changes.txt revision 281687
1---------------------------------------- 210 April 2015. Summary of changes for version 20150410: 3 4Reverted a change introduced in version 20150408 that caused 5a regression in the disassembler where incorrect operator 6symbols could be emitted. 7 8---------------------------------------- 908 April 2015. Summary of changes for version 20150408: 10 11 121) ACPICA kernel-resident subsystem: 13 14Permanently set the return value for the _REV predefined name. It now 15returns 2 (was 5). This matches other ACPI implementations. _REV will be 16deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2 17for ACPI 2.0 and later. It should never be used to differentiate or 18identify operating systems. 19 20Added the "Windows 2015" string to the _OSI support. ACPICA will now 21return TRUE to a query with this string. 22 23Fixed several issues with the local version of the printf function. 24 25Added the C99 compiler option (-std=c99) to the Unix makefiles. 26 27 Current Release: 28 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total 29 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total 30 Previous Release: 31 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 32 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 33 34 352) iASL Compiler/Disassembler and Tools: 36 37iASL: Implemented an enhancement to the constant folding feature to 38transform the parse tree to a simple Store operation whenever possible: 39 Add (2, 3, X) ==> is converted to: Store (5, X) 40 X = 2 + 3 ==> is converted to: Store (5, X) 41 42Updated support for the SLIC table (Software Licensing Description Table) 43in both the Data Table compiler and the disassembler. The SLIC table 44support now conforms to "Microsoft Software Licensing Tables (SLIC and 45MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data 46following the ACPI header is now defined to be "Proprietary Data", and as 47such, can only be entered or displayed as a hex data block. 48 49Implemented full support for the MSDM table as described in the document 50above. Note: The format of MSDM is similar to SLIC. Any MSDM data 51following the ACPI header is defined to be "Proprietary Data", and can 52only be entered or displayed as a hex data block. 53 54Implemented the -Pn option for the iASL Table Compiler (was only 55implemented for the ASL compiler). This option disables the iASL 56preprocessor. 57 58Disassembler: For disassembly of Data Tables, added a comment field 59around the Ascii equivalent data that is emitted as part of the "Raw 60Table Data" block. This prevents the iASL Preprocessor from possible 61confusion if/when the table is compiled. 62 63Disassembler: Added an option (-df) to force the disassembler to assume 64that the table being disassembled contains valid AML. This feature is 65useful for disassembling AML files that contain ACPI signatures other 66than DSDT or SSDT (such as OEMx or other signatures). 67 68Changes for the EFI version of the tools: 691) Fixed a build error/issue 702) Fixed a cast warning 71 72iASL: Fixed a path issue with the __FILE__ operator by making the 73directory prefix optional within the internal SplitInputFilename 74function. 75 76Debugger: Removed some unused global variables. 77 78Tests: Updated the makefile for proper generation of the AAPITS suite. 79 80---------------------------------------- 8104 February 2015. Summary of changes for version 20150204: 82 83ACPICA kernel-resident subsystem: 84 85Updated all ACPICA copyrights and signons to 2014. Added the 2014 86copyright to all module headers and signons, including the standard Linux 87header. This affects virtually every file in the ACPICA core subsystem, 88iASL compiler, all ACPICA utilities, and the test suites. 89 90Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues. 91A raw gpe handling mechanism was created to allow better handling of GPE 92storms that aren't easily managed by the normal handler. The raw handler 93allows disabling/renabling of the the GPE so that interrupt storms can be 94avoided in cases where events cannot be timely serviced. In this 95scenario, handlers should use the AcpiSetGpe() API to disable/enable the 96GPE. This API will leave the reference counts undisturbed, thereby 97preventing unintentional clearing of the GPE when the intent in only to 98temporarily disable it. Raw handlers allow enabling and disabling of a 99GPE by removing GPE register locking. As such, raw handlers much provide 100their own locks while using GPE API's to protect access to GPE data 101structures. 102Lv Zheng 103 104Events: Always modify GPE registers under the GPE lock. 105Applies GPE lock around AcpiFinishGpe() to protect access to GPE register 106values. Reported as bug by joe.liu@apple.com. 107 108Unix makefiles: Separate option to disable optimizations and 109_FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the 110NOOPT disable option and creates a separate flag (NOFORTIFY) for this 111purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined 112errors when building ACPICA. This allows disabling the option without 113also having to disable optimazations. 114David Box 115 116 Current Release: 117 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 118 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total 119 120---------------------------------------- 12107 November 2014. Summary of changes for version 20141107: 122 123This release is available at https://acpica.org/downloads 124 125This release introduces and implements language extensions to ASL that 126provide support for symbolic ("C-style") operators and expressions. These 127language extensions are known collectively as ASL+. 128 129 1301) iASL Compiler/Disassembler and Tools: 131 132Disassembler: Fixed a problem with disassembly of the UartSerialBus 133macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E. 134Box. 135 136Disassembler: Fixed the Unicode macro support to add escape sequences. 137All non-printable ASCII values are emitted as escape sequences, as well 138as the standard escapes for quote and backslash. Ensures that the 139disassembled macro can be correctly recompiled. 140 141iASL: Added Printf/Fprintf macros for formatted output. These macros are 142translated to existing AML Concatenate and Store operations. Printf 143writes to the ASL Debug object. Fprintf allows the specification of an 144ASL name as the target. Only a single format specifier is required, %o, 145since the AML interpreter dynamically converts objects to the required 146type. David E. Box. 147 148 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 149 (Concatenate (Concatenate (Concatenate ("", Arg0), 150 ": Unexpected value for "), Arg1), ", "), Arg2), 151 " at line "), Arg3), Debug) 152 153 (new) Printf ("%o: Unexpected value for %o, %o at line %o", 154 Arg0, Arg1, Arg2, Arg3) 155 156 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 157 ("", Arg1), ": "), Arg0), " Successful"), STR1) 158 159 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0) 160 161iASL: Added debug options (-bp, -bt) to dynamically prune levels of the 162ASL parse tree before the AML code is generated. This allows blocks of 163ASL code to be removed in order to help locate and identify problem 164devices and/or code. David E. Box. 165 166AcpiExec: Added support (-fi) for an optional namespace object 167initialization file. This file specifies initial values for namespace 168objects as necessary for debugging and testing different ASL code paths 169that may be taken as a result of BIOS options. 170 171 1722) Overview of symbolic operator support for ASL (ASL+) 173------------------------------------------------------- 174 175As an extension to the ASL language, iASL implements support for symbolic 176(C-style) operators for math and logical expressions. This can greatly 177simplify ASL code as well as improve both readability and 178maintainability. These language extensions can exist concurrently with 179all legacy ASL code and expressions. 180 181The symbolic extensions are 100% compatible with existing AML 182interpreters, since no new AML opcodes are created. To implement the 183extensions, the iASL compiler transforms the symbolic expressions into 184the legacy ASL/AML equivalents at compile time. 185 186Full symbolic expressions are supported, along with the standard C 187precedence and associativity rules. 188 189Full disassembler support for the symbolic expressions is provided, and 190creates an automatic migration path for existing ASL code to ASL+ code 191via the disassembly process. By default, the disassembler now emits ASL+ 192code with symbolic expressions. An option (-dl) is provided to force the 193disassembler to emit legacy ASL code if desired. 194 195Below is the complete list of the currently supported symbolic operators 196with examples. See the iASL User Guide for additional information. 197 198 199ASL+ Syntax Legacy ASL Equivalent 200----------- --------------------- 201 202 // Math operators 203 204Z = X + Y Add (X, Y, Z) 205Z = X - Y Subtract (X, Y, Z) 206Z = X * Y Multiply (X, Y, Z) 207Z = X / Y Divide (X, Y, , Z) 208Z = X % Y Mod (X, Y, Z) 209Z = X << Y ShiftLeft (X, Y, Z) 210Z = X >> Y ShiftRight (X, Y, Z) 211Z = X & Y And (X, Y, Z) 212Z = X | Y Or (X, Y, Z) 213Z = X ^ Y Xor (X, Y, Z) 214Z = ~X Not (X, Z) 215X++ Increment (X) 216X-- Decrement (X) 217 218 // Logical operators 219 220(X == Y) LEqual (X, Y) 221(X != Y) LNotEqual (X, Y) 222(X < Y) LLess (X, Y) 223(X > Y) LGreater (X, Y) 224(X <= Y) LLessEqual (X, Y) 225(X >= Y) LGreaterEqual (X, Y) 226(X && Y) LAnd (X, Y) 227(X || Y) LOr (X, Y) 228(!X) LNot (X) 229 230 // Assignment and compound assignment operations 231 232X = Y Store (Y, X) 233X += Y Add (X, Y, X) 234X -= Y Subtract (X, Y, X) 235X *= Y Multiply (X, Y, X) 236X /= Y Divide (X, Y, , X) 237X %= Y Mod (X, Y, X) 238X <<= Y ShiftLeft (X, Y, X) 239X >>= Y ShiftRight (X, Y, X) 240X &= Y And (X, Y, X) 241X |= Y Or (X, Y, X) 242X ^= Y Xor (X, Y, X) 243 244 2453) ASL+ Examples: 246----------------- 247 248Legacy ASL: 249 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual ( 250 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530, 2510x03FB), 252 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0)))) 253 { 254 And (MEMB, 0xFFFFFFF0, SRMB) 255 Store (MEMB, Local2) 256 Store (PDBM, Local1) 257 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM) 258 Store (SRMB, MEMB) 259 Or (PDBM, 0x02, PDBM) 260 } 261 262ASL+ version: 263 If (((R510 & 0x03FB) == 0x02E0) || 264 ((R520 & 0x03FB) == 0x02E0) || 265 ((R530 & 0x03FB) == 0x02E0) || 266 ((R540 & 0x03FB) == 0x02E0)) 267 { 268 SRMB = (MEMB & 0xFFFFFFF0) 269 Local2 = MEMB 270 Local1 = PDBM 271 PDBM &= 0xFFFFFFFFFFFFFFF9 272 MEMB = SRMB 273 PDBM |= 0x02 274 } 275 276Legacy ASL: 277 Store (0x1234, Local1) 278 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3) 279 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3) 280 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3) 281 Store (Index (PKG1, 0x03), Local6) 282 Store (Add (Local3, Local2), Debug) 283 Add (Local1, 0x0F, Local2) 284 Add (Local1, Multiply (Local2, Local3), Local2) 285 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3) 286 287ASL+ version: 288 Local1 = 0x1234 289 Local3 = (((Local1 + TEST) + 0x20) * Local2) 290 Local3 = (Local2 * ((Local1 + TEST) + 0x20)) 291 Local3 = (Local1 + (TEST + (0x20 * Local2))) 292 Local6 = Index (PKG1, 0x03) 293 Debug = (Local3 + Local2) 294 Local2 = (Local1 + 0x0F) 295 Local2 = (Local1 + (Local2 * Local3)) 296 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1)) 297 298 299---------------------------------------- 30026 September 2014. Summary of changes for version 20140926: 301 3021) ACPICA kernel-resident subsystem: 303 304Updated the GPIO operation region handler interface (GeneralPurposeIo). 305In order to support GPIO Connection objects with multiple pins, along 306with the related Field objects, the following changes to the interface 307have been made: The Address is now defined to be the offset in bits of 308the field unit from the previous invocation of a Connection. It can be 309viewed as a "Pin Number Index" into the connection resource descriptor. 310The BitWidth is the exact bit width of the field. It is usually one bit, 311but not always. See the ACPICA reference guide (section 8.8.6.2.1) for 312additional information and examples. 313 314GPE support: During ACPICA/GPE initialization, ensure that all GPEs with 315corresponding _Lxx/_Exx methods are disabled (they may have been enabled 316by the firmware), so that they cannot fire until they are enabled via 317AcpiUpdateAllGpes. Rafael J. Wysocki. 318 319Added a new return flag for the Event/GPE status interfaces -- 320AcpiGetEventStatus and AcpiGetGpeStatus. The new 321ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or 322GPE currently has a handler associated with it, and can thus actually 323affect the system. Lv Zheng. 324 325Example Code and Data Size: These are the sizes for the OS-independent 326acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 327debug version of the code includes the debug output trace mechanism and 328has a much larger code and data size. 329 330 Current Release: 331 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 332 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 333 Previous Release: 334 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 335 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 336 3372) iASL Compiler/Disassembler and Tools: 338 339iASL: Fixed a memory allocation/free regression introduced in 20140828 340that could cause the compiler to crash. This was introduced inadvertently 341during the effort to eliminate compiler memory leaks. ACPICA BZ 1111, 3421113. 343 344iASL: Removed two error messages that have been found to create false 345positives, until they can be fixed and fully validated (ACPICA BZ 1112): 3461) Illegal forward reference within a method 3472) Illegal reference across two methods 348 349iASL: Implemented a new option (-lm) to create a hardware mapping file 350that summarizes all GPIO, I2C, SPI, and UART connections. This option 351works for both the compiler and disassembler. See the iASL compiler user 352guide for additional information and examples (section 6.4.6). 353 354AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to 355version 2. This corrects the AE_BAD_HEADER exception seen on systems with 356a version 1 RSDP. Lv Zheng ACPICA BZ 1097. 357 358AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode 359unless STDIN is actually a terminal. Assists with batch-mode processing. 360ACPICA BZ 1114. 361 362Disassembler/AcpiHelp: Added another large group of recognized _HID 363values. 364 365 366---------------------------------------- 36728 August 2014. Summary of changes for version 20140828: 368 3691) ACPICA kernel-resident subsystem: 370 371Fixed a problem related to the internal use of the Timer() operator where 372a 64-bit divide could cause an attempted link to a double-precision math 373library. This divide is not actually necessary, so the code was 374restructured to eliminate it. Lv Zheng. 375 376ACPI 5.1: Added support for the runtime validation of the _DSD package 377(similar to the iASL support). 378 379ACPI 5.1/Headers: Added support for the GICC affinity subtable to the 380SRAT table. Hanjun Guo <hanjun.guo@linaro.org>. 381 382Example Code and Data Size: These are the sizes for the OS-independent 383acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 384debug version of the code includes the debug output trace mechanism and 385has a much larger code and data size. 386 387 Current Release: 388 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 389 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 390 Previous Release: 391 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1 392 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 393 3942) iASL Compiler/Disassembler and Tools: 395 396AcpiExec: Fixed a problem on unix systems where the original terminal 397state was not always properly restored upon exit. Seen when using the -v 398option. ACPICA BZ 1104. 399 400iASL: Fixed a problem with the validation of the ranges/length within the 401Memory24 resource descriptor. There was a boundary condition when the 402range was equal to the (length -1) caused by the fact that these values 403are defined in 256-byte blocks, not bytes. ACPICA BZ 1098 404 405Disassembler: Fixed a problem with the GpioInt descriptor interrupt 406polarity 407flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword 408is 409now supported properly. 410 411ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported 412in the disassembler, data table compiler, and table template generator. 413 414iASL: Added a requirement for Device() objects that one of either a _HID 415or _ADR must exist within the scope of a Device, as per the ACPI 416specification. Remove a similar requirement that was incorrectly in place 417for the _DSD object. 418 419iASL: Added error detection for illegal named references within control 420methods that would cause runtime failures. Now trapped as errors are: 1) 421References to objects within a non-parent control method. 2) Forward 422references (within a method) -- for control methods, AML interpreters use 423a one-pass parse of control methods. ACPICA BZ 1008. 424 425iASL: Added error checking for dependencies related to the _PSx power 426methods. ACPICA BZ 1029. 4271) For _PS0, one of these must exist within the same scope: _PS1, _PS2, 428_PS3. 4292) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same 430scope. 431 432iASL and table compiler: Cleanup miscellaneous memory leaks by fully 433deploying the existing object and string caches and adding new caches for 434the table compiler. 435 436iASL: Split the huge parser source file into multiple subfiles to improve 437manageability. Generation now requires the M4 macro preprocessor, which 438is part of the Bison distribution on both unix and windows platforms. 439 440AcpiSrc: Fixed and removed all extraneous warnings generated during 441entire ACPICA source code scan and/or conversion. 442 443 444---------------------------------------- 445 44624 July 2014. Summary of changes for version 20140724: 447 448The ACPI 5.1 specification has been released and is available at: 449http://uefi.org/specs/access 450 451 4520) ACPI 5.1 support in ACPICA: 453 454ACPI 5.1 is fully supported in ACPICA as of this release. 455 456New predefined names. Support includes iASL and runtime ACPICA 457validation. 458 _CCA (Cache Coherency Attribute). 459 _DSD (Device-Specific Data). David Box. 460 461Modifications to existing ACPI tables. Support includes headers, iASL 462Data Table compiler, disassembler, and the template generator. 463 FADT - New fields and flags. Graeme Gregory. 464 GTDT - One new subtable and new fields. Tomasz Nowicki. 465 MADT - Two new subtables. Tomasz Nowicki. 466 PCCT - One new subtable. 467 468Miscellaneous. 469 New notification type for System Resource Affinity change events. 470 471 4721) ACPICA kernel-resident subsystem: 473 474Fixed a regression introduced in 20140627 where a fault can happen during 475the deletion of Alias AML namespace objects. The problem affected both 476the core ACPICA and the ACPICA tools including iASL and AcpiExec. 477 478Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a 479simple mechanism to enable wake GPEs that have no associated handler or 480control method. Rafael Wysocki. 481 482Updated the AcpiEnableGpe interface to disallow the enable if there is no 483handler or control method associated with the particular GPE. This will 484help avoid meaningless GPEs and even GPE floods. Rafael Wysocki. 485 486Updated GPE handling and dispatch by disabling the GPE before clearing 487the status bit for edge-triggered GPEs. Lv Zheng. 488 489Added Timer() support to the AML Debug object. The current timer value is 490now displayed with each invocation of (Store to) the debug object to 491enable simple generation of execution times for AML code (method 492execution for example.) ACPICA BZ 1093. 493 494Example Code and Data Size: These are the sizes for the OS-independent 495acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 496debug version of the code includes the debug output trace mechanism and 497has a much larger code and data size. 498 499 Current Release: 500 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total 501 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 502 Previous Release: 503 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 504 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 505 506 5072) iASL Compiler/Disassembler and Tools: 508 509Fixed an issue with the recently added local printf implementation, 510concerning width/precision specifiers that could cause incorrect output. 511Lv Zheng. ACPICA BZ 1094. 512 513Disassembler: Added support to detect buffers that contain UUIDs and 514disassemble them to an invocation of the ToUUID operator. Also emit 515commented descriptions of known ACPI-related UUIDs. 516 517AcpiHelp: Added support to display known ACPI-related UUIDs. New option, 518-u. Adds three new files. 519 520iASL: Update table compiler and disassembler for DMAR table changes that 521were introduced in September 2013. With assistance by David Woodhouse. 522 523---------------------------------------- 52427 June 2014. Summary of changes for version 20140627: 525 5261) ACPICA kernel-resident subsystem: 527 528Formatted Output: Implemented local versions of standard formatted output 529utilities such as printf, etc. Over time, it has been discovered that 530there are in fact many portability issues with printf, and the addition 531of this feature will fix/prevent these issues once and for all. Some 532known issues are summarized below: 533 5341) Output of 64-bit values is not portable. For example, UINT64 is %ull 535for the Linux kernel and is %uI64 for some MSVC versions. 5362) Invoking printf consistently in a manner that is portable across both 53732-bit and 64-bit platforms is difficult at best in many situations. 5383) The output format for pointers varies from system to system (leading 539zeros especially), and leads to inconsistent output from ACPICA across 540platforms. 5414) Certain platform-specific printf formats may conflict with ACPICA use. 5425) If there is no local C library available, ACPICA now has local support 543for printf. 544 545-- To address these printf issues in a complete manner, ACPICA now 546directly implements a small subset of printf format specifiers, only 547those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng. 548 549Implemented support for ACPICA generation within the EFI environment. 550Initially, the AcpiDump utility is supported in the UEFI shell 551environment. Lv Zheng. 552 553Added a new external interface, AcpiLogError, to improve ACPICA 554portability. This allows the host to redirect error messages from the 555ACPICA utilities. Lv Zheng. 556 557Added and deployed new OSL file I/O interfaces to improve ACPICA 558portability: 559 AcpiOsOpenFile 560 AcpiOsCloseFile 561 AcpiOsReadFile 562 AcpiOsWriteFile 563 AcpiOsGetFileOffset 564 AcpiOsSetFileOffset 565There are C library implementations of these functions in the new file 566service_layers/oslibcfs.c -- however, the functions can be implemented by 567the local host in any way necessary. Lv Zheng. 568 569Implemented a mechanism to disable/enable ACPI table checksum validation 570at runtime. This can be useful when loading tables very early during OS 571initialization when it may not be possible to map the entire table in 572order to compute the checksum. Lv Zheng. 573 574Fixed a buffer allocation issue for the Generic Serial Bus support. 575Originally, a fixed buffer length was used. This change allows for 576variable-length buffers based upon the protocol indicated by the field 577access attributes. Reported by Lan Tianyu. Lv Zheng. 578 579Fixed a problem where an object detached from a namespace node was not 580properly terminated/cleared and could cause a circular list problem if 581reattached. ACPICA BZ 1063. David Box. 582 583Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick. 584 585Fixed a possible memory leak in an error return path within the function 586AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King. 587 588Example Code and Data Size: These are the sizes for the OS-independent 589acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 590debug version of the code includes the debug output trace mechanism and 591has a much larger code and data size. 592 593 Current Release: 594 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 595 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 596 Previous Release: 597 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 598 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 599 600 6012) iASL Compiler/Disassembler and Tools: 602 603Disassembler: Add dump of ASCII equivalent text within a comment at the 604end of each line of the output for the Buffer() ASL operator. 605 606AcpiDump: Miscellaneous changes: 607 Fixed repetitive table dump in -n mode. 608 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if 609the ACPI 2.0 GUID fails. 610 611iASL: Fixed a problem where the compiler could fault if incorrectly given 612an acpidump output file as input. ACPICA BZ 1088. David Box. 613 614AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if 615they are invoked without any arguments. 616 617Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ 6181086. Colin Ian King. 619 620Disassembler: Cleaned up a block of code that extracts a parent Op 621object. Added a comment that explains that the parent is guaranteed to be 622valid in this case. ACPICA BZ 1069. 623 624---------------------------------------- 62524 April 2014. Summary of changes for version 20140424: 626 6271) ACPICA kernel-resident subsystem: 628 629Implemented support to skip/ignore NULL address entries in the RSDT/XSDT. 630Some of these tables are known to contain a trailing NULL entry. Lv 631Zheng. 632 633Removed an extraneous error message for the case where there are a large 634number of system GPEs (> 124). This was the "32-bit FADT register is too 635long to convert to GAS struct" message, which is irrelevant for GPEs 636since the GPEx_BLK_LEN fields of the FADT are always used instead of the 637(limited capacity) GAS bit length. Also, several changes to ensure proper 638support for GPE numbers > 255, where some "GPE number" fields were 8-bits 639internally. 640 641Implemented and deployed additional configuration support for the public 642ACPICA external interfaces. Entire classes of interfaces can now be 643easily modified or configured out, replaced by stubbed inline functions 644by default. Lv Zheng. 645 646Moved all public ACPICA runtime configuration globals to the public 647ACPICA external interface file for convenience. Also, removed some 648obsolete/unused globals. See the file acpixf.h. Lv Zheng. 649 650Documentation: Added a new section to the ACPICA reference describing the 651maximum number of GPEs that can be supported by the FADT-defined GPEs in 652block zero and one. About 1200 total. See section 4.4.1 of the ACPICA 653reference. 654 655Example Code and Data Size: These are the sizes for the OS-independent 656acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 657debug version of the code includes the debug output trace mechanism and 658has a much larger code and data size. 659 660 Current Release: 661 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 662 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 663 Previous Release: 664 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 665 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 666 667 6682) iASL Compiler/Disassembler and Tools: 669 670iASL and disassembler: Add full support for the LPIT table (Low Power 671Idle Table). Includes support in the disassembler, data table compiler, 672and template generator. 673 674AcpiDump utility: 6751) Add option to force the use of the RSDT (over the XSDT). 6762) Improve validation of the RSDP signature (use 8 chars instead of 4). 677 678iASL: Add check for predefined packages that are too large. For 679predefined names that contain subpackages, check if each subpackage is 680too large. (Check for too small already exists.) 681 682Debugger: Updated the GPE command (which simulates a GPE by executing the 683GPE code paths in ACPICA). The GPE device is now optional, and defaults 684to the GPE 0/1 FADT-defined blocks. 685 686Unix application OSL: Update line-editing support. Add additional error 687checking and take care not to reset terminal attributes on exit if they 688were never set. This should help guarantee that the terminal is always 689left in the previous state on program exit. 690 691---------------------------------------- 69225 March 2014. Summary of changes for version 20140325: 693 6941) ACPICA kernel-resident subsystem: 695 696Updated the auto-serialize feature for control methods. This feature 697automatically serializes all methods that create named objects in order 698to prevent runtime errors. The update adds support to ignore the 699currently executing AML SyncLevel when invoking such a method, in order 700to prevent disruption of any existing SyncLevel priorities that may exist 701in the AML code. Although the use of SyncLevels is relatively rare, this 702change fixes a regression where an AE_AML_MUTEX_ORDER exception can 703appear on some machines starting with the 20140214 release. 704 705Added a new external interface to allow the host to install ACPI tables 706very early, before the namespace is even created. AcpiInstallTable gives 707the host additional flexibility for ACPI table management. Tables can be 708installed directly by the host as if they had originally appeared in the 709XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables 710(anything except the DSDT and FACS). Adds a new file, tbdata.c, along 711with additional internal restructuring and cleanup. See the ACPICA 712Reference for interface details. Lv Zheng. 713 714Added validation of the checksum for all incoming dynamically loaded 715tables (via external interfaces or via AML Load/LoadTable operators). Lv 716Zheng. 717 718Updated the use of the AcpiOsWaitEventsComplete interface during Notify 719and GPE handler removal. Restructured calls to eliminate possible race 720conditions. Lv Zheng. 721 722Added a warning for the use/execution of the ASL/AML Unload (table) 723operator. This will help detect and identify machines that use this 724operator if and when it is ever used. This operator has never been seen 725in the field and the usage model and possible side-effects of the drastic 726runtime action of a full table removal are unknown. 727 728Reverted the use of #pragma push/pop which was introduced in the 20140214 729release. It appears that push and pop are not implemented by enough 730compilers to make the use of this feature feasible for ACPICA at this 731time. However, these operators may be deployed in a future ACPICA 732release. 733 734Added the missing EXPORT_SYMBOL macros for the install and remove SCI 735handler interfaces. 736 737Source code generation: 7381) Disabled the use of the "strchr" macro for the gcc-specific 739generation. For some versions of gcc, this macro can periodically expose 740a compiler bug which in turn causes compile-time error(s). 7412) Added support for PPC64 compilation. Colin Ian King. 742 743Example Code and Data Size: These are the sizes for the OS-independent 744acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 745debug version of the code includes the debug output trace mechanism and 746has a much larger code and data size. 747 748 Current Release: 749 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 750 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 751 Previous Release: 752 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 753 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 754 755 7562) iASL Compiler/Disassembler and Tools: 757 758Disassembler: Added several new features to improve the readability of 759the resulting ASL code. Extra information is emitted within comment 760fields in the ASL code: 7611) Known _HID/_CID values are decoded to descriptive text. 7622) Standard values for the Notify() operator are decoded to descriptive 763text. 7643) Target operands are expanded to full pathnames (in a comment) when 765possible. 766 767Disassembler: Miscellaneous updates for extern() handling: 7681) Abort compiler if file specified by -fe option does not exist. 7692) Silence unnecessary warnings about argument count mismatches. 7703) Update warning messages concerning unresolved method externals. 7714) Emit "UnknownObj" keyword for externals whose type cannot be 772determined. 773 774AcpiHelp utility: 7751) Added the -a option to display both the ASL syntax and the AML 776encoding for an input ASL operator. This effectively displays all known 777information about an ASL operator with one AcpiHelp invocation. 7782) Added substring match support (similar to a wildcard) for the -i 779(_HID/PNP IDs) option. 780 781iASL/Disassembler: Since this tool does not yet support execution on big- 782endian machines, added detection of endianness and an error message if 783execution is attempted on big-endian. Support for big-endian within iASL 784is a feature that is on the ACPICA to-be-done list. 785 786AcpiBin utility: 7871) Remove option to extract binary files from an acpidump; this function 788is made obsolete by the AcpiXtract utility. 7892) General cleanup of open files and allocated buffers. 790 791---------------------------------------- 79214 February 2014. Summary of changes for version 20140214: 793 7941) ACPICA kernel-resident subsystem: 795 796Implemented a new mechanism to proactively prevent problems with ill- 797behaved reentrant control methods that create named ACPI objects. This 798behavior is illegal as per the ACPI specification, but is nonetheless 799frequently seen in the field. Previously, this could lead to an 800AE_ALREADY_EXISTS exception if the method was actually entered by more 801than one thread. This new mechanism detects such methods at table load 802time and marks them "serialized" to prevent reentrancy. A new global 803option, AcpiGbl_AutoSerializeMethods, has been added to disable this 804feature if desired. This mechanism and global option obsoletes and 805supersedes the previous AcpiGbl_SerializeAllMethods option. 806 807Added the "Windows 2013" string to the _OSI support. ACPICA will now 808respond TRUE to _OSI queries with this string. It is the stated policy of 809ACPICA to add new strings to the _OSI support as soon as possible after 810they are defined. See the full ACPICA _OSI policy which has been added to 811the utilities/utosi.c file. 812 813Hardened/updated the _PRT return value auto-repair code: 8141) Do not abort the repair on a single subpackage failure, continue to 815check all subpackages. 8162) Add check for the minimum subpackage length (4). 8173) Properly handle extraneous NULL package elements. 818 819Added support to avoid the possibility of infinite loops when traversing 820object linked lists. Never allow an infinite loop, even in the face of 821corrupted object lists. 822 823ACPICA headers: Deployed the use of #pragma pack(push) and #pragma 824pack(pop) directives to ensure that the ACPICA headers are independent of 825compiler settings or other host headers. 826 827Example Code and Data Size: These are the sizes for the OS-independent 828acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 829debug version of the code includes the debug output trace mechanism and 830has a much larger code and data size. 831 832 Current Release: 833 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 834 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 835 Previous Release: 836 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 837 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 838 839 8402) iASL Compiler/Disassembler and Tools: 841 842iASL/Table-compiler: Fixed a problem with support for the SPMI table. The 843first reserved field was incorrectly forced to have a value of zero. This 844change correctly forces the field to have a value of one. ACPICA BZ 1081. 845 846Debugger: Added missing support for the "Extra" and "Data" subobjects 847when displaying object data. 848 849Debugger: Added support to display entire object linked lists when 850displaying object data. 851 852iASL: Removed the obsolete -g option to obtain ACPI tables from the 853Windows registry. This feature has been superseded by the acpidump 854utility. 855 856---------------------------------------- 85714 January 2014. Summary of changes for version 20140114: 858 8591) ACPICA kernel-resident subsystem: 860 861Updated all ACPICA copyrights and signons to 2014. Added the 2014 862copyright to all module headers and signons, including the standard Linux 863header. This affects virtually every file in the ACPICA core subsystem, 864iASL compiler, all ACPICA utilities, and the test suites. 865 866Improved parameter validation for AcpiInstallGpeBlock. Added the 867following checks: 8681) The incoming device handle refers to type ACPI_TYPE_DEVICE. 8692) There is not already a GPE block attached to the device. 870Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a 871device. 872 873Correctly support "references" in the ACPI_OBJECT. This change fixes the 874support to allow references (namespace nodes) to be passed as arguments 875to control methods via the evaluate object interface. This is probably 876most useful for testing purposes, however. 877 878Improved support for 32/64 bit physical addresses in printf()-like 879output. This change improves the support for physical addresses in printf 880debug statements and other output on both 32-bit and 64-bit hosts. It 881consistently outputs the appropriate number of bytes for each host. The 882%p specifier is unsatisfactory since it does not emit uniform output on 883all hosts/clib implementations (on some, leading zeros are not supported, 884leading to difficult-to-read output). 885 886Example Code and Data Size: These are the sizes for the OS-independent 887acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 888debug version of the code includes the debug output trace mechanism and 889has a much larger code and data size. 890 891 Current Release: 892 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 893 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 894 Previous Release: 895 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 896 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 897 898 8992) iASL Compiler/Disassembler and Tools: 900 901iASL: Fix a possible fault when using the Connection() operator. Fixes a 902problem if the parent Field definition for the Connection operator refers 903to an operation region that does not exist. ACPICA BZ 1064. 904 905AcpiExec: Load of local test tables is now optional. The utility has the 906capability to load some various tables to test features of ACPICA. 907However, there are enough of them that the output of the utility became 908confusing. With this change, only the required local tables are displayed 909(RSDP, XSDT, etc.) along with the actual tables loaded via the command 910line specification. This makes the default output simler and easier to 911understand. The -el command line option restores the original behavior 912for testing purposes. 913 914AcpiExec: Added support for overlapping operation regions. This change 915expands the simulation of operation regions by supporting regions that 916overlap within the given address space. Supports SystemMemory and 917SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031. 918 919AcpiExec: Added region handler support for PCI_Config and EC spaces. This 920allows AcpiExec to simulate these address spaces, similar to the current 921support for SystemMemory and SystemIO. 922 923Debugger: Added new command to read/write/compare all namespace objects. 924The command "test objects" will exercise the entire namespace by writing 925new values to each data object, and ensuring that the write was 926successful. The original value is then restored and verified. 927 928Debugger: Added the "test predefined" command. This change makes this 929test public and puts it under the new "test" command. The test executes 930each and every predefined name within the current namespace. 931 932---------------------------------------- 93318 December 2013. Summary of changes for version 20131218: 934 935Global note: The ACPI 5.0A specification was released this month. There 936are no changes needed for ACPICA since this release of ACPI is an 937errata/clarification release. The specification is available at 938acpi.info. 939 940 9411) ACPICA kernel-resident subsystem: 942 943Added validation of the XSDT root table if it is present. Some older 944platforms contain an XSDT that is ill-formed or otherwise invalid (such 945as containing some or all entries that are NULL pointers). This change 946adds a new function to validate the XSDT before actually using it. If the 947XSDT is found to be invalid, ACPICA will now automatically fall back to 948using the RSDT instead. Original implementation by Zhao Yakui. Ported to 949ACPICA and enhanced by Lv Zheng and Bob Moore. 950 951Added a runtime option to ignore the XSDT and force the use of the RSDT. 952This change adds a runtime option that will force ACPICA to use the RSDT 953instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec 954requires that an XSDT be used instead of the RSDT, the XSDT has been 955found to be corrupt or ill-formed on some machines. Lv Zheng. 956 957Added a runtime option to favor 32-bit FADT register addresses over the 95864-bit addresses. This change adds an option to favor 32-bit FADT 959addresses when there is a conflict between the 32-bit and 64-bit versions 960of the same register. The default behavior is to use the 64-bit version 961in accordance with the ACPI specification. This can now be overridden via 962the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng. 963 964During the change above, the internal "Convert FADT" and "Verify FADT" 965functions have been merged to simplify the code, making it easier to 966understand and maintain. ACPICA BZ 933. 967 968Improve exception reporting and handling for GPE block installation. 969Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the 970status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019. 971 972Added helper macros to extract bus/segment numbers from the HEST table. 973This change adds two macros to extract the encoded bus and segment 974numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT. 975Betty Dall <betty.dall@hp.com> 976 977Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used 978by ACPICA. It is not a public macro, so it should have no effect on 979existing OSV code. Lv Zheng. 980 981Example Code and Data Size: These are the sizes for the OS-independent 982acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 983debug version of the code includes the debug output trace mechanism and 984has a much larger code and data size. 985 986 Current Release: 987 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 988 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 989 Previous Release: 990 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 991 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 992 993 9942) iASL Compiler/Disassembler and Tools: 995 996Disassembler: Improved pathname support for emitted External() 997statements. This change adds full pathname support for external names 998that have been resolved internally by the inclusion of additional ACPI 999tables (via the iASL -e option). Without this change, the disassembler 1000can emit multiple externals for the same object, or it become confused 1001when the Scope() operator is used on an external object. Overall, greatly 1002improves the ability to actually recompile the emitted ASL code when 1003objects a referenced across multiple ACPI tables. Reported by Michael 1004Tsirkin (mst@redhat.com). 1005 1006Tests/ASLTS: Updated functional control suite to execute with no errors. 1007David Box. Fixed several errors related to the testing of the interpreter 1008slack mode. Lv Zheng. 1009 1010iASL: Added support to detect names that are declared within a control 1011method, but are unused (these are temporary names that are only valid 1012during the time the method is executing). A remark is issued for these 1013cases. ACPICA BZ 1022. 1014 1015iASL: Added full support for the DBG2 table. Adds full disassembler, 1016table compiler, and template generator support for the DBG2 table (Debug 1017Port 2 table). 1018 1019iASL: Added full support for the PCCT table, update the table definition. 1020Updates the PCCT table definition in the actbl3.h header and adds table 1021compiler and template generator support. 1022 1023iASL: Added an option to emit only error messages (no warnings/remarks). 1024The -ve option will enable only error messages, warnings and remarks are 1025suppressed. This can simplify debugging when only the errors are 1026important, such as when an ACPI table is disassembled and there are many 1027warnings and remarks -- but only the actual errors are of real interest. 1028 1029Example ACPICA code (source/tools/examples): Updated the example code so 1030that it builds to an actual working program, not just example code. Added 1031ACPI tables and execution of an example control method in the DSDT. Added 1032makefile support for Unix generation. 1033 1034---------------------------------------- 103515 November 2013. Summary of changes for version 20131115: 1036 1037This release is available at https://acpica.org/downloads 1038 1039 10401) ACPICA kernel-resident subsystem: 1041 1042Resource Manager: Fixed loop termination for the "get AML length" 1043function. The loop previously had an error termination on a NULL resource 1044pointer, which can never happen since the loop simply increments a valid 1045resource pointer. This fix changes the loop to terminate with an error on 1046an invalid end-of-buffer condition. The problem can be seen as an 1047infinite loop by callers to AcpiSetCurrentResources with an invalid or 1048corrupted resource descriptor, or a resource descriptor that is missing 1049an END_TAG descriptor. Reported by Dan Carpenter 1050<dan.carpenter@oracle.com>. Lv Zheng, Bob Moore. 1051 1052Table unload and ACPICA termination: Delete all attached data objects 1053during namespace node deletion. This fix updates namespace node deletion 1054to delete the entire list of attached objects (attached via 1055AcpiAttachObject) instead of just one of the attached items. ACPICA BZ 10561024. Tomasz Nowicki (tomasz.nowicki@linaro.org). 1057 1058ACPICA termination: Added support to delete all objects attached to the 1059root namespace node. This fix deletes any and all objects that have been 1060attached to the root node via AcpiAttachData. Previously, none of these 1061objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026. 1062 1063Debug output: Do not emit the function nesting level for the in-kernel 1064build. The nesting level is really only useful during a single-thread 1065execution. Therefore, only enable this output for the AcpiExec utility. 1066Also, only emit the thread ID when executing under AcpiExec (Context 1067switches are still always detected and a message is emitted). ACPICA BZ 1068972. 1069 1070Example Code and Data Size: These are the sizes for the OS-independent 1071acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1072debug version of the code includes the debug output trace mechanism and 1073has a much larger code and data size. 1074 1075 Current Release: 1076 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 1077 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 1078 Previous Release: 1079 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 1080 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 1081 1082 10832) iASL Compiler/Disassembler and Tools: 1084 1085AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the 1086correct portable POSIX header for terminal control functions. 1087 1088Disassembler: Fixed control method invocation issues related to the use 1089of the CondRefOf() operator. The problem is seen in the disassembly where 1090control method invocations may not be disassembled properly if the 1091control method name has been used previously as an argument to CondRefOf. 1092The solution is to not attempt to emit an external declaration for the 1093CondRefOf target (it is not necessary in the first place). This prevents 1094disassembler object type confusion. ACPICA BZ 988. 1095 1096Unix Makefiles: Added an option to disable compiler optimizations and the 1097_FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA 1098with optimizations (reportedly, gcc 4.4 for example). This change adds a 1099command line option for make (NOOPT) that disables all compiler 1100optimizations and the _FORTIFY_SOURCE compiler flag. The default 1101optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ 11021034. Lv Zheng, Bob Moore. 1103 1104Tests/ASLTS: Added options to specify individual test cases and modes. 1105This allows testers running aslts.sh to optionally specify individual 1106test modes and test cases. Also added an option to disable the forced 1107generation of the ACPICA tools from source if desired. Lv Zheng. 1108 1109---------------------------------------- 111027 September 2013. Summary of changes for version 20130927: 1111 1112This release is available at https://acpica.org/downloads 1113 1114 11151) ACPICA kernel-resident subsystem: 1116 1117Fixed a problem with store operations to reference objects. This change 1118fixes a problem where a Store operation to an ArgX object that contained 1119a 1120reference to a field object did not complete the automatic dereference 1121and 1122then write to the actual field object. Instead, the object type of the 1123field object was inadvertently changed to match the type of the source 1124operand. The new behavior will actually write to the field object (buffer 1125field or field unit), thus matching the correct ACPI-defined behavior. 1126 1127Implemented support to allow the host to redefine individual OSL 1128prototypes. This change enables the host to redefine OSL prototypes found 1129in the acpiosxf.h file. This allows the host to implement OSL interfaces 1130with a macro or inlined function. Further, it allows the host to add any 1131additional required modifiers such as __iomem, __init, __exit, etc., as 1132necessary on a per-interface basis. Enables maximum flexibility for the 1133OSL interfaces. Lv Zheng. 1134 1135Hardcoded the access width for the FADT-defined reset register. The ACPI 1136specification requires the reset register width to be 8 bits. ACPICA now 1137hardcodes the width to 8 and ignores the FADT width value. This provides 1138compatibility with other ACPI implementations that have allowed BIOS code 1139with bad register width values to go unnoticed. Matthew Garett, Bob 1140Moore, 1141Lv Zheng. 1142 1143Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is 1144used 1145in the OSL header (acpiosxf). The change modifies the position of this 1146macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid 1147build issues if the OSL defines the implementation of the interface to be 1148an inline stub function. Lv Zheng. 1149 1150Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA 1151initialization interfaces. This change adds a new macro for the main init 1152and terminate external interfaces in order to support hosts that require 1153additional or different processing for these functions. Changed from 1154ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv 1155Zheng, Bob Moore. 1156 1157Cleaned up the memory allocation macros for configurability. In the 1158common 1159case, the ACPI_ALLOCATE and related macros now resolve directly to their 1160respective AcpiOs* OSL interfaces. Two options: 11611) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by 1162default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define. 11632) For AcpiExec (and for debugging), the macros can optionally be 1164resolved 1165to the local ACPICA interfaces that track each allocation (local tracking 1166is used to immediately detect memory leaks). 1167Lv Zheng. 1168 1169Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel 1170to predefine this macro to either TRUE or FALSE during the system build. 1171 1172Replaced __FUNCTION_ with __func__ in the gcc-specific header. 1173 1174Example Code and Data Size: These are the sizes for the OS-independent 1175acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1176debug version of the code includes the debug output trace mechanism and 1177has a much larger code and data size. 1178 1179 Current Release: 1180 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 1181 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 1182 Previous Release: 1183 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 1184 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 1185 1186 11872) iASL Compiler/Disassembler and Tools: 1188 1189iASL: Implemented wildcard support for the -e option. This simplifies use 1190when there are many SSDTs that must be included to resolve external 1191method 1192declarations. ACPICA BZ 1041. Example: 1193 iasl -e ssdt*.dat -d dsdt.dat 1194 1195AcpiExec: Add history/line-editing for Unix/Linux systems. This change 1196adds a portable module that implements full history and limited line 1197editing for Unix and Linux systems. It does not use readline() due to 1198portability issues. Instead it uses the POSIX termio interface to put the 1199terminal in raw input mode so that the various special keys can be 1200trapped 1201(such as up/down-arrow for history support and left/right-arrow for line 1202editing). Uses the existing debugger history mechanism. ACPICA BZ 1036. 1203 1204AcpiXtract: Add support to handle (ignore) "empty" lines containing only 1205one or more spaces. This provides compatible with early or different 1206versions of the AcpiDump utility. ACPICA BZ 1044. 1207 1208AcpiDump: Do not ignore tables that contain only an ACPI table header. 1209Apparently, some BIOSs create SSDTs that contain an ACPI table header but 1210no other data. This change adds support to dump these tables. Any tables 1211shorter than the length of an ACPI table header remain in error (an error 1212message is emitted). Reported by Yi Li. 1213 1214Debugger: Echo actual command along with the "unknown command" message. 1215 1216---------------------------------------- 121723 August 2013. Summary of changes for version 20130823: 1218 12191) ACPICA kernel-resident subsystem: 1220 1221Implemented support for host-installed System Control Interrupt (SCI) 1222handlers. Certain ACPI functionality requires the host to handle raw 1223SCIs. For example, the "SCI Doorbell" that is defined for memory power 1224state support requires the host device driver to handle SCIs to examine 1225if the doorbell has been activated. Multiple SCI handlers can be 1226installed to allow for future expansion. New external interfaces are 1227AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for 1228details. Lv Zheng, Bob Moore. ACPICA BZ 1032. 1229 1230Operation region support: Never locally free the handler "context" 1231pointer. This change removes some dangerous code that attempts to free 1232the handler context pointer in some (rare) circumstances. The owner of 1233the handler owns this pointer and the ACPICA code should never touch it. 1234Although not seen to be an issue in any kernel, it did show up as a 1235problem (fault) under AcpiExec. Also, set the internal storage field for 1236the context pointer to zero when the region is deactivated, simply for 1237sanity. David Box. ACPICA BZ 1039. 1238 1239AcpiRead: On error, do not modify the return value target location. If an 1240error happens in the middle of a split 32/32 64-bit I/O operation, do not 1241modify the target of the return value pointer. Makes the code consistent 1242with the rest of ACPICA. Bjorn Helgaas. 1243 1244Example Code and Data Size: These are the sizes for the OS-independent 1245acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1246debug version of the code includes the debug output trace mechanism and 1247has a much larger code and data size. 1248 1249 Current Release: 1250 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 1251 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 1252 Previous Release: 1253 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 1254 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total 1255 1256 12572) iASL Compiler/Disassembler and Tools: 1258 1259AcpiDump: Implemented several new features and fixed some problems: 12601) Added support to dump the RSDP, RSDT, and XSDT tables. 12612) Added support for multiple table instances (SSDT, UEFI). 12623) Added option to dump "customized" (overridden) tables (-c). 12634) Fixed a problem where some table filenames were improperly 1264constructed. 12655) Improved some error messages, removed some unnecessary messages. 1266 1267iASL: Implemented additional support for disassembly of ACPI tables that 1268contain invocations of external control methods. The -fe<file> option 1269allows the import of a file that specifies the external methods along 1270with the required number of arguments for each -- allowing for the 1271correct disassembly of the table. This is a workaround for a limitation 1272of AML code where the disassembler often cannot determine the number of 1273arguments required for an external control method and generates incorrect 1274ASL code. See the iASL reference for details. ACPICA BZ 1030. 1275 1276Debugger: Implemented a new command (paths) that displays the full 1277pathnames (namepaths) and object types of all objects in the namespace. 1278This is an alternative to the namespace command. 1279 1280Debugger: Implemented a new command (sci) that invokes the SCI dispatch 1281mechanism and any installed handlers. 1282 1283iASL: Fixed a possible segfault for "too many parent prefixes" condition. 1284This can occur if there are too many parent prefixes in a namepath (for 1285example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035. 1286 1287Application OSLs: Set the return value for the PCI read functions. These 1288functions simply return AE_OK, but should set the return value to zero 1289also. This change implements this. ACPICA BZ 1038. 1290 1291Debugger: Prevent possible command line buffer overflow. Increase the 1292size of a couple of the debugger line buffers, and ensure that overflow 1293cannot happen. ACPICA BZ 1037. 1294 1295iASL: Changed to abort immediately on serious errors during the parsing 1296phase. Due to the nature of ASL, there is no point in attempting to 1297compile these types of errors, and they typically end up causing a 1298cascade of hundreds of errors which obscure the original problem. 1299 1300---------------------------------------- 130125 July 2013. Summary of changes for version 20130725: 1302 13031) ACPICA kernel-resident subsystem: 1304 1305Fixed a problem with the DerefOf operator where references to FieldUnits 1306and BufferFields incorrectly returned the parent object, not the actual 1307value of the object. After this change, a dereference of a FieldUnit 1308reference results in a read operation on the field to get the value, and 1309likewise, the appropriate BufferField value is extracted from the target 1310buffer. 1311 1312Fixed a problem where the _WAK method could cause a fault under these 1313circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK 1314method returned no value. The problem is rarely seen because most kernels 1315run ACPICA in slack mode. 1316 1317For the DerefOf operator, a fatal error now results if an attempt is made 1318to dereference a reference (created by the Index operator) to a NULL 1319package element. Provides compatibility with other ACPI implementations, 1320and this behavior will be added to a future version of the ACPI 1321specification. 1322 1323The ACPI Power Management Timer (defined in the FADT) is now optional. 1324This provides compatibility with other ACPI implementations and will 1325appear in the next version of the ACPI specification. If there is no PM 1326Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of 1327zero in the FADT indicates no PM timer. 1328 1329Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This 1330allows the host to globally enable/disable all vendor strings, all 1331feature strings, or both. Intended to be primarily used for debugging 1332purposes only. Lv Zheng. 1333 1334Expose the collected _OSI data to the host via a global variable. This 1335data tracks the highest level vendor ID that has been invoked by the BIOS 1336so that the host (and potentially ACPICA itself) can change behaviors 1337based upon the age of the BIOS. 1338 1339Example Code and Data Size: These are the sizes for the OS-independent 1340acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1341debug version of the code includes the debug output trace mechanism and 1342has a much larger code and data size. 1343 1344 Current Release: 1345 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 1346 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 1347 Previous Release: 1348 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 1349 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 1350 1351 13522) iASL Compiler/Disassembler and Tools: 1353 1354iASL: Created the following enhancements for the -so option (create 1355offset table): 13561)Add offsets for the last nameseg in each namepath for every supported 1357object type 13582)Add support for Processor, Device, Thermal Zone, and Scope objects 13593)Add the actual AML opcode for the parent object of every supported 1360object type 13614)Add support for the ZERO/ONE/ONES AML opcodes for integer objects 1362 1363Disassembler: Emit all unresolved external symbols in a single block. 1364These are external references to control methods that could not be 1365resolved, and thus, the disassembler had to make a guess at the number of 1366arguments to parse. 1367 1368iASL: The argument to the -T option (create table template) is now 1369optional. If not specified, the default table is a DSDT, typically the 1370most common case. 1371 1372---------------------------------------- 137326 June 2013. Summary of changes for version 20130626: 1374 13751) ACPICA kernel-resident subsystem: 1376 1377Fixed an issue with runtime repair of the _CST object. Null or invalid 1378elements were not always removed properly. Lv Zheng. 1379 1380Removed an arbitrary restriction of 256 GPEs per GPE block (such as the 1381FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device, 1382the maximum number of GPEs is 1016. Use of multiple GPE block devices 1383makes the system-wide number of GPEs essentially unlimited. 1384 1385Example Code and Data Size: These are the sizes for the OS-independent 1386acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1387debug version of the code includes the debug output trace mechanism and 1388has a much larger code and data size. 1389 1390 Current Release: 1391 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 1392 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 1393 Previous Release: 1394 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 1395 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 1396 1397 13982) iASL Compiler/Disassembler and Tools: 1399 1400Portable AcpiDump: Implemented full support for the Linux and FreeBSD 1401hosts. Now supports Linux, FreeBSD, and Windows. 1402 1403Disassembler: Added some missing types for the HEST and EINJ tables: "Set 1404Error Type With Address", "CMCI", "MCE", and "Flush Cacheline". 1405 1406iASL/Preprocessor: Implemented full support for nested 1407#if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks. 1408 1409Disassembler: Expanded maximum output string length to 64K. Was 256 bytes 1410max. The original purpose of this constraint was to limit the amount of 1411debug output. However, the string function in question (UtPrintString) is 1412now used for the disassembler also, where 256 bytes is insufficient. 1413Reported by RehabMan@GitHub. 1414 1415iASL/DataTables: Fixed some problems and issues with compilation of DMAR 1416tables. ACPICA BZ 999. Lv Zheng. 1417 1418iASL: Fixed a couple of error exit issues that could result in a "Could 1419not delete <file>" message during ASL compilation. 1420 1421AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though 1422the actual signatures for these tables are "FACP" and "APIC", 1423respectively. 1424 1425AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI 1426tables are allowed to have multiple instances. 1427 1428---------------------------------------- 142917 May 2013. Summary of changes for version 20130517: 1430 14311) ACPICA kernel-resident subsystem: 1432 1433Fixed a regression introduced in version 20130328 for _INI methods. This 1434change fixes a problem introduced in 20130328 where _INI methods are no 1435longer executed properly because of a memory block that was not 1436initialized correctly. ACPICA BZ 1016. Tomasz Nowicki 1437<tomasz.nowicki@linaro.org>. 1438 1439Fixed a possible problem with the new extended sleep registers in the 1440ACPI 14415.0 FADT. Do not use these registers (even if populated) unless the HW- 1442reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ 14431020. Lv Zheng. 1444 1445Implemented return value repair code for _CST predefined objects: Sort 1446the 1447list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng. 1448 1449Implemented a debug-only option to disable loading of SSDTs from the 1450RSDT/XSDT during ACPICA initialization. This can be useful for debugging 1451ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in 1452acglobal.h - ACPICA BZ 1005. Lv Zheng. 1453 1454Fixed some issues in the ACPICA initialization and termination code: 1455Tomasz Nowicki <tomasz.nowicki@linaro.org> 14561) Clear events initialized flag upon event component termination. ACPICA 1457BZ 1013. 14582) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018. 14593) Delete global lock pending lock during termination. ACPICA BZ 1012. 14604) Clear debug buffer global on termination to prevent possible multiple 1461delete. ACPICA BZ 1010. 1462 1463Standardized all switch() blocks across the entire source base. After 1464many 1465years, different formatting for switch() had crept in. This change makes 1466the formatting of every switch block identical. ACPICA BZ 997. Chao Guan. 1467 1468Split some files to enhance ACPICA modularity and configurability: 14691) Split buffer dump routines into utilities/utbuffer.c 14702) Split internal error message routines into utilities/uterror.c 14713) Split table print utilities into tables/tbprint.c 14724) Split iASL command-line option processing into asloptions.c 1473 1474Makefile enhancements: 14751) Support for all new files above. 14762) Abort make on errors from any subcomponent. Chao Guan. 14773) Add build support for Apple Mac OS X. Liang Qi. 1478 1479Example Code and Data Size: These are the sizes for the OS-independent 1480acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1481debug version of the code includes the debug output trace mechanism and 1482has a much larger code and data size. 1483 1484 Current Release: 1485 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 1486 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 1487 Previous Release: 1488 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 1489 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 1490 1491 14922) iASL Compiler/Disassembler and Tools: 1493 1494New utility: Implemented an easily portable version of the acpidump 1495utility to extract ACPI tables from the system (or a file) in an ASCII 1496hex 1497dump format. The top-level code implements the various command line 1498options, file I/O, and table dump routines. To port to a new host, only 1499three functions need to be implemented to get tables -- since this 1500functionality is OS-dependent. See the tools/acpidump/apmain.c module and 1501the ACPICA reference for porting instructions. ACPICA BZ 859. Notes: 15021) The Windows version obtains the ACPI tables from the Registry. 15032) The Linux version is under development. 15043) Other hosts - If an OS-dependent module is submitted, it will be 1505distributed with ACPICA. 1506 1507iASL: Fixed a regression for -D preprocessor option (define symbol). A 1508restructuring/change to the initialization sequence caused this option to 1509no longer work properly. 1510 1511iASL: Implemented a mechanism to disable specific warnings and remarks. 1512Adds a new command line option, "-vw <messageid> as well as "#pragma 1513disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore. 1514 1515iASL: Fix for too-strict package object validation. The package object 1516validation for return values from the predefined names is a bit too 1517strict, it does not allow names references within the package (which will 1518be resolved at runtime.) These types of references cannot be validated at 1519compile time. This change ignores named references within package objects 1520for names that return or define static packages. 1521 1522Debugger: Fixed the 80-character command line limitation for the History 1523command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan. 1524 1525iASL: Added control method and package support for the -so option 1526(generates AML offset table for BIOS support.) 1527 1528iASL: issue a remark if a non-serialized method creates named objects. If 1529a thread blocks within the method for any reason, and another thread 1530enters the method, the method will fail because an attempt will be made 1531to 1532create the same (named) object twice. In this case, issue a remark that 1533the method should be marked serialized. NOTE: may become a warning later. 1534ACPICA BZ 909. 1535 1536---------------------------------------- 153718 April 2013. Summary of changes for version 20130418: 1538 15391) ACPICA kernel-resident subsystem: 1540 1541Fixed a possible buffer overrun during some rare but specific field unit 1542read operations. This overrun can only happen if the DSDT version is 1 -- 1543meaning that all AML integers are 32 bits -- and the field length is 1544between 33 and 55 bits long. During the read, an internal buffer object 1545is 1546created for the field unit because the field is larger than an integer 1547(32 1548bits). However, in this case, the buffer will be incorrectly written 1549beyond the end because the buffer length is less than the internal 1550minimum 1551of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes 1552long, but a full 8 bytes will be written. 1553 1554Updated the Embedded Controller "orphan" _REG method support. This refers 1555to _REG methods under the EC device that have no corresponding operation 1556region. This is allowed by the ACPI specification. This update removes a 1557dependency on the existence an ECDT table. It will execute an orphan _REG 1558method as long as the operation region handler for the EC is installed at 1559the EC device node and not the namespace root. Rui Zhang (original 1560update), Bob Moore (update/integrate). 1561 1562Implemented run-time argument typechecking for all predefined ACPI names 1563(_STA, _BIF, etc.) This change performs object typechecking on all 1564incoming arguments for all predefined names executed via 1565AcpiEvaluateObject. This ensures that ACPI-related device drivers are 1566passing correct object types as well as the correct number of arguments 1567(therefore identifying any issues immediately). Also, the ASL/namespace 1568definition of the predefined name is checked against the ACPI 1569specification for the proper argument count. Adds one new file, 1570nsarguments.c 1571 1572Changed an exception code for the ASL UnLoad() operator. Changed the 1573exception code for the case where the input DdbHandle is invalid, from 1574AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE. 1575 1576Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the 1577global makefile. The use of this flag causes compiler errors on earlier 1578versions of GCC, so it has been removed for compatibility. 1579 1580Miscellaneous cleanup: 15811) Removed some unused/obsolete macros 15822) Fixed a possible memory leak in the _OSI support 15833) Removed an unused variable in the predefined name support 15844) Windows OSL: remove obsolete reference to a memory list field 1585 1586Example Code and Data Size: These are the sizes for the OS-independent 1587acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1588debug version of the code includes the debug output trace mechanism and 1589has a much larger code and data size. 1590 1591 Current Release: 1592 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 1593 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 1594 Previous Release: 1595 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 1596 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 1597 1598 15992) iASL Compiler/Disassembler and Tools: 1600 1601AcpiExec: Added installation of a handler for the SystemCMOS address 1602space. This prevents control method abort if a method accesses this 1603space. 1604 1605AcpiExec: Added support for multiple EC devices, and now install EC 1606operation region handler(s) at the actual EC device instead of the 1607namespace root. This reflects the typical behavior of host operating 1608systems. 1609 1610AcpiExec: Updated to ensure that all operation region handlers are 1611installed before the _REG methods are executed. This prevents a _REG 1612method from aborting if it accesses an address space has no handler. 1613AcpiExec installs a handler for every possible address space. 1614 1615Debugger: Enhanced the "handlers" command to display non-root handlers. 1616This change enhances the handlers command to display handlers associated 1617with individual devices throughout the namespace, in addition to the 1618currently supported display of handlers associated with the root 1619namespace 1620node. 1621 1622ASL Test Suite: Several test suite errors have been identified and 1623resolved, reducing the total error count during execution. Chao Guan. 1624 1625---------------------------------------- 162628 March 2013. Summary of changes for version 20130328: 1627 16281) ACPICA kernel-resident subsystem: 1629 1630Fixed several possible race conditions with the internal object reference 1631counting mechanism. Some of the external ACPICA interfaces update object 1632reference counts without holding the interpreter or namespace lock. This 1633change adds a spinlock to protect reference count updates on the internal 1634ACPICA objects. Reported by and with assistance from Andriy Gapon 1635(avg@FreeBSD.org). 1636 1637FADT support: Removed an extraneous warning for very large GPE register 1638sets. This change removes a size mismatch warning if the legacy length 1639field for a GPE register set is larger than the 64-bit GAS structure can 1640accommodate. GPE register sets can be larger than the 255-bit width 1641limitation of the GAS structure. Linn Crosetto (linn@hp.com). 1642 1643_OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error 1644return from this interface. Handles a possible timeout case if 1645ACPI_WAIT_FOREVER is modified by the host to be a value less than 1646"forever". Jung-uk Kim. 1647 1648Predefined name support: Add allowed/required argument type information 1649to 1650the master predefined info table. This change adds the infrastructure to 1651enable typechecking on incoming arguments for all predefined 1652methods/objects. It does not actually contain the code that will fully 1653utilize this information, this is still under development. Also condenses 1654some duplicate code for the predefined names into a new module, 1655utilities/utpredef.c 1656 1657Example Code and Data Size: These are the sizes for the OS-independent 1658acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1659debug version of the code includes the debug output trace mechanism and 1660has a much larger code and data size. 1661 1662 Previous Release: 1663 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 1664 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 1665 Current Release: 1666 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 1667 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 1668 1669 16702) iASL Compiler/Disassembler and Tools: 1671 1672iASL: Implemented a new option to simplify the development of ACPI- 1673related 1674BIOS code. Adds support for a new "offset table" output file. The -so 1675option will create a C table containing the AML table offsets of various 1676named objects in the namespace so that BIOS code can modify them easily 1677at 1678boot time. This can simplify BIOS runtime code by eliminating expensive 1679searches for "magic values", enhancing boot times and adding greater 1680reliability. With assistance from Lee Hamel. 1681 1682iASL: Allow additional predefined names to return zero-length packages. 1683Now, all predefined names that are defined by the ACPI specification to 1684return a "variable-length package of packages" are allowed to return a 1685zero length top-level package. This allows the BIOS to tell the host that 1686the requested feature is not supported, and supports existing BIOS/ASL 1687code and practices. 1688 1689iASL: Changed the "result not used" warning to an error. This is the case 1690where an ASL operator is effectively a NOOP because the result of the 1691operation is not stored anywhere. For example: 1692 Add (4, Local0) 1693There is no target (missing 3rd argument), nor is the function return 1694value used. This is potentially a very serious problem -- since the code 1695was probably intended to do something, but for whatever reason, the value 1696was not stored. Therefore, this issue has been upgraded from a warning to 1697an error. 1698 1699AcpiHelp: Added allowable/required argument types to the predefined names 1700info display. This feature utilizes the recent update to the predefined 1701names table (above). 1702 1703---------------------------------------- 170414 February 2013. Summary of changes for version 20130214: 1705 17061) ACPICA Kernel-resident Subsystem: 1707 1708Fixed a possible regression on some hosts: Reinstated the safe return 1709macros (return_ACPI_STATUS, etc.) that ensure that the argument is 1710evaluated only once. Although these macros are not needed for the ACPICA 1711code itself, they are often used by ACPI-related host device drivers 1712where 1713the safe feature may be necessary. 1714 1715Fixed several issues related to the ACPI 5.0 reduced hardware support 1716(SOC): Now ensure that if the platform declares itself as hardware- 1717reduced 1718via the FADT, the following functions become NOOPs (and always return 1719AE_OK) because ACPI is always enabled by definition on these machines: 1720 AcpiEnable 1721 AcpiDisable 1722 AcpiHwGetMode 1723 AcpiHwSetMode 1724 1725Dynamic Object Repair: Implemented additional runtime repairs for 1726predefined name return values. Both of these repairs can simplify code in 1727the related device drivers that invoke these methods: 17281) For the _STR and _MLS names, automatically repair/convert an ASCII 1729string to a Unicode buffer. 17302) For the _CRS, _PRS, and _DMA names, return a resource descriptor with 1731a 1732lone end tag descriptor in the following cases: A Return(0) was executed, 1733a null buffer was returned, or no object at all was returned (non-slack 1734mode only). Adds a new file, nsconvert.c 1735ACPICA BZ 998. Bob Moore, Lv Zheng. 1736 1737Resource Manager: Added additional code to prevent possible infinite 1738loops 1739while traversing corrupted or ill-formed resource template buffers. Check 1740for zero-length resource descriptors in all code that loops through 1741resource templates (the length field is used to index through the 1742template). This change also hardens the external AcpiWalkResources and 1743AcpiWalkResourceBuffer interfaces. 1744 1745Local Cache Manager: Enhanced the main data structure to eliminate an 1746unnecessary mechanism to access the next object in the list. Actually 1747provides a small performance enhancement for hosts that use the local 1748ACPICA cache manager. Jung-uk Kim. 1749 1750Example Code and Data Size: These are the sizes for the OS-independent 1751acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1752debug version of the code includes the debug output trace mechanism and 1753has a much larger code and data size. 1754 1755 Previous Release: 1756 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 1757 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 1758 Current Release: 1759 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 1760 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 1761 1762 17632) iASL Compiler/Disassembler and Tools: 1764 1765iASL/Disassembler: Fixed several issues with the definition of the ACPI 17665.0 RASF table (RAS Feature Table). This change incorporates late changes 1767that were made to the ACPI 5.0 specification. 1768 1769iASL/Disassembler: Added full support for the following new ACPI tables: 1770 1) The MTMR table (MID Timer Table) 1771 2) The VRTC table (Virtual Real Time Clock Table). 1772Includes header file, disassembler, table compiler, and template support 1773for both tables. 1774 1775iASL: Implemented compile-time validation of package objects returned by 1776predefined names. This new feature validates static package objects 1777returned by the various predefined names defined to return packages. Both 1778object types and package lengths are validated, for both parent packages 1779and sub-packages, if any. The code is similar in structure and behavior 1780to 1781the runtime repair mechanism within the AML interpreter and uses the 1782existing predefined name information table. Adds a new file, aslprepkg.c. 1783ACPICA BZ 938. 1784 1785iASL: Implemented auto-detection of binary ACPI tables for disassembly. 1786This feature detects a binary file with a valid ACPI table header and 1787invokes the disassembler automatically. Eliminates the need to 1788specifically invoke the disassembler with the -d option. ACPICA BZ 862. 1789 1790iASL/Disassembler: Added several warnings for the case where there are 1791unresolved control methods during the disassembly. This can potentially 1792cause errors when the output file is compiled, because the disassembler 1793assumes zero method arguments in these cases (it cannot determine the 1794actual number of arguments without resolution/definition of the method). 1795 1796Debugger: Added support to display all resources with a single command. 1797Invocation of the resources command with no arguments will now display 1798all 1799resources within the current namespace. 1800 1801AcpiHelp: Added descriptive text for each ACPICA exception code displayed 1802via the -e option. 1803 1804---------------------------------------- 180517 January 2013. Summary of changes for version 20130117: 1806 18071) ACPICA Kernel-resident Subsystem: 1808 1809Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to 1810return either 1 or 2 integers. Although the ACPI spec defines the \_Sx 1811objects to return a package containing one integer, most BIOS code 1812returns 1813two integers and the previous code reflects that. However, we also need 1814to 1815support BIOS code that actually implements to the ACPI spec, and this 1816change reflects this. 1817 1818Fixed two issues with the ACPI_DEBUG_PRINT macros: 18191) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for 1820C compilers that require this support. 18212) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since 1822ACPI_DEBUG is already used by many of the various hosts. 1823 1824Updated all ACPICA copyrights and signons to 2013. Added the 2013 1825copyright to all module headers and signons, including the standard Linux 1826header. This affects virtually every file in the ACPICA core subsystem, 1827iASL compiler, all ACPICA utilities, and the test suites. 1828 1829Example Code and Data Size: These are the sizes for the OS-independent 1830acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1831debug version of the code includes the debug output trace mechanism and 1832has a much larger code and data size. 1833 1834 Previous Release: 1835 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 1836 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 1837 Current Release: 1838 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 1839 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 1840 1841 18422) iASL Compiler/Disassembler and Tools: 1843 1844Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and 1845prevent a possible fault on some hosts. Some C libraries modify the arg 1846pointer parameter to vfprintf making it difficult to call it twice in the 1847AcpiOsVprintf function. Use a local buffer to workaround this issue. This 1848does not affect the Windows OSL since the Win C library does not modify 1849the arg pointer. Chao Guan, Bob Moore. 1850 1851iASL: Fixed a possible infinite loop when the maximum error count is 1852reached. If an output file other than the .AML file is specified (such as 1853a listing file), and the maximum number of errors is reached, do not 1854attempt to flush data to the output file(s) as the compiler is aborting. 1855This can cause an infinite loop as the max error count code essentially 1856keeps calling itself. 1857 1858iASL/Disassembler: Added an option (-in) to ignore NOOP 1859opcodes/operators. 1860Implemented for both the compiler and the disassembler. Often, the NOOP 1861opcode is used as padding for packages that are changed dynamically by 1862the 1863BIOS. When disassembled and recompiled, these NOOPs will cause syntax 1864errors. This option causes the disassembler to ignore all NOOP opcodes 1865(0xA3), and it also causes the compiler to ignore all ASL source code 1866NOOP 1867statements as well. 1868 1869Debugger: Enhanced the Sleep command to execute all sleep states. This 1870change allows Sleep to be invoked with no arguments and causes the 1871debugger to execute all of the sleep states, 0-5, automatically. 1872 1873---------------------------------------- 187420 December 2012. Summary of changes for version 20121220: 1875 18761) ACPICA Kernel-resident Subsystem: 1877 1878Implemented a new interface, AcpiWalkResourceBuffer. This interface is an 1879alternate entry point for AcpiWalkResources and improves the usability of 1880the resource manager by accepting as input a buffer containing the output 1881of either a _CRS, _PRS, or _AEI method. The key functionality is that the 1882input buffer is not deleted by this interface so that it can be used by 1883the host later. See the ACPICA reference for details. 1884 1885Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table 1886(DSDT version < 2). The constant will be truncated and this warning 1887reflects that behavior. 1888 1889Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ, 1890ExtendedInterrupt, and GpioInt descriptors. This change adds support to 1891both get and set the new wake bit in these descriptors, separately from 1892the existing share bit. Reported by Aaron Lu. 1893 1894Interpreter: Fix Store() when an implicit conversion is not possible. For 1895example, in the cases such as a store of a string to an existing package 1896object, implement the store as a CopyObject(). This is a small departure 1897from the ACPI specification which states that the control method should 1898be 1899aborted in this case. However, the ASLTS suite depends on this behavior. 1900 1901Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT 1902macros: check if debug output is currently enabled as soon as possible to 1903minimize performance impact if debug is in fact not enabled. 1904 1905Source code restructuring: Cleanup to improve modularity. The following 1906new files have been added: dbconvert.c, evhandler.c, nsprepkg.c, 1907psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c. 1908Associated makefiles and project files have been updated. 1909 1910Changed an exception code for LoadTable operator. For the case where one 1911of the input strings is too long, change the returned exception code from 1912AE_BAD_PARAMETER to AE_AML_STRING_LIMIT. 1913 1914Fixed a possible memory leak in dispatcher error path. On error, delete 1915the mutex object created during method mutex creation. Reported by 1916tim.gardner@canonical.com. 1917 1918Example Code and Data Size: These are the sizes for the OS-independent 1919acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1920debug version of the code includes the debug output trace mechanism and 1921has a much larger code and data size. 1922 1923 Previous Release: 1924 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 1925 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 1926 Current Release: 1927 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 1928 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 1929 1930 19312) iASL Compiler/Disassembler and Tools: 1932 1933iASL: Disallow a method call as argument to the ObjectType ASL operator. 1934This change tracks an errata to the ACPI 5.0 document. The AML grammar 1935will not allow the interpreter to differentiate between a method and a 1936method invocation when these are used as an argument to the ObjectType 1937operator. The ACPI specification change is to disallow a method 1938invocation 1939(UserTerm) for the ObjectType operator. 1940 1941Finish support for the TPM2 and CSRT tables in the headers, table 1942compiler, and disassembler. 1943 1944Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout 1945always expires immediately if the semaphore is not available. The 1946original 1947code was using a relative-time timeout, but sem_timedwait requires the 1948use 1949of an absolute time. 1950 1951iASL: Added a remark if the Timer() operator is used within a 32-bit 1952table. This operator returns a 64-bit time value that will be truncated 1953within a 32-bit table. 1954 1955iASL Source code restructuring: Cleanup to improve modularity. The 1956following new files have been added: aslhex.c, aslxref.c, aslnamesp.c, 1957aslmethod.c, and aslfileio.c. Associated makefiles and project files have 1958been updated. 1959 1960 1961---------------------------------------- 196214 November 2012. Summary of changes for version 20121114: 1963 19641) ACPICA Kernel-resident Subsystem: 1965 1966Implemented a performance enhancement for ACPI/AML Package objects. This 1967change greatly increases the performance of Package objects within the 1968interpreter. It changes the processing of reference counts for packages 1969by 1970optimizing for the most common case where the package sub-objects are 1971either Integers, Strings, or Buffers. Increases the overall performance 1972of 1973the ASLTS test suite by 1.5X (Increases the Slack Mode performance by 19742X.) 1975Chao Guan. ACPICA BZ 943. 1976 1977Implemented and deployed common macros to extract flag bits from resource 1978descriptors. Improves readability and maintainability of the code. Fixes 1979a 1980problem with the UART serial bus descriptor for the number of data bits 1981flags (was incorrectly 2 bits, should be 3). 1982 1983Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation 1984of the macros and changed the SETx macros to the style of (destination, 1985source). Also added ACPI_CASTx companion macros. Lv Zheng. 1986 1987Example Code and Data Size: These are the sizes for the OS-independent 1988acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1989debug version of the code includes the debug output trace mechanism and 1990has a much larger code and data size. 1991 1992 Previous Release: 1993 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 1994 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 1995 Current Release: 1996 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 1997 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 1998 1999 20002) iASL Compiler/Disassembler and Tools: 2001 2002Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change 2003adds the ShareAndWake and ExclusiveAndWake flags which were added to the 2004Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986. 2005 2006Disassembler: Fixed a problem with external declaration generation. Fixes 2007a problem where an incorrect pathname could be generated for an external 2008declaration if the original reference to the object includes leading 2009carats (^). ACPICA BZ 984. 2010 2011Debugger: Completed a major update for the Disassemble<method> command. 2012This command was out-of-date and did not properly disassemble control 2013methods that had any reasonable complexity. This fix brings the command 2014up 2015to the same level as the rest of the disassembler. Adds one new file, 2016dmdeferred.c, which is existing code that is now common with the main 2017disassembler and the debugger disassemble command. ACPICA MZ 978. 2018 2019iASL: Moved the parser entry prototype to avoid a duplicate declaration. 2020Newer versions of Bison emit this prototype, so moved the prototype out 2021of 2022the iASL header to where it is actually used in order to avoid a 2023duplicate 2024declaration. 2025 2026iASL/Tools: Standardized use of the stream I/O functions: 2027 1) Ensure check for I/O error after every fopen/fread/fwrite 2028 2) Ensure proper order of size/count arguments for fread/fwrite 2029 3) Use test of (Actual != Requested) after all fwrite, and most fread 2030 4) Standardize I/O error messages 2031Improves reliability and maintainability of the code. Bob Moore, Lv 2032Zheng. 2033ACPICA BZ 981. 2034 2035Disassembler: Prevent duplicate External() statements. During generation 2036of external statements, detect similar pathnames that are actually 2037duplicates such as these: 2038 External (\ABCD) 2039 External (ABCD) 2040Remove all leading '\' characters from pathnames during the external 2041statement generation so that duplicates will be detected and tossed. 2042ACPICA BZ 985. 2043 2044Tools: Replace low-level I/O with stream I/O functions. Replace 2045open/read/write/close with the stream I/O equivalents 2046fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob 2047Moore. 2048 2049AcpiBin: Fix for the dump-to-hex function. Now correctly output the table 2050name header so that AcpiXtract recognizes the output file/table. 2051 2052iASL: Remove obsolete -2 option flag. Originally intended to force the 2053compiler/disassembler into an ACPI 2.0 mode, this was never implemented 2054and the entire concept is now obsolete. 2055 2056---------------------------------------- 205718 October 2012. Summary of changes for version 20121018: 2058 2059 20601) ACPICA Kernel-resident Subsystem: 2061 2062Updated support for the ACPI 5.0 MPST table. Fixes some problems 2063introduced by late changes to the table as it was added to the ACPI 5.0 2064specification. Includes header, disassembler, and data table compiler 2065support as well as a new version of the MPST template. 2066 2067AcpiGetObjectInfo: Enhanced the device object support to include the ACPI 20685.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID 2069methods: _HID, _CID, and _UID. 2070 2071Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed 2072ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent 2073name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId) 2074names for their various drivers. Affects the AcpiGetObjectInfo external 2075interface, and other internal interfaces as well. 2076 2077Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME. 2078This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME 2079on machines that support non-aligned transfers. Optimizes for this case 2080rather than using a strncpy. With assistance from Zheng Lv. 2081 2082Resource Manager: Small fix for buffer size calculation. Fixed a one byte 2083error in the output buffer calculation. Feng Tang. ACPICA BZ 849. 2084 2085Added a new debug print message for AML mutex objects that are force- 2086released. At control method termination, any currently acquired mutex 2087objects are force-released. Adds a new debug-only message for each one 2088that is released. 2089 2090Audited/updated all ACPICA return macros and the function debug depth 2091counter: 1) Ensure that all functions that use the various TRACE macros 2092also use the appropriate ACPICA return macros. 2) Ensure that all normal 2093return statements surround the return expression (value) with parens to 2094ensure consistency across the ACPICA code base. Guan Chao, Tang Feng, 2095Zheng Lv, Bob Moore. ACPICA Bugzilla 972. 2096 2097Global source code changes/maintenance: All extra lines at the start and 2098end of each source file have been removed for consistency. Also, within 2099comments, all new sentences start with a single space instead of a double 2100space, again for consistency across the code base. 2101 2102Example Code and Data Size: These are the sizes for the OS-independent 2103acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2104debug version of the code includes the debug output trace mechanism and 2105has a much larger code and data size. 2106 2107 Previous Release: 2108 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 2109 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 2110 Current Release: 2111 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 2112 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2113 2114 21152) iASL Compiler/Disassembler and Tools: 2116 2117AcpiExec: Improved the algorithm used for memory leak/corruption 2118detection. Added some intelligence to the code that maintains the global 2119list of allocated memory. The list is now ordered by allocated memory 2120address, significantly improving performance. When running AcpiExec on 2121the ASLTS test suite, speed improvements of 3X to 5X are seen, depending 2122on the platform and/or the environment. Note, this performance 2123enhancement affects the AcpiExec utility only, not the kernel-resident 2124ACPICA code. 2125 2126Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For 2127the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix 2128incorrect table offset reported for invalid opcodes. Report the original 212932-bit value for bad ACPI_NAMEs (as well as the repaired name.) 2130 2131Disassembler: Enhanced the -vt option to emit the binary table data in 2132hex format to assist with debugging. 2133 2134Fixed a potential filename buffer overflow in osunixdir.c. Increased the 2135size of file structure. Colin Ian King. 2136 2137---------------------------------------- 213813 September 2012. Summary of changes for version 20120913: 2139 2140 21411) ACPICA Kernel-resident Subsystem: 2142 2143ACPI 5.0: Added two new notify types for the Hardware Error Notification 2144Structure within the Hardware Error Source Table (HEST) table -- CMCI(5) 2145and 2146MCE(6). 2147 2148Table Manager: Merged/removed duplicate code in the root table resize 2149functions. One function is external, the other is internal. Lv Zheng, 2150ACPICA 2151BZ 846. 2152 2153Makefiles: Completely removed the obsolete "Linux" makefiles under 2154acpica/generate/linux. These makefiles are obsolete and have been 2155replaced 2156by 2157the generic unix makefiles under acpica/generate/unix. 2158 2159Makefiles: Ensure that binary files always copied properly. Minor rule 2160change 2161to ensure that the final binary output files are always copied up to the 2162appropriate binary directory (bin32 or bin64.) 2163 2164Example Code and Data Size: These are the sizes for the OS-independent 2165acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2166debug 2167version of the code includes the debug output trace mechanism and has a 2168much 2169larger code and data size. 2170 2171 Previous Release: 2172 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 2173 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 2174 Current Release: 2175 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 2176 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 2177 2178 21792) iASL Compiler/Disassembler and Tools: 2180 2181Disassembler: Fixed a possible fault during the disassembly of resource 2182descriptors when a second parse is required because of the invocation of 2183external control methods within the table. With assistance from 2184adq@lidskialf.net. ACPICA BZ 976. 2185 2186iASL: Fixed a namepath optimization problem. An error can occur if the 2187parse 2188node that contains the namepath to be optimized does not have a parent 2189node 2190that is a named object. This change fixes the problem. 2191 2192iASL: Fixed a regression where the AML file is not deleted on errors. The 2193AML 2194output file should be deleted if there are any errors during the 2195compiler. 2196The 2197only exception is if the -f (force output) option is used. ACPICA BZ 974. 2198 2199iASL: Added a feature to automatically increase internal line buffer 2200sizes. 2201Via realloc(), automatically increase the internal line buffer sizes as 2202necessary to support very long source code lines. The current version of 2203the 2204preprocessor requires a buffer long enough to contain full source code 2205lines. 2206This change increases the line buffer(s) if the input lines go beyond the 2207current buffer size. This eliminates errors that occurred when a source 2208code 2209line was longer than the buffer. 2210 2211iASL: Fixed a problem with constant folding in method declarations. The 2212SyncLevel term is a ByteConstExpr, and incorrect code would be generated 2213if a 2214Type3 opcode was used. 2215 2216Debugger: Improved command help support. For incorrect argument count, 2217display 2218full help for the command. For help command itself, allow an argument to 2219specify a command. 2220 2221Test Suites: Several bug fixes for the ASLTS suite reduces the number of 2222errors during execution of the suite. Guan Chao. 2223 2224---------------------------------------- 222516 August 2012. Summary of changes for version 20120816: 2226 2227 22281) ACPICA Kernel-resident Subsystem: 2229 2230Removed all use of the deprecated _GTS and _BFS predefined methods. The 2231_GTS 2232(Going To Sleep) and _BFS (Back From Sleep) methods are essentially 2233deprecated and will probably be removed from the ACPI specification. 2234Windows 2235does not invoke them, and reportedly never will. The final nail in the 2236coffin 2237is that the ACPI specification states that these methods must be run with 2238interrupts off, which is not going to happen in a kernel interpreter. 2239Note: 2240Linux has removed all use of the methods also. It was discovered that 2241invoking these functions caused failures on some machines, probably 2242because 2243they were never tested since Windows does not call them. Affects two 2244external 2245interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng. 2246ACPICA BZ 969. 2247 2248Implemented support for complex bit-packed buffers returned from the _PLD 2249(Physical Location of Device) predefined method. Adds a new external 2250interface, AcpiDecodePldBuffer that parses the buffer into a more usable 2251C 2252structure. Note: C Bitfields cannot be used for this type of predefined 2253structure since the memory layout of individual bitfields is not defined 2254by 2255the C language. In addition, there are endian concerns where a compiler 2256will 2257change the bitfield ordering based on the machine type. The new ACPICA 2258interface eliminates these issues, and should be called after _PLD is 2259executed. ACPICA BZ 954. 2260 2261Implemented a change to allow a scope change to root (via "Scope (\)") 2262during 2263execution of module-level ASL code (code that is executed at table load 2264time.) Lin Ming. 2265 2266Added the Windows8/Server2012 string for the _OSI method. This change 2267adds 2268a 2269new _OSI string, "Windows 2012" for both Windows 8 and Windows Server 22702012. 2271 2272Added header support for the new ACPI tables DBG2 (Debug Port Table Type 22732) 2274and CSRT (Core System Resource Table). 2275 2276Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined 2277names. This simplifies access to the buffers returned by these predefined 2278names. Adds a new file, include/acbuffer.h. ACPICA BZ 956. 2279 2280GPE support: Removed an extraneous parameter from the various low-level 2281internal GPE functions. Tang Feng. 2282 2283Removed the linux makefiles from the unix packages. The generate/linux 2284makefiles are obsolete and have been removed from the unix tarball 2285release 2286packages. The replacement makefiles are under generate/unix, and there is 2287a 2288top-level makefile under the main acpica directory. ACPICA BZ 967, 912. 2289 2290Updates for Unix makefiles: 22911) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven. 22922) Update linker flags (move to end of command line) for AcpiExec 2293utility. 2294Guan Chao. 2295 2296Split ACPICA initialization functions to new file, utxfinit.c. Split from 2297utxface.c to improve modularity and reduce file size. 2298 2299Example Code and Data Size: These are the sizes for the OS-independent 2300acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2301debug version of the code includes the debug output trace mechanism and 2302has a 2303much larger code and data size. 2304 2305 Previous Release: 2306 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 2307 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 2308 Current Release: 2309 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 2310 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 2311 2312 23132) iASL Compiler/Disassembler and Tools: 2314 2315iASL: Fixed a problem with constant folding for fixed-length constant 2316expressions. The constant-folding code was not being invoked for constant 2317expressions that allow the use of type 3/4/5 opcodes to generate 2318constants 2319for expressions such as ByteConstExpr, WordConstExpr, etc. This could 2320result 2321in the generation of invalid AML bytecode. ACPICA BZ 970. 2322 2323iASL: Fixed a generation issue on newer versions of Bison. Newer versions 2324apparently automatically emit some of the necessary externals. This 2325change 2326handles these versions in order to eliminate generation warnings. 2327 2328Disassembler: Added support to decode the DBG2 and CSRT ACPI tables. 2329 2330Disassembler: Add support to decode _PLD buffers. The decoded buffer 2331appears 2332within comments in the output file. 2333 2334Debugger: Fixed a regression with the "Threads" command where 2335AE_BAD_PARAMETER was always returned. 2336 2337---------------------------------------- 233811 July 2012. Summary of changes for version 20120711: 2339 23401) ACPICA Kernel-resident Subsystem: 2341 2342Fixed a possible fault in the return package object repair code. Fixes a 2343problem that can occur when a lone package object is wrapped with an 2344outer 2345package object in order to force conformance to the ACPI specification. 2346Can 2347affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, 2348_DLM, 2349_CSD, _PSD, _TSD. 2350 2351Removed code to disable/enable bus master arbitration (ARB_DIS bit in the 2352PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the 2353ARB_DIS bit must be implemented in the host-dependent C3 processor power 2354state 2355support. Note, ARB_DIS is obsolete and only applies to older chipsets, 2356both 2357Intel and other vendors. (for Intel: ICH4-M and earlier) 2358 2359This change removes the code to disable/enable bus master arbitration 2360during 2361suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register 2362causes 2363resume problems on some machines. The change has been in use for over 2364seven 2365years within Linux. 2366 2367Implemented two new external interfaces to support host-directed dynamic 2368ACPI 2369table load and unload. They are intended to simplify the host 2370implementation 2371of hot-plug support: 2372 AcpiLoadTable: Load an SSDT from a buffer into the namespace. 2373 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the 2374table. 2375See the ACPICA reference for additional details. Adds one new file, 2376components/tables/tbxfload.c 2377 2378Implemented and deployed two new interfaces for errors and warnings that 2379are 2380known to be caused by BIOS/firmware issues: 2381 AcpiBiosError: Prints "ACPI Firmware Error" message. 2382 AcpiBiosWarning: Prints "ACPI Firmware Warning" message. 2383Deployed these new interfaces in the ACPICA Table Manager code for ACPI 2384table 2385and FADT errors. Additional deployment to be completed as appropriate in 2386the 2387future. The associated conditional macros are ACPI_BIOS_ERROR and 2388ACPI_BIOS_WARNING. See the ACPICA reference for additional details. 2389ACPICA 2390BZ 2391843. 2392 2393Implicit notify support: ensure that no memory allocation occurs within a 2394critical region. This fix moves a memory allocation outside of the time 2395that a 2396spinlock is held. Fixes issues on systems that do not allow this 2397behavior. 2398Jung-uk Kim. 2399 2400Split exception code utilities and tables into a new file, 2401utilities/utexcep.c 2402 2403Example Code and Data Size: These are the sizes for the OS-independent 2404acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2405debug 2406version of the code includes the debug output trace mechanism and has a 2407much 2408larger code and data size. 2409 2410 Previous Release: 2411 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 2412 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 2413 Current Release: 2414 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 2415 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 2416 2417 24182) iASL Compiler/Disassembler and Tools: 2419 2420iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead 2421of 24220. Jung-uk Kim. 2423 2424Debugger: Enhanced the "tables" command to emit additional information 2425about 2426the current set of ACPI tables, including the owner ID and flags decode. 2427 2428Debugger: Reimplemented the "unload" command to use the new 2429AcpiUnloadParentTable external interface. This command was disable 2430previously 2431due to need for an unload interface. 2432 2433AcpiHelp: Added a new option to decode ACPICA exception codes. The -e 2434option 2435will decode 16-bit hex status codes (ACPI_STATUS) to name strings. 2436 2437---------------------------------------- 243820 June 2012. Summary of changes for version 20120620: 2439 2440 24411) ACPICA Kernel-resident Subsystem: 2442 2443Implemented support to expand the "implicit notify" feature to allow 2444multiple 2445devices to be notified by a single GPE. This feature automatically 2446generates a 2447runtime device notification in the absence of a BIOS-provided GPE control 2448method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit 2449notify is 2450provided by ACPICA for Windows compatibility, and is a workaround for 2451BIOS 2452AML 2453code errors. See the description of the AcpiSetupGpeForWake interface in 2454the 2455APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 2456 2457Changed some comments and internal function names to simplify and ensure 2458correctness of the Linux code translation. No functional changes. 2459 2460Example Code and Data Size: These are the sizes for the OS-independent 2461acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2462debug 2463version of the code includes the debug output trace mechanism and has a 2464much 2465larger code and data size. 2466 2467 Previous Release: 2468 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 2469 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 2470 Current Release: 2471 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 2472 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 2473 2474 24752) iASL Compiler/Disassembler and Tools: 2476 2477Disassembler: Added support to emit short, commented descriptions for the 2478ACPI 2479predefined names in order to improve the readability of the disassembled 2480output. ACPICA BZ 959. Changes include: 2481 1) Emit descriptions for all standard predefined names (_INI, _STA, 2482_PRW, 2483etc.) 2484 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 2485 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, 2486etc.) 2487 2488AcpiSrc: Fixed several long-standing Linux code translation issues. 2489Argument 2490descriptions in function headers are now translated properly to lower 2491case 2492and 2493underscores. ACPICA BZ 961. Also fixes translation problems such as 2494these: 2495(old -> new) 2496 i_aSL -> iASL 2497 00-7_f -> 00-7F 2498 16_k -> 16K 2499 local_fADT -> local_FADT 2500 execute_oSI -> execute_OSI 2501 2502iASL: Fixed a problem where null bytes were inadvertently emitted into 2503some 2504listing files. 2505 2506iASL: Added the existing debug options to the standard help screen. There 2507are 2508no longer two different help screens. ACPICA BZ 957. 2509 2510AcpiHelp: Fixed some typos in the various predefined name descriptions. 2511Also 2512expand some of the descriptions where appropriate. 2513 2514iASL: Fixed the -ot option (display compile times/statistics). Was not 2515working 2516properly for standard output; only worked for the debug file case. 2517 2518---------------------------------------- 251918 May 2012. Summary of changes for version 20120518: 2520 2521 25221) ACPICA Core Subsystem: 2523 2524Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is 2525defined 2526to block until asynchronous events such as notifies and GPEs have 2527completed. 2528Within ACPICA, it is only called before a notify or GPE handler is 2529removed/uninstalled. It also may be useful for the host OS within related 2530drivers such as the Embedded Controller driver. See the ACPICA reference 2531for 2532additional information. ACPICA BZ 868. 2533 2534ACPI Tables: Added a new error message for a possible overflow failure 2535during 2536the conversion of FADT 32-bit legacy register addresses to internal 2537common 253864- 2539bit GAS structure representation. The GAS has a one-byte "bit length" 2540field, 2541thus limiting the register length to 255 bits. ACPICA BZ 953. 2542 2543Example Code and Data Size: These are the sizes for the OS-independent 2544acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2545debug 2546version of the code includes the debug output trace mechanism and has a 2547much 2548larger code and data size. 2549 2550 Previous Release: 2551 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 2552 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 2553 Current Release: 2554 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 2555 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 2556 2557 25582) iASL Compiler/Disassembler and Tools: 2559 2560iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL 2561macro. 2562This keyword was added late in the ACPI 5.0 release cycle and was not 2563implemented until now. 2564 2565Disassembler: Added support for Operation Region externals. Adds missing 2566support for operation regions that are defined in another table, and 2567referenced locally via a Field or BankField ASL operator. Now generates 2568the 2569correct External statement. 2570 2571Disassembler: Several additional fixes for the External() statement 2572generation 2573related to some ASL operators. Also, order the External() statements 2574alphabetically in the disassembler output. Fixes the External() 2575generation 2576for 2577the Create* field, Alias, and Scope operators: 2578 1) Create* buffer field operators - fix type mismatch warning on 2579disassembly 2580 2) Alias - implement missing External support 2581 3) Scope - fix to make sure all necessary externals are emitted. 2582 2583iASL: Improved pathname support. For include files, merge the prefix 2584pathname 2585with the file pathname and eliminate unnecessary components. Convert 2586backslashes in all pathnames to forward slashes, for readability. Include 2587file 2588pathname changes affect both #include and Include() type operators. 2589 2590iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the 2591end 2592of a valid line by inserting a newline and then returning the EOF during 2593the 2594next call to GetNextLine. Prevents the line from being ignored due to EOF 2595condition. 2596 2597iASL: Implemented some changes to enhance the IDE support (-vi option.) 2598Error 2599and Warning messages are now correctly recognized for both the source 2600code 2601browser and the global error and warning counts. 2602 2603---------------------------------------- 260420 April 2012. Summary of changes for version 20120420: 2605 2606 26071) ACPICA Core Subsystem: 2608 2609Implemented support for multiple notify handlers. This change adds 2610support 2611to 2612allow multiple system and device notify handlers on Device, Thermal Zone, 2613and 2614Processor objects. This can simplify the host OS notification 2615implementation. 2616Also re-worked and restructured the entire notify support code to 2617simplify 2618handler installation, handler removal, notify event queuing, and notify 2619dispatch to handler(s). Note: there can still only be two global notify 2620handlers - one for system notifies and one for device notifies. There are 2621no 2622changes to the existing handler install/remove interfaces. Lin Ming, Bob 2623Moore, Rafael Wysocki. 2624 2625Fixed a regression in the package repair code where the object reference 2626count was calculated incorrectly. Regression was introduced in the commit 2627"Support to add Package wrappers". 2628 2629Fixed a couple possible memory leaks in the AML parser, in the error 2630recovery 2631path. Jesper Juhl, Lin Ming. 2632 2633Example Code and Data Size: These are the sizes for the OS-independent 2634acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2635debug version of the code includes the debug output trace mechanism and 2636has a 2637much larger code and data size. 2638 2639 Previous Release: 2640 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 2641 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 2642 Current Release: 2643 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 2644 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 2645 2646 26472) iASL Compiler/Disassembler and Tools: 2648 2649iASL: Fixed a problem with the resource descriptor support where the 2650length 2651of the StartDependentFn and StartDependentFnNoPrio descriptors were not 2652included in cumulative descriptor offset, resulting in incorrect values 2653for 2654resource tags within resource descriptors appearing after a 2655StartDependent* 2656descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 2657 2658iASL and Preprocessor: Implemented full support for the #line directive 2659to 2660correctly track original source file line numbers through the .i 2661preprocessor 2662output file - for error and warning messages. 2663 2664iASL: Expand the allowable byte constants for address space IDs. 2665Previously, 2666the allowable range was 0x80-0xFF (user-defined spaces), now the range is 26670x0A-0xFF to allow for custom and new IDs without changing the compiler. 2668 2669iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 2670 2671iASL: Add option to completely disable the preprocessor (-Pn). 2672 2673iASL: Now emit all error/warning messages to standard error (stderr) by 2674default (instead of the previous stdout). 2675 2676ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). 2677Update 2678for resource descriptor offset fix above. Update/cleanup error output 2679routines. Enable and send iASL errors/warnings to an error logfile 2680(error.txt). Send all other iASL output to a logfile (compiler.txt). 2681Fixed 2682several extraneous "unrecognized operator" messages. 2683 2684---------------------------------------- 268520 March 2012. Summary of changes for version 20120320: 2686 2687 26881) ACPICA Core Subsystem: 2689 2690Enhanced the sleep/wake interfaces to optionally execute the _GTS method 2691(Going To Sleep) and the _BFS method (Back From Sleep). Windows 2692apparently 2693does not execute these methods, and therefore these methods are often 2694untested. It has been seen on some systems where the execution of these 2695methods causes errors and also prevents the machine from entering S5. It 2696is 2697therefore suggested that host operating systems do not execute these 2698methods 2699by default. In the future, perhaps these methods can be optionally 2700executed 2701based on the age of the system and/or what is the newest version of 2702Windows 2703that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState 2704and 2705AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 2706Ming. 2707 2708Fixed a problem where the length of the local/common FADT was set too 2709early. 2710The local FADT table length cannot be set to the common length until the 2711original length has been examined. There is code that checks the table 2712length 2713and sets various fields appropriately. This can affect older machines 2714with 2715early FADT versions. For example, this can cause inadvertent writes to 2716the 2717CST_CNT register. Julian Anastasov. 2718 2719Fixed a mapping issue related to a physical table override. Use the 2720deferred 2721mapping mechanism for tables loaded via the physical override OSL 2722interface. 2723This allows for early mapping before the virtual memory manager is 2724available. 2725Thomas Renninger, Bob Moore. 2726 2727Enhanced the automatic return-object repair code: Repair a common problem 2728with 2729predefined methods that are defined to return a variable-length Package 2730of 2731sub-objects. If there is only one sub-object, some BIOS ASL code 2732mistakenly 2733simply returns the single object instead of a Package with one sub- 2734object. 2735This new support will repair this error by wrapping a Package object 2736around 2737the original object, creating the correct and expected Package with one 2738sub- 2739object. Names that can be repaired in this manner include: _ALR, _CSD, 2740_HPX, 2741_MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 2742939. 2743 2744Changed the exception code returned for invalid ACPI paths passed as 2745parameters to external interfaces such as AcpiEvaluateObject. Was 2746AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 2747 2748Example Code and Data Size: These are the sizes for the OS-independent 2749acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2750debug 2751version of the code includes the debug output trace mechanism and has a 2752much 2753larger code and data size. 2754 2755 Previous Release: 2756 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 2757 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 2758 Current Release: 2759 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 2760 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 2761 2762 27632) iASL Compiler/Disassembler and Tools: 2764 2765iASL: Added the infrastructure and initial implementation of a integrated 2766C- 2767like preprocessor. This will simplify BIOS development process by 2768eliminating 2769the need for a separate preprocessing step during builds. On Windows, it 2770also 2771eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 2772features including full #define() macro support are still under 2773development. 2774These preprocessor directives are supported: 2775 #define 2776 #elif 2777 #else 2778 #endif 2779 #error 2780 #if 2781 #ifdef 2782 #ifndef 2783 #include 2784 #pragma message 2785 #undef 2786 #warning 2787In addition, these new command line options are supported: 2788 -D <symbol> Define symbol for preprocessor use 2789 -li Create preprocessed output file (*.i) 2790 -P Preprocess only and create preprocessor output file (*.i) 2791 2792Table Compiler: Fixed a problem where the equals operator within an 2793expression 2794did not work properly. 2795 2796Updated iASL to use the current versions of Bison/Flex. Updated the 2797Windows 2798project file to invoke these tools from the standard location. ACPICA BZ 2799904. 2800Versions supported: 2801 Flex for Windows: V2.5.4 2802 Bison for Windows: V2.4.1 2803 2804---------------------------------------- 280515 February 2012. Summary of changes for version 20120215: 2806 2807 28081) ACPICA Core Subsystem: 2809 2810There have been some major changes to the sleep/wake support code, as 2811described below (a - e). 2812 2813a) The AcpiLeaveSleepState has been split into two interfaces, similar to 2814AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 2815AcpiLeaveSleepStatePrep. This allows the host to perform actions between 2816the 2817time the _BFS method is called and the _WAK method is called. NOTE: all 2818hosts 2819must update their wake/resume code or else sleep/wake will not work 2820properly. 2821Rafael Wysocki. 2822 2823b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the 2824_WAK 2825method. Some machines require that the GPEs are enabled before the _WAK 2826method 2827is executed. Thomas Renninger. 2828 2829c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) 2830bit. 2831Some BIOS code assumes that WAK_STS will be cleared on resume and use it 2832to 2833determine whether the system is rebooting or resuming. Matthew Garrett. 2834 2835d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From 2836Sleep) to 2837match the ACPI specification requirement. Rafael Wysocki. 2838 2839e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 2840registers within the V5 FADT. This support adds two new files: 2841hardware/hwesleep.c implements the support for the new registers. Moved 2842all 2843sleep/wake external interfaces to hardware/hwxfsleep.c. 2844 2845 2846Added a new OSL interface for ACPI table overrides, 2847AcpiOsPhysicalTableOverride. This interface allows the host to override a 2848table via a physical address, instead of the logical address required by 2849AcpiOsTableOverride. This simplifies the host implementation. Initial 2850implementation by Thomas Renninger. The ACPICA implementation creates a 2851single 2852shared function for table overrides that attempts both a logical and a 2853physical override. 2854 2855Expanded the OSL memory read/write interfaces to 64-bit data 2856(AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 2857transfer support for GAS register structures passed to AcpiRead and 2858AcpiWrite. 2859 2860Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a 2861custom 2862build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) 2863model. 2864See the ACPICA reference for details. ACPICA BZ 942. This option removes 2865about 286610% of the code and 5% of the static data, and the following hardware 2867ACPI 2868features become unavailable: 2869 PM Event and Control registers 2870 SCI interrupt (and handler) 2871 Fixed Events 2872 General Purpose Events (GPEs) 2873 Global Lock 2874 ACPI PM timer 2875 FACS table (Waking vectors and Global Lock) 2876 2877Updated the unix tarball directory structure to match the ACPICA git 2878source 2879tree. This ensures that the generic unix makefiles work properly (in 2880generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 2881867. 2882 2883Updated the return value of the _REV predefined method to integer value 5 2884to 2885reflect ACPI 5.0 support. 2886 2887Moved the external ACPI PM timer interface prototypes to the public 2888acpixf.h 2889file where they belong. 2890 2891Example Code and Data Size: These are the sizes for the OS-independent 2892acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2893debug 2894version of the code includes the debug output trace mechanism and has a 2895much 2896larger code and data size. 2897 2898 Previous Release: 2899 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 2900 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 2901 Current Release: 2902 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 2903 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 2904 2905 29062) iASL Compiler/Disassembler and Tools: 2907 2908Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 2909descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 2910incorrectly displayed. 2911 2912AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 2913specification. 2914 2915---------------------------------------- 291611 January 2012. Summary of changes for version 20120111: 2917 2918 29191) ACPICA Core Subsystem: 2920 2921Implemented a new mechanism to allow host device drivers to check for 2922address 2923range conflicts with ACPI Operation Regions. Both SystemMemory and 2924SystemIO 2925address spaces are supported. A new external interface, 2926AcpiCheckAddressRange, 2927allows drivers to check an address range against the ACPI namespace. See 2928the 2929ACPICA reference for additional details. Adds one new file, 2930utilities/utaddress.c. Lin Ming, Bob Moore. 2931 2932Fixed several issues with the ACPI 5.0 FADT support: Add the sleep 2933Control 2934and 2935Status registers, update the ACPI 5.0 flags, and update internal data 2936structures to handle an FADT larger than 256 bytes. The size of the ACPI 29375.0 2938FADT is 268 bytes. 2939 2940Updated all ACPICA copyrights and signons to 2012. Added the 2012 2941copyright to 2942all module headers and signons, including the standard Linux header. This 2943affects virtually every file in the ACPICA core subsystem, iASL compiler, 2944and 2945all ACPICA utilities. 2946 2947Example Code and Data Size: These are the sizes for the OS-independent 2948acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2949debug 2950version of the code includes the debug output trace mechanism and has a 2951much 2952larger code and data size. 2953 2954 Previous Release: 2955 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 2956 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 2957 Current Release: 2958 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 2959 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 2960 2961 29622) iASL Compiler/Disassembler and Tools: 2963 2964Disassembler: fixed a problem with the automatic resource tag generation 2965support. Fixes a problem where the resource tags are inadvertently not 2966constructed if the table being disassembled contains external references 2967to 2968control methods. Moved the actual construction of the tags to after the 2969final 2970namespace is constructed (after 2nd parse is invoked due to external 2971control 2972method references.) ACPICA BZ 941. 2973 2974Table Compiler: Make all "generic" operators caseless. These are the 2975operators 2976like UINT8, String, etc. Making these caseless improves ease-of-use. 2977ACPICA BZ 2978934. 2979 2980---------------------------------------- 298123 November 2011. Summary of changes for version 20111123: 2982 29830) ACPI 5.0 Support: 2984 2985This release contains full support for the ACPI 5.0 specification, as 2986summarized below. 2987 2988Reduced Hardware Support: 2989------------------------- 2990 2991This support allows for ACPI systems without the usual ACPI hardware. 2992This 2993support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA 2994will 2995not attempt to initialize or use any of the usual ACPI hardware. Note, 2996when 2997this flag is set, all of the following ACPI hardware is assumed to be not 2998present and is not initialized or accessed: 2999 3000 General Purpose Events (GPEs) 3001 Fixed Events (PM1a/PM1b and PM Control) 3002 Power Management Timer and Console Buttons (power/sleep) 3003 Real-time Clock Alarm 3004 Global Lock 3005 System Control Interrupt (SCI) 3006 The FACS is assumed to be non-existent 3007 3008ACPI Tables: 3009------------ 3010 3011All new tables and updates to existing tables are fully supported in the 3012ACPICA headers (for use by device drivers), the disassembler, and the 3013iASL 3014Data Table Compiler. ACPI 5.0 defines these new tables: 3015 3016 BGRT /* Boot Graphics Resource Table */ 3017 DRTM /* Dynamic Root of Trust for Measurement table */ 3018 FPDT /* Firmware Performance Data Table */ 3019 GTDT /* Generic Timer Description Table */ 3020 MPST /* Memory Power State Table */ 3021 PCCT /* Platform Communications Channel Table */ 3022 PMTT /* Platform Memory Topology Table */ 3023 RASF /* RAS Feature table */ 3024 3025Operation Regions/SpaceIDs: 3026--------------------------- 3027 3028All new operation regions are fully supported by the iASL compiler, the 3029disassembler, and the ACPICA runtime code (for dispatch to region 3030handlers.) 3031The new operation region Space IDs are: 3032 3033 GeneralPurposeIo 3034 GenericSerialBus 3035 3036Resource Descriptors: 3037--------------------- 3038 3039All new ASL resource descriptors are fully supported by the iASL 3040compiler, 3041the 3042ASL/AML disassembler, and the ACPICA runtime Resource Manager code 3043(including 3044all new predefined resource tags). New descriptors are: 3045 3046 FixedDma 3047 GpioIo 3048 GpioInt 3049 I2cSerialBus 3050 SpiSerialBus 3051 UartSerialBus 3052 3053ASL/AML Operators, New and Modified: 3054------------------------------------ 3055 3056One new operator is added, the Connection operator, which is used to 3057associate 3058a GeneralPurposeIo or GenericSerialBus resource descriptor with 3059individual 3060field objects within an operation region. Several new protocols are 3061associated 3062with the AccessAs operator. All are fully supported by the iASL compiler, 3063disassembler, and runtime ACPICA AML interpreter: 3064 3065 Connection // Declare Field Connection 3066attributes 3067 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 3068 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes 3069Protocol 3070 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 3071 RawDataBuffer // Data type for Vendor Data 3072fields 3073 3074Predefined ASL/AML Objects: 3075--------------------------- 3076 3077All new predefined objects/control-methods are supported by the iASL 3078compiler 3079and the ACPICA runtime validation/repair (arguments and return values.) 3080New 3081predefined names include the following: 3082 3083Standard Predefined Names (Objects or Control Methods): 3084 _AEI, _CLS, _CPC, _CWS, _DEP, 3085 _DLM, _EVT, _GCP, _CRT, _GWS, 3086 _HRV, _PRE, _PSE, _SRT, _SUB. 3087 3088Resource Tags (Names used to access individual fields within resource 3089descriptors): 3090 _DBT, _DPL, _DRS, _END, _FLC, 3091 _IOR, _LIN, _MOD, _PAR, _PHA, 3092 _PIN, _PPI, _POL, _RXL, _SLV, 3093 _SPE, _STB, _TXL, _VEN. 3094 3095ACPICA External Interfaces: 3096--------------------------- 3097 3098Several new interfaces have been defined for use by ACPI-related device 3099drivers and other host OS services: 3100 3101AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS 3102to 3103acquire and release AML mutexes that are defined in the DSDT/SSDT tables 3104provided by the BIOS. They are intended to be used in conjunction with 3105the 3106ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 3107mutual exclusion with the AML code/interpreter. 3108 3109AcpiGetEventResources: Returns the (formatted) resource descriptors as 3110defined 3111by the ACPI 5.0 _AEI object (ACPI Event Information). This object 3112provides 3113resource descriptors associated with hardware-reduced platform events, 3114similar 3115to the AcpiGetCurrentResources interface. 3116 3117Operation Region Handlers: For General Purpose IO and Generic Serial Bus 3118operation regions, information about the Connection() object and any 3119optional 3120length information is passed to the region handler within the Context 3121parameter. 3122 3123AcpiBufferToResource: This interface converts a raw AML buffer containing 3124a 3125resource template or resource descriptor to the ACPI_RESOURCE internal 3126format 3127suitable for use by device drivers. Can be used by an operation region 3128handler 3129to convert the Connection() buffer object into a ACPI_RESOURCE. 3130 3131Miscellaneous/Tools/TestSuites: 3132------------------------------- 3133 3134Support for extended _HID names (Four alpha characters instead of three). 3135Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 3136Support for ACPI 5.0 features in the ASLTS test suite. 3137Fully updated documentation (ACPICA and iASL reference documents.) 3138 3139ACPI Table Definition Language: 3140------------------------------- 3141 3142Support for this language was implemented and released as a subsystem of 3143the 3144iASL compiler in 2010. (See the iASL compiler User Guide.) 3145 3146 3147Non-ACPI 5.0 changes for this release: 3148-------------------------------------- 3149 31501) ACPICA Core Subsystem: 3151 3152Fix a problem with operation region declarations where a failure can 3153occur 3154if 3155the region name and an argument that evaluates to an object (such as the 3156region address) are in different namespace scopes. Lin Ming, ACPICA BZ 3157937. 3158 3159Do not abort an ACPI table load if an invalid space ID is found within. 3160This 3161will be caught later if the offending method is executed. ACPICA BZ 925. 3162 3163Fixed an issue with the FFixedHW space ID where the ID was not always 3164recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 3165 3166Fixed a problem with the 32-bit generation of the unix-specific OSL 3167(osunixxf.c). Lin Ming, ACPICA BZ 936. 3168 3169Several changes made to enable generation with the GCC 4.6 compiler. 3170ACPICA BZ 3171935. 3172 3173New error messages: Unsupported I/O requests (not 8/16/32 bit), and 3174Index/Bank 3175field registers out-of-range. 3176 31772) iASL Compiler/Disassembler and Tools: 3178 3179iASL: Implemented the __PATH__ operator, which returns the full pathname 3180of 3181the current source file. 3182 3183AcpiHelp: Automatically display expanded keyword information for all ASL 3184operators. 3185 3186Debugger: Add "Template" command to disassemble/dump resource template 3187buffers. 3188 3189Added a new master script to generate and execute the ASLTS test suite. 3190Automatically handles 32- and 64-bit generation. See tests/aslts.sh 3191 3192iASL: Fix problem with listing generation during processing of the 3193Switch() 3194operator where AML listing was disabled until the entire Switch block was 3195completed. 3196 3197iASL: Improve support for semicolon statement terminators. Fix "invalid 3198character" message for some cases when the semicolon is used. Semicolons 3199are 3200now allowed after every <Term> grammar element. ACPICA BZ 927. 3201 3202iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 3203923. 3204 3205Disassembler: Fix problem with disassembly of the DataTableRegion 3206operator 3207where an inadvertent "Unhandled deferred opcode" message could be 3208generated. 3209 32103) Example Code and Data Size 3211 3212These are the sizes for the OS-independent acpica.lib produced by the 3213Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 3214includes the debug output trace mechanism and has a much larger code and 3215data 3216size. 3217 3218 Previous Release: 3219 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3220 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3221 Current Release: 3222 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 3223 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 3224 3225---------------------------------------- 322622 September 2011. Summary of changes for version 20110922: 3227 32280) ACPI 5.0 News: 3229 3230Support for ACPI 5.0 in ACPICA has been underway for several months and 3231will 3232be released at the same time that ACPI 5.0 is officially released. 3233 3234The ACPI 5.0 specification is on track for release in the next few 3235months. 3236 32371) ACPICA Core Subsystem: 3238 3239Fixed a problem where the maximum sleep time for the Sleep() operator was 3240intended to be limited to two seconds, but was inadvertently limited to 324120 3242seconds instead. 3243 3244Linux and Unix makefiles: Added header file dependencies to ensure 3245correct 3246generation of ACPICA core code and utilities. Also simplified the 3247makefiles 3248considerably through the use of the vpath variable to specify search 3249paths. 3250ACPICA BZ 924. 3251 32522) iASL Compiler/Disassembler and Tools: 3253 3254iASL: Implemented support to check the access length for all fields 3255created to 3256access named Resource Descriptor fields. For example, if a resource field 3257is 3258defined to be two bits, a warning is issued if a CreateXxxxField() is 3259used 3260with an incorrect bit length. This is implemented for all current 3261resource 3262descriptor names. ACPICA BZ 930. 3263 3264Disassembler: Fixed a byte ordering problem with the output of 24-bit and 326556- 3266bit integers. 3267 3268iASL: Fixed a couple of issues associated with variable-length package 3269objects. 1) properly handle constants like One, Ones, Zero -- do not make 3270a 3271VAR_PACKAGE when these are used as a package length. 2) Allow the 3272VAR_PACKAGE 3273opcode (in addition to PACKAGE) when validating object types for 3274predefined 3275names. 3276 3277iASL: Emit statistics for all output files (instead of just the ASL input 3278and 3279AML output). Includes listings, hex files, etc. 3280 3281iASL: Added -G option to the table compiler to allow the compilation of 3282custom 3283ACPI tables. The only part of a table that is required is the standard 328436- 3285byte 3286ACPI header. 3287 3288AcpiXtract: Ported to the standard ACPICA environment (with ACPICA 3289headers), 3290which also adds correct 64-bit support. Also, now all output filenames 3291are 3292completely lower case. 3293 3294AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 3295loading table files. A warning is issued for any such tables. The only 3296exception is an FADT. This also fixes a possible fault when attempting to 3297load 3298non-AML tables. ACPICA BZ 932. 3299 3300AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where 3301a 3302missing table terminator could cause a fault when using the -p option. 3303 3304AcpiSrc: Fixed a possible divide-by-zero fault when generating file 3305statistics. 3306 33073) Example Code and Data Size 3308 3309These are the sizes for the OS-independent acpica.lib produced by the 3310Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 3311includes the debug output trace mechanism and has a much larger code and 3312data 3313size. 3314 3315 Previous Release (VC 9.0): 3316 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3317 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3318 Current Release (VC 9.0): 3319 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3320 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3321 3322 3323---------------------------------------- 332423 June 2011. Summary of changes for version 20110623: 3325 33261) ACPI CA Core Subsystem: 3327 3328Updated the predefined name repair mechanism to not attempt repair of a 3329_TSS 3330return object if a _PSS object is present. We can only sort the _TSS 3331return 3332package if there is no _PSS within the same scope. This is because if 3333_PSS 3334is 3335present, the ACPI specification dictates that the _TSS Power Dissipation 3336field 3337is to be ignored, and therefore some BIOSs leave garbage values in the 3338_TSS 3339Power field(s). In this case, it is best to just return the _TSS package 3340as- 3341is. Reported by, and fixed with assistance from Fenghua Yu. 3342 3343Added an option to globally disable the control method return value 3344validation 3345and repair. This runtime option can be used to disable return value 3346repair 3347if 3348this is causing a problem on a particular machine. Also added an option 3349to 3350AcpiExec (-dr) to set this disable flag. 3351 3352All makefiles and project files: Major changes to improve generation of 3353ACPICA 3354tools. ACPICA BZ 912: 3355 Reduce default optimization levels to improve compatibility 3356 For Linux, add strict-aliasing=0 for gcc 4 3357 Cleanup and simplify use of command line defines 3358 Cleanup multithread library support 3359 Improve usage messages 3360 3361Linux-specific header: update handling of THREAD_ID and pthread. For the 336232- 3363bit case, improve casting to eliminate possible warnings, especially with 3364the 3365acpica tools. 3366 3367Example Code and Data Size: These are the sizes for the OS-independent 3368acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3369debug 3370version of the code includes the debug output trace mechanism and has a 3371much 3372larger code and data size. 3373 3374 Previous Release (VC 9.0): 3375 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 3376 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3377 Current Release (VC 9.0): 3378 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3379 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3380 33812) iASL Compiler/Disassembler and Tools: 3382 3383With this release, a new utility named "acpihelp" has been added to the 3384ACPICA 3385package. This utility summarizes the ACPI specification chapters for the 3386ASL 3387and AML languages. It generates under Linux/Unix as well as Windows, and 3388provides the following functionality: 3389 Find/display ASL operator(s) -- with description and syntax. 3390 Find/display ASL keyword(s) -- with exact spelling and descriptions. 3391 Find/display ACPI predefined name(s) -- with description, number 3392 of arguments, and the return value data type. 3393 Find/display AML opcode name(s) -- with opcode, arguments, and 3394grammar. 3395 Decode/display AML opcode -- with opcode name, arguments, and 3396grammar. 3397 3398Service Layers: Make multi-thread support configurable. Conditionally 3399compile 3400the multi-thread support so that threading libraries will not be linked 3401if 3402not 3403necessary. The only tool that requires multi-thread support is AcpiExec. 3404 3405iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions 3406of 3407Bison appear to want the interface to yyerror to be a const char * (or at 3408least this is a problem when generating iASL on some systems.) ACPICA BZ 3409923 3410Pierre Lejeune. 3411 3412Tools: Fix for systems where O_BINARY is not defined. Only used for 3413Windows 3414versions of the tools. 3415 3416---------------------------------------- 341727 May 2011. Summary of changes for version 20110527: 3418 34191) ACPI CA Core Subsystem: 3420 3421ASL Load() operator: Reinstate most restrictions on the incoming ACPI 3422table 3423signature. Now, only allow SSDT, OEMx, and a null signature. History: 3424 1) Originally, we checked the table signature for "SSDT" or "PSDT". 3425 (PSDT is now obsolete.) 3426 2) We added support for OEMx tables, signature "OEM" plus a fourth 3427 "don't care" character. 3428 3) Valid tables were encountered with a null signature, so we just 3429 gave up on validating the signature, (05/2008). 3430 4) We encountered non-AML tables such as the MADT, which caused 3431 interpreter errors and kernel faults. So now, we once again allow 3432 only SSDT, OEMx, and now, also a null signature. (05/2011). 3433 3434Added the missing _TDL predefined name to the global name list in order 3435to 3436enable validation. Affects both the core ACPICA code and the iASL 3437compiler. 3438 3439Example Code and Data Size: These are the sizes for the OS-independent 3440acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3441debug 3442version of the code includes the debug output trace mechanism and has a 3443much 3444larger code and data size. 3445 3446 Previous Release (VC 9.0): 3447 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 3448 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 3449 Current Release (VC 9.0): 3450 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 3451 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3452 34532) iASL Compiler/Disassembler and Tools: 3454 3455Debugger/AcpiExec: Implemented support for "complex" method arguments on 3456the 3457debugger command line. This adds support beyond simple integers -- 3458including 3459Strings, Buffers, and Packages. Includes support for nested packages. 3460Increased the default command line buffer size to accommodate these 3461arguments. 3462See the ACPICA reference for details and syntax. ACPICA BZ 917. 3463 3464Debugger/AcpiExec: Implemented support for "default" method arguments for 3465the 3466Execute/Debug command. Now, the debugger will always invoke a control 3467method 3468with the required number of arguments -- even if the command line 3469specifies 3470none or insufficient arguments. It uses default integer values for any 3471missing 3472arguments. Also fixes a bug where only six method arguments maximum were 3473supported instead of the required seven. 3474 3475Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine 3476and 3477also return status in order to prevent buffer overruns. See the ACPICA 3478reference for details and syntax. ACPICA BZ 921 3479 3480iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 3481makefiles to simplify support for the two different but similar parser 3482generators, bison and yacc. 3483 3484Updated the generic unix makefile for gcc 4. The default gcc version is 3485now 3486expected to be 4 or greater, since options specific to gcc 4 are used. 3487 3488---------------------------------------- 348913 April 2011. Summary of changes for version 20110413: 3490 34911) ACPI CA Core Subsystem: 3492 3493Implemented support to execute a so-called "orphan" _REG method under the 3494EC 3495device. This change will force the execution of a _REG method underneath 3496the 3497EC 3498device even if there is no corresponding operation region of type 3499EmbeddedControl. Fixes a problem seen on some machines and apparently is 3500compatible with Windows behavior. ACPICA BZ 875. 3501 3502Added more predefined methods that are eligible for automatic NULL 3503package 3504element removal. This change adds another group of predefined names to 3505the 3506list 3507of names that can be repaired by having NULL package elements dynamically 3508removed. This group are those methods that return a single variable- 3509length 3510package containing simple data types such as integers, buffers, strings. 3511This 3512includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, 3513_PSL, 3514_Sx, 3515and _TZD. ACPICA BZ 914. 3516 3517Split and segregated all internal global lock functions to a new file, 3518evglock.c. 3519 3520Updated internal address SpaceID for DataTable regions. Moved this 3521internal 3522space 3523id in preparation for ACPI 5.0 changes that will include some new space 3524IDs. 3525This 3526change should not affect user/host code. 3527 3528Example Code and Data Size: These are the sizes for the OS-independent 3529acpica.lib 3530produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 3531version of 3532the code includes the debug output trace mechanism and has a much larger 3533code 3534and 3535data size. 3536 3537 Previous Release (VC 9.0): 3538 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 3539 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 3540 Current Release (VC 9.0): 3541 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 3542 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 3543 35442) iASL Compiler/Disassembler and Tools: 3545 3546iASL/DTC: Major update for new grammar features. Allow generic data types 3547in 3548custom ACPI tables. Field names are now optional. Any line can be split 3549to 3550multiple lines using the continuation char (\). Large buffers now use 3551line- 3552continuation character(s) and no colon on the continuation lines. See the 3553grammar 3554update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob 3555Moore. 3556 3557iASL: Mark ASL "Return()" and the simple "Return" as "Null" return 3558statements. 3559Since the parser stuffs a "zero" as the return value for these statements 3560(due 3561to 3562the underlying AML grammar), they were seen as "return with value" by the 3563iASL 3564semantic checking. They are now seen correctly as "null" return 3565statements. 3566 3567iASL: Check if a_REG declaration has a corresponding Operation Region. 3568Adds a 3569check for each _REG to ensure that there is in fact a corresponding 3570operation 3571region declaration in the same scope. If not, the _REG method is not very 3572useful 3573since it probably won't be executed. ACPICA BZ 915. 3574 3575iASL/DTC: Finish support for expression evaluation. Added a new 3576expression 3577parser 3578that implements c-style operator precedence and parenthesization. ACPICA 3579bugzilla 3580908. 3581 3582Disassembler/DTC: Remove support for () and <> style comments in data 3583tables. 3584Now 3585that DTC has full expression support, we don't want to have comment 3586strings 3587that 3588start with a parentheses or a less-than symbol. Now, only the standard /* 3589and 3590// 3591comments are supported, as well as the bracket [] comments. 3592 3593AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 3594"unusual" 3595headers in the acpidump file. Update the header validation to support 3596these 3597tables. Problem introduced in previous AcpiXtract version in the change 3598to 3599support "wrong checksum" error messages emitted by acpidump utility. 3600 3601iASL: Add a * option to generate all template files (as a synonym for 3602ALL) 3603as 3604in 3605"iasl -T *" or "iasl -T ALL". 3606 3607iASL/DTC: Do not abort compiler on fatal errors. We do not want to 3608completely 3609abort the compiler on "fatal" errors, simply should abort the current 3610compile. 3611This allows multiple compiles with a single (possibly wildcard) compiler 3612invocation. 3613 3614---------------------------------------- 361516 March 2011. Summary of changes for version 20110316: 3616 36171) ACPI CA Core Subsystem: 3618 3619Fixed a problem caused by a _PRW method appearing at the namespace root 3620scope 3621during the setup of wake GPEs. A fault could occur if a _PRW directly 3622under 3623the 3624root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 3625 3626Implemented support for "spurious" Global Lock interrupts. On some 3627systems, a 3628global lock interrupt can occur without the pending flag being set. Upon 3629a 3630GL 3631interrupt, we now ensure that a thread is actually waiting for the lock 3632before 3633signaling GL availability. Rafael Wysocki, Bob Moore. 3634 3635Example Code and Data Size: These are the sizes for the OS-independent 3636acpica.lib 3637produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 3638version of 3639the code includes the debug output trace mechanism and has a much larger 3640code 3641and 3642data size. 3643 3644 Previous Release (VC 9.0): 3645 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 3646 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 3647 Current Release (VC 9.0): 3648 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 3649 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 3650 36512) iASL Compiler/Disassembler and Tools: 3652 3653Implemented full support for the "SLIC" ACPI table. Includes support in 3654the 3655header files, disassembler, table compiler, and template generator. Bob 3656Moore, 3657Lin Ming. 3658 3659AcpiXtract: Correctly handle embedded comments and messages from 3660AcpiDump. 3661Apparently some or all versions of acpidump will occasionally emit a 3662comment 3663like 3664"Wrong checksum", etc., into the dump file. This was causing problems for 3665AcpiXtract. ACPICA BZ 905. 3666 3667iASL: Fix the Linux makefile by removing an inadvertent double file 3668inclusion. 3669ACPICA BZ 913. 3670 3671AcpiExec: Update installation of operation region handlers. Install one 3672handler 3673for a user-defined address space. This is used by the ASL test suite 3674(ASLTS). 3675 3676---------------------------------------- 367711 February 2011. Summary of changes for version 20110211: 3678 36791) ACPI CA Core Subsystem: 3680 3681Added a mechanism to defer _REG methods for some early-installed 3682handlers. 3683Most user handlers should be installed before call to 3684AcpiEnableSubsystem. 3685However, Event handlers and region handlers should be installed after 3686AcpiInitializeObjects. Override handlers for the "default" regions should 3687be 3688installed early, however. This change executes all _REG methods for the 3689default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 3690chicken/egg issues between them. ACPICA BZ 848. 3691 3692Implemented an optimization for GPE detection. This optimization will 3693simply 3694ignore GPE registers that contain no enabled GPEs -- there is no need to 3695read the register since this information is available internally. This 3696becomes more important on machines with a large GPE space. ACPICA 3697bugzilla 3698884. Lin Ming. Suggestion from Joe Liu. 3699 3700Removed all use of the highly unreliable FADT revision field. The 3701revision 3702number in the FADT has been found to be completely unreliable and cannot 3703be 3704trusted. Only the actual table length can be used to infer the version. 3705This 3706change updates the ACPICA core and the disassembler so that both no 3707longer 3708even look at the FADT version and instead depend solely upon the FADT 3709length. 3710 3711Fix an unresolved name issue for the no-debug and no-error-message source 3712generation cases. The _AcpiModuleName was left undefined in these cases, 3713but 3714it is actually needed as a parameter to some interfaces. Define 3715_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 3716 3717Split several large files (makefiles and project files updated) 3718 utglobal.c -> utdecode.c 3719 dbcomds.c -> dbmethod.c dbnames.c 3720 dsopcode.c -> dsargs.c dscontrol.c 3721 dsload.c -> dsload2.c 3722 aslanalyze.c -> aslbtypes.c aslwalks.c 3723 3724Example Code and Data Size: These are the sizes for the OS-independent 3725acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3726debug version of the code includes the debug output trace mechanism and 3727has 3728a much larger code and data size. 3729 3730 Previous Release (VC 9.0): 3731 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 3732 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 3733 Current Release (VC 9.0): 3734 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 3735 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 3736 37372) iASL Compiler/Disassembler and Tools: 3738 3739iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 3740These are useful C-style macros with the standard definitions. ACPICA 3741bugzilla 898. 3742 3743iASL/DTC: Added support for integer expressions and labels. Support for 3744full 3745expressions for all integer fields in all ACPI tables. Support for labels 3746in 3747"generic" portions of tables such as UEFI. See the iASL reference manual. 3748 3749Debugger: Added a command to display the status of global handlers. The 3750"handlers" command will display op region, fixed event, and miscellaneous 3751global handlers. installation status -- and for op regions, whether 3752default 3753or user-installed handler will be used. 3754 3755iASL: Warn if reserved method incorrectly returns a value. Many 3756predefined 3757names are defined such that they do not return a value. If implemented as 3758a 3759method, issue a warning if such a name explicitly returns a value. ACPICA 3760Bugzilla 855. 3761 3762iASL: Added detection of GPE method name conflicts. Detects a conflict 3763where 3764there are two GPE methods of the form _Lxy and _Exy in the same scope. 3765(For 3766example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 3767 3768iASL/DTC: Fixed a couple input scanner issues with comments and line 3769numbers. Comment remover could get confused and miss a comment ending. 3770Fixed 3771a problem with line counter maintenance. 3772 3773iASL/DTC: Reduced the severity of some errors from fatal to error. There 3774is 3775no need to abort on simple errors within a field definition. 3776 3777Debugger: Simplified the output of the help command. All help output now 3778in 3779a single screen, instead of help subcommands. ACPICA Bugzilla 897. 3780 3781---------------------------------------- 378212 January 2011. Summary of changes for version 20110112: 3783 37841) ACPI CA Core Subsystem: 3785 3786Fixed a race condition between method execution and namespace walks that 3787can 3788possibly cause a fault. The problem was apparently introduced in version 378920100528 as a result of a performance optimization that reduces the 3790number 3791of 3792namespace walks upon method exit by using the delete_namespace_subtree 3793function instead of the delete_namespace_by_owner function used 3794previously. 3795Bug is a missing namespace lock in the delete_namespace_subtree function. 3796dana.myers@oracle.com 3797 3798Fixed several issues and a possible fault with the automatic "serialized" 3799method support. History: This support changes a method to "serialized" on 3800the 3801fly if the method generates an AE_ALREADY_EXISTS error, indicating the 3802possibility that it cannot handle reentrancy. This fix repairs a couple 3803of 3804issues seen in the field, especially on machines with many cores: 3805 3806 1) Delete method children only upon the exit of the last thread, 3807 so as to not delete objects out from under other running threads 3808 (and possibly causing a fault.) 3809 2) Set the "serialized" bit for the method only upon the exit of the 3810 Last thread, so as to not cause deadlock when running threads 3811 attempt to exit. 3812 3) Cleanup the use of the AML "MethodFlags" and internal method flags 3813 so that there is no longer any confusion between the two. 3814 3815 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 3816 3817Debugger: Now lock the namespace for duration of a namespace dump. 3818Prevents 3819issues if the namespace is changing dynamically underneath the debugger. 3820Especially affects temporary namespace nodes, since the debugger displays 3821these also. 3822 3823Updated the ordering of include files. The ACPICA headers should appear 3824before any compiler-specific headers (stdio.h, etc.) so that acenv.h can 3825set 3826any necessary compiler-specific defines, etc. Affects the ACPI-related 3827tools 3828and utilities. 3829 3830Updated all ACPICA copyrights and signons to 2011. Added the 2011 3831copyright 3832to all module headers and signons, including the Linux header. This 3833affects 3834virtually every file in the ACPICA core subsystem, iASL compiler, and all 3835utilities. 3836 3837Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 3838project files for VC++ 6.0 are now obsolete. New project files can be 3839found 3840under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 3841details. 3842 3843Example Code and Data Size: These are the sizes for the OS-independent 3844acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3845debug version of the code includes the debug output trace mechanism and 3846has a 3847much larger code and data size. 3848 3849 Previous Release (VC 6.0): 3850 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 3851 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 3852 Current Release (VC 9.0): 3853 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 3854 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 3855 38562) iASL Compiler/Disassembler and Tools: 3857 3858iASL: Added generic data types to the Data Table compiler. Add "generic" 3859data 3860types such as UINT32, String, Unicode, etc., to simplify the generation 3861of 3862platform-defined tables such as UEFI. Lin Ming. 3863 3864iASL: Added listing support for the Data Table Compiler. Adds listing 3865support 3866(-l) to display actual binary output for each line of input code. 3867 3868---------------------------------------- 386909 December 2010. Summary of changes for version 20101209: 3870 38711) ACPI CA Core Subsystem: 3872 3873Completed the major overhaul of the GPE support code that was begun in 3874July 38752010. Major features include: removal of _PRW execution in ACPICA (host 3876executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 3877changes to existing interfaces, simplification of GPE handler operation, 3878and 3879a handful of new interfaces: 3880 3881 AcpiUpdateAllGpes 3882 AcpiFinishGpe 3883 AcpiSetupGpeForWake 3884 AcpiSetGpeWakeMask 3885 One new file, evxfgpe.c to consolidate all external GPE interfaces. 3886 3887See the ACPICA Programmer Reference for full details and programming 3888information. See the new section 4.4 "General Purpose Event (GPE) 3889Support" 3890for a full overview, and section 8.7 "ACPI General Purpose Event 3891Management" 3892for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin 3893Ming, 3894Bob Moore, Rafael Wysocki. 3895 3896Implemented a new GPE feature for Windows compatibility, the "Implicit 3897Wake 3898GPE Notify". This feature will automatically issue a Notify(2) on a 3899device 3900when a Wake GPE is received if there is no corresponding GPE method or 3901handler. ACPICA BZ 870. 3902 3903Fixed a problem with the Scope() operator during table parse and load 3904phase. 3905During load phase (table load or method execution), the scope operator 3906should 3907not enter the target into the namespace. Instead, it should open a new 3908scope 3909at the target location. Linux BZ 19462, ACPICA BZ 882. 3910 3911Example Code and Data Size: These are the sizes for the OS-independent 3912acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3913debug version of the code includes the debug output trace mechanism and 3914has a 3915much larger code and data size. 3916 3917 Previous Release: 3918 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 3919 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 3920 Current Release: 3921 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 3922 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 3923 39242) iASL Compiler/Disassembler and Tools: 3925 3926iASL: Relax the alphanumeric restriction on _CID strings. These strings 3927are 3928"bus-specific" per the ACPI specification, and therefore any characters 3929are 3930acceptable. The only checks that can be performed are for a null string 3931and 3932perhaps for a leading asterisk. ACPICA BZ 886. 3933 3934iASL: Fixed a problem where a syntax error that caused a premature EOF 3935condition on the source file emitted a very confusing error message. The 3936premature EOF is now detected correctly. ACPICA BZ 891. 3937 3938Disassembler: Decode the AccessSize within a Generic Address Structure 3939(byte 3940access, word access, etc.) Note, this field does not allow arbitrary bit 3941access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 3942 3943New: AcpiNames utility - Example namespace dump utility. Shows an example 3944of 3945ACPICA configuration for a minimal namespace dump utility. Uses table and 3946namespace managers, but no AML interpreter. Does not add any 3947functionality 3948over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 3949partition and configure ACPICA. ACPICA BZ 883. 3950 3951AML Debugger: Increased the debugger buffer size for method return 3952objects. 3953Was 4K, increased to 16K. Also enhanced error messages for debugger 3954method 3955execution, including the buffer overflow case. 3956 3957---------------------------------------- 395813 October 2010. Summary of changes for version 20101013: 3959 39601) ACPI CA Core Subsystem: 3961 3962Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, 3963now 3964clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 3965HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 3966 3967Changed the type of the predefined namespace object _TZ from ThermalZone 3968to 3969Device. This was found to be confusing to the host software that 3970processes 3971the various thermal zones, since _TZ is not really a ThermalZone. 3972However, 3973a 3974Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 3975Zhang. 3976 3977Added Windows Vista SP2 to the list of supported _OSI strings. The actual 3978string is "Windows 2006 SP2". 3979 3980Eliminated duplicate code in AcpiUtExecute* functions. Now that the 3981nsrepair 3982code automatically repairs _HID-related strings, this type of code is no 3983longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 3984878. 3985 3986Example Code and Data Size: These are the sizes for the OS-independent 3987acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3988debug version of the code includes the debug output trace mechanism and 3989has a 3990much larger code and data size. 3991 3992 Previous Release: 3993 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 3994 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 3995 Current Release: 3996 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 3997 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 3998 39992) iASL Compiler/Disassembler and Tools: 4000 4001iASL: Implemented additional compile-time validation for _HID strings. 4002The 4003non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the 4004length 4005of 4006the string must be exactly seven or eight characters. For both _HID and 4007_CID 4008strings, all characters must be alphanumeric. ACPICA BZ 874. 4009 4010iASL: Allow certain "null" resource descriptors. Some BIOS code creates 4011descriptors that are mostly or all zeros, with the expectation that they 4012will 4013be filled in at runtime. iASL now allows this as long as there is a 4014"resource 4015tag" (name) associated with the descriptor, which gives the ASL a handle 4016needed to modify the descriptor. ACPICA BZ 873. 4017 4018Added single-thread support to the generic Unix application OSL. 4019Primarily 4020for iASL support, this change removes the use of semaphores in the 4021single- 4022threaded ACPICA tools/applications - increasing performance. The 4023_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 4024option. ACPICA BZ 879. 4025 4026AcpiExec: several fixes for the 64-bit version. Adds XSDT support and 4027support 4028for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 4029 4030iASL: Moved all compiler messages to a new file, aslmessages.h. 4031 4032---------------------------------------- 403315 September 2010. Summary of changes for version 20100915: 4034 40351) ACPI CA Core Subsystem: 4036 4037Removed the AcpiOsDerivePciId OSL interface. The various host 4038implementations 4039of this function were not OS-dependent and are now obsolete and can be 4040removed from all host OSLs. This function has been replaced by 4041AcpiHwDerivePciId, which is now part of the ACPICA core code. 4042AcpiHwDerivePciId has been implemented without recursion. Adds one new 4043module, hwpci.c. ACPICA BZ 857. 4044 4045Implemented a dynamic repair for _HID and _CID strings. The following 4046problems are now repaired at runtime: 1) Remove a leading asterisk in the 4047string, and 2) the entire string is uppercased. Both repairs are in 4048accordance with the ACPI specification and will simplify host driver 4049code. 4050ACPICA BZ 871. 4051 4052The ACPI_THREAD_ID type is no longer configurable, internally it is now 4053always UINT64. This simplifies the ACPICA code, especially any printf 4054output. 4055UINT64 is the only common data type for all thread_id types across all 4056operating systems. It is now up to the host OSL to cast the native 4057thread_id 4058type to UINT64 before returning the value to ACPICA (via 4059AcpiOsGetThreadId). 4060Lin Ming, Bob Moore. 4061 4062Added the ACPI_INLINE type to enhance the ACPICA configuration. The 4063"inline" 4064keyword is not standard across compilers, and this type allows inline to 4065be 4066configured on a per-compiler basis. Lin Ming. 4067 4068Made the system global AcpiGbl_SystemAwakeAndRunning publically 4069available. 4070Added an extern for this boolean in acpixf.h. Some hosts utilize this 4071value 4072during suspend/restore operations. ACPICA BZ 869. 4073 4074All code that implements error/warning messages with the "ACPI:" prefix 4075has 4076been moved to a new module, utxferror.c. 4077 4078The UINT64_OVERLAY was moved to utmath.c, which is the only module where 4079it 4080is used. ACPICA BZ 829. Lin Ming, Bob Moore. 4081 4082Example Code and Data Size: These are the sizes for the OS-independent 4083acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4084debug version of the code includes the debug output trace mechanism and 4085has a 4086much larger code and data size. 4087 4088 Previous Release: 4089 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 4090 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 4091 Current Release: 4092 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4093 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4094 40952) iASL Compiler/Disassembler and Tools: 4096 4097iASL/Disassembler: Write ACPI errors to stderr instead of the output 4098file. 4099This keeps the output files free of random error messages that may 4100originate 4101from within the namespace/interpreter code. Used this opportunity to 4102merge 4103all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 4104866. Lin Ming, Bob Moore. 4105 4106Tools: update some printfs for ansi warnings on size_t. Handle width 4107change 4108of size_t on 32-bit versus 64-bit generations. Lin Ming. 4109 4110---------------------------------------- 411106 August 2010. Summary of changes for version 20100806: 4112 41131) ACPI CA Core Subsystem: 4114 4115Designed and implemented a new host interface to the _OSI support code. 4116This 4117will allow the host to dynamically add or remove multiple _OSI strings, 4118as 4119well as install an optional handler that is called for each _OSI 4120invocation. 4121Also added a new AML debugger command, 'osi' to display and modify the 4122global 4123_OSI string table, and test support in the AcpiExec utility. See the 4124ACPICA 4125reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 4126New Functions: 4127 AcpiInstallInterface - Add an _OSI string. 4128 AcpiRemoveInterface - Delete an _OSI string. 4129 AcpiInstallInterfaceHandler - Install optional _OSI handler. 4130Obsolete Functions: 4131 AcpiOsValidateInterface - no longer used. 4132New Files: 4133 source/components/utilities/utosi.c 4134 4135Re-introduced the support to enable multi-byte transfers for Embedded 4136Controller (EC) operation regions. A reported problem was found to be a 4137bug 4138in the host OS, not in the multi-byte support. Previously, the maximum 4139data 4140size passed to the EC operation region handler was a single byte. There 4141are 4142often EC Fields larger than one byte that need to be transferred, and it 4143is 4144useful for the EC driver to lock these as a single transaction. This 4145change 4146enables single transfers larger than 8 bits. This effectively changes the 4147access to the EC space from ByteAcc to AnyAcc, and will probably require 4148changes to the host OS Embedded Controller driver to enable 16/32/64/256- 4149bit 4150transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 4151 4152Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 4153prototype in acpiosxf.h had the output value pointer as a (void *). 4154It should be a (UINT64 *). This may affect some host OSL code. 4155 4156Fixed a couple problems with the recently modified Linux makefiles for 4157iASL 4158and AcpiExec. These new makefiles place the generated object files in the 4159local directory so that there can be no collisions between the files that 4160are 4161shared between them that are compiled with different options. 4162 4163Example Code and Data Size: These are the sizes for the OS-independent 4164acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4165debug version of the code includes the debug output trace mechanism and 4166has a 4167much larger code and data size. 4168 4169 Previous Release: 4170 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4171 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 4172 Current Release: 4173 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 4174 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 4175 41762) iASL Compiler/Disassembler and Tools: 4177 4178iASL/Disassembler: Added a new option (-da, "disassemble all") to load 4179the 4180namespace from and disassemble an entire group of AML files. Useful for 4181loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) 4182and 4183disassembling with one simple command. ACPICA BZ 865. Lin Ming. 4184 4185iASL: Allow multiple invocations of -e option. This change allows 4186multiple 4187uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 4188834. 4189Lin Ming. 4190 4191---------------------------------------- 419202 July 2010. Summary of changes for version 20100702: 4193 41941) ACPI CA Core Subsystem: 4195 4196Implemented several updates to the recently added GPE reference count 4197support. The model for "wake" GPEs is changing to give the host OS 4198complete 4199control of these GPEs. Eventually, the ACPICA core will not execute any 4200_PRW 4201methods, since the host already must execute them. Also, additional 4202changes 4203were made to help ensure that the reference counts are kept in proper 4204synchronization with reality. Rafael J. Wysocki. 4205 42061) Ensure that GPEs are not enabled twice during initialization. 42072) Ensure that GPE enable masks stay in sync with the reference count. 42083) Do not inadvertently enable GPEs when writing GPE registers. 42094) Remove the internal wake reference counter and add new AcpiGpeWakeup 4210interface. This interface will set or clear individual GPEs for wakeup. 42115) Remove GpeType argument from AcpiEnable and AcpiDisable. These 4212interfaces 4213are now used for "runtime" GPEs only. 4214 4215Changed the behavior of the GPE install/remove handler interfaces. The 4216GPE 4217is 4218no longer disabled during this process, as it was found to cause problems 4219on 4220some machines. Rafael J. Wysocki. 4221 4222Reverted a change introduced in version 20100528 to enable Embedded 4223Controller multi-byte transfers. This change was found to cause problems 4224with 4225Index Fields and possibly Bank Fields. It will be reintroduced when these 4226problems have been resolved. 4227 4228Fixed a problem with references to Alias objects within Package Objects. 4229A 4230reference to an Alias within the definition of a Package was not always 4231resolved properly. Aliases to objects like Processors, Thermal zones, 4232etc. 4233were resolved to the actual object instead of a reference to the object 4234as 4235it 4236should be. Package objects are only allowed to contain integer, string, 4237buffer, package, and reference objects. Redhat bugzilla 608648. 4238 4239Example Code and Data Size: These are the sizes for the OS-independent 4240acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4241debug version of the code includes the debug output trace mechanism and 4242has a 4243much larger code and data size. 4244 4245 Previous Release: 4246 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4247 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 4248 Current Release: 4249 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4250 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 4251 42522) iASL Compiler/Disassembler and Tools: 4253 4254iASL: Implemented a new compiler subsystem to allow definition and 4255compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. 4256These 4257are called "ACPI Data Tables", and the new compiler is the "Data Table 4258Compiler". This compiler is intended to simplify the existing error-prone 4259process of creating these tables for the BIOS, as well as allowing the 4260disassembly, modification, recompilation, and override of existing ACPI 4261data 4262tables. See the iASL User Guide for detailed information. 4263 4264iASL: Implemented a new Template Generator option in support of the new 4265Data 4266Table Compiler. This option will create examples of all known ACPI tables 4267that can be used as the basis for table development. See the iASL 4268documentation and the -T option. 4269 4270Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 4271Descriptor Table). 4272 4273Updated the Linux makefiles for iASL and AcpiExec to place the generated 4274object files in the local directory so that there can be no collisions 4275between the shared files between them that are generated with different 4276options. 4277 4278Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. 4279Use 4280the #define __APPLE__ to enable this support. 4281 4282---------------------------------------- 428328 May 2010. Summary of changes for version 20100528: 4284 4285Note: The ACPI 4.0a specification was released on April 5, 2010 and is 4286available at www.acpi.info. This is primarily an errata release. 4287 42881) ACPI CA Core Subsystem: 4289 4290Undefined ACPI tables: We are looking for the definitions for the 4291following 4292ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 4293 4294Implemented support to enable multi-byte transfers for Embedded 4295Controller 4296(EC) operation regions. Previously, the maximum data size passed to the 4297EC 4298operation region handler was a single byte. There are often EC Fields 4299larger 4300than one byte that need to be transferred, and it is useful for the EC 4301driver 4302to lock these as a single transaction. This change enables single 4303transfers 4304larger than 8 bits. This effectively changes the access to the EC space 4305from 4306ByteAcc to AnyAcc, and will probably require changes to the host OS 4307Embedded 4308Controller driver to enable 16/32/64/256-bit transfers in addition to 8- 4309bit 4310transfers. Alexey Starikovskiy, Lin Ming 4311 4312Implemented a performance enhancement for namespace search and access. 4313This 4314change enhances the performance of namespace searches and walks by adding 4315a 4316backpointer to the parent in each namespace node. On large namespaces, 4317this 4318change can improve overall ACPI performance by up to 9X. Adding a pointer 4319to 4320each namespace node increases the overall size of the internal namespace 4321by 4322about 5%, since each namespace entry usually consists of both a namespace 4323node and an ACPI operand object. However, this is the first growth of the 4324namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 4325 4326Implemented a performance optimization that reduces the number of 4327namespace 4328walks. On control method exit, only walk the namespace if the method is 4329known 4330to have created namespace objects outside of its local scope. Previously, 4331the 4332entire namespace was traversed on each control method exit. This change 4333can 4334improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob 4335Moore. 4336 4337Added support to truncate I/O addresses to 16 bits for Windows 4338compatibility. 4339Some ASL code has been seen in the field that inadvertently has bits set 4340above bit 15. This feature is optional and is enabled if the BIOS 4341requests 4342any Windows OSI strings. It can also be enabled by the host OS. Matthew 4343Garrett, Bob Moore. 4344 4345Added support to limit the maximum time for the ASL Sleep() operator. To 4346prevent accidental deep sleeps, limit the maximum time that Sleep() will 4347actually sleep. Configurable, the default maximum is two seconds. ACPICA 4348bugzilla 854. 4349 4350Added run-time validation support for the _WDG and_WED Microsoft 4351predefined 4352methods. These objects are defined by "Windows Instrumentation", and are 4353not 4354part of the ACPI spec. ACPICA BZ 860. 4355 4356Expanded all statistic counters used during namespace and device 4357initialization from 16 to 32 bits in order to support very large 4358namespaces. 4359 4360Replaced all instances of %d in printf format specifiers with %u since 4361nearly 4362all integers in ACPICA are unsigned. 4363 4364Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly 4365returned 4366as AE_NO_HANDLER. 4367 4368Example Code and Data Size: These are the sizes for the OS-independent 4369acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4370debug version of the code includes the debug output trace mechanism and 4371has a 4372much larger code and data size. 4373 4374 Previous Release: 4375 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 4376 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 4377 Current Release: 4378 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4379 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 4380 43812) iASL Compiler/Disassembler and Tools: 4382 4383iASL: Added compiler support for the _WDG and_WED Microsoft predefined 4384methods. These objects are defined by "Windows Instrumentation", and are 4385not 4386part of the ACPI spec. ACPICA BZ 860. 4387 4388AcpiExec: added option to disable the memory tracking mechanism. The -dt 4389option will disable the tracking mechanism, which improves performance 4390considerably. 4391 4392AcpiExec: Restructured the command line options into -d (disable) and -e 4393(enable) options. 4394 4395---------------------------------------- 439628 April 2010. Summary of changes for version 20100428: 4397 43981) ACPI CA Core Subsystem: 4399 4400Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 4401including FADT-based and GPE Block Devices, execute any _PRW methods in 4402the 4403new table, and process any _Lxx/_Exx GPE methods in the new table. Any 4404runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 4405immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 4406Devices. Provides compatibility with other ACPI implementations. Two new 4407files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob 4408Moore. 4409 4410Fixed a regression introduced in version 20100331 within the table 4411manager 4412where initial table loading could fail. This was introduced in the fix 4413for 4414AcpiReallocateRootTable. Also, renamed some of fields in the table 4415manager 4416data structures to clarify their meaning and use. 4417 4418Fixed a possible allocation overrun during internal object copy in 4419AcpiUtCopySimpleObject. The original code did not correctly handle the 4420case 4421where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 4422847. 4423 4424Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 4425possible access beyond end-of-allocation. Also, now fully validate 4426descriptor 4427(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 4428 4429Example Code and Data Size: These are the sizes for the OS-independent 4430acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4431debug version of the code includes the debug output trace mechanism and 4432has a 4433much larger code and data size. 4434 4435 Previous Release: 4436 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 4437 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 4438 Current Release: 4439 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 4440 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 4441 44422) iASL Compiler/Disassembler and Tools: 4443 4444iASL: Implemented Min/Max/Len/Gran validation for address resource 4445descriptors. This change implements validation for the address fields 4446that 4447are common to all address-type resource descriptors. These checks are 4448implemented: Checks for valid Min/Max, length within the Min/Max window, 4449valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as 4450per 4451table 6-40 in the ACPI 4.0a specification. Also split the large 4452aslrestype1.c 4453and aslrestype2.c files into five new files. ACPICA BZ 840. 4454 4455iASL: Added support for the _Wxx predefined names. This support was 4456missing 4457and these names were not recognized by the compiler as valid predefined 4458names. ACPICA BZ 851. 4459 4460iASL: Added an error for all predefined names that are defined to return 4461no 4462value and thus must be implemented as Control Methods. These include all 4463of 4464the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 4465names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 4466 4467iASL: Implemented the -ts option to emit hex AML data in ASL format, as 4468an 4469ASL Buffer. Allows ACPI tables to be easily included within ASL files, to 4470be 4471dynamically loaded via the Load() operator. Also cleaned up output for 4472the 4473- 4474ta and -tc options. ACPICA BZ 853. 4475 4476Tests: Added a new file with examples of extended iASL error checking. 4477Demonstrates the advanced error checking ability of the iASL compiler. 4478Available at tests/misc/badcode.asl. 4479 4480---------------------------------------- 448131 March 2010. Summary of changes for version 20100331: 4482 44831) ACPI CA Core Subsystem: 4484 4485Completed a major update for the GPE support in order to improve support 4486for 4487shared GPEs and to simplify both host OS and ACPICA code. Added a 4488reference 4489count mechanism to support shared GPEs that require multiple device 4490drivers. 4491Several external interfaces have changed. One external interface has been 4492removed. One new external interface was added. Most of the GPE external 4493interfaces now use the GPE spinlock instead of the events mutex (and the 4494Flags parameter for many GPE interfaces has been removed.) See the 4495updated 4496ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, 4497Rafael 4498Wysocki. ACPICA BZ 831. 4499 4500Changed: 4501 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 4502Removed: 4503 AcpiSetGpeType 4504New: 4505 AcpiSetGpe 4506 4507Implemented write support for DataTable operation regions. These regions 4508are 4509defined via the DataTableRegion() operator. Previously, only read support 4510was 4511implemented. The ACPI specification allows DataTableRegions to be 4512read/write, 4513however. 4514 4515Implemented a new subsystem option to force a copy of the DSDT to local 4516memory. Optionally copy the entire DSDT to local memory (instead of 4517simply 4518mapping it.) There are some (albeit very rare) BIOSs that corrupt or 4519replace 4520the original DSDT, creating the need for this option. Default is FALSE, 4521do 4522not copy the DSDT. 4523 4524Implemented detection of a corrupted or replaced DSDT. This change adds 4525support to detect a DSDT that has been corrupted and/or replaced from 4526outside 4527the OS (by firmware). This is typically catastrophic for the system, but 4528has 4529been seen on some machines. Once this problem has been detected, the DSDT 4530copy option can be enabled via system configuration. Lin Ming, Bob Moore. 4531 4532Fixed two problems with AcpiReallocateRootTable during the root table 4533copy. 4534When copying the root table to the new allocation, the length used was 4535incorrect. The new size was used instead of the current table size, 4536meaning 4537too much data was copied. Also, the count of available slots for ACPI 4538tables 4539was not set correctly. Alexey Starikovskiy, Bob Moore. 4540 4541Example Code and Data Size: These are the sizes for the OS-independent 4542acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4543debug version of the code includes the debug output trace mechanism and 4544has a 4545much larger code and data size. 4546 4547 Previous Release: 4548 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 4549 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 4550 Current Release: 4551 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 4552 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 4553 45542) iASL Compiler/Disassembler and Tools: 4555 4556iASL: Implement limited typechecking for values returned from predefined 4557control methods. The type of any returned static (unnamed) object is now 4558validated. For example, Return(1). ACPICA BZ 786. 4559 4560iASL: Fixed a predefined name object verification regression. Fixes a 4561problem 4562introduced in version 20100304. An error is incorrectly generated if a 4563predefined name is declared as a static named object with a value defined 4564using the keywords "Zero", "One", or "Ones". Lin Ming. 4565 4566iASL: Added Windows 7 support for the -g option (get local ACPI tables) 4567by 4568reducing the requested registry access rights. ACPICA BZ 842. 4569 4570Disassembler: fixed a possible fault when generating External() 4571statements. 4572Introduced in commit ae7d6fd: Properly handle externals with parent- 4573prefix 4574(carat). Fixes a string length allocation calculation. Lin Ming. 4575 4576---------------------------------------- 457704 March 2010. Summary of changes for version 20100304: 4578 45791) ACPI CA Core Subsystem: 4580 4581Fixed a possible problem with the AML Mutex handling function 4582AcpiExReleaseMutex where the function could fault under the very rare 4583condition when the interpreter has blocked, the interpreter lock is 4584released, 4585the interpreter is then reentered via the same thread, and attempts to 4586acquire an AML mutex that was previously acquired. FreeBSD report 140979. 4587Lin 4588Ming. 4589 4590Implemented additional configuration support for the AML "Debug Object". 4591Output from the debug object can now be enabled via a global variable, 4592AcpiGbl_EnableAmlDebugObject. This will assist with remote machine 4593debugging. 4594This debug output is now available in the release version of ACPICA 4595instead 4596of just the debug version. Also, the entire debug output module can now 4597be 4598configured out of the ACPICA build if desired. One new file added, 4599executer/exdebug.c. Lin Ming, Bob Moore. 4600 4601Added header support for the ACPI MCHI table (Management Controller Host 4602Interface Table). This table was added in ACPI 4.0, but the defining 4603document 4604has only recently become available. 4605 4606Standardized output of integer values for ACPICA warnings/errors. Always 4607use 46080x prefix for hex output, always use %u for unsigned integer decimal 4609output. 4610Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 4611400 4612invocations.) These invocations were converted from the original 4613ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 4614 4615Example Code and Data Size: These are the sizes for the OS-independent 4616acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4617debug version of the code includes the debug output trace mechanism and 4618has a 4619much larger code and data size. 4620 4621 Previous Release: 4622 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 4623 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 4624 Current Release: 4625 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 4626 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 4627 46282) iASL Compiler/Disassembler and Tools: 4629 4630iASL: Implemented typechecking support for static (non-control method) 4631predefined named objects that are declared with the Name() operator. For 4632example, the type of this object is now validated to be of type Integer: 4633Name(_BBN, 1). This change migrates the compiler to using the core 4634predefined 4635name table instead of maintaining a local version. Added a new file, 4636aslpredef.c. ACPICA BZ 832. 4637 4638Disassembler: Added support for the ACPI 4.0 MCHI table. 4639 4640---------------------------------------- 464121 January 2010. Summary of changes for version 20100121: 4642 46431) ACPI CA Core Subsystem: 4644 4645Added the 2010 copyright to all module headers and signons. This affects 4646virtually every file in the ACPICA core subsystem, the iASL compiler, the 4647tools/utilities, and the test suites. 4648 4649Implemented a change to the AcpiGetDevices interface to eliminate 4650unnecessary 4651invocations of the _STA method. In the case where a specific _HID is 4652requested, do not run _STA until a _HID match is found. This eliminates 4653potentially dozens of _STA calls during a search for a particular 4654device/HID, 4655which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 4656 4657Implemented an additional repair for predefined method return values. 4658Attempt 4659to repair unexpected NULL elements within returned Package objects. 4660Create 4661an 4662Integer of value zero, a NULL String, or a zero-length Buffer as 4663appropriate. 4664ACPICA BZ 818. Lin Ming, Bob Moore. 4665 4666Removed the obsolete ACPI_INTEGER data type. This type was introduced as 4667the 4668code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 4669(with 467064-bit AML integers). It is now obsolete and this change removes it from 4671the 4672ACPICA code base, replaced by UINT64. The original typedef has been 4673retained 4674for now for compatibility with existing device driver code. ACPICA BZ 4675824. 4676 4677Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field 4678in 4679the parse tree object. 4680 4681Added additional warning options for the gcc-4 generation. Updated the 4682source 4683accordingly. This includes some code restructuring to eliminate 4684unreachable 4685code, elimination of some gotos, elimination of unused return values, 4686some 4687additional casting, and removal of redundant declarations. 4688 4689Example Code and Data Size: These are the sizes for the OS-independent 4690acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4691debug version of the code includes the debug output trace mechanism and 4692has a 4693much larger code and data size. 4694 4695 Previous Release: 4696 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 4697 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 4698 Current Release: 4699 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 4700 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 4701 47022) iASL Compiler/Disassembler and Tools: 4703 4704No functional changes for this release. 4705 4706---------------------------------------- 470714 December 2009. Summary of changes for version 20091214: 4708 47091) ACPI CA Core Subsystem: 4710 4711Enhanced automatic data type conversions for predefined name repairs. 4712This 4713change expands the automatic repairs/conversions for predefined name 4714return 4715values to make Integers, Strings, and Buffers fully interchangeable. 4716Also, 4717a 4718Buffer can be converted to a Package of Integers if necessary. The 4719nsrepair.c 4720module was completely restructured. Lin Ming, Bob Moore. 4721 4722Implemented automatic removal of null package elements during predefined 4723name 4724repairs. This change will automatically remove embedded and trailing NULL 4725package elements from returned package objects that are defined to 4726contain 4727a 4728variable number of sub-packages. The driver is then presented with a 4729package 4730with no null elements to deal with. ACPICA BZ 819. 4731 4732Implemented a repair for the predefined _FDE and _GTM names. The expected 4733return value for both names is a Buffer of 5 DWORDs. This repair fixes 4734two 4735possible problems (both seen in the field), where a package of integers 4736is 4737returned, or a buffer of BYTEs is returned. With assistance from Jung-uk 4738Kim. 4739 4740Implemented additional module-level code support. This change will 4741properly 4742execute module-level code that is not at the root of the namespace (under 4743a 4744Device object, etc.). Now executes the code within the current scope 4745instead 4746of the root. ACPICA BZ 762. Lin Ming. 4747 4748Fixed possible mutex acquisition errors when running _REG methods. Fixes 4749a 4750problem where mutex errors can occur when running a _REG method that is 4751in 4752the same scope as a method-defined operation region or an operation 4753region 4754under a module-level IF block. This type of code is rare, so the problem 4755has 4756not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 4757 4758Fixed a possible memory leak during module-level code execution. An 4759object 4760could be leaked for each block of executed module-level code if the 4761interpreter slack mode is enabled This change deletes any implicitly 4762returned 4763object from the module-level code block. Lin Ming. 4764 4765Removed messages for successful predefined repair(s). The repair 4766mechanism 4767was considered too wordy. Now, messages are only unconditionally emitted 4768if 4769the return object cannot be repaired. Existing messages for successful 4770repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 4771827. 4772 4773Example Code and Data Size: These are the sizes for the OS-independent 4774acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4775debug version of the code includes the debug output trace mechanism and 4776has a 4777much larger code and data size. 4778 4779 Previous Release: 4780 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 4781 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 4782 Current Release: 4783 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 4784 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 4785 47862) iASL Compiler/Disassembler and Tools: 4787 4788iASL: Fixed a regression introduced in 20091112 where intermediate .SRC 4789files 4790were no longer automatically removed at the termination of the compile. 4791 4792acpiexec: Implemented the -f option to specify default region fill value. 4793This option specifies the value used to initialize buffers that simulate 4794operation regions. Default value is zero. Useful for debugging problems 4795that 4796depend on a specific initial value for a region or field. 4797 4798---------------------------------------- 479912 November 2009. Summary of changes for version 20091112: 4800 48011) ACPI CA Core Subsystem: 4802 4803Implemented a post-order callback to AcpiWalkNamespace. The existing 4804interface only has a pre-order callback. This change adds an additional 4805parameter for a post-order callback which will be more useful for bus 4806scans. 4807ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 4808 4809Modified the behavior of the operation region memory mapping cache for 4810SystemMemory. Ensure that the memory mappings created for operation 4811regions 4812do not cross 4K page boundaries. Crossing a page boundary while mapping 4813regions can cause kernel warnings on some hosts if the pages have 4814different 4815attributes. Such regions are probably BIOS bugs, and this is the 4816workaround. 4817Linux BZ 14445. Lin Ming. 4818 4819Implemented an automatic repair for predefined methods that must return 4820sorted lists. This change will repair (by sorting) packages returned by 4821_ALR, 4822_PSS, and _TSS. Drivers can now assume that the packages are correctly 4823sorted 4824and do not contain NULL package elements. Adds one new file, 4825namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 4826 4827Fixed a possible fault during predefined name validation if a return 4828Package 4829object contains NULL elements. Also adds a warning if a NULL element is 4830followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement 4831may 4832include repair or removal of all such NULL elements where possible. 4833 4834Implemented additional module-level executable AML code support. This 4835change 4836will execute module-level code that is not at the root of the namespace 4837(under a Device object, etc.) at table load time. Module-level executable 4838AML 4839code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 4840 4841Implemented a new internal function to create Integer objects. This 4842function 4843simplifies miscellaneous object creation code. ACPICA BZ 823. 4844 4845Reduced the severity of predefined repair messages, Warning to Info. 4846Since 4847the object was successfully repaired, a warning is too severe. Reduced to 4848an 4849info message for now. These messages may eventually be changed to debug- 4850only. 4851ACPICA BZ 812. 4852 4853Example Code and Data Size: These are the sizes for the OS-independent 4854acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4855debug version of the code includes the debug output trace mechanism and 4856has a 4857much larger code and data size. 4858 4859 Previous Release: 4860 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 4861 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 4862 Current Release: 4863 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 4864 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 4865 48662) iASL Compiler/Disassembler and Tools: 4867 4868iASL: Implemented Switch() with While(1) so that Break works correctly. 4869This 4870change correctly implements the Switch operator with a surrounding 4871While(1) 4872so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 4873 4874iASL: Added a message if a package initializer list is shorter than 4875package 4876length. Adds a new remark for a Package() declaration if an initializer 4877list 4878exists, but is shorter than the declared length of the package. Although 4879technically legal, this is probably a coding error and it is seen in the 4880field. ACPICA BZ 815. Lin Ming, Bob Moore. 4881 4882iASL: Fixed a problem where the compiler could fault after the maximum 4883number 4884of errors was reached (200). 4885 4886acpixtract: Fixed a possible warning for pointer cast if the compiler 4887warning 4888level set very high. 4889 4890---------------------------------------- 489113 October 2009. Summary of changes for version 20091013: 4892 48931) ACPI CA Core Subsystem: 4894 4895Fixed a problem where an Operation Region _REG method could be executed 4896more 4897than once. If a custom address space handler is installed by the host 4898before 4899the "initialize operation regions" phase of the ACPICA initialization, 4900any 4901_REG methods for that address space could be executed twice. This change 4902fixes the problem. ACPICA BZ 427. Lin Ming. 4903 4904Fixed a possible memory leak for the Scope() ASL operator. When the exact 4905invocation of "Scope(\)" is executed (change scope to root), one internal 4906operand object was leaked. Lin Ming. 4907 4908Implemented a run-time repair for the _MAT predefined method. If the _MAT 4909return value is defined as a Field object in the AML, and the field 4910size is less than or equal to the default width of an integer (32 or 491164),_MAT 4912can incorrectly return an Integer instead of a Buffer. ACPICA now 4913automatically repairs this problem. ACPICA BZ 810. 4914 4915Implemented a run-time repair for the _BIF and _BIX predefined methods. 4916The 4917"OEM Information" field is often incorrectly returned as an Integer with 4918value zero if the field is not supported by the platform. This is due to 4919an 4920ambiguity in the ACPI specification. The field should always be a string. 4921ACPICA now automatically repairs this problem by returning a NULL string 4922within the returned Package. ACPICA BZ 807. 4923 4924Example Code and Data Size: These are the sizes for the OS-independent 4925acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4926debug version of the code includes the debug output trace mechanism and 4927has a 4928much larger code and data size. 4929 4930 Previous Release: 4931 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 4932 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 4933 Current Release: 4934 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 4935 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 4936 49372) iASL Compiler/Disassembler and Tools: 4938 4939Disassembler: Fixed a problem where references to external symbols that 4940contained one or more parent-prefixes (carats) were not handled 4941correctly, 4942possibly causing a fault. ACPICA BZ 806. Lin Ming. 4943 4944Disassembler: Restructured the code so that all functions that handle 4945external symbols are in a single module. One new file is added, 4946common/dmextern.c. 4947 4948AML Debugger: Added a max count argument for the Batch command (which 4949executes multiple predefined methods within the namespace.) 4950 4951iASL: Updated the compiler documentation (User Reference.) Available at 4952http://www.acpica.org/documentation/. ACPICA BZ 750. 4953 4954AcpiXtract: Updated for Lint and other formatting changes. Close all open 4955files. 4956 4957---------------------------------------- 495803 September 2009. Summary of changes for version 20090903: 4959 49601) ACPI CA Core Subsystem: 4961 4962For Windows Vista compatibility, added the automatic execution of an _INI 4963method located at the namespace root (\_INI). This method is executed at 4964table load time. This support is in addition to the automatic execution 4965of 4966\_SB._INI. Lin Ming. 4967 4968Fixed a possible memory leak in the interpreter for AML package objects 4969if 4970the package initializer list is longer than the defined size of the 4971package. 4972This apparently can only happen if the BIOS changes the package size on 4973the 4974fly (seen in a _PSS object), as ASL compilers do not allow this. The 4975interpreter will truncate the package to the defined size (and issue an 4976error 4977message), but previously could leave the extra objects undeleted if they 4978were 4979pre-created during the argument processing (such is the case if the 4980package 4981consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 4982 4983Fixed a problem seen when a Buffer or String is stored to itself via ASL. 4984This has been reported in the field. Previously, ACPICA would zero out 4985the 4986buffer/string. Now, the operation is treated as a noop. Provides Windows 4987compatibility. ACPICA BZ 803. Lin Ming. 4988 4989Removed an extraneous error message for ASL constructs of the form 4990Store(LocalX,LocalX) when LocalX is uninitialized. These curious 4991statements 4992are seen in many BIOSs and are once again treated as NOOPs and no error 4993is 4994emitted when they are encountered. ACPICA BZ 785. 4995 4996Fixed an extraneous warning message if a _DSM reserved method returns a 4997Package object. _DSM can return any type of object, so validation on the 4998return type cannot be performed. ACPICA BZ 802. 4999 5000Example Code and Data Size: These are the sizes for the OS-independent 5001acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5002debug version of the code includes the debug output trace mechanism and 5003has a 5004much larger code and data size. 5005 5006 Previous Release: 5007 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 5008 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 5009 Current Release: 5010 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 5011 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 5012 50132) iASL Compiler/Disassembler and Tools: 5014 5015iASL: Fixed a problem with the use of the Alias operator and Resource 5016Templates. The correct alias is now constructed and no error is emitted. 5017ACPICA BZ 738. 5018 5019iASL: Implemented the -I option to specify additional search directories 5020for 5021include files. Allows multiple additional search paths for include files. 5022Directories are searched in the order specified on the command line 5023(after 5024the local directory is searched.) ACPICA BZ 800. 5025 5026iASL: Fixed a problem where the full pathname for include files was not 5027emitted for warnings/errors. This caused the IDE support to not work 5028properly. ACPICA BZ 765. 5029 5030iASL: Implemented the -@ option to specify a Windows-style response file 5031containing additional command line options. ACPICA BZ 801. 5032 5033AcpiExec: Added support to load multiple AML files simultaneously (such 5034as 5035a 5036DSDT and multiple SSDTs). Also added support for wildcards within the AML 5037pathname. These features allow all machine tables to be easily loaded and 5038debugged together. ACPICA BZ 804. 5039 5040Disassembler: Added missing support for disassembly of HEST table Error 5041Bank 5042subtables. 5043 5044---------------------------------------- 504530 July 2009. Summary of changes for version 20090730: 5046 5047The ACPI 4.0 implementation for ACPICA is complete with this release. 5048 50491) ACPI CA Core Subsystem: 5050 5051ACPI 4.0: Added header file support for all new and changed ACPI tables. 5052Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are 5053new 5054for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, 5055BERT, 5056EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. 5057There 5058have been some ACPI 4.0 changes to other existing tables. Split the large 5059actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 5060 5061ACPI 4.0: Implemented predefined name validation for all new names. There 5062are 506331 new names in ACPI 4.0. The predefined validation module was split into 5064two 5065files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 5066 5067Implemented support for so-called "module-level executable code". This is 5068executable AML code that exists outside of any control method and is 5069intended 5070to be executed at table load time. Although illegal since ACPI 2.0, this 5071type 5072of code still exists and is apparently still being created. Blocks of 5073this 5074code are now detected and executed as intended. Currently, the code 5075blocks 5076must exist under either an If, Else, or While construct; these are the 5077typical cases seen in the field. ACPICA BZ 762. Lin Ming. 5078 5079Implemented an automatic dynamic repair for predefined names that return 5080nested Package objects. This applies to predefined names that are defined 5081to 5082return a variable-length Package of sub-packages. If the number of sub- 5083packages is one, BIOS code is occasionally seen that creates a simple 5084single 5085package with no sub-packages. This code attempts to fix the problem by 5086wrapping a new package object around the existing package. These methods 5087can 5088be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA 5089BZ 5090790. 5091 5092Fixed a regression introduced in 20090625 for the AcpiGetDevices 5093interface. 5094The _HID/_CID matching was broken and no longer matched IDs correctly. 5095ACPICA 5096BZ 793. 5097 5098Fixed a problem with AcpiReset where the reset would silently fail if the 5099register was one of the protected I/O ports. AcpiReset now bypasses the 5100port 5101validation mechanism. This may eventually be driven into the 5102AcpiRead/Write 5103interfaces. 5104 5105Fixed a regression related to the recent update of the AcpiRead/Write 5106interfaces. A sleep/suspend could fail if the optional PM2 Control 5107register 5108does not exist during an attempt to write the Bus Master Arbitration bit. 5109(However, some hosts already delete the code that writes this bit, and 5110the 5111code may in fact be obsolete at this date.) ACPICA BZ 799. 5112 5113Fixed a problem where AcpiTerminate could fault if inadvertently called 5114twice 5115in succession. ACPICA BZ 795. 5116 5117Example Code and Data Size: These are the sizes for the OS-independent 5118acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5119debug version of the code includes the debug output trace mechanism and 5120has a 5121much larger code and data size. 5122 5123 Previous Release: 5124 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 5125 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 5126 Current Release: 5127 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 5128 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 5129 51302) iASL Compiler/Disassembler and Tools: 5131 5132ACPI 4.0: Implemented disassembler support for all new ACPI tables and 5133changes to existing tables. ACPICA BZ 775. 5134 5135---------------------------------------- 513625 June 2009. Summary of changes for version 20090625: 5137 5138The ACPI 4.0 Specification was released on June 16 and is available at 5139www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 5140continue for the next few releases. 5141 51421) ACPI CA Core Subsystem: 5143 5144ACPI 4.0: Implemented interpreter support for the IPMI operation region 5145address space. Includes support for bi-directional data buffers and an 5146IPMI 5147address space handler (to be installed by an IPMI device driver.) ACPICA 5148BZ 5149773. Lin Ming. 5150 5151ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. 5152Includes 5153support in both the header files and the disassembler. 5154 5155Completed a major update for the AcpiGetObjectInfo external interface. 5156Changes include: 5157 - Support for variable, unlimited length HID, UID, and CID strings. 5158 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, 5159etc.) 5160 - Call the _SxW power methods on behalf of a device object. 5161 - Determine if a device is a PCI root bridge. 5162 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 5163These changes will require an update to all callers of this interface. 5164See 5165the updated ACPICA Programmer Reference for details. One new source file 5166has 5167been added - utilities/utids.c. ACPICA BZ 368, 780. 5168 5169Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 5170transfers. The Value parameter has been extended from 32 bits to 64 bits 5171in 5172order to support new ACPI 4.0 tables. These changes will require an 5173update 5174to 5175all callers of these interfaces. See the ACPICA Programmer Reference for 5176details. ACPICA BZ 768. 5177 5178Fixed several problems with AcpiAttachData. The handler was not invoked 5179when 5180the host node was deleted. The data sub-object was not automatically 5181deleted 5182when the host node was deleted. The interface to the handler had an 5183unused 5184parameter, this was removed. ACPICA BZ 778. 5185 5186Enhanced the function that dumps ACPI table headers. All non-printable 5187characters in the string fields are now replaced with '?' (Signature, 5188OemId, 5189OemTableId, and CompilerId.) ACPI tables with non-printable characters in 5190these fields are occasionally seen in the field. ACPICA BZ 788. 5191 5192Fixed a problem with predefined method repair code where the code that 5193attempts to repair/convert an object of incorrect type is only executed 5194on 5195the first time the predefined method is called. The mechanism that 5196disables 5197warnings on subsequent calls was interfering with the repair mechanism. 5198ACPICA BZ 781. 5199 5200Fixed a possible memory leak in the predefined validation/repair code 5201when 5202a 5203buffer is automatically converted to an expected string object. 5204 5205Removed obsolete 16-bit files from the distribution and from the current 5206git 5207tree head. ACPICA BZ 776. 5208 5209Example Code and Data Size: These are the sizes for the OS-independent 5210acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5211debug version of the code includes the debug output trace mechanism and 5212has a 5213much larger code and data size. 5214 5215 Previous Release: 5216 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 5217 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 5218 Current Release: 5219 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 5220 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 5221 52222) iASL Compiler/Disassembler and Tools: 5223 5224ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 5225operation region keyword. ACPICA BZ 771, 772. Lin Ming. 5226 5227ACPI 4.0: iASL - implemented compile-time validation support for all new 5228predefined names and control methods (31 total). ACPICA BZ 769. 5229 5230---------------------------------------- 523121 May 2009. Summary of changes for version 20090521: 5232 52331) ACPI CA Core Subsystem: 5234 5235Disabled the preservation of the SCI enable bit in the PM1 control 5236register. 5237The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification 5238to 5239be 5240a "preserved" bit - "OSPM always preserves this bit position", section 52414.7.3.2.1. However, some machines fail if this bit is in fact preserved 5242because the bit needs to be explicitly set by the OS as a workaround. No 5243machines fail if the bit is not preserved. Therefore, ACPICA no longer 5244attempts to preserve this bit. 5245 5246Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 5247incorrectly formed _PRT package could cause a fault. Added validation to 5248ensure that each package element is actually a sub-package. 5249 5250Implemented a new interface to install or override a single control 5251method, 5252AcpiInstallMethod. This interface is useful when debugging in order to 5253repair 5254an existing method or to install a missing method without having to 5255override 5256the entire ACPI table. See the ACPICA Programmer Reference for use and 5257examples. Lin Ming, Bob Moore. 5258 5259Fixed several reference count issues with the DdbHandle object that is 5260created from a Load or LoadTable operator. Prevent premature deletion of 5261the 5262object. Also, mark the object as invalid once the table has been 5263unloaded. 5264This is needed because the handle itself may not be deleted after the 5265table 5266unload, depending on whether it has been stored in a named object by the 5267caller. Lin Ming. 5268 5269Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 5270mutexes of the same sync level are acquired but then not released in 5271strict 5272opposite order, the internally maintained Current Sync Level becomes 5273confused 5274and can cause subsequent execution errors. ACPICA BZ 471. 5275 5276Changed the allowable release order for ASL mutex objects. The ACPI 4.0 5277specification has been changed to make the SyncLevel for mutex objects 5278more 5279useful. When releasing a mutex, the SyncLevel of the mutex must now be 5280the 5281same as the current sync level. This makes more sense than the previous 5282rule 5283(SyncLevel less than or equal). This change updates the code to match the 5284specification. 5285 5286Fixed a problem with the local version of the AcpiOsPurgeCache function. 5287The 5288(local) cache must be locked during all cache object deletions. Andrew 5289Baumann. 5290 5291Updated the Load operator to use operation region interfaces. This 5292replaces 5293direct memory mapping with region access calls. Now, all region accesses 5294go 5295through the installed region handler as they should. 5296 5297Simplified and optimized the NsGetNextNode function. Reduced parameter 5298count 5299and reduced code for this frequently used function. 5300 5301Example Code and Data Size: These are the sizes for the OS-independent 5302acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5303debug version of the code includes the debug output trace mechanism and 5304has a 5305much larger code and data size. 5306 5307 Previous Release: 5308 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 5309 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 5310 Current Release: 5311 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 5312 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 5313 53142) iASL Compiler/Disassembler and Tools: 5315 5316Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some 5317problems 5318with sub-table disassembly and handling invalid sub-tables. Attempt 5319recovery 5320after an invalid sub-table ID. 5321 5322---------------------------------------- 532322 April 2009. Summary of changes for version 20090422: 5324 53251) ACPI CA Core Subsystem: 5326 5327Fixed a compatibility issue with the recently released I/O port 5328protection 5329mechanism. For windows compatibility, 1) On a port protection violation, 5330simply ignore the request and do not return an exception (allow the 5331control 5332method to continue execution.) 2) If only part of the request overlaps a 5333protected port, read/write the individual ports that are not protected. 5334Linux 5335BZ 13036. Lin Ming 5336 5337Enhanced the execution of the ASL/AML BreakPoint operator so that it 5338actually 5339breaks into the AML debugger if the debugger is present. This matches the 5340ACPI-defined behavior. 5341 5342Fixed several possible warnings related to the use of the configurable 5343ACPI_THREAD_ID. This type can now be configured as either an integer or a 5344pointer with no warnings. Also fixes several warnings in printf-like 5345statements for the 64-bit build when the type is configured as a pointer. 5346ACPICA BZ 766, 767. 5347 5348Fixed a number of possible warnings when compiling with gcc 4+ (depending 5349on 5350warning options.) Examples include printf formats, aliasing, unused 5351globals, 5352missing prototypes, missing switch default statements, use of non-ANSI 5353library functions, use of non-ANSI constructs. See generate/unix/Makefile 5354for 5355a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 5356 5357Example Code and Data Size: These are the sizes for the OS-independent 5358acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5359debug version of the code includes the debug output trace mechanism and 5360has a 5361much larger code and data size. 5362 5363 Previous Release: 5364 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 5365 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 5366 Current Release: 5367 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 5368 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 5369 53702) iASL Compiler/Disassembler and Tools: 5371 5372iASL: Fixed a generation warning from Bison 2.3 and fixed several 5373warnings 5374on 5375the 64-bit build. 5376 5377iASL: Fixed a problem where the Unix/Linux versions of the compiler could 5378not 5379correctly digest Windows/DOS formatted files (with CR/LF). 5380 5381iASL: Added a new option for "quiet mode" (-va) that produces only the 5382compilation summary, not individual errors and warnings. Useful for large 5383batch compilations. 5384 5385AcpiExec: Implemented a new option (-z) to enable a forced 5386semaphore/mutex 5387timeout that can be used to detect hang conditions during execution of 5388AML 5389code (includes both internal semaphores and AML-defined mutexes and 5390events.) 5391 5392Added new makefiles for the generation of acpica in a generic unix-like 5393environment. These makefiles are intended to generate the acpica tools 5394and 5395utilities from the original acpica git source tree structure. 5396 5397Test Suites: Updated and cleaned up the documentation files. Updated the 5398copyrights to 2009, affecting all source files. Use the new version of 5399iASL 5400with quiet mode. Increased the number of available semaphores in the 5401Windows 5402OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, 5403added 5404an alternate implementation of the semaphore timeout to allow aslts to 5405execute fully on Cygwin. 5406 5407---------------------------------------- 540820 March 2009. Summary of changes for version 20090320: 5409 54101) ACPI CA Core Subsystem: 5411 5412Fixed a possible race condition between AcpiWalkNamespace and dynamic 5413table 5414unloads. Added a reader/writer locking mechanism to allow multiple 5415concurrent 5416namespace walks (readers), but block a dynamic table unload until it can 5417gain 5418exclusive write access to the namespace. This fixes a problem where a 5419table 5420unload could (possibly catastrophically) delete the portion of the 5421namespace 5422that is currently being examined by a walk. Adds a new file, utlock.c, 5423that 5424implements the reader/writer lock mechanism. ACPICA BZ 749. 5425 5426Fixed a regression introduced in version 20090220 where a change to the 5427FADT 5428handling could cause the ACPICA subsystem to access non-existent I/O 5429ports. 5430 5431Modified the handling of FADT register and table (FACS/DSDT) addresses. 5432The 5433FADT can contain both 32-bit and 64-bit versions of these addresses. 5434Previously, the 64-bit versions were favored, meaning that if both 32 and 543564 5436versions were valid, but not equal, the 64-bit version was used. This was 5437found to cause some machines to fail. Now, in this case, the 32-bit 5438version 5439is used instead. This now matches the Windows behavior. 5440 5441Implemented a new mechanism to protect certain I/O ports. Provides 5442Microsoft 5443compatibility and protects the standard PC I/O ports from access via AML 5444code. Adds a new file, hwvalid.c 5445 5446Fixed a possible extraneous warning message from the FADT support. The 5447message warns of a 32/64 length mismatch between the legacy and GAS 5448definitions for a register. 5449 5450Removed the obsolete AcpiOsValidateAddress OSL interface. This interface 5451is 5452made obsolete by the port protection mechanism above. It was previously 5453used 5454to validate the entire address range of an operation region, which could 5455be 5456incorrect if the range included illegal ports, but fields within the 5457operation region did not actually access those ports. Validation is now 5458performed on a per-field basis instead of the entire region. 5459 5460Modified the handling of the PM1 Status Register ignored bit (bit 11.) 5461Ignored bits must be "preserved" according to the ACPI spec. Usually, 5462this 5463means a read/modify/write when writing to the register. However, for 5464status 5465registers, writing a one means clear the event. Writing a zero means 5466preserve 5467the event (do not clear.) This behavior is clarified in the ACPI 4.0 5468spec, 5469and the ACPICA code now simply always writes a zero to the ignored bit. 5470 5471Modified the handling of ignored bits for the PM1 A/B Control Registers. 5472As 5473per the ACPI specification, for the control registers, preserve 5474(read/modify/write) all bits that are defined as either reserved or 5475ignored. 5476 5477Updated the handling of write-only bits in the PM1 A/B Control Registers. 5478When reading the register, zero the write-only bits as per the ACPI spec. 5479ACPICA BZ 443. Lin Ming. 5480 5481Removed "Linux" from the list of supported _OSI strings. Linux no longer 5482wants to reply true to this request. The Windows strings are the only 5483paths 5484through the AML that are tested and known to work properly. 5485 5486 Previous Release: 5487 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 5488 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 5489 Current Release: 5490 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 5491 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 5492 54932) iASL Compiler/Disassembler and Tools: 5494 5495Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c 5496and 5497aetables.c 5498 5499---------------------------------------- 550020 February 2009. Summary of changes for version 20090220: 5501 55021) ACPI CA Core Subsystem: 5503 5504Optimized the ACPI register locking. Removed locking for reads from the 5505ACPI 5506bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock 5507is 5508not required when reading the single-bit registers. The 5509AcpiGetRegisterUnlocked function is no longer needed and has been 5510removed. 5511This will improve performance for reads on these registers. ACPICA BZ 5512760. 5513 5514Fixed the parameter validation for AcpiRead/Write. Now return 5515AE_BAD_PARAMETER if the input register pointer is null, and 5516AE_BAD_ADDRESS 5517if 5518the register has an address of zero. Previously, these cases simply 5519returned 5520AE_OK. For optional registers such as PM1B status/enable/control, the 5521caller 5522should check for a valid register address before calling. ACPICA BZ 748. 5523 5524Renamed the external ACPI bit register access functions. Renamed 5525AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 5526functions. The new names are AcpiReadBitRegister and 5527AcpiWriteBitRegister. 5528Also, restructured the code for these functions by simplifying the code 5529path 5530and condensing duplicate code to reduce code size. 5531 5532Added new functions to transparently handle the possibly split PM1 A/B 5533registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two 5534functions 5535now handle the split registers for PM1 Status, Enable, and Control. 5536ACPICA 5537BZ 5538746. 5539 5540Added a function to handle the PM1 control registers, 5541AcpiHwWritePm1Control. 5542This function writes both of the PM1 control registers (A/B). These 5543registers 5544are different than the PM1 A/B status and enable registers in that 5545different 5546values can be written to the A/B registers. Most notably, the SLP_TYP 5547bits 5548can be different, as per the values returned from the _Sx predefined 5549methods. 5550 5551Removed an extra register write within AcpiHwClearAcpiStatus. This 5552function 5553was writing an optional PM1B status register twice. The existing call to 5554the 5555low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 5556A/B 5557register. ACPICA BZ 751. 5558 5559Split out the PM1 Status registers from the FADT. Added new globals for 5560these 5561registers (A/B), similar to the way the PM1 Enable registers are handled. 5562Instead of overloading the FADT Event Register blocks. This makes the 5563code 5564clearer and less prone to error. 5565 5566Fixed the warning message for when the platform contains too many ACPI 5567tables 5568for the default size of the global root table data structure. The 5569calculation 5570for the truncation value was incorrect. 5571 5572Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 5573obsolete macro, since it is now a simple reference to ->common.type. 5574There 5575were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 5576 5577Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 5578TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 5579simply SLEEP_TYPE. ACPICA BZ 754. 5580 5581Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 5582function is only needed on 64-bit host operating systems and is thus not 5583included for 32-bit hosts. 5584 5585Debug output: print the input and result for invocations of the _OSI 5586reserved 5587control method via the ACPI_LV_INFO debug level. Also, reduced some of 5588the 5589verbosity of this debug level. Len Brown. 5590 5591Example Code and Data Size: These are the sizes for the OS-independent 5592acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5593debug version of the code includes the debug output trace mechanism and 5594has a 5595much larger code and data size. 5596 5597 Previous Release: 5598 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 5599 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 5600 Current Release: 5601 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 5602 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 5603 56042) iASL Compiler/Disassembler and Tools: 5605 5606Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 5607various legal performance profiles. 5608 5609---------------------------------------- 561023 January 2009. Summary of changes for version 20090123: 5611 56121) ACPI CA Core Subsystem: 5613 5614Added the 2009 copyright to all module headers and signons. This affects 5615virtually every file in the ACPICA core subsystem, the iASL compiler, and 5616the tools/utilities. 5617 5618Implemented a change to allow the host to override any ACPI table, 5619including 5620dynamically loaded tables. Previously, only the DSDT could be replaced by 5621the 5622host. With this change, the AcpiOsTableOverride interface is called for 5623each 5624table found in the RSDT/XSDT during ACPICA initialization, and also 5625whenever 5626a table is dynamically loaded via the AML Load operator. 5627 5628Updated FADT flag definitions, especially the Boot Architecture flags. 5629 5630Debugger: For the Find command, automatically pad the input ACPI name 5631with 5632underscores if the name is shorter than 4 characters. This enables a 5633match 5634with the actual namespace entry which is itself padded with underscores. 5635 5636Example Code and Data Size: These are the sizes for the OS-independent 5637acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5638debug version of the code includes the debug output trace mechanism and 5639has a 5640much larger code and data size. 5641 5642 Previous Release: 5643 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 5644 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 5645 Current Release: 5646 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 5647 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 5648 56492) iASL Compiler/Disassembler and Tools: 5650 5651Fix build error under Bison-2.4. 5652 5653Dissasembler: Enhanced FADT support. Added decoding of the Boot 5654Architecture 5655flags. Now decode all flags, regardless of the FADT version. Flag output 5656includes the FADT version which first defined each flag. 5657 5658The iASL -g option now dumps the RSDT to a file (in addition to the FADT 5659and 5660DSDT). Windows only. 5661 5662---------------------------------------- 566304 December 2008. Summary of changes for version 20081204: 5664 56651) ACPI CA Core Subsystem: 5666 5667The ACPICA Programmer Reference has been completely updated and revamped 5668for 5669this release. This includes updates to the external interfaces, OSL 5670interfaces, the overview sections, and the debugger reference. 5671 5672Several new ACPICA interfaces have been implemented and documented in the 5673programmer reference: 5674AcpiReset - Writes the reset value to the FADT-defined reset register. 5675AcpiDisableAllGpes - Disable all available GPEs. 5676AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 5677AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 5678AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 5679AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 5680AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 5681 5682Most of the public ACPI hardware-related interfaces have been moved to a 5683new 5684file, components/hardware/hwxface.c 5685 5686Enhanced the FADT parsing and low-level ACPI register access: The ACPI 5687register lengths within the FADT are now used, and the low level ACPI 5688register access no longer hardcodes the ACPI register lengths. Given that 5689there may be some risk in actually trusting the FADT register lengths, a 5690run- 5691time option was added to fall back to the default hardcoded lengths if 5692the 5693FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 5694option is set to true for now, and a warning is issued if a suspicious 5695FADT 5696register length is overridden with the default value. 5697 5698Fixed a reference count issue in NsRepairObject. This problem was 5699introduced 5700in version 20081031 as part of a fix to repair Buffer objects within 5701Packages. Lin Ming. 5702 5703Added semaphore support to the Linux/Unix application OS-services layer 5704(OSL). ACPICA BZ 448. Lin Ming. 5705 5706Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes 5707will 5708be implemented in the OSL, or will binary semaphores be used instead. 5709 5710Example Code and Data Size: These are the sizes for the OS-independent 5711acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5712debug version of the code includes the debug output trace mechanism and 5713has a 5714much larger code and data size. 5715 5716 Previous Release: 5717 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 5718 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 5719 Current Release: 5720 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 5721 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 5722 57232) iASL Compiler/Disassembler and Tools: 5724 5725iASL: Completed the '-e' option to include additional ACPI tables in 5726order 5727to 5728aid with disassembly and External statement generation. ACPICA BZ 742. 5729Lin 5730Ming. 5731 5732iASL: Removed the "named object in while loop" error. The compiler cannot 5733determine how many times a loop will execute. ACPICA BZ 730. 5734 5735Disassembler: Implemented support for FADT revision 2 (MS extension). 5736ACPICA 5737BZ 743. 5738 5739Disassembler: Updates for several ACPI data tables (HEST, EINJ, and 5740MCFG). 5741 5742---------------------------------------- 574331 October 2008. Summary of changes for version 20081031: 5744 57451) ACPI CA Core Subsystem: 5746 5747Restructured the ACPICA header files into public/private. acpi.h now 5748includes 5749only the "public" acpica headers. All other acpica headers are "private" 5750and 5751should not be included by acpica users. One new file, accommon.h is used 5752to 5753include the commonly used private headers for acpica code generation. 5754Future 5755plans include moving all private headers to a new subdirectory. 5756 5757Implemented an automatic Buffer->String return value conversion for 5758predefined ACPI methods. For these methods (such as _BIF), added 5759automatic 5760conversion for return objects that are required to be a String, but a 5761Buffer 5762was found instead. This can happen when reading string battery data from 5763an 5764operation region, because it used to be difficult to convert the data 5765from 5766buffer to string from within the ASL. Ensures that the host OS is 5767provided 5768with a valid null-terminated string. Linux BZ 11822. 5769 5770Updated the FACS waking vector interfaces. Split 5771AcpiSetFirmwareWakingVector 5772into two: one for the 32-bit vector, another for the 64-bit vector. This 5773is 5774required because the host OS must setup the wake much differently for 5775each 5776vector (real vs. protected mode, etc.) and the interface itself should 5777not 5778be 5779deciding which vector to use. Also, eliminated the 5780GetFirmwareWakingVector 5781interface, as it served no purpose (only the firmware reads the vector, 5782OS 5783only writes the vector.) ACPICA BZ 731. 5784 5785Implemented a mechanism to escape infinite AML While() loops. Added a 5786loop 5787counter to force exit from AML While loops if the count becomes too 5788large. 5789This can occur in poorly written AML when the hardware does not respond 5790within a while loop and the loop does not implement a timeout. The 5791maximum 5792loop count is configurable. A new exception code is returned when a loop 5793is 5794broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 5795 5796Optimized the execution of AML While loops. Previously, a control state 5797object was allocated and freed for each execution of the loop. The 5798optimization is to simply reuse the control state for each iteration. 5799This 5800speeds up the raw loop execution time by about 5%. 5801 5802Enhanced the implicit return mechanism. For Windows compatibility, return 5803an 5804implicit integer of value zero for methods that contain no executable 5805code. 5806Such methods are seen in the field as stubs (presumably), and can cause 5807drivers to fail if they expect a return value. Lin Ming. 5808 5809Allow multiple backslashes as root prefixes in namepaths. In a fully 5810qualified namepath, allow multiple backslash prefixes. This can happen 5811(and 5812is seen in the field) because of the use of a double-backslash in strings 5813(since backslash is the escape character) causing confusion. ACPICA BZ 5814739 5815Lin Ming. 5816 5817Emit a warning if two different FACS or DSDT tables are discovered in the 5818FADT. Checks if there are two valid but different addresses for the FACS 5819and 5820DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 5821 5822Consolidated the method argument count validation code. Merged the code 5823that 5824validates control method argument counts into the predefined validation 5825module. Eliminates possible multiple warnings for incorrect argument 5826counts. 5827 5828Implemented ACPICA example code. Includes code for ACPICA initialization, 5829handler installation, and calling a control method. Available at 5830source/tools/examples. 5831 5832Added a global pointer for FACS table to simplify internal FACS access. 5833Use 5834the global pointer instead of using AcpiGetTableByIndex for each FACS 5835access. 5836This simplifies the code for the Global Lock and the Firmware Waking 5837Vector(s). 5838 5839Example Code and Data Size: These are the sizes for the OS-independent 5840acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5841debug version of the code includes the debug output trace mechanism and 5842has a 5843much larger code and data size. 5844 5845 Previous Release: 5846 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 5847 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 5848 Current Release: 5849 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 5850 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 5851 58522) iASL Compiler/Disassembler and Tools: 5853 5854iASL: Improved disassembly of external method calls. Added the -e option 5855to 5856allow the inclusion of additional ACPI tables to help with the 5857disassembly 5858of 5859method invocations and the generation of external declarations during the 5860disassembly. Certain external method invocations cannot be disassembled 5861properly without the actual declaration of the method. Use the -e option 5862to 5863include the table where the external method(s) are actually declared. 5864Most 5865useful for disassembling SSDTs that make method calls back to the master 5866DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl 5867-d 5868-e dsdt.aml ssdt1.aml 5869 5870iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 5871problem where the use of an alias within a namepath would result in a not 5872found error or cause the compiler to fault. Also now allows forward 5873references from the Alias operator itself. ACPICA BZ 738. 5874 5875---------------------------------------- 587626 September 2008. Summary of changes for version 20080926: 5877 58781) ACPI CA Core Subsystem: 5879 5880Designed and implemented a mechanism to validate predefined ACPI methods 5881and 5882objects. This code validates the predefined ACPI objects (objects whose 5883names 5884start with underscore) that appear in the namespace, at the time they are 5885evaluated. The argument count and the type of the returned object are 5886validated against the ACPI specification. The purpose of this validation 5887is 5888to detect problems with the BIOS-implemented predefined ACPI objects 5889before 5890the results are returned to the ACPI-related drivers. Future enhancements 5891may 5892include actual repair of incorrect return objects where possible. Two new 5893files are nspredef.c and acpredef.h. 5894 5895Fixed a fault in the AML parser if a memory allocation fails during the 5896Op 5897completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 5898 5899Fixed an issue with implicit return compatibility. This change improves 5900the 5901implicit return mechanism to be more compatible with the MS interpreter. 5902Lin 5903Ming, ACPICA BZ 349. 5904 5905Implemented support for zero-length buffer-to-string conversions. Allow 5906zero 5907length strings during interpreter buffer-to-string conversions. For 5908example, 5909during the ToDecimalString and ToHexString operators, as well as implicit 5910conversions. Fiodor Suietov, ACPICA BZ 585. 5911 5912Fixed two possible memory leaks in the error exit paths of 5913AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions 5914are 5915similar in that they use a stack of state objects in order to eliminate 5916recursion. The stack must be fully unwound and deallocated if an error 5917occurs. Lin Ming. ACPICA BZ 383. 5918 5919Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the 5920global 5921ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 5922Moore ACPICA BZ 442. 5923 5924Removed the obsolete version number in module headers. Removed the 5925"$Revision" number that appeared in each module header. This version 5926number 5927was useful under SourceSafe and CVS, but has no meaning under git. It is 5928not 5929only incorrect, it could also be misleading. 5930 5931Example Code and Data Size: These are the sizes for the OS-independent 5932acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5933debug version of the code includes the debug output trace mechanism and 5934has a 5935much larger code and data size. 5936 5937 Previous Release: 5938 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 5939 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 5940 Current Release: 5941 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 5942 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 5943 5944---------------------------------------- 594529 August 2008. Summary of changes for version 20080829: 5946 59471) ACPI CA Core Subsystem: 5948 5949Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 5950Reference. Changes include the elimination of cheating on the Object 5951field 5952for the DdbHandle subtype, addition of a reference class field to 5953differentiate the various reference types (instead of an AML opcode), and 5954the 5955cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 5956 5957Reduce an error to a warning for an incorrect method argument count. 5958Previously aborted with an error if too few arguments were passed to a 5959control method via the external ACPICA interface. Now issue a warning 5960instead 5961and continue. Handles the case where the method inadvertently declares 5962too 5963many arguments, but does not actually use the extra ones. Applies mainly 5964to 5965the predefined methods. Lin Ming. Linux BZ 11032. 5966 5967Disallow the evaluation of named object types with no intrinsic value. 5968Return 5969AE_TYPE for objects that have no value and therefore evaluation is 5970undefined: 5971Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation 5972of 5973these types were allowed, but an exception would be generated at some 5974point 5975during the evaluation. Now, the error is generated up front. 5976 5977Fixed a possible memory leak in the AcpiNsGetExternalPathname function 5978(nsnames.c). Fixes a leak in the error exit path. 5979 5980Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These 5981debug 5982levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and 5983ACPI_EXCEPTION 5984interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 5985ACPI_LV_EVENTS. 5986 5987Removed obsolete and/or unused exception codes from the acexcep.h header. 5988There is the possibility that certain device drivers may be affected if 5989they 5990use any of these exceptions. 5991 5992The ACPICA documentation has been added to the public git source tree, 5993under 5994acpica/documents. Included are the ACPICA programmer reference, the iASL 5995compiler reference, and the changes.txt release logfile. 5996 5997Example Code and Data Size: These are the sizes for the OS-independent 5998acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5999debug version of the code includes the debug output trace mechanism and 6000has a 6001much larger code and data size. 6002 6003 Previous Release: 6004 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6005 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 6006 Current Release: 6007 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6008 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 6009 60102) iASL Compiler/Disassembler and Tools: 6011 6012Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 6013defines _SCP with 3 arguments. Previous versions defined it with only 1 6014argument. iASL now allows both definitions. 6015 6016iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for 6017zero- 6018length subtables when disassembling ACPI tables. Also fixed a couple of 6019errors where a full 16-bit table type field was not extracted from the 6020input 6021properly. 6022 6023acpisrc: Improve comment counting mechanism for generating source code 6024statistics. Count first and last lines of multi-line comments as 6025whitespace, 6026not comment lines. Handle Linux legal header in addition to standard 6027acpica 6028header. 6029 6030---------------------------------------- 6031 603229 July 2008. Summary of changes for version 20080729: 6033 60341) ACPI CA Core Subsystem: 6035 6036Fix a possible deadlock in the GPE dispatch. Remove call to 6037AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will 6038attempt 6039to acquire the GPE lock but can deadlock since the GPE lock is already 6040held 6041at dispatch time. This code was introduced in version 20060831 as a 6042response 6043to Linux BZ 6881 and has since been removed from Linux. 6044 6045Add a function to dereference returned reference objects. Examines the 6046return 6047object from a call to AcpiEvaluateObject. Any Index or RefOf references 6048are 6049automatically dereferenced in an attempt to return something useful 6050(these 6051reference types cannot be converted into an external ACPI_OBJECT.) 6052Provides 6053MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 6054 6055x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 6056subtables for the MADT and one new subtable for the SRAT. Includes 6057disassembler and AcpiSrc support. Data from the Intel 64 Architecture 6058x2APIC 6059Specification, June 2008. 6060 6061Additional error checking for pathname utilities. Add error check after 6062all 6063calls to AcpiNsGetPathnameLength. Add status return from 6064AcpiNsBuildExternalPath and check after all calls. Add parameter 6065validation 6066to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 6067 6068Return status from the global init function AcpiUtGlobalInitialize. This 6069is 6070used by both the kernel subsystem and the utilities such as iASL 6071compiler. 6072The function could possibly fail when the caches are initialized. Yang 6073Yi. 6074 6075Add a function to decode reference object types to strings. Created for 6076improved error messages. 6077 6078Improve object conversion error messages. Better error messages during 6079object 6080conversion from internal to the external ACPI_OBJECT. Used for external 6081calls 6082to AcpiEvaluateObject. 6083 6084Example Code and Data Size: These are the sizes for the OS-independent 6085acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6086debug version of the code includes the debug output trace mechanism and 6087has a 6088much larger code and data size. 6089 6090 Previous Release: 6091 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 6092 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 6093 Current Release: 6094 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6095 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 6096 60972) iASL Compiler/Disassembler and Tools: 6098 6099Debugger: fix a possible hang when evaluating non-methods. Fixes a 6100problem 6101introduced in version 20080701. If the object being evaluated (via 6102execute 6103command) is not a method, the debugger can hang while trying to obtain 6104non- 6105existent parameters. 6106 6107iASL: relax error for using reserved "_T_x" identifiers. These names can 6108appear in a disassembled ASL file if they were emitted by the original 6109compiler. Instead of issuing an error or warning and forcing the user to 6110manually change these names, issue a remark instead. 6111 6112iASL: error if named object created in while loop. Emit an error if any 6113named 6114object is created within a While loop. If allowed, this code will 6115generate 6116a 6117run-time error on the second iteration of the loop when an attempt is 6118made 6119to 6120create the same named object twice. ACPICA bugzilla 730. 6121 6122iASL: Support absolute pathnames for include files. Add support for 6123absolute 6124pathnames within the Include operator. previously, only relative 6125pathnames 6126were supported. 6127 6128iASL: Enforce minimum 1 interrupt in interrupt macro and Resource 6129Descriptor. 6130The ACPI spec requires one interrupt minimum. BZ 423 6131 6132iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 6133Handles the case for the Interrupt Resource Descriptor where 6134the ResourceSource argument is omitted but ResourceSourceIndex 6135is present. Now leave room for the Index. BZ 426 6136 6137iASL: Prevent error message if CondRefOf target does not exist. Fixes 6138cases 6139where an error message is emitted if the target does not exist. BZ 516 6140 6141iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 6142(get ACPI tables on Windows). This was apparently broken in version 614320070919. 6144 6145AcpiXtract: Handle EOF while extracting data. Correctly handle the case 6146where 6147the EOF happens immediately after the last table in the input file. Print 6148completion message. Previously, no message was displayed in this case. 6149 6150---------------------------------------- 615101 July 2008. Summary of changes for version 20080701: 6152 61530) Git source tree / acpica.org 6154 6155Fixed a problem where a git-clone from http would not transfer the entire 6156source tree. 6157 61581) ACPI CA Core Subsystem: 6159 6160Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 6161enable bit. Now performs a read-change-write of the enable register 6162instead 6163of simply writing out the cached enable mask. This will prevent 6164inadvertent 6165enabling of GPEs if a rogue GPE is received during initialization (before 6166GPE 6167handlers are installed.) 6168 6169Implemented a copy for dynamically loaded tables. Previously, dynamically 6170loaded tables were simply mapped - but on some machines this memory is 6171corrupted after suspend. Now copy the table to a local buffer. For the 6172OpRegion case, added checksum verify. Use the table length from the table 6173header, not the region length. For the Buffer case, use the table length 6174also. Dennis Noordsij, Bob Moore. BZ 10734 6175 6176Fixed a problem where the same ACPI table could not be dynamically loaded 6177and 6178unloaded more than once. Without this change, a table cannot be loaded 6179again 6180once it has been loaded/unloaded one time. The current mechanism does not 6181unregister a table upon an unload. During a load, if the same table is 6182found, 6183this no longer returns an exception. BZ 722 6184 6185Fixed a problem where the wrong descriptor length was calculated for the 6186EndTag descriptor in 64-bit mode. The "minimal" descriptors such as 6187EndTag 6188are calculated as 12 bytes long, but the actual length in the internal 6189descriptor is 16 because of the round-up to 8 on the 64-bit build. 6190Reported 6191by Linn Crosetto. BZ 728 6192 6193Fixed a possible memory leak in the Unload operator. The DdbHandle 6194returned 6195by Load() did not have its reference count decremented during unload, 6196leading 6197to a memory leak. Lin Ming. BZ 727 6198 6199Fixed a possible memory leak when deleting thermal/processor objects. Any 6200associated notify handlers (and objects) were not being deleted. Fiodor 6201Suietov. BZ 506 6202 6203Fixed the ordering of the ASCII names in the global mutex table to match 6204the 6205actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug 6206only. 6207Vegard Nossum. BZ 726 6208 6209Enhanced the AcpiGetObjectInfo interface to return the number of required 6210arguments if the object is a control method. Added this call to the 6211debugger 6212so the proper number of default arguments are passed to a method. This 6213prevents a warning when executing methods from AcpiExec. 6214 6215Added a check for an invalid handle in AcpiGetObjectInfo. Return 6216AE_BAD_PARAMETER if input handle is invalid. BZ 474 6217 6218Fixed an extraneous warning from exconfig.c on the 64-bit build. 6219 6220Example Code and Data Size: These are the sizes for the OS-independent 6221acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6222debug version of the code includes the debug output trace mechanism and 6223has a 6224much larger code and data size. 6225 6226 Previous Release: 6227 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 6228 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 6229 Current Release: 6230 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 6231 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 6232 62332) iASL Compiler/Disassembler and Tools: 6234 6235iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 6236resource descriptor names. 6237 6238iASL: Detect invalid ASCII characters in input (windows version). Removed 6239the 6240"-CF" flag from the flex compile, enables correct detection of non-ASCII 6241characters in the input. BZ 441 6242 6243iASL: Eliminate warning when result of LoadTable is not used. Eliminate 6244the 6245"result of operation not used" warning when the DDB handle returned from 6246LoadTable is not used. The warning is not needed. BZ 590 6247 6248AcpiExec: Add support for dynamic table load/unload. Now calls _CFG 6249method 6250to 6251pass address of table to the AML. Added option to disable OpRegion 6252simulation 6253to allow creation of an OpRegion with a real address that was passed to 6254_CFG. 6255All of this allows testing of the Load and Unload operators from 6256AcpiExec. 6257 6258Debugger: update tables command for unloaded tables. Handle unloaded 6259tables 6260and use the standard table header output routine. 6261 6262---------------------------------------- 626309 June 2008. Summary of changes for version 20080609: 6264 62651) ACPI CA Core Subsystem: 6266 6267Implemented a workaround for reversed _PRT entries. A significant number 6268of 6269BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 6270change dynamically detects and repairs this problem. Provides 6271compatibility 6272with MS ACPI. BZ 6859 6273 6274Simplified the internal ACPI hardware interfaces to eliminate the locking 6275flag parameter from Register Read/Write. Added a new external interface, 6276AcpiGetRegisterUnlocked. 6277 6278Fixed a problem where the invocation of a GPE control method could hang. 6279This 6280was a regression introduced in 20080514. The new method argument count 6281validation mechanism can enter an infinite loop when a GPE method is 6282dispatched. Problem fixed by removing the obsolete code that passed GPE 6283block 6284information to the notify handler via the control method parameter 6285pointer. 6286 6287Fixed a problem where the _SST execution status was incorrectly returned 6288to 6289the caller of AcpiEnterSleepStatePrep. This was a regression introduced 6290in 629120080514. _SST is optional and a NOT_FOUND exception should never be 6292returned. BZ 716 6293 6294Fixed a problem where a deleted object could be accessed from within the 6295AML 6296parser. This was a regression introduced in version 20080123 as a fix for 6297the 6298Unload operator. Lin Ming. BZ 10669 6299 6300Cleaned up the debug operand dump mechanism. Eliminated unnecessary 6301operands 6302and eliminated the use of a negative index in a loop. Operands are now 6303displayed in the correct order, not backwards. This also fixes a 6304regression 6305introduced in 20080514 on 64-bit systems where the elimination of 6306ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 6307715 6308 6309Fixed a possible memory leak in EvPciConfigRegionSetup where the error 6310exit 6311path did not delete a locally allocated structure. 6312 6313Updated definitions for the DMAR and SRAT tables to synchronize with the 6314current specifications. Includes disassembler support. 6315 6316Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 6317loop termination value was used. Loop terminated on iteration early, 6318missing 6319one mutex. Linn Crosetto 6320 6321Example Code and Data Size: These are the sizes for the OS-independent 6322acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6323debug version of the code includes the debug output trace mechanism and 6324has a 6325much larger code and data size. 6326 6327 Previous Release: 6328 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 6329 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 6330 Current Release: 6331 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 6332 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 6333 63342) iASL Compiler/Disassembler and Tools: 6335 6336Disassembler: Implemented support for EisaId() within _CID objects. Now 6337disassemble integer _CID objects back to EisaId invocations, including 6338multiple integers within _CID packages. Includes single-step support for 6339debugger also. 6340 6341Disassembler: Added support for DMAR and SRAT table definition changes. 6342 6343---------------------------------------- 634414 May 2008. Summary of changes for version 20080514: 6345 63461) ACPI CA Core Subsystem: 6347 6348Fixed a problem where GPEs were enabled too early during the ACPICA 6349initialization. This could lead to "handler not installed" errors on some 6350machines. Moved GPE enable until after _REG/_STA/_INI methods are run. 6351This 6352ensures that all operation regions and devices throughout the namespace 6353have 6354been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 6355 6356Implemented a change to the enter sleep code. Moved execution of the _GTS 6357method to just before setting sleep enable bit. The execution was moved 6358from 6359AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 6360immediately before the SLP_EN bit is set, as per the ACPI specification. 6361Luming Yu, BZ 1653. 6362 6363Implemented a fix to disable unknown GPEs (2nd version). Now always 6364disable 6365the GPE, even if ACPICA thinks that that it is already disabled. It is 6366possible that the AML or some other code has enabled the GPE unbeknownst 6367to 6368the ACPICA code. 6369 6370Fixed a problem with the Field operator where zero-length fields would 6371return 6372an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length 6373ASL 6374field declarations in Field(), BankField(), and IndexField(). BZ 10606. 6375 6376Implemented a fix for the Load operator, now load the table at the 6377namespace 6378root. This reverts a change introduced in version 20071019. The table is 6379now 6380loaded at the namespace root even though this goes against the ACPI 6381specification. This provides compatibility with other ACPI 6382implementations. 6383The ACPI specification will be updated to reflect this in ACPI 4.0. Lin 6384Ming. 6385 6386Fixed a problem where ACPICA would not Load() tables with unusual 6387signatures. 6388Now ignore ACPI table signature for Load() operator. Only "SSDT" is 6389acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 6390Therefore, signature validation is worthless. Apparently MS ACPI accepts 6391such 6392signatures, ACPICA must be compatible. BZ 10454. 6393 6394Fixed a possible negative array index in AcpiUtValidateException. Added 6395NULL 6396fields to the exception string arrays to eliminate a -1 subtraction on 6397the 6398SubStatus field. 6399 6400Updated the debug tracking macros to reduce overall code and data size. 6401Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 6402instead of pointers to static strings. Jan Beulich and Bob Moore. 6403 6404Implemented argument count checking in control method invocation via 6405AcpiEvaluateObject. Now emit an error if too few arguments, warning if 6406too 6407many. This applies only to extern programmatic control method execution, 6408not 6409method-to-method calls within the AML. Lin Ming. 6410 6411Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is 6412no 6413longer needed, especially with the removal of 16-bit support. It was 6414replaced 6415mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 6416bit 6417on 641832/64-bit platforms is required. 6419 6420Added the C const qualifier for appropriate string constants -- mostly 6421MODULE_NAME and printf format strings. Jan Beulich. 6422 6423Example Code and Data Size: These are the sizes for the OS-independent 6424acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6425debug version of the code includes the debug output trace mechanism and 6426has a 6427much larger code and data size. 6428 6429 Previous Release: 6430 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 6431 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 6432 Current Release: 6433 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 6434 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 6435 64362) iASL Compiler/Disassembler and Tools: 6437 6438Implemented ACPI table revision ID validation in the disassembler. Zero 6439is 6440always invalid. For DSDTs, the ID controls the interpreter integer width. 64411 6442means 32-bit and this is unusual. 2 or greater is 64-bit. 6443 6444---------------------------------------- 644521 March 2008. Summary of changes for version 20080321: 6446 64471) ACPI CA Core Subsystem: 6448 6449Implemented an additional change to the GPE support in order to suppress 6450spurious or stray GPEs. The AcpiEvDisableGpe function will now 6451permanently 6452disable incoming GPEs that are neither enabled nor disabled -- meaning 6453that 6454the GPE is unknown to the system. This should prevent future interrupt 6455floods 6456from that GPE. BZ 6217 (Zhang Rui) 6457 6458Fixed a problem where NULL package elements were not returned to the 6459AcpiEvaluateObject interface correctly. The element was simply ignored 6460instead of returning a NULL ACPI_OBJECT package element, potentially 6461causing 6462a buffer overflow and/or confusing the caller who expected a fixed number 6463of 6464elements. BZ 10132 (Lin Ming, Bob Moore) 6465 6466Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, 6467Dword, 6468Qword), Field, BankField, and IndexField operators when invoked from 6469inside 6470an executing control method. In this case, these operators created 6471namespace 6472nodes that were incorrectly left marked as permanent nodes instead of 6473temporary nodes. This could cause a problem if there is race condition 6474between an exiting control method and a running namespace walk. (Reported 6475by 6476Linn Crosetto) 6477 6478Fixed a problem where the CreateField and CreateXXXField operators would 6479incorrectly allow duplicate names (the name of the field) with no 6480exception 6481generated. 6482 6483Implemented several changes for Notify handling. Added support for new 6484Notify 6485values (ACPI 2.0+) and improved the Notify debug output. Notify on 6486PowerResource objects is no longer allowed, as per the ACPI 6487specification. 6488(Bob Moore, Zhang Rui) 6489 6490All Reference Objects returned via the AcpiEvaluateObject interface are 6491now 6492marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved 6493for 6494NULL objects - either NULL package elements or unresolved named 6495references. 6496 6497Fixed a problem where an extraneous debug message was produced for 6498package 6499objects (when debugging enabled). The message "Package List length larger 6500than NumElements count" is now produced in the correct case, and is now 6501an 6502error message rather than a debug message. Added a debug message for the 6503opposite case, where NumElements is larger than the Package List (the 6504package 6505will be padded out with NULL elements as per the ACPI spec.) 6506 6507Implemented several improvements for the output of the ASL "Debug" object 6508to 6509clarify and keep all data for a given object on one output line. 6510 6511Fixed two size calculation issues with the variable-length Start 6512Dependent 6513resource descriptor. 6514 6515Example Code and Data Size: These are the sizes for the OS-independent 6516acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6517debug version of the code includes the debug output trace mechanism and 6518has 6519a much larger code and data size. 6520 6521 Previous Release: 6522 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 6523 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 6524 Current Release: 6525 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 6526 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 6527 65282) iASL Compiler/Disassembler and Tools: 6529 6530Fixed a problem with the use of the Switch operator where execution of 6531the 6532containing method by multiple concurrent threads could cause an 6533AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 6534actual Switch opcode, it must be simulated with local named temporary 6535variables and if/else pairs. The solution chosen was to mark any method 6536that 6537uses Switch as Serialized, thus preventing multiple thread entries. BZ 6538469. 6539 6540---------------------------------------- 654113 February 2008. Summary of changes for version 20080213: 6542 65431) ACPI CA Core Subsystem: 6544 6545Implemented another MS compatibility design change for GPE/Notify 6546handling. 6547GPEs are now cleared/enabled asynchronously to allow all pending notifies 6548to 6549complete first. It is expected that the OSL will queue the enable request 6550behind all pending notify requests (may require changes to the local host 6551OSL 6552in AcpiOsExecute). Alexey Starikovskiy. 6553 6554Fixed a problem where buffer and package objects passed as arguments to a 6555control method via the external AcpiEvaluateObject interface could cause 6556an 6557AE_AML_INTERNAL exception depending on the order and type of operators 6558executed by the target control method. 6559 6560Fixed a problem where resource descriptor size optimization could cause a 6561problem when a _CRS resource template is passed to a _SRS method. The 6562_SRS 6563resource template must use the same descriptors (with the same size) as 6564returned from _CRS. This change affects the following resource 6565descriptors: 6566IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 65679487) 6568 6569Fixed a problem where a CopyObject to RegionField, BankField, and 6570IndexField 6571objects did not perform an implicit conversion as it should. These types 6572must 6573retain their initial type permanently as per the ACPI specification. 6574However, 6575a CopyObject to all other object types should not perform an implicit 6576conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 6577 6578Fixed a problem with the AcpiGetDevices interface where the mechanism to 6579match device CIDs did not examine the entire list of available CIDs, but 6580instead aborted on the first non-matching CID. Andrew Patterson. 6581 6582Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro 6583was 6584inadvertently changed to return a 16-bit value instead of a 32-bit value, 6585truncating the upper dword of a 64-bit value. This macro is only used to 6586display debug output, so no incorrect calculations were made. Also, 6587reimplemented the macro so that a 64-bit shift is not performed by 6588inefficient compilers. 6589 6590Added missing va_end statements that should correspond with each va_start 6591statement. 6592 6593Example Code and Data Size: These are the sizes for the OS-independent 6594acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6595debug version of the code includes the debug output trace mechanism and 6596has 6597a much larger code and data size. 6598 6599 Previous Release: 6600 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 6601 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 6602 Current Release: 6603 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 6604 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 6605 66062) iASL Compiler/Disassembler and Tools: 6607 6608Implemented full disassembler support for the following new ACPI tables: 6609BERT, EINJ, and ERST. Implemented partial disassembler support for the 6610complicated HEST table. These tables support the Windows Hardware Error 6611Architecture (WHEA). 6612 6613---------------------------------------- 661423 January 2008. Summary of changes for version 20080123: 6615 66161) ACPI CA Core Subsystem: 6617 6618Added the 2008 copyright to all module headers and signons. This affects 6619virtually every file in the ACPICA core subsystem, the iASL compiler, and 6620the tools/utilities. 6621 6622Fixed a problem with the SizeOf operator when used with Package and 6623Buffer 6624objects. These objects have deferred execution for some arguments, and 6625the 6626execution is now completed before the SizeOf is executed. This problem 6627caused 6628unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) 6629BZ 66309558 6631 6632Implemented an enhancement to the interpreter "slack mode". In the 6633absence 6634of 6635an explicit return or an implicitly returned object from the last 6636executed 6637opcode, a control method will now implicitly return an integer of value 0 6638for 6639Microsoft compatibility. (Lin Ming) BZ 392 6640 6641Fixed a problem with the Load operator where an exception was not 6642returned 6643in 6644the case where the table is already loaded. (Lin Ming) BZ 463 6645 6646Implemented support for the use of DDBHandles as an Indexed Reference, as 6647per 6648the ACPI spec. (Lin Ming) BZ 486 6649 6650Implemented support for UserTerm (Method invocation) for the Unload 6651operator 6652as per the ACPI spec. (Lin Ming) BZ 580 6653 6654Fixed a problem with the LoadTable operator where the OemId and 6655OemTableId 6656input strings could cause unexpected failures if they were shorter than 6657the 6658maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 6659 6660Implemented support for UserTerm (Method invocation) for the Unload 6661operator 6662as per the ACPI spec. (Lin Ming) BZ 580 6663 6664Implemented header file support for new ACPI tables - BERT, ERST, EINJ, 6665HEST, 6666IBFT, UEFI, WDAT. Disassembler support is forthcoming. 6667 6668Example Code and Data Size: These are the sizes for the OS-independent 6669acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6670debug version of the code includes the debug output trace mechanism and 6671has 6672a much larger code and data size. 6673 6674 Previous Release: 6675 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 6676 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 6677 Current Release: 6678 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 6679 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 6680 66812) iASL Compiler/Disassembler and Tools: 6682 6683Implemented support in the disassembler for checksum validation on 6684incoming 6685binary DSDTs and SSDTs. If incorrect, a message is displayed within the 6686table 6687header dump at the start of the disassembly. 6688 6689Implemented additional debugging information in the namespace listing 6690file 6691created during compilation. In addition to the namespace hierarchy, the 6692full 6693pathname to each namespace object is displayed. 6694 6695Fixed a problem with the disassembler where invalid ACPI tables could 6696cause 6697faults or infinite loops. 6698 6699Fixed an unexpected parse error when using the optional "parameter types" 6700list in a control method declaration. (Lin Ming) BZ 397 6701 6702Fixed a problem where two External declarations with the same name did 6703not 6704cause an error (Lin Ming) BZ 509 6705 6706Implemented support for full TermArgs (adding Argx, Localx and method 6707invocation) for the ParameterData parameter to the LoadTable operator. 6708(Lin 6709Ming) BZ 583,587 6710 6711---------------------------------------- 671219 December 2007. Summary of changes for version 20071219: 6713 67141) ACPI CA Core Subsystem: 6715 6716Implemented full support for deferred execution for the TermArg string 6717arguments for DataTableRegion. This enables forward references and full 6718operand resolution for the three string arguments. Similar to 6719OperationRegion 6720deferred argument execution.) Lin Ming. BZ 430 6721 6722Implemented full argument resolution support for the BankValue argument 6723to 6724BankField. Previously, only constants were supported, now any TermArg may 6725be 6726used. Lin Ming BZ 387, 393 6727 6728Fixed a problem with AcpiGetDevices where the search of a branch of the 6729device tree could be terminated prematurely. In accordance with the ACPI 6730specification, the search down the current branch is terminated if a 6731device 6732is both not present and not functional (instead of just not present.) 6733Yakui 6734Zhao. 6735 6736Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly 6737if 6738the underlying AML code changed the GPE enable registers. Now, any 6739unknown 6740incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately 6741disabled 6742instead of simply ignored. Rui Zhang. 6743 6744Fixed a problem with Index Fields where the Index register was 6745incorrectly 6746limited to a maximum of 32 bits. Now any size may be used. 6747 6748Fixed a couple memory leaks associated with "implicit return" objects 6749when 6750the AML Interpreter slack mode is enabled. Lin Ming BZ 349 6751 6752Example Code and Data Size: These are the sizes for the OS-independent 6753acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6754debug version of the code includes the debug output trace mechanism and 6755has 6756a much larger code and data size. 6757 6758 Previous Release: 6759 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 6760 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 6761 Current Release: 6762 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 6763 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 6764 6765---------------------------------------- 676614 November 2007. Summary of changes for version 20071114: 6767 67681) ACPI CA Core Subsystem: 6769 6770Implemented event counters for each of the Fixed Events, the ACPI SCI 6771(interrupt) itself, and control methods executed. Named 6772AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. 6773These 6774should be useful for debugging and statistics. 6775 6776Implemented a new external interface, AcpiGetStatistics, to retrieve the 6777contents of the various event counters. Returns the current values for 6778AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 6779AcpiMethodCount. The interface can be expanded in the future if new 6780counters 6781are added. Device drivers should use this interface rather than access 6782the 6783counters directly. 6784 6785Fixed a problem with the FromBCD and ToBCD operators. With some 6786compilers, 6787the ShortDivide function worked incorrectly, causing problems with the 6788BCD 6789functions with large input values. A truncation from 64-bit to 32-bit 6790inadvertently occurred. Internal BZ 435. Lin Ming 6791 6792Fixed a problem with Index references passed as method arguments. 6793References 6794passed as arguments to control methods were dereferenced immediately 6795(before 6796control was passed to the called method). The references are now 6797correctly 6798passed directly to the called method. BZ 5389. Lin Ming 6799 6800Fixed a problem with CopyObject used in conjunction with the Index 6801operator. 6802The reference was incorrectly dereferenced before the copy. The reference 6803is 6804now correctly copied. BZ 5391. Lin Ming 6805 6806Fixed a problem with Control Method references within Package objects. 6807These 6808references are now correctly generated. This completes the package 6809construction overhaul that began in version 20071019. 6810 6811Example Code and Data Size: These are the sizes for the OS-independent 6812acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6813debug version of the code includes the debug output trace mechanism and 6814has 6815a much larger code and data size. 6816 6817 Previous Release: 6818 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 6819 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 6820 Current Release: 6821 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 6822 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 6823 6824 68252) iASL Compiler/Disassembler and Tools: 6826 6827The AcpiExec utility now installs handlers for all of the predefined 6828Operation Region types. New types supported are: PCI_Config, CMOS, and 6829PCIBARTarget. 6830 6831Fixed a problem with the 64-bit version of AcpiExec where the extended 6832(64- 6833bit) address fields for the DSDT and FACS within the FADT were not being 6834used, causing truncation of the upper 32-bits of these addresses. Lin 6835Ming 6836and Bob Moore 6837 6838---------------------------------------- 683919 October 2007. Summary of changes for version 20071019: 6840 68411) ACPI CA Core Subsystem: 6842 6843Fixed a problem with the Alias operator when the target of the alias is a 6844named ASL operator that opens a new scope -- Scope, Device, 6845PowerResource, 6846Processor, and ThermalZone. In these cases, any children of the original 6847operator could not be accessed via the alias, potentially causing 6848unexpected 6849AE_NOT_FOUND exceptions. (BZ 9067) 6850 6851Fixed a problem with the Package operator where all named references were 6852created as object references and left otherwise unresolved. According to 6853the 6854ACPI specification, a Package can only contain Data Objects or references 6855to 6856control methods. The implication is that named references to Data Objects 6857(Integer, Buffer, String, Package, BufferField, Field) should be resolved 6858immediately upon package creation. This is the approach taken with this 6859change. References to all other named objects (Methods, Devices, Scopes, 6860etc.) are all now properly created as reference objects. (BZ 5328) 6861 6862Reverted a change to Notify handling that was introduced in version 686320070508. This version changed the Notify handling from asynchronous to 6864fully synchronous (Device driver Notify handling with respect to the 6865Notify 6866ASL operator). It was found that this change caused more problems than it 6867solved and was removed by most users. 6868 6869Fixed a problem with the Increment and Decrement operators where the type 6870of 6871the target object could be unexpectedly and incorrectly changed. (BZ 353) 6872Lin Ming. 6873 6874Fixed a problem with the Load and LoadTable operators where the table 6875location within the namespace was ignored. Instead, the table was always 6876loaded into the root or current scope. Lin Ming. 6877 6878Fixed a problem with the Load operator when loading a table from a buffer 6879object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 6880 6881Fixed a problem with the Debug object where a store of a DdbHandle 6882reference 6883object to the Debug object could cause a fault. 6884 6885Added a table checksum verification for the Load operator, in the case 6886where 6887the load is from a buffer. (BZ 578). 6888 6889Implemented additional parameter validation for the LoadTable operator. 6890The 6891length of the input strings SignatureString, OemIdString, and OemTableId 6892are 6893now checked for maximum lengths. (BZ 582) Lin Ming. 6894 6895Example Code and Data Size: These are the sizes for the OS-independent 6896acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6897debug version of the code includes the debug output trace mechanism and 6898has 6899a much larger code and data size. 6900 6901 Previous Release: 6902 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 6903 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 6904 Current Release: 6905 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 6906 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 6907 6908 69092) iASL Compiler/Disassembler: 6910 6911Fixed a problem where if a single file was specified and the file did not 6912exist, no error message was emitted. (Introduced with wildcard support in 6913version 20070917.) 6914 6915---------------------------------------- 691619 September 2007. Summary of changes for version 20070919: 6917 69181) ACPI CA Core Subsystem: 6919 6920Designed and implemented new external interfaces to install and remove 6921handlers for ACPI table-related events. Current events that are defined 6922are 6923LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 6924they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 6925AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 6926 6927Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 6928(acpi_serialized option on Linux) could cause some systems to hang during 6929initialization. (Bob Moore) BZ 8171 6930 6931Fixed a problem where objects of certain types (Device, ThermalZone, 6932Processor, PowerResource) can be not found if they are declared and 6933referenced from within the same control method (Lin Ming) BZ 341 6934 6935Example Code and Data Size: These are the sizes for the OS-independent 6936acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6937debug version of the code includes the debug output trace mechanism and 6938has 6939a much larger code and data size. 6940 6941 Previous Release: 6942 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 6943 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 6944 Current Release: 6945 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 6946 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 6947 6948 69492) iASL Compiler/Disassembler: 6950 6951Implemented support to allow multiple files to be compiled/disassembled 6952in 6953a 6954single invocation. This includes command line wildcard support for both 6955the 6956Windows and Unix versions of the compiler. This feature simplifies the 6957disassembly and compilation of multiple ACPI tables in a single 6958directory. 6959 6960---------------------------------------- 696108 May 2007. Summary of changes for version 20070508: 6962 69631) ACPI CA Core Subsystem: 6964 6965Implemented a Microsoft compatibility design change for the handling of 6966the 6967Notify AML operator. Previously, notify handlers were dispatched and 6968executed completely asynchronously in a deferred thread. The new design 6969still executes the notify handlers in a different thread, but the 6970original 6971thread that executed the Notify() now waits at a synchronization point 6972for 6973the notify handler to complete. Some machines depend on a synchronous 6974Notify 6975operator in order to operate correctly. 6976 6977Implemented support to allow Package objects to be passed as method 6978arguments to the external AcpiEvaluateObject interface. Previously, this 6979would return the AE_NOT_IMPLEMENTED exception. This feature had not been 6980implemented since there were no reserved control methods that required it 6981until recently. 6982 6983Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs 6984that 6985contained invalid non-zero values in reserved fields could cause later 6986failures because these fields have meaning in later revisions of the 6987FADT. 6988For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The 6989fields 6990are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 6991 6992Fixed a problem where the Global Lock handle was not properly updated if 6993a 6994thread that acquired the Global Lock via executing AML code then 6995attempted 6996to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by 6997Joe 6998Liu. 6999 7000Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 7001could be corrupted if the interrupt being removed was at the head of the 7002list. Reported by Linn Crosetto. 7003 7004Example Code and Data Size: These are the sizes for the OS-independent 7005acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7006debug version of the code includes the debug output trace mechanism and 7007has 7008a much larger code and data size. 7009 7010 Previous Release: 7011 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7012 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 7013 Current Release: 7014 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 7015 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 7016 7017---------------------------------------- 701820 March 2007. Summary of changes for version 20070320: 7019 70201) ACPI CA Core Subsystem: 7021 7022Implemented a change to the order of interpretation and evaluation of AML 7023operand objects within the AML interpreter. The interpreter now evaluates 7024operands in the order that they appear in the AML stream (and the 7025corresponding ASL code), instead of in the reverse order (after the 7026entire 7027operand list has been parsed). The previous behavior caused several 7028subtle 7029incompatibilities with the Microsoft AML interpreter as well as being 7030somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 7031 7032Implemented a change to the ACPI Global Lock support. All interfaces to 7033the 7034global lock now allow the same thread to acquire the lock multiple times. 7035This affects the AcpiAcquireGlobalLock external interface to the global 7036lock 7037as well as the internal use of the global lock to support AML fields -- a 7038control method that is holding the global lock can now simultaneously 7039access 7040AML fields that require global lock protection. Previously, in both 7041cases, 7042this would have resulted in an AE_ALREADY_ACQUIRED exception. The change 7043to 7044AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 7045Controller. There is no change to the behavior of the AML Acquire 7046operator, 7047as this can already be used to acquire a mutex multiple times by the same 7048thread. BZ 8066. With assistance from Alexey Starikovskiy. 7049 7050Fixed a problem where invalid objects could be referenced in the AML 7051Interpreter after error conditions. During operand evaluation, ensure 7052that 7053the internal "Return Object" field is cleared on error and only valid 7054pointers are stored there. Caused occasional access to deleted objects 7055that 7056resulted in "large reference count" warning messages. Valery Podrezov. 7057 7058Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur 7059on 7060deeply nested control method invocations. BZ 7873, local BZ 487. Valery 7061Podrezov. 7062 7063Fixed an internal problem with the handling of result objects on the 7064interpreter result stack. BZ 7872. Valery Podrezov. 7065 7066Removed obsolete code that handled the case where AML_NAME_OP is the 7067target 7068of a reference (Reference.Opcode). This code was no longer necessary. BZ 70697874. Valery Podrezov. 7070 7071Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This 7072was 7073a 7074remnant from the previously discontinued 16-bit support. 7075 7076Example Code and Data Size: These are the sizes for the OS-independent 7077acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7078debug version of the code includes the debug output trace mechanism and 7079has 7080a much larger code and data size. 7081 7082 Previous Release: 7083 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7084 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7085 Current Release: 7086 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7087 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 7088 7089---------------------------------------- 709026 January 2007. Summary of changes for version 20070126: 7091 70921) ACPI CA Core Subsystem: 7093 7094Added the 2007 copyright to all module headers and signons. This affects 7095virtually every file in the ACPICA core subsystem, the iASL compiler, and 7096the utilities. 7097 7098Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 7099during a table load. A bad pointer was passed in the case where the DSDT 7100is 7101overridden, causing a fault in this case. 7102 7103Example Code and Data Size: These are the sizes for the OS-independent 7104acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7105debug version of the code includes the debug output trace mechanism and 7106has 7107a much larger code and data size. 7108 7109 Previous Release: 7110 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7111 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7112 Current Release: 7113 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7114 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7115 7116---------------------------------------- 711715 December 2006. Summary of changes for version 20061215: 7118 71191) ACPI CA Core Subsystem: 7120 7121Support for 16-bit ACPICA has been completely removed since it is no 7122longer 7123necessary and it clutters the code. All 16-bit macros, types, and 7124conditional compiles have been removed, cleaning up and simplifying the 7125code 7126across the entire subsystem. DOS support is no longer needed since the 7127bootable Linux firmware kit is now available. 7128 7129The handler for the Global Lock is now removed during AcpiTerminate to 7130enable a clean subsystem restart, via the implementation of the 7131AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 7132HP) 7133 7134Implemented enhancements to the multithreading support within the 7135debugger 7136to enable improved multithreading debugging and evaluation of the 7137subsystem. 7138(Valery Podrezov) 7139 7140Debugger: Enhanced the Statistics/Memory command to emit the total 7141(maximum) 7142memory used during the execution, as well as the maximum memory consumed 7143by 7144each of the various object types. (Valery Podrezov) 7145 7146Example Code and Data Size: These are the sizes for the OS-independent 7147acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7148debug version of the code includes the debug output trace mechanism and 7149has 7150a much larger code and data size. 7151 7152 Previous Release: 7153 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 7154 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 7155 Current Release: 7156 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7157 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7158 7159 71602) iASL Compiler/Disassembler and Tools: 7161 7162AcpiExec: Implemented a new option (-m) to display full memory use 7163statistics upon subsystem/program termination. (Valery Podrezov) 7164 7165---------------------------------------- 716609 November 2006. Summary of changes for version 20061109: 7167 71681) ACPI CA Core Subsystem: 7169 7170Optimized the Load ASL operator in the case where the source operand is 7171an 7172operation region. Simply map the operation region memory, instead of 7173performing a bytewise read. (Region must be of type SystemMemory, see 7174below.) 7175 7176Fixed the Load ASL operator for the case where the source operand is a 7177region field. A buffer object is also allowed as the source operand. BZ 7178480 7179 7180Fixed a problem where the Load ASL operator allowed the source operand to 7181be 7182an operation region of any type. It is now restricted to regions of type 7183SystemMemory, as per the ACPI specification. BZ 481 7184 7185Additional cleanup and optimizations for the new Table Manager code. 7186 7187AcpiEnable will now fail if all of the required ACPI tables are not 7188loaded 7189(FADT, FACS, DSDT). BZ 477 7190 7191Added #pragma pack(8/4) to acobject.h to ensure that the structures in 7192this 7193header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 7194manually optimized to be aligned and will not work if it is byte-packed. 7195 7196Example Code and Data Size: These are the sizes for the OS-independent 7197acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7198debug version of the code includes the debug output trace mechanism and 7199has 7200a much larger code and data size. 7201 7202 Previous Release: 7203 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 7204 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 7205 Current Release: 7206 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 7207 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 7208 7209 72102) iASL Compiler/Disassembler and Tools: 7211 7212Fixed a problem where the presence of the _OSI predefined control method 7213within complex expressions could cause an internal compiler error. 7214 7215AcpiExec: Implemented full region support for multiple address spaces. 7216SpaceId is now part of the REGION object. BZ 429 7217 7218---------------------------------------- 721911 October 2006. Summary of changes for version 20061011: 7220 72211) ACPI CA Core Subsystem: 7222 7223Completed an AML interpreter performance enhancement for control method 7224execution. Previously a 2-pass parse/execution, control methods are now 7225completely parsed and executed in a single pass. This improves overall 7226interpreter performance by ~25%, reduces code size, and reduces CPU stack 7227use. (Valery Podrezov + interpreter changes in version 20051202 that 7228eliminated namespace loading during the pass one parse.) 7229 7230Implemented _CID support for PCI Root Bridge detection. If the _HID does 7231not 7232match the predefined PCI Root Bridge IDs, the _CID list (if present) is 7233now 7234obtained and also checked for an ID match. 7235 7236Implemented additional support for the PCI _ADR execution: upsearch until 7237a 7238device scope is found before executing _ADR. This allows PCI_Config 7239operation regions to be declared locally within control methods 7240underneath 7241PCI device objects. 7242 7243Fixed a problem with a possible race condition between threads executing 7244AcpiWalkNamespace and the AML interpreter. This condition was removed by 7245modifying AcpiWalkNamespace to (by default) ignore all temporary 7246namespace 7247entries created during any concurrent control method execution. An 7248additional namespace race condition is known to exist between 7249AcpiWalkNamespace and the Load/Unload ASL operators and is still under 7250investigation. 7251 7252Restructured the AML ParseLoop function, breaking it into several 7253subfunctions in order to reduce CPU stack use and improve 7254maintainability. 7255(Mikhail Kouzmich) 7256 7257AcpiGetHandle: Fix for parameter validation to detect invalid 7258combinations 7259of prefix handle and pathname. BZ 478 7260 7261Example Code and Data Size: These are the sizes for the OS-independent 7262acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7263debug version of the code includes the debug output trace mechanism and 7264has 7265a much larger code and data size. 7266 7267 Previous Release: 7268 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7269 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 7270 Current Release: 7271 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 7272 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 7273 72742) iASL Compiler/Disassembler and Tools: 7275 7276Ported the -g option (get local ACPI tables) to the new ACPICA Table 7277Manager 7278to restore original behavior. 7279 7280---------------------------------------- 728127 September 2006. Summary of changes for version 20060927: 7282 72831) ACPI CA Core Subsystem: 7284 7285Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 7286These functions now use a spinlock for mutual exclusion and the interrupt 7287level indication flag is not needed. 7288 7289Fixed a problem with the Global Lock where the lock could appear to be 7290obtained before it is actually obtained. The global lock semaphore was 7291inadvertently created with one unit instead of zero units. (BZ 464) 7292Fiodor 7293Suietov. 7294 7295Fixed a possible memory leak and fault in AcpiExResolveObjectToValue 7296during 7297a read from a buffer or region field. (BZ 458) Fiodor Suietov. 7298 7299Example Code and Data Size: These are the sizes for the OS-independent 7300acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7301debug version of the code includes the debug output trace mechanism and 7302has 7303a much larger code and data size. 7304 7305 Previous Release: 7306 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7307 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 7308 Current Release: 7309 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7310 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 7311 7312 73132) iASL Compiler/Disassembler and Tools: 7314 7315Fixed a compilation problem with the pre-defined Resource Descriptor 7316field 7317names where an "object does not exist" error could be incorrectly 7318generated 7319if the parent ResourceTemplate pathname places the template within a 7320different namespace scope than the current scope. (BZ 7212) 7321 7322Fixed a problem where the compiler could hang after syntax errors 7323detected 7324in an ElseIf construct. (BZ 453) 7325 7326Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 7327operator. An incorrect output filename was produced when this parameter 7328was 7329a null string (""). Now, the original input filename is used as the AML 7330output filename, with an ".aml" extension. 7331 7332Implemented a generic batch command mode for the AcpiExec utility 7333(execute 7334any AML debugger command) (Valery Podrezov). 7335 7336---------------------------------------- 733712 September 2006. Summary of changes for version 20060912: 7338 73391) ACPI CA Core Subsystem: 7340 7341Enhanced the implementation of the "serialized mode" of the interpreter 7342(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 7343specified, instead of creating a serialization semaphore per control 7344method, 7345the interpreter lock is simply no longer released before a blocking 7346operation during control method execution. This effectively makes the AML 7347Interpreter single-threaded. The overhead of a semaphore per-method is 7348eliminated. 7349 7350Fixed a regression where an error was no longer emitted if a control 7351method 7352attempts to create 2 objects of the same name. This once again returns 7353AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism 7354that 7355will dynamically serialize the control method to possible prevent future 7356errors. (BZ 440) 7357 7358Integrated a fix for a problem with PCI Express HID detection in the PCI 7359Config Space setup procedure. (BZ 7145) 7360 7361Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 7362AcpiHwInitialize function - the FADT registers are now validated when the 7363table is loaded. 7364 7365Added two new warnings during FADT verification - 1) if the FADT is 7366larger 7367than the largest known FADT version, and 2) if there is a mismatch 7368between 7369a 737032-bit block address and the 64-bit X counterpart (when both are non- 7371zero.) 7372 7373Example Code and Data Size: These are the sizes for the OS-independent 7374acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7375debug version of the code includes the debug output trace mechanism and 7376has 7377a much larger code and data size. 7378 7379 Previous Release: 7380 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 7381 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 7382 Current Release: 7383 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7384 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 7385 7386 73872) iASL Compiler/Disassembler and Tools: 7388 7389Fixed a problem with the implementation of the Switch() operator where 7390the 7391temporary variable was declared too close to the actual Switch, instead 7392of 7393at method level. This could cause a problem if the Switch() operator is 7394within a while loop, causing an error on the second iteration. (BZ 460) 7395 7396Disassembler - fix for error emitted for unknown type for target of scope 7397operator. Now, ignore it and continue. 7398 7399Disassembly of an FADT now verifies the input FADT and reports any errors 7400found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 7401 7402Disassembly of raw data buffers with byte initialization data now 7403prefixes 7404each output line with the current buffer offset. 7405 7406Disassembly of ASF! table now includes all variable-length data fields at 7407the end of some of the subtables. 7408 7409The disassembler now emits a comment if a buffer appears to be a 7410ResourceTemplate, but cannot be disassembled as such because the EndTag 7411does 7412not appear at the very end of the buffer. 7413 7414AcpiExec - Added the "-t" command line option to enable the serialized 7415mode 7416of the AML interpreter. 7417 7418---------------------------------------- 741931 August 2006. Summary of changes for version 20060831: 7420 74211) ACPI CA Core Subsystem: 7422 7423Miscellaneous fixes for the Table Manager: 7424- Correctly initialize internal common FADT for all 64-bit "X" fields 7425- Fixed a couple table mapping issues during table load 7426- Fixed a couple alignment issues for IA64 7427- Initialize input array to zero in AcpiInitializeTables 7428- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 7429AcpiGetTableByIndex 7430 7431Change for GPE support: when a "wake" GPE is received, all wake GPEs are 7432now 7433immediately disabled to prevent the waking GPE from firing again and to 7434prevent other wake GPEs from interrupting the wake process. 7435 7436Added the AcpiGpeCount global that tracks the number of processed GPEs, 7437to 7438be used for debugging systems with a large number of ACPI interrupts. 7439 7440Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 7441both the ACPICA headers and the disassembler. 7442 7443Example Code and Data Size: These are the sizes for the OS-independent 7444acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7445debug version of the code includes the debug output trace mechanism and 7446has 7447a much larger code and data size. 7448 7449 Previous Release: 7450 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 7451 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 7452 Current Release: 7453 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 7454 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 7455 7456 74572) iASL Compiler/Disassembler and Tools: 7458 7459Disassembler support for the DMAR ACPI table. 7460 7461---------------------------------------- 746223 August 2006. Summary of changes for version 20060823: 7463 74641) ACPI CA Core Subsystem: 7465 7466The Table Manager component has been completely redesigned and 7467reimplemented. The new design is much simpler, and reduces the overall 7468code 7469and data size of the kernel-resident ACPICA by approximately 5%. Also, it 7470is 7471now possible to obtain the ACPI tables very early during kernel 7472initialization, even before dynamic memory management is initialized. 7473(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 7474 7475Obsolete ACPICA interfaces: 7476 7477- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel 7478init 7479time). 7480- AcpiLoadTable: Not needed. 7481- AcpiUnloadTable: Not needed. 7482 7483New ACPICA interfaces: 7484 7485- AcpiInitializeTables: Must be called before the table manager can be 7486used. 7487- AcpiReallocateRootTable: Used to transfer the root table to dynamically 7488allocated memory after it becomes available. 7489- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI 7490tables 7491in the RSDT/XSDT. 7492 7493Other ACPICA changes: 7494 7495- AcpiGetTableHeader returns the actual mapped table header, not a copy. 7496Use 7497AcpiOsUnmapMemory to free this mapping. 7498- AcpiGetTable returns the actual mapped table. The mapping is managed 7499internally and must not be deleted by the caller. Use of this interface 7500causes no additional dynamic memory allocation. 7501- AcpiFindRootPointer: Support for physical addressing has been 7502eliminated, 7503it appeared to be unused. 7504- The interface to AcpiOsMapMemory has changed to be consistent with the 7505other allocation interfaces. 7506- The interface to AcpiOsGetRootPointer has changed to eliminate 7507unnecessary 7508parameters. 7509- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 751064- 7511bit platforms. Was previously 64 bits on all platforms. 7512- The interface to the ACPI Global Lock acquire/release macros have 7513changed 7514slightly since ACPICA no longer keeps a local copy of the FACS with a 7515constructed pointer to the actual global lock. 7516 7517Porting to the new table manager: 7518 7519- AcpiInitializeTables: Must be called once, and can be called anytime 7520during the OS initialization process. It allows the host to specify an 7521area 7522of memory to be used to store the internal version of the RSDT/XSDT (root 7523table). This allows the host to access ACPI tables before memory 7524management 7525is initialized and running. 7526- AcpiReallocateRootTable: Can be called after memory management is 7527running 7528to copy the root table to a dynamically allocated array, freeing up the 7529scratch memory specified in the call to AcpiInitializeTables. 7530- AcpiSubsystemInitialize: This existing interface is independent of the 7531Table Manager, and does not have to be called before the Table Manager 7532can 7533be used, it only must be called before the rest of ACPICA can be used. 7534- ACPI Tables: Some changes have been made to the names and structure of 7535the 7536actbl.h and actbl1.h header files and may require changes to existing 7537code. 7538For example, bitfields have been completely removed because of their lack 7539of 7540portability across C compilers. 7541- Update interfaces to the Global Lock acquire/release macros if local 7542versions are used. (see acwin.h) 7543 7544Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 7545 7546New files: tbfind.c 7547 7548Example Code and Data Size: These are the sizes for the OS-independent 7549acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7550debug version of the code includes the debug output trace mechanism and 7551has 7552a much larger code and data size. 7553 7554 Previous Release: 7555 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 7556 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 7557 Current Release: 7558 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 7559 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 7560 7561 75622) iASL Compiler/Disassembler and Tools: 7563 7564No changes for this release. 7565 7566---------------------------------------- 756721 July 2006. Summary of changes for version 20060721: 7568 75691) ACPI CA Core Subsystem: 7570 7571The full source code for the ASL test suite used to validate the iASL 7572compiler and the ACPICA core subsystem is being released with the ACPICA 7573source for the first time. The source is contained in a separate package 7574and 7575consists of over 1100 files that exercise all ASL/AML operators. The 7576package 7577should appear on the Intel/ACPI web site shortly. (Valery Podrezov, 7578Fiodor 7579Suietov) 7580 7581Completed a new design and implementation for support of the ACPI Global 7582Lock. On the OS side, the global lock is now treated as a standard AML 7583mutex. Previously, multiple OS threads could "acquire" the global lock 7584simultaneously. However, this could cause the BIOS to be starved out of 7585the 7586lock - especially in cases such as the Embedded Controller driver where 7587there is a tight coupling between the OS and the BIOS. 7588 7589Implemented an optimization for the ACPI Global Lock interrupt mechanism. 7590The Global Lock interrupt handler no longer queues the execution of a 7591separate thread to signal the global lock semaphore. Instead, the 7592semaphore 7593is signaled directly from the interrupt handler. 7594 7595Implemented support within the AML interpreter for package objects that 7596contain a larger AML length (package list length) than the package 7597element 7598count. In this case, the length of the package is truncated to match the 7599package element count. Some BIOS code apparently modifies the package 7600length 7601on the fly, and this change supports this behavior. Provides 7602compatibility 7603with the MS AML interpreter. (With assistance from Fiodor Suietov) 7604 7605Implemented a temporary fix for the BankValue parameter of a Bank Field 7606to 7607support all constant values, now including the Zero and One opcodes. 7608Evaluation of this parameter must eventually be converted to a full 7609TermArg 7610evaluation. A not-implemented error is now returned (temporarily) for 7611non- 7612constant values for this parameter. 7613 7614Fixed problem reports (Fiodor Suietov) integrated: 7615- Fix for premature object deletion after CopyObject on Operation Region 7616(BZ 7617350) 7618 7619Example Code and Data Size: These are the sizes for the OS-independent 7620acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7621debug version of the code includes the debug output trace mechanism and 7622has 7623a much larger code and data size. 7624 7625 Previous Release: 7626 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 7627 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 7628 Current Release: 7629 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 7630 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 7631 7632 76332) iASL Compiler/Disassembler and Tools: 7634 7635No changes for this release. 7636 7637---------------------------------------- 763807 July 2006. Summary of changes for version 20060707: 7639 76401) ACPI CA Core Subsystem: 7641 7642Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 7643that do not allow the initialization of address pointers within packed 7644structures - even though the hardware itself may support misaligned 7645transfers. Some of the debug data structures are packed by default to 7646minimize size. 7647 7648Added an error message for the case where AcpiOsGetThreadId() returns 7649zero. 7650A non-zero value is required by the core ACPICA code to ensure the proper 7651operation of AML mutexes and recursive control methods. 7652 7653The DSDT is now the only ACPI table that determines whether the AML 7654interpreter is in 32-bit or 64-bit mode. Not really a functional change, 7655but 7656the hooks for per-table 32/64 switching have been removed from the code. 7657A 7658clarification to the ACPI specification is forthcoming in ACPI 3.0B. 7659 7660Fixed a possible leak of an OwnerID in the error path of 7661AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 7662deletion to a single place in AcpiTbUninstallTable to correct possible 7663leaks 7664when using the AcpiTbDeleteTablesByType interface (with assistance from 7665Lance Ortiz.) 7666 7667Fixed a problem with Serialized control methods where the semaphore 7668associated with the method could be over-signaled after multiple method 7669invocations. 7670 7671Fixed two issues with the locking of the internal namespace data 7672structure. 7673Both the Unload() operator and AcpiUnloadTable interface now lock the 7674namespace during the namespace deletion associated with the table unload 7675(with assistance from Linn Crosetto.) 7676 7677Fixed problem reports (Valery Podrezov) integrated: 7678- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 7679 7680Fixed problem reports (Fiodor Suietov) integrated: 7681- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 7682- On Address Space handler deletion, needless deactivation call (BZ 374) 7683- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 7684375) 7685- Possible memory leak, Notify sub-objects of Processor, Power, 7686ThermalZone 7687(BZ 376) 7688- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 7689- Minimum Length of RSDT should be validated (BZ 379) 7690- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 7691Handler (BZ (380) 7692- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type 7693loaded 7694(BZ 381) 7695 7696Example Code and Data Size: These are the sizes for the OS-independent 7697acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7698debug version of the code includes the debug output trace mechanism and 7699has 7700a much larger code and data size. 7701 7702 Previous Release: 7703 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 7704 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 7705 Current Release: 7706 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 7707 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 7708 7709 77102) iASL Compiler/Disassembler and Tools: 7711 7712Fixed problem reports: 7713Compiler segfault when ASL contains a long (>1024) String declaration (BZ 7714436) 7715 7716---------------------------------------- 771723 June 2006. Summary of changes for version 20060623: 7718 77191) ACPI CA Core Subsystem: 7720 7721Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 7722allows the type to be customized to the host OS for improved efficiency 7723(since a spinlock is usually a very small object.) 7724 7725Implemented support for "ignored" bits in the ACPI registers. According 7726to 7727the ACPI specification, these bits should be preserved when writing the 7728registers via a read/modify/write cycle. There are 3 bits preserved in 7729this 7730manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 7731 7732Implemented the initial deployment of new OSL mutex interfaces. Since 7733some 7734host operating systems have separate mutex and semaphore objects, this 7735feature was requested. The base code now uses mutexes (and the new mutex 7736interfaces) wherever a binary semaphore was used previously. However, for 7737the current release, the mutex interfaces are defined as macros to map 7738them 7739to the existing semaphore interfaces. Therefore, no OSL changes are 7740required 7741at this time. (See acpiosxf.h) 7742 7743Fixed several problems with the support for the control method SyncLevel 7744parameter. The SyncLevel now works according to the ACPI specification 7745and 7746in concert with the Mutex SyncLevel parameter, since the current 7747SyncLevel 7748is a property of the executing thread. Mutual exclusion for control 7749methods 7750is now implemented with a mutex instead of a semaphore. 7751 7752Fixed three instances of the use of the C shift operator in the bitfield 7753support code (exfldio.c) to avoid the use of a shift value larger than 7754the 7755target data width. The behavior of C compilers is undefined in this case 7756and 7757can cause unpredictable results, and therefore the case must be detected 7758and 7759avoided. (Fiodor Suietov) 7760 7761Added an info message whenever an SSDT or OEM table is loaded dynamically 7762via the Load() or LoadTable() ASL operators. This should improve 7763debugging 7764capability since it will show exactly what tables have been loaded 7765(beyond 7766the tables present in the RSDT/XSDT.) 7767 7768Example Code and Data Size: These are the sizes for the OS-independent 7769acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7770debug version of the code includes the debug output trace mechanism and 7771has 7772a much larger code and data size. 7773 7774 Previous Release: 7775 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 7776 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 7777 Current Release: 7778 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 7779 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 7780 7781 77822) iASL Compiler/Disassembler and Tools: 7783 7784No changes for this release. 7785 7786---------------------------------------- 778708 June 2006. Summary of changes for version 20060608: 7788 77891) ACPI CA Core Subsystem: 7790 7791Converted the locking mutex used for the ACPI hardware to a spinlock. 7792This 7793change should eliminate all problems caused by attempting to acquire a 7794semaphore at interrupt level, and it means that all ACPICA external 7795interfaces that directly access the ACPI hardware can be safely called 7796from 7797interrupt level. OSL code that implements the semaphore interfaces should 7798be 7799able to eliminate any workarounds for being called at interrupt level. 7800 7801Fixed a regression introduced in 20060526 where the ACPI device 7802initialization could be prematurely aborted with an AE_NOT_FOUND if a 7803device 7804did not have an optional _INI method. 7805 7806Fixed an IndexField issue where a write to the Data Register should be 7807limited in size to the AccessSize (width) of the IndexField itself. (BZ 7808433, 7809Fiodor Suietov) 7810 7811Fixed problem reports (Valery Podrezov) integrated: 7812- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 7813 7814Fixed problem reports (Fiodor Suietov) integrated: 7815- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 7816 7817Removed four global mutexes that were obsolete and were no longer being 7818used. 7819 7820Example Code and Data Size: These are the sizes for the OS-independent 7821acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7822debug version of the code includes the debug output trace mechanism and 7823has 7824a much larger code and data size. 7825 7826 Previous Release: 7827 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 7828 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 7829 Current Release: 7830 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 7831 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 7832 7833 78342) iASL Compiler/Disassembler and Tools: 7835 7836Fixed a fault when using -g option (get tables from registry) on Windows 7837machines. 7838 7839Fixed problem reports integrated: 7840- Generate error if CreateField NumBits parameter is zero. (BZ 405) 7841- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 7842Suietov) 7843- Global table revision override (-r) is ignored (BZ 413) 7844 7845---------------------------------------- 784626 May 2006. Summary of changes for version 20060526: 7847 78481) ACPI CA Core Subsystem: 7849 7850Restructured, flattened, and simplified the internal interfaces for 7851namespace object evaluation - resulting in smaller code, less CPU stack 7852use, 7853and fewer interfaces. (With assistance from Mikhail Kouzmich) 7854 7855Fixed a problem with the CopyObject operator where the first parameter 7856was 7857not typed correctly for the parser, interpreter, compiler, and 7858disassembler. 7859Caused various errors and unexpected behavior. 7860 7861Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 7862produced incorrect results with some C compilers. Since the behavior of C 7863compilers when the shift value is larger than the datatype width is 7864apparently not well defined, the interpreter now detects this condition 7865and 7866simply returns zero as expected in all such cases. (BZ 395) 7867 7868Fixed problem reports (Valery Podrezov) integrated: 7869- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 7870- Allow interpreter to handle nested method declarations (BZ 5361) 7871 7872Fixed problem reports (Fiodor Suietov) integrated: 7873- AcpiTerminate doesn't free debug memory allocation list objects (BZ 7874355) 7875- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 7876356) 7877- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 7878- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 7879- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 7880- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 7881- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 7882- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 7883- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 7884365) 7885- Status of the Global Initialization Handler call not used (BZ 366) 7886- Incorrect object parameter to Global Initialization Handler (BZ 367) 7887 7888Example Code and Data Size: These are the sizes for the OS-independent 7889acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7890debug version of the code includes the debug output trace mechanism and 7891has 7892a much larger code and data size. 7893 7894 Previous Release: 7895 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 7896 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 7897 Current Release: 7898 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 7899 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 7900 7901 79022) iASL Compiler/Disassembler and Tools: 7903 7904Modified the parser to allow the names IO, DMA, and IRQ to be used as 7905namespace identifiers with no collision with existing resource descriptor 7906macro names. This provides compatibility with other ASL compilers and is 7907most useful for disassembly/recompilation of existing tables without 7908parse 7909errors. (With assistance from Thomas Renninger) 7910 7911Disassembler: fixed an incorrect disassembly problem with the 7912DataTableRegion and CopyObject operators. Fixed a possible fault during 7913disassembly of some Alias operators. 7914 7915---------------------------------------- 791612 May 2006. Summary of changes for version 20060512: 7917 79181) ACPI CA Core Subsystem: 7919 7920Replaced the AcpiOsQueueForExecution interface with a new interface named 7921AcpiOsExecute. The major difference is that the new interface does not 7922have 7923a Priority parameter, this appeared to be useless and has been replaced 7924by 7925a 7926Type parameter. The Type tells the host what type of execution is being 7927requested, such as global lock handler, notify handler, GPE handler, etc. 7928This allows the host to queue and execute the request as appropriate for 7929the 7930request type, possibly using different work queues and different 7931priorities 7932for the various request types. This enables fixes for multithreading 7933deadlock problems such as BZ #5534, and will require changes to all 7934existing 7935OS interface layers. (Alexey Starikovskiy and Bob Moore) 7936 7937Fixed a possible memory leak associated with the support for the so- 7938called 7939"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 7940Suietov) 7941 7942Fixed a problem with the Load() operator where a table load from an 7943operation region could overwrite an internal table buffer by up to 7 7944bytes 7945and cause alignment faults on IPF systems. (With assistance from Luming 7946Yu) 7947 7948Example Code and Data Size: These are the sizes for the OS-independent 7949acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7950debug version of the code includes the debug output trace mechanism and 7951has 7952a much larger code and data size. 7953 7954 Previous Release: 7955 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 7956 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 7957 Current Release: 7958 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 7959 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 7960 7961 7962 79632) iASL Compiler/Disassembler and Tools: 7964 7965Disassembler: Implemented support to cross reference the internal 7966namespace 7967and automatically generate ASL External() statements for symbols not 7968defined 7969within the current table being disassembled. This will simplify the 7970disassembly and recompilation of interdependent tables such as SSDTs 7971since 7972these statements will no longer have to be added manually. 7973 7974Disassembler: Implemented experimental support to automatically detect 7975invocations of external control methods and generate appropriate 7976External() 7977statements. This is problematic because the AML cannot be correctly 7978parsed 7979until the number of arguments for each control method is known. 7980Currently, 7981standalone method invocations and invocations as the source operand of a 7982Store() statement are supported. 7983 7984Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 7985LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 7986LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 7987more readable and likely closer to the original ASL source. 7988 7989---------------------------------------- 799021 April 2006. Summary of changes for version 20060421: 7991 79921) ACPI CA Core Subsystem: 7993 7994Removed a device initialization optimization introduced in 20051216 where 7995the _STA method was not run unless an _INI was also present for the same 7996device. This optimization could cause problems because it could allow 7997_INI 7998methods to be run within a not-present device subtree. (If a not-present 7999device had no _INI, _STA would not be run, the not-present status would 8000not 8001be discovered, and the children of the device would be incorrectly 8002traversed.) 8003 8004Implemented a new _STA optimization where namespace subtrees that do not 8005contain _INI are identified and ignored during device initialization. 8006Selectively running _STA can significantly improve boot time on large 8007machines (with assistance from Len Brown.) 8008 8009Implemented support for the device initialization case where the returned 8010_STA flags indicate a device not-present but functioning. In this case, 8011_INI 8012is not run, but the device children are examined for presence, as per the 8013ACPI specification. 8014 8015Implemented an additional change to the IndexField support in order to 8016conform to MS behavior. The value written to the Index Register is not 8017simply a byte offset, it is a byte offset in units of the access width of 8018the parent Index Field. (Fiodor Suietov) 8019 8020Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 8021interface is called during the creation of all AML operation regions, and 8022allows the host OS to exert control over what addresses it will allow the 8023AML code to access. Operation Regions whose addresses are disallowed will 8024cause a runtime exception when they are actually accessed (will not 8025affect 8026or abort table loading.) See oswinxf or osunixxf for an example 8027implementation. 8028 8029Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 8030interface allows the host OS to match the various "optional" 8031interface/behavior strings for the _OSI predefined control method as 8032appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 8033for an example implementation. 8034 8035Restructured and corrected various problems in the exception handling 8036code 8037paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 8038(with assistance from Takayoshi Kochi.) 8039 8040Modified the Linux source converter to ignore quoted string literals 8041while 8042converting identifiers from mixed to lower case. This will correct 8043problems 8044with the disassembler and other areas where such strings must not be 8045modified. 8046 8047The ACPI_FUNCTION_* macros no longer require quotes around the function 8048name. This allows the Linux source converter to convert the names, now 8049that 8050the converter ignores quoted strings. 8051 8052Example Code and Data Size: These are the sizes for the OS-independent 8053acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8054debug version of the code includes the debug output trace mechanism and 8055has 8056a much larger code and data size. 8057 8058 Previous Release: 8059 8060 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 8061 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 8062 Current Release: 8063 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 8064 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 8065 8066 80672) iASL Compiler/Disassembler and Tools: 8068 8069Implemented 3 new warnings for iASL, and implemented multiple warning 8070levels 8071(w2 flag). 8072 80731) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is 8074not 8075WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 8076check for the possible timeout, a warning is issued. 8077 80782) Useless operators: If an ASL operator does not specify an optional 8079target 8080operand and it also does not use the function return value from the 8081operator, a warning is issued since the operator effectively does 8082nothing. 8083 80843) Unreferenced objects: If a namespace object is created, but never 8085referenced, a warning is issued. This is a warning level 2 since there 8086are 8087cases where this is ok, such as when a secondary table is loaded that 8088uses 8089the unreferenced objects. Even so, care is taken to only flag objects 8090that 8091don't look like they will ever be used. For example, the reserved methods 8092(starting with an underscore) are usually not referenced because it is 8093expected that the OS will invoke them. 8094 8095---------------------------------------- 809631 March 2006. Summary of changes for version 20060331: 8097 80981) ACPI CA Core Subsystem: 8099 8100Implemented header file support for the following additional ACPI tables: 8101ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this 8102support, 8103all current and known ACPI tables are now defined in the ACPICA headers 8104and 8105are available for use by device drivers and other software. 8106 8107Implemented support to allow tables that contain ACPI names with invalid 8108characters to be loaded. Previously, this would cause the table load to 8109fail, but since there are several known cases of such tables on existing 8110machines, this change was made to enable ACPI support for them. Also, 8111this 8112matches the behavior of the Microsoft ACPI implementation. 8113 8114Fixed a couple regressions introduced during the memory optimization in 8115the 811620060317 release. The namespace node definition required additional 8117reorganization and an internal datatype that had been changed to 8-bit 8118was 8119restored to 32-bit. (Valery Podrezov) 8120 8121Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 8122could be passed through to AcpiOsReleaseObject which is unexpected. Such 8123null pointers are now trapped and ignored, matching the behavior of the 8124previous implementation before the deployment of AcpiOsReleaseObject. 8125(Valery Podrezov, Fiodor Suietov) 8126 8127Fixed a memory mapping leak during the deletion of a SystemMemory 8128operation 8129region where a cached memory mapping was not deleted. This became a 8130noticeable problem for operation regions that are defined within 8131frequently 8132used control methods. (Dana Meyers) 8133 8134Reorganized the ACPI table header files into two main files: one for the 8135ACPI tables consumed by the ACPICA core, and another for the 8136miscellaneous 8137ACPI tables that are consumed by the drivers and other software. The 8138various 8139FADT definitions were merged into one common section and three different 8140tables (ACPI 1.0, 1.0+, and 2.0) 8141 8142Example Code and Data Size: These are the sizes for the OS-independent 8143acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8144debug version of the code includes the debug output trace mechanism and 8145has 8146a much larger code and data size. 8147 8148 Previous Release: 8149 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 8150 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 8151 Current Release: 8152 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 8153 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 8154 8155 81562) iASL Compiler/Disassembler and Tools: 8157 8158Disassembler: Implemented support to decode and format all non-AML ACPI 8159tables (tables other than DSDTs and SSDTs.) This includes the new tables 8160added to the ACPICA headers, therefore all current and known ACPI tables 8161are 8162supported. 8163 8164Disassembler: The change to allow ACPI names with invalid characters also 8165enables the disassembly of such tables. Invalid characters within names 8166are 8167changed to '*' to make the name printable; the iASL compiler will still 8168generate an error for such names, however, since this is an invalid ACPI 8169character. 8170 8171Implemented an option for AcpiXtract (-a) to extract all tables found in 8172the 8173input file. The default invocation extracts only the DSDTs and SSDTs. 8174 8175Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 8176makefile for the AcpiXtract utility. 8177 8178---------------------------------------- 817917 March 2006. Summary of changes for version 20060317: 8180 81811) ACPI CA Core Subsystem: 8182 8183Implemented the use of a cache object for all internal namespace nodes. 8184Since there are about 1000 static nodes in a typical system, this will 8185decrease memory use for cache implementations that minimize per- 8186allocation 8187overhead (such as a slab allocator.) 8188 8189Removed the reference count mechanism for internal namespace nodes, since 8190it 8191was deemed unnecessary. This reduces the size of each namespace node by 8192about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit 8193case, 8194and 32 bytes for the 64-bit case. 8195 8196Optimized several internal data structures to reduce object size on 64- 8197bit 8198platforms by packing data within the 64-bit alignment. This includes the 8199frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 8200instances corresponding to the namespace objects. 8201 8202Added two new strings for the predefined _OSI method: "Windows 2001.1 8203SP1" 8204and "Windows 2006". 8205 8206Split the allocation tracking mechanism out to a separate file, from 8207utalloc.c to uttrack.c. This mechanism appears to be only useful for 8208application-level code. Kernels may wish to not include uttrack.c in 8209distributions. 8210 8211Removed all remnants of the obsolete ACPI_REPORT_* macros and the 8212associated 8213code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 8214macros.) 8215 8216Code and Data Size: These are the sizes for the acpica.lib produced by 8217the 8218Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 8219ACPI 8220driver or OSPM code. The debug version of the code includes the debug 8221output 8222trace mechanism and has a much larger code and data size. Note that these 8223values will vary depending on the efficiency of the compiler and the 8224compiler options used during generation. 8225 8226 Previous Release: 8227 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8228 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 8229 Current Release: 8230 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 8231 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 8232 8233 82342) iASL Compiler/Disassembler and Tools: 8235 8236Implemented an ANSI C version of the acpixtract utility. This version 8237will 8238automatically extract the DSDT and all SSDTs from the input acpidump text 8239file and dump the binary output to separate files. It can also display a 8240summary of the input file including the headers for each table found and 8241will extract any single ACPI table, with any signature. (See 8242source/tools/acpixtract) 8243 8244---------------------------------------- 824510 March 2006. Summary of changes for version 20060310: 8246 82471) ACPI CA Core Subsystem: 8248 8249Tagged all external interfaces to the subsystem with the new 8250ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to 8251assist 8252kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 8253macro. The default definition is NULL. 8254 8255Added the ACPI_THREAD_ID type for the return value from 8256AcpiOsGetThreadId. 8257This allows the host to define this as necessary to simplify kernel 8258integration. The default definition is ACPI_NATIVE_UINT. 8259 8260Fixed two interpreter problems related to error processing, the deletion 8261of 8262objects, and placing invalid pointers onto the internal operator result 8263stack. BZ 6028, 6151 (Valery Podrezov) 8264 8265Increased the reference count threshold where a warning is emitted for 8266large 8267reference counts in order to eliminate unnecessary warnings on systems 8268with 8269large namespaces (especially 64-bit.) Increased the value from 0x400 to 82700x800. 8271 8272Due to universal disagreement as to the meaning of the 'c' in the 8273calloc() 8274function, the ACPI_MEM_CALLOCATE macro has been renamed to 8275ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 8276ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 8277ACPI_FREE. 8278 8279Code and Data Size: These are the sizes for the acpica.lib produced by 8280the 8281Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 8282ACPI 8283driver or OSPM code. The debug version of the code includes the debug 8284output 8285trace mechanism and has a much larger code and data size. Note that these 8286values will vary depending on the efficiency of the compiler and the 8287compiler options used during generation. 8288 8289 Previous Release: 8290 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 8291 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 8292 Current Release: 8293 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8294 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 8295 8296 82972) iASL Compiler/Disassembler: 8298 8299Disassembler: implemented support for symbolic resource descriptor 8300references. If a CreateXxxxField operator references a fixed offset 8301within 8302a 8303resource descriptor, a name is assigned to the descriptor and the offset 8304is 8305translated to the appropriate resource tag and pathname. The addition of 8306this support brings the disassembled code very close to the original ASL 8307source code and helps eliminate run-time errors when the disassembled 8308code 8309is modified (and recompiled) in such a way as to invalidate the original 8310fixed offsets. 8311 8312Implemented support for a Descriptor Name as the last parameter to the 8313ASL 8314Register() macro. This parameter was inadvertently left out of the ACPI 8315specification, and will be added for ACPI 3.0b. 8316 8317Fixed a problem where the use of the "_OSI" string (versus the full path 8318"\_OSI") caused an internal compiler error. ("No back ptr to op") 8319 8320Fixed a problem with the error message that occurs when an invalid string 8321is 8322used for a _HID object (such as one with an embedded asterisk: 8323"*PNP010A".) 8324The correct message is now displayed. 8325 8326---------------------------------------- 832717 February 2006. Summary of changes for version 20060217: 8328 83291) ACPI CA Core Subsystem: 8330 8331Implemented a change to the IndexField support to match the behavior of 8332the 8333Microsoft AML interpreter. The value written to the Index register is now 8334a 8335byte offset, no longer an index based upon the width of the Data 8336register. 8337This should fix IndexField problems seen on some machines where the Data 8338register is not exactly one byte wide. The ACPI specification will be 8339clarified on this point. 8340 8341Fixed a problem where several resource descriptor types could overrun the 8342internal descriptor buffer due to size miscalculation: VendorShort, 8343VendorLong, and Interrupt. This was noticed on IA64 machines, but could 8344affect all platforms. 8345 8346Fixed a problem where individual resource descriptors were misaligned 8347within 8348the internal buffer, causing alignment faults on IA64 platforms. 8349 8350Code and Data Size: These are the sizes for the acpica.lib produced by 8351the 8352Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 8353ACPI 8354driver or OSPM code. The debug version of the code includes the debug 8355output 8356trace mechanism and has a much larger code and data size. Note that these 8357values will vary depending on the efficiency of the compiler and the 8358compiler options used during generation. 8359 8360 Previous Release: 8361 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8362 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 8363 Current Release: 8364 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 8365 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 8366 8367 83682) iASL Compiler/Disassembler: 8369 8370Implemented support for new reserved names: _WDG and _WED are Microsoft 8371extensions for Windows Instrumentation Management, _TDL is a new ACPI- 8372defined method (Throttling Depth Limit.) 8373 8374Fixed a problem where a zero-length VendorShort or VendorLong resource 8375descriptor was incorrectly emitted as a descriptor of length one. 8376 8377---------------------------------------- 837810 February 2006. Summary of changes for version 20060210: 8379 83801) ACPI CA Core Subsystem: 8381 8382Removed a couple of extraneous ACPI_ERROR messages that appeared during 8383normal execution. These became apparent after the conversion from 8384ACPI_DEBUG_PRINT. 8385 8386Fixed a problem where the CreateField operator could hang if the BitIndex 8387or 8388NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 8389 8390Fixed a problem where a DeRefOf operation on a buffer object incorrectly 8391failed with an exception. This also fixes a couple of related RefOf and 8392DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 8393 8394Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead 8395of 8396AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, 8397BZ 83985480) 8399 8400Implemented a memory cleanup at the end of the execution of each 8401iteration 8402of an AML While() loop, preventing the accumulation of outstanding 8403objects. 8404(Valery Podrezov, BZ 5427) 8405 8406Eliminated a chunk of duplicate code in the object resolution code. 8407(Valery 8408Podrezov, BZ 5336) 8409 8410Fixed several warnings during the 64-bit code generation. 8411 8412The AcpiSrc source code conversion tool now inserts one line of 8413whitespace 8414after an if() statement that is followed immediately by a comment, 8415improving 8416readability of the Linux code. 8417 8418Code and Data Size: The current and previous library sizes for the core 8419subsystem are shown below. These are the code and data sizes for the 8420acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8421These 8422values do not include any ACPI driver or OSPM code. The debug version of 8423the 8424code includes the debug output trace mechanism and has a much larger code 8425and data size. Note that these values will vary depending on the 8426efficiency 8427of the compiler and the compiler options used during generation. 8428 8429 Previous Release: 8430 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 8431 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 8432 Current Release: 8433 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8434 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 8435 8436 84372) iASL Compiler/Disassembler: 8438 8439Fixed a problem with the disassembly of a BankField operator with a 8440complex 8441expression for the BankValue parameter. 8442 8443---------------------------------------- 844427 January 2006. Summary of changes for version 20060127: 8445 84461) ACPI CA Core Subsystem: 8447 8448Implemented support in the Resource Manager to allow unresolved 8449namestring 8450references within resource package objects for the _PRT method. This 8451support 8452is in addition to the previously implemented unresolved reference support 8453within the AML parser. If the interpreter slack mode is enabled, these 8454unresolved references will be passed through to the caller as a NULL 8455package 8456entry. 8457 8458Implemented and deployed new macros and functions for error and warning 8459messages across the subsystem. These macros are simpler and generate less 8460code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 8461ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 8462macros remain defined to allow ACPI drivers time to migrate to the new 8463macros. 8464 8465Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of 8466the 8467Acquire/Release Lock OSL interfaces. 8468 8469Fixed a problem where Alias ASL operators are sometimes not correctly 8470resolved, in both the interpreter and the iASL compiler. 8471 8472Fixed several problems with the implementation of the 8473ConcatenateResTemplate 8474ASL operator. As per the ACPI specification, zero length buffers are now 8475treated as a single EndTag. One-length buffers always cause a fatal 8476exception. Non-zero length buffers that do not end with a full 2-byte 8477EndTag 8478cause a fatal exception. 8479 8480Fixed a possible structure overwrite in the AcpiGetObjectInfo external 8481interface. (With assistance from Thomas Renninger) 8482 8483Code and Data Size: The current and previous library sizes for the core 8484subsystem are shown below. These are the code and data sizes for the 8485acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8486These 8487values do not include any ACPI driver or OSPM code. The debug version of 8488the 8489code includes the debug output trace mechanism and has a much larger code 8490and data size. Note that these values will vary depending on the 8491efficiency 8492of the compiler and the compiler options used during generation. 8493 8494 Previous Release: 8495 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 8496 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 8497 Current Release: 8498 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 8499 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 8500 8501 85022) iASL Compiler/Disassembler: 8503 8504Fixed an internal error that was generated for any forward references to 8505ASL 8506Alias objects. 8507 8508---------------------------------------- 850913 January 2006. Summary of changes for version 20060113: 8510 85111) ACPI CA Core Subsystem: 8512 8513Added 2006 copyright to all module headers and signons. This affects 8514virtually every file in the ACPICA core subsystem, iASL compiler, and the 8515utilities. 8516 8517Enhanced the ACPICA error reporting in order to simplify user migration 8518to 8519the non-debug version of ACPICA. Replaced all instances of the 8520ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN 8521debug 8522levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 8523respectively. This preserves all error and warning messages in the non- 8524debug 8525version of the ACPICA code (this has been referred to as the "debug lite" 8526option.) Over 200 cases were converted to create a total of over 380 8527error/warning messages across the ACPICA code. This increases the code 8528and 8529data size of the default non-debug version of the code somewhat (about 853013K), 8531but all error/warning reporting may be disabled if desired (and code 8532eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 8533configuration option. The size of the debug version of ACPICA remains 8534about 8535the same. 8536 8537Fixed a memory leak within the AML Debugger "Set" command. One object was 8538not properly deleted for every successful invocation of the command. 8539 8540Code and Data Size: The current and previous library sizes for the core 8541subsystem are shown below. These are the code and data sizes for the 8542acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8543These 8544values do not include any ACPI driver or OSPM code. The debug version of 8545the 8546code includes the debug output trace mechanism and has a much larger code 8547and data size. Note that these values will vary depending on the 8548efficiency 8549of the compiler and the compiler options used during generation. 8550 8551 Previous Release: 8552 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 8553 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 8554 Current Release: 8555 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 8556 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 8557 8558 85592) iASL Compiler/Disassembler: 8560 8561The compiler now officially supports the ACPI 3.0a specification that was 8562released on December 30, 2005. (Specification is available at 8563www.acpi.info) 8564 8565---------------------------------------- 856616 December 2005. Summary of changes for version 20051216: 8567 85681) ACPI CA Core Subsystem: 8569 8570Implemented optional support to allow unresolved names within ASL Package 8571objects. A null object is inserted in the package when a named reference 8572cannot be located in the current namespace. Enabled via the interpreter 8573slack flag, this should eliminate AE_NOT_FOUND exceptions seen on 8574machines 8575that contain such code. 8576 8577Implemented an optimization to the initialization sequence that can 8578improve 8579boot time. During ACPI device initialization, the _STA method is now run 8580if 8581and only if the _INI method exists. The _STA method is used to determine 8582if 8583the device is present; An _INI can only be run if _STA returns present, 8584but 8585it is a waste of time to run the _STA method if the _INI does not exist. 8586(Prototype and assistance from Dong Wei) 8587 8588Implemented use of the C99 uintptr_t for the pointer casting macros if it 8589is 8590available in the current compiler. Otherwise, the default (void *) cast 8591is 8592used as before. 8593 8594Fixed some possible memory leaks found within the execution path of the 8595Break, Continue, If, and CreateField operators. (Valery Podrezov) 8596 8597Fixed a problem introduced in the 20051202 release where an exception is 8598generated during method execution if a control method attempts to declare 8599another method. 8600 8601Moved resource descriptor string constants that are used by both the AML 8602disassembler and AML debugger to the common utilities directory so that 8603these components are independent. 8604 8605Implemented support in the AcpiExec utility (-e switch) to globally 8606ignore 8607exceptions during control method execution (method is not aborted.) 8608 8609Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 8610generation. 8611 8612Code and Data Size: The current and previous library sizes for the core 8613subsystem are shown below. These are the code and data sizes for the 8614acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8615These 8616values do not include any ACPI driver or OSPM code. The debug version of 8617the 8618code includes the debug output trace mechanism and has a much larger code 8619and data size. Note that these values will vary depending on the 8620efficiency 8621of the compiler and the compiler options used during generation. 8622 8623 Previous Release: 8624 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 8625 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 8626 Current Release: 8627 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 8628 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 8629 8630 86312) iASL Compiler/Disassembler: 8632 8633Fixed a problem where a CPU stack overflow fault could occur if a 8634recursive 8635method call was made from within a Return statement. 8636 8637---------------------------------------- 863802 December 2005. Summary of changes for version 20051202: 8639 86401) ACPI CA Core Subsystem: 8641 8642Modified the parsing of control methods to no longer create namespace 8643objects during the first pass of the parse. Objects are now created only 8644during the execute phase, at the moment the namespace creation operator 8645is 8646encountered in the AML (Name, OperationRegion, CreateByteField, etc.) 8647This 8648should eliminate ALREADY_EXISTS exceptions seen on some machines where 8649reentrant control methods are protected by an AML mutex. The mutex will 8650now 8651correctly block multiple threads from attempting to create the same 8652object 8653more than once. 8654 8655Increased the number of available Owner Ids for namespace object tracking 8656from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen 8657on 8658some machines with a large number of ACPI tables (either static or 8659dynamic). 8660 8661Fixed a problem with the AcpiExec utility where a fault could occur when 8662the 8663-b switch (batch mode) is used. 8664 8665Enhanced the namespace dump routine to output the owner ID for each 8666namespace object. 8667 8668Code and Data Size: The current and previous library sizes for the core 8669subsystem are shown below. These are the code and data sizes for the 8670acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8671These 8672values do not include any ACPI driver or OSPM code. The debug version of 8673the 8674code includes the debug output trace mechanism and has a much larger code 8675and data size. Note that these values will vary depending on the 8676efficiency 8677of the compiler and the compiler options used during generation. 8678 8679 Previous Release: 8680 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 8681 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 8682 Current Release: 8683 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 8684 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 8685 8686 86872) iASL Compiler/Disassembler: 8688 8689Fixed a parse error during compilation of certain Switch/Case constructs. 8690To 8691simplify the parse, the grammar now allows for multiple Default 8692statements 8693and this error is now detected and flagged during the analysis phase. 8694 8695Disassembler: The disassembly now includes the contents of the original 8696table header within a comment at the start of the file. This includes the 8697name and version of the original ASL compiler. 8698 8699---------------------------------------- 870017 November 2005. Summary of changes for version 20051117: 8701 87021) ACPI CA Core Subsystem: 8703 8704Fixed a problem in the AML parser where the method thread count could be 8705decremented below zero if any errors occurred during the method parse 8706phase. 8707This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some 8708machines. 8709This also fixed a related regression with the mechanism that detects and 8710corrects methods that cannot properly handle reentrancy (related to the 8711deployment of the new OwnerId mechanism.) 8712 8713Eliminated the pre-parsing of control methods (to detect errors) during 8714table load. Related to the problem above, this was causing unwind issues 8715if 8716any errors occurred during the parse, and it seemed to be overkill. A 8717table 8718load should not be aborted if there are problems with any single control 8719method, thus rendering this feature rather pointless. 8720 8721Fixed a problem with the new table-driven resource manager where an 8722internal 8723buffer overflow could occur for small resource templates. 8724 8725Implemented a new external interface, AcpiGetVendorResource. This 8726interface 8727will find and return a vendor-defined resource descriptor within a _CRS 8728or 8729_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn 8730Helgaas. 8731 8732Removed the length limit (200) on string objects as per the upcoming ACPI 87333.0A specification. This affects the following areas of the interpreter: 87341) 8735any implicit conversion of a Buffer to a String, 2) a String object 8736result 8737of the ASL Concatentate operator, 3) the String object result of the ASL 8738ToString operator. 8739 8740Fixed a problem in the Windows OS interface layer (OSL) where a 8741WAIT_FOREVER 8742on a semaphore object would incorrectly timeout. This allows the 8743multithreading features of the AcpiExec utility to work properly under 8744Windows. 8745 8746Updated the Linux makefiles for the iASL compiler and AcpiExec to include 8747the recently added file named "utresrc.c". 8748 8749Code and Data Size: The current and previous library sizes for the core 8750subsystem are shown below. These are the code and data sizes for the 8751acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8752These 8753values do not include any ACPI driver or OSPM code. The debug version of 8754the 8755code includes the debug output trace mechanism and has a much larger code 8756and data size. Note that these values will vary depending on the 8757efficiency 8758of the compiler and the compiler options used during generation. 8759 8760 Previous Release: 8761 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 8762 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 8763 Current Release: 8764 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 8765 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 8766 8767 87682) iASL Compiler/Disassembler: 8769 8770Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 8771specification. For the iASL compiler, this means that string literals 8772within 8773the source ASL can be of any length. 8774 8775Enhanced the listing output to dump the AML code for resource descriptors 8776immediately after the ASL code for each descriptor, instead of in a block 8777at 8778the end of the entire resource template. 8779 8780Enhanced the compiler debug output to dump the entire original parse tree 8781constructed during the parse phase, before any transforms are applied to 8782the 8783tree. The transformed tree is dumped also. 8784 8785---------------------------------------- 878602 November 2005. Summary of changes for version 20051102: 8787 87881) ACPI CA Core Subsystem: 8789 8790Modified the subsystem initialization sequence to improve GPE support. 8791The 8792GPE initialization has been split into two parts in order to defer 8793execution 8794of the _PRW methods (Power Resources for Wake) until after the hardware 8795is 8796fully initialized and the SCI handler is installed. This allows the _PRW 8797methods to access fields protected by the Global Lock. This will fix 8798systems 8799where a NO_GLOBAL_LOCK exception has been seen during initialization. 8800 8801Converted the ACPI internal object disassemble and display code within 8802the 8803AML debugger to fully table-driven operation, reducing code size and 8804increasing maintainability. 8805 8806Fixed a regression with the ConcatenateResTemplate() ASL operator 8807introduced 8808in the 20051021 release. 8809 8810Implemented support for "local" internal ACPI object types within the 8811debugger "Object" command and the AcpiWalkNamespace external interfaces. 8812These local types include RegionFields, BankFields, IndexFields, Alias, 8813and 8814reference objects. 8815 8816Moved common AML resource handling code into a new file, "utresrc.c". 8817This 8818code is shared by both the Resource Manager and the AML Debugger. 8819 8820Code and Data Size: The current and previous library sizes for the core 8821subsystem are shown below. These are the code and data sizes for the 8822acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8823These 8824values do not include any ACPI driver or OSPM code. The debug version of 8825the 8826code includes the debug output trace mechanism and has a much larger code 8827and data size. Note that these values will vary depending on the 8828efficiency 8829of the compiler and the compiler options used during generation. 8830 8831 Previous Release: 8832 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 8833 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 8834 Current Release: 8835 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 8836 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 8837 8838 88392) iASL Compiler/Disassembler: 8840 8841Fixed a problem with very large initializer lists (more than 4000 8842elements) 8843for both Buffer and Package objects where the parse stack could overflow. 8844 8845Enhanced the pre-compile source code scan for non-ASCII characters to 8846ignore 8847characters within comment fields. The scan is now always performed and is 8848no 8849longer optional, detecting invalid characters within a source file 8850immediately rather than during the parse phase or later. 8851 8852Enhanced the ASL grammar definition to force early reductions on all 8853list- 8854style grammar elements so that the overall parse stack usage is greatly 8855reduced. This should improve performance and reduce the possibility of 8856parse 8857stack overflow. 8858 8859Eliminated all reduce/reduce conflicts in the iASL parser generation. 8860Also, 8861with the addition of a %expected statement, the compiler generates from 8862source with no warnings. 8863 8864Fixed a possible segment fault in the disassembler if the input filename 8865does not contain a "dot" extension (Thomas Renninger). 8866 8867---------------------------------------- 886821 October 2005. Summary of changes for version 20051021: 8869 88701) ACPI CA Core Subsystem: 8871 8872Implemented support for the EM64T and other x86-64 processors. This 8873essentially entails recognizing that these processors support non-aligned 8874memory transfers. Previously, all 64-bit processors were assumed to lack 8875hardware support for non-aligned transfers. 8876 8877Completed conversion of the Resource Manager to nearly full table-driven 8878operation. Specifically, the resource conversion code (convert AML to 8879internal format and the reverse) and the debug code to dump internal 8880resource descriptors are fully table-driven, reducing code and data size 8881and 8882improving maintainability. 8883 8884The OSL interfaces for Acquire and Release Lock now use a 64-bit flag 8885word 8886on 64-bit processors instead of a fixed 32-bit word. (With assistance 8887from 8888Alexey Starikovskiy) 8889 8890Implemented support within the resource conversion code for the Type- 8891Specific byte within the various ACPI 3.0 *WordSpace macros. 8892 8893Fixed some issues within the resource conversion code for the type- 8894specific 8895flags for both Memory and I/O address resource descriptors. For Memory, 8896implemented support for the MTP and TTP flags. For I/O, split the TRS and 8897TTP flags into two separate fields. 8898 8899Code and Data Size: The current and previous library sizes for the core 8900subsystem are shown below. These are the code and data sizes for the 8901acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8902These 8903values do not include any ACPI driver or OSPM code. The debug version of 8904the 8905code includes the debug output trace mechanism and has a much larger code 8906and data size. Note that these values will vary depending on the 8907efficiency 8908of the compiler and the compiler options used during generation. 8909 8910 Previous Release: 8911 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 8912 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 8913 Current Release: 8914 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 8915 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 8916 8917 8918 89192) iASL Compiler/Disassembler: 8920 8921Relaxed a compiler restriction that disallowed a ResourceIndex byte if 8922the 8923corresponding ResourceSource string was not also present in a resource 8924descriptor declaration. This restriction caused problems with existing 8925AML/ASL code that includes the Index byte without the string. When such 8926AML 8927was disassembled, it could not be compiled without modification. Further, 8928the modified code created a resource template with a different size than 8929the 8930original, breaking code that used fixed offsets into the resource 8931template 8932buffer. 8933 8934Removed a recent feature of the disassembler to ignore a lone 8935ResourceIndex 8936byte. This byte is now emitted if present so that the exact AML can be 8937reproduced when the disassembled code is recompiled. 8938 8939Improved comments and text alignment for the resource descriptor code 8940emitted by the disassembler. 8941 8942Implemented disassembler support for the ACPI 3.0 AccessSize field within 8943a 8944Register() resource descriptor. 8945 8946---------------------------------------- 894730 September 2005. Summary of changes for version 20050930: 8948 89491) ACPI CA Core Subsystem: 8950 8951Completed a major overhaul of the Resource Manager code - specifically, 8952optimizations in the area of the AML/internal resource conversion code. 8953The 8954code has been optimized to simplify and eliminate duplicated code, CPU 8955stack 8956use has been decreased by optimizing function parameters and local 8957variables, and naming conventions across the manager have been 8958standardized 8959for clarity and ease of maintenance (this includes function, parameter, 8960variable, and struct/typedef names.) The update may force changes in some 8961driver code, depending on how resources are handled by the host OS. 8962 8963All Resource Manager dispatch and information tables have been moved to a 8964single location for clarity and ease of maintenance. One new file was 8965created, named "rsinfo.c". 8966 8967The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 8968guarantee that the argument is not evaluated twice, making them less 8969prone 8970to macro side-effects. However, since there exists the possibility of 8971additional stack use if a particular compiler cannot optimize them (such 8972as 8973in the debug generation case), the original macros are optionally 8974available. 8975Note that some invocations of the return_VALUE macro may now cause size 8976mismatch warnings; the return_UINT8 and return_UINT32 macros are provided 8977to 8978eliminate these. (From Randy Dunlap) 8979 8980Implemented a new mechanism to enable debug tracing for individual 8981control 8982methods. A new external interface, AcpiDebugTrace, is provided to enable 8983this mechanism. The intent is to allow the host OS to easily enable and 8984disable tracing for problematic control methods. This interface can be 8985easily exposed to a user or debugger interface if desired. See the file 8986psxface.c for details. 8987 8988AcpiUtCallocate will now return a valid pointer if a length of zero is 8989specified - a length of one is used and a warning is issued. This matches 8990the behavior of AcpiUtAllocate. 8991 8992Code and Data Size: The current and previous library sizes for the core 8993subsystem are shown below. These are the code and data sizes for the 8994acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8995These 8996values do not include any ACPI driver or OSPM code. The debug version of 8997the 8998code includes the debug output trace mechanism and has a much larger code 8999and data size. Note that these values will vary depending on the 9000efficiency 9001of the compiler and the compiler options used during generation. 9002 9003 Previous Release: 9004 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 9005 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 9006 Current Release: 9007 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 9008 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 9009 9010 90112) iASL Compiler/Disassembler: 9012 9013A remark is issued if the effective compile-time length of a package or 9014buffer is zero. Previously, this was a warning. 9015 9016---------------------------------------- 901716 September 2005. Summary of changes for version 20050916: 9018 90191) ACPI CA Core Subsystem: 9020 9021Fixed a problem within the Resource Manager where support for the Generic 9022Register descriptor was not fully implemented. This descriptor is now 9023fully 9024recognized, parsed, disassembled, and displayed. 9025 9026Completely restructured the Resource Manager code to utilize table-driven 9027dispatch and lookup, eliminating many of the large switch() statements. 9028This 9029reduces overall subsystem code size and code complexity. Affects the 9030resource parsing and construction, disassembly, and debug dump output. 9031 9032Cleaned up and restructured the debug dump output for all resource 9033descriptors. Improved readability of the output and reduced code size. 9034 9035Fixed a problem where changes to internal data structures caused the 9036optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 9037 9038Code and Data Size: The current and previous library sizes for the core 9039subsystem are shown below. These are the code and data sizes for the 9040acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9041These 9042values do not include any ACPI driver or OSPM code. The debug version of 9043the 9044code includes the debug output trace mechanism and has a much larger code 9045and data size. Note that these values will vary depending on the 9046efficiency 9047of the compiler and the compiler options used during generation. 9048 9049 Previous Release: 9050 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 9051 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 9052 Current Release: 9053 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 9054 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 9055 9056 90572) iASL Compiler/Disassembler: 9058 9059Updated the disassembler to automatically insert an EndDependentFn() 9060macro 9061into the ASL stream if this macro is missing in the original AML code, 9062simplifying compilation of the resulting ASL module. 9063 9064Fixed a problem in the disassembler where a disassembled ResourceSource 9065string (within a large resource descriptor) was not surrounded by quotes 9066and 9067not followed by a comma, causing errors when the resulting ASL module was 9068compiled. Also, escape sequences within a ResourceSource string are now 9069handled correctly (especially "\\") 9070 9071---------------------------------------- 907202 September 2005. Summary of changes for version 20050902: 9073 90741) ACPI CA Core Subsystem: 9075 9076Fixed a problem with the internal Owner ID allocation and deallocation 9077mechanisms for control method execution and recursive method invocation. 9078This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 9079messages seen on some systems. Recursive method invocation depth is 9080currently limited to 255. (Alexey Starikovskiy) 9081 9082Completely eliminated all vestiges of support for the "module-level 9083executable code" until this support is fully implemented and debugged. 9084This 9085should eliminate the NO_RETURN_VALUE exceptions seen during table load on 9086some systems that invoke this support. 9087 9088Fixed a problem within the resource manager code where the transaction 9089flags 9090for a 64-bit address descriptor were handled incorrectly in the type- 9091specific flag byte. 9092 9093Consolidated duplicate code within the address descriptor resource 9094manager 9095code, reducing overall subsystem code size. 9096 9097Fixed a fault when using the AML debugger "disassemble" command to 9098disassemble individual control methods. 9099 9100Removed references to the "release_current" directory within the Unix 9101release package. 9102 9103Code and Data Size: The current and previous core subsystem library sizes 9104are shown below. These are the code and data sizes for the acpica.lib 9105produced by the Microsoft Visual C++ 6.0 compiler. These values do not 9106include any ACPI driver or OSPM code. The debug version of the code 9107includes 9108the debug output trace mechanism and has a much larger code and data 9109size. 9110Note that these values will vary depending on the efficiency of the 9111compiler 9112and the compiler options used during generation. 9113 9114 Previous Release: 9115 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9116 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 9117 Current Release: 9118 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 9119 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 9120 9121 91222) iASL Compiler/Disassembler: 9123 9124Implemented an error check for illegal duplicate values in the interrupt 9125and 9126dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 9127Interrupt(). 9128 9129Implemented error checking for the Irq() and IrqNoFlags() macros to 9130detect 9131too many values in the interrupt list (16 max) and invalid values in the 9132list (range 0 - 15) 9133 9134The maximum length string literal within an ASL file is now restricted to 9135200 characters as per the ACPI specification. 9136 9137Fixed a fault when using the -ln option (generate namespace listing). 9138 9139Implemented an error check to determine if a DescriptorName within a 9140resource descriptor has already been used within the current scope. 9141 9142---------------------------------------- 914315 August 2005. Summary of changes for version 20050815: 9144 91451) ACPI CA Core Subsystem: 9146 9147Implemented a full bytewise compare to determine if a table load request 9148is 9149attempting to load a duplicate table. The compare is performed if the 9150table 9151signatures and table lengths match. This will allow different tables with 9152the same OEM Table ID and revision to be loaded - probably against the 9153ACPI 9154specification, but discovered in the field nonetheless. 9155 9156Added the changes.txt logfile to each of the zipped release packages. 9157 9158Code and Data Size: Current and previous core subsystem library sizes are 9159shown below. These are the code and data sizes for the acpica.lib 9160produced 9161by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9162any ACPI driver or OSPM code. The debug version of the code includes the 9163debug output trace mechanism and has a much larger code and data size. 9164Note 9165that these values will vary depending on the efficiency of the compiler 9166and 9167the compiler options used during generation. 9168 9169 Previous Release: 9170 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9171 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 9172 Current Release: 9173 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9174 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 9175 9176 91772) iASL Compiler/Disassembler: 9178 9179Fixed a problem where incorrect AML code could be generated for Package 9180objects if optimization is disabled (via the -oa switch). 9181 9182Fixed a problem with where incorrect AML code is generated for variable- 9183length packages when the package length is not specified and the number 9184of 9185initializer values is greater than 255. 9186 9187 9188---------------------------------------- 918929 July 2005. Summary of changes for version 20050729: 9190 91911) ACPI CA Core Subsystem: 9192 9193Implemented support to ignore an attempt to install/load a particular 9194ACPI 9195table more than once. Apparently there exists BIOS code that repeatedly 9196attempts to load the same SSDT upon certain events. With assistance from 9197Venkatesh Pallipadi. 9198 9199Restructured the main interface to the AML parser in order to correctly 9200handle all exceptional conditions. This will prevent leakage of the 9201OwnerId 9202resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on 9203some 9204machines. With assistance from Alexey Starikovskiy. 9205 9206Support for "module level code" has been disabled in this version due to 9207a 9208number of issues that have appeared on various machines. The support can 9209be 9210enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 9211compilation. When the issues are fully resolved, the code will be enabled 9212by 9213default again. 9214 9215Modified the internal functions for debug print support to define the 9216FunctionName parameter as a (const char *) for compatibility with 9217compiler 9218built-in macros such as __FUNCTION__, etc. 9219 9220Linted the entire ACPICA source tree for both 32-bit and 64-bit. 9221 9222Implemented support to display an object count summary for the AML 9223Debugger 9224commands Object and Methods. 9225 9226Code and Data Size: Current and previous core subsystem library sizes are 9227shown below. These are the code and data sizes for the acpica.lib 9228produced 9229by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9230any ACPI driver or OSPM code. The debug version of the code includes the 9231debug output trace mechanism and has a much larger code and data size. 9232Note 9233that these values will vary depending on the efficiency of the compiler 9234and 9235the compiler options used during generation. 9236 9237 Previous Release: 9238 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 9239 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 9240 Current Release: 9241 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9242 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 9243 9244 92452) iASL Compiler/Disassembler: 9246 9247Fixed a regression that appeared in the 20050708 version of the compiler 9248where an error message was inadvertently emitted for invocations of the 9249_OSI 9250reserved control method. 9251 9252---------------------------------------- 925308 July 2005. Summary of changes for version 20050708: 9254 92551) ACPI CA Core Subsystem: 9256 9257The use of the CPU stack in the debug version of the subsystem has been 9258considerably reduced. Previously, a debug structure was declared in every 9259function that used the debug macros. This structure has been removed in 9260favor of declaring the individual elements as parameters to the debug 9261functions. This reduces the cumulative stack use during nested execution 9262of 9263ACPI function calls at the cost of a small increase in the code size of 9264the 9265debug version of the subsystem. With assistance from Alexey Starikovskiy 9266and 9267Len Brown. 9268 9269Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 9270headers to define a macro that will return the current function name at 9271runtime (such as __FUNCTION__ or _func_, etc.) The function name is used 9272by 9273the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 9274compiler-dependent header, the function name is saved on the CPU stack 9275(one 9276pointer per function.) This mechanism is used because apparently there 9277exists no standard ANSI-C defined macro that that returns the function 9278name. 9279 9280Redesigned and reimplemented the "Owner ID" mechanism used to track 9281namespace objects created/deleted by ACPI tables and control method 9282execution. A bitmap is now used to allocate and free the IDs, thus 9283solving 9284the wraparound problem present in the previous implementation. The size 9285of 9286the namespace node descriptor was reduced by 2 bytes as a result (Alexey 9287Starikovskiy). 9288 9289Removed the UINT32_BIT and UINT16_BIT types that were used for the 9290bitfield 9291flag definitions within the headers for the predefined ACPI tables. These 9292have been replaced by UINT8_BIT in order to increase the code portability 9293of 9294the subsystem. If the use of UINT8 remains a problem, we may be forced to 9295eliminate bitfields entirely because of a lack of portability. 9296 9297Enhanced the performance of the AcpiUtUpdateObjectReference procedure. 9298This 9299is a frequently used function and this improvement increases the 9300performance 9301of the entire subsystem (Alexey Starikovskiy). 9302 9303Fixed several possible memory leaks and the inverse - premature object 9304deletion (Alexey Starikovskiy). 9305 9306Code and Data Size: Current and previous core subsystem library sizes are 9307shown below. These are the code and data sizes for the acpica.lib 9308produced 9309by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9310any ACPI driver or OSPM code. The debug version of the code includes the 9311debug output trace mechanism and has a much larger code and data size. 9312Note 9313that these values will vary depending on the efficiency of the compiler 9314and 9315the compiler options used during generation. 9316 9317 Previous Release: 9318 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 9319 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 9320 Current Release: 9321 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 9322 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 9323 9324---------------------------------------- 932524 June 2005. Summary of changes for version 20050624: 9326 93271) ACPI CA Core Subsystem: 9328 9329Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 9330the host-defined cache object. This allows the OSL implementation to 9331define 9332and type this object in any manner desired, simplifying the OSL 9333implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 9334Linux, and should be defined in the OS-specific header file for other 9335operating systems as required. 9336 9337Changed the interface to AcpiOsAcquireObject to directly return the 9338requested object as the function return (instead of ACPI_STATUS.) This 9339change was made for performance reasons, since this is the purpose of the 9340interface in the first place. AcpiOsAcquireObject is now similar to the 9341AcpiOsAllocate interface. 9342 9343Implemented a new AML debugger command named Businfo. This command 9344displays 9345information about all devices that have an associate _PRT object. The 9346_ADR, 9347_HID, _UID, and _CID are displayed for these devices. 9348 9349Modified the initialization sequence in AcpiInitializeSubsystem to call 9350the 9351OSL interface AcpiOslInitialize first, before any local initialization. 9352This 9353change was required because the global initialization now calls OSL 9354interfaces. 9355 9356Enhanced the Dump command to display the entire contents of Package 9357objects 9358(including all sub-objects and their values.) 9359 9360Restructured the code base to split some files because of size and/or 9361because the code logically belonged in a separate file. New files are 9362listed 9363below. All makefiles and project files included in the ACPI CA release 9364have 9365been updated. 9366 utilities/utcache.c /* Local cache interfaces */ 9367 utilities/utmutex.c /* Local mutex support */ 9368 utilities/utstate.c /* State object support */ 9369 interpreter/parser/psloop.c /* Main AML parse loop */ 9370 9371Code and Data Size: Current and previous core subsystem library sizes are 9372shown below. These are the code and data sizes for the acpica.lib 9373produced 9374by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9375any ACPI driver or OSPM code. The debug version of the code includes the 9376debug output trace mechanism and has a much larger code and data size. 9377Note 9378that these values will vary depending on the efficiency of the compiler 9379and 9380the compiler options used during generation. 9381 9382 Previous Release: 9383 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 9384 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 9385 Current Release: 9386 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 9387 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 9388 9389 93902) iASL Compiler/Disassembler: 9391 9392Fixed a regression introduced in version 20050513 where the use of a 9393Package 9394object within a Case() statement caused a compile time exception. The 9395original behavior has been restored (a Match() operator is emitted.) 9396 9397---------------------------------------- 939817 June 2005. Summary of changes for version 20050617: 9399 94001) ACPI CA Core Subsystem: 9401 9402Moved the object cache operations into the OS interface layer (OSL) to 9403allow 9404the host OS to handle these operations if desired (for example, the Linux 9405OSL will invoke the slab allocator). This support is optional; the 9406compile 9407time define ACPI_USE_LOCAL_CACHE may be used to utilize the original 9408cache 9409code in the ACPI CA core. The new OSL interfaces are shown below. See 9410utalloc.c for an example implementation, and acpiosxf.h for the exact 9411interface definitions. With assistance from Alexey Starikovskiy. 9412 AcpiOsCreateCache 9413 AcpiOsDeleteCache 9414 AcpiOsPurgeCache 9415 AcpiOsAcquireObject 9416 AcpiOsReleaseObject 9417 9418Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to 9419return 9420and restore a flags parameter. This fits better with many OS lock models. 9421Note: the current execution state (interrupt handler or not) is no longer 9422passed to these interfaces. If necessary, the OSL must determine this 9423state 9424by itself, a simple and fast operation. With assistance from Alexey 9425Starikovskiy. 9426 9427Fixed a problem in the ACPI table handling where a valid XSDT was assumed 9428present if the revision of the RSDP was 2 or greater. According to the 9429ACPI 9430specification, the XSDT is optional in all cases, and the table manager 9431therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 9432Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs 9433contain 9434only the RSDT. 9435 9436Fixed an interpreter problem with the Mid() operator in the case of an 9437input 9438string where the resulting output string is of zero length. It now 9439correctly 9440returns a valid, null terminated string object instead of a string object 9441with a null pointer. 9442 9443Fixed a problem with the control method argument handling to allow a 9444store 9445to an Arg object that already contains an object of type Device. The 9446Device 9447object is now correctly overwritten. Previously, an error was returned. 9448 9449 9450Enhanced the debugger Find command to emit object values in addition to 9451the 9452found object pathnames. The output format is the same as the dump 9453namespace 9454command. 9455 9456Enhanced the debugger Set command. It now has the ability to set the 9457value 9458of any Named integer object in the namespace (Previously, only method 9459locals 9460and args could be set.) 9461 9462Code and Data Size: Current and previous core subsystem library sizes are 9463shown below. These are the code and data sizes for the acpica.lib 9464produced 9465by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9466any ACPI driver or OSPM code. The debug version of the code includes the 9467debug output trace mechanism and has a much larger code and data size. 9468Note 9469that these values will vary depending on the efficiency of the compiler 9470and 9471the compiler options used during generation. 9472 9473 Previous Release: 9474 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 9475 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 9476 Current Release: 9477 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 9478 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 9479 9480 94812) iASL Compiler/Disassembler: 9482 9483Fixed a regression in the disassembler where if/else/while constructs 9484were 9485output incorrectly. This problem was introduced in the previous release 9486(20050526). This problem also affected the single-step disassembly in the 9487debugger. 9488 9489Fixed a problem where compiling the reserved _OSI method would randomly 9490(but 9491rarely) produce compile errors. 9492 9493Enhanced the disassembler to emit compilable code in the face of 9494incorrect 9495AML resource descriptors. If the optional ResourceSourceIndex is present, 9496but the ResourceSource is not, do not emit the ResourceSourceIndex in the 9497disassembly. Otherwise, the resulting code cannot be compiled without 9498errors. 9499 9500---------------------------------------- 950126 May 2005. Summary of changes for version 20050526: 9502 95031) ACPI CA Core Subsystem: 9504 9505Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 9506the module level (not within a control method.) These opcodes are 9507executed 9508exactly once at the time the table is loaded. This type of code was legal 9509up 9510until the release of ACPI 2.0B (2002) and is now supported within ACPI CA 9511in 9512order to provide backwards compatibility with earlier BIOS 9513implementations. 9514This eliminates the "Encountered executable code at module level" warning 9515that was previously generated upon detection of such code. 9516 9517Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 9518inadvertently be generated during the lookup of namespace objects in the 9519second pass parse of ACPI tables and control methods. It appears that 9520this 9521problem could occur during the resolution of forward references to 9522namespace 9523objects. 9524 9525Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 9526corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 9527allows the deadlock detection debug code to be compiled out in the normal 9528case, improving mutex performance (and overall subsystem performance) 9529considerably. 9530 9531Implemented a handful of miscellaneous fixes for possible memory leaks on 9532error conditions and error handling control paths. These fixes were 9533suggested by FreeBSD and the Coverity Prevent source code analysis tool. 9534 9535Added a check for a null RSDT pointer in AcpiGetFirmwareTable 9536(tbxfroot.c) 9537to prevent a fault in this error case. 9538 9539Code and Data Size: Current and previous core subsystem library sizes are 9540shown below. These are the code and data sizes for the acpica.lib 9541produced 9542by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9543any ACPI driver or OSPM code. The debug version of the code includes the 9544debug output trace mechanism and has a much larger code and data size. 9545Note 9546that these values will vary depending on the efficiency of the compiler 9547and 9548the compiler options used during generation. 9549 9550 Previous Release: 9551 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 9552 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 9553 Current Release: 9554 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 9555 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 9556 9557 95582) iASL Compiler/Disassembler: 9559 9560Implemented support to allow Type 1 and Type 2 ASL operators to appear at 9561the module level (not within a control method.) These operators will be 9562executed once at the time the table is loaded. This type of code was 9563legal 9564up until the release of ACPI 2.0B (2002) and is now supported by the iASL 9565compiler in order to provide backwards compatibility with earlier BIOS 9566ASL 9567code. 9568 9569The ACPI integer width (specified via the table revision ID or the -r 9570override, 32 or 64 bits) is now used internally during compile-time 9571constant 9572folding to ensure that constants are truncated to 32 bits if necessary. 9573Previously, the revision ID value was only emitted in the AML table 9574header. 9575 9576An error message is now generated for the Mutex and Method operators if 9577the 9578SyncLevel parameter is outside the legal range of 0 through 15. 9579 9580Fixed a problem with the Method operator ParameterTypes list handling 9581(ACPI 95823.0). Previously, more than 2 types or 2 arguments generated a syntax 9583error. 9584The actual underlying implementation of method argument typechecking is 9585still under development, however. 9586 9587---------------------------------------- 958813 May 2005. Summary of changes for version 20050513: 9589 95901) ACPI CA Core Subsystem: 9591 9592Implemented support for PCI Express root bridges -- added support for 9593device 9594PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 9595 9596The interpreter now automatically truncates incoming 64-bit constants to 959732 9598bits if currently executing out of a 32-bit ACPI table (Revision < 2). 9599This 9600also affects the iASL compiler constant folding. (Note: as per below, the 9601iASL compiler no longer allows 64-bit constants within 32-bit tables.) 9602 9603Fixed a problem where string and buffer objects with "static" pointers 9604(pointers to initialization data within an ACPI table) were not handled 9605consistently. The internal object copy operation now always copies the 9606data 9607to a newly allocated buffer, regardless of whether the source object is 9608static or not. 9609 9610Fixed a problem with the FromBCD operator where an implicit result 9611conversion was improperly performed while storing the result to the 9612target 9613operand. Since this is an "explicit conversion" operator, the implicit 9614conversion should never be performed on the output. 9615 9616Fixed a problem with the CopyObject operator where a copy to an existing 9617named object did not always completely overwrite the existing object 9618stored 9619at name. Specifically, a buffer-to-buffer copy did not delete the 9620existing 9621buffer. 9622 9623Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces 9624and 9625structs for consistency. 9626 9627Code and Data Size: Current and previous core subsystem library sizes are 9628shown below. These are the code and data sizes for the acpica.lib 9629produced 9630by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9631any ACPI driver or OSPM code. The debug version of the code includes the 9632debug output trace mechanism and has a much larger code and data size. 9633Note 9634that these values will vary depending on the efficiency of the compiler 9635and 9636the compiler options used during generation. 9637 9638 Previous Release: 9639 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 9640 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 9641 Current Release: (Same sizes) 9642 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 9643 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 9644 9645 96462) iASL Compiler/Disassembler: 9647 9648The compiler now emits a warning if an attempt is made to generate a 64- 9649bit 9650integer constant from within a 32-bit ACPI table (Revision < 2). The 9651integer 9652is truncated to 32 bits. 9653 9654Fixed a problem with large package objects: if the static length of the 9655package is greater than 255, the "variable length package" opcode is 9656emitted. Previously, this caused an error. This requires an update to the 9657ACPI spec, since it currently (incorrectly) states that packages larger 9658than 9659255 elements are not allowed. 9660 9661The disassembler now correctly handles variable length packages and 9662packages 9663larger than 255 elements. 9664 9665---------------------------------------- 966608 April 2005. Summary of changes for version 20050408: 9667 96681) ACPI CA Core Subsystem: 9669 9670Fixed three cases in the interpreter where an "index" argument to an ASL 9671function was still (internally) 32 bits instead of the required 64 bits. 9672This was the Index argument to the Index, Mid, and Match operators. 9673 9674The "strupr" function is now permanently local (AcpiUtStrupr), since this 9675is 9676not a POSIX-defined function and not present in most kernel-level C 9677libraries. All references to the C library strupr function have been 9678removed 9679from the headers. 9680 9681Completed the deployment of static functions/prototypes. All prototypes 9682with 9683the static attribute have been moved from the headers to the owning C 9684file. 9685 9686Implemented an extract option (-e) for the AcpiBin utility (AML binary 9687utility). This option allows the utility to extract individual ACPI 9688tables 9689from the output of AcpiDmp. It provides the same functionality of the 9690acpixtract.pl perl script without the worry of setting the correct perl 9691options. AcpiBin runs on Windows and has not yet been generated/validated 9692in 9693the Linux/Unix environment (but should be soon). 9694 9695Updated and fixed the table dump option for AcpiBin (-d). This option 9696converts a single ACPI table to a hex/ascii file, similar to the output 9697of 9698AcpiDmp. 9699 9700Code and Data Size: Current and previous core subsystem library sizes are 9701shown below. These are the code and data sizes for the acpica.lib 9702produced 9703by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9704any ACPI driver or OSPM code. The debug version of the code includes the 9705debug output trace mechanism and has a much larger code and data size. 9706Note 9707that these values will vary depending on the efficiency of the compiler 9708and 9709the compiler options used during generation. 9710 9711 Previous Release: 9712 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 9713 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 9714 Current Release: 9715 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 9716 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 9717 9718 97192) iASL Compiler/Disassembler: 9720 9721Disassembler fix: Added a check to ensure that the table length found in 9722the 9723ACPI table header within the input file is not longer than the actual 9724input 9725file size. This indicates some kind of file or table corruption. 9726 9727---------------------------------------- 972829 March 2005. Summary of changes for version 20050329: 9729 97301) ACPI CA Core Subsystem: 9731 9732An error is now generated if an attempt is made to create a Buffer Field 9733of 9734length zero (A CreateField with a length operand of zero.) 9735 9736The interpreter now issues a warning whenever executable code at the 9737module 9738level is detected during ACPI table load. This will give some idea of the 9739prevalence of this type of code. 9740 9741Implemented support for references to named objects (other than control 9742methods) within package objects. 9743 9744Enhanced package object output for the debug object. Package objects are 9745now 9746completely dumped, showing all elements. 9747 9748Enhanced miscellaneous object output for the debug object. Any object can 9749now be written to the debug object (for example, a device object can be 9750written, and the type of the object will be displayed.) 9751 9752The "static" qualifier has been added to all local functions across both 9753the 9754core subsystem and the iASL compiler. 9755 9756The number of "long" lines (> 80 chars) within the source has been 9757significantly reduced, by about 1/3. 9758 9759Cleaned up all header files to ensure that all CA/iASL functions are 9760prototyped (even static functions) and the formatting is consistent. 9761 9762Two new header files have been added, acopcode.h and acnames.h. 9763 9764Removed several obsolete functions that were no longer used. 9765 9766Code and Data Size: Current and previous core subsystem library sizes are 9767shown below. These are the code and data sizes for the acpica.lib 9768produced 9769by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9770any ACPI driver or OSPM code. The debug version of the code includes the 9771debug output trace mechanism and has a much larger code and data size. 9772Note 9773that these values will vary depending on the efficiency of the compiler 9774and 9775the compiler options used during generation. 9776 9777 Previous Release: 9778 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 9779 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 9780 Current Release: 9781 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 9782 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 9783 9784 9785 97862) iASL Compiler/Disassembler: 9787 9788Fixed a problem with the resource descriptor generation/support. For the 9789ResourceSourceIndex and the ResourceSource fields, both must be present, 9790or 9791both must be not present - can't have one without the other. 9792 9793The compiler now returns non-zero from the main procedure if any errors 9794have 9795occurred during the compilation. 9796 9797 9798---------------------------------------- 979909 March 2005. Summary of changes for version 20050309: 9800 98011) ACPI CA Core Subsystem: 9802 9803The string-to-buffer implicit conversion code has been modified again 9804after 9805a change to the ACPI specification. In order to match the behavior of 9806the 9807other major ACPI implementation, the target buffer is no longer truncated 9808if 9809the source string is smaller than an existing target buffer. This change 9810requires an update to the ACPI spec, and should eliminate the recent 9811AE_AML_BUFFER_LIMIT issues. 9812 9813The "implicit return" support was rewritten to a new algorithm that 9814solves 9815the general case. Rather than attempt to determine when a method is about 9816to 9817exit, the result of every ASL operator is saved momentarily until the 9818very 9819next ASL operator is executed. Therefore, no matter how the method exits, 9820there will always be a saved implicit return value. This feature is only 9821enabled with the AcpiGbl_EnableInterpreterSlack flag, and should 9822eliminate 9823AE_AML_NO_RETURN_VALUE errors when enabled. 9824 9825Implemented implicit conversion support for the predicate (operand) of 9826the 9827If, Else, and While operators. String and Buffer arguments are 9828automatically 9829converted to Integers. 9830 9831Changed the string-to-integer conversion behavior to match the new ACPI 9832errata: "If no integer object exists, a new integer is created. The ASCII 9833string is interpreted as a hexadecimal constant. Each string character is 9834interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 9835with the first character as the most significant digit, and ending with 9836the 9837first non-hexadecimal character or end-of-string." This means that the 9838first 9839non-hex character terminates the conversion and this is the code that was 9840changed. 9841 9842Fixed a problem where the ObjectType operator would fail (fault) when 9843used 9844on an Index of a Package which pointed to a null package element. The 9845operator now properly returns zero (Uninitialized) in this case. 9846 9847Fixed a problem where the While operator used excessive memory by not 9848properly popping the result stack during execution. There was no memory 9849leak 9850after execution, however. (Code provided by Valery Podrezov.) 9851 9852Fixed a problem where references to control methods within Package 9853objects 9854caused the method to be invoked, instead of producing a reference object 9855pointing to the method. 9856 9857Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) 9858to 9859improve performance and reduce code size. (Code provided by Alexey 9860Starikovskiy.) 9861 9862Code and Data Size: Current and previous core subsystem library sizes are 9863shown below. These are the code and data sizes for the acpica.lib 9864produced 9865by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9866any ACPI driver or OSPM code. The debug version of the code includes the 9867debug output trace mechanism and has a much larger code and data size. 9868Note 9869that these values will vary depending on the efficiency of the compiler 9870and 9871the compiler options used during generation. 9872 9873 Previous Release: 9874 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 9875 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 9876 Current Release: 9877 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 9878 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 9879 9880 98812) iASL Compiler/Disassembler: 9882 9883Fixed a problem with the Return operator with no arguments. Since the AML 9884grammar for the byte encoding requires an operand for the Return opcode, 9885the 9886compiler now emits a Return(Zero) for this case. An ACPI specification 9887update has been written for this case. 9888 9889For tables other than the DSDT, namepath optimization is automatically 9890disabled. This is because SSDTs can be loaded anywhere in the namespace, 9891the 9892compiler has no knowledge of where, and thus cannot optimize namepaths. 9893 9894Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 9895inadvertently omitted from the ACPI specification, and will require an 9896update to the spec. 9897 9898The source file scan for ASCII characters is now optional (-a). This 9899change 9900was made because some vendors place non-ascii characters within comments. 9901However, the scan is simply a brute-force byte compare to ensure all 9902characters in the file are in the range 0x00 to 0x7F. 9903 9904Fixed a problem with the CondRefOf operator where the compiler was 9905inappropriately checking for the existence of the target. Since the point 9906of 9907the operator is to check for the existence of the target at run-time, the 9908compiler no longer checks for the target existence. 9909 9910Fixed a problem where errors generated from the internal AML interpreter 9911during constant folding were not handled properly, causing a fault. 9912 9913Fixed a problem with overly aggressive range checking for the Stall 9914operator. The valid range (max 255) is now only checked if the operand is 9915of 9916type Integer. All other operand types cannot be statically checked. 9917 9918Fixed a problem where control method references within the RefOf, 9919DeRefOf, 9920and ObjectType operators were not treated properly. They are now treated 9921as 9922actual references, not method invocations. 9923 9924Fixed and enhanced the "list namespace" option (-ln). This option was 9925broken 9926a number of releases ago. 9927 9928Improved error handling for the Field, IndexField, and BankField 9929operators. 9930The compiler now cleanly reports and recovers from errors in the field 9931component (FieldUnit) list. 9932 9933Fixed a disassembler problem where the optional ResourceDescriptor fields 9934TRS and TTP were not always handled correctly. 9935 9936Disassembler - Comments in output now use "//" instead of "/*" 9937 9938---------------------------------------- 993928 February 2005. Summary of changes for version 20050228: 9940 99411) ACPI CA Core Subsystem: 9942 9943Fixed a problem where the result of an Index() operator (an object 9944reference) must increment the reference count on the target object for 9945the 9946life of the object reference. 9947 9948Implemented AML Interpreter and Debugger support for the new ACPI 3.0 9949Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and 9950WordSpace 9951resource descriptors. 9952 9953Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 9954Space Descriptor" string, indicating interpreter support for the 9955descriptors 9956above. 9957 9958Implemented header support for the new ACPI 3.0 FADT flag bits. 9959 9960Implemented header support for the new ACPI 3.0 PCI Express bits for the 9961PM1 9962status/enable registers. 9963 9964Updated header support for the MADT processor local Apic struct and MADT 9965platform interrupt source struct for new ACPI 3.0 fields. 9966 9967Implemented header support for the SRAT and SLIT ACPI tables. 9968 9969Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" 9970flag 9971at runtime. 9972 9973Code and Data Size: Current and previous core subsystem library sizes are 9974shown below. These are the code and data sizes for the acpica.lib 9975produced 9976by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9977any ACPI driver or OSPM code. The debug version of the code includes the 9978debug output trace mechanism and has a much larger code and data size. 9979Note 9980that these values will vary depending on the efficiency of the compiler 9981and 9982the compiler options used during generation. 9983 9984 Previous Release: 9985 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 9986 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 9987 Current Release: 9988 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 9989 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 9990 9991 99922) iASL Compiler/Disassembler: 9993 9994Fixed a problem with the internal 64-bit String-to-integer conversion 9995with 9996strings less than two characters long. 9997 9998Fixed a problem with constant folding where the result of the Index() 9999operator can not be considered a constant. This means that Index() cannot 10000be 10001a type3 opcode and this will require an update to the ACPI specification. 10002 10003Disassembler: Implemented support for the TTP, MTP, and TRS resource 10004descriptor fields. These fields were inadvertently ignored and not output 10005in 10006the disassembly of the resource descriptor. 10007 10008 10009 ---------------------------------------- 1001011 February 2005. Summary of changes for version 20050211: 10011 100121) ACPI CA Core Subsystem: 10013 10014Implemented ACPI 3.0 support for implicit conversion within the Match() 10015operator. MatchObjects can now be of type integer, buffer, or string 10016instead 10017of just type integer. Package elements are implicitly converted to the 10018type 10019of the MatchObject. This change aligns the behavior of Match() with the 10020behavior of the other logical operators (LLess(), etc.) It also requires 10021an 10022errata change to the ACPI specification as this support was intended for 10023ACPI 3.0, but was inadvertently omitted. 10024 10025Fixed a problem with the internal implicit "to buffer" conversion. 10026Strings 10027that are converted to buffers will cause buffer truncation if the string 10028is 10029smaller than the target buffer. Integers that are converted to buffers 10030will 10031not cause buffer truncation, only zero extension (both as per the ACPI 10032spec.) The problem was introduced when code was added to truncate the 10033buffer, but this should not be performed in all cases, only the string 10034case. 10035 10036Fixed a problem with the Buffer and Package operators where the 10037interpreter 10038would get confused if two such operators were used as operands to an ASL 10039operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 10040stack was not being popped after the execution of these operators, 10041resulting 10042in an AE_NO_RETURN_VALUE exception. 10043 10044Fixed a problem with constructs of the form Store(Index(...),...). The 10045reference object returned from Index was inadvertently resolved to an 10046actual 10047value. This problem was introduced in version 20050114 when the behavior 10048of 10049Store() was modified to restrict the object types that can be used as the 10050source operand (to match the ACPI specification.) 10051 10052Reduced excessive stack use within the AcpiGetObjectInfo procedure. 10053 10054Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 10055 10056Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 10057 10058Code and Data Size: Current and previous core subsystem library sizes are 10059shown below. These are the code and data sizes for the acpica.lib 10060produced 10061by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10062any ACPI driver or OSPM code. The debug version of the code includes the 10063debug output trace mechanism and has a much larger code and data size. 10064Note 10065that these values will vary depending on the efficiency of the compiler 10066and 10067the compiler options used during generation. 10068 10069 Previous Release: 10070 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 10071 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 10072 Current Release: 10073 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 10074 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 10075 10076 100772) iASL Compiler/Disassembler: 10078 10079Fixed a code generation problem in the constant folding optimization code 10080where incorrect code was generated if a constant was reduced to a buffer 10081object (i.e., a reduced type 5 opcode.) 10082 10083Fixed a typechecking problem for the ToBuffer operator. Caused by an 10084incorrect return type in the internal opcode information table. 10085 10086---------------------------------------- 1008725 January 2005. Summary of changes for version 20050125: 10088 100891) ACPI CA Core Subsystem: 10090 10091Fixed a recently introduced problem with the Global Lock where the 10092underlying semaphore was not created. This problem was introduced in 10093version 20050114, and caused an AE_AML_NO_OPERAND exception during an 10094Acquire() operation on _GL. 10095 10096The local object cache is now optional, and is disabled by default. Both 10097AcpiExec and the iASL compiler enable the cache because they run in user 10098mode and this enhances their performance. #define 10099ACPI_ENABLE_OBJECT_CACHE 10100to enable the local cache. 10101 10102Fixed an issue in the internal function AcpiUtEvaluateObject concerning 10103the 10104optional "implicit return" support where an error was returned if no 10105return 10106object was expected, but one was implicitly returned. AE_OK is now 10107returned 10108in this case and the implicitly returned object is deleted. 10109AcpiUtEvaluateObject is only occasionally used, and only to execute 10110reserved 10111methods such as _STA and _INI where the return type is known up front. 10112 10113Fixed a few issues with the internal convert-to-integer code. It now 10114returns 10115an error if an attempt is made to convert a null string, a string of only 10116blanks/tabs, or a zero-length buffer. This affects both implicit 10117conversion 10118and explicit conversion via the ToInteger() operator. 10119 10120The internal debug code in AcpiUtAcquireMutex has been commented out. It 10121is 10122not needed for normal operation and should increase the performance of 10123the 10124entire subsystem. The code remains in case it is needed for debug 10125purposes 10126again. 10127 10128The AcpiExec source and makefile are included in the Unix/Linux package 10129for 10130the first time. 10131 10132Code and Data Size: Current and previous core subsystem library sizes are 10133shown below. These are the code and data sizes for the acpica.lib 10134produced 10135by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10136any ACPI driver or OSPM code. The debug version of the code includes the 10137debug output trace mechanism and has a much larger code and data size. 10138Note 10139that these values will vary depending on the efficiency of the compiler 10140and 10141the compiler options used during generation. 10142 10143 Previous Release: 10144 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 10145 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 10146 Current Release: 10147 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 10148 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 10149 101502) iASL Compiler/Disassembler: 10151 10152Switch/Case support: A warning is now issued if the type of the Switch 10153value 10154cannot be determined at compile time. For example, Switch(Arg0) will 10155generate the warning, and the type is assumed to be an integer. As per 10156the 10157ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate 10158the 10159warning. 10160 10161Switch/Case support: Implemented support for buffer and string objects as 10162the switch value. This is an ACPI 3.0 feature, now that LEqual supports 10163buffers and strings. 10164 10165Switch/Case support: The emitted code for the LEqual() comparisons now 10166uses 10167the switch value as the first operand, not the second. The case value is 10168now 10169the second operand, and this allows the case value to be implicitly 10170converted to the type of the switch value, not the other way around. 10171 10172Switch/Case support: Temporary variables are now emitted immediately 10173within 10174the control method, not at the global level. This means that there are 10175now 1017636 temps available per-method, not 36 temps per-module as was the case 10177with 10178the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 10179 10180---------------------------------------- 1018114 January 2005. Summary of changes for version 20050114: 10182 10183Added 2005 copyright to all module headers. This affects every module in 10184the core subsystem, iASL compiler, and the utilities. 10185 101861) ACPI CA Core Subsystem: 10187 10188Fixed an issue with the String-to-Buffer conversion code where the string 10189null terminator was not included in the buffer after conversion, but 10190there 10191is existing ASL that assumes the string null terminator is included. This 10192is 10193the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 10194introduced in the previous version when the code was updated to correctly 10195set the converted buffer size as per the ACPI specification. The ACPI 10196spec 10197is ambiguous and will be updated to specify that the null terminator must 10198be 10199included in the converted buffer. This also affects the ToBuffer() ASL 10200operator. 10201 10202Fixed a problem with the Mid() ASL/AML operator where it did not work 10203correctly on Buffer objects. Newly created sub-buffers were not being 10204marked 10205as initialized. 10206 10207 10208Fixed a problem in AcpiTbFindTable where incorrect string compares were 10209performed on the OemId and OemTableId table header fields. These fields 10210are 10211not null terminated, so strncmp is now used instead of strcmp. 10212 10213Implemented a restriction on the Store() ASL/AML operator to align the 10214behavior with the ACPI specification. Previously, any object could be 10215used 10216as the source operand. Now, the only objects that may be used are 10217Integers, 10218Buffers, Strings, Packages, Object References, and DDB Handles. If 10219necessary, the original behavior can be restored by enabling the 10220EnableInterpreterSlack flag. 10221 10222Enhanced the optional "implicit return" support to allow an implicit 10223return 10224value from methods that are invoked externally via the AcpiEvaluateObject 10225interface. This enables implicit returns from the _STA and _INI methods, 10226for example. 10227 10228Changed the Revision() ASL/AML operator to return the current version of 10229the 10230AML interpreter, in the YYYYMMDD format. Previously, it incorrectly 10231returned 10232the supported ACPI version (This is the function of the _REV method). 10233 10234Updated the _REV predefined method to return the currently supported 10235version 10236of ACPI, now 3. 10237 10238Implemented batch mode option for the AcpiExec utility (-b). 10239 10240Code and Data Size: Current and previous core subsystem library sizes are 10241shown below. These are the code and data sizes for the acpica.lib 10242produced 10243by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10244any ACPI driver or OSPM code. The debug version of the code includes the 10245debug output trace mechanism and has a much larger code and data size. 10246Note 10247that these values will vary depending on the efficiency of the compiler 10248and 10249the compiler options used during generation. 10250 10251 Previous Release: 10252 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10253 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 10254 Current Release: 10255 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 10256 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 10257 10258---------------------------------------- 1025910 December 2004. Summary of changes for version 20041210: 10260 10261ACPI 3.0 support is nearing completion in both the iASL compiler and the 10262ACPI CA core subsystem. 10263 102641) ACPI CA Core Subsystem: 10265 10266Fixed a problem in the ToDecimalString operator where the resulting 10267string 10268length was incorrectly calculated. The length is now calculated exactly, 10269eliminating incorrect AE_STRING_LIMIT exceptions. 10270 10271Fixed a problem in the ToHexString operator to allow a maximum 200 10272character 10273string to be produced. 10274 10275Fixed a problem in the internal string-to-buffer and buffer-to-buffer 10276copy 10277routine where the length of the resulting buffer was not truncated to the 10278new size (if the target buffer already existed). 10279 10280Code and Data Size: Current and previous core subsystem library sizes are 10281shown below. These are the code and data sizes for the acpica.lib 10282produced 10283by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10284any ACPI driver or OSPM code. The debug version of the code includes the 10285debug output trace mechanism and has a much larger code and data size. 10286Note 10287that these values will vary depending on the efficiency of the compiler 10288and 10289the compiler options used during generation. 10290 10291 Previous Release: 10292 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10293 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 10294 Current Release: 10295 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10296 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 10297 10298 102992) iASL Compiler/Disassembler: 10300 10301Implemented the new ACPI 3.0 resource template macros - DWordSpace, 10302ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 10303Includes support in the disassembler. 10304 10305Implemented support for the new (ACPI 3.0) parameter to the Register 10306macro, 10307AccessSize. 10308 10309Fixed a problem where the _HE resource name for the Interrupt macro was 10310referencing bit 0 instead of bit 1. 10311 10312Implemented check for maximum 255 interrupts in the Interrupt macro. 10313 10314Fixed a problem with the predefined resource descriptor names where 10315incorrect AML code was generated if the offset within the resource buffer 10316was 0 or 1. The optimizer shortened the AML code to a single byte opcode 10317but did not update the surrounding package lengths. 10318 10319Changes to the Dma macro: All channels within the channel list must be 10320in 10321the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 10322optional (default is BusMaster). 10323 10324Implemented check for maximum 7 data bytes for the VendorShort macro. 10325 10326The ReadWrite parameter is now optional for the Memory32 and similar 10327macros. 10328 10329---------------------------------------- 1033003 December 2004. Summary of changes for version 20041203: 10331 103321) ACPI CA Core Subsystem: 10333 10334The low-level field insertion/extraction code (exfldio) has been 10335completely 10336rewritten to eliminate unnecessary complexity, bugs, and boundary 10337conditions. 10338 10339Fixed a problem in the ToInteger, ToBuffer, ToHexString, and 10340ToDecimalString 10341operators where the input operand could be inadvertently deleted if no 10342conversion was necessary (e.g., if the input to ToInteger was an Integer 10343object.) 10344 10345Fixed a problem with the ToDecimalString and ToHexString where an 10346incorrect 10347exception code was returned if the resulting string would be > 200 chars. 10348AE_STRING_LIMIT is now returned. 10349 10350Fixed a problem with the Concatenate operator where AE_OK was always 10351returned, even if the operation failed. 10352 10353Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 10354semaphores to be allocated. 10355 10356Code and Data Size: Current and previous core subsystem library sizes are 10357shown below. These are the code and data sizes for the acpica.lib 10358produced 10359by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10360any ACPI driver or OSPM code. The debug version of the code includes the 10361debug output trace mechanism and has a much larger code and data size. 10362Note 10363that these values will vary depending on the efficiency of the compiler 10364and 10365the compiler options used during generation. 10366 10367 Previous Release: 10368 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10369 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10370 Current Release: 10371 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10372 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 10373 10374 103752) iASL Compiler/Disassembler: 10376 10377Fixed typechecking for the ObjectType and SizeOf operators. Problem was 10378recently introduced in 20041119. 10379 10380Fixed a problem with the ToUUID macro where the upper nybble of each 10381buffer 10382byte was inadvertently set to zero. 10383 10384---------------------------------------- 1038519 November 2004. Summary of changes for version 20041119: 10386 103871) ACPI CA Core Subsystem: 10388 10389Fixed a problem in the internal ConvertToInteger routine where new 10390integers 10391were not truncated to 32 bits for 32-bit ACPI tables. This routine 10392converts 10393buffers and strings to integers. 10394 10395Implemented support to store a value to an Index() on a String object. 10396This 10397is an ACPI 2.0 feature that had not yet been implemented. 10398 10399Implemented new behavior for storing objects to individual package 10400elements 10401(via the Index() operator). The previous behavior was to invoke the 10402implicit 10403conversion rules if an object was already present at the index. The new 10404behavior is to simply delete any existing object and directly store the 10405new 10406object. Although the ACPI specification seems unclear on this subject, 10407other 10408ACPI implementations behave in this manner. (This is the root of the 10409AE_BAD_HEX_CONSTANT issue.) 10410 10411Modified the RSDP memory scan mechanism to support the extended checksum 10412for 10413ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 10414RSDP signature is found with a valid checksum. 10415 10416Code and Data Size: Current and previous core subsystem library sizes are 10417shown below. These are the code and data sizes for the acpica.lib 10418produced 10419by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10420any ACPI driver or OSPM code. The debug version of the code includes the 10421debug output trace mechanism and has a much larger code and data size. 10422Note 10423that these values will vary depending on the efficiency of the compiler 10424and 10425the compiler options used during generation. 10426 10427 Previous Release: 10428 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10429 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10430 Current Release: 10431 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10432 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10433 10434 104352) iASL Compiler/Disassembler: 10436 10437Fixed a missing semicolon in the aslcompiler.y file. 10438 10439---------------------------------------- 1044005 November 2004. Summary of changes for version 20041105: 10441 104421) ACPI CA Core Subsystem: 10443 10444Implemented support for FADT revision 2. This was an interim table 10445(between 10446ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 10447 10448Implemented optional support to allow uninitialized LocalX and ArgX 10449variables in a control method. The variables are initialized to an 10450Integer 10451object with a value of zero. This support is enabled by setting the 10452AcpiGbl_EnableInterpreterSlack flag to TRUE. 10453 10454Implemented support for Integer objects for the SizeOf operator. Either 104554 10456or 8 is returned, depending on the current integer size (32-bit or 64- 10457bit, 10458depending on the parent table revision). 10459 10460Fixed a problem in the implementation of the SizeOf and ObjectType 10461operators 10462where the operand was resolved to a value too early, causing incorrect 10463return values for some objects. 10464 10465Fixed some possible memory leaks during exceptional conditions. 10466 10467Code and Data Size: Current and previous core subsystem library sizes are 10468shown below. These are the code and data sizes for the acpica.lib 10469produced 10470by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10471any ACPI driver or OSPM code. The debug version of the code includes the 10472debug output trace mechanism and has a much larger code and data size. 10473Note 10474that these values will vary depending on the efficiency of the compiler 10475and 10476the compiler options used during generation. 10477 10478 Previous Release: 10479 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 10480 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 10481 Current Release: 10482 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10483 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10484 10485 104862) iASL Compiler/Disassembler: 10487 10488Implemented support for all ACPI 3.0 reserved names and methods. 10489 10490Implemented all ACPI 3.0 grammar elements in the front-end, including 10491support for semicolons. 10492 10493Implemented the ACPI 3.0 Function() and ToUUID() macros 10494 10495Fixed a problem in the disassembler where a Scope() operator would not be 10496emitted properly if the target of the scope was in another table. 10497 10498---------------------------------------- 1049915 October 2004. Summary of changes for version 20041015: 10500 10501Note: ACPI CA is currently undergoing an in-depth and complete formal 10502evaluation to test/verify the following areas. Other suggestions are 10503welcome. This will result in an increase in the frequency of releases and 10504the number of bug fixes in the next few months. 10505 - Functional tests for all ASL/AML operators 10506 - All implicit/explicit type conversions 10507 - Bit fields and operation regions 10508 - 64-bit math support and 32-bit-only "truncated" math support 10509 - Exceptional conditions, both compiler and interpreter 10510 - Dynamic object deletion and memory leaks 10511 - ACPI 3.0 support when implemented 10512 - External interfaces to the ACPI subsystem 10513 10514 105151) ACPI CA Core Subsystem: 10516 10517Fixed two alignment issues on 64-bit platforms - within debug statements 10518in 10519AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the 10520Address 10521field within the non-aligned ACPI generic address structure. 10522 10523Fixed a problem in the Increment and Decrement operators where incorrect 10524operand resolution could result in the inadvertent modification of the 10525original integer when the integer is passed into another method as an 10526argument and the arg is then incremented/decremented. 10527 10528Fixed a problem in the FromBCD operator where the upper 32-bits of a 64- 10529bit 10530BCD number were truncated during conversion. 10531 10532Fixed a problem in the ToDecimal operator where the length of the 10533resulting 10534string could be set incorrectly too long if the input operand was a 10535Buffer 10536object. 10537 10538Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte 10539(0) 10540within a buffer would prematurely terminate a compare between buffer 10541objects. 10542 10543Added a check for string overflow (>200 characters as per the ACPI 10544specification) during the Concatenate operator with two string operands. 10545 10546Code and Data Size: Current and previous core subsystem library sizes are 10547shown below. These are the code and data sizes for the acpica.lib 10548produced 10549by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10550any ACPI driver or OSPM code. The debug version of the code includes the 10551debug output trace mechanism and has a much larger code and data size. 10552Note 10553that these values will vary depending on the efficiency of the compiler 10554and 10555the compiler options used during generation. 10556 10557 Previous Release: 10558 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 10559 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 10560 Current Release: 10561 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 10562 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 10563 10564 10565 105662) iASL Compiler/Disassembler: 10567 10568Allow the use of the ObjectType operator on uninitialized Locals and Args 10569(returns 0 as per the ACPI specification). 10570 10571Fixed a problem where the compiler would fault if there was a syntax 10572error 10573in the FieldName of all of the various CreateXXXField operators. 10574 10575Disallow the use of lower case letters within the EISAID macro, as per 10576the 10577ACPI specification. All EISAID strings must be of the form "UUUNNNN" 10578Where 10579U is an uppercase letter and N is a hex digit. 10580 10581 10582---------------------------------------- 1058306 October 2004. Summary of changes for version 20041006: 10584 105851) ACPI CA Core Subsystem: 10586 10587Implemented support for the ACPI 3.0 Timer operator. This ASL function 10588implements a 64-bit timer with 100 nanosecond granularity. 10589 10590Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 10591implement the ACPI 3.0 Timer operator. This allows the host OS to 10592implement 10593the timer with the best clock available. Also, it keeps the core 10594subsystem 10595out of the clock handling business, since the host OS (usually) performs 10596this function. 10597 10598Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 10599functions use a 64-bit address which is part of the packed ACPI Generic 10600Address Structure. Since the structure is non-aligned, the alignment 10601macros 10602are now used to extract the address to a local variable before use. 10603 10604Fixed a problem where the ToInteger operator assumed all input strings 10605were 10606hexadecimal. The operator now handles both decimal strings and hex 10607strings 10608(prefixed with "0x"). 10609 10610Fixed a problem where the string length in the string object created as a 10611result of the internal ConvertToString procedure could be incorrect. This 10612potentially affected all implicit conversions and also the 10613ToDecimalString 10614and ToHexString operators. 10615 10616Fixed two problems in the ToString operator. If the length parameter was 10617zero, an incorrect string object was created and the value of the input 10618length parameter was inadvertently changed from zero to Ones. 10619 10620Fixed a problem where the optional ResourceSource string in the 10621ExtendedIRQ 10622resource macro was ignored. 10623 10624Simplified the interfaces to the internal division functions, reducing 10625code 10626size and complexity. 10627 10628Code and Data Size: Current and previous core subsystem library sizes are 10629shown below. These are the code and data sizes for the acpica.lib 10630produced 10631by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10632any ACPI driver or OSPM code. The debug version of the code includes the 10633debug output trace mechanism and has a much larger code and data size. 10634Note 10635that these values will vary depending on the efficiency of the compiler 10636and 10637the compiler options used during generation. 10638 10639 Previous Release: 10640 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 10641 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 10642 Current Release: 10643 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 10644 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 10645 10646 106472) iASL Compiler/Disassembler: 10648 10649Implemented support for the ACPI 3.0 Timer operator. 10650 10651Fixed a problem where the Default() operator was inadvertently ignored in 10652a 10653Switch/Case block. This was a problem in the translation of the Switch 10654statement to If...Else pairs. 10655 10656Added support to allow a standalone Return operator, with no parentheses 10657(or 10658operands). 10659 10660Fixed a problem with code generation for the ElseIf operator where the 10661translated Else...If parse tree was improperly constructed leading to the 10662loss of some code. 10663 10664---------------------------------------- 1066522 September 2004. Summary of changes for version 20040922: 10666 106671) ACPI CA Core Subsystem: 10668 10669Fixed a problem with the implementation of the LNot() operator where 10670"Ones" 10671was not returned for the TRUE case. Changed the code to return Ones 10672instead 10673of (!Arg) which was usually 1. This change affects iASL constant folding 10674for 10675this operator also. 10676 10677Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was 10678not 10679initialized properly -- Now zero the entire buffer in this case where the 10680buffer already exists. 10681 10682Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 10683Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 10684related code considerably. This will require changes/updates to all OS 10685interface layers (OSLs.) 10686 10687Implemented a new external interface, AcpiInstallExceptionHandler, to 10688allow 10689a system exception handler to be installed. This handler is invoked upon 10690any 10691run-time exception that occurs during control method execution. 10692 10693Added support for the DSDT in AcpiTbFindTable. This allows the 10694DataTableRegion() operator to access the local copy of the DSDT. 10695 10696Code and Data Size: Current and previous core subsystem library sizes are 10697shown below. These are the code and data sizes for the acpica.lib 10698produced 10699by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10700any ACPI driver or OSPM code. The debug version of the code includes the 10701debug output trace mechanism and has a much larger code and data size. 10702Note 10703that these values will vary depending on the efficiency of the compiler 10704and 10705the compiler options used during generation. 10706 10707 Previous Release: 10708 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 10709 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 10710 Current Release: 10711 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 10712 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 10713 10714 107152) iASL Compiler/Disassembler: 10716 10717Fixed a problem with constant folding and the LNot operator. LNot was 10718returning 1 in the TRUE case, not Ones as per the ACPI specification. 10719This 10720could result in the generation of an incorrect folded/reduced constant. 10721 10722End-Of-File is now allowed within a "//"-style comment. A parse error no 10723longer occurs if such a comment is at the very end of the input ASL 10724source 10725file. 10726 10727Implemented the "-r" option to override the Revision in the table header. 10728The initial use of this option will be to simplify the evaluation of the 10729AML 10730interpreter by allowing a single ASL source module to be compiled for 10731either 1073232-bit or 64-bit integers. 10733 10734 10735---------------------------------------- 1073627 August 2004. Summary of changes for version 20040827: 10737 107381) ACPI CA Core Subsystem: 10739 10740- Implemented support for implicit object conversion in the non-numeric 10741logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, 10742and 10743LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 10744the second operand is implicitly converted on the fly to match the type 10745of 10746the first operand. For example: 10747 10748 LEqual (Source1, Source2) 10749 10750Source1 and Source2 must each evaluate to an integer, a string, or a 10751buffer. 10752The data type of Source1 dictates the required type of Source2. Source2 10753is 10754implicitly converted if necessary to match the type of Source1. 10755 10756- Updated and corrected the behavior of the string conversion support. 10757The 10758rules concerning conversion of buffers to strings (according to the ACPI 10759specification) are as follows: 10760 10761ToDecimalString - explicit byte-wise conversion of buffer to string of 10762decimal values (0-255) separated by commas. ToHexString - explicit byte- 10763wise 10764conversion of buffer to string of hex values (0-FF) separated by commas. 10765ToString - explicit byte-wise conversion of buffer to string. Byte-by- 10766byte 10767copy with no transform except NULL terminated. Any other implicit buffer- 10768to- 10769string conversion - byte-wise conversion of buffer to string of hex 10770values 10771(0-FF) separated by spaces. 10772 10773- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 10774 10775- Fixed a problem in AcpiNsGetPathnameLength where the returned length 10776was 10777one byte too short in the case of a node in the root scope. This could 10778cause a fault during debug output. 10779 10780- Code and Data Size: Current and previous core subsystem library sizes 10781are 10782shown below. These are the code and data sizes for the acpica.lib 10783produced 10784by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10785any ACPI driver or OSPM code. The debug version of the code includes the 10786debug output trace mechanism and has a much larger code and data size. 10787Note 10788that these values will vary depending on the efficiency of the compiler 10789and 10790the compiler options used during generation. 10791 10792 Previous Release: 10793 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 10794 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 10795 Current Release: 10796 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 10797 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 10798 10799 108002) iASL Compiler/Disassembler: 10801 10802- Fixed a Linux generation error. 10803 10804 10805---------------------------------------- 1080616 August 2004. Summary of changes for version 20040816: 10807 108081) ACPI CA Core Subsystem: 10809 10810Designed and implemented support within the AML interpreter for the so- 10811called "implicit return". This support returns the result of the last 10812ASL 10813operation within a control method, in the absence of an explicit Return() 10814operator. A few machines depend on this behavior, even though it is not 10815explicitly supported by the ASL language. It is optional support that 10816can 10817be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 10818 10819Removed support for the PCI_Config address space from the internal low 10820level 10821hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 10822support was not used internally, and would not work correctly anyway 10823because 10824the PCI bus number and segment number were not supported. There are 10825separate interfaces for PCI configuration space access because of the 10826unique 10827interface. 10828 10829Code and Data Size: Current and previous core subsystem library sizes are 10830shown below. These are the code and data sizes for the acpica.lib 10831produced 10832by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10833any ACPI driver or OSPM code. The debug version of the code includes the 10834debug output trace mechanism and has a much larger code and data size. 10835Note 10836that these values will vary depending on the efficiency of the compiler 10837and 10838the compiler options used during generation. 10839 10840 Previous Release: 10841 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 10842 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 10843 Current Release: 10844 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 10845 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 10846 10847 108482) iASL Compiler/Disassembler: 10849 10850Fixed a problem where constants in ASL expressions at the root level (not 10851within a control method) could be inadvertently truncated during code 10852generation. This problem was introduced in the 20040715 release. 10853 10854 10855---------------------------------------- 1085615 July 2004. Summary of changes for version 20040715: 10857 108581) ACPI CA Core Subsystem: 10859 10860Restructured the internal HW GPE interfaces to pass/track the current 10861state 10862of interrupts (enabled/disabled) in order to avoid possible deadlock and 10863increase flexibility of the interfaces. 10864 10865Implemented a "lexicographical compare" for String and Buffer objects 10866within 10867the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual - 10868- 10869as per further clarification to the ACPI specification. Behavior is 10870similar 10871to C library "strcmp". 10872 10873Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 10874external function. In the 32-bit non-debug case, the stack use has been 10875reduced from 168 bytes to 32 bytes. 10876 10877Deployed a new run-time configuration flag, 10878AcpiGbl_EnableInterpreterSlack, 10879whose purpose is to allow the AML interpreter to forgive certain bad AML 10880constructs. Default setting is FALSE. 10881 10882Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field 10883IO 10884support code. If enabled, it allows field access to go beyond the end of 10885a 10886region definition if the field is within the region length rounded up to 10887the 10888next access width boundary (a common coding error.) 10889 10890Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 10891ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, 10892these 10893symbols are lowercased by the latest version of the AcpiSrc tool. 10894 10895The prototypes for the PCI interfaces in acpiosxf.h have been updated to 10896rename "Register" to simply "Reg" to prevent certain compilers from 10897complaining. 10898 10899Code and Data Size: Current and previous core subsystem library sizes are 10900shown below. These are the code and data sizes for the acpica.lib 10901produced 10902by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10903any ACPI driver or OSPM code. The debug version of the code includes the 10904debug output trace mechanism and has a much larger code and data size. 10905Note 10906that these values will vary depending on the efficiency of the compiler 10907and 10908the compiler options used during generation. 10909 10910 Previous Release: 10911 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 10912 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 10913 Current Release: 10914 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 10915 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 10916 10917 109182) iASL Compiler/Disassembler: 10919 10920Implemented full support for Package objects within the Case() operator. 10921Note: The Break() operator is currently not supported within Case blocks 10922(TermLists) as there is some question about backward compatibility with 10923ACPI 109241.0 interpreters. 10925 10926 10927Fixed a problem where complex terms were not supported properly within 10928the 10929Switch() operator. 10930 10931Eliminated extraneous warning for compiler-emitted reserved names of the 10932form "_T_x". (Used in Switch/Case operators.) 10933 10934Eliminated optimization messages for "_T_x" objects and small constants 10935within the DefinitionBlock operator. 10936 10937 10938---------------------------------------- 1093915 June 2004. Summary of changes for version 20040615: 10940 109411) ACPI CA Core Subsystem: 10942 10943Implemented support for Buffer and String objects (as per ACPI 2.0) for 10944the 10945following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 10946LLessEqual. 10947 10948All directory names in the entire source package are lower case, as they 10949were in earlier releases. 10950 10951Implemented "Disassemble" command in the AML debugger that will 10952disassemble 10953a single control method. 10954 10955Code and Data Size: Current and previous core subsystem library sizes are 10956shown below. These are the code and data sizes for the acpica.lib 10957produced 10958by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10959any ACPI driver or OSPM code. The debug version of the code includes the 10960debug output trace mechanism and has a much larger code and data size. 10961Note 10962that these values will vary depending on the efficiency of the compiler 10963and 10964the compiler options used during generation. 10965 10966 Previous Release: 10967 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 10968 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 10969 10970 Current Release: 10971 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 10972 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 10973 10974 109752) iASL Compiler/Disassembler: 10976 10977Implemented support for Buffer and String objects (as per ACPI 2.0) for 10978the 10979following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 10980LLessEqual. 10981 10982All directory names in the entire source package are lower case, as they 10983were in earlier releases. 10984 10985Fixed a fault when using the -g or -d<nofilename> options if the FADT was 10986not found. 10987 10988Fixed an issue with the Windows version of the compiler where later 10989versions 10990of Windows place the FADT in the registry under the name "FADT" and not 10991"FACP" as earlier versions did. This applies when using the -g or - 10992d<nofilename> options. The compiler now looks for both strings as 10993necessary. 10994 10995Fixed a problem with compiler namepath optimization where a namepath 10996within 10997the Scope() operator could not be optimized if the namepath was a subpath 10998of 10999the current scope path. 11000 11001---------------------------------------- 1100227 May 2004. Summary of changes for version 20040527: 11003 110041) ACPI CA Core Subsystem: 11005 11006Completed a new design and implementation for EBDA (Extended BIOS Data 11007Area) 11008support in the RSDP scan code. The original code improperly scanned for 11009the 11010EBDA by simply scanning from memory location 0 to 0x400. The correct 11011method 11012is to first obtain the EBDA pointer from within the BIOS data area, then 11013scan 1K of memory starting at the EBDA pointer. There appear to be few 11014if 11015any machines that place the RSDP in the EBDA, however. 11016 11017Integrated a fix for a possible fault during evaluation of BufferField 11018arguments. Obsolete code that was causing the problem was removed. 11019 11020Found and fixed a problem in the Field Support Code where data could be 11021corrupted on a bit field read that starts on an aligned boundary but does 11022not end on an aligned boundary. Merged the read/write "datum length" 11023calculation code into a common procedure. 11024 11025Rolled in a couple of changes to the FreeBSD-specific header. 11026 11027 11028Code and Data Size: Current and previous core subsystem library sizes are 11029shown below. These are the code and data sizes for the acpica.lib 11030produced 11031by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11032any ACPI driver or OSPM code. The debug version of the code includes the 11033debug output trace mechanism and has a much larger code and data size. 11034Note 11035that these values will vary depending on the efficiency of the compiler 11036and 11037the compiler options used during generation. 11038 11039 Previous Release: 11040 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11041 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 11042 Current Release: 11043 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 11044 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 11045 11046 110472) iASL Compiler/Disassembler: 11048 11049Fixed a generation warning produced by some overly-verbose compilers for 11050a 1105164-bit constant. 11052 11053---------------------------------------- 1105414 May 2004. Summary of changes for version 20040514: 11055 110561) ACPI CA Core Subsystem: 11057 11058Fixed a problem where hardware GPE enable bits sometimes not set properly 11059during and after GPE method execution. Result of 04/27 changes. 11060 11061Removed extra "clear all GPEs" when sleeping/waking. 11062 11063Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 11064AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above 11065to 11066the new AcpiEv* calls as appropriate. 11067 11068ACPI_OS_NAME was removed from the OS-specific headers. The default name 11069is 11070now "Microsoft Windows NT" for maximum compatibility. However this can 11071be 11072changed by modifying the acconfig.h file. 11073 11074Allow a single invocation of AcpiInstallNotifyHandler for a handler that 11075traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 11076 11077Run _INI methods on ThermalZone objects. This is against the ACPI 11078specification, but there is apparently ASL code in the field that has 11079these 11080_INI methods, and apparently "other" AML interpreters execute them. 11081 11082Performed a full 16/32/64 bit lint that resulted in some small changes. 11083 11084Added a sleep simulation command to the AML debugger to test sleep code. 11085 11086Code and Data Size: Current and previous core subsystem library sizes are 11087shown below. These are the code and data sizes for the acpica.lib 11088produced 11089by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11090any ACPI driver or OSPM code. The debug version of the code includes the 11091debug output trace mechanism and has a much larger code and data size. 11092Note 11093that these values will vary depending on the efficiency of the compiler 11094and 11095the compiler options used during generation. 11096 11097 Previous Release: 11098 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11099 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 11100 Current Release: 11101 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11102 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 11103 11104---------------------------------------- 1110527 April 2004. Summary of changes for version 20040427: 11106 111071) ACPI CA Core Subsystem: 11108 11109Completed a major overhaul of the GPE handling within ACPI CA. There are 11110now three types of GPEs: wake-only, runtime-only, and combination 11111wake/run. 11112The only GPEs allowed to be combination wake/run are for button-style 11113devices such as a control-method power button, control-method sleep 11114button, 11115or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are 11116not 11117referenced by any _PRW methods are marked for "runtime" and hardware 11118enabled. Any GPE that is referenced by a _PRW method is marked for 11119"wake" 11120(and disabled at runtime). However, at sleep time, only those GPEs that 11121have been specifically enabled for wake via the AcpiEnableGpe interface 11122will 11123actually be hardware enabled. 11124 11125A new external interface has been added, AcpiSetGpeType(), that is meant 11126to 11127be used by device drivers to force a GPE to a particular type. It will 11128be 11129especially useful for the drivers for the button devices mentioned above. 11130 11131Completed restructuring of the ACPI CA initialization sequence so that 11132default operation region handlers are installed before GPEs are 11133initialized 11134and the _PRW methods are executed. This will prevent errors when the 11135_PRW 11136methods attempt to access system memory or I/O space. 11137 11138GPE enable/disable no longer reads the GPE enable register. We now keep 11139the 11140enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 11141thus no longer depend on the hardware to maintain these bits. 11142 11143Always clear the wake status and fixed/GPE status bits before sleep, even 11144for state S5. 11145 11146Improved the AML debugger output for displaying the GPE blocks and their 11147current status. 11148 11149Added new strings for the _OSI method, of the form "Windows 2001 SPx" 11150where 11151x = 0,1,2,3,4. 11152 11153Fixed a problem where the physical address was incorrectly calculated 11154when 11155the Load() operator was used to directly load from an Operation Region 11156(vs. 11157loading from a Field object.) Also added check for minimum table length 11158for 11159this case. 11160 11161Fix for multiple mutex acquisition. Restore original thread SyncLevel on 11162mutex release. 11163 11164Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 11165consistency with the other fields returned. 11166 11167Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 11168structure for each GPE in the system, so the size of this structure is 11169important. 11170 11171CPU stack requirement reduction: Cleaned up the method execution and 11172object 11173evaluation paths so that now a parameter structure is passed, instead of 11174copying the various method parameters over and over again. 11175 11176In evregion.c: Correctly exit and reenter the interpreter region if and 11177only if dispatching an operation region request to a user-installed 11178handler. 11179Do not exit/reenter when dispatching to a default handler (e.g., default 11180system memory or I/O handlers) 11181 11182 11183Notes for updating drivers for the new GPE support. The following 11184changes 11185must be made to ACPI-related device drivers that are attached to one or 11186more 11187GPEs: (This information will be added to the ACPI CA Programmer 11188Reference.) 11189 111901) AcpiInstallGpeHandler no longer automatically enables the GPE, you 11191must 11192explicitly call AcpiEnableGpe. 111932) There is a new interface called AcpiSetGpeType. This should be called 11194before enabling the GPE. Also, this interface will automatically disable 11195the GPE if it is currently enabled. 111963) AcpiEnableGpe no longer supports a GPE type flag. 11197 11198Specific drivers that must be changed: 111991) EC driver: 11200 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 11201AeGpeHandler, NULL); 11202 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 11203 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 11204 112052) Button Drivers (Power, Lid, Sleep): 11206Run _PRW method under parent device 11207If _PRW exists: /* This is a control-method button */ 11208 Extract GPE number and possibly GpeDevice 11209 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 11210 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 11211 11212For all other devices that have _PRWs, we automatically set the GPE type 11213to 11214ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. 11215This 11216must be done on a selective basis, usually requiring some kind of user 11217app 11218to allow the user to pick the wake devices. 11219 11220 11221Code and Data Size: Current and previous core subsystem library sizes are 11222shown below. These are the code and data sizes for the acpica.lib 11223produced 11224by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11225any ACPI driver or OSPM code. The debug version of the code includes the 11226debug output trace mechanism and has a much larger code and data size. 11227Note 11228that these values will vary depending on the efficiency of the compiler 11229and 11230the compiler options used during generation. 11231 11232 Previous Release: 11233 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 11234 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 11235 Current Release: 11236 11237 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11238 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 11239 11240 11241 11242---------------------------------------- 1124302 April 2004. Summary of changes for version 20040402: 11244 112451) ACPI CA Core Subsystem: 11246 11247Fixed an interpreter problem where an indirect store through an ArgX 11248parameter was incorrectly applying the "implicit conversion rules" during 11249the store. From the ACPI specification: "If the target is a method local 11250or 11251argument (LocalX or ArgX), no conversion is performed and the result is 11252stored directly to the target". The new behavior is to disable implicit 11253conversion during ALL stores to an ArgX. 11254 11255Changed the behavior of the _PRW method scan to ignore any and all errors 11256returned by a given _PRW. This prevents the scan from aborting from the 11257failure of any single _PRW. 11258 11259Moved the runtime configuration parameters from the global init procedure 11260to 11261static variables in acglobal.h. This will allow the host to override the 11262default values easily. 11263 11264Code and Data Size: Current and previous core subsystem library sizes are 11265shown below. These are the code and data sizes for the acpica.lib 11266produced 11267by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11268any ACPI driver or OSPM code. The debug version of the code includes the 11269debug output trace mechanism and has a much larger code and data size. 11270Note 11271that these values will vary depending on the efficiency of the compiler 11272and 11273the compiler options used during generation. 11274 11275 Previous Release: 11276 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 11277 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 11278 Current Release: 11279 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 11280 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 11281 11282 112832) iASL Compiler/Disassembler: 11284 11285iASL now fully disassembles SSDTs. However, External() statements are 11286not 11287generated automatically for unresolved symbols at this time. This is a 11288planned feature for future implementation. 11289 11290Fixed a scoping problem in the disassembler that occurs when the type of 11291the 11292target of a Scope() operator is overridden. This problem caused an 11293incorrectly nested internal namespace to be constructed. 11294 11295Any warnings or errors that are emitted during disassembly are now 11296commented 11297out automatically so that the resulting file can be recompiled without 11298any 11299hand editing. 11300 11301---------------------------------------- 1130226 March 2004. Summary of changes for version 20040326: 11303 113041) ACPI CA Core Subsystem: 11305 11306Implemented support for "wake" GPEs via interaction between GPEs and the 11307_PRW methods. Every GPE that is pointed to by one or more _PRWs is 11308identified as a WAKE GPE and by default will no longer be enabled at 11309runtime. Previously, we were blindly enabling all GPEs with a 11310corresponding 11311_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. 11312We 11313believe this has been the cause of thousands of "spurious" GPEs on some 11314systems. 11315 11316This new GPE behavior is can be reverted to the original behavior (enable 11317ALL GPEs at runtime) via a runtime flag. 11318 11319Fixed a problem where aliased control methods could not access objects 11320properly. The proper scope within the namespace was not initialized 11321(transferred to the target of the aliased method) before executing the 11322target method. 11323 11324Fixed a potential race condition on internal object deletion on the 11325return 11326object in AcpiEvaluateObject. 11327 11328Integrated a fix for resource descriptors where both _MEM and _MTP were 11329being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 11330wide, 0x0F instead of 0x03.) 11331 11332Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, 11333preventing 11334a 11335fault in some cases. 11336 11337Updated Notify() values for debug statements in evmisc.c 11338 11339Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 11340 11341Code and Data Size: Current and previous core subsystem library sizes are 11342shown below. These are the code and data sizes for the acpica.lib 11343produced 11344by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11345any ACPI driver or OSPM code. The debug version of the code includes the 11346debug output trace mechanism and has a much larger code and data size. 11347Note 11348that these values will vary depending on the efficiency of the compiler 11349and 11350the compiler options used during generation. 11351 11352 Previous Release: 11353 11354 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 11355 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 11356 Current Release: 11357 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 11358 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 11359 11360---------------------------------------- 1136111 March 2004. Summary of changes for version 20040311: 11362 113631) ACPI CA Core Subsystem: 11364 11365Fixed a problem where errors occurring during the parse phase of control 11366method execution did not abort cleanly. For example, objects created and 11367installed in the namespace were not deleted. This caused all subsequent 11368invocations of the method to return the AE_ALREADY_EXISTS exception. 11369 11370Implemented a mechanism to force a control method to "Serialized" 11371execution 11372if the method attempts to create namespace objects. (The root of the 11373AE_ALREADY_EXISTS problem.) 11374 11375Implemented support for the predefined _OSI "internal" control method. 11376Initial supported strings are "Linux", "Windows 2000", "Windows 2001", 11377and 11378"Windows 2001.1", and can be easily upgraded for new strings as 11379necessary. 11380This feature will allow "other" operating systems to execute the fully 11381tested, "Windows" code path through the ASL code 11382 11383Global Lock Support: Now allows multiple acquires and releases with any 11384internal thread. Removed concept of "owning thread" for this special 11385mutex. 11386 11387Fixed two functions that were inappropriately declaring large objects on 11388the 11389CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage 11390during 11391method execution considerably. 11392 11393Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 11394S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 11395 11396Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 11397defined on the machine. 11398 11399Implemented two runtime options: One to force all control method 11400execution 11401to "Serialized" to mimic Windows behavior, another to disable _OSI 11402support 11403if it causes problems on a given machine. 11404 11405Code and Data Size: Current and previous core subsystem library sizes are 11406shown below. These are the code and data sizes for the acpica.lib 11407produced 11408by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11409any ACPI driver or OSPM code. The debug version of the code includes the 11410debug output trace mechanism and has a much larger code and data size. 11411Note 11412that these values will vary depending on the efficiency of the compiler 11413and 11414the compiler options used during generation. 11415 11416 Previous Release: 11417 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 11418 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 11419 Current Release: 11420 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 11421 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 11422 114232) iASL Compiler/Disassembler: 11424 11425Fixed an array size problem for FreeBSD that would cause the compiler to 11426fault. 11427 11428---------------------------------------- 1142920 February 2004. Summary of changes for version 20040220: 11430 11431 114321) ACPI CA Core Subsystem: 11433 11434Implemented execution of _SxD methods for Device objects in the 11435GetObjectInfo interface. 11436 11437Fixed calls to _SST method to pass the correct arguments. 11438 11439Added a call to _SST on wake to restore to "working" state. 11440 11441Check for End-Of-Buffer failure case in the WalkResources interface. 11442 11443Integrated fix for 64-bit alignment issue in acglobal.h by moving two 11444structures to the beginning of the file. 11445 11446After wake, clear GPE status register(s) before enabling GPEs. 11447 11448After wake, clear/enable power button. (Perhaps we should clear/enable 11449all 11450fixed events upon wake.) 11451 11452Fixed a couple of possible memory leaks in the Namespace manager. 11453 11454Integrated latest acnetbsd.h file. 11455 11456---------------------------------------- 1145711 February 2004. Summary of changes for version 20040211: 11458 11459 114601) ACPI CA Core Subsystem: 11461 11462Completed investigation and implementation of the call-by-reference 11463mechanism for control method arguments. 11464 11465Fixed a problem where a store of an object into an indexed package could 11466fail if the store occurs within a different method than the method that 11467created the package. 11468 11469Fixed a problem where the ToDecimal operator could return incorrect 11470results. 11471 11472Fixed a problem where the CopyObject operator could fail on some of the 11473more 11474obscure objects (e.g., Reference objects.) 11475 11476Improved the output of the Debug object to display buffer, package, and 11477index objects. 11478 11479Fixed a problem where constructs of the form "RefOf (ArgX)" did not 11480return 11481the expected result. 11482 11483Added permanent ACPI_REPORT_ERROR macros for all instances of the 11484ACPI_AML_INTERNAL exception. 11485 11486Integrated latest version of acfreebsd.h 11487 11488---------------------------------------- 1148916 January 2004. Summary of changes for version 20040116: 11490 11491The purpose of this release is primarily to update the copyright years in 11492each module, thus causing a huge number of diffs. There are a few small 11493functional changes, however. 11494 114951) ACPI CA Core Subsystem: 11496 11497Improved error messages when there is a problem finding one or more of 11498the 11499required base ACPI tables 11500 11501Reintroduced the definition of APIC_HEADER in actbl.h 11502 11503Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 11504 11505Removed extraneous reference to NewObj in dsmthdat.c 11506 115072) iASL compiler 11508 11509Fixed a problem introduced in December that disabled the correct 11510disassembly 11511of Resource Templates 11512 11513 11514---------------------------------------- 1151503 December 2003. Summary of changes for version 20031203: 11516 115171) ACPI CA Core Subsystem: 11518 11519Changed the initialization of Operation Regions during subsystem 11520init to perform two entire walks of the ACPI namespace; The first 11521to initialize the regions themselves, the second to execute the 11522_REG methods. This fixed some interdependencies across _REG 11523methods found on some machines. 11524 11525Fixed a problem where a Store(Local0, Local1) could simply update 11526the object reference count, and not create a new copy of the 11527object if the Local1 is uninitialized. 11528 11529Implemented support for the _SST reserved method during sleep 11530transitions. 11531 11532Implemented support to clear the SLP_TYP and SLP_EN bits when 11533waking up, this is apparently required by some machines. 11534 11535When sleeping, clear the wake status only if SleepState is not S5. 11536 11537Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 11538pointer arithmetic advanced a string pointer too far. 11539 11540Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 11541could be returned if the requested table has not been loaded. 11542 11543Within the support for IRQ resources, restructured the handling of 11544the active and edge/level bits. 11545 11546Fixed a few problems in AcpiPsxExecute() where memory could be 11547leaked under certain error conditions. 11548 11549Improved error messages for the cases where the ACPI mode could 11550not be entered. 11551 11552Code and Data Size: Current and previous core subsystem library 11553sizes are shown below. These are the code and data sizes for the 11554acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11555these values do not include any ACPI driver or OSPM code. The 11556debug version of the code includes the debug output trace 11557mechanism and has a much larger code and data size. Note that 11558these values will vary depending on the efficiency of the compiler 11559and the compiler options used during generation. 11560 11561 Previous Release (20031029): 11562 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 11563 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 11564 Current Release: 11565 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 11566 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 11567 115682) iASL Compiler/Disassembler: 11569 11570Implemented a fix for the iASL disassembler where a bad index was 11571generated. This was most noticeable on 64-bit platforms 11572 11573 11574---------------------------------------- 1157529 October 2003. Summary of changes for version 20031029: 11576 115771) ACPI CA Core Subsystem: 11578 11579 11580Fixed a problem where a level-triggered GPE with an associated 11581_Lxx control method was incorrectly cleared twice. 11582 11583Fixed a problem with the Field support code where an access can 11584occur beyond the end-of-region if the field is non-aligned but 11585extends to the very end of the parent region (resulted in an 11586AE_AML_REGION_LIMIT exception.) 11587 11588Fixed a problem with ACPI Fixed Events where an RT Clock handler 11589would not get invoked on an RTC event. The RTC event bitmasks for 11590the PM1 registers were not being initialized properly. 11591 11592Implemented support for executing _STA and _INI methods for 11593Processor objects. Although this is currently not part of the 11594ACPI specification, there is existing ASL code that depends on the 11595init-time execution of these methods. 11596 11597Implemented and deployed a GetDescriptorName function to decode 11598the various types of internal descriptors. Guards against null 11599descriptors during debug output also. 11600 11601Implemented and deployed a GetNodeName function to extract the 4- 11602character namespace node name. This function simplifies the debug 11603and error output, as well as guarding against null pointers during 11604output. 11605 11606Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 11607simplify the debug and error output of 64-bit integers. This 11608macro replaces the HIDWORD and LODWORD macros for dumping these 11609integers. 11610 11611Updated the implementation of the Stall() operator to only call 11612AcpiOsStall(), and also return an error if the operand is larger 11613than 255. This preserves the required behavior of not 11614relinquishing the processor, as would happen if AcpiOsSleep() was 11615called for "long stalls". 11616 11617Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 11618initialized are now treated as NOOPs. 11619 11620Cleaned up a handful of warnings during 64-bit generation. 11621 11622Fixed a reported error where and incorrect GPE number was passed 11623to the GPE dispatch handler. This value is only used for error 11624output, however. Used this opportunity to clean up and streamline 11625the GPE dispatch code. 11626 11627Code and Data Size: Current and previous core subsystem library 11628sizes are shown below. These are the code and data sizes for the 11629acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11630these values do not include any ACPI driver or OSPM code. The 11631 11632debug version of the code includes the debug output trace 11633mechanism and has a much larger code and data size. Note that 11634these values will vary depending on the efficiency of the compiler 11635and the compiler options used during generation. 11636 11637 Previous Release (20031002): 11638 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 11639 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 11640 Current Release: 11641 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 11642 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 11643 11644 116452) iASL Compiler/Disassembler: 11646 11647Updated the iASL compiler to return an error if the operand to the 11648Stall() operator is larger than 255. 11649 11650 11651---------------------------------------- 1165202 October 2003. Summary of changes for version 20031002: 11653 11654 116551) ACPI CA Core Subsystem: 11656 11657Fixed a problem with Index Fields where the index was not 11658incremented for fields that require multiple writes to the 11659index/data registers (Fields that are wider than the data 11660register.) 11661 11662Fixed a problem with all Field objects where a write could go 11663beyond the end-of-field if the field was larger than the access 11664granularity and therefore required multiple writes to complete the 11665request. An extra write beyond the end of the field could happen 11666inadvertently. 11667 11668Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 11669would incorrectly be returned if the width of the Data Register 11670was larger than the specified field access width. 11671 11672Completed fixes for LoadTable() and Unload() and verified their 11673operation. Implemented full support for the "DdbHandle" object 11674throughout the ACPI CA subsystem. 11675 11676Implemented full support for the MADT and ECDT tables in the ACPI 11677CA header files. Even though these tables are not directly 11678consumed by ACPI CA, the header definitions are useful for ACPI 11679device drivers. 11680 11681Integrated resource descriptor fixes posted to the Linux ACPI 11682list. This included checks for minimum descriptor length, and 11683support for trailing NULL strings within descriptors that have 11684optional string elements. 11685 11686Code and Data Size: Current and previous core subsystem library 11687sizes are shown below. These are the code and data sizes for the 11688acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11689these values do not include any ACPI driver or OSPM code. The 11690debug version of the code includes the debug output trace 11691mechanism and has a much larger code and data size. Note that 11692these values will vary depending on the efficiency of the compiler 11693and the compiler options used during generation. 11694 11695 Previous Release (20030918): 11696 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 11697 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 11698 Current Release: 11699 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 11700 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 11701 11702 117032) iASL Compiler: 11704 11705Implemented detection of non-ASCII characters within the input 11706source ASL file. This catches attempts to compile binary (AML) 11707files early in the compile, with an informative error message. 11708 11709Fixed a problem where the disassembler would fault if the output 11710filename could not be generated or if the output file could not be 11711opened. 11712 11713---------------------------------------- 1171418 September 2003. Summary of changes for version 20030918: 11715 11716 117171) ACPI CA Core Subsystem: 11718 11719Found and fixed a longstanding problem with the late execution of 11720the various deferred AML opcodes (such as Operation Regions, 11721Buffer Fields, Buffers, and Packages). If the name string 11722specified for the name of the new object placed the object in a 11723scope other than the current scope, the initialization/execution 11724of the opcode failed. The solution to this problem was to 11725implement a mechanism where the late execution of such opcodes 11726does not attempt to lookup/create the name a second time in an 11727incorrect scope. This fixes the "region size computed 11728incorrectly" problem. 11729 11730Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 11731Global Lock AE_BAD_PARAMETER error. 11732 11733Fixed several 64-bit issues with prototypes, casting and data 11734types. 11735 11736Removed duplicate prototype from acdisasm.h 11737 11738Fixed an issue involving EC Operation Region Detach (Shaohua Li) 11739 11740Code and Data Size: Current and previous core subsystem library 11741sizes are shown below. These are the code and data sizes for the 11742acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11743these values do not include any ACPI driver or OSPM code. The 11744debug version of the code includes the debug output trace 11745mechanism and has a much larger code and data size. Note that 11746these values will vary depending on the efficiency of the compiler 11747and the compiler options used during generation. 11748 11749 Previous Release: 11750 11751 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 11752 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 11753 Current Release: 11754 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 11755 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 11756 11757 117582) Linux: 11759 11760Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 11761correct sleep time in seconds. 11762 11763---------------------------------------- 1176414 July 2003. Summary of changes for version 20030619: 11765 117661) ACPI CA Core Subsystem: 11767 11768Parse SSDTs in order discovered, as opposed to reverse order 11769(Hrvoje Habjanic) 11770 11771Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 11772Klausner, 11773 Nate Lawson) 11774 11775 117762) Linux: 11777 11778Dynamically allocate SDT list (suggested by Andi Kleen) 11779 11780proc function return value cleanups (Andi Kleen) 11781 11782Correctly handle NMI watchdog during long stalls (Andrew Morton) 11783 11784Make it so acpismp=force works (reported by Andrew Morton) 11785 11786 11787---------------------------------------- 1178819 June 2003. Summary of changes for version 20030619: 11789 117901) ACPI CA Core Subsystem: 11791 11792Fix To/FromBCD, eliminating the need for an arch-specific #define. 11793 11794Do not acquire a semaphore in the S5 shutdown path. 11795 11796Fix ex_digits_needed for 0. (Takayoshi Kochi) 11797 11798Fix sleep/stall code reversal. (Andi Kleen) 11799 11800Revert a change having to do with control method calling 11801semantics. 11802 118032) Linux: 11804 11805acpiphp update (Takayoshi Kochi) 11806 11807Export acpi_disabled for sonypi (Stelian Pop) 11808 11809Mention acpismp=force in config help 11810 11811Re-add acpitable.c and acpismp=force. This improves backwards 11812 11813compatibility and also cleans up the code to a significant degree. 11814 11815Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 11816 11817---------------------------------------- 1181822 May 2003. Summary of changes for version 20030522: 11819 118201) ACPI CA Core Subsystem: 11821 11822Found and fixed a reported problem where an AE_NOT_FOUND error 11823occurred occasionally during _BST evaluation. This turned out to 11824be an Owner ID allocation issue where a called method did not get 11825a new ID assigned to it. Eventually, (after 64k calls), the Owner 11826ID UINT16 would wraparound so that the ID would be the same as the 11827caller's and the called method would delete the caller's 11828namespace. 11829 11830Implemented extended error reporting for control methods that are 11831aborted due to a run-time exception. Output includes the exact 11832AML instruction that caused the method abort, a dump of the method 11833locals and arguments at the time of the abort, and a trace of all 11834nested control method calls. 11835 11836Modified the interpreter to allow the creation of buffers of zero 11837length from the AML code. Implemented new code to ensure that no 11838attempt is made to actually allocate a memory buffer (of length 11839zero) - instead, a simple buffer object with a NULL buffer pointer 11840and length zero is created. A warning is no longer issued when 11841the AML attempts to create a zero-length buffer. 11842 11843Implemented a workaround for the "leading asterisk issue" in 11844_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 11845asterisk is automatically removed if present in any HID, UID, or 11846CID strings. The iASL compiler will still flag this asterisk as 11847an error, however. 11848 11849Implemented full support for _CID methods that return a package of 11850multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 11851now additionally returns a device _CID list if present. This 11852required a change to the external interface in order to pass an 11853ACPI_BUFFER object as a parameter since the _CID list is of 11854variable length. 11855 11856Fixed a problem with the new AE_SAME_HANDLER exception where 11857handler initialization code did not know about this exception. 11858 11859Code and Data Size: Current and previous core subsystem library 11860sizes are shown below. These are the code and data sizes for the 11861acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11862these values do not include any ACPI driver or OSPM code. The 11863debug version of the code includes the debug output trace 11864mechanism and has a much larger code and data size. Note that 11865these values will vary depending on the efficiency of the compiler 11866and the compiler options used during generation. 11867 11868 Previous Release (20030509): 11869 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 11870 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 11871 Current Release: 11872 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 11873 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 11874 11875 118762) Linux: 11877 11878Fixed a bug in which we would reinitialize the ACPI interrupt 11879after it was already working, thus disabling all ACPI and the IRQs 11880for any other device sharing the interrupt. (Thanks to Stian 11881Jordet) 11882 11883Toshiba driver update (John Belmonte) 11884 11885Return only 0 or 1 for our interrupt handler status (Andrew 11886Morton) 11887 11888 118893) iASL Compiler: 11890 11891Fixed a reported problem where multiple (nested) ElseIf() 11892statements were not handled correctly by the compiler, resulting 11893in incorrect warnings and incorrect AML code. This was a problem 11894in both the ASL parser and the code generator. 11895 11896 118974) Documentation: 11898 11899Added changes to existing interfaces, new exception codes, and new 11900text concerning reference count object management versus garbage 11901collection. 11902 11903---------------------------------------- 1190409 May 2003. Summary of changes for version 20030509. 11905 11906 119071) ACPI CA Core Subsystem: 11908 11909Changed the subsystem initialization sequence to hold off 11910installation of address space handlers until the hardware has been 11911initialized and the system has entered ACPI mode. This is because 11912the installation of space handlers can cause _REG methods to be 11913run. Previously, the _REG methods could potentially be run before 11914ACPI mode was enabled. 11915 11916Fixed some memory leak issues related to address space handler and 11917notify handler installation. There were some problems with the 11918reference count mechanism caused by the fact that the handler 11919objects are shared across several namespace objects. 11920 11921Fixed a reported problem where reference counts within the 11922namespace were not properly updated when named objects created by 11923method execution were deleted. 11924 11925Fixed a reported problem where multiple SSDTs caused a deletion 11926issue during subsystem termination. Restructured the table data 11927structures to simplify the linked lists and the related code. 11928 11929Fixed a problem where the table ID associated with secondary 11930tables (SSDTs) was not being propagated into the namespace objects 11931created by those tables. This would only present a problem for 11932tables that are unloaded at run-time, however. 11933 11934Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 11935type as the length parameter (instead of UINT32). 11936 11937Solved a long-standing problem where an ALREADY_EXISTS error 11938appears on various systems. This problem could happen when there 11939are multiple PCI_Config operation regions under a single PCI root 11940bus. This doesn't happen very frequently, but there are some 11941systems that do this in the ASL. 11942 11943Fixed a reported problem where the internal DeleteNode function 11944was incorrectly handling the case where a namespace node was the 11945first in the parent's child list, and had additional peers (not 11946the only child, but first in the list of children.) 11947 11948Code and Data Size: Current core subsystem library sizes are shown 11949below. These are the code and data sizes for the acpica.lib 11950produced by the Microsoft Visual C++ 6.0 compiler, and these 11951values do not include any ACPI driver or OSPM code. The debug 11952version of the code includes the debug output trace mechanism and 11953has a much larger code and data size. Note that these values will 11954vary depending on the efficiency of the compiler and the compiler 11955options used during generation. 11956 11957 Previous Release 11958 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 11959 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 11960 Current Release: 11961 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 11962 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 11963 11964 119652) Linux: 11966 11967Allow ":" in OS override string (Ducrot Bruno) 11968 11969Kobject fix (Greg KH) 11970 11971 119723 iASL Compiler/Disassembler: 11973 11974Fixed a problem in the generation of the C source code files (AML 11975is emitted in C source statements for BIOS inclusion) where the 11976Ascii dump that appears within a C comment at the end of each line 11977could cause a compile time error if the AML sequence happens to 11978have an open comment or close comment sequence embedded. 11979 11980 11981---------------------------------------- 1198224 April 2003. Summary of changes for version 20030424. 11983 11984 119851) ACPI CA Core Subsystem: 11986 11987Support for big-endian systems has been implemented. Most of the 11988support has been invisibly added behind big-endian versions of the 11989ACPI_MOVE_* macros. 11990 11991Fixed a problem in AcpiHwDisableGpeBlock() and 11992AcpiHwClearGpeBlock() where an incorrect offset was passed to the 11993low level hardware write routine. The offset parameter was 11994actually eliminated from the low level read/write routines because 11995they had become obsolete. 11996 11997Fixed a problem where a handler object was deleted twice during 11998the removal of a fixed event handler. 11999 12000 120012) Linux: 12002 12003A fix for SMP systems with link devices was contributed by 12004 12005Compaq's Dan Zink. 12006 12007(2.5) Return whether we handled the interrupt in our IRQ handler. 12008(Linux ISRs no longer return void, so we can propagate the handler 12009return value from the ACPI CA core back to the OS.) 12010 12011 12012 120133) Documentation: 12014 12015The ACPI CA Programmer Reference has been updated to reflect new 12016interfaces and changes to existing interfaces. 12017 12018---------------------------------------- 1201928 March 2003. Summary of changes for version 20030328. 12020 120211) ACPI CA Core Subsystem: 12022 12023The GPE Block Device support has been completed. New interfaces 12024are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 12025interfaces (enable, disable, clear, getstatus) have been split 12026into separate interfaces for Fixed Events and General Purpose 12027Events (GPEs) in order to support GPE Block Devices properly. 12028 12029Fixed a problem where the error message "Failed to acquire 12030semaphore" would appear during operations on the embedded 12031controller (EC). 12032 12033Code and Data Size: Current core subsystem library sizes are shown 12034below. These are the code and data sizes for the acpica.lib 12035produced by the Microsoft Visual C++ 6.0 compiler, and these 12036values do not include any ACPI driver or OSPM code. The debug 12037version of the code includes the debug output trace mechanism and 12038has a much larger code and data size. Note that these values will 12039vary depending on the efficiency of the compiler and the compiler 12040options used during generation. 12041 12042 Previous Release 12043 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 12044 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 12045 Current Release: 12046 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 12047 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 12048 12049 12050---------------------------------------- 1205128 February 2003. Summary of changes for version 20030228. 12052 12053 120541) ACPI CA Core Subsystem: 12055 12056The GPE handling and dispatch code has been completely overhauled 12057in preparation for support of GPE Block Devices (ID ACPI0006). 12058This affects internal data structures and code only; there should 12059be no differences visible externally. One new file has been 12060added, evgpeblk.c 12061 12062The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 12063fields that are used to determine the GPE block lengths. The 12064REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 12065structures are ignored. This is per the ACPI specification but it 12066isn't very clear. The full 256 Block 0/1 GPEs are now supported 12067(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 12068 12069In the SCI interrupt handler, removed the read of the PM1_CONTROL 12070register to look at the SCI_EN bit. On some machines, this read 12071causes an SMI event and greatly slows down SCI events. (This may 12072in fact be the cause of slow battery status response on some 12073systems.) 12074 12075Fixed a problem where a store of a NULL string to a package object 12076could cause the premature deletion of the object. This was seen 12077during execution of the battery _BIF method on some systems, 12078resulting in no battery data being returned. 12079 12080Added AcpiWalkResources interface to simplify parsing of resource 12081lists. 12082 12083Code and Data Size: Current core subsystem library sizes are shown 12084below. These are the code and data sizes for the acpica.lib 12085produced by the Microsoft Visual C++ 6.0 compiler, and these 12086values do not include any ACPI driver or OSPM code. The debug 12087version of the code includes the debug output trace mechanism and 12088has a much larger code and data size. Note that these values will 12089vary depending on the efficiency of the compiler and the compiler 12090options used during generation. 12091 12092 Previous Release 12093 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12094 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12095 Current Release: 12096 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 12097 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 12098 12099 121002) Linux 12101 12102S3 fixes (Ole Rohne) 12103 12104Update ACPI PHP driver with to use new acpi_walk_resource API 12105(Bjorn Helgaas) 12106 12107Add S4BIOS support (Pavel Machek) 12108 12109Map in entire table before performing checksum (John Stultz) 12110 12111Expand the mem= cmdline to allow the specification of reserved and 12112ACPI DATA blocks (Pavel Machek) 12113 12114Never use ACPI on VISWS 12115 12116Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 12117 12118Revert a change that allowed P_BLK lengths to be 4 or 5. This is 12119causing us to think that some systems support C2 when they really 12120don't. 12121 12122Do not count processor objects for non-present CPUs (Thanks to 12123Dominik Brodowski) 12124 12125 121263) iASL Compiler: 12127 12128Fixed a problem where ASL include files could not be found and 12129opened. 12130 12131Added support for the _PDC reserved name. 12132 12133 12134---------------------------------------- 1213522 January 2003. Summary of changes for version 20030122. 12136 12137 121381) ACPI CA Core Subsystem: 12139 12140Added a check for constructs of the form: Store (Local0, Local0) 12141where Local0 is not initialized. Apparently, some BIOS 12142programmers believe that this is a NOOP. Since this store doesn't 12143do anything anyway, the new prototype behavior will ignore this 12144error. This is a case where we can relax the strict checking in 12145the interpreter in the name of compatibility. 12146 12147 121482) Linux 12149 12150The AcpiSrc Source Conversion Utility has been released with the 12151Linux package for the first time. This is the utility that is 12152used to convert the ACPI CA base source code to the Linux version. 12153 12154(Both) Handle P_BLK lengths shorter than 6 more gracefully 12155 12156(Both) Move more headers to include/acpi, and delete an unused 12157header. 12158 12159(Both) Move drivers/acpi/include directory to include/acpi 12160 12161(Both) Boot functions don't use cmdline, so don't pass it around 12162 12163(Both) Remove include of unused header (Adrian Bunk) 12164 12165(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 12166the 12167former now also includes the latter, acpiphp.h only needs the one, 12168now. 12169 12170(2.5) Make it possible to select method of bios restoring after S3 12171resume. [=> no more ugly ifdefs] (Pavel Machek) 12172 12173(2.5) Make proc write interfaces work (Pavel Machek) 12174 12175(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 12176 12177(2.5) Break out ACPI Perf code into its own module, under cpufreq 12178(Dominik Brodowski) 12179 12180(2.4) S4BIOS support (Ducrot Bruno) 12181 12182(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 12183Visinoni) 12184 12185 121863) iASL Compiler: 12187 12188Added support to disassemble SSDT and PSDTs. 12189 12190Implemented support to obtain SSDTs from the Windows registry if 12191available. 12192 12193 12194---------------------------------------- 1219509 January 2003. Summary of changes for version 20030109. 12196 121971) ACPI CA Core Subsystem: 12198 12199Changed the behavior of the internal Buffer-to-String conversion 12200function. The current ACPI specification states that the contents 12201of the buffer are "converted to a string of two-character 12202hexadecimal numbers, each separated by a space". Unfortunately, 12203this definition is not backwards compatible with existing ACPI 1.0 12204implementations (although the behavior was not defined in the ACPI 122051.0 specification). The new behavior simply copies data from the 12206buffer to the string until a null character is found or the end of 12207the buffer is reached. The new String object is always null 12208terminated. This problem was seen during the generation of _BIF 12209battery data where incorrect strings were returned for battery 12210type, etc. This will also require an errata to the ACPI 12211specification. 12212 12213Renamed all instances of NATIVE_UINT and NATIVE_INT to 12214ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 12215 12216Copyright in all module headers (both Linux and non-Linux) has be 12217updated to 2003. 12218 12219Code and Data Size: Current core subsystem library sizes are shown 12220below. These are the code and data sizes for the acpica.lib 12221produced by the Microsoft Visual C++ 6.0 compiler, and these 12222values do not include any ACPI driver or OSPM code. The debug 12223version of the code includes the debug output trace mechanism and 12224has a much larger code and data size. Note that these values will 12225vary depending on the efficiency of the compiler and the compiler 12226options used during generation. 12227 12228 Previous Release 12229 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12230 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12231 Current Release: 12232 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12233 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12234 12235 122362) Linux 12237 12238Fixed an oops on module insertion/removal (Matthew Tippett) 12239 12240(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 12241 12242(2.5) Replace pr_debug (Randy Dunlap) 12243 12244(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 12245 12246(Both) Eliminate spawning of thread from timer callback, in favor 12247of schedule_work() 12248 12249(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 12250 12251(Both) Added define for Fixed Function HW region (Matthew Wilcox) 12252 12253(Both) Add missing statics to button.c (Pavel Machek) 12254 12255Several changes have been made to the source code translation 12256utility that generates the Linux Code in order to make the code 12257more "Linux-like": 12258 12259All typedefs on structs and unions have been removed in keeping 12260with the Linux coding style. 12261 12262Removed the non-Linux SourceSafe module revision number from each 12263module header. 12264 12265Completed major overhaul of symbols to be lowercased for linux. 12266Doubled the number of symbols that are lowercased. 12267 12268Fixed a problem where identifiers within procedure headers and 12269within quotes were not fully lower cased (they were left with a 12270starting capital.) 12271 12272Some C macros whose only purpose is to allow the generation of 16- 12273bit code are now completely removed in the Linux code, increasing 12274readability and maintainability. 12275 12276---------------------------------------- 12277 1227812 December 2002. Summary of changes for version 20021212. 12279 12280 122811) ACPI CA Core Subsystem: 12282 12283Fixed a problem where the creation of a zero-length AML Buffer 12284would cause a fault. 12285 12286Fixed a problem where a Buffer object that pointed to a static AML 12287buffer (in an ACPI table) could inadvertently be deleted, causing 12288memory corruption. 12289 12290Fixed a problem where a user buffer (passed in to the external 12291ACPI CA interfaces) could be overwritten if the buffer was too 12292small to complete the operation, causing memory corruption. 12293 12294Fixed a problem in the Buffer-to-String conversion code where a 12295string of length one was always returned, regardless of the size 12296of the input Buffer object. 12297 12298Removed the NATIVE_CHAR data type across the entire source due to 12299lack of need and lack of consistent use. 12300 12301Code and Data Size: Current core subsystem library sizes are shown 12302below. These are the code and data sizes for the acpica.lib 12303produced by the Microsoft Visual C++ 6.0 compiler, and these 12304values do not include any ACPI driver or OSPM code. The debug 12305version of the code includes the debug output trace mechanism and 12306has a much larger code and data size. Note that these values will 12307vary depending on the efficiency of the compiler and the compiler 12308options used during generation. 12309 12310 Previous Release 12311 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 12312 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 12313 Current Release: 12314 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12315 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12316 12317 12318---------------------------------------- 1231905 December 2002. Summary of changes for version 20021205. 12320 123211) ACPI CA Core Subsystem: 12322 12323Fixed a problem where a store to a String or Buffer object could 12324cause corruption of the DSDT if the object type being stored was 12325the same as the target object type and the length of the object 12326being stored was equal to or smaller than the original (existing) 12327target object. This was seen to cause corruption of battery _BIF 12328buffers if the _BIF method modified the buffer on the fly. 12329 12330Fixed a problem where an internal error was generated if a control 12331method invocation was used in an OperationRegion, Buffer, or 12332Package declaration. This was caused by the deferred parsing of 12333the control method and thus the deferred creation of the internal 12334method object. The solution to this problem was to create the 12335internal method object at the moment the method is encountered in 12336the first pass - so that subsequent references to the method will 12337able to obtain the required parameter count and thus properly 12338parse the method invocation. This problem presented itself as an 12339AE_AML_INTERNAL during the pass 1 parse phase during table load. 12340 12341Fixed a problem where the internal String object copy routine did 12342not always allocate sufficient memory for the target String object 12343and caused memory corruption. This problem was seen to cause 12344"Allocation already present in list!" errors as memory allocation 12345became corrupted. 12346 12347Implemented a new function for the evaluation of namespace objects 12348that allows the specification of the allowable return object 12349types. This simplifies a lot of code that checks for a return 12350object of one or more specific objects returned from the 12351evaluation (such as _STA, etc.) This may become and external 12352function if it would be useful to ACPI-related drivers. 12353 12354Completed another round of prefixing #defines with "ACPI_" for 12355clarity. 12356 12357Completed additional code restructuring to allow more modular 12358linking for iASL compiler and AcpiExec. Several files were split 12359creating new files. New files: nsparse.c dsinit.c evgpe.c 12360 12361Implemented an abort mechanism to terminate an executing control 12362method via the AML debugger. This feature is useful for debugging 12363control methods that depend (wait) for specific hardware 12364responses. 12365 12366Code and Data Size: Current core subsystem library sizes are shown 12367below. These are the code and data sizes for the acpica.lib 12368produced by the Microsoft Visual C++ 6.0 compiler, and these 12369values do not include any ACPI driver or OSPM code. The debug 12370version of the code includes the debug output trace mechanism and 12371has a much larger code and data size. Note that these values will 12372vary depending on the efficiency of the compiler and the compiler 12373options used during generation. 12374 12375 Previous Release 12376 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12377 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 12378 Current Release: 12379 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 12380 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 12381 12382 123832) iASL Compiler/Disassembler 12384 12385Fixed a compiler code generation problem for "Interrupt" Resource 12386Descriptors. If specified in the ASL, the optional "Resource 12387Source Index" and "Resource Source" fields were not inserted into 12388the correct location within the AML resource descriptor, creating 12389an invalid descriptor. 12390 12391Fixed a disassembler problem for "Interrupt" resource descriptors. 12392The optional "Resource Source Index" and "Resource Source" fields 12393were ignored. 12394 12395 12396---------------------------------------- 1239722 November 2002. Summary of changes for version 20021122. 12398 12399 124001) ACPI CA Core Subsystem: 12401 12402Fixed a reported problem where an object stored to a Method Local 12403or Arg was not copied to a new object during the store - the 12404object pointer was simply copied to the Local/Arg. This caused 12405all subsequent operations on the Local/Arg to also affect the 12406original source of the store operation. 12407 12408Fixed a problem where a store operation to a Method Local or Arg 12409was not completed properly if the Local/Arg contained a reference 12410(from RefOf) to a named field. The general-purpose store-to- 12411namespace-node code is now used so that this case is handled 12412automatically. 12413 12414Fixed a problem where the internal object copy routine would cause 12415a protection fault if the object being copied was a Package and 12416contained either 1) a NULL package element or 2) a nested sub- 12417package. 12418 12419Fixed a problem with the GPE initialization that resulted from an 12420ambiguity in the ACPI specification. One section of the 12421specification states that both the address and length of the GPE 12422block must be zero if the block is not supported. Another section 12423implies that only the address need be zero if the block is not 12424supported. The code has been changed so that both the address and 12425the length must be non-zero to indicate a valid GPE block (i.e., 12426if either the address or the length is zero, the GPE block is 12427invalid.) 12428 12429Code and Data Size: Current core subsystem library sizes are shown 12430below. These are the code and data sizes for the acpica.lib 12431produced by the Microsoft Visual C++ 6.0 compiler, and these 12432values do not include any ACPI driver or OSPM code. The debug 12433version of the code includes the debug output trace mechanism and 12434has a much larger code and data size. Note that these values will 12435vary depending on the efficiency of the compiler and the compiler 12436options used during generation. 12437 12438 Previous Release 12439 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 12440 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 12441 Current Release: 12442 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12443 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 12444 12445 124462) Linux 12447 12448Cleaned up EC driver. Exported an external EC read/write 12449interface. By going through this, other drivers (most notably 12450sonypi) will be able to serialize access to the EC. 12451 12452 124533) iASL Compiler/Disassembler 12454 12455Implemented support to optionally generate include files for both 12456ASM and C (the -i switch). This simplifies BIOS development by 12457automatically creating include files that contain external 12458declarations for the symbols that are created within the 12459 12460(optionally generated) ASM and C AML source files. 12461 12462 12463---------------------------------------- 1246415 November 2002. Summary of changes for version 20021115. 12465 124661) ACPI CA Core Subsystem: 12467 12468Fixed a memory leak problem where an error during resolution of 12469 12470method arguments during a method invocation from another method 12471failed to cleanup properly by deleting all successfully resolved 12472argument objects. 12473 12474Fixed a problem where the target of the Index() operator was not 12475correctly constructed if the source object was a package. This 12476problem has not been detected because the use of a target operand 12477with Index() is very rare. 12478 12479Fixed a problem with the Index() operator where an attempt was 12480made to delete the operand objects twice. 12481 12482Fixed a problem where an attempt was made to delete an operand 12483twice during execution of the CondRefOf() operator if the target 12484did not exist. 12485 12486Implemented the first of perhaps several internal create object 12487functions that create and initialize a specific object type. This 12488consolidates duplicated code wherever the object is created, thus 12489shrinking the size of the subsystem. 12490 12491Implemented improved debug/error messages for errors that occur 12492during nested method invocations. All executing method pathnames 12493are displayed (with the error) as the call stack is unwound - thus 12494simplifying debug. 12495 12496Fixed a problem introduced in the 10/02 release that caused 12497premature deletion of a buffer object if a buffer was used as an 12498ASL operand where an integer operand is required (Thus causing an 12499implicit object conversion from Buffer to Integer.) The change in 12500the 10/02 release was attempting to fix a memory leak (albeit 12501incorrectly.) 12502 12503Code and Data Size: Current core subsystem library sizes are shown 12504below. These are the code and data sizes for the acpica.lib 12505produced by the Microsoft Visual C++ 6.0 compiler, and these 12506values do not include any ACPI driver or OSPM code. The debug 12507version of the code includes the debug output trace mechanism and 12508has a much larger code and data size. Note that these values will 12509vary depending on the efficiency of the compiler and the compiler 12510options used during generation. 12511 12512 Previous Release 12513 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 12514 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 12515 Current Release: 12516 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 12517 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 12518 12519 125202) Linux 12521 12522Changed the implementation of the ACPI semaphores to use down() 12523instead of down_interruptable(). It is important that the 12524execution of ACPI control methods not be interrupted by signals. 12525Methods must run to completion, or the system may be left in an 12526unknown/unstable state. 12527 12528Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 12529(Shawn Starr) 12530 12531 125323) iASL Compiler/Disassembler 12533 12534 12535Changed the default location of output files. All output files 12536are now placed in the current directory by default instead of in 12537the directory of the source file. This change may affect some 12538existing makefiles, but it brings the behavior of the compiler in 12539line with other similar tools. The location of the output files 12540can be overridden with the -p command line switch. 12541 12542 12543---------------------------------------- 1254411 November 2002. Summary of changes for version 20021111. 12545 12546 125470) ACPI Specification 2.0B is released and is now available at: 12548http://www.acpi.info/index.html 12549 12550 125511) ACPI CA Core Subsystem: 12552 12553Implemented support for the ACPI 2.0 SMBus Operation Regions. 12554This includes the early detection and handoff of the request to 12555the SMBus region handler (avoiding all of the complex field 12556support code), and support for the bidirectional return packet 12557from an SMBus write operation. This paves the way for the 12558development of SMBus drivers in each host operating system. 12559 12560Fixed a problem where the semaphore WAIT_FOREVER constant was 12561defined as 32 bits, but must be 16 bits according to the ACPI 12562specification. This had the side effect of causing ASL 12563Mutex/Event timeouts even though the ASL code requested a wait 12564forever. Changed all internal references to the ACPI timeout 12565parameter to 16 bits to prevent future problems. Changed the name 12566of WAIT_FOREVER to ACPI_WAIT_FOREVER. 12567 12568Code and Data Size: Current core subsystem library sizes are shown 12569below. These are the code and data sizes for the acpica.lib 12570produced by the Microsoft Visual C++ 6.0 compiler, and these 12571values do not include any ACPI driver or OSPM code. The debug 12572version of the code includes the debug output trace mechanism and 12573has a much larger code and data size. Note that these values will 12574vary depending on the efficiency of the compiler and the compiler 12575options used during generation. 12576 12577 Previous Release 12578 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12579 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 12580 Current Release: 12581 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 12582 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 12583 12584 125852) Linux 12586 12587Module loading/unloading fixes (John Cagle) 12588 12589 125903) iASL Compiler/Disassembler 12591 12592Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 12593 12594Implemented support for the disassembly of all SMBus protocol 12595keywords (SMBQuick, SMBWord, etc.) 12596 12597---------------------------------------- 1259801 November 2002. Summary of changes for version 20021101. 12599 12600 126011) ACPI CA Core Subsystem: 12602 12603Fixed a problem where platforms that have a GPE1 block but no GPE0 12604block were not handled correctly. This resulted in a "GPE 12605overlap" error message. GPE0 is no longer required. 12606 12607Removed code added in the previous release that inserted nodes 12608into the namespace in alphabetical order. This caused some side- 12609effects on various machines. The root cause of the problem is 12610still under investigation since in theory, the internal ordering 12611of the namespace nodes should not matter. 12612 12613 12614Enhanced error reporting for the case where a named object is not 12615found during control method execution. The full ACPI namepath 12616(name reference) of the object that was not found is displayed in 12617this case. 12618 12619Note: as a result of the overhaul of the namespace object types in 12620the previous release, the namespace nodes for the predefined 12621scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 12622instead of ACPI_TYPE_ANY. This simplifies the namespace 12623management code but may affect code that walks the namespace tree 12624looking for specific object types. 12625 12626Code and Data Size: Current core subsystem library sizes are shown 12627below. These are the code and data sizes for the acpica.lib 12628produced by the Microsoft Visual C++ 6.0 compiler, and these 12629values do not include any ACPI driver or OSPM code. The debug 12630version of the code includes the debug output trace mechanism and 12631has a much larger code and data size. Note that these values will 12632vary depending on the efficiency of the compiler and the compiler 12633options used during generation. 12634 12635 Previous Release 12636 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 12637 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 12638 Current Release: 12639 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12640 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 12641 12642 126432) Linux 12644 12645Fixed a problem introduced in the previous release where the 12646Processor and Thermal objects were not recognized and installed in 12647/proc. This was related to the scope type change described above. 12648 12649 126503) iASL Compiler/Disassembler 12651 12652Implemented the -g option to get all of the required ACPI tables 12653from the registry and save them to files (Windows version of the 12654compiler only.) The required tables are the FADT, FACS, and DSDT. 12655 12656Added ACPI table checksum validation during table disassembly in 12657order to catch corrupted tables. 12658 12659 12660---------------------------------------- 1266122 October 2002. Summary of changes for version 20021022. 12662 126631) ACPI CA Core Subsystem: 12664 12665Implemented a restriction on the Scope operator that the target 12666must already exist in the namespace at the time the operator is 12667encountered (during table load or method execution). In other 12668words, forward references are not allowed and Scope() cannot 12669create a new object. This changes the previous behavior where the 12670interpreter would create the name if not found. This new behavior 12671correctly enables the search-to-root algorithm during namespace 12672lookup of the target name. Because of this upsearch, this fixes 12673the known Compaq _SB_.OKEC problem and makes both the AML 12674interpreter and iASL compiler compatible with other ACPI 12675implementations. 12676 12677Completed a major overhaul of the internal ACPI object types for 12678the ACPI Namespace and the associated operand objects. Many of 12679these types had become obsolete with the introduction of the two- 12680pass namespace load. This cleanup simplifies the code and makes 12681the entire namespace load mechanism much clearer and easier to 12682understand. 12683 12684Improved debug output for tracking scope opening/closing to help 12685diagnose scoping issues. The old scope name as well as the new 12686scope name are displayed. Also improved error messages for 12687problems with ASL Mutex objects and error messages for GPE 12688problems. 12689 12690Cleaned up the namespace dump code, removed obsolete code. 12691 12692All string output (for all namespace/object dumps) now uses the 12693common ACPI string output procedure which handles escapes properly 12694and does not emit non-printable characters. 12695 12696Fixed some issues with constants in the 64-bit version of the 12697local C library (utclib.c) 12698 12699 127002) Linux 12701 12702EC Driver: No longer attempts to acquire the Global Lock at 12703interrupt level. 12704 12705 127063) iASL Compiler/Disassembler 12707 12708Implemented ACPI 2.0B grammar change that disallows all Type 1 and 127092 opcodes outside of a control method. This means that the 12710"executable" operators (versus the "namespace" operators) cannot 12711be used at the table level; they can only be used within a control 12712method. 12713 12714Implemented the restriction on the Scope() operator where the 12715target must already exist in the namespace at the time the 12716operator is encountered (during ASL compilation). In other words, 12717forward references are not allowed and Scope() cannot create a new 12718object. This makes the iASL compiler compatible with other ACPI 12719implementations and makes the Scope() implementation adhere to the 12720ACPI specification. 12721 12722Fixed a problem where namepath optimization for the Alias operator 12723was optimizing the wrong path (of the two namepaths.) This caused 12724a "Missing alias link" error message. 12725 12726Fixed a problem where an "unknown reserved name" warning could be 12727incorrectly generated for names like "_SB" when the trailing 12728underscore is not used in the original ASL. 12729 12730Fixed a problem where the reserved name check did not handle 12731NamePaths with multiple NameSegs correctly. The first nameseg of 12732the NamePath was examined instead of the last NameSeg. 12733 12734 12735---------------------------------------- 12736 1273702 October 2002. Summary of changes for this release. 12738 12739 127401) ACPI CA Core Subsystem version 20021002: 12741 12742Fixed a problem where a store/copy of a string to an existing 12743string did not always set the string length properly in the String 12744object. 12745 12746Fixed a reported problem with the ToString operator where the 12747behavior was identical to the ToHexString operator instead of just 12748simply converting a raw buffer to a string data type. 12749 12750Fixed a problem where CopyObject and the other "explicit" 12751conversion operators were not updating the internal namespace node 12752type as part of the store operation. 12753 12754Fixed a memory leak during implicit source operand conversion 12755where the original object was not deleted if it was converted to a 12756new object of a different type. 12757 12758Enhanced error messages for all problems associated with namespace 12759lookups. Common procedure generates and prints the lookup name as 12760well as the formatted status. 12761 12762Completed implementation of a new design for the Alias support 12763within the namespace. The existing design did not handle the case 12764where a new object was assigned to one of the two names due to the 12765use of an explicit conversion operator, resulting in the two names 12766pointing to two different objects. The new design simply points 12767the Alias name to the original name node - not to the object. 12768This results in a level of indirection that must be handled in the 12769name resolution mechanism. 12770 12771Code and Data Size: Current core subsystem library sizes are shown 12772below. These are the code and data sizes for the acpica.lib 12773produced by the Microsoft Visual C++ 6.0 compiler, and these 12774values do not include any ACPI driver or OSPM code. The debug 12775version of the code includes the debug output trace mechanism and 12776has a larger code and data size. Note that these values will vary 12777depending on the efficiency of the compiler and the compiler 12778options used during generation. 12779 12780 Previous Release 12781 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 12782 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 12783 Current Release: 12784 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 12785 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 12786 12787 127882) Linux 12789 12790Initialize thermal driver's timer before it is used. (Knut 12791Neumann) 12792 12793Allow handling negative celsius values. (Kochi Takayoshi) 12794 12795Fix thermal management and make trip points. R/W (Pavel Machek) 12796 12797Fix /proc/acpi/sleep. (P. Christeas) 12798 12799IA64 fixes. (David Mosberger) 12800 12801Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 12802 12803Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 12804Brodowski) 12805 12806 128073) iASL Compiler/Disassembler 12808 12809Clarified some warning/error messages. 12810 12811 12812---------------------------------------- 1281318 September 2002. Summary of changes for this release. 12814 12815 128161) ACPI CA Core Subsystem version 20020918: 12817 12818Fixed a reported problem with reference chaining (via the Index() 12819and RefOf() operators) in the ObjectType() and SizeOf() operators. 12820The definition of these operators includes the dereferencing of 12821all chained references to return information on the base object. 12822 12823Fixed a problem with stores to indexed package elements - the 12824existing code would not complete the store if an "implicit 12825conversion" was not performed. In other words, if the existing 12826object (package element) was to be replaced completely, the code 12827didn't handle this case. 12828 12829Relaxed typechecking on the ASL "Scope" operator to allow the 12830target name to refer to an object of type Integer, String, or 12831Buffer, in addition to the scoping object types (Device, 12832predefined Scopes, Processor, PowerResource, and ThermalZone.) 12833This allows existing AML code that has workarounds for a bug in 12834Windows to function properly. A warning is issued, however. This 12835affects both the AML interpreter and the iASL compiler. Below is 12836an example of this type of ASL code: 12837 12838 Name(DEB,0x00) 12839 Scope(DEB) 12840 { 12841 12842Fixed some reported problems with 64-bit integer support in the 12843local implementation of C library functions (clib.c) 12844 12845 128462) Linux 12847 12848Use ACPI fix map region instead of IOAPIC region, since it is 12849undefined in non-SMP. 12850 12851Ensure that the SCI has the proper polarity and trigger, even on 12852systems that do not have an interrupt override entry in the MADT. 12853 128542.5 big driver reorganization (Pat Mochel) 12855 12856Use early table mapping code from acpitable.c (Andi Kleen) 12857 12858New blacklist entries (Andi Kleen) 12859 12860Blacklist improvements. Split blacklist code out into a separate 12861file. Move checking the blacklist to very early. Previously, we 12862would use ACPI tables, and then halfway through init, check the 12863blacklist -- too late. Now, it's early enough to completely fall- 12864back to non-ACPI. 12865 12866 128673) iASL Compiler/Disassembler version 20020918: 12868 12869Fixed a problem where the typechecking code didn't know that an 12870alias could point to a method. In other words, aliases were not 12871being dereferenced during typechecking. 12872 12873 12874---------------------------------------- 1287529 August 2002. Summary of changes for this release. 12876 128771) ACPI CA Core Subsystem Version 20020829: 12878 12879If the target of a Scope() operator already exists, it must be an 12880object type that actually opens a scope -- such as a Device, 12881Method, Scope, etc. This is a fatal runtime error. Similar error 12882check has been added to the iASL compiler also. 12883 12884Tightened up the namespace load to disallow multiple names in the 12885same scope. This previously was allowed if both objects were of 12886the same type. (i.e., a lookup was the same as entering a new 12887name). 12888 12889 128902) Linux 12891 12892Ensure that the ACPI interrupt has the proper trigger and 12893polarity. 12894 12895local_irq_disable is extraneous. (Matthew Wilcox) 12896 12897Make "acpi=off" actually do what it says, and not use the ACPI 12898interpreter *or* the tables. 12899 12900Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 12901Takayoshi) 12902 12903 129043) iASL Compiler/Disassembler Version 20020829: 12905 12906Implemented namepath optimization for name declarations. For 12907example, a declaration like "Method (\_SB_.ABCD)" would get 12908optimized to "Method (ABCD)" if the declaration is within the 12909\_SB_ scope. This optimization is in addition to the named 12910reference path optimization first released in the previous 12911version. This would seem to complete all possible optimizations 12912for namepaths within the ASL/AML. 12913 12914If the target of a Scope() operator already exists, it must be an 12915object type that actually opens a scope -- such as a Device, 12916Method, Scope, etc. 12917 12918Implemented a check and warning for unreachable code in the same 12919block below a Return() statement. 12920 12921Fixed a problem where the listing file was not generated if the 12922compiler aborted if the maximum error count was exceeded (200). 12923 12924Fixed a problem where the typechecking of method return values was 12925broken. This includes the check for a return value when the 12926method is invoked as a TermArg (a return value is expected.) 12927 12928Fixed a reported problem where EOF conditions during a quoted 12929string or comment caused a fault. 12930 12931 12932---------------------------------------- 1293315 August 2002. Summary of changes for this release. 12934 129351) ACPI CA Core Subsystem Version 20020815: 12936 12937Fixed a reported problem where a Store to a method argument that 12938contains a reference did not perform the indirect store correctly. 12939This problem was created during the conversion to the new 12940reference object model - the indirect store to a method argument 12941code was not updated to reflect the new model. 12942 12943Reworked the ACPI mode change code to better conform to ACPI 2.0, 12944handle corner cases, and improve code legibility (Kochi Takayoshi) 12945 12946Fixed a problem with the pathname parsing for the carat (^) 12947prefix. The heavy use of the carat operator by the new namepath 12948optimization in the iASL compiler uncovered a problem with the AML 12949interpreter handling of this prefix. In the case where one or 12950more carats precede a single nameseg, the nameseg was treated as 12951standalone and the search rule (to root) was inadvertently 12952applied. This could cause both the iASL compiler and the 12953interpreter to find the wrong object or to miss the error that 12954should occur if the object does not exist at that exact pathname. 12955 12956Found and fixed the problem where the HP Pavilion DSDT would not 12957load. This was a relatively minor tweak to the table loading code 12958(a problem caused by the unexpected encounter with a method 12959invocation not within a control method), but it does not solve the 12960overall issue of the execution of AML code at the table level. 12961This investigation is still ongoing. 12962 12963Code and Data Size: Current core subsystem library sizes are shown 12964below. These are the code and data sizes for the acpica.lib 12965produced by the Microsoft Visual C++ 6.0 compiler, and these 12966values do not include any ACPI driver or OSPM code. The debug 12967version of the code includes the debug output trace mechanism and 12968has a larger code and data size. Note that these values will vary 12969depending on the efficiency of the compiler and the compiler 12970options used during generation. 12971 12972 Previous Release 12973 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 12974 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 12975 Current Release: 12976 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 12977 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 12978 12979 129802) Linux 12981 12982Remove redundant slab.h include (Brad Hards) 12983 12984Fix several bugs in thermal.c (Herbert Nachtnebel) 12985 12986Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 12987 12988Change acpi_system_suspend to use updated irq functions (Pavel 12989Machek) 12990 12991Export acpi_get_firmware_table (Matthew Wilcox) 12992 12993Use proper root proc entry for ACPI (Kochi Takayoshi) 12994 12995Fix early-boot table parsing (Bjorn Helgaas) 12996 12997 129983) iASL Compiler/Disassembler 12999 13000Reworked the compiler options to make them more consistent and to 13001use two-letter options where appropriate. We were running out of 13002sensible letters. This may break some makefiles, so check the 13003current options list by invoking the compiler with no parameters. 13004 13005Completed the design and implementation of the ASL namepath 13006optimization option for the compiler. This option optimizes all 13007references to named objects to the shortest possible path. The 13008first attempt tries to utilize a single nameseg (4 characters) and 13009the "search-to-root" algorithm used by the interpreter. If that 13010cannot be used (because either the name is not in the search path 13011or there is a conflict with another object with the same name), 13012the pathname is optimized using the carat prefix (usually a 13013shorter string than specifying the entire path from the root.) 13014 13015Implemented support to obtain the DSDT from the Windows registry 13016(when the disassembly option is specified with no input file). 13017Added this code as the implementation for AcpiOsTableOverride in 13018the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 13019utility) to scan memory for the DSDT to the AcpiOsTableOverride 13020function in the DOS OSL to make the disassembler truly OS 13021independent. 13022 13023Implemented a new option to disassemble and compile in one step. 13024When used without an input filename, this option will grab the 13025DSDT from the local machine, disassemble it, and compile it in one 13026step. 13027 13028Added a warning message for invalid escapes (a backslash followed 13029by any character other than the allowable escapes). This catches 13030the quoted string error "\_SB_" (which should be "\\_SB_" ). 13031 13032Also, there are numerous instances in the ACPI specification where 13033this error occurs. 13034 13035Added a compiler option to disable all optimizations. This is 13036basically the "compatibility mode" because by using this option, 13037the AML code will come out exactly the same as other ASL 13038compilers. 13039 13040Added error messages for incorrectly ordered dependent resource 13041functions. This includes: missing EndDependentFn macro at end of 13042dependent resource list, nested dependent function macros (both 13043start and end), and missing StartDependentFn macro. These are 13044common errors that should be caught at compile time. 13045 13046Implemented _OSI support for the disassembler and compiler. _OSI 13047must be included in the namespace for proper disassembly (because 13048the disassembler must know the number of arguments.) 13049 13050Added an "optimization" message type that is optional (off by 13051default). This message is used for all optimizations - including 13052constant folding, integer optimization, and namepath optimization. 13053 13054---------------------------------------- 1305525 July 2002. Summary of changes for this release. 13056 13057 130581) ACPI CA Core Subsystem Version 20020725: 13059 13060The AML Disassembler has been enhanced to produce compilable ASL 13061code and has been integrated into the iASL compiler (see below) as 13062well as the single-step disassembly for the AML debugger and the 13063disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 13064resource templates and macros are fully supported. The 13065disassembler has been tested on over 30 different AML files, 13066producing identical AML when the resulting disassembled ASL file 13067is recompiled with the same ASL compiler. 13068 13069Modified the Resource Manager to allow zero interrupts and zero 13070dma channels during the GetCurrentResources call. This was 13071causing problems on some platforms. 13072 13073Added the AcpiOsRedirectOutput interface to the OSL to simplify 13074output redirection for the AcpiOsPrintf and AcpiOsVprintf 13075interfaces. 13076 13077Code and Data Size: Current core subsystem library sizes are shown 13078below. These are the code and data sizes for the acpica.lib 13079produced by the Microsoft Visual C++ 6.0 compiler, and these 13080values do not include any ACPI driver or OSPM code. The debug 13081version of the code includes the debug output trace mechanism and 13082has a larger code and data size. Note that these values will vary 13083depending on the efficiency of the compiler and the compiler 13084options used during generation. 13085 13086 Previous Release 13087 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 13088 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 13089 Current Release: 13090 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 13091 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 13092 13093 130942) Linux 13095 13096Fixed a panic in the EC driver (Dominik Brodowski) 13097 13098Implemented checksum of the R/XSDT itself during Linux table scan 13099(Richard Schaal) 13100 13101 131023) iASL compiler 13103 13104The AML disassembler is integrated into the compiler. The "-d" 13105option invokes the disassembler to completely disassemble an 13106input AML file, producing as output a text ASL file with the 13107extension ".dsl" (to avoid name collisions with existing .asl 13108source files.) A future enhancement will allow the disassembler 13109to obtain the BIOS DSDT from the registry under Windows. 13110 13111Fixed a problem with the VendorShort and VendorLong resource 13112descriptors where an invalid AML sequence was created. 13113 13114Implemented a fix for BufferData term in the ASL parser. It was 13115inadvertently defined twice, allowing invalid syntax to pass and 13116causing reduction conflicts. 13117 13118Fixed a problem where the Ones opcode could get converted to a 13119value of zero if "Ones" was used where a byte, word or dword value 13120was expected. The 64-bit value is now truncated to the correct 13121size with the correct value. 13122 13123 13124 13125---------------------------------------- 1312602 July 2002. Summary of changes for this release. 13127 13128 131291) ACPI CA Core Subsystem Version 20020702: 13130 13131The Table Manager code has been restructured to add several new 13132features. Tables that are not required by the core subsystem 13133(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 13134validated in any way and are returned from AcpiGetFirmwareTable if 13135requested. The AcpiOsTableOverride interface is now called for 13136each table that is loaded by the subsystem in order to allow the 13137host to override any table it chooses. Previously, only the DSDT 13138could be overridden. Added one new files, tbrsdt.c and 13139tbgetall.c. 13140 13141Fixed a problem with the conversion of internal package objects to 13142external objects (when a package is returned from a control 13143method.) The return buffer length was set to zero instead of the 13144proper length of the package object. 13145 13146Fixed a reported problem with the use of the RefOf and DeRefOf 13147operators when passing reference arguments to control methods. A 13148new type of Reference object is used internally for references 13149produced by the RefOf operator. 13150 13151Added additional error messages in the Resource Manager to explain 13152AE_BAD_DATA errors when they occur during resource parsing. 13153 13154Split the AcpiEnableSubsystem into two primitives to enable a 13155finer granularity initialization sequence. These two calls should 13156be called in this order: AcpiEnableSubsystem (flags), 13157AcpiInitializeObjects (flags). The flags parameter remains the 13158same. 13159 13160 131612) Linux 13162 13163Updated the ACPI utilities module to understand the new style of 13164fully resolved package objects that are now returned from the core 13165subsystem. This eliminates errors of the form: 13166 13167 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 13168 acpi_utils-0430 [145] acpi_evaluate_reference: 13169 Invalid element in package (not a device reference) 13170 13171The method evaluation utility uses the new buffer allocation 13172scheme instead of calling AcpiEvaluate Object twice. 13173 13174Added support for ECDT. This allows the use of the Embedded 13175 13176Controller before the namespace has been fully initialized, which 13177is necessary for ACPI 2.0 support, and for some laptops to 13178initialize properly. (Laptops using ECDT are still rare, so only 13179limited testing was performed of the added functionality.) 13180 13181Fixed memory leaks in the EC driver. 13182 13183Eliminated a brittle code structure in acpi_bus_init(). 13184 13185Eliminated the acpi_evaluate() helper function in utils.c. It is 13186no longer needed since acpi_evaluate_object can optionally 13187allocate memory for the return object. 13188 13189Implemented fix for keyboard hang when getting battery readings on 13190some systems (Stephen White) 13191 13192PCI IRQ routing update (Dominik Brodowski) 13193 13194Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 13195support 13196 13197---------------------------------------- 1319811 June 2002. Summary of changes for this release. 13199 13200 132011) ACPI CA Core Subsystem Version 20020611: 13202 13203Fixed a reported problem where constants such as Zero and One 13204appearing within _PRT packages were not handled correctly within 13205the resource manager code. Originally reported against the ASL 13206compiler because the code generator now optimizes integers to 13207their minimal AML representation (i.e. AML constants if possible.) 13208The _PRT code now handles all AML constant opcodes correctly 13209(Zero, One, Ones, Revision). 13210 13211Fixed a problem with the Concatenate operator in the AML 13212interpreter where a buffer result object was incorrectly marked as 13213not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 13214 13215All package sub-objects are now fully resolved before they are 13216returned from the external ACPI interfaces. This means that name 13217strings are resolved to object handles, and constant operators 13218(Zero, One, Ones, Revision) are resolved to Integers. 13219 13220Implemented immediate resolution of the AML Constant opcodes 13221(Zero, One, Ones, Revision) to Integer objects upon detection 13222within the AML stream. This has simplified and reduced the 13223generated code size of the subsystem by eliminating about 10 13224switch statements for these constants (which previously were 13225contained in Reference objects.) The complicating issues are that 13226the Zero opcode is used as a "placeholder" for unspecified 13227optional target operands and stores to constants are defined to be 13228no-ops. 13229 13230Code and Data Size: Current core subsystem library sizes are shown 13231below. These are the code and data sizes for the acpica.lib 13232produced by the Microsoft Visual C++ 6.0 compiler, and these 13233values do not include any ACPI driver or OSPM code. The debug 13234version of the code includes the debug output trace mechanism and 13235has a larger code and data size. Note that these values will vary 13236depending on the efficiency of the compiler and the compiler 13237options used during generation. 13238 13239 Previous Release 13240 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 13241 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 13242 Current Release: 13243 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 13244 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 13245 13246 132472) Linux 13248 13249 13250Added preliminary support for obtaining _TRA data for PCI root 13251bridges (Bjorn Helgaas). 13252 13253 132543) iASL Compiler Version X2046: 13255 13256Fixed a problem where the "_DDN" reserved name was defined to be a 13257control method with one argument. There are no arguments, and 13258_DDN does not have to be a control method. 13259 13260Fixed a problem with the Linux version of the compiler where the 13261source lines printed with error messages were the wrong lines. 13262This turned out to be the "LF versus CR/LF" difference between 13263Windows and Unix. This appears to be the longstanding issue 13264concerning listing output and error messages. 13265 13266Fixed a problem with the Linux version of compiler where opcode 13267names within error messages were wrong. This was caused by a 13268slight difference in the output of the Flex tool on Linux versus 13269Windows. 13270 13271Fixed a problem with the Linux compiler where the hex output files 13272contained some garbage data caused by an internal buffer overrun. 13273 13274 13275---------------------------------------- 1327617 May 2002. Summary of changes for this release. 13277 13278 132791) ACPI CA Core Subsystem Version 20020517: 13280 13281Implemented a workaround to an BIOS bug discovered on the HP 13282OmniBook where the FADT revision number and the table size are 13283inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 13284behavior is to fallback to using only the ACPI 1.0 fields of the 13285FADT if the table is too small to be a ACPI 2.0 table as claimed 13286by the revision number. Although this is a BIOS bug, this is a 13287case where the workaround is simple enough and with no side 13288effects, so it seemed prudent to add it. A warning message is 13289issued, however. 13290 13291Implemented minimum size checks for the fixed-length ACPI tables - 13292- the FADT and FACS, as well as consistency checks between the 13293revision number and the table size. 13294 13295Fixed a reported problem in the table override support where the 13296new table pointer was incorrectly treated as a physical address 13297instead of a logical address. 13298 13299Eliminated the use of the AE_AML_ERROR exception and replaced it 13300with more descriptive codes. 13301 13302Fixed a problem where an exception would occur if an ASL Field was 13303defined with no named Field Units underneath it (used by some 13304index fields). 13305 13306Code and Data Size: Current core subsystem library sizes are shown 13307below. These are the code and data sizes for the acpica.lib 13308produced by the Microsoft Visual C++ 6.0 compiler, and these 13309values do not include any ACPI driver or OSPM code. The debug 13310version of the code includes the debug output trace mechanism and 13311has a larger code and data size. Note that these values will vary 13312depending on the efficiency of the compiler and the compiler 13313options used during generation. 13314 13315 Previous Release 13316 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 13317 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 13318 Current Release: 13319 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 13320 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 13321 13322 13323 133242) Linux 13325 13326Much work done on ACPI init (MADT and PCI IRQ routing support). 13327(Paul D. and Dominik Brodowski) 13328 13329Fix PCI IRQ-related panic on boot (Sam Revitch) 13330 13331Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 13332 13333Fix "MHz" typo (Dominik Brodowski) 13334 13335Fix RTC year 2000 issue (Dominik Brodowski) 13336 13337Preclude multiple button proc entries (Eric Brunet) 13338 13339Moved arch-specific code out of include/platform/aclinux.h 13340 133413) iASL Compiler Version X2044: 13342 13343Implemented error checking for the string used in the EISAID macro 13344(Usually used in the definition of the _HID object.) The code now 13345strictly enforces the PnP format - exactly 7 characters, 3 13346uppercase letters and 4 hex digits. 13347 13348If a raw string is used in the definition of the _HID object 13349(instead of the EISAID macro), the string must contain all 13350alphanumeric characters (e.g., "*PNP0011" is not allowed because 13351of the asterisk.) 13352 13353Implemented checking for invalid use of ACPI reserved names for 13354most of the name creation operators (Name, Device, Event, Mutex, 13355OperationRegion, PowerResource, Processor, and ThermalZone.) 13356Previously, this check was only performed for control methods. 13357 13358Implemented an additional check on the Name operator to emit an 13359error if a reserved name that must be implemented in ASL as a 13360control method is used. We know that a reserved name must be a 13361method if it is defined with input arguments. 13362 13363The warning emitted when a namespace object reference is not found 13364during the cross reference phase has been changed into an error. 13365The "External" directive should be used for names defined in other 13366modules. 13367 13368 133694) Tools and Utilities 13370 13371The 16-bit tools (adump16 and aexec16) have been regenerated and 13372tested. 13373 13374Fixed a problem with the output of both acpidump and adump16 where 13375the indentation of closing parentheses and brackets was not 13376 13377aligned properly with the parent block. 13378 13379 13380---------------------------------------- 1338103 May 2002. Summary of changes for this release. 13382 13383 133841) ACPI CA Core Subsystem Version 20020503: 13385 13386Added support a new OSL interface that allows the host operating 13387 13388system software to override the DSDT found in the firmware - 13389AcpiOsTableOverride. With this interface, the OSL can examine the 13390version of the firmware DSDT and replace it with a different one 13391if desired. 13392 13393Added new external interfaces for accessing ACPI registers from 13394device drivers and other system software - AcpiGetRegister and 13395AcpiSetRegister. This was simply an externalization of the 13396existing AcpiHwBitRegister interfaces. 13397 13398Fixed a regression introduced in the previous build where the 13399ASL/AML CreateField operator always returned an error, 13400"destination must be a NS Node". 13401 13402Extended the maximum time (before failure) to successfully enable 13403ACPI mode to 3 seconds. 13404 13405Code and Data Size: Current core subsystem library sizes are shown 13406below. These are the code and data sizes for the acpica.lib 13407produced by the Microsoft Visual C++ 6.0 compiler, and these 13408values do not include any ACPI driver or OSPM code. The debug 13409version of the code includes the debug output trace mechanism and 13410has a larger code and data size. Note that these values will vary 13411depending on the efficiency of the compiler and the compiler 13412options used during generation. 13413 13414 Previous Release 13415 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 13416 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 13417 Current Release: 13418 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 13419 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 13420 13421 134222) Linux 13423 13424Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 13425free. While 3 out of 4 of our in-house systems work fine, the last 13426one still hangs when testing the LAPIC timer. 13427 13428Renamed many files in 2.5 kernel release to omit "acpi_" from the 13429name. 13430 13431Added warning on boot for Presario 711FR. 13432 13433Sleep improvements (Pavel Machek) 13434 13435ACPI can now be built without CONFIG_PCI enabled. 13436 13437IA64: Fixed memory map functions (JI Lee) 13438 13439 134403) iASL Compiler Version X2043: 13441 13442Added support to allow the compiler to be integrated into the MS 13443VC++ development environment for one-button compilation of single 13444files or entire projects -- with error-to-source-line mapping. 13445 13446Implemented support for compile-time constant folding for the 13447Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 13448specification. This allows the ASL writer to use expressions 13449instead of Integer/Buffer/String constants in terms that must 13450evaluate to constants at compile time and will also simplify the 13451emitted AML in any such sub-expressions that can be folded 13452(evaluated at compile-time.) This increases the size of the 13453compiler significantly because a portion of the ACPI CA AML 13454interpreter is included within the compiler in order to pre- 13455evaluate constant expressions. 13456 13457 13458Fixed a problem with the "Unicode" ASL macro that caused the 13459compiler to fault. (This macro is used in conjunction with the 13460_STR reserved name.) 13461 13462Implemented an AML opcode optimization to use the Zero, One, and 13463Ones opcodes where possible to further reduce the size of integer 13464constants and thus reduce the overall size of the generated AML 13465code. 13466 13467Implemented error checking for new reserved terms for ACPI version 134682.0A. 13469 13470Implemented the -qr option to display the current list of ACPI 13471reserved names known to the compiler. 13472 13473Implemented the -qc option to display the current list of ASL 13474operators that are allowed within constant expressions and can 13475therefore be folded at compile time if the operands are constants. 13476 13477 134784) Documentation 13479 13480Updated the Programmer's Reference for new interfaces, data types, 13481and memory allocation model options. 13482 13483Updated the iASL Compiler User Reference to apply new format and 13484add information about new features and options. 13485 13486---------------------------------------- 1348719 April 2002. Summary of changes for this release. 13488 134891) ACPI CA Core Subsystem Version 20020419: 13490 13491The source code base for the Core Subsystem has been completely 13492cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 13493versions. The Lint option files used are included in the 13494/acpi/generate/lint directory. 13495 13496Implemented enhanced status/error checking across the entire 13497Hardware manager subsystem. Any hardware errors (reported from 13498the OSL) are now bubbled up and will abort a running control 13499method. 13500 13501 13502Fixed a problem where the per-ACPI-table integer width (32 or 64) 13503was stored only with control method nodes, causing a fault when 13504non-control method code was executed during table loading. The 13505solution implemented uses a global variable to indicate table 13506width across the entire ACPI subsystem. Therefore, ACPI CA does 13507not support mixed integer widths across different ACPI tables 13508(DSDT, SSDT). 13509 13510Fixed a problem where NULL extended fields (X fields) in an ACPI 135112.0 ACPI FADT caused the table load to fail. Although the 13512existing ACPI specification is a bit fuzzy on this topic, the new 13513behavior is to fall back on a ACPI 1.0 field if the corresponding 13514ACPI 2.0 X field is zero (even though the table revision indicates 13515a full ACPI 2.0 table.) The ACPI specification will be updated to 13516clarify this issue. 13517 13518Fixed a problem with the SystemMemory operation region handler 13519where memory was always accessed byte-wise even if the AML- 13520specified access width was larger than a byte. This caused 13521problems on systems with memory-mapped I/O. Memory is now 13522accessed with the width specified. On systems that do not support 13523non-aligned transfers, a check is made to guarantee proper address 13524alignment before proceeding in order to avoid an AML-caused 13525alignment fault within the kernel. 13526 13527 13528Fixed a problem with the ExtendedIrq resource where only one byte 13529of the 4-byte Irq field was extracted. 13530 13531Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 13532function was out of date and required a rewrite. 13533 13534Code and Data Size: Current core subsystem library sizes are shown 13535below. These are the code and data sizes for the acpica.lib 13536produced by the Microsoft Visual C++ 6.0 compiler, and these 13537values do not include any ACPI driver or OSPM code. The debug 13538version of the code includes the debug output trace mechanism and 13539has a larger code and data size. Note that these values will vary 13540depending on the efficiency of the compiler and the compiler 13541options used during generation. 13542 13543 Previous Release 13544 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 13545 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 13546 Current Release: 13547 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 13548 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 13549 13550 135512) Linux 13552 13553PCI IRQ routing fixes (Dominik Brodowski) 13554 13555 135563) iASL Compiler Version X2042: 13557 13558Implemented an additional compile-time error check for a field 13559unit whose size + minimum access width would cause a run-time 13560access beyond the end-of-region. Previously, only the field size 13561itself was checked. 13562 13563The Core subsystem and iASL compiler now share a common parse 13564object in preparation for compile-time evaluation of the type 135653/4/5 ASL operators. 13566 13567 13568---------------------------------------- 13569Summary of changes for this release: 03_29_02 13570 135711) ACPI CA Core Subsystem Version 20020329: 13572 13573Implemented support for late evaluation of TermArg operands to 13574Buffer and Package objects. This allows complex expressions to be 13575used in the declarations of these object types. 13576 13577Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 135781.0, if the field was larger than 32 bits, it was returned as a 13579buffer - otherwise it was returned as an integer. In ACPI 2.0, 13580the field is returned as a buffer only if the field is larger than 1358164 bits. The TableRevision is now considered when making this 13582conversion to avoid incompatibility with existing ASL code. 13583 13584Implemented logical addressing for AcpiOsGetRootPointer. This 13585allows an RSDP with either a logical or physical address. With 13586this support, the host OS can now override all ACPI tables with 13587one logical RSDP. Includes implementation of "typed" pointer 13588support to allow a common data type for both physical and logical 13589pointers internally. This required a change to the 13590AcpiOsGetRootPointer interface. 13591 13592Implemented the use of ACPI 2.0 Generic Address Structures for all 13593GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 13594mapped I/O for these ACPI features. 13595 13596Initialization now ignores not only non-required tables (All 13597tables other than the FADT, FACS, DSDT, and SSDTs), but also does 13598not validate the table headers of unrecognized tables. 13599 13600Fixed a problem where a notify handler could only be 13601installed/removed on an object of type Device. All "notify" 13602 13603objects are now supported -- Devices, Processor, Power, and 13604Thermal. 13605 13606Removed most verbosity from the ACPI_DB_INFO debug level. Only 13607critical information is returned when this debug level is enabled. 13608 13609Code and Data Size: Current core subsystem library sizes are shown 13610below. These are the code and data sizes for the acpica.lib 13611produced by the Microsoft Visual C++ 6.0 compiler, and these 13612values do not include any ACPI driver or OSPM code. The debug 13613version of the code includes the debug output trace mechanism and 13614has a larger code and data size. Note that these values will vary 13615depending on the efficiency of the compiler and the compiler 13616options used during generation. 13617 13618 Previous Release 13619 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 13620 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 13621 Current Release: 13622 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 13623 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 13624 13625 136262) Linux: 13627 13628The processor driver (acpi_processor.c) now fully supports ACPI 136292.0-based processor performance control (e.g. Intel(R) 13630SpeedStep(TM) technology) Note that older laptops that only have 13631the Intel "applet" interface are not supported through this. The 13632'limit' and 'performance' interface (/proc) are fully functional. 13633[Note that basic policy for controlling performance state 13634transitions will be included in the next version of ospmd.] The 13635idle handler was modified to more aggressively use C2, and PIIX4 13636errata handling underwent a complete overhaul (big thanks to 13637Dominik Brodowski). 13638 13639Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 13640based devices in the ACPI namespace are now dynamically bound 13641(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 13642This allows, among other things, ACPI to resolve bus numbers for 13643subordinate PCI bridges. 13644 13645Enhanced PCI IRQ routing to get the proper bus number for _PRT 13646entries defined underneath PCI bridges. 13647 13648Added IBM 600E to bad bios list due to invalid _ADR value for 13649PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 13650 13651In the process of adding full MADT support (e.g. IOAPIC) for IA32 13652(acpi.c, mpparse.c) -- stay tuned. 13653 13654Added back visual differentiation between fixed-feature and 13655control-method buttons in dmesg. Buttons are also subtyped (e.g. 13656button/power/PWRF) to simplify button identification. 13657 13658We no longer use -Wno-unused when compiling debug. Please ignore 13659any "_THIS_MODULE defined but not used" messages. 13660 13661Can now shut down the system using "magic sysrq" key. 13662 13663 136643) iASL Compiler version 2041: 13665 13666Fixed a problem where conversion errors for hex/octal/decimal 13667constants were not reported. 13668 13669Implemented a fix for the General Register template Address field. 13670This field was 8 bits when it should be 64. 13671 13672Fixed a problem where errors/warnings were no longer being emitted 13673within the listing output file. 13674 13675Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 13676exactly 4 characters, alphanumeric only. 13677 13678 13679 13680 13681---------------------------------------- 13682Summary of changes for this release: 03_08_02 13683 13684 136851) ACPI CA Core Subsystem Version 20020308: 13686 13687Fixed a problem with AML Fields where the use of the "AccessAny" 13688keyword could cause an interpreter error due to attempting to read 13689or write beyond the end of the parent Operation Region. 13690 13691Fixed a problem in the SystemMemory Operation Region handler where 13692an attempt was made to map memory beyond the end of the region. 13693This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 13694errors on some Linux systems. 13695 13696Fixed a problem where the interpreter/namespace "search to root" 13697algorithm was not functioning for some object types. Relaxed the 13698internal restriction on the search to allow upsearches for all 13699external object types as well as most internal types. 13700 13701 137022) Linux: 13703 13704We now use safe_halt() macro versus individual calls to sti | hlt. 13705 13706Writing to the processor limit interface should now work. "echo 1" 13707will increase the limit, 2 will decrease, and 0 will reset to the 13708 13709default. 13710 13711 137123) ASL compiler: 13713 13714Fixed segfault on Linux version. 13715 13716 13717---------------------------------------- 13718Summary of changes for this release: 02_25_02 13719 137201) ACPI CA Core Subsystem: 13721 13722 13723Fixed a problem where the GPE bit masks were not initialized 13724properly, causing erratic GPE behavior. 13725 13726Implemented limited support for multiple calling conventions. The 13727code can be generated with either the VPL (variable parameter 13728list, or "C") convention, or the FPL (fixed parameter list, or 13729"Pascal") convention. The core subsystem is about 3.4% smaller 13730when generated with FPL. 13731 13732 137332) Linux 13734 13735Re-add some /proc/acpi/event functionality that was lost during 13736the rewrite 13737 13738Resolved issue with /proc events for fixed-feature buttons showing 13739up as the system device. 13740 13741Fixed checks on C2/C3 latencies to be inclusive of maximum values. 13742 13743Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 13744 13745Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 13746 13747Fixed limit interface & usage to fix bugs with passive cooling 13748hysterisis. 13749 13750Restructured PRT support. 13751 13752 13753---------------------------------------- 13754Summary of changes for this label: 02_14_02 13755 13756 137571) ACPI CA Core Subsystem: 13758 13759Implemented support in AcpiLoadTable to allow loading of FACS and 13760FADT tables. 13761 13762Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 13763been removed. All 64-bit platforms should be migrated to the ACPI 137642.0 tables. The actbl71.h header has been removed from the source 13765tree. 13766 13767All C macros defined within the subsystem have been prefixed with 13768"ACPI_" to avoid collision with other system include files. 13769 13770Removed the return value for the two AcpiOsPrint interfaces, since 13771it is never used and causes lint warnings for ignoring the return 13772value. 13773 13774Added error checking to all internal mutex acquire and release 13775calls. Although a failure from one of these interfaces is 13776probably a fatal system error, these checks will cause the 13777immediate abort of the currently executing method or interface. 13778 13779Fixed a problem where the AcpiSetCurrentResources interface could 13780fault. This was a side effect of the deployment of the new memory 13781allocation model. 13782 13783Fixed a couple of problems with the Global Lock support introduced 13784in the last major build. The "common" (1.0/2.0) internal FACS was 13785being overwritten with the FACS signature and clobbering the 13786Global Lock pointer. Also, the actual firmware FACS was being 13787unmapped after construction of the "common" FACS, preventing 13788access to the actual Global Lock field within it. The "common" 13789internal FACS is no longer installed as an actual ACPI table; it 13790is used simply as a global. 13791 13792Code and Data Size: Current core subsystem library sizes are shown 13793below. These are the code and data sizes for the acpica.lib 13794produced by the Microsoft Visual C++ 6.0 compiler, and these 13795values do not include any ACPI driver or OSPM code. The debug 13796version of the code includes the debug output trace mechanism and 13797has a larger code and data size. Note that these values will vary 13798depending on the efficiency of the compiler and the compiler 13799options used during generation. 13800 13801 Previous Release (02_07_01) 13802 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 13803 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 13804 Current Release: 13805 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 13806 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 13807 13808 138092) Linux 13810 13811Updated Linux-specific code for core macro and OSL interface 13812changes described above. 13813 13814Improved /proc/acpi/event. It now can be opened only once and has 13815proper poll functionality. 13816 13817Fixed and restructured power management (acpi_bus). 13818 13819Only create /proc "view by type" when devices of that class exist. 13820 13821Fixed "charging/discharging" bug (and others) in acpi_battery. 13822 13823Improved thermal zone code. 13824 13825 138263) ASL Compiler, version X2039: 13827 13828 13829Implemented the new compiler restriction on ASL String hex/octal 13830escapes to non-null, ASCII values. An error results if an invalid 13831value is used. (This will require an ACPI 2.0 specification 13832change.) 13833 13834AML object labels that are output to the optional C and ASM source 13835are now prefixed with both the ACPI table signature and table ID 13836to help guarantee uniqueness within a large BIOS project. 13837 13838 13839---------------------------------------- 13840Summary of changes for this label: 02_01_02 13841 138421) ACPI CA Core Subsystem: 13843 13844ACPI 2.0 support is complete in the entire Core Subsystem and the 13845ASL compiler. All new ACPI 2.0 operators are implemented and all 13846other changes for ACPI 2.0 support are complete. With 13847simultaneous code and data optimizations throughout the subsystem, 13848ACPI 2.0 support has been implemented with almost no additional 13849cost in terms of code and data size. 13850 13851Implemented a new mechanism for allocation of return buffers. If 13852the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 13853be allocated on behalf of the caller. Consolidated all return 13854buffer validation and allocation to a common procedure. Return 13855buffers will be allocated via the primary OSL allocation interface 13856since it appears that a separate pool is not needed by most users. 13857If a separate pool is required for these buffers, the caller can 13858still use the original mechanism and pre-allocate the buffer(s). 13859 13860Implemented support for string operands within the DerefOf 13861operator. 13862 13863Restructured the Hardware and Event managers to be table driven, 13864simplifying the source code and reducing the amount of generated 13865code. 13866 13867Split the common read/write low-level ACPI register bitfield 13868procedure into a separate read and write, simplifying the code 13869considerably. 13870 13871Obsoleted the AcpiOsCallocate OSL interface. This interface was 13872used only a handful of times and didn't have enough critical mass 13873for a separate interface. Replaced with a common calloc procedure 13874in the core. 13875 13876Fixed a reported problem with the GPE number mapping mechanism 13877that allows GPE1 numbers to be non-contiguous with GPE0. 13878Reorganized the GPE information and shrunk a large array that was 13879originally large enough to hold info for all possible GPEs (256) 13880to simply large enough to hold all GPEs up to the largest GPE 13881number on the machine. 13882 13883Fixed a reported problem with resource structure alignment on 64- 13884bit platforms. 13885 13886Changed the AcpiEnableEvent and AcpiDisableEvent external 13887interfaces to not require any flags for the common case of 13888enabling/disabling a GPE. 13889 13890Implemented support to allow a "Notify" on a Processor object. 13891 13892Most TBDs in comments within the source code have been resolved 13893and eliminated. 13894 13895 13896Fixed a problem in the interpreter where a standalone parent 13897prefix (^) was not handled correctly in the interpreter and 13898debugger. 13899 13900Removed obsolete and unnecessary GPE save/restore code. 13901 13902Implemented Field support in the ASL Load operator. This allows a 13903table to be loaded from a named field, in addition to loading a 13904table directly from an Operation Region. 13905 13906Implemented timeout and handle support in the external Global Lock 13907interfaces. 13908 13909Fixed a problem in the AcpiDump utility where pathnames were no 13910longer being generated correctly during the dump of named objects. 13911 13912Modified the AML debugger to give a full display of if/while 13913predicates instead of just one AML opcode at a time. (The 13914predicate can have several nested ASL statements.) The old method 13915was confusing during single stepping. 13916 13917Code and Data Size: Current core subsystem library sizes are shown 13918below. These are the code and data sizes for the acpica.lib 13919produced by the Microsoft Visual C++ 6.0 compiler, and these 13920values do not include any ACPI driver or OSPM code. The debug 13921version of the code includes the debug output trace mechanism and 13922has a larger code and data size. Note that these values will vary 13923depending on the efficiency of the compiler and the compiler 13924options used during generation. 13925 13926 Previous Release (12_18_01) 13927 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 13928 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 13929 Current Release: 13930 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 13931 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 13932 139332) Linux 13934 13935 Implemented fix for PIIX reverse throttling errata (Processor 13936driver) 13937 13938Added new Limit interface (Processor and Thermal drivers) 13939 13940New thermal policy (Thermal driver) 13941 13942Many updates to /proc 13943 13944Battery "low" event support (Battery driver) 13945 13946Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 13947 13948IA32 - IA64 initialization unification, no longer experimental 13949 13950Menuconfig options redesigned 13951 139523) ASL Compiler, version X2037: 13953 13954Implemented several new output features to simplify integration of 13955AML code into firmware: 1) Output the AML in C source code with 13956labels for each named ASL object. The original ASL source code 13957is interleaved as C comments. 2) Output the AML in ASM source code 13958with labels and interleaved ASL source. 3) Output the AML in 13959raw hex table form, in either C or ASM. 13960 13961Implemented support for optional string parameters to the 13962LoadTable operator. 13963 13964Completed support for embedded escape sequences within string 13965literals. The compiler now supports all single character escapes 13966as well as the Octal and Hex escapes. Note: the insertion of a 13967null byte into a string literal (via the hex/octal escape) causes 13968the string to be immediately terminated. A warning is issued. 13969 13970Fixed a problem where incorrect AML was generated for the case 13971where an ASL namepath consists of a single parent prefix ( 13972 13973) with no trailing name segments. 13974 13975The compiler has been successfully generated with a 64-bit C 13976compiler. 13977 13978 13979 13980 13981---------------------------------------- 13982Summary of changes for this label: 12_18_01 13983 139841) Linux 13985 13986Enhanced blacklist with reason and severity fields. Any table's 13987signature may now be used to identify a blacklisted system. 13988 13989Call _PIC control method to inform the firmware which interrupt 13990model the OS is using. Turn on any disabled link devices. 13991 13992Cleaned up busmgr /proc error handling (Andreas Dilger) 13993 13994 2) ACPI CA Core Subsystem: 13995 13996Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 13997while loop) 13998 13999Completed implementation of the ACPI 2.0 "Continue", 14000"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 14001operators. All new ACPI 2.0 operators are now implemented in both 14002the ASL compiler and the AML interpreter. The only remaining ACPI 140032.0 task is support for the String data type in the DerefOf 14004operator. Fixed a problem with AcquireMutex where the status code 14005was lost if the caller had to actually wait for the mutex. 14006 14007Increased the maximum ASL Field size from 64K bits to 4G bits. 14008 14009Completed implementation of the external Global Lock interfaces -- 14010AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 14011Handler parameters were added. 14012 14013Completed another pass at removing warnings and issues when 14014compiling with 64-bit compilers. The code now compiles cleanly 14015with the Intel 64-bit C/C++ compiler. Most notably, the pointer 14016add and subtract (diff) macros have changed considerably. 14017 14018 14019Created and deployed a new ACPI_SIZE type that is 64-bits wide on 1402064-bit platforms, 32-bits on all others. This type is used 14021wherever memory allocation and/or the C sizeof() operator is used, 14022and affects the OSL memory allocation interfaces AcpiOsAllocate 14023and AcpiOsCallocate. 14024 14025Implemented sticky user breakpoints in the AML debugger. 14026 14027Code and Data Size: Current core subsystem library sizes are shown 14028below. These are the code and data sizes for the acpica.lib 14029produced by the Microsoft Visual C++ 6.0 compiler, and these 14030values do not include any ACPI driver or OSPM code. The debug 14031version of the code includes the debug output trace mechanism and 14032has a larger code and data size. Note that these values will vary 14033depending on the efficiency of the compiler and the compiler 14034options used during generation. 14035 14036 Previous Release (12_05_01) 14037 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 14038 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 14039 Current Release: 14040 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 14041 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 14042 14043 3) ASL Compiler, version X2034: 14044 14045Now checks for (and generates an error if detected) the use of a 14046Break or Continue statement without an enclosing While statement. 14047 14048 14049Successfully generated the compiler with the Intel 64-bit C 14050compiler. 14051 14052 ---------------------------------------- 14053Summary of changes for this label: 12_05_01 14054 14055 1) ACPI CA Core Subsystem: 14056 14057The ACPI 2.0 CopyObject operator is fully implemented. This 14058operator creates a new copy of an object (and is also used to 14059bypass the "implicit conversion" mechanism of the Store operator.) 14060 14061The ACPI 2.0 semantics for the SizeOf operator are fully 14062implemented. The change is that performing a SizeOf on a 14063reference object causes an automatic dereference of the object to 14064tha actual value before the size is evaluated. This behavior was 14065undefined in ACPI 1.0. 14066 14067The ACPI 2.0 semantics for the Extended IRQ resource descriptor 14068have been implemented. The interrupt polarity and mode are now 14069independently set. 14070 14071Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 14072appearing in Package objects were not properly converted to 14073integers when the internal Package was converted to an external 14074object (via the AcpiEvaluateObject interface.) 14075 14076Fixed a problem with the namespace object deletion mechanism for 14077objects created by control methods. There were two parts to this 14078problem: 1) Objects created during the initialization phase method 14079parse were not being deleted, and 2) The object owner ID mechanism 14080to track objects was broken. 14081 14082Fixed a problem where the use of the ASL Scope operator within a 14083control method would result in an invalid opcode exception. 14084 14085Fixed a problem introduced in the previous label where the buffer 14086length required for the _PRT structure was not being returned 14087correctly. 14088 14089Code and Data Size: Current core subsystem library sizes are shown 14090below. These are the code and data sizes for the acpica.lib 14091produced by the Microsoft Visual C++ 6.0 compiler, and these 14092values do not include any ACPI driver or OSPM code. The debug 14093version of the code includes the debug output trace mechanism and 14094has a larger code and data size. Note that these values will vary 14095depending on the efficiency of the compiler and the compiler 14096options used during generation. 14097 14098 Previous Release (11_20_01) 14099 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 14100 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 14101 14102 Current Release: 14103 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 14104 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 14105 14106 2) Linux: 14107 14108Updated all files to apply cleanly against 2.4.16. 14109 14110Added basic PCI Interrupt Routing Table (PRT) support for IA32 14111(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 14112version supports both static and dyanmic PRT entries, but dynamic 14113entries are treated as if they were static (not yet 14114reconfigurable). Architecture- specific code to use this data is 14115absent on IA32 but should be available shortly. 14116 14117Changed the initialization sequence to start the ACPI interpreter 14118(acpi_init) prior to initialization of the PCI driver (pci_init) 14119in init/main.c. This ordering is required to support PRT and 14120facilitate other (future) enhancement. A side effect is that the 14121ACPI bus driver and certain device drivers can no longer be loaded 14122as modules. 14123 14124Modified the 'make menuconfig' options to allow PCI Interrupt 14125Routing support to be included without the ACPI Bus and other 14126device drivers. 14127 14128 3) ASL Compiler, version X2033: 14129 14130Fixed some issues with the use of the new CopyObject and 14131DataTableRegion operators. Both are fully functional. 14132 14133 ---------------------------------------- 14134Summary of changes for this label: 11_20_01 14135 14136 20 November 2001. Summary of changes for this release. 14137 14138 1) ACPI CA Core Subsystem: 14139 14140Updated Index support to match ACPI 2.0 semantics. Storing a 14141Integer, String, or Buffer to an Index of a Buffer will store only 14142the least-significant byte of the source to the Indexed buffer 14143byte. Multiple writes are not performed. 14144 14145Fixed a problem where the access type used in an AccessAs ASL 14146operator was not recorded correctly into the field object. 14147 14148Fixed a problem where ASL Event objects were created in a 14149signalled state. Events are now created in an unsignalled state. 14150 14151The internal object cache is now purged after table loading and 14152initialization to reduce the use of dynamic kernel memory -- on 14153the assumption that object use is greatest during the parse phase 14154of the entire table (versus the run-time use of individual control 14155methods.) 14156 14157ACPI 2.0 variable-length packages are now fully operational. 14158 14159Code and Data Size: Code and Data optimizations have permitted new 14160feature development with an actual reduction in the library size. 14161Current core subsystem library sizes are shown below. These are 14162the code and data sizes for the acpica.lib produced by the 14163Microsoft Visual C++ 6.0 compiler, and these values do not include 14164any ACPI driver or OSPM code. The debug version of the code 14165includes the debug output trace mechanism and has a larger code 14166and data size. Note that these values will vary depending on the 14167efficiency of the compiler and the compiler options used during 14168generation. 14169 14170 Previous Release (11_09_01): 14171 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 14172 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 14173 14174 Current Release: 14175 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 14176 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 14177 14178 2) Linux: 14179 14180Enhanced the ACPI boot-time initialization code to allow the use 14181of Local APIC tables for processor enumeration on IA-32, and to 14182pave the way for a fully MPS-free boot (on SMP systems) in the 14183near future. This functionality replaces 14184arch/i386/kernel/acpitables.c, which was introduced in an earlier 141852.4.15-preX release. To enable this feature you must add 14186"acpi_boot=on" to the kernel command line -- see the help entry 14187for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 14188the works... 14189 14190Restructured the configuration options to allow boot-time table 14191parsing support without inclusion of the ACPI Interpreter (and 14192other) code. 14193 14194NOTE: This release does not include fixes for the reported events, 14195power-down, and thermal passive cooling issues (coming soon). 14196 14197 3) ASL Compiler: 14198 14199Added additional typechecking for Fields within restricted access 14200Operation Regions. All fields within EC and CMOS regions must be 14201declared with ByteAcc. All fields withing SMBus regions must be 14202declared with the BufferAcc access type. 14203 14204Fixed a problem where the listing file output of control methods 14205no longer interleaved the actual AML code with the ASL source 14206code. 14207 14208 14209 14210 14211---------------------------------------- 14212Summary of changes for this label: 11_09_01 14213 142141) ACPI CA Core Subsystem: 14215 14216Implemented ACPI 2.0-defined support for writes to fields with a 14217Buffer, String, or Integer source operand that is smaller than the 14218target field. In these cases, the source operand is zero-extended 14219to fill the target field. 14220 14221Fixed a problem where a Field starting bit offset (within the 14222parent operation region) was calculated incorrectly if the 14223 14224alignment of the field differed from the access width. This 14225affected CreateWordField, CreateDwordField, CreateQwordField, and 14226possibly other fields that use the "AccessAny" keyword. 14227 14228Fixed a problem introduced in the 11_02_01 release where indirect 14229stores through method arguments did not operate correctly. 14230 142312) Linux: 14232 14233Implemented boot-time ACPI table parsing support 14234(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 14235facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 14236legacy BIOS interfaces (e.g. MPS) for the configuration of system 14237processors, memory, and interrupts during setup_arch(). Note that 14238this patch does not include the required architecture-specific 14239changes required to apply this information -- subsequent patches 14240will be posted for both IA32 and IA64 to achieve this. 14241 14242Added low-level sleep support for IA32 platforms, courtesy of Pat 14243Mochel. This allows IA32 systems to transition to/from various 14244sleeping states (e.g. S1, S3), although the lack of a centralized 14245driver model and power-manageable drivers will prevent its 14246(successful) use on most systems. 14247 14248Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 14249submenu, unified IA32 and IA64 options, added new "Boot using ACPI 14250tables" option, etc. 14251 14252Increased the default timeout for the EC driver from 1ms to 10ms 14253(1000 cycles of 10us) to try to address AE_TIME errors during EC 14254transactions. 14255 14256 ---------------------------------------- 14257Summary of changes for this label: 11_02_01 14258 142591) ACPI CA Core Subsystem: 14260 14261ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 14262(QWordAcc keyword). All ACPI 2.0 64-bit support is now 14263implemented. 14264 14265OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 14266changes to support ACPI 2.0 Qword field access. Read/Write 14267PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 14268accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 14269the value parameter for the address space handler interface is now 14270an ACPI_INTEGER. OSL implementations of these interfaces must now 14271handle the case where the Width parameter is 64. 14272 14273Index Fields: Fixed a problem where unaligned bit assembly and 14274disassembly for IndexFields was not supported correctly. 14275 14276Index and Bank Fields: Nested Index and Bank Fields are now 14277supported. During field access, a check is performed to ensure 14278that the value written to an Index or Bank register is not out of 14279the range of the register. The Index (or Bank) register is 14280written before each access to the field data. Future support will 14281include allowing individual IndexFields to be wider than the 14282DataRegister width. 14283 14284Fields: Fixed a problem where the AML interpreter was incorrectly 14285attempting to write beyond the end of a Field/OpRegion. This was 14286a boundary case that occurred when a DWORD field was written to a 14287BYTE access OpRegion, forcing multiple writes and causing the 14288interpreter to write one datum too many. 14289 14290Fields: Fixed a problem with Field/OpRegion access where the 14291starting bit address of a field was incorrectly calculated if the 14292current access type was wider than a byte (WordAcc, DwordAcc, or 14293QwordAcc). 14294 14295Fields: Fixed a problem where forward references to individual 14296FieldUnits (individual Field names within a Field definition) were 14297not resolved during the AML table load. 14298 14299Fields: Fixed a problem where forward references from a Field 14300definition to the parent Operation Region definition were not 14301resolved during the AML table load. 14302 14303Fields: Duplicate FieldUnit names within a scope are now detected 14304during AML table load. 14305 14306Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 14307returned an incorrect name for the root node. 14308 14309Code and Data Size: Code and Data optimizations have permitted new 14310feature development with an actual reduction in the library size. 14311Current core subsystem library sizes are shown below. These are 14312the code and data sizes for the acpica.lib produced by the 14313Microsoft Visual C++ 6.0 compiler, and these values do not include 14314any ACPI driver or OSPM code. The debug version of the code 14315includes the debug output trace mechanism and has a larger code 14316and data size. Note that these values will vary depending on the 14317efficiency of the compiler and the compiler options used during 14318generation. 14319 14320 Previous Release (10_18_01): 14321 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 14322 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 14323 14324 Current Release: 14325 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 14326 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 14327 14328 2) Linux: 14329 14330Improved /proc processor output (Pavel Machek) Re-added 14331MODULE_LICENSE("GPL") to all modules. 14332 14333 3) ASL Compiler version X2030: 14334 14335Duplicate FieldUnit names within a scope are now detected and 14336flagged as errors. 14337 14338 4) Documentation: 14339 14340Programmer Reference updated to reflect OSL and address space 14341handler interface changes described above. 14342 14343---------------------------------------- 14344Summary of changes for this label: 10_18_01 14345 14346ACPI CA Core Subsystem: 14347 14348Fixed a problem with the internal object reference count mechanism 14349that occasionally caused premature object deletion. This resolves 14350all of the outstanding problem reports where an object is deleted 14351in the middle of an interpreter evaluation. Although this problem 14352only showed up in rather obscure cases, the solution to the 14353problem involved an adjustment of all reference counts involving 14354objects attached to namespace nodes. 14355 14356Fixed a problem with Field support in the interpreter where 14357writing to an aligned field whose length is an exact multiple (2 14358or greater) of the field access granularity would cause an attempt 14359to write beyond the end of the field. 14360 14361The top level AML opcode execution functions within the 14362interpreter have been renamed with a more meaningful and 14363consistent naming convention. The modules exmonad.c and 14364exdyadic.c were eliminated. New modules are exoparg1.c, 14365exoparg2.c, exoparg3.c, and exoparg6.c. 14366 14367Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 14368 14369Fixed a problem where the AML debugger was causing some internal 14370objects to not be deleted during subsystem termination. 14371 14372Fixed a problem with the external AcpiEvaluateObject interface 14373where the subsystem would fault if the named object to be 14374evaluated refered to a constant such as Zero, Ones, etc. 14375 14376Fixed a problem with IndexFields and BankFields where the 14377subsystem would fault if the index, data, or bank registers were 14378not defined in the same scope as the field itself. 14379 14380Added printf format string checking for compilers that support 14381this feature. Corrected more than 50 instances of issues with 14382format specifiers within invocations of ACPI_DEBUG_PRINT 14383throughout the core subsystem code. 14384 14385The ASL "Revision" operator now returns the ACPI support level 14386implemented in the core - the value "2" since the ACPI 2.0 support 14387is more than 50% implemented. 14388 14389Enhanced the output of the AML debugger "dump namespace" command 14390to output in a more human-readable form. 14391 14392Current core subsystem library code sizes are shown below. These 14393 14394are the code and data sizes for the acpica.lib produced by the 14395Microsoft Visual C++ 6.0 compiler, and these values do not include 14396any ACPI driver or OSPM code. The debug version of the code 14397includes the full debug trace mechanism -- leading to a much 14398 14399larger code and data size. Note that these values will vary 14400depending on the efficiency of the compiler and the compiler 14401options used during generation. 14402 14403 Previous Label (09_20_01): 14404 Non-Debug Version: 65K Code, 5K Data, 70K Total 14405 Debug Version: 138K Code, 58K Data, 196K Total 14406 14407 This Label: 14408 14409 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 14410 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 14411 14412Linux: 14413 14414Implemented a "Bad BIOS Blacklist" to track machines that have 14415known ASL/AML problems. 14416 14417Enhanced the /proc interface for the thermal zone driver and added 14418support for _HOT (the critical suspend trip point). The 'info' 14419file now includes threshold/policy information, and allows setting 14420of _SCP (cooling preference) and _TZP (polling frequency) values 14421to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 14422frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 14423preference to the passive/quiet mode (if supported by the ASL). 14424 14425Implemented a workaround for a gcc bug that resuted in an OOPs 14426when loading the control method battery driver. 14427 14428 ---------------------------------------- 14429Summary of changes for this label: 09_20_01 14430 14431 ACPI CA Core Subsystem: 14432 14433The AcpiEnableEvent and AcpiDisableEvent interfaces have been 14434modified to allow individual GPE levels to be flagged as wake- 14435enabled (i.e., these GPEs are to remain enabled when the platform 14436sleeps.) 14437 14438The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 14439support wake-enabled GPEs. This means that upon entering the 14440sleep state, all GPEs that are not wake-enabled are disabled. 14441When leaving the sleep state, these GPEs are reenabled. 14442 14443A local double-precision divide/modulo module has been added to 14444enhance portability to OS kernels where a 64-bit math library is 14445not available. The new module is "utmath.c". 14446 14447Several optimizations have been made to reduce the use of CPU 14448stack. Originally over 2K, the maximum stack usage is now below 144492K at 1860 bytes (1.82k) 14450 14451Fixed a problem with the AcpiGetFirmwareTable interface where the 14452root table pointer was not mapped into a logical address properly. 14453 14454Fixed a problem where a NULL pointer was being dereferenced in the 14455interpreter code for the ASL Notify operator. 14456 14457Fixed a problem where the use of the ASL Revision operator 14458returned an error. This operator now returns the current version 14459of the ACPI CA core subsystem. 14460 14461Fixed a problem where objects passed as control method parameters 14462to AcpiEvaluateObject were always deleted at method termination. 14463However, these objects may end up being stored into the namespace 14464by the called method. The object reference count mechanism was 14465applied to these objects instead of a force delete. 14466 14467Fixed a problem where static strings or buffers (contained in the 14468AML code) that are declared as package elements within the ASL 14469code could cause a fault because the interpreter would attempt to 14470delete them. These objects are now marked with the "static 14471object" flag to prevent any attempt to delete them. 14472 14473Implemented an interpreter optimization to use operands directly 14474from the state object instead of extracting the operands to local 14475variables. This reduces stack use and code size, and improves 14476performance. 14477 14478The module exxface.c was eliminated as it was an unnecessary extra 14479layer of code. 14480 14481Current core subsystem library code sizes are shown below. These 14482are the code and data sizes for the acpica.lib produced by the 14483Microsoft Visual C++ 6.0 compiler, and these values do not include 14484any ACPI driver or OSPM code. The debug version of the code 14485includes the full debug trace mechanism -- leading to a much 14486larger code and data size. Note that these values will vary 14487depending on the efficiency of the compiler and the compiler 14488options used during generation. 14489 14490 Non-Debug Version: 65K Code, 5K Data, 70K Total 14491(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 14492Total (Previously 195K) 14493 14494Linux: 14495 14496Support for ACPI 2.0 64-bit integers has been added. All ACPI 14497Integer objects are now 64 bits wide 14498 14499All Acpi data types and structures are now in lower case. Only 14500Acpi macros are upper case for differentiation. 14501 14502 Documentation: 14503 14504Changes to the external interfaces as described above. 14505 14506 ---------------------------------------- 14507Summary of changes for this label: 08_31_01 14508 14509 ACPI CA Core Subsystem: 14510 14511A bug with interpreter implementation of the ASL Divide operator 14512was found and fixed. The implicit function return value (not the 14513explicit store operands) was returning the remainder instead of 14514the quotient. This was a longstanding bug and it fixes several 14515known outstanding issues on various platforms. 14516 14517The ACPI_DEBUG_PRINT and function trace entry/exit macros have 14518been further optimized for size. There are 700 invocations of the 14519DEBUG_PRINT macro alone, so each optimization reduces the size of 14520the debug version of the subsystem significantly. 14521 14522A stack trace mechanism has been implemented. The maximum stack 14523usage is about 2K on 32-bit platforms. The debugger command "stat 14524stack" will display the current maximum stack usage. 14525 14526All public symbols and global variables within the subsystem are 14527now prefixed with the string "Acpi". This keeps all of the 14528symbols grouped together in a kernel map, and avoids conflicts 14529with other kernel subsystems. 14530 14531Most of the internal fixed lookup tables have been moved into the 14532code segment via the const operator. 14533 14534Several enhancements have been made to the interpreter to both 14535reduce the code size and improve performance. 14536 14537Current core subsystem library code sizes are shown below. These 14538are the code and data sizes for the acpica.lib produced by the 14539Microsoft Visual C++ 6.0 compiler, and these values do not include 14540any ACPI driver or OSPM code. The debug version of the code 14541includes the full debug trace mechanism which contains over 700 14542invocations of the DEBUG_PRINT macro, 500 function entry macro 14543invocations, and over 900 function exit macro invocations -- 14544leading to a much larger code and data size. Note that these 14545values will vary depending on the efficiency of the compiler and 14546the compiler options used during generation. 14547 14548 Non-Debug Version: 64K Code, 5K Data, 69K Total 14549Debug Version: 137K Code, 58K Data, 195K Total 14550 14551 Linux: 14552 14553Implemented wbinvd() macro, pending a kernel-wide definition. 14554 14555Fixed /proc/acpi/event to handle poll() and short reads. 14556 14557 ASL Compiler, version X2026: 14558 14559Fixed a problem introduced in the previous label where the AML 14560 14561code emitted for package objects produced packages with zero 14562length. 14563 14564 ---------------------------------------- 14565Summary of changes for this label: 08_16_01 14566 14567ACPI CA Core Subsystem: 14568 14569The following ACPI 2.0 ASL operators have been implemented in the 14570AML interpreter (These are already supported by the Intel ASL 14571compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 14572ToBuffer. Support for 64-bit AML constants is implemented in the 14573AML parser, debugger, and disassembler. 14574 14575The internal memory tracking mechanism (leak detection code) has 14576been upgraded to reduce the memory overhead (a separate tracking 14577block is no longer allocated for each memory allocation), and now 14578supports all of the internal object caches. 14579 14580The data structures and code for the internal object caches have 14581been coelesced and optimized so that there is a single cache and 14582memory list data structure and a single group of functions that 14583implement generic cache management. This has reduced the code 14584size in both the debug and release versions of the subsystem. 14585 14586The DEBUG_PRINT macro(s) have been optimized for size and replaced 14587by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 14588different, because it generates a single call to an internal 14589function. This results in a savings of about 90 bytes per 14590invocation, resulting in an overall code and data savings of about 1459116% in the debug version of the subsystem. 14592 14593 Linux: 14594 14595Fixed C3 disk corruption problems and re-enabled C3 on supporting 14596machines. 14597 14598Integrated low-level sleep code by Patrick Mochel. 14599 14600Further tweaked source code Linuxization. 14601 14602Other minor fixes. 14603 14604 ASL Compiler: 14605 14606Support for ACPI 2.0 variable length packages is fixed/completed. 14607 14608Fixed a problem where the optional length parameter for the ACPI 146092.0 ToString operator. 14610 14611Fixed multiple extraneous error messages when a syntax error is 14612detected within the declaration line of a control method. 14613 14614 ---------------------------------------- 14615Summary of changes for this label: 07_17_01 14616 14617ACPI CA Core Subsystem: 14618 14619Added a new interface named AcpiGetFirmwareTable to obtain any 14620ACPI table via the ACPI signature. The interface can be called at 14621any time during kernel initialization, even before the kernel 14622virtual memory manager is initialized and paging is enabled. This 14623allows kernel subsystems to obtain ACPI tables very early, even 14624before the ACPI CA subsystem is initialized. 14625 14626Fixed a problem where Fields defined with the AnyAcc attribute 14627could be resolved to the incorrect address under the following 14628conditions: 1) the field width is larger than 8 bits and 2) the 14629parent operation region is not defined on a DWORD boundary. 14630 14631Fixed a problem where the interpreter is not being locked during 14632namespace initialization (during execution of the _INI control 14633methods), causing an error when an attempt is made to release it 14634later. 14635 14636ACPI 2.0 support in the AML Interpreter has begun and will be 14637ongoing throughout the rest of this year. In this label, The Mod 14638operator is implemented. 14639 14640Added a new data type to contain full PCI addresses named 14641ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 14642and Function values. 14643 14644 Linux: 14645 14646Enhanced the Linux version of the source code to change most 14647capitalized ACPI type names to lowercase. For example, all 14648instances of ACPI_STATUS are changed to acpi_status. This will 14649result in a large diff, but the change is strictly cosmetic and 14650aligns the CA code closer to the Linux coding standard. 14651 14652OSL Interfaces: 14653 14654The interfaces to the PCI configuration space have been changed to 14655add the PCI Segment number and to split the single 32-bit combined 14656DeviceFunction field into two 16-bit fields. This was 14657accomplished by moving the four values that define an address in 14658PCI configuration space (segment, bus, device, and function) to 14659the new ACPI_PCI_ID structure. 14660 14661The changes to the PCI configuration space interfaces led to a 14662reexamination of the complete set of address space access 14663interfaces for PCI, I/O, and Memory. The previously existing 18 14664interfaces have proven difficult to maintain (any small change 14665must be propagated across at least 6 interfaces) and do not easily 14666allow for future expansion to 64 bits if necessary. Also, on some 14667systems, it would not be appropriate to demultiplex the access 14668width (8, 16, 32,or 64) before calling the OSL if the 14669corresponding native OS interfaces contain a similar access width 14670parameter. For these reasons, the 18 address space interfaces 14671have been replaced by these 6 new ones: 14672 14673AcpiOsReadPciConfiguration 14674AcpiOsWritePciConfiguration 14675AcpiOsReadMemory 14676AcpiOsWriteMemory 14677AcpiOsReadPort 14678AcpiOsWritePort 14679 14680Added a new interface named AcpiOsGetRootPointer to allow the OSL 14681to perform the platform and/or OS-specific actions necessary to 14682obtain the ACPI RSDP table pointer. On IA-32 platforms, this 14683interface will simply call down to the CA core to perform the low- 14684memory search for the table. On IA-64, the RSDP is obtained from 14685EFI. Migrating this interface to the OSL allows the CA core to 14686 14687remain OS and platform independent. 14688 14689Added a new interface named AcpiOsSignal to provide a generic 14690"function code and pointer" interface for various miscellaneous 14691signals and notifications that must be made to the host OS. The 14692first such signals are intended to support the ASL Fatal and 14693Breakpoint operators. In the latter case, the AcpiOsBreakpoint 14694interface has been obsoleted. 14695 14696The definition of the AcpiFormatException interface has been 14697changed to simplify its use. The caller no longer must supply a 14698buffer to the call; A pointer to a const string is now returned 14699directly. This allows the call to be easily used in printf 14700statements, etc. since the caller does not have to manage a local 14701buffer. 14702 14703 14704 ASL Compiler, Version X2025: 14705 14706The ACPI 2.0 Switch/Case/Default operators have been implemented 14707and are fully functional. They will work with all ACPI 1.0 14708interpreters, since the operators are simply translated to If/Else 14709pairs. 14710 14711The ACPI 2.0 ElseIf operator is implemented and will also work 14712with 1.0 interpreters, for the same reason. 14713 14714Implemented support for ACPI 2.0 variable-length packages. These 14715packages have a separate opcode, and their size is determined by 14716the interpreter at run-time. 14717 14718Documentation The ACPI CA Programmer Reference has been updated to 14719reflect the new interfaces and changes to existing interfaces. 14720 14721 ------------------------------------------ 14722Summary of changes for this label: 06_15_01 14723 14724 ACPI CA Core Subsystem: 14725 14726Fixed a problem where a DWORD-accessed field within a Buffer 14727object would get its byte address inadvertently rounded down to 14728the nearest DWORD. Buffers are always Byte-accessible. 14729 14730 ASL Compiler, version X2024: 14731 14732Fixed a problem where the Switch() operator would either fault or 14733hang the compiler. Note however, that the AML code for this ACPI 147342.0 operator is not yet implemented. 14735 14736Compiler uses the new AcpiOsGetTimer interface to obtain compile 14737timings. 14738 14739Implementation of the CreateField operator automatically converts 14740a reference to a named field within a resource descriptor from a 14741byte offset to a bit offset if required. 14742 14743Added some missing named fields from the resource descriptor 14744support. These are the names that are automatically created by the 14745compiler to reference fields within a descriptor. They are only 14746valid at compile time and are not passed through to the AML 14747interpreter. 14748 14749Resource descriptor named fields are now typed as Integers and 14750subject to compile-time typechecking when used in expressions. 14751 14752 ------------------------------------------ 14753Summary of changes for this label: 05_18_01 14754 14755 ACPI CA Core Subsystem: 14756 14757Fixed a couple of problems in the Field support code where bits 14758from adjacent fields could be returned along with the proper field 14759bits. Restructured the field support code to improve performance, 14760readability and maintainability. 14761 14762New DEBUG_PRINTP macro automatically inserts the procedure name 14763into the output, saving hundreds of copies of procedure name 14764strings within the source, shrinking the memory footprint of the 14765debug version of the core subsystem. 14766 14767 Source Code Structure: 14768 14769The source code directory tree was restructured to reflect the 14770current organization of the component architecture. Some files 14771and directories have been moved and/or renamed. 14772 14773 Linux: 14774 14775Fixed leaking kacpidpc processes. 14776 14777Fixed queueing event data even when /proc/acpi/event is not 14778opened. 14779 14780 ASL Compiler, version X2020: 14781 14782Memory allocation performance enhancement - over 24X compile time 14783improvement on large ASL files. Parse nodes and namestring 14784buffers are now allocated from a large internal compiler buffer. 14785 14786The temporary .SRC file is deleted unless the "-s" option is 14787specified 14788 14789The "-d" debug output option now sends all output to the .DBG file 14790instead of the console. 14791 14792"External" second parameter is now optional 14793 14794"ElseIf" syntax now properly allows the predicate 14795 14796Last operand to "Load" now recognized as a Target operand 14797 14798Debug object can now be used anywhere as a normal object. 14799 14800ResourceTemplate now returns an object of type BUFFER 14801 14802EISAID now returns an object of type INTEGER 14803 14804"Index" now works with a STRING operand 14805 14806"LoadTable" now accepts optional parameters 14807 14808"ToString" length parameter is now optional 14809 14810"Interrupt (ResourceType," parse error fixed. 14811 14812"Register" with a user-defined region space parse error fixed 14813 14814Escaped backslash at the end of a string ("\\") scan/parse error 14815fixed 14816 14817"Revision" is now an object of type INTEGER. 14818 14819 14820 14821------------------------------------------ 14822Summary of changes for this label: 05_02_01 14823 14824Linux: 14825 14826/proc/acpi/event now blocks properly. 14827 14828Removed /proc/sys/acpi. You can still dump your DSDT from 14829/proc/acpi/dsdt. 14830 14831 ACPI CA Core Subsystem: 14832 14833Fixed a problem introduced in the previous label where some of the 14834"small" resource descriptor types were not recognized. 14835 14836Improved error messages for the case where an ASL Field is outside 14837the range of the parent operation region. 14838 14839 ASL Compiler, version X2018: 14840 14841 14842Added error detection for ASL Fields that extend beyond the length 14843of the parent operation region (only if the length of the region 14844is known at compile time.) This includes fields that have a 14845minimum access width that is smaller than the parent region, and 14846individual field units that are partially or entirely beyond the 14847extent of the parent. 14848 14849 14850 14851------------------------------------------ 14852Summary of changes for this label: 04_27_01 14853 14854 ACPI CA Core Subsystem: 14855 14856Fixed a problem where the namespace mutex could be released at the 14857wrong time during execution of AcpiRemoveAddressSpaceHandler. 14858 14859Added optional thread ID output for debug traces, to simplify 14860debugging of multiple threads. Added context switch notification 14861when the debug code realizes that a different thread is now 14862executing ACPI code. 14863 14864Some additional external data types have been prefixed with the 14865string "ACPI_" for consistency. This may effect existing code. 14866The data types affected are the external callback typedefs - e.g., 14867 14868WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 14869 14870 Linux: 14871 14872Fixed an issue with the OSL semaphore implementation where a 14873thread was waking up with an error from receiving a SIGCHLD 14874signal. 14875 14876Linux version of ACPI CA now uses the system C library for string 14877manipulation routines instead of a local implementation. 14878 14879Cleaned up comments and removed TBDs. 14880 14881 ASL Compiler, version X2017: 14882 14883Enhanced error detection and reporting for all file I/O 14884operations. 14885 14886 Documentation: 14887 14888Programmer Reference updated to version 1.06. 14889 14890 14891 14892------------------------------------------ 14893Summary of changes for this label: 04_13_01 14894 14895 ACPI CA Core Subsystem: 14896 14897Restructured support for BufferFields and RegionFields. 14898BankFields support is now fully operational. All known 32-bit 14899limitations on field sizes have been removed. Both BufferFields 14900and (Operation) RegionFields are now supported by the same field 14901management code. 14902 14903Resource support now supports QWORD address and IO resources. The 1490416/32/64 bit address structures and the Extended IRQ structure 14905have been changed to properly handle Source Resource strings. 14906 14907A ThreadId of -1 is now used to indicate a "mutex not acquired" 14908condition internally and must never be returned by AcpiOsThreadId. 14909This reserved value was changed from 0 since Unix systems allow a 14910thread ID of 0. 14911 14912Linux: 14913 14914Driver code reorganized to enhance portability 14915 14916Added a kernel configuration option to control ACPI_DEBUG 14917 14918Fixed the EC driver to honor _GLK. 14919 14920ASL Compiler, version X2016: 14921 14922Fixed support for the "FixedHw" keyword. Previously, the FixedHw 14923address space was set to 0, not 0x7f as it should be. 14924 14925 ------------------------------------------ 14926Summary of changes for this label: 03_13_01 14927 14928 ACPI CA Core Subsystem: 14929 14930During ACPI initialization, the _SB_._INI method is now run if 14931present. 14932 14933Notify handler fix - notifies are deferred until the parent method 14934completes execution. This fixes the "mutex already acquired" 14935issue seen occasionally. 14936 14937Part of the "implicit conversion" rules in ACPI 2.0 have been 14938found to cause compatibility problems with existing ASL/AML. The 14939convert "result-to-target-type" implementation has been removed 14940for stores to method Args and Locals. Source operand conversion 14941is still fully implemented. Possible changes to ACPI 2.0 14942specification pending. 14943 14944Fix to AcpiRsCalculatePciRoutingTableLength to return correct 14945length. 14946 14947Fix for compiler warnings for 64-bit compiles. 14948 14949 Linux: 14950 14951/proc output aligned for easier parsing. 14952 14953Release-version compile problem fixed. 14954 14955New kernel configuration options documented in Configure.help. 14956 14957IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 14958context" message. 14959 14960 OSPM: 14961 14962Power resource driver integrated with bus manager. 14963 14964Fixed kernel fault during active cooling for thermal zones. 14965 14966Source Code: 14967 14968The source code tree has been restructured. 14969 14970 14971 14972------------------------------------------ 14973Summary of changes for this label: 03_02_01 14974 14975 Linux OS Services Layer (OSL): 14976 14977Major revision of all Linux-specific code. 14978 14979Modularized all ACPI-specific drivers. 14980 14981Added new thermal zone and power resource drivers. 14982 14983Revamped /proc interface (new functionality is under /proc/acpi). 14984 14985New kernel configuration options. 14986 14987 Linux known issues: 14988 14989New kernel configuration options not documented in Configure.help 14990yet. 14991 14992 14993Module dependencies not currently implemented. If used, they 14994should be loaded in this order: busmgr, power, ec, system, 14995processor, battery, ac_adapter, button, thermal. 14996 14997Modules will not load if CONFIG_MODVERSION is set. 14998 14999IBM 600E - entering S5 may reboot instead of shutting down. 15000 15001IBM 600E - Sleep button may generate "Invalid <NULL> context" 15002message. 15003 15004Some systems may fail with "execution mutex already acquired" 15005message. 15006 15007 ACPI CA Core Subsystem: 15008 15009Added a new OSL Interface, AcpiOsGetThreadId. This was required 15010for the deadlock detection code. Defined to return a non-zero, 32- 15011bit thread ID for the currently executing thread. May be a non- 15012zero constant integer on single-thread systems. 15013 15014Implemented deadlock detection for internal subsystem mutexes. We 15015may add conditional compilation for this code (debug only) later. 15016 15017ASL/AML Mutex object semantics are now fully supported. This 15018includes multiple acquires/releases by owner and support for the 15019 15020Mutex SyncLevel parameter. 15021 15022A new "Force Release" mechanism automatically frees all ASL 15023Mutexes that have been acquired but not released when a thread 15024exits the interpreter. This forces conformance to the ACPI spec 15025("All mutexes must be released when an invocation exits") and 15026prevents deadlocked ASL threads. This mechanism can be expanded 15027(later) to monitor other resource acquisitions if OEM ASL code 15028continues to misbehave (which it will). 15029 15030Several new ACPI exception codes have been added for the Mutex 15031support. 15032 15033Recursive method calls are now allowed and supported (the ACPI 15034spec does in fact allow recursive method calls.) The number of 15035recursive calls is subject to the restrictions imposed by the 15036SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 15037parameter. 15038 15039Implemented support for the SyncLevel parameter for control 15040methods (ACPI 2.0 feature) 15041 15042Fixed a deadlock problem when multiple threads attempted to use 15043the interpreter. 15044 15045Fixed a problem where the string length of a String package 15046element was not always set in a package returned from 15047AcpiEvaluateObject. 15048 15049Fixed a problem where the length of a String package element was 15050not always included in the length of the overall package returned 15051from AcpiEvaluateObject. 15052 15053Added external interfaces (Acpi*) to the ACPI debug memory 15054manager. This manager keeps a list of all outstanding 15055allocations, and can therefore detect memory leaks and attempts to 15056free memory blocks more than once. Useful for code such as the 15057power manager, etc. May not be appropriate for device drivers. 15058Performance with the debug code enabled is slow. 15059 15060The ACPI Global Lock is now an optional hardware element. 15061 15062 ASL Compiler Version X2015: 15063 15064Integrated changes to allow the compiler to be generated on 15065multiple platforms. 15066 15067Linux makefile added to generate the compiler on Linux 15068 15069 Source Code: 15070 15071All platform-specific headers have been moved to their own 15072subdirectory, Include/Platform. 15073 15074New source file added, Interpreter/ammutex.c 15075 15076New header file, Include/acstruct.h 15077 15078 Documentation: 15079 15080The programmer reference has been updated for the following new 15081interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 15082 15083 ------------------------------------------ 15084Summary of changes for this label: 02_08_01 15085 15086Core ACPI CA Subsystem: Fixed a problem where an error was 15087incorrectly returned if the return resource buffer was larger than 15088the actual data (in the resource interfaces). 15089 15090References to named objects within packages are resolved to the 15091 15092full pathname string before packages are returned directly (via 15093the AcpiEvaluateObject interface) or indirectly via the resource 15094interfaces. 15095 15096Linux OS Services Layer (OSL): 15097 15098Improved /proc battery interface. 15099 15100 15101Added C-state debugging output and other miscellaneous fixes. 15102 15103ASL Compiler Version X2014: 15104 15105All defined method arguments can now be used as local variables, 15106including the ones that are not actually passed in as parameters. 15107The compiler tracks initialization of the arguments and issues an 15108exception if they are used without prior assignment (just like 15109locals). 15110 15111The -o option now specifies a filename prefix that is used for all 15112output files, including the AML output file. Otherwise, the 15113default behavior is as follows: 1) the AML goes to the file 15114specified in the DSDT. 2) all other output files use the input 15115source filename as the base. 15116 15117 ------------------------------------------ 15118Summary of changes for this label: 01_25_01 15119 15120Core ACPI CA Subsystem: Restructured the implementation of object 15121store support within the interpreter. This includes support for 15122the Store operator as well as any ASL operators that include a 15123target operand. 15124 15125Partially implemented support for Implicit Result-to-Target 15126conversion. This is when a result object is converted on the fly 15127to the type of an existing target object. Completion of this 15128support is pending further analysis of the ACPI specification 15129concerning this matter. 15130 15131CPU-specific code has been removed from the subsystem (hardware 15132directory). 15133 15134New Power Management Timer functions added 15135 15136Linux OS Services Layer (OSL): Moved system state transition code 15137to the core, fixed it, and modified Linux OSL accordingly. 15138 15139Fixed C2 and C3 latency calculations. 15140 15141 15142We no longer use the compilation date for the version message on 15143initialization, but retrieve the version from AcpiGetSystemInfo(). 15144 15145Incorporated for fix Sony VAIO machines. 15146 15147Documentation: The Programmer Reference has been updated and 15148reformatted. 15149 15150 15151ASL Compiler: Version X2013: Fixed a problem where the line 15152numbering and error reporting could get out of sync in the 15153presence of multiple include files. 15154 15155 ------------------------------------------ 15156Summary of changes for this label: 01_15_01 15157 15158Core ACPI CA Subsystem: 15159 15160Implemented support for type conversions in the execution of the 15161ASL Concatenate operator (The second operand is converted to 15162match the type of the first operand before concatenation.) 15163 15164Support for implicit source operand conversion is partially 15165implemented. The ASL source operand types Integer, Buffer, and 15166String are freely interchangeable for most ASL operators and are 15167converted by the interpreter on the fly as required. Implicit 15168Target operand conversion (where the result is converted to the 15169target type before storing) is not yet implemented. 15170 15171Support for 32-bit and 64-bit BCD integers is implemented. 15172 15173Problem fixed where a field read on an aligned field could cause a 15174read past the end of the field. 15175 15176New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 15177does not return a value, but the caller expects one. (The ASL 15178compiler flags this as a warning.) 15179 15180ASL Compiler: 15181 15182Version X2011: 151831. Static typechecking of all operands is implemented. This 15184prevents the use of invalid objects (such as using a Package where 15185an Integer is required) at compile time instead of at interpreter 15186run-time. 151872. The ASL source line is printed with ALL errors and warnings. 151883. Bug fix for source EOF without final linefeed. 151894. Debug option is split into a parse trace and a namespace trace. 151905. Namespace output option (-n) includes initial values for 15191integers and strings. 151926. Parse-only option added for quick syntax checking. 151937. Compiler checks for duplicate ACPI name declarations 15194 15195Version X2012: 151961. Relaxed typechecking to allow interchangeability between 15197strings, integers, and buffers. These types are now converted by 15198the interpreter at runtime. 151992. Compiler reports time taken by each internal subsystem in the 15200debug output file. 15201 15202 15203 ------------------------------------------ 15204Summary of changes for this label: 12_14_00 15205 15206ASL Compiler: 15207 15208This is the first official release of the compiler. Since the 15209compiler requires elements of the Core Subsystem, this label 15210synchronizes everything. 15211 15212------------------------------------------ 15213Summary of changes for this label: 12_08_00 15214 15215 15216Fixed a problem where named references within the ASL definition 15217of both OperationRegions and CreateXXXFields did not work 15218properly. The symptom was an AE_AML_OPERAND_TYPE during 15219initialization of the region/field. This is similar (but not 15220related internally) to the problem that was fixed in the last 15221label. 15222 15223Implemented both 32-bit and 64-bit support for the BCD ASL 15224functions ToBCD and FromBCD. 15225 15226Updated all legal headers to include "2000" in the copyright 15227years. 15228 15229 ------------------------------------------ 15230Summary of changes for this label: 12_01_00 15231 15232Fixed a problem where method invocations within the ASL definition 15233of both OperationRegions and CreateXXXFields did not work 15234properly. The symptom was an AE_AML_OPERAND_TYPE during 15235initialization of the region/field: 15236 15237 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 15238[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 15239(0x3005) 15240 15241Fixed a problem where operators with more than one nested 15242subexpression would fail. The symptoms were varied, by mostly 15243AE_AML_OPERAND_TYPE errors. This was actually a rather serious 15244problem that has gone unnoticed until now. 15245 15246 Subtract (Add (1,2), Multiply (3,4)) 15247 15248Fixed a problem where AcpiGetHandle didn't quite get fixed in the 15249previous build (The prefix part of a relative path was handled 15250incorrectly). 15251 15252Fixed a problem where Operation Region initialization failed if 15253the operation region name was a "namepath" instead of a simple 15254"nameseg". Symptom was an AE_NO_OPERAND error. 15255 15256Fixed a problem where an assignment to a local variable via the 15257indirect RefOf mechanism only worked for the first such 15258assignment. Subsequent assignments were ignored. 15259 15260 ------------------------------------------ 15261Summary of changes for this label: 11_15_00 15262 15263ACPI 2.0 table support with backwards support for ACPI 1.0 and the 152640.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 15265the AML interpreter does NOT have support for the new 2.0 ASL 15266grammar terms at this time. 15267 15268All ACPI hardware access is via the GAS structures in the ACPI 2.0 15269FADT. 15270 15271All physical memory addresses across all platforms are now 64 bits 15272wide. Logical address width remains dependent on the platform 15273(i.e., "void *"). 15274 15275AcpiOsMapMemory interface changed to a 64-bit physical address. 15276 15277The AML interpreter integer size is now 64 bits, as per the ACPI 152782.0 specification. 15279 15280For backwards compatibility with ACPI 1.0, ACPI tables with a 15281revision number less than 2 use 32-bit integers only. 15282 15283Fixed a problem where the evaluation of OpRegion operands did not 15284always resolve them to numbers properly. 15285 15286------------------------------------------ 15287Summary of changes for this label: 10_20_00 15288 15289Fix for CBN_._STA issue. This fix will allow correct access to 15290CBN_ OpRegions when the _STA returns 0x8. 15291 15292Support to convert ACPI constants (Ones, Zeros, One) to actual 15293values before a package object is returned 15294 15295Fix for method call as predicate to if/while construct causing 15296incorrect if/while behavior 15297 15298Fix for Else block package lengths sometimes calculated wrong (if 15299block > 63 bytes) 15300 15301Fix for Processor object length field, was always zero 15302 15303Table load abort if FACP sanity check fails 15304 15305Fix for problem with Scope(name) if name already exists 15306 15307Warning emitted if a named object referenced cannot be found 15308(resolved) during method execution. 15309 15310 15311 15312 15313 15314------------------------------------------ 15315Summary of changes for this label: 9_29_00 15316 15317New table initialization interfaces: AcpiInitializeSubsystem no 15318longer has any parameters AcpiFindRootPointer - Find the RSDP (if 15319necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 15320>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 15321AcpiLoadTables 15322 15323Note: These interface changes require changes to all existing OSDs 15324 15325The PCI_Config default address space handler is always installed 15326at the root namespace object. 15327 15328------------------------------------------- 15329Summary of changes for this label: 09_15_00 15330 15331The new initialization architecture is implemented. New 15332interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 15333AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 15334 15335(Namespace is automatically loaded when a table is loaded) 15336 15337The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1533852 bytes to 32 bytes. There is usually one of these for every 15339namespace object, so the memory savings is significant. 15340 15341Implemented just-in-time evaluation of the CreateField operators. 15342 15343Bug fixes for IA-64 support have been integrated. 15344 15345Additional code review comments have been implemented 15346 15347The so-called "third pass parse" has been replaced by a final walk 15348through the namespace to initialize all operation regions (address 15349spaces) and fields that have not yet been initialized during the 15350execution of the various _INI and REG methods. 15351 15352New file - namespace/nsinit.c 15353 15354------------------------------------------- 15355Summary of changes for this label: 09_01_00 15356 15357Namespace manager data structures have been reworked to change the 15358primary object from a table to a single object. This has 15359resulted in dynamic memory savings of 3X within the namespace and 153602X overall in the ACPI CA subsystem. 15361 15362Fixed problem where the call to AcpiEvFindPciRootBuses was 15363inadvertently left commented out. 15364 15365Reduced the warning count when generating the source with the GCC 15366compiler. 15367 15368Revision numbers added to each module header showing the 15369SourceSafe version of the file. Please refer to this version 15370number when giving us feedback or comments on individual modules. 15371 15372The main object types within the subsystem have been renamed to 15373clarify their purpose: 15374 15375ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 15376ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 15377ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 15378 15379NOTE: no changes to the initialization sequence are included in 15380this label. 15381 15382------------------------------------------- 15383Summary of changes for this label: 08_23_00 15384 15385Fixed problem where TerminateControlMethod was being called 15386multiple times per method 15387 15388Fixed debugger problem where single stepping caused a semaphore to 15389be oversignalled 15390 15391Improved performance through additional parse object caching - 15392added ACPI_EXTENDED_OP type 15393 15394------------------------------------------- 15395Summary of changes for this label: 08_10_00 15396 15397Parser/Interpreter integration: Eliminated the creation of 15398complete parse trees for ACPI tables and control methods. 15399Instead, parse subtrees are created and then deleted as soon as 15400they are processed (Either entered into the namespace or executed 15401by the interpreter). This reduces the use of dynamic kernel 15402memory significantly. (about 10X) 15403 15404Exception codes broken into classes and renumbered. Be sure to 15405recompile all code that includes acexcep.h. Hopefully we won't 15406have to renumber the codes again now that they are split into 15407classes (environment, programmer, AML code, ACPI table, and 15408internal). 15409 15410Fixed some additional alignment issues in the Resource Manager 15411subcomponent 15412 15413Implemented semaphore tracking in the AcpiExec utility, and fixed 15414several places where mutexes/semaphores were being unlocked 15415without a corresponding lock operation. There are no known 15416semaphore or mutex "leaks" at this time. 15417 15418Fixed the case where an ASL Return operator is used to return an 15419unnamed package. 15420 15421------------------------------------------- 15422Summary of changes for this label: 07_28_00 15423 15424Fixed a problem with the way addresses were calculated in 15425AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 15426manifested itself when a Field was created with WordAccess or 15427DwordAccess, but the field unit defined within the Field was less 15428 15429than a Word or Dword. 15430 15431Fixed a problem in AmlDumpOperands() module's loop to pull 15432operands off of the operand stack to display information. The 15433problem manifested itself as a TLB error on 64-bit systems when 15434accessing an operand stack with two or more operands. 15435 15436Fixed a problem with the PCI configuration space handlers where 15437context was getting confused between accesses. This required a 15438change to the generic address space handler and address space 15439setup definitions. Handlers now get both a global handler context 15440(this is the one passed in by the user when executing 15441AcpiInstallAddressSpaceHandler() and a specific region context 15442that is unique to each region (For example, the _ADR, _SEG and 15443_BBN values associated with a specific region). The generic 15444function definitions have changed to the following: 15445 15446typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 15447UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 15448*HandlerContext, // This used to be void *Context void 15449*RegionContext); // This is an additional parameter 15450 15451typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 15452RegionHandle, UINT32 Function, void *HandlerContext, void 15453**RegionContext); // This used to be **ReturnContext 15454 15455------------------------------------------- 15456Summary of changes for this label: 07_21_00 15457 15458Major file consolidation and rename. All files within the 15459interpreter have been renamed as well as most header files. This 15460was done to prevent collisions with existing files in the host 15461OSs -- filenames such as "config.h" and "global.h" seem to be 15462quite common. The VC project files have been updated. All 15463makefiles will require modification. 15464 15465The parser/interpreter integration continues in Phase 5 with the 15466implementation of a complete 2-pass parse (the AML is parsed 15467twice) for each table; This avoids the construction of a huge 15468parse tree and therefore reduces the amount of dynamic memory 15469required by the subsystem. Greater use of the parse object cache 15470means that performance is unaffected. 15471 15472Many comments from the two code reviews have been rolled in. 15473 15474The 64-bit alignment support is complete. 15475 15476------------------------------------------- 15477Summary of changes for this label: 06_30_00 15478 15479With a nod and a tip of the hat to the technology of yesteryear, 15480we've added support in the source code for 80 column output 15481devices. The code is now mostly constrained to 80 columns or 15482less to support environments and editors that 1) cannot display 15483or print more than 80 characters on a single line, and 2) cannot 15484disable line wrapping. 15485 15486A major restructuring of the namespace data structure has been 15487completed. The result is 1) cleaner and more 15488understandable/maintainable code, and 2) a significant reduction 15489in the dynamic memory requirement for each named ACPI object 15490(almost half). 15491 15492------------------------------------------- 15493Summary of changes for this label: 06_23_00 15494 15495Linux support has been added. In order to obtain approval to get 15496the ACPI CA subsystem into the Linux kernel, we've had to make 15497quite a few changes to the base subsystem that will affect all 15498users (all the changes are generic and OS- independent). The 15499effects of these global changes have been somewhat far reaching. 15500Files have been merged and/or renamed and interfaces have been 15501renamed. The major changes are described below. 15502 15503Osd* interfaces renamed to AcpiOs* to eliminate namespace 15504pollution/confusion within our target kernels. All OSD 15505interfaces must be modified to match the new naming convention. 15506 15507Files merged across the subsystem. A number of the smaller source 15508and header files have been merged to reduce the file count and 15509increase the density of the existing files. There are too many 15510to list here. In general, makefiles that call out individual 15511files will require rebuilding. 15512 15513Interpreter files renamed. All interpreter files now have the 15514prefix am* instead of ie* and is*. 15515 15516Header files renamed: The acapi.h file is now acpixf.h. The 15517acpiosd.h file is now acpiosxf.h. We are removing references to 15518the acronym "API" since it is somewhat windowsy. The new name is 15519"external interface" or xface or xf in the filenames.j 15520 15521 15522All manifest constants have been forced to upper case (some were 15523mixed case.) Also, the string "ACPI_" has been prepended to many 15524(not all) of the constants, typedefs, and structs. 15525 15526The globals "DebugLevel" and "DebugLayer" have been renamed 15527"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 15528 15529All other globals within the subsystem are now prefixed with 15530"AcpiGbl_" Internal procedures within the subsystem are now 15531prefixed with "Acpi" (with only a few exceptions). The original 15532two-letter abbreviation for the subcomponent remains after "Acpi" 15533- for example, CmCallocate became AcpiCmCallocate. 15534 15535Added a source code translation/conversion utility. Used to 15536generate the Linux source code, it can be modified to generate 15537other types of source as well. Can also be used to cleanup 15538existing source by removing extraneous spaces and blank lines. 15539Found in tools/acpisrc/* 15540 15541OsdUnMapMemory was renamed to OsdUnmapMemory and then 15542AcpiOsUnmapMemory. (UnMap became Unmap). 15543 15544A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 15545When set to one, this indicates that the caller wants to use the 15546 15547semaphore as a mutex, not a counting semaphore. ACPI CA uses 15548both types. However, implementers of this call may want to use 15549different OS primitives depending on the type of semaphore 15550requested. For example, some operating systems provide separate 15551 15552"mutex" and "semaphore" interfaces - where the mutex interface is 15553much faster because it doesn't have all the overhead of a full 15554semaphore implementation. 15555 15556Fixed a deadlock problem where a method that accesses the PCI 15557address space can block forever if it is the first access to the 15558space. 15559 15560------------------------------------------- 15561Summary of changes for this label: 06_02_00 15562 15563Support for environments that cannot handle unaligned data 15564accesses (e.g. firmware and OS environments devoid of alignment 15565handler technology namely SAL/EFI and the IA-64 Linux kernel) has 15566been added (via configurable macros) in these three areas: - 15567Transfer of data from the raw AML byte stream is done via byte 15568moves instead of word/dword/qword moves. - External objects are 15569aligned within the user buffer, including package elements (sub- 15570objects). - Conversion of name strings to UINT32 Acpi Names is now 15571done byte-wise. 15572 15573The Store operator was modified to mimic Microsoft's 15574implementation when storing to a Buffer Field. 15575 15576Added a check of the BM_STS bit before entering C3. 15577 15578The methods subdirectory has been obsoleted and removed. A new 15579file, cmeval.c subsumes the functionality. 15580 15581A 16-bit (DOS) version of AcpiExec has been developed. The 15582makefile is under the acpiexec directory. 15583