 8676 8677 Previous Release: 8678 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 8679 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 8680 Current Release: 8681 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 8682 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 8683 86842) iASL Compiler/Disassembler and Tools: 8685 8686Disassembler: Fixed a problem where references to external symbols that 8687contained one or more parent-prefixes (carats) were not handled 8688correctly, 8689possibly causing a fault. ACPICA BZ 806. Lin Ming. 8690 8691Disassembler: Restructured the code so that all functions that handle 8692external symbols are in a single module. One new file is added, 8693common/dmextern.c. 8694 8695AML Debugger: Added a max count argument for the Batch command (which 8696executes multiple predefined methods within the namespace.) 8697 8698iASL: Updated the compiler documentation (User Reference.) Available at 8699http://www.acpica.org/documentation/. ACPICA BZ 750. 8700 8701AcpiXtract: Updated for Lint and other formatting changes. Close all open 8702files. 8703 8704---------------------------------------- 870503 September 2009. Summary of changes for version 20090903: 8706 87071) ACPI CA Core Subsystem: 8708 8709For Windows Vista compatibility, added the automatic execution of an _INI 8710method located at the namespace root (\_INI). This method is executed at 8711table load time. This support is in addition to the automatic execution 8712of 8713\_SB._INI. Lin Ming. 8714 8715Fixed a possible memory leak in the interpreter for AML package objects 8716if 8717the package initializer list is longer than the defined size of the 8718package. 8719This apparently can only happen if the BIOS changes the package size on 8720the 8721fly (seen in a _PSS object), as ASL compilers do not allow this. The 8722interpreter will truncate the package to the defined size (and issue an 8723error 8724message), but previously could leave the extra objects undeleted if they 8725were 8726pre-created during the argument processing (such is the case if the 8727package 8728consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 8729 8730Fixed a problem seen when a Buffer or String is stored to itself via ASL. 8731This has been reported in the field. Previously, ACPICA would zero out 8732the 8733buffer/string. Now, the operation is treated as a noop. Provides Windows 8734compatibility. ACPICA BZ 803. Lin Ming. 8735 8736Removed an extraneous error message for ASL constructs of the form 8737Store(LocalX,LocalX) when LocalX is uninitialized. These curious 8738statements 8739are seen in many BIOSs and are once again treated as NOOPs and no error 8740is 8741emitted when they are encountered. ACPICA BZ 785. 8742 8743Fixed an extraneous warning message if a _DSM reserved method returns a 8744Package object. _DSM can return any type of object, so validation on the 8745return type cannot be performed. ACPICA BZ 802. 8746 8747Example Code and Data Size: These are the sizes for the OS-independent 8748acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8749debug version of the code includes the debug output trace mechanism and 8750has a 8751much larger code and data size. 8752 8753 Previous Release: 8754 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 8755 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 8756 Current Release: 8757 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 8758 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 8759 87602) iASL Compiler/Disassembler and Tools: 8761 8762iASL: Fixed a problem with the use of the Alias operator and Resource 8763Templates. The correct alias is now constructed and no error is emitted. 8764ACPICA BZ 738. 8765 8766iASL: Implemented the -I option to specify additional search directories 8767for 8768include files. Allows multiple additional search paths for include files. 8769Directories are searched in the order specified on the command line 8770(after 8771the local directory is searched.) ACPICA BZ 800. 8772 8773iASL: Fixed a problem where the full pathname for include files was not 8774emitted for warnings/errors. This caused the IDE support to not work 8775properly. ACPICA BZ 765. 8776 8777iASL: Implemented the -@ option to specify a Windows-style response file 8778containing additional command line options. ACPICA BZ 801. 8779 8780AcpiExec: Added support to load multiple AML files simultaneously (such 8781as 8782a 8783DSDT and multiple SSDTs). Also added support for wildcards within the AML 8784pathname. These features allow all machine tables to be easily loaded and 8785debugged together. ACPICA BZ 804. 8786 8787Disassembler: Added missing support for disassembly of HEST table Error 8788Bank 8789subtables. 8790 8791---------------------------------------- 879230 July 2009. Summary of changes for version 20090730: 8793 8794The ACPI 4.0 implementation for ACPICA is complete with this release. 8795 87961) ACPI CA Core Subsystem: 8797 8798ACPI 4.0: Added header file support for all new and changed ACPI tables. 8799Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are 8800new 8801for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, 8802BERT, 8803EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. 8804There 8805have been some ACPI 4.0 changes to other existing tables. Split the large 8806actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 8807 8808ACPI 4.0: Implemented predefined name validation for all new names. There 8809are 881031 new names in ACPI 4.0. The predefined validation module was split into 8811two 8812files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 8813 8814Implemented support for so-called "module-level executable code". This is 8815executable AML code that exists outside of any control method and is 8816intended 8817to be executed at table load time. Although illegal since ACPI 2.0, this 8818type 8819of code still exists and is apparently still being created. Blocks of 8820this 8821code are now detected and executed as intended. Currently, the code 8822blocks 8823must exist under either an If, Else, or While construct; these are the 8824typical cases seen in the field. ACPICA BZ 762. Lin Ming. 8825 8826Implemented an automatic dynamic repair for predefined names that return 8827nested Package objects. This applies to predefined names that are defined 8828to 8829return a variable-length Package of sub-packages. If the number of sub- 8830packages is one, BIOS code is occasionally seen that creates a simple 8831single 8832package with no sub-packages. This code attempts to fix the problem by 8833wrapping a new package object around the existing package. These methods 8834can 8835be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA 8836BZ 8837790. 8838 8839Fixed a regression introduced in 20090625 for the AcpiGetDevices 8840interface. 8841The _HID/_CID matching was broken and no longer matched IDs correctly. 8842ACPICA 8843BZ 793. 8844 8845Fixed a problem with AcpiReset where the reset would silently fail if the 8846register was one of the protected I/O ports. AcpiReset now bypasses the 8847port 8848validation mechanism. This may eventually be driven into the 8849AcpiRead/Write 8850interfaces. 8851 8852Fixed a regression related to the recent update of the AcpiRead/Write 8853interfaces. A sleep/suspend could fail if the optional PM2 Control 8854register 8855does not exist during an attempt to write the Bus Master Arbitration bit. 8856(However, some hosts already delete the code that writes this bit, and 8857the 8858code may in fact be obsolete at this date.) ACPICA BZ 799. 8859 8860Fixed a problem where AcpiTerminate could fault if inadvertently called 8861twice 8862in succession. ACPICA BZ 795. 8863 8864Example Code and Data Size: These are the sizes for the OS-independent 8865acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8866debug version of the code includes the debug output trace mechanism and 8867has a 8868much larger code and data size. 8869 8870 Previous Release: 8871 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 8872 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 8873 Current Release: 8874 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 8875 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 8876 88772) iASL Compiler/Disassembler and Tools: 8878 8879ACPI 4.0: Implemented disassembler support for all new ACPI tables and 8880changes to existing tables. ACPICA BZ 775. 8881 8882---------------------------------------- 888325 June 2009. Summary of changes for version 20090625: 8884 8885The ACPI 4.0 Specification was released on June 16 and is available at 8886www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 8887continue for the next few releases. 8888 88891) ACPI CA Core Subsystem: 8890 8891ACPI 4.0: Implemented interpreter support for the IPMI operation region 8892address space. Includes support for bi-directional data buffers and an 8893IPMI 8894address space handler (to be installed by an IPMI device driver.) ACPICA 8895BZ 8896773. Lin Ming. 8897 8898ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. 8899Includes 8900support in both the header files and the disassembler. 8901 8902Completed a major update for the AcpiGetObjectInfo external interface. 8903Changes include: 8904 - Support for variable, unlimited length HID, UID, and CID strings. 8905 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, 8906etc.) 8907 - Call the _SxW power methods on behalf of a device object. 8908 - Determine if a device is a PCI root bridge. 8909 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 8910These changes will require an update to all callers of this interface. 8911See 8912the updated ACPICA Programmer Reference for details. One new source file 8913has 8914been added - utilities/utids.c. ACPICA BZ 368, 780. 8915 8916Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 8917transfers. The Value parameter has been extended from 32 bits to 64 bits 8918in 8919order to support new ACPI 4.0 tables. These changes will require an 8920update 8921to 8922all callers of these interfaces. See the ACPICA Programmer Reference for 8923details. ACPICA BZ 768. 8924 8925Fixed several problems with AcpiAttachData. The handler was not invoked 8926when 8927the host node was deleted. The data sub-object was not automatically 8928deleted 8929when the host node was deleted. The interface to the handler had an 8930unused 8931parameter, this was removed. ACPICA BZ 778. 8932 8933Enhanced the function that dumps ACPI table headers. All non-printable 8934characters in the string fields are now replaced with '?' (Signature, 8935OemId, 8936OemTableId, and CompilerId.) ACPI tables with non-printable characters in 8937these fields are occasionally seen in the field. ACPICA BZ 788. 8938 8939Fixed a problem with predefined method repair code where the code that 8940attempts to repair/convert an object of incorrect type is only executed 8941on 8942the first time the predefined method is called. The mechanism that 8943disables 8944warnings on subsequent calls was interfering with the repair mechanism. 8945ACPICA BZ 781. 8946 8947Fixed a possible memory leak in the predefined validation/repair code 8948when 8949a 8950buffer is automatically converted to an expected string object. 8951 8952Removed obsolete 16-bit files from the distribution and from the current 8953git 8954tree head. ACPICA BZ 776. 8955 8956Example Code and Data Size: These are the sizes for the OS-independent 8957acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8958debug version of the code includes the debug output trace mechanism and 8959has a 8960much larger code and data size. 8961 8962 Previous Release: 8963 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 8964 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 8965 Current Release: 8966 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 8967 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 8968 89692) iASL Compiler/Disassembler and Tools: 8970 8971ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 8972operation region keyword. ACPICA BZ 771, 772. Lin Ming. 8973 8974ACPI 4.0: iASL - implemented compile-time validation support for all new 8975predefined names and control methods (31 total). ACPICA BZ 769. 8976 8977---------------------------------------- 897821 May 2009. Summary of changes for version 20090521: 8979 89801) ACPI CA Core Subsystem: 8981 8982Disabled the preservation of the SCI enable bit in the PM1 control 8983register. 8984The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification 8985to 8986be 8987a "preserved" bit - "OSPM always preserves this bit position", section 89884.7.3.2.1. However, some machines fail if this bit is in fact preserved 8989because the bit needs to be explicitly set by the OS as a workaround. No 8990machines fail if the bit is not preserved. Therefore, ACPICA no longer 8991attempts to preserve this bit. 8992 8993Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 8994incorrectly formed _PRT package could cause a fault. Added validation to 8995ensure that each package element is actually a sub-package. 8996 8997Implemented a new interface to install or override a single control 8998method, 8999AcpiInstallMethod. This interface is useful when debugging in order to 9000repair 9001an existing method or to install a missing method without having to 9002override 9003the entire ACPI table. See the ACPICA Programmer Reference for use and 9004examples. Lin Ming, Bob Moore. 9005 9006Fixed several reference count issues with the DdbHandle object that is 9007created from a Load or LoadTable operator. Prevent premature deletion of 9008the 9009object. Also, mark the object as invalid once the table has been 9010unloaded. 9011This is needed because the handle itself may not be deleted after the 9012table 9013unload, depending on whether it has been stored in a named object by the 9014caller. Lin Ming. 9015 9016Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 9017mutexes of the same sync level are acquired but then not released in 9018strict 9019opposite order, the internally maintained Current Sync Level becomes 9020confused 9021and can cause subsequent execution errors. ACPICA BZ 471. 9022 9023Changed the allowable release order for ASL mutex objects. The ACPI 4.0 9024specification has been changed to make the SyncLevel for mutex objects 9025more 9026useful. When releasing a mutex, the SyncLevel of the mutex must now be 9027the 9028same as the current sync level. This makes more sense than the previous 9029rule 9030(SyncLevel less than or equal). This change updates the code to match the 9031specification. 9032 9033Fixed a problem with the local version of the AcpiOsPurgeCache function. 9034The 9035(local) cache must be locked during all cache object deletions. Andrew 9036Baumann. 9037 9038Updated the Load operator to use operation region interfaces. This 9039replaces 9040direct memory mapping with region access calls. Now, all region accesses 9041go 9042through the installed region handler as they should. 9043 9044Simplified and optimized the NsGetNextNode function. Reduced parameter 9045count 9046and reduced code for this frequently used function. 9047 9048Example Code and Data Size: These are the sizes for the OS-independent 9049acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9050debug version of the code includes the debug output trace mechanism and 9051has a 9052much larger code and data size. 9053 9054 Previous Release: 9055 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 9056 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 9057 Current Release: 9058 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 9059 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 9060 90612) iASL Compiler/Disassembler and Tools: 9062 9063Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some 9064problems 9065with sub-table disassembly and handling invalid sub-tables. Attempt 9066recovery 9067after an invalid sub-table ID. 9068 9069---------------------------------------- 907022 April 2009. Summary of changes for version 20090422: 9071 90721) ACPI CA Core Subsystem: 9073 9074Fixed a compatibility issue with the recently released I/O port 9075protection 9076mechanism. For windows compatibility, 1) On a port protection violation, 9077simply ignore the request and do not return an exception (allow the 9078control 9079method to continue execution.) 2) If only part of the request overlaps a 9080protected port, read/write the individual ports that are not protected. 9081Linux 9082BZ 13036. Lin Ming 9083 9084Enhanced the execution of the ASL/AML BreakPoint operator so that it 9085actually 9086breaks into the AML debugger if the debugger is present. This matches the 9087ACPI-defined behavior. 9088 9089Fixed several possible warnings related to the use of the configurable 9090ACPI_THREAD_ID. This type can now be configured as either an integer or a 9091pointer with no warnings. Also fixes several warnings in printf-like 9092statements for the 64-bit build when the type is configured as a pointer. 9093ACPICA BZ 766, 767. 9094 9095Fixed a number of possible warnings when compiling with gcc 4+ (depending 9096on 9097warning options.) Examples include printf formats, aliasing, unused 9098globals, 9099missing prototypes, missing switch default statements, use of non-ANSI 9100library functions, use of non-ANSI constructs. See generate/unix/Makefile 9101for 9102a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 9103 9104Example Code and Data Size: These are the sizes for the OS-independent 9105acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9106debug version of the code includes the debug output trace mechanism and 9107has a 9108much larger code and data size. 9109 9110 Previous Release: 9111 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 9112 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 9113 Current Release: 9114 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 9115 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 9116 91172) iASL Compiler/Disassembler and Tools: 9118 9119iASL: Fixed a generation warning from Bison 2.3 and fixed several 9120warnings 9121on 9122the 64-bit build. 9123 9124iASL: Fixed a problem where the Unix/Linux versions of the compiler could 9125not 9126correctly digest Windows/DOS formatted files (with CR/LF). 9127 9128iASL: Added a new option for "quiet mode" (-va) that produces only the 9129compilation summary, not individual errors and warnings. Useful for large 9130batch compilations. 9131 9132AcpiExec: Implemented a new option (-z) to enable a forced 9133semaphore/mutex 9134timeout that can be used to detect hang conditions during execution of 9135AML 9136code (includes both internal semaphores and AML-defined mutexes and 9137events.) 9138 9139Added new makefiles for the generation of acpica in a generic unix-like 9140environment. These makefiles are intended to generate the acpica tools 9141and 9142utilities from the original acpica git source tree structure. 9143 9144Test Suites: Updated and cleaned up the documentation files. Updated the 9145copyrights to 2009, affecting all source files. Use the new version of 9146iASL 9147with quiet mode. Increased the number of available semaphores in the 9148Windows 9149OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, 9150added 9151an alternate implementation of the semaphore timeout to allow aslts to 9152execute fully on Cygwin. 9153 9154---------------------------------------- 915520 March 2009. Summary of changes for version 20090320: 9156 91571) ACPI CA Core Subsystem: 9158 9159Fixed a possible race condition between AcpiWalkNamespace and dynamic 9160table 9161unloads. Added a reader/writer locking mechanism to allow multiple 9162concurrent 9163namespace walks (readers), but block a dynamic table unload until it can 9164gain 9165exclusive write access to the namespace. This fixes a problem where a 9166table 9167unload could (possibly catastrophically) delete the portion of the 9168namespace 9169that is currently being examined by a walk. Adds a new file, utlock.c, 9170that 9171implements the reader/writer lock mechanism. ACPICA BZ 749. 9172 9173Fixed a regression introduced in version 20090220 where a change to the 9174FADT 9175handling could cause the ACPICA subsystem to access non-existent I/O 9176ports. 9177 9178Modified the handling of FADT register and table (FACS/DSDT) addresses. 9179The 9180FADT can contain both 32-bit and 64-bit versions of these addresses. 9181Previously, the 64-bit versions were favored, meaning that if both 32 and 918264 9183versions were valid, but not equal, the 64-bit version was used. This was 9184found to cause some machines to fail. Now, in this case, the 32-bit 9185version 9186is used instead. This now matches the Windows behavior. 9187 9188Implemented a new mechanism to protect certain I/O ports. Provides 9189Microsoft 9190compatibility and protects the standard PC I/O ports from access via AML 9191code. Adds a new file, hwvalid.c 9192 9193Fixed a possible extraneous warning message from the FADT support. The 9194message warns of a 32/64 length mismatch between the legacy and GAS 9195definitions for a register. 9196 9197Removed the obsolete AcpiOsValidateAddress OSL interface. This interface 9198is 9199made obsolete by the port protection mechanism above. It was previously 9200used 9201to validate the entire address range of an operation region, which could 9202be 9203incorrect if the range included illegal ports, but fields within the 9204operation region did not actually access those ports. Validation is now 9205performed on a per-field basis instead of the entire region. 9206 9207Modified the handling of the PM1 Status Register ignored bit (bit 11.) 9208Ignored bits must be "preserved" according to the ACPI spec. Usually, 9209this 9210means a read/modify/write when writing to the register. However, for 9211status 9212registers, writing a one means clear the event. Writing a zero means 9213preserve 9214the event (do not clear.) This behavior is clarified in the ACPI 4.0 9215spec, 9216and the ACPICA code now simply always writes a zero to the ignored bit. 9217 9218Modified the handling of ignored bits for the PM1 A/B Control Registers. 9219As 9220per the ACPI specification, for the control registers, preserve 9221(read/modify/write) all bits that are defined as either reserved or 9222ignored. 9223 9224Updated the handling of write-only bits in the PM1 A/B Control Registers. 9225When reading the register, zero the write-only bits as per the ACPI spec. 9226ACPICA BZ 443. Lin Ming. 9227 9228Removed "Linux" from the list of supported _OSI strings. Linux no longer 9229wants to reply true to this request. The Windows strings are the only 9230paths 9231through the AML that are tested and known to work properly. 9232 9233 Previous Release: 9234 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 9235 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 9236 Current Release: 9237 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 9238 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 9239 92402) iASL Compiler/Disassembler and Tools: 9241 9242Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c 9243and 9244aetables.c 9245 9246---------------------------------------- 924720 February 2009. Summary of changes for version 20090220: 9248 92491) ACPI CA Core Subsystem: 9250 9251Optimized the ACPI register locking. Removed locking for reads from the 9252ACPI 9253bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock 9254is 9255not required when reading the single-bit registers. The 9256AcpiGetRegisterUnlocked function is no longer needed and has been 9257removed. 9258This will improve performance for reads on these registers. ACPICA BZ 9259760. 9260 9261Fixed the parameter validation for AcpiRead/Write. Now return 9262AE_BAD_PARAMETER if the input register pointer is null, and 9263AE_BAD_ADDRESS 9264if 9265the register has an address of zero. Previously, these cases simply 9266returned 9267AE_OK. For optional registers such as PM1B status/enable/control, the 9268caller 9269should check for a valid register address before calling. ACPICA BZ 748. 9270 9271Renamed the external ACPI bit register access functions. Renamed 9272AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 9273functions. The new names are AcpiReadBitRegister and 9274AcpiWriteBitRegister. 9275Also, restructured the code for these functions by simplifying the code 9276path 9277and condensing duplicate code to reduce code size. 9278 9279Added new functions to transparently handle the possibly split PM1 A/B 9280registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two 9281functions 9282now handle the split registers for PM1 Status, Enable, and Control. 9283ACPICA 9284BZ 9285746. 9286 9287Added a function to handle the PM1 control registers, 9288AcpiHwWritePm1Control. 9289This function writes both of the PM1 control registers (A/B). These 9290registers 9291are different than the PM1 A/B status and enable registers in that 9292different 9293values can be written to the A/B registers. Most notably, the SLP_TYP 9294bits 9295can be different, as per the values returned from the _Sx predefined 9296methods. 9297 9298Removed an extra register write within AcpiHwClearAcpiStatus. This 9299function 9300was writing an optional PM1B status register twice. The existing call to 9301the 9302low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 9303A/B 9304register. ACPICA BZ 751. 9305 9306Split out the PM1 Status registers from the FADT. Added new globals for 9307these 9308registers (A/B), similar to the way the PM1 Enable registers are handled. 9309Instead of overloading the FADT Event Register blocks. This makes the 9310code 9311clearer and less prone to error. 9312 9313Fixed the warning message for when the platform contains too many ACPI 9314tables 9315for the default size of the global root table data structure. The 9316calculation 9317for the truncation value was incorrect. 9318 9319Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 9320obsolete macro, since it is now a simple reference to ->common.type. 9321There 9322were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 9323 9324Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 9325TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 9326simply SLEEP_TYPE. ACPICA BZ 754. 9327 9328Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 9329function is only needed on 64-bit host operating systems and is thus not 9330included for 32-bit hosts. 9331 9332Debug output: print the input and result for invocations of the _OSI 9333reserved 9334control method via the ACPI_LV_INFO debug level. Also, reduced some of 9335the 9336verbosity of this debug level. Len Brown. 9337 9338Example Code and Data Size: These are the sizes for the OS-independent 9339acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9340debug version of the code includes the debug output trace mechanism and 9341has a 9342much larger code and data size. 9343 9344 Previous Release: 9345 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 9346 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 9347 Current Release: 9348 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 9349 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 9350 93512) iASL Compiler/Disassembler and Tools: 9352 9353Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 9354various legal performance profiles. 9355 9356---------------------------------------- 935723 January 2009. Summary of changes for version 20090123: 9358 93591) ACPI CA Core Subsystem: 9360 9361Added the 2009 copyright to all module headers and signons. This affects 9362virtually every file in the ACPICA core subsystem, the iASL compiler, and 9363the tools/utilities. 9364 9365Implemented a change to allow the host to override any ACPI table, 9366including 9367dynamically loaded tables. Previously, only the DSDT could be replaced by 9368the 9369host. With this change, the AcpiOsTableOverride interface is called for 9370each 9371table found in the RSDT/XSDT during ACPICA initialization, and also 9372whenever 9373a table is dynamically loaded via the AML Load operator. 9374 9375Updated FADT flag definitions, especially the Boot Architecture flags. 9376 9377Debugger: For the Find command, automatically pad the input ACPI name 9378with 9379underscores if the name is shorter than 4 characters. This enables a 9380match 9381with the actual namespace entry which is itself padded with underscores. 9382 9383Example Code and Data Size: These are the sizes for the OS-independent 9384acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9385debug version of the code includes the debug output trace mechanism and 9386has a 9387much larger code and data size. 9388 9389 Previous Release: 9390 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 9391 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 9392 Current Release: 9393 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 9394 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 9395 93962) iASL Compiler/Disassembler and Tools: 9397 9398Fix build error under Bison-2.4. 9399 9400Disassembler: Enhanced FADT support. Added decoding of the Boot 9401Architecture 9402flags. Now decode all flags, regardless of the FADT version. Flag output 9403includes the FADT version which first defined each flag. 9404 9405The iASL -g option now dumps the RSDT to a file (in addition to the FADT 9406and 9407DSDT). Windows only. 9408 9409---------------------------------------- 941004 December 2008. Summary of changes for version 20081204: 9411 94121) ACPI CA Core Subsystem: 9413 9414The ACPICA Programmer Reference has been completely updated and revamped 9415for 9416this release. This includes updates to the external interfaces, OSL 9417interfaces, the overview sections, and the debugger reference. 9418 9419Several new ACPICA interfaces have been implemented and documented in the 9420programmer reference: 9421AcpiReset - Writes the reset value to the FADT-defined reset register. 9422AcpiDisableAllGpes - Disable all available GPEs. 9423AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 9424AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 9425AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 9426AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 9427AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 9428 9429Most of the public ACPI hardware-related interfaces have been moved to a 9430new 9431file, components/hardware/hwxface.c 9432 9433Enhanced the FADT parsing and low-level ACPI register access: The ACPI 9434register lengths within the FADT are now used, and the low level ACPI 9435register access no longer hardcodes the ACPI register lengths. Given that 9436there may be some risk in actually trusting the FADT register lengths, a 9437run- 9438time option was added to fall back to the default hardcoded lengths if 9439the 9440FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 9441option is set to true for now, and a warning is issued if a suspicious 9442FADT 9443register length is overridden with the default value. 9444 9445Fixed a reference count issue in NsRepairObject. This problem was 9446introduced 9447in version 20081031 as part of a fix to repair Buffer objects within 9448Packages. Lin Ming. 9449 9450Added semaphore support to the Linux/Unix application OS-services layer 9451(OSL). ACPICA BZ 448. Lin Ming. 9452 9453Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes 9454will 9455be implemented in the OSL, or will binary semaphores be used instead. 9456 9457Example Code and Data Size: These are the sizes for the OS-independent 9458acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9459debug version of the code includes the debug output trace mechanism and 9460has a 9461much larger code and data size. 9462 9463 Previous Release: 9464 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 9465 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 9466 Current Release: 9467 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 9468 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 9469 94702) iASL Compiler/Disassembler and Tools: 9471 9472iASL: Completed the '-e' option to include additional ACPI tables in 9473order 9474to 9475aid with disassembly and External statement generation. ACPICA BZ 742. 9476Lin 9477Ming. 9478 9479iASL: Removed the "named object in while loop" error. The compiler cannot 9480determine how many times a loop will execute. ACPICA BZ 730. 9481 9482Disassembler: Implemented support for FADT revision 2 (MS extension). 9483ACPICA 9484BZ 743. 9485 9486Disassembler: Updates for several ACPI data tables (HEST, EINJ, and 9487MCFG). 9488 9489---------------------------------------- 949031 October 2008. Summary of changes for version 20081031: 9491 94921) ACPI CA Core Subsystem: 9493 9494Restructured the ACPICA header files into public/private. acpi.h now 9495includes 9496only the "public" acpica headers. All other acpica headers are "private" 9497and 9498should not be included by acpica users. One new file, accommon.h is used 9499to 9500include the commonly used private headers for acpica code generation. 9501Future 9502plans include moving all private headers to a new subdirectory. 9503 9504Implemented an automatic Buffer->String return value conversion for 9505predefined ACPI methods. For these methods (such as _BIF), added 9506automatic 9507conversion for return objects that are required to be a String, but a 9508Buffer 9509was found instead. This can happen when reading string battery data from 9510an 9511operation region, because it used to be difficult to convert the data 9512from 9513buffer to string from within the ASL. Ensures that the host OS is 9514provided 9515with a valid null-terminated string. Linux BZ 11822. 9516 9517Updated the FACS waking vector interfaces. Split 9518AcpiSetFirmwareWakingVector 9519into two: one for the 32-bit vector, another for the 64-bit vector. This 9520is 9521required because the host OS must setup the wake much differently for 9522each 9523vector (real vs. protected mode, etc.) and the interface itself should 9524not 9525be 9526deciding which vector to use. Also, eliminated the 9527GetFirmwareWakingVector 9528interface, as it served no purpose (only the firmware reads the vector, 9529OS 9530only writes the vector.) ACPICA BZ 731. 9531 9532Implemented a mechanism to escape infinite AML While() loops. Added a 9533loop 9534counter to force exit from AML While loops if the count becomes too 9535large. 9536This can occur in poorly written AML when the hardware does not respond 9537within a while loop and the loop does not implement a timeout. The 9538maximum 9539loop count is configurable. A new exception code is returned when a loop 9540is 9541broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 9542 9543Optimized the execution of AML While loops. Previously, a control state 9544object was allocated and freed for each execution of the loop. The 9545optimization is to simply reuse the control state for each iteration. 9546This 9547speeds up the raw loop execution time by about 5%. 9548 9549Enhanced the implicit return mechanism. For Windows compatibility, return 9550an 9551implicit integer of value zero for methods that contain no executable 9552code. 9553Such methods are seen in the field as stubs (presumably), and can cause 9554drivers to fail if they expect a return value. Lin Ming. 9555 9556Allow multiple backslashes as root prefixes in namepaths. In a fully 9557qualified namepath, allow multiple backslash prefixes. This can happen 9558(and 9559is seen in the field) because of the use of a double-backslash in strings 9560(since backslash is the escape character) causing confusion. ACPICA BZ 9561739 9562Lin Ming. 9563 9564Emit a warning if two different FACS or DSDT tables are discovered in the 9565FADT. Checks if there are two valid but different addresses for the FACS 9566and 9567DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 9568 9569Consolidated the method argument count validation code. Merged the code 9570that 9571validates control method argument counts into the predefined validation 9572module. Eliminates possible multiple warnings for incorrect argument 9573counts. 9574 9575Implemented ACPICA example code. Includes code for ACPICA initialization, 9576handler installation, and calling a control method. Available at 9577source/tools/examples. 9578 9579Added a global pointer for FACS table to simplify internal FACS access. 9580Use 9581the global pointer instead of using AcpiGetTableByIndex for each FACS 9582access. 9583This simplifies the code for the Global Lock and the Firmware Waking 9584Vector(s). 9585 9586Example Code and Data Size: These are the sizes for the OS-independent 9587acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9588debug version of the code includes the debug output trace mechanism and 9589has a 9590much larger code and data size. 9591 9592 Previous Release: 9593 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 9594 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 9595 Current Release: 9596 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 9597 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 9598 95992) iASL Compiler/Disassembler and Tools: 9600 9601iASL: Improved disassembly of external method calls. Added the -e option 9602to 9603allow the inclusion of additional ACPI tables to help with the 9604disassembly 9605of 9606method invocations and the generation of external declarations during the 9607disassembly. Certain external method invocations cannot be disassembled 9608properly without the actual declaration of the method. Use the -e option 9609to 9610include the table where the external method(s) are actually declared. 9611Most 9612useful for disassembling SSDTs that make method calls back to the master 9613DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl 9614-d 9615-e dsdt.aml ssdt1.aml 9616 9617iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 9618problem where the use of an alias within a namepath would result in a not 9619found error or cause the compiler to fault. Also now allows forward 9620references from the Alias operator itself. ACPICA BZ 738. 9621 9622---------------------------------------- 962326 September 2008. Summary of changes for version 20080926: 9624 96251) ACPI CA Core Subsystem: 9626 9627Designed and implemented a mechanism to validate predefined ACPI methods 9628and 9629objects. This code validates the predefined ACPI objects (objects whose 9630names 9631start with underscore) that appear in the namespace, at the time they are 9632evaluated. The argument count and the type of the returned object are 9633validated against the ACPI specification. The purpose of this validation 9634is 9635to detect problems with the BIOS-implemented predefined ACPI objects 9636before 9637the results are returned to the ACPI-related drivers. Future enhancements 9638may 9639include actual repair of incorrect return objects where possible. Two new 9640files are nspredef.c and acpredef.h. 9641 9642Fixed a fault in the AML parser if a memory allocation fails during the 9643Op 9644completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 9645 9646Fixed an issue with implicit return compatibility. This change improves 9647the 9648implicit return mechanism to be more compatible with the MS interpreter. 9649Lin 9650Ming, ACPICA BZ 349. 9651 9652Implemented support for zero-length buffer-to-string conversions. Allow 9653zero 9654length strings during interpreter buffer-to-string conversions. For 9655example, 9656during the ToDecimalString and ToHexString operators, as well as implicit 9657conversions. Fiodor Suietov, ACPICA BZ 585. 9658 9659Fixed two possible memory leaks in the error exit paths of 9660AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions 9661are 9662similar in that they use a stack of state objects in order to eliminate 9663recursion. The stack must be fully unwound and deallocated if an error 9664occurs. Lin Ming. ACPICA BZ 383. 9665 9666Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the 9667global 9668ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 9669Moore ACPICA BZ 442. 9670 9671Removed the obsolete version number in module headers. Removed the 9672"$Revision" number that appeared in each module header. This version 9673number 9674was useful under SourceSafe and CVS, but has no meaning under git. It is 9675not 9676only incorrect, it could also be misleading. 9677 9678Example Code and Data Size: These are the sizes for the OS-independent 9679acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9680debug version of the code includes the debug output trace mechanism and 9681has a 9682much larger code and data size. 9683 9684 Previous Release: 9685 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 9686 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 9687 Current Release: 9688 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 9689 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 9690 9691---------------------------------------- 969229 August 2008. Summary of changes for version 20080829: 9693 96941) ACPI CA Core Subsystem: 9695 9696Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 9697Reference. Changes include the elimination of cheating on the Object 9698field 9699for the DdbHandle subtype, addition of a reference class field to 9700differentiate the various reference types (instead of an AML opcode), and 9701the 9702cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 9703 9704Reduce an error to a warning for an incorrect method argument count. 9705Previously aborted with an error if too few arguments were passed to a 9706control method via the external ACPICA interface. Now issue a warning 9707instead 9708and continue. Handles the case where the method inadvertently declares 9709too 9710many arguments, but does not actually use the extra ones. Applies mainly 9711to 9712the predefined methods. Lin Ming. Linux BZ 11032. 9713 9714Disallow the evaluation of named object types with no intrinsic value. 9715Return 9716AE_TYPE for objects that have no value and therefore evaluation is 9717undefined: 9718Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation 9719of 9720these types were allowed, but an exception would be generated at some 9721point 9722during the evaluation. Now, the error is generated up front. 9723 9724Fixed a possible memory leak in the AcpiNsGetExternalPathname function 9725(nsnames.c). Fixes a leak in the error exit path. 9726 9727Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These 9728debug 9729levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and 9730ACPI_EXCEPTION 9731interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 9732ACPI_LV_EVENTS. 9733 9734Removed obsolete and/or unused exception codes from the acexcep.h header. 9735There is the possibility that certain device drivers may be affected if 9736they 9737use any of these exceptions. 9738 9739The ACPICA documentation has been added to the public git source tree, 9740under 9741acpica/documents. Included are the ACPICA programmer reference, the iASL 9742compiler reference, and the changes.txt release logfile. 9743 9744Example Code and Data Size: These are the sizes for the OS-independent 9745acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9746debug version of the code includes the debug output trace mechanism and 9747has a 9748much larger code and data size. 9749 9750 Previous Release: 9751 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 9752 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 9753 Current Release: 9754 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 9755 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 9756 97572) iASL Compiler/Disassembler and Tools: 9758 9759Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 9760defines _SCP with 3 arguments. Previous versions defined it with only 1 9761argument. iASL now allows both definitions. 9762 9763iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for 9764zero- 9765length subtables when disassembling ACPI tables. Also fixed a couple of 9766errors where a full 16-bit table type field was not extracted from the 9767input 9768properly. 9769 9770acpisrc: Improve comment counting mechanism for generating source code 9771statistics. Count first and last lines of multi-line comments as 9772whitespace, 9773not comment lines. Handle Linux legal header in addition to standard 9774acpica 9775header. 9776 9777---------------------------------------- 9778 977929 July 2008. Summary of changes for version 20080729: 9780 97811) ACPI CA Core Subsystem: 9782 9783Fix a possible deadlock in the GPE dispatch. Remove call to 9784AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will 9785attempt 9786to acquire the GPE lock but can deadlock since the GPE lock is already 9787held 9788at dispatch time. This code was introduced in version 20060831 as a 9789response 9790to Linux BZ 6881 and has since been removed from Linux. 9791 9792Add a function to dereference returned reference objects. Examines the 9793return 9794object from a call to AcpiEvaluateObject. Any Index or RefOf references 9795are 9796automatically dereferenced in an attempt to return something useful 9797(these 9798reference types cannot be converted into an external ACPI_OBJECT.) 9799Provides 9800MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 9801 9802x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 9803subtables for the MADT and one new subtable for the SRAT. Includes 9804disassembler and AcpiSrc support. Data from the Intel 64 Architecture 9805x2APIC 9806Specification, June 2008. 9807 9808Additional error checking for pathname utilities. Add error check after 9809all 9810calls to AcpiNsGetPathnameLength. Add status return from 9811AcpiNsBuildExternalPath and check after all calls. Add parameter 9812validation 9813to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 9814 9815Return status from the global init function AcpiUtGlobalInitialize. This 9816is 9817used by both the kernel subsystem and the utilities such as iASL 9818compiler. 9819The function could possibly fail when the caches are initialized. Yang 9820Yi. 9821 9822Add a function to decode reference object types to strings. Created for 9823improved error messages. 9824 9825Improve object conversion error messages. Better error messages during 9826object 9827conversion from internal to the external ACPI_OBJECT. Used for external 9828calls 9829to AcpiEvaluateObject. 9830 9831Example Code and Data Size: These are the sizes for the OS-independent 9832acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9833debug version of the code includes the debug output trace mechanism and 9834has a 9835much larger code and data size. 9836 9837 Previous Release: 9838 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 9839 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 9840 Current Release: 9841 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 9842 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 9843 98442) iASL Compiler/Disassembler and Tools: 9845 9846Debugger: fix a possible hang when evaluating non-methods. Fixes a 9847problem 9848introduced in version 20080701. If the object being evaluated (via 9849execute 9850command) is not a method, the debugger can hang while trying to obtain 9851non- 9852existent parameters. 9853 9854iASL: relax error for using reserved "_T_x" identifiers. These names can 9855appear in a disassembled ASL file if they were emitted by the original 9856compiler. Instead of issuing an error or warning and forcing the user to 9857manually change these names, issue a remark instead. 9858 9859iASL: error if named object created in while loop. Emit an error if any 9860named 9861object is created within a While loop. If allowed, this code will 9862generate 9863a 9864run-time error on the second iteration of the loop when an attempt is 9865made 9866to 9867create the same named object twice. ACPICA bugzilla 730. 9868 9869iASL: Support absolute pathnames for include files. Add support for 9870absolute 9871pathnames within the Include operator. previously, only relative 9872pathnames 9873were supported. 9874 9875iASL: Enforce minimum 1 interrupt in interrupt macro and Resource 9876Descriptor. 9877The ACPI spec requires one interrupt minimum. BZ 423 9878 9879iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 9880Handles the case for the Interrupt Resource Descriptor where 9881the ResourceSource argument is omitted but ResourceSourceIndex 9882is present. Now leave room for the Index. BZ 426 9883 9884iASL: Prevent error message if CondRefOf target does not exist. Fixes 9885cases 9886where an error message is emitted if the target does not exist. BZ 516 9887 9888iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 9889(get ACPI tables on Windows). This was apparently broken in version 989020070919. 9891 9892AcpiXtract: Handle EOF while extracting data. Correctly handle the case 9893where 9894the EOF happens immediately after the last table in the input file. Print 9895completion message. Previously, no message was displayed in this case. 9896 9897---------------------------------------- 989801 July 2008. Summary of changes for version 20080701: 9899 99000) Git source tree / acpica.org 9901 9902Fixed a problem where a git-clone from http would not transfer the entire 9903source tree. 9904 99051) ACPI CA Core Subsystem: 9906 9907Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 9908enable bit. Now performs a read-change-write of the enable register 9909instead 9910of simply writing out the cached enable mask. This will prevent 9911inadvertent 9912enabling of GPEs if a rogue GPE is received during initialization (before 9913GPE 9914handlers are installed.) 9915 9916Implemented a copy for dynamically loaded tables. Previously, dynamically 9917loaded tables were simply mapped - but on some machines this memory is 9918corrupted after suspend. Now copy the table to a local buffer. For the 9919OpRegion case, added checksum verify. Use the table length from the table 9920header, not the region length. For the Buffer case, use the table length 9921also. Dennis Noordsij, Bob Moore. BZ 10734 9922 9923Fixed a problem where the same ACPI table could not be dynamically loaded 9924and 9925unloaded more than once. Without this change, a table cannot be loaded 9926again 9927once it has been loaded/unloaded one time. The current mechanism does not 9928unregister a table upon an unload. During a load, if the same table is 9929found, 9930this no longer returns an exception. BZ 722 9931 9932Fixed a problem where the wrong descriptor length was calculated for the 9933EndTag descriptor in 64-bit mode. The "minimal" descriptors such as 9934EndTag 9935are calculated as 12 bytes long, but the actual length in the internal 9936descriptor is 16 because of the round-up to 8 on the 64-bit build. 9937Reported 9938by Linn Crosetto. BZ 728 9939 9940Fixed a possible memory leak in the Unload operator. The DdbHandle 9941returned 9942by Load() did not have its reference count decremented during unload, 9943leading 9944to a memory leak. Lin Ming. BZ 727 9945 9946Fixed a possible memory leak when deleting thermal/processor objects. Any 9947associated notify handlers (and objects) were not being deleted. Fiodor 9948Suietov. BZ 506 9949 9950Fixed the ordering of the ASCII names in the global mutex table to match 9951the 9952actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug 9953only. 9954Vegard Nossum. BZ 726 9955 9956Enhanced the AcpiGetObjectInfo interface to return the number of required 9957arguments if the object is a control method. Added this call to the 9958debugger 9959so the proper number of default arguments are passed to a method. This 9960prevents a warning when executing methods from AcpiExec. 9961 9962Added a check for an invalid handle in AcpiGetObjectInfo. Return 9963AE_BAD_PARAMETER if input handle is invalid. BZ 474 9964 9965Fixed an extraneous warning from exconfig.c on the 64-bit build. 9966 9967Example Code and Data Size: These are the sizes for the OS-independent 9968acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9969debug version of the code includes the debug output trace mechanism and 9970has a 9971much larger code and data size. 9972 9973 Previous Release: 9974 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 9975 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 9976 Current Release: 9977 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 9978 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 9979 99802) iASL Compiler/Disassembler and Tools: 9981 9982iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 9983resource descriptor names. 9984 9985iASL: Detect invalid ASCII characters in input (windows version). Removed 9986the 9987"-CF" flag from the flex compile, enables correct detection of non-ASCII 9988characters in the input. BZ 441 9989 9990iASL: Eliminate warning when result of LoadTable is not used. Eliminate 9991the 9992"result of operation not used" warning when the DDB handle returned from 9993LoadTable is not used. The warning is not needed. BZ 590 9994 9995AcpiExec: Add support for dynamic table load/unload. Now calls _CFG 9996method 9997to 9998pass address of table to the AML. Added option to disable OpRegion 9999simulation 10000to allow creation of an OpRegion with a real address that was passed to 10001_CFG. 10002All of this allows testing of the Load and Unload operators from 10003AcpiExec. 10004 10005Debugger: update tables command for unloaded tables. Handle unloaded 10006tables 10007and use the standard table header output routine. 10008 10009---------------------------------------- 1001009 June 2008. Summary of changes for version 20080609: 10011 100121) ACPI CA Core Subsystem: 10013 10014Implemented a workaround for reversed _PRT entries. A significant number 10015of 10016BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 10017change dynamically detects and repairs this problem. Provides 10018compatibility 10019with MS ACPI. BZ 6859 10020 10021Simplified the internal ACPI hardware interfaces to eliminate the locking 10022flag parameter from Register Read/Write. Added a new external interface, 10023AcpiGetRegisterUnlocked. 10024 10025Fixed a problem where the invocation of a GPE control method could hang. 10026This 10027was a regression introduced in 20080514. The new method argument count 10028validation mechanism can enter an infinite loop when a GPE method is 10029dispatched. Problem fixed by removing the obsolete code that passed GPE 10030block 10031information to the notify handler via the control method parameter 10032pointer. 10033 10034Fixed a problem where the _SST execution status was incorrectly returned 10035to 10036the caller of AcpiEnterSleepStatePrep. This was a regression introduced 10037in 1003820080514. _SST is optional and a NOT_FOUND exception should never be 10039returned. BZ 716 10040 10041Fixed a problem where a deleted object could be accessed from within the 10042AML 10043parser. This was a regression introduced in version 20080123 as a fix for 10044the 10045Unload operator. Lin Ming. BZ 10669 10046 10047Cleaned up the debug operand dump mechanism. Eliminated unnecessary 10048operands 10049and eliminated the use of a negative index in a loop. Operands are now 10050displayed in the correct order, not backwards. This also fixes a 10051regression 10052introduced in 20080514 on 64-bit systems where the elimination of 10053ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 10054715 10055 10056Fixed a possible memory leak in EvPciConfigRegionSetup where the error 10057exit 10058path did not delete a locally allocated structure. 10059 10060Updated definitions for the DMAR and SRAT tables to synchronize with the 10061current specifications. Includes disassembler support. 10062 10063Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 10064loop termination value was used. Loop terminated on iteration early, 10065missing 10066one mutex. Linn Crosetto 10067 10068Example Code and Data Size: These are the sizes for the OS-independent 10069acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10070debug version of the code includes the debug output trace mechanism and 10071has a 10072much larger code and data size. 10073 10074 Previous Release: 10075 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 10076 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 10077 Current Release: 10078 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 10079 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 10080 100812) iASL Compiler/Disassembler and Tools: 10082 10083Disassembler: Implemented support for EisaId() within _CID objects. Now 10084disassemble integer _CID objects back to EisaId invocations, including 10085multiple integers within _CID packages. Includes single-step support for 10086debugger also. 10087 10088Disassembler: Added support for DMAR and SRAT table definition changes. 10089 10090---------------------------------------- 1009114 May 2008. Summary of changes for version 20080514: 10092 100931) ACPI CA Core Subsystem: 10094 10095Fixed a problem where GPEs were enabled too early during the ACPICA 10096initialization. This could lead to "handler not installed" errors on some 10097machines. Moved GPE enable until after _REG/_STA/_INI methods are run. 10098This 10099ensures that all operation regions and devices throughout the namespace 10100have 10101been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 10102 10103Implemented a change to the enter sleep code. Moved execution of the _GTS 10104method to just before setting sleep enable bit. The execution was moved 10105from 10106AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 10107immediately before the SLP_EN bit is set, as per the ACPI specification. 10108Luming Yu, BZ 1653. 10109 10110Implemented a fix to disable unknown GPEs (2nd version). Now always 10111disable 10112the GPE, even if ACPICA thinks that that it is already disabled. It is 10113possible that the AML or some other code has enabled the GPE unbeknownst 10114to 10115the ACPICA code. 10116 10117Fixed a problem with the Field operator where zero-length fields would 10118return 10119an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length 10120ASL 10121field declarations in Field(), BankField(), and IndexField(). BZ 10606. 10122 10123Implemented a fix for the Load operator, now load the table at the 10124namespace 10125root. This reverts a change introduced in version 20071019. The table is 10126now 10127loaded at the namespace root even though this goes against the ACPI 10128specification. This provides compatibility with other ACPI 10129implementations. 10130The ACPI specification will be updated to reflect this in ACPI 4.0. Lin 10131Ming. 10132 10133Fixed a problem where ACPICA would not Load() tables with unusual 10134signatures. 10135Now ignore ACPI table signature for Load() operator. Only "SSDT" is 10136acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 10137Therefore, signature validation is worthless. Apparently MS ACPI accepts 10138such 10139signatures, ACPICA must be compatible. BZ 10454. 10140 10141Fixed a possible negative array index in AcpiUtValidateException. Added 10142NULL 10143fields to the exception string arrays to eliminate a -1 subtraction on 10144the 10145SubStatus field. 10146 10147Updated the debug tracking macros to reduce overall code and data size. 10148Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 10149instead of pointers to static strings. Jan Beulich and Bob Moore. 10150 10151Implemented argument count checking in control method invocation via 10152AcpiEvaluateObject. Now emit an error if too few arguments, warning if 10153too 10154many. This applies only to extern programmatic control method execution, 10155not 10156method-to-method calls within the AML. Lin Ming. 10157 10158Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is 10159no 10160longer needed, especially with the removal of 16-bit support. It was 10161replaced 10162mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 10163bit 10164on 1016532/64-bit platforms is required. 10166 10167Added the C const qualifier for appropriate string constants -- mostly 10168MODULE_NAME and printf format strings. Jan Beulich. 10169 10170Example Code and Data Size: These are the sizes for the OS-independent 10171acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10172debug version of the code includes the debug output trace mechanism and 10173has a 10174much larger code and data size. 10175 10176 Previous Release: 10177 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 10178 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 10179 Current Release: 10180 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 10181 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 10182 101832) iASL Compiler/Disassembler and Tools: 10184 10185Implemented ACPI table revision ID validation in the disassembler. Zero 10186is 10187always invalid. For DSDTs, the ID controls the interpreter integer width. 101881 10189means 32-bit and this is unusual. 2 or greater is 64-bit. 10190 10191---------------------------------------- 1019221 March 2008. Summary of changes for version 20080321: 10193 101941) ACPI CA Core Subsystem: 10195 10196Implemented an additional change to the GPE support in order to suppress 10197spurious or stray GPEs. The AcpiEvDisableGpe function will now 10198permanently 10199disable incoming GPEs that are neither enabled nor disabled -- meaning 10200that 10201the GPE is unknown to the system. This should prevent future interrupt 10202floods 10203from that GPE. BZ 6217 (Zhang Rui) 10204 10205Fixed a problem where NULL package elements were not returned to the 10206AcpiEvaluateObject interface correctly. The element was simply ignored 10207instead of returning a NULL ACPI_OBJECT package element, potentially 10208causing 10209a buffer overflow and/or confusing the caller who expected a fixed number 10210of 10211elements. BZ 10132 (Lin Ming, Bob Moore) 10212 10213Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, 10214Dword, 10215Qword), Field, BankField, and IndexField operators when invoked from 10216inside 10217an executing control method. In this case, these operators created 10218namespace 10219nodes that were incorrectly left marked as permanent nodes instead of 10220temporary nodes. This could cause a problem if there is race condition 10221between an exiting control method and a running namespace walk. (Reported 10222by 10223Linn Crosetto) 10224 10225Fixed a problem where the CreateField and CreateXXXField operators would 10226incorrectly allow duplicate names (the name of the field) with no 10227exception 10228generated. 10229 10230Implemented several changes for Notify handling. Added support for new 10231Notify 10232values (ACPI 2.0+) and improved the Notify debug output. Notify on 10233PowerResource objects is no longer allowed, as per the ACPI 10234specification. 10235(Bob Moore, Zhang Rui) 10236 10237All Reference Objects returned via the AcpiEvaluateObject interface are 10238now 10239marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved 10240for 10241NULL objects - either NULL package elements or unresolved named 10242references. 10243 10244Fixed a problem where an extraneous debug message was produced for 10245package 10246objects (when debugging enabled). The message "Package List length larger 10247than NumElements count" is now produced in the correct case, and is now 10248an 10249error message rather than a debug message. Added a debug message for the 10250opposite case, where NumElements is larger than the Package List (the 10251package 10252will be padded out with NULL elements as per the ACPI spec.) 10253 10254Implemented several improvements for the output of the ASL "Debug" object 10255to 10256clarify and keep all data for a given object on one output line. 10257 10258Fixed two size calculation issues with the variable-length Start 10259Dependent 10260resource descriptor. 10261 10262Example Code and Data Size: These are the sizes for the OS-independent 10263acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10264debug version of the code includes the debug output trace mechanism and 10265has 10266a much larger code and data size. 10267 10268 Previous Release: 10269 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 10270 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 10271 Current Release: 10272 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 10273 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 10274 102752) iASL Compiler/Disassembler and Tools: 10276 10277Fixed a problem with the use of the Switch operator where execution of 10278the 10279containing method by multiple concurrent threads could cause an 10280AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 10281actual Switch opcode, it must be simulated with local named temporary 10282variables and if/else pairs. The solution chosen was to mark any method 10283that 10284uses Switch as Serialized, thus preventing multiple thread entries. BZ 10285469. 10286 10287---------------------------------------- 1028813 February 2008. Summary of changes for version 20080213: 10289 102901) ACPI CA Core Subsystem: 10291 10292Implemented another MS compatibility design change for GPE/Notify 10293handling. 10294GPEs are now cleared/enabled asynchronously to allow all pending notifies 10295to 10296complete first. It is expected that the OSL will queue the enable request 10297behind all pending notify requests (may require changes to the local host 10298OSL 10299in AcpiOsExecute). Alexey Starikovskiy. 10300 10301Fixed a problem where buffer and package objects passed as arguments to a 10302control method via the external AcpiEvaluateObject interface could cause 10303an 10304AE_AML_INTERNAL exception depending on the order and type of operators 10305executed by the target control method. 10306 10307Fixed a problem where resource descriptor size optimization could cause a 10308problem when a _CRS resource template is passed to a _SRS method. The 10309_SRS 10310resource template must use the same descriptors (with the same size) as 10311returned from _CRS. This change affects the following resource 10312descriptors: 10313IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 103149487) 10315 10316Fixed a problem where a CopyObject to RegionField, BankField, and 10317IndexField 10318objects did not perform an implicit conversion as it should. These types 10319must 10320retain their initial type permanently as per the ACPI specification. 10321However, 10322a CopyObject to all other object types should not perform an implicit 10323conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 10324 10325Fixed a problem with the AcpiGetDevices interface where the mechanism to 10326match device CIDs did not examine the entire list of available CIDs, but 10327instead aborted on the first non-matching CID. Andrew Patterson. 10328 10329Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro 10330was 10331inadvertently changed to return a 16-bit value instead of a 32-bit value, 10332truncating the upper dword of a 64-bit value. This macro is only used to 10333display debug output, so no incorrect calculations were made. Also, 10334reimplemented the macro so that a 64-bit shift is not performed by 10335inefficient compilers. 10336 10337Added missing va_end statements that should correspond with each va_start 10338statement. 10339 10340Example Code and Data Size: These are the sizes for the OS-independent 10341acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10342debug version of the code includes the debug output trace mechanism and 10343has 10344a much larger code and data size. 10345 10346 Previous Release: 10347 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 10348 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 10349 Current Release: 10350 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 10351 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 10352 103532) iASL Compiler/Disassembler and Tools: 10354 10355Implemented full disassembler support for the following new ACPI tables: 10356BERT, EINJ, and ERST. Implemented partial disassembler support for the 10357complicated HEST table. These tables support the Windows Hardware Error 10358Architecture (WHEA). 10359 10360---------------------------------------- 1036123 January 2008. Summary of changes for version 20080123: 10362 103631) ACPI CA Core Subsystem: 10364 10365Added the 2008 copyright to all module headers and signons. This affects 10366virtually every file in the ACPICA core subsystem, the iASL compiler, and 10367the tools/utilities. 10368 10369Fixed a problem with the SizeOf operator when used with Package and 10370Buffer 10371objects. These objects have deferred execution for some arguments, and 10372the 10373execution is now completed before the SizeOf is executed. This problem 10374caused 10375unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) 10376BZ 103779558 10378 10379Implemented an enhancement to the interpreter "slack mode". In the 10380absence 10381of 10382an explicit return or an implicitly returned object from the last 10383executed 10384opcode, a control method will now implicitly return an integer of value 0 10385for 10386Microsoft compatibility. (Lin Ming) BZ 392 10387 10388Fixed a problem with the Load operator where an exception was not 10389returned 10390in 10391the case where the table is already loaded. (Lin Ming) BZ 463 10392 10393Implemented support for the use of DDBHandles as an Indexed Reference, as 10394per 10395the ACPI spec. (Lin Ming) BZ 486 10396 10397Implemented support for UserTerm (Method invocation) for the Unload 10398operator 10399as per the ACPI spec. (Lin Ming) BZ 580 10400 10401Fixed a problem with the LoadTable operator where the OemId and 10402OemTableId 10403input strings could cause unexpected failures if they were shorter than 10404the 10405maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 10406 10407Implemented support for UserTerm (Method invocation) for the Unload 10408operator 10409as per the ACPI spec. (Lin Ming) BZ 580 10410 10411Implemented header file support for new ACPI tables - BERT, ERST, EINJ, 10412HEST, 10413IBFT, UEFI, WDAT. Disassembler support is forthcoming. 10414 10415Example Code and Data Size: These are the sizes for the OS-independent 10416acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10417debug version of the code includes the debug output trace mechanism and 10418has 10419a much larger code and data size. 10420 10421 Previous Release: 10422 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 10423 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 10424 Current Release: 10425 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 10426 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 10427 104282) iASL Compiler/Disassembler and Tools: 10429 10430Implemented support in the disassembler for checksum validation on 10431incoming 10432binary DSDTs and SSDTs. If incorrect, a message is displayed within the 10433table 10434header dump at the start of the disassembly. 10435 10436Implemented additional debugging information in the namespace listing 10437file 10438created during compilation. In addition to the namespace hierarchy, the 10439full 10440pathname to each namespace object is displayed. 10441 10442Fixed a problem with the disassembler where invalid ACPI tables could 10443cause 10444faults or infinite loops. 10445 10446Fixed an unexpected parse error when using the optional "parameter types" 10447list in a control method declaration. (Lin Ming) BZ 397 10448 10449Fixed a problem where two External declarations with the same name did 10450not 10451cause an error (Lin Ming) BZ 509 10452 10453Implemented support for full TermArgs (adding Argx, Localx and method 10454invocation) for the ParameterData parameter to the LoadTable operator. 10455(Lin 10456Ming) BZ 583,587 10457 10458---------------------------------------- 1045919 December 2007. Summary of changes for version 20071219: 10460 104611) ACPI CA Core Subsystem: 10462 10463Implemented full support for deferred execution for the TermArg string 10464arguments for DataTableRegion. This enables forward references and full 10465operand resolution for the three string arguments. Similar to 10466OperationRegion 10467deferred argument execution.) Lin Ming. BZ 430 10468 10469Implemented full argument resolution support for the BankValue argument 10470to 10471BankField. Previously, only constants were supported, now any TermArg may 10472be 10473used. Lin Ming BZ 387, 393 10474 10475Fixed a problem with AcpiGetDevices where the search of a branch of the 10476device tree could be terminated prematurely. In accordance with the ACPI 10477specification, the search down the current branch is terminated if a 10478device 10479is both not present and not functional (instead of just not present.) 10480Yakui 10481Zhao. 10482 10483Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly 10484if 10485the underlying AML code changed the GPE enable registers. Now, any 10486unknown 10487incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately 10488disabled 10489instead of simply ignored. Rui Zhang. 10490 10491Fixed a problem with Index Fields where the Index register was 10492incorrectly 10493limited to a maximum of 32 bits. Now any size may be used. 10494 10495Fixed a couple memory leaks associated with "implicit return" objects 10496when 10497the AML Interpreter slack mode is enabled. Lin Ming BZ 349 10498 10499Example Code and Data Size: These are the sizes for the OS-independent 10500acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10501debug version of the code includes the debug output trace mechanism and 10502has 10503a much larger code and data size. 10504 10505 Previous Release: 10506 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 10507 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 10508 Current Release: 10509 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 10510 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 10511 10512---------------------------------------- 1051314 November 2007. Summary of changes for version 20071114: 10514 105151) ACPI CA Core Subsystem: 10516 10517Implemented event counters for each of the Fixed Events, the ACPI SCI 10518(interrupt) itself, and control methods executed. Named 10519AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. 10520These 10521should be useful for debugging and statistics. 10522 10523Implemented a new external interface, AcpiGetStatistics, to retrieve the 10524contents of the various event counters. Returns the current values for 10525AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 10526AcpiMethodCount. The interface can be expanded in the future if new 10527counters 10528are added. Device drivers should use this interface rather than access 10529the 10530counters directly. 10531 10532Fixed a problem with the FromBCD and ToBCD operators. With some 10533compilers, 10534the ShortDivide function worked incorrectly, causing problems with the 10535BCD 10536functions with large input values. A truncation from 64-bit to 32-bit 10537inadvertently occurred. Internal BZ 435. Lin Ming 10538 10539Fixed a problem with Index references passed as method arguments. 10540References 10541passed as arguments to control methods were dereferenced immediately 10542(before 10543control was passed to the called method). The references are now 10544correctly 10545passed directly to the called method. BZ 5389. Lin Ming 10546 10547Fixed a problem with CopyObject used in conjunction with the Index 10548operator. 10549The reference was incorrectly dereferenced before the copy. The reference 10550is 10551now correctly copied. BZ 5391. Lin Ming 10552 10553Fixed a problem with Control Method references within Package objects. 10554These 10555references are now correctly generated. This completes the package 10556construction overhaul that began in version 20071019. 10557 10558Example Code and Data Size: These are the sizes for the OS-independent 10559acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10560debug version of the code includes the debug output trace mechanism and 10561has 10562a much larger code and data size. 10563 10564 Previous Release: 10565 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 10566 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 10567 Current Release: 10568 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 10569 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 10570 10571 105722) iASL Compiler/Disassembler and Tools: 10573 10574The AcpiExec utility now installs handlers for all of the predefined 10575Operation Region types. New types supported are: PCI_Config, CMOS, and 10576PCIBARTarget. 10577 10578Fixed a problem with the 64-bit version of AcpiExec where the extended 10579(64- 10580bit) address fields for the DSDT and FACS within the FADT were not being 10581used, causing truncation of the upper 32-bits of these addresses. Lin 10582Ming 10583and Bob Moore 10584 10585---------------------------------------- 1058619 October 2007. Summary of changes for version 20071019: 10587 105881) ACPI CA Core Subsystem: 10589 10590Fixed a problem with the Alias operator when the target of the alias is a 10591named ASL operator that opens a new scope -- Scope, Device, 10592PowerResource, 10593Processor, and ThermalZone. In these cases, any children of the original 10594operator could not be accessed via the alias, potentially causing 10595unexpected 10596AE_NOT_FOUND exceptions. (BZ 9067) 10597 10598Fixed a problem with the Package operator where all named references were 10599created as object references and left otherwise unresolved. According to 10600the 10601ACPI specification, a Package can only contain Data Objects or references 10602to 10603control methods. The implication is that named references to Data Objects 10604(Integer, Buffer, String, Package, BufferField, Field) should be resolved 10605immediately upon package creation. This is the approach taken with this 10606change. References to all other named objects (Methods, Devices, Scopes, 10607etc.) are all now properly created as reference objects. (BZ 5328) 10608 10609Reverted a change to Notify handling that was introduced in version 1061020070508. This version changed the Notify handling from asynchronous to 10611fully synchronous (Device driver Notify handling with respect to the 10612Notify 10613ASL operator). It was found that this change caused more problems than it 10614solved and was removed by most users. 10615 10616Fixed a problem with the Increment and Decrement operators where the type 10617of 10618the target object could be unexpectedly and incorrectly changed. (BZ 353) 10619Lin Ming. 10620 10621Fixed a problem with the Load and LoadTable operators where the table 10622location within the namespace was ignored. Instead, the table was always 10623loaded into the root or current scope. Lin Ming. 10624 10625Fixed a problem with the Load operator when loading a table from a buffer 10626object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 10627 10628Fixed a problem with the Debug object where a store of a DdbHandle 10629reference 10630object to the Debug object could cause a fault. 10631 10632Added a table checksum verification for the Load operator, in the case 10633where 10634the load is from a buffer. (BZ 578). 10635 10636Implemented additional parameter validation for the LoadTable operator. 10637The 10638length of the input strings SignatureString, OemIdString, and OemTableId 10639are 10640now checked for maximum lengths. (BZ 582) Lin Ming. 10641 10642Example Code and Data Size: These are the sizes for the OS-independent 10643acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10644debug version of the code includes the debug output trace mechanism and 10645has 10646a much larger code and data size. 10647 10648 Previous Release: 10649 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 10650 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 10651 Current Release: 10652 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 10653 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 10654 10655 106562) iASL Compiler/Disassembler: 10657 10658Fixed a problem where if a single file was specified and the file did not 10659exist, no error message was emitted. (Introduced with wildcard support in 10660version 20070917.) 10661 10662---------------------------------------- 1066319 September 2007. Summary of changes for version 20070919: 10664 106651) ACPI CA Core Subsystem: 10666 10667Designed and implemented new external interfaces to install and remove 10668handlers for ACPI table-related events. Current events that are defined 10669are 10670LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 10671they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 10672AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 10673 10674Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 10675(acpi_serialized option on Linux) could cause some systems to hang during 10676initialization. (Bob Moore) BZ 8171 10677 10678Fixed a problem where objects of certain types (Device, ThermalZone, 10679Processor, PowerResource) can be not found if they are declared and 10680referenced from within the same control method (Lin Ming) BZ 341 10681 10682Example Code and Data Size: These are the sizes for the OS-independent 10683acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10684debug version of the code includes the debug output trace mechanism and 10685has 10686a much larger code and data size. 10687 10688 Previous Release: 10689 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 10690 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 10691 Current Release: 10692 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 10693 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 10694 10695 106962) iASL Compiler/Disassembler: 10697 10698Implemented support to allow multiple files to be compiled/disassembled 10699in 10700a 10701single invocation. This includes command line wildcard support for both 10702the 10703Windows and Unix versions of the compiler. This feature simplifies the 10704disassembly and compilation of multiple ACPI tables in a single 10705directory. 10706 10707---------------------------------------- 1070808 May 2007. Summary of changes for version 20070508: 10709 107101) ACPI CA Core Subsystem: 10711 10712Implemented a Microsoft compatibility design change for the handling of 10713the 10714Notify AML operator. Previously, notify handlers were dispatched and 10715executed completely asynchronously in a deferred thread. The new design 10716still executes the notify handlers in a different thread, but the 10717original 10718thread that executed the Notify() now waits at a synchronization point 10719for 10720the notify handler to complete. Some machines depend on a synchronous 10721Notify 10722operator in order to operate correctly. 10723 10724Implemented support to allow Package objects to be passed as method 10725arguments to the external AcpiEvaluateObject interface. Previously, this 10726would return the AE_NOT_IMPLEMENTED exception. This feature had not been 10727implemented since there were no reserved control methods that required it 10728until recently. 10729 10730Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs 10731that 10732contained invalid non-zero values in reserved fields could cause later 10733failures because these fields have meaning in later revisions of the 10734FADT. 10735For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The 10736fields 10737are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 10738 10739Fixed a problem where the Global Lock handle was not properly updated if 10740a 10741thread that acquired the Global Lock via executing AML code then 10742attempted 10743to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by 10744Joe 10745Liu. 10746 10747Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 10748could be corrupted if the interrupt being removed was at the head of the 10749list. Reported by Linn Crosetto. 10750 10751Example Code and Data Size: These are the sizes for the OS-independent 10752acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10753debug version of the code includes the debug output trace mechanism and 10754has 10755a much larger code and data size. 10756 10757 Previous Release: 10758 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 10759 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 10760 Current Release: 10761 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 10762 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 10763 10764---------------------------------------- 1076520 March 2007. Summary of changes for version 20070320: 10766 107671) ACPI CA Core Subsystem: 10768 10769Implemented a change to the order of interpretation and evaluation of AML 10770operand objects within the AML interpreter. The interpreter now evaluates 10771operands in the order that they appear in the AML stream (and the 10772corresponding ASL code), instead of in the reverse order (after the 10773entire 10774operand list has been parsed). The previous behavior caused several 10775subtle 10776incompatibilities with the Microsoft AML interpreter as well as being 10777somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 10778 10779Implemented a change to the ACPI Global Lock support. All interfaces to 10780the 10781global lock now allow the same thread to acquire the lock multiple times. 10782This affects the AcpiAcquireGlobalLock external interface to the global 10783lock 10784as well as the internal use of the global lock to support AML fields -- a 10785control method that is holding the global lock can now simultaneously 10786access 10787AML fields that require global lock protection. Previously, in both 10788cases, 10789this would have resulted in an AE_ALREADY_ACQUIRED exception. The change 10790to 10791AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 10792Controller. There is no change to the behavior of the AML Acquire 10793operator, 10794as this can already be used to acquire a mutex multiple times by the same 10795thread. BZ 8066. With assistance from Alexey Starikovskiy. 10796 10797Fixed a problem where invalid objects could be referenced in the AML 10798Interpreter after error conditions. During operand evaluation, ensure 10799that 10800the internal "Return Object" field is cleared on error and only valid 10801pointers are stored there. Caused occasional access to deleted objects 10802that 10803resulted in "large reference count" warning messages. Valery Podrezov. 10804 10805Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur 10806on 10807deeply nested control method invocations. BZ 7873, local BZ 487. Valery 10808Podrezov. 10809 10810Fixed an internal problem with the handling of result objects on the 10811interpreter result stack. BZ 7872. Valery Podrezov. 10812 10813Removed obsolete code that handled the case where AML_NAME_OP is the 10814target 10815of a reference (Reference.Opcode). This code was no longer necessary. BZ 108167874. Valery Podrezov. 10817 10818Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This 10819was 10820a 10821remnant from the previously discontinued 16-bit support. 10822 10823Example Code and Data Size: These are the sizes for the OS-independent 10824acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10825debug version of the code includes the debug output trace mechanism and 10826has 10827a much larger code and data size. 10828 10829 Previous Release: 10830 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 10831 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 10832 Current Release: 10833 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 10834 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 10835 10836---------------------------------------- 1083726 January 2007. Summary of changes for version 20070126: 10838 108391) ACPI CA Core Subsystem: 10840 10841Added the 2007 copyright to all module headers and signons. This affects 10842virtually every file in the ACPICA core subsystem, the iASL compiler, and 10843the utilities. 10844 10845Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 10846during a table load. A bad pointer was passed in the case where the DSDT 10847is 10848overridden, causing a fault in this case. 10849 10850Example Code and Data Size: These are the sizes for the OS-independent 10851acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10852debug version of the code includes the debug output trace mechanism and 10853has 10854a much larger code and data size. 10855 10856 Previous Release: 10857 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 10858 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 10859 Current Release: 10860 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 10861 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 10862 10863---------------------------------------- 1086415 December 2006. Summary of changes for version 20061215: 10865 108661) ACPI CA Core Subsystem: 10867 10868Support for 16-bit ACPICA has been completely removed since it is no 10869longer 10870necessary and it clutters the code. All 16-bit macros, types, and 10871conditional compiles have been removed, cleaning up and simplifying the 10872code 10873across the entire subsystem. DOS support is no longer needed since the 10874bootable Linux firmware kit is now available. 10875 10876The handler for the Global Lock is now removed during AcpiTerminate to 10877enable a clean subsystem restart, via the implementation of the 10878AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 10879HP) 10880 10881Implemented enhancements to the multithreading support within the 10882debugger 10883to enable improved multithreading debugging and evaluation of the 10884subsystem. 10885(Valery Podrezov) 10886 10887Debugger: Enhanced the Statistics/Memory command to emit the total 10888(maximum) 10889memory used during the execution, as well as the maximum memory consumed 10890by 10891each of the various object types. (Valery Podrezov) 10892 10893Example Code and Data Size: These are the sizes for the OS-independent 10894acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10895debug version of the code includes the debug output trace mechanism and 10896has 10897a much larger code and data size. 10898 10899 Previous Release: 10900 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 10901 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 10902 Current Release: 10903 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 10904 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 10905 10906 109072) iASL Compiler/Disassembler and Tools: 10908 10909AcpiExec: Implemented a new option (-m) to display full memory use 10910statistics upon subsystem/program termination. (Valery Podrezov) 10911 10912---------------------------------------- 1091309 November 2006. Summary of changes for version 20061109: 10914 109151) ACPI CA Core Subsystem: 10916 10917Optimized the Load ASL operator in the case where the source operand is 10918an 10919operation region. Simply map the operation region memory, instead of 10920performing a bytewise read. (Region must be of type SystemMemory, see 10921below.) 10922 10923Fixed the Load ASL operator for the case where the source operand is a 10924region field. A buffer object is also allowed as the source operand. BZ 10925480 10926 10927Fixed a problem where the Load ASL operator allowed the source operand to 10928be 10929an operation region of any type. It is now restricted to regions of type 10930SystemMemory, as per the ACPI specification. BZ 481 10931 10932Additional cleanup and optimizations for the new Table Manager code. 10933 10934AcpiEnable will now fail if all of the required ACPI tables are not 10935loaded 10936(FADT, FACS, DSDT). BZ 477 10937 10938Added #pragma pack(8/4) to acobject.h to ensure that the structures in 10939this 10940header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 10941manually optimized to be aligned and will not work if it is byte-packed. 10942 10943Example Code and Data Size: These are the sizes for the OS-independent 10944acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10945debug version of the code includes the debug output trace mechanism and 10946has 10947a much larger code and data size. 10948 10949 Previous Release: 10950 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 10951 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 10952 Current Release: 10953 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 10954 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 10955 10956 109572) iASL Compiler/Disassembler and Tools: 10958 10959Fixed a problem where the presence of the _OSI predefined control method 10960within complex expressions could cause an internal compiler error. 10961 10962AcpiExec: Implemented full region support for multiple address spaces. 10963SpaceId is now part of the REGION object. BZ 429 10964 10965---------------------------------------- 1096611 October 2006. Summary of changes for version 20061011: 10967 109681) ACPI CA Core Subsystem: 10969 10970Completed an AML interpreter performance enhancement for control method 10971execution. Previously a 2-pass parse/execution, control methods are now 10972completely parsed and executed in a single pass. This improves overall 10973interpreter performance by ~25%, reduces code size, and reduces CPU stack 10974use. (Valery Podrezov + interpreter changes in version 20051202 that 10975eliminated namespace loading during the pass one parse.) 10976 10977Implemented _CID support for PCI Root Bridge detection. If the _HID does 10978not 10979match the predefined PCI Root Bridge IDs, the _CID list (if present) is 10980now 10981obtained and also checked for an ID match. 10982 10983Implemented additional support for the PCI _ADR execution: upsearch until 10984a 10985device scope is found before executing _ADR. This allows PCI_Config 10986operation regions to be declared locally within control methods 10987underneath 10988PCI device objects. 10989 10990Fixed a problem with a possible race condition between threads executing 10991AcpiWalkNamespace and the AML interpreter. This condition was removed by 10992modifying AcpiWalkNamespace to (by default) ignore all temporary 10993namespace 10994entries created during any concurrent control method execution. An 10995additional namespace race condition is known to exist between 10996AcpiWalkNamespace and the Load/Unload ASL operators and is still under 10997investigation. 10998 10999Restructured the AML ParseLoop function, breaking it into several 11000subfunctions in order to reduce CPU stack use and improve 11001maintainability. 11002(Mikhail Kouzmich) 11003 11004AcpiGetHandle: Fix for parameter validation to detect invalid 11005combinations 11006of prefix handle and pathname. BZ 478 11007 11008Example Code and Data Size: These are the sizes for the OS-independent 11009acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11010debug version of the code includes the debug output trace mechanism and 11011has 11012a much larger code and data size. 11013 11014 Previous Release: 11015 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 11016 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 11017 Current Release: 11018 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 11019 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 11020 110212) iASL Compiler/Disassembler and Tools: 11022 11023Ported the -g option (get local ACPI tables) to the new ACPICA Table 11024Manager 11025to restore original behavior. 11026 11027---------------------------------------- 1102827 September 2006. Summary of changes for version 20060927: 11029 110301) ACPI CA Core Subsystem: 11031 11032Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 11033These functions now use a spinlock for mutual exclusion and the interrupt 11034level indication flag is not needed. 11035 11036Fixed a problem with the Global Lock where the lock could appear to be 11037obtained before it is actually obtained. The global lock semaphore was 11038inadvertently created with one unit instead of zero units. (BZ 464) 11039Fiodor 11040Suietov. 11041 11042Fixed a possible memory leak and fault in AcpiExResolveObjectToValue 11043during 11044a read from a buffer or region field. (BZ 458) Fiodor Suietov. 11045 11046Example Code and Data Size: These are the sizes for the OS-independent 11047acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11048debug version of the code includes the debug output trace mechanism and 11049has 11050a much larger code and data size. 11051 11052 Previous Release: 11053 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 11054 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 11055 Current Release: 11056 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 11057 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 11058 11059 110602) iASL Compiler/Disassembler and Tools: 11061 11062Fixed a compilation problem with the pre-defined Resource Descriptor 11063field 11064names where an "object does not exist" error could be incorrectly 11065generated 11066if the parent ResourceTemplate pathname places the template within a 11067different namespace scope than the current scope. (BZ 7212) 11068 11069Fixed a problem where the compiler could hang after syntax errors 11070detected 11071in an ElseIf construct. (BZ 453) 11072 11073Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 11074operator. An incorrect output filename was produced when this parameter 11075was 11076a null string (""). Now, the original input filename is used as the AML 11077output filename, with an ".aml" extension. 11078 11079Implemented a generic batch command mode for the AcpiExec utility 11080(execute 11081any AML debugger command) (Valery Podrezov). 11082 11083---------------------------------------- 1108412 September 2006. Summary of changes for version 20060912: 11085 110861) ACPI CA Core Subsystem: 11087 11088Enhanced the implementation of the "serialized mode" of the interpreter 11089(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 11090specified, instead of creating a serialization semaphore per control 11091method, 11092the interpreter lock is simply no longer released before a blocking 11093operation during control method execution. This effectively makes the AML 11094Interpreter single-threaded. The overhead of a semaphore per-method is 11095eliminated. 11096 11097Fixed a regression where an error was no longer emitted if a control 11098method 11099attempts to create 2 objects of the same name. This once again returns 11100AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism 11101that 11102will dynamically serialize the control method to possible prevent future 11103errors. (BZ 440) 11104 11105Integrated a fix for a problem with PCI Express HID detection in the PCI 11106Config Space setup procedure. (BZ 7145) 11107 11108Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 11109AcpiHwInitialize function - the FADT registers are now validated when the 11110table is loaded. 11111 11112Added two new warnings during FADT verification - 1) if the FADT is 11113larger 11114than the largest known FADT version, and 2) if there is a mismatch 11115between 11116a 1111732-bit block address and the 64-bit X counterpart (when both are non- 11118zero.) 11119 11120Example Code and Data Size: These are the sizes for the OS-independent 11121acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11122debug version of the code includes the debug output trace mechanism and 11123has 11124a much larger code and data size. 11125 11126 Previous Release: 11127 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 11128 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 11129 Current Release: 11130 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 11131 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 11132 11133 111342) iASL Compiler/Disassembler and Tools: 11135 11136Fixed a problem with the implementation of the Switch() operator where 11137the 11138temporary variable was declared too close to the actual Switch, instead 11139of 11140at method level. This could cause a problem if the Switch() operator is 11141within a while loop, causing an error on the second iteration. (BZ 460) 11142 11143Disassembler - fix for error emitted for unknown type for target of scope 11144operator. Now, ignore it and continue. 11145 11146Disassembly of an FADT now verifies the input FADT and reports any errors 11147found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 11148 11149Disassembly of raw data buffers with byte initialization data now 11150prefixes 11151each output line with the current buffer offset. 11152 11153Disassembly of ASF! table now includes all variable-length data fields at 11154the end of some of the subtables. 11155 11156The disassembler now emits a comment if a buffer appears to be a 11157ResourceTemplate, but cannot be disassembled as such because the EndTag 11158does 11159not appear at the very end of the buffer. 11160 11161AcpiExec - Added the "-t" command line option to enable the serialized 11162mode 11163of the AML interpreter. 11164 11165---------------------------------------- 1116631 August 2006. Summary of changes for version 20060831: 11167 111681) ACPI CA Core Subsystem: 11169 11170Miscellaneous fixes for the Table Manager: 11171- Correctly initialize internal common FADT for all 64-bit "X" fields 11172- Fixed a couple table mapping issues during table load 11173- Fixed a couple alignment issues for IA64 11174- Initialize input array to zero in AcpiInitializeTables 11175- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 11176AcpiGetTableByIndex 11177 11178Change for GPE support: when a "wake" GPE is received, all wake GPEs are 11179now 11180immediately disabled to prevent the waking GPE from firing again and to 11181prevent other wake GPEs from interrupting the wake process. 11182 11183Added the AcpiGpeCount global that tracks the number of processed GPEs, 11184to 11185be used for debugging systems with a large number of ACPI interrupts. 11186 11187Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 11188both the ACPICA headers and the disassembler. 11189 11190Example Code and Data Size: These are the sizes for the OS-independent 11191acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11192debug version of the code includes the debug output trace mechanism and 11193has 11194a much larger code and data size. 11195 11196 Previous Release: 11197 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 11198 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 11199 Current Release: 11200 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 11201 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 11202 11203 112042) iASL Compiler/Disassembler and Tools: 11205 11206Disassembler support for the DMAR ACPI table. 11207 11208---------------------------------------- 1120923 August 2006. Summary of changes for version 20060823: 11210 112111) ACPI CA Core Subsystem: 11212 11213The Table Manager component has been completely redesigned and 11214reimplemented. The new design is much simpler, and reduces the overall 11215code 11216and data size of the kernel-resident ACPICA by approximately 5%. Also, it 11217is 11218now possible to obtain the ACPI tables very early during kernel 11219initialization, even before dynamic memory management is initialized. 11220(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 11221 11222Obsolete ACPICA interfaces: 11223 11224- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel 11225init 11226time). 11227- AcpiLoadTable: Not needed. 11228- AcpiUnloadTable: Not needed. 11229 11230New ACPICA interfaces: 11231 11232- AcpiInitializeTables: Must be called before the table manager can be 11233used. 11234- AcpiReallocateRootTable: Used to transfer the root table to dynamically 11235allocated memory after it becomes available. 11236- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI 11237tables 11238in the RSDT/XSDT. 11239 11240Other ACPICA changes: 11241 11242- AcpiGetTableHeader returns the actual mapped table header, not a copy. 11243Use 11244AcpiOsUnmapMemory to free this mapping. 11245- AcpiGetTable returns the actual mapped table. The mapping is managed 11246internally and must not be deleted by the caller. Use of this interface 11247causes no additional dynamic memory allocation. 11248- AcpiFindRootPointer: Support for physical addressing has been 11249eliminated, 11250it appeared to be unused. 11251- The interface to AcpiOsMapMemory has changed to be consistent with the 11252other allocation interfaces. 11253- The interface to AcpiOsGetRootPointer has changed to eliminate 11254unnecessary 11255parameters. 11256- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 1125764- 11258bit platforms. Was previously 64 bits on all platforms. 11259- The interface to the ACPI Global Lock acquire/release macros have 11260changed 11261slightly since ACPICA no longer keeps a local copy of the FACS with a 11262constructed pointer to the actual global lock. 11263 11264Porting to the new table manager: 11265 11266- AcpiInitializeTables: Must be called once, and can be called anytime 11267during the OS initialization process. It allows the host to specify an 11268area 11269of memory to be used to store the internal version of the RSDT/XSDT (root 11270table). This allows the host to access ACPI tables before memory 11271management 11272is initialized and running. 11273- AcpiReallocateRootTable: Can be called after memory management is 11274running 11275to copy the root table to a dynamically allocated array, freeing up the 11276scratch memory specified in the call to AcpiInitializeTables. 11277- AcpiSubsystemInitialize: This existing interface is independent of the 11278Table Manager, and does not have to be called before the Table Manager 11279can 11280be used, it only must be called before the rest of ACPICA can be used. 11281- ACPI Tables: Some changes have been made to the names and structure of 11282the 11283actbl.h and actbl1.h header files and may require changes to existing 11284code. 11285For example, bitfields have been completely removed because of their lack 11286of 11287portability across C compilers. 11288- Update interfaces to the Global Lock acquire/release macros if local 11289versions are used. (see acwin.h) 11290 11291Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 11292 11293New files: tbfind.c 11294 11295Example Code and Data Size: These are the sizes for the OS-independent 11296acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11297debug version of the code includes the debug output trace mechanism and 11298has 11299a much larger code and data size. 11300 11301 Previous Release: 11302 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 11303 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 11304 Current Release: 11305 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 11306 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 11307 11308 113092) iASL Compiler/Disassembler and Tools: 11310 11311No changes for this release. 11312 11313---------------------------------------- 1131421 July 2006. Summary of changes for version 20060721: 11315 113161) ACPI CA Core Subsystem: 11317 11318The full source code for the ASL test suite used to validate the iASL 11319compiler and the ACPICA core subsystem is being released with the ACPICA 11320source for the first time. The source is contained in a separate package 11321and 11322consists of over 1100 files that exercise all ASL/AML operators. The 11323package 11324should appear on the Intel/ACPI web site shortly. (Valery Podrezov, 11325Fiodor 11326Suietov) 11327 11328Completed a new design and implementation for support of the ACPI Global 11329Lock. On the OS side, the global lock is now treated as a standard AML 11330mutex. Previously, multiple OS threads could "acquire" the global lock 11331simultaneously. However, this could cause the BIOS to be starved out of 11332the 11333lock - especially in cases such as the Embedded Controller driver where 11334there is a tight coupling between the OS and the BIOS. 11335 11336Implemented an optimization for the ACPI Global Lock interrupt mechanism. 11337The Global Lock interrupt handler no longer queues the execution of a 11338separate thread to signal the global lock semaphore. Instead, the 11339semaphore 11340is signaled directly from the interrupt handler. 11341 11342Implemented support within the AML interpreter for package objects that 11343contain a larger AML length (package list length) than the package 11344element 11345count. In this case, the length of the package is truncated to match the 11346package element count. Some BIOS code apparently modifies the package 11347length 11348on the fly, and this change supports this behavior. Provides 11349compatibility 11350with the MS AML interpreter. (With assistance from Fiodor Suietov) 11351 11352Implemented a temporary fix for the BankValue parameter of a Bank Field 11353to 11354support all constant values, now including the Zero and One opcodes. 11355Evaluation of this parameter must eventually be converted to a full 11356TermArg 11357evaluation. A not-implemented error is now returned (temporarily) for 11358non- 11359constant values for this parameter. 11360 11361Fixed problem reports (Fiodor Suietov) integrated: 11362- Fix for premature object deletion after CopyObject on Operation Region 11363(BZ 11364350) 11365 11366Example Code and Data Size: These are the sizes for the OS-independent 11367acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11368debug version of the code includes the debug output trace mechanism and 11369has 11370a much larger code and data size. 11371 11372 Previous Release: 11373 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 11374 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 11375 Current Release: 11376 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 11377 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 11378 11379 113802) iASL Compiler/Disassembler and Tools: 11381 11382No changes for this release. 11383 11384---------------------------------------- 1138507 July 2006. Summary of changes for version 20060707: 11386 113871) ACPI CA Core Subsystem: 11388 11389Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 11390that do not allow the initialization of address pointers within packed 11391structures - even though the hardware itself may support misaligned 11392transfers. Some of the debug data structures are packed by default to 11393minimize size. 11394 11395Added an error message for the case where AcpiOsGetThreadId() returns 11396zero. 11397A non-zero value is required by the core ACPICA code to ensure the proper 11398operation of AML mutexes and recursive control methods. 11399 11400The DSDT is now the only ACPI table that determines whether the AML 11401interpreter is in 32-bit or 64-bit mode. Not really a functional change, 11402but 11403the hooks for per-table 32/64 switching have been removed from the code. 11404A 11405clarification to the ACPI specification is forthcoming in ACPI 3.0B. 11406 11407Fixed a possible leak of an OwnerID in the error path of 11408AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 11409deletion to a single place in AcpiTbUninstallTable to correct possible 11410leaks 11411when using the AcpiTbDeleteTablesByType interface (with assistance from 11412Lance Ortiz.) 11413 11414Fixed a problem with Serialized control methods where the semaphore 11415associated with the method could be over-signaled after multiple method 11416invocations. 11417 11418Fixed two issues with the locking of the internal namespace data 11419structure. 11420Both the Unload() operator and AcpiUnloadTable interface now lock the 11421namespace during the namespace deletion associated with the table unload 11422(with assistance from Linn Crosetto.) 11423 11424Fixed problem reports (Valery Podrezov) integrated: 11425- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 11426 11427Fixed problem reports (Fiodor Suietov) integrated: 11428- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 11429- On Address Space handler deletion, needless deactivation call (BZ 374) 11430- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 11431375) 11432- Possible memory leak, Notify sub-objects of Processor, Power, 11433ThermalZone 11434(BZ 376) 11435- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 11436- Minimum Length of RSDT should be validated (BZ 379) 11437- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 11438Handler (BZ (380) 11439- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type 11440loaded 11441(BZ 381) 11442 11443Example Code and Data Size: These are the sizes for the OS-independent 11444acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11445debug version of the code includes the debug output trace mechanism and 11446has 11447a much larger code and data size. 11448 11449 Previous Release: 11450 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 11451 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 11452 Current Release: 11453 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 11454 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 11455 11456 114572) iASL Compiler/Disassembler and Tools: 11458 11459Fixed problem reports: 11460Compiler segfault when ASL contains a long (>1024) String declaration (BZ 11461436) 11462 11463---------------------------------------- 1146423 June 2006. Summary of changes for version 20060623: 11465 114661) ACPI CA Core Subsystem: 11467 11468Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 11469allows the type to be customized to the host OS for improved efficiency 11470(since a spinlock is usually a very small object.) 11471 11472Implemented support for "ignored" bits in the ACPI registers. According 11473to 11474the ACPI specification, these bits should be preserved when writing the 11475registers via a read/modify/write cycle. There are 3 bits preserved in 11476this 11477manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 11478 11479Implemented the initial deployment of new OSL mutex interfaces. Since 11480some 11481host operating systems have separate mutex and semaphore objects, this 11482feature was requested. The base code now uses mutexes (and the new mutex 11483interfaces) wherever a binary semaphore was used previously. However, for 11484the current release, the mutex interfaces are defined as macros to map 11485them 11486to the existing semaphore interfaces. Therefore, no OSL changes are 11487required 11488at this time. (See acpiosxf.h) 11489 11490Fixed several problems with the support for the control method SyncLevel 11491parameter. The SyncLevel now works according to the ACPI specification 11492and 11493in concert with the Mutex SyncLevel parameter, since the current 11494SyncLevel 11495is a property of the executing thread. Mutual exclusion for control 11496methods 11497is now implemented with a mutex instead of a semaphore. 11498 11499Fixed three instances of the use of the C shift operator in the bitfield 11500support code (exfldio.c) to avoid the use of a shift value larger than 11501the 11502target data width. The behavior of C compilers is undefined in this case 11503and 11504can cause unpredictable results, and therefore the case must be detected 11505and 11506avoided. (Fiodor Suietov) 11507 11508Added an info message whenever an SSDT or OEM table is loaded dynamically 11509via the Load() or LoadTable() ASL operators. This should improve 11510debugging 11511capability since it will show exactly what tables have been loaded 11512(beyond 11513the tables present in the RSDT/XSDT.) 11514 11515Example Code and Data Size: These are the sizes for the OS-independent 11516acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11517debug version of the code includes the debug output trace mechanism and 11518has 11519a much larger code and data size. 11520 11521 Previous Release: 11522 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 11523 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 11524 Current Release: 11525 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 11526 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 11527 11528 115292) iASL Compiler/Disassembler and Tools: 11530 11531No changes for this release. 11532 11533---------------------------------------- 1153408 June 2006. Summary of changes for version 20060608: 11535 115361) ACPI CA Core Subsystem: 11537 11538Converted the locking mutex used for the ACPI hardware to a spinlock. 11539This 11540change should eliminate all problems caused by attempting to acquire a 11541semaphore at interrupt level, and it means that all ACPICA external 11542interfaces that directly access the ACPI hardware can be safely called 11543from 11544interrupt level. OSL code that implements the semaphore interfaces should 11545be 11546able to eliminate any workarounds for being called at interrupt level. 11547 11548Fixed a regression introduced in 20060526 where the ACPI device 11549initialization could be prematurely aborted with an AE_NOT_FOUND if a 11550device 11551did not have an optional _INI method. 11552 11553Fixed an IndexField issue where a write to the Data Register should be 11554limited in size to the AccessSize (width) of the IndexField itself. (BZ 11555433, 11556Fiodor Suietov) 11557 11558Fixed problem reports (Valery Podrezov) integrated: 11559- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 11560 11561Fixed problem reports (Fiodor Suietov) integrated: 11562- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 11563 11564Removed four global mutexes that were obsolete and were no longer being 11565used. 11566 11567Example Code and Data Size: These are the sizes for the OS-independent 11568acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11569debug version of the code includes the debug output trace mechanism and 11570has 11571a much larger code and data size. 11572 11573 Previous Release: 11574 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 11575 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 11576 Current Release: 11577 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 11578 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 11579 11580 115812) iASL Compiler/Disassembler and Tools: 11582 11583Fixed a fault when using -g option (get tables from registry) on Windows 11584machines. 11585 11586Fixed problem reports integrated: 11587- Generate error if CreateField NumBits parameter is zero. (BZ 405) 11588- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 11589Suietov) 11590- Global table revision override (-r) is ignored (BZ 413) 11591 11592---------------------------------------- 1159326 May 2006. Summary of changes for version 20060526: 11594 115951) ACPI CA Core Subsystem: 11596 11597Restructured, flattened, and simplified the internal interfaces for 11598namespace object evaluation - resulting in smaller code, less CPU stack 11599use, 11600and fewer interfaces. (With assistance from Mikhail Kouzmich) 11601 11602Fixed a problem with the CopyObject operator where the first parameter 11603was 11604not typed correctly for the parser, interpreter, compiler, and 11605disassembler. 11606Caused various errors and unexpected behavior. 11607 11608Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 11609produced incorrect results with some C compilers. Since the behavior of C 11610compilers when the shift value is larger than the datatype width is 11611apparently not well defined, the interpreter now detects this condition 11612and 11613simply returns zero as expected in all such cases. (BZ 395) 11614 11615Fixed problem reports (Valery Podrezov) integrated: 11616- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 11617- Allow interpreter to handle nested method declarations (BZ 5361) 11618 11619Fixed problem reports (Fiodor Suietov) integrated: 11620- AcpiTerminate doesn't free debug memory allocation list objects (BZ 11621355) 11622- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 11623356) 11624- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 11625- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 11626- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 11627- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 11628- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 11629- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 11630- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 11631365) 11632- Status of the Global Initialization Handler call not used (BZ 366) 11633- Incorrect object parameter to Global Initialization Handler (BZ 367) 11634 11635Example Code and Data Size: These are the sizes for the OS-independent 11636acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11637debug version of the code includes the debug output trace mechanism and 11638has 11639a much larger code and data size. 11640 11641 Previous Release: 11642 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 11643 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 11644 Current Release: 11645 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 11646 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 11647 11648 116492) iASL Compiler/Disassembler and Tools: 11650 11651Modified the parser to allow the names IO, DMA, and IRQ to be used as 11652namespace identifiers with no collision with existing resource descriptor 11653macro names. This provides compatibility with other ASL compilers and is 11654most useful for disassembly/recompilation of existing tables without 11655parse 11656errors. (With assistance from Thomas Renninger) 11657 11658Disassembler: fixed an incorrect disassembly problem with the 11659DataTableRegion and CopyObject operators. Fixed a possible fault during 11660disassembly of some Alias operators. 11661 11662---------------------------------------- 1166312 May 2006. Summary of changes for version 20060512: 11664 116651) ACPI CA Core Subsystem: 11666 11667Replaced the AcpiOsQueueForExecution interface with a new interface named 11668AcpiOsExecute. The major difference is that the new interface does not 11669have 11670a Priority parameter, this appeared to be useless and has been replaced 11671by 11672a 11673Type parameter. The Type tells the host what type of execution is being 11674requested, such as global lock handler, notify handler, GPE handler, etc. 11675This allows the host to queue and execute the request as appropriate for 11676the 11677request type, possibly using different work queues and different 11678priorities 11679for the various request types. This enables fixes for multithreading 11680deadlock problems such as BZ #5534, and will require changes to all 11681existing 11682OS interface layers. (Alexey Starikovskiy and Bob Moore) 11683 11684Fixed a possible memory leak associated with the support for the so- 11685called 11686"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 11687Suietov) 11688 11689Fixed a problem with the Load() operator where a table load from an 11690operation region could overwrite an internal table buffer by up to 7 11691bytes 11692and cause alignment faults on IPF systems. (With assistance from Luming 11693Yu) 11694 11695Example Code and Data Size: These are the sizes for the OS-independent 11696acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11697debug version of the code includes the debug output trace mechanism and 11698has 11699a much larger code and data size. 11700 11701 Previous Release: 11702 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 11703 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 11704 Current Release: 11705 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 11706 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 11707 11708 11709 117102) iASL Compiler/Disassembler and Tools: 11711 11712Disassembler: Implemented support to cross reference the internal 11713namespace 11714and automatically generate ASL External() statements for symbols not 11715defined 11716within the current table being disassembled. This will simplify the 11717disassembly and recompilation of interdependent tables such as SSDTs 11718since 11719these statements will no longer have to be added manually. 11720 11721Disassembler: Implemented experimental support to automatically detect 11722invocations of external control methods and generate appropriate 11723External() 11724statements. This is problematic because the AML cannot be correctly 11725parsed 11726until the number of arguments for each control method is known. 11727Currently, 11728standalone method invocations and invocations as the source operand of a 11729Store() statement are supported. 11730 11731Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 11732LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 11733LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 11734more readable and likely closer to the original ASL source. 11735 11736---------------------------------------- 1173721 April 2006. Summary of changes for version 20060421: 11738 117391) ACPI CA Core Subsystem: 11740 11741Removed a device initialization optimization introduced in 20051216 where 11742the _STA method was not run unless an _INI was also present for the same 11743device. This optimization could cause problems because it could allow 11744_INI 11745methods to be run within a not-present device subtree. (If a not-present 11746device had no _INI, _STA would not be run, the not-present status would 11747not 11748be discovered, and the children of the device would be incorrectly 11749traversed.) 11750 11751Implemented a new _STA optimization where namespace subtrees that do not 11752contain _INI are identified and ignored during device initialization. 11753Selectively running _STA can significantly improve boot time on large 11754machines (with assistance from Len Brown.) 11755 11756Implemented support for the device initialization case where the returned 11757_STA flags indicate a device not-present but functioning. In this case, 11758_INI 11759is not run, but the device children are examined for presence, as per the 11760ACPI specification. 11761 11762Implemented an additional change to the IndexField support in order to 11763conform to MS behavior. The value written to the Index Register is not 11764simply a byte offset, it is a byte offset in units of the access width of 11765the parent Index Field. (Fiodor Suietov) 11766 11767Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 11768interface is called during the creation of all AML operation regions, and 11769allows the host OS to exert control over what addresses it will allow the 11770AML code to access. Operation Regions whose addresses are disallowed will 11771cause a runtime exception when they are actually accessed (will not 11772affect 11773or abort table loading.) See oswinxf or osunixxf for an example 11774implementation. 11775 11776Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 11777interface allows the host OS to match the various "optional" 11778interface/behavior strings for the _OSI predefined control method as 11779appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 11780for an example implementation. 11781 11782Restructured and corrected various problems in the exception handling 11783code 11784paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 11785(with assistance from Takayoshi Kochi.) 11786 11787Modified the Linux source converter to ignore quoted string literals 11788while 11789converting identifiers from mixed to lower case. This will correct 11790problems 11791with the disassembler and other areas where such strings must not be 11792modified. 11793 11794The ACPI_FUNCTION_* macros no longer require quotes around the function 11795name. This allows the Linux source converter to convert the names, now 11796that 11797the converter ignores quoted strings. 11798 11799Example Code and Data Size: These are the sizes for the OS-independent 11800acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11801debug version of the code includes the debug output trace mechanism and 11802has 11803a much larger code and data size. 11804 11805 Previous Release: 11806 11807 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 11808 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 11809 Current Release: 11810 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 11811 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 11812 11813 118142) iASL Compiler/Disassembler and Tools: 11815 11816Implemented 3 new warnings for iASL, and implemented multiple warning 11817levels 11818(w2 flag). 11819 118201) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is 11821not 11822WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 11823check for the possible timeout, a warning is issued. 11824 118252) Useless operators: If an ASL operator does not specify an optional 11826target 11827operand and it also does not use the function return value from the 11828operator, a warning is issued since the operator effectively does 11829nothing. 11830 118313) Unreferenced objects: If a namespace object is created, but never 11832referenced, a warning is issued. This is a warning level 2 since there 11833are 11834cases where this is ok, such as when a secondary table is loaded that 11835uses 11836the unreferenced objects. Even so, care is taken to only flag objects 11837that 11838don't look like they will ever be used. For example, the reserved methods 11839(starting with an underscore) are usually not referenced because it is 11840expected that the OS will invoke them. 11841 11842---------------------------------------- 1184331 March 2006. Summary of changes for version 20060331: 11844 118451) ACPI CA Core Subsystem: 11846 11847Implemented header file support for the following additional ACPI tables: 11848ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this 11849support, 11850all current and known ACPI tables are now defined in the ACPICA headers 11851and 11852are available for use by device drivers and other software. 11853 11854Implemented support to allow tables that contain ACPI names with invalid 11855characters to be loaded. Previously, this would cause the table load to 11856fail, but since there are several known cases of such tables on existing 11857machines, this change was made to enable ACPI support for them. Also, 11858this 11859matches the behavior of the Microsoft ACPI implementation. 11860 11861Fixed a couple regressions introduced during the memory optimization in 11862the 1186320060317 release. The namespace node definition required additional 11864reorganization and an internal datatype that had been changed to 8-bit 11865was 11866restored to 32-bit. (Valery Podrezov) 11867 11868Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 11869could be passed through to AcpiOsReleaseObject which is unexpected. Such 11870null pointers are now trapped and ignored, matching the behavior of the 11871previous implementation before the deployment of AcpiOsReleaseObject. 11872(Valery Podrezov, Fiodor Suietov) 11873 11874Fixed a memory mapping leak during the deletion of a SystemMemory 11875operation 11876region where a cached memory mapping was not deleted. This became a 11877noticeable problem for operation regions that are defined within 11878frequently 11879used control methods. (Dana Meyers) 11880 11881Reorganized the ACPI table header files into two main files: one for the 11882ACPI tables consumed by the ACPICA core, and another for the 11883miscellaneous 11884ACPI tables that are consumed by the drivers and other software. The 11885various 11886FADT definitions were merged into one common section and three different 11887tables (ACPI 1.0, 1.0+, and 2.0) 11888 11889Example Code and Data Size: These are the sizes for the OS-independent 11890acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11891debug version of the code includes the debug output trace mechanism and 11892has 11893a much larger code and data size. 11894 11895 Previous Release: 11896 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 11897 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 11898 Current Release: 11899 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 11900 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 11901 11902 119032) iASL Compiler/Disassembler and Tools: 11904 11905Disassembler: Implemented support to decode and format all non-AML ACPI 11906tables (tables other than DSDTs and SSDTs.) This includes the new tables 11907added to the ACPICA headers, therefore all current and known ACPI tables 11908are 11909supported. 11910 11911Disassembler: The change to allow ACPI names with invalid characters also 11912enables the disassembly of such tables. Invalid characters within names 11913are 11914changed to '*' to make the name printable; the iASL compiler will still 11915generate an error for such names, however, since this is an invalid ACPI 11916character. 11917 11918Implemented an option for AcpiXtract (-a) to extract all tables found in 11919the 11920input file. The default invocation extracts only the DSDTs and SSDTs. 11921 11922Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 11923makefile for the AcpiXtract utility. 11924 11925---------------------------------------- 1192617 March 2006. Summary of changes for version 20060317: 11927 119281) ACPI CA Core Subsystem: 11929 11930Implemented the use of a cache object for all internal namespace nodes. 11931Since there are about 1000 static nodes in a typical system, this will 11932decrease memory use for cache implementations that minimize per- 11933allocation 11934overhead (such as a slab allocator.) 11935 11936Removed the reference count mechanism for internal namespace nodes, since 11937it 11938was deemed unnecessary. This reduces the size of each namespace node by 11939about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit 11940case, 11941and 32 bytes for the 64-bit case. 11942 11943Optimized several internal data structures to reduce object size on 64- 11944bit 11945platforms by packing data within the 64-bit alignment. This includes the 11946frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 11947instances corresponding to the namespace objects. 11948 11949Added two new strings for the predefined _OSI method: "Windows 2001.1 11950SP1" 11951and "Windows 2006". 11952 11953Split the allocation tracking mechanism out to a separate file, from 11954utalloc.c to uttrack.c. This mechanism appears to be only useful for 11955application-level code. Kernels may wish to not include uttrack.c in 11956distributions. 11957 11958Removed all remnants of the obsolete ACPI_REPORT_* macros and the 11959associated 11960code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 11961macros.) 11962 11963Code and Data Size: These are the sizes for the acpica.lib produced by 11964the 11965Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 11966ACPI 11967driver or OSPM code. The debug version of the code includes the debug 11968output 11969trace mechanism and has a much larger code and data size. Note that these 11970values will vary depending on the efficiency of the compiler and the 11971compiler options used during generation. 11972 11973 Previous Release: 11974 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 11975 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 11976 Current Release: 11977 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 11978 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 11979 11980 119812) iASL Compiler/Disassembler and Tools: 11982 11983Implemented an ANSI C version of the acpixtract utility. This version 11984will 11985automatically extract the DSDT and all SSDTs from the input acpidump text 11986file and dump the binary output to separate files. It can also display a 11987summary of the input file including the headers for each table found and 11988will extract any single ACPI table, with any signature. (See 11989source/tools/acpixtract) 11990 11991---------------------------------------- 1199210 March 2006. Summary of changes for version 20060310: 11993 119941) ACPI CA Core Subsystem: 11995 11996Tagged all external interfaces to the subsystem with the new 11997ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to 11998assist 11999kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 12000macro. The default definition is NULL. 12001 12002Added the ACPI_THREAD_ID type for the return value from 12003AcpiOsGetThreadId. 12004This allows the host to define this as necessary to simplify kernel 12005integration. The default definition is ACPI_NATIVE_UINT. 12006 12007Fixed two interpreter problems related to error processing, the deletion 12008of 12009objects, and placing invalid pointers onto the internal operator result 12010stack. BZ 6028, 6151 (Valery Podrezov) 12011 12012Increased the reference count threshold where a warning is emitted for 12013large 12014reference counts in order to eliminate unnecessary warnings on systems 12015with 12016large namespaces (especially 64-bit.) Increased the value from 0x400 to 120170x800. 12018 12019Due to universal disagreement as to the meaning of the 'c' in the 12020calloc() 12021function, the ACPI_MEM_CALLOCATE macro has been renamed to 12022ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 12023ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 12024ACPI_FREE. 12025 12026Code and Data Size: These are the sizes for the acpica.lib produced by 12027the 12028Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 12029ACPI 12030driver or OSPM code. The debug version of the code includes the debug 12031output 12032trace mechanism and has a much larger code and data size. Note that these 12033values will vary depending on the efficiency of the compiler and the 12034compiler options used during generation. 12035 12036 Previous Release: 12037 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 12038 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 12039 Current Release: 12040 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 12041 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 12042 12043 120442) iASL Compiler/Disassembler: 12045 12046Disassembler: implemented support for symbolic resource descriptor 12047references. If a CreateXxxxField operator references a fixed offset 12048within 12049a 12050resource descriptor, a name is assigned to the descriptor and the offset 12051is 12052translated to the appropriate resource tag and pathname. The addition of 12053this support brings the disassembled code very close to the original ASL 12054source code and helps eliminate run-time errors when the disassembled 12055code 12056is modified (and recompiled) in such a way as to invalidate the original 12057fixed offsets. 12058 12059Implemented support for a Descriptor Name as the last parameter to the 12060ASL 12061Register() macro. This parameter was inadvertently left out of the ACPI 12062specification, and will be added for ACPI 3.0b. 12063 12064Fixed a problem where the use of the "_OSI" string (versus the full path 12065"\_OSI") caused an internal compiler error. ("No back ptr to op") 12066 12067Fixed a problem with the error message that occurs when an invalid string 12068is 12069used for a _HID object (such as one with an embedded asterisk: 12070"*PNP010A".) 12071The correct message is now displayed. 12072 12073---------------------------------------- 1207417 February 2006. Summary of changes for version 20060217: 12075 120761) ACPI CA Core Subsystem: 12077 12078Implemented a change to the IndexField support to match the behavior of 12079the 12080Microsoft AML interpreter. The value written to the Index register is now 12081a 12082byte offset, no longer an index based upon the width of the Data 12083register. 12084This should fix IndexField problems seen on some machines where the Data 12085register is not exactly one byte wide. The ACPI specification will be 12086clarified on this point. 12087 12088Fixed a problem where several resource descriptor types could overrun the 12089internal descriptor buffer due to size miscalculation: VendorShort, 12090VendorLong, and Interrupt. This was noticed on IA64 machines, but could 12091affect all platforms. 12092 12093Fixed a problem where individual resource descriptors were misaligned 12094within 12095the internal buffer, causing alignment faults on IA64 platforms. 12096 12097Code and Data Size: These are the sizes for the acpica.lib produced by 12098the 12099Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 12100ACPI 12101driver or OSPM code. The debug version of the code includes the debug 12102output 12103trace mechanism and has a much larger code and data size. Note that these 12104values will vary depending on the efficiency of the compiler and the 12105compiler options used during generation. 12106 12107 Previous Release: 12108 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 12109 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 12110 Current Release: 12111 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 12112 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 12113 12114 121152) iASL Compiler/Disassembler: 12116 12117Implemented support for new reserved names: _WDG and _WED are Microsoft 12118extensions for Windows Instrumentation Management, _TDL is a new ACPI- 12119defined method (Throttling Depth Limit.) 12120 12121Fixed a problem where a zero-length VendorShort or VendorLong resource 12122descriptor was incorrectly emitted as a descriptor of length one. 12123 12124---------------------------------------- 1212510 February 2006. Summary of changes for version 20060210: 12126 121271) ACPI CA Core Subsystem: 12128 12129Removed a couple of extraneous ACPI_ERROR messages that appeared during 12130normal execution. These became apparent after the conversion from 12131ACPI_DEBUG_PRINT. 12132 12133Fixed a problem where the CreateField operator could hang if the BitIndex 12134or 12135NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 12136 12137Fixed a problem where a DeRefOf operation on a buffer object incorrectly 12138failed with an exception. This also fixes a couple of related RefOf and 12139DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 12140 12141Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead 12142of 12143AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, 12144BZ 121455480) 12146 12147Implemented a memory cleanup at the end of the execution of each 12148iteration 12149of an AML While() loop, preventing the accumulation of outstanding 12150objects. 12151(Valery Podrezov, BZ 5427) 12152 12153Eliminated a chunk of duplicate code in the object resolution code. 12154(Valery 12155Podrezov, BZ 5336) 12156 12157Fixed several warnings during the 64-bit code generation. 12158 12159The AcpiSrc source code conversion tool now inserts one line of 12160whitespace 12161after an if() statement that is followed immediately by a comment, 12162improving 12163readability of the Linux code. 12164 12165Code and Data Size: The current and previous library sizes for the core 12166subsystem are shown below. These are the code and data sizes for the 12167acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12168These 12169values do not include any ACPI driver or OSPM code. The debug version of 12170the 12171code includes the debug output trace mechanism and has a much larger code 12172and data size. Note that these values will vary depending on the 12173efficiency 12174of the compiler and the compiler options used during generation. 12175 12176 Previous Release: 12177 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 12178 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 12179 Current Release: 12180 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 12181 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 12182 12183 121842) iASL Compiler/Disassembler: 12185 12186Fixed a problem with the disassembly of a BankField operator with a 12187complex 12188expression for the BankValue parameter. 12189 12190---------------------------------------- 1219127 January 2006. Summary of changes for version 20060127: 12192 121931) ACPI CA Core Subsystem: 12194 12195Implemented support in the Resource Manager to allow unresolved 12196namestring 12197references within resource package objects for the _PRT method. This 12198support 12199is in addition to the previously implemented unresolved reference support 12200within the AML parser. If the interpreter slack mode is enabled, these 12201unresolved references will be passed through to the caller as a NULL 12202package 12203entry. 12204 12205Implemented and deployed new macros and functions for error and warning 12206messages across the subsystem. These macros are simpler and generate less 12207code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 12208ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 12209macros remain defined to allow ACPI drivers time to migrate to the new 12210macros. 12211 12212Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of 12213the 12214Acquire/Release Lock OSL interfaces. 12215 12216Fixed a problem where Alias ASL operators are sometimes not correctly 12217resolved, in both the interpreter and the iASL compiler. 12218 12219Fixed several problems with the implementation of the 12220ConcatenateResTemplate 12221ASL operator. As per the ACPI specification, zero length buffers are now 12222treated as a single EndTag. One-length buffers always cause a fatal 12223exception. Non-zero length buffers that do not end with a full 2-byte 12224EndTag 12225cause a fatal exception. 12226 12227Fixed a possible structure overwrite in the AcpiGetObjectInfo external 12228interface. (With assistance from Thomas Renninger) 12229 12230Code and Data Size: The current and previous library sizes for the core 12231subsystem are shown below. These are the code and data sizes for the 12232acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12233These 12234values do not include any ACPI driver or OSPM code. The debug version of 12235the 12236code includes the debug output trace mechanism and has a much larger code 12237and data size. Note that these values will vary depending on the 12238efficiency 12239of the compiler and the compiler options used during generation. 12240 12241 Previous Release: 12242 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 12243 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 12244 Current Release: 12245 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 12246 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 12247 12248 122492) iASL Compiler/Disassembler: 12250 12251Fixed an internal error that was generated for any forward references to 12252ASL 12253Alias objects. 12254 12255---------------------------------------- 1225613 January 2006. Summary of changes for version 20060113: 12257 122581) ACPI CA Core Subsystem: 12259 12260Added 2006 copyright to all module headers and signons. This affects 12261virtually every file in the ACPICA core subsystem, iASL compiler, and the 12262utilities. 12263 12264Enhanced the ACPICA error reporting in order to simplify user migration 12265to 12266the non-debug version of ACPICA. Replaced all instances of the 12267ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN 12268debug 12269levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 12270respectively. This preserves all error and warning messages in the non- 12271debug 12272version of the ACPICA code (this has been referred to as the "debug lite" 12273option.) Over 200 cases were converted to create a total of over 380 12274error/warning messages across the ACPICA code. This increases the code 12275and 12276data size of the default non-debug version of the code somewhat (about 1227713K), 12278but all error/warning reporting may be disabled if desired (and code 12279eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 12280configuration option. The size of the debug version of ACPICA remains 12281about 12282the same. 12283 12284Fixed a memory leak within the AML Debugger "Set" command. One object was 12285not properly deleted for every successful invocation of the command. 12286 12287Code and Data Size: The current and previous library sizes for the core 12288subsystem are shown below. These are the code and data sizes for the 12289acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12290These 12291values do not include any ACPI driver or OSPM code. The debug version of 12292the 12293code includes the debug output trace mechanism and has a much larger code 12294and data size. Note that these values will vary depending on the 12295efficiency 12296of the compiler and the compiler options used during generation. 12297 12298 Previous Release: 12299 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 12300 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 12301 Current Release: 12302 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 12303 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 12304 12305 123062) iASL Compiler/Disassembler: 12307 12308The compiler now officially supports the ACPI 3.0a specification that was 12309released on December 30, 2005. (Specification is available at 12310www.acpi.info) 12311 12312---------------------------------------- 1231316 December 2005. Summary of changes for version 20051216: 12314 123151) ACPI CA Core Subsystem: 12316 12317Implemented optional support to allow unresolved names within ASL Package 12318objects. A null object is inserted in the package when a named reference 12319cannot be located in the current namespace. Enabled via the interpreter 12320slack flag, this should eliminate AE_NOT_FOUND exceptions seen on 12321machines 12322that contain such code. 12323 12324Implemented an optimization to the initialization sequence that can 12325improve 12326boot time. During ACPI device initialization, the _STA method is now run 12327if 12328and only if the _INI method exists. The _STA method is used to determine 12329if 12330the device is present; An _INI can only be run if _STA returns present, 12331but 12332it is a waste of time to run the _STA method if the _INI does not exist. 12333(Prototype and assistance from Dong Wei) 12334 12335Implemented use of the C99 uintptr_t for the pointer casting macros if it 12336is 12337available in the current compiler. Otherwise, the default (void *) cast 12338is 12339used as before. 12340 12341Fixed some possible memory leaks found within the execution path of the 12342Break, Continue, If, and CreateField operators. (Valery Podrezov) 12343 12344Fixed a problem introduced in the 20051202 release where an exception is 12345generated during method execution if a control method attempts to declare 12346another method. 12347 12348Moved resource descriptor string constants that are used by both the AML 12349disassembler and AML debugger to the common utilities directory so that 12350these components are independent. 12351 12352Implemented support in the AcpiExec utility (-e switch) to globally 12353ignore 12354exceptions during control method execution (method is not aborted.) 12355 12356Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 12357generation. 12358 12359Code and Data Size: The current and previous library sizes for the core 12360subsystem are shown below. These are the code and data sizes for the 12361acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12362These 12363values do not include any ACPI driver or OSPM code. The debug version of 12364the 12365code includes the debug output trace mechanism and has a much larger code 12366and data size. Note that these values will vary depending on the 12367efficiency 12368of the compiler and the compiler options used during generation. 12369 12370 Previous Release: 12371 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 12372 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 12373 Current Release: 12374 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 12375 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 12376 12377 123782) iASL Compiler/Disassembler: 12379 12380Fixed a problem where a CPU stack overflow fault could occur if a 12381recursive 12382method call was made from within a Return statement. 12383 12384---------------------------------------- 1238502 December 2005. Summary of changes for version 20051202: 12386 123871) ACPI CA Core Subsystem: 12388 12389Modified the parsing of control methods to no longer create namespace 12390objects during the first pass of the parse. Objects are now created only 12391during the execute phase, at the moment the namespace creation operator 12392is 12393encountered in the AML (Name, OperationRegion, CreateByteField, etc.) 12394This 12395should eliminate ALREADY_EXISTS exceptions seen on some machines where 12396reentrant control methods are protected by an AML mutex. The mutex will 12397now 12398correctly block multiple threads from attempting to create the same 12399object 12400more than once. 12401 12402Increased the number of available Owner Ids for namespace object tracking 12403from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen 12404on 12405some machines with a large number of ACPI tables (either static or 12406dynamic). 12407 12408Fixed a problem with the AcpiExec utility where a fault could occur when 12409the 12410-b switch (batch mode) is used. 12411 12412Enhanced the namespace dump routine to output the owner ID for each 12413namespace object. 12414 12415Code and Data Size: The current and previous library sizes for the core 12416subsystem are shown below. These are the code and data sizes for the 12417acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12418These 12419values do not include any ACPI driver or OSPM code. The debug version of 12420the 12421code includes the debug output trace mechanism and has a much larger code 12422and data size. Note that these values will vary depending on the 12423efficiency 12424of the compiler and the compiler options used during generation. 12425 12426 Previous Release: 12427 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 12428 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 12429 Current Release: 12430 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 12431 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 12432 12433 124342) iASL Compiler/Disassembler: 12435 12436Fixed a parse error during compilation of certain Switch/Case constructs. 12437To 12438simplify the parse, the grammar now allows for multiple Default 12439statements 12440and this error is now detected and flagged during the analysis phase. 12441 12442Disassembler: The disassembly now includes the contents of the original 12443table header within a comment at the start of the file. This includes the 12444name and version of the original ASL compiler. 12445 12446---------------------------------------- 1244717 November 2005. Summary of changes for version 20051117: 12448 124491) ACPI CA Core Subsystem: 12450 12451Fixed a problem in the AML parser where the method thread count could be 12452decremented below zero if any errors occurred during the method parse 12453phase. 12454This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some 12455machines. 12456This also fixed a related regression with the mechanism that detects and 12457corrects methods that cannot properly handle reentrancy (related to the 12458deployment of the new OwnerId mechanism.) 12459 12460Eliminated the pre-parsing of control methods (to detect errors) during 12461table load. Related to the problem above, this was causing unwind issues 12462if 12463any errors occurred during the parse, and it seemed to be overkill. A 12464table 12465load should not be aborted if there are problems with any single control 12466method, thus rendering this feature rather pointless. 12467 12468Fixed a problem with the new table-driven resource manager where an 12469internal 12470buffer overflow could occur for small resource templates. 12471 12472Implemented a new external interface, AcpiGetVendorResource. This 12473interface 12474will find and return a vendor-defined resource descriptor within a _CRS 12475or 12476_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn 12477Helgaas. 12478 12479Removed the length limit (200) on string objects as per the upcoming ACPI 124803.0A specification. This affects the following areas of the interpreter: 124811) 12482any implicit conversion of a Buffer to a String, 2) a String object 12483result 12484of the ASL Concatenate operator, 3) the String object result of the ASL 12485ToString operator. 12486 12487Fixed a problem in the Windows OS interface layer (OSL) where a 12488WAIT_FOREVER 12489on a semaphore object would incorrectly timeout. This allows the 12490multithreading features of the AcpiExec utility to work properly under 12491Windows. 12492 12493Updated the Linux makefiles for the iASL compiler and AcpiExec to include 12494the recently added file named "utresrc.c". 12495 12496Code and Data Size: The current and previous library sizes for the core 12497subsystem are shown below. These are the code and data sizes for the 12498acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12499These 12500values do not include any ACPI driver or OSPM code. The debug version of 12501the 12502code includes the debug output trace mechanism and has a much larger code 12503and data size. Note that these values will vary depending on the 12504efficiency 12505of the compiler and the compiler options used during generation. 12506 12507 Previous Release: 12508 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 12509 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 12510 Current Release: 12511 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 12512 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 12513 12514 125152) iASL Compiler/Disassembler: 12516 12517Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 12518specification. For the iASL compiler, this means that string literals 12519within 12520the source ASL can be of any length. 12521 12522Enhanced the listing output to dump the AML code for resource descriptors 12523immediately after the ASL code for each descriptor, instead of in a block 12524at 12525the end of the entire resource template. 12526 12527Enhanced the compiler debug output to dump the entire original parse tree 12528constructed during the parse phase, before any transforms are applied to 12529the 12530tree. The transformed tree is dumped also. 12531 12532---------------------------------------- 1253302 November 2005. Summary of changes for version 20051102: 12534 125351) ACPI CA Core Subsystem: 12536 12537Modified the subsystem initialization sequence to improve GPE support. 12538The 12539GPE initialization has been split into two parts in order to defer 12540execution 12541of the _PRW methods (Power Resources for Wake) until after the hardware 12542is 12543fully initialized and the SCI handler is installed. This allows the _PRW 12544methods to access fields protected by the Global Lock. This will fix 12545systems 12546where a NO_GLOBAL_LOCK exception has been seen during initialization. 12547 12548Converted the ACPI internal object disassemble and display code within 12549the 12550AML debugger to fully table-driven operation, reducing code size and 12551increasing maintainability. 12552 12553Fixed a regression with the ConcatenateResTemplate() ASL operator 12554introduced 12555in the 20051021 release. 12556 12557Implemented support for "local" internal ACPI object types within the 12558debugger "Object" command and the AcpiWalkNamespace external interfaces. 12559These local types include RegionFields, BankFields, IndexFields, Alias, 12560and 12561reference objects. 12562 12563Moved common AML resource handling code into a new file, "utresrc.c". 12564This 12565code is shared by both the Resource Manager and the AML Debugger. 12566 12567Code and Data Size: The current and previous library sizes for the core 12568subsystem are shown below. These are the code and data sizes for the 12569acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12570These 12571values do not include any ACPI driver or OSPM code. The debug version of 12572the 12573code includes the debug output trace mechanism and has a much larger code 12574and data size. Note that these values will vary depending on the 12575efficiency 12576of the compiler and the compiler options used during generation. 12577 12578 Previous Release: 12579 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 12580 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 12581 Current Release: 12582 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 12583 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 12584 12585 125862) iASL Compiler/Disassembler: 12587 12588Fixed a problem with very large initializer lists (more than 4000 12589elements) 12590for both Buffer and Package objects where the parse stack could overflow. 12591 12592Enhanced the pre-compile source code scan for non-ASCII characters to 12593ignore 12594characters within comment fields. The scan is now always performed and is 12595no 12596longer optional, detecting invalid characters within a source file 12597immediately rather than during the parse phase or later. 12598 12599Enhanced the ASL grammar definition to force early reductions on all 12600list- 12601style grammar elements so that the overall parse stack usage is greatly 12602reduced. This should improve performance and reduce the possibility of 12603parse 12604stack overflow. 12605 12606Eliminated all reduce/reduce conflicts in the iASL parser generation. 12607Also, 12608with the addition of a %expected statement, the compiler generates from 12609source with no warnings. 12610 12611Fixed a possible segment fault in the disassembler if the input filename 12612does not contain a "dot" extension (Thomas Renninger). 12613 12614---------------------------------------- 1261521 October 2005. Summary of changes for version 20051021: 12616 126171) ACPI CA Core Subsystem: 12618 12619Implemented support for the EM64T and other x86-64 processors. This 12620essentially entails recognizing that these processors support non-aligned 12621memory transfers. Previously, all 64-bit processors were assumed to lack 12622hardware support for non-aligned transfers. 12623 12624Completed conversion of the Resource Manager to nearly full table-driven 12625operation. Specifically, the resource conversion code (convert AML to 12626internal format and the reverse) and the debug code to dump internal 12627resource descriptors are fully table-driven, reducing code and data size 12628and 12629improving maintainability. 12630 12631The OSL interfaces for Acquire and Release Lock now use a 64-bit flag 12632word 12633on 64-bit processors instead of a fixed 32-bit word. (With assistance 12634from 12635Alexey Starikovskiy) 12636 12637Implemented support within the resource conversion code for the Type- 12638Specific byte within the various ACPI 3.0 *WordSpace macros. 12639 12640Fixed some issues within the resource conversion code for the type- 12641specific 12642flags for both Memory and I/O address resource descriptors. For Memory, 12643implemented support for the MTP and TTP flags. For I/O, split the TRS and 12644TTP flags into two separate fields. 12645 12646Code and Data Size: The current and previous library sizes for the core 12647subsystem are shown below. These are the code and data sizes for the 12648acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12649These 12650values do not include any ACPI driver or OSPM code. The debug version of 12651the 12652code includes the debug output trace mechanism and has a much larger code 12653and data size. Note that these values will vary depending on the 12654efficiency 12655of the compiler and the compiler options used during generation. 12656 12657 Previous Release: 12658 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 12659 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 12660 Current Release: 12661 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 12662 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 12663 12664 12665 126662) iASL Compiler/Disassembler: 12667 12668Relaxed a compiler restriction that disallowed a ResourceIndex byte if 12669the 12670corresponding ResourceSource string was not also present in a resource 12671descriptor declaration. This restriction caused problems with existing 12672AML/ASL code that includes the Index byte without the string. When such 12673AML 12674was disassembled, it could not be compiled without modification. Further, 12675the modified code created a resource template with a different size than 12676the 12677original, breaking code that used fixed offsets into the resource 12678template 12679buffer. 12680 12681Removed a recent feature of the disassembler to ignore a lone 12682ResourceIndex 12683byte. This byte is now emitted if present so that the exact AML can be 12684reproduced when the disassembled code is recompiled. 12685 12686Improved comments and text alignment for the resource descriptor code 12687emitted by the disassembler. 12688 12689Implemented disassembler support for the ACPI 3.0 AccessSize field within 12690a 12691Register() resource descriptor. 12692 12693---------------------------------------- 1269430 September 2005. Summary of changes for version 20050930: 12695 126961) ACPI CA Core Subsystem: 12697 12698Completed a major overhaul of the Resource Manager code - specifically, 12699optimizations in the area of the AML/internal resource conversion code. 12700The 12701code has been optimized to simplify and eliminate duplicated code, CPU 12702stack 12703use has been decreased by optimizing function parameters and local 12704variables, and naming conventions across the manager have been 12705standardized 12706for clarity and ease of maintenance (this includes function, parameter, 12707variable, and struct/typedef names.) The update may force changes in some 12708driver code, depending on how resources are handled by the host OS. 12709 12710All Resource Manager dispatch and information tables have been moved to a 12711single location for clarity and ease of maintenance. One new file was 12712created, named "rsinfo.c". 12713 12714The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 12715guarantee that the argument is not evaluated twice, making them less 12716prone 12717to macro side-effects. However, since there exists the possibility of 12718additional stack use if a particular compiler cannot optimize them (such 12719as 12720in the debug generation case), the original macros are optionally 12721available. 12722Note that some invocations of the return_VALUE macro may now cause size 12723mismatch warnings; the return_UINT8 and return_UINT32 macros are provided 12724to 12725eliminate these. (From Randy Dunlap) 12726 12727Implemented a new mechanism to enable debug tracing for individual 12728control 12729methods. A new external interface, AcpiDebugTrace, is provided to enable 12730this mechanism. The intent is to allow the host OS to easily enable and 12731disable tracing for problematic control methods. This interface can be 12732easily exposed to a user or debugger interface if desired. See the file 12733psxface.c for details. 12734 12735AcpiUtCallocate will now return a valid pointer if a length of zero is 12736specified - a length of one is used and a warning is issued. This matches 12737the behavior of AcpiUtAllocate. 12738 12739Code and Data Size: The current and previous library sizes for the core 12740subsystem are shown below. These are the code and data sizes for the 12741acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12742These 12743values do not include any ACPI driver or OSPM code. The debug version of 12744the 12745code includes the debug output trace mechanism and has a much larger code 12746and data size. Note that these values will vary depending on the 12747efficiency 12748of the compiler and the compiler options used during generation. 12749 12750 Previous Release: 12751 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 12752 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 12753 Current Release: 12754 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 12755 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 12756 12757 127582) iASL Compiler/Disassembler: 12759 12760A remark is issued if the effective compile-time length of a package or 12761buffer is zero. Previously, this was a warning. 12762 12763---------------------------------------- 1276416 September 2005. Summary of changes for version 20050916: 12765 127661) ACPI CA Core Subsystem: 12767 12768Fixed a problem within the Resource Manager where support for the Generic 12769Register descriptor was not fully implemented. This descriptor is now 12770fully 12771recognized, parsed, disassembled, and displayed. 12772 12773Completely restructured the Resource Manager code to utilize table-driven 12774dispatch and lookup, eliminating many of the large switch() statements. 12775This 12776reduces overall subsystem code size and code complexity. Affects the 12777resource parsing and construction, disassembly, and debug dump output. 12778 12779Cleaned up and restructured the debug dump output for all resource 12780descriptors. Improved readability of the output and reduced code size. 12781 12782Fixed a problem where changes to internal data structures caused the 12783optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 12784 12785Code and Data Size: The current and previous library sizes for the core 12786subsystem are shown below. These are the code and data sizes for the 12787acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12788These 12789values do not include any ACPI driver or OSPM code. The debug version of 12790the 12791code includes the debug output trace mechanism and has a much larger code 12792and data size. Note that these values will vary depending on the 12793efficiency 12794of the compiler and the compiler options used during generation. 12795 12796 Previous Release: 12797 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 12798 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 12799 Current Release: 12800 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 12801 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 12802 12803 128042) iASL Compiler/Disassembler: 12805 12806Updated the disassembler to automatically insert an EndDependentFn() 12807macro 12808into the ASL stream if this macro is missing in the original AML code, 12809simplifying compilation of the resulting ASL module. 12810 12811Fixed a problem in the disassembler where a disassembled ResourceSource 12812string (within a large resource descriptor) was not surrounded by quotes 12813and 12814not followed by a comma, causing errors when the resulting ASL module was 12815compiled. Also, escape sequences within a ResourceSource string are now 12816handled correctly (especially "\\") 12817 12818---------------------------------------- 1281902 September 2005. Summary of changes for version 20050902: 12820 128211) ACPI CA Core Subsystem: 12822 12823Fixed a problem with the internal Owner ID allocation and deallocation 12824mechanisms for control method execution and recursive method invocation. 12825This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 12826messages seen on some systems. Recursive method invocation depth is 12827currently limited to 255. (Alexey Starikovskiy) 12828 12829Completely eliminated all vestiges of support for the "module-level 12830executable code" until this support is fully implemented and debugged. 12831This 12832should eliminate the NO_RETURN_VALUE exceptions seen during table load on 12833some systems that invoke this support. 12834 12835Fixed a problem within the resource manager code where the transaction 12836flags 12837for a 64-bit address descriptor were handled incorrectly in the type- 12838specific flag byte. 12839 12840Consolidated duplicate code within the address descriptor resource 12841manager 12842code, reducing overall subsystem code size. 12843 12844Fixed a fault when using the AML debugger "disassemble" command to 12845disassemble individual control methods. 12846 12847Removed references to the "release_current" directory within the Unix 12848release package. 12849 12850Code and Data Size: The current and previous core subsystem library sizes 12851are shown below. These are the code and data sizes for the acpica.lib 12852produced by the Microsoft Visual C++ 6.0 compiler. These values do not 12853include any ACPI driver or OSPM code. The debug version of the code 12854includes 12855the debug output trace mechanism and has a much larger code and data 12856size. 12857Note that these values will vary depending on the efficiency of the 12858compiler 12859and the compiler options used during generation. 12860 12861 Previous Release: 12862 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 12863 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 12864 Current Release: 12865 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 12866 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 12867 12868 128692) iASL Compiler/Disassembler: 12870 12871Implemented an error check for illegal duplicate values in the interrupt 12872and 12873dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 12874Interrupt(). 12875 12876Implemented error checking for the Irq() and IrqNoFlags() macros to 12877detect 12878too many values in the interrupt list (16 max) and invalid values in the 12879list (range 0 - 15) 12880 12881The maximum length string literal within an ASL file is now restricted to 12882200 characters as per the ACPI specification. 12883 12884Fixed a fault when using the -ln option (generate namespace listing). 12885 12886Implemented an error check to determine if a DescriptorName within a 12887resource descriptor has already been used within the current scope. 12888 12889---------------------------------------- 1289015 August 2005. Summary of changes for version 20050815: 12891 128921) ACPI CA Core Subsystem: 12893 12894Implemented a full bytewise compare to determine if a table load request 12895is 12896attempting to load a duplicate table. The compare is performed if the 12897table 12898signatures and table lengths match. This will allow different tables with 12899the same OEM Table ID and revision to be loaded - probably against the 12900ACPI 12901specification, but discovered in the field nonetheless. 12902 12903Added the changes.txt logfile to each of the zipped release packages. 12904 12905Code and Data Size: Current and previous core subsystem library sizes are 12906shown below. These are the code and data sizes for the acpica.lib 12907produced 12908by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12909any ACPI driver or OSPM code. The debug version of the code includes the 12910debug output trace mechanism and has a much larger code and data size. 12911Note 12912that these values will vary depending on the efficiency of the compiler 12913and 12914the compiler options used during generation. 12915 12916 Previous Release: 12917 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 12918 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 12919 Current Release: 12920 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 12921 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 12922 12923 129242) iASL Compiler/Disassembler: 12925 12926Fixed a problem where incorrect AML code could be generated for Package 12927objects if optimization is disabled (via the -oa switch). 12928 12929Fixed a problem with where incorrect AML code is generated for variable- 12930length packages when the package length is not specified and the number 12931of 12932initializer values is greater than 255. 12933 12934 12935---------------------------------------- 1293629 July 2005. Summary of changes for version 20050729: 12937 129381) ACPI CA Core Subsystem: 12939 12940Implemented support to ignore an attempt to install/load a particular 12941ACPI 12942table more than once. Apparently there exists BIOS code that repeatedly 12943attempts to load the same SSDT upon certain events. With assistance from 12944Venkatesh Pallipadi. 12945 12946Restructured the main interface to the AML parser in order to correctly 12947handle all exceptional conditions. This will prevent leakage of the 12948OwnerId 12949resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on 12950some 12951machines. With assistance from Alexey Starikovskiy. 12952 12953Support for "module level code" has been disabled in this version due to 12954a 12955number of issues that have appeared on various machines. The support can 12956be 12957enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 12958compilation. When the issues are fully resolved, the code will be enabled 12959by 12960default again. 12961 12962Modified the internal functions for debug print support to define the 12963FunctionName parameter as a (const char *) for compatibility with 12964compiler 12965built-in macros such as __FUNCTION__, etc. 12966 12967Linted the entire ACPICA source tree for both 32-bit and 64-bit. 12968 12969Implemented support to display an object count summary for the AML 12970Debugger 12971commands Object and Methods. 12972 12973Code and Data Size: Current and previous core subsystem library sizes are 12974shown below. These are the code and data sizes for the acpica.lib 12975produced 12976by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12977any ACPI driver or OSPM code. The debug version of the code includes the 12978debug output trace mechanism and has a much larger code and data size. 12979Note 12980that these values will vary depending on the efficiency of the compiler 12981and 12982the compiler options used during generation. 12983 12984 Previous Release: 12985 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 12986 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 12987 Current Release: 12988 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 12989 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 12990 12991 129922) iASL Compiler/Disassembler: 12993 12994Fixed a regression that appeared in the 20050708 version of the compiler 12995where an error message was inadvertently emitted for invocations of the 12996_OSI 12997reserved control method. 12998 12999---------------------------------------- 1300008 July 2005. Summary of changes for version 20050708: 13001 130021) ACPI CA Core Subsystem: 13003 13004The use of the CPU stack in the debug version of the subsystem has been 13005considerably reduced. Previously, a debug structure was declared in every 13006function that used the debug macros. This structure has been removed in 13007favor of declaring the individual elements as parameters to the debug 13008functions. This reduces the cumulative stack use during nested execution 13009of 13010ACPI function calls at the cost of a small increase in the code size of 13011the 13012debug version of the subsystem. With assistance from Alexey Starikovskiy 13013and 13014Len Brown. 13015 13016Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 13017headers to define a macro that will return the current function name at 13018runtime (such as __FUNCTION__ or _func_, etc.) The function name is used 13019by 13020the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 13021compiler-dependent header, the function name is saved on the CPU stack 13022(one 13023pointer per function.) This mechanism is used because apparently there 13024exists no standard ANSI-C defined macro that that returns the function 13025name. 13026 13027Redesigned and reimplemented the "Owner ID" mechanism used to track 13028namespace objects created/deleted by ACPI tables and control method 13029execution. A bitmap is now used to allocate and free the IDs, thus 13030solving 13031the wraparound problem present in the previous implementation. The size 13032of 13033the namespace node descriptor was reduced by 2 bytes as a result (Alexey 13034Starikovskiy). 13035 13036Removed the UINT32_BIT and UINT16_BIT types that were used for the 13037bitfield 13038flag definitions within the headers for the predefined ACPI tables. These 13039have been replaced by UINT8_BIT in order to increase the code portability 13040of 13041the subsystem. If the use of UINT8 remains a problem, we may be forced to 13042eliminate bitfields entirely because of a lack of portability. 13043 13044Enhanced the performance of the AcpiUtUpdateObjectReference procedure. 13045This 13046is a frequently used function and this improvement increases the 13047performance 13048of the entire subsystem (Alexey Starikovskiy). 13049 13050Fixed several possible memory leaks and the inverse - premature object 13051deletion (Alexey Starikovskiy). 13052 13053Code and Data Size: Current and previous core subsystem library sizes are 13054shown below. These are the code and data sizes for the acpica.lib 13055produced 13056by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13057any ACPI driver or OSPM code. The debug version of the code includes the 13058debug output trace mechanism and has a much larger code and data size. 13059Note 13060that these values will vary depending on the efficiency of the compiler 13061and 13062the compiler options used during generation. 13063 13064 Previous Release: 13065 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 13066 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 13067 Current Release: 13068 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 13069 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 13070 13071---------------------------------------- 1307224 June 2005. Summary of changes for version 20050624: 13073 130741) ACPI CA Core Subsystem: 13075 13076Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 13077the host-defined cache object. This allows the OSL implementation to 13078define 13079and type this object in any manner desired, simplifying the OSL 13080implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 13081Linux, and should be defined in the OS-specific header file for other 13082operating systems as required. 13083 13084Changed the interface to AcpiOsAcquireObject to directly return the 13085requested object as the function return (instead of ACPI_STATUS.) This 13086change was made for performance reasons, since this is the purpose of the 13087interface in the first place. AcpiOsAcquireObject is now similar to the 13088AcpiOsAllocate interface. 13089 13090Implemented a new AML debugger command named Businfo. This command 13091displays 13092information about all devices that have an associate _PRT object. The 13093_ADR, 13094_HID, _UID, and _CID are displayed for these devices. 13095 13096Modified the initialization sequence in AcpiInitializeSubsystem to call 13097the 13098OSL interface AcpiOslInitialize first, before any local initialization. 13099This 13100change was required because the global initialization now calls OSL 13101interfaces. 13102 13103Enhanced the Dump command to display the entire contents of Package 13104objects 13105(including all sub-objects and their values.) 13106 13107Restructured the code base to split some files because of size and/or 13108because the code logically belonged in a separate file. New files are 13109listed 13110below. All makefiles and project files included in the ACPI CA release 13111have 13112been updated. 13113 utilities/utcache.c /* Local cache interfaces */ 13114 utilities/utmutex.c /* Local mutex support */ 13115 utilities/utstate.c /* State object support */ 13116 interpreter/parser/psloop.c /* Main AML parse loop */ 13117 13118Code and Data Size: Current and previous core subsystem library sizes are 13119shown below. These are the code and data sizes for the acpica.lib 13120produced 13121by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13122any ACPI driver or OSPM code. The debug version of the code includes the 13123debug output trace mechanism and has a much larger code and data size. 13124Note 13125that these values will vary depending on the efficiency of the compiler 13126and 13127the compiler options used during generation. 13128 13129 Previous Release: 13130 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 13131 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 13132 Current Release: 13133 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 13134 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 13135 13136 131372) iASL Compiler/Disassembler: 13138 13139Fixed a regression introduced in version 20050513 where the use of a 13140Package 13141object within a Case() statement caused a compile time exception. The 13142original behavior has been restored (a Match() operator is emitted.) 13143 13144---------------------------------------- 1314517 June 2005. Summary of changes for version 20050617: 13146 131471) ACPI CA Core Subsystem: 13148 13149Moved the object cache operations into the OS interface layer (OSL) to 13150allow 13151the host OS to handle these operations if desired (for example, the Linux 13152OSL will invoke the slab allocator). This support is optional; the 13153compile 13154time define ACPI_USE_LOCAL_CACHE may be used to utilize the original 13155cache 13156code in the ACPI CA core. The new OSL interfaces are shown below. See 13157utalloc.c for an example implementation, and acpiosxf.h for the exact 13158interface definitions. With assistance from Alexey Starikovskiy. 13159 AcpiOsCreateCache 13160 AcpiOsDeleteCache 13161 AcpiOsPurgeCache 13162 AcpiOsAcquireObject 13163 AcpiOsReleaseObject 13164 13165Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to 13166return 13167and restore a flags parameter. This fits better with many OS lock models. 13168Note: the current execution state (interrupt handler or not) is no longer 13169passed to these interfaces. If necessary, the OSL must determine this 13170state 13171by itself, a simple and fast operation. With assistance from Alexey 13172Starikovskiy. 13173 13174Fixed a problem in the ACPI table handling where a valid XSDT was assumed 13175present if the revision of the RSDP was 2 or greater. According to the 13176ACPI 13177specification, the XSDT is optional in all cases, and the table manager 13178therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 13179Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs 13180contain 13181only the RSDT. 13182 13183Fixed an interpreter problem with the Mid() operator in the case of an 13184input 13185string where the resulting output string is of zero length. It now 13186correctly 13187returns a valid, null terminated string object instead of a string object 13188with a null pointer. 13189 13190Fixed a problem with the control method argument handling to allow a 13191store 13192to an Arg object that already contains an object of type Device. The 13193Device 13194object is now correctly overwritten. Previously, an error was returned. 13195 13196 13197Enhanced the debugger Find command to emit object values in addition to 13198the 13199found object pathnames. The output format is the same as the dump 13200namespace 13201command. 13202 13203Enhanced the debugger Set command. It now has the ability to set the 13204value 13205of any Named integer object in the namespace (Previously, only method 13206locals 13207and args could be set.) 13208 13209Code and Data Size: Current and previous core subsystem library sizes are 13210shown below. These are the code and data sizes for the acpica.lib 13211produced 13212by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13213any ACPI driver or OSPM code. The debug version of the code includes the 13214debug output trace mechanism and has a much larger code and data size. 13215Note 13216that these values will vary depending on the efficiency of the compiler 13217and 13218the compiler options used during generation. 13219 13220 Previous Release: 13221 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 13222 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 13223 Current Release: 13224 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 13225 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 13226 13227 132282) iASL Compiler/Disassembler: 13229 13230Fixed a regression in the disassembler where if/else/while constructs 13231were 13232output incorrectly. This problem was introduced in the previous release 13233(20050526). This problem also affected the single-step disassembly in the 13234debugger. 13235 13236Fixed a problem where compiling the reserved _OSI method would randomly 13237(but 13238rarely) produce compile errors. 13239 13240Enhanced the disassembler to emit compilable code in the face of 13241incorrect 13242AML resource descriptors. If the optional ResourceSourceIndex is present, 13243but the ResourceSource is not, do not emit the ResourceSourceIndex in the 13244disassembly. Otherwise, the resulting code cannot be compiled without 13245errors. 13246 13247---------------------------------------- 1324826 May 2005. Summary of changes for version 20050526: 13249 132501) ACPI CA Core Subsystem: 13251 13252Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 13253the module level (not within a control method.) These opcodes are 13254executed 13255exactly once at the time the table is loaded. This type of code was legal 13256up 13257until the release of ACPI 2.0B (2002) and is now supported within ACPI CA 13258in 13259order to provide backwards compatibility with earlier BIOS 13260implementations. 13261This eliminates the "Encountered executable code at module level" warning 13262that was previously generated upon detection of such code. 13263 13264Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 13265inadvertently be generated during the lookup of namespace objects in the 13266second pass parse of ACPI tables and control methods. It appears that 13267this 13268problem could occur during the resolution of forward references to 13269namespace 13270objects. 13271 13272Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 13273corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 13274allows the deadlock detection debug code to be compiled out in the normal 13275case, improving mutex performance (and overall subsystem performance) 13276considerably. 13277 13278Implemented a handful of miscellaneous fixes for possible memory leaks on 13279error conditions and error handling control paths. These fixes were 13280suggested by FreeBSD and the Coverity Prevent source code analysis tool. 13281 13282Added a check for a null RSDT pointer in AcpiGetFirmwareTable 13283(tbxfroot.c) 13284to prevent a fault in this error case. 13285 13286Code and Data Size: Current and previous core subsystem library sizes are 13287shown below. These are the code and data sizes for the acpica.lib 13288produced 13289by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13290any ACPI driver or OSPM code. The debug version of the code includes the 13291debug output trace mechanism and has a much larger code and data size. 13292Note 13293that these values will vary depending on the efficiency of the compiler 13294and 13295the compiler options used during generation. 13296 13297 Previous Release: 13298 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 13299 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 13300 Current Release: 13301 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 13302 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 13303 13304 133052) iASL Compiler/Disassembler: 13306 13307Implemented support to allow Type 1 and Type 2 ASL operators to appear at 13308the module level (not within a control method.) These operators will be 13309executed once at the time the table is loaded. This type of code was 13310legal 13311up until the release of ACPI 2.0B (2002) and is now supported by the iASL 13312compiler in order to provide backwards compatibility with earlier BIOS 13313ASL 13314code. 13315 13316The ACPI integer width (specified via the table revision ID or the -r 13317override, 32 or 64 bits) is now used internally during compile-time 13318constant 13319folding to ensure that constants are truncated to 32 bits if necessary. 13320Previously, the revision ID value was only emitted in the AML table 13321header. 13322 13323An error message is now generated for the Mutex and Method operators if 13324the 13325SyncLevel parameter is outside the legal range of 0 through 15. 13326 13327Fixed a problem with the Method operator ParameterTypes list handling 13328(ACPI 133293.0). Previously, more than 2 types or 2 arguments generated a syntax 13330error. 13331The actual underlying implementation of method argument typechecking is 13332still under development, however. 13333 13334---------------------------------------- 1333513 May 2005. Summary of changes for version 20050513: 13336 133371) ACPI CA Core Subsystem: 13338 13339Implemented support for PCI Express root bridges -- added support for 13340device 13341PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 13342 13343The interpreter now automatically truncates incoming 64-bit constants to 1334432 13345bits if currently executing out of a 32-bit ACPI table (Revision < 2). 13346This 13347also affects the iASL compiler constant folding. (Note: as per below, the 13348iASL compiler no longer allows 64-bit constants within 32-bit tables.) 13349 13350Fixed a problem where string and buffer objects with "static" pointers 13351(pointers to initialization data within an ACPI table) were not handled 13352consistently. The internal object copy operation now always copies the 13353data 13354to a newly allocated buffer, regardless of whether the source object is 13355static or not. 13356 13357Fixed a problem with the FromBCD operator where an implicit result 13358conversion was improperly performed while storing the result to the 13359target 13360operand. Since this is an "explicit conversion" operator, the implicit 13361conversion should never be performed on the output. 13362 13363Fixed a problem with the CopyObject operator where a copy to an existing 13364named object did not always completely overwrite the existing object 13365stored 13366at name. Specifically, a buffer-to-buffer copy did not delete the 13367existing 13368buffer. 13369 13370Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces 13371and 13372structs for consistency. 13373 13374Code and Data Size: Current and previous core subsystem library sizes are 13375shown below. These are the code and data sizes for the acpica.lib 13376produced 13377by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13378any ACPI driver or OSPM code. The debug version of the code includes the 13379debug output trace mechanism and has a much larger code and data size. 13380Note 13381that these values will vary depending on the efficiency of the compiler 13382and 13383the compiler options used during generation. 13384 13385 Previous Release: 13386 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 13387 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 13388 Current Release: (Same sizes) 13389 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 13390 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 13391 13392 133932) iASL Compiler/Disassembler: 13394 13395The compiler now emits a warning if an attempt is made to generate a 64- 13396bit 13397integer constant from within a 32-bit ACPI table (Revision < 2). The 13398integer 13399is truncated to 32 bits. 13400 13401Fixed a problem with large package objects: if the static length of the 13402package is greater than 255, the "variable length package" opcode is 13403emitted. Previously, this caused an error. This requires an update to the 13404ACPI spec, since it currently (incorrectly) states that packages larger 13405than 13406255 elements are not allowed. 13407 13408The disassembler now correctly handles variable length packages and 13409packages 13410larger than 255 elements. 13411 13412---------------------------------------- 1341308 April 2005. Summary of changes for version 20050408: 13414 134151) ACPI CA Core Subsystem: 13416 13417Fixed three cases in the interpreter where an "index" argument to an ASL 13418function was still (internally) 32 bits instead of the required 64 bits. 13419This was the Index argument to the Index, Mid, and Match operators. 13420 13421The "strupr" function is now permanently local (AcpiUtStrupr), since this 13422is 13423not a POSIX-defined function and not present in most kernel-level C 13424libraries. All references to the C library strupr function have been 13425removed 13426from the headers. 13427 13428Completed the deployment of static functions/prototypes. All prototypes 13429with 13430the static attribute have been moved from the headers to the owning C 13431file. 13432 13433Implemented an extract option (-e) for the AcpiBin utility (AML binary 13434utility). This option allows the utility to extract individual ACPI 13435tables 13436from the output of AcpiDmp. It provides the same functionality of the 13437acpixtract.pl perl script without the worry of setting the correct perl 13438options. AcpiBin runs on Windows and has not yet been generated/validated 13439in 13440the Linux/Unix environment (but should be soon). 13441 13442Updated and fixed the table dump option for AcpiBin (-d). This option 13443converts a single ACPI table to a hex/ascii file, similar to the output 13444of 13445AcpiDmp. 13446 13447Code and Data Size: Current and previous core subsystem library sizes are 13448shown below. These are the code and data sizes for the acpica.lib 13449produced 13450by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13451any ACPI driver or OSPM code. The debug version of the code includes the 13452debug output trace mechanism and has a much larger code and data size. 13453Note 13454that these values will vary depending on the efficiency of the compiler 13455and 13456the compiler options used during generation. 13457 13458 Previous Release: 13459 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 13460 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 13461 Current Release: 13462 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 13463 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 13464 13465 134662) iASL Compiler/Disassembler: 13467 13468Disassembler fix: Added a check to ensure that the table length found in 13469the 13470ACPI table header within the input file is not longer than the actual 13471input 13472file size. This indicates some kind of file or table corruption. 13473 13474---------------------------------------- 1347529 March 2005. Summary of changes for version 20050329: 13476 134771) ACPI CA Core Subsystem: 13478 13479An error is now generated if an attempt is made to create a Buffer Field 13480of 13481length zero (A CreateField with a length operand of zero.) 13482 13483The interpreter now issues a warning whenever executable code at the 13484module 13485level is detected during ACPI table load. This will give some idea of the 13486prevalence of this type of code. 13487 13488Implemented support for references to named objects (other than control 13489methods) within package objects. 13490 13491Enhanced package object output for the debug object. Package objects are 13492now 13493completely dumped, showing all elements. 13494 13495Enhanced miscellaneous object output for the debug object. Any object can 13496now be written to the debug object (for example, a device object can be 13497written, and the type of the object will be displayed.) 13498 13499The "static" qualifier has been added to all local functions across both 13500the 13501core subsystem and the iASL compiler. 13502 13503The number of "long" lines (> 80 chars) within the source has been 13504significantly reduced, by about 1/3. 13505 13506Cleaned up all header files to ensure that all CA/iASL functions are 13507prototyped (even static functions) and the formatting is consistent. 13508 13509Two new header files have been added, acopcode.h and acnames.h. 13510 13511Removed several obsolete functions that were no longer used. 13512 13513Code and Data Size: Current and previous core subsystem library sizes are 13514shown below. These are the code and data sizes for the acpica.lib 13515produced 13516by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13517any ACPI driver or OSPM code. The debug version of the code includes the 13518debug output trace mechanism and has a much larger code and data size. 13519Note 13520that these values will vary depending on the efficiency of the compiler 13521and 13522the compiler options used during generation. 13523 13524 Previous Release: 13525 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 13526 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 13527 Current Release: 13528 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 13529 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 13530 13531 13532 135332) iASL Compiler/Disassembler: 13534 13535Fixed a problem with the resource descriptor generation/support. For the 13536ResourceSourceIndex and the ResourceSource fields, both must be present, 13537or 13538both must be not present - can't have one without the other. 13539 13540The compiler now returns non-zero from the main procedure if any errors 13541have 13542occurred during the compilation. 13543 13544 13545---------------------------------------- 1354609 March 2005. Summary of changes for version 20050309: 13547 135481) ACPI CA Core Subsystem: 13549 13550The string-to-buffer implicit conversion code has been modified again 13551after 13552a change to the ACPI specification. In order to match the behavior of 13553the 13554other major ACPI implementation, the target buffer is no longer truncated 13555if 13556the source string is smaller than an existing target buffer. This change 13557requires an update to the ACPI spec, and should eliminate the recent 13558AE_AML_BUFFER_LIMIT issues. 13559 13560The "implicit return" support was rewritten to a new algorithm that 13561solves 13562the general case. Rather than attempt to determine when a method is about 13563to 13564exit, the result of every ASL operator is saved momentarily until the 13565very 13566next ASL operator is executed. Therefore, no matter how the method exits, 13567there will always be a saved implicit return value. This feature is only 13568enabled with the AcpiGbl_EnableInterpreterSlack flag, and should 13569eliminate 13570AE_AML_NO_RETURN_VALUE errors when enabled. 13571 13572Implemented implicit conversion support for the predicate (operand) of 13573the 13574If, Else, and While operators. String and Buffer arguments are 13575automatically 13576converted to Integers. 13577 13578Changed the string-to-integer conversion behavior to match the new ACPI 13579errata: "If no integer object exists, a new integer is created. The ASCII 13580string is interpreted as a hexadecimal constant. Each string character is 13581interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 13582with the first character as the most significant digit, and ending with 13583the 13584first non-hexadecimal character or end-of-string." This means that the 13585first 13586non-hex character terminates the conversion and this is the code that was 13587changed. 13588 13589Fixed a problem where the ObjectType operator would fail (fault) when 13590used 13591on an Index of a Package which pointed to a null package element. The 13592operator now properly returns zero (Uninitialized) in this case. 13593 13594Fixed a problem where the While operator used excessive memory by not 13595properly popping the result stack during execution. There was no memory 13596leak 13597after execution, however. (Code provided by Valery Podrezov.) 13598 13599Fixed a problem where references to control methods within Package 13600objects 13601caused the method to be invoked, instead of producing a reference object 13602pointing to the method. 13603 13604Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) 13605to 13606improve performance and reduce code size. (Code provided by Alexey 13607Starikovskiy.) 13608 13609Code and Data Size: Current and previous core subsystem library sizes are 13610shown below. These are the code and data sizes for the acpica.lib 13611produced 13612by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13613any ACPI driver or OSPM code. The debug version of the code includes the 13614debug output trace mechanism and has a much larger code and data size. 13615Note 13616that these values will vary depending on the efficiency of the compiler 13617and 13618the compiler options used during generation. 13619 13620 Previous Release: 13621 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 13622 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 13623 Current Release: 13624 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 13625 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 13626 13627 136282) iASL Compiler/Disassembler: 13629 13630Fixed a problem with the Return operator with no arguments. Since the AML 13631grammar for the byte encoding requires an operand for the Return opcode, 13632the 13633compiler now emits a Return(Zero) for this case. An ACPI specification 13634update has been written for this case. 13635 13636For tables other than the DSDT, namepath optimization is automatically 13637disabled. This is because SSDTs can be loaded anywhere in the namespace, 13638the 13639compiler has no knowledge of where, and thus cannot optimize namepaths. 13640 13641Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 13642inadvertently omitted from the ACPI specification, and will require an 13643update to the spec. 13644 13645The source file scan for ASCII characters is now optional (-a). This 13646change 13647was made because some vendors place non-ascii characters within comments. 13648However, the scan is simply a brute-force byte compare to ensure all 13649characters in the file are in the range 0x00 to 0x7F. 13650 13651Fixed a problem with the CondRefOf operator where the compiler was 13652inappropriately checking for the existence of the target. Since the point 13653of 13654the operator is to check for the existence of the target at run-time, the 13655compiler no longer checks for the target existence. 13656 13657Fixed a problem where errors generated from the internal AML interpreter 13658during constant folding were not handled properly, causing a fault. 13659 13660Fixed a problem with overly aggressive range checking for the Stall 13661operator. The valid range (max 255) is now only checked if the operand is 13662of 13663type Integer. All other operand types cannot be statically checked. 13664 13665Fixed a problem where control method references within the RefOf, 13666DeRefOf, 13667and ObjectType operators were not treated properly. They are now treated 13668as 13669actual references, not method invocations. 13670 13671Fixed and enhanced the "list namespace" option (-ln). This option was 13672broken 13673a number of releases ago. 13674 13675Improved error handling for the Field, IndexField, and BankField 13676operators. 13677The compiler now cleanly reports and recovers from errors in the field 13678component (FieldUnit) list. 13679 13680Fixed a disassembler problem where the optional ResourceDescriptor fields 13681TRS and TTP were not always handled correctly. 13682 13683Disassembler - Comments in output now use "//" instead of "/*" 13684 13685---------------------------------------- 1368628 February 2005. Summary of changes for version 20050228: 13687 136881) ACPI CA Core Subsystem: 13689 13690Fixed a problem where the result of an Index() operator (an object 13691reference) must increment the reference count on the target object for 13692the 13693life of the object reference. 13694 13695Implemented AML Interpreter and Debugger support for the new ACPI 3.0 13696Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and 13697WordSpace 13698resource descriptors. 13699 13700Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 13701Space Descriptor" string, indicating interpreter support for the 13702descriptors 13703above. 13704 13705Implemented header support for the new ACPI 3.0 FADT flag bits. 13706 13707Implemented header support for the new ACPI 3.0 PCI Express bits for the 13708PM1 13709status/enable registers. 13710 13711Updated header support for the MADT processor local Apic struct and MADT 13712platform interrupt source struct for new ACPI 3.0 fields. 13713 13714Implemented header support for the SRAT and SLIT ACPI tables. 13715 13716Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" 13717flag 13718at runtime. 13719 13720Code and Data Size: Current and previous core subsystem library sizes are 13721shown below. These are the code and data sizes for the acpica.lib 13722produced 13723by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13724any ACPI driver or OSPM code. The debug version of the code includes the 13725debug output trace mechanism and has a much larger code and data size. 13726Note 13727that these values will vary depending on the efficiency of the compiler 13728and 13729the compiler options used during generation. 13730 13731 Previous Release: 13732 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 13733 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 13734 Current Release: 13735 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 13736 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 13737 13738 137392) iASL Compiler/Disassembler: 13740 13741Fixed a problem with the internal 64-bit String-to-integer conversion 13742with 13743strings less than two characters long. 13744 13745Fixed a problem with constant folding where the result of the Index() 13746operator can not be considered a constant. This means that Index() cannot 13747be 13748a type3 opcode and this will require an update to the ACPI specification. 13749 13750Disassembler: Implemented support for the TTP, MTP, and TRS resource 13751descriptor fields. These fields were inadvertently ignored and not output 13752in 13753the disassembly of the resource descriptor. 13754 13755 13756 ---------------------------------------- 1375711 February 2005. Summary of changes for version 20050211: 13758 137591) ACPI CA Core Subsystem: 13760 13761Implemented ACPI 3.0 support for implicit conversion within the Match() 13762operator. MatchObjects can now be of type integer, buffer, or string 13763instead 13764of just type integer. Package elements are implicitly converted to the 13765type 13766of the MatchObject. This change aligns the behavior of Match() with the 13767behavior of the other logical operators (LLess(), etc.) It also requires 13768an 13769errata change to the ACPI specification as this support was intended for 13770ACPI 3.0, but was inadvertently omitted. 13771 13772Fixed a problem with the internal implicit "to buffer" conversion. 13773Strings 13774that are converted to buffers will cause buffer truncation if the string 13775is 13776smaller than the target buffer. Integers that are converted to buffers 13777will 13778not cause buffer truncation, only zero extension (both as per the ACPI 13779spec.) The problem was introduced when code was added to truncate the 13780buffer, but this should not be performed in all cases, only the string 13781case. 13782 13783Fixed a problem with the Buffer and Package operators where the 13784interpreter 13785would get confused if two such operators were used as operands to an ASL 13786operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 13787stack was not being popped after the execution of these operators, 13788resulting 13789in an AE_NO_RETURN_VALUE exception. 13790 13791Fixed a problem with constructs of the form Store(Index(...),...). The 13792reference object returned from Index was inadvertently resolved to an 13793actual 13794value. This problem was introduced in version 20050114 when the behavior 13795of 13796Store() was modified to restrict the object types that can be used as the 13797source operand (to match the ACPI specification.) 13798 13799Reduced excessive stack use within the AcpiGetObjectInfo procedure. 13800 13801Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 13802 13803Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 13804 13805Code and Data Size: Current and previous core subsystem library sizes are 13806shown below. These are the code and data sizes for the acpica.lib 13807produced 13808by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13809any ACPI driver or OSPM code. The debug version of the code includes the 13810debug output trace mechanism and has a much larger code and data size. 13811Note 13812that these values will vary depending on the efficiency of the compiler 13813and 13814the compiler options used during generation. 13815 13816 Previous Release: 13817 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 13818 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 13819 Current Release: 13820 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 13821 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 13822 13823 138242) iASL Compiler/Disassembler: 13825 13826Fixed a code generation problem in the constant folding optimization code 13827where incorrect code was generated if a constant was reduced to a buffer 13828object (i.e., a reduced type 5 opcode.) 13829 13830Fixed a typechecking problem for the ToBuffer operator. Caused by an 13831incorrect return type in the internal opcode information table. 13832 13833---------------------------------------- 1383425 January 2005. Summary of changes for version 20050125: 13835 138361) ACPI CA Core Subsystem: 13837 13838Fixed a recently introduced problem with the Global Lock where the 13839underlying semaphore was not created. This problem was introduced in 13840version 20050114, and caused an AE_AML_NO_OPERAND exception during an 13841Acquire() operation on _GL. 13842 13843The local object cache is now optional, and is disabled by default. Both 13844AcpiExec and the iASL compiler enable the cache because they run in user 13845mode and this enhances their performance. #define 13846ACPI_ENABLE_OBJECT_CACHE 13847to enable the local cache. 13848 13849Fixed an issue in the internal function AcpiUtEvaluateObject concerning 13850the 13851optional "implicit return" support where an error was returned if no 13852return 13853object was expected, but one was implicitly returned. AE_OK is now 13854returned 13855in this case and the implicitly returned object is deleted. 13856AcpiUtEvaluateObject is only occasionally used, and only to execute 13857reserved 13858methods such as _STA and _INI where the return type is known up front. 13859 13860Fixed a few issues with the internal convert-to-integer code. It now 13861returns 13862an error if an attempt is made to convert a null string, a string of only 13863blanks/tabs, or a zero-length buffer. This affects both implicit 13864conversion 13865and explicit conversion via the ToInteger() operator. 13866 13867The internal debug code in AcpiUtAcquireMutex has been commented out. It 13868is 13869not needed for normal operation and should increase the performance of 13870the 13871entire subsystem. The code remains in case it is needed for debug 13872purposes 13873again. 13874 13875The AcpiExec source and makefile are included in the Unix/Linux package 13876for 13877the first time. 13878 13879Code and Data Size: Current and previous core subsystem library sizes are 13880shown below. These are the code and data sizes for the acpica.lib 13881produced 13882by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13883any ACPI driver or OSPM code. The debug version of the code includes the 13884debug output trace mechanism and has a much larger code and data size. 13885Note 13886that these values will vary depending on the efficiency of the compiler 13887and 13888the compiler options used during generation. 13889 13890 Previous Release: 13891 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 13892 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 13893 Current Release: 13894 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 13895 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 13896 138972) iASL Compiler/Disassembler: 13898 13899Switch/Case support: A warning is now issued if the type of the Switch 13900value 13901cannot be determined at compile time. For example, Switch(Arg0) will 13902generate the warning, and the type is assumed to be an integer. As per 13903the 13904ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate 13905the 13906warning. 13907 13908Switch/Case support: Implemented support for buffer and string objects as 13909the switch value. This is an ACPI 3.0 feature, now that LEqual supports 13910buffers and strings. 13911 13912Switch/Case support: The emitted code for the LEqual() comparisons now 13913uses 13914the switch value as the first operand, not the second. The case value is 13915now 13916the second operand, and this allows the case value to be implicitly 13917converted to the type of the switch value, not the other way around. 13918 13919Switch/Case support: Temporary variables are now emitted immediately 13920within 13921the control method, not at the global level. This means that there are 13922now 1392336 temps available per-method, not 36 temps per-module as was the case 13924with 13925the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 13926 13927---------------------------------------- 1392814 January 2005. Summary of changes for version 20050114: 13929 13930Added 2005 copyright to all module headers. This affects every module in 13931the core subsystem, iASL compiler, and the utilities. 13932 139331) ACPI CA Core Subsystem: 13934 13935Fixed an issue with the String-to-Buffer conversion code where the string 13936null terminator was not included in the buffer after conversion, but 13937there 13938is existing ASL that assumes the string null terminator is included. This 13939is 13940the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 13941introduced in the previous version when the code was updated to correctly 13942set the converted buffer size as per the ACPI specification. The ACPI 13943spec 13944is ambiguous and will be updated to specify that the null terminator must 13945be 13946included in the converted buffer. This also affects the ToBuffer() ASL 13947operator. 13948 13949Fixed a problem with the Mid() ASL/AML operator where it did not work 13950correctly on Buffer objects. Newly created sub-buffers were not being 13951marked 13952as initialized. 13953 13954 13955Fixed a problem in AcpiTbFindTable where incorrect string compares were 13956performed on the OemId and OemTableId table header fields. These fields 13957are 13958not null terminated, so strncmp is now used instead of strcmp. 13959 13960Implemented a restriction on the Store() ASL/AML operator to align the 13961behavior with the ACPI specification. Previously, any object could be 13962used 13963as the source operand. Now, the only objects that may be used are 13964Integers, 13965Buffers, Strings, Packages, Object References, and DDB Handles. If 13966necessary, the original behavior can be restored by enabling the 13967EnableInterpreterSlack flag. 13968 13969Enhanced the optional "implicit return" support to allow an implicit 13970return 13971value from methods that are invoked externally via the AcpiEvaluateObject 13972interface. This enables implicit returns from the _STA and _INI methods, 13973for example. 13974 13975Changed the Revision() ASL/AML operator to return the current version of 13976the 13977AML interpreter, in the YYYYMMDD format. Previously, it incorrectly 13978returned 13979the supported ACPI version (This is the function of the _REV method). 13980 13981Updated the _REV predefined method to return the currently supported 13982version 13983of ACPI, now 3. 13984 13985Implemented batch mode option for the AcpiExec utility (-b). 13986 13987Code and Data Size: Current and previous core subsystem library sizes are 13988shown below. These are the code and data sizes for the acpica.lib 13989produced 13990by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13991any ACPI driver or OSPM code. The debug version of the code includes the 13992debug output trace mechanism and has a much larger code and data size. 13993Note 13994that these values will vary depending on the efficiency of the compiler 13995and 13996the compiler options used during generation. 13997 13998 Previous Release: 13999 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14000 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 14001 Current Release: 14002 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 14003 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 14004 14005---------------------------------------- 1400610 December 2004. Summary of changes for version 20041210: 14007 14008ACPI 3.0 support is nearing completion in both the iASL compiler and the 14009ACPI CA core subsystem. 14010 140111) ACPI CA Core Subsystem: 14012 14013Fixed a problem in the ToDecimalString operator where the resulting 14014string 14015length was incorrectly calculated. The length is now calculated exactly, 14016eliminating incorrect AE_STRING_LIMIT exceptions. 14017 14018Fixed a problem in the ToHexString operator to allow a maximum 200 14019character 14020string to be produced. 14021 14022Fixed a problem in the internal string-to-buffer and buffer-to-buffer 14023copy 14024routine where the length of the resulting buffer was not truncated to the 14025new size (if the target buffer already existed). 14026 14027Code and Data Size: Current and previous core subsystem library sizes are 14028shown below. These are the code and data sizes for the acpica.lib 14029produced 14030by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14031any ACPI driver or OSPM code. The debug version of the code includes the 14032debug output trace mechanism and has a much larger code and data size. 14033Note 14034that these values will vary depending on the efficiency of the compiler 14035and 14036the compiler options used during generation. 14037 14038 Previous Release: 14039 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14040 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 14041 Current Release: 14042 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14043 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 14044 14045 140462) iASL Compiler/Disassembler: 14047 14048Implemented the new ACPI 3.0 resource template macros - DWordSpace, 14049ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 14050Includes support in the disassembler. 14051 14052Implemented support for the new (ACPI 3.0) parameter to the Register 14053macro, 14054AccessSize. 14055 14056Fixed a problem where the _HE resource name for the Interrupt macro was 14057referencing bit 0 instead of bit 1. 14058 14059Implemented check for maximum 255 interrupts in the Interrupt macro. 14060 14061Fixed a problem with the predefined resource descriptor names where 14062incorrect AML code was generated if the offset within the resource buffer 14063was 0 or 1. The optimizer shortened the AML code to a single byte opcode 14064but did not update the surrounding package lengths. 14065 14066Changes to the Dma macro: All channels within the channel list must be 14067in 14068the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 14069optional (default is BusMaster). 14070 14071Implemented check for maximum 7 data bytes for the VendorShort macro. 14072 14073The ReadWrite parameter is now optional for the Memory32 and similar 14074macros. 14075 14076---------------------------------------- 1407703 December 2004. Summary of changes for version 20041203: 14078 140791) ACPI CA Core Subsystem: 14080 14081The low-level field insertion/extraction code (exfldio) has been 14082completely 14083rewritten to eliminate unnecessary complexity, bugs, and boundary 14084conditions. 14085 14086Fixed a problem in the ToInteger, ToBuffer, ToHexString, and 14087ToDecimalString 14088operators where the input operand could be inadvertently deleted if no 14089conversion was necessary (e.g., if the input to ToInteger was an Integer 14090object.) 14091 14092Fixed a problem with the ToDecimalString and ToHexString where an 14093incorrect 14094exception code was returned if the resulting string would be > 200 chars. 14095AE_STRING_LIMIT is now returned. 14096 14097Fixed a problem with the Concatenate operator where AE_OK was always 14098returned, even if the operation failed. 14099 14100Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 14101semaphores to be allocated. 14102 14103Code and Data Size: Current and previous core subsystem library sizes are 14104shown below. These are the code and data sizes for the acpica.lib 14105produced 14106by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14107any ACPI driver or OSPM code. The debug version of the code includes the 14108debug output trace mechanism and has a much larger code and data size. 14109Note 14110that these values will vary depending on the efficiency of the compiler 14111and 14112the compiler options used during generation. 14113 14114 Previous Release: 14115 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 14116 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 14117 Current Release: 14118 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14119 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 14120 14121 141222) iASL Compiler/Disassembler: 14123 14124Fixed typechecking for the ObjectType and SizeOf operators. Problem was 14125recently introduced in 20041119. 14126 14127Fixed a problem with the ToUUID macro where the upper nybble of each 14128buffer 14129byte was inadvertently set to zero. 14130 14131---------------------------------------- 1413219 November 2004. Summary of changes for version 20041119: 14133 141341) ACPI CA Core Subsystem: 14135 14136Fixed a problem in the internal ConvertToInteger routine where new 14137integers 14138were not truncated to 32 bits for 32-bit ACPI tables. This routine 14139converts 14140buffers and strings to integers. 14141 14142Implemented support to store a value to an Index() on a String object. 14143This 14144is an ACPI 2.0 feature that had not yet been implemented. 14145 14146Implemented new behavior for storing objects to individual package 14147elements 14148(via the Index() operator). The previous behavior was to invoke the 14149implicit 14150conversion rules if an object was already present at the index. The new 14151behavior is to simply delete any existing object and directly store the 14152new 14153object. Although the ACPI specification seems unclear on this subject, 14154other 14155ACPI implementations behave in this manner. (This is the root of the 14156AE_BAD_HEX_CONSTANT issue.) 14157 14158Modified the RSDP memory scan mechanism to support the extended checksum 14159for 14160ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 14161RSDP signature is found with a valid checksum. 14162 14163Code and Data Size: Current and previous core subsystem library sizes are 14164shown below. These are the code and data sizes for the acpica.lib 14165produced 14166by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14167any ACPI driver or OSPM code. The debug version of the code includes the 14168debug output trace mechanism and has a much larger code and data size. 14169Note 14170that these values will vary depending on the efficiency of the compiler 14171and 14172the compiler options used during generation. 14173 14174 Previous Release: 14175 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 14176 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 14177 Current Release: 14178 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 14179 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 14180 14181 141822) iASL Compiler/Disassembler: 14183 14184Fixed a missing semicolon in the aslcompiler.y file. 14185 14186---------------------------------------- 1418705 November 2004. Summary of changes for version 20041105: 14188 141891) ACPI CA Core Subsystem: 14190 14191Implemented support for FADT revision 2. This was an interim table 14192(between 14193ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 14194 14195Implemented optional support to allow uninitialized LocalX and ArgX 14196variables in a control method. The variables are initialized to an 14197Integer 14198object with a value of zero. This support is enabled by setting the 14199AcpiGbl_EnableInterpreterSlack flag to TRUE. 14200 14201Implemented support for Integer objects for the SizeOf operator. Either 142024 14203or 8 is returned, depending on the current integer size (32-bit or 64- 14204bit, 14205depending on the parent table revision). 14206 14207Fixed a problem in the implementation of the SizeOf and ObjectType 14208operators 14209where the operand was resolved to a value too early, causing incorrect 14210return values for some objects. 14211 14212Fixed some possible memory leaks during exceptional conditions. 14213 14214Code and Data Size: Current and previous core subsystem library sizes are 14215shown below. These are the code and data sizes for the acpica.lib 14216produced 14217by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14218any ACPI driver or OSPM code. The debug version of the code includes the 14219debug output trace mechanism and has a much larger code and data size. 14220Note 14221that these values will vary depending on the efficiency of the compiler 14222and 14223the compiler options used during generation. 14224 14225 Previous Release: 14226 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 14227 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 14228 Current Release: 14229 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 14230 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 14231 14232 142332) iASL Compiler/Disassembler: 14234 14235Implemented support for all ACPI 3.0 reserved names and methods. 14236 14237Implemented all ACPI 3.0 grammar elements in the front-end, including 14238support for semicolons. 14239 14240Implemented the ACPI 3.0 Function() and ToUUID() macros 14241 14242Fixed a problem in the disassembler where a Scope() operator would not be 14243emitted properly if the target of the scope was in another table. 14244 14245---------------------------------------- 1424615 October 2004. Summary of changes for version 20041015: 14247 14248Note: ACPI CA is currently undergoing an in-depth and complete formal 14249evaluation to test/verify the following areas. Other suggestions are 14250welcome. This will result in an increase in the frequency of releases and 14251the number of bug fixes in the next few months. 14252 - Functional tests for all ASL/AML operators 14253 - All implicit/explicit type conversions 14254 - Bit fields and operation regions 14255 - 64-bit math support and 32-bit-only "truncated" math support 14256 - Exceptional conditions, both compiler and interpreter 14257 - Dynamic object deletion and memory leaks 14258 - ACPI 3.0 support when implemented 14259 - External interfaces to the ACPI subsystem 14260 14261 142621) ACPI CA Core Subsystem: 14263 14264Fixed two alignment issues on 64-bit platforms - within debug statements 14265in 14266AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the 14267Address 14268field within the non-aligned ACPI generic address structure. 14269 14270Fixed a problem in the Increment and Decrement operators where incorrect 14271operand resolution could result in the inadvertent modification of the 14272original integer when the integer is passed into another method as an 14273argument and the arg is then incremented/decremented. 14274 14275Fixed a problem in the FromBCD operator where the upper 32-bits of a 64- 14276bit 14277BCD number were truncated during conversion. 14278 14279Fixed a problem in the ToDecimal operator where the length of the 14280resulting 14281string could be set incorrectly too long if the input operand was a 14282Buffer 14283object. 14284 14285Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte 14286(0) 14287within a buffer would prematurely terminate a compare between buffer 14288objects. 14289 14290Added a check for string overflow (>200 characters as per the ACPI 14291specification) during the Concatenate operator with two string operands. 14292 14293Code and Data Size: Current and previous core subsystem library sizes are 14294shown below. These are the code and data sizes for the acpica.lib 14295produced 14296by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14297any ACPI driver or OSPM code. The debug version of the code includes the 14298debug output trace mechanism and has a much larger code and data size. 14299Note 14300that these values will vary depending on the efficiency of the compiler 14301and 14302the compiler options used during generation. 14303 14304 Previous Release: 14305 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 14306 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 14307 Current Release: 14308 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 14309 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 14310 14311 14312 143132) iASL Compiler/Disassembler: 14314 14315Allow the use of the ObjectType operator on uninitialized Locals and Args 14316(returns 0 as per the ACPI specification). 14317 14318Fixed a problem where the compiler would fault if there was a syntax 14319error 14320in the FieldName of all of the various CreateXXXField operators. 14321 14322Disallow the use of lower case letters within the EISAID macro, as per 14323the 14324ACPI specification. All EISAID strings must be of the form "UUUNNNN" 14325Where 14326U is an uppercase letter and N is a hex digit. 14327 14328 14329---------------------------------------- 1433006 October 2004. Summary of changes for version 20041006: 14331 143321) ACPI CA Core Subsystem: 14333 14334Implemented support for the ACPI 3.0 Timer operator. This ASL function 14335implements a 64-bit timer with 100 nanosecond granularity. 14336 14337Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 14338implement the ACPI 3.0 Timer operator. This allows the host OS to 14339implement 14340the timer with the best clock available. Also, it keeps the core 14341subsystem 14342out of the clock handling business, since the host OS (usually) performs 14343this function. 14344 14345Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 14346functions use a 64-bit address which is part of the packed ACPI Generic 14347Address Structure. Since the structure is non-aligned, the alignment 14348macros 14349are now used to extract the address to a local variable before use. 14350 14351Fixed a problem where the ToInteger operator assumed all input strings 14352were 14353hexadecimal. The operator now handles both decimal strings and hex 14354strings 14355(prefixed with "0x"). 14356 14357Fixed a problem where the string length in the string object created as a 14358result of the internal ConvertToString procedure could be incorrect. This 14359potentially affected all implicit conversions and also the 14360ToDecimalString 14361and ToHexString operators. 14362 14363Fixed two problems in the ToString operator. If the length parameter was 14364zero, an incorrect string object was created and the value of the input 14365length parameter was inadvertently changed from zero to Ones. 14366 14367Fixed a problem where the optional ResourceSource string in the 14368ExtendedIRQ 14369resource macro was ignored. 14370 14371Simplified the interfaces to the internal division functions, reducing 14372code 14373size and complexity. 14374 14375Code and Data Size: Current and previous core subsystem library sizes are 14376shown below. These are the code and data sizes for the acpica.lib 14377produced 14378by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14379any ACPI driver or OSPM code. The debug version of the code includes the 14380debug output trace mechanism and has a much larger code and data size. 14381Note 14382that these values will vary depending on the efficiency of the compiler 14383and 14384the compiler options used during generation. 14385 14386 Previous Release: 14387 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 14388 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 14389 Current Release: 14390 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 14391 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 14392 14393 143942) iASL Compiler/Disassembler: 14395 14396Implemented support for the ACPI 3.0 Timer operator. 14397 14398Fixed a problem where the Default() operator was inadvertently ignored in 14399a 14400Switch/Case block. This was a problem in the translation of the Switch 14401statement to If...Else pairs. 14402 14403Added support to allow a standalone Return operator, with no parentheses 14404(or 14405operands). 14406 14407Fixed a problem with code generation for the ElseIf operator where the 14408translated Else...If parse tree was improperly constructed leading to the 14409loss of some code. 14410 14411---------------------------------------- 1441222 September 2004. Summary of changes for version 20040922: 14413 144141) ACPI CA Core Subsystem: 14415 14416Fixed a problem with the implementation of the LNot() operator where 14417"Ones" 14418was not returned for the TRUE case. Changed the code to return Ones 14419instead 14420of (!Arg) which was usually 1. This change affects iASL constant folding 14421for 14422this operator also. 14423 14424Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was 14425not 14426initialized properly -- Now zero the entire buffer in this case where the 14427buffer already exists. 14428 14429Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 14430Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 14431related code considerably. This will require changes/updates to all OS 14432interface layers (OSLs.) 14433 14434Implemented a new external interface, AcpiInstallExceptionHandler, to 14435allow 14436a system exception handler to be installed. This handler is invoked upon 14437any 14438run-time exception that occurs during control method execution. 14439 14440Added support for the DSDT in AcpiTbFindTable. This allows the 14441DataTableRegion() operator to access the local copy of the DSDT. 14442 14443Code and Data Size: Current and previous core subsystem library sizes are 14444shown below. These are the code and data sizes for the acpica.lib 14445produced 14446by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14447any ACPI driver or OSPM code. The debug version of the code includes the 14448debug output trace mechanism and has a much larger code and data size. 14449Note 14450that these values will vary depending on the efficiency of the compiler 14451and 14452the compiler options used during generation. 14453 14454 Previous Release: 14455 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 14456 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 14457 Current Release: 14458 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 14459 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 14460 14461 144622) iASL Compiler/Disassembler: 14463 14464Fixed a problem with constant folding and the LNot operator. LNot was 14465returning 1 in the TRUE case, not Ones as per the ACPI specification. 14466This 14467could result in the generation of an incorrect folded/reduced constant. 14468 14469End-Of-File is now allowed within a "//"-style comment. A parse error no 14470longer occurs if such a comment is at the very end of the input ASL 14471source 14472file. 14473 14474Implemented the "-r" option to override the Revision in the table header. 14475The initial use of this option will be to simplify the evaluation of the 14476AML 14477interpreter by allowing a single ASL source module to be compiled for 14478either 1447932-bit or 64-bit integers. 14480 14481 14482---------------------------------------- 1448327 August 2004. Summary of changes for version 20040827: 14484 144851) ACPI CA Core Subsystem: 14486 14487- Implemented support for implicit object conversion in the non-numeric 14488logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, 14489and 14490LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 14491the second operand is implicitly converted on the fly to match the type 14492of 14493the first operand. For example: 14494 14495 LEqual (Source1, Source2) 14496 14497Source1 and Source2 must each evaluate to an integer, a string, or a 14498buffer. 14499The data type of Source1 dictates the required type of Source2. Source2 14500is 14501implicitly converted if necessary to match the type of Source1. 14502 14503- Updated and corrected the behavior of the string conversion support. 14504The 14505rules concerning conversion of buffers to strings (according to the ACPI 14506specification) are as follows: 14507 14508ToDecimalString - explicit byte-wise conversion of buffer to string of 14509decimal values (0-255) separated by commas. ToHexString - explicit byte- 14510wise 14511conversion of buffer to string of hex values (0-FF) separated by commas. 14512ToString - explicit byte-wise conversion of buffer to string. Byte-by- 14513byte 14514copy with no transform except NULL terminated. Any other implicit buffer- 14515to- 14516string conversion - byte-wise conversion of buffer to string of hex 14517values 14518(0-FF) separated by spaces. 14519 14520- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 14521 14522- Fixed a problem in AcpiNsGetPathnameLength where the returned length 14523was 14524one byte too short in the case of a node in the root scope. This could 14525cause a fault during debug output. 14526 14527- Code and Data Size: Current and previous core subsystem library sizes 14528are 14529shown below. These are the code and data sizes for the acpica.lib 14530produced 14531by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14532any ACPI driver or OSPM code. The debug version of the code includes the 14533debug output trace mechanism and has a much larger code and data size. 14534Note 14535that these values will vary depending on the efficiency of the compiler 14536and 14537the compiler options used during generation. 14538 14539 Previous Release: 14540 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 14541 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 14542 Current Release: 14543 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 14544 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 14545 14546 145472) iASL Compiler/Disassembler: 14548 14549- Fixed a Linux generation error. 14550 14551 14552---------------------------------------- 1455316 August 2004. Summary of changes for version 20040816: 14554 145551) ACPI CA Core Subsystem: 14556 14557Designed and implemented support within the AML interpreter for the so- 14558called "implicit return". This support returns the result of the last 14559ASL 14560operation within a control method, in the absence of an explicit Return() 14561operator. A few machines depend on this behavior, even though it is not 14562explicitly supported by the ASL language. It is optional support that 14563can 14564be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 14565 14566Removed support for the PCI_Config address space from the internal low 14567level 14568hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 14569support was not used internally, and would not work correctly anyway 14570because 14571the PCI bus number and segment number were not supported. There are 14572separate interfaces for PCI configuration space access because of the 14573unique 14574interface. 14575 14576Code and Data Size: Current and previous core subsystem library sizes are 14577shown below. These are the code and data sizes for the acpica.lib 14578produced 14579by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14580any ACPI driver or OSPM code. The debug version of the code includes the 14581debug output trace mechanism and has a much larger code and data size. 14582Note 14583that these values will vary depending on the efficiency of the compiler 14584and 14585the compiler options used during generation. 14586 14587 Previous Release: 14588 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 14589 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 14590 Current Release: 14591 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 14592 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 14593 14594 145952) iASL Compiler/Disassembler: 14596 14597Fixed a problem where constants in ASL expressions at the root level (not 14598within a control method) could be inadvertently truncated during code 14599generation. This problem was introduced in the 20040715 release. 14600 14601 14602---------------------------------------- 1460315 July 2004. Summary of changes for version 20040715: 14604 146051) ACPI CA Core Subsystem: 14606 14607Restructured the internal HW GPE interfaces to pass/track the current 14608state 14609of interrupts (enabled/disabled) in order to avoid possible deadlock and 14610increase flexibility of the interfaces. 14611 14612Implemented a "lexicographical compare" for String and Buffer objects 14613within 14614the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual - 14615- 14616as per further clarification to the ACPI specification. Behavior is 14617similar 14618to C library "strcmp". 14619 14620Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 14621external function. In the 32-bit non-debug case, the stack use has been 14622reduced from 168 bytes to 32 bytes. 14623 14624Deployed a new run-time configuration flag, 14625AcpiGbl_EnableInterpreterSlack, 14626whose purpose is to allow the AML interpreter to forgive certain bad AML 14627constructs. Default setting is FALSE. 14628 14629Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field 14630IO 14631support code. If enabled, it allows field access to go beyond the end of 14632a 14633region definition if the field is within the region length rounded up to 14634the 14635next access width boundary (a common coding error.) 14636 14637Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 14638ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, 14639these 14640symbols are lowercase by the latest version of the AcpiSrc tool. 14641 14642The prototypes for the PCI interfaces in acpiosxf.h have been updated to 14643rename "Register" to simply "Reg" to prevent certain compilers from 14644complaining. 14645 14646Code and Data Size: Current and previous core subsystem library sizes are 14647shown below. These are the code and data sizes for the acpica.lib 14648produced 14649by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14650any ACPI driver or OSPM code. The debug version of the code includes the 14651debug output trace mechanism and has a much larger code and data size. 14652Note 14653that these values will vary depending on the efficiency of the compiler 14654and 14655the compiler options used during generation. 14656 14657 Previous Release: 14658 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 14659 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 14660 Current Release: 14661 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 14662 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 14663 14664 146652) iASL Compiler/Disassembler: 14666 14667Implemented full support for Package objects within the Case() operator. 14668Note: The Break() operator is currently not supported within Case blocks 14669(TermLists) as there is some question about backward compatibility with 14670ACPI 146711.0 interpreters. 14672 14673 14674Fixed a problem where complex terms were not supported properly within 14675the 14676Switch() operator. 14677 14678Eliminated extraneous warning for compiler-emitted reserved names of the 14679form "_T_x". (Used in Switch/Case operators.) 14680 14681Eliminated optimization messages for "_T_x" objects and small constants 14682within the DefinitionBlock operator. 14683 14684 14685---------------------------------------- 1468615 June 2004. Summary of changes for version 20040615: 14687 146881) ACPI CA Core Subsystem: 14689 14690Implemented support for Buffer and String objects (as per ACPI 2.0) for 14691the 14692following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 14693LLessEqual. 14694 14695All directory names in the entire source package are lower case, as they 14696were in earlier releases. 14697 14698Implemented "Disassemble" command in the AML debugger that will 14699disassemble 14700a single control method. 14701 14702Code and Data Size: Current and previous core subsystem library sizes are 14703shown below. These are the code and data sizes for the acpica.lib 14704produced 14705by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14706any ACPI driver or OSPM code. The debug version of the code includes the 14707debug output trace mechanism and has a much larger code and data size. 14708Note 14709that these values will vary depending on the efficiency of the compiler 14710and 14711the compiler options used during generation. 14712 14713 Previous Release: 14714 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 14715 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 14716 14717 Current Release: 14718 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 14719 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 14720 14721 147222) iASL Compiler/Disassembler: 14723 14724Implemented support for Buffer and String objects (as per ACPI 2.0) for 14725the 14726following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 14727LLessEqual. 14728 14729All directory names in the entire source package are lower case, as they 14730were in earlier releases. 14731 14732Fixed a fault when using the -g or -d<nofilename> options if the FADT was 14733not found. 14734 14735Fixed an issue with the Windows version of the compiler where later 14736versions 14737of Windows place the FADT in the registry under the name "FADT" and not 14738"FACP" as earlier versions did. This applies when using the -g or - 14739d<nofilename> options. The compiler now looks for both strings as 14740necessary. 14741 14742Fixed a problem with compiler namepath optimization where a namepath 14743within 14744the Scope() operator could not be optimized if the namepath was a subpath 14745of 14746the current scope path. 14747 14748---------------------------------------- 1474927 May 2004. Summary of changes for version 20040527: 14750 147511) ACPI CA Core Subsystem: 14752 14753Completed a new design and implementation for EBDA (Extended BIOS Data 14754Area) 14755support in the RSDP scan code. The original code improperly scanned for 14756the 14757EBDA by simply scanning from memory location 0 to 0x400. The correct 14758method 14759is to first obtain the EBDA pointer from within the BIOS data area, then 14760scan 1K of memory starting at the EBDA pointer. There appear to be few 14761if 14762any machines that place the RSDP in the EBDA, however. 14763 14764Integrated a fix for a possible fault during evaluation of BufferField 14765arguments. Obsolete code that was causing the problem was removed. 14766 14767Found and fixed a problem in the Field Support Code where data could be 14768corrupted on a bit field read that starts on an aligned boundary but does 14769not end on an aligned boundary. Merged the read/write "datum length" 14770calculation code into a common procedure. 14771 14772Rolled in a couple of changes to the FreeBSD-specific header. 14773 14774 14775Code and Data Size: Current and previous core subsystem library sizes are 14776shown below. These are the code and data sizes for the acpica.lib 14777produced 14778by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14779any ACPI driver or OSPM code. The debug version of the code includes the 14780debug output trace mechanism and has a much larger code and data size. 14781Note 14782that these values will vary depending on the efficiency of the compiler 14783and 14784the compiler options used during generation. 14785 14786 Previous Release: 14787 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 14788 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 14789 Current Release: 14790 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 14791 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 14792 14793 147942) iASL Compiler/Disassembler: 14795 14796Fixed a generation warning produced by some overly-verbose compilers for 14797a 1479864-bit constant. 14799 14800---------------------------------------- 1480114 May 2004. Summary of changes for version 20040514: 14802 148031) ACPI CA Core Subsystem: 14804 14805Fixed a problem where hardware GPE enable bits sometimes not set properly 14806during and after GPE method execution. Result of 04/27 changes. 14807 14808Removed extra "clear all GPEs" when sleeping/waking. 14809 14810Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 14811AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above 14812to 14813the new AcpiEv* calls as appropriate. 14814 14815ACPI_OS_NAME was removed from the OS-specific headers. The default name 14816is 14817now "Microsoft Windows NT" for maximum compatibility. However this can 14818be 14819changed by modifying the acconfig.h file. 14820 14821Allow a single invocation of AcpiInstallNotifyHandler for a handler that 14822traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 14823 14824Run _INI methods on ThermalZone objects. This is against the ACPI 14825specification, but there is apparently ASL code in the field that has 14826these 14827_INI methods, and apparently "other" AML interpreters execute them. 14828 14829Performed a full 16/32/64 bit lint that resulted in some small changes. 14830 14831Added a sleep simulation command to the AML debugger to test sleep code. 14832 14833Code and Data Size: Current and previous core subsystem library sizes are 14834shown below. These are the code and data sizes for the acpica.lib 14835produced 14836by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14837any ACPI driver or OSPM code. The debug version of the code includes the 14838debug output trace mechanism and has a much larger code and data size. 14839Note 14840that these values will vary depending on the efficiency of the compiler 14841and 14842the compiler options used during generation. 14843 14844 Previous Release: 14845 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 14846 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 14847 Current Release: 14848 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 14849 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 14850 14851---------------------------------------- 1485227 April 2004. Summary of changes for version 20040427: 14853 148541) ACPI CA Core Subsystem: 14855 14856Completed a major overhaul of the GPE handling within ACPI CA. There are 14857now three types of GPEs: wake-only, runtime-only, and combination 14858wake/run. 14859The only GPEs allowed to be combination wake/run are for button-style 14860devices such as a control-method power button, control-method sleep 14861button, 14862or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are 14863not 14864referenced by any _PRW methods are marked for "runtime" and hardware 14865enabled. Any GPE that is referenced by a _PRW method is marked for 14866"wake" 14867(and disabled at runtime). However, at sleep time, only those GPEs that 14868have been specifically enabled for wake via the AcpiEnableGpe interface 14869will 14870actually be hardware enabled. 14871 14872A new external interface has been added, AcpiSetGpeType(), that is meant 14873to 14874be used by device drivers to force a GPE to a particular type. It will 14875be 14876especially useful for the drivers for the button devices mentioned above. 14877 14878Completed restructuring of the ACPI CA initialization sequence so that 14879default operation region handlers are installed before GPEs are 14880initialized 14881and the _PRW methods are executed. This will prevent errors when the 14882_PRW 14883methods attempt to access system memory or I/O space. 14884 14885GPE enable/disable no longer reads the GPE enable register. We now keep 14886the 14887enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 14888thus no longer depend on the hardware to maintain these bits. 14889 14890Always clear the wake status and fixed/GPE status bits before sleep, even 14891for state S5. 14892 14893Improved the AML debugger output for displaying the GPE blocks and their 14894current status. 14895 14896Added new strings for the _OSI method, of the form "Windows 2001 SPx" 14897where 14898x = 0,1,2,3,4. 14899 14900Fixed a problem where the physical address was incorrectly calculated 14901when 14902the Load() operator was used to directly load from an Operation Region 14903(vs. 14904loading from a Field object.) Also added check for minimum table length 14905for 14906this case. 14907 14908Fix for multiple mutex acquisition. Restore original thread SyncLevel on 14909mutex release. 14910 14911Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 14912consistency with the other fields returned. 14913 14914Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 14915structure for each GPE in the system, so the size of this structure is 14916important. 14917 14918CPU stack requirement reduction: Cleaned up the method execution and 14919object 14920evaluation paths so that now a parameter structure is passed, instead of 14921copying the various method parameters over and over again. 14922 14923In evregion.c: Correctly exit and reenter the interpreter region if and 14924only if dispatching an operation region request to a user-installed 14925handler. 14926Do not exit/reenter when dispatching to a default handler (e.g., default 14927system memory or I/O handlers) 14928 14929 14930Notes for updating drivers for the new GPE support. The following 14931changes 14932must be made to ACPI-related device drivers that are attached to one or 14933more 14934GPEs: (This information will be added to the ACPI CA Programmer 14935Reference.) 14936 149371) AcpiInstallGpeHandler no longer automatically enables the GPE, you 14938must 14939explicitly call AcpiEnableGpe. 149402) There is a new interface called AcpiSetGpeType. This should be called 14941before enabling the GPE. Also, this interface will automatically disable 14942the GPE if it is currently enabled. 149433) AcpiEnableGpe no longer supports a GPE type flag. 14944 14945Specific drivers that must be changed: 149461) EC driver: 14947 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 14948AeGpeHandler, NULL); 14949 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 14950 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 14951 149522) Button Drivers (Power, Lid, Sleep): 14953Run _PRW method under parent device 14954If _PRW exists: /* This is a control-method button */ 14955 Extract GPE number and possibly GpeDevice 14956 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 14957 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 14958 14959For all other devices that have _PRWs, we automatically set the GPE type 14960to 14961ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. 14962This 14963must be done on a selective basis, usually requiring some kind of user 14964app 14965to allow the user to pick the wake devices. 14966 14967 14968Code and Data Size: Current and previous core subsystem library sizes are 14969shown below. These are the code and data sizes for the acpica.lib 14970produced 14971by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14972any ACPI driver or OSPM code. The debug version of the code includes the 14973debug output trace mechanism and has a much larger code and data size. 14974Note 14975that these values will vary depending on the efficiency of the compiler 14976and 14977the compiler options used during generation. 14978 14979 Previous Release: 14980 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 14981 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 14982 Current Release: 14983 14984 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 14985 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 14986 14987 14988 14989---------------------------------------- 1499002 April 2004. Summary of changes for version 20040402: 14991 149921) ACPI CA Core Subsystem: 14993 14994Fixed an interpreter problem where an indirect store through an ArgX 14995parameter was incorrectly applying the "implicit conversion rules" during 14996the store. From the ACPI specification: "If the target is a method local 14997or 14998argument (LocalX or ArgX), no conversion is performed and the result is 14999stored directly to the target". The new behavior is to disable implicit 15000conversion during ALL stores to an ArgX. 15001 15002Changed the behavior of the _PRW method scan to ignore any and all errors 15003returned by a given _PRW. This prevents the scan from aborting from the 15004failure of any single _PRW. 15005 15006Moved the runtime configuration parameters from the global init procedure 15007to 15008static variables in acglobal.h. This will allow the host to override the 15009default values easily. 15010 15011Code and Data Size: Current and previous core subsystem library sizes are 15012shown below. These are the code and data sizes for the acpica.lib 15013produced 15014by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15015any ACPI driver or OSPM code. The debug version of the code includes the 15016debug output trace mechanism and has a much larger code and data size. 15017Note 15018that these values will vary depending on the efficiency of the compiler 15019and 15020the compiler options used during generation. 15021 15022 Previous Release: 15023 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 15024 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 15025 Current Release: 15026 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 15027 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 15028 15029 150302) iASL Compiler/Disassembler: 15031 15032iASL now fully disassembles SSDTs. However, External() statements are 15033not 15034generated automatically for unresolved symbols at this time. This is a 15035planned feature for future implementation. 15036 15037Fixed a scoping problem in the disassembler that occurs when the type of 15038the 15039target of a Scope() operator is overridden. This problem caused an 15040incorrectly nested internal namespace to be constructed. 15041 15042Any warnings or errors that are emitted during disassembly are now 15043commented 15044out automatically so that the resulting file can be recompiled without 15045any 15046hand editing. 15047 15048---------------------------------------- 1504926 March 2004. Summary of changes for version 20040326: 15050 150511) ACPI CA Core Subsystem: 15052 15053Implemented support for "wake" GPEs via interaction between GPEs and the 15054_PRW methods. Every GPE that is pointed to by one or more _PRWs is 15055identified as a WAKE GPE and by default will no longer be enabled at 15056runtime. Previously, we were blindly enabling all GPEs with a 15057corresponding 15058_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. 15059We 15060believe this has been the cause of thousands of "spurious" GPEs on some 15061systems. 15062 15063This new GPE behavior is can be reverted to the original behavior (enable 15064ALL GPEs at runtime) via a runtime flag. 15065 15066Fixed a problem where aliased control methods could not access objects 15067properly. The proper scope within the namespace was not initialized 15068(transferred to the target of the aliased method) before executing the 15069target method. 15070 15071Fixed a potential race condition on internal object deletion on the 15072return 15073object in AcpiEvaluateObject. 15074 15075Integrated a fix for resource descriptors where both _MEM and _MTP were 15076being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 15077wide, 0x0F instead of 0x03.) 15078 15079Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, 15080preventing 15081a 15082fault in some cases. 15083 15084Updated Notify() values for debug statements in evmisc.c 15085 15086Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 15087 15088Code and Data Size: Current and previous core subsystem library sizes are 15089shown below. These are the code and data sizes for the acpica.lib 15090produced 15091by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15092any ACPI driver or OSPM code. The debug version of the code includes the 15093debug output trace mechanism and has a much larger code and data size. 15094Note 15095that these values will vary depending on the efficiency of the compiler 15096and 15097the compiler options used during generation. 15098 15099 Previous Release: 15100 15101 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 15102 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 15103 Current Release: 15104 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 15105 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 15106 15107---------------------------------------- 1510811 March 2004. Summary of changes for version 20040311: 15109 151101) ACPI CA Core Subsystem: 15111 15112Fixed a problem where errors occurring during the parse phase of control 15113method execution did not abort cleanly. For example, objects created and 15114installed in the namespace were not deleted. This caused all subsequent 15115invocations of the method to return the AE_ALREADY_EXISTS exception. 15116 15117Implemented a mechanism to force a control method to "Serialized" 15118execution 15119if the method attempts to create namespace objects. (The root of the 15120AE_ALREADY_EXISTS problem.) 15121 15122Implemented support for the predefined _OSI "internal" control method. 15123Initial supported strings are "Linux", "Windows 2000", "Windows 2001", 15124and 15125"Windows 2001.1", and can be easily upgraded for new strings as 15126necessary. 15127This feature will allow "other" operating systems to execute the fully 15128tested, "Windows" code path through the ASL code 15129 15130Global Lock Support: Now allows multiple acquires and releases with any 15131internal thread. Removed concept of "owning thread" for this special 15132mutex. 15133 15134Fixed two functions that were inappropriately declaring large objects on 15135the 15136CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage 15137during 15138method execution considerably. 15139 15140Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 15141S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 15142 15143Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 15144defined on the machine. 15145 15146Implemented two runtime options: One to force all control method 15147execution 15148to "Serialized" to mimic Windows behavior, another to disable _OSI 15149support 15150if it causes problems on a given machine. 15151 15152Code and Data Size: Current and previous core subsystem library sizes are 15153shown below. These are the code and data sizes for the acpica.lib 15154produced 15155by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15156any ACPI driver or OSPM code. The debug version of the code includes the 15157debug output trace mechanism and has a much larger code and data size. 15158Note 15159that these values will vary depending on the efficiency of the compiler 15160and 15161the compiler options used during generation. 15162 15163 Previous Release: 15164 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 15165 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 15166 Current Release: 15167 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 15168 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 15169 151702) iASL Compiler/Disassembler: 15171 15172Fixed an array size problem for FreeBSD that would cause the compiler to 15173fault. 15174 15175---------------------------------------- 1517620 February 2004. Summary of changes for version 20040220: 15177 15178 151791) ACPI CA Core Subsystem: 15180 15181Implemented execution of _SxD methods for Device objects in the 15182GetObjectInfo interface. 15183 15184Fixed calls to _SST method to pass the correct arguments. 15185 15186Added a call to _SST on wake to restore to "working" state. 15187 15188Check for End-Of-Buffer failure case in the WalkResources interface. 15189 15190Integrated fix for 64-bit alignment issue in acglobal.h by moving two 15191structures to the beginning of the file. 15192 15193After wake, clear GPE status register(s) before enabling GPEs. 15194 15195After wake, clear/enable power button. (Perhaps we should clear/enable 15196all 15197fixed events upon wake.) 15198 15199Fixed a couple of possible memory leaks in the Namespace manager. 15200 15201Integrated latest acnetbsd.h file. 15202 15203---------------------------------------- 1520411 February 2004. Summary of changes for version 20040211: 15205 15206 152071) ACPI CA Core Subsystem: 15208 15209Completed investigation and implementation of the call-by-reference 15210mechanism for control method arguments. 15211 15212Fixed a problem where a store of an object into an indexed package could 15213fail if the store occurs within a different method than the method that 15214created the package. 15215 15216Fixed a problem where the ToDecimal operator could return incorrect 15217results. 15218 15219Fixed a problem where the CopyObject operator could fail on some of the 15220more 15221obscure objects (e.g., Reference objects.) 15222 15223Improved the output of the Debug object to display buffer, package, and 15224index objects. 15225 15226Fixed a problem where constructs of the form "RefOf (ArgX)" did not 15227return 15228the expected result. 15229 15230Added permanent ACPI_REPORT_ERROR macros for all instances of the 15231ACPI_AML_INTERNAL exception. 15232 15233Integrated latest version of acfreebsd.h 15234 15235---------------------------------------- 1523616 January 2004. Summary of changes for version 20040116: 15237 15238The purpose of this release is primarily to update the copyright years in 15239each module, thus causing a huge number of diffs. There are a few small 15240functional changes, however. 15241 152421) ACPI CA Core Subsystem: 15243 15244Improved error messages when there is a problem finding one or more of 15245the 15246required base ACPI tables 15247 15248Reintroduced the definition of APIC_HEADER in actbl.h 15249 15250Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 15251 15252Removed extraneous reference to NewObj in dsmthdat.c 15253 152542) iASL compiler 15255 15256Fixed a problem introduced in December that disabled the correct 15257disassembly 15258of Resource Templates 15259 15260 15261---------------------------------------- 1526203 December 2003. Summary of changes for version 20031203: 15263 152641) ACPI CA Core Subsystem: 15265 15266Changed the initialization of Operation Regions during subsystem 15267init to perform two entire walks of the ACPI namespace; The first 15268to initialize the regions themselves, the second to execute the 15269_REG methods. This fixed some interdependencies across _REG 15270methods found on some machines. 15271 15272Fixed a problem where a Store(Local0, Local1) could simply update 15273the object reference count, and not create a new copy of the 15274object if the Local1 is uninitialized. 15275 15276Implemented support for the _SST reserved method during sleep 15277transitions. 15278 15279Implemented support to clear the SLP_TYP and SLP_EN bits when 15280waking up, this is apparently required by some machines. 15281 15282When sleeping, clear the wake status only if SleepState is not S5. 15283 15284Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 15285pointer arithmetic advanced a string pointer too far. 15286 15287Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 15288could be returned if the requested table has not been loaded. 15289 15290Within the support for IRQ resources, restructured the handling of 15291the active and edge/level bits. 15292 15293Fixed a few problems in AcpiPsxExecute() where memory could be 15294leaked under certain error conditions. 15295 15296Improved error messages for the cases where the ACPI mode could 15297not be entered. 15298 15299Code and Data Size: Current and previous core subsystem library 15300sizes are shown below. These are the code and data sizes for the 15301acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 15302these values do not include any ACPI driver or OSPM code. The 15303debug version of the code includes the debug output trace 15304mechanism and has a much larger code and data size. Note that 15305these values will vary depending on the efficiency of the compiler 15306and the compiler options used during generation. 15307 15308 Previous Release (20031029): 15309 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 15310 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 15311 Current Release: 15312 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 15313 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 15314 153152) iASL Compiler/Disassembler: 15316 15317Implemented a fix for the iASL disassembler where a bad index was 15318generated. This was most noticeable on 64-bit platforms 15319 15320 15321---------------------------------------- 1532229 October 2003. Summary of changes for version 20031029: 15323 153241) ACPI CA Core Subsystem: 15325 15326 15327Fixed a problem where a level-triggered GPE with an associated 15328_Lxx control method was incorrectly cleared twice. 15329 15330Fixed a problem with the Field support code where an access can 15331occur beyond the end-of-region if the field is non-aligned but 15332extends to the very end of the parent region (resulted in an 15333AE_AML_REGION_LIMIT exception.) 15334 15335Fixed a problem with ACPI Fixed Events where an RT Clock handler 15336would not get invoked on an RTC event. The RTC event bitmasks for 15337the PM1 registers were not being initialized properly. 15338 15339Implemented support for executing _STA and _INI methods for 15340Processor objects. Although this is currently not part of the 15341ACPI specification, there is existing ASL code that depends on the 15342init-time execution of these methods. 15343 15344Implemented and deployed a GetDescriptorName function to decode 15345the various types of internal descriptors. Guards against null 15346descriptors during debug output also. 15347 15348Implemented and deployed a GetNodeName function to extract the 4- 15349character namespace node name. This function simplifies the debug 15350and error output, as well as guarding against null pointers during 15351output. 15352 15353Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 15354simplify the debug and error output of 64-bit integers. This 15355macro replaces the HIDWORD and LODWORD macros for dumping these 15356integers. 15357 15358Updated the implementation of the Stall() operator to only call 15359AcpiOsStall(), and also return an error if the operand is larger 15360than 255. This preserves the required behavior of not 15361relinquishing the processor, as would happen if AcpiOsSleep() was 15362called for "long stalls". 15363 15364Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 15365initialized are now treated as NOOPs. 15366 15367Cleaned up a handful of warnings during 64-bit generation. 15368 15369Fixed a reported error where and incorrect GPE number was passed 15370to the GPE dispatch handler. This value is only used for error 15371output, however. Used this opportunity to clean up and streamline 15372the GPE dispatch code. 15373 15374Code and Data Size: Current and previous core subsystem library 15375sizes are shown below. These are the code and data sizes for the 15376acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 15377these values do not include any ACPI driver or OSPM code. The 15378 15379debug version of the code includes the debug output trace 15380mechanism and has a much larger code and data size. Note that 15381these values will vary depending on the efficiency of the compiler 15382and the compiler options used during generation. 15383 15384 Previous Release (20031002): 15385 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 15386 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 15387 Current Release: 15388 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 15389 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 15390 15391 153922) iASL Compiler/Disassembler: 15393 15394Updated the iASL compiler to return an error if the operand to the 15395Stall() operator is larger than 255. 15396 15397 15398---------------------------------------- 1539902 October 2003. Summary of changes for version 20031002: 15400 15401 154021) ACPI CA Core Subsystem: 15403 15404Fixed a problem with Index Fields where the index was not 15405incremented for fields that require multiple writes to the 15406index/data registers (Fields that are wider than the data 15407register.) 15408 15409Fixed a problem with all Field objects where a write could go 15410beyond the end-of-field if the field was larger than the access 15411granularity and therefore required multiple writes to complete the 15412request. An extra write beyond the end of the field could happen 15413inadvertently. 15414 15415Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 15416would incorrectly be returned if the width of the Data Register 15417was larger than the specified field access width. 15418 15419Completed fixes for LoadTable() and Unload() and verified their 15420operation. Implemented full support for the "DdbHandle" object 15421throughout the ACPI CA subsystem. 15422 15423Implemented full support for the MADT and ECDT tables in the ACPI 15424CA header files. Even though these tables are not directly 15425consumed by ACPI CA, the header definitions are useful for ACPI 15426device drivers. 15427 15428Integrated resource descriptor fixes posted to the Linux ACPI 15429list. This included checks for minimum descriptor length, and 15430support for trailing NULL strings within descriptors that have 15431optional string elements. 15432 15433Code and Data Size: Current and previous core subsystem library 15434sizes are shown below. These are the code and data sizes for the 15435acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 15436these values do not include any ACPI driver or OSPM code. The 15437debug version of the code includes the debug output trace 15438mechanism and has a much larger code and data size. Note that 15439these values will vary depending on the efficiency of the compiler 15440and the compiler options used during generation. 15441 15442 Previous Release (20030918): 15443 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 15444 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 15445 Current Release: 15446 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 15447 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 15448 15449 154502) iASL Compiler: 15451 15452Implemented detection of non-ASCII characters within the input 15453source ASL file. This catches attempts to compile binary (AML) 15454files early in the compile, with an informative error message. 15455 15456Fixed a problem where the disassembler would fault if the output 15457filename could not be generated or if the output file could not be 15458opened. 15459 15460---------------------------------------- 1546118 September 2003. Summary of changes for version 20030918: 15462 15463 154641) ACPI CA Core Subsystem: 15465 15466Found and fixed a longstanding problem with the late execution of 15467the various deferred AML opcodes (such as Operation Regions, 15468Buffer Fields, Buffers, and Packages). If the name string 15469specified for the name of the new object placed the object in a 15470scope other than the current scope, the initialization/execution 15471of the opcode failed. The solution to this problem was to 15472implement a mechanism where the late execution of such opcodes 15473does not attempt to lookup/create the name a second time in an 15474incorrect scope. This fixes the "region size computed 15475incorrectly" problem. 15476 15477Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 15478Global Lock AE_BAD_PARAMETER error. 15479 15480Fixed several 64-bit issues with prototypes, casting and data 15481types. 15482 15483Removed duplicate prototype from acdisasm.h 15484 15485Fixed an issue involving EC Operation Region Detach (Shaohua Li) 15486 15487Code and Data Size: Current and previous core subsystem library 15488sizes are shown below. These are the code and data sizes for the 15489acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 15490these values do not include any ACPI driver or OSPM code. The 15491debug version of the code includes the debug output trace 15492mechanism and has a much larger code and data size. Note that 15493these values will vary depending on the efficiency of the compiler 15494and the compiler options used during generation. 15495 15496 Previous Release: 15497 15498 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 15499 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 15500 Current Release: 15501 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 15502 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 15503 15504 155052) Linux: 15506 15507Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 15508correct sleep time in seconds. 15509 15510---------------------------------------- 1551114 July 2003. Summary of changes for version 20030619: 15512 155131) ACPI CA Core Subsystem: 15514 15515Parse SSDTs in order discovered, as opposed to reverse order 15516(Hrvoje Habjanic) 15517 15518Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 15519Klausner, 15520 Nate Lawson) 15521 15522 155232) Linux: 15524 15525Dynamically allocate SDT list (suggested by Andi Kleen) 15526 15527proc function return value cleanups (Andi Kleen) 15528 15529Correctly handle NMI watchdog during long stalls (Andrew Morton) 15530 15531Make it so acpismp=force works (reported by Andrew Morton) 15532 15533 15534---------------------------------------- 1553519 June 2003. Summary of changes for version 20030619: 15536 155371) ACPI CA Core Subsystem: 15538 15539Fix To/FromBCD, eliminating the need for an arch-specific #define. 15540 15541Do not acquire a semaphore in the S5 shutdown path. 15542 15543Fix ex_digits_needed for 0. (Takayoshi Kochi) 15544 15545Fix sleep/stall code reversal. (Andi Kleen) 15546 15547Revert a change having to do with control method calling 15548semantics. 15549 155502) Linux: 15551 15552acpiphp update (Takayoshi Kochi) 15553 15554Export acpi_disabled for sonypi (Stelian Pop) 15555 15556Mention acpismp=force in config help 15557 15558Re-add acpitable.c and acpismp=force. This improves backwards 15559 15560compatibility and also cleans up the code to a significant degree. 15561 15562Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 15563 15564---------------------------------------- 1556522 May 2003. Summary of changes for version 20030522: 15566 155671) ACPI CA Core Subsystem: 15568 15569Found and fixed a reported problem where an AE_NOT_FOUND error 15570occurred occasionally during _BST evaluation. This turned out to 15571be an Owner ID allocation issue where a called method did not get 15572a new ID assigned to it. Eventually, (after 64k calls), the Owner 15573ID UINT16 would wraparound so that the ID would be the same as the 15574caller's and the called method would delete the caller's 15575namespace. 15576 15577Implemented extended error reporting for control methods that are 15578aborted due to a run-time exception. Output includes the exact 15579AML instruction that caused the method abort, a dump of the method 15580locals and arguments at the time of the abort, and a trace of all 15581nested control method calls. 15582 15583Modified the interpreter to allow the creation of buffers of zero 15584length from the AML code. Implemented new code to ensure that no 15585attempt is made to actually allocate a memory buffer (of length 15586zero) - instead, a simple buffer object with a NULL buffer pointer 15587and length zero is created. A warning is no longer issued when 15588the AML attempts to create a zero-length buffer. 15589 15590Implemented a workaround for the "leading asterisk issue" in 15591_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 15592asterisk is automatically removed if present in any HID, UID, or 15593CID strings. The iASL compiler will still flag this asterisk as 15594an error, however. 15595 15596Implemented full support for _CID methods that return a package of 15597multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 15598now additionally returns a device _CID list if present. This 15599required a change to the external interface in order to pass an 15600ACPI_BUFFER object as a parameter since the _CID list is of 15601variable length. 15602 15603Fixed a problem with the new AE_SAME_HANDLER exception where 15604handler initialization code did not know about this exception. 15605 15606Code and Data Size: Current and previous core subsystem library 15607sizes are shown below. These are the code and data sizes for the 15608acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 15609these values do not include any ACPI driver or OSPM code. The 15610debug version of the code includes the debug output trace 15611mechanism and has a much larger code and data size. Note that 15612these values will vary depending on the efficiency of the compiler 15613and the compiler options used during generation. 15614 15615 Previous Release (20030509): 15616 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 15617 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 15618 Current Release: 15619 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 15620 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 15621 15622 156232) Linux: 15624 15625Fixed a bug in which we would reinitialize the ACPI interrupt 15626after it was already working, thus disabling all ACPI and the IRQs 15627for any other device sharing the interrupt. (Thanks to Stian 15628Jordet) 15629 15630Toshiba driver update (John Belmonte) 15631 15632Return only 0 or 1 for our interrupt handler status (Andrew 15633Morton) 15634 15635 156363) iASL Compiler: 15637 15638Fixed a reported problem where multiple (nested) ElseIf() 15639statements were not handled correctly by the compiler, resulting 15640in incorrect warnings and incorrect AML code. This was a problem 15641in both the ASL parser and the code generator. 15642 15643 156444) Documentation: 15645 15646Added changes to existing interfaces, new exception codes, and new 15647text concerning reference count object management versus garbage 15648collection. 15649 15650---------------------------------------- 1565109 May 2003. Summary of changes for version 20030509. 15652 15653 156541) ACPI CA Core Subsystem: 15655 15656Changed the subsystem initialization sequence to hold off 15657installation of address space handlers until the hardware has been 15658initialized and the system has entered ACPI mode. This is because 15659the installation of space handlers can cause _REG methods to be 15660run. Previously, the _REG methods could potentially be run before 15661ACPI mode was enabled. 15662 15663Fixed some memory leak issues related to address space handler and 15664notify handler installation. There were some problems with the 15665reference count mechanism caused by the fact that the handler 15666objects are shared across several namespace objects. 15667 15668Fixed a reported problem where reference counts within the 15669namespace were not properly updated when named objects created by 15670method execution were deleted. 15671 15672Fixed a reported problem where multiple SSDTs caused a deletion 15673issue during subsystem termination. Restructured the table data 15674structures to simplify the linked lists and the related code. 15675 15676Fixed a problem where the table ID associated with secondary 15677tables (SSDTs) was not being propagated into the namespace objects 15678created by those tables. This would only present a problem for 15679tables that are unloaded at run-time, however. 15680 15681Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 15682type as the length parameter (instead of UINT32). 15683 15684Solved a long-standing problem where an ALREADY_EXISTS error 15685appears on various systems. This problem could happen when there 15686are multiple PCI_Config operation regions under a single PCI root 15687bus. This doesn't happen very frequently, but there are some 15688systems that do this in the ASL. 15689 15690Fixed a reported problem where the internal DeleteNode function 15691was incorrectly handling the case where a namespace node was the 15692first in the parent's child list, and had additional peers (not 15693the only child, but first in the list of children.) 15694 15695Code and Data Size: Current core subsystem library sizes are shown 15696below. These are the code and data sizes for the acpica.lib 15697produced by the Microsoft Visual C++ 6.0 compiler, and these 15698values do not include any ACPI driver or OSPM code. The debug 15699version of the code includes the debug output trace mechanism and 15700has a much larger code and data size. Note that these values will 15701vary depending on the efficiency of the compiler and the compiler 15702options used during generation. 15703 15704 Previous Release 15705 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 15706 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 15707 Current Release: 15708 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 15709 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 15710 15711 157122) Linux: 15713 15714Allow ":" in OS override string (Ducrot Bruno) 15715 15716Kobject fix (Greg KH) 15717 15718 157193 iASL Compiler/Disassembler: 15720 15721Fixed a problem in the generation of the C source code files (AML 15722is emitted in C source statements for BIOS inclusion) where the 15723Ascii dump that appears within a C comment at the end of each line 15724could cause a compile time error if the AML sequence happens to 15725have an open comment or close comment sequence embedded. 15726 15727 15728---------------------------------------- 1572924 April 2003. Summary of changes for version 20030424. 15730 15731 157321) ACPI CA Core Subsystem: 15733 15734Support for big-endian systems has been implemented. Most of the 15735support has been invisibly added behind big-endian versions of the 15736ACPI_MOVE_* macros. 15737 15738Fixed a problem in AcpiHwDisableGpeBlock() and 15739AcpiHwClearGpeBlock() where an incorrect offset was passed to the 15740low level hardware write routine. The offset parameter was 15741actually eliminated from the low level read/write routines because 15742they had become obsolete. 15743 15744Fixed a problem where a handler object was deleted twice during 15745the removal of a fixed event handler. 15746 15747 157482) Linux: 15749 15750A fix for SMP systems with link devices was contributed by 15751 15752Compaq's Dan Zink. 15753 15754(2.5) Return whether we handled the interrupt in our IRQ handler. 15755(Linux ISRs no longer return void, so we can propagate the handler 15756return value from the ACPI CA core back to the OS.) 15757 15758 15759 157603) Documentation: 15761 15762The ACPI CA Programmer Reference has been updated to reflect new 15763interfaces and changes to existing interfaces. 15764 15765---------------------------------------- 1576628 March 2003. Summary of changes for version 20030328. 15767 157681) ACPI CA Core Subsystem: 15769 15770The GPE Block Device support has been completed. New interfaces 15771are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 15772interfaces (enable, disable, clear, getstatus) have been split 15773into separate interfaces for Fixed Events and General Purpose 15774Events (GPEs) in order to support GPE Block Devices properly. 15775 15776Fixed a problem where the error message "Failed to acquire 15777semaphore" would appear during operations on the embedded 15778controller (EC). 15779 15780Code and Data Size: Current core subsystem library sizes are shown 15781below. These are the code and data sizes for the acpica.lib 15782produced by the Microsoft Visual C++ 6.0 compiler, and these 15783values do not include any ACPI driver or OSPM code. The debug 15784version of the code includes the debug output trace mechanism and 15785has a much larger code and data size. Note that these values will 15786vary depending on the efficiency of the compiler and the compiler 15787options used during generation. 15788 15789 Previous Release 15790 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 15791 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 15792 Current Release: 15793 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 15794 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 15795 15796 15797---------------------------------------- 1579828 February 2003. Summary of changes for version 20030228. 15799 15800 158011) ACPI CA Core Subsystem: 15802 15803The GPE handling and dispatch code has been completely overhauled 15804in preparation for support of GPE Block Devices (ID ACPI0006). 15805This affects internal data structures and code only; there should 15806be no differences visible externally. One new file has been 15807added, evgpeblk.c 15808 15809The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 15810fields that are used to determine the GPE block lengths. The 15811REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 15812structures are ignored. This is per the ACPI specification but it 15813isn't very clear. The full 256 Block 0/1 GPEs are now supported 15814(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 15815 15816In the SCI interrupt handler, removed the read of the PM1_CONTROL 15817register to look at the SCI_EN bit. On some machines, this read 15818causes an SMI event and greatly slows down SCI events. (This may 15819in fact be the cause of slow battery status response on some 15820systems.) 15821 15822Fixed a problem where a store of a NULL string to a package object 15823could cause the premature deletion of the object. This was seen 15824during execution of the battery _BIF method on some systems, 15825resulting in no battery data being returned. 15826 15827Added AcpiWalkResources interface to simplify parsing of resource 15828lists. 15829 15830Code and Data Size: Current core subsystem library sizes are shown 15831below. These are the code and data sizes for the acpica.lib 15832produced by the Microsoft Visual C++ 6.0 compiler, and these 15833values do not include any ACPI driver or OSPM code. The debug 15834version of the code includes the debug output trace mechanism and 15835has a much larger code and data size. Note that these values will 15836vary depending on the efficiency of the compiler and the compiler 15837options used during generation. 15838 15839 Previous Release 15840 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 15841 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 15842 Current Release: 15843 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 15844 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 15845 15846 158472) Linux 15848 15849S3 fixes (Ole Rohne) 15850 15851Update ACPI PHP driver with to use new acpi_walk_resource API 15852(Bjorn Helgaas) 15853 15854Add S4BIOS support (Pavel Machek) 15855 15856Map in entire table before performing checksum (John Stultz) 15857 15858Expand the mem= cmdline to allow the specification of reserved and 15859ACPI DATA blocks (Pavel Machek) 15860 15861Never use ACPI on VISWS 15862 15863Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 15864 15865Revert a change that allowed P_BLK lengths to be 4 or 5. This is 15866causing us to think that some systems support C2 when they really 15867don't. 15868 15869Do not count processor objects for non-present CPUs (Thanks to 15870Dominik Brodowski) 15871 15872 158733) iASL Compiler: 15874 15875Fixed a problem where ASL include files could not be found and 15876opened. 15877 15878Added support for the _PDC reserved name. 15879 15880 15881---------------------------------------- 1588222 January 2003. Summary of changes for version 20030122. 15883 15884 158851) ACPI CA Core Subsystem: 15886 15887Added a check for constructs of the form: Store (Local0, Local0) 15888where Local0 is not initialized. Apparently, some BIOS 15889programmers believe that this is a NOOP. Since this store doesn't 15890do anything anyway, the new prototype behavior will ignore this 15891error. This is a case where we can relax the strict checking in 15892the interpreter in the name of compatibility. 15893 15894 158952) Linux 15896 15897The AcpiSrc Source Conversion Utility has been released with the 15898Linux package for the first time. This is the utility that is 15899used to convert the ACPI CA base source code to the Linux version. 15900 15901(Both) Handle P_BLK lengths shorter than 6 more gracefully 15902 15903(Both) Move more headers to include/acpi, and delete an unused 15904header. 15905 15906(Both) Move drivers/acpi/include directory to include/acpi 15907 15908(Both) Boot functions don't use cmdline, so don't pass it around 15909 15910(Both) Remove include of unused header (Adrian Bunk) 15911 15912(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 15913the 15914former now also includes the latter, acpiphp.h only needs the one, 15915now. 15916 15917(2.5) Make it possible to select method of bios restoring after S3 15918resume. [=> no more ugly ifdefs] (Pavel Machek) 15919 15920(2.5) Make proc write interfaces work (Pavel Machek) 15921 15922(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 15923 15924(2.5) Break out ACPI Perf code into its own module, under cpufreq 15925(Dominik Brodowski) 15926 15927(2.4) S4BIOS support (Ducrot Bruno) 15928 15929(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 15930Visinoni) 15931 15932 159333) iASL Compiler: 15934 15935Added support to disassemble SSDT and PSDTs. 15936 15937Implemented support to obtain SSDTs from the Windows registry if 15938available. 15939 15940 15941---------------------------------------- 1594209 January 2003. Summary of changes for version 20030109. 15943 159441) ACPI CA Core Subsystem: 15945 15946Changed the behavior of the internal Buffer-to-String conversion 15947function. The current ACPI specification states that the contents 15948of the buffer are "converted to a string of two-character 15949hexadecimal numbers, each separated by a space". Unfortunately, 15950this definition is not backwards compatible with existing ACPI 1.0 15951implementations (although the behavior was not defined in the ACPI 159521.0 specification). The new behavior simply copies data from the 15953buffer to the string until a null character is found or the end of 15954the buffer is reached. The new String object is always null 15955terminated. This problem was seen during the generation of _BIF 15956battery data where incorrect strings were returned for battery 15957type, etc. This will also require an errata to the ACPI 15958specification. 15959 15960Renamed all instances of NATIVE_UINT and NATIVE_INT to 15961ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 15962 15963Copyright in all module headers (both Linux and non-Linux) has be 15964updated to 2003. 15965 15966Code and Data Size: Current core subsystem library sizes are shown 15967below. These are the code and data sizes for the acpica.lib 15968produced by the Microsoft Visual C++ 6.0 compiler, and these 15969values do not include any ACPI driver or OSPM code. The debug 15970version of the code includes the debug output trace mechanism and 15971has a much larger code and data size. Note that these values will 15972vary depending on the efficiency of the compiler and the compiler 15973options used during generation. 15974 15975 Previous Release 15976 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 15977 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 15978 Current Release: 15979 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 15980 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 15981 15982 159832) Linux 15984 15985Fixed an oops on module insertion/removal (Matthew Tippett) 15986 15987(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 15988 15989(2.5) Replace pr_debug (Randy Dunlap) 15990 15991(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 15992 15993(Both) Eliminate spawning of thread from timer callback, in favor 15994of schedule_work() 15995 15996(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 15997 15998(Both) Added define for Fixed Function HW region (Matthew Wilcox) 15999 16000(Both) Add missing statics to button.c (Pavel Machek) 16001 16002Several changes have been made to the source code translation 16003utility that generates the Linux Code in order to make the code 16004more "Linux-like": 16005 16006All typedefs on structs and unions have been removed in keeping 16007with the Linux coding style. 16008 16009Removed the non-Linux SourceSafe module revision number from each 16010module header. 16011 16012Completed major overhaul of symbols to be lowercase for linux. 16013Doubled the number of symbols that are lowercase. 16014 16015Fixed a problem where identifiers within procedure headers and 16016within quotes were not fully lower cased (they were left with a 16017starting capital.) 16018 16019Some C macros whose only purpose is to allow the generation of 16- 16020bit code are now completely removed in the Linux code, increasing 16021readability and maintainability. 16022 16023---------------------------------------- 16024 1602512 December 2002. Summary of changes for version 20021212. 16026 16027 160281) ACPI CA Core Subsystem: 16029 16030Fixed a problem where the creation of a zero-length AML Buffer 16031would cause a fault. 16032 16033Fixed a problem where a Buffer object that pointed to a static AML 16034buffer (in an ACPI table) could inadvertently be deleted, causing 16035memory corruption. 16036 16037Fixed a problem where a user buffer (passed in to the external 16038ACPI CA interfaces) could be overwritten if the buffer was too 16039small to complete the operation, causing memory corruption. 16040 16041Fixed a problem in the Buffer-to-String conversion code where a 16042string of length one was always returned, regardless of the size 16043of the input Buffer object. 16044 16045Removed the NATIVE_CHAR data type across the entire source due to 16046lack of need and lack of consistent use. 16047 16048Code and Data Size: Current core subsystem library sizes are shown 16049below. These are the code and data sizes for the acpica.lib 16050produced by the Microsoft Visual C++ 6.0 compiler, and these 16051values do not include any ACPI driver or OSPM code. The debug 16052version of the code includes the debug output trace mechanism and 16053has a much larger code and data size. Note that these values will 16054vary depending on the efficiency of the compiler and the compiler 16055options used during generation. 16056 16057 Previous Release 16058 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 16059 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 16060 Current Release: 16061 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 16062 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 16063 16064 16065---------------------------------------- 1606605 December 2002. Summary of changes for version 20021205. 16067 160681) ACPI CA Core Subsystem: 16069 16070Fixed a problem where a store to a String or Buffer object could 16071cause corruption of the DSDT if the object type being stored was 16072the same as the target object type and the length of the object 16073being stored was equal to or smaller than the original (existing) 16074target object. This was seen to cause corruption of battery _BIF 16075buffers if the _BIF method modified the buffer on the fly. 16076 16077Fixed a problem where an internal error was generated if a control 16078method invocation was used in an OperationRegion, Buffer, or 16079Package declaration. This was caused by the deferred parsing of 16080the control method and thus the deferred creation of the internal 16081method object. The solution to this problem was to create the 16082internal method object at the moment the method is encountered in 16083the first pass - so that subsequent references to the method will 16084able to obtain the required parameter count and thus properly 16085parse the method invocation. This problem presented itself as an 16086AE_AML_INTERNAL during the pass 1 parse phase during table load. 16087 16088Fixed a problem where the internal String object copy routine did 16089not always allocate sufficient memory for the target String object 16090and caused memory corruption. This problem was seen to cause 16091"Allocation already present in list!" errors as memory allocation 16092became corrupted. 16093 16094Implemented a new function for the evaluation of namespace objects 16095that allows the specification of the allowable return object 16096types. This simplifies a lot of code that checks for a return 16097object of one or more specific objects returned from the 16098evaluation (such as _STA, etc.) This may become and external 16099function if it would be useful to ACPI-related drivers. 16100 16101Completed another round of prefixing #defines with "ACPI_" for 16102clarity. 16103 16104Completed additional code restructuring to allow more modular 16105linking for iASL compiler and AcpiExec. Several files were split 16106creating new files. New files: nsparse.c dsinit.c evgpe.c 16107 16108Implemented an abort mechanism to terminate an executing control 16109method via the AML debugger. This feature is useful for debugging 16110control methods that depend (wait) for specific hardware 16111responses. 16112 16113Code and Data Size: Current core subsystem library sizes are shown 16114below. These are the code and data sizes for the acpica.lib 16115produced by the Microsoft Visual C++ 6.0 compiler, and these 16116values do not include any ACPI driver or OSPM code. The debug 16117version of the code includes the debug output trace mechanism and 16118has a much larger code and data size. Note that these values will 16119vary depending on the efficiency of the compiler and the compiler 16120options used during generation. 16121 16122 Previous Release 16123 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 16124 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 16125 Current Release: 16126 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 16127 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 16128 16129 161302) iASL Compiler/Disassembler 16131 16132Fixed a compiler code generation problem for "Interrupt" Resource 16133Descriptors. If specified in the ASL, the optional "Resource 16134Source Index" and "Resource Source" fields were not inserted into 16135the correct location within the AML resource descriptor, creating 16136an invalid descriptor. 16137 16138Fixed a disassembler problem for "Interrupt" resource descriptors. 16139The optional "Resource Source Index" and "Resource Source" fields 16140were ignored. 16141 16142 16143---------------------------------------- 1614422 November 2002. Summary of changes for version 20021122. 16145 16146 161471) ACPI CA Core Subsystem: 16148 16149Fixed a reported problem where an object stored to a Method Local 16150or Arg was not copied to a new object during the store - the 16151object pointer was simply copied to the Local/Arg. This caused 16152all subsequent operations on the Local/Arg to also affect the 16153original source of the store operation. 16154 16155Fixed a problem where a store operation to a Method Local or Arg 16156was not completed properly if the Local/Arg contained a reference 16157(from RefOf) to a named field. The general-purpose store-to- 16158namespace-node code is now used so that this case is handled 16159automatically. 16160 16161Fixed a problem where the internal object copy routine would cause 16162a protection fault if the object being copied was a Package and 16163contained either 1) a NULL package element or 2) a nested sub- 16164package. 16165 16166Fixed a problem with the GPE initialization that resulted from an 16167ambiguity in the ACPI specification. One section of the 16168specification states that both the address and length of the GPE 16169block must be zero if the block is not supported. Another section 16170implies that only the address need be zero if the block is not 16171supported. The code has been changed so that both the address and 16172the length must be non-zero to indicate a valid GPE block (i.e., 16173if either the address or the length is zero, the GPE block is 16174invalid.) 16175 16176Code and Data Size: Current core subsystem library sizes are shown 16177below. These are the code and data sizes for the acpica.lib 16178produced by the Microsoft Visual C++ 6.0 compiler, and these 16179values do not include any ACPI driver or OSPM code. The debug 16180version of the code includes the debug output trace mechanism and 16181has a much larger code and data size. Note that these values will 16182vary depending on the efficiency of the compiler and the compiler 16183options used during generation. 16184 16185 Previous Release 16186 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 16187 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 16188 Current Release: 16189 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 16190 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 16191 16192 161932) Linux 16194 16195Cleaned up EC driver. Exported an external EC read/write 16196interface. By going through this, other drivers (most notably 16197sonypi) will be able to serialize access to the EC. 16198 16199 162003) iASL Compiler/Disassembler 16201 16202Implemented support to optionally generate include files for both 16203ASM and C (the -i switch). This simplifies BIOS development by 16204automatically creating include files that contain external 16205declarations for the symbols that are created within the 16206 16207(optionally generated) ASM and C AML source files. 16208 16209 16210---------------------------------------- 1621115 November 2002. Summary of changes for version 20021115. 16212 162131) ACPI CA Core Subsystem: 16214 16215Fixed a memory leak problem where an error during resolution of 16216 16217method arguments during a method invocation from another method 16218failed to cleanup properly by deleting all successfully resolved 16219argument objects. 16220 16221Fixed a problem where the target of the Index() operator was not 16222correctly constructed if the source object was a package. This 16223problem has not been detected because the use of a target operand 16224with Index() is very rare. 16225 16226Fixed a problem with the Index() operator where an attempt was 16227made to delete the operand objects twice. 16228 16229Fixed a problem where an attempt was made to delete an operand 16230twice during execution of the CondRefOf() operator if the target 16231did not exist. 16232 16233Implemented the first of perhaps several internal create object 16234functions that create and initialize a specific object type. This 16235consolidates duplicated code wherever the object is created, thus 16236shrinking the size of the subsystem. 16237 16238Implemented improved debug/error messages for errors that occur 16239during nested method invocations. All executing method pathnames 16240are displayed (with the error) as the call stack is unwound - thus 16241simplifying debug. 16242 16243Fixed a problem introduced in the 10/02 release that caused 16244premature deletion of a buffer object if a buffer was used as an 16245ASL operand where an integer operand is required (Thus causing an 16246implicit object conversion from Buffer to Integer.) The change in 16247the 10/02 release was attempting to fix a memory leak (albeit 16248incorrectly.) 16249 16250Code and Data Size: Current core subsystem library sizes are shown 16251below. These are the code and data sizes for the acpica.lib 16252produced by the Microsoft Visual C++ 6.0 compiler, and these 16253values do not include any ACPI driver or OSPM code. The debug 16254version of the code includes the debug output trace mechanism and 16255has a much larger code and data size. Note that these values will 16256vary depending on the efficiency of the compiler and the compiler 16257options used during generation. 16258 16259 Previous Release 16260 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 16261 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 16262 Current Release: 16263 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 16264 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 16265 16266 162672) Linux 16268 16269Changed the implementation of the ACPI semaphores to use down() 16270instead of down_interruptable(). It is important that the 16271execution of ACPI control methods not be interrupted by signals. 16272Methods must run to completion, or the system may be left in an 16273unknown/unstable state. 16274 16275Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 16276(Shawn Starr) 16277 16278 162793) iASL Compiler/Disassembler 16280 16281 16282Changed the default location of output files. All output files 16283are now placed in the current directory by default instead of in 16284the directory of the source file. This change may affect some 16285existing makefiles, but it brings the behavior of the compiler in 16286line with other similar tools. The location of the output files 16287can be overridden with the -p command line switch. 16288 16289 16290---------------------------------------- 1629111 November 2002. Summary of changes for version 20021111. 16292 16293 162940) ACPI Specification 2.0B is released and is now available at: 16295http://www.acpi.info/index.html 16296 16297 162981) ACPI CA Core Subsystem: 16299 16300Implemented support for the ACPI 2.0 SMBus Operation Regions. 16301This includes the early detection and handoff of the request to 16302the SMBus region handler (avoiding all of the complex field 16303support code), and support for the bidirectional return packet 16304from an SMBus write operation. This paves the way for the 16305development of SMBus drivers in each host operating system. 16306 16307Fixed a problem where the semaphore WAIT_FOREVER constant was 16308defined as 32 bits, but must be 16 bits according to the ACPI 16309specification. This had the side effect of causing ASL 16310Mutex/Event timeouts even though the ASL code requested a wait 16311forever. Changed all internal references to the ACPI timeout 16312parameter to 16 bits to prevent future problems. Changed the name 16313of WAIT_FOREVER to ACPI_WAIT_FOREVER. 16314 16315Code and Data Size: Current core subsystem library sizes are shown 16316below. These are the code and data sizes for the acpica.lib 16317produced by the Microsoft Visual C++ 6.0 compiler, and these 16318values do not include any ACPI driver or OSPM code. The debug 16319version of the code includes the debug output trace mechanism and 16320has a much larger code and data size. Note that these values will 16321vary depending on the efficiency of the compiler and the compiler 16322options used during generation. 16323 16324 Previous Release 16325 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 16326 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 16327 Current Release: 16328 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 16329 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 16330 16331 163322) Linux 16333 16334Module loading/unloading fixes (John Cagle) 16335 16336 163373) iASL Compiler/Disassembler 16338 16339Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 16340 16341Implemented support for the disassembly of all SMBus protocol 16342keywords (SMBQuick, SMBWord, etc.) 16343 16344---------------------------------------- 1634501 November 2002. Summary of changes for version 20021101. 16346 16347 163481) ACPI CA Core Subsystem: 16349 16350Fixed a problem where platforms that have a GPE1 block but no GPE0 16351block were not handled correctly. This resulted in a "GPE 16352overlap" error message. GPE0 is no longer required. 16353 16354Removed code added in the previous release that inserted nodes 16355into the namespace in alphabetical order. This caused some side- 16356effects on various machines. The root cause of the problem is 16357still under investigation since in theory, the internal ordering 16358of the namespace nodes should not matter. 16359 16360 16361Enhanced error reporting for the case where a named object is not 16362found during control method execution. The full ACPI namepath 16363(name reference) of the object that was not found is displayed in 16364this case. 16365 16366Note: as a result of the overhaul of the namespace object types in 16367the previous release, the namespace nodes for the predefined 16368scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 16369instead of ACPI_TYPE_ANY. This simplifies the namespace 16370management code but may affect code that walks the namespace tree 16371looking for specific object types. 16372 16373Code and Data Size: Current core subsystem library sizes are shown 16374below. These are the code and data sizes for the acpica.lib 16375produced by the Microsoft Visual C++ 6.0 compiler, and these 16376values do not include any ACPI driver or OSPM code. The debug 16377version of the code includes the debug output trace mechanism and 16378has a much larger code and data size. Note that these values will 16379vary depending on the efficiency of the compiler and the compiler 16380options used during generation. 16381 16382 Previous Release 16383 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 16384 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 16385 Current Release: 16386 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 16387 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 16388 16389 163902) Linux 16391 16392Fixed a problem introduced in the previous release where the 16393Processor and Thermal objects were not recognized and installed in 16394/proc. This was related to the scope type change described above. 16395 16396 163973) iASL Compiler/Disassembler 16398 16399Implemented the -g option to get all of the required ACPI tables 16400from the registry and save them to files (Windows version of the 16401compiler only.) The required tables are the FADT, FACS, and DSDT. 16402 16403Added ACPI table checksum validation during table disassembly in 16404order to catch corrupted tables. 16405 16406 16407---------------------------------------- 1640822 October 2002. Summary of changes for version 20021022. 16409 164101) ACPI CA Core Subsystem: 16411 16412Implemented a restriction on the Scope operator that the target 16413must already exist in the namespace at the time the operator is 16414encountered (during table load or method execution). In other 16415words, forward references are not allowed and Scope() cannot 16416create a new object. This changes the previous behavior where the 16417interpreter would create the name if not found. This new behavior 16418correctly enables the search-to-root algorithm during namespace 16419lookup of the target name. Because of this upsearch, this fixes 16420the known Compaq _SB_.OKEC problem and makes both the AML 16421interpreter and iASL compiler compatible with other ACPI 16422implementations. 16423 16424Completed a major overhaul of the internal ACPI object types for 16425the ACPI Namespace and the associated operand objects. Many of 16426these types had become obsolete with the introduction of the two- 16427pass namespace load. This cleanup simplifies the code and makes 16428the entire namespace load mechanism much clearer and easier to 16429understand. 16430 16431Improved debug output for tracking scope opening/closing to help 16432diagnose scoping issues. The old scope name as well as the new 16433scope name are displayed. Also improved error messages for 16434problems with ASL Mutex objects and error messages for GPE 16435problems. 16436 16437Cleaned up the namespace dump code, removed obsolete code. 16438 16439All string output (for all namespace/object dumps) now uses the 16440common ACPI string output procedure which handles escapes properly 16441and does not emit non-printable characters. 16442 16443Fixed some issues with constants in the 64-bit version of the 16444local C library (utclib.c) 16445 16446 164472) Linux 16448 16449EC Driver: No longer attempts to acquire the Global Lock at 16450interrupt level. 16451 16452 164533) iASL Compiler/Disassembler 16454 16455Implemented ACPI 2.0B grammar change that disallows all Type 1 and 164562 opcodes outside of a control method. This means that the 16457"executable" operators (versus the "namespace" operators) cannot 16458be used at the table level; they can only be used within a control 16459method. 16460 16461Implemented the restriction on the Scope() operator where the 16462target must already exist in the namespace at the time the 16463operator is encountered (during ASL compilation). In other words, 16464forward references are not allowed and Scope() cannot create a new 16465object. This makes the iASL compiler compatible with other ACPI 16466implementations and makes the Scope() implementation adhere to the 16467ACPI specification. 16468 16469Fixed a problem where namepath optimization for the Alias operator 16470was optimizing the wrong path (of the two namepaths.) This caused 16471a "Missing alias link" error message. 16472 16473Fixed a problem where an "unknown reserved name" warning could be 16474incorrectly generated for names like "_SB" when the trailing 16475underscore is not used in the original ASL. 16476 16477Fixed a problem where the reserved name check did not handle 16478NamePaths with multiple NameSegs correctly. The first nameseg of 16479the NamePath was examined instead of the last NameSeg. 16480 16481 16482---------------------------------------- 16483 1648402 October 2002. Summary of changes for this release. 16485 16486 164871) ACPI CA Core Subsystem version 20021002: 16488 16489Fixed a problem where a store/copy of a string to an existing 16490string did not always set the string length properly in the String 16491object. 16492 16493Fixed a reported problem with the ToString operator where the 16494behavior was identical to the ToHexString operator instead of just 16495simply converting a raw buffer to a string data type. 16496 16497Fixed a problem where CopyObject and the other "explicit" 16498conversion operators were not updating the internal namespace node 16499type as part of the store operation. 16500 16501Fixed a memory leak during implicit source operand conversion 16502where the original object was not deleted if it was converted to a 16503new object of a different type. 16504 16505Enhanced error messages for all problems associated with namespace 16506lookups. Common procedure generates and prints the lookup name as 16507well as the formatted status. 16508 16509Completed implementation of a new design for the Alias support 16510within the namespace. The existing design did not handle the case 16511where a new object was assigned to one of the two names due to the 16512use of an explicit conversion operator, resulting in the two names 16513pointing to two different objects. The new design simply points 16514the Alias name to the original name node - not to the object. 16515This results in a level of indirection that must be handled in the 16516name resolution mechanism. 16517 16518Code and Data Size: Current core subsystem library sizes are shown 16519below. These are the code and data sizes for the acpica.lib 16520produced by the Microsoft Visual C++ 6.0 compiler, and these 16521values do not include any ACPI driver or OSPM code. The debug 16522version of the code includes the debug output trace mechanism and 16523has a larger code and data size. Note that these values will vary 16524depending on the efficiency of the compiler and the compiler 16525options used during generation. 16526 16527 Previous Release 16528 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 16529 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 16530 Current Release: 16531 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 16532 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 16533 16534 165352) Linux 16536 16537Initialize thermal driver's timer before it is used. (Knut 16538Neumann) 16539 16540Allow handling negative celsius values. (Kochi Takayoshi) 16541 16542Fix thermal management and make trip points. R/W (Pavel Machek) 16543 16544Fix /proc/acpi/sleep. (P. Christeas) 16545 16546IA64 fixes. (David Mosberger) 16547 16548Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 16549 16550Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 16551Brodowski) 16552 16553 165543) iASL Compiler/Disassembler 16555 16556Clarified some warning/error messages. 16557 16558 16559---------------------------------------- 1656018 September 2002. Summary of changes for this release. 16561 16562 165631) ACPI CA Core Subsystem version 20020918: 16564 16565Fixed a reported problem with reference chaining (via the Index() 16566and RefOf() operators) in the ObjectType() and SizeOf() operators. 16567The definition of these operators includes the dereferencing of 16568all chained references to return information on the base object. 16569 16570Fixed a problem with stores to indexed package elements - the 16571existing code would not complete the store if an "implicit 16572conversion" was not performed. In other words, if the existing 16573object (package element) was to be replaced completely, the code 16574didn't handle this case. 16575 16576Relaxed typechecking on the ASL "Scope" operator to allow the 16577target name to refer to an object of type Integer, String, or 16578Buffer, in addition to the scoping object types (Device, 16579predefined Scopes, Processor, PowerResource, and ThermalZone.) 16580This allows existing AML code that has workarounds for a bug in 16581Windows to function properly. A warning is issued, however. This 16582affects both the AML interpreter and the iASL compiler. Below is 16583an example of this type of ASL code: 16584 16585 Name(DEB,0x00) 16586 Scope(DEB) 16587 { 16588 16589Fixed some reported problems with 64-bit integer support in the 16590local implementation of C library functions (clib.c) 16591 16592 165932) Linux 16594 16595Use ACPI fix map region instead of IOAPIC region, since it is 16596undefined in non-SMP. 16597 16598Ensure that the SCI has the proper polarity and trigger, even on 16599systems that do not have an interrupt override entry in the MADT. 16600 166012.5 big driver reorganization (Pat Mochel) 16602 16603Use early table mapping code from acpitable.c (Andi Kleen) 16604 16605New blacklist entries (Andi Kleen) 16606 16607Blacklist improvements. Split blacklist code out into a separate 16608file. Move checking the blacklist to very early. Previously, we 16609would use ACPI tables, and then halfway through init, check the 16610blacklist -- too late. Now, it's early enough to completely fall- 16611back to non-ACPI. 16612 16613 166143) iASL Compiler/Disassembler version 20020918: 16615 16616Fixed a problem where the typechecking code didn't know that an 16617alias could point to a method. In other words, aliases were not 16618being dereferenced during typechecking. 16619 16620 16621---------------------------------------- 1662229 August 2002. Summary of changes for this release. 16623 166241) ACPI CA Core Subsystem Version 20020829: 16625 16626If the target of a Scope() operator already exists, it must be an 16627object type that actually opens a scope -- such as a Device, 16628Method, Scope, etc. This is a fatal runtime error. Similar error 16629check has been added to the iASL compiler also. 16630 16631Tightened up the namespace load to disallow multiple names in the 16632same scope. This previously was allowed if both objects were of 16633the same type. (i.e., a lookup was the same as entering a new 16634name). 16635 16636 166372) Linux 16638 16639Ensure that the ACPI interrupt has the proper trigger and 16640polarity. 16641 16642local_irq_disable is extraneous. (Matthew Wilcox) 16643 16644Make "acpi=off" actually do what it says, and not use the ACPI 16645interpreter *or* the tables. 16646 16647Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 16648Takayoshi) 16649 16650 166513) iASL Compiler/Disassembler Version 20020829: 16652 16653Implemented namepath optimization for name declarations. For 16654example, a declaration like "Method (\_SB_.ABCD)" would get 16655optimized to "Method (ABCD)" if the declaration is within the 16656\_SB_ scope. This optimization is in addition to the named 16657reference path optimization first released in the previous 16658version. This would seem to complete all possible optimizations 16659for namepaths within the ASL/AML. 16660 16661If the target of a Scope() operator already exists, it must be an 16662object type that actually opens a scope -- such as a Device, 16663Method, Scope, etc. 16664 16665Implemented a check and warning for unreachable code in the same 16666block below a Return() statement. 16667 16668Fixed a problem where the listing file was not generated if the 16669compiler aborted if the maximum error count was exceeded (200). 16670 16671Fixed a problem where the typechecking of method return values was 16672broken. This includes the check for a return value when the 16673method is invoked as a TermArg (a return value is expected.) 16674 16675Fixed a reported problem where EOF conditions during a quoted 16676string or comment caused a fault. 16677 16678 16679---------------------------------------- 1668015 August 2002. Summary of changes for this release. 16681 166821) ACPI CA Core Subsystem Version 20020815: 16683 16684Fixed a reported problem where a Store to a method argument that 16685contains a reference did not perform the indirect store correctly. 16686This problem was created during the conversion to the new 16687reference object model - the indirect store to a method argument 16688code was not updated to reflect the new model. 16689 16690Reworked the ACPI mode change code to better conform to ACPI 2.0, 16691handle corner cases, and improve code legibility (Kochi Takayoshi) 16692 16693Fixed a problem with the pathname parsing for the carat (^) 16694prefix. The heavy use of the carat operator by the new namepath 16695optimization in the iASL compiler uncovered a problem with the AML 16696interpreter handling of this prefix. In the case where one or 16697more carats precede a single nameseg, the nameseg was treated as 16698standalone and the search rule (to root) was inadvertently 16699applied. This could cause both the iASL compiler and the 16700interpreter to find the wrong object or to miss the error that 16701should occur if the object does not exist at that exact pathname. 16702 16703Found and fixed the problem where the HP Pavilion DSDT would not 16704load. This was a relatively minor tweak to the table loading code 16705(a problem caused by the unexpected encounter with a method 16706invocation not within a control method), but it does not solve the 16707overall issue of the execution of AML code at the table level. 16708This investigation is still ongoing. 16709 16710Code and Data Size: Current core subsystem library sizes are shown 16711below. These are the code and data sizes for the acpica.lib 16712produced by the Microsoft Visual C++ 6.0 compiler, and these 16713values do not include any ACPI driver or OSPM code. The debug 16714version of the code includes the debug output trace mechanism and 16715has a larger code and data size. Note that these values will vary 16716depending on the efficiency of the compiler and the compiler 16717options used during generation. 16718 16719 Previous Release 16720 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 16721 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 16722 Current Release: 16723 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 16724 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 16725 16726 167272) Linux 16728 16729Remove redundant slab.h include (Brad Hards) 16730 16731Fix several bugs in thermal.c (Herbert Nachtnebel) 16732 16733Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 16734 16735Change acpi_system_suspend to use updated irq functions (Pavel 16736Machek) 16737 16738Export acpi_get_firmware_table (Matthew Wilcox) 16739 16740Use proper root proc entry for ACPI (Kochi Takayoshi) 16741 16742Fix early-boot table parsing (Bjorn Helgaas) 16743 16744 167453) iASL Compiler/Disassembler 16746 16747Reworked the compiler options to make them more consistent and to 16748use two-letter options where appropriate. We were running out of 16749sensible letters. This may break some makefiles, so check the 16750current options list by invoking the compiler with no parameters. 16751 16752Completed the design and implementation of the ASL namepath 16753optimization option for the compiler. This option optimizes all 16754references to named objects to the shortest possible path. The 16755first attempt tries to utilize a single nameseg (4 characters) and 16756the "search-to-root" algorithm used by the interpreter. If that 16757cannot be used (because either the name is not in the search path 16758or there is a conflict with another object with the same name), 16759the pathname is optimized using the carat prefix (usually a 16760shorter string than specifying the entire path from the root.) 16761 16762Implemented support to obtain the DSDT from the Windows registry 16763(when the disassembly option is specified with no input file). 16764Added this code as the implementation for AcpiOsTableOverride in 16765the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 16766utility) to scan memory for the DSDT to the AcpiOsTableOverride 16767function in the DOS OSL to make the disassembler truly OS 16768independent. 16769 16770Implemented a new option to disassemble and compile in one step. 16771When used without an input filename, this option will grab the 16772DSDT from the local machine, disassemble it, and compile it in one 16773step. 16774 16775Added a warning message for invalid escapes (a backslash followed 16776by any character other than the allowable escapes). This catches 16777the quoted string error "\_SB_" (which should be "\\_SB_" ). 16778 16779Also, there are numerous instances in the ACPI specification where 16780this error occurs. 16781 16782Added a compiler option to disable all optimizations. This is 16783basically the "compatibility mode" because by using this option, 16784the AML code will come out exactly the same as other ASL 16785compilers. 16786 16787Added error messages for incorrectly ordered dependent resource 16788functions. This includes: missing EndDependentFn macro at end of 16789dependent resource list, nested dependent function macros (both 16790start and end), and missing StartDependentFn macro. These are 16791common errors that should be caught at compile time. 16792 16793Implemented _OSI support for the disassembler and compiler. _OSI 16794must be included in the namespace for proper disassembly (because 16795the disassembler must know the number of arguments.) 16796 16797Added an "optimization" message type that is optional (off by 16798default). This message is used for all optimizations - including 16799constant folding, integer optimization, and namepath optimization. 16800 16801---------------------------------------- 1680225 July 2002. Summary of changes for this release. 16803 16804 168051) ACPI CA Core Subsystem Version 20020725: 16806 16807The AML Disassembler has been enhanced to produce compilable ASL 16808code and has been integrated into the iASL compiler (see below) as 16809well as the single-step disassembly for the AML debugger and the 16810disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 16811resource templates and macros are fully supported. The 16812disassembler has been tested on over 30 different AML files, 16813producing identical AML when the resulting disassembled ASL file 16814is recompiled with the same ASL compiler. 16815 16816Modified the Resource Manager to allow zero interrupts and zero 16817dma channels during the GetCurrentResources call. This was 16818causing problems on some platforms. 16819 16820Added the AcpiOsRedirectOutput interface to the OSL to simplify 16821output redirection for the AcpiOsPrintf and AcpiOsVprintf 16822interfaces. 16823 16824Code and Data Size: Current core subsystem library sizes are shown 16825below. These are the code and data sizes for the acpica.lib 16826produced by the Microsoft Visual C++ 6.0 compiler, and these 16827values do not include any ACPI driver or OSPM code. The debug 16828version of the code includes the debug output trace mechanism and 16829has a larger code and data size. Note that these values will vary 16830depending on the efficiency of the compiler and the compiler 16831options used during generation. 16832 16833 Previous Release 16834 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 16835 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 16836 Current Release: 16837 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 16838 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 16839 16840 168412) Linux 16842 16843Fixed a panic in the EC driver (Dominik Brodowski) 16844 16845Implemented checksum of the R/XSDT itself during Linux table scan 16846(Richard Schaal) 16847 16848 168493) iASL compiler 16850 16851The AML disassembler is integrated into the compiler. The "-d" 16852option invokes the disassembler to completely disassemble an 16853input AML file, producing as output a text ASL file with the 16854extension ".dsl" (to avoid name collisions with existing .asl 16855source files.) A future enhancement will allow the disassembler 16856to obtain the BIOS DSDT from the registry under Windows. 16857 16858Fixed a problem with the VendorShort and VendorLong resource 16859descriptors where an invalid AML sequence was created. 16860 16861Implemented a fix for BufferData term in the ASL parser. It was 16862inadvertently defined twice, allowing invalid syntax to pass and 16863causing reduction conflicts. 16864 16865Fixed a problem where the Ones opcode could get converted to a 16866value of zero if "Ones" was used where a byte, word or dword value 16867was expected. The 64-bit value is now truncated to the correct 16868size with the correct value. 16869 16870 16871 16872---------------------------------------- 1687302 July 2002. Summary of changes for this release. 16874 16875 168761) ACPI CA Core Subsystem Version 20020702: 16877 16878The Table Manager code has been restructured to add several new 16879features. Tables that are not required by the core subsystem 16880(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 16881validated in any way and are returned from AcpiGetFirmwareTable if 16882requested. The AcpiOsTableOverride interface is now called for 16883each table that is loaded by the subsystem in order to allow the 16884host to override any table it chooses. Previously, only the DSDT 16885could be overridden. Added one new files, tbrsdt.c and 16886tbgetall.c. 16887 16888Fixed a problem with the conversion of internal package objects to 16889external objects (when a package is returned from a control 16890method.) The return buffer length was set to zero instead of the 16891proper length of the package object. 16892 16893Fixed a reported problem with the use of the RefOf and DeRefOf 16894operators when passing reference arguments to control methods. A 16895new type of Reference object is used internally for references 16896produced by the RefOf operator. 16897 16898Added additional error messages in the Resource Manager to explain 16899AE_BAD_DATA errors when they occur during resource parsing. 16900 16901Split the AcpiEnableSubsystem into two primitives to enable a 16902finer granularity initialization sequence. These two calls should 16903be called in this order: AcpiEnableSubsystem (flags), 16904AcpiInitializeObjects (flags). The flags parameter remains the 16905same. 16906 16907 169082) Linux 16909 16910Updated the ACPI utilities module to understand the new style of 16911fully resolved package objects that are now returned from the core 16912subsystem. This eliminates errors of the form: 16913 16914 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 16915 acpi_utils-0430 [145] acpi_evaluate_reference: 16916 Invalid element in package (not a device reference) 16917 16918The method evaluation utility uses the new buffer allocation 16919scheme instead of calling AcpiEvaluate Object twice. 16920 16921Added support for ECDT. This allows the use of the Embedded 16922 16923Controller before the namespace has been fully initialized, which 16924is necessary for ACPI 2.0 support, and for some laptops to 16925initialize properly. (Laptops using ECDT are still rare, so only 16926limited testing was performed of the added functionality.) 16927 16928Fixed memory leaks in the EC driver. 16929 16930Eliminated a brittle code structure in acpi_bus_init(). 16931 16932Eliminated the acpi_evaluate() helper function in utils.c. It is 16933no longer needed since acpi_evaluate_object can optionally 16934allocate memory for the return object. 16935 16936Implemented fix for keyboard hang when getting battery readings on 16937some systems (Stephen White) 16938 16939PCI IRQ routing update (Dominik Brodowski) 16940 16941Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 16942support 16943 16944---------------------------------------- 1694511 June 2002. Summary of changes for this release. 16946 16947 169481) ACPI CA Core Subsystem Version 20020611: 16949 16950Fixed a reported problem where constants such as Zero and One 16951appearing within _PRT packages were not handled correctly within 16952the resource manager code. Originally reported against the ASL 16953compiler because the code generator now optimizes integers to 16954their minimal AML representation (i.e. AML constants if possible.) 16955The _PRT code now handles all AML constant opcodes correctly 16956(Zero, One, Ones, Revision). 16957 16958Fixed a problem with the Concatenate operator in the AML 16959interpreter where a buffer result object was incorrectly marked as 16960not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 16961 16962All package sub-objects are now fully resolved before they are 16963returned from the external ACPI interfaces. This means that name 16964strings are resolved to object handles, and constant operators 16965(Zero, One, Ones, Revision) are resolved to Integers. 16966 16967Implemented immediate resolution of the AML Constant opcodes 16968(Zero, One, Ones, Revision) to Integer objects upon detection 16969within the AML stream. This has simplified and reduced the 16970generated code size of the subsystem by eliminating about 10 16971switch statements for these constants (which previously were 16972contained in Reference objects.) The complicating issues are that 16973the Zero opcode is used as a "placeholder" for unspecified 16974optional target operands and stores to constants are defined to be 16975no-ops. 16976 16977Code and Data Size: Current core subsystem library sizes are shown 16978below. These are the code and data sizes for the acpica.lib 16979produced by the Microsoft Visual C++ 6.0 compiler, and these 16980values do not include any ACPI driver or OSPM code. The debug 16981version of the code includes the debug output trace mechanism and 16982has a larger code and data size. Note that these values will vary 16983depending on the efficiency of the compiler and the compiler 16984options used during generation. 16985 16986 Previous Release 16987 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 16988 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 16989 Current Release: 16990 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 16991 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 16992 16993 169942) Linux 16995 16996 16997Added preliminary support for obtaining _TRA data for PCI root 16998bridges (Bjorn Helgaas). 16999 17000 170013) iASL Compiler Version X2046: 17002 17003Fixed a problem where the "_DDN" reserved name was defined to be a 17004control method with one argument. There are no arguments, and 17005_DDN does not have to be a control method. 17006 17007Fixed a problem with the Linux version of the compiler where the 17008source lines printed with error messages were the wrong lines. 17009This turned out to be the "LF versus CR/LF" difference between 17010Windows and Unix. This appears to be the longstanding issue 17011concerning listing output and error messages. 17012 17013Fixed a problem with the Linux version of compiler where opcode 17014names within error messages were wrong. This was caused by a 17015slight difference in the output of the Flex tool on Linux versus 17016Windows. 17017 17018Fixed a problem with the Linux compiler where the hex output files 17019contained some garbage data caused by an internal buffer overrun. 17020 17021 17022---------------------------------------- 1702317 May 2002. Summary of changes for this release. 17024 17025 170261) ACPI CA Core Subsystem Version 20020517: 17027 17028Implemented a workaround to an BIOS bug discovered on the HP 17029OmniBook where the FADT revision number and the table size are 17030inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 17031behavior is to fallback to using only the ACPI 1.0 fields of the 17032FADT if the table is too small to be a ACPI 2.0 table as claimed 17033by the revision number. Although this is a BIOS bug, this is a 17034case where the workaround is simple enough and with no side 17035effects, so it seemed prudent to add it. A warning message is 17036issued, however. 17037 17038Implemented minimum size checks for the fixed-length ACPI tables - 17039- the FADT and FACS, as well as consistency checks between the 17040revision number and the table size. 17041 17042Fixed a reported problem in the table override support where the 17043new table pointer was incorrectly treated as a physical address 17044instead of a logical address. 17045 17046Eliminated the use of the AE_AML_ERROR exception and replaced it 17047with more descriptive codes. 17048 17049Fixed a problem where an exception would occur if an ASL Field was 17050defined with no named Field Units underneath it (used by some 17051index fields). 17052 17053Code and Data Size: Current core subsystem library sizes are shown 17054below. These are the code and data sizes for the acpica.lib 17055produced by the Microsoft Visual C++ 6.0 compiler, and these 17056values do not include any ACPI driver or OSPM code. The debug 17057version of the code includes the debug output trace mechanism and 17058has a larger code and data size. Note that these values will vary 17059depending on the efficiency of the compiler and the compiler 17060options used during generation. 17061 17062 Previous Release 17063 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 17064 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 17065 Current Release: 17066 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 17067 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 17068 17069 17070 170712) Linux 17072 17073Much work done on ACPI init (MADT and PCI IRQ routing support). 17074(Paul D. and Dominik Brodowski) 17075 17076Fix PCI IRQ-related panic on boot (Sam Revitch) 17077 17078Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 17079 17080Fix "MHz" typo (Dominik Brodowski) 17081 17082Fix RTC year 2000 issue (Dominik Brodowski) 17083 17084Preclude multiple button proc entries (Eric Brunet) 17085 17086Moved arch-specific code out of include/platform/aclinux.h 17087 170883) iASL Compiler Version X2044: 17089 17090Implemented error checking for the string used in the EISAID macro 17091(Usually used in the definition of the _HID object.) The code now 17092strictly enforces the PnP format - exactly 7 characters, 3 17093uppercase letters and 4 hex digits. 17094 17095If a raw string is used in the definition of the _HID object 17096(instead of the EISAID macro), the string must contain all 17097alphanumeric characters (e.g., "*PNP0011" is not allowed because 17098of the asterisk.) 17099 17100Implemented checking for invalid use of ACPI reserved names for 17101most of the name creation operators (Name, Device, Event, Mutex, 17102OperationRegion, PowerResource, Processor, and ThermalZone.) 17103Previously, this check was only performed for control methods. 17104 17105Implemented an additional check on the Name operator to emit an 17106error if a reserved name that must be implemented in ASL as a 17107control method is used. We know that a reserved name must be a 17108method if it is defined with input arguments. 17109 17110The warning emitted when a namespace object reference is not found 17111during the cross reference phase has been changed into an error. 17112The "External" directive should be used for names defined in other 17113modules. 17114 17115 171164) Tools and Utilities 17117 17118The 16-bit tools (adump16 and aexec16) have been regenerated and 17119tested. 17120 17121Fixed a problem with the output of both acpidump and adump16 where 17122the indentation of closing parentheses and brackets was not 17123 17124aligned properly with the parent block. 17125 17126 17127---------------------------------------- 1712803 May 2002. Summary of changes for this release. 17129 17130 171311) ACPI CA Core Subsystem Version 20020503: 17132 17133Added support a new OSL interface that allows the host operating 17134 17135system software to override the DSDT found in the firmware - 17136AcpiOsTableOverride. With this interface, the OSL can examine the 17137version of the firmware DSDT and replace it with a different one 17138if desired. 17139 17140Added new external interfaces for accessing ACPI registers from 17141device drivers and other system software - AcpiGetRegister and 17142AcpiSetRegister. This was simply an externalization of the 17143existing AcpiHwBitRegister interfaces. 17144 17145Fixed a regression introduced in the previous build where the 17146ASL/AML CreateField operator always returned an error, 17147"destination must be a NS Node". 17148 17149Extended the maximum time (before failure) to successfully enable 17150ACPI mode to 3 seconds. 17151 17152Code and Data Size: Current core subsystem library sizes are shown 17153below. These are the code and data sizes for the acpica.lib 17154produced by the Microsoft Visual C++ 6.0 compiler, and these 17155values do not include any ACPI driver or OSPM code. The debug 17156version of the code includes the debug output trace mechanism and 17157has a larger code and data size. Note that these values will vary 17158depending on the efficiency of the compiler and the compiler 17159options used during generation. 17160 17161 Previous Release 17162 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 17163 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 17164 Current Release: 17165 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 17166 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 17167 17168 171692) Linux 17170 17171Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 17172free. While 3 out of 4 of our in-house systems work fine, the last 17173one still hangs when testing the LAPIC timer. 17174 17175Renamed many files in 2.5 kernel release to omit "acpi_" from the 17176name. 17177 17178Added warning on boot for Presario 711FR. 17179 17180Sleep improvements (Pavel Machek) 17181 17182ACPI can now be built without CONFIG_PCI enabled. 17183 17184IA64: Fixed memory map functions (JI Lee) 17185 17186 171873) iASL Compiler Version X2043: 17188 17189Added support to allow the compiler to be integrated into the MS 17190VC++ development environment for one-button compilation of single 17191files or entire projects -- with error-to-source-line mapping. 17192 17193Implemented support for compile-time constant folding for the 17194Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 17195specification. This allows the ASL writer to use expressions 17196instead of Integer/Buffer/String constants in terms that must 17197evaluate to constants at compile time and will also simplify the 17198emitted AML in any such sub-expressions that can be folded 17199(evaluated at compile-time.) This increases the size of the 17200compiler significantly because a portion of the ACPI CA AML 17201interpreter is included within the compiler in order to pre- 17202evaluate constant expressions. 17203 17204 17205Fixed a problem with the "Unicode" ASL macro that caused the 17206compiler to fault. (This macro is used in conjunction with the 17207_STR reserved name.) 17208 17209Implemented an AML opcode optimization to use the Zero, One, and 17210Ones opcodes where possible to further reduce the size of integer 17211constants and thus reduce the overall size of the generated AML 17212code. 17213 17214Implemented error checking for new reserved terms for ACPI version 172152.0A. 17216 17217Implemented the -qr option to display the current list of ACPI 17218reserved names known to the compiler. 17219 17220Implemented the -qc option to display the current list of ASL 17221operators that are allowed within constant expressions and can 17222therefore be folded at compile time if the operands are constants. 17223 17224 172254) Documentation 17226 17227Updated the Programmer's Reference for new interfaces, data types, 17228and memory allocation model options. 17229 17230Updated the iASL Compiler User Reference to apply new format and 17231add information about new features and options. 17232 17233---------------------------------------- 1723419 April 2002. Summary of changes for this release. 17235 172361) ACPI CA Core Subsystem Version 20020419: 17237 17238The source code base for the Core Subsystem has been completely 17239cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 17240versions. The Lint option files used are included in the 17241/acpi/generate/lint directory. 17242 17243Implemented enhanced status/error checking across the entire 17244Hardware manager subsystem. Any hardware errors (reported from 17245the OSL) are now bubbled up and will abort a running control 17246method. 17247 17248 17249Fixed a problem where the per-ACPI-table integer width (32 or 64) 17250was stored only with control method nodes, causing a fault when 17251non-control method code was executed during table loading. The 17252solution implemented uses a global variable to indicate table 17253width across the entire ACPI subsystem. Therefore, ACPI CA does 17254not support mixed integer widths across different ACPI tables 17255(DSDT, SSDT). 17256 17257Fixed a problem where NULL extended fields (X fields) in an ACPI 172582.0 ACPI FADT caused the table load to fail. Although the 17259existing ACPI specification is a bit fuzzy on this topic, the new 17260behavior is to fall back on a ACPI 1.0 field if the corresponding 17261ACPI 2.0 X field is zero (even though the table revision indicates 17262a full ACPI 2.0 table.) The ACPI specification will be updated to 17263clarify this issue. 17264 17265Fixed a problem with the SystemMemory operation region handler 17266where memory was always accessed byte-wise even if the AML- 17267specified access width was larger than a byte. This caused 17268problems on systems with memory-mapped I/O. Memory is now 17269accessed with the width specified. On systems that do not support 17270non-aligned transfers, a check is made to guarantee proper address 17271alignment before proceeding in order to avoid an AML-caused 17272alignment fault within the kernel. 17273 17274 17275Fixed a problem with the ExtendedIrq resource where only one byte 17276of the 4-byte Irq field was extracted. 17277 17278Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 17279function was out of date and required a rewrite. 17280 17281Code and Data Size: Current core subsystem library sizes are shown 17282below. These are the code and data sizes for the acpica.lib 17283produced by the Microsoft Visual C++ 6.0 compiler, and these 17284values do not include any ACPI driver or OSPM code. The debug 17285version of the code includes the debug output trace mechanism and 17286has a larger code and data size. Note that these values will vary 17287depending on the efficiency of the compiler and the compiler 17288options used during generation. 17289 17290 Previous Release 17291 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 17292 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 17293 Current Release: 17294 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 17295 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 17296 17297 172982) Linux 17299 17300PCI IRQ routing fixes (Dominik Brodowski) 17301 17302 173033) iASL Compiler Version X2042: 17304 17305Implemented an additional compile-time error check for a field 17306unit whose size + minimum access width would cause a run-time 17307access beyond the end-of-region. Previously, only the field size 17308itself was checked. 17309 17310The Core subsystem and iASL compiler now share a common parse 17311object in preparation for compile-time evaluation of the type 173123/4/5 ASL operators. 17313 17314 17315---------------------------------------- 17316Summary of changes for this release: 03_29_02 17317 173181) ACPI CA Core Subsystem Version 20020329: 17319 17320Implemented support for late evaluation of TermArg operands to 17321Buffer and Package objects. This allows complex expressions to be 17322used in the declarations of these object types. 17323 17324Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 173251.0, if the field was larger than 32 bits, it was returned as a 17326buffer - otherwise it was returned as an integer. In ACPI 2.0, 17327the field is returned as a buffer only if the field is larger than 1732864 bits. The TableRevision is now considered when making this 17329conversion to avoid incompatibility with existing ASL code. 17330 17331Implemented logical addressing for AcpiOsGetRootPointer. This 17332allows an RSDP with either a logical or physical address. With 17333this support, the host OS can now override all ACPI tables with 17334one logical RSDP. Includes implementation of "typed" pointer 17335support to allow a common data type for both physical and logical 17336pointers internally. This required a change to the 17337AcpiOsGetRootPointer interface. 17338 17339Implemented the use of ACPI 2.0 Generic Address Structures for all 17340GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 17341mapped I/O for these ACPI features. 17342 17343Initialization now ignores not only non-required tables (All 17344tables other than the FADT, FACS, DSDT, and SSDTs), but also does 17345not validate the table headers of unrecognized tables. 17346 17347Fixed a problem where a notify handler could only be 17348installed/removed on an object of type Device. All "notify" 17349 17350objects are now supported -- Devices, Processor, Power, and 17351Thermal. 17352 17353Removed most verbosity from the ACPI_DB_INFO debug level. Only 17354critical information is returned when this debug level is enabled. 17355 17356Code and Data Size: Current core subsystem library sizes are shown 17357below. These are the code and data sizes for the acpica.lib 17358produced by the Microsoft Visual C++ 6.0 compiler, and these 17359values do not include any ACPI driver or OSPM code. The debug 17360version of the code includes the debug output trace mechanism and 17361has a larger code and data size. Note that these values will vary 17362depending on the efficiency of the compiler and the compiler 17363options used during generation. 17364 17365 Previous Release 17366 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 17367 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 17368 Current Release: 17369 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 17370 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 17371 17372 173732) Linux: 17374 17375The processor driver (acpi_processor.c) now fully supports ACPI 173762.0-based processor performance control (e.g. Intel(R) 17377SpeedStep(TM) technology) Note that older laptops that only have 17378the Intel "applet" interface are not supported through this. The 17379'limit' and 'performance' interface (/proc) are fully functional. 17380[Note that basic policy for controlling performance state 17381transitions will be included in the next version of ospmd.] The 17382idle handler was modified to more aggressively use C2, and PIIX4 17383errata handling underwent a complete overhaul (big thanks to 17384Dominik Brodowski). 17385 17386Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 17387based devices in the ACPI namespace are now dynamically bound 17388(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 17389This allows, among other things, ACPI to resolve bus numbers for 17390subordinate PCI bridges. 17391 17392Enhanced PCI IRQ routing to get the proper bus number for _PRT 17393entries defined underneath PCI bridges. 17394 17395Added IBM 600E to bad bios list due to invalid _ADR value for 17396PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 17397 17398In the process of adding full MADT support (e.g. IOAPIC) for IA32 17399(acpi.c, mpparse.c) -- stay tuned. 17400 17401Added back visual differentiation between fixed-feature and 17402control-method buttons in dmesg. Buttons are also subtyped (e.g. 17403button/power/PWRF) to simplify button identification. 17404 17405We no longer use -Wno-unused when compiling debug. Please ignore 17406any "_THIS_MODULE defined but not used" messages. 17407 17408Can now shut down the system using "magic sysrq" key. 17409 17410 174113) iASL Compiler version 2041: 17412 17413Fixed a problem where conversion errors for hex/octal/decimal 17414constants were not reported. 17415 17416Implemented a fix for the General Register template Address field. 17417This field was 8 bits when it should be 64. 17418 17419Fixed a problem where errors/warnings were no longer being emitted 17420within the listing output file. 17421 17422Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 17423exactly 4 characters, alphanumeric only. 17424 17425 17426 17427 17428---------------------------------------- 17429Summary of changes for this release: 03_08_02 17430 17431 174321) ACPI CA Core Subsystem Version 20020308: 17433 17434Fixed a problem with AML Fields where the use of the "AccessAny" 17435keyword could cause an interpreter error due to attempting to read 17436or write beyond the end of the parent Operation Region. 17437 17438Fixed a problem in the SystemMemory Operation Region handler where 17439an attempt was made to map memory beyond the end of the region. 17440This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 17441errors on some Linux systems. 17442 17443Fixed a problem where the interpreter/namespace "search to root" 17444algorithm was not functioning for some object types. Relaxed the 17445internal restriction on the search to allow upsearches for all 17446external object types as well as most internal types. 17447 17448 174492) Linux: 17450 17451We now use safe_halt() macro versus individual calls to sti | hlt. 17452 17453Writing to the processor limit interface should now work. "echo 1" 17454will increase the limit, 2 will decrease, and 0 will reset to the 17455 17456default. 17457 17458 174593) ASL compiler: 17460 17461Fixed segfault on Linux version. 17462 17463 17464---------------------------------------- 17465Summary of changes for this release: 02_25_02 17466 174671) ACPI CA Core Subsystem: 17468 17469 17470Fixed a problem where the GPE bit masks were not initialized 17471properly, causing erratic GPE behavior. 17472 17473Implemented limited support for multiple calling conventions. The 17474code can be generated with either the VPL (variable parameter 17475list, or "C") convention, or the FPL (fixed parameter list, or 17476"Pascal") convention. The core subsystem is about 3.4% smaller 17477when generated with FPL. 17478 17479 174802) Linux 17481 17482Re-add some /proc/acpi/event functionality that was lost during 17483the rewrite 17484 17485Resolved issue with /proc events for fixed-feature buttons showing 17486up as the system device. 17487 17488Fixed checks on C2/C3 latencies to be inclusive of maximum values. 17489 17490Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 17491 17492Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 17493 17494Fixed limit interface & usage to fix bugs with passive cooling 17495hysterisis. 17496 17497Restructured PRT support. 17498 17499 17500---------------------------------------- 17501Summary of changes for this label: 02_14_02 17502 17503 175041) ACPI CA Core Subsystem: 17505 17506Implemented support in AcpiLoadTable to allow loading of FACS and 17507FADT tables. 17508 17509Support for the now-obsolete interim 0.71 64-bit ACPI tables has 17510been removed. All 64-bit platforms should be migrated to the ACPI 175112.0 tables. The actbl71.h header has been removed from the source 17512tree. 17513 17514All C macros defined within the subsystem have been prefixed with 17515"ACPI_" to avoid collision with other system include files. 17516 17517Removed the return value for the two AcpiOsPrint interfaces, since 17518it is never used and causes lint warnings for ignoring the return 17519value. 17520 17521Added error checking to all internal mutex acquire and release 17522calls. Although a failure from one of these interfaces is 17523probably a fatal system error, these checks will cause the 17524immediate abort of the currently executing method or interface. 17525 17526Fixed a problem where the AcpiSetCurrentResources interface could 17527fault. This was a side effect of the deployment of the new memory 17528allocation model. 17529 17530Fixed a couple of problems with the Global Lock support introduced 17531in the last major build. The "common" (1.0/2.0) internal FACS was 17532being overwritten with the FACS signature and clobbering the 17533Global Lock pointer. Also, the actual firmware FACS was being 17534unmapped after construction of the "common" FACS, preventing 17535access to the actual Global Lock field within it. The "common" 17536internal FACS is no longer installed as an actual ACPI table; it 17537is used simply as a global. 17538 17539Code and Data Size: Current core subsystem library sizes are shown 17540below. These are the code and data sizes for the acpica.lib 17541produced by the Microsoft Visual C++ 6.0 compiler, and these 17542values do not include any ACPI driver or OSPM code. The debug 17543version of the code includes the debug output trace mechanism and 17544has a larger code and data size. Note that these values will vary 17545depending on the efficiency of the compiler and the compiler 17546options used during generation. 17547 17548 Previous Release (02_07_01) 17549 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 17550 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 17551 Current Release: 17552 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 17553 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 17554 17555 175562) Linux 17557 17558Updated Linux-specific code for core macro and OSL interface 17559changes described above. 17560 17561Improved /proc/acpi/event. It now can be opened only once and has 17562proper poll functionality. 17563 17564Fixed and restructured power management (acpi_bus). 17565 17566Only create /proc "view by type" when devices of that class exist. 17567 17568Fixed "charging/discharging" bug (and others) in acpi_battery. 17569 17570Improved thermal zone code. 17571 17572 175733) ASL Compiler, version X2039: 17574 17575 17576Implemented the new compiler restriction on ASL String hex/octal 17577escapes to non-null, ASCII values. An error results if an invalid 17578value is used. (This will require an ACPI 2.0 specification 17579change.) 17580 17581AML object labels that are output to the optional C and ASM source 17582are now prefixed with both the ACPI table signature and table ID 17583to help guarantee uniqueness within a large BIOS project. 17584 17585 17586---------------------------------------- 17587Summary of changes for this label: 02_01_02 17588 175891) ACPI CA Core Subsystem: 17590 17591ACPI 2.0 support is complete in the entire Core Subsystem and the 17592ASL compiler. All new ACPI 2.0 operators are implemented and all 17593other changes for ACPI 2.0 support are complete. With 17594simultaneous code and data optimizations throughout the subsystem, 17595ACPI 2.0 support has been implemented with almost no additional 17596cost in terms of code and data size. 17597 17598Implemented a new mechanism for allocation of return buffers. If 17599the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 17600be allocated on behalf of the caller. Consolidated all return 17601buffer validation and allocation to a common procedure. Return 17602buffers will be allocated via the primary OSL allocation interface 17603since it appears that a separate pool is not needed by most users. 17604If a separate pool is required for these buffers, the caller can 17605still use the original mechanism and pre-allocate the buffer(s). 17606 17607Implemented support for string operands within the DerefOf 17608operator. 17609 17610Restructured the Hardware and Event managers to be table driven, 17611simplifying the source code and reducing the amount of generated 17612code. 17613 17614Split the common read/write low-level ACPI register bitfield 17615procedure into a separate read and write, simplifying the code 17616considerably. 17617 17618Obsoleted the AcpiOsCallocate OSL interface. This interface was 17619used only a handful of times and didn't have enough critical mass 17620for a separate interface. Replaced with a common calloc procedure 17621in the core. 17622 17623Fixed a reported problem with the GPE number mapping mechanism 17624that allows GPE1 numbers to be non-contiguous with GPE0. 17625Reorganized the GPE information and shrunk a large array that was 17626originally large enough to hold info for all possible GPEs (256) 17627to simply large enough to hold all GPEs up to the largest GPE 17628number on the machine. 17629 17630Fixed a reported problem with resource structure alignment on 64- 17631bit platforms. 17632 17633Changed the AcpiEnableEvent and AcpiDisableEvent external 17634interfaces to not require any flags for the common case of 17635enabling/disabling a GPE. 17636 17637Implemented support to allow a "Notify" on a Processor object. 17638 17639Most TBDs in comments within the source code have been resolved 17640and eliminated. 17641 17642 17643Fixed a problem in the interpreter where a standalone parent 17644prefix (^) was not handled correctly in the interpreter and 17645debugger. 17646 17647Removed obsolete and unnecessary GPE save/restore code. 17648 17649Implemented Field support in the ASL Load operator. This allows a 17650table to be loaded from a named field, in addition to loading a 17651table directly from an Operation Region. 17652 17653Implemented timeout and handle support in the external Global Lock 17654interfaces. 17655 17656Fixed a problem in the AcpiDump utility where pathnames were no 17657longer being generated correctly during the dump of named objects. 17658 17659Modified the AML debugger to give a full display of if/while 17660predicates instead of just one AML opcode at a time. (The 17661predicate can have several nested ASL statements.) The old method 17662was confusing during single stepping. 17663 17664Code and Data Size: Current core subsystem library sizes are shown 17665below. These are the code and data sizes for the acpica.lib 17666produced by the Microsoft Visual C++ 6.0 compiler, and these 17667values do not include any ACPI driver or OSPM code. The debug 17668version of the code includes the debug output trace mechanism and 17669has a larger code and data size. Note that these values will vary 17670depending on the efficiency of the compiler and the compiler 17671options used during generation. 17672 17673 Previous Release (12_18_01) 17674 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 17675 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 17676 Current Release: 17677 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 17678 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 17679 176802) Linux 17681 17682 Implemented fix for PIIX reverse throttling errata (Processor 17683driver) 17684 17685Added new Limit interface (Processor and Thermal drivers) 17686 17687New thermal policy (Thermal driver) 17688 17689Many updates to /proc 17690 17691Battery "low" event support (Battery driver) 17692 17693Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 17694 17695IA32 - IA64 initialization unification, no longer experimental 17696 17697Menuconfig options redesigned 17698 176993) ASL Compiler, version X2037: 17700 17701Implemented several new output features to simplify integration of 17702AML code into firmware: 1) Output the AML in C source code with 17703labels for each named ASL object. The original ASL source code 17704is interleaved as C comments. 2) Output the AML in ASM source code 17705with labels and interleaved ASL source. 3) Output the AML in 17706raw hex table form, in either C or ASM. 17707 17708Implemented support for optional string parameters to the 17709LoadTable operator. 17710 17711Completed support for embedded escape sequences within string 17712literals. The compiler now supports all single character escapes 17713as well as the Octal and Hex escapes. Note: the insertion of a 17714null byte into a string literal (via the hex/octal escape) causes 17715the string to be immediately terminated. A warning is issued. 17716 17717Fixed a problem where incorrect AML was generated for the case 17718where an ASL namepath consists of a single parent prefix ( 17719 17720) with no trailing name segments. 17721 17722The compiler has been successfully generated with a 64-bit C 17723compiler. 17724 17725 17726 17727 17728---------------------------------------- 17729Summary of changes for this label: 12_18_01 17730 177311) Linux 17732 17733Enhanced blacklist with reason and severity fields. Any table's 17734signature may now be used to identify a blacklisted system. 17735 17736Call _PIC control method to inform the firmware which interrupt 17737model the OS is using. Turn on any disabled link devices. 17738 17739Cleaned up busmgr /proc error handling (Andreas Dilger) 17740 17741 2) ACPI CA Core Subsystem: 17742 17743Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 17744while loop) 17745 17746Completed implementation of the ACPI 2.0 "Continue", 17747"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 17748operators. All new ACPI 2.0 operators are now implemented in both 17749the ASL compiler and the AML interpreter. The only remaining ACPI 177502.0 task is support for the String data type in the DerefOf 17751operator. Fixed a problem with AcquireMutex where the status code 17752was lost if the caller had to actually wait for the mutex. 17753 17754Increased the maximum ASL Field size from 64K bits to 4G bits. 17755 17756Completed implementation of the external Global Lock interfaces -- 17757AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 17758Handler parameters were added. 17759 17760Completed another pass at removing warnings and issues when 17761compiling with 64-bit compilers. The code now compiles cleanly 17762with the Intel 64-bit C/C++ compiler. Most notably, the pointer 17763add and subtract (diff) macros have changed considerably. 17764 17765 17766Created and deployed a new ACPI_SIZE type that is 64-bits wide on 1776764-bit platforms, 32-bits on all others. This type is used 17768wherever memory allocation and/or the C sizeof() operator is used, 17769and affects the OSL memory allocation interfaces AcpiOsAllocate 17770and AcpiOsCallocate. 17771 17772Implemented sticky user breakpoints in the AML debugger. 17773 17774Code and Data Size: Current core subsystem library sizes are shown 17775below. These are the code and data sizes for the acpica.lib 17776produced by the Microsoft Visual C++ 6.0 compiler, and these 17777values do not include any ACPI driver or OSPM code. The debug 17778version of the code includes the debug output trace mechanism and 17779has a larger code and data size. Note that these values will vary 17780depending on the efficiency of the compiler and the compiler 17781options used during generation. 17782 17783 Previous Release (12_05_01) 17784 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 17785 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 17786 Current Release: 17787 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 17788 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 17789 17790 3) ASL Compiler, version X2034: 17791 17792Now checks for (and generates an error if detected) the use of a 17793Break or Continue statement without an enclosing While statement. 17794 17795 17796Successfully generated the compiler with the Intel 64-bit C 17797compiler. 17798 17799 ---------------------------------------- 17800Summary of changes for this label: 12_05_01 17801 17802 1) ACPI CA Core Subsystem: 17803 17804The ACPI 2.0 CopyObject operator is fully implemented. This 17805operator creates a new copy of an object (and is also used to 17806bypass the "implicit conversion" mechanism of the Store operator.) 17807 17808The ACPI 2.0 semantics for the SizeOf operator are fully 17809implemented. The change is that performing a SizeOf on a 17810reference object causes an automatic dereference of the object to 17811the actual value before the size is evaluated. This behavior was 17812undefined in ACPI 1.0. 17813 17814The ACPI 2.0 semantics for the Extended IRQ resource descriptor 17815have been implemented. The interrupt polarity and mode are now 17816independently set. 17817 17818Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 17819appearing in Package objects were not properly converted to 17820integers when the internal Package was converted to an external 17821object (via the AcpiEvaluateObject interface.) 17822 17823Fixed a problem with the namespace object deletion mechanism for 17824objects created by control methods. There were two parts to this 17825problem: 1) Objects created during the initialization phase method 17826parse were not being deleted, and 2) The object owner ID mechanism 17827to track objects was broken. 17828 17829Fixed a problem where the use of the ASL Scope operator within a 17830control method would result in an invalid opcode exception. 17831 17832Fixed a problem introduced in the previous label where the buffer 17833length required for the _PRT structure was not being returned 17834correctly. 17835 17836Code and Data Size: Current core subsystem library sizes are shown 17837below. These are the code and data sizes for the acpica.lib 17838produced by the Microsoft Visual C++ 6.0 compiler, and these 17839values do not include any ACPI driver or OSPM code. The debug 17840version of the code includes the debug output trace mechanism and 17841has a larger code and data size. Note that these values will vary 17842depending on the efficiency of the compiler and the compiler 17843options used during generation. 17844 17845 Previous Release (11_20_01) 17846 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 17847 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 17848 17849 Current Release: 17850 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 17851 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 17852 17853 2) Linux: 17854 17855Updated all files to apply cleanly against 2.4.16. 17856 17857Added basic PCI Interrupt Routing Table (PRT) support for IA32 17858(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 17859version supports both static and dynamic PRT entries, but dynamic 17860entries are treated as if they were static (not yet 17861reconfigurable). Architecture- specific code to use this data is 17862absent on IA32 but should be available shortly. 17863 17864Changed the initialization sequence to start the ACPI interpreter 17865(acpi_init) prior to initialization of the PCI driver (pci_init) 17866in init/main.c. This ordering is required to support PRT and 17867facilitate other (future) enhancement. A side effect is that the 17868ACPI bus driver and certain device drivers can no longer be loaded 17869as modules. 17870 17871Modified the 'make menuconfig' options to allow PCI Interrupt 17872Routing support to be included without the ACPI Bus and other 17873device drivers. 17874 17875 3) ASL Compiler, version X2033: 17876 17877Fixed some issues with the use of the new CopyObject and 17878DataTableRegion operators. Both are fully functional. 17879 17880 ---------------------------------------- 17881Summary of changes for this label: 11_20_01 17882 17883 20 November 2001. Summary of changes for this release. 17884 17885 1) ACPI CA Core Subsystem: 17886 17887Updated Index support to match ACPI 2.0 semantics. Storing a 17888Integer, String, or Buffer to an Index of a Buffer will store only 17889the least-significant byte of the source to the Indexed buffer 17890byte. Multiple writes are not performed. 17891 17892Fixed a problem where the access type used in an AccessAs ASL 17893operator was not recorded correctly into the field object. 17894 17895Fixed a problem where ASL Event objects were created in a 17896signalled state. Events are now created in an unsignalled state. 17897 17898The internal object cache is now purged after table loading and 17899initialization to reduce the use of dynamic kernel memory -- on 17900the assumption that object use is greatest during the parse phase 17901of the entire table (versus the run-time use of individual control 17902methods.) 17903 17904ACPI 2.0 variable-length packages are now fully operational. 17905 17906Code and Data Size: Code and Data optimizations have permitted new 17907feature development with an actual reduction in the library size. 17908Current core subsystem library sizes are shown below. These are 17909the code and data sizes for the acpica.lib produced by the 17910Microsoft Visual C++ 6.0 compiler, and these values do not include 17911any ACPI driver or OSPM code. The debug version of the code 17912includes the debug output trace mechanism and has a larger code 17913and data size. Note that these values will vary depending on the 17914efficiency of the compiler and the compiler options used during 17915generation. 17916 17917 Previous Release (11_09_01): 17918 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 17919 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 17920 17921 Current Release: 17922 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 17923 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 17924 17925 2) Linux: 17926 17927Enhanced the ACPI boot-time initialization code to allow the use 17928of Local APIC tables for processor enumeration on IA-32, and to 17929pave the way for a fully MPS-free boot (on SMP systems) in the 17930near future. This functionality replaces 17931arch/i386/kernel/acpitables.c, which was introduced in an earlier 179322.4.15-preX release. To enable this feature you must add 17933"acpi_boot=on" to the kernel command line -- see the help entry 17934for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 17935the works... 17936 17937Restructured the configuration options to allow boot-time table 17938parsing support without inclusion of the ACPI Interpreter (and 17939other) code. 17940 17941NOTE: This release does not include fixes for the reported events, 17942power-down, and thermal passive cooling issues (coming soon). 17943 17944 3) ASL Compiler: 17945 17946Added additional typechecking for Fields within restricted access 17947Operation Regions. All fields within EC and CMOS regions must be 17948declared with ByteAcc. All fields within SMBus regions must be 17949declared with the BufferAcc access type. 17950 17951Fixed a problem where the listing file output of control methods 17952no longer interleaved the actual AML code with the ASL source 17953code. 17954 17955 17956 17957 17958---------------------------------------- 17959Summary of changes for this label: 11_09_01 17960 179611) ACPI CA Core Subsystem: 17962 17963Implemented ACPI 2.0-defined support for writes to fields with a 17964Buffer, String, or Integer source operand that is smaller than the 17965target field. In these cases, the source operand is zero-extended 17966to fill the target field. 17967 17968Fixed a problem where a Field starting bit offset (within the 17969parent operation region) was calculated incorrectly if the 17970 17971alignment of the field differed from the access width. This 17972affected CreateWordField, CreateDwordField, CreateQwordField, and 17973possibly other fields that use the "AccessAny" keyword. 17974 17975Fixed a problem introduced in the 11_02_01 release where indirect 17976stores through method arguments did not operate correctly. 17977 179782) Linux: 17979 17980Implemented boot-time ACPI table parsing support 17981(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 17982facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 17983legacy BIOS interfaces (e.g. MPS) for the configuration of system 17984processors, memory, and interrupts during setup_arch(). Note that 17985this patch does not include the required architecture-specific 17986changes required to apply this information -- subsequent patches 17987will be posted for both IA32 and IA64 to achieve this. 17988 17989Added low-level sleep support for IA32 platforms, courtesy of Pat 17990Mochel. This allows IA32 systems to transition to/from various 17991sleeping states (e.g. S1, S3), although the lack of a centralized 17992driver model and power-manageable drivers will prevent its 17993(successful) use on most systems. 17994 17995Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 17996submenu, unified IA32 and IA64 options, added new "Boot using ACPI 17997tables" option, etc. 17998 17999Increased the default timeout for the EC driver from 1ms to 10ms 18000(1000 cycles of 10us) to try to address AE_TIME errors during EC 18001transactions. 18002 18003 ---------------------------------------- 18004Summary of changes for this label: 11_02_01 18005 180061) ACPI CA Core Subsystem: 18007 18008ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 18009(QWordAcc keyword). All ACPI 2.0 64-bit support is now 18010implemented. 18011 18012OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 18013changes to support ACPI 2.0 Qword field access. Read/Write 18014PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 18015accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 18016the value parameter for the address space handler interface is now 18017an ACPI_INTEGER. OSL implementations of these interfaces must now 18018handle the case where the Width parameter is 64. 18019 18020Index Fields: Fixed a problem where unaligned bit assembly and 18021disassembly for IndexFields was not supported correctly. 18022 18023Index and Bank Fields: Nested Index and Bank Fields are now 18024supported. During field access, a check is performed to ensure 18025that the value written to an Index or Bank register is not out of 18026the range of the register. The Index (or Bank) register is 18027written before each access to the field data. Future support will 18028include allowing individual IndexFields to be wider than the 18029DataRegister width. 18030 18031Fields: Fixed a problem where the AML interpreter was incorrectly 18032attempting to write beyond the end of a Field/OpRegion. This was 18033a boundary case that occurred when a DWORD field was written to a 18034BYTE access OpRegion, forcing multiple writes and causing the 18035interpreter to write one datum too many. 18036 18037Fields: Fixed a problem with Field/OpRegion access where the 18038starting bit address of a field was incorrectly calculated if the 18039current access type was wider than a byte (WordAcc, DwordAcc, or 18040QwordAcc). 18041 18042Fields: Fixed a problem where forward references to individual 18043FieldUnits (individual Field names within a Field definition) were 18044not resolved during the AML table load. 18045 18046Fields: Fixed a problem where forward references from a Field 18047definition to the parent Operation Region definition were not 18048resolved during the AML table load. 18049 18050Fields: Duplicate FieldUnit names within a scope are now detected 18051during AML table load. 18052 18053Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 18054returned an incorrect name for the root node. 18055 18056Code and Data Size: Code and Data optimizations have permitted new 18057feature development with an actual reduction in the library size. 18058Current core subsystem library sizes are shown below. These are 18059the code and data sizes for the acpica.lib produced by the 18060Microsoft Visual C++ 6.0 compiler, and these values do not include 18061any ACPI driver or OSPM code. The debug version of the code 18062includes the debug output trace mechanism and has a larger code 18063and data size. Note that these values will vary depending on the 18064efficiency of the compiler and the compiler options used during 18065generation. 18066 18067 Previous Release (10_18_01): 18068 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 18069 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 18070 18071 Current Release: 18072 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 18073 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 18074 18075 2) Linux: 18076 18077Improved /proc processor output (Pavel Machek) Re-added 18078MODULE_LICENSE("GPL") to all modules. 18079 18080 3) ASL Compiler version X2030: 18081 18082Duplicate FieldUnit names within a scope are now detected and 18083flagged as errors. 18084 18085 4) Documentation: 18086 18087Programmer Reference updated to reflect OSL and address space 18088handler interface changes described above. 18089 18090---------------------------------------- 18091Summary of changes for this label: 10_18_01 18092 18093ACPI CA Core Subsystem: 18094 18095Fixed a problem with the internal object reference count mechanism 18096that occasionally caused premature object deletion. This resolves 18097all of the outstanding problem reports where an object is deleted 18098in the middle of an interpreter evaluation. Although this problem 18099only showed up in rather obscure cases, the solution to the 18100problem involved an adjustment of all reference counts involving 18101objects attached to namespace nodes. 18102 18103Fixed a problem with Field support in the interpreter where 18104writing to an aligned field whose length is an exact multiple (2 18105or greater) of the field access granularity would cause an attempt 18106to write beyond the end of the field. 18107 18108The top level AML opcode execution functions within the 18109interpreter have been renamed with a more meaningful and 18110consistent naming convention. The modules exmonad.c and 18111exdyadic.c were eliminated. New modules are exoparg1.c, 18112exoparg2.c, exoparg3.c, and exoparg6.c. 18113 18114Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 18115 18116Fixed a problem where the AML debugger was causing some internal 18117objects to not be deleted during subsystem termination. 18118 18119Fixed a problem with the external AcpiEvaluateObject interface 18120where the subsystem would fault if the named object to be 18121evaluated referred to a constant such as Zero, Ones, etc. 18122 18123Fixed a problem with IndexFields and BankFields where the 18124subsystem would fault if the index, data, or bank registers were 18125not defined in the same scope as the field itself. 18126 18127Added printf format string checking for compilers that support 18128this feature. Corrected more than 50 instances of issues with 18129format specifiers within invocations of ACPI_DEBUG_PRINT 18130throughout the core subsystem code. 18131 18132The ASL "Revision" operator now returns the ACPI support level 18133implemented in the core - the value "2" since the ACPI 2.0 support 18134is more than 50% implemented. 18135 18136Enhanced the output of the AML debugger "dump namespace" command 18137to output in a more human-readable form. 18138 18139Current core subsystem library code sizes are shown below. These 18140 18141are the code and data sizes for the acpica.lib produced by the 18142Microsoft Visual C++ 6.0 compiler, and these values do not include 18143any ACPI driver or OSPM code. The debug version of the code 18144includes the full debug trace mechanism -- leading to a much 18145 18146larger code and data size. Note that these values will vary 18147depending on the efficiency of the compiler and the compiler 18148options used during generation. 18149 18150 Previous Label (09_20_01): 18151 Non-Debug Version: 65K Code, 5K Data, 70K Total 18152 Debug Version: 138K Code, 58K Data, 196K Total 18153 18154 This Label: 18155 18156 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 18157 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 18158 18159Linux: 18160 18161Implemented a "Bad BIOS Blacklist" to track machines that have 18162known ASL/AML problems. 18163 18164Enhanced the /proc interface for the thermal zone driver and added 18165support for _HOT (the critical suspend trip point). The 'info' 18166file now includes threshold/policy information, and allows setting 18167of _SCP (cooling preference) and _TZP (polling frequency) values 18168to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 18169frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 18170preference to the passive/quiet mode (if supported by the ASL). 18171 18172Implemented a workaround for a gcc bug that resuted in an OOPs 18173when loading the control method battery driver. 18174 18175 ---------------------------------------- 18176Summary of changes for this label: 09_20_01 18177 18178 ACPI CA Core Subsystem: 18179 18180The AcpiEnableEvent and AcpiDisableEvent interfaces have been 18181modified to allow individual GPE levels to be flagged as wake- 18182enabled (i.e., these GPEs are to remain enabled when the platform 18183sleeps.) 18184 18185The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 18186support wake-enabled GPEs. This means that upon entering the 18187sleep state, all GPEs that are not wake-enabled are disabled. 18188When leaving the sleep state, these GPEs are re-enabled. 18189 18190A local double-precision divide/modulo module has been added to 18191enhance portability to OS kernels where a 64-bit math library is 18192not available. The new module is "utmath.c". 18193 18194Several optimizations have been made to reduce the use of CPU 18195stack. Originally over 2K, the maximum stack usage is now below 181962K at 1860 bytes (1.82k) 18197 18198Fixed a problem with the AcpiGetFirmwareTable interface where the 18199root table pointer was not mapped into a logical address properly. 18200 18201Fixed a problem where a NULL pointer was being dereferenced in the 18202interpreter code for the ASL Notify operator. 18203 18204Fixed a problem where the use of the ASL Revision operator 18205returned an error. This operator now returns the current version 18206of the ACPI CA core subsystem. 18207 18208Fixed a problem where objects passed as control method parameters 18209to AcpiEvaluateObject were always deleted at method termination. 18210However, these objects may end up being stored into the namespace 18211by the called method. The object reference count mechanism was 18212applied to these objects instead of a force delete. 18213 18214Fixed a problem where static strings or buffers (contained in the 18215AML code) that are declared as package elements within the ASL 18216code could cause a fault because the interpreter would attempt to 18217delete them. These objects are now marked with the "static 18218object" flag to prevent any attempt to delete them. 18219 18220Implemented an interpreter optimization to use operands directly 18221from the state object instead of extracting the operands to local 18222variables. This reduces stack use and code size, and improves 18223performance. 18224 18225The module exxface.c was eliminated as it was an unnecessary extra 18226layer of code. 18227 18228Current core subsystem library code sizes are shown below. These 18229are the code and data sizes for the acpica.lib produced by the 18230Microsoft Visual C++ 6.0 compiler, and these values do not include 18231any ACPI driver or OSPM code. The debug version of the code 18232includes the full debug trace mechanism -- leading to a much 18233larger code and data size. Note that these values will vary 18234depending on the efficiency of the compiler and the compiler 18235options used during generation. 18236 18237 Non-Debug Version: 65K Code, 5K Data, 70K Total 18238(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 18239Total (Previously 195K) 18240 18241Linux: 18242 18243Support for ACPI 2.0 64-bit integers has been added. All ACPI 18244Integer objects are now 64 bits wide 18245 18246All Acpi data types and structures are now in lower case. Only 18247Acpi macros are upper case for differentiation. 18248 18249 Documentation: 18250 18251Changes to the external interfaces as described above. 18252 18253 ---------------------------------------- 18254Summary of changes for this label: 08_31_01 18255 18256 ACPI CA Core Subsystem: 18257 18258A bug with interpreter implementation of the ASL Divide operator 18259was found and fixed. The implicit function return value (not the 18260explicit store operands) was returning the remainder instead of 18261the quotient. This was a longstanding bug and it fixes several 18262known outstanding issues on various platforms. 18263 18264The ACPI_DEBUG_PRINT and function trace entry/exit macros have 18265been further optimized for size. There are 700 invocations of the 18266DEBUG_PRINT macro alone, so each optimization reduces the size of 18267the debug version of the subsystem significantly. 18268 18269A stack trace mechanism has been implemented. The maximum stack 18270usage is about 2K on 32-bit platforms. The debugger command "stat 18271stack" will display the current maximum stack usage. 18272 18273All public symbols and global variables within the subsystem are 18274now prefixed with the string "Acpi". This keeps all of the 18275symbols grouped together in a kernel map, and avoids conflicts 18276with other kernel subsystems. 18277 18278Most of the internal fixed lookup tables have been moved into the 18279code segment via the const operator. 18280 18281Several enhancements have been made to the interpreter to both 18282reduce the code size and improve performance. 18283 18284Current core subsystem library code sizes are shown below. These 18285are the code and data sizes for the acpica.lib produced by the 18286Microsoft Visual C++ 6.0 compiler, and these values do not include 18287any ACPI driver or OSPM code. The debug version of the code 18288includes the full debug trace mechanism which contains over 700 18289invocations of the DEBUG_PRINT macro, 500 function entry macro 18290invocations, and over 900 function exit macro invocations -- 18291leading to a much larger code and data size. Note that these 18292values will vary depending on the efficiency of the compiler and 18293the compiler options used during generation. 18294 18295 Non-Debug Version: 64K Code, 5K Data, 69K Total 18296Debug Version: 137K Code, 58K Data, 195K Total 18297 18298 Linux: 18299 18300Implemented wbinvd() macro, pending a kernel-wide definition. 18301 18302Fixed /proc/acpi/event to handle poll() and short reads. 18303 18304 ASL Compiler, version X2026: 18305 18306Fixed a problem introduced in the previous label where the AML 18307 18308code emitted for package objects produced packages with zero 18309length. 18310 18311 ---------------------------------------- 18312Summary of changes for this label: 08_16_01 18313 18314ACPI CA Core Subsystem: 18315 18316The following ACPI 2.0 ASL operators have been implemented in the 18317AML interpreter (These are already supported by the Intel ASL 18318compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 18319ToBuffer. Support for 64-bit AML constants is implemented in the 18320AML parser, debugger, and disassembler. 18321 18322The internal memory tracking mechanism (leak detection code) has 18323been upgraded to reduce the memory overhead (a separate tracking 18324block is no longer allocated for each memory allocation), and now 18325supports all of the internal object caches. 18326 18327The data structures and code for the internal object caches have 18328been coelesced and optimized so that there is a single cache and 18329memory list data structure and a single group of functions that 18330implement generic cache management. This has reduced the code 18331size in both the debug and release versions of the subsystem. 18332 18333The DEBUG_PRINT macro(s) have been optimized for size and replaced 18334by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 18335different, because it generates a single call to an internal 18336function. This results in a savings of about 90 bytes per 18337invocation, resulting in an overall code and data savings of about 1833816% in the debug version of the subsystem. 18339 18340 Linux: 18341 18342Fixed C3 disk corruption problems and re-enabled C3 on supporting 18343machines. 18344 18345Integrated low-level sleep code by Patrick Mochel. 18346 18347Further tweaked source code Linuxization. 18348 18349Other minor fixes. 18350 18351 ASL Compiler: 18352 18353Support for ACPI 2.0 variable length packages is fixed/completed. 18354 18355Fixed a problem where the optional length parameter for the ACPI 183562.0 ToString operator. 18357 18358Fixed multiple extraneous error messages when a syntax error is 18359detected within the declaration line of a control method. 18360 18361 ---------------------------------------- 18362Summary of changes for this label: 07_17_01 18363 18364ACPI CA Core Subsystem: 18365 18366Added a new interface named AcpiGetFirmwareTable to obtain any 18367ACPI table via the ACPI signature. The interface can be called at 18368any time during kernel initialization, even before the kernel 18369virtual memory manager is initialized and paging is enabled. This 18370allows kernel subsystems to obtain ACPI tables very early, even 18371before the ACPI CA subsystem is initialized. 18372 18373Fixed a problem where Fields defined with the AnyAcc attribute 18374could be resolved to the incorrect address under the following 18375conditions: 1) the field width is larger than 8 bits and 2) the 18376parent operation region is not defined on a DWORD boundary. 18377 18378Fixed a problem where the interpreter is not being locked during 18379namespace initialization (during execution of the _INI control 18380methods), causing an error when an attempt is made to release it 18381later. 18382 18383ACPI 2.0 support in the AML Interpreter has begun and will be 18384ongoing throughout the rest of this year. In this label, The Mod 18385operator is implemented. 18386 18387Added a new data type to contain full PCI addresses named 18388ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 18389and Function values. 18390 18391 Linux: 18392 18393Enhanced the Linux version of the source code to change most 18394capitalized ACPI type names to lowercase. For example, all 18395instances of ACPI_STATUS are changed to acpi_status. This will 18396result in a large diff, but the change is strictly cosmetic and 18397aligns the CA code closer to the Linux coding standard. 18398 18399OSL Interfaces: 18400 18401The interfaces to the PCI configuration space have been changed to 18402add the PCI Segment number and to split the single 32-bit combined 18403DeviceFunction field into two 16-bit fields. This was 18404accomplished by moving the four values that define an address in 18405PCI configuration space (segment, bus, device, and function) to 18406the new ACPI_PCI_ID structure. 18407 18408The changes to the PCI configuration space interfaces led to a 18409reexamination of the complete set of address space access 18410interfaces for PCI, I/O, and Memory. The previously existing 18 18411interfaces have proven difficult to maintain (any small change 18412must be propagated across at least 6 interfaces) and do not easily 18413allow for future expansion to 64 bits if necessary. Also, on some 18414systems, it would not be appropriate to demultiplex the access 18415width (8, 16, 32,or 64) before calling the OSL if the 18416corresponding native OS interfaces contain a similar access width 18417parameter. For these reasons, the 18 address space interfaces 18418have been replaced by these 6 new ones: 18419 18420AcpiOsReadPciConfiguration 18421AcpiOsWritePciConfiguration 18422AcpiOsReadMemory 18423AcpiOsWriteMemory 18424AcpiOsReadPort 18425AcpiOsWritePort 18426 18427Added a new interface named AcpiOsGetRootPointer to allow the OSL 18428to perform the platform and/or OS-specific actions necessary to 18429obtain the ACPI RSDP table pointer. On IA-32 platforms, this 18430interface will simply call down to the CA core to perform the low- 18431memory search for the table. On IA-64, the RSDP is obtained from 18432EFI. Migrating this interface to the OSL allows the CA core to 18433 18434remain OS and platform independent. 18435 18436Added a new interface named AcpiOsSignal to provide a generic 18437"function code and pointer" interface for various miscellaneous 18438signals and notifications that must be made to the host OS. The 18439first such signals are intended to support the ASL Fatal and 18440Breakpoint operators. In the latter case, the AcpiOsBreakpoint 18441interface has been obsoleted. 18442 18443The definition of the AcpiFormatException interface has been 18444changed to simplify its use. The caller no longer must supply a 18445buffer to the call; A pointer to a const string is now returned 18446directly. This allows the call to be easily used in printf 18447statements, etc. since the caller does not have to manage a local 18448buffer. 18449 18450 18451 ASL Compiler, Version X2025: 18452 18453The ACPI 2.0 Switch/Case/Default operators have been implemented 18454and are fully functional. They will work with all ACPI 1.0 18455interpreters, since the operators are simply translated to If/Else 18456pairs. 18457 18458The ACPI 2.0 ElseIf operator is implemented and will also work 18459with 1.0 interpreters, for the same reason. 18460 18461Implemented support for ACPI 2.0 variable-length packages. These 18462packages have a separate opcode, and their size is determined by 18463the interpreter at run-time. 18464 18465Documentation The ACPI CA Programmer Reference has been updated to 18466reflect the new interfaces and changes to existing interfaces. 18467 18468 ------------------------------------------ 18469Summary of changes for this label: 06_15_01 18470 18471 ACPI CA Core Subsystem: 18472 18473Fixed a problem where a DWORD-accessed field within a Buffer 18474object would get its byte address inadvertently rounded down to 18475the nearest DWORD. Buffers are always Byte-accessible. 18476 18477 ASL Compiler, version X2024: 18478 18479Fixed a problem where the Switch() operator would either fault or 18480hang the compiler. Note however, that the AML code for this ACPI 184812.0 operator is not yet implemented. 18482 18483Compiler uses the new AcpiOsGetTimer interface to obtain compile 18484timings. 18485 18486Implementation of the CreateField operator automatically converts 18487a reference to a named field within a resource descriptor from a 18488byte offset to a bit offset if required. 18489 18490Added some missing named fields from the resource descriptor 18491support. These are the names that are automatically created by the 18492compiler to reference fields within a descriptor. They are only 18493valid at compile time and are not passed through to the AML 18494interpreter. 18495 18496Resource descriptor named fields are now typed as Integers and 18497subject to compile-time typechecking when used in expressions. 18498 18499 ------------------------------------------ 18500Summary of changes for this label: 05_18_01 18501 18502 ACPI CA Core Subsystem: 18503 18504Fixed a couple of problems in the Field support code where bits 18505from adjacent fields could be returned along with the proper field 18506bits. Restructured the field support code to improve performance, 18507readability and maintainability. 18508 18509New DEBUG_PRINTP macro automatically inserts the procedure name 18510into the output, saving hundreds of copies of procedure name 18511strings within the source, shrinking the memory footprint of the 18512debug version of the core subsystem. 18513 18514 Source Code Structure: 18515 18516The source code directory tree was restructured to reflect the 18517current organization of the component architecture. Some files 18518and directories have been moved and/or renamed. 18519 18520 Linux: 18521 18522Fixed leaking kacpidpc processes. 18523 18524Fixed queueing event data even when /proc/acpi/event is not 18525opened. 18526 18527 ASL Compiler, version X2020: 18528 18529Memory allocation performance enhancement - over 24X compile time 18530improvement on large ASL files. Parse nodes and namestring 18531buffers are now allocated from a large internal compiler buffer. 18532 18533The temporary .SRC file is deleted unless the "-s" option is 18534specified 18535 18536The "-d" debug output option now sends all output to the .DBG file 18537instead of the console. 18538 18539"External" second parameter is now optional 18540 18541"ElseIf" syntax now properly allows the predicate 18542 18543Last operand to "Load" now recognized as a Target operand 18544 18545Debug object can now be used anywhere as a normal object. 18546 18547ResourceTemplate now returns an object of type BUFFER 18548 18549EISAID now returns an object of type INTEGER 18550 18551"Index" now works with a STRING operand 18552 18553"LoadTable" now accepts optional parameters 18554 18555"ToString" length parameter is now optional 18556 18557"Interrupt (ResourceType," parse error fixed. 18558 18559"Register" with a user-defined region space parse error fixed 18560 18561Escaped backslash at the end of a string ("\\") scan/parse error 18562fixed 18563 18564"Revision" is now an object of type INTEGER. 18565 18566 18567 18568------------------------------------------ 18569Summary of changes for this label: 05_02_01 18570 18571Linux: 18572 18573/proc/acpi/event now blocks properly. 18574 18575Removed /proc/sys/acpi. You can still dump your DSDT from 18576/proc/acpi/dsdt. 18577 18578 ACPI CA Core Subsystem: 18579 18580Fixed a problem introduced in the previous label where some of the 18581"small" resource descriptor types were not recognized. 18582 18583Improved error messages for the case where an ASL Field is outside 18584the range of the parent operation region. 18585 18586 ASL Compiler, version X2018: 18587 18588 18589Added error detection for ASL Fields that extend beyond the length 18590of the parent operation region (only if the length of the region 18591is known at compile time.) This includes fields that have a 18592minimum access width that is smaller than the parent region, and 18593individual field units that are partially or entirely beyond the 18594extent of the parent. 18595 18596 18597 18598------------------------------------------ 18599Summary of changes for this label: 04_27_01 18600 18601 ACPI CA Core Subsystem: 18602 18603Fixed a problem where the namespace mutex could be released at the 18604wrong time during execution of AcpiRemoveAddressSpaceHandler. 18605 18606Added optional thread ID output for debug traces, to simplify 18607debugging of multiple threads. Added context switch notification 18608when the debug code realizes that a different thread is now 18609executing ACPI code. 18610 18611Some additional external data types have been prefixed with the 18612string "ACPI_" for consistency. This may effect existing code. 18613The data types affected are the external callback typedefs - e.g., 18614 18615WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 18616 18617 Linux: 18618 18619Fixed an issue with the OSL semaphore implementation where a 18620thread was waking up with an error from receiving a SIGCHLD 18621signal. 18622 18623Linux version of ACPI CA now uses the system C library for string 18624manipulation routines instead of a local implementation. 18625 18626Cleaned up comments and removed TBDs. 18627 18628 ASL Compiler, version X2017: 18629 18630Enhanced error detection and reporting for all file I/O 18631operations. 18632 18633 Documentation: 18634 18635Programmer Reference updated to version 1.06. 18636 18637 18638 18639------------------------------------------ 18640Summary of changes for this label: 04_13_01 18641 18642 ACPI CA Core Subsystem: 18643 18644Restructured support for BufferFields and RegionFields. 18645BankFields support is now fully operational. All known 32-bit 18646limitations on field sizes have been removed. Both BufferFields 18647and (Operation) RegionFields are now supported by the same field 18648management code. 18649 18650Resource support now supports QWORD address and IO resources. The 1865116/32/64 bit address structures and the Extended IRQ structure 18652have been changed to properly handle Source Resource strings. 18653 18654A ThreadId of -1 is now used to indicate a "mutex not acquired" 18655condition internally and must never be returned by AcpiOsThreadId. 18656This reserved value was changed from 0 since Unix systems allow a 18657thread ID of 0. 18658 18659Linux: 18660 18661Driver code reorganized to enhance portability 18662 18663Added a kernel configuration option to control ACPI_DEBUG 18664 18665Fixed the EC driver to honor _GLK. 18666 18667ASL Compiler, version X2016: 18668 18669Fixed support for the "FixedHw" keyword. Previously, the FixedHw 18670address space was set to 0, not 0x7f as it should be. 18671 18672 ------------------------------------------ 18673Summary of changes for this label: 03_13_01 18674 18675 ACPI CA Core Subsystem: 18676 18677During ACPI initialization, the _SB_._INI method is now run if 18678present. 18679 18680Notify handler fix - notifies are deferred until the parent method 18681completes execution. This fixes the "mutex already acquired" 18682issue seen occasionally. 18683 18684Part of the "implicit conversion" rules in ACPI 2.0 have been 18685found to cause compatibility problems with existing ASL/AML. The 18686convert "result-to-target-type" implementation has been removed 18687for stores to method Args and Locals. Source operand conversion 18688is still fully implemented. Possible changes to ACPI 2.0 18689specification pending. 18690 18691Fix to AcpiRsCalculatePciRoutingTableLength to return correct 18692length. 18693 18694Fix for compiler warnings for 64-bit compiles. 18695 18696 Linux: 18697 18698/proc output aligned for easier parsing. 18699 18700Release-version compile problem fixed. 18701 18702New kernel configuration options documented in Configure.help. 18703 18704IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 18705context" message. 18706 18707 OSPM: 18708 18709Power resource driver integrated with bus manager. 18710 18711Fixed kernel fault during active cooling for thermal zones. 18712 18713Source Code: 18714 18715The source code tree has been restructured. 18716 18717 18718 18719------------------------------------------ 18720Summary of changes for this label: 03_02_01 18721 18722 Linux OS Services Layer (OSL): 18723 18724Major revision of all Linux-specific code. 18725 18726Modularized all ACPI-specific drivers. 18727 18728Added new thermal zone and power resource drivers. 18729 18730Revamped /proc interface (new functionality is under /proc/acpi). 18731 18732New kernel configuration options. 18733 18734 Linux known issues: 18735 18736New kernel configuration options not documented in Configure.help 18737yet. 18738 18739 18740Module dependencies not currently implemented. If used, they 18741should be loaded in this order: busmgr, power, ec, system, 18742processor, battery, ac_adapter, button, thermal. 18743 18744Modules will not load if CONFIG_MODVERSION is set. 18745 18746IBM 600E - entering S5 may reboot instead of shutting down. 18747 18748IBM 600E - Sleep button may generate "Invalid <NULL> context" 18749message. 18750 18751Some systems may fail with "execution mutex already acquired" 18752message. 18753 18754 ACPI CA Core Subsystem: 18755 18756Added a new OSL Interface, AcpiOsGetThreadId. This was required 18757for the deadlock detection code. Defined to return a non-zero, 32- 18758bit thread ID for the currently executing thread. May be a non- 18759zero constant integer on single-thread systems. 18760 18761Implemented deadlock detection for internal subsystem mutexes. We 18762may add conditional compilation for this code (debug only) later. 18763 18764ASL/AML Mutex object semantics are now fully supported. This 18765includes multiple acquires/releases by owner and support for the 18766 18767Mutex SyncLevel parameter. 18768 18769A new "Force Release" mechanism automatically frees all ASL 18770Mutexes that have been acquired but not released when a thread 18771exits the interpreter. This forces conformance to the ACPI spec 18772("All mutexes must be released when an invocation exits") and 18773prevents deadlocked ASL threads. This mechanism can be expanded 18774(later) to monitor other resource acquisitions if OEM ASL code 18775continues to misbehave (which it will). 18776 18777Several new ACPI exception codes have been added for the Mutex 18778support. 18779 18780Recursive method calls are now allowed and supported (the ACPI 18781spec does in fact allow recursive method calls.) The number of 18782recursive calls is subject to the restrictions imposed by the 18783SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 18784parameter. 18785 18786Implemented support for the SyncLevel parameter for control 18787methods (ACPI 2.0 feature) 18788 18789Fixed a deadlock problem when multiple threads attempted to use 18790the interpreter. 18791 18792Fixed a problem where the string length of a String package 18793element was not always set in a package returned from 18794AcpiEvaluateObject. 18795 18796Fixed a problem where the length of a String package element was 18797not always included in the length of the overall package returned 18798from AcpiEvaluateObject. 18799 18800Added external interfaces (Acpi*) to the ACPI debug memory 18801manager. This manager keeps a list of all outstanding 18802allocations, and can therefore detect memory leaks and attempts to 18803free memory blocks more than once. Useful for code such as the 18804power manager, etc. May not be appropriate for device drivers. 18805Performance with the debug code enabled is slow. 18806 18807The ACPI Global Lock is now an optional hardware element. 18808 18809 ASL Compiler Version X2015: 18810 18811Integrated changes to allow the compiler to be generated on 18812multiple platforms. 18813 18814Linux makefile added to generate the compiler on Linux 18815 18816 Source Code: 18817 18818All platform-specific headers have been moved to their own 18819subdirectory, Include/Platform. 18820 18821New source file added, Interpreter/ammutex.c 18822 18823New header file, Include/acstruct.h 18824 18825 Documentation: 18826 18827The programmer reference has been updated for the following new 18828interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 18829 18830 ------------------------------------------ 18831Summary of changes for this label: 02_08_01 18832 18833Core ACPI CA Subsystem: Fixed a problem where an error was 18834incorrectly returned if the return resource buffer was larger than 18835the actual data (in the resource interfaces). 18836 18837References to named objects within packages are resolved to the 18838 18839full pathname string before packages are returned directly (via 18840the AcpiEvaluateObject interface) or indirectly via the resource 18841interfaces. 18842 18843Linux OS Services Layer (OSL): 18844 18845Improved /proc battery interface. 18846 18847 18848Added C-state debugging output and other miscellaneous fixes. 18849 18850ASL Compiler Version X2014: 18851 18852All defined method arguments can now be used as local variables, 18853including the ones that are not actually passed in as parameters. 18854The compiler tracks initialization of the arguments and issues an 18855exception if they are used without prior assignment (just like 18856locals). 18857 18858The -o option now specifies a filename prefix that is used for all 18859output files, including the AML output file. Otherwise, the 18860default behavior is as follows: 1) the AML goes to the file 18861specified in the DSDT. 2) all other output files use the input 18862source filename as the base. 18863 18864 ------------------------------------------ 18865Summary of changes for this label: 01_25_01 18866 18867Core ACPI CA Subsystem: Restructured the implementation of object 18868store support within the interpreter. This includes support for 18869the Store operator as well as any ASL operators that include a 18870target operand. 18871 18872Partially implemented support for Implicit Result-to-Target 18873conversion. This is when a result object is converted on the fly 18874to the type of an existing target object. Completion of this 18875support is pending further analysis of the ACPI specification 18876concerning this matter. 18877 18878CPU-specific code has been removed from the subsystem (hardware 18879directory). 18880 18881New Power Management Timer functions added 18882 18883Linux OS Services Layer (OSL): Moved system state transition code 18884to the core, fixed it, and modified Linux OSL accordingly. 18885 18886Fixed C2 and C3 latency calculations. 18887 18888 18889We no longer use the compilation date for the version message on 18890initialization, but retrieve the version from AcpiGetSystemInfo(). 18891 18892Incorporated for fix Sony VAIO machines. 18893 18894Documentation: The Programmer Reference has been updated and 18895reformatted. 18896 18897 18898ASL Compiler: Version X2013: Fixed a problem where the line 18899numbering and error reporting could get out of sync in the 18900presence of multiple include files. 18901 18902 ------------------------------------------ 18903Summary of changes for this label: 01_15_01 18904 18905Core ACPI CA Subsystem: 18906 18907Implemented support for type conversions in the execution of the 18908ASL Concatenate operator (The second operand is converted to 18909match the type of the first operand before concatenation.) 18910 18911Support for implicit source operand conversion is partially 18912implemented. The ASL source operand types Integer, Buffer, and 18913String are freely interchangeable for most ASL operators and are 18914converted by the interpreter on the fly as required. Implicit 18915Target operand conversion (where the result is converted to the 18916target type before storing) is not yet implemented. 18917 18918Support for 32-bit and 64-bit BCD integers is implemented. 18919 18920Problem fixed where a field read on an aligned field could cause a 18921read past the end of the field. 18922 18923New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 18924does not return a value, but the caller expects one. (The ASL 18925compiler flags this as a warning.) 18926 18927ASL Compiler: 18928 18929Version X2011: 189301. Static typechecking of all operands is implemented. This 18931prevents the use of invalid objects (such as using a Package where 18932an Integer is required) at compile time instead of at interpreter 18933run-time. 189342. The ASL source line is printed with ALL errors and warnings. 189353. Bug fix for source EOF without final linefeed. 189364. Debug option is split into a parse trace and a namespace trace. 189375. Namespace output option (-n) includes initial values for 18938integers and strings. 189396. Parse-only option added for quick syntax checking. 189407. Compiler checks for duplicate ACPI name declarations 18941 18942Version X2012: 189431. Relaxed typechecking to allow interchangeability between 18944strings, integers, and buffers. These types are now converted by 18945the interpreter at runtime. 189462. Compiler reports time taken by each internal subsystem in the 18947debug output file. 18948 18949 18950 ------------------------------------------ 18951Summary of changes for this label: 12_14_00 18952 18953ASL Compiler: 18954 18955This is the first official release of the compiler. Since the 18956compiler requires elements of the Core Subsystem, this label 18957synchronizes everything. 18958 18959------------------------------------------ 18960Summary of changes for this label: 12_08_00 18961 18962 18963Fixed a problem where named references within the ASL definition 18964of both OperationRegions and CreateXXXFields did not work 18965properly. The symptom was an AE_AML_OPERAND_TYPE during 18966initialization of the region/field. This is similar (but not 18967related internally) to the problem that was fixed in the last 18968label. 18969 18970Implemented both 32-bit and 64-bit support for the BCD ASL 18971functions ToBCD and FromBCD. 18972 18973Updated all legal headers to include "2000" in the copyright 18974years. 18975 18976 ------------------------------------------ 18977Summary of changes for this label: 12_01_00 18978 18979Fixed a problem where method invocations within the ASL definition 18980of both OperationRegions and CreateXXXFields did not work 18981properly. The symptom was an AE_AML_OPERAND_TYPE during 18982initialization of the region/field: 18983 18984 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 18985[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 18986(0x3005) 18987 18988Fixed a problem where operators with more than one nested 18989subexpression would fail. The symptoms were varied, by mostly 18990AE_AML_OPERAND_TYPE errors. This was actually a rather serious 18991problem that has gone unnoticed until now. 18992 18993 Subtract (Add (1,2), Multiply (3,4)) 18994 18995Fixed a problem where AcpiGetHandle didn't quite get fixed in the 18996previous build (The prefix part of a relative path was handled 18997incorrectly). 18998 18999Fixed a problem where Operation Region initialization failed if 19000the operation region name was a "namepath" instead of a simple 19001"nameseg". Symptom was an AE_NO_OPERAND error. 19002 19003Fixed a problem where an assignment to a local variable via the 19004indirect RefOf mechanism only worked for the first such 19005assignment. Subsequent assignments were ignored. 19006 19007 ------------------------------------------ 19008Summary of changes for this label: 11_15_00 19009 19010ACPI 2.0 table support with backwards support for ACPI 1.0 and the 190110.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 19012the AML interpreter does NOT have support for the new 2.0 ASL 19013grammar terms at this time. 19014 19015All ACPI hardware access is via the GAS structures in the ACPI 2.0 19016FADT. 19017 19018All physical memory addresses across all platforms are now 64 bits 19019wide. Logical address width remains dependent on the platform 19020(i.e., "void *"). 19021 19022AcpiOsMapMemory interface changed to a 64-bit physical address. 19023 19024The AML interpreter integer size is now 64 bits, as per the ACPI 190252.0 specification. 19026 19027For backwards compatibility with ACPI 1.0, ACPI tables with a 19028revision number less than 2 use 32-bit integers only. 19029 19030Fixed a problem where the evaluation of OpRegion operands did not 19031always resolve them to numbers properly. 19032 19033------------------------------------------ 19034Summary of changes for this label: 10_20_00 19035 19036Fix for CBN_._STA issue. This fix will allow correct access to 19037CBN_ OpRegions when the _STA returns 0x8. 19038 19039Support to convert ACPI constants (Ones, Zeros, One) to actual 19040values before a package object is returned 19041 19042Fix for method call as predicate to if/while construct causing 19043incorrect if/while behavior 19044 19045Fix for Else block package lengths sometimes calculated wrong (if 19046block > 63 bytes) 19047 19048Fix for Processor object length field, was always zero 19049 19050Table load abort if FACP sanity check fails 19051 19052Fix for problem with Scope(name) if name already exists 19053 19054Warning emitted if a named object referenced cannot be found 19055(resolved) during method execution. 19056 19057 19058 19059 19060 19061------------------------------------------ 19062Summary of changes for this label: 9_29_00 19063 19064New table initialization interfaces: AcpiInitializeSubsystem no 19065longer has any parameters AcpiFindRootPointer - Find the RSDP (if 19066necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 19067>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 19068AcpiLoadTables 19069 19070Note: These interface changes require changes to all existing OSDs 19071 19072The PCI_Config default address space handler is always installed 19073at the root namespace object. 19074 19075------------------------------------------- 19076Summary of changes for this label: 09_15_00 19077 19078The new initialization architecture is implemented. New 19079interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 19080AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 19081 19082(Namespace is automatically loaded when a table is loaded) 19083 19084The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1908552 bytes to 32 bytes. There is usually one of these for every 19086namespace object, so the memory savings is significant. 19087 19088Implemented just-in-time evaluation of the CreateField operators. 19089 19090Bug fixes for IA-64 support have been integrated. 19091 19092Additional code review comments have been implemented 19093 19094The so-called "third pass parse" has been replaced by a final walk 19095through the namespace to initialize all operation regions (address 19096spaces) and fields that have not yet been initialized during the 19097execution of the various _INI and REG methods. 19098 19099New file - namespace/nsinit.c 19100 19101------------------------------------------- 19102Summary of changes for this label: 09_01_00 19103 19104Namespace manager data structures have been reworked to change the 19105primary object from a table to a single object. This has 19106resulted in dynamic memory savings of 3X within the namespace and 191072X overall in the ACPI CA subsystem. 19108 19109Fixed problem where the call to AcpiEvFindPciRootBuses was 19110inadvertently left commented out. 19111 19112Reduced the warning count when generating the source with the GCC 19113compiler. 19114 19115Revision numbers added to each module header showing the 19116SourceSafe version of the file. Please refer to this version 19117number when giving us feedback or comments on individual modules. 19118 19119The main object types within the subsystem have been renamed to 19120clarify their purpose: 19121 19122ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 19123ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 19124ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 19125 19126NOTE: no changes to the initialization sequence are included in 19127this label. 19128 19129------------------------------------------- 19130Summary of changes for this label: 08_23_00 19131 19132Fixed problem where TerminateControlMethod was being called 19133multiple times per method 19134 19135Fixed debugger problem where single stepping caused a semaphore to 19136be oversignalled 19137 19138Improved performance through additional parse object caching - 19139added ACPI_EXTENDED_OP type 19140 19141------------------------------------------- 19142Summary of changes for this label: 08_10_00 19143 19144Parser/Interpreter integration: Eliminated the creation of 19145complete parse trees for ACPI tables and control methods. 19146Instead, parse subtrees are created and then deleted as soon as 19147they are processed (Either entered into the namespace or executed 19148by the interpreter). This reduces the use of dynamic kernel 19149memory significantly. (about 10X) 19150 19151Exception codes broken into classes and renumbered. Be sure to 19152recompile all code that includes acexcep.h. Hopefully we won't 19153have to renumber the codes again now that they are split into 19154classes (environment, programmer, AML code, ACPI table, and 19155internal). 19156 19157Fixed some additional alignment issues in the Resource Manager 19158subcomponent 19159 19160Implemented semaphore tracking in the AcpiExec utility, and fixed 19161several places where mutexes/semaphores were being unlocked 19162without a corresponding lock operation. There are no known 19163semaphore or mutex "leaks" at this time. 19164 19165Fixed the case where an ASL Return operator is used to return an 19166unnamed package. 19167 19168------------------------------------------- 19169Summary of changes for this label: 07_28_00 19170 19171Fixed a problem with the way addresses were calculated in 19172AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 19173manifested itself when a Field was created with WordAccess or 19174DwordAccess, but the field unit defined within the Field was less 19175 19176than a Word or Dword. 19177 19178Fixed a problem in AmlDumpOperands() module's loop to pull 19179operands off of the operand stack to display information. The 19180problem manifested itself as a TLB error on 64-bit systems when 19181accessing an operand stack with two or more operands. 19182 19183Fixed a problem with the PCI configuration space handlers where 19184context was getting confused between accesses. This required a 19185change to the generic address space handler and address space 19186setup definitions. Handlers now get both a global handler context 19187(this is the one passed in by the user when executing 19188AcpiInstallAddressSpaceHandler() and a specific region context 19189that is unique to each region (For example, the _ADR, _SEG and 19190_BBN values associated with a specific region). The generic 19191function definitions have changed to the following: 19192 19193typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 19194UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 19195*HandlerContext, // This used to be void *Context void 19196*RegionContext); // This is an additional parameter 19197 19198typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 19199RegionHandle, UINT32 Function, void *HandlerContext, void 19200**RegionContext); // This used to be **ReturnContext 19201 19202------------------------------------------- 19203Summary of changes for this label: 07_21_00 19204 19205Major file consolidation and rename. All files within the 19206interpreter have been renamed as well as most header files. This 19207was done to prevent collisions with existing files in the host 19208OSs -- filenames such as "config.h" and "global.h" seem to be 19209quite common. The VC project files have been updated. All 19210makefiles will require modification. 19211 19212The parser/interpreter integration continues in Phase 5 with the 19213implementation of a complete 2-pass parse (the AML is parsed 19214twice) for each table; This avoids the construction of a huge 19215parse tree and therefore reduces the amount of dynamic memory 19216required by the subsystem. Greater use of the parse object cache 19217means that performance is unaffected. 19218 19219Many comments from the two code reviews have been rolled in. 19220 19221The 64-bit alignment support is complete. 19222 19223------------------------------------------- 19224Summary of changes for this label: 06_30_00 19225 19226With a nod and a tip of the hat to the technology of yesteryear, 19227we've added support in the source code for 80 column output 19228devices. The code is now mostly constrained to 80 columns or 19229less to support environments and editors that 1) cannot display 19230or print more than 80 characters on a single line, and 2) cannot 19231disable line wrapping. 19232 19233A major restructuring of the namespace data structure has been 19234completed. The result is 1) cleaner and more 19235understandable/maintainable code, and 2) a significant reduction 19236in the dynamic memory requirement for each named ACPI object 19237(almost half). 19238 19239------------------------------------------- 19240Summary of changes for this label: 06_23_00 19241 19242Linux support has been added. In order to obtain approval to get 19243the ACPI CA subsystem into the Linux kernel, we've had to make 19244quite a few changes to the base subsystem that will affect all 19245users (all the changes are generic and OS- independent). The 19246effects of these global changes have been somewhat far reaching. 19247Files have been merged and/or renamed and interfaces have been 19248renamed. The major changes are described below. 19249 19250Osd* interfaces renamed to AcpiOs* to eliminate namespace 19251pollution/confusion within our target kernels. All OSD 19252interfaces must be modified to match the new naming convention. 19253 19254Files merged across the subsystem. A number of the smaller source 19255and header files have been merged to reduce the file count and 19256increase the density of the existing files. There are too many 19257to list here. In general, makefiles that call out individual 19258files will require rebuilding. 19259 19260Interpreter files renamed. All interpreter files now have the 19261prefix am* instead of ie* and is*. 19262 19263Header files renamed: The acapi.h file is now acpixf.h. The 19264acpiosd.h file is now acpiosxf.h. We are removing references to 19265the acronym "API" since it is somewhat windowsy. The new name is 19266"external interface" or xface or xf in the filenames.j 19267 19268 19269All manifest constants have been forced to upper case (some were 19270mixed case.) Also, the string "ACPI_" has been prepended to many 19271(not all) of the constants, typedefs, and structs. 19272 19273The globals "DebugLevel" and "DebugLayer" have been renamed 19274"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 19275 19276All other globals within the subsystem are now prefixed with 19277"AcpiGbl_" Internal procedures within the subsystem are now 19278prefixed with "Acpi" (with only a few exceptions). The original 19279two-letter abbreviation for the subcomponent remains after "Acpi" 19280- for example, CmCallocate became AcpiCmCallocate. 19281 19282Added a source code translation/conversion utility. Used to 19283generate the Linux source code, it can be modified to generate 19284other types of source as well. Can also be used to cleanup 19285existing source by removing extraneous spaces and blank lines. 19286Found in tools/acpisrc/* 19287 19288OsdUnMapMemory was renamed to OsdUnmapMemory and then 19289AcpiOsUnmapMemory. (UnMap became Unmap). 19290 19291A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 19292When set to one, this indicates that the caller wants to use the 19293 19294semaphore as a mutex, not a counting semaphore. ACPI CA uses 19295both types. However, implementers of this call may want to use 19296different OS primitives depending on the type of semaphore 19297requested. For example, some operating systems provide separate 19298 19299"mutex" and "semaphore" interfaces - where the mutex interface is 19300much faster because it doesn't have all the overhead of a full 19301semaphore implementation. 19302 19303Fixed a deadlock problem where a method that accesses the PCI 19304address space can block forever if it is the first access to the 19305space. 19306 19307------------------------------------------- 19308Summary of changes for this label: 06_02_00 19309 19310Support for environments that cannot handle unaligned data 19311accesses (e.g. firmware and OS environments devoid of alignment 19312handler technology namely SAL/EFI and the IA-64 Linux kernel) has 19313been added (via configurable macros) in these three areas: - 19314Transfer of data from the raw AML byte stream is done via byte 19315moves instead of word/dword/qword moves. - External objects are 19316aligned within the user buffer, including package elements (sub- 19317objects). - Conversion of name strings to UINT32 Acpi Names is now 19318done byte-wise. 19319 19320The Store operator was modified to mimic Microsoft's 19321implementation when storing to a Buffer Field. 19322 19323Added a check of the BM_STS bit before entering C3. 19324 19325The methods subdirectory has been obsoleted and removed. A new 19326file, cmeval.c subsumes the functionality. 19327 19328A 16-bit (DOS) version of AcpiExec has been developed. The 19329makefile is under the acpiexec directory. 19330