changes.txt revision 1.1.1.8
1 ---------------------------------------- 2 8 January 2016. Summary of changes for version 20160108: 3 4 1) ACPICA kernel-resident subsystem: 5 6 Updated all ACPICA copyrights and signons to 2016: Added the 2016 7 copyright to all source code module headers and utility/tool signons. 8 This includes the standard Linux dual-license header. This affects 9 virtually every file in the ACPICA core subsystem, iASL compiler, all 10 ACPICA utilities, and the ACPICA test suite. 11 12 Fixed a regression introduced in version 20151218 concerning the 13 execution of so-called module-level ASL/AML code. Namespace objects 14 created under a module-level If() construct were not properly/fully 15 entered into the namespace and could cause an interpreter fault when 16 accessed. 17 18 Example Code and Data Size: These are the sizes for the OS-independent 19 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 20 debug version of the code includes the debug output trace mechanism and 21 has a much larger code and data size. 22 23 Current Release: 24 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total 25 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total 26 Previous Release: 27 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total 28 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total 29 30 31 2) iASL Compiler/Disassembler and Tools: 32 33 Fixed a problem with the compilation of the GpioIo and GpioInt resource 34 descriptors. The _PIN field name was incorrectly defined to be an array 35 of 32-bit values, but the _PIN values are in fact 16 bits each. This 36 would cause incorrect bit width warnings when using Word (16-bit) fields 37 to access the descriptors. 38 39 40 ---------------------------------------- 41 18 December 2015. Summary of changes for version 20151218: 42 43 1) ACPICA kernel-resident subsystem: 44 45 Implemented per-AML-table execution of "module-level code" as individual 46 ACPI tables are loaded into the namespace during ACPICA initialization. 47 In other words, any module-level code within an AML table is executed 48 immediately after the table is loaded, instead of batched and executed 49 after all of the tables have been loaded. This provides compatibility 50 with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng, 51 David Box. 52 53 To fully support the feature above, the default operation region handlers 54 for the SystemMemory, SystemIO, and PCI_Config address spaces are now 55 installed before any ACPI tables are loaded. This enables module-level 56 code to access these address spaces during the table load and module- 57 level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David 58 Box. 59 60 Implemented several changes to the internal _REG support in conjunction 61 with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples 62 utilities for the changes above. Although these tools were changed, host 63 operating systems that simply use the default handlers for SystemMemory, 64 SystemIO, and PCI_Config spaces should not require any update. Lv Zheng. 65 66 For example, in the code below, DEV1 is conditionally added to the 67 namespace by the DSDT via module-level code that accesses an operation 68 region. The SSDT references DEV1 via the Scope operator. DEV1 must be 69 created immediately after the DSDT is loaded in order for the SSDT to 70 successfully reference DEV1. Previously, this code would cause an 71 AE_NOT_EXIST exception during the load of the SSDT. Now, this code is 72 fully supported by ACPICA. 73 74 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1) 75 { 76 OperationRegion (OPR1, SystemMemory, 0x400, 32) 77 Field (OPR1, AnyAcc, NoLock, Preserve) 78 { 79 FLD1, 1 80 } 81 If (FLD1) 82 { 83 Device (\DEV1) 84 { 85 } 86 } 87 } 88 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1) 89 { 90 External (\DEV1, DeviceObj) 91 Scope (\DEV1) 92 { 93 } 94 } 95 96 Fixed an AML interpreter problem where control method invocations were 97 not handled correctly when the invocation was itself a SuperName argument 98 to another ASL operator. In these cases, the method was not invoked. 99 ACPICA BZ 1002. Affects the following ASL operators that have a SuperName 100 argument: 101 Store 102 Acquire, Wait 103 CondRefOf, RefOf 104 Decrement, Increment 105 Load, Unload 106 Notify 107 Signal, Release, Reset 108 SizeOf 109 110 Implemented automatic String-to-ObjectReference conversion support for 111 packages returned by predefined names (such as _DEP). A common BIOS error 112 is to add double quotes around an ObjectReference namepath, which turns 113 the reference into an unexpected string object. This support detects the 114 problem and corrects it before the package is returned to the caller that 115 invoked the method. Lv Zheng. 116 117 Implemented extensions to the Concatenate operator. Concatenate now 118 accepts any type of object, it is not restricted to simply 119 Integer/String/Buffer. For objects other than these 3 basic data types, 120 the argument is treated as a string containing the name of the object 121 type. This expands the utility of Concatenate and the Printf/Fprintf 122 macros. ACPICA BZ 1222. 123 124 Cleaned up the output of the ASL Debug object. The timer() value is now 125 optional and no longer emitted by default. Also, the basic data types of 126 Integer/String/Buffer are simply emitted as their values, without a data 127 type string -- since the data type is obvious from the output. ACPICA BZ 128 1221. 129 130 Example Code and Data Size: These are the sizes for the OS-independent 131 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 132 debug version of the code includes the debug output trace mechanism and 133 has a much larger code and data size. 134 135 Current Release: 136 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total 137 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total 138 Previous Release: 139 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 140 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 141 142 143 2) iASL Compiler/Disassembler and Tools: 144 145 iASL: Fixed some issues with the ASL Include() operator. This operator 146 was incorrectly defined in the iASL parser rules, causing a new scope to 147 be opened for the code within the include file. This could lead to 148 several issues, including allowing ASL code that is technically illegal 149 and not supported by AML interpreters. Note, this does not affect the 150 related #include preprocessor operator. ACPICA BZ 1212. 151 152 iASL/Disassembler: Implemented support for the ASL ElseIf operator. This 153 operator is essentially an ASL macro since there is no AML opcode 154 associated with it. The code emitted by the iASL compiler for ElseIf is 155 an Else opcode followed immediately by an If opcode. The disassembler 156 will now emit an ElseIf if it finds an Else immediately followed by an 157 If. This simplifies the decoded ASL, especially for deeply nested 158 If..Else and large Switch constructs. Thus, the disassembled code more 159 closely follows the original source ASL. ACPICA BZ 1211. Example: 160 161 Old disassembly: 162 Else 163 { 164 If (Arg0 == 0x02) 165 { 166 Local0 = 0x05 167 } 168 } 169 170 New disassembly: 171 ElseIf (Arg0 == 0x02) 172 { 173 Local0 = 0x05 174 } 175 176 AcpiExec: Added support for the new module level code behavior and the 177 early region installation. This required a small change to the 178 initialization, since AcpiExec must install its own operation region 179 handlers. 180 181 AcpiExec: Added support to make the debug object timer optional. Default 182 is timer disabled. This cleans up the debug object output -- the timer 183 data is rarely used. 184 185 AcpiExec: Multiple ACPI tables are now loaded in the order that they 186 appear on the command line. This can be important when there are 187 interdependencies/references between the tables. 188 189 iASL/Templates. Add support to generate template files with multiple 190 SSDTs within a single output file. Also added ommand line support to 191 specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ 192 1223, 1225. 193 194 195 ---------------------------------------- 196 24 November 2015. Summary of changes for version 20151124: 197 198 1) ACPICA kernel-resident subsystem: 199 200 Fixed a possible regression for a previous update to FADT handling. The 201 FADT no longer has a fixed table ID, causing some issues with code that 202 was hardwired to a specific ID. Lv Zheng. 203 204 Fixed a problem where the method auto-serialization could interfere with 205 the current SyncLevel. This change makes the auto-serialization support 206 transparent to the SyncLevel support and management. 207 208 Removed support for the _SUB predefined name in AcpiGetObjectInfo. This 209 interface is intended for early access to the namespace during the 210 initial namespace device discovery walk. The _SUB method has been seen to 211 access operation regions in some cases, causing errors because the 212 operation regions are not fully initialized. 213 214 AML Debugger: Fixed some issues with the terminate/quit/exit commands 215 that can cause faults. Lv Zheng. 216 217 AML Debugger: Add thread ID support so that single-step mode only applies 218 to the AML Debugger thread. This prevents runtime errors within some 219 kernels. Lv Zheng. 220 221 Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx 222 methods that are invoked by this interface are optional, removed warnings 223 emitted for the case where one or more of these methods do not exist. 224 ACPICA BZ 1208, original change by Prarit Bhargava. 225 226 Made a major pass through the entire ACPICA source code base to 227 standardize formatting that has diverged a bit over time. There are no 228 functional changes, but this will of course cause quite a few code 229 differences from the previous ACPICA release. 230 231 Example Code and Data Size: These are the sizes for the OS-independent 232 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 233 debug version of the code includes the debug output trace mechanism and 234 has a much larger code and data size. 235 236 Current Release: 237 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 238 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 239 Previous Release: 240 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 241 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 242 243 244 2) iASL Compiler/Disassembler and Tools: 245 246 iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple 247 definition blocks within a single ASL file and the resulting AML file. 248 Support for this type of file was also added to the various tools that 249 use binary AML files: acpiexec, acpixtract, and the AML disassembler. The 250 example code below shows two definition blocks within the same file: 251 252 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template", 253 0x12345678) 254 { 255 } 256 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01) 257 { 258 } 259 260 iASL: Enhanced typechecking for the Name() operator. All expressions for 261 the value of the named object must be reduced/folded to a single constant 262 at compile time, as per the ACPI specification (the AML definition of 263 Name()). 264 265 iASL: Fixed some code indentation issues for the -ic and -ia options (C 266 and assembly headers). Now all emitted code correctly begins in column 1. 267 268 iASL: Added an error message for an attempt to open a Scope() on an 269 object defined in an SSDT. The DSDT is always loaded into the namespace 270 first, so any attempt to open a Scope on an SSDT object will fail at 271 runtime. 272 273 274 ---------------------------------------- 275 30 September 2015. Summary of changes for version 20150930: 276 277 1) ACPICA kernel-resident subsystem: 278 279 Debugger: Implemented several changes and bug fixes to assist support for 280 the in-kernel version of the AML debugger. Lv Zheng. 281 - Fix the "predefined" command for in-kernel debugger. 282 - Do not enter debug command loop for the help and version commands. 283 - Disallow "execute" command during execution/single-step of a method. 284 285 Interpreter: Updated runtime typechecking for all operators that have 286 target operands. The operand is resolved and validated that it is legal. 287 For example, the target cannot be a non-data object such as a Device, 288 Mutex, ThermalZone, etc., as per the ACPI specification. 289 290 Debugger: Fixed the double-mutex user I/O handshake to work when local 291 deadlock detection is enabled. 292 293 Debugger: limited display of method locals and arguments (LocalX and 294 ArgX) to only those that have actually been initialized. This prevents 295 lines of extraneous output. 296 297 Updated the definition of the NFIT table to correct the bit polarity of 298 one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED 299 300 Example Code and Data Size: These are the sizes for the OS-independent 301 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 302 debug version of the code includes the debug output trace mechanism and 303 has a much larger code and data size. 304 305 Current Release: 306 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 307 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 308 Previous Release: 309 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 310 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 311 312 313 2) iASL Compiler/Disassembler and Tools: 314 315 iASL: Improved the compile-time typechecking for operands of many of the 316 ASL operators: 317 318 -- Added an option to disable compiler operand/operator typechecking (- 319 ot). 320 321 -- For the following operators, the TermArg operands are now validated 322 when possible to be Integer data objects: BankField, OperationRegion, 323 DataTableRegion, Buffer, and Package. 324 325 -- Store (Source, Target): Both the source and target operands are 326 resolved and checked that the operands are both legal. For example, 327 neither operand can be a non-data object such as a Device, Mutex, 328 ThermalZone, etc. Note, as per the ACPI specification, the CopyObject 329 operator can be used to store an object to any type of target object. 330 331 -- Store (Source, Target): If the source is a Package object, the target 332 must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target 333 is a Package, the source must also be a Package. 334 335 -- Store (Source, Target): A warning is issued if the source and target 336 resolve to the identical named object. 337 338 -- Store (Source, <method invocation>): An error is generated for the 339 target method invocation, as this construct is not supported by the AML 340 interpreter. 341 342 -- For all ASL math and logic operators, the target operand must be a 343 data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This 344 includes the function return value also. 345 346 -- External declarations are also included in the typechecking where 347 possible. External objects defined using the UnknownObj keyword cannot be 348 typechecked, however. 349 350 iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index 351 operator: 352 - Legacy code: Index(PKG1, 3) 353 - New ASL+ code: PKG1[3] 354 This completes the ACPI 6.0 ASL+ support as it was the only operator not 355 supported. 356 357 iASL: Fixed the file suffix for the preprocessor output file (.i). Two 358 spaces were inadvertently appended to the filename, causing file access 359 and deletion problems on some systems. 360 361 ASL Test Suite (ASLTS): Updated the master makefile to generate all 362 possible compiler output files when building the test suite -- thus 363 exercising these features of the compiler. These files are automatically 364 deleted when the test suite exits. 365 366 367 ---------------------------------------- 368 18 August 2015. Summary of changes for version 20150818: 369 370 1) ACPICA kernel-resident subsystem: 371 372 Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv 373 Zheng. ACPICA BZ 1186. 374 375 Completed development to ensure that the ACPICA Disassembler and Debugger 376 are fully standalone components of ACPICA. Removed cross-component 377 dependences. Lv Zheng. 378 379 The max-number-of-AML-loops is now runtime configurable (previously was 380 compile-time only). This is essentially a loop timeout to force-abort 381 infinite AML loops. ACPCIA BZ 1192. 382 383 Debugger: Cleanup output to dump ACPI names and namepaths without any 384 trailing underscores. Lv Zheng. ACPICA BZ 1135. 385 386 Removed unnecessary conditional compilations across the Debugger and 387 Disassembler components where entire modules could be left uncompiled. 388 389 The aapits test is deprecated and has been removed from the ACPICA git 390 tree. The test has never been completed and has not been maintained, thus 391 becoming rather useless. ACPICA BZ 1015, 794. 392 393 A batch of small changes to close bugzilla and other reports: 394 - Remove duplicate code for _PLD processing. ACPICA BZ 1176. 395 - Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185. 396 - iASL: Support POSIX yacc again in makefile. Jung-uk Kim. 397 - ACPI table support: general cleanup and simplification. Lv Zheng, Bob 398 Moore. 399 - ACPI table support: fix for a buffer read overrun in AcpiTbFindTable. 400 ACPICA BZ 1184. 401 - Enhance parameter validation for DataTableRegion and LoadTable ASL/AML 402 operators. 403 - Debugger: Split debugger initialization/termination interfaces. Lv 404 Zheng. 405 - AcpiExec: Emit OemTableId for SSDTs during the load phase for table 406 identification. 407 - AcpiExec: Add debug message during _REG method phase during table 408 load/init. 409 - AcpiNames: Fix a regression where some output was missing and no longer 410 emitted. 411 - Debugger: General cleanup and simplification. Lv Zheng. 412 - Disassembler: Cleanup use of several global option variables. Lv Zheng. 413 414 Example Code and Data Size: These are the sizes for the OS-independent 415 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 416 debug version of the code includes the debug output trace mechanism and 417 has a much larger code and data size. 418 419 Current Release: 420 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 421 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 422 Previous Release: 423 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 424 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 425 426 427 2) iASL Compiler/Disassembler and Tools: 428 429 AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT 430 were not handled properly and caused load errors. Now, properly invoke 431 and use the ACPICA auto-reallocate mechanism for ACPI table data 432 structures. ACPICA BZ 1188 433 434 AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA 435 BZ 1190. 436 437 AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For 438 AcpiExec, this means that no control methods (like _REG/_INI/_STA) are 439 executed during initialization. ACPICA BZ 1187, 1189. 440 441 iASL/Disassembler: Implemented a prototype "listing" mode that emits AML 442 that corresponds to each disassembled ASL statement, to simplify 443 debugging. ACPICA BZ 1191. 444 445 Debugger: Add option to the "objects" command to display a summary of the 446 current namespace objects (Object type and count). This is displayed if 447 the command is entered with no arguments. 448 449 AcpiNames: Add -x option to specify debug level, similar to AcpiExec. 450 451 452 ---------------------------------------- 453 17 July 2015. Summary of changes for version 20150717: 454 455 1) ACPICA kernel-resident subsystem: 456 457 Improved the partitioning between the Debugger and Disassembler 458 components. This allows the Debugger to be used standalone within kernel 459 code without the Disassembler (which is used for single stepping also). 460 This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng. 461 462 Debugger: Implemented a new command to trace the execution of control 463 methods (Trace). This is especially useful for the in-kernel version of 464 the debugger when file I/O may not be available for method trace output. 465 See the ACPICA reference for more information. Lv Zheng. 466 467 Moved all C library prototypes (used for the local versions of these 468 functions when requested) to a new header, acclib.h 469 Cleaned up the use of non-ANSI C library functions. These functions are 470 implemented locally in ACPICA. Moved all such functions to a common 471 source file, utnonansi.c 472 473 Debugger: Fixed a problem with the "!!" command (get last command 474 executed) where the debugger could enter an infinite loop and eventually 475 crash. 476 477 Removed the use of local macros that were used for some of the standard C 478 library functions to automatically cast input parameters. This mostly 479 affected the is* functions where the input parameter is defined to be an 480 int. This required a few modifications to the main ACPICA source code to 481 provide casting for these functions and eliminate possible compiler 482 warnings for these parameters. 483 484 Across the source code, added additional status/error checking to resolve 485 issues discovered by static source code analysis tools such as Coverity. 486 487 Example Code and Data Size: These are the sizes for the OS-independent 488 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 489 debug version of the code includes the debug output trace mechanism and 490 has a much larger code and data size. 491 492 Current Release: 493 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 494 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 495 Previous Release: 496 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 497 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 498 499 500 2) iASL Compiler/Disassembler and Tools: 501 502 iASL: Fixed a regression where the device map file feature no longer 503 worked properly when used in conjunction with the disassembler. It only 504 worked properly with the compiler itself. 505 506 iASL: Implemented a new warning for method LocalX variables that are set 507 but never used (similar to a C compiler such as gcc). This also applies 508 to ArgX variables that are not defined by the parent method, and are 509 instead (legally) used as local variables. 510 511 iASL/Preprocessor: Finished the pass-through of line numbers from the 512 preprocessor to the compiler. This ensures that compiler errors/warnings 513 have the correct original line numbers and filenames, regardless of any 514 #include files. 515 516 iASL/Preprocessor: Fixed a couple of issues with comment handling and the 517 pass-through of comments to the preprocessor output file (which becomes 518 the compiler input file). Also fixed a problem with // comments that 519 appear after a math expression. 520 521 iASL: Added support for the TCPA server table to the table compiler and 522 template generator. (The client table was already previously supported) 523 524 iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to 525 identify the iASL compiler. 526 527 Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined 528 multiple times. The new names are ACPI_SIGN_NEGATIVE and 529 ACPI_SIGN_POSITIVE. 530 531 AcpiHelp: Update to expand help messages for the iASL preprocessor 532 directives. 533 534 535 ---------------------------------------- 536 19 June 2015. Summary of changes for version 20150619: 537 538 Two regressions in version 20150616 have been addressed: 539 540 Fixes some problems/issues with the C library macro removal (ACPI_STRLEN, 541 etc.) This update changes ACPICA to only use the standard headers for 542 functions, or the prototypes for the local versions of the C library 543 functions. Across the source code, this required some additional casts 544 for some Clib invocations for portability. Moved all local prototypes to 545 a new file, acclib.h 546 547 Fixes several problems with recent changes to the handling of the FACS 548 table that could cause some systems not to boot. 549 550 551 ---------------------------------------- 552 16 June 2015. Summary of changes for version 20150616: 553 554 555 1) ACPICA kernel-resident subsystem: 556 557 Across the entire ACPICA source code base, the various macros for the C 558 library functions (such as ACPI_STRLEN, etc.) have been removed and 559 replaced by the standard C library names (strlen, etc.) The original 560 purpose for these macros is no longer applicable. This simplification 561 reduces the number of macros used in the ACPICA source code 562 significantly, improving readability and maintainability. 563 564 Implemented support for a new ACPI table, the OSDT. This table, the 565 "override" SDT, can be loaded directly by the host OS at boot time. It 566 enables the replacement of existing namespace objects that were installed 567 via the DSDT and/or SSDTs. The primary purpose for this is to replace 568 buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated 569 for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob 570 Moore. 571 572 Added support for systems with (improperly) two FACS tables -- a "32-bit" 573 table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit 574 X field). This change will support both automatically. There continues to 575 be systems found with this issue. This support requires a change to the 576 AcpiSetFirmwareWakingVector interface. Also, a public global variable has 577 been added to allow the host to select which FACS is desired 578 (AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more 579 details Lv Zheng. 580 581 Added a new feature to allow for systems that do not contain an FACS. 582 Although this is already supported on hardware-reduced platforms, the 583 feature has been extended for all platforms. The reasoning is that we do 584 not want to abort the entire ACPICA initialization just because the 585 system is seriously buggy and has no FACS. 586 587 Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were 588 not correctly transcribed from the ACPI specification in ACPICA version 589 20150515. 590 591 Implemented support for the _CLS object in the AcpiGetObjectInfo external 592 interface. 593 594 Updated the definitions of the TCPA and TPM2 ACPI tables to the more 595 recent TCG ACPI Specification, December 14, 2014. Table disassembler and 596 compiler also updated. Note: The TCPA "server" table is not supported by 597 the disassembler/table-compiler at this time. 598 599 ACPI 6.0: Added definitions for the new GIC version field in the MADT. 600 601 Example Code and Data Size: These are the sizes for the OS-independent 602 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 603 debug version of the code includes the debug output trace mechanism and 604 has a much larger code and data size. 605 606 Current Release: 607 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 608 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 609 Previous Release: 610 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 611 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 612 613 614 2) iASL Compiler/Disassembler and Tools: 615 616 Disassembler: Fixed a problem with the new symbolic operator disassembler 617 where incorrect ASL code could be emitted in some cases for the "non- 618 commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and 619 ShiftRight. The actual problem cases seem to be rather unusual in common 620 ASL code, however. David Box. 621 622 Modified the linux version of acpidump to obtain ACPI tables from not 623 just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv 624 Zheng. 625 626 iASL: Fixed a problem where the user preprocessor output file (.i) 627 contained extra data that was not expected. The compiler was using this 628 file as a temporary file and passed through #line directives in order to 629 keep compiler error messages in sync with the input file and line number 630 across multiple include files. The (.i) is no longer a temporary file as 631 the compiler uses a new, different file for the original purpose. 632 633 iASL: Fixed a problem where comments within the original ASL source code 634 file were not passed through to the preprocessor output file, nor any 635 listing files. 636 637 iASL: Fixed some issues for the handling of the "#include" preprocessor 638 directive and the similar (but not the same) "Include" ASL operator. 639 640 iASL: Add support for the new OSDT in both the disassembler and compiler. 641 642 iASL: Fixed a problem with the constant folding support where a Buffer 643 object could be incorrectly generated (incorrectly formed) during a 644 conversion to a Store() operator. 645 646 AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new 647 description text for the _REV predefined name. _REV now permanently 648 returns 2, as per the ACPI 6.0 specification. 649 650 Debugger: Enhanced the output of the Debug ASL object for references 651 produced by the Index operator. For Buffers and strings, only output the 652 actual byte pointed to by the index. For packages, only print the single 653 package element decoded by the index. Previously, the entire 654 buffer/string/package was emitted. 655 656 iASL/Table-compiler: Fixed a regression where the "generic" data types 657 were no longer recognized, causing errors. 658 659 660 ---------------------------------------- 661 15 May 2015. Summary of changes for version 20150515: 662 663 This release implements most of ACPI 6.0 as described below. 664 665 1) ACPICA kernel-resident subsystem: 666 667 Implemented runtime argument checking and return value checking for all 668 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI, 669 _MTL, _PRR, _RDI, _RST, _TFP, _TSN. 670 671 Example Code and Data Size: These are the sizes for the OS-independent 672 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 673 debug version of the code includes the debug output trace mechanism and 674 has a much larger code and data size. 675 676 Current Release: 677 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 678 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 679 Previous Release: 680 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 681 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 682 683 684 2) iASL Compiler/Disassembler and Tools: 685 686 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined 687 names (argument count validation and return value typechecking.) 688 689 iASL disassembler and table compiler: implemented support for all new 690 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV. 691 692 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing 693 tables: FADT, MADT. 694 695 iASL preprocessor: Added a new directive to enable inclusion of binary 696 blobs into ASL code. The new directive is #includebuffer. It takes a 697 binary file as input and emits a named ascii buffer object into the ASL 698 code. 699 700 AcpiHelp: Added support for all new ACPI 6.0 predefined names. 701 702 AcpiHelp: Added a new option, -d, to display all iASL preprocessor 703 directives. 704 705 AcpiHelp: Added a new option, -t, to display all known/supported ACPI 706 tables. 707 708 709 ---------------------------------------- 710 10 April 2015. Summary of changes for version 20150410: 711 712 Reverted a change introduced in version 20150408 that caused 713 a regression in the disassembler where incorrect operator 714 symbols could be emitted. 715 716 717 ---------------------------------------- 718 08 April 2015. Summary of changes for version 20150408: 719 720 721 1) ACPICA kernel-resident subsystem: 722 723 Permanently set the return value for the _REV predefined name. It now 724 returns 2 (was 5). This matches other ACPI implementations. _REV will be 725 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2 726 for ACPI 2.0 and later. It should never be used to differentiate or 727 identify operating systems. 728 729 Added the "Windows 2015" string to the _OSI support. ACPICA will now 730 return TRUE to a query with this string. 731 732 Fixed several issues with the local version of the printf function. 733 734 Added the C99 compiler option (-std=c99) to the Unix makefiles. 735 736 Current Release: 737 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total 738 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total 739 Previous Release: 740 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 741 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 742 743 744 2) iASL Compiler/Disassembler and Tools: 745 746 iASL: Implemented an enhancement to the constant folding feature to 747 transform the parse tree to a simple Store operation whenever possible: 748 Add (2, 3, X) ==> is converted to: Store (5, X) 749 X = 2 + 3 ==> is converted to: Store (5, X) 750 751 Updated support for the SLIC table (Software Licensing Description Table) 752 in both the Data Table compiler and the disassembler. The SLIC table 753 support now conforms to "Microsoft Software Licensing Tables (SLIC and 754 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data 755 following the ACPI header is now defined to be "Proprietary Data", and as 756 such, can only be entered or displayed as a hex data block. 757 758 Implemented full support for the MSDM table as described in the document 759 above. Note: The format of MSDM is similar to SLIC. Any MSDM data 760 following the ACPI header is defined to be "Proprietary Data", and can 761 only be entered or displayed as a hex data block. 762 763 Implemented the -Pn option for the iASL Table Compiler (was only 764 implemented for the ASL compiler). This option disables the iASL 765 preprocessor. 766 767 Disassembler: For disassembly of Data Tables, added a comment field 768 around the Ascii equivalent data that is emitted as part of the "Raw 769 Table Data" block. This prevents the iASL Preprocessor from possible 770 confusion if/when the table is compiled. 771 772 Disassembler: Added an option (-df) to force the disassembler to assume 773 that the table being disassembled contains valid AML. This feature is 774 useful for disassembling AML files that contain ACPI signatures other 775 than DSDT or SSDT (such as OEMx or other signatures). 776 777 Changes for the EFI version of the tools: 778 1) Fixed a build error/issue 779 2) Fixed a cast warning 780 781 iASL: Fixed a path issue with the __FILE__ operator by making the 782 directory prefix optional within the internal SplitInputFilename 783 function. 784 785 Debugger: Removed some unused global variables. 786 787 Tests: Updated the makefile for proper generation of the AAPITS suite. 788 789 790 ---------------------------------------- 791 04 February 2015. Summary of changes for version 20150204: 792 793 ACPICA kernel-resident subsystem: 794 795 Updated all ACPICA copyrights and signons to 2014. Added the 2014 796 copyright to all module headers and signons, including the standard Linux 797 header. This affects virtually every file in the ACPICA core subsystem, 798 iASL compiler, all ACPICA utilities, and the test suites. 799 800 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues. 801 A raw gpe handling mechanism was created to allow better handling of GPE 802 storms that aren't easily managed by the normal handler. The raw handler 803 allows disabling/renabling of the the GPE so that interrupt storms can be 804 avoided in cases where events cannot be timely serviced. In this 805 scenario, handlers should use the AcpiSetGpe() API to disable/enable the 806 GPE. This API will leave the reference counts undisturbed, thereby 807 preventing unintentional clearing of the GPE when the intent in only to 808 temporarily disable it. Raw handlers allow enabling and disabling of a 809 GPE by removing GPE register locking. As such, raw handlers much provide 810 their own locks while using GPE API's to protect access to GPE data 811 structures. 812 Lv Zheng 813 814 Events: Always modify GPE registers under the GPE lock. 815 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register 816 values. Reported as bug by joe.liu (a] apple.com. 817 818 Unix makefiles: Separate option to disable optimizations and 819 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the 820 NOOPT disable option and creates a separate flag (NOFORTIFY) for this 821 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined 822 errors when building ACPICA. This allows disabling the option without 823 also having to disable optimazations. 824 David Box 825 826 Current Release: 827 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 828 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total 829 830 -- 831 -------------------------------------- 832 07 November 2014. Summary of changes for version 20141107: 833 834 This release is available at https://acpica.org/downloads 835 836 This release introduces and implements language extensions to ASL that 837 provide support for symbolic ("C-style") operators and expressions. These 838 language extensions are known collectively as ASL+. 839 840 841 1) iASL Compiler/Disassembler and Tools: 842 843 Disassembler: Fixed a problem with disassembly of the UartSerialBus 844 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E. 845 Box. 846 847 Disassembler: Fixed the Unicode macro support to add escape sequences. 848 All non-printable ASCII values are emitted as escape sequences, as well 849 as the standard escapes for quote and backslash. Ensures that the 850 disassembled macro can be correctly recompiled. 851 852 iASL: Added Printf/Fprintf macros for formatted output. These macros are 853 translated to existing AML Concatenate and Store operations. Printf 854 writes to the ASL Debug object. Fprintf allows the specification of an 855 ASL name as the target. Only a single format specifier is required, %o, 856 since the AML interpreter dynamically converts objects to the required 857 type. David E. Box. 858 859 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 860 (Concatenate (Concatenate (Concatenate ("", Arg0), 861 ": Unexpected value for "), Arg1), ", "), Arg2), 862 " at line "), Arg3), Debug) 863 864 (new) Printf ("%o: Unexpected value for %o, %o at line %o", 865 Arg0, Arg1, Arg2, Arg3) 866 867 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 868 ("", Arg1), ": "), Arg0), " Successful"), STR1) 869 870 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0) 871 872 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the 873 ASL parse tree before the AML code is generated. This allows blocks of 874 ASL code to be removed in order to help locate and identify problem 875 devices and/or code. David E. Box. 876 877 AcpiExec: Added support (-fi) for an optional namespace object 878 initialization file. This file specifies initial values for namespace 879 objects as necessary for debugging and testing different ASL code paths 880 that may be taken as a result of BIOS options. 881 882 883 2) Overview of symbolic operator support for ASL (ASL+) 884 ------------------------------------------------------- 885 886 As an extension to the ASL language, iASL implements support for symbolic 887 (C-style) operators for math and logical expressions. This can greatly 888 simplify ASL code as well as improve both readability and 889 maintainability. These language extensions can exist concurrently with 890 all legacy ASL code and expressions. 891 892 The symbolic extensions are 100% compatible with existing AML 893 interpreters, since no new AML opcodes are created. To implement the 894 extensions, the iASL compiler transforms the symbolic expressions into 895 the legacy ASL/AML equivalents at compile time. 896 897 Full symbolic expressions are supported, along with the standard C 898 precedence and associativity rules. 899 900 Full disassembler support for the symbolic expressions is provided, and 901 creates an automatic migration path for existing ASL code to ASL+ code 902 via the disassembly process. By default, the disassembler now emits ASL+ 903 code with symbolic expressions. An option (-dl) is provided to force the 904 disassembler to emit legacy ASL code if desired. 905 906 Below is the complete list of the currently supported symbolic operators 907 with examples. See the iASL User Guide for additional information. 908 909 910 ASL+ Syntax Legacy ASL Equivalent 911 ----------- --------------------- 912 913 // Math operators 914 915 Z = X + Y Add (X, Y, Z) 916 Z = X - Y Subtract (X, Y, Z) 917 Z = X * Y Multiply (X, Y, Z) 918 Z = X / Y Divide (X, Y, , Z) 919 Z = X % Y Mod (X, Y, Z) 920 Z = X << Y ShiftLeft (X, Y, Z) 921 Z = X >> Y ShiftRight (X, Y, Z) 922 Z = X & Y And (X, Y, Z) 923 Z = X | Y Or (X, Y, Z) 924 Z = X ^ Y Xor (X, Y, Z) 925 Z = ~X Not (X, Z) 926 X++ Increment (X) 927 X-- Decrement (X) 928 929 // Logical operators 930 931 (X == Y) LEqual (X, Y) 932 (X != Y) LNotEqual (X, Y) 933 (X < Y) LLess (X, Y) 934 (X > Y) LGreater (X, Y) 935 (X <= Y) LLessEqual (X, Y) 936 (X >= Y) LGreaterEqual (X, Y) 937 (X && Y) LAnd (X, Y) 938 (X || Y) LOr (X, Y) 939 (!X) LNot (X) 940 941 // Assignment and compound assignment operations 942 943 X = Y Store (Y, X) 944 X += Y Add (X, Y, X) 945 X -= Y Subtract (X, Y, X) 946 X *= Y Multiply (X, Y, X) 947 X /= Y Divide (X, Y, , X) 948 X %= Y Mod (X, Y, X) 949 X <<= Y ShiftLeft (X, Y, X) 950 X >>= Y ShiftRight (X, Y, X) 951 X &= Y And (X, Y, X) 952 X |= Y Or (X, Y, X) 953 X ^= Y Xor (X, Y, X) 954 955 956 3) ASL+ Examples: 957 ----------------- 958 959 Legacy ASL: 960 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual ( 961 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530, 962 0x03FB), 963 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0)))) 964 { 965 And (MEMB, 0xFFFFFFF0, SRMB) 966 Store (MEMB, Local2) 967 Store (PDBM, Local1) 968 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM) 969 Store (SRMB, MEMB) 970 Or (PDBM, 0x02, PDBM) 971 } 972 973 ASL+ version: 974 If (((R510 & 0x03FB) == 0x02E0) || 975 ((R520 & 0x03FB) == 0x02E0) || 976 ((R530 & 0x03FB) == 0x02E0) || 977 ((R540 & 0x03FB) == 0x02E0)) 978 { 979 SRMB = (MEMB & 0xFFFFFFF0) 980 Local2 = MEMB 981 Local1 = PDBM 982 PDBM &= 0xFFFFFFFFFFFFFFF9 983 MEMB = SRMB 984 PDBM |= 0x02 985 } 986 987 Legacy ASL: 988 Store (0x1234, Local1) 989 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3) 990 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3) 991 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3) 992 Store (Index (PKG1, 0x03), Local6) 993 Store (Add (Local3, Local2), Debug) 994 Add (Local1, 0x0F, Local2) 995 Add (Local1, Multiply (Local2, Local3), Local2) 996 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3) 997 998 ASL+ version: 999 Local1 = 0x1234 1000 Local3 = (((Local1 + TEST) + 0x20) * Local2) 1001 Local3 = (Local2 * ((Local1 + TEST) + 0x20)) 1002 Local3 = (Local1 + (TEST + (0x20 * Local2))) 1003 Local6 = Index (PKG1, 0x03) 1004 Debug = (Local3 + Local2) 1005 Local2 = (Local1 + 0x0F) 1006 Local2 = (Local1 + (Local2 * Local3)) 1007 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1)) 1008 1009 1010 ---------------------------------------- 1011 26 September 2014. Summary of changes for version 20140926: 1012 1013 1) ACPICA kernel-resident subsystem: 1014 1015 Updated the GPIO operation region handler interface (GeneralPurposeIo). 1016 In order to support GPIO Connection objects with multiple pins, along 1017 with the related Field objects, the following changes to the interface 1018 have been made: The Address is now defined to be the offset in bits of 1019 the field unit from the previous invocation of a Connection. It can be 1020 viewed as a "Pin Number Index" into the connection resource descriptor. 1021 The BitWidth is the exact bit width of the field. It is usually one bit, 1022 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for 1023 additional information and examples. 1024 1025 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with 1026 corresponding _Lxx/_Exx methods are disabled (they may have been enabled 1027 by the firmware), so that they cannot fire until they are enabled via 1028 AcpiUpdateAllGpes. Rafael J. Wysocki. 1029 1030 Added a new return flag for the Event/GPE status interfaces -- 1031 AcpiGetEventStatus and AcpiGetGpeStatus. The new 1032 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or 1033 GPE currently has a handler associated with it, and can thus actually 1034 affect the system. Lv Zheng. 1035 1036 Example Code and Data Size: These are the sizes for the OS-independent 1037 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1038 debug version of the code includes the debug output trace mechanism and 1039 has a much larger code and data size. 1040 1041 Current Release: 1042 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 1043 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 1044 Previous Release: 1045 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 1046 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 1047 1048 2) iASL Compiler/Disassembler and Tools: 1049 1050 iASL: Fixed a memory allocation/free regression introduced in 20140828 1051 that could cause the compiler to crash. This was introduced inadvertently 1052 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111, 1053 1113. 1054 1055 iASL: Removed two error messages that have been found to create false 1056 positives, until they can be fixed and fully validated (ACPICA BZ 1112): 1057 1) Illegal forward reference within a method 1058 2) Illegal reference across two methods 1059 1060 iASL: Implemented a new option (-lm) to create a hardware mapping file 1061 that summarizes all GPIO, I2C, SPI, and UART connections. This option 1062 works for both the compiler and disassembler. See the iASL compiler user 1063 guide for additional information and examples (section 6.4.6). 1064 1065 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to 1066 version 2. This corrects the AE_BAD_HEADER exception seen on systems with 1067 a version 1 RSDP. Lv Zheng ACPICA BZ 1097. 1068 1069 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode 1070 unless STDIN is actually a terminal. Assists with batch-mode processing. 1071 ACPICA BZ 1114. 1072 1073 Disassembler/AcpiHelp: Added another large group of recognized _HID 1074 values. 1075 1076 1077 ---------------------------------------- 1078 28 August 2014. Summary of changes for version 20140828: 1079 1080 1) ACPICA kernel-resident subsystem: 1081 1082 Fixed a problem related to the internal use of the Timer() operator where 1083 a 64-bit divide could cause an attempted link to a double-precision math 1084 library. This divide is not actually necessary, so the code was 1085 restructured to eliminate it. Lv Zheng. 1086 1087 ACPI 5.1: Added support for the runtime validation of the _DSD package 1088 (similar to the iASL support). 1089 1090 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the 1091 SRAT table. Hanjun Guo <hanjun.guo (a] linaro.org>. 1092 1093 Example Code and Data Size: These are the sizes for the OS-independent 1094 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1095 debug version of the code includes the debug output trace mechanism and 1096 has a much larger code and data size. 1097 1098 Current Release: 1099 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 1100 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 1101 Previous Release: 1102 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1 1103 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 1104 1105 2) iASL Compiler/Disassembler and Tools: 1106 1107 AcpiExec: Fixed a problem on unix systems where the original terminal 1108 state was not always properly restored upon exit. Seen when using the -v 1109 option. ACPICA BZ 1104. 1110 1111 iASL: Fixed a problem with the validation of the ranges/length within the 1112 Memory24 resource descriptor. There was a boundary condition when the 1113 range was equal to the (length -1) caused by the fact that these values 1114 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098 1115 1116 Disassembler: Fixed a problem with the GpioInt descriptor interrupt 1117 polarity 1118 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword 1119 is 1120 now supported properly. 1121 1122 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported 1123 in the disassembler, data table compiler, and table template generator. 1124 1125 iASL: Added a requirement for Device() objects that one of either a _HID 1126 or _ADR must exist within the scope of a Device, as per the ACPI 1127 specification. Remove a similar requirement that was incorrectly in place 1128 for the _DSD object. 1129 1130 iASL: Added error detection for illegal named references within control 1131 methods that would cause runtime failures. Now trapped as errors are: 1) 1132 References to objects within a non-parent control method. 2) Forward 1133 references (within a method) -- for control methods, AML interpreters use 1134 a one-pass parse of control methods. ACPICA BZ 1008. 1135 1136 iASL: Added error checking for dependencies related to the _PSx power 1137 methods. ACPICA BZ 1029. 1138 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2, 1139 _PS3. 1140 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same 1141 scope. 1142 1143 iASL and table compiler: Cleanup miscellaneous memory leaks by fully 1144 deploying the existing object and string caches and adding new caches for 1145 the table compiler. 1146 1147 iASL: Split the huge parser source file into multiple subfiles to improve 1148 manageability. Generation now requires the M4 macro preprocessor, which 1149 is part of the Bison distribution on both unix and windows platforms. 1150 1151 AcpiSrc: Fixed and removed all extraneous warnings generated during 1152 entire ACPICA source code scan and/or conversion. 1153 1154 1155 ---------------------------------------- 1156 1157 24 July 2014. Summary of changes for version 20140724: 1158 1159 The ACPI 5.1 specification has been released and is available at: 1160 http://uefi.org/specs/access 1161 1162 1163 0) ACPI 5.1 support in ACPICA: 1164 1165 ACPI 5.1 is fully supported in ACPICA as of this release. 1166 1167 New predefined names. Support includes iASL and runtime ACPICA 1168 validation. 1169 _CCA (Cache Coherency Attribute). 1170 _DSD (Device-Specific Data). David Box. 1171 1172 Modifications to existing ACPI tables. Support includes headers, iASL 1173 Data Table compiler, disassembler, and the template generator. 1174 FADT - New fields and flags. Graeme Gregory. 1175 GTDT - One new subtable and new fields. Tomasz Nowicki. 1176 MADT - Two new subtables. Tomasz Nowicki. 1177 PCCT - One new subtable. 1178 1179 Miscellaneous. 1180 New notification type for System Resource Affinity change events. 1181 1182 1183 1) ACPICA kernel-resident subsystem: 1184 1185 Fixed a regression introduced in 20140627 where a fault can happen during 1186 the deletion of Alias AML namespace objects. The problem affected both 1187 the core ACPICA and the ACPICA tools including iASL and AcpiExec. 1188 1189 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a 1190 simple mechanism to enable wake GPEs that have no associated handler or 1191 control method. Rafael Wysocki. 1192 1193 Updated the AcpiEnableGpe interface to disallow the enable if there is no 1194 handler or control method associated with the particular GPE. This will 1195 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki. 1196 1197 Updated GPE handling and dispatch by disabling the GPE before clearing 1198 the status bit for edge-triggered GPEs. Lv Zheng. 1199 1200 Added Timer() support to the AML Debug object. The current timer value is 1201 now displayed with each invocation of (Store to) the debug object to 1202 enable simple generation of execution times for AML code (method 1203 execution for example.) ACPICA BZ 1093. 1204 1205 Example Code and Data Size: These are the sizes for the OS-independent 1206 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1207 debug version of the code includes the debug output trace mechanism and 1208 has a much larger code and data size. 1209 1210 Current Release: 1211 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total 1212 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 1213 Previous Release: 1214 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 1215 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 1216 1217 1218 2) iASL Compiler/Disassembler and Tools: 1219 1220 Fixed an issue with the recently added local printf implementation, 1221 concerning width/precision specifiers that could cause incorrect output. 1222 Lv Zheng. ACPICA BZ 1094. 1223 1224 Disassembler: Added support to detect buffers that contain UUIDs and 1225 disassemble them to an invocation of the ToUUID operator. Also emit 1226 commented descriptions of known ACPI-related UUIDs. 1227 1228 AcpiHelp: Added support to display known ACPI-related UUIDs. New option, 1229 -u. Adds three new files. 1230 1231 iASL: Update table compiler and disassembler for DMAR table changes that 1232 were introduced in September 2013. With assistance by David Woodhouse. 1233 1234 ---------------------------------------- 1235 27 June 2014. Summary of changes for version 20140627: 1236 1237 1) ACPICA kernel-resident subsystem: 1238 1239 Formatted Output: Implemented local versions of standard formatted output 1240 utilities such as printf, etc. Over time, it has been discovered that 1241 there are in fact many portability issues with printf, and the addition 1242 of this feature will fix/prevent these issues once and for all. Some 1243 known issues are summarized below: 1244 1245 1) Output of 64-bit values is not portable. For example, UINT64 is %ull 1246 for the Linux kernel and is %uI64 for some MSVC versions. 1247 2) Invoking printf consistently in a manner that is portable across both 1248 32-bit and 64-bit platforms is difficult at best in many situations. 1249 3) The output format for pointers varies from system to system (leading 1250 zeros especially), and leads to inconsistent output from ACPICA across 1251 platforms. 1252 4) Certain platform-specific printf formats may conflict with ACPICA use. 1253 5) If there is no local C library available, ACPICA now has local support 1254 for printf. 1255 1256 -- To address these printf issues in a complete manner, ACPICA now 1257 directly implements a small subset of printf format specifiers, only 1258 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng. 1259 1260 Implemented support for ACPICA generation within the EFI environment. 1261 Initially, the AcpiDump utility is supported in the UEFI shell 1262 environment. Lv Zheng. 1263 1264 Added a new external interface, AcpiLogError, to improve ACPICA 1265 portability. This allows the host to redirect error messages from the 1266 ACPICA utilities. Lv Zheng. 1267 1268 Added and deployed new OSL file I/O interfaces to improve ACPICA 1269 portability: 1270 AcpiOsOpenFile 1271 AcpiOsCloseFile 1272 AcpiOsReadFile 1273 AcpiOsWriteFile 1274 AcpiOsGetFileOffset 1275 AcpiOsSetFileOffset 1276 There are C library implementations of these functions in the new file 1277 service_layers/oslibcfs.c -- however, the functions can be implemented by 1278 the local host in any way necessary. Lv Zheng. 1279 1280 Implemented a mechanism to disable/enable ACPI table checksum validation 1281 at runtime. This can be useful when loading tables very early during OS 1282 initialization when it may not be possible to map the entire table in 1283 order to compute the checksum. Lv Zheng. 1284 1285 Fixed a buffer allocation issue for the Generic Serial Bus support. 1286 Originally, a fixed buffer length was used. This change allows for 1287 variable-length buffers based upon the protocol indicated by the field 1288 access attributes. Reported by Lan Tianyu. Lv Zheng. 1289 1290 Fixed a problem where an object detached from a namespace node was not 1291 properly terminated/cleared and could cause a circular list problem if 1292 reattached. ACPICA BZ 1063. David Box. 1293 1294 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick. 1295 1296 Fixed a possible memory leak in an error return path within the function 1297 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King. 1298 1299 Example Code and Data Size: These are the sizes for the OS-independent 1300 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1301 debug version of the code includes the debug output trace mechanism and 1302 has a much larger code and data size. 1303 1304 Current Release: 1305 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 1306 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 1307 Previous Release: 1308 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 1309 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 1310 1311 1312 2) iASL Compiler/Disassembler and Tools: 1313 1314 Disassembler: Add dump of ASCII equivalent text within a comment at the 1315 end of each line of the output for the Buffer() ASL operator. 1316 1317 AcpiDump: Miscellaneous changes: 1318 Fixed repetitive table dump in -n mode. 1319 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if 1320 the ACPI 2.0 GUID fails. 1321 1322 iASL: Fixed a problem where the compiler could fault if incorrectly given 1323 an acpidump output file as input. ACPICA BZ 1088. David Box. 1324 1325 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if 1326 they are invoked without any arguments. 1327 1328 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ 1329 1086. Colin Ian King. 1330 1331 Disassembler: Cleaned up a block of code that extracts a parent Op 1332 object. Added a comment that explains that the parent is guaranteed to be 1333 valid in this case. ACPICA BZ 1069. 1334 1335 1336 ---------------------------------------- 1337 24 April 2014. Summary of changes for version 20140424: 1338 1339 1) ACPICA kernel-resident subsystem: 1340 1341 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT. 1342 Some of these tables are known to contain a trailing NULL entry. Lv 1343 Zheng. 1344 1345 Removed an extraneous error message for the case where there are a large 1346 number of system GPEs (> 124). This was the "32-bit FADT register is too 1347 long to convert to GAS struct" message, which is irrelevant for GPEs 1348 since the GPEx_BLK_LEN fields of the FADT are always used instead of the 1349 (limited capacity) GAS bit length. Also, several changes to ensure proper 1350 support for GPE numbers > 255, where some "GPE number" fields were 8-bits 1351 internally. 1352 1353 Implemented and deployed additional configuration support for the public 1354 ACPICA external interfaces. Entire classes of interfaces can now be 1355 easily modified or configured out, replaced by stubbed inline functions 1356 by default. Lv Zheng. 1357 1358 Moved all public ACPICA runtime configuration globals to the public 1359 ACPICA external interface file for convenience. Also, removed some 1360 obsolete/unused globals. See the file acpixf.h. Lv Zheng. 1361 1362 Documentation: Added a new section to the ACPICA reference describing the 1363 maximum number of GPEs that can be supported by the FADT-defined GPEs in 1364 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA 1365 reference. 1366 1367 Example Code and Data Size: These are the sizes for the OS-independent 1368 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1369 debug version of the code includes the debug output trace mechanism and 1370 has a much larger code and data size. 1371 1372 Current Release: 1373 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 1374 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 1375 Previous Release: 1376 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 1377 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 1378 1379 1380 2) iASL Compiler/Disassembler and Tools: 1381 1382 iASL and disassembler: Add full support for the LPIT table (Low Power 1383 Idle Table). Includes support in the disassembler, data table compiler, 1384 and template generator. 1385 1386 AcpiDump utility: 1387 1) Add option to force the use of the RSDT (over the XSDT). 1388 2) Improve validation of the RSDP signature (use 8 chars instead of 4). 1389 1390 iASL: Add check for predefined packages that are too large. For 1391 predefined names that contain subpackages, check if each subpackage is 1392 too large. (Check for too small already exists.) 1393 1394 Debugger: Updated the GPE command (which simulates a GPE by executing the 1395 GPE code paths in ACPICA). The GPE device is now optional, and defaults 1396 to the GPE 0/1 FADT-defined blocks. 1397 1398 Unix application OSL: Update line-editing support. Add additional error 1399 checking and take care not to reset terminal attributes on exit if they 1400 were never set. This should help guarantee that the terminal is always 1401 left in the previous state on program exit. 1402 1403 1404 ---------------------------------------- 1405 25 March 2014. Summary of changes for version 20140325: 1406 1407 1) ACPICA kernel-resident subsystem: 1408 1409 Updated the auto-serialize feature for control methods. This feature 1410 automatically serializes all methods that create named objects in order 1411 to prevent runtime errors. The update adds support to ignore the 1412 currently executing AML SyncLevel when invoking such a method, in order 1413 to prevent disruption of any existing SyncLevel priorities that may exist 1414 in the AML code. Although the use of SyncLevels is relatively rare, this 1415 change fixes a regression where an AE_AML_MUTEX_ORDER exception can 1416 appear on some machines starting with the 20140214 release. 1417 1418 Added a new external interface to allow the host to install ACPI tables 1419 very early, before the namespace is even created. AcpiInstallTable gives 1420 the host additional flexibility for ACPI table management. Tables can be 1421 installed directly by the host as if they had originally appeared in the 1422 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables 1423 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along 1424 with additional internal restructuring and cleanup. See the ACPICA 1425 Reference for interface details. Lv Zheng. 1426 1427 Added validation of the checksum for all incoming dynamically loaded 1428 tables (via external interfaces or via AML Load/LoadTable operators). Lv 1429 Zheng. 1430 1431 Updated the use of the AcpiOsWaitEventsComplete interface during Notify 1432 and GPE handler removal. Restructured calls to eliminate possible race 1433 conditions. Lv Zheng. 1434 1435 Added a warning for the use/execution of the ASL/AML Unload (table) 1436 operator. This will help detect and identify machines that use this 1437 operator if and when it is ever used. This operator has never been seen 1438 in the field and the usage model and possible side-effects of the drastic 1439 runtime action of a full table removal are unknown. 1440 1441 Reverted the use of #pragma push/pop which was introduced in the 20140214 1442 release. It appears that push and pop are not implemented by enough 1443 compilers to make the use of this feature feasible for ACPICA at this 1444 time. However, these operators may be deployed in a future ACPICA 1445 release. 1446 1447 Added the missing EXPORT_SYMBOL macros for the install and remove SCI 1448 handler interfaces. 1449 1450 Source code generation: 1451 1) Disabled the use of the "strchr" macro for the gcc-specific 1452 generation. For some versions of gcc, this macro can periodically expose 1453 a compiler bug which in turn causes compile-time error(s). 1454 2) Added support for PPC64 compilation. Colin Ian King. 1455 1456 Example Code and Data Size: These are the sizes for the OS-independent 1457 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1458 debug version of the code includes the debug output trace mechanism and 1459 has a much larger code and data size. 1460 1461 Current Release: 1462 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 1463 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 1464 Previous Release: 1465 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 1466 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 1467 1468 1469 2) iASL Compiler/Disassembler and Tools: 1470 1471 Disassembler: Added several new features to improve the readability of 1472 the resulting ASL code. Extra information is emitted within comment 1473 fields in the ASL code: 1474 1) Known _HID/_CID values are decoded to descriptive text. 1475 2) Standard values for the Notify() operator are decoded to descriptive 1476 text. 1477 3) Target operands are expanded to full pathnames (in a comment) when 1478 possible. 1479 1480 Disassembler: Miscellaneous updates for extern() handling: 1481 1) Abort compiler if file specified by -fe option does not exist. 1482 2) Silence unnecessary warnings about argument count mismatches. 1483 3) Update warning messages concerning unresolved method externals. 1484 4) Emit "UnknownObj" keyword for externals whose type cannot be 1485 determined. 1486 1487 AcpiHelp utility: 1488 1) Added the -a option to display both the ASL syntax and the AML 1489 encoding for an input ASL operator. This effectively displays all known 1490 information about an ASL operator with one AcpiHelp invocation. 1491 2) Added substring match support (similar to a wildcard) for the -i 1492 (_HID/PNP IDs) option. 1493 1494 iASL/Disassembler: Since this tool does not yet support execution on big- 1495 endian machines, added detection of endianness and an error message if 1496 execution is attempted on big-endian. Support for big-endian within iASL 1497 is a feature that is on the ACPICA to-be-done list. 1498 1499 AcpiBin utility: 1500 1) Remove option to extract binary files from an acpidump; this function 1501 is made obsolete by the AcpiXtract utility. 1502 2) General cleanup of open files and allocated buffers. 1503 1504 1505 ---------------------------------------- 1506 14 February 2014. Summary of changes for version 20140214: 1507 1508 1) ACPICA kernel-resident subsystem: 1509 1510 Implemented a new mechanism to proactively prevent problems with ill- 1511 behaved reentrant control methods that create named ACPI objects. This 1512 behavior is illegal as per the ACPI specification, but is nonetheless 1513 frequently seen in the field. Previously, this could lead to an 1514 AE_ALREADY_EXISTS exception if the method was actually entered by more 1515 than one thread. This new mechanism detects such methods at table load 1516 time and marks them "serialized" to prevent reentrancy. A new global 1517 option, AcpiGbl_AutoSerializeMethods, has been added to disable this 1518 feature if desired. This mechanism and global option obsoletes and 1519 supersedes the previous AcpiGbl_SerializeAllMethods option. 1520 1521 Added the "Windows 2013" string to the _OSI support. ACPICA will now 1522 respond TRUE to _OSI queries with this string. It is the stated policy of 1523 ACPICA to add new strings to the _OSI support as soon as possible after 1524 they are defined. See the full ACPICA _OSI policy which has been added to 1525 the utilities/utosi.c file. 1526 1527 Hardened/updated the _PRT return value auto-repair code: 1528 1) Do not abort the repair on a single subpackage failure, continue to 1529 check all subpackages. 1530 2) Add check for the minimum subpackage length (4). 1531 3) Properly handle extraneous NULL package elements. 1532 1533 Added support to avoid the possibility of infinite loops when traversing 1534 object linked lists. Never allow an infinite loop, even in the face of 1535 corrupted object lists. 1536 1537 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma 1538 pack(pop) directives to ensure that the ACPICA headers are independent of 1539 compiler settings or other host headers. 1540 1541 Example Code and Data Size: These are the sizes for the OS-independent 1542 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1543 debug version of the code includes the debug output trace mechanism and 1544 has a much larger code and data size. 1545 1546 Current Release: 1547 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 1548 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 1549 Previous Release: 1550 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 1551 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 1552 1553 1554 2) iASL Compiler/Disassembler and Tools: 1555 1556 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The 1557 first reserved field was incorrectly forced to have a value of zero. This 1558 change correctly forces the field to have a value of one. ACPICA BZ 1081. 1559 1560 Debugger: Added missing support for the "Extra" and "Data" subobjects 1561 when displaying object data. 1562 1563 Debugger: Added support to display entire object linked lists when 1564 displaying object data. 1565 1566 iASL: Removed the obsolete -g option to obtain ACPI tables from the 1567 Windows registry. This feature has been superseded by the acpidump 1568 utility. 1569 1570 1571 ---------------------------------------- 1572 14 January 2014. Summary of changes for version 20140114: 1573 1574 1) ACPICA kernel-resident subsystem: 1575 1576 Updated all ACPICA copyrights and signons to 2014. Added the 2014 1577 copyright to all module headers and signons, including the standard Linux 1578 header. This affects virtually every file in the ACPICA core subsystem, 1579 iASL compiler, all ACPICA utilities, and the test suites. 1580 1581 Improved parameter validation for AcpiInstallGpeBlock. Added the 1582 following checks: 1583 1) The incoming device handle refers to type ACPI_TYPE_DEVICE. 1584 2) There is not already a GPE block attached to the device. 1585 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a 1586 device. 1587 1588 Correctly support "references" in the ACPI_OBJECT. This change fixes the 1589 support to allow references (namespace nodes) to be passed as arguments 1590 to control methods via the evaluate object interface. This is probably 1591 most useful for testing purposes, however. 1592 1593 Improved support for 32/64 bit physical addresses in printf()-like 1594 output. This change improves the support for physical addresses in printf 1595 debug statements and other output on both 32-bit and 64-bit hosts. It 1596 consistently outputs the appropriate number of bytes for each host. The 1597 %p specifier is unsatisfactory since it does not emit uniform output on 1598 all hosts/clib implementations (on some, leading zeros are not supported, 1599 leading to difficult-to-read output). 1600 1601 Example Code and Data Size: These are the sizes for the OS-independent 1602 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1603 debug version of the code includes the debug output trace mechanism and 1604 has a much larger code and data size. 1605 1606 Current Release: 1607 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 1608 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 1609 Previous Release: 1610 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 1611 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 1612 1613 1614 2) iASL Compiler/Disassembler and Tools: 1615 1616 iASL: Fix a possible fault when using the Connection() operator. Fixes a 1617 problem if the parent Field definition for the Connection operator refers 1618 to an operation region that does not exist. ACPICA BZ 1064. 1619 1620 AcpiExec: Load of local test tables is now optional. The utility has the 1621 capability to load some various tables to test features of ACPICA. 1622 However, there are enough of them that the output of the utility became 1623 confusing. With this change, only the required local tables are displayed 1624 (RSDP, XSDT, etc.) along with the actual tables loaded via the command 1625 line specification. This makes the default output simler and easier to 1626 understand. The -el command line option restores the original behavior 1627 for testing purposes. 1628 1629 AcpiExec: Added support for overlapping operation regions. This change 1630 expands the simulation of operation regions by supporting regions that 1631 overlap within the given address space. Supports SystemMemory and 1632 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031. 1633 1634 AcpiExec: Added region handler support for PCI_Config and EC spaces. This 1635 allows AcpiExec to simulate these address spaces, similar to the current 1636 support for SystemMemory and SystemIO. 1637 1638 Debugger: Added new command to read/write/compare all namespace objects. 1639 The command "test objects" will exercise the entire namespace by writing 1640 new values to each data object, and ensuring that the write was 1641 successful. The original value is then restored and verified. 1642 1643 Debugger: Added the "test predefined" command. This change makes this 1644 test public and puts it under the new "test" command. The test executes 1645 each and every predefined name within the current namespace. 1646 1647 1648 ---------------------------------------- 1649 18 December 2013. Summary of changes for version 20131218: 1650 1651 Global note: The ACPI 5.0A specification was released this month. There 1652 are no changes needed for ACPICA since this release of ACPI is an 1653 errata/clarification release. The specification is available at 1654 acpi.info. 1655 1656 1657 1) ACPICA kernel-resident subsystem: 1658 1659 Added validation of the XSDT root table if it is present. Some older 1660 platforms contain an XSDT that is ill-formed or otherwise invalid (such 1661 as containing some or all entries that are NULL pointers). This change 1662 adds a new function to validate the XSDT before actually using it. If the 1663 XSDT is found to be invalid, ACPICA will now automatically fall back to 1664 using the RSDT instead. Original implementation by Zhao Yakui. Ported to 1665 ACPICA and enhanced by Lv Zheng and Bob Moore. 1666 1667 Added a runtime option to ignore the XSDT and force the use of the RSDT. 1668 This change adds a runtime option that will force ACPICA to use the RSDT 1669 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec 1670 requires that an XSDT be used instead of the RSDT, the XSDT has been 1671 found to be corrupt or ill-formed on some machines. Lv Zheng. 1672 1673 Added a runtime option to favor 32-bit FADT register addresses over the 1674 64-bit addresses. This change adds an option to favor 32-bit FADT 1675 addresses when there is a conflict between the 32-bit and 64-bit versions 1676 of the same register. The default behavior is to use the 64-bit version 1677 in accordance with the ACPI specification. This can now be overridden via 1678 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng. 1679 1680 During the change above, the internal "Convert FADT" and "Verify FADT" 1681 functions have been merged to simplify the code, making it easier to 1682 understand and maintain. ACPICA BZ 933. 1683 1684 Improve exception reporting and handling for GPE block installation. 1685 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the 1686 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019. 1687 1688 Added helper macros to extract bus/segment numbers from the HEST table. 1689 This change adds two macros to extract the encoded bus and segment 1690 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT. 1691 Betty Dall <betty.dall (a] hp.com> 1692 1693 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used 1694 by ACPICA. It is not a public macro, so it should have no effect on 1695 existing OSV code. Lv Zheng. 1696 1697 Example Code and Data Size: These are the sizes for the OS-independent 1698 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1699 debug version of the code includes the debug output trace mechanism and 1700 has a much larger code and data size. 1701 1702 Current Release: 1703 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 1704 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 1705 Previous Release: 1706 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 1707 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 1708 1709 1710 2) iASL Compiler/Disassembler and Tools: 1711 1712 Disassembler: Improved pathname support for emitted External() 1713 statements. This change adds full pathname support for external names 1714 that have been resolved internally by the inclusion of additional ACPI 1715 tables (via the iASL -e option). Without this change, the disassembler 1716 can emit multiple externals for the same object, or it become confused 1717 when the Scope() operator is used on an external object. Overall, greatly 1718 improves the ability to actually recompile the emitted ASL code when 1719 objects a referenced across multiple ACPI tables. Reported by Michael 1720 Tsirkin (mst (a] redhat.com). 1721 1722 Tests/ASLTS: Updated functional control suite to execute with no errors. 1723 David Box. Fixed several errors related to the testing of the interpreter 1724 slack mode. Lv Zheng. 1725 1726 iASL: Added support to detect names that are declared within a control 1727 method, but are unused (these are temporary names that are only valid 1728 during the time the method is executing). A remark is issued for these 1729 cases. ACPICA BZ 1022. 1730 1731 iASL: Added full support for the DBG2 table. Adds full disassembler, 1732 table compiler, and template generator support for the DBG2 table (Debug 1733 Port 2 table). 1734 1735 iASL: Added full support for the PCCT table, update the table definition. 1736 Updates the PCCT table definition in the actbl3.h header and adds table 1737 compiler and template generator support. 1738 1739 iASL: Added an option to emit only error messages (no warnings/remarks). 1740 The -ve option will enable only error messages, warnings and remarks are 1741 suppressed. This can simplify debugging when only the errors are 1742 important, such as when an ACPI table is disassembled and there are many 1743 warnings and remarks -- but only the actual errors are of real interest. 1744 1745 Example ACPICA code (source/tools/examples): Updated the example code so 1746 that it builds to an actual working program, not just example code. Added 1747 ACPI tables and execution of an example control method in the DSDT. Added 1748 makefile support for Unix generation. 1749 1750 1751 ---------------------------------------- 1752 15 November 2013. Summary of changes for version 20131115: 1753 1754 This release is available at https://acpica.org/downloads 1755 1756 1757 1) ACPICA kernel-resident subsystem: 1758 1759 Resource Manager: Fixed loop termination for the "get AML length" 1760 function. The loop previously had an error termination on a NULL resource 1761 pointer, which can never happen since the loop simply increments a valid 1762 resource pointer. This fix changes the loop to terminate with an error on 1763 an invalid end-of-buffer condition. The problem can be seen as an 1764 infinite loop by callers to AcpiSetCurrentResources with an invalid or 1765 corrupted resource descriptor, or a resource descriptor that is missing 1766 an END_TAG descriptor. Reported by Dan Carpenter 1767 <dan.carpenter (a] oracle.com>. Lv Zheng, Bob Moore. 1768 1769 Table unload and ACPICA termination: Delete all attached data objects 1770 during namespace node deletion. This fix updates namespace node deletion 1771 to delete the entire list of attached objects (attached via 1772 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ 1773 1024. Tomasz Nowicki (tomasz.nowicki (a] linaro.org). 1774 1775 ACPICA termination: Added support to delete all objects attached to the 1776 root namespace node. This fix deletes any and all objects that have been 1777 attached to the root node via AcpiAttachData. Previously, none of these 1778 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026. 1779 1780 Debug output: Do not emit the function nesting level for the in-kernel 1781 build. The nesting level is really only useful during a single-thread 1782 execution. Therefore, only enable this output for the AcpiExec utility. 1783 Also, only emit the thread ID when executing under AcpiExec (Context 1784 switches are still always detected and a message is emitted). ACPICA BZ 1785 972. 1786 1787 Example Code and Data Size: These are the sizes for the OS-independent 1788 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1789 debug version of the code includes the debug output trace mechanism and 1790 has a much larger code and data size. 1791 1792 Current Release: 1793 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 1794 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 1795 Previous Release: 1796 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 1797 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 1798 1799 1800 2) iASL Compiler/Disassembler and Tools: 1801 1802 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the 1803 correct portable POSIX header for terminal control functions. 1804 1805 Disassembler: Fixed control method invocation issues related to the use 1806 of the CondRefOf() operator. The problem is seen in the disassembly where 1807 control method invocations may not be disassembled properly if the 1808 control method name has been used previously as an argument to CondRefOf. 1809 The solution is to not attempt to emit an external declaration for the 1810 CondRefOf target (it is not necessary in the first place). This prevents 1811 disassembler object type confusion. ACPICA BZ 988. 1812 1813 Unix Makefiles: Added an option to disable compiler optimizations and the 1814 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA 1815 with optimizations (reportedly, gcc 4.4 for example). This change adds a 1816 command line option for make (NOOPT) that disables all compiler 1817 optimizations and the _FORTIFY_SOURCE compiler flag. The default 1818 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ 1819 1034. Lv Zheng, Bob Moore. 1820 1821 Tests/ASLTS: Added options to specify individual test cases and modes. 1822 This allows testers running aslts.sh to optionally specify individual 1823 test modes and test cases. Also added an option to disable the forced 1824 generation of the ACPICA tools from source if desired. Lv Zheng. 1825 1826 ---------------------------------------- 1827 27 September 2013. Summary of changes for version 20130927: 1828 1829 This release is available at https://acpica.org/downloads 1830 1831 1832 1) ACPICA kernel-resident subsystem: 1833 1834 Fixed a problem with store operations to reference objects. This change 1835 fixes a problem where a Store operation to an ArgX object that contained 1836 a 1837 reference to a field object did not complete the automatic dereference 1838 and 1839 then write to the actual field object. Instead, the object type of the 1840 field object was inadvertently changed to match the type of the source 1841 operand. The new behavior will actually write to the field object (buffer 1842 field or field unit), thus matching the correct ACPI-defined behavior. 1843 1844 Implemented support to allow the host to redefine individual OSL 1845 prototypes. This change enables the host to redefine OSL prototypes found 1846 in the acpiosxf.h file. This allows the host to implement OSL interfaces 1847 with a macro or inlined function. Further, it allows the host to add any 1848 additional required modifiers such as __iomem, __init, __exit, etc., as 1849 necessary on a per-interface basis. Enables maximum flexibility for the 1850 OSL interfaces. Lv Zheng. 1851 1852 Hardcoded the access width for the FADT-defined reset register. The ACPI 1853 specification requires the reset register width to be 8 bits. ACPICA now 1854 hardcodes the width to 8 and ignores the FADT width value. This provides 1855 compatibility with other ACPI implementations that have allowed BIOS code 1856 with bad register width values to go unnoticed. Matthew Garett, Bob 1857 Moore, 1858 Lv Zheng. 1859 1860 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is 1861 used 1862 in the OSL header (acpiosxf). The change modifies the position of this 1863 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid 1864 build issues if the OSL defines the implementation of the interface to be 1865 an inline stub function. Lv Zheng. 1866 1867 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA 1868 initialization interfaces. This change adds a new macro for the main init 1869 and terminate external interfaces in order to support hosts that require 1870 additional or different processing for these functions. Changed from 1871 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv 1872 Zheng, Bob Moore. 1873 1874 Cleaned up the memory allocation macros for configurability. In the 1875 common 1876 case, the ACPI_ALLOCATE and related macros now resolve directly to their 1877 respective AcpiOs* OSL interfaces. Two options: 1878 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by 1879 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define. 1880 2) For AcpiExec (and for debugging), the macros can optionally be 1881 resolved 1882 to the local ACPICA interfaces that track each allocation (local tracking 1883 is used to immediately detect memory leaks). 1884 Lv Zheng. 1885 1886 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel 1887 to predefine this macro to either TRUE or FALSE during the system build. 1888 1889 Replaced __FUNCTION_ with __func__ in the gcc-specific header. 1890 1891 Example Code and Data Size: These are the sizes for the OS-independent 1892 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1893 debug version of the code includes the debug output trace mechanism and 1894 has a much larger code and data size. 1895 1896 Current Release: 1897 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 1898 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 1899 Previous Release: 1900 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 1901 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 1902 1903 1904 2) iASL Compiler/Disassembler and Tools: 1905 1906 iASL: Implemented wildcard support for the -e option. This simplifies use 1907 when there are many SSDTs that must be included to resolve external 1908 method 1909 declarations. ACPICA BZ 1041. Example: 1910 iasl -e ssdt*.dat -d dsdt.dat 1911 1912 AcpiExec: Add history/line-editing for Unix/Linux systems. This change 1913 adds a portable module that implements full history and limited line 1914 editing for Unix and Linux systems. It does not use readline() due to 1915 portability issues. Instead it uses the POSIX termio interface to put the 1916 terminal in raw input mode so that the various special keys can be 1917 trapped 1918 (such as up/down-arrow for history support and left/right-arrow for line 1919 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036. 1920 1921 AcpiXtract: Add support to handle (ignore) "empty" lines containing only 1922 one or more spaces. This provides compatible with early or different 1923 versions of the AcpiDump utility. ACPICA BZ 1044. 1924 1925 AcpiDump: Do not ignore tables that contain only an ACPI table header. 1926 Apparently, some BIOSs create SSDTs that contain an ACPI table header but 1927 no other data. This change adds support to dump these tables. Any tables 1928 shorter than the length of an ACPI table header remain in error (an error 1929 message is emitted). Reported by Yi Li. 1930 1931 Debugger: Echo actual command along with the "unknown command" message. 1932 1933 ---------------------------------------- 1934 23 August 2013. Summary of changes for version 20130823: 1935 1936 1) ACPICA kernel-resident subsystem: 1937 1938 Implemented support for host-installed System Control Interrupt (SCI) 1939 handlers. Certain ACPI functionality requires the host to handle raw 1940 SCIs. For example, the "SCI Doorbell" that is defined for memory power 1941 state support requires the host device driver to handle SCIs to examine 1942 if the doorbell has been activated. Multiple SCI handlers can be 1943 installed to allow for future expansion. New external interfaces are 1944 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for 1945 details. Lv Zheng, Bob Moore. ACPICA BZ 1032. 1946 1947 Operation region support: Never locally free the handler "context" 1948 pointer. This change removes some dangerous code that attempts to free 1949 the handler context pointer in some (rare) circumstances. The owner of 1950 the handler owns this pointer and the ACPICA code should never touch it. 1951 Although not seen to be an issue in any kernel, it did show up as a 1952 problem (fault) under AcpiExec. Also, set the internal storage field for 1953 the context pointer to zero when the region is deactivated, simply for 1954 sanity. David Box. ACPICA BZ 1039. 1955 1956 AcpiRead: On error, do not modify the return value target location. If an 1957 error happens in the middle of a split 32/32 64-bit I/O operation, do not 1958 modify the target of the return value pointer. Makes the code consistent 1959 with the rest of ACPICA. Bjorn Helgaas. 1960 1961 Example Code and Data Size: These are the sizes for the OS-independent 1962 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1963 debug version of the code includes the debug output trace mechanism and 1964 has a much larger code and data size. 1965 1966 Current Release: 1967 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 1968 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 1969 Previous Release: 1970 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 1971 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total 1972 1973 1974 2) iASL Compiler/Disassembler and Tools: 1975 1976 AcpiDump: Implemented several new features and fixed some problems: 1977 1) Added support to dump the RSDP, RSDT, and XSDT tables. 1978 2) Added support for multiple table instances (SSDT, UEFI). 1979 3) Added option to dump "customized" (overridden) tables (-c). 1980 4) Fixed a problem where some table filenames were improperly 1981 constructed. 1982 5) Improved some error messages, removed some unnecessary messages. 1983 1984 iASL: Implemented additional support for disassembly of ACPI tables that 1985 contain invocations of external control methods. The -fe<file> option 1986 allows the import of a file that specifies the external methods along 1987 with the required number of arguments for each -- allowing for the 1988 correct disassembly of the table. This is a workaround for a limitation 1989 of AML code where the disassembler often cannot determine the number of 1990 arguments required for an external control method and generates incorrect 1991 ASL code. See the iASL reference for details. ACPICA BZ 1030. 1992 1993 Debugger: Implemented a new command (paths) that displays the full 1994 pathnames (namepaths) and object types of all objects in the namespace. 1995 This is an alternative to the namespace command. 1996 1997 Debugger: Implemented a new command (sci) that invokes the SCI dispatch 1998 mechanism and any installed handlers. 1999 2000 iASL: Fixed a possible segfault for "too many parent prefixes" condition. 2001 This can occur if there are too many parent prefixes in a namepath (for 2002 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035. 2003 2004 Application OSLs: Set the return value for the PCI read functions. These 2005 functions simply return AE_OK, but should set the return value to zero 2006 also. This change implements this. ACPICA BZ 1038. 2007 2008 Debugger: Prevent possible command line buffer overflow. Increase the 2009 size of a couple of the debugger line buffers, and ensure that overflow 2010 cannot happen. ACPICA BZ 1037. 2011 2012 iASL: Changed to abort immediately on serious errors during the parsing 2013 phase. Due to the nature of ASL, there is no point in attempting to 2014 compile these types of errors, and they typically end up causing a 2015 cascade of hundreds of errors which obscure the original problem. 2016 2017 ---------------------------------------- 2018 25 July 2013. Summary of changes for version 20130725: 2019 2020 1) ACPICA kernel-resident subsystem: 2021 2022 Fixed a problem with the DerefOf operator where references to FieldUnits 2023 and BufferFields incorrectly returned the parent object, not the actual 2024 value of the object. After this change, a dereference of a FieldUnit 2025 reference results in a read operation on the field to get the value, and 2026 likewise, the appropriate BufferField value is extracted from the target 2027 buffer. 2028 2029 Fixed a problem where the _WAK method could cause a fault under these 2030 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK 2031 method returned no value. The problem is rarely seen because most kernels 2032 run ACPICA in slack mode. 2033 2034 For the DerefOf operator, a fatal error now results if an attempt is made 2035 to dereference a reference (created by the Index operator) to a NULL 2036 package element. Provides compatibility with other ACPI implementations, 2037 and this behavior will be added to a future version of the ACPI 2038 specification. 2039 2040 The ACPI Power Management Timer (defined in the FADT) is now optional. 2041 This provides compatibility with other ACPI implementations and will 2042 appear in the next version of the ACPI specification. If there is no PM 2043 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of 2044 zero in the FADT indicates no PM timer. 2045 2046 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This 2047 allows the host to globally enable/disable all vendor strings, all 2048 feature strings, or both. Intended to be primarily used for debugging 2049 purposes only. Lv Zheng. 2050 2051 Expose the collected _OSI data to the host via a global variable. This 2052 data tracks the highest level vendor ID that has been invoked by the BIOS 2053 so that the host (and potentially ACPICA itself) can change behaviors 2054 based upon the age of the BIOS. 2055 2056 Example Code and Data Size: These are the sizes for the OS-independent 2057 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2058 debug version of the code includes the debug output trace mechanism and 2059 has a much larger code and data size. 2060 2061 Current Release: 2062 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 2063 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 2064 Previous Release: 2065 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 2066 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 2067 2068 2069 2) iASL Compiler/Disassembler and Tools: 2070 2071 iASL: Created the following enhancements for the -so option (create 2072 offset table): 2073 1)Add offsets for the last nameseg in each namepath for every supported 2074 object type 2075 2)Add support for Processor, Device, Thermal Zone, and Scope objects 2076 3)Add the actual AML opcode for the parent object of every supported 2077 object type 2078 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects 2079 2080 Disassembler: Emit all unresolved external symbols in a single block. 2081 These are external references to control methods that could not be 2082 resolved, and thus, the disassembler had to make a guess at the number of 2083 arguments to parse. 2084 2085 iASL: The argument to the -T option (create table template) is now 2086 optional. If not specified, the default table is a DSDT, typically the 2087 most common case. 2088 2089 ---------------------------------------- 2090 26 June 2013. Summary of changes for version 20130626: 2091 2092 1) ACPICA kernel-resident subsystem: 2093 2094 Fixed an issue with runtime repair of the _CST object. Null or invalid 2095 elements were not always removed properly. Lv Zheng. 2096 2097 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the 2098 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device, 2099 the maximum number of GPEs is 1016. Use of multiple GPE block devices 2100 makes the system-wide number of GPEs essentially unlimited. 2101 2102 Example Code and Data Size: These are the sizes for the OS-independent 2103 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2104 debug version of the code includes the debug output trace mechanism and 2105 has a much larger code and data size. 2106 2107 Current Release: 2108 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 2109 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 2110 Previous Release: 2111 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 2112 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 2113 2114 2115 2) iASL Compiler/Disassembler and Tools: 2116 2117 Portable AcpiDump: Implemented full support for the Linux and FreeBSD 2118 hosts. Now supports Linux, FreeBSD, and Windows. 2119 2120 Disassembler: Added some missing types for the HEST and EINJ tables: "Set 2121 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline". 2122 2123 iASL/Preprocessor: Implemented full support for nested 2124 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks. 2125 2126 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes 2127 max. The original purpose of this constraint was to limit the amount of 2128 debug output. However, the string function in question (UtPrintString) is 2129 now used for the disassembler also, where 256 bytes is insufficient. 2130 Reported by RehabMan@GitHub. 2131 2132 iASL/DataTables: Fixed some problems and issues with compilation of DMAR 2133 tables. ACPICA BZ 999. Lv Zheng. 2134 2135 iASL: Fixed a couple of error exit issues that could result in a "Could 2136 not delete <file>" message during ASL compilation. 2137 2138 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though 2139 the actual signatures for these tables are "FACP" and "APIC", 2140 respectively. 2141 2142 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI 2143 tables are allowed to have multiple instances. 2144 2145 ---------------------------------------- 2146 17 May 2013. Summary of changes for version 20130517: 2147 2148 1) ACPICA kernel-resident subsystem: 2149 2150 Fixed a regression introduced in version 20130328 for _INI methods. This 2151 change fixes a problem introduced in 20130328 where _INI methods are no 2152 longer executed properly because of a memory block that was not 2153 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki 2154 <tomasz.nowicki (a] linaro.org>. 2155 2156 Fixed a possible problem with the new extended sleep registers in the 2157 ACPI 2158 5.0 FADT. Do not use these registers (even if populated) unless the HW- 2159 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ 2160 1020. Lv Zheng. 2161 2162 Implemented return value repair code for _CST predefined objects: Sort 2163 the 2164 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng. 2165 2166 Implemented a debug-only option to disable loading of SSDTs from the 2167 RSDT/XSDT during ACPICA initialization. This can be useful for debugging 2168 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in 2169 acglobal.h - ACPICA BZ 1005. Lv Zheng. 2170 2171 Fixed some issues in the ACPICA initialization and termination code: 2172 Tomasz Nowicki <tomasz.nowicki (a] linaro.org> 2173 1) Clear events initialized flag upon event component termination. ACPICA 2174 BZ 1013. 2175 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018. 2176 3) Delete global lock pending lock during termination. ACPICA BZ 1012. 2177 4) Clear debug buffer global on termination to prevent possible multiple 2178 delete. ACPICA BZ 1010. 2179 2180 Standardized all switch() blocks across the entire source base. After 2181 many 2182 years, different formatting for switch() had crept in. This change makes 2183 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan. 2184 2185 Split some files to enhance ACPICA modularity and configurability: 2186 1) Split buffer dump routines into utilities/utbuffer.c 2187 2) Split internal error message routines into utilities/uterror.c 2188 3) Split table print utilities into tables/tbprint.c 2189 4) Split iASL command-line option processing into asloptions.c 2190 2191 Makefile enhancements: 2192 1) Support for all new files above. 2193 2) Abort make on errors from any subcomponent. Chao Guan. 2194 3) Add build support for Apple Mac OS X. Liang Qi. 2195 2196 Example Code and Data Size: These are the sizes for the OS-independent 2197 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2198 debug version of the code includes the debug output trace mechanism and 2199 has a much larger code and data size. 2200 2201 Current Release: 2202 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 2203 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 2204 Previous Release: 2205 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 2206 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 2207 2208 2209 2) iASL Compiler/Disassembler and Tools: 2210 2211 New utility: Implemented an easily portable version of the acpidump 2212 utility to extract ACPI tables from the system (or a file) in an ASCII 2213 hex 2214 dump format. The top-level code implements the various command line 2215 options, file I/O, and table dump routines. To port to a new host, only 2216 three functions need to be implemented to get tables -- since this 2217 functionality is OS-dependent. See the tools/acpidump/apmain.c module and 2218 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes: 2219 1) The Windows version obtains the ACPI tables from the Registry. 2220 2) The Linux version is under development. 2221 3) Other hosts - If an OS-dependent module is submitted, it will be 2222 distributed with ACPICA. 2223 2224 iASL: Fixed a regression for -D preprocessor option (define symbol). A 2225 restructuring/change to the initialization sequence caused this option to 2226 no longer work properly. 2227 2228 iASL: Implemented a mechanism to disable specific warnings and remarks. 2229 Adds a new command line option, "-vw <messageid> as well as "#pragma 2230 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore. 2231 2232 iASL: Fix for too-strict package object validation. The package object 2233 validation for return values from the predefined names is a bit too 2234 strict, it does not allow names references within the package (which will 2235 be resolved at runtime.) These types of references cannot be validated at 2236 compile time. This change ignores named references within package objects 2237 for names that return or define static packages. 2238 2239 Debugger: Fixed the 80-character command line limitation for the History 2240 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan. 2241 2242 iASL: Added control method and package support for the -so option 2243 (generates AML offset table for BIOS support.) 2244 2245 iASL: issue a remark if a non-serialized method creates named objects. If 2246 a thread blocks within the method for any reason, and another thread 2247 enters the method, the method will fail because an attempt will be made 2248 to 2249 create the same (named) object twice. In this case, issue a remark that 2250 the method should be marked serialized. NOTE: may become a warning later. 2251 ACPICA BZ 909. 2252 2253 ---------------------------------------- 2254 18 April 2013. Summary of changes for version 20130418: 2255 2256 1) ACPICA kernel-resident subsystem: 2257 2258 Fixed a possible buffer overrun during some rare but specific field unit 2259 read operations. This overrun can only happen if the DSDT version is 1 -- 2260 meaning that all AML integers are 32 bits -- and the field length is 2261 between 33 and 55 bits long. During the read, an internal buffer object 2262 is 2263 created for the field unit because the field is larger than an integer 2264 (32 2265 bits). However, in this case, the buffer will be incorrectly written 2266 beyond the end because the buffer length is less than the internal 2267 minimum 2268 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes 2269 long, but a full 8 bytes will be written. 2270 2271 Updated the Embedded Controller "orphan" _REG method support. This refers 2272 to _REG methods under the EC device that have no corresponding operation 2273 region. This is allowed by the ACPI specification. This update removes a 2274 dependency on the existence an ECDT table. It will execute an orphan _REG 2275 method as long as the operation region handler for the EC is installed at 2276 the EC device node and not the namespace root. Rui Zhang (original 2277 update), Bob Moore (update/integrate). 2278 2279 Implemented run-time argument typechecking for all predefined ACPI names 2280 (_STA, _BIF, etc.) This change performs object typechecking on all 2281 incoming arguments for all predefined names executed via 2282 AcpiEvaluateObject. This ensures that ACPI-related device drivers are 2283 passing correct object types as well as the correct number of arguments 2284 (therefore identifying any issues immediately). Also, the ASL/namespace 2285 definition of the predefined name is checked against the ACPI 2286 specification for the proper argument count. Adds one new file, 2287 nsarguments.c 2288 2289 Changed an exception code for the ASL UnLoad() operator. Changed the 2290 exception code for the case where the input DdbHandle is invalid, from 2291 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE. 2292 2293 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the 2294 global makefile. The use of this flag causes compiler errors on earlier 2295 versions of GCC, so it has been removed for compatibility. 2296 2297 Miscellaneous cleanup: 2298 1) Removed some unused/obsolete macros 2299 2) Fixed a possible memory leak in the _OSI support 2300 3) Removed an unused variable in the predefined name support 2301 4) Windows OSL: remove obsolete reference to a memory list field 2302 2303 Example Code and Data Size: These are the sizes for the OS-independent 2304 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2305 debug version of the code includes the debug output trace mechanism and 2306 has a much larger code and data size. 2307 2308 Current Release: 2309 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 2310 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 2311 Previous Release: 2312 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 2313 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 2314 2315 2316 2) iASL Compiler/Disassembler and Tools: 2317 2318 AcpiExec: Added installation of a handler for the SystemCMOS address 2319 space. This prevents control method abort if a method accesses this 2320 space. 2321 2322 AcpiExec: Added support for multiple EC devices, and now install EC 2323 operation region handler(s) at the actual EC device instead of the 2324 namespace root. This reflects the typical behavior of host operating 2325 systems. 2326 2327 AcpiExec: Updated to ensure that all operation region handlers are 2328 installed before the _REG methods are executed. This prevents a _REG 2329 method from aborting if it accesses an address space has no handler. 2330 AcpiExec installs a handler for every possible address space. 2331 2332 Debugger: Enhanced the "handlers" command to display non-root handlers. 2333 This change enhances the handlers command to display handlers associated 2334 with individual devices throughout the namespace, in addition to the 2335 currently supported display of handlers associated with the root 2336 namespace 2337 node. 2338 2339 ASL Test Suite: Several test suite errors have been identified and 2340 resolved, reducing the total error count during execution. Chao Guan. 2341 2342 ---------------------------------------- 2343 28 March 2013. Summary of changes for version 20130328: 2344 2345 1) ACPICA kernel-resident subsystem: 2346 2347 Fixed several possible race conditions with the internal object reference 2348 counting mechanism. Some of the external ACPICA interfaces update object 2349 reference counts without holding the interpreter or namespace lock. This 2350 change adds a spinlock to protect reference count updates on the internal 2351 ACPICA objects. Reported by and with assistance from Andriy Gapon 2352 (avg (a] FreeBSD.org). 2353 2354 FADT support: Removed an extraneous warning for very large GPE register 2355 sets. This change removes a size mismatch warning if the legacy length 2356 field for a GPE register set is larger than the 64-bit GAS structure can 2357 accommodate. GPE register sets can be larger than the 255-bit width 2358 limitation of the GAS structure. Linn Crosetto (linn (a] hp.com). 2359 2360 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error 2361 return from this interface. Handles a possible timeout case if 2362 ACPI_WAIT_FOREVER is modified by the host to be a value less than 2363 "forever". Jung-uk Kim. 2364 2365 Predefined name support: Add allowed/required argument type information 2366 to 2367 the master predefined info table. This change adds the infrastructure to 2368 enable typechecking on incoming arguments for all predefined 2369 methods/objects. It does not actually contain the code that will fully 2370 utilize this information, this is still under development. Also condenses 2371 some duplicate code for the predefined names into a new module, 2372 utilities/utpredef.c 2373 2374 Example Code and Data Size: These are the sizes for the OS-independent 2375 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2376 debug version of the code includes the debug output trace mechanism and 2377 has a much larger code and data size. 2378 2379 Previous Release: 2380 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 2381 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 2382 Current Release: 2383 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 2384 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 2385 2386 2387 2) iASL Compiler/Disassembler and Tools: 2388 2389 iASL: Implemented a new option to simplify the development of ACPI- 2390 related 2391 BIOS code. Adds support for a new "offset table" output file. The -so 2392 option will create a C table containing the AML table offsets of various 2393 named objects in the namespace so that BIOS code can modify them easily 2394 at 2395 boot time. This can simplify BIOS runtime code by eliminating expensive 2396 searches for "magic values", enhancing boot times and adding greater 2397 reliability. With assistance from Lee Hamel. 2398 2399 iASL: Allow additional predefined names to return zero-length packages. 2400 Now, all predefined names that are defined by the ACPI specification to 2401 return a "variable-length package of packages" are allowed to return a 2402 zero length top-level package. This allows the BIOS to tell the host that 2403 the requested feature is not supported, and supports existing BIOS/ASL 2404 code and practices. 2405 2406 iASL: Changed the "result not used" warning to an error. This is the case 2407 where an ASL operator is effectively a NOOP because the result of the 2408 operation is not stored anywhere. For example: 2409 Add (4, Local0) 2410 There is no target (missing 3rd argument), nor is the function return 2411 value used. This is potentially a very serious problem -- since the code 2412 was probably intended to do something, but for whatever reason, the value 2413 was not stored. Therefore, this issue has been upgraded from a warning to 2414 an error. 2415 2416 AcpiHelp: Added allowable/required argument types to the predefined names 2417 info display. This feature utilizes the recent update to the predefined 2418 names table (above). 2419 2420 ---------------------------------------- 2421 14 February 2013. Summary of changes for version 20130214: 2422 2423 1) ACPICA Kernel-resident Subsystem: 2424 2425 Fixed a possible regression on some hosts: Reinstated the safe return 2426 macros (return_ACPI_STATUS, etc.) that ensure that the argument is 2427 evaluated only once. Although these macros are not needed for the ACPICA 2428 code itself, they are often used by ACPI-related host device drivers 2429 where 2430 the safe feature may be necessary. 2431 2432 Fixed several issues related to the ACPI 5.0 reduced hardware support 2433 (SOC): Now ensure that if the platform declares itself as hardware- 2434 reduced 2435 via the FADT, the following functions become NOOPs (and always return 2436 AE_OK) because ACPI is always enabled by definition on these machines: 2437 AcpiEnable 2438 AcpiDisable 2439 AcpiHwGetMode 2440 AcpiHwSetMode 2441 2442 Dynamic Object Repair: Implemented additional runtime repairs for 2443 predefined name return values. Both of these repairs can simplify code in 2444 the related device drivers that invoke these methods: 2445 1) For the _STR and _MLS names, automatically repair/convert an ASCII 2446 string to a Unicode buffer. 2447 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with 2448 a 2449 lone end tag descriptor in the following cases: A Return(0) was executed, 2450 a null buffer was returned, or no object at all was returned (non-slack 2451 mode only). Adds a new file, nsconvert.c 2452 ACPICA BZ 998. Bob Moore, Lv Zheng. 2453 2454 Resource Manager: Added additional code to prevent possible infinite 2455 loops 2456 while traversing corrupted or ill-formed resource template buffers. Check 2457 for zero-length resource descriptors in all code that loops through 2458 resource templates (the length field is used to index through the 2459 template). This change also hardens the external AcpiWalkResources and 2460 AcpiWalkResourceBuffer interfaces. 2461 2462 Local Cache Manager: Enhanced the main data structure to eliminate an 2463 unnecessary mechanism to access the next object in the list. Actually 2464 provides a small performance enhancement for hosts that use the local 2465 ACPICA cache manager. Jung-uk Kim. 2466 2467 Example Code and Data Size: These are the sizes for the OS-independent 2468 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2469 debug version of the code includes the debug output trace mechanism and 2470 has a much larger code and data size. 2471 2472 Previous Release: 2473 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 2474 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 2475 Current Release: 2476 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 2477 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 2478 2479 2480 2) iASL Compiler/Disassembler and Tools: 2481 2482 iASL/Disassembler: Fixed several issues with the definition of the ACPI 2483 5.0 RASF table (RAS Feature Table). This change incorporates late changes 2484 that were made to the ACPI 5.0 specification. 2485 2486 iASL/Disassembler: Added full support for the following new ACPI tables: 2487 1) The MTMR table (MID Timer Table) 2488 2) The VRTC table (Virtual Real Time Clock Table). 2489 Includes header file, disassembler, table compiler, and template support 2490 for both tables. 2491 2492 iASL: Implemented compile-time validation of package objects returned by 2493 predefined names. This new feature validates static package objects 2494 returned by the various predefined names defined to return packages. Both 2495 object types and package lengths are validated, for both parent packages 2496 and sub-packages, if any. The code is similar in structure and behavior 2497 to 2498 the runtime repair mechanism within the AML interpreter and uses the 2499 existing predefined name information table. Adds a new file, aslprepkg.c. 2500 ACPICA BZ 938. 2501 2502 iASL: Implemented auto-detection of binary ACPI tables for disassembly. 2503 This feature detects a binary file with a valid ACPI table header and 2504 invokes the disassembler automatically. Eliminates the need to 2505 specifically invoke the disassembler with the -d option. ACPICA BZ 862. 2506 2507 iASL/Disassembler: Added several warnings for the case where there are 2508 unresolved control methods during the disassembly. This can potentially 2509 cause errors when the output file is compiled, because the disassembler 2510 assumes zero method arguments in these cases (it cannot determine the 2511 actual number of arguments without resolution/definition of the method). 2512 2513 Debugger: Added support to display all resources with a single command. 2514 Invocation of the resources command with no arguments will now display 2515 all 2516 resources within the current namespace. 2517 2518 AcpiHelp: Added descriptive text for each ACPICA exception code displayed 2519 via the -e option. 2520 2521 ---------------------------------------- 2522 17 January 2013. Summary of changes for version 20130117: 2523 2524 1) ACPICA Kernel-resident Subsystem: 2525 2526 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to 2527 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx 2528 objects to return a package containing one integer, most BIOS code 2529 returns 2530 two integers and the previous code reflects that. However, we also need 2531 to 2532 support BIOS code that actually implements to the ACPI spec, and this 2533 change reflects this. 2534 2535 Fixed two issues with the ACPI_DEBUG_PRINT macros: 2536 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for 2537 C compilers that require this support. 2538 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since 2539 ACPI_DEBUG is already used by many of the various hosts. 2540 2541 Updated all ACPICA copyrights and signons to 2013. Added the 2013 2542 copyright to all module headers and signons, including the standard Linux 2543 header. This affects virtually every file in the ACPICA core subsystem, 2544 iASL compiler, all ACPICA utilities, and the test suites. 2545 2546 Example Code and Data Size: These are the sizes for the OS-independent 2547 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2548 debug version of the code includes the debug output trace mechanism and 2549 has a much larger code and data size. 2550 2551 Previous Release: 2552 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 2553 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 2554 Current Release: 2555 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 2556 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 2557 2558 2559 2) iASL Compiler/Disassembler and Tools: 2560 2561 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and 2562 prevent a possible fault on some hosts. Some C libraries modify the arg 2563 pointer parameter to vfprintf making it difficult to call it twice in the 2564 AcpiOsVprintf function. Use a local buffer to workaround this issue. This 2565 does not affect the Windows OSL since the Win C library does not modify 2566 the arg pointer. Chao Guan, Bob Moore. 2567 2568 iASL: Fixed a possible infinite loop when the maximum error count is 2569 reached. If an output file other than the .AML file is specified (such as 2570 a listing file), and the maximum number of errors is reached, do not 2571 attempt to flush data to the output file(s) as the compiler is aborting. 2572 This can cause an infinite loop as the max error count code essentially 2573 keeps calling itself. 2574 2575 iASL/Disassembler: Added an option (-in) to ignore NOOP 2576 opcodes/operators. 2577 Implemented for both the compiler and the disassembler. Often, the NOOP 2578 opcode is used as padding for packages that are changed dynamically by 2579 the 2580 BIOS. When disassembled and recompiled, these NOOPs will cause syntax 2581 errors. This option causes the disassembler to ignore all NOOP opcodes 2582 (0xA3), and it also causes the compiler to ignore all ASL source code 2583 NOOP 2584 statements as well. 2585 2586 Debugger: Enhanced the Sleep command to execute all sleep states. This 2587 change allows Sleep to be invoked with no arguments and causes the 2588 debugger to execute all of the sleep states, 0-5, automatically. 2589 2590 ---------------------------------------- 2591 20 December 2012. Summary of changes for version 20121220: 2592 2593 1) ACPICA Kernel-resident Subsystem: 2594 2595 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an 2596 alternate entry point for AcpiWalkResources and improves the usability of 2597 the resource manager by accepting as input a buffer containing the output 2598 of either a _CRS, _PRS, or _AEI method. The key functionality is that the 2599 input buffer is not deleted by this interface so that it can be used by 2600 the host later. See the ACPICA reference for details. 2601 2602 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table 2603 (DSDT version < 2). The constant will be truncated and this warning 2604 reflects that behavior. 2605 2606 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ, 2607 ExtendedInterrupt, and GpioInt descriptors. This change adds support to 2608 both get and set the new wake bit in these descriptors, separately from 2609 the existing share bit. Reported by Aaron Lu. 2610 2611 Interpreter: Fix Store() when an implicit conversion is not possible. For 2612 example, in the cases such as a store of a string to an existing package 2613 object, implement the store as a CopyObject(). This is a small departure 2614 from the ACPI specification which states that the control method should 2615 be 2616 aborted in this case. However, the ASLTS suite depends on this behavior. 2617 2618 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT 2619 macros: check if debug output is currently enabled as soon as possible to 2620 minimize performance impact if debug is in fact not enabled. 2621 2622 Source code restructuring: Cleanup to improve modularity. The following 2623 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c, 2624 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c. 2625 Associated makefiles and project files have been updated. 2626 2627 Changed an exception code for LoadTable operator. For the case where one 2628 of the input strings is too long, change the returned exception code from 2629 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT. 2630 2631 Fixed a possible memory leak in dispatcher error path. On error, delete 2632 the mutex object created during method mutex creation. Reported by 2633 tim.gardner (a] canonical.com. 2634 2635 Example Code and Data Size: These are the sizes for the OS-independent 2636 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2637 debug version of the code includes the debug output trace mechanism and 2638 has a much larger code and data size. 2639 2640 Previous Release: 2641 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 2642 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2643 Current Release: 2644 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 2645 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 2646 2647 2648 2) iASL Compiler/Disassembler and Tools: 2649 2650 iASL: Disallow a method call as argument to the ObjectType ASL operator. 2651 This change tracks an errata to the ACPI 5.0 document. The AML grammar 2652 will not allow the interpreter to differentiate between a method and a 2653 method invocation when these are used as an argument to the ObjectType 2654 operator. The ACPI specification change is to disallow a method 2655 invocation 2656 (UserTerm) for the ObjectType operator. 2657 2658 Finish support for the TPM2 and CSRT tables in the headers, table 2659 compiler, and disassembler. 2660 2661 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout 2662 always expires immediately if the semaphore is not available. The 2663 original 2664 code was using a relative-time timeout, but sem_timedwait requires the 2665 use 2666 of an absolute time. 2667 2668 iASL: Added a remark if the Timer() operator is used within a 32-bit 2669 table. This operator returns a 64-bit time value that will be truncated 2670 within a 32-bit table. 2671 2672 iASL Source code restructuring: Cleanup to improve modularity. The 2673 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c, 2674 aslmethod.c, and aslfileio.c. Associated makefiles and project files have 2675 been updated. 2676 2677 2678 ---------------------------------------- 2679 14 November 2012. Summary of changes for version 20121114: 2680 2681 1) ACPICA Kernel-resident Subsystem: 2682 2683 Implemented a performance enhancement for ACPI/AML Package objects. This 2684 change greatly increases the performance of Package objects within the 2685 interpreter. It changes the processing of reference counts for packages 2686 by 2687 optimizing for the most common case where the package sub-objects are 2688 either Integers, Strings, or Buffers. Increases the overall performance 2689 of 2690 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by 2691 2X.) 2692 Chao Guan. ACPICA BZ 943. 2693 2694 Implemented and deployed common macros to extract flag bits from resource 2695 descriptors. Improves readability and maintainability of the code. Fixes 2696 a 2697 problem with the UART serial bus descriptor for the number of data bits 2698 flags (was incorrectly 2 bits, should be 3). 2699 2700 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation 2701 of the macros and changed the SETx macros to the style of (destination, 2702 source). Also added ACPI_CASTx companion macros. Lv Zheng. 2703 2704 Example Code and Data Size: These are the sizes for the OS-independent 2705 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2706 debug version of the code includes the debug output trace mechanism and 2707 has a much larger code and data size. 2708 2709 Previous Release: 2710 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 2711 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2712 Current Release: 2713 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 2714 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2715 2716 2717 2) iASL Compiler/Disassembler and Tools: 2718 2719 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change 2720 adds the ShareAndWake and ExclusiveAndWake flags which were added to the 2721 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986. 2722 2723 Disassembler: Fixed a problem with external declaration generation. Fixes 2724 a problem where an incorrect pathname could be generated for an external 2725 declaration if the original reference to the object includes leading 2726 carats (^). ACPICA BZ 984. 2727 2728 Debugger: Completed a major update for the Disassemble<method> command. 2729 This command was out-of-date and did not properly disassemble control 2730 methods that had any reasonable complexity. This fix brings the command 2731 up 2732 to the same level as the rest of the disassembler. Adds one new file, 2733 dmdeferred.c, which is existing code that is now common with the main 2734 disassembler and the debugger disassemble command. ACPICA MZ 978. 2735 2736 iASL: Moved the parser entry prototype to avoid a duplicate declaration. 2737 Newer versions of Bison emit this prototype, so moved the prototype out 2738 of 2739 the iASL header to where it is actually used in order to avoid a 2740 duplicate 2741 declaration. 2742 2743 iASL/Tools: Standardized use of the stream I/O functions: 2744 1) Ensure check for I/O error after every fopen/fread/fwrite 2745 2) Ensure proper order of size/count arguments for fread/fwrite 2746 3) Use test of (Actual != Requested) after all fwrite, and most fread 2747 4) Standardize I/O error messages 2748 Improves reliability and maintainability of the code. Bob Moore, Lv 2749 Zheng. 2750 ACPICA BZ 981. 2751 2752 Disassembler: Prevent duplicate External() statements. During generation 2753 of external statements, detect similar pathnames that are actually 2754 duplicates such as these: 2755 External (\ABCD) 2756 External (ABCD) 2757 Remove all leading '\' characters from pathnames during the external 2758 statement generation so that duplicates will be detected and tossed. 2759 ACPICA BZ 985. 2760 2761 Tools: Replace low-level I/O with stream I/O functions. Replace 2762 open/read/write/close with the stream I/O equivalents 2763 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob 2764 Moore. 2765 2766 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table 2767 name header so that AcpiXtract recognizes the output file/table. 2768 2769 iASL: Remove obsolete -2 option flag. Originally intended to force the 2770 compiler/disassembler into an ACPI 2.0 mode, this was never implemented 2771 and the entire concept is now obsolete. 2772 2773 ---------------------------------------- 2774 18 October 2012. Summary of changes for version 20121018: 2775 2776 2777 1) ACPICA Kernel-resident Subsystem: 2778 2779 Updated support for the ACPI 5.0 MPST table. Fixes some problems 2780 introduced by late changes to the table as it was added to the ACPI 5.0 2781 specification. Includes header, disassembler, and data table compiler 2782 support as well as a new version of the MPST template. 2783 2784 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI 2785 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID 2786 methods: _HID, _CID, and _UID. 2787 2788 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed 2789 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent 2790 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId) 2791 names for their various drivers. Affects the AcpiGetObjectInfo external 2792 interface, and other internal interfaces as well. 2793 2794 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME. 2795 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME 2796 on machines that support non-aligned transfers. Optimizes for this case 2797 rather than using a strncpy. With assistance from Zheng Lv. 2798 2799 Resource Manager: Small fix for buffer size calculation. Fixed a one byte 2800 error in the output buffer calculation. Feng Tang. ACPICA BZ 849. 2801 2802 Added a new debug print message for AML mutex objects that are force- 2803 released. At control method termination, any currently acquired mutex 2804 objects are force-released. Adds a new debug-only message for each one 2805 that is released. 2806 2807 Audited/updated all ACPICA return macros and the function debug depth 2808 counter: 1) Ensure that all functions that use the various TRACE macros 2809 also use the appropriate ACPICA return macros. 2) Ensure that all normal 2810 return statements surround the return expression (value) with parens to 2811 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng, 2812 Zheng Lv, Bob Moore. ACPICA Bugzilla 972. 2813 2814 Global source code changes/maintenance: All extra lines at the start and 2815 end of each source file have been removed for consistency. Also, within 2816 comments, all new sentences start with a single space instead of a double 2817 space, again for consistency across the code base. 2818 2819 Example Code and Data Size: These are the sizes for the OS-independent 2820 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2821 debug version of the code includes the debug output trace mechanism and 2822 has a much larger code and data size. 2823 2824 Previous Release: 2825 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 2826 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 2827 Current Release: 2828 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 2829 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2830 2831 2832 2) iASL Compiler/Disassembler and Tools: 2833 2834 AcpiExec: Improved the algorithm used for memory leak/corruption 2835 detection. Added some intelligence to the code that maintains the global 2836 list of allocated memory. The list is now ordered by allocated memory 2837 address, significantly improving performance. When running AcpiExec on 2838 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending 2839 on the platform and/or the environment. Note, this performance 2840 enhancement affects the AcpiExec utility only, not the kernel-resident 2841 ACPICA code. 2842 2843 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For 2844 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix 2845 incorrect table offset reported for invalid opcodes. Report the original 2846 32-bit value for bad ACPI_NAMEs (as well as the repaired name.) 2847 2848 Disassembler: Enhanced the -vt option to emit the binary table data in 2849 hex format to assist with debugging. 2850 2851 Fixed a potential filename buffer overflow in osunixdir.c. Increased the 2852 size of file structure. Colin Ian King. 2853 2854 ---------------------------------------- 2855 13 September 2012. Summary of changes for version 20120913: 2856 2857 2858 1) ACPICA Kernel-resident Subsystem: 2859 2860 ACPI 5.0: Added two new notify types for the Hardware Error Notification 2861 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5) 2862 and 2863 MCE(6). 2864 2865 Table Manager: Merged/removed duplicate code in the root table resize 2866 functions. One function is external, the other is internal. Lv Zheng, 2867 ACPICA 2868 BZ 846. 2869 2870 Makefiles: Completely removed the obsolete "Linux" makefiles under 2871 acpica/generate/linux. These makefiles are obsolete and have been 2872 replaced 2873 by 2874 the generic unix makefiles under acpica/generate/unix. 2875 2876 Makefiles: Ensure that binary files always copied properly. Minor rule 2877 change 2878 to ensure that the final binary output files are always copied up to the 2879 appropriate binary directory (bin32 or bin64.) 2880 2881 Example Code and Data Size: These are the sizes for the OS-independent 2882 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2883 debug 2884 version of the code includes the debug output trace mechanism and has a 2885 much 2886 larger code and data size. 2887 2888 Previous Release: 2889 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 2890 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 2891 Current Release: 2892 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 2893 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 2894 2895 2896 2) iASL Compiler/Disassembler and Tools: 2897 2898 Disassembler: Fixed a possible fault during the disassembly of resource 2899 descriptors when a second parse is required because of the invocation of 2900 external control methods within the table. With assistance from 2901 adq (a] lidskialf.net. ACPICA BZ 976. 2902 2903 iASL: Fixed a namepath optimization problem. An error can occur if the 2904 parse 2905 node that contains the namepath to be optimized does not have a parent 2906 node 2907 that is a named object. This change fixes the problem. 2908 2909 iASL: Fixed a regression where the AML file is not deleted on errors. The 2910 AML 2911 output file should be deleted if there are any errors during the 2912 compiler. 2913 The 2914 only exception is if the -f (force output) option is used. ACPICA BZ 974. 2915 2916 iASL: Added a feature to automatically increase internal line buffer 2917 sizes. 2918 Via realloc(), automatically increase the internal line buffer sizes as 2919 necessary to support very long source code lines. The current version of 2920 the 2921 preprocessor requires a buffer long enough to contain full source code 2922 lines. 2923 This change increases the line buffer(s) if the input lines go beyond the 2924 current buffer size. This eliminates errors that occurred when a source 2925 code 2926 line was longer than the buffer. 2927 2928 iASL: Fixed a problem with constant folding in method declarations. The 2929 SyncLevel term is a ByteConstExpr, and incorrect code would be generated 2930 if a 2931 Type3 opcode was used. 2932 2933 Debugger: Improved command help support. For incorrect argument count, 2934 display 2935 full help for the command. For help command itself, allow an argument to 2936 specify a command. 2937 2938 Test Suites: Several bug fixes for the ASLTS suite reduces the number of 2939 errors during execution of the suite. Guan Chao. 2940 2941 ---------------------------------------- 2942 16 August 2012. Summary of changes for version 20120816: 2943 2944 2945 1) ACPICA Kernel-resident Subsystem: 2946 2947 Removed all use of the deprecated _GTS and _BFS predefined methods. The 2948 _GTS 2949 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially 2950 deprecated and will probably be removed from the ACPI specification. 2951 Windows 2952 does not invoke them, and reportedly never will. The final nail in the 2953 coffin 2954 is that the ACPI specification states that these methods must be run with 2955 interrupts off, which is not going to happen in a kernel interpreter. 2956 Note: 2957 Linux has removed all use of the methods also. It was discovered that 2958 invoking these functions caused failures on some machines, probably 2959 because 2960 they were never tested since Windows does not call them. Affects two 2961 external 2962 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng. 2963 ACPICA BZ 969. 2964 2965 Implemented support for complex bit-packed buffers returned from the _PLD 2966 (Physical Location of Device) predefined method. Adds a new external 2967 interface, AcpiDecodePldBuffer that parses the buffer into a more usable 2968 C 2969 structure. Note: C Bitfields cannot be used for this type of predefined 2970 structure since the memory layout of individual bitfields is not defined 2971 by 2972 the C language. In addition, there are endian concerns where a compiler 2973 will 2974 change the bitfield ordering based on the machine type. The new ACPICA 2975 interface eliminates these issues, and should be called after _PLD is 2976 executed. ACPICA BZ 954. 2977 2978 Implemented a change to allow a scope change to root (via "Scope (\)") 2979 during 2980 execution of module-level ASL code (code that is executed at table load 2981 time.) Lin Ming. 2982 2983 Added the Windows8/Server2012 string for the _OSI method. This change 2984 adds 2985 a 2986 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server 2987 2012. 2988 2989 Added header support for the new ACPI tables DBG2 (Debug Port Table Type 2990 2) 2991 and CSRT (Core System Resource Table). 2992 2993 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined 2994 names. This simplifies access to the buffers returned by these predefined 2995 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956. 2996 2997 GPE support: Removed an extraneous parameter from the various low-level 2998 internal GPE functions. Tang Feng. 2999 3000 Removed the linux makefiles from the unix packages. The generate/linux 3001 makefiles are obsolete and have been removed from the unix tarball 3002 release 3003 packages. The replacement makefiles are under generate/unix, and there is 3004 a 3005 top-level makefile under the main acpica directory. ACPICA BZ 967, 912. 3006 3007 Updates for Unix makefiles: 3008 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven. 3009 2) Update linker flags (move to end of command line) for AcpiExec 3010 utility. 3011 Guan Chao. 3012 3013 Split ACPICA initialization functions to new file, utxfinit.c. Split from 3014 utxface.c to improve modularity and reduce file size. 3015 3016 Example Code and Data Size: These are the sizes for the OS-independent 3017 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3018 debug version of the code includes the debug output trace mechanism and 3019 has a 3020 much larger code and data size. 3021 3022 Previous Release: 3023 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 3024 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 3025 Current Release: 3026 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 3027 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 3028 3029 3030 2) iASL Compiler/Disassembler and Tools: 3031 3032 iASL: Fixed a problem with constant folding for fixed-length constant 3033 expressions. The constant-folding code was not being invoked for constant 3034 expressions that allow the use of type 3/4/5 opcodes to generate 3035 constants 3036 for expressions such as ByteConstExpr, WordConstExpr, etc. This could 3037 result 3038 in the generation of invalid AML bytecode. ACPICA BZ 970. 3039 3040 iASL: Fixed a generation issue on newer versions of Bison. Newer versions 3041 apparently automatically emit some of the necessary externals. This 3042 change 3043 handles these versions in order to eliminate generation warnings. 3044 3045 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables. 3046 3047 Disassembler: Add support to decode _PLD buffers. The decoded buffer 3048 appears 3049 within comments in the output file. 3050 3051 Debugger: Fixed a regression with the "Threads" command where 3052 AE_BAD_PARAMETER was always returned. 3053 3054 ---------------------------------------- 3055 11 July 2012. Summary of changes for version 20120711: 3056 3057 1) ACPICA Kernel-resident Subsystem: 3058 3059 Fixed a possible fault in the return package object repair code. Fixes a 3060 problem that can occur when a lone package object is wrapped with an 3061 outer 3062 package object in order to force conformance to the ACPI specification. 3063 Can 3064 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, 3065 _DLM, 3066 _CSD, _PSD, _TSD. 3067 3068 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the 3069 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the 3070 ARB_DIS bit must be implemented in the host-dependent C3 processor power 3071 state 3072 support. Note, ARB_DIS is obsolete and only applies to older chipsets, 3073 both 3074 Intel and other vendors. (for Intel: ICH4-M and earlier) 3075 3076 This change removes the code to disable/enable bus master arbitration 3077 during 3078 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register 3079 causes 3080 resume problems on some machines. The change has been in use for over 3081 seven 3082 years within Linux. 3083 3084 Implemented two new external interfaces to support host-directed dynamic 3085 ACPI 3086 table load and unload. They are intended to simplify the host 3087 implementation 3088 of hot-plug support: 3089 AcpiLoadTable: Load an SSDT from a buffer into the namespace. 3090 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the 3091 table. 3092 See the ACPICA reference for additional details. Adds one new file, 3093 components/tables/tbxfload.c 3094 3095 Implemented and deployed two new interfaces for errors and warnings that 3096 are 3097 known to be caused by BIOS/firmware issues: 3098 AcpiBiosError: Prints "ACPI Firmware Error" message. 3099 AcpiBiosWarning: Prints "ACPI Firmware Warning" message. 3100 Deployed these new interfaces in the ACPICA Table Manager code for ACPI 3101 table 3102 and FADT errors. Additional deployment to be completed as appropriate in 3103 the 3104 future. The associated conditional macros are ACPI_BIOS_ERROR and 3105 ACPI_BIOS_WARNING. See the ACPICA reference for additional details. 3106 ACPICA 3107 BZ 3108 843. 3109 3110 Implicit notify support: ensure that no memory allocation occurs within a 3111 critical region. This fix moves a memory allocation outside of the time 3112 that a 3113 spinlock is held. Fixes issues on systems that do not allow this 3114 behavior. 3115 Jung-uk Kim. 3116 3117 Split exception code utilities and tables into a new file, 3118 utilities/utexcep.c 3119 3120 Example Code and Data Size: These are the sizes for the OS-independent 3121 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3122 debug 3123 version of the code includes the debug output trace mechanism and has a 3124 much 3125 larger code and data size. 3126 3127 Previous Release: 3128 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 3129 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 3130 Current Release: 3131 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 3132 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 3133 3134 3135 2) iASL Compiler/Disassembler and Tools: 3136 3137 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead 3138 of 3139 0. Jung-uk Kim. 3140 3141 Debugger: Enhanced the "tables" command to emit additional information 3142 about 3143 the current set of ACPI tables, including the owner ID and flags decode. 3144 3145 Debugger: Reimplemented the "unload" command to use the new 3146 AcpiUnloadParentTable external interface. This command was disable 3147 previously 3148 due to need for an unload interface. 3149 3150 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e 3151 option 3152 will decode 16-bit hex status codes (ACPI_STATUS) to name strings. 3153 3154 ---------------------------------------- 3155 20 June 2012. Summary of changes for version 20120620: 3156 3157 3158 1) ACPICA Kernel-resident Subsystem: 3159 3160 Implemented support to expand the "implicit notify" feature to allow 3161 multiple 3162 devices to be notified by a single GPE. This feature automatically 3163 generates a 3164 runtime device notification in the absence of a BIOS-provided GPE control 3165 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit 3166 notify is 3167 provided by ACPICA for Windows compatibility, and is a workaround for 3168 BIOS 3169 AML 3170 code errors. See the description of the AcpiSetupGpeForWake interface in 3171 the 3172 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 3173 3174 Changed some comments and internal function names to simplify and ensure 3175 correctness of the Linux code translation. No functional changes. 3176 3177 Example Code and Data Size: These are the sizes for the OS-independent 3178 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3179 debug 3180 version of the code includes the debug output trace mechanism and has a 3181 much 3182 larger code and data size. 3183 3184 Previous Release: 3185 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 3186 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 3187 Current Release: 3188 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 3189 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 3190 3191 3192 2) iASL Compiler/Disassembler and Tools: 3193 3194 Disassembler: Added support to emit short, commented descriptions for the 3195 ACPI 3196 predefined names in order to improve the readability of the disassembled 3197 output. ACPICA BZ 959. Changes include: 3198 1) Emit descriptions for all standard predefined names (_INI, _STA, 3199 _PRW, 3200 etc.) 3201 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 3202 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, 3203 etc.) 3204 3205 AcpiSrc: Fixed several long-standing Linux code translation issues. 3206 Argument 3207 descriptions in function headers are now translated properly to lower 3208 case 3209 and 3210 underscores. ACPICA BZ 961. Also fixes translation problems such as 3211 these: 3212 (old -> new) 3213 i_aSL -> iASL 3214 00-7_f -> 00-7F 3215 16_k -> 16K 3216 local_fADT -> local_FADT 3217 execute_oSI -> execute_OSI 3218 3219 iASL: Fixed a problem where null bytes were inadvertently emitted into 3220 some 3221 listing files. 3222 3223 iASL: Added the existing debug options to the standard help screen. There 3224 are 3225 no longer two different help screens. ACPICA BZ 957. 3226 3227 AcpiHelp: Fixed some typos in the various predefined name descriptions. 3228 Also 3229 expand some of the descriptions where appropriate. 3230 3231 iASL: Fixed the -ot option (display compile times/statistics). Was not 3232 working 3233 properly for standard output; only worked for the debug file case. 3234 3235 ---------------------------------------- 3236 18 May 2012. Summary of changes for version 20120518: 3237 3238 3239 1) ACPICA Core Subsystem: 3240 3241 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is 3242 defined 3243 to block until asynchronous events such as notifies and GPEs have 3244 completed. 3245 Within ACPICA, it is only called before a notify or GPE handler is 3246 removed/uninstalled. It also may be useful for the host OS within related 3247 drivers such as the Embedded Controller driver. See the ACPICA reference 3248 for 3249 additional information. ACPICA BZ 868. 3250 3251 ACPI Tables: Added a new error message for a possible overflow failure 3252 during 3253 the conversion of FADT 32-bit legacy register addresses to internal 3254 common 3255 64- 3256 bit GAS structure representation. The GAS has a one-byte "bit length" 3257 field, 3258 thus limiting the register length to 255 bits. ACPICA BZ 953. 3259 3260 Example Code and Data Size: These are the sizes for the OS-independent 3261 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3262 debug 3263 version of the code includes the debug output trace mechanism and has a 3264 much 3265 larger code and data size. 3266 3267 Previous Release: 3268 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 3269 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 3270 Current Release: 3271 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 3272 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 3273 3274 3275 2) iASL Compiler/Disassembler and Tools: 3276 3277 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL 3278 macro. 3279 This keyword was added late in the ACPI 5.0 release cycle and was not 3280 implemented until now. 3281 3282 Disassembler: Added support for Operation Region externals. Adds missing 3283 support for operation regions that are defined in another table, and 3284 referenced locally via a Field or BankField ASL operator. Now generates 3285 the 3286 correct External statement. 3287 3288 Disassembler: Several additional fixes for the External() statement 3289 generation 3290 related to some ASL operators. Also, order the External() statements 3291 alphabetically in the disassembler output. Fixes the External() 3292 generation 3293 for 3294 the Create* field, Alias, and Scope operators: 3295 1) Create* buffer field operators - fix type mismatch warning on 3296 disassembly 3297 2) Alias - implement missing External support 3298 3) Scope - fix to make sure all necessary externals are emitted. 3299 3300 iASL: Improved pathname support. For include files, merge the prefix 3301 pathname 3302 with the file pathname and eliminate unnecessary components. Convert 3303 backslashes in all pathnames to forward slashes, for readability. Include 3304 file 3305 pathname changes affect both #include and Include() type operators. 3306 3307 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the 3308 end 3309 of a valid line by inserting a newline and then returning the EOF during 3310 the 3311 next call to GetNextLine. Prevents the line from being ignored due to EOF 3312 condition. 3313 3314 iASL: Implemented some changes to enhance the IDE support (-vi option.) 3315 Error 3316 and Warning messages are now correctly recognized for both the source 3317 code 3318 browser and the global error and warning counts. 3319 3320 ---------------------------------------- 3321 20 April 2012. Summary of changes for version 20120420: 3322 3323 3324 1) ACPICA Core Subsystem: 3325 3326 Implemented support for multiple notify handlers. This change adds 3327 support 3328 to 3329 allow multiple system and device notify handlers on Device, Thermal Zone, 3330 and 3331 Processor objects. This can simplify the host OS notification 3332 implementation. 3333 Also re-worked and restructured the entire notify support code to 3334 simplify 3335 handler installation, handler removal, notify event queuing, and notify 3336 dispatch to handler(s). Note: there can still only be two global notify 3337 handlers - one for system notifies and one for device notifies. There are 3338 no 3339 changes to the existing handler install/remove interfaces. Lin Ming, Bob 3340 Moore, Rafael Wysocki. 3341 3342 Fixed a regression in the package repair code where the object reference 3343 count was calculated incorrectly. Regression was introduced in the commit 3344 "Support to add Package wrappers". 3345 3346 Fixed a couple possible memory leaks in the AML parser, in the error 3347 recovery 3348 path. Jesper Juhl, Lin Ming. 3349 3350 Example Code and Data Size: These are the sizes for the OS-independent 3351 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3352 debug version of the code includes the debug output trace mechanism and 3353 has a 3354 much larger code and data size. 3355 3356 Previous Release: 3357 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 3358 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 3359 Current Release: 3360 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 3361 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 3362 3363 3364 2) iASL Compiler/Disassembler and Tools: 3365 3366 iASL: Fixed a problem with the resource descriptor support where the 3367 length 3368 of the StartDependentFn and StartDependentFnNoPrio descriptors were not 3369 included in cumulative descriptor offset, resulting in incorrect values 3370 for 3371 resource tags within resource descriptors appearing after a 3372 StartDependent* 3373 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 3374 3375 iASL and Preprocessor: Implemented full support for the #line directive 3376 to 3377 correctly track original source file line numbers through the .i 3378 preprocessor 3379 output file - for error and warning messages. 3380 3381 iASL: Expand the allowable byte constants for address space IDs. 3382 Previously, 3383 the allowable range was 0x80-0xFF (user-defined spaces), now the range is 3384 0x0A-0xFF to allow for custom and new IDs without changing the compiler. 3385 3386 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 3387 3388 iASL: Add option to completely disable the preprocessor (-Pn). 3389 3390 iASL: Now emit all error/warning messages to standard error (stderr) by 3391 default (instead of the previous stdout). 3392 3393 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). 3394 Update 3395 for resource descriptor offset fix above. Update/cleanup error output 3396 routines. Enable and send iASL errors/warnings to an error logfile 3397 (error.txt). Send all other iASL output to a logfile (compiler.txt). 3398 Fixed 3399 several extraneous "unrecognized operator" messages. 3400 3401 ---------------------------------------- 3402 20 March 2012. Summary of changes for version 20120320: 3403 3404 3405 1) ACPICA Core Subsystem: 3406 3407 Enhanced the sleep/wake interfaces to optionally execute the _GTS method 3408 (Going To Sleep) and the _BFS method (Back From Sleep). Windows 3409 apparently 3410 does not execute these methods, and therefore these methods are often 3411 untested. It has been seen on some systems where the execution of these 3412 methods causes errors and also prevents the machine from entering S5. It 3413 is 3414 therefore suggested that host operating systems do not execute these 3415 methods 3416 by default. In the future, perhaps these methods can be optionally 3417 executed 3418 based on the age of the system and/or what is the newest version of 3419 Windows 3420 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState 3421 and 3422 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 3423 Ming. 3424 3425 Fixed a problem where the length of the local/common FADT was set too 3426 early. 3427 The local FADT table length cannot be set to the common length until the 3428 original length has been examined. There is code that checks the table 3429 length 3430 and sets various fields appropriately. This can affect older machines 3431 with 3432 early FADT versions. For example, this can cause inadvertent writes to 3433 the 3434 CST_CNT register. Julian Anastasov. 3435 3436 Fixed a mapping issue related to a physical table override. Use the 3437 deferred 3438 mapping mechanism for tables loaded via the physical override OSL 3439 interface. 3440 This allows for early mapping before the virtual memory manager is 3441 available. 3442 Thomas Renninger, Bob Moore. 3443 3444 Enhanced the automatic return-object repair code: Repair a common problem 3445 with 3446 predefined methods that are defined to return a variable-length Package 3447 of 3448 sub-objects. If there is only one sub-object, some BIOS ASL code 3449 mistakenly 3450 simply returns the single object instead of a Package with one sub- 3451 object. 3452 This new support will repair this error by wrapping a Package object 3453 around 3454 the original object, creating the correct and expected Package with one 3455 sub- 3456 object. Names that can be repaired in this manner include: _ALR, _CSD, 3457 _HPX, 3458 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 3459 939. 3460 3461 Changed the exception code returned for invalid ACPI paths passed as 3462 parameters to external interfaces such as AcpiEvaluateObject. Was 3463 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 3464 3465 Example Code and Data Size: These are the sizes for the OS-independent 3466 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3467 debug 3468 version of the code includes the debug output trace mechanism and has a 3469 much 3470 larger code and data size. 3471 3472 Previous Release: 3473 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 3474 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 3475 Current Release: 3476 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 3477 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 3478 3479 3480 2) iASL Compiler/Disassembler and Tools: 3481 3482 iASL: Added the infrastructure and initial implementation of a integrated 3483 C- 3484 like preprocessor. This will simplify BIOS development process by 3485 eliminating 3486 the need for a separate preprocessing step during builds. On Windows, it 3487 also 3488 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 3489 features including full #define() macro support are still under 3490 development. 3491 These preprocessor directives are supported: 3492 #define 3493 #elif 3494 #else 3495 #endif 3496 #error 3497 #if 3498 #ifdef 3499 #ifndef 3500 #include 3501 #pragma message 3502 #undef 3503 #warning 3504 In addition, these new command line options are supported: 3505 -D <symbol> Define symbol for preprocessor use 3506 -li Create preprocessed output file (*.i) 3507 -P Preprocess only and create preprocessor output file (*.i) 3508 3509 Table Compiler: Fixed a problem where the equals operator within an 3510 expression 3511 did not work properly. 3512 3513 Updated iASL to use the current versions of Bison/Flex. Updated the 3514 Windows 3515 project file to invoke these tools from the standard location. ACPICA BZ 3516 904. 3517 Versions supported: 3518 Flex for Windows: V2.5.4 3519 Bison for Windows: V2.4.1 3520 3521 ---------------------------------------- 3522 15 February 2012. Summary of changes for version 20120215: 3523 3524 3525 1) ACPICA Core Subsystem: 3526 3527 There have been some major changes to the sleep/wake support code, as 3528 described below (a - e). 3529 3530 a) The AcpiLeaveSleepState has been split into two interfaces, similar to 3531 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 3532 AcpiLeaveSleepStatePrep. This allows the host to perform actions between 3533 the 3534 time the _BFS method is called and the _WAK method is called. NOTE: all 3535 hosts 3536 must update their wake/resume code or else sleep/wake will not work 3537 properly. 3538 Rafael Wysocki. 3539 3540 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the 3541 _WAK 3542 method. Some machines require that the GPEs are enabled before the _WAK 3543 method 3544 is executed. Thomas Renninger. 3545 3546 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) 3547 bit. 3548 Some BIOS code assumes that WAK_STS will be cleared on resume and use it 3549 to 3550 determine whether the system is rebooting or resuming. Matthew Garrett. 3551 3552 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From 3553 Sleep) to 3554 match the ACPI specification requirement. Rafael Wysocki. 3555 3556 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 3557 registers within the V5 FADT. This support adds two new files: 3558 hardware/hwesleep.c implements the support for the new registers. Moved 3559 all 3560 sleep/wake external interfaces to hardware/hwxfsleep.c. 3561 3562 3563 Added a new OSL interface for ACPI table overrides, 3564 AcpiOsPhysicalTableOverride. This interface allows the host to override a 3565 table via a physical address, instead of the logical address required by 3566 AcpiOsTableOverride. This simplifies the host implementation. Initial 3567 implementation by Thomas Renninger. The ACPICA implementation creates a 3568 single 3569 shared function for table overrides that attempts both a logical and a 3570 physical override. 3571 3572 Expanded the OSL memory read/write interfaces to 64-bit data 3573 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 3574 transfer support for GAS register structures passed to AcpiRead and 3575 AcpiWrite. 3576 3577 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a 3578 custom 3579 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) 3580 model. 3581 See the ACPICA reference for details. ACPICA BZ 942. This option removes 3582 about 3583 10% of the code and 5% of the static data, and the following hardware 3584 ACPI 3585 features become unavailable: 3586 PM Event and Control registers 3587 SCI interrupt (and handler) 3588 Fixed Events 3589 General Purpose Events (GPEs) 3590 Global Lock 3591 ACPI PM timer 3592 FACS table (Waking vectors and Global Lock) 3593 3594 Updated the unix tarball directory structure to match the ACPICA git 3595 source 3596 tree. This ensures that the generic unix makefiles work properly (in 3597 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 3598 867. 3599 3600 Updated the return value of the _REV predefined method to integer value 5 3601 to 3602 reflect ACPI 5.0 support. 3603 3604 Moved the external ACPI PM timer interface prototypes to the public 3605 acpixf.h 3606 file where they belong. 3607 3608 Example Code and Data Size: These are the sizes for the OS-independent 3609 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3610 debug 3611 version of the code includes the debug output trace mechanism and has a 3612 much 3613 larger code and data size. 3614 3615 Previous Release: 3616 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 3617 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 3618 Current Release: 3619 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 3620 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 3621 3622 3623 2) iASL Compiler/Disassembler and Tools: 3624 3625 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 3626 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 3627 incorrectly displayed. 3628 3629 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 3630 specification. 3631 3632 ---------------------------------------- 3633 11 January 2012. Summary of changes for version 20120111: 3634 3635 3636 1) ACPICA Core Subsystem: 3637 3638 Implemented a new mechanism to allow host device drivers to check for 3639 address 3640 range conflicts with ACPI Operation Regions. Both SystemMemory and 3641 SystemIO 3642 address spaces are supported. A new external interface, 3643 AcpiCheckAddressRange, 3644 allows drivers to check an address range against the ACPI namespace. See 3645 the 3646 ACPICA reference for additional details. Adds one new file, 3647 utilities/utaddress.c. Lin Ming, Bob Moore. 3648 3649 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep 3650 Control 3651 and 3652 Status registers, update the ACPI 5.0 flags, and update internal data 3653 structures to handle an FADT larger than 256 bytes. The size of the ACPI 3654 5.0 3655 FADT is 268 bytes. 3656 3657 Updated all ACPICA copyrights and signons to 2012. Added the 2012 3658 copyright to 3659 all module headers and signons, including the standard Linux header. This 3660 affects virtually every file in the ACPICA core subsystem, iASL compiler, 3661 and 3662 all ACPICA utilities. 3663 3664 Example Code and Data Size: These are the sizes for the OS-independent 3665 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3666 debug 3667 version of the code includes the debug output trace mechanism and has a 3668 much 3669 larger code and data size. 3670 3671 Previous Release: 3672 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 3673 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 3674 Current Release: 3675 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 3676 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 3677 3678 3679 2) iASL Compiler/Disassembler and Tools: 3680 3681 Disassembler: fixed a problem with the automatic resource tag generation 3682 support. Fixes a problem where the resource tags are inadvertently not 3683 constructed if the table being disassembled contains external references 3684 to 3685 control methods. Moved the actual construction of the tags to after the 3686 final 3687 namespace is constructed (after 2nd parse is invoked due to external 3688 control 3689 method references.) ACPICA BZ 941. 3690 3691 Table Compiler: Make all "generic" operators caseless. These are the 3692 operators 3693 like UINT8, String, etc. Making these caseless improves ease-of-use. 3694 ACPICA BZ 3695 934. 3696 3697 ---------------------------------------- 3698 23 November 2011. Summary of changes for version 20111123: 3699 3700 0) ACPI 5.0 Support: 3701 3702 This release contains full support for the ACPI 5.0 specification, as 3703 summarized below. 3704 3705 Reduced Hardware Support: 3706 ------------------------- 3707 3708 This support allows for ACPI systems without the usual ACPI hardware. 3709 This 3710 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA 3711 will 3712 not attempt to initialize or use any of the usual ACPI hardware. Note, 3713 when 3714 this flag is set, all of the following ACPI hardware is assumed to be not 3715 present and is not initialized or accessed: 3716 3717 General Purpose Events (GPEs) 3718 Fixed Events (PM1a/PM1b and PM Control) 3719 Power Management Timer and Console Buttons (power/sleep) 3720 Real-time Clock Alarm 3721 Global Lock 3722 System Control Interrupt (SCI) 3723 The FACS is assumed to be non-existent 3724 3725 ACPI Tables: 3726 ------------ 3727 3728 All new tables and updates to existing tables are fully supported in the 3729 ACPICA headers (for use by device drivers), the disassembler, and the 3730 iASL 3731 Data Table Compiler. ACPI 5.0 defines these new tables: 3732 3733 BGRT /* Boot Graphics Resource Table */ 3734 DRTM /* Dynamic Root of Trust for Measurement table */ 3735 FPDT /* Firmware Performance Data Table */ 3736 GTDT /* Generic Timer Description Table */ 3737 MPST /* Memory Power State Table */ 3738 PCCT /* Platform Communications Channel Table */ 3739 PMTT /* Platform Memory Topology Table */ 3740 RASF /* RAS Feature table */ 3741 3742 Operation Regions/SpaceIDs: 3743 --------------------------- 3744 3745 All new operation regions are fully supported by the iASL compiler, the 3746 disassembler, and the ACPICA runtime code (for dispatch to region 3747 handlers.) 3748 The new operation region Space IDs are: 3749 3750 GeneralPurposeIo 3751 GenericSerialBus 3752 3753 Resource Descriptors: 3754 --------------------- 3755 3756 All new ASL resource descriptors are fully supported by the iASL 3757 compiler, 3758 the 3759 ASL/AML disassembler, and the ACPICA runtime Resource Manager code 3760 (including 3761 all new predefined resource tags). New descriptors are: 3762 3763 FixedDma 3764 GpioIo 3765 GpioInt 3766 I2cSerialBus 3767 SpiSerialBus 3768 UartSerialBus 3769 3770 ASL/AML Operators, New and Modified: 3771 ------------------------------------ 3772 3773 One new operator is added, the Connection operator, which is used to 3774 associate 3775 a GeneralPurposeIo or GenericSerialBus resource descriptor with 3776 individual 3777 field objects within an operation region. Several new protocols are 3778 associated 3779 with the AccessAs operator. All are fully supported by the iASL compiler, 3780 disassembler, and runtime ACPICA AML interpreter: 3781 3782 Connection // Declare Field Connection 3783 attributes 3784 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 3785 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes 3786 Protocol 3787 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 3788 RawDataBuffer // Data type for Vendor Data 3789 fields 3790 3791 Predefined ASL/AML Objects: 3792 --------------------------- 3793 3794 All new predefined objects/control-methods are supported by the iASL 3795 compiler 3796 and the ACPICA runtime validation/repair (arguments and return values.) 3797 New 3798 predefined names include the following: 3799 3800 Standard Predefined Names (Objects or Control Methods): 3801 _AEI, _CLS, _CPC, _CWS, _DEP, 3802 _DLM, _EVT, _GCP, _CRT, _GWS, 3803 _HRV, _PRE, _PSE, _SRT, _SUB. 3804 3805 Resource Tags (Names used to access individual fields within resource 3806 descriptors): 3807 _DBT, _DPL, _DRS, _END, _FLC, 3808 _IOR, _LIN, _MOD, _PAR, _PHA, 3809 _PIN, _PPI, _POL, _RXL, _SLV, 3810 _SPE, _STB, _TXL, _VEN. 3811 3812 ACPICA External Interfaces: 3813 --------------------------- 3814 3815 Several new interfaces have been defined for use by ACPI-related device 3816 drivers and other host OS services: 3817 3818 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS 3819 to 3820 acquire and release AML mutexes that are defined in the DSDT/SSDT tables 3821 provided by the BIOS. They are intended to be used in conjunction with 3822 the 3823 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 3824 mutual exclusion with the AML code/interpreter. 3825 3826 AcpiGetEventResources: Returns the (formatted) resource descriptors as 3827 defined 3828 by the ACPI 5.0 _AEI object (ACPI Event Information). This object 3829 provides 3830 resource descriptors associated with hardware-reduced platform events, 3831 similar 3832 to the AcpiGetCurrentResources interface. 3833 3834 Operation Region Handlers: For General Purpose IO and Generic Serial Bus 3835 operation regions, information about the Connection() object and any 3836 optional 3837 length information is passed to the region handler within the Context 3838 parameter. 3839 3840 AcpiBufferToResource: This interface converts a raw AML buffer containing 3841 a 3842 resource template or resource descriptor to the ACPI_RESOURCE internal 3843 format 3844 suitable for use by device drivers. Can be used by an operation region 3845 handler 3846 to convert the Connection() buffer object into a ACPI_RESOURCE. 3847 3848 Miscellaneous/Tools/TestSuites: 3849 ------------------------------- 3850 3851 Support for extended _HID names (Four alpha characters instead of three). 3852 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 3853 Support for ACPI 5.0 features in the ASLTS test suite. 3854 Fully updated documentation (ACPICA and iASL reference documents.) 3855 3856 ACPI Table Definition Language: 3857 ------------------------------- 3858 3859 Support for this language was implemented and released as a subsystem of 3860 the 3861 iASL compiler in 2010. (See the iASL compiler User Guide.) 3862 3863 3864 Non-ACPI 5.0 changes for this release: 3865 -------------------------------------- 3866 3867 1) ACPICA Core Subsystem: 3868 3869 Fix a problem with operation region declarations where a failure can 3870 occur 3871 if 3872 the region name and an argument that evaluates to an object (such as the 3873 region address) are in different namespace scopes. Lin Ming, ACPICA BZ 3874 937. 3875 3876 Do not abort an ACPI table load if an invalid space ID is found within. 3877 This 3878 will be caught later if the offending method is executed. ACPICA BZ 925. 3879 3880 Fixed an issue with the FFixedHW space ID where the ID was not always 3881 recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 3882 3883 Fixed a problem with the 32-bit generation of the unix-specific OSL 3884 (osunixxf.c). Lin Ming, ACPICA BZ 936. 3885 3886 Several changes made to enable generation with the GCC 4.6 compiler. 3887 ACPICA BZ 3888 935. 3889 3890 New error messages: Unsupported I/O requests (not 8/16/32 bit), and 3891 Index/Bank 3892 field registers out-of-range. 3893 3894 2) iASL Compiler/Disassembler and Tools: 3895 3896 iASL: Implemented the __PATH__ operator, which returns the full pathname 3897 of 3898 the current source file. 3899 3900 AcpiHelp: Automatically display expanded keyword information for all ASL 3901 operators. 3902 3903 Debugger: Add "Template" command to disassemble/dump resource template 3904 buffers. 3905 3906 Added a new master script to generate and execute the ASLTS test suite. 3907 Automatically handles 32- and 64-bit generation. See tests/aslts.sh 3908 3909 iASL: Fix problem with listing generation during processing of the 3910 Switch() 3911 operator where AML listing was disabled until the entire Switch block was 3912 completed. 3913 3914 iASL: Improve support for semicolon statement terminators. Fix "invalid 3915 character" message for some cases when the semicolon is used. Semicolons 3916 are 3917 now allowed after every <Term> grammar element. ACPICA BZ 927. 3918 3919 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 3920 923. 3921 3922 Disassembler: Fix problem with disassembly of the DataTableRegion 3923 operator 3924 where an inadvertent "Unhandled deferred opcode" message could be 3925 generated. 3926 3927 3) Example Code and Data Size 3928 3929 These are the sizes for the OS-independent acpica.lib produced by the 3930 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 3931 includes the debug output trace mechanism and has a much larger code and 3932 data 3933 size. 3934 3935 Previous Release: 3936 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3937 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3938 Current Release: 3939 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 3940 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 3941 3942 ---------------------------------------- 3943 22 September 2011. Summary of changes for version 20110922: 3944 3945 0) ACPI 5.0 News: 3946 3947 Support for ACPI 5.0 in ACPICA has been underway for several months and 3948 will 3949 be released at the same time that ACPI 5.0 is officially released. 3950 3951 The ACPI 5.0 specification is on track for release in the next few 3952 months. 3953 3954 1) ACPICA Core Subsystem: 3955 3956 Fixed a problem where the maximum sleep time for the Sleep() operator was 3957 intended to be limited to two seconds, but was inadvertently limited to 3958 20 3959 seconds instead. 3960 3961 Linux and Unix makefiles: Added header file dependencies to ensure 3962 correct 3963 generation of ACPICA core code and utilities. Also simplified the 3964 makefiles 3965 considerably through the use of the vpath variable to specify search 3966 paths. 3967 ACPICA BZ 924. 3968 3969 2) iASL Compiler/Disassembler and Tools: 3970 3971 iASL: Implemented support to check the access length for all fields 3972 created to 3973 access named Resource Descriptor fields. For example, if a resource field 3974 is 3975 defined to be two bits, a warning is issued if a CreateXxxxField() is 3976 used 3977 with an incorrect bit length. This is implemented for all current 3978 resource 3979 descriptor names. ACPICA BZ 930. 3980 3981 Disassembler: Fixed a byte ordering problem with the output of 24-bit and 3982 56- 3983 bit integers. 3984 3985 iASL: Fixed a couple of issues associated with variable-length package 3986 objects. 1) properly handle constants like One, Ones, Zero -- do not make 3987 a 3988 VAR_PACKAGE when these are used as a package length. 2) Allow the 3989 VAR_PACKAGE 3990 opcode (in addition to PACKAGE) when validating object types for 3991 predefined 3992 names. 3993 3994 iASL: Emit statistics for all output files (instead of just the ASL input 3995 and 3996 AML output). Includes listings, hex files, etc. 3997 3998 iASL: Added -G option to the table compiler to allow the compilation of 3999 custom 4000 ACPI tables. The only part of a table that is required is the standard 4001 36- 4002 byte 4003 ACPI header. 4004 4005 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA 4006 headers), 4007 which also adds correct 64-bit support. Also, now all output filenames 4008 are 4009 completely lower case. 4010 4011 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 4012 loading table files. A warning is issued for any such tables. The only 4013 exception is an FADT. This also fixes a possible fault when attempting to 4014 load 4015 non-AML tables. ACPICA BZ 932. 4016 4017 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where 4018 a 4019 missing table terminator could cause a fault when using the -p option. 4020 4021 AcpiSrc: Fixed a possible divide-by-zero fault when generating file 4022 statistics. 4023 4024 3) Example Code and Data Size 4025 4026 These are the sizes for the OS-independent acpica.lib produced by the 4027 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 4028 includes the debug output trace mechanism and has a much larger code and 4029 data 4030 size. 4031 4032 Previous Release (VC 9.0): 4033 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 4034 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4035 Current Release (VC 9.0): 4036 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 4037 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4038 4039 4040 ---------------------------------------- 4041 23 June 2011. Summary of changes for version 20110623: 4042 4043 1) ACPI CA Core Subsystem: 4044 4045 Updated the predefined name repair mechanism to not attempt repair of a 4046 _TSS 4047 return object if a _PSS object is present. We can only sort the _TSS 4048 return 4049 package if there is no _PSS within the same scope. This is because if 4050 _PSS 4051 is 4052 present, the ACPI specification dictates that the _TSS Power Dissipation 4053 field 4054 is to be ignored, and therefore some BIOSs leave garbage values in the 4055 _TSS 4056 Power field(s). In this case, it is best to just return the _TSS package 4057 as- 4058 is. Reported by, and fixed with assistance from Fenghua Yu. 4059 4060 Added an option to globally disable the control method return value 4061 validation 4062 and repair. This runtime option can be used to disable return value 4063 repair 4064 if 4065 this is causing a problem on a particular machine. Also added an option 4066 to 4067 AcpiExec (-dr) to set this disable flag. 4068 4069 All makefiles and project files: Major changes to improve generation of 4070 ACPICA 4071 tools. ACPICA BZ 912: 4072 Reduce default optimization levels to improve compatibility 4073 For Linux, add strict-aliasing=0 for gcc 4 4074 Cleanup and simplify use of command line defines 4075 Cleanup multithread library support 4076 Improve usage messages 4077 4078 Linux-specific header: update handling of THREAD_ID and pthread. For the 4079 32- 4080 bit case, improve casting to eliminate possible warnings, especially with 4081 the 4082 acpica tools. 4083 4084 Example Code and Data Size: These are the sizes for the OS-independent 4085 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4086 debug 4087 version of the code includes the debug output trace mechanism and has a 4088 much 4089 larger code and data size. 4090 4091 Previous Release (VC 9.0): 4092 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 4093 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4094 Current Release (VC 9.0): 4095 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 4096 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4097 4098 2) iASL Compiler/Disassembler and Tools: 4099 4100 With this release, a new utility named "acpihelp" has been added to the 4101 ACPICA 4102 package. This utility summarizes the ACPI specification chapters for the 4103 ASL 4104 and AML languages. It generates under Linux/Unix as well as Windows, and 4105 provides the following functionality: 4106 Find/display ASL operator(s) -- with description and syntax. 4107 Find/display ASL keyword(s) -- with exact spelling and descriptions. 4108 Find/display ACPI predefined name(s) -- with description, number 4109 of arguments, and the return value data type. 4110 Find/display AML opcode name(s) -- with opcode, arguments, and 4111 grammar. 4112 Decode/display AML opcode -- with opcode name, arguments, and 4113 grammar. 4114 4115 Service Layers: Make multi-thread support configurable. Conditionally 4116 compile 4117 the multi-thread support so that threading libraries will not be linked 4118 if 4119 not 4120 necessary. The only tool that requires multi-thread support is AcpiExec. 4121 4122 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions 4123 of 4124 Bison appear to want the interface to yyerror to be a const char * (or at 4125 least this is a problem when generating iASL on some systems.) ACPICA BZ 4126 923 4127 Pierre Lejeune. 4128 4129 Tools: Fix for systems where O_BINARY is not defined. Only used for 4130 Windows 4131 versions of the tools. 4132 4133 ---------------------------------------- 4134 27 May 2011. Summary of changes for version 20110527: 4135 4136 1) ACPI CA Core Subsystem: 4137 4138 ASL Load() operator: Reinstate most restrictions on the incoming ACPI 4139 table 4140 signature. Now, only allow SSDT, OEMx, and a null signature. History: 4141 1) Originally, we checked the table signature for "SSDT" or "PSDT". 4142 (PSDT is now obsolete.) 4143 2) We added support for OEMx tables, signature "OEM" plus a fourth 4144 "don't care" character. 4145 3) Valid tables were encountered with a null signature, so we just 4146 gave up on validating the signature, (05/2008). 4147 4) We encountered non-AML tables such as the MADT, which caused 4148 interpreter errors and kernel faults. So now, we once again allow 4149 only SSDT, OEMx, and now, also a null signature. (05/2011). 4150 4151 Added the missing _TDL predefined name to the global name list in order 4152 to 4153 enable validation. Affects both the core ACPICA code and the iASL 4154 compiler. 4155 4156 Example Code and Data Size: These are the sizes for the OS-independent 4157 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4158 debug 4159 version of the code includes the debug output trace mechanism and has a 4160 much 4161 larger code and data size. 4162 4163 Previous Release (VC 9.0): 4164 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 4165 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 4166 Current Release (VC 9.0): 4167 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 4168 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4169 4170 2) iASL Compiler/Disassembler and Tools: 4171 4172 Debugger/AcpiExec: Implemented support for "complex" method arguments on 4173 the 4174 debugger command line. This adds support beyond simple integers -- 4175 including 4176 Strings, Buffers, and Packages. Includes support for nested packages. 4177 Increased the default command line buffer size to accommodate these 4178 arguments. 4179 See the ACPICA reference for details and syntax. ACPICA BZ 917. 4180 4181 Debugger/AcpiExec: Implemented support for "default" method arguments for 4182 the 4183 Execute/Debug command. Now, the debugger will always invoke a control 4184 method 4185 with the required number of arguments -- even if the command line 4186 specifies 4187 none or insufficient arguments. It uses default integer values for any 4188 missing 4189 arguments. Also fixes a bug where only six method arguments maximum were 4190 supported instead of the required seven. 4191 4192 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine 4193 and 4194 also return status in order to prevent buffer overruns. See the ACPICA 4195 reference for details and syntax. ACPICA BZ 921 4196 4197 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 4198 makefiles to simplify support for the two different but similar parser 4199 generators, bison and yacc. 4200 4201 Updated the generic unix makefile for gcc 4. The default gcc version is 4202 now 4203 expected to be 4 or greater, since options specific to gcc 4 are used. 4204 4205 ---------------------------------------- 4206 13 April 2011. Summary of changes for version 20110413: 4207 4208 1) ACPI CA Core Subsystem: 4209 4210 Implemented support to execute a so-called "orphan" _REG method under the 4211 EC 4212 device. This change will force the execution of a _REG method underneath 4213 the 4214 EC 4215 device even if there is no corresponding operation region of type 4216 EmbeddedControl. Fixes a problem seen on some machines and apparently is 4217 compatible with Windows behavior. ACPICA BZ 875. 4218 4219 Added more predefined methods that are eligible for automatic NULL 4220 package 4221 element removal. This change adds another group of predefined names to 4222 the 4223 list 4224 of names that can be repaired by having NULL package elements dynamically 4225 removed. This group are those methods that return a single variable- 4226 length 4227 package containing simple data types such as integers, buffers, strings. 4228 This 4229 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, 4230 _PSL, 4231 _Sx, 4232 and _TZD. ACPICA BZ 914. 4233 4234 Split and segregated all internal global lock functions to a new file, 4235 evglock.c. 4236 4237 Updated internal address SpaceID for DataTable regions. Moved this 4238 internal 4239 space 4240 id in preparation for ACPI 5.0 changes that will include some new space 4241 IDs. 4242 This 4243 change should not affect user/host code. 4244 4245 Example Code and Data Size: These are the sizes for the OS-independent 4246 acpica.lib 4247 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 4248 version of 4249 the code includes the debug output trace mechanism and has a much larger 4250 code 4251 and 4252 data size. 4253 4254 Previous Release (VC 9.0): 4255 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 4256 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 4257 Current Release (VC 9.0): 4258 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 4259 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 4260 4261 2) iASL Compiler/Disassembler and Tools: 4262 4263 iASL/DTC: Major update for new grammar features. Allow generic data types 4264 in 4265 custom ACPI tables. Field names are now optional. Any line can be split 4266 to 4267 multiple lines using the continuation char (\). Large buffers now use 4268 line- 4269 continuation character(s) and no colon on the continuation lines. See the 4270 grammar 4271 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob 4272 Moore. 4273 4274 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return 4275 statements. 4276 Since the parser stuffs a "zero" as the return value for these statements 4277 (due 4278 to 4279 the underlying AML grammar), they were seen as "return with value" by the 4280 iASL 4281 semantic checking. They are now seen correctly as "null" return 4282 statements. 4283 4284 iASL: Check if a_REG declaration has a corresponding Operation Region. 4285 Adds a 4286 check for each _REG to ensure that there is in fact a corresponding 4287 operation 4288 region declaration in the same scope. If not, the _REG method is not very 4289 useful 4290 since it probably won't be executed. ACPICA BZ 915. 4291 4292 iASL/DTC: Finish support for expression evaluation. Added a new 4293 expression 4294 parser 4295 that implements c-style operator precedence and parenthesization. ACPICA 4296 bugzilla 4297 908. 4298 4299 Disassembler/DTC: Remove support for () and <> style comments in data 4300 tables. 4301 Now 4302 that DTC has full expression support, we don't want to have comment 4303 strings 4304 that 4305 start with a parentheses or a less-than symbol. Now, only the standard /* 4306 and 4307 // 4308 comments are supported, as well as the bracket [] comments. 4309 4310 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 4311 "unusual" 4312 headers in the acpidump file. Update the header validation to support 4313 these 4314 tables. Problem introduced in previous AcpiXtract version in the change 4315 to 4316 support "wrong checksum" error messages emitted by acpidump utility. 4317 4318 iASL: Add a * option to generate all template files (as a synonym for 4319 ALL) 4320 as 4321 in 4322 "iasl -T *" or "iasl -T ALL". 4323 4324 iASL/DTC: Do not abort compiler on fatal errors. We do not want to 4325 completely 4326 abort the compiler on "fatal" errors, simply should abort the current 4327 compile. 4328 This allows multiple compiles with a single (possibly wildcard) compiler 4329 invocation. 4330 4331 ---------------------------------------- 4332 16 March 2011. Summary of changes for version 20110316: 4333 4334 1) ACPI CA Core Subsystem: 4335 4336 Fixed a problem caused by a _PRW method appearing at the namespace root 4337 scope 4338 during the setup of wake GPEs. A fault could occur if a _PRW directly 4339 under 4340 the 4341 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 4342 4343 Implemented support for "spurious" Global Lock interrupts. On some 4344 systems, a 4345 global lock interrupt can occur without the pending flag being set. Upon 4346 a 4347 GL 4348 interrupt, we now ensure that a thread is actually waiting for the lock 4349 before 4350 signaling GL availability. Rafael Wysocki, Bob Moore. 4351 4352 Example Code and Data Size: These are the sizes for the OS-independent 4353 acpica.lib 4354 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 4355 version of 4356 the code includes the debug output trace mechanism and has a much larger 4357 code 4358 and 4359 data size. 4360 4361 Previous Release (VC 9.0): 4362 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 4363 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 4364 Current Release (VC 9.0): 4365 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 4366 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 4367 4368 2) iASL Compiler/Disassembler and Tools: 4369 4370 Implemented full support for the "SLIC" ACPI table. Includes support in 4371 the 4372 header files, disassembler, table compiler, and template generator. Bob 4373 Moore, 4374 Lin Ming. 4375 4376 AcpiXtract: Correctly handle embedded comments and messages from 4377 AcpiDump. 4378 Apparently some or all versions of acpidump will occasionally emit a 4379 comment 4380 like 4381 "Wrong checksum", etc., into the dump file. This was causing problems for 4382 AcpiXtract. ACPICA BZ 905. 4383 4384 iASL: Fix the Linux makefile by removing an inadvertent double file 4385 inclusion. 4386 ACPICA BZ 913. 4387 4388 AcpiExec: Update installation of operation region handlers. Install one 4389 handler 4390 for a user-defined address space. This is used by the ASL test suite 4391 (ASLTS). 4392 4393 ---------------------------------------- 4394 11 February 2011. Summary of changes for version 20110211: 4395 4396 1) ACPI CA Core Subsystem: 4397 4398 Added a mechanism to defer _REG methods for some early-installed 4399 handlers. 4400 Most user handlers should be installed before call to 4401 AcpiEnableSubsystem. 4402 However, Event handlers and region handlers should be installed after 4403 AcpiInitializeObjects. Override handlers for the "default" regions should 4404 be 4405 installed early, however. This change executes all _REG methods for the 4406 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 4407 chicken/egg issues between them. ACPICA BZ 848. 4408 4409 Implemented an optimization for GPE detection. This optimization will 4410 simply 4411 ignore GPE registers that contain no enabled GPEs -- there is no need to 4412 read the register since this information is available internally. This 4413 becomes more important on machines with a large GPE space. ACPICA 4414 bugzilla 4415 884. Lin Ming. Suggestion from Joe Liu. 4416 4417 Removed all use of the highly unreliable FADT revision field. The 4418 revision 4419 number in the FADT has been found to be completely unreliable and cannot 4420 be 4421 trusted. Only the actual table length can be used to infer the version. 4422 This 4423 change updates the ACPICA core and the disassembler so that both no 4424 longer 4425 even look at the FADT version and instead depend solely upon the FADT 4426 length. 4427 4428 Fix an unresolved name issue for the no-debug and no-error-message source 4429 generation cases. The _AcpiModuleName was left undefined in these cases, 4430 but 4431 it is actually needed as a parameter to some interfaces. Define 4432 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 4433 4434 Split several large files (makefiles and project files updated) 4435 utglobal.c -> utdecode.c 4436 dbcomds.c -> dbmethod.c dbnames.c 4437 dsopcode.c -> dsargs.c dscontrol.c 4438 dsload.c -> dsload2.c 4439 aslanalyze.c -> aslbtypes.c aslwalks.c 4440 4441 Example Code and Data Size: These are the sizes for the OS-independent 4442 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4443 debug version of the code includes the debug output trace mechanism and 4444 has 4445 a much larger code and data size. 4446 4447 Previous Release (VC 9.0): 4448 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 4449 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 4450 Current Release (VC 9.0): 4451 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 4452 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 4453 4454 2) iASL Compiler/Disassembler and Tools: 4455 4456 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 4457 These are useful C-style macros with the standard definitions. ACPICA 4458 bugzilla 898. 4459 4460 iASL/DTC: Added support for integer expressions and labels. Support for 4461 full 4462 expressions for all integer fields in all ACPI tables. Support for labels 4463 in 4464 "generic" portions of tables such as UEFI. See the iASL reference manual. 4465 4466 Debugger: Added a command to display the status of global handlers. The 4467 "handlers" command will display op region, fixed event, and miscellaneous 4468 global handlers. installation status -- and for op regions, whether 4469 default 4470 or user-installed handler will be used. 4471 4472 iASL: Warn if reserved method incorrectly returns a value. Many 4473 predefined 4474 names are defined such that they do not return a value. If implemented as 4475 a 4476 method, issue a warning if such a name explicitly returns a value. ACPICA 4477 Bugzilla 855. 4478 4479 iASL: Added detection of GPE method name conflicts. Detects a conflict 4480 where 4481 there are two GPE methods of the form _Lxy and _Exy in the same scope. 4482 (For 4483 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 4484 4485 iASL/DTC: Fixed a couple input scanner issues with comments and line 4486 numbers. Comment remover could get confused and miss a comment ending. 4487 Fixed 4488 a problem with line counter maintenance. 4489 4490 iASL/DTC: Reduced the severity of some errors from fatal to error. There 4491 is 4492 no need to abort on simple errors within a field definition. 4493 4494 Debugger: Simplified the output of the help command. All help output now 4495 in 4496 a single screen, instead of help subcommands. ACPICA Bugzilla 897. 4497 4498 ---------------------------------------- 4499 12 January 2011. Summary of changes for version 20110112: 4500 4501 1) ACPI CA Core Subsystem: 4502 4503 Fixed a race condition between method execution and namespace walks that 4504 can 4505 possibly cause a fault. The problem was apparently introduced in version 4506 20100528 as a result of a performance optimization that reduces the 4507 number 4508 of 4509 namespace walks upon method exit by using the delete_namespace_subtree 4510 function instead of the delete_namespace_by_owner function used 4511 previously. 4512 Bug is a missing namespace lock in the delete_namespace_subtree function. 4513 dana.myers (a] oracle.com 4514 4515 Fixed several issues and a possible fault with the automatic "serialized" 4516 method support. History: This support changes a method to "serialized" on 4517 the 4518 fly if the method generates an AE_ALREADY_EXISTS error, indicating the 4519 possibility that it cannot handle reentrancy. This fix repairs a couple 4520 of 4521 issues seen in the field, especially on machines with many cores: 4522 4523 1) Delete method children only upon the exit of the last thread, 4524 so as to not delete objects out from under other running threads 4525 (and possibly causing a fault.) 4526 2) Set the "serialized" bit for the method only upon the exit of the 4527 Last thread, so as to not cause deadlock when running threads 4528 attempt to exit. 4529 3) Cleanup the use of the AML "MethodFlags" and internal method flags 4530 so that there is no longer any confusion between the two. 4531 4532 Lin Ming, Bob Moore. Reported by dana.myers (a] oracle.com. 4533 4534 Debugger: Now lock the namespace for duration of a namespace dump. 4535 Prevents 4536 issues if the namespace is changing dynamically underneath the debugger. 4537 Especially affects temporary namespace nodes, since the debugger displays 4538 these also. 4539 4540 Updated the ordering of include files. The ACPICA headers should appear 4541 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can 4542 set 4543 any necessary compiler-specific defines, etc. Affects the ACPI-related 4544 tools 4545 and utilities. 4546 4547 Updated all ACPICA copyrights and signons to 2011. Added the 2011 4548 copyright 4549 to all module headers and signons, including the Linux header. This 4550 affects 4551 virtually every file in the ACPICA core subsystem, iASL compiler, and all 4552 utilities. 4553 4554 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 4555 project files for VC++ 6.0 are now obsolete. New project files can be 4556 found 4557 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 4558 details. 4559 4560 Example Code and Data Size: These are the sizes for the OS-independent 4561 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4562 debug version of the code includes the debug output trace mechanism and 4563 has a 4564 much larger code and data size. 4565 4566 Previous Release (VC 6.0): 4567 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 4568 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 4569 Current Release (VC 9.0): 4570 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 4571 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 4572 4573 2) iASL Compiler/Disassembler and Tools: 4574 4575 iASL: Added generic data types to the Data Table compiler. Add "generic" 4576 data 4577 types such as UINT32, String, Unicode, etc., to simplify the generation 4578 of 4579 platform-defined tables such as UEFI. Lin Ming. 4580 4581 iASL: Added listing support for the Data Table Compiler. Adds listing 4582 support 4583 (-l) to display actual binary output for each line of input code. 4584 4585 ---------------------------------------- 4586 09 December 2010. Summary of changes for version 20101209: 4587 4588 1) ACPI CA Core Subsystem: 4589 4590 Completed the major overhaul of the GPE support code that was begun in 4591 July 4592 2010. Major features include: removal of _PRW execution in ACPICA (host 4593 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 4594 changes to existing interfaces, simplification of GPE handler operation, 4595 and 4596 a handful of new interfaces: 4597 4598 AcpiUpdateAllGpes 4599 AcpiFinishGpe 4600 AcpiSetupGpeForWake 4601 AcpiSetGpeWakeMask 4602 One new file, evxfgpe.c to consolidate all external GPE interfaces. 4603 4604 See the ACPICA Programmer Reference for full details and programming 4605 information. See the new section 4.4 "General Purpose Event (GPE) 4606 Support" 4607 for a full overview, and section 8.7 "ACPI General Purpose Event 4608 Management" 4609 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin 4610 Ming, 4611 Bob Moore, Rafael Wysocki. 4612 4613 Implemented a new GPE feature for Windows compatibility, the "Implicit 4614 Wake 4615 GPE Notify". This feature will automatically issue a Notify(2) on a 4616 device 4617 when a Wake GPE is received if there is no corresponding GPE method or 4618 handler. ACPICA BZ 870. 4619 4620 Fixed a problem with the Scope() operator during table parse and load 4621 phase. 4622 During load phase (table load or method execution), the scope operator 4623 should 4624 not enter the target into the namespace. Instead, it should open a new 4625 scope 4626 at the target location. Linux BZ 19462, ACPICA BZ 882. 4627 4628 Example Code and Data Size: These are the sizes for the OS-independent 4629 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4630 debug version of the code includes the debug output trace mechanism and 4631 has a 4632 much larger code and data size. 4633 4634 Previous Release: 4635 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 4636 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 4637 Current Release: 4638 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4639 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4640 4641 2) iASL Compiler/Disassembler and Tools: 4642 4643 iASL: Relax the alphanumeric restriction on _CID strings. These strings 4644 are 4645 "bus-specific" per the ACPI specification, and therefore any characters 4646 are 4647 acceptable. The only checks that can be performed are for a null string 4648 and 4649 perhaps for a leading asterisk. ACPICA BZ 886. 4650 4651 iASL: Fixed a problem where a syntax error that caused a premature EOF 4652 condition on the source file emitted a very confusing error message. The 4653 premature EOF is now detected correctly. ACPICA BZ 891. 4654 4655 Disassembler: Decode the AccessSize within a Generic Address Structure 4656 (byte 4657 access, word access, etc.) Note, this field does not allow arbitrary bit 4658 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 4659 4660 New: AcpiNames utility - Example namespace dump utility. Shows an example 4661 of 4662 ACPICA configuration for a minimal namespace dump utility. Uses table and 4663 namespace managers, but no AML interpreter. Does not add any 4664 functionality 4665 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 4666 partition and configure ACPICA. ACPICA BZ 883. 4667 4668 AML Debugger: Increased the debugger buffer size for method return 4669 objects. 4670 Was 4K, increased to 16K. Also enhanced error messages for debugger 4671 method 4672 execution, including the buffer overflow case. 4673 4674 ---------------------------------------- 4675 13 October 2010. Summary of changes for version 20101013: 4676 4677 1) ACPI CA Core Subsystem: 4678 4679 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, 4680 now 4681 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 4682 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 4683 4684 Changed the type of the predefined namespace object _TZ from ThermalZone 4685 to 4686 Device. This was found to be confusing to the host software that 4687 processes 4688 the various thermal zones, since _TZ is not really a ThermalZone. 4689 However, 4690 a 4691 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 4692 Zhang. 4693 4694 Added Windows Vista SP2 to the list of supported _OSI strings. The actual 4695 string is "Windows 2006 SP2". 4696 4697 Eliminated duplicate code in AcpiUtExecute* functions. Now that the 4698 nsrepair 4699 code automatically repairs _HID-related strings, this type of code is no 4700 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 4701 878. 4702 4703 Example Code and Data Size: These are the sizes for the OS-independent 4704 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4705 debug version of the code includes the debug output trace mechanism and 4706 has a 4707 much larger code and data size. 4708 4709 Previous Release: 4710 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4711 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4712 Current Release: 4713 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4714 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4715 4716 2) iASL Compiler/Disassembler and Tools: 4717 4718 iASL: Implemented additional compile-time validation for _HID strings. 4719 The 4720 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the 4721 length 4722 of 4723 the string must be exactly seven or eight characters. For both _HID and 4724 _CID 4725 strings, all characters must be alphanumeric. ACPICA BZ 874. 4726 4727 iASL: Allow certain "null" resource descriptors. Some BIOS code creates 4728 descriptors that are mostly or all zeros, with the expectation that they 4729 will 4730 be filled in at runtime. iASL now allows this as long as there is a 4731 "resource 4732 tag" (name) associated with the descriptor, which gives the ASL a handle 4733 needed to modify the descriptor. ACPICA BZ 873. 4734 4735 Added single-thread support to the generic Unix application OSL. 4736 Primarily 4737 for iASL support, this change removes the use of semaphores in the 4738 single- 4739 threaded ACPICA tools/applications - increasing performance. The 4740 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 4741 option. ACPICA BZ 879. 4742 4743 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and 4744 support 4745 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 4746 4747 iASL: Moved all compiler messages to a new file, aslmessages.h. 4748 4749 ---------------------------------------- 4750 15 September 2010. Summary of changes for version 20100915: 4751 4752 1) ACPI CA Core Subsystem: 4753 4754 Removed the AcpiOsDerivePciId OSL interface. The various host 4755 implementations 4756 of this function were not OS-dependent and are now obsolete and can be 4757 removed from all host OSLs. This function has been replaced by 4758 AcpiHwDerivePciId, which is now part of the ACPICA core code. 4759 AcpiHwDerivePciId has been implemented without recursion. Adds one new 4760 module, hwpci.c. ACPICA BZ 857. 4761 4762 Implemented a dynamic repair for _HID and _CID strings. The following 4763 problems are now repaired at runtime: 1) Remove a leading asterisk in the 4764 string, and 2) the entire string is uppercased. Both repairs are in 4765 accordance with the ACPI specification and will simplify host driver 4766 code. 4767 ACPICA BZ 871. 4768 4769 The ACPI_THREAD_ID type is no longer configurable, internally it is now 4770 always UINT64. This simplifies the ACPICA code, especially any printf 4771 output. 4772 UINT64 is the only common data type for all thread_id types across all 4773 operating systems. It is now up to the host OSL to cast the native 4774 thread_id 4775 type to UINT64 before returning the value to ACPICA (via 4776 AcpiOsGetThreadId). 4777 Lin Ming, Bob Moore. 4778 4779 Added the ACPI_INLINE type to enhance the ACPICA configuration. The 4780 "inline" 4781 keyword is not standard across compilers, and this type allows inline to 4782 be 4783 configured on a per-compiler basis. Lin Ming. 4784 4785 Made the system global AcpiGbl_SystemAwakeAndRunning publically 4786 available. 4787 Added an extern for this boolean in acpixf.h. Some hosts utilize this 4788 value 4789 during suspend/restore operations. ACPICA BZ 869. 4790 4791 All code that implements error/warning messages with the "ACPI:" prefix 4792 has 4793 been moved to a new module, utxferror.c. 4794 4795 The UINT64_OVERLAY was moved to utmath.c, which is the only module where 4796 it 4797 is used. ACPICA BZ 829. Lin Ming, Bob Moore. 4798 4799 Example Code and Data Size: These are the sizes for the OS-independent 4800 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4801 debug version of the code includes the debug output trace mechanism and 4802 has a 4803 much larger code and data size. 4804 4805 Previous Release: 4806 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 4807 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 4808 Current Release: 4809 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4810 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4811 4812 2) iASL Compiler/Disassembler and Tools: 4813 4814 iASL/Disassembler: Write ACPI errors to stderr instead of the output 4815 file. 4816 This keeps the output files free of random error messages that may 4817 originate 4818 from within the namespace/interpreter code. Used this opportunity to 4819 merge 4820 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 4821 866. Lin Ming, Bob Moore. 4822 4823 Tools: update some printfs for ansi warnings on size_t. Handle width 4824 change 4825 of size_t on 32-bit versus 64-bit generations. Lin Ming. 4826 4827 ---------------------------------------- 4828 06 August 2010. Summary of changes for version 20100806: 4829 4830 1) ACPI CA Core Subsystem: 4831 4832 Designed and implemented a new host interface to the _OSI support code. 4833 This 4834 will allow the host to dynamically add or remove multiple _OSI strings, 4835 as 4836 well as install an optional handler that is called for each _OSI 4837 invocation. 4838 Also added a new AML debugger command, 'osi' to display and modify the 4839 global 4840 _OSI string table, and test support in the AcpiExec utility. See the 4841 ACPICA 4842 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 4843 New Functions: 4844 AcpiInstallInterface - Add an _OSI string. 4845 AcpiRemoveInterface - Delete an _OSI string. 4846 AcpiInstallInterfaceHandler - Install optional _OSI handler. 4847 Obsolete Functions: 4848 AcpiOsValidateInterface - no longer used. 4849 New Files: 4850 source/components/utilities/utosi.c 4851 4852 Re-introduced the support to enable multi-byte transfers for Embedded 4853 Controller (EC) operation regions. A reported problem was found to be a 4854 bug 4855 in the host OS, not in the multi-byte support. Previously, the maximum 4856 data 4857 size passed to the EC operation region handler was a single byte. There 4858 are 4859 often EC Fields larger than one byte that need to be transferred, and it 4860 is 4861 useful for the EC driver to lock these as a single transaction. This 4862 change 4863 enables single transfers larger than 8 bits. This effectively changes the 4864 access to the EC space from ByteAcc to AnyAcc, and will probably require 4865 changes to the host OS Embedded Controller driver to enable 16/32/64/256- 4866 bit 4867 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 4868 4869 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 4870 prototype in acpiosxf.h had the output value pointer as a (void *). 4871 It should be a (UINT64 *). This may affect some host OSL code. 4872 4873 Fixed a couple problems with the recently modified Linux makefiles for 4874 iASL 4875 and AcpiExec. These new makefiles place the generated object files in the 4876 local directory so that there can be no collisions between the files that 4877 are 4878 shared between them that are compiled with different options. 4879 4880 Example Code and Data Size: These are the sizes for the OS-independent 4881 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4882 debug version of the code includes the debug output trace mechanism and 4883 has a 4884 much larger code and data size. 4885 4886 Previous Release: 4887 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4888 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 4889 Current Release: 4890 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 4891 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 4892 4893 2) iASL Compiler/Disassembler and Tools: 4894 4895 iASL/Disassembler: Added a new option (-da, "disassemble all") to load 4896 the 4897 namespace from and disassemble an entire group of AML files. Useful for 4898 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) 4899 and 4900 disassembling with one simple command. ACPICA BZ 865. Lin Ming. 4901 4902 iASL: Allow multiple invocations of -e option. This change allows 4903 multiple 4904 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 4905 834. 4906 Lin Ming. 4907 4908 ---------------------------------------- 4909 02 July 2010. Summary of changes for version 20100702: 4910 4911 1) ACPI CA Core Subsystem: 4912 4913 Implemented several updates to the recently added GPE reference count 4914 support. The model for "wake" GPEs is changing to give the host OS 4915 complete 4916 control of these GPEs. Eventually, the ACPICA core will not execute any 4917 _PRW 4918 methods, since the host already must execute them. Also, additional 4919 changes 4920 were made to help ensure that the reference counts are kept in proper 4921 synchronization with reality. Rafael J. Wysocki. 4922 4923 1) Ensure that GPEs are not enabled twice during initialization. 4924 2) Ensure that GPE enable masks stay in sync with the reference count. 4925 3) Do not inadvertently enable GPEs when writing GPE registers. 4926 4) Remove the internal wake reference counter and add new AcpiGpeWakeup 4927 interface. This interface will set or clear individual GPEs for wakeup. 4928 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These 4929 interfaces 4930 are now used for "runtime" GPEs only. 4931 4932 Changed the behavior of the GPE install/remove handler interfaces. The 4933 GPE 4934 is 4935 no longer disabled during this process, as it was found to cause problems 4936 on 4937 some machines. Rafael J. Wysocki. 4938 4939 Reverted a change introduced in version 20100528 to enable Embedded 4940 Controller multi-byte transfers. This change was found to cause problems 4941 with 4942 Index Fields and possibly Bank Fields. It will be reintroduced when these 4943 problems have been resolved. 4944 4945 Fixed a problem with references to Alias objects within Package Objects. 4946 A 4947 reference to an Alias within the definition of a Package was not always 4948 resolved properly. Aliases to objects like Processors, Thermal zones, 4949 etc. 4950 were resolved to the actual object instead of a reference to the object 4951 as 4952 it 4953 should be. Package objects are only allowed to contain integer, string, 4954 buffer, package, and reference objects. Redhat bugzilla 608648. 4955 4956 Example Code and Data Size: These are the sizes for the OS-independent 4957 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4958 debug version of the code includes the debug output trace mechanism and 4959 has a 4960 much larger code and data size. 4961 4962 Previous Release: 4963 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4964 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 4965 Current Release: 4966 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4967 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 4968 4969 2) iASL Compiler/Disassembler and Tools: 4970 4971 iASL: Implemented a new compiler subsystem to allow definition and 4972 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. 4973 These 4974 are called "ACPI Data Tables", and the new compiler is the "Data Table 4975 Compiler". This compiler is intended to simplify the existing error-prone 4976 process of creating these tables for the BIOS, as well as allowing the 4977 disassembly, modification, recompilation, and override of existing ACPI 4978 data 4979 tables. See the iASL User Guide for detailed information. 4980 4981 iASL: Implemented a new Template Generator option in support of the new 4982 Data 4983 Table Compiler. This option will create examples of all known ACPI tables 4984 that can be used as the basis for table development. See the iASL 4985 documentation and the -T option. 4986 4987 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 4988 Descriptor Table). 4989 4990 Updated the Linux makefiles for iASL and AcpiExec to place the generated 4991 object files in the local directory so that there can be no collisions 4992 between the shared files between them that are generated with different 4993 options. 4994 4995 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. 4996 Use 4997 the #define __APPLE__ to enable this support. 4998 4999 ---------------------------------------- 5000 28 May 2010. Summary of changes for version 20100528: 5001 5002 Note: The ACPI 4.0a specification was released on April 5, 2010 and is 5003 available at www.acpi.info. This is primarily an errata release. 5004 5005 1) ACPI CA Core Subsystem: 5006 5007 Undefined ACPI tables: We are looking for the definitions for the 5008 following 5009 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 5010 5011 Implemented support to enable multi-byte transfers for Embedded 5012 Controller 5013 (EC) operation regions. Previously, the maximum data size passed to the 5014 EC 5015 operation region handler was a single byte. There are often EC Fields 5016 larger 5017 than one byte that need to be transferred, and it is useful for the EC 5018 driver 5019 to lock these as a single transaction. This change enables single 5020 transfers 5021 larger than 8 bits. This effectively changes the access to the EC space 5022 from 5023 ByteAcc to AnyAcc, and will probably require changes to the host OS 5024 Embedded 5025 Controller driver to enable 16/32/64/256-bit transfers in addition to 8- 5026 bit 5027 transfers. Alexey Starikovskiy, Lin Ming 5028 5029 Implemented a performance enhancement for namespace search and access. 5030 This 5031 change enhances the performance of namespace searches and walks by adding 5032 a 5033 backpointer to the parent in each namespace node. On large namespaces, 5034 this 5035 change can improve overall ACPI performance by up to 9X. Adding a pointer 5036 to 5037 each namespace node increases the overall size of the internal namespace 5038 by 5039 about 5%, since each namespace entry usually consists of both a namespace 5040 node and an ACPI operand object. However, this is the first growth of the 5041 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 5042 5043 Implemented a performance optimization that reduces the number of 5044 namespace 5045 walks. On control method exit, only walk the namespace if the method is 5046 known 5047 to have created namespace objects outside of its local scope. Previously, 5048 the 5049 entire namespace was traversed on each control method exit. This change 5050 can 5051 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob 5052 Moore. 5053 5054 Added support to truncate I/O addresses to 16 bits for Windows 5055 compatibility. 5056 Some ASL code has been seen in the field that inadvertently has bits set 5057 above bit 15. This feature is optional and is enabled if the BIOS 5058 requests 5059 any Windows OSI strings. It can also be enabled by the host OS. Matthew 5060 Garrett, Bob Moore. 5061 5062 Added support to limit the maximum time for the ASL Sleep() operator. To 5063 prevent accidental deep sleeps, limit the maximum time that Sleep() will 5064 actually sleep. Configurable, the default maximum is two seconds. ACPICA 5065 bugzilla 854. 5066 5067 Added run-time validation support for the _WDG and_WED Microsoft 5068 predefined 5069 methods. These objects are defined by "Windows Instrumentation", and are 5070 not 5071 part of the ACPI spec. ACPICA BZ 860. 5072 5073 Expanded all statistic counters used during namespace and device 5074 initialization from 16 to 32 bits in order to support very large 5075 namespaces. 5076 5077 Replaced all instances of %d in printf format specifiers with %u since 5078 nearly 5079 all integers in ACPICA are unsigned. 5080 5081 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly 5082 returned 5083 as AE_NO_HANDLER. 5084 5085 Example Code and Data Size: These are the sizes for the OS-independent 5086 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5087 debug version of the code includes the debug output trace mechanism and 5088 has a 5089 much larger code and data size. 5090 5091 Previous Release: 5092 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 5093 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 5094 Current Release: 5095 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 5096 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 5097 5098 2) iASL Compiler/Disassembler and Tools: 5099 5100 iASL: Added compiler support for the _WDG and_WED Microsoft predefined 5101 methods. These objects are defined by "Windows Instrumentation", and are 5102 not 5103 part of the ACPI spec. ACPICA BZ 860. 5104 5105 AcpiExec: added option to disable the memory tracking mechanism. The -dt 5106 option will disable the tracking mechanism, which improves performance 5107 considerably. 5108 5109 AcpiExec: Restructured the command line options into -d (disable) and -e 5110 (enable) options. 5111 5112 ---------------------------------------- 5113 28 April 2010. Summary of changes for version 20100428: 5114 5115 1) ACPI CA Core Subsystem: 5116 5117 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 5118 including FADT-based and GPE Block Devices, execute any _PRW methods in 5119 the 5120 new table, and process any _Lxx/_Exx GPE methods in the new table. Any 5121 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 5122 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 5123 Devices. Provides compatibility with other ACPI implementations. Two new 5124 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob 5125 Moore. 5126 5127 Fixed a regression introduced in version 20100331 within the table 5128 manager 5129 where initial table loading could fail. This was introduced in the fix 5130 for 5131 AcpiReallocateRootTable. Also, renamed some of fields in the table 5132 manager 5133 data structures to clarify their meaning and use. 5134 5135 Fixed a possible allocation overrun during internal object copy in 5136 AcpiUtCopySimpleObject. The original code did not correctly handle the 5137 case 5138 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 5139 847. 5140 5141 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 5142 possible access beyond end-of-allocation. Also, now fully validate 5143 descriptor 5144 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 5145 5146 Example Code and Data Size: These are the sizes for the OS-independent 5147 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5148 debug version of the code includes the debug output trace mechanism and 5149 has a 5150 much larger code and data size. 5151 5152 Previous Release: 5153 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 5154 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 5155 Current Release: 5156 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 5157 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 5158 5159 2) iASL Compiler/Disassembler and Tools: 5160 5161 iASL: Implemented Min/Max/Len/Gran validation for address resource 5162 descriptors. This change implements validation for the address fields 5163 that 5164 are common to all address-type resource descriptors. These checks are 5165 implemented: Checks for valid Min/Max, length within the Min/Max window, 5166 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as 5167 per 5168 table 6-40 in the ACPI 4.0a specification. Also split the large 5169 aslrestype1.c 5170 and aslrestype2.c files into five new files. ACPICA BZ 840. 5171 5172 iASL: Added support for the _Wxx predefined names. This support was 5173 missing 5174 and these names were not recognized by the compiler as valid predefined 5175 names. ACPICA BZ 851. 5176 5177 iASL: Added an error for all predefined names that are defined to return 5178 no 5179 value and thus must be implemented as Control Methods. These include all 5180 of 5181 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 5182 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 5183 5184 iASL: Implemented the -ts option to emit hex AML data in ASL format, as 5185 an 5186 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to 5187 be 5188 dynamically loaded via the Load() operator. Also cleaned up output for 5189 the 5190 - 5191 ta and -tc options. ACPICA BZ 853. 5192 5193 Tests: Added a new file with examples of extended iASL error checking. 5194 Demonstrates the advanced error checking ability of the iASL compiler. 5195 Available at tests/misc/badcode.asl. 5196 5197 ---------------------------------------- 5198 31 March 2010. Summary of changes for version 20100331: 5199 5200 1) ACPI CA Core Subsystem: 5201 5202 Completed a major update for the GPE support in order to improve support 5203 for 5204 shared GPEs and to simplify both host OS and ACPICA code. Added a 5205 reference 5206 count mechanism to support shared GPEs that require multiple device 5207 drivers. 5208 Several external interfaces have changed. One external interface has been 5209 removed. One new external interface was added. Most of the GPE external 5210 interfaces now use the GPE spinlock instead of the events mutex (and the 5211 Flags parameter for many GPE interfaces has been removed.) See the 5212 updated 5213 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, 5214 Rafael 5215 Wysocki. ACPICA BZ 831. 5216 5217 Changed: 5218 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 5219 Removed: 5220 AcpiSetGpeType 5221 New: 5222 AcpiSetGpe 5223 5224 Implemented write support for DataTable operation regions. These regions 5225 are 5226 defined via the DataTableRegion() operator. Previously, only read support 5227 was 5228 implemented. The ACPI specification allows DataTableRegions to be 5229 read/write, 5230 however. 5231 5232 Implemented a new subsystem option to force a copy of the DSDT to local 5233 memory. Optionally copy the entire DSDT to local memory (instead of 5234 simply 5235 mapping it.) There are some (albeit very rare) BIOSs that corrupt or 5236 replace 5237 the original DSDT, creating the need for this option. Default is FALSE, 5238 do 5239 not copy the DSDT. 5240 5241 Implemented detection of a corrupted or replaced DSDT. This change adds 5242 support to detect a DSDT that has been corrupted and/or replaced from 5243 outside 5244 the OS (by firmware). This is typically catastrophic for the system, but 5245 has 5246 been seen on some machines. Once this problem has been detected, the DSDT 5247 copy option can be enabled via system configuration. Lin Ming, Bob Moore. 5248 5249 Fixed two problems with AcpiReallocateRootTable during the root table 5250 copy. 5251 When copying the root table to the new allocation, the length used was 5252 incorrect. The new size was used instead of the current table size, 5253 meaning 5254 too much data was copied. Also, the count of available slots for ACPI 5255 tables 5256 was not set correctly. Alexey Starikovskiy, Bob Moore. 5257 5258 Example Code and Data Size: These are the sizes for the OS-independent 5259 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5260 debug version of the code includes the debug output trace mechanism and 5261 has a 5262 much larger code and data size. 5263 5264 Previous Release: 5265 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 5266 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 5267 Current Release: 5268 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 5269 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 5270 5271 2) iASL Compiler/Disassembler and Tools: 5272 5273 iASL: Implement limited typechecking for values returned from predefined 5274 control methods. The type of any returned static (unnamed) object is now 5275 validated. For example, Return(1). ACPICA BZ 786. 5276 5277 iASL: Fixed a predefined name object verification regression. Fixes a 5278 problem 5279 introduced in version 20100304. An error is incorrectly generated if a 5280 predefined name is declared as a static named object with a value defined 5281 using the keywords "Zero", "One", or "Ones". Lin Ming. 5282 5283 iASL: Added Windows 7 support for the -g option (get local ACPI tables) 5284 by 5285 reducing the requested registry access rights. ACPICA BZ 842. 5286 5287 Disassembler: fixed a possible fault when generating External() 5288 statements. 5289 Introduced in commit ae7d6fd: Properly handle externals with parent- 5290 prefix 5291 (carat). Fixes a string length allocation calculation. Lin Ming. 5292 5293 ---------------------------------------- 5294 04 March 2010. Summary of changes for version 20100304: 5295 5296 1) ACPI CA Core Subsystem: 5297 5298 Fixed a possible problem with the AML Mutex handling function 5299 AcpiExReleaseMutex where the function could fault under the very rare 5300 condition when the interpreter has blocked, the interpreter lock is 5301 released, 5302 the interpreter is then reentered via the same thread, and attempts to 5303 acquire an AML mutex that was previously acquired. FreeBSD report 140979. 5304 Lin 5305 Ming. 5306 5307 Implemented additional configuration support for the AML "Debug Object". 5308 Output from the debug object can now be enabled via a global variable, 5309 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine 5310 debugging. 5311 This debug output is now available in the release version of ACPICA 5312 instead 5313 of just the debug version. Also, the entire debug output module can now 5314 be 5315 configured out of the ACPICA build if desired. One new file added, 5316 executer/exdebug.c. Lin Ming, Bob Moore. 5317 5318 Added header support for the ACPI MCHI table (Management Controller Host 5319 Interface Table). This table was added in ACPI 4.0, but the defining 5320 document 5321 has only recently become available. 5322 5323 Standardized output of integer values for ACPICA warnings/errors. Always 5324 use 5325 0x prefix for hex output, always use %u for unsigned integer decimal 5326 output. 5327 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 5328 400 5329 invocations.) These invocations were converted from the original 5330 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 5331 5332 Example Code and Data Size: These are the sizes for the OS-independent 5333 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5334 debug version of the code includes the debug output trace mechanism and 5335 has a 5336 much larger code and data size. 5337 5338 Previous Release: 5339 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 5340 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 5341 Current Release: 5342 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 5343 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 5344 5345 2) iASL Compiler/Disassembler and Tools: 5346 5347 iASL: Implemented typechecking support for static (non-control method) 5348 predefined named objects that are declared with the Name() operator. For 5349 example, the type of this object is now validated to be of type Integer: 5350 Name(_BBN, 1). This change migrates the compiler to using the core 5351 predefined 5352 name table instead of maintaining a local version. Added a new file, 5353 aslpredef.c. ACPICA BZ 832. 5354 5355 Disassembler: Added support for the ACPI 4.0 MCHI table. 5356 5357 ---------------------------------------- 5358 21 January 2010. Summary of changes for version 20100121: 5359 5360 1) ACPI CA Core Subsystem: 5361 5362 Added the 2010 copyright to all module headers and signons. This affects 5363 virtually every file in the ACPICA core subsystem, the iASL compiler, the 5364 tools/utilities, and the test suites. 5365 5366 Implemented a change to the AcpiGetDevices interface to eliminate 5367 unnecessary 5368 invocations of the _STA method. In the case where a specific _HID is 5369 requested, do not run _STA until a _HID match is found. This eliminates 5370 potentially dozens of _STA calls during a search for a particular 5371 device/HID, 5372 which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 5373 5374 Implemented an additional repair for predefined method return values. 5375 Attempt 5376 to repair unexpected NULL elements within returned Package objects. 5377 Create 5378 an 5379 Integer of value zero, a NULL String, or a zero-length Buffer as 5380 appropriate. 5381 ACPICA BZ 818. Lin Ming, Bob Moore. 5382 5383 Removed the obsolete ACPI_INTEGER data type. This type was introduced as 5384 the 5385 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 5386 (with 5387 64-bit AML integers). It is now obsolete and this change removes it from 5388 the 5389 ACPICA code base, replaced by UINT64. The original typedef has been 5390 retained 5391 for now for compatibility with existing device driver code. ACPICA BZ 5392 824. 5393 5394 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field 5395 in 5396 the parse tree object. 5397 5398 Added additional warning options for the gcc-4 generation. Updated the 5399 source 5400 accordingly. This includes some code restructuring to eliminate 5401 unreachable 5402 code, elimination of some gotos, elimination of unused return values, 5403 some 5404 additional casting, and removal of redundant declarations. 5405 5406 Example Code and Data Size: These are the sizes for the OS-independent 5407 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5408 debug version of the code includes the debug output trace mechanism and 5409 has a 5410 much larger code and data size. 5411 5412 Previous Release: 5413 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 5414 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 5415 Current Release: 5416 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 5417 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 5418 5419 2) iASL Compiler/Disassembler and Tools: 5420 5421 No functional changes for this release. 5422 5423 ---------------------------------------- 5424 14 December 2009. Summary of changes for version 20091214: 5425 5426 1) ACPI CA Core Subsystem: 5427 5428 Enhanced automatic data type conversions for predefined name repairs. 5429 This 5430 change expands the automatic repairs/conversions for predefined name 5431 return 5432 values to make Integers, Strings, and Buffers fully interchangeable. 5433 Also, 5434 a 5435 Buffer can be converted to a Package of Integers if necessary. The 5436 nsrepair.c 5437 module was completely restructured. Lin Ming, Bob Moore. 5438 5439 Implemented automatic removal of null package elements during predefined 5440 name 5441 repairs. This change will automatically remove embedded and trailing NULL 5442 package elements from returned package objects that are defined to 5443 contain 5444 a 5445 variable number of sub-packages. The driver is then presented with a 5446 package 5447 with no null elements to deal with. ACPICA BZ 819. 5448 5449 Implemented a repair for the predefined _FDE and _GTM names. The expected 5450 return value for both names is a Buffer of 5 DWORDs. This repair fixes 5451 two 5452 possible problems (both seen in the field), where a package of integers 5453 is 5454 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk 5455 Kim. 5456 5457 Implemented additional module-level code support. This change will 5458 properly 5459 execute module-level code that is not at the root of the namespace (under 5460 a 5461 Device object, etc.). Now executes the code within the current scope 5462 instead 5463 of the root. ACPICA BZ 762. Lin Ming. 5464 5465 Fixed possible mutex acquisition errors when running _REG methods. Fixes 5466 a 5467 problem where mutex errors can occur when running a _REG method that is 5468 in 5469 the same scope as a method-defined operation region or an operation 5470 region 5471 under a module-level IF block. This type of code is rare, so the problem 5472 has 5473 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 5474 5475 Fixed a possible memory leak during module-level code execution. An 5476 object 5477 could be leaked for each block of executed module-level code if the 5478 interpreter slack mode is enabled This change deletes any implicitly 5479 returned 5480 object from the module-level code block. Lin Ming. 5481 5482 Removed messages for successful predefined repair(s). The repair 5483 mechanism 5484 was considered too wordy. Now, messages are only unconditionally emitted 5485 if 5486 the return object cannot be repaired. Existing messages for successful 5487 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 5488 827. 5489 5490 Example Code and Data Size: These are the sizes for the OS-independent 5491 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5492 debug version of the code includes the debug output trace mechanism and 5493 has a 5494 much larger code and data size. 5495 5496 Previous Release: 5497 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 5498 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 5499 Current Release: 5500 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 5501 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 5502 5503 2) iASL Compiler/Disassembler and Tools: 5504 5505 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC 5506 files 5507 were no longer automatically removed at the termination of the compile. 5508 5509 acpiexec: Implemented the -f option to specify default region fill value. 5510 This option specifies the value used to initialize buffers that simulate 5511 operation regions. Default value is zero. Useful for debugging problems 5512 that 5513 depend on a specific initial value for a region or field. 5514 5515 ---------------------------------------- 5516 12 November 2009. Summary of changes for version 20091112: 5517 5518 1) ACPI CA Core Subsystem: 5519 5520 Implemented a post-order callback to AcpiWalkNamespace. The existing 5521 interface only has a pre-order callback. This change adds an additional 5522 parameter for a post-order callback which will be more useful for bus 5523 scans. 5524 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 5525 5526 Modified the behavior of the operation region memory mapping cache for 5527 SystemMemory. Ensure that the memory mappings created for operation 5528 regions 5529 do not cross 4K page boundaries. Crossing a page boundary while mapping 5530 regions can cause kernel warnings on some hosts if the pages have 5531 different 5532 attributes. Such regions are probably BIOS bugs, and this is the 5533 workaround. 5534 Linux BZ 14445. Lin Ming. 5535 5536 Implemented an automatic repair for predefined methods that must return 5537 sorted lists. This change will repair (by sorting) packages returned by 5538 _ALR, 5539 _PSS, and _TSS. Drivers can now assume that the packages are correctly 5540 sorted 5541 and do not contain NULL package elements. Adds one new file, 5542 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 5543 5544 Fixed a possible fault during predefined name validation if a return 5545 Package 5546 object contains NULL elements. Also adds a warning if a NULL element is 5547 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement 5548 may 5549 include repair or removal of all such NULL elements where possible. 5550 5551 Implemented additional module-level executable AML code support. This 5552 change 5553 will execute module-level code that is not at the root of the namespace 5554 (under a Device object, etc.) at table load time. Module-level executable 5555 AML 5556 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 5557 5558 Implemented a new internal function to create Integer objects. This 5559 function 5560 simplifies miscellaneous object creation code. ACPICA BZ 823. 5561 5562 Reduced the severity of predefined repair messages, Warning to Info. 5563 Since 5564 the object was successfully repaired, a warning is too severe. Reduced to 5565 an 5566 info message for now. These messages may eventually be changed to debug- 5567 only. 5568 ACPICA BZ 812. 5569 5570 Example Code and Data Size: These are the sizes for the OS-independent 5571 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5572 debug version of the code includes the debug output trace mechanism and 5573 has a 5574 much larger code and data size. 5575 5576 Previous Release: 5577 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 5578 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 5579 Current Release: 5580 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 5581 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 5582 5583 2) iASL Compiler/Disassembler and Tools: 5584 5585 iASL: Implemented Switch() with While(1) so that Break works correctly. 5586 This 5587 change correctly implements the Switch operator with a surrounding 5588 While(1) 5589 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 5590 5591 iASL: Added a message if a package initializer list is shorter than 5592 package 5593 length. Adds a new remark for a Package() declaration if an initializer 5594 list 5595 exists, but is shorter than the declared length of the package. Although 5596 technically legal, this is probably a coding error and it is seen in the 5597 field. ACPICA BZ 815. Lin Ming, Bob Moore. 5598 5599 iASL: Fixed a problem where the compiler could fault after the maximum 5600 number 5601 of errors was reached (200). 5602 5603 acpixtract: Fixed a possible warning for pointer cast if the compiler 5604 warning 5605 level set very high. 5606 5607 ---------------------------------------- 5608 13 October 2009. Summary of changes for version 20091013: 5609 5610 1) ACPI CA Core Subsystem: 5611 5612 Fixed a problem where an Operation Region _REG method could be executed 5613 more 5614 than once. If a custom address space handler is installed by the host 5615 before 5616 the "initialize operation regions" phase of the ACPICA initialization, 5617 any 5618 _REG methods for that address space could be executed twice. This change 5619 fixes the problem. ACPICA BZ 427. Lin Ming. 5620 5621 Fixed a possible memory leak for the Scope() ASL operator. When the exact 5622 invocation of "Scope(\)" is executed (change scope to root), one internal 5623 operand object was leaked. Lin Ming. 5624 5625 Implemented a run-time repair for the _MAT predefined method. If the _MAT 5626 return value is defined as a Field object in the AML, and the field 5627 size is less than or equal to the default width of an integer (32 or 5628 64),_MAT 5629 can incorrectly return an Integer instead of a Buffer. ACPICA now 5630 automatically repairs this problem. ACPICA BZ 810. 5631 5632 Implemented a run-time repair for the _BIF and _BIX predefined methods. 5633 The 5634 "OEM Information" field is often incorrectly returned as an Integer with 5635 value zero if the field is not supported by the platform. This is due to 5636 an 5637 ambiguity in the ACPI specification. The field should always be a string. 5638 ACPICA now automatically repairs this problem by returning a NULL string 5639 within the returned Package. ACPICA BZ 807. 5640 5641 Example Code and Data Size: These are the sizes for the OS-independent 5642 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5643 debug version of the code includes the debug output trace mechanism and 5644 has a 5645 much larger code and data size. 5646 5647 Previous Release: 5648 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 5649 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 5650 Current Release: 5651 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 5652 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 5653 5654 2) iASL Compiler/Disassembler and Tools: 5655 5656 Disassembler: Fixed a problem where references to external symbols that 5657 contained one or more parent-prefixes (carats) were not handled 5658 correctly, 5659 possibly causing a fault. ACPICA BZ 806. Lin Ming. 5660 5661 Disassembler: Restructured the code so that all functions that handle 5662 external symbols are in a single module. One new file is added, 5663 common/dmextern.c. 5664 5665 AML Debugger: Added a max count argument for the Batch command (which 5666 executes multiple predefined methods within the namespace.) 5667 5668 iASL: Updated the compiler documentation (User Reference.) Available at 5669 http://www.acpica.org/documentation/. ACPICA BZ 750. 5670 5671 AcpiXtract: Updated for Lint and other formatting changes. Close all open 5672 files. 5673 5674 ---------------------------------------- 5675 03 September 2009. Summary of changes for version 20090903: 5676 5677 1) ACPI CA Core Subsystem: 5678 5679 For Windows Vista compatibility, added the automatic execution of an _INI 5680 method located at the namespace root (\_INI). This method is executed at 5681 table load time. This support is in addition to the automatic execution 5682 of 5683 \_SB._INI. Lin Ming. 5684 5685 Fixed a possible memory leak in the interpreter for AML package objects 5686 if 5687 the package initializer list is longer than the defined size of the 5688 package. 5689 This apparently can only happen if the BIOS changes the package size on 5690 the 5691 fly (seen in a _PSS object), as ASL compilers do not allow this. The 5692 interpreter will truncate the package to the defined size (and issue an 5693 error 5694 message), but previously could leave the extra objects undeleted if they 5695 were 5696 pre-created during the argument processing (such is the case if the 5697 package 5698 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 5699 5700 Fixed a problem seen when a Buffer or String is stored to itself via ASL. 5701 This has been reported in the field. Previously, ACPICA would zero out 5702 the 5703 buffer/string. Now, the operation is treated as a noop. Provides Windows 5704 compatibility. ACPICA BZ 803. Lin Ming. 5705 5706 Removed an extraneous error message for ASL constructs of the form 5707 Store(LocalX,LocalX) when LocalX is uninitialized. These curious 5708 statements 5709 are seen in many BIOSs and are once again treated as NOOPs and no error 5710 is 5711 emitted when they are encountered. ACPICA BZ 785. 5712 5713 Fixed an extraneous warning message if a _DSM reserved method returns a 5714 Package object. _DSM can return any type of object, so validation on the 5715 return type cannot be performed. ACPICA BZ 802. 5716 5717 Example Code and Data Size: These are the sizes for the OS-independent 5718 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5719 debug version of the code includes the debug output trace mechanism and 5720 has a 5721 much larger code and data size. 5722 5723 Previous Release: 5724 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 5725 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 5726 Current Release: 5727 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 5728 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 5729 5730 2) iASL Compiler/Disassembler and Tools: 5731 5732 iASL: Fixed a problem with the use of the Alias operator and Resource 5733 Templates. The correct alias is now constructed and no error is emitted. 5734 ACPICA BZ 738. 5735 5736 iASL: Implemented the -I option to specify additional search directories 5737 for 5738 include files. Allows multiple additional search paths for include files. 5739 Directories are searched in the order specified on the command line 5740 (after 5741 the local directory is searched.) ACPICA BZ 800. 5742 5743 iASL: Fixed a problem where the full pathname for include files was not 5744 emitted for warnings/errors. This caused the IDE support to not work 5745 properly. ACPICA BZ 765. 5746 5747 iASL: Implemented the -@ option to specify a Windows-style response file 5748 containing additional command line options. ACPICA BZ 801. 5749 5750 AcpiExec: Added support to load multiple AML files simultaneously (such 5751 as 5752 a 5753 DSDT and multiple SSDTs). Also added support for wildcards within the AML 5754 pathname. These features allow all machine tables to be easily loaded and 5755 debugged together. ACPICA BZ 804. 5756 5757 Disassembler: Added missing support for disassembly of HEST table Error 5758 Bank 5759 subtables. 5760 5761 ---------------------------------------- 5762 30 July 2009. Summary of changes for version 20090730: 5763 5764 The ACPI 4.0 implementation for ACPICA is complete with this release. 5765 5766 1) ACPI CA Core Subsystem: 5767 5768 ACPI 4.0: Added header file support for all new and changed ACPI tables. 5769 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are 5770 new 5771 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, 5772 BERT, 5773 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. 5774 There 5775 have been some ACPI 4.0 changes to other existing tables. Split the large 5776 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 5777 5778 ACPI 4.0: Implemented predefined name validation for all new names. There 5779 are 5780 31 new names in ACPI 4.0. The predefined validation module was split into 5781 two 5782 files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 5783 5784 Implemented support for so-called "module-level executable code". This is 5785 executable AML code that exists outside of any control method and is 5786 intended 5787 to be executed at table load time. Although illegal since ACPI 2.0, this 5788 type 5789 of code still exists and is apparently still being created. Blocks of 5790 this 5791 code are now detected and executed as intended. Currently, the code 5792 blocks 5793 must exist under either an If, Else, or While construct; these are the 5794 typical cases seen in the field. ACPICA BZ 762. Lin Ming. 5795 5796 Implemented an automatic dynamic repair for predefined names that return 5797 nested Package objects. This applies to predefined names that are defined 5798 to 5799 return a variable-length Package of sub-packages. If the number of sub- 5800 packages is one, BIOS code is occasionally seen that creates a simple 5801 single 5802 package with no sub-packages. This code attempts to fix the problem by 5803 wrapping a new package object around the existing package. These methods 5804 can 5805 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA 5806 BZ 5807 790. 5808 5809 Fixed a regression introduced in 20090625 for the AcpiGetDevices 5810 interface. 5811 The _HID/_CID matching was broken and no longer matched IDs correctly. 5812 ACPICA 5813 BZ 793. 5814 5815 Fixed a problem with AcpiReset where the reset would silently fail if the 5816 register was one of the protected I/O ports. AcpiReset now bypasses the 5817 port 5818 validation mechanism. This may eventually be driven into the 5819 AcpiRead/Write 5820 interfaces. 5821 5822 Fixed a regression related to the recent update of the AcpiRead/Write 5823 interfaces. A sleep/suspend could fail if the optional PM2 Control 5824 register 5825 does not exist during an attempt to write the Bus Master Arbitration bit. 5826 (However, some hosts already delete the code that writes this bit, and 5827 the 5828 code may in fact be obsolete at this date.) ACPICA BZ 799. 5829 5830 Fixed a problem where AcpiTerminate could fault if inadvertently called 5831 twice 5832 in succession. ACPICA BZ 795. 5833 5834 Example Code and Data Size: These are the sizes for the OS-independent 5835 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5836 debug version of the code includes the debug output trace mechanism and 5837 has a 5838 much larger code and data size. 5839 5840 Previous Release: 5841 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 5842 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 5843 Current Release: 5844 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 5845 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 5846 5847 2) iASL Compiler/Disassembler and Tools: 5848 5849 ACPI 4.0: Implemented disassembler support for all new ACPI tables and 5850 changes to existing tables. ACPICA BZ 775. 5851 5852 ---------------------------------------- 5853 25 June 2009. Summary of changes for version 20090625: 5854 5855 The ACPI 4.0 Specification was released on June 16 and is available at 5856 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 5857 continue for the next few releases. 5858 5859 1) ACPI CA Core Subsystem: 5860 5861 ACPI 4.0: Implemented interpreter support for the IPMI operation region 5862 address space. Includes support for bi-directional data buffers and an 5863 IPMI 5864 address space handler (to be installed by an IPMI device driver.) ACPICA 5865 BZ 5866 773. Lin Ming. 5867 5868 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. 5869 Includes 5870 support in both the header files and the disassembler. 5871 5872 Completed a major update for the AcpiGetObjectInfo external interface. 5873 Changes include: 5874 - Support for variable, unlimited length HID, UID, and CID strings. 5875 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, 5876 etc.) 5877 - Call the _SxW power methods on behalf of a device object. 5878 - Determine if a device is a PCI root bridge. 5879 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 5880 These changes will require an update to all callers of this interface. 5881 See 5882 the updated ACPICA Programmer Reference for details. One new source file 5883 has 5884 been added - utilities/utids.c. ACPICA BZ 368, 780. 5885 5886 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 5887 transfers. The Value parameter has been extended from 32 bits to 64 bits 5888 in 5889 order to support new ACPI 4.0 tables. These changes will require an 5890 update 5891 to 5892 all callers of these interfaces. See the ACPICA Programmer Reference for 5893 details. ACPICA BZ 768. 5894 5895 Fixed several problems with AcpiAttachData. The handler was not invoked 5896 when 5897 the host node was deleted. The data sub-object was not automatically 5898 deleted 5899 when the host node was deleted. The interface to the handler had an 5900 unused 5901 parameter, this was removed. ACPICA BZ 778. 5902 5903 Enhanced the function that dumps ACPI table headers. All non-printable 5904 characters in the string fields are now replaced with '?' (Signature, 5905 OemId, 5906 OemTableId, and CompilerId.) ACPI tables with non-printable characters in 5907 these fields are occasionally seen in the field. ACPICA BZ 788. 5908 5909 Fixed a problem with predefined method repair code where the code that 5910 attempts to repair/convert an object of incorrect type is only executed 5911 on 5912 the first time the predefined method is called. The mechanism that 5913 disables 5914 warnings on subsequent calls was interfering with the repair mechanism. 5915 ACPICA BZ 781. 5916 5917 Fixed a possible memory leak in the predefined validation/repair code 5918 when 5919 a 5920 buffer is automatically converted to an expected string object. 5921 5922 Removed obsolete 16-bit files from the distribution and from the current 5923 git 5924 tree head. ACPICA BZ 776. 5925 5926 Example Code and Data Size: These are the sizes for the OS-independent 5927 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5928 debug version of the code includes the debug output trace mechanism and 5929 has a 5930 much larger code and data size. 5931 5932 Previous Release: 5933 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 5934 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 5935 Current Release: 5936 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 5937 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 5938 5939 2) iASL Compiler/Disassembler and Tools: 5940 5941 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 5942 operation region keyword. ACPICA BZ 771, 772. Lin Ming. 5943 5944 ACPI 4.0: iASL - implemented compile-time validation support for all new 5945 predefined names and control methods (31 total). ACPICA BZ 769. 5946 5947 ---------------------------------------- 5948 21 May 2009. Summary of changes for version 20090521: 5949 5950 1) ACPI CA Core Subsystem: 5951 5952 Disabled the preservation of the SCI enable bit in the PM1 control 5953 register. 5954 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification 5955 to 5956 be 5957 a "preserved" bit - "OSPM always preserves this bit position", section 5958 4.7.3.2.1. However, some machines fail if this bit is in fact preserved 5959 because the bit needs to be explicitly set by the OS as a workaround. No 5960 machines fail if the bit is not preserved. Therefore, ACPICA no longer 5961 attempts to preserve this bit. 5962 5963 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 5964 incorrectly formed _PRT package could cause a fault. Added validation to 5965 ensure that each package element is actually a sub-package. 5966 5967 Implemented a new interface to install or override a single control 5968 method, 5969 AcpiInstallMethod. This interface is useful when debugging in order to 5970 repair 5971 an existing method or to install a missing method without having to 5972 override 5973 the entire ACPI table. See the ACPICA Programmer Reference for use and 5974 examples. Lin Ming, Bob Moore. 5975 5976 Fixed several reference count issues with the DdbHandle object that is 5977 created from a Load or LoadTable operator. Prevent premature deletion of 5978 the 5979 object. Also, mark the object as invalid once the table has been 5980 unloaded. 5981 This is needed because the handle itself may not be deleted after the 5982 table 5983 unload, depending on whether it has been stored in a named object by the 5984 caller. Lin Ming. 5985 5986 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 5987 mutexes of the same sync level are acquired but then not released in 5988 strict 5989 opposite order, the internally maintained Current Sync Level becomes 5990 confused 5991 and can cause subsequent execution errors. ACPICA BZ 471. 5992 5993 Changed the allowable release order for ASL mutex objects. The ACPI 4.0 5994 specification has been changed to make the SyncLevel for mutex objects 5995 more 5996 useful. When releasing a mutex, the SyncLevel of the mutex must now be 5997 the 5998 same as the current sync level. This makes more sense than the previous 5999 rule 6000 (SyncLevel less than or equal). This change updates the code to match the 6001 specification. 6002 6003 Fixed a problem with the local version of the AcpiOsPurgeCache function. 6004 The 6005 (local) cache must be locked during all cache object deletions. Andrew 6006 Baumann. 6007 6008 Updated the Load operator to use operation region interfaces. This 6009 replaces 6010 direct memory mapping with region access calls. Now, all region accesses 6011 go 6012 through the installed region handler as they should. 6013 6014 Simplified and optimized the NsGetNextNode function. Reduced parameter 6015 count 6016 and reduced code for this frequently used function. 6017 6018 Example Code and Data Size: These are the sizes for the OS-independent 6019 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6020 debug version of the code includes the debug output trace mechanism and 6021 has a 6022 much larger code and data size. 6023 6024 Previous Release: 6025 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 6026 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 6027 Current Release: 6028 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 6029 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 6030 6031 2) iASL Compiler/Disassembler and Tools: 6032 6033 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some 6034 problems 6035 with sub-table disassembly and handling invalid sub-tables. Attempt 6036 recovery 6037 after an invalid sub-table ID. 6038 6039 ---------------------------------------- 6040 22 April 2009. Summary of changes for version 20090422: 6041 6042 1) ACPI CA Core Subsystem: 6043 6044 Fixed a compatibility issue with the recently released I/O port 6045 protection 6046 mechanism. For windows compatibility, 1) On a port protection violation, 6047 simply ignore the request and do not return an exception (allow the 6048 control 6049 method to continue execution.) 2) If only part of the request overlaps a 6050 protected port, read/write the individual ports that are not protected. 6051 Linux 6052 BZ 13036. Lin Ming 6053 6054 Enhanced the execution of the ASL/AML BreakPoint operator so that it 6055 actually 6056 breaks into the AML debugger if the debugger is present. This matches the 6057 ACPI-defined behavior. 6058 6059 Fixed several possible warnings related to the use of the configurable 6060 ACPI_THREAD_ID. This type can now be configured as either an integer or a 6061 pointer with no warnings. Also fixes several warnings in printf-like 6062 statements for the 64-bit build when the type is configured as a pointer. 6063 ACPICA BZ 766, 767. 6064 6065 Fixed a number of possible warnings when compiling with gcc 4+ (depending 6066 on 6067 warning options.) Examples include printf formats, aliasing, unused 6068 globals, 6069 missing prototypes, missing switch default statements, use of non-ANSI 6070 library functions, use of non-ANSI constructs. See generate/unix/Makefile 6071 for 6072 a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 6073 6074 Example Code and Data Size: These are the sizes for the OS-independent 6075 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6076 debug version of the code includes the debug output trace mechanism and 6077 has a 6078 much larger code and data size. 6079 6080 Previous Release: 6081 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 6082 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 6083 Current Release: 6084 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 6085 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 6086 6087 2) iASL Compiler/Disassembler and Tools: 6088 6089 iASL: Fixed a generation warning from Bison 2.3 and fixed several 6090 warnings 6091 on 6092 the 64-bit build. 6093 6094 iASL: Fixed a problem where the Unix/Linux versions of the compiler could 6095 not 6096 correctly digest Windows/DOS formatted files (with CR/LF). 6097 6098 iASL: Added a new option for "quiet mode" (-va) that produces only the 6099 compilation summary, not individual errors and warnings. Useful for large 6100 batch compilations. 6101 6102 AcpiExec: Implemented a new option (-z) to enable a forced 6103 semaphore/mutex 6104 timeout that can be used to detect hang conditions during execution of 6105 AML 6106 code (includes both internal semaphores and AML-defined mutexes and 6107 events.) 6108 6109 Added new makefiles for the generation of acpica in a generic unix-like 6110 environment. These makefiles are intended to generate the acpica tools 6111 and 6112 utilities from the original acpica git source tree structure. 6113 6114 Test Suites: Updated and cleaned up the documentation files. Updated the 6115 copyrights to 2009, affecting all source files. Use the new version of 6116 iASL 6117 with quiet mode. Increased the number of available semaphores in the 6118 Windows 6119 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, 6120 added 6121 an alternate implementation of the semaphore timeout to allow aslts to 6122 execute fully on Cygwin. 6123 6124 ---------------------------------------- 6125 20 March 2009. Summary of changes for version 20090320: 6126 6127 1) ACPI CA Core Subsystem: 6128 6129 Fixed a possible race condition between AcpiWalkNamespace and dynamic 6130 table 6131 unloads. Added a reader/writer locking mechanism to allow multiple 6132 concurrent 6133 namespace walks (readers), but block a dynamic table unload until it can 6134 gain 6135 exclusive write access to the namespace. This fixes a problem where a 6136 table 6137 unload could (possibly catastrophically) delete the portion of the 6138 namespace 6139 that is currently being examined by a walk. Adds a new file, utlock.c, 6140 that 6141 implements the reader/writer lock mechanism. ACPICA BZ 749. 6142 6143 Fixed a regression introduced in version 20090220 where a change to the 6144 FADT 6145 handling could cause the ACPICA subsystem to access non-existent I/O 6146 ports. 6147 6148 Modified the handling of FADT register and table (FACS/DSDT) addresses. 6149 The 6150 FADT can contain both 32-bit and 64-bit versions of these addresses. 6151 Previously, the 64-bit versions were favored, meaning that if both 32 and 6152 64 6153 versions were valid, but not equal, the 64-bit version was used. This was 6154 found to cause some machines to fail. Now, in this case, the 32-bit 6155 version 6156 is used instead. This now matches the Windows behavior. 6157 6158 Implemented a new mechanism to protect certain I/O ports. Provides 6159 Microsoft 6160 compatibility and protects the standard PC I/O ports from access via AML 6161 code. Adds a new file, hwvalid.c 6162 6163 Fixed a possible extraneous warning message from the FADT support. The 6164 message warns of a 32/64 length mismatch between the legacy and GAS 6165 definitions for a register. 6166 6167 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface 6168 is 6169 made obsolete by the port protection mechanism above. It was previously 6170 used 6171 to validate the entire address range of an operation region, which could 6172 be 6173 incorrect if the range included illegal ports, but fields within the 6174 operation region did not actually access those ports. Validation is now 6175 performed on a per-field basis instead of the entire region. 6176 6177 Modified the handling of the PM1 Status Register ignored bit (bit 11.) 6178 Ignored bits must be "preserved" according to the ACPI spec. Usually, 6179 this 6180 means a read/modify/write when writing to the register. However, for 6181 status 6182 registers, writing a one means clear the event. Writing a zero means 6183 preserve 6184 the event (do not clear.) This behavior is clarified in the ACPI 4.0 6185 spec, 6186 and the ACPICA code now simply always writes a zero to the ignored bit. 6187 6188 Modified the handling of ignored bits for the PM1 A/B Control Registers. 6189 As 6190 per the ACPI specification, for the control registers, preserve 6191 (read/modify/write) all bits that are defined as either reserved or 6192 ignored. 6193 6194 Updated the handling of write-only bits in the PM1 A/B Control Registers. 6195 When reading the register, zero the write-only bits as per the ACPI spec. 6196 ACPICA BZ 443. Lin Ming. 6197 6198 Removed "Linux" from the list of supported _OSI strings. Linux no longer 6199 wants to reply true to this request. The Windows strings are the only 6200 paths 6201 through the AML that are tested and known to work properly. 6202 6203 Previous Release: 6204 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 6205 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 6206 Current Release: 6207 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 6208 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 6209 6210 2) iASL Compiler/Disassembler and Tools: 6211 6212 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c 6213 and 6214 aetables.c 6215 6216 ---------------------------------------- 6217 20 February 2009. Summary of changes for version 20090220: 6218 6219 1) ACPI CA Core Subsystem: 6220 6221 Optimized the ACPI register locking. Removed locking for reads from the 6222 ACPI 6223 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock 6224 is 6225 not required when reading the single-bit registers. The 6226 AcpiGetRegisterUnlocked function is no longer needed and has been 6227 removed. 6228 This will improve performance for reads on these registers. ACPICA BZ 6229 760. 6230 6231 Fixed the parameter validation for AcpiRead/Write. Now return 6232 AE_BAD_PARAMETER if the input register pointer is null, and 6233 AE_BAD_ADDRESS 6234 if 6235 the register has an address of zero. Previously, these cases simply 6236 returned 6237 AE_OK. For optional registers such as PM1B status/enable/control, the 6238 caller 6239 should check for a valid register address before calling. ACPICA BZ 748. 6240 6241 Renamed the external ACPI bit register access functions. Renamed 6242 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 6243 functions. The new names are AcpiReadBitRegister and 6244 AcpiWriteBitRegister. 6245 Also, restructured the code for these functions by simplifying the code 6246 path 6247 and condensing duplicate code to reduce code size. 6248 6249 Added new functions to transparently handle the possibly split PM1 A/B 6250 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two 6251 functions 6252 now handle the split registers for PM1 Status, Enable, and Control. 6253 ACPICA 6254 BZ 6255 746. 6256 6257 Added a function to handle the PM1 control registers, 6258 AcpiHwWritePm1Control. 6259 This function writes both of the PM1 control registers (A/B). These 6260 registers 6261 are different than the PM1 A/B status and enable registers in that 6262 different 6263 values can be written to the A/B registers. Most notably, the SLP_TYP 6264 bits 6265 can be different, as per the values returned from the _Sx predefined 6266 methods. 6267 6268 Removed an extra register write within AcpiHwClearAcpiStatus. This 6269 function 6270 was writing an optional PM1B status register twice. The existing call to 6271 the 6272 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 6273 A/B 6274 register. ACPICA BZ 751. 6275 6276 Split out the PM1 Status registers from the FADT. Added new globals for 6277 these 6278 registers (A/B), similar to the way the PM1 Enable registers are handled. 6279 Instead of overloading the FADT Event Register blocks. This makes the 6280 code 6281 clearer and less prone to error. 6282 6283 Fixed the warning message for when the platform contains too many ACPI 6284 tables 6285 for the default size of the global root table data structure. The 6286 calculation 6287 for the truncation value was incorrect. 6288 6289 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 6290 obsolete macro, since it is now a simple reference to ->common.type. 6291 There 6292 were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 6293 6294 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 6295 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 6296 simply SLEEP_TYPE. ACPICA BZ 754. 6297 6298 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 6299 function is only needed on 64-bit host operating systems and is thus not 6300 included for 32-bit hosts. 6301 6302 Debug output: print the input and result for invocations of the _OSI 6303 reserved 6304 control method via the ACPI_LV_INFO debug level. Also, reduced some of 6305 the 6306 verbosity of this debug level. Len Brown. 6307 6308 Example Code and Data Size: These are the sizes for the OS-independent 6309 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6310 debug version of the code includes the debug output trace mechanism and 6311 has a 6312 much larger code and data size. 6313 6314 Previous Release: 6315 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 6316 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 6317 Current Release: 6318 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 6319 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 6320 6321 2) iASL Compiler/Disassembler and Tools: 6322 6323 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 6324 various legal performance profiles. 6325 6326 ---------------------------------------- 6327 23 January 2009. Summary of changes for version 20090123: 6328 6329 1) ACPI CA Core Subsystem: 6330 6331 Added the 2009 copyright to all module headers and signons. This affects 6332 virtually every file in the ACPICA core subsystem, the iASL compiler, and 6333 the tools/utilities. 6334 6335 Implemented a change to allow the host to override any ACPI table, 6336 including 6337 dynamically loaded tables. Previously, only the DSDT could be replaced by 6338 the 6339 host. With this change, the AcpiOsTableOverride interface is called for 6340 each 6341 table found in the RSDT/XSDT during ACPICA initialization, and also 6342 whenever 6343 a table is dynamically loaded via the AML Load operator. 6344 6345 Updated FADT flag definitions, especially the Boot Architecture flags. 6346 6347 Debugger: For the Find command, automatically pad the input ACPI name 6348 with 6349 underscores if the name is shorter than 4 characters. This enables a 6350 match 6351 with the actual namespace entry which is itself padded with underscores. 6352 6353 Example Code and Data Size: These are the sizes for the OS-independent 6354 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6355 debug version of the code includes the debug output trace mechanism and 6356 has a 6357 much larger code and data size. 6358 6359 Previous Release: 6360 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 6361 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 6362 Current Release: 6363 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 6364 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 6365 6366 2) iASL Compiler/Disassembler and Tools: 6367 6368 Fix build error under Bison-2.4. 6369 6370 Dissasembler: Enhanced FADT support. Added decoding of the Boot 6371 Architecture 6372 flags. Now decode all flags, regardless of the FADT version. Flag output 6373 includes the FADT version which first defined each flag. 6374 6375 The iASL -g option now dumps the RSDT to a file (in addition to the FADT 6376 and 6377 DSDT). Windows only. 6378 6379 ---------------------------------------- 6380 04 December 2008. Summary of changes for version 20081204: 6381 6382 1) ACPI CA Core Subsystem: 6383 6384 The ACPICA Programmer Reference has been completely updated and revamped 6385 for 6386 this release. This includes updates to the external interfaces, OSL 6387 interfaces, the overview sections, and the debugger reference. 6388 6389 Several new ACPICA interfaces have been implemented and documented in the 6390 programmer reference: 6391 AcpiReset - Writes the reset value to the FADT-defined reset register. 6392 AcpiDisableAllGpes - Disable all available GPEs. 6393 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 6394 AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 6395 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 6396 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 6397 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 6398 6399 Most of the public ACPI hardware-related interfaces have been moved to a 6400 new 6401 file, components/hardware/hwxface.c 6402 6403 Enhanced the FADT parsing and low-level ACPI register access: The ACPI 6404 register lengths within the FADT are now used, and the low level ACPI 6405 register access no longer hardcodes the ACPI register lengths. Given that 6406 there may be some risk in actually trusting the FADT register lengths, a 6407 run- 6408 time option was added to fall back to the default hardcoded lengths if 6409 the 6410 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 6411 option is set to true for now, and a warning is issued if a suspicious 6412 FADT 6413 register length is overridden with the default value. 6414 6415 Fixed a reference count issue in NsRepairObject. This problem was 6416 introduced 6417 in version 20081031 as part of a fix to repair Buffer objects within 6418 Packages. Lin Ming. 6419 6420 Added semaphore support to the Linux/Unix application OS-services layer 6421 (OSL). ACPICA BZ 448. Lin Ming. 6422 6423 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes 6424 will 6425 be implemented in the OSL, or will binary semaphores be used instead. 6426 6427 Example Code and Data Size: These are the sizes for the OS-independent 6428 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6429 debug version of the code includes the debug output trace mechanism and 6430 has a 6431 much larger code and data size. 6432 6433 Previous Release: 6434 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 6435 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 6436 Current Release: 6437 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 6438 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 6439 6440 2) iASL Compiler/Disassembler and Tools: 6441 6442 iASL: Completed the '-e' option to include additional ACPI tables in 6443 order 6444 to 6445 aid with disassembly and External statement generation. ACPICA BZ 742. 6446 Lin 6447 Ming. 6448 6449 iASL: Removed the "named object in while loop" error. The compiler cannot 6450 determine how many times a loop will execute. ACPICA BZ 730. 6451 6452 Disassembler: Implemented support for FADT revision 2 (MS extension). 6453 ACPICA 6454 BZ 743. 6455 6456 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and 6457 MCFG). 6458 6459 ---------------------------------------- 6460 31 October 2008. Summary of changes for version 20081031: 6461 6462 1) ACPI CA Core Subsystem: 6463 6464 Restructured the ACPICA header files into public/private. acpi.h now 6465 includes 6466 only the "public" acpica headers. All other acpica headers are "private" 6467 and 6468 should not be included by acpica users. One new file, accommon.h is used 6469 to 6470 include the commonly used private headers for acpica code generation. 6471 Future 6472 plans include moving all private headers to a new subdirectory. 6473 6474 Implemented an automatic Buffer->String return value conversion for 6475 predefined ACPI methods. For these methods (such as _BIF), added 6476 automatic 6477 conversion for return objects that are required to be a String, but a 6478 Buffer 6479 was found instead. This can happen when reading string battery data from 6480 an 6481 operation region, because it used to be difficult to convert the data 6482 from 6483 buffer to string from within the ASL. Ensures that the host OS is 6484 provided 6485 with a valid null-terminated string. Linux BZ 11822. 6486 6487 Updated the FACS waking vector interfaces. Split 6488 AcpiSetFirmwareWakingVector 6489 into two: one for the 32-bit vector, another for the 64-bit vector. This 6490 is 6491 required because the host OS must setup the wake much differently for 6492 each 6493 vector (real vs. protected mode, etc.) and the interface itself should 6494 not 6495 be 6496 deciding which vector to use. Also, eliminated the 6497 GetFirmwareWakingVector 6498 interface, as it served no purpose (only the firmware reads the vector, 6499 OS 6500 only writes the vector.) ACPICA BZ 731. 6501 6502 Implemented a mechanism to escape infinite AML While() loops. Added a 6503 loop 6504 counter to force exit from AML While loops if the count becomes too 6505 large. 6506 This can occur in poorly written AML when the hardware does not respond 6507 within a while loop and the loop does not implement a timeout. The 6508 maximum 6509 loop count is configurable. A new exception code is returned when a loop 6510 is 6511 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 6512 6513 Optimized the execution of AML While loops. Previously, a control state 6514 object was allocated and freed for each execution of the loop. The 6515 optimization is to simply reuse the control state for each iteration. 6516 This 6517 speeds up the raw loop execution time by about 5%. 6518 6519 Enhanced the implicit return mechanism. For Windows compatibility, return 6520 an 6521 implicit integer of value zero for methods that contain no executable 6522 code. 6523 Such methods are seen in the field as stubs (presumably), and can cause 6524 drivers to fail if they expect a return value. Lin Ming. 6525 6526 Allow multiple backslashes as root prefixes in namepaths. In a fully 6527 qualified namepath, allow multiple backslash prefixes. This can happen 6528 (and 6529 is seen in the field) because of the use of a double-backslash in strings 6530 (since backslash is the escape character) causing confusion. ACPICA BZ 6531 739 6532 Lin Ming. 6533 6534 Emit a warning if two different FACS or DSDT tables are discovered in the 6535 FADT. Checks if there are two valid but different addresses for the FACS 6536 and 6537 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 6538 6539 Consolidated the method argument count validation code. Merged the code 6540 that 6541 validates control method argument counts into the predefined validation 6542 module. Eliminates possible multiple warnings for incorrect argument 6543 counts. 6544 6545 Implemented ACPICA example code. Includes code for ACPICA initialization, 6546 handler installation, and calling a control method. Available at 6547 source/tools/examples. 6548 6549 Added a global pointer for FACS table to simplify internal FACS access. 6550 Use 6551 the global pointer instead of using AcpiGetTableByIndex for each FACS 6552 access. 6553 This simplifies the code for the Global Lock and the Firmware Waking 6554 Vector(s). 6555 6556 Example Code and Data Size: These are the sizes for the OS-independent 6557 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6558 debug version of the code includes the debug output trace mechanism and 6559 has a 6560 much larger code and data size. 6561 6562 Previous Release: 6563 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 6564 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 6565 Current Release: 6566 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 6567 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 6568 6569 2) iASL Compiler/Disassembler and Tools: 6570 6571 iASL: Improved disassembly of external method calls. Added the -e option 6572 to 6573 allow the inclusion of additional ACPI tables to help with the 6574 disassembly 6575 of 6576 method invocations and the generation of external declarations during the 6577 disassembly. Certain external method invocations cannot be disassembled 6578 properly without the actual declaration of the method. Use the -e option 6579 to 6580 include the table where the external method(s) are actually declared. 6581 Most 6582 useful for disassembling SSDTs that make method calls back to the master 6583 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl 6584 -d 6585 -e dsdt.aml ssdt1.aml 6586 6587 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 6588 problem where the use of an alias within a namepath would result in a not 6589 found error or cause the compiler to fault. Also now allows forward 6590 references from the Alias operator itself. ACPICA BZ 738. 6591 6592 ---------------------------------------- 6593 26 September 2008. Summary of changes for version 20080926: 6594 6595 1) ACPI CA Core Subsystem: 6596 6597 Designed and implemented a mechanism to validate predefined ACPI methods 6598 and 6599 objects. This code validates the predefined ACPI objects (objects whose 6600 names 6601 start with underscore) that appear in the namespace, at the time they are 6602 evaluated. The argument count and the type of the returned object are 6603 validated against the ACPI specification. The purpose of this validation 6604 is 6605 to detect problems with the BIOS-implemented predefined ACPI objects 6606 before 6607 the results are returned to the ACPI-related drivers. Future enhancements 6608 may 6609 include actual repair of incorrect return objects where possible. Two new 6610 files are nspredef.c and acpredef.h. 6611 6612 Fixed a fault in the AML parser if a memory allocation fails during the 6613 Op 6614 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 6615 6616 Fixed an issue with implicit return compatibility. This change improves 6617 the 6618 implicit return mechanism to be more compatible with the MS interpreter. 6619 Lin 6620 Ming, ACPICA BZ 349. 6621 6622 Implemented support for zero-length buffer-to-string conversions. Allow 6623 zero 6624 length strings during interpreter buffer-to-string conversions. For 6625 example, 6626 during the ToDecimalString and ToHexString operators, as well as implicit 6627 conversions. Fiodor Suietov, ACPICA BZ 585. 6628 6629 Fixed two possible memory leaks in the error exit paths of 6630 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions 6631 are 6632 similar in that they use a stack of state objects in order to eliminate 6633 recursion. The stack must be fully unwound and deallocated if an error 6634 occurs. Lin Ming. ACPICA BZ 383. 6635 6636 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the 6637 global 6638 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 6639 Moore ACPICA BZ 442. 6640 6641 Removed the obsolete version number in module headers. Removed the 6642 "$Revision" number that appeared in each module header. This version 6643 number 6644 was useful under SourceSafe and CVS, but has no meaning under git. It is 6645 not 6646 only incorrect, it could also be misleading. 6647 6648 Example Code and Data Size: These are the sizes for the OS-independent 6649 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6650 debug version of the code includes the debug output trace mechanism and 6651 has a 6652 much larger code and data size. 6653 6654 Previous Release: 6655 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6656 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 6657 Current Release: 6658 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 6659 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 6660 6661 ---------------------------------------- 6662 29 August 2008. Summary of changes for version 20080829: 6663 6664 1) ACPI CA Core Subsystem: 6665 6666 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 6667 Reference. Changes include the elimination of cheating on the Object 6668 field 6669 for the DdbHandle subtype, addition of a reference class field to 6670 differentiate the various reference types (instead of an AML opcode), and 6671 the 6672 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 6673 6674 Reduce an error to a warning for an incorrect method argument count. 6675 Previously aborted with an error if too few arguments were passed to a 6676 control method via the external ACPICA interface. Now issue a warning 6677 instead 6678 and continue. Handles the case where the method inadvertently declares 6679 too 6680 many arguments, but does not actually use the extra ones. Applies mainly 6681 to 6682 the predefined methods. Lin Ming. Linux BZ 11032. 6683 6684 Disallow the evaluation of named object types with no intrinsic value. 6685 Return 6686 AE_TYPE for objects that have no value and therefore evaluation is 6687 undefined: 6688 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation 6689 of 6690 these types were allowed, but an exception would be generated at some 6691 point 6692 during the evaluation. Now, the error is generated up front. 6693 6694 Fixed a possible memory leak in the AcpiNsGetExternalPathname function 6695 (nsnames.c). Fixes a leak in the error exit path. 6696 6697 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These 6698 debug 6699 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and 6700 ACPI_EXCEPTION 6701 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 6702 ACPI_LV_EVENTS. 6703 6704 Removed obsolete and/or unused exception codes from the acexcep.h header. 6705 There is the possibility that certain device drivers may be affected if 6706 they 6707 use any of these exceptions. 6708 6709 The ACPICA documentation has been added to the public git source tree, 6710 under 6711 acpica/documents. Included are the ACPICA programmer reference, the iASL 6712 compiler reference, and the changes.txt release logfile. 6713 6714 Example Code and Data Size: These are the sizes for the OS-independent 6715 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6716 debug version of the code includes the debug output trace mechanism and 6717 has a 6718 much larger code and data size. 6719 6720 Previous Release: 6721 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6722 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 6723 Current Release: 6724 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6725 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 6726 6727 2) iASL Compiler/Disassembler and Tools: 6728 6729 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 6730 defines _SCP with 3 arguments. Previous versions defined it with only 1 6731 argument. iASL now allows both definitions. 6732 6733 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for 6734 zero- 6735 length subtables when disassembling ACPI tables. Also fixed a couple of 6736 errors where a full 16-bit table type field was not extracted from the 6737 input 6738 properly. 6739 6740 acpisrc: Improve comment counting mechanism for generating source code 6741 statistics. Count first and last lines of multi-line comments as 6742 whitespace, 6743 not comment lines. Handle Linux legal header in addition to standard 6744 acpica 6745 header. 6746 6747 ---------------------------------------- 6748 6749 29 July 2008. Summary of changes for version 20080729: 6750 6751 1) ACPI CA Core Subsystem: 6752 6753 Fix a possible deadlock in the GPE dispatch. Remove call to 6754 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will 6755 attempt 6756 to acquire the GPE lock but can deadlock since the GPE lock is already 6757 held 6758 at dispatch time. This code was introduced in version 20060831 as a 6759 response 6760 to Linux BZ 6881 and has since been removed from Linux. 6761 6762 Add a function to dereference returned reference objects. Examines the 6763 return 6764 object from a call to AcpiEvaluateObject. Any Index or RefOf references 6765 are 6766 automatically dereferenced in an attempt to return something useful 6767 (these 6768 reference types cannot be converted into an external ACPI_OBJECT.) 6769 Provides 6770 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 6771 6772 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 6773 subtables for the MADT and one new subtable for the SRAT. Includes 6774 disassembler and AcpiSrc support. Data from the Intel 64 Architecture 6775 x2APIC 6776 Specification, June 2008. 6777 6778 Additional error checking for pathname utilities. Add error check after 6779 all 6780 calls to AcpiNsGetPathnameLength. Add status return from 6781 AcpiNsBuildExternalPath and check after all calls. Add parameter 6782 validation 6783 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 6784 6785 Return status from the global init function AcpiUtGlobalInitialize. This 6786 is 6787 used by both the kernel subsystem and the utilities such as iASL 6788 compiler. 6789 The function could possibly fail when the caches are initialized. Yang 6790 Yi. 6791 6792 Add a function to decode reference object types to strings. Created for 6793 improved error messages. 6794 6795 Improve object conversion error messages. Better error messages during 6796 object 6797 conversion from internal to the external ACPI_OBJECT. Used for external 6798 calls 6799 to AcpiEvaluateObject. 6800 6801 Example Code and Data Size: These are the sizes for the OS-independent 6802 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6803 debug version of the code includes the debug output trace mechanism and 6804 has a 6805 much larger code and data size. 6806 6807 Previous Release: 6808 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 6809 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 6810 Current Release: 6811 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6812 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 6813 6814 2) iASL Compiler/Disassembler and Tools: 6815 6816 Debugger: fix a possible hang when evaluating non-methods. Fixes a 6817 problem 6818 introduced in version 20080701. If the object being evaluated (via 6819 execute 6820 command) is not a method, the debugger can hang while trying to obtain 6821 non- 6822 existent parameters. 6823 6824 iASL: relax error for using reserved "_T_x" identifiers. These names can 6825 appear in a disassembled ASL file if they were emitted by the original 6826 compiler. Instead of issuing an error or warning and forcing the user to 6827 manually change these names, issue a remark instead. 6828 6829 iASL: error if named object created in while loop. Emit an error if any 6830 named 6831 object is created within a While loop. If allowed, this code will 6832 generate 6833 a 6834 run-time error on the second iteration of the loop when an attempt is 6835 made 6836 to 6837 create the same named object twice. ACPICA bugzilla 730. 6838 6839 iASL: Support absolute pathnames for include files. Add support for 6840 absolute 6841 pathnames within the Include operator. previously, only relative 6842 pathnames 6843 were supported. 6844 6845 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource 6846 Descriptor. 6847 The ACPI spec requires one interrupt minimum. BZ 423 6848 6849 iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 6850 Handles the case for the Interrupt Resource Descriptor where 6851 the ResourceSource argument is omitted but ResourceSourceIndex 6852 is present. Now leave room for the Index. BZ 426 6853 6854 iASL: Prevent error message if CondRefOf target does not exist. Fixes 6855 cases 6856 where an error message is emitted if the target does not exist. BZ 516 6857 6858 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 6859 (get ACPI tables on Windows). This was apparently broken in version 6860 20070919. 6861 6862 AcpiXtract: Handle EOF while extracting data. Correctly handle the case 6863 where 6864 the EOF happens immediately after the last table in the input file. Print 6865 completion message. Previously, no message was displayed in this case. 6866 6867 ---------------------------------------- 6868 01 July 2008. Summary of changes for version 20080701: 6869 6870 0) Git source tree / acpica.org 6871 6872 Fixed a problem where a git-clone from http would not transfer the entire 6873 source tree. 6874 6875 1) ACPI CA Core Subsystem: 6876 6877 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 6878 enable bit. Now performs a read-change-write of the enable register 6879 instead 6880 of simply writing out the cached enable mask. This will prevent 6881 inadvertent 6882 enabling of GPEs if a rogue GPE is received during initialization (before 6883 GPE 6884 handlers are installed.) 6885 6886 Implemented a copy for dynamically loaded tables. Previously, dynamically 6887 loaded tables were simply mapped - but on some machines this memory is 6888 corrupted after suspend. Now copy the table to a local buffer. For the 6889 OpRegion case, added checksum verify. Use the table length from the table 6890 header, not the region length. For the Buffer case, use the table length 6891 also. Dennis Noordsij, Bob Moore. BZ 10734 6892 6893 Fixed a problem where the same ACPI table could not be dynamically loaded 6894 and 6895 unloaded more than once. Without this change, a table cannot be loaded 6896 again 6897 once it has been loaded/unloaded one time. The current mechanism does not 6898 unregister a table upon an unload. During a load, if the same table is 6899 found, 6900 this no longer returns an exception. BZ 722 6901 6902 Fixed a problem where the wrong descriptor length was calculated for the 6903 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as 6904 EndTag 6905 are calculated as 12 bytes long, but the actual length in the internal 6906 descriptor is 16 because of the round-up to 8 on the 64-bit build. 6907 Reported 6908 by Linn Crosetto. BZ 728 6909 6910 Fixed a possible memory leak in the Unload operator. The DdbHandle 6911 returned 6912 by Load() did not have its reference count decremented during unload, 6913 leading 6914 to a memory leak. Lin Ming. BZ 727 6915 6916 Fixed a possible memory leak when deleting thermal/processor objects. Any 6917 associated notify handlers (and objects) were not being deleted. Fiodor 6918 Suietov. BZ 506 6919 6920 Fixed the ordering of the ASCII names in the global mutex table to match 6921 the 6922 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug 6923 only. 6924 Vegard Nossum. BZ 726 6925 6926 Enhanced the AcpiGetObjectInfo interface to return the number of required 6927 arguments if the object is a control method. Added this call to the 6928 debugger 6929 so the proper number of default arguments are passed to a method. This 6930 prevents a warning when executing methods from AcpiExec. 6931 6932 Added a check for an invalid handle in AcpiGetObjectInfo. Return 6933 AE_BAD_PARAMETER if input handle is invalid. BZ 474 6934 6935 Fixed an extraneous warning from exconfig.c on the 64-bit build. 6936 6937 Example Code and Data Size: These are the sizes for the OS-independent 6938 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6939 debug version of the code includes the debug output trace mechanism and 6940 has a 6941 much larger code and data size. 6942 6943 Previous Release: 6944 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 6945 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 6946 Current Release: 6947 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 6948 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 6949 6950 2) iASL Compiler/Disassembler and Tools: 6951 6952 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 6953 resource descriptor names. 6954 6955 iASL: Detect invalid ASCII characters in input (windows version). Removed 6956 the 6957 "-CF" flag from the flex compile, enables correct detection of non-ASCII 6958 characters in the input. BZ 441 6959 6960 iASL: Eliminate warning when result of LoadTable is not used. Eliminate 6961 the 6962 "result of operation not used" warning when the DDB handle returned from 6963 LoadTable is not used. The warning is not needed. BZ 590 6964 6965 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG 6966 method 6967 to 6968 pass address of table to the AML. Added option to disable OpRegion 6969 simulation 6970 to allow creation of an OpRegion with a real address that was passed to 6971 _CFG. 6972 All of this allows testing of the Load and Unload operators from 6973 AcpiExec. 6974 6975 Debugger: update tables command for unloaded tables. Handle unloaded 6976 tables 6977 and use the standard table header output routine. 6978 6979 ---------------------------------------- 6980 09 June 2008. Summary of changes for version 20080609: 6981 6982 1) ACPI CA Core Subsystem: 6983 6984 Implemented a workaround for reversed _PRT entries. A significant number 6985 of 6986 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 6987 change dynamically detects and repairs this problem. Provides 6988 compatibility 6989 with MS ACPI. BZ 6859 6990 6991 Simplified the internal ACPI hardware interfaces to eliminate the locking 6992 flag parameter from Register Read/Write. Added a new external interface, 6993 AcpiGetRegisterUnlocked. 6994 6995 Fixed a problem where the invocation of a GPE control method could hang. 6996 This 6997 was a regression introduced in 20080514. The new method argument count 6998 validation mechanism can enter an infinite loop when a GPE method is 6999 dispatched. Problem fixed by removing the obsolete code that passed GPE 7000 block 7001 information to the notify handler via the control method parameter 7002 pointer. 7003 7004 Fixed a problem where the _SST execution status was incorrectly returned 7005 to 7006 the caller of AcpiEnterSleepStatePrep. This was a regression introduced 7007 in 7008 20080514. _SST is optional and a NOT_FOUND exception should never be 7009 returned. BZ 716 7010 7011 Fixed a problem where a deleted object could be accessed from within the 7012 AML 7013 parser. This was a regression introduced in version 20080123 as a fix for 7014 the 7015 Unload operator. Lin Ming. BZ 10669 7016 7017 Cleaned up the debug operand dump mechanism. Eliminated unnecessary 7018 operands 7019 and eliminated the use of a negative index in a loop. Operands are now 7020 displayed in the correct order, not backwards. This also fixes a 7021 regression 7022 introduced in 20080514 on 64-bit systems where the elimination of 7023 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 7024 715 7025 7026 Fixed a possible memory leak in EvPciConfigRegionSetup where the error 7027 exit 7028 path did not delete a locally allocated structure. 7029 7030 Updated definitions for the DMAR and SRAT tables to synchronize with the 7031 current specifications. Includes disassembler support. 7032 7033 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 7034 loop termination value was used. Loop terminated on iteration early, 7035 missing 7036 one mutex. Linn Crosetto 7037 7038 Example Code and Data Size: These are the sizes for the OS-independent 7039 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7040 debug version of the code includes the debug output trace mechanism and 7041 has a 7042 much larger code and data size. 7043 7044 Previous Release: 7045 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 7046 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 7047 Current Release: 7048 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 7049 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 7050 7051 2) iASL Compiler/Disassembler and Tools: 7052 7053 Disassembler: Implemented support for EisaId() within _CID objects. Now 7054 disassemble integer _CID objects back to EisaId invocations, including 7055 multiple integers within _CID packages. Includes single-step support for 7056 debugger also. 7057 7058 Disassembler: Added support for DMAR and SRAT table definition changes. 7059 7060 ---------------------------------------- 7061 14 May 2008. Summary of changes for version 20080514: 7062 7063 1) ACPI CA Core Subsystem: 7064 7065 Fixed a problem where GPEs were enabled too early during the ACPICA 7066 initialization. This could lead to "handler not installed" errors on some 7067 machines. Moved GPE enable until after _REG/_STA/_INI methods are run. 7068 This 7069 ensures that all operation regions and devices throughout the namespace 7070 have 7071 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 7072 7073 Implemented a change to the enter sleep code. Moved execution of the _GTS 7074 method to just before setting sleep enable bit. The execution was moved 7075 from 7076 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 7077 immediately before the SLP_EN bit is set, as per the ACPI specification. 7078 Luming Yu, BZ 1653. 7079 7080 Implemented a fix to disable unknown GPEs (2nd version). Now always 7081 disable 7082 the GPE, even if ACPICA thinks that that it is already disabled. It is 7083 possible that the AML or some other code has enabled the GPE unbeknownst 7084 to 7085 the ACPICA code. 7086 7087 Fixed a problem with the Field operator where zero-length fields would 7088 return 7089 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length 7090 ASL 7091 field declarations in Field(), BankField(), and IndexField(). BZ 10606. 7092 7093 Implemented a fix for the Load operator, now load the table at the 7094 namespace 7095 root. This reverts a change introduced in version 20071019. The table is 7096 now 7097 loaded at the namespace root even though this goes against the ACPI 7098 specification. This provides compatibility with other ACPI 7099 implementations. 7100 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin 7101 Ming. 7102 7103 Fixed a problem where ACPICA would not Load() tables with unusual 7104 signatures. 7105 Now ignore ACPI table signature for Load() operator. Only "SSDT" is 7106 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 7107 Therefore, signature validation is worthless. Apparently MS ACPI accepts 7108 such 7109 signatures, ACPICA must be compatible. BZ 10454. 7110 7111 Fixed a possible negative array index in AcpiUtValidateException. Added 7112 NULL 7113 fields to the exception string arrays to eliminate a -1 subtraction on 7114 the 7115 SubStatus field. 7116 7117 Updated the debug tracking macros to reduce overall code and data size. 7118 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 7119 instead of pointers to static strings. Jan Beulich and Bob Moore. 7120 7121 Implemented argument count checking in control method invocation via 7122 AcpiEvaluateObject. Now emit an error if too few arguments, warning if 7123 too 7124 many. This applies only to extern programmatic control method execution, 7125 not 7126 method-to-method calls within the AML. Lin Ming. 7127 7128 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is 7129 no 7130 longer needed, especially with the removal of 16-bit support. It was 7131 replaced 7132 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 7133 bit 7134 on 7135 32/64-bit platforms is required. 7136 7137 Added the C const qualifier for appropriate string constants -- mostly 7138 MODULE_NAME and printf format strings. Jan Beulich. 7139 7140 Example Code and Data Size: These are the sizes for the OS-independent 7141 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7142 debug version of the code includes the debug output trace mechanism and 7143 has a 7144 much larger code and data size. 7145 7146 Previous Release: 7147 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 7148 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 7149 Current Release: 7150 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 7151 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 7152 7153 2) iASL Compiler/Disassembler and Tools: 7154 7155 Implemented ACPI table revision ID validation in the disassembler. Zero 7156 is 7157 always invalid. For DSDTs, the ID controls the interpreter integer width. 7158 1 7159 means 32-bit and this is unusual. 2 or greater is 64-bit. 7160 7161 ---------------------------------------- 7162 21 March 2008. Summary of changes for version 20080321: 7163 7164 1) ACPI CA Core Subsystem: 7165 7166 Implemented an additional change to the GPE support in order to suppress 7167 spurious or stray GPEs. The AcpiEvDisableGpe function will now 7168 permanently 7169 disable incoming GPEs that are neither enabled nor disabled -- meaning 7170 that 7171 the GPE is unknown to the system. This should prevent future interrupt 7172 floods 7173 from that GPE. BZ 6217 (Zhang Rui) 7174 7175 Fixed a problem where NULL package elements were not returned to the 7176 AcpiEvaluateObject interface correctly. The element was simply ignored 7177 instead of returning a NULL ACPI_OBJECT package element, potentially 7178 causing 7179 a buffer overflow and/or confusing the caller who expected a fixed number 7180 of 7181 elements. BZ 10132 (Lin Ming, Bob Moore) 7182 7183 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, 7184 Dword, 7185 Qword), Field, BankField, and IndexField operators when invoked from 7186 inside 7187 an executing control method. In this case, these operators created 7188 namespace 7189 nodes that were incorrectly left marked as permanent nodes instead of 7190 temporary nodes. This could cause a problem if there is race condition 7191 between an exiting control method and a running namespace walk. (Reported 7192 by 7193 Linn Crosetto) 7194 7195 Fixed a problem where the CreateField and CreateXXXField operators would 7196 incorrectly allow duplicate names (the name of the field) with no 7197 exception 7198 generated. 7199 7200 Implemented several changes for Notify handling. Added support for new 7201 Notify 7202 values (ACPI 2.0+) and improved the Notify debug output. Notify on 7203 PowerResource objects is no longer allowed, as per the ACPI 7204 specification. 7205 (Bob Moore, Zhang Rui) 7206 7207 All Reference Objects returned via the AcpiEvaluateObject interface are 7208 now 7209 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved 7210 for 7211 NULL objects - either NULL package elements or unresolved named 7212 references. 7213 7214 Fixed a problem where an extraneous debug message was produced for 7215 package 7216 objects (when debugging enabled). The message "Package List length larger 7217 than NumElements count" is now produced in the correct case, and is now 7218 an 7219 error message rather than a debug message. Added a debug message for the 7220 opposite case, where NumElements is larger than the Package List (the 7221 package 7222 will be padded out with NULL elements as per the ACPI spec.) 7223 7224 Implemented several improvements for the output of the ASL "Debug" object 7225 to 7226 clarify and keep all data for a given object on one output line. 7227 7228 Fixed two size calculation issues with the variable-length Start 7229 Dependent 7230 resource descriptor. 7231 7232 Example Code and Data Size: These are the sizes for the OS-independent 7233 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7234 debug version of the code includes the debug output trace mechanism and 7235 has 7236 a much larger code and data size. 7237 7238 Previous Release: 7239 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 7240 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 7241 Current Release: 7242 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 7243 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 7244 7245 2) iASL Compiler/Disassembler and Tools: 7246 7247 Fixed a problem with the use of the Switch operator where execution of 7248 the 7249 containing method by multiple concurrent threads could cause an 7250 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 7251 actual Switch opcode, it must be simulated with local named temporary 7252 variables and if/else pairs. The solution chosen was to mark any method 7253 that 7254 uses Switch as Serialized, thus preventing multiple thread entries. BZ 7255 469. 7256 7257 ---------------------------------------- 7258 13 February 2008. Summary of changes for version 20080213: 7259 7260 1) ACPI CA Core Subsystem: 7261 7262 Implemented another MS compatibility design change for GPE/Notify 7263 handling. 7264 GPEs are now cleared/enabled asynchronously to allow all pending notifies 7265 to 7266 complete first. It is expected that the OSL will queue the enable request 7267 behind all pending notify requests (may require changes to the local host 7268 OSL 7269 in AcpiOsExecute). Alexey Starikovskiy. 7270 7271 Fixed a problem where buffer and package objects passed as arguments to a 7272 control method via the external AcpiEvaluateObject interface could cause 7273 an 7274 AE_AML_INTERNAL exception depending on the order and type of operators 7275 executed by the target control method. 7276 7277 Fixed a problem where resource descriptor size optimization could cause a 7278 problem when a _CRS resource template is passed to a _SRS method. The 7279 _SRS 7280 resource template must use the same descriptors (with the same size) as 7281 returned from _CRS. This change affects the following resource 7282 descriptors: 7283 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 7284 9487) 7285 7286 Fixed a problem where a CopyObject to RegionField, BankField, and 7287 IndexField 7288 objects did not perform an implicit conversion as it should. These types 7289 must 7290 retain their initial type permanently as per the ACPI specification. 7291 However, 7292 a CopyObject to all other object types should not perform an implicit 7293 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 7294 7295 Fixed a problem with the AcpiGetDevices interface where the mechanism to 7296 match device CIDs did not examine the entire list of available CIDs, but 7297 instead aborted on the first non-matching CID. Andrew Patterson. 7298 7299 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro 7300 was 7301 inadvertently changed to return a 16-bit value instead of a 32-bit value, 7302 truncating the upper dword of a 64-bit value. This macro is only used to 7303 display debug output, so no incorrect calculations were made. Also, 7304 reimplemented the macro so that a 64-bit shift is not performed by 7305 inefficient compilers. 7306 7307 Added missing va_end statements that should correspond with each va_start 7308 statement. 7309 7310 Example Code and Data Size: These are the sizes for the OS-independent 7311 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7312 debug version of the code includes the debug output trace mechanism and 7313 has 7314 a much larger code and data size. 7315 7316 Previous Release: 7317 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 7318 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 7319 Current Release: 7320 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 7321 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 7322 7323 2) iASL Compiler/Disassembler and Tools: 7324 7325 Implemented full disassembler support for the following new ACPI tables: 7326 BERT, EINJ, and ERST. Implemented partial disassembler support for the 7327 complicated HEST table. These tables support the Windows Hardware Error 7328 Architecture (WHEA). 7329 7330 ---------------------------------------- 7331 23 January 2008. Summary of changes for version 20080123: 7332 7333 1) ACPI CA Core Subsystem: 7334 7335 Added the 2008 copyright to all module headers and signons. This affects 7336 virtually every file in the ACPICA core subsystem, the iASL compiler, and 7337 the tools/utilities. 7338 7339 Fixed a problem with the SizeOf operator when used with Package and 7340 Buffer 7341 objects. These objects have deferred execution for some arguments, and 7342 the 7343 execution is now completed before the SizeOf is executed. This problem 7344 caused 7345 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) 7346 BZ 7347 9558 7348 7349 Implemented an enhancement to the interpreter "slack mode". In the 7350 absence 7351 of 7352 an explicit return or an implicitly returned object from the last 7353 executed 7354 opcode, a control method will now implicitly return an integer of value 0 7355 for 7356 Microsoft compatibility. (Lin Ming) BZ 392 7357 7358 Fixed a problem with the Load operator where an exception was not 7359 returned 7360 in 7361 the case where the table is already loaded. (Lin Ming) BZ 463 7362 7363 Implemented support for the use of DDBHandles as an Indexed Reference, as 7364 per 7365 the ACPI spec. (Lin Ming) BZ 486 7366 7367 Implemented support for UserTerm (Method invocation) for the Unload 7368 operator 7369 as per the ACPI spec. (Lin Ming) BZ 580 7370 7371 Fixed a problem with the LoadTable operator where the OemId and 7372 OemTableId 7373 input strings could cause unexpected failures if they were shorter than 7374 the 7375 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 7376 7377 Implemented support for UserTerm (Method invocation) for the Unload 7378 operator 7379 as per the ACPI spec. (Lin Ming) BZ 580 7380 7381 Implemented header file support for new ACPI tables - BERT, ERST, EINJ, 7382 HEST, 7383 IBFT, UEFI, WDAT. Disassembler support is forthcoming. 7384 7385 Example Code and Data Size: These are the sizes for the OS-independent 7386 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7387 debug version of the code includes the debug output trace mechanism and 7388 has 7389 a much larger code and data size. 7390 7391 Previous Release: 7392 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 7393 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 7394 Current Release: 7395 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 7396 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 7397 7398 2) iASL Compiler/Disassembler and Tools: 7399 7400 Implemented support in the disassembler for checksum validation on 7401 incoming 7402 binary DSDTs and SSDTs. If incorrect, a message is displayed within the 7403 table 7404 header dump at the start of the disassembly. 7405 7406 Implemented additional debugging information in the namespace listing 7407 file 7408 created during compilation. In addition to the namespace hierarchy, the 7409 full 7410 pathname to each namespace object is displayed. 7411 7412 Fixed a problem with the disassembler where invalid ACPI tables could 7413 cause 7414 faults or infinite loops. 7415 7416 Fixed an unexpected parse error when using the optional "parameter types" 7417 list in a control method declaration. (Lin Ming) BZ 397 7418 7419 Fixed a problem where two External declarations with the same name did 7420 not 7421 cause an error (Lin Ming) BZ 509 7422 7423 Implemented support for full TermArgs (adding Argx, Localx and method 7424 invocation) for the ParameterData parameter to the LoadTable operator. 7425 (Lin 7426 Ming) BZ 583,587 7427 7428 ---------------------------------------- 7429 19 December 2007. Summary of changes for version 20071219: 7430 7431 1) ACPI CA Core Subsystem: 7432 7433 Implemented full support for deferred execution for the TermArg string 7434 arguments for DataTableRegion. This enables forward references and full 7435 operand resolution for the three string arguments. Similar to 7436 OperationRegion 7437 deferred argument execution.) Lin Ming. BZ 430 7438 7439 Implemented full argument resolution support for the BankValue argument 7440 to 7441 BankField. Previously, only constants were supported, now any TermArg may 7442 be 7443 used. Lin Ming BZ 387, 393 7444 7445 Fixed a problem with AcpiGetDevices where the search of a branch of the 7446 device tree could be terminated prematurely. In accordance with the ACPI 7447 specification, the search down the current branch is terminated if a 7448 device 7449 is both not present and not functional (instead of just not present.) 7450 Yakui 7451 Zhao. 7452 7453 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly 7454 if 7455 the underlying AML code changed the GPE enable registers. Now, any 7456 unknown 7457 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately 7458 disabled 7459 instead of simply ignored. Rui Zhang. 7460 7461 Fixed a problem with Index Fields where the Index register was 7462 incorrectly 7463 limited to a maximum of 32 bits. Now any size may be used. 7464 7465 Fixed a couple memory leaks associated with "implicit return" objects 7466 when 7467 the AML Interpreter slack mode is enabled. Lin Ming BZ 349 7468 7469 Example Code and Data Size: These are the sizes for the OS-independent 7470 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7471 debug version of the code includes the debug output trace mechanism and 7472 has 7473 a much larger code and data size. 7474 7475 Previous Release: 7476 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 7477 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 7478 Current Release: 7479 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 7480 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 7481 7482 ---------------------------------------- 7483 14 November 2007. Summary of changes for version 20071114: 7484 7485 1) ACPI CA Core Subsystem: 7486 7487 Implemented event counters for each of the Fixed Events, the ACPI SCI 7488 (interrupt) itself, and control methods executed. Named 7489 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. 7490 These 7491 should be useful for debugging and statistics. 7492 7493 Implemented a new external interface, AcpiGetStatistics, to retrieve the 7494 contents of the various event counters. Returns the current values for 7495 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 7496 AcpiMethodCount. The interface can be expanded in the future if new 7497 counters 7498 are added. Device drivers should use this interface rather than access 7499 the 7500 counters directly. 7501 7502 Fixed a problem with the FromBCD and ToBCD operators. With some 7503 compilers, 7504 the ShortDivide function worked incorrectly, causing problems with the 7505 BCD 7506 functions with large input values. A truncation from 64-bit to 32-bit 7507 inadvertently occurred. Internal BZ 435. Lin Ming 7508 7509 Fixed a problem with Index references passed as method arguments. 7510 References 7511 passed as arguments to control methods were dereferenced immediately 7512 (before 7513 control was passed to the called method). The references are now 7514 correctly 7515 passed directly to the called method. BZ 5389. Lin Ming 7516 7517 Fixed a problem with CopyObject used in conjunction with the Index 7518 operator. 7519 The reference was incorrectly dereferenced before the copy. The reference 7520 is 7521 now correctly copied. BZ 5391. Lin Ming 7522 7523 Fixed a problem with Control Method references within Package objects. 7524 These 7525 references are now correctly generated. This completes the package 7526 construction overhaul that began in version 20071019. 7527 7528 Example Code and Data Size: These are the sizes for the OS-independent 7529 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7530 debug version of the code includes the debug output trace mechanism and 7531 has 7532 a much larger code and data size. 7533 7534 Previous Release: 7535 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 7536 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 7537 Current Release: 7538 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 7539 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 7540 7541 7542 2) iASL Compiler/Disassembler and Tools: 7543 7544 The AcpiExec utility now installs handlers for all of the predefined 7545 Operation Region types. New types supported are: PCI_Config, CMOS, and 7546 PCIBARTarget. 7547 7548 Fixed a problem with the 64-bit version of AcpiExec where the extended 7549 (64- 7550 bit) address fields for the DSDT and FACS within the FADT were not being 7551 used, causing truncation of the upper 32-bits of these addresses. Lin 7552 Ming 7553 and Bob Moore 7554 7555 ---------------------------------------- 7556 19 October 2007. Summary of changes for version 20071019: 7557 7558 1) ACPI CA Core Subsystem: 7559 7560 Fixed a problem with the Alias operator when the target of the alias is a 7561 named ASL operator that opens a new scope -- Scope, Device, 7562 PowerResource, 7563 Processor, and ThermalZone. In these cases, any children of the original 7564 operator could not be accessed via the alias, potentially causing 7565 unexpected 7566 AE_NOT_FOUND exceptions. (BZ 9067) 7567 7568 Fixed a problem with the Package operator where all named references were 7569 created as object references and left otherwise unresolved. According to 7570 the 7571 ACPI specification, a Package can only contain Data Objects or references 7572 to 7573 control methods. The implication is that named references to Data Objects 7574 (Integer, Buffer, String, Package, BufferField, Field) should be resolved 7575 immediately upon package creation. This is the approach taken with this 7576 change. References to all other named objects (Methods, Devices, Scopes, 7577 etc.) are all now properly created as reference objects. (BZ 5328) 7578 7579 Reverted a change to Notify handling that was introduced in version 7580 20070508. This version changed the Notify handling from asynchronous to 7581 fully synchronous (Device driver Notify handling with respect to the 7582 Notify 7583 ASL operator). It was found that this change caused more problems than it 7584 solved and was removed by most users. 7585 7586 Fixed a problem with the Increment and Decrement operators where the type 7587 of 7588 the target object could be unexpectedly and incorrectly changed. (BZ 353) 7589 Lin Ming. 7590 7591 Fixed a problem with the Load and LoadTable operators where the table 7592 location within the namespace was ignored. Instead, the table was always 7593 loaded into the root or current scope. Lin Ming. 7594 7595 Fixed a problem with the Load operator when loading a table from a buffer 7596 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 7597 7598 Fixed a problem with the Debug object where a store of a DdbHandle 7599 reference 7600 object to the Debug object could cause a fault. 7601 7602 Added a table checksum verification for the Load operator, in the case 7603 where 7604 the load is from a buffer. (BZ 578). 7605 7606 Implemented additional parameter validation for the LoadTable operator. 7607 The 7608 length of the input strings SignatureString, OemIdString, and OemTableId 7609 are 7610 now checked for maximum lengths. (BZ 582) Lin Ming. 7611 7612 Example Code and Data Size: These are the sizes for the OS-independent 7613 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7614 debug version of the code includes the debug output trace mechanism and 7615 has 7616 a much larger code and data size. 7617 7618 Previous Release: 7619 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 7620 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 7621 Current Release: 7622 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 7623 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 7624 7625 7626 2) iASL Compiler/Disassembler: 7627 7628 Fixed a problem where if a single file was specified and the file did not 7629 exist, no error message was emitted. (Introduced with wildcard support in 7630 version 20070917.) 7631 7632 ---------------------------------------- 7633 19 September 2007. Summary of changes for version 20070919: 7634 7635 1) ACPI CA Core Subsystem: 7636 7637 Designed and implemented new external interfaces to install and remove 7638 handlers for ACPI table-related events. Current events that are defined 7639 are 7640 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 7641 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 7642 AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 7643 7644 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 7645 (acpi_serialized option on Linux) could cause some systems to hang during 7646 initialization. (Bob Moore) BZ 8171 7647 7648 Fixed a problem where objects of certain types (Device, ThermalZone, 7649 Processor, PowerResource) can be not found if they are declared and 7650 referenced from within the same control method (Lin Ming) BZ 341 7651 7652 Example Code and Data Size: These are the sizes for the OS-independent 7653 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7654 debug version of the code includes the debug output trace mechanism and 7655 has 7656 a much larger code and data size. 7657 7658 Previous Release: 7659 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 7660 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 7661 Current Release: 7662 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 7663 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 7664 7665 7666 2) iASL Compiler/Disassembler: 7667 7668 Implemented support to allow multiple files to be compiled/disassembled 7669 in 7670 a 7671 single invocation. This includes command line wildcard support for both 7672 the 7673 Windows and Unix versions of the compiler. This feature simplifies the 7674 disassembly and compilation of multiple ACPI tables in a single 7675 directory. 7676 7677 ---------------------------------------- 7678 08 May 2007. Summary of changes for version 20070508: 7679 7680 1) ACPI CA Core Subsystem: 7681 7682 Implemented a Microsoft compatibility design change for the handling of 7683 the 7684 Notify AML operator. Previously, notify handlers were dispatched and 7685 executed completely asynchronously in a deferred thread. The new design 7686 still executes the notify handlers in a different thread, but the 7687 original 7688 thread that executed the Notify() now waits at a synchronization point 7689 for 7690 the notify handler to complete. Some machines depend on a synchronous 7691 Notify 7692 operator in order to operate correctly. 7693 7694 Implemented support to allow Package objects to be passed as method 7695 arguments to the external AcpiEvaluateObject interface. Previously, this 7696 would return the AE_NOT_IMPLEMENTED exception. This feature had not been 7697 implemented since there were no reserved control methods that required it 7698 until recently. 7699 7700 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs 7701 that 7702 contained invalid non-zero values in reserved fields could cause later 7703 failures because these fields have meaning in later revisions of the 7704 FADT. 7705 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The 7706 fields 7707 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 7708 7709 Fixed a problem where the Global Lock handle was not properly updated if 7710 a 7711 thread that acquired the Global Lock via executing AML code then 7712 attempted 7713 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by 7714 Joe 7715 Liu. 7716 7717 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 7718 could be corrupted if the interrupt being removed was at the head of the 7719 list. Reported by Linn Crosetto. 7720 7721 Example Code and Data Size: These are the sizes for the OS-independent 7722 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7723 debug version of the code includes the debug output trace mechanism and 7724 has 7725 a much larger code and data size. 7726 7727 Previous Release: 7728 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7729 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 7730 Current Release: 7731 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 7732 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 7733 7734 ---------------------------------------- 7735 20 March 2007. Summary of changes for version 20070320: 7736 7737 1) ACPI CA Core Subsystem: 7738 7739 Implemented a change to the order of interpretation and evaluation of AML 7740 operand objects within the AML interpreter. The interpreter now evaluates 7741 operands in the order that they appear in the AML stream (and the 7742 corresponding ASL code), instead of in the reverse order (after the 7743 entire 7744 operand list has been parsed). The previous behavior caused several 7745 subtle 7746 incompatibilities with the Microsoft AML interpreter as well as being 7747 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 7748 7749 Implemented a change to the ACPI Global Lock support. All interfaces to 7750 the 7751 global lock now allow the same thread to acquire the lock multiple times. 7752 This affects the AcpiAcquireGlobalLock external interface to the global 7753 lock 7754 as well as the internal use of the global lock to support AML fields -- a 7755 control method that is holding the global lock can now simultaneously 7756 access 7757 AML fields that require global lock protection. Previously, in both 7758 cases, 7759 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change 7760 to 7761 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 7762 Controller. There is no change to the behavior of the AML Acquire 7763 operator, 7764 as this can already be used to acquire a mutex multiple times by the same 7765 thread. BZ 8066. With assistance from Alexey Starikovskiy. 7766 7767 Fixed a problem where invalid objects could be referenced in the AML 7768 Interpreter after error conditions. During operand evaluation, ensure 7769 that 7770 the internal "Return Object" field is cleared on error and only valid 7771 pointers are stored there. Caused occasional access to deleted objects 7772 that 7773 resulted in "large reference count" warning messages. Valery Podrezov. 7774 7775 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur 7776 on 7777 deeply nested control method invocations. BZ 7873, local BZ 487. Valery 7778 Podrezov. 7779 7780 Fixed an internal problem with the handling of result objects on the 7781 interpreter result stack. BZ 7872. Valery Podrezov. 7782 7783 Removed obsolete code that handled the case where AML_NAME_OP is the 7784 target 7785 of a reference (Reference.Opcode). This code was no longer necessary. BZ 7786 7874. Valery Podrezov. 7787 7788 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This 7789 was 7790 a 7791 remnant from the previously discontinued 16-bit support. 7792 7793 Example Code and Data Size: These are the sizes for the OS-independent 7794 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7795 debug version of the code includes the debug output trace mechanism and 7796 has 7797 a much larger code and data size. 7798 7799 Previous Release: 7800 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7801 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7802 Current Release: 7803 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7804 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 7805 7806 ---------------------------------------- 7807 26 January 2007. Summary of changes for version 20070126: 7808 7809 1) ACPI CA Core Subsystem: 7810 7811 Added the 2007 copyright to all module headers and signons. This affects 7812 virtually every file in the ACPICA core subsystem, the iASL compiler, and 7813 the utilities. 7814 7815 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 7816 during a table load. A bad pointer was passed in the case where the DSDT 7817 is 7818 overridden, causing a fault in this case. 7819 7820 Example Code and Data Size: These are the sizes for the OS-independent 7821 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7822 debug version of the code includes the debug output trace mechanism and 7823 has 7824 a much larger code and data size. 7825 7826 Previous Release: 7827 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7828 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7829 Current Release: 7830 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7831 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7832 7833 ---------------------------------------- 7834 15 December 2006. Summary of changes for version 20061215: 7835 7836 1) ACPI CA Core Subsystem: 7837 7838 Support for 16-bit ACPICA has been completely removed since it is no 7839 longer 7840 necessary and it clutters the code. All 16-bit macros, types, and 7841 conditional compiles have been removed, cleaning up and simplifying the 7842 code 7843 across the entire subsystem. DOS support is no longer needed since the 7844 bootable Linux firmware kit is now available. 7845 7846 The handler for the Global Lock is now removed during AcpiTerminate to 7847 enable a clean subsystem restart, via the implementation of the 7848 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 7849 HP) 7850 7851 Implemented enhancements to the multithreading support within the 7852 debugger 7853 to enable improved multithreading debugging and evaluation of the 7854 subsystem. 7855 (Valery Podrezov) 7856 7857 Debugger: Enhanced the Statistics/Memory command to emit the total 7858 (maximum) 7859 memory used during the execution, as well as the maximum memory consumed 7860 by 7861 each of the various object types. (Valery Podrezov) 7862 7863 Example Code and Data Size: These are the sizes for the OS-independent 7864 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7865 debug version of the code includes the debug output trace mechanism and 7866 has 7867 a much larger code and data size. 7868 7869 Previous Release: 7870 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 7871 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 7872 Current Release: 7873 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7874 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7875 7876 7877 2) iASL Compiler/Disassembler and Tools: 7878 7879 AcpiExec: Implemented a new option (-m) to display full memory use 7880 statistics upon subsystem/program termination. (Valery Podrezov) 7881 7882 ---------------------------------------- 7883 09 November 2006. Summary of changes for version 20061109: 7884 7885 1) ACPI CA Core Subsystem: 7886 7887 Optimized the Load ASL operator in the case where the source operand is 7888 an 7889 operation region. Simply map the operation region memory, instead of 7890 performing a bytewise read. (Region must be of type SystemMemory, see 7891 below.) 7892 7893 Fixed the Load ASL operator for the case where the source operand is a 7894 region field. A buffer object is also allowed as the source operand. BZ 7895 480 7896 7897 Fixed a problem where the Load ASL operator allowed the source operand to 7898 be 7899 an operation region of any type. It is now restricted to regions of type 7900 SystemMemory, as per the ACPI specification. BZ 481 7901 7902 Additional cleanup and optimizations for the new Table Manager code. 7903 7904 AcpiEnable will now fail if all of the required ACPI tables are not 7905 loaded 7906 (FADT, FACS, DSDT). BZ 477 7907 7908 Added #pragma pack(8/4) to acobject.h to ensure that the structures in 7909 this 7910 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 7911 manually optimized to be aligned and will not work if it is byte-packed. 7912 7913 Example Code and Data Size: These are the sizes for the OS-independent 7914 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7915 debug version of the code includes the debug output trace mechanism and 7916 has 7917 a much larger code and data size. 7918 7919 Previous Release: 7920 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 7921 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 7922 Current Release: 7923 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 7924 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 7925 7926 7927 2) iASL Compiler/Disassembler and Tools: 7928 7929 Fixed a problem where the presence of the _OSI predefined control method 7930 within complex expressions could cause an internal compiler error. 7931 7932 AcpiExec: Implemented full region support for multiple address spaces. 7933 SpaceId is now part of the REGION object. BZ 429 7934 7935 ---------------------------------------- 7936 11 October 2006. Summary of changes for version 20061011: 7937 7938 1) ACPI CA Core Subsystem: 7939 7940 Completed an AML interpreter performance enhancement for control method 7941 execution. Previously a 2-pass parse/execution, control methods are now 7942 completely parsed and executed in a single pass. This improves overall 7943 interpreter performance by ~25%, reduces code size, and reduces CPU stack 7944 use. (Valery Podrezov + interpreter changes in version 20051202 that 7945 eliminated namespace loading during the pass one parse.) 7946 7947 Implemented _CID support for PCI Root Bridge detection. If the _HID does 7948 not 7949 match the predefined PCI Root Bridge IDs, the _CID list (if present) is 7950 now 7951 obtained and also checked for an ID match. 7952 7953 Implemented additional support for the PCI _ADR execution: upsearch until 7954 a 7955 device scope is found before executing _ADR. This allows PCI_Config 7956 operation regions to be declared locally within control methods 7957 underneath 7958 PCI device objects. 7959 7960 Fixed a problem with a possible race condition between threads executing 7961 AcpiWalkNamespace and the AML interpreter. This condition was removed by 7962 modifying AcpiWalkNamespace to (by default) ignore all temporary 7963 namespace 7964 entries created during any concurrent control method execution. An 7965 additional namespace race condition is known to exist between 7966 AcpiWalkNamespace and the Load/Unload ASL operators and is still under 7967 investigation. 7968 7969 Restructured the AML ParseLoop function, breaking it into several 7970 subfunctions in order to reduce CPU stack use and improve 7971 maintainability. 7972 (Mikhail Kouzmich) 7973 7974 AcpiGetHandle: Fix for parameter validation to detect invalid 7975 combinations 7976 of prefix handle and pathname. BZ 478 7977 7978 Example Code and Data Size: These are the sizes for the OS-independent 7979 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7980 debug version of the code includes the debug output trace mechanism and 7981 has 7982 a much larger code and data size. 7983 7984 Previous Release: 7985 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7986 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 7987 Current Release: 7988 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 7989 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 7990 7991 2) iASL Compiler/Disassembler and Tools: 7992 7993 Ported the -g option (get local ACPI tables) to the new ACPICA Table 7994 Manager 7995 to restore original behavior. 7996 7997 ---------------------------------------- 7998 27 September 2006. Summary of changes for version 20060927: 7999 8000 1) ACPI CA Core Subsystem: 8001 8002 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 8003 These functions now use a spinlock for mutual exclusion and the interrupt 8004 level indication flag is not needed. 8005 8006 Fixed a problem with the Global Lock where the lock could appear to be 8007 obtained before it is actually obtained. The global lock semaphore was 8008 inadvertently created with one unit instead of zero units. (BZ 464) 8009 Fiodor 8010 Suietov. 8011 8012 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue 8013 during 8014 a read from a buffer or region field. (BZ 458) Fiodor Suietov. 8015 8016 Example Code and Data Size: These are the sizes for the OS-independent 8017 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8018 debug version of the code includes the debug output trace mechanism and 8019 has 8020 a much larger code and data size. 8021 8022 Previous Release: 8023 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 8024 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 8025 Current Release: 8026 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 8027 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 8028 8029 8030 2) iASL Compiler/Disassembler and Tools: 8031 8032 Fixed a compilation problem with the pre-defined Resource Descriptor 8033 field 8034 names where an "object does not exist" error could be incorrectly 8035 generated 8036 if the parent ResourceTemplate pathname places the template within a 8037 different namespace scope than the current scope. (BZ 7212) 8038 8039 Fixed a problem where the compiler could hang after syntax errors 8040 detected 8041 in an ElseIf construct. (BZ 453) 8042 8043 Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 8044 operator. An incorrect output filename was produced when this parameter 8045 was 8046 a null string (""). Now, the original input filename is used as the AML 8047 output filename, with an ".aml" extension. 8048 8049 Implemented a generic batch command mode for the AcpiExec utility 8050 (execute 8051 any AML debugger command) (Valery Podrezov). 8052 8053 ---------------------------------------- 8054 12 September 2006. Summary of changes for version 20060912: 8055 8056 1) ACPI CA Core Subsystem: 8057 8058 Enhanced the implementation of the "serialized mode" of the interpreter 8059 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 8060 specified, instead of creating a serialization semaphore per control 8061 method, 8062 the interpreter lock is simply no longer released before a blocking 8063 operation during control method execution. This effectively makes the AML 8064 Interpreter single-threaded. The overhead of a semaphore per-method is 8065 eliminated. 8066 8067 Fixed a regression where an error was no longer emitted if a control 8068 method 8069 attempts to create 2 objects of the same name. This once again returns 8070 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism 8071 that 8072 will dynamically serialize the control method to possible prevent future 8073 errors. (BZ 440) 8074 8075 Integrated a fix for a problem with PCI Express HID detection in the PCI 8076 Config Space setup procedure. (BZ 7145) 8077 8078 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 8079 AcpiHwInitialize function - the FADT registers are now validated when the 8080 table is loaded. 8081 8082 Added two new warnings during FADT verification - 1) if the FADT is 8083 larger 8084 than the largest known FADT version, and 2) if there is a mismatch 8085 between 8086 a 8087 32-bit block address and the 64-bit X counterpart (when both are non- 8088 zero.) 8089 8090 Example Code and Data Size: These are the sizes for the OS-independent 8091 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8092 debug version of the code includes the debug output trace mechanism and 8093 has 8094 a much larger code and data size. 8095 8096 Previous Release: 8097 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 8098 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 8099 Current Release: 8100 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 8101 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 8102 8103 8104 2) iASL Compiler/Disassembler and Tools: 8105 8106 Fixed a problem with the implementation of the Switch() operator where 8107 the 8108 temporary variable was declared too close to the actual Switch, instead 8109 of 8110 at method level. This could cause a problem if the Switch() operator is 8111 within a while loop, causing an error on the second iteration. (BZ 460) 8112 8113 Disassembler - fix for error emitted for unknown type for target of scope 8114 operator. Now, ignore it and continue. 8115 8116 Disassembly of an FADT now verifies the input FADT and reports any errors 8117 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 8118 8119 Disassembly of raw data buffers with byte initialization data now 8120 prefixes 8121 each output line with the current buffer offset. 8122 8123 Disassembly of ASF! table now includes all variable-length data fields at 8124 the end of some of the subtables. 8125 8126 The disassembler now emits a comment if a buffer appears to be a 8127 ResourceTemplate, but cannot be disassembled as such because the EndTag 8128 does 8129 not appear at the very end of the buffer. 8130 8131 AcpiExec - Added the "-t" command line option to enable the serialized 8132 mode 8133 of the AML interpreter. 8134 8135 ---------------------------------------- 8136 31 August 2006. Summary of changes for version 20060831: 8137 8138 1) ACPI CA Core Subsystem: 8139 8140 Miscellaneous fixes for the Table Manager: 8141 - Correctly initialize internal common FADT for all 64-bit "X" fields 8142 - Fixed a couple table mapping issues during table load 8143 - Fixed a couple alignment issues for IA64 8144 - Initialize input array to zero in AcpiInitializeTables 8145 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 8146 AcpiGetTableByIndex 8147 8148 Change for GPE support: when a "wake" GPE is received, all wake GPEs are 8149 now 8150 immediately disabled to prevent the waking GPE from firing again and to 8151 prevent other wake GPEs from interrupting the wake process. 8152 8153 Added the AcpiGpeCount global that tracks the number of processed GPEs, 8154 to 8155 be used for debugging systems with a large number of ACPI interrupts. 8156 8157 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 8158 both the ACPICA headers and the disassembler. 8159 8160 Example Code and Data Size: These are the sizes for the OS-independent 8161 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8162 debug version of the code includes the debug output trace mechanism and 8163 has 8164 a much larger code and data size. 8165 8166 Previous Release: 8167 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 8168 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 8169 Current Release: 8170 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 8171 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 8172 8173 8174 2) iASL Compiler/Disassembler and Tools: 8175 8176 Disassembler support for the DMAR ACPI table. 8177 8178 ---------------------------------------- 8179 23 August 2006. Summary of changes for version 20060823: 8180 8181 1) ACPI CA Core Subsystem: 8182 8183 The Table Manager component has been completely redesigned and 8184 reimplemented. The new design is much simpler, and reduces the overall 8185 code 8186 and data size of the kernel-resident ACPICA by approximately 5%. Also, it 8187 is 8188 now possible to obtain the ACPI tables very early during kernel 8189 initialization, even before dynamic memory management is initialized. 8190 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 8191 8192 Obsolete ACPICA interfaces: 8193 8194 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel 8195 init 8196 time). 8197 - AcpiLoadTable: Not needed. 8198 - AcpiUnloadTable: Not needed. 8199 8200 New ACPICA interfaces: 8201 8202 - AcpiInitializeTables: Must be called before the table manager can be 8203 used. 8204 - AcpiReallocateRootTable: Used to transfer the root table to dynamically 8205 allocated memory after it becomes available. 8206 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI 8207 tables 8208 in the RSDT/XSDT. 8209 8210 Other ACPICA changes: 8211 8212 - AcpiGetTableHeader returns the actual mapped table header, not a copy. 8213 Use 8214 AcpiOsUnmapMemory to free this mapping. 8215 - AcpiGetTable returns the actual mapped table. The mapping is managed 8216 internally and must not be deleted by the caller. Use of this interface 8217 causes no additional dynamic memory allocation. 8218 - AcpiFindRootPointer: Support for physical addressing has been 8219 eliminated, 8220 it appeared to be unused. 8221 - The interface to AcpiOsMapMemory has changed to be consistent with the 8222 other allocation interfaces. 8223 - The interface to AcpiOsGetRootPointer has changed to eliminate 8224 unnecessary 8225 parameters. 8226 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 8227 64- 8228 bit platforms. Was previously 64 bits on all platforms. 8229 - The interface to the ACPI Global Lock acquire/release macros have 8230 changed 8231 slightly since ACPICA no longer keeps a local copy of the FACS with a 8232 constructed pointer to the actual global lock. 8233 8234 Porting to the new table manager: 8235 8236 - AcpiInitializeTables: Must be called once, and can be called anytime 8237 during the OS initialization process. It allows the host to specify an 8238 area 8239 of memory to be used to store the internal version of the RSDT/XSDT (root 8240 table). This allows the host to access ACPI tables before memory 8241 management 8242 is initialized and running. 8243 - AcpiReallocateRootTable: Can be called after memory management is 8244 running 8245 to copy the root table to a dynamically allocated array, freeing up the 8246 scratch memory specified in the call to AcpiInitializeTables. 8247 - AcpiSubsystemInitialize: This existing interface is independent of the 8248 Table Manager, and does not have to be called before the Table Manager 8249 can 8250 be used, it only must be called before the rest of ACPICA can be used. 8251 - ACPI Tables: Some changes have been made to the names and structure of 8252 the 8253 actbl.h and actbl1.h header files and may require changes to existing 8254 code. 8255 For example, bitfields have been completely removed because of their lack 8256 of 8257 portability across C compilers. 8258 - Update interfaces to the Global Lock acquire/release macros if local 8259 versions are used. (see acwin.h) 8260 8261 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 8262 8263 New files: tbfind.c 8264 8265 Example Code and Data Size: These are the sizes for the OS-independent 8266 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8267 debug version of the code includes the debug output trace mechanism and 8268 has 8269 a much larger code and data size. 8270 8271 Previous Release: 8272 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 8273 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 8274 Current Release: 8275 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 8276 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 8277 8278 8279 2) iASL Compiler/Disassembler and Tools: 8280 8281 No changes for this release. 8282 8283 ---------------------------------------- 8284 21 July 2006. Summary of changes for version 20060721: 8285 8286 1) ACPI CA Core Subsystem: 8287 8288 The full source code for the ASL test suite used to validate the iASL 8289 compiler and the ACPICA core subsystem is being released with the ACPICA 8290 source for the first time. The source is contained in a separate package 8291 and 8292 consists of over 1100 files that exercise all ASL/AML operators. The 8293 package 8294 should appear on the Intel/ACPI web site shortly. (Valery Podrezov, 8295 Fiodor 8296 Suietov) 8297 8298 Completed a new design and implementation for support of the ACPI Global 8299 Lock. On the OS side, the global lock is now treated as a standard AML 8300 mutex. Previously, multiple OS threads could "acquire" the global lock 8301 simultaneously. However, this could cause the BIOS to be starved out of 8302 the 8303 lock - especially in cases such as the Embedded Controller driver where 8304 there is a tight coupling between the OS and the BIOS. 8305 8306 Implemented an optimization for the ACPI Global Lock interrupt mechanism. 8307 The Global Lock interrupt handler no longer queues the execution of a 8308 separate thread to signal the global lock semaphore. Instead, the 8309 semaphore 8310 is signaled directly from the interrupt handler. 8311 8312 Implemented support within the AML interpreter for package objects that 8313 contain a larger AML length (package list length) than the package 8314 element 8315 count. In this case, the length of the package is truncated to match the 8316 package element count. Some BIOS code apparently modifies the package 8317 length 8318 on the fly, and this change supports this behavior. Provides 8319 compatibility 8320 with the MS AML interpreter. (With assistance from Fiodor Suietov) 8321 8322 Implemented a temporary fix for the BankValue parameter of a Bank Field 8323 to 8324 support all constant values, now including the Zero and One opcodes. 8325 Evaluation of this parameter must eventually be converted to a full 8326 TermArg 8327 evaluation. A not-implemented error is now returned (temporarily) for 8328 non- 8329 constant values for this parameter. 8330 8331 Fixed problem reports (Fiodor Suietov) integrated: 8332 - Fix for premature object deletion after CopyObject on Operation Region 8333 (BZ 8334 350) 8335 8336 Example Code and Data Size: These are the sizes for the OS-independent 8337 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8338 debug version of the code includes the debug output trace mechanism and 8339 has 8340 a much larger code and data size. 8341 8342 Previous Release: 8343 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 8344 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 8345 Current Release: 8346 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 8347 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 8348 8349 8350 2) iASL Compiler/Disassembler and Tools: 8351 8352 No changes for this release. 8353 8354 ---------------------------------------- 8355 07 July 2006. Summary of changes for version 20060707: 8356 8357 1) ACPI CA Core Subsystem: 8358 8359 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 8360 that do not allow the initialization of address pointers within packed 8361 structures - even though the hardware itself may support misaligned 8362 transfers. Some of the debug data structures are packed by default to 8363 minimize size. 8364 8365 Added an error message for the case where AcpiOsGetThreadId() returns 8366 zero. 8367 A non-zero value is required by the core ACPICA code to ensure the proper 8368 operation of AML mutexes and recursive control methods. 8369 8370 The DSDT is now the only ACPI table that determines whether the AML 8371 interpreter is in 32-bit or 64-bit mode. Not really a functional change, 8372 but 8373 the hooks for per-table 32/64 switching have been removed from the code. 8374 A 8375 clarification to the ACPI specification is forthcoming in ACPI 3.0B. 8376 8377 Fixed a possible leak of an OwnerID in the error path of 8378 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 8379 deletion to a single place in AcpiTbUninstallTable to correct possible 8380 leaks 8381 when using the AcpiTbDeleteTablesByType interface (with assistance from 8382 Lance Ortiz.) 8383 8384 Fixed a problem with Serialized control methods where the semaphore 8385 associated with the method could be over-signaled after multiple method 8386 invocations. 8387 8388 Fixed two issues with the locking of the internal namespace data 8389 structure. 8390 Both the Unload() operator and AcpiUnloadTable interface now lock the 8391 namespace during the namespace deletion associated with the table unload 8392 (with assistance from Linn Crosetto.) 8393 8394 Fixed problem reports (Valery Podrezov) integrated: 8395 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 8396 8397 Fixed problem reports (Fiodor Suietov) integrated: 8398 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 8399 - On Address Space handler deletion, needless deactivation call (BZ 374) 8400 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 8401 375) 8402 - Possible memory leak, Notify sub-objects of Processor, Power, 8403 ThermalZone 8404 (BZ 376) 8405 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 8406 - Minimum Length of RSDT should be validated (BZ 379) 8407 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 8408 Handler (BZ (380) 8409 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type 8410 loaded 8411 (BZ 381) 8412 8413 Example Code and Data Size: These are the sizes for the OS-independent 8414 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8415 debug version of the code includes the debug output trace mechanism and 8416 has 8417 a much larger code and data size. 8418 8419 Previous Release: 8420 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 8421 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 8422 Current Release: 8423 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 8424 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 8425 8426 8427 2) iASL Compiler/Disassembler and Tools: 8428 8429 Fixed problem reports: 8430 Compiler segfault when ASL contains a long (>1024) String declaration (BZ 8431 436) 8432 8433 ---------------------------------------- 8434 23 June 2006. Summary of changes for version 20060623: 8435 8436 1) ACPI CA Core Subsystem: 8437 8438 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 8439 allows the type to be customized to the host OS for improved efficiency 8440 (since a spinlock is usually a very small object.) 8441 8442 Implemented support for "ignored" bits in the ACPI registers. According 8443 to 8444 the ACPI specification, these bits should be preserved when writing the 8445 registers via a read/modify/write cycle. There are 3 bits preserved in 8446 this 8447 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 8448 8449 Implemented the initial deployment of new OSL mutex interfaces. Since 8450 some 8451 host operating systems have separate mutex and semaphore objects, this 8452 feature was requested. The base code now uses mutexes (and the new mutex 8453 interfaces) wherever a binary semaphore was used previously. However, for 8454 the current release, the mutex interfaces are defined as macros to map 8455 them 8456 to the existing semaphore interfaces. Therefore, no OSL changes are 8457 required 8458 at this time. (See acpiosxf.h) 8459 8460 Fixed several problems with the support for the control method SyncLevel 8461 parameter. The SyncLevel now works according to the ACPI specification 8462 and 8463 in concert with the Mutex SyncLevel parameter, since the current 8464 SyncLevel 8465 is a property of the executing thread. Mutual exclusion for control 8466 methods 8467 is now implemented with a mutex instead of a semaphore. 8468 8469 Fixed three instances of the use of the C shift operator in the bitfield 8470 support code (exfldio.c) to avoid the use of a shift value larger than 8471 the 8472 target data width. The behavior of C compilers is undefined in this case 8473 and 8474 can cause unpredictable results, and therefore the case must be detected 8475 and 8476 avoided. (Fiodor Suietov) 8477 8478 Added an info message whenever an SSDT or OEM table is loaded dynamically 8479 via the Load() or LoadTable() ASL operators. This should improve 8480 debugging 8481 capability since it will show exactly what tables have been loaded 8482 (beyond 8483 the tables present in the RSDT/XSDT.) 8484 8485 Example Code and Data Size: These are the sizes for the OS-independent 8486 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8487 debug version of the code includes the debug output trace mechanism and 8488 has 8489 a much larger code and data size. 8490 8491 Previous Release: 8492 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 8493 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 8494 Current Release: 8495 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 8496 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 8497 8498 8499 2) iASL Compiler/Disassembler and Tools: 8500 8501 No changes for this release. 8502 8503 ---------------------------------------- 8504 08 June 2006. Summary of changes for version 20060608: 8505 8506 1) ACPI CA Core Subsystem: 8507 8508 Converted the locking mutex used for the ACPI hardware to a spinlock. 8509 This 8510 change should eliminate all problems caused by attempting to acquire a 8511 semaphore at interrupt level, and it means that all ACPICA external 8512 interfaces that directly access the ACPI hardware can be safely called 8513 from 8514 interrupt level. OSL code that implements the semaphore interfaces should 8515 be 8516 able to eliminate any workarounds for being called at interrupt level. 8517 8518 Fixed a regression introduced in 20060526 where the ACPI device 8519 initialization could be prematurely aborted with an AE_NOT_FOUND if a 8520 device 8521 did not have an optional _INI method. 8522 8523 Fixed an IndexField issue where a write to the Data Register should be 8524 limited in size to the AccessSize (width) of the IndexField itself. (BZ 8525 433, 8526 Fiodor Suietov) 8527 8528 Fixed problem reports (Valery Podrezov) integrated: 8529 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 8530 8531 Fixed problem reports (Fiodor Suietov) integrated: 8532 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 8533 8534 Removed four global mutexes that were obsolete and were no longer being 8535 used. 8536 8537 Example Code and Data Size: These are the sizes for the OS-independent 8538 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8539 debug version of the code includes the debug output trace mechanism and 8540 has 8541 a much larger code and data size. 8542 8543 Previous Release: 8544 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 8545 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 8546 Current Release: 8547 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 8548 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 8549 8550 8551 2) iASL Compiler/Disassembler and Tools: 8552 8553 Fixed a fault when using -g option (get tables from registry) on Windows 8554 machines. 8555 8556 Fixed problem reports integrated: 8557 - Generate error if CreateField NumBits parameter is zero. (BZ 405) 8558 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 8559 Suietov) 8560 - Global table revision override (-r) is ignored (BZ 413) 8561 8562 ---------------------------------------- 8563 26 May 2006. Summary of changes for version 20060526: 8564 8565 1) ACPI CA Core Subsystem: 8566 8567 Restructured, flattened, and simplified the internal interfaces for 8568 namespace object evaluation - resulting in smaller code, less CPU stack 8569 use, 8570 and fewer interfaces. (With assistance from Mikhail Kouzmich) 8571 8572 Fixed a problem with the CopyObject operator where the first parameter 8573 was 8574 not typed correctly for the parser, interpreter, compiler, and 8575 disassembler. 8576 Caused various errors and unexpected behavior. 8577 8578 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 8579 produced incorrect results with some C compilers. Since the behavior of C 8580 compilers when the shift value is larger than the datatype width is 8581 apparently not well defined, the interpreter now detects this condition 8582 and 8583 simply returns zero as expected in all such cases. (BZ 395) 8584 8585 Fixed problem reports (Valery Podrezov) integrated: 8586 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 8587 - Allow interpreter to handle nested method declarations (BZ 5361) 8588 8589 Fixed problem reports (Fiodor Suietov) integrated: 8590 - AcpiTerminate doesn't free debug memory allocation list objects (BZ 8591 355) 8592 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 8593 356) 8594 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 8595 - Resource Manager should return AE_TYPE for non-device objects (BZ 358) 8596 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 8597 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 8598 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 8599 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 8600 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 8601 365) 8602 - Status of the Global Initialization Handler call not used (BZ 366) 8603 - Incorrect object parameter to Global Initialization Handler (BZ 367) 8604 8605 Example Code and Data Size: These are the sizes for the OS-independent 8606 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8607 debug version of the code includes the debug output trace mechanism and 8608 has 8609 a much larger code and data size. 8610 8611 Previous Release: 8612 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 8613 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 8614 Current Release: 8615 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 8616 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 8617 8618 8619 2) iASL Compiler/Disassembler and Tools: 8620 8621 Modified the parser to allow the names IO, DMA, and IRQ to be used as 8622 namespace identifiers with no collision with existing resource descriptor 8623 macro names. This provides compatibility with other ASL compilers and is 8624 most useful for disassembly/recompilation of existing tables without 8625 parse 8626 errors. (With assistance from Thomas Renninger) 8627 8628 Disassembler: fixed an incorrect disassembly problem with the 8629 DataTableRegion and CopyObject operators. Fixed a possible fault during 8630 disassembly of some Alias operators. 8631 8632 ---------------------------------------- 8633 12 May 2006. Summary of changes for version 20060512: 8634 8635 1) ACPI CA Core Subsystem: 8636 8637 Replaced the AcpiOsQueueForExecution interface with a new interface named 8638 AcpiOsExecute. The major difference is that the new interface does not 8639 have 8640 a Priority parameter, this appeared to be useless and has been replaced 8641 by 8642 a 8643 Type parameter. The Type tells the host what type of execution is being 8644 requested, such as global lock handler, notify handler, GPE handler, etc. 8645 This allows the host to queue and execute the request as appropriate for 8646 the 8647 request type, possibly using different work queues and different 8648 priorities 8649 for the various request types. This enables fixes for multithreading 8650 deadlock problems such as BZ #5534, and will require changes to all 8651 existing 8652 OS interface layers. (Alexey Starikovskiy and Bob Moore) 8653 8654 Fixed a possible memory leak associated with the support for the so- 8655 called 8656 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 8657 Suietov) 8658 8659 Fixed a problem with the Load() operator where a table load from an 8660 operation region could overwrite an internal table buffer by up to 7 8661 bytes 8662 and cause alignment faults on IPF systems. (With assistance from Luming 8663 Yu) 8664 8665 Example Code and Data Size: These are the sizes for the OS-independent 8666 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8667 debug version of the code includes the debug output trace mechanism and 8668 has 8669 a much larger code and data size. 8670 8671 Previous Release: 8672 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 8673 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 8674 Current Release: 8675 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 8676 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 8677 8678 8679 8680 2) iASL Compiler/Disassembler and Tools: 8681 8682 Disassembler: Implemented support to cross reference the internal 8683 namespace 8684 and automatically generate ASL External() statements for symbols not 8685 defined 8686 within the current table being disassembled. This will simplify the 8687 disassembly and recompilation of interdependent tables such as SSDTs 8688 since 8689 these statements will no longer have to be added manually. 8690 8691 Disassembler: Implemented experimental support to automatically detect 8692 invocations of external control methods and generate appropriate 8693 External() 8694 statements. This is problematic because the AML cannot be correctly 8695 parsed 8696 until the number of arguments for each control method is known. 8697 Currently, 8698 standalone method invocations and invocations as the source operand of a 8699 Store() statement are supported. 8700 8701 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 8702 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 8703 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 8704 more readable and likely closer to the original ASL source. 8705 8706 ---------------------------------------- 8707 21 April 2006. Summary of changes for version 20060421: 8708 8709 1) ACPI CA Core Subsystem: 8710 8711 Removed a device initialization optimization introduced in 20051216 where 8712 the _STA method was not run unless an _INI was also present for the same 8713 device. This optimization could cause problems because it could allow 8714 _INI 8715 methods to be run within a not-present device subtree. (If a not-present 8716 device had no _INI, _STA would not be run, the not-present status would 8717 not 8718 be discovered, and the children of the device would be incorrectly 8719 traversed.) 8720 8721 Implemented a new _STA optimization where namespace subtrees that do not 8722 contain _INI are identified and ignored during device initialization. 8723 Selectively running _STA can significantly improve boot time on large 8724 machines (with assistance from Len Brown.) 8725 8726 Implemented support for the device initialization case where the returned 8727 _STA flags indicate a device not-present but functioning. In this case, 8728 _INI 8729 is not run, but the device children are examined for presence, as per the 8730 ACPI specification. 8731 8732 Implemented an additional change to the IndexField support in order to 8733 conform to MS behavior. The value written to the Index Register is not 8734 simply a byte offset, it is a byte offset in units of the access width of 8735 the parent Index Field. (Fiodor Suietov) 8736 8737 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 8738 interface is called during the creation of all AML operation regions, and 8739 allows the host OS to exert control over what addresses it will allow the 8740 AML code to access. Operation Regions whose addresses are disallowed will 8741 cause a runtime exception when they are actually accessed (will not 8742 affect 8743 or abort table loading.) See oswinxf or osunixxf for an example 8744 implementation. 8745 8746 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 8747 interface allows the host OS to match the various "optional" 8748 interface/behavior strings for the _OSI predefined control method as 8749 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 8750 for an example implementation. 8751 8752 Restructured and corrected various problems in the exception handling 8753 code 8754 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 8755 (with assistance from Takayoshi Kochi.) 8756 8757 Modified the Linux source converter to ignore quoted string literals 8758 while 8759 converting identifiers from mixed to lower case. This will correct 8760 problems 8761 with the disassembler and other areas where such strings must not be 8762 modified. 8763 8764 The ACPI_FUNCTION_* macros no longer require quotes around the function 8765 name. This allows the Linux source converter to convert the names, now 8766 that 8767 the converter ignores quoted strings. 8768 8769 Example Code and Data Size: These are the sizes for the OS-independent 8770 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8771 debug version of the code includes the debug output trace mechanism and 8772 has 8773 a much larger code and data size. 8774 8775 Previous Release: 8776 8777 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 8778 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 8779 Current Release: 8780 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 8781 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 8782 8783 8784 2) iASL Compiler/Disassembler and Tools: 8785 8786 Implemented 3 new warnings for iASL, and implemented multiple warning 8787 levels 8788 (w2 flag). 8789 8790 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is 8791 not 8792 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 8793 check for the possible timeout, a warning is issued. 8794 8795 2) Useless operators: If an ASL operator does not specify an optional 8796 target 8797 operand and it also does not use the function return value from the 8798 operator, a warning is issued since the operator effectively does 8799 nothing. 8800 8801 3) Unreferenced objects: If a namespace object is created, but never 8802 referenced, a warning is issued. This is a warning level 2 since there 8803 are 8804 cases where this is ok, such as when a secondary table is loaded that 8805 uses 8806 the unreferenced objects. Even so, care is taken to only flag objects 8807 that 8808 don't look like they will ever be used. For example, the reserved methods 8809 (starting with an underscore) are usually not referenced because it is 8810 expected that the OS will invoke them. 8811 8812 ---------------------------------------- 8813 31 March 2006. Summary of changes for version 20060331: 8814 8815 1) ACPI CA Core Subsystem: 8816 8817 Implemented header file support for the following additional ACPI tables: 8818 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this 8819 support, 8820 all current and known ACPI tables are now defined in the ACPICA headers 8821 and 8822 are available for use by device drivers and other software. 8823 8824 Implemented support to allow tables that contain ACPI names with invalid 8825 characters to be loaded. Previously, this would cause the table load to 8826 fail, but since there are several known cases of such tables on existing 8827 machines, this change was made to enable ACPI support for them. Also, 8828 this 8829 matches the behavior of the Microsoft ACPI implementation. 8830 8831 Fixed a couple regressions introduced during the memory optimization in 8832 the 8833 20060317 release. The namespace node definition required additional 8834 reorganization and an internal datatype that had been changed to 8-bit 8835 was 8836 restored to 32-bit. (Valery Podrezov) 8837 8838 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 8839 could be passed through to AcpiOsReleaseObject which is unexpected. Such 8840 null pointers are now trapped and ignored, matching the behavior of the 8841 previous implementation before the deployment of AcpiOsReleaseObject. 8842 (Valery Podrezov, Fiodor Suietov) 8843 8844 Fixed a memory mapping leak during the deletion of a SystemMemory 8845 operation 8846 region where a cached memory mapping was not deleted. This became a 8847 noticeable problem for operation regions that are defined within 8848 frequently 8849 used control methods. (Dana Meyers) 8850 8851 Reorganized the ACPI table header files into two main files: one for the 8852 ACPI tables consumed by the ACPICA core, and another for the 8853 miscellaneous 8854 ACPI tables that are consumed by the drivers and other software. The 8855 various 8856 FADT definitions were merged into one common section and three different 8857 tables (ACPI 1.0, 1.0+, and 2.0) 8858 8859 Example Code and Data Size: These are the sizes for the OS-independent 8860 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8861 debug version of the code includes the debug output trace mechanism and 8862 has 8863 a much larger code and data size. 8864 8865 Previous Release: 8866 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 8867 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 8868 Current Release: 8869 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 8870 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 8871 8872 8873 2) iASL Compiler/Disassembler and Tools: 8874 8875 Disassembler: Implemented support to decode and format all non-AML ACPI 8876 tables (tables other than DSDTs and SSDTs.) This includes the new tables 8877 added to the ACPICA headers, therefore all current and known ACPI tables 8878 are 8879 supported. 8880 8881 Disassembler: The change to allow ACPI names with invalid characters also 8882 enables the disassembly of such tables. Invalid characters within names 8883 are 8884 changed to '*' to make the name printable; the iASL compiler will still 8885 generate an error for such names, however, since this is an invalid ACPI 8886 character. 8887 8888 Implemented an option for AcpiXtract (-a) to extract all tables found in 8889 the 8890 input file. The default invocation extracts only the DSDTs and SSDTs. 8891 8892 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 8893 makefile for the AcpiXtract utility. 8894 8895 ---------------------------------------- 8896 17 March 2006. Summary of changes for version 20060317: 8897 8898 1) ACPI CA Core Subsystem: 8899 8900 Implemented the use of a cache object for all internal namespace nodes. 8901 Since there are about 1000 static nodes in a typical system, this will 8902 decrease memory use for cache implementations that minimize per- 8903 allocation 8904 overhead (such as a slab allocator.) 8905 8906 Removed the reference count mechanism for internal namespace nodes, since 8907 it 8908 was deemed unnecessary. This reduces the size of each namespace node by 8909 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit 8910 case, 8911 and 32 bytes for the 64-bit case. 8912 8913 Optimized several internal data structures to reduce object size on 64- 8914 bit 8915 platforms by packing data within the 64-bit alignment. This includes the 8916 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 8917 instances corresponding to the namespace objects. 8918 8919 Added two new strings for the predefined _OSI method: "Windows 2001.1 8920 SP1" 8921 and "Windows 2006". 8922 8923 Split the allocation tracking mechanism out to a separate file, from 8924 utalloc.c to uttrack.c. This mechanism appears to be only useful for 8925 application-level code. Kernels may wish to not include uttrack.c in 8926 distributions. 8927 8928 Removed all remnants of the obsolete ACPI_REPORT_* macros and the 8929 associated 8930 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 8931 macros.) 8932 8933 Code and Data Size: These are the sizes for the acpica.lib produced by 8934 the 8935 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 8936 ACPI 8937 driver or OSPM code. The debug version of the code includes the debug 8938 output 8939 trace mechanism and has a much larger code and data size. Note that these 8940 values will vary depending on the efficiency of the compiler and the 8941 compiler options used during generation. 8942 8943 Previous Release: 8944 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8945 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 8946 Current Release: 8947 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 8948 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 8949 8950 8951 2) iASL Compiler/Disassembler and Tools: 8952 8953 Implemented an ANSI C version of the acpixtract utility. This version 8954 will 8955 automatically extract the DSDT and all SSDTs from the input acpidump text 8956 file and dump the binary output to separate files. It can also display a 8957 summary of the input file including the headers for each table found and 8958 will extract any single ACPI table, with any signature. (See 8959 source/tools/acpixtract) 8960 8961 ---------------------------------------- 8962 10 March 2006. Summary of changes for version 20060310: 8963 8964 1) ACPI CA Core Subsystem: 8965 8966 Tagged all external interfaces to the subsystem with the new 8967 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to 8968 assist 8969 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 8970 macro. The default definition is NULL. 8971 8972 Added the ACPI_THREAD_ID type for the return value from 8973 AcpiOsGetThreadId. 8974 This allows the host to define this as necessary to simplify kernel 8975 integration. The default definition is ACPI_NATIVE_UINT. 8976 8977 Fixed two interpreter problems related to error processing, the deletion 8978 of 8979 objects, and placing invalid pointers onto the internal operator result 8980 stack. BZ 6028, 6151 (Valery Podrezov) 8981 8982 Increased the reference count threshold where a warning is emitted for 8983 large 8984 reference counts in order to eliminate unnecessary warnings on systems 8985 with 8986 large namespaces (especially 64-bit.) Increased the value from 0x400 to 8987 0x800. 8988 8989 Due to universal disagreement as to the meaning of the 'c' in the 8990 calloc() 8991 function, the ACPI_MEM_CALLOCATE macro has been renamed to 8992 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 8993 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 8994 ACPI_FREE. 8995 8996 Code and Data Size: These are the sizes for the acpica.lib produced by 8997 the 8998 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 8999 ACPI 9000 driver or OSPM code. The debug version of the code includes the debug 9001 output 9002 trace mechanism and has a much larger code and data size. Note that these 9003 values will vary depending on the efficiency of the compiler and the 9004 compiler options used during generation. 9005 9006 Previous Release: 9007 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 9008 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 9009 Current Release: 9010 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 9011 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 9012 9013 9014 2) iASL Compiler/Disassembler: 9015 9016 Disassembler: implemented support for symbolic resource descriptor 9017 references. If a CreateXxxxField operator references a fixed offset 9018 within 9019 a 9020 resource descriptor, a name is assigned to the descriptor and the offset 9021 is 9022 translated to the appropriate resource tag and pathname. The addition of 9023 this support brings the disassembled code very close to the original ASL 9024 source code and helps eliminate run-time errors when the disassembled 9025 code 9026 is modified (and recompiled) in such a way as to invalidate the original 9027 fixed offsets. 9028 9029 Implemented support for a Descriptor Name as the last parameter to the 9030 ASL 9031 Register() macro. This parameter was inadvertently left out of the ACPI 9032 specification, and will be added for ACPI 3.0b. 9033 9034 Fixed a problem where the use of the "_OSI" string (versus the full path 9035 "\_OSI") caused an internal compiler error. ("No back ptr to op") 9036 9037 Fixed a problem with the error message that occurs when an invalid string 9038 is 9039 used for a _HID object (such as one with an embedded asterisk: 9040 "*PNP010A".) 9041 The correct message is now displayed. 9042 9043 ---------------------------------------- 9044 17 February 2006. Summary of changes for version 20060217: 9045 9046 1) ACPI CA Core Subsystem: 9047 9048 Implemented a change to the IndexField support to match the behavior of 9049 the 9050 Microsoft AML interpreter. The value written to the Index register is now 9051 a 9052 byte offset, no longer an index based upon the width of the Data 9053 register. 9054 This should fix IndexField problems seen on some machines where the Data 9055 register is not exactly one byte wide. The ACPI specification will be 9056 clarified on this point. 9057 9058 Fixed a problem where several resource descriptor types could overrun the 9059 internal descriptor buffer due to size miscalculation: VendorShort, 9060 VendorLong, and Interrupt. This was noticed on IA64 machines, but could 9061 affect all platforms. 9062 9063 Fixed a problem where individual resource descriptors were misaligned 9064 within 9065 the internal buffer, causing alignment faults on IA64 platforms. 9066 9067 Code and Data Size: These are the sizes for the acpica.lib produced by 9068 the 9069 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 9070 ACPI 9071 driver or OSPM code. The debug version of the code includes the debug 9072 output 9073 trace mechanism and has a much larger code and data size. Note that these 9074 values will vary depending on the efficiency of the compiler and the 9075 compiler options used during generation. 9076 9077 Previous Release: 9078 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 9079 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 9080 Current Release: 9081 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 9082 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 9083 9084 9085 2) iASL Compiler/Disassembler: 9086 9087 Implemented support for new reserved names: _WDG and _WED are Microsoft 9088 extensions for Windows Instrumentation Management, _TDL is a new ACPI- 9089 defined method (Throttling Depth Limit.) 9090 9091 Fixed a problem where a zero-length VendorShort or VendorLong resource 9092 descriptor was incorrectly emitted as a descriptor of length one. 9093 9094 ---------------------------------------- 9095 10 February 2006. Summary of changes for version 20060210: 9096 9097 1) ACPI CA Core Subsystem: 9098 9099 Removed a couple of extraneous ACPI_ERROR messages that appeared during 9100 normal execution. These became apparent after the conversion from 9101 ACPI_DEBUG_PRINT. 9102 9103 Fixed a problem where the CreateField operator could hang if the BitIndex 9104 or 9105 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 9106 9107 Fixed a problem where a DeRefOf operation on a buffer object incorrectly 9108 failed with an exception. This also fixes a couple of related RefOf and 9109 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 9110 9111 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead 9112 of 9113 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, 9114 BZ 9115 5480) 9116 9117 Implemented a memory cleanup at the end of the execution of each 9118 iteration 9119 of an AML While() loop, preventing the accumulation of outstanding 9120 objects. 9121 (Valery Podrezov, BZ 5427) 9122 9123 Eliminated a chunk of duplicate code in the object resolution code. 9124 (Valery 9125 Podrezov, BZ 5336) 9126 9127 Fixed several warnings during the 64-bit code generation. 9128 9129 The AcpiSrc source code conversion tool now inserts one line of 9130 whitespace 9131 after an if() statement that is followed immediately by a comment, 9132 improving 9133 readability of the Linux code. 9134 9135 Code and Data Size: The current and previous library sizes for the core 9136 subsystem are shown below. These are the code and data sizes for the 9137 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9138 These 9139 values do not include any ACPI driver or OSPM code. The debug version of 9140 the 9141 code includes the debug output trace mechanism and has a much larger code 9142 and data size. Note that these values will vary depending on the 9143 efficiency 9144 of the compiler and the compiler options used during generation. 9145 9146 Previous Release: 9147 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 9148 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 9149 Current Release: 9150 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 9151 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 9152 9153 9154 2) iASL Compiler/Disassembler: 9155 9156 Fixed a problem with the disassembly of a BankField operator with a 9157 complex 9158 expression for the BankValue parameter. 9159 9160 ---------------------------------------- 9161 27 January 2006. Summary of changes for version 20060127: 9162 9163 1) ACPI CA Core Subsystem: 9164 9165 Implemented support in the Resource Manager to allow unresolved 9166 namestring 9167 references within resource package objects for the _PRT method. This 9168 support 9169 is in addition to the previously implemented unresolved reference support 9170 within the AML parser. If the interpreter slack mode is enabled, these 9171 unresolved references will be passed through to the caller as a NULL 9172 package 9173 entry. 9174 9175 Implemented and deployed new macros and functions for error and warning 9176 messages across the subsystem. These macros are simpler and generate less 9177 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 9178 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 9179 macros remain defined to allow ACPI drivers time to migrate to the new 9180 macros. 9181 9182 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of 9183 the 9184 Acquire/Release Lock OSL interfaces. 9185 9186 Fixed a problem where Alias ASL operators are sometimes not correctly 9187 resolved, in both the interpreter and the iASL compiler. 9188 9189 Fixed several problems with the implementation of the 9190 ConcatenateResTemplate 9191 ASL operator. As per the ACPI specification, zero length buffers are now 9192 treated as a single EndTag. One-length buffers always cause a fatal 9193 exception. Non-zero length buffers that do not end with a full 2-byte 9194 EndTag 9195 cause a fatal exception. 9196 9197 Fixed a possible structure overwrite in the AcpiGetObjectInfo external 9198 interface. (With assistance from Thomas Renninger) 9199 9200 Code and Data Size: The current and previous library sizes for the core 9201 subsystem are shown below. These are the code and data sizes for the 9202 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9203 These 9204 values do not include any ACPI driver or OSPM code. The debug version of 9205 the 9206 code includes the debug output trace mechanism and has a much larger code 9207 and data size. Note that these values will vary depending on the 9208 efficiency 9209 of the compiler and the compiler options used during generation. 9210 9211 Previous Release: 9212 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 9213 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 9214 Current Release: 9215 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 9216 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 9217 9218 9219 2) iASL Compiler/Disassembler: 9220 9221 Fixed an internal error that was generated for any forward references to 9222 ASL 9223 Alias objects. 9224 9225 ---------------------------------------- 9226 13 January 2006. Summary of changes for version 20060113: 9227 9228 1) ACPI CA Core Subsystem: 9229 9230 Added 2006 copyright to all module headers and signons. This affects 9231 virtually every file in the ACPICA core subsystem, iASL compiler, and the 9232 utilities. 9233 9234 Enhanced the ACPICA error reporting in order to simplify user migration 9235 to 9236 the non-debug version of ACPICA. Replaced all instances of the 9237 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN 9238 debug 9239 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 9240 respectively. This preserves all error and warning messages in the non- 9241 debug 9242 version of the ACPICA code (this has been referred to as the "debug lite" 9243 option.) Over 200 cases were converted to create a total of over 380 9244 error/warning messages across the ACPICA code. This increases the code 9245 and 9246 data size of the default non-debug version of the code somewhat (about 9247 13K), 9248 but all error/warning reporting may be disabled if desired (and code 9249 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 9250 configuration option. The size of the debug version of ACPICA remains 9251 about 9252 the same. 9253 9254 Fixed a memory leak within the AML Debugger "Set" command. One object was 9255 not properly deleted for every successful invocation of the command. 9256 9257 Code and Data Size: The current and previous library sizes for the core 9258 subsystem are shown below. These are the code and data sizes for the 9259 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9260 These 9261 values do not include any ACPI driver or OSPM code. The debug version of 9262 the 9263 code includes the debug output trace mechanism and has a much larger code 9264 and data size. Note that these values will vary depending on the 9265 efficiency 9266 of the compiler and the compiler options used during generation. 9267 9268 Previous Release: 9269 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 9270 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 9271 Current Release: 9272 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 9273 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 9274 9275 9276 2) iASL Compiler/Disassembler: 9277 9278 The compiler now officially supports the ACPI 3.0a specification that was 9279 released on December 30, 2005. (Specification is available at 9280 www.acpi.info) 9281 9282 ---------------------------------------- 9283 16 December 2005. Summary of changes for version 20051216: 9284 9285 1) ACPI CA Core Subsystem: 9286 9287 Implemented optional support to allow unresolved names within ASL Package 9288 objects. A null object is inserted in the package when a named reference 9289 cannot be located in the current namespace. Enabled via the interpreter 9290 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on 9291 machines 9292 that contain such code. 9293 9294 Implemented an optimization to the initialization sequence that can 9295 improve 9296 boot time. During ACPI device initialization, the _STA method is now run 9297 if 9298 and only if the _INI method exists. The _STA method is used to determine 9299 if 9300 the device is present; An _INI can only be run if _STA returns present, 9301 but 9302 it is a waste of time to run the _STA method if the _INI does not exist. 9303 (Prototype and assistance from Dong Wei) 9304 9305 Implemented use of the C99 uintptr_t for the pointer casting macros if it 9306 is 9307 available in the current compiler. Otherwise, the default (void *) cast 9308 is 9309 used as before. 9310 9311 Fixed some possible memory leaks found within the execution path of the 9312 Break, Continue, If, and CreateField operators. (Valery Podrezov) 9313 9314 Fixed a problem introduced in the 20051202 release where an exception is 9315 generated during method execution if a control method attempts to declare 9316 another method. 9317 9318 Moved resource descriptor string constants that are used by both the AML 9319 disassembler and AML debugger to the common utilities directory so that 9320 these components are independent. 9321 9322 Implemented support in the AcpiExec utility (-e switch) to globally 9323 ignore 9324 exceptions during control method execution (method is not aborted.) 9325 9326 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 9327 generation. 9328 9329 Code and Data Size: The current and previous library sizes for the core 9330 subsystem are shown below. These are the code and data sizes for the 9331 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9332 These 9333 values do not include any ACPI driver or OSPM code. The debug version of 9334 the 9335 code includes the debug output trace mechanism and has a much larger code 9336 and data size. Note that these values will vary depending on the 9337 efficiency 9338 of the compiler and the compiler options used during generation. 9339 9340 Previous Release: 9341 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 9342 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 9343 Current Release: 9344 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 9345 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 9346 9347 9348 2) iASL Compiler/Disassembler: 9349 9350 Fixed a problem where a CPU stack overflow fault could occur if a 9351 recursive 9352 method call was made from within a Return statement. 9353 9354 ---------------------------------------- 9355 02 December 2005. Summary of changes for version 20051202: 9356 9357 1) ACPI CA Core Subsystem: 9358 9359 Modified the parsing of control methods to no longer create namespace 9360 objects during the first pass of the parse. Objects are now created only 9361 during the execute phase, at the moment the namespace creation operator 9362 is 9363 encountered in the AML (Name, OperationRegion, CreateByteField, etc.) 9364 This 9365 should eliminate ALREADY_EXISTS exceptions seen on some machines where 9366 reentrant control methods are protected by an AML mutex. The mutex will 9367 now 9368 correctly block multiple threads from attempting to create the same 9369 object 9370 more than once. 9371 9372 Increased the number of available Owner Ids for namespace object tracking 9373 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen 9374 on 9375 some machines with a large number of ACPI tables (either static or 9376 dynamic). 9377 9378 Fixed a problem with the AcpiExec utility where a fault could occur when 9379 the 9380 -b switch (batch mode) is used. 9381 9382 Enhanced the namespace dump routine to output the owner ID for each 9383 namespace object. 9384 9385 Code and Data Size: The current and previous library sizes for the core 9386 subsystem are shown below. These are the code and data sizes for the 9387 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9388 These 9389 values do not include any ACPI driver or OSPM code. The debug version of 9390 the 9391 code includes the debug output trace mechanism and has a much larger code 9392 and data size. Note that these values will vary depending on the 9393 efficiency 9394 of the compiler and the compiler options used during generation. 9395 9396 Previous Release: 9397 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 9398 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 9399 Current Release: 9400 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 9401 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 9402 9403 9404 2) iASL Compiler/Disassembler: 9405 9406 Fixed a parse error during compilation of certain Switch/Case constructs. 9407 To 9408 simplify the parse, the grammar now allows for multiple Default 9409 statements 9410 and this error is now detected and flagged during the analysis phase. 9411 9412 Disassembler: The disassembly now includes the contents of the original 9413 table header within a comment at the start of the file. This includes the 9414 name and version of the original ASL compiler. 9415 9416 ---------------------------------------- 9417 17 November 2005. Summary of changes for version 20051117: 9418 9419 1) ACPI CA Core Subsystem: 9420 9421 Fixed a problem in the AML parser where the method thread count could be 9422 decremented below zero if any errors occurred during the method parse 9423 phase. 9424 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some 9425 machines. 9426 This also fixed a related regression with the mechanism that detects and 9427 corrects methods that cannot properly handle reentrancy (related to the 9428 deployment of the new OwnerId mechanism.) 9429 9430 Eliminated the pre-parsing of control methods (to detect errors) during 9431 table load. Related to the problem above, this was causing unwind issues 9432 if 9433 any errors occurred during the parse, and it seemed to be overkill. A 9434 table 9435 load should not be aborted if there are problems with any single control 9436 method, thus rendering this feature rather pointless. 9437 9438 Fixed a problem with the new table-driven resource manager where an 9439 internal 9440 buffer overflow could occur for small resource templates. 9441 9442 Implemented a new external interface, AcpiGetVendorResource. This 9443 interface 9444 will find and return a vendor-defined resource descriptor within a _CRS 9445 or 9446 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn 9447 Helgaas. 9448 9449 Removed the length limit (200) on string objects as per the upcoming ACPI 9450 3.0A specification. This affects the following areas of the interpreter: 9451 1) 9452 any implicit conversion of a Buffer to a String, 2) a String object 9453 result 9454 of the ASL Concatentate operator, 3) the String object result of the ASL 9455 ToString operator. 9456 9457 Fixed a problem in the Windows OS interface layer (OSL) where a 9458 WAIT_FOREVER 9459 on a semaphore object would incorrectly timeout. This allows the 9460 multithreading features of the AcpiExec utility to work properly under 9461 Windows. 9462 9463 Updated the Linux makefiles for the iASL compiler and AcpiExec to include 9464 the recently added file named "utresrc.c". 9465 9466 Code and Data Size: The current and previous library sizes for the core 9467 subsystem are shown below. These are the code and data sizes for the 9468 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9469 These 9470 values do not include any ACPI driver or OSPM code. The debug version of 9471 the 9472 code includes the debug output trace mechanism and has a much larger code 9473 and data size. Note that these values will vary depending on the 9474 efficiency 9475 of the compiler and the compiler options used during generation. 9476 9477 Previous Release: 9478 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 9479 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 9480 Current Release: 9481 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 9482 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 9483 9484 9485 2) iASL Compiler/Disassembler: 9486 9487 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 9488 specification. For the iASL compiler, this means that string literals 9489 within 9490 the source ASL can be of any length. 9491 9492 Enhanced the listing output to dump the AML code for resource descriptors 9493 immediately after the ASL code for each descriptor, instead of in a block 9494 at 9495 the end of the entire resource template. 9496 9497 Enhanced the compiler debug output to dump the entire original parse tree 9498 constructed during the parse phase, before any transforms are applied to 9499 the 9500 tree. The transformed tree is dumped also. 9501 9502 ---------------------------------------- 9503 02 November 2005. Summary of changes for version 20051102: 9504 9505 1) ACPI CA Core Subsystem: 9506 9507 Modified the subsystem initialization sequence to improve GPE support. 9508 The 9509 GPE initialization has been split into two parts in order to defer 9510 execution 9511 of the _PRW methods (Power Resources for Wake) until after the hardware 9512 is 9513 fully initialized and the SCI handler is installed. This allows the _PRW 9514 methods to access fields protected by the Global Lock. This will fix 9515 systems 9516 where a NO_GLOBAL_LOCK exception has been seen during initialization. 9517 9518 Converted the ACPI internal object disassemble and display code within 9519 the 9520 AML debugger to fully table-driven operation, reducing code size and 9521 increasing maintainability. 9522 9523 Fixed a regression with the ConcatenateResTemplate() ASL operator 9524 introduced 9525 in the 20051021 release. 9526 9527 Implemented support for "local" internal ACPI object types within the 9528 debugger "Object" command and the AcpiWalkNamespace external interfaces. 9529 These local types include RegionFields, BankFields, IndexFields, Alias, 9530 and 9531 reference objects. 9532 9533 Moved common AML resource handling code into a new file, "utresrc.c". 9534 This 9535 code is shared by both the Resource Manager and the AML Debugger. 9536 9537 Code and Data Size: The current and previous library sizes for the core 9538 subsystem are shown below. These are the code and data sizes for the 9539 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9540 These 9541 values do not include any ACPI driver or OSPM code. The debug version of 9542 the 9543 code includes the debug output trace mechanism and has a much larger code 9544 and data size. Note that these values will vary depending on the 9545 efficiency 9546 of the compiler and the compiler options used during generation. 9547 9548 Previous Release: 9549 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 9550 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 9551 Current Release: 9552 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 9553 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 9554 9555 9556 2) iASL Compiler/Disassembler: 9557 9558 Fixed a problem with very large initializer lists (more than 4000 9559 elements) 9560 for both Buffer and Package objects where the parse stack could overflow. 9561 9562 Enhanced the pre-compile source code scan for non-ASCII characters to 9563 ignore 9564 characters within comment fields. The scan is now always performed and is 9565 no 9566 longer optional, detecting invalid characters within a source file 9567 immediately rather than during the parse phase or later. 9568 9569 Enhanced the ASL grammar definition to force early reductions on all 9570 list- 9571 style grammar elements so that the overall parse stack usage is greatly 9572 reduced. This should improve performance and reduce the possibility of 9573 parse 9574 stack overflow. 9575 9576 Eliminated all reduce/reduce conflicts in the iASL parser generation. 9577 Also, 9578 with the addition of a %expected statement, the compiler generates from 9579 source with no warnings. 9580 9581 Fixed a possible segment fault in the disassembler if the input filename 9582 does not contain a "dot" extension (Thomas Renninger). 9583 9584 ---------------------------------------- 9585 21 October 2005. Summary of changes for version 20051021: 9586 9587 1) ACPI CA Core Subsystem: 9588 9589 Implemented support for the EM64T and other x86-64 processors. This 9590 essentially entails recognizing that these processors support non-aligned 9591 memory transfers. Previously, all 64-bit processors were assumed to lack 9592 hardware support for non-aligned transfers. 9593 9594 Completed conversion of the Resource Manager to nearly full table-driven 9595 operation. Specifically, the resource conversion code (convert AML to 9596 internal format and the reverse) and the debug code to dump internal 9597 resource descriptors are fully table-driven, reducing code and data size 9598 and 9599 improving maintainability. 9600 9601 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag 9602 word 9603 on 64-bit processors instead of a fixed 32-bit word. (With assistance 9604 from 9605 Alexey Starikovskiy) 9606 9607 Implemented support within the resource conversion code for the Type- 9608 Specific byte within the various ACPI 3.0 *WordSpace macros. 9609 9610 Fixed some issues within the resource conversion code for the type- 9611 specific 9612 flags for both Memory and I/O address resource descriptors. For Memory, 9613 implemented support for the MTP and TTP flags. For I/O, split the TRS and 9614 TTP flags into two separate fields. 9615 9616 Code and Data Size: The current and previous library sizes for the core 9617 subsystem are shown below. These are the code and data sizes for the 9618 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9619 These 9620 values do not include any ACPI driver or OSPM code. The debug version of 9621 the 9622 code includes the debug output trace mechanism and has a much larger code 9623 and data size. Note that these values will vary depending on the 9624 efficiency 9625 of the compiler and the compiler options used during generation. 9626 9627 Previous Release: 9628 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 9629 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 9630 Current Release: 9631 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 9632 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 9633 9634 9635 9636 2) iASL Compiler/Disassembler: 9637 9638 Relaxed a compiler restriction that disallowed a ResourceIndex byte if 9639 the 9640 corresponding ResourceSource string was not also present in a resource 9641 descriptor declaration. This restriction caused problems with existing 9642 AML/ASL code that includes the Index byte without the string. When such 9643 AML 9644 was disassembled, it could not be compiled without modification. Further, 9645 the modified code created a resource template with a different size than 9646 the 9647 original, breaking code that used fixed offsets into the resource 9648 template 9649 buffer. 9650 9651 Removed a recent feature of the disassembler to ignore a lone 9652 ResourceIndex 9653 byte. This byte is now emitted if present so that the exact AML can be 9654 reproduced when the disassembled code is recompiled. 9655 9656 Improved comments and text alignment for the resource descriptor code 9657 emitted by the disassembler. 9658 9659 Implemented disassembler support for the ACPI 3.0 AccessSize field within 9660 a 9661 Register() resource descriptor. 9662 9663 ---------------------------------------- 9664 30 September 2005. Summary of changes for version 20050930: 9665 9666 1) ACPI CA Core Subsystem: 9667 9668 Completed a major overhaul of the Resource Manager code - specifically, 9669 optimizations in the area of the AML/internal resource conversion code. 9670 The 9671 code has been optimized to simplify and eliminate duplicated code, CPU 9672 stack 9673 use has been decreased by optimizing function parameters and local 9674 variables, and naming conventions across the manager have been 9675 standardized 9676 for clarity and ease of maintenance (this includes function, parameter, 9677 variable, and struct/typedef names.) The update may force changes in some 9678 driver code, depending on how resources are handled by the host OS. 9679 9680 All Resource Manager dispatch and information tables have been moved to a 9681 single location for clarity and ease of maintenance. One new file was 9682 created, named "rsinfo.c". 9683 9684 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 9685 guarantee that the argument is not evaluated twice, making them less 9686 prone 9687 to macro side-effects. However, since there exists the possibility of 9688 additional stack use if a particular compiler cannot optimize them (such 9689 as 9690 in the debug generation case), the original macros are optionally 9691 available. 9692 Note that some invocations of the return_VALUE macro may now cause size 9693 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided 9694 to 9695 eliminate these. (From Randy Dunlap) 9696 9697 Implemented a new mechanism to enable debug tracing for individual 9698 control 9699 methods. A new external interface, AcpiDebugTrace, is provided to enable 9700 this mechanism. The intent is to allow the host OS to easily enable and 9701 disable tracing for problematic control methods. This interface can be 9702 easily exposed to a user or debugger interface if desired. See the file 9703 psxface.c for details. 9704 9705 AcpiUtCallocate will now return a valid pointer if a length of zero is 9706 specified - a length of one is used and a warning is issued. This matches 9707 the behavior of AcpiUtAllocate. 9708 9709 Code and Data Size: The current and previous library sizes for the core 9710 subsystem are shown below. These are the code and data sizes for the 9711 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9712 These 9713 values do not include any ACPI driver or OSPM code. The debug version of 9714 the 9715 code includes the debug output trace mechanism and has a much larger code 9716 and data size. Note that these values will vary depending on the 9717 efficiency 9718 of the compiler and the compiler options used during generation. 9719 9720 Previous Release: 9721 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 9722 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 9723 Current Release: 9724 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 9725 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 9726 9727 9728 2) iASL Compiler/Disassembler: 9729 9730 A remark is issued if the effective compile-time length of a package or 9731 buffer is zero. Previously, this was a warning. 9732 9733 ---------------------------------------- 9734 16 September 2005. Summary of changes for version 20050916: 9735 9736 1) ACPI CA Core Subsystem: 9737 9738 Fixed a problem within the Resource Manager where support for the Generic 9739 Register descriptor was not fully implemented. This descriptor is now 9740 fully 9741 recognized, parsed, disassembled, and displayed. 9742 9743 Completely restructured the Resource Manager code to utilize table-driven 9744 dispatch and lookup, eliminating many of the large switch() statements. 9745 This 9746 reduces overall subsystem code size and code complexity. Affects the 9747 resource parsing and construction, disassembly, and debug dump output. 9748 9749 Cleaned up and restructured the debug dump output for all resource 9750 descriptors. Improved readability of the output and reduced code size. 9751 9752 Fixed a problem where changes to internal data structures caused the 9753 optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 9754 9755 Code and Data Size: The current and previous library sizes for the core 9756 subsystem are shown below. These are the code and data sizes for the 9757 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9758 These 9759 values do not include any ACPI driver or OSPM code. The debug version of 9760 the 9761 code includes the debug output trace mechanism and has a much larger code 9762 and data size. Note that these values will vary depending on the 9763 efficiency 9764 of the compiler and the compiler options used during generation. 9765 9766 Previous Release: 9767 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 9768 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 9769 Current Release: 9770 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 9771 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 9772 9773 9774 2) iASL Compiler/Disassembler: 9775 9776 Updated the disassembler to automatically insert an EndDependentFn() 9777 macro 9778 into the ASL stream if this macro is missing in the original AML code, 9779 simplifying compilation of the resulting ASL module. 9780 9781 Fixed a problem in the disassembler where a disassembled ResourceSource 9782 string (within a large resource descriptor) was not surrounded by quotes 9783 and 9784 not followed by a comma, causing errors when the resulting ASL module was 9785 compiled. Also, escape sequences within a ResourceSource string are now 9786 handled correctly (especially "\\") 9787 9788 ---------------------------------------- 9789 02 September 2005. Summary of changes for version 20050902: 9790 9791 1) ACPI CA Core Subsystem: 9792 9793 Fixed a problem with the internal Owner ID allocation and deallocation 9794 mechanisms for control method execution and recursive method invocation. 9795 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 9796 messages seen on some systems. Recursive method invocation depth is 9797 currently limited to 255. (Alexey Starikovskiy) 9798 9799 Completely eliminated all vestiges of support for the "module-level 9800 executable code" until this support is fully implemented and debugged. 9801 This 9802 should eliminate the NO_RETURN_VALUE exceptions seen during table load on 9803 some systems that invoke this support. 9804 9805 Fixed a problem within the resource manager code where the transaction 9806 flags 9807 for a 64-bit address descriptor were handled incorrectly in the type- 9808 specific flag byte. 9809 9810 Consolidated duplicate code within the address descriptor resource 9811 manager 9812 code, reducing overall subsystem code size. 9813 9814 Fixed a fault when using the AML debugger "disassemble" command to 9815 disassemble individual control methods. 9816 9817 Removed references to the "release_current" directory within the Unix 9818 release package. 9819 9820 Code and Data Size: The current and previous core subsystem library sizes 9821 are shown below. These are the code and data sizes for the acpica.lib 9822 produced by the Microsoft Visual C++ 6.0 compiler. These values do not 9823 include any ACPI driver or OSPM code. The debug version of the code 9824 includes 9825 the debug output trace mechanism and has a much larger code and data 9826 size. 9827 Note that these values will vary depending on the efficiency of the 9828 compiler 9829 and the compiler options used during generation. 9830 9831 Previous Release: 9832 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9833 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 9834 Current Release: 9835 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 9836 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 9837 9838 9839 2) iASL Compiler/Disassembler: 9840 9841 Implemented an error check for illegal duplicate values in the interrupt 9842 and 9843 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 9844 Interrupt(). 9845 9846 Implemented error checking for the Irq() and IrqNoFlags() macros to 9847 detect 9848 too many values in the interrupt list (16 max) and invalid values in the 9849 list (range 0 - 15) 9850 9851 The maximum length string literal within an ASL file is now restricted to 9852 200 characters as per the ACPI specification. 9853 9854 Fixed a fault when using the -ln option (generate namespace listing). 9855 9856 Implemented an error check to determine if a DescriptorName within a 9857 resource descriptor has already been used within the current scope. 9858 9859 ---------------------------------------- 9860 15 August 2005. Summary of changes for version 20050815: 9861 9862 1) ACPI CA Core Subsystem: 9863 9864 Implemented a full bytewise compare to determine if a table load request 9865 is 9866 attempting to load a duplicate table. The compare is performed if the 9867 table 9868 signatures and table lengths match. This will allow different tables with 9869 the same OEM Table ID and revision to be loaded - probably against the 9870 ACPI 9871 specification, but discovered in the field nonetheless. 9872 9873 Added the changes.txt logfile to each of the zipped release packages. 9874 9875 Code and Data Size: Current and previous core subsystem library sizes are 9876 shown below. These are the code and data sizes for the acpica.lib 9877 produced 9878 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9879 any ACPI driver or OSPM code. The debug version of the code includes the 9880 debug output trace mechanism and has a much larger code and data size. 9881 Note 9882 that these values will vary depending on the efficiency of the compiler 9883 and 9884 the compiler options used during generation. 9885 9886 Previous Release: 9887 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9888 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 9889 Current Release: 9890 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9891 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 9892 9893 9894 2) iASL Compiler/Disassembler: 9895 9896 Fixed a problem where incorrect AML code could be generated for Package 9897 objects if optimization is disabled (via the -oa switch). 9898 9899 Fixed a problem with where incorrect AML code is generated for variable- 9900 length packages when the package length is not specified and the number 9901 of 9902 initializer values is greater than 255. 9903 9904 9905 ---------------------------------------- 9906 29 July 2005. Summary of changes for version 20050729: 9907 9908 1) ACPI CA Core Subsystem: 9909 9910 Implemented support to ignore an attempt to install/load a particular 9911 ACPI 9912 table more than once. Apparently there exists BIOS code that repeatedly 9913 attempts to load the same SSDT upon certain events. With assistance from 9914 Venkatesh Pallipadi. 9915 9916 Restructured the main interface to the AML parser in order to correctly 9917 handle all exceptional conditions. This will prevent leakage of the 9918 OwnerId 9919 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on 9920 some 9921 machines. With assistance from Alexey Starikovskiy. 9922 9923 Support for "module level code" has been disabled in this version due to 9924 a 9925 number of issues that have appeared on various machines. The support can 9926 be 9927 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 9928 compilation. When the issues are fully resolved, the code will be enabled 9929 by 9930 default again. 9931 9932 Modified the internal functions for debug print support to define the 9933 FunctionName parameter as a (const char *) for compatibility with 9934 compiler 9935 built-in macros such as __FUNCTION__, etc. 9936 9937 Linted the entire ACPICA source tree for both 32-bit and 64-bit. 9938 9939 Implemented support to display an object count summary for the AML 9940 Debugger 9941 commands Object and Methods. 9942 9943 Code and Data Size: Current and previous core subsystem library sizes are 9944 shown below. These are the code and data sizes for the acpica.lib 9945 produced 9946 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9947 any ACPI driver or OSPM code. The debug version of the code includes the 9948 debug output trace mechanism and has a much larger code and data size. 9949 Note 9950 that these values will vary depending on the efficiency of the compiler 9951 and 9952 the compiler options used during generation. 9953 9954 Previous Release: 9955 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 9956 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 9957 Current Release: 9958 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9959 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 9960 9961 9962 2) iASL Compiler/Disassembler: 9963 9964 Fixed a regression that appeared in the 20050708 version of the compiler 9965 where an error message was inadvertently emitted for invocations of the 9966 _OSI 9967 reserved control method. 9968 9969 ---------------------------------------- 9970 08 July 2005. Summary of changes for version 20050708: 9971 9972 1) ACPI CA Core Subsystem: 9973 9974 The use of the CPU stack in the debug version of the subsystem has been 9975 considerably reduced. Previously, a debug structure was declared in every 9976 function that used the debug macros. This structure has been removed in 9977 favor of declaring the individual elements as parameters to the debug 9978 functions. This reduces the cumulative stack use during nested execution 9979 of 9980 ACPI function calls at the cost of a small increase in the code size of 9981 the 9982 debug version of the subsystem. With assistance from Alexey Starikovskiy 9983 and 9984 Len Brown. 9985 9986 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 9987 headers to define a macro that will return the current function name at 9988 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used 9989 by 9990 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 9991 compiler-dependent header, the function name is saved on the CPU stack 9992 (one 9993 pointer per function.) This mechanism is used because apparently there 9994 exists no standard ANSI-C defined macro that that returns the function 9995 name. 9996 9997 Redesigned and reimplemented the "Owner ID" mechanism used to track 9998 namespace objects created/deleted by ACPI tables and control method 9999 execution. A bitmap is now used to allocate and free the IDs, thus 10000 solving 10001 the wraparound problem present in the previous implementation. The size 10002 of 10003 the namespace node descriptor was reduced by 2 bytes as a result (Alexey 10004 Starikovskiy). 10005 10006 Removed the UINT32_BIT and UINT16_BIT types that were used for the 10007 bitfield 10008 flag definitions within the headers for the predefined ACPI tables. These 10009 have been replaced by UINT8_BIT in order to increase the code portability 10010 of 10011 the subsystem. If the use of UINT8 remains a problem, we may be forced to 10012 eliminate bitfields entirely because of a lack of portability. 10013 10014 Enhanced the performance of the AcpiUtUpdateObjectReference procedure. 10015 This 10016 is a frequently used function and this improvement increases the 10017 performance 10018 of the entire subsystem (Alexey Starikovskiy). 10019 10020 Fixed several possible memory leaks and the inverse - premature object 10021 deletion (Alexey Starikovskiy). 10022 10023 Code and Data Size: Current and previous core subsystem library sizes are 10024 shown below. These are the code and data sizes for the acpica.lib 10025 produced 10026 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10027 any ACPI driver or OSPM code. The debug version of the code includes the 10028 debug output trace mechanism and has a much larger code and data size. 10029 Note 10030 that these values will vary depending on the efficiency of the compiler 10031 and 10032 the compiler options used during generation. 10033 10034 Previous Release: 10035 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 10036 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 10037 Current Release: 10038 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 10039 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 10040 10041 ---------------------------------------- 10042 24 June 2005. Summary of changes for version 20050624: 10043 10044 1) ACPI CA Core Subsystem: 10045 10046 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 10047 the host-defined cache object. This allows the OSL implementation to 10048 define 10049 and type this object in any manner desired, simplifying the OSL 10050 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 10051 Linux, and should be defined in the OS-specific header file for other 10052 operating systems as required. 10053 10054 Changed the interface to AcpiOsAcquireObject to directly return the 10055 requested object as the function return (instead of ACPI_STATUS.) This 10056 change was made for performance reasons, since this is the purpose of the 10057 interface in the first place. AcpiOsAcquireObject is now similar to the 10058 AcpiOsAllocate interface. 10059 10060 Implemented a new AML debugger command named Businfo. This command 10061 displays 10062 information about all devices that have an associate _PRT object. The 10063 _ADR, 10064 _HID, _UID, and _CID are displayed for these devices. 10065 10066 Modified the initialization sequence in AcpiInitializeSubsystem to call 10067 the 10068 OSL interface AcpiOslInitialize first, before any local initialization. 10069 This 10070 change was required because the global initialization now calls OSL 10071 interfaces. 10072 10073 Enhanced the Dump command to display the entire contents of Package 10074 objects 10075 (including all sub-objects and their values.) 10076 10077 Restructured the code base to split some files because of size and/or 10078 because the code logically belonged in a separate file. New files are 10079 listed 10080 below. All makefiles and project files included in the ACPI CA release 10081 have 10082 been updated. 10083 utilities/utcache.c /* Local cache interfaces */ 10084 utilities/utmutex.c /* Local mutex support */ 10085 utilities/utstate.c /* State object support */ 10086 interpreter/parser/psloop.c /* Main AML parse loop */ 10087 10088 Code and Data Size: Current and previous core subsystem library sizes are 10089 shown below. These are the code and data sizes for the acpica.lib 10090 produced 10091 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10092 any ACPI driver or OSPM code. The debug version of the code includes the 10093 debug output trace mechanism and has a much larger code and data size. 10094 Note 10095 that these values will vary depending on the efficiency of the compiler 10096 and 10097 the compiler options used during generation. 10098 10099 Previous Release: 10100 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 10101 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 10102 Current Release: 10103 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 10104 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 10105 10106 10107 2) iASL Compiler/Disassembler: 10108 10109 Fixed a regression introduced in version 20050513 where the use of a 10110 Package 10111 object within a Case() statement caused a compile time exception. The 10112 original behavior has been restored (a Match() operator is emitted.) 10113 10114 ---------------------------------------- 10115 17 June 2005. Summary of changes for version 20050617: 10116 10117 1) ACPI CA Core Subsystem: 10118 10119 Moved the object cache operations into the OS interface layer (OSL) to 10120 allow 10121 the host OS to handle these operations if desired (for example, the Linux 10122 OSL will invoke the slab allocator). This support is optional; the 10123 compile 10124 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original 10125 cache 10126 code in the ACPI CA core. The new OSL interfaces are shown below. See 10127 utalloc.c for an example implementation, and acpiosxf.h for the exact 10128 interface definitions. With assistance from Alexey Starikovskiy. 10129 AcpiOsCreateCache 10130 AcpiOsDeleteCache 10131 AcpiOsPurgeCache 10132 AcpiOsAcquireObject 10133 AcpiOsReleaseObject 10134 10135 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to 10136 return 10137 and restore a flags parameter. This fits better with many OS lock models. 10138 Note: the current execution state (interrupt handler or not) is no longer 10139 passed to these interfaces. If necessary, the OSL must determine this 10140 state 10141 by itself, a simple and fast operation. With assistance from Alexey 10142 Starikovskiy. 10143 10144 Fixed a problem in the ACPI table handling where a valid XSDT was assumed 10145 present if the revision of the RSDP was 2 or greater. According to the 10146 ACPI 10147 specification, the XSDT is optional in all cases, and the table manager 10148 therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 10149 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs 10150 contain 10151 only the RSDT. 10152 10153 Fixed an interpreter problem with the Mid() operator in the case of an 10154 input 10155 string where the resulting output string is of zero length. It now 10156 correctly 10157 returns a valid, null terminated string object instead of a string object 10158 with a null pointer. 10159 10160 Fixed a problem with the control method argument handling to allow a 10161 store 10162 to an Arg object that already contains an object of type Device. The 10163 Device 10164 object is now correctly overwritten. Previously, an error was returned. 10165 10166 10167 Enhanced the debugger Find command to emit object values in addition to 10168 the 10169 found object pathnames. The output format is the same as the dump 10170 namespace 10171 command. 10172 10173 Enhanced the debugger Set command. It now has the ability to set the 10174 value 10175 of any Named integer object in the namespace (Previously, only method 10176 locals 10177 and args could be set.) 10178 10179 Code and Data Size: Current and previous core subsystem library sizes are 10180 shown below. These are the code and data sizes for the acpica.lib 10181 produced 10182 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10183 any ACPI driver or OSPM code. The debug version of the code includes the 10184 debug output trace mechanism and has a much larger code and data size. 10185 Note 10186 that these values will vary depending on the efficiency of the compiler 10187 and 10188 the compiler options used during generation. 10189 10190 Previous Release: 10191 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 10192 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 10193 Current Release: 10194 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 10195 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 10196 10197 10198 2) iASL Compiler/Disassembler: 10199 10200 Fixed a regression in the disassembler where if/else/while constructs 10201 were 10202 output incorrectly. This problem was introduced in the previous release 10203 (20050526). This problem also affected the single-step disassembly in the 10204 debugger. 10205 10206 Fixed a problem where compiling the reserved _OSI method would randomly 10207 (but 10208 rarely) produce compile errors. 10209 10210 Enhanced the disassembler to emit compilable code in the face of 10211 incorrect 10212 AML resource descriptors. If the optional ResourceSourceIndex is present, 10213 but the ResourceSource is not, do not emit the ResourceSourceIndex in the 10214 disassembly. Otherwise, the resulting code cannot be compiled without 10215 errors. 10216 10217 ---------------------------------------- 10218 26 May 2005. Summary of changes for version 20050526: 10219 10220 1) ACPI CA Core Subsystem: 10221 10222 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 10223 the module level (not within a control method.) These opcodes are 10224 executed 10225 exactly once at the time the table is loaded. This type of code was legal 10226 up 10227 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA 10228 in 10229 order to provide backwards compatibility with earlier BIOS 10230 implementations. 10231 This eliminates the "Encountered executable code at module level" warning 10232 that was previously generated upon detection of such code. 10233 10234 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 10235 inadvertently be generated during the lookup of namespace objects in the 10236 second pass parse of ACPI tables and control methods. It appears that 10237 this 10238 problem could occur during the resolution of forward references to 10239 namespace 10240 objects. 10241 10242 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 10243 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 10244 allows the deadlock detection debug code to be compiled out in the normal 10245 case, improving mutex performance (and overall subsystem performance) 10246 considerably. 10247 10248 Implemented a handful of miscellaneous fixes for possible memory leaks on 10249 error conditions and error handling control paths. These fixes were 10250 suggested by FreeBSD and the Coverity Prevent source code analysis tool. 10251 10252 Added a check for a null RSDT pointer in AcpiGetFirmwareTable 10253 (tbxfroot.c) 10254 to prevent a fault in this error case. 10255 10256 Code and Data Size: Current and previous core subsystem library sizes are 10257 shown below. These are the code and data sizes for the acpica.lib 10258 produced 10259 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10260 any ACPI driver or OSPM code. The debug version of the code includes the 10261 debug output trace mechanism and has a much larger code and data size. 10262 Note 10263 that these values will vary depending on the efficiency of the compiler 10264 and 10265 the compiler options used during generation. 10266 10267 Previous Release: 10268 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 10269 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 10270 Current Release: 10271 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 10272 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 10273 10274 10275 2) iASL Compiler/Disassembler: 10276 10277 Implemented support to allow Type 1 and Type 2 ASL operators to appear at 10278 the module level (not within a control method.) These operators will be 10279 executed once at the time the table is loaded. This type of code was 10280 legal 10281 up until the release of ACPI 2.0B (2002) and is now supported by the iASL 10282 compiler in order to provide backwards compatibility with earlier BIOS 10283 ASL 10284 code. 10285 10286 The ACPI integer width (specified via the table revision ID or the -r 10287 override, 32 or 64 bits) is now used internally during compile-time 10288 constant 10289 folding to ensure that constants are truncated to 32 bits if necessary. 10290 Previously, the revision ID value was only emitted in the AML table 10291 header. 10292 10293 An error message is now generated for the Mutex and Method operators if 10294 the 10295 SyncLevel parameter is outside the legal range of 0 through 15. 10296 10297 Fixed a problem with the Method operator ParameterTypes list handling 10298 (ACPI 10299 3.0). Previously, more than 2 types or 2 arguments generated a syntax 10300 error. 10301 The actual underlying implementation of method argument typechecking is 10302 still under development, however. 10303 10304 ---------------------------------------- 10305 13 May 2005. Summary of changes for version 20050513: 10306 10307 1) ACPI CA Core Subsystem: 10308 10309 Implemented support for PCI Express root bridges -- added support for 10310 device 10311 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 10312 10313 The interpreter now automatically truncates incoming 64-bit constants to 10314 32 10315 bits if currently executing out of a 32-bit ACPI table (Revision < 2). 10316 This 10317 also affects the iASL compiler constant folding. (Note: as per below, the 10318 iASL compiler no longer allows 64-bit constants within 32-bit tables.) 10319 10320 Fixed a problem where string and buffer objects with "static" pointers 10321 (pointers to initialization data within an ACPI table) were not handled 10322 consistently. The internal object copy operation now always copies the 10323 data 10324 to a newly allocated buffer, regardless of whether the source object is 10325 static or not. 10326 10327 Fixed a problem with the FromBCD operator where an implicit result 10328 conversion was improperly performed while storing the result to the 10329 target 10330 operand. Since this is an "explicit conversion" operator, the implicit 10331 conversion should never be performed on the output. 10332 10333 Fixed a problem with the CopyObject operator where a copy to an existing 10334 named object did not always completely overwrite the existing object 10335 stored 10336 at name. Specifically, a buffer-to-buffer copy did not delete the 10337 existing 10338 buffer. 10339 10340 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces 10341 and 10342 structs for consistency. 10343 10344 Code and Data Size: Current and previous core subsystem library sizes are 10345 shown below. These are the code and data sizes for the acpica.lib 10346 produced 10347 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10348 any ACPI driver or OSPM code. The debug version of the code includes the 10349 debug output trace mechanism and has a much larger code and data size. 10350 Note 10351 that these values will vary depending on the efficiency of the compiler 10352 and 10353 the compiler options used during generation. 10354 10355 Previous Release: 10356 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 10357 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 10358 Current Release: (Same sizes) 10359 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 10360 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 10361 10362 10363 2) iASL Compiler/Disassembler: 10364 10365 The compiler now emits a warning if an attempt is made to generate a 64- 10366 bit 10367 integer constant from within a 32-bit ACPI table (Revision < 2). The 10368 integer 10369 is truncated to 32 bits. 10370 10371 Fixed a problem with large package objects: if the static length of the 10372 package is greater than 255, the "variable length package" opcode is 10373 emitted. Previously, this caused an error. This requires an update to the 10374 ACPI spec, since it currently (incorrectly) states that packages larger 10375 than 10376 255 elements are not allowed. 10377 10378 The disassembler now correctly handles variable length packages and 10379 packages 10380 larger than 255 elements. 10381 10382 ---------------------------------------- 10383 08 April 2005. Summary of changes for version 20050408: 10384 10385 1) ACPI CA Core Subsystem: 10386 10387 Fixed three cases in the interpreter where an "index" argument to an ASL 10388 function was still (internally) 32 bits instead of the required 64 bits. 10389 This was the Index argument to the Index, Mid, and Match operators. 10390 10391 The "strupr" function is now permanently local (AcpiUtStrupr), since this 10392 is 10393 not a POSIX-defined function and not present in most kernel-level C 10394 libraries. All references to the C library strupr function have been 10395 removed 10396 from the headers. 10397 10398 Completed the deployment of static functions/prototypes. All prototypes 10399 with 10400 the static attribute have been moved from the headers to the owning C 10401 file. 10402 10403 Implemented an extract option (-e) for the AcpiBin utility (AML binary 10404 utility). This option allows the utility to extract individual ACPI 10405 tables 10406 from the output of AcpiDmp. It provides the same functionality of the 10407 acpixtract.pl perl script without the worry of setting the correct perl 10408 options. AcpiBin runs on Windows and has not yet been generated/validated 10409 in 10410 the Linux/Unix environment (but should be soon). 10411 10412 Updated and fixed the table dump option for AcpiBin (-d). This option 10413 converts a single ACPI table to a hex/ascii file, similar to the output 10414 of 10415 AcpiDmp. 10416 10417 Code and Data Size: Current and previous core subsystem library sizes are 10418 shown below. These are the code and data sizes for the acpica.lib 10419 produced 10420 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10421 any ACPI driver or OSPM code. The debug version of the code includes the 10422 debug output trace mechanism and has a much larger code and data size. 10423 Note 10424 that these values will vary depending on the efficiency of the compiler 10425 and 10426 the compiler options used during generation. 10427 10428 Previous Release: 10429 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 10430 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 10431 Current Release: 10432 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 10433 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 10434 10435 10436 2) iASL Compiler/Disassembler: 10437 10438 Disassembler fix: Added a check to ensure that the table length found in 10439 the 10440 ACPI table header within the input file is not longer than the actual 10441 input 10442 file size. This indicates some kind of file or table corruption. 10443 10444 ---------------------------------------- 10445 29 March 2005. Summary of changes for version 20050329: 10446 10447 1) ACPI CA Core Subsystem: 10448 10449 An error is now generated if an attempt is made to create a Buffer Field 10450 of 10451 length zero (A CreateField with a length operand of zero.) 10452 10453 The interpreter now issues a warning whenever executable code at the 10454 module 10455 level is detected during ACPI table load. This will give some idea of the 10456 prevalence of this type of code. 10457 10458 Implemented support for references to named objects (other than control 10459 methods) within package objects. 10460 10461 Enhanced package object output for the debug object. Package objects are 10462 now 10463 completely dumped, showing all elements. 10464 10465 Enhanced miscellaneous object output for the debug object. Any object can 10466 now be written to the debug object (for example, a device object can be 10467 written, and the type of the object will be displayed.) 10468 10469 The "static" qualifier has been added to all local functions across both 10470 the 10471 core subsystem and the iASL compiler. 10472 10473 The number of "long" lines (> 80 chars) within the source has been 10474 significantly reduced, by about 1/3. 10475 10476 Cleaned up all header files to ensure that all CA/iASL functions are 10477 prototyped (even static functions) and the formatting is consistent. 10478 10479 Two new header files have been added, acopcode.h and acnames.h. 10480 10481 Removed several obsolete functions that were no longer used. 10482 10483 Code and Data Size: Current and previous core subsystem library sizes are 10484 shown below. These are the code and data sizes for the acpica.lib 10485 produced 10486 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10487 any ACPI driver or OSPM code. The debug version of the code includes the 10488 debug output trace mechanism and has a much larger code and data size. 10489 Note 10490 that these values will vary depending on the efficiency of the compiler 10491 and 10492 the compiler options used during generation. 10493 10494 Previous Release: 10495 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10496 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 10497 Current Release: 10498 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 10499 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 10500 10501 10502 10503 2) iASL Compiler/Disassembler: 10504 10505 Fixed a problem with the resource descriptor generation/support. For the 10506 ResourceSourceIndex and the ResourceSource fields, both must be present, 10507 or 10508 both must be not present - can't have one without the other. 10509 10510 The compiler now returns non-zero from the main procedure if any errors 10511 have 10512 occurred during the compilation. 10513 10514 10515 ---------------------------------------- 10516 09 March 2005. Summary of changes for version 20050309: 10517 10518 1) ACPI CA Core Subsystem: 10519 10520 The string-to-buffer implicit conversion code has been modified again 10521 after 10522 a change to the ACPI specification. In order to match the behavior of 10523 the 10524 other major ACPI implementation, the target buffer is no longer truncated 10525 if 10526 the source string is smaller than an existing target buffer. This change 10527 requires an update to the ACPI spec, and should eliminate the recent 10528 AE_AML_BUFFER_LIMIT issues. 10529 10530 The "implicit return" support was rewritten to a new algorithm that 10531 solves 10532 the general case. Rather than attempt to determine when a method is about 10533 to 10534 exit, the result of every ASL operator is saved momentarily until the 10535 very 10536 next ASL operator is executed. Therefore, no matter how the method exits, 10537 there will always be a saved implicit return value. This feature is only 10538 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should 10539 eliminate 10540 AE_AML_NO_RETURN_VALUE errors when enabled. 10541 10542 Implemented implicit conversion support for the predicate (operand) of 10543 the 10544 If, Else, and While operators. String and Buffer arguments are 10545 automatically 10546 converted to Integers. 10547 10548 Changed the string-to-integer conversion behavior to match the new ACPI 10549 errata: "If no integer object exists, a new integer is created. The ASCII 10550 string is interpreted as a hexadecimal constant. Each string character is 10551 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 10552 with the first character as the most significant digit, and ending with 10553 the 10554 first non-hexadecimal character or end-of-string." This means that the 10555 first 10556 non-hex character terminates the conversion and this is the code that was 10557 changed. 10558 10559 Fixed a problem where the ObjectType operator would fail (fault) when 10560 used 10561 on an Index of a Package which pointed to a null package element. The 10562 operator now properly returns zero (Uninitialized) in this case. 10563 10564 Fixed a problem where the While operator used excessive memory by not 10565 properly popping the result stack during execution. There was no memory 10566 leak 10567 after execution, however. (Code provided by Valery Podrezov.) 10568 10569 Fixed a problem where references to control methods within Package 10570 objects 10571 caused the method to be invoked, instead of producing a reference object 10572 pointing to the method. 10573 10574 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) 10575 to 10576 improve performance and reduce code size. (Code provided by Alexey 10577 Starikovskiy.) 10578 10579 Code and Data Size: Current and previous core subsystem library sizes are 10580 shown below. These are the code and data sizes for the acpica.lib 10581 produced 10582 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10583 any ACPI driver or OSPM code. The debug version of the code includes the 10584 debug output trace mechanism and has a much larger code and data size. 10585 Note 10586 that these values will vary depending on the efficiency of the compiler 10587 and 10588 the compiler options used during generation. 10589 10590 Previous Release: 10591 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10592 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 10593 Current Release: 10594 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10595 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 10596 10597 10598 2) iASL Compiler/Disassembler: 10599 10600 Fixed a problem with the Return operator with no arguments. Since the AML 10601 grammar for the byte encoding requires an operand for the Return opcode, 10602 the 10603 compiler now emits a Return(Zero) for this case. An ACPI specification 10604 update has been written for this case. 10605 10606 For tables other than the DSDT, namepath optimization is automatically 10607 disabled. This is because SSDTs can be loaded anywhere in the namespace, 10608 the 10609 compiler has no knowledge of where, and thus cannot optimize namepaths. 10610 10611 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 10612 inadvertently omitted from the ACPI specification, and will require an 10613 update to the spec. 10614 10615 The source file scan for ASCII characters is now optional (-a). This 10616 change 10617 was made because some vendors place non-ascii characters within comments. 10618 However, the scan is simply a brute-force byte compare to ensure all 10619 characters in the file are in the range 0x00 to 0x7F. 10620 10621 Fixed a problem with the CondRefOf operator where the compiler was 10622 inappropriately checking for the existence of the target. Since the point 10623 of 10624 the operator is to check for the existence of the target at run-time, the 10625 compiler no longer checks for the target existence. 10626 10627 Fixed a problem where errors generated from the internal AML interpreter 10628 during constant folding were not handled properly, causing a fault. 10629 10630 Fixed a problem with overly aggressive range checking for the Stall 10631 operator. The valid range (max 255) is now only checked if the operand is 10632 of 10633 type Integer. All other operand types cannot be statically checked. 10634 10635 Fixed a problem where control method references within the RefOf, 10636 DeRefOf, 10637 and ObjectType operators were not treated properly. They are now treated 10638 as 10639 actual references, not method invocations. 10640 10641 Fixed and enhanced the "list namespace" option (-ln). This option was 10642 broken 10643 a number of releases ago. 10644 10645 Improved error handling for the Field, IndexField, and BankField 10646 operators. 10647 The compiler now cleanly reports and recovers from errors in the field 10648 component (FieldUnit) list. 10649 10650 Fixed a disassembler problem where the optional ResourceDescriptor fields 10651 TRS and TTP were not always handled correctly. 10652 10653 Disassembler - Comments in output now use "//" instead of "/*" 10654 10655 ---------------------------------------- 10656 28 February 2005. Summary of changes for version 20050228: 10657 10658 1) ACPI CA Core Subsystem: 10659 10660 Fixed a problem where the result of an Index() operator (an object 10661 reference) must increment the reference count on the target object for 10662 the 10663 life of the object reference. 10664 10665 Implemented AML Interpreter and Debugger support for the new ACPI 3.0 10666 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and 10667 WordSpace 10668 resource descriptors. 10669 10670 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 10671 Space Descriptor" string, indicating interpreter support for the 10672 descriptors 10673 above. 10674 10675 Implemented header support for the new ACPI 3.0 FADT flag bits. 10676 10677 Implemented header support for the new ACPI 3.0 PCI Express bits for the 10678 PM1 10679 status/enable registers. 10680 10681 Updated header support for the MADT processor local Apic struct and MADT 10682 platform interrupt source struct for new ACPI 3.0 fields. 10683 10684 Implemented header support for the SRAT and SLIT ACPI tables. 10685 10686 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" 10687 flag 10688 at runtime. 10689 10690 Code and Data Size: Current and previous core subsystem library sizes are 10691 shown below. These are the code and data sizes for the acpica.lib 10692 produced 10693 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10694 any ACPI driver or OSPM code. The debug version of the code includes the 10695 debug output trace mechanism and has a much larger code and data size. 10696 Note 10697 that these values will vary depending on the efficiency of the compiler 10698 and 10699 the compiler options used during generation. 10700 10701 Previous Release: 10702 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 10703 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 10704 Current Release: 10705 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10706 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 10707 10708 10709 2) iASL Compiler/Disassembler: 10710 10711 Fixed a problem with the internal 64-bit String-to-integer conversion 10712 with 10713 strings less than two characters long. 10714 10715 Fixed a problem with constant folding where the result of the Index() 10716 operator can not be considered a constant. This means that Index() cannot 10717 be 10718 a type3 opcode and this will require an update to the ACPI specification. 10719 10720 Disassembler: Implemented support for the TTP, MTP, and TRS resource 10721 descriptor fields. These fields were inadvertently ignored and not output 10722 in 10723 the disassembly of the resource descriptor. 10724 10725 10726 ---------------------------------------- 10727 11 February 2005. Summary of changes for version 20050211: 10728 10729 1) ACPI CA Core Subsystem: 10730 10731 Implemented ACPI 3.0 support for implicit conversion within the Match() 10732 operator. MatchObjects can now be of type integer, buffer, or string 10733 instead 10734 of just type integer. Package elements are implicitly converted to the 10735 type 10736 of the MatchObject. This change aligns the behavior of Match() with the 10737 behavior of the other logical operators (LLess(), etc.) It also requires 10738 an 10739 errata change to the ACPI specification as this support was intended for 10740 ACPI 3.0, but was inadvertently omitted. 10741 10742 Fixed a problem with the internal implicit "to buffer" conversion. 10743 Strings 10744 that are converted to buffers will cause buffer truncation if the string 10745 is 10746 smaller than the target buffer. Integers that are converted to buffers 10747 will 10748 not cause buffer truncation, only zero extension (both as per the ACPI 10749 spec.) The problem was introduced when code was added to truncate the 10750 buffer, but this should not be performed in all cases, only the string 10751 case. 10752 10753 Fixed a problem with the Buffer and Package operators where the 10754 interpreter 10755 would get confused if two such operators were used as operands to an ASL 10756 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 10757 stack was not being popped after the execution of these operators, 10758 resulting 10759 in an AE_NO_RETURN_VALUE exception. 10760 10761 Fixed a problem with constructs of the form Store(Index(...),...). The 10762 reference object returned from Index was inadvertently resolved to an 10763 actual 10764 value. This problem was introduced in version 20050114 when the behavior 10765 of 10766 Store() was modified to restrict the object types that can be used as the 10767 source operand (to match the ACPI specification.) 10768 10769 Reduced excessive stack use within the AcpiGetObjectInfo procedure. 10770 10771 Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 10772 10773 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 10774 10775 Code and Data Size: Current and previous core subsystem library sizes are 10776 shown below. These are the code and data sizes for the acpica.lib 10777 produced 10778 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10779 any ACPI driver or OSPM code. The debug version of the code includes the 10780 debug output trace mechanism and has a much larger code and data size. 10781 Note 10782 that these values will vary depending on the efficiency of the compiler 10783 and 10784 the compiler options used during generation. 10785 10786 Previous Release: 10787 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 10788 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 10789 Current Release: 10790 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 10791 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 10792 10793 10794 2) iASL Compiler/Disassembler: 10795 10796 Fixed a code generation problem in the constant folding optimization code 10797 where incorrect code was generated if a constant was reduced to a buffer 10798 object (i.e., a reduced type 5 opcode.) 10799 10800 Fixed a typechecking problem for the ToBuffer operator. Caused by an 10801 incorrect return type in the internal opcode information table. 10802 10803 ---------------------------------------- 10804 25 January 2005. Summary of changes for version 20050125: 10805 10806 1) ACPI CA Core Subsystem: 10807 10808 Fixed a recently introduced problem with the Global Lock where the 10809 underlying semaphore was not created. This problem was introduced in 10810 version 20050114, and caused an AE_AML_NO_OPERAND exception during an 10811 Acquire() operation on _GL. 10812 10813 The local object cache is now optional, and is disabled by default. Both 10814 AcpiExec and the iASL compiler enable the cache because they run in user 10815 mode and this enhances their performance. #define 10816 ACPI_ENABLE_OBJECT_CACHE 10817 to enable the local cache. 10818 10819 Fixed an issue in the internal function AcpiUtEvaluateObject concerning 10820 the 10821 optional "implicit return" support where an error was returned if no 10822 return 10823 object was expected, but one was implicitly returned. AE_OK is now 10824 returned 10825 in this case and the implicitly returned object is deleted. 10826 AcpiUtEvaluateObject is only occasionally used, and only to execute 10827 reserved 10828 methods such as _STA and _INI where the return type is known up front. 10829 10830 Fixed a few issues with the internal convert-to-integer code. It now 10831 returns 10832 an error if an attempt is made to convert a null string, a string of only 10833 blanks/tabs, or a zero-length buffer. This affects both implicit 10834 conversion 10835 and explicit conversion via the ToInteger() operator. 10836 10837 The internal debug code in AcpiUtAcquireMutex has been commented out. It 10838 is 10839 not needed for normal operation and should increase the performance of 10840 the 10841 entire subsystem. The code remains in case it is needed for debug 10842 purposes 10843 again. 10844 10845 The AcpiExec source and makefile are included in the Unix/Linux package 10846 for 10847 the first time. 10848 10849 Code and Data Size: Current and previous core subsystem library sizes are 10850 shown below. These are the code and data sizes for the acpica.lib 10851 produced 10852 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10853 any ACPI driver or OSPM code. The debug version of the code includes the 10854 debug output trace mechanism and has a much larger code and data size. 10855 Note 10856 that these values will vary depending on the efficiency of the compiler 10857 and 10858 the compiler options used during generation. 10859 10860 Previous Release: 10861 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 10862 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 10863 Current Release: 10864 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 10865 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 10866 10867 2) iASL Compiler/Disassembler: 10868 10869 Switch/Case support: A warning is now issued if the type of the Switch 10870 value 10871 cannot be determined at compile time. For example, Switch(Arg0) will 10872 generate the warning, and the type is assumed to be an integer. As per 10873 the 10874 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate 10875 the 10876 warning. 10877 10878 Switch/Case support: Implemented support for buffer and string objects as 10879 the switch value. This is an ACPI 3.0 feature, now that LEqual supports 10880 buffers and strings. 10881 10882 Switch/Case support: The emitted code for the LEqual() comparisons now 10883 uses 10884 the switch value as the first operand, not the second. The case value is 10885 now 10886 the second operand, and this allows the case value to be implicitly 10887 converted to the type of the switch value, not the other way around. 10888 10889 Switch/Case support: Temporary variables are now emitted immediately 10890 within 10891 the control method, not at the global level. This means that there are 10892 now 10893 36 temps available per-method, not 36 temps per-module as was the case 10894 with 10895 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 10896 10897 ---------------------------------------- 10898 14 January 2005. Summary of changes for version 20050114: 10899 10900 Added 2005 copyright to all module headers. This affects every module in 10901 the core subsystem, iASL compiler, and the utilities. 10902 10903 1) ACPI CA Core Subsystem: 10904 10905 Fixed an issue with the String-to-Buffer conversion code where the string 10906 null terminator was not included in the buffer after conversion, but 10907 there 10908 is existing ASL that assumes the string null terminator is included. This 10909 is 10910 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 10911 introduced in the previous version when the code was updated to correctly 10912 set the converted buffer size as per the ACPI specification. The ACPI 10913 spec 10914 is ambiguous and will be updated to specify that the null terminator must 10915 be 10916 included in the converted buffer. This also affects the ToBuffer() ASL 10917 operator. 10918 10919 Fixed a problem with the Mid() ASL/AML operator where it did not work 10920 correctly on Buffer objects. Newly created sub-buffers were not being 10921 marked 10922 as initialized. 10923 10924 10925 Fixed a problem in AcpiTbFindTable where incorrect string compares were 10926 performed on the OemId and OemTableId table header fields. These fields 10927 are 10928 not null terminated, so strncmp is now used instead of strcmp. 10929 10930 Implemented a restriction on the Store() ASL/AML operator to align the 10931 behavior with the ACPI specification. Previously, any object could be 10932 used 10933 as the source operand. Now, the only objects that may be used are 10934 Integers, 10935 Buffers, Strings, Packages, Object References, and DDB Handles. If 10936 necessary, the original behavior can be restored by enabling the 10937 EnableInterpreterSlack flag. 10938 10939 Enhanced the optional "implicit return" support to allow an implicit 10940 return 10941 value from methods that are invoked externally via the AcpiEvaluateObject 10942 interface. This enables implicit returns from the _STA and _INI methods, 10943 for example. 10944 10945 Changed the Revision() ASL/AML operator to return the current version of 10946 the 10947 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly 10948 returned 10949 the supported ACPI version (This is the function of the _REV method). 10950 10951 Updated the _REV predefined method to return the currently supported 10952 version 10953 of ACPI, now 3. 10954 10955 Implemented batch mode option for the AcpiExec utility (-b). 10956 10957 Code and Data Size: Current and previous core subsystem library sizes are 10958 shown below. These are the code and data sizes for the acpica.lib 10959 produced 10960 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10961 any ACPI driver or OSPM code. The debug version of the code includes the 10962 debug output trace mechanism and has a much larger code and data size. 10963 Note 10964 that these values will vary depending on the efficiency of the compiler 10965 and 10966 the compiler options used during generation. 10967 10968 Previous Release: 10969 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10970 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 10971 Current Release: 10972 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 10973 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 10974 10975 ---------------------------------------- 10976 10 December 2004. Summary of changes for version 20041210: 10977 10978 ACPI 3.0 support is nearing completion in both the iASL compiler and the 10979 ACPI CA core subsystem. 10980 10981 1) ACPI CA Core Subsystem: 10982 10983 Fixed a problem in the ToDecimalString operator where the resulting 10984 string 10985 length was incorrectly calculated. The length is now calculated exactly, 10986 eliminating incorrect AE_STRING_LIMIT exceptions. 10987 10988 Fixed a problem in the ToHexString operator to allow a maximum 200 10989 character 10990 string to be produced. 10991 10992 Fixed a problem in the internal string-to-buffer and buffer-to-buffer 10993 copy 10994 routine where the length of the resulting buffer was not truncated to the 10995 new size (if the target buffer already existed). 10996 10997 Code and Data Size: Current and previous core subsystem library sizes are 10998 shown below. These are the code and data sizes for the acpica.lib 10999 produced 11000 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11001 any ACPI driver or OSPM code. The debug version of the code includes the 11002 debug output trace mechanism and has a much larger code and data size. 11003 Note 11004 that these values will vary depending on the efficiency of the compiler 11005 and 11006 the compiler options used during generation. 11007 11008 Previous Release: 11009 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11010 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 11011 Current Release: 11012 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11013 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 11014 11015 11016 2) iASL Compiler/Disassembler: 11017 11018 Implemented the new ACPI 3.0 resource template macros - DWordSpace, 11019 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 11020 Includes support in the disassembler. 11021 11022 Implemented support for the new (ACPI 3.0) parameter to the Register 11023 macro, 11024 AccessSize. 11025 11026 Fixed a problem where the _HE resource name for the Interrupt macro was 11027 referencing bit 0 instead of bit 1. 11028 11029 Implemented check for maximum 255 interrupts in the Interrupt macro. 11030 11031 Fixed a problem with the predefined resource descriptor names where 11032 incorrect AML code was generated if the offset within the resource buffer 11033 was 0 or 1. The optimizer shortened the AML code to a single byte opcode 11034 but did not update the surrounding package lengths. 11035 11036 Changes to the Dma macro: All channels within the channel list must be 11037 in 11038 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 11039 optional (default is BusMaster). 11040 11041 Implemented check for maximum 7 data bytes for the VendorShort macro. 11042 11043 The ReadWrite parameter is now optional for the Memory32 and similar 11044 macros. 11045 11046 ---------------------------------------- 11047 03 December 2004. Summary of changes for version 20041203: 11048 11049 1) ACPI CA Core Subsystem: 11050 11051 The low-level field insertion/extraction code (exfldio) has been 11052 completely 11053 rewritten to eliminate unnecessary complexity, bugs, and boundary 11054 conditions. 11055 11056 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and 11057 ToDecimalString 11058 operators where the input operand could be inadvertently deleted if no 11059 conversion was necessary (e.g., if the input to ToInteger was an Integer 11060 object.) 11061 11062 Fixed a problem with the ToDecimalString and ToHexString where an 11063 incorrect 11064 exception code was returned if the resulting string would be > 200 chars. 11065 AE_STRING_LIMIT is now returned. 11066 11067 Fixed a problem with the Concatenate operator where AE_OK was always 11068 returned, even if the operation failed. 11069 11070 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 11071 semaphores to be allocated. 11072 11073 Code and Data Size: Current and previous core subsystem library sizes are 11074 shown below. These are the code and data sizes for the acpica.lib 11075 produced 11076 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11077 any ACPI driver or OSPM code. The debug version of the code includes the 11078 debug output trace mechanism and has a much larger code and data size. 11079 Note 11080 that these values will vary depending on the efficiency of the compiler 11081 and 11082 the compiler options used during generation. 11083 11084 Previous Release: 11085 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 11086 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 11087 Current Release: 11088 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11089 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 11090 11091 11092 2) iASL Compiler/Disassembler: 11093 11094 Fixed typechecking for the ObjectType and SizeOf operators. Problem was 11095 recently introduced in 20041119. 11096 11097 Fixed a problem with the ToUUID macro where the upper nybble of each 11098 buffer 11099 byte was inadvertently set to zero. 11100 11101 ---------------------------------------- 11102 19 November 2004. Summary of changes for version 20041119: 11103 11104 1) ACPI CA Core Subsystem: 11105 11106 Fixed a problem in the internal ConvertToInteger routine where new 11107 integers 11108 were not truncated to 32 bits for 32-bit ACPI tables. This routine 11109 converts 11110 buffers and strings to integers. 11111 11112 Implemented support to store a value to an Index() on a String object. 11113 This 11114 is an ACPI 2.0 feature that had not yet been implemented. 11115 11116 Implemented new behavior for storing objects to individual package 11117 elements 11118 (via the Index() operator). The previous behavior was to invoke the 11119 implicit 11120 conversion rules if an object was already present at the index. The new 11121 behavior is to simply delete any existing object and directly store the 11122 new 11123 object. Although the ACPI specification seems unclear on this subject, 11124 other 11125 ACPI implementations behave in this manner. (This is the root of the 11126 AE_BAD_HEX_CONSTANT issue.) 11127 11128 Modified the RSDP memory scan mechanism to support the extended checksum 11129 for 11130 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 11131 RSDP signature is found with a valid checksum. 11132 11133 Code and Data Size: Current and previous core subsystem library sizes are 11134 shown below. These are the code and data sizes for the acpica.lib 11135 produced 11136 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11137 any ACPI driver or OSPM code. The debug version of the code includes the 11138 debug output trace mechanism and has a much larger code and data size. 11139 Note 11140 that these values will vary depending on the efficiency of the compiler 11141 and 11142 the compiler options used during generation. 11143 11144 Previous Release: 11145 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 11146 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 11147 Current Release: 11148 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 11149 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 11150 11151 11152 2) iASL Compiler/Disassembler: 11153 11154 Fixed a missing semicolon in the aslcompiler.y file. 11155 11156 ---------------------------------------- 11157 05 November 2004. Summary of changes for version 20041105: 11158 11159 1) ACPI CA Core Subsystem: 11160 11161 Implemented support for FADT revision 2. This was an interim table 11162 (between 11163 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 11164 11165 Implemented optional support to allow uninitialized LocalX and ArgX 11166 variables in a control method. The variables are initialized to an 11167 Integer 11168 object with a value of zero. This support is enabled by setting the 11169 AcpiGbl_EnableInterpreterSlack flag to TRUE. 11170 11171 Implemented support for Integer objects for the SizeOf operator. Either 11172 4 11173 or 8 is returned, depending on the current integer size (32-bit or 64- 11174 bit, 11175 depending on the parent table revision). 11176 11177 Fixed a problem in the implementation of the SizeOf and ObjectType 11178 operators 11179 where the operand was resolved to a value too early, causing incorrect 11180 return values for some objects. 11181 11182 Fixed some possible memory leaks during exceptional conditions. 11183 11184 Code and Data Size: Current and previous core subsystem library sizes are 11185 shown below. These are the code and data sizes for the acpica.lib 11186 produced 11187 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11188 any ACPI driver or OSPM code. The debug version of the code includes the 11189 debug output trace mechanism and has a much larger code and data size. 11190 Note 11191 that these values will vary depending on the efficiency of the compiler 11192 and 11193 the compiler options used during generation. 11194 11195 Previous Release: 11196 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 11197 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 11198 Current Release: 11199 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 11200 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 11201 11202 11203 2) iASL Compiler/Disassembler: 11204 11205 Implemented support for all ACPI 3.0 reserved names and methods. 11206 11207 Implemented all ACPI 3.0 grammar elements in the front-end, including 11208 support for semicolons. 11209 11210 Implemented the ACPI 3.0 Function() and ToUUID() macros 11211 11212 Fixed a problem in the disassembler where a Scope() operator would not be 11213 emitted properly if the target of the scope was in another table. 11214 11215 ---------------------------------------- 11216 15 October 2004. Summary of changes for version 20041015: 11217 11218 Note: ACPI CA is currently undergoing an in-depth and complete formal 11219 evaluation to test/verify the following areas. Other suggestions are 11220 welcome. This will result in an increase in the frequency of releases and 11221 the number of bug fixes in the next few months. 11222 - Functional tests for all ASL/AML operators 11223 - All implicit/explicit type conversions 11224 - Bit fields and operation regions 11225 - 64-bit math support and 32-bit-only "truncated" math support 11226 - Exceptional conditions, both compiler and interpreter 11227 - Dynamic object deletion and memory leaks 11228 - ACPI 3.0 support when implemented 11229 - External interfaces to the ACPI subsystem 11230 11231 11232 1) ACPI CA Core Subsystem: 11233 11234 Fixed two alignment issues on 64-bit platforms - within debug statements 11235 in 11236 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the 11237 Address 11238 field within the non-aligned ACPI generic address structure. 11239 11240 Fixed a problem in the Increment and Decrement operators where incorrect 11241 operand resolution could result in the inadvertent modification of the 11242 original integer when the integer is passed into another method as an 11243 argument and the arg is then incremented/decremented. 11244 11245 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64- 11246 bit 11247 BCD number were truncated during conversion. 11248 11249 Fixed a problem in the ToDecimal operator where the length of the 11250 resulting 11251 string could be set incorrectly too long if the input operand was a 11252 Buffer 11253 object. 11254 11255 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte 11256 (0) 11257 within a buffer would prematurely terminate a compare between buffer 11258 objects. 11259 11260 Added a check for string overflow (>200 characters as per the ACPI 11261 specification) during the Concatenate operator with two string operands. 11262 11263 Code and Data Size: Current and previous core subsystem library sizes are 11264 shown below. These are the code and data sizes for the acpica.lib 11265 produced 11266 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11267 any ACPI driver or OSPM code. The debug version of the code includes the 11268 debug output trace mechanism and has a much larger code and data size. 11269 Note 11270 that these values will vary depending on the efficiency of the compiler 11271 and 11272 the compiler options used during generation. 11273 11274 Previous Release: 11275 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 11276 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 11277 Current Release: 11278 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 11279 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 11280 11281 11282 11283 2) iASL Compiler/Disassembler: 11284 11285 Allow the use of the ObjectType operator on uninitialized Locals and Args 11286 (returns 0 as per the ACPI specification). 11287 11288 Fixed a problem where the compiler would fault if there was a syntax 11289 error 11290 in the FieldName of all of the various CreateXXXField operators. 11291 11292 Disallow the use of lower case letters within the EISAID macro, as per 11293 the 11294 ACPI specification. All EISAID strings must be of the form "UUUNNNN" 11295 Where 11296 U is an uppercase letter and N is a hex digit. 11297 11298 11299 ---------------------------------------- 11300 06 October 2004. Summary of changes for version 20041006: 11301 11302 1) ACPI CA Core Subsystem: 11303 11304 Implemented support for the ACPI 3.0 Timer operator. This ASL function 11305 implements a 64-bit timer with 100 nanosecond granularity. 11306 11307 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 11308 implement the ACPI 3.0 Timer operator. This allows the host OS to 11309 implement 11310 the timer with the best clock available. Also, it keeps the core 11311 subsystem 11312 out of the clock handling business, since the host OS (usually) performs 11313 this function. 11314 11315 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 11316 functions use a 64-bit address which is part of the packed ACPI Generic 11317 Address Structure. Since the structure is non-aligned, the alignment 11318 macros 11319 are now used to extract the address to a local variable before use. 11320 11321 Fixed a problem where the ToInteger operator assumed all input strings 11322 were 11323 hexadecimal. The operator now handles both decimal strings and hex 11324 strings 11325 (prefixed with "0x"). 11326 11327 Fixed a problem where the string length in the string object created as a 11328 result of the internal ConvertToString procedure could be incorrect. This 11329 potentially affected all implicit conversions and also the 11330 ToDecimalString 11331 and ToHexString operators. 11332 11333 Fixed two problems in the ToString operator. If the length parameter was 11334 zero, an incorrect string object was created and the value of the input 11335 length parameter was inadvertently changed from zero to Ones. 11336 11337 Fixed a problem where the optional ResourceSource string in the 11338 ExtendedIRQ 11339 resource macro was ignored. 11340 11341 Simplified the interfaces to the internal division functions, reducing 11342 code 11343 size and complexity. 11344 11345 Code and Data Size: Current and previous core subsystem library sizes are 11346 shown below. These are the code and data sizes for the acpica.lib 11347 produced 11348 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11349 any ACPI driver or OSPM code. The debug version of the code includes the 11350 debug output trace mechanism and has a much larger code and data size. 11351 Note 11352 that these values will vary depending on the efficiency of the compiler 11353 and 11354 the compiler options used during generation. 11355 11356 Previous Release: 11357 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 11358 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 11359 Current Release: 11360 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 11361 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 11362 11363 11364 2) iASL Compiler/Disassembler: 11365 11366 Implemented support for the ACPI 3.0 Timer operator. 11367 11368 Fixed a problem where the Default() operator was inadvertently ignored in 11369 a 11370 Switch/Case block. This was a problem in the translation of the Switch 11371 statement to If...Else pairs. 11372 11373 Added support to allow a standalone Return operator, with no parentheses 11374 (or 11375 operands). 11376 11377 Fixed a problem with code generation for the ElseIf operator where the 11378 translated Else...If parse tree was improperly constructed leading to the 11379 loss of some code. 11380 11381 ---------------------------------------- 11382 22 September 2004. Summary of changes for version 20040922: 11383 11384 1) ACPI CA Core Subsystem: 11385 11386 Fixed a problem with the implementation of the LNot() operator where 11387 "Ones" 11388 was not returned for the TRUE case. Changed the code to return Ones 11389 instead 11390 of (!Arg) which was usually 1. This change affects iASL constant folding 11391 for 11392 this operator also. 11393 11394 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was 11395 not 11396 initialized properly -- Now zero the entire buffer in this case where the 11397 buffer already exists. 11398 11399 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 11400 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 11401 related code considerably. This will require changes/updates to all OS 11402 interface layers (OSLs.) 11403 11404 Implemented a new external interface, AcpiInstallExceptionHandler, to 11405 allow 11406 a system exception handler to be installed. This handler is invoked upon 11407 any 11408 run-time exception that occurs during control method execution. 11409 11410 Added support for the DSDT in AcpiTbFindTable. This allows the 11411 DataTableRegion() operator to access the local copy of the DSDT. 11412 11413 Code and Data Size: Current and previous core subsystem library sizes are 11414 shown below. These are the code and data sizes for the acpica.lib 11415 produced 11416 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11417 any ACPI driver or OSPM code. The debug version of the code includes the 11418 debug output trace mechanism and has a much larger code and data size. 11419 Note 11420 that these values will vary depending on the efficiency of the compiler 11421 and 11422 the compiler options used during generation. 11423 11424 Previous Release: 11425 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 11426 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 11427 Current Release: 11428 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 11429 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 11430 11431 11432 2) iASL Compiler/Disassembler: 11433 11434 Fixed a problem with constant folding and the LNot operator. LNot was 11435 returning 1 in the TRUE case, not Ones as per the ACPI specification. 11436 This 11437 could result in the generation of an incorrect folded/reduced constant. 11438 11439 End-Of-File is now allowed within a "//"-style comment. A parse error no 11440 longer occurs if such a comment is at the very end of the input ASL 11441 source 11442 file. 11443 11444 Implemented the "-r" option to override the Revision in the table header. 11445 The initial use of this option will be to simplify the evaluation of the 11446 AML 11447 interpreter by allowing a single ASL source module to be compiled for 11448 either 11449 32-bit or 64-bit integers. 11450 11451 11452 ---------------------------------------- 11453 27 August 2004. Summary of changes for version 20040827: 11454 11455 1) ACPI CA Core Subsystem: 11456 11457 - Implemented support for implicit object conversion in the non-numeric 11458 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, 11459 and 11460 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 11461 the second operand is implicitly converted on the fly to match the type 11462 of 11463 the first operand. For example: 11464 11465 LEqual (Source1, Source2) 11466 11467 Source1 and Source2 must each evaluate to an integer, a string, or a 11468 buffer. 11469 The data type of Source1 dictates the required type of Source2. Source2 11470 is 11471 implicitly converted if necessary to match the type of Source1. 11472 11473 - Updated and corrected the behavior of the string conversion support. 11474 The 11475 rules concerning conversion of buffers to strings (according to the ACPI 11476 specification) are as follows: 11477 11478 ToDecimalString - explicit byte-wise conversion of buffer to string of 11479 decimal values (0-255) separated by commas. ToHexString - explicit byte- 11480 wise 11481 conversion of buffer to string of hex values (0-FF) separated by commas. 11482 ToString - explicit byte-wise conversion of buffer to string. Byte-by- 11483 byte 11484 copy with no transform except NULL terminated. Any other implicit buffer- 11485 to- 11486 string conversion - byte-wise conversion of buffer to string of hex 11487 values 11488 (0-FF) separated by spaces. 11489 11490 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 11491 11492 - Fixed a problem in AcpiNsGetPathnameLength where the returned length 11493 was 11494 one byte too short in the case of a node in the root scope. This could 11495 cause a fault during debug output. 11496 11497 - Code and Data Size: Current and previous core subsystem library sizes 11498 are 11499 shown below. These are the code and data sizes for the acpica.lib 11500 produced 11501 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11502 any ACPI driver or OSPM code. The debug version of the code includes the 11503 debug output trace mechanism and has a much larger code and data size. 11504 Note 11505 that these values will vary depending on the efficiency of the compiler 11506 and 11507 the compiler options used during generation. 11508 11509 Previous Release: 11510 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 11511 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 11512 Current Release: 11513 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 11514 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 11515 11516 11517 2) iASL Compiler/Disassembler: 11518 11519 - Fixed a Linux generation error. 11520 11521 11522 ---------------------------------------- 11523 16 August 2004. Summary of changes for version 20040816: 11524 11525 1) ACPI CA Core Subsystem: 11526 11527 Designed and implemented support within the AML interpreter for the so- 11528 called "implicit return". This support returns the result of the last 11529 ASL 11530 operation within a control method, in the absence of an explicit Return() 11531 operator. A few machines depend on this behavior, even though it is not 11532 explicitly supported by the ASL language. It is optional support that 11533 can 11534 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 11535 11536 Removed support for the PCI_Config address space from the internal low 11537 level 11538 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 11539 support was not used internally, and would not work correctly anyway 11540 because 11541 the PCI bus number and segment number were not supported. There are 11542 separate interfaces for PCI configuration space access because of the 11543 unique 11544 interface. 11545 11546 Code and Data Size: Current and previous core subsystem library sizes are 11547 shown below. These are the code and data sizes for the acpica.lib 11548 produced 11549 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11550 any ACPI driver or OSPM code. The debug version of the code includes the 11551 debug output trace mechanism and has a much larger code and data size. 11552 Note 11553 that these values will vary depending on the efficiency of the compiler 11554 and 11555 the compiler options used during generation. 11556 11557 Previous Release: 11558 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 11559 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 11560 Current Release: 11561 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 11562 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 11563 11564 11565 2) iASL Compiler/Disassembler: 11566 11567 Fixed a problem where constants in ASL expressions at the root level (not 11568 within a control method) could be inadvertently truncated during code 11569 generation. This problem was introduced in the 20040715 release. 11570 11571 11572 ---------------------------------------- 11573 15 July 2004. Summary of changes for version 20040715: 11574 11575 1) ACPI CA Core Subsystem: 11576 11577 Restructured the internal HW GPE interfaces to pass/track the current 11578 state 11579 of interrupts (enabled/disabled) in order to avoid possible deadlock and 11580 increase flexibility of the interfaces. 11581 11582 Implemented a "lexicographical compare" for String and Buffer objects 11583 within 11584 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual - 11585 - 11586 as per further clarification to the ACPI specification. Behavior is 11587 similar 11588 to C library "strcmp". 11589 11590 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 11591 external function. In the 32-bit non-debug case, the stack use has been 11592 reduced from 168 bytes to 32 bytes. 11593 11594 Deployed a new run-time configuration flag, 11595 AcpiGbl_EnableInterpreterSlack, 11596 whose purpose is to allow the AML interpreter to forgive certain bad AML 11597 constructs. Default setting is FALSE. 11598 11599 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field 11600 IO 11601 support code. If enabled, it allows field access to go beyond the end of 11602 a 11603 region definition if the field is within the region length rounded up to 11604 the 11605 next access width boundary (a common coding error.) 11606 11607 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 11608 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, 11609 these 11610 symbols are lowercased by the latest version of the AcpiSrc tool. 11611 11612 The prototypes for the PCI interfaces in acpiosxf.h have been updated to 11613 rename "Register" to simply "Reg" to prevent certain compilers from 11614 complaining. 11615 11616 Code and Data Size: Current and previous core subsystem library sizes are 11617 shown below. These are the code and data sizes for the acpica.lib 11618 produced 11619 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11620 any ACPI driver or OSPM code. The debug version of the code includes the 11621 debug output trace mechanism and has a much larger code and data size. 11622 Note 11623 that these values will vary depending on the efficiency of the compiler 11624 and 11625 the compiler options used during generation. 11626 11627 Previous Release: 11628 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 11629 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 11630 Current Release: 11631 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 11632 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 11633 11634 11635 2) iASL Compiler/Disassembler: 11636 11637 Implemented full support for Package objects within the Case() operator. 11638 Note: The Break() operator is currently not supported within Case blocks 11639 (TermLists) as there is some question about backward compatibility with 11640 ACPI 11641 1.0 interpreters. 11642 11643 11644 Fixed a problem where complex terms were not supported properly within 11645 the 11646 Switch() operator. 11647 11648 Eliminated extraneous warning for compiler-emitted reserved names of the 11649 form "_T_x". (Used in Switch/Case operators.) 11650 11651 Eliminated optimization messages for "_T_x" objects and small constants 11652 within the DefinitionBlock operator. 11653 11654 11655 ---------------------------------------- 11656 15 June 2004. Summary of changes for version 20040615: 11657 11658 1) ACPI CA Core Subsystem: 11659 11660 Implemented support for Buffer and String objects (as per ACPI 2.0) for 11661 the 11662 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 11663 LLessEqual. 11664 11665 All directory names in the entire source package are lower case, as they 11666 were in earlier releases. 11667 11668 Implemented "Disassemble" command in the AML debugger that will 11669 disassemble 11670 a single control method. 11671 11672 Code and Data Size: Current and previous core subsystem library sizes are 11673 shown below. These are the code and data sizes for the acpica.lib 11674 produced 11675 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11676 any ACPI driver or OSPM code. The debug version of the code includes the 11677 debug output trace mechanism and has a much larger code and data size. 11678 Note 11679 that these values will vary depending on the efficiency of the compiler 11680 and 11681 the compiler options used during generation. 11682 11683 Previous Release: 11684 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 11685 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 11686 11687 Current Release: 11688 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 11689 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 11690 11691 11692 2) iASL Compiler/Disassembler: 11693 11694 Implemented support for Buffer and String objects (as per ACPI 2.0) for 11695 the 11696 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 11697 LLessEqual. 11698 11699 All directory names in the entire source package are lower case, as they 11700 were in earlier releases. 11701 11702 Fixed a fault when using the -g or -d<nofilename> options if the FADT was 11703 not found. 11704 11705 Fixed an issue with the Windows version of the compiler where later 11706 versions 11707 of Windows place the FADT in the registry under the name "FADT" and not 11708 "FACP" as earlier versions did. This applies when using the -g or - 11709 d<nofilename> options. The compiler now looks for both strings as 11710 necessary. 11711 11712 Fixed a problem with compiler namepath optimization where a namepath 11713 within 11714 the Scope() operator could not be optimized if the namepath was a subpath 11715 of 11716 the current scope path. 11717 11718 ---------------------------------------- 11719 27 May 2004. Summary of changes for version 20040527: 11720 11721 1) ACPI CA Core Subsystem: 11722 11723 Completed a new design and implementation for EBDA (Extended BIOS Data 11724 Area) 11725 support in the RSDP scan code. The original code improperly scanned for 11726 the 11727 EBDA by simply scanning from memory location 0 to 0x400. The correct 11728 method 11729 is to first obtain the EBDA pointer from within the BIOS data area, then 11730 scan 1K of memory starting at the EBDA pointer. There appear to be few 11731 if 11732 any machines that place the RSDP in the EBDA, however. 11733 11734 Integrated a fix for a possible fault during evaluation of BufferField 11735 arguments. Obsolete code that was causing the problem was removed. 11736 11737 Found and fixed a problem in the Field Support Code where data could be 11738 corrupted on a bit field read that starts on an aligned boundary but does 11739 not end on an aligned boundary. Merged the read/write "datum length" 11740 calculation code into a common procedure. 11741 11742 Rolled in a couple of changes to the FreeBSD-specific header. 11743 11744 11745 Code and Data Size: Current and previous core subsystem library sizes are 11746 shown below. These are the code and data sizes for the acpica.lib 11747 produced 11748 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11749 any ACPI driver or OSPM code. The debug version of the code includes the 11750 debug output trace mechanism and has a much larger code and data size. 11751 Note 11752 that these values will vary depending on the efficiency of the compiler 11753 and 11754 the compiler options used during generation. 11755 11756 Previous Release: 11757 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11758 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 11759 Current Release: 11760 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 11761 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 11762 11763 11764 2) iASL Compiler/Disassembler: 11765 11766 Fixed a generation warning produced by some overly-verbose compilers for 11767 a 11768 64-bit constant. 11769 11770 ---------------------------------------- 11771 14 May 2004. Summary of changes for version 20040514: 11772 11773 1) ACPI CA Core Subsystem: 11774 11775 Fixed a problem where hardware GPE enable bits sometimes not set properly 11776 during and after GPE method execution. Result of 04/27 changes. 11777 11778 Removed extra "clear all GPEs" when sleeping/waking. 11779 11780 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 11781 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above 11782 to 11783 the new AcpiEv* calls as appropriate. 11784 11785 ACPI_OS_NAME was removed from the OS-specific headers. The default name 11786 is 11787 now "Microsoft Windows NT" for maximum compatibility. However this can 11788 be 11789 changed by modifying the acconfig.h file. 11790 11791 Allow a single invocation of AcpiInstallNotifyHandler for a handler that 11792 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 11793 11794 Run _INI methods on ThermalZone objects. This is against the ACPI 11795 specification, but there is apparently ASL code in the field that has 11796 these 11797 _INI methods, and apparently "other" AML interpreters execute them. 11798 11799 Performed a full 16/32/64 bit lint that resulted in some small changes. 11800 11801 Added a sleep simulation command to the AML debugger to test sleep code. 11802 11803 Code and Data Size: Current and previous core subsystem library sizes are 11804 shown below. These are the code and data sizes for the acpica.lib 11805 produced 11806 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11807 any ACPI driver or OSPM code. The debug version of the code includes the 11808 debug output trace mechanism and has a much larger code and data size. 11809 Note 11810 that these values will vary depending on the efficiency of the compiler 11811 and 11812 the compiler options used during generation. 11813 11814 Previous Release: 11815 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11816 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 11817 Current Release: 11818 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11819 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 11820 11821 ---------------------------------------- 11822 27 April 2004. Summary of changes for version 20040427: 11823 11824 1) ACPI CA Core Subsystem: 11825 11826 Completed a major overhaul of the GPE handling within ACPI CA. There are 11827 now three types of GPEs: wake-only, runtime-only, and combination 11828 wake/run. 11829 The only GPEs allowed to be combination wake/run are for button-style 11830 devices such as a control-method power button, control-method sleep 11831 button, 11832 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are 11833 not 11834 referenced by any _PRW methods are marked for "runtime" and hardware 11835 enabled. Any GPE that is referenced by a _PRW method is marked for 11836 "wake" 11837 (and disabled at runtime). However, at sleep time, only those GPEs that 11838 have been specifically enabled for wake via the AcpiEnableGpe interface 11839 will 11840 actually be hardware enabled. 11841 11842 A new external interface has been added, AcpiSetGpeType(), that is meant 11843 to 11844 be used by device drivers to force a GPE to a particular type. It will 11845 be 11846 especially useful for the drivers for the button devices mentioned above. 11847 11848 Completed restructuring of the ACPI CA initialization sequence so that 11849 default operation region handlers are installed before GPEs are 11850 initialized 11851 and the _PRW methods are executed. This will prevent errors when the 11852 _PRW 11853 methods attempt to access system memory or I/O space. 11854 11855 GPE enable/disable no longer reads the GPE enable register. We now keep 11856 the 11857 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 11858 thus no longer depend on the hardware to maintain these bits. 11859 11860 Always clear the wake status and fixed/GPE status bits before sleep, even 11861 for state S5. 11862 11863 Improved the AML debugger output for displaying the GPE blocks and their 11864 current status. 11865 11866 Added new strings for the _OSI method, of the form "Windows 2001 SPx" 11867 where 11868 x = 0,1,2,3,4. 11869 11870 Fixed a problem where the physical address was incorrectly calculated 11871 when 11872 the Load() operator was used to directly load from an Operation Region 11873 (vs. 11874 loading from a Field object.) Also added check for minimum table length 11875 for 11876 this case. 11877 11878 Fix for multiple mutex acquisition. Restore original thread SyncLevel on 11879 mutex release. 11880 11881 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 11882 consistency with the other fields returned. 11883 11884 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 11885 structure for each GPE in the system, so the size of this structure is 11886 important. 11887 11888 CPU stack requirement reduction: Cleaned up the method execution and 11889 object 11890 evaluation paths so that now a parameter structure is passed, instead of 11891 copying the various method parameters over and over again. 11892 11893 In evregion.c: Correctly exit and reenter the interpreter region if and 11894 only if dispatching an operation region request to a user-installed 11895 handler. 11896 Do not exit/reenter when dispatching to a default handler (e.g., default 11897 system memory or I/O handlers) 11898 11899 11900 Notes for updating drivers for the new GPE support. The following 11901 changes 11902 must be made to ACPI-related device drivers that are attached to one or 11903 more 11904 GPEs: (This information will be added to the ACPI CA Programmer 11905 Reference.) 11906 11907 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you 11908 must 11909 explicitly call AcpiEnableGpe. 11910 2) There is a new interface called AcpiSetGpeType. This should be called 11911 before enabling the GPE. Also, this interface will automatically disable 11912 the GPE if it is currently enabled. 11913 3) AcpiEnableGpe no longer supports a GPE type flag. 11914 11915 Specific drivers that must be changed: 11916 1) EC driver: 11917 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 11918 AeGpeHandler, NULL); 11919 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 11920 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 11921 11922 2) Button Drivers (Power, Lid, Sleep): 11923 Run _PRW method under parent device 11924 If _PRW exists: /* This is a control-method button */ 11925 Extract GPE number and possibly GpeDevice 11926 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 11927 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 11928 11929 For all other devices that have _PRWs, we automatically set the GPE type 11930 to 11931 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. 11932 This 11933 must be done on a selective basis, usually requiring some kind of user 11934 app 11935 to allow the user to pick the wake devices. 11936 11937 11938 Code and Data Size: Current and previous core subsystem library sizes are 11939 shown below. These are the code and data sizes for the acpica.lib 11940 produced 11941 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11942 any ACPI driver or OSPM code. The debug version of the code includes the 11943 debug output trace mechanism and has a much larger code and data size. 11944 Note 11945 that these values will vary depending on the efficiency of the compiler 11946 and 11947 the compiler options used during generation. 11948 11949 Previous Release: 11950 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 11951 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 11952 Current Release: 11953 11954 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11955 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 11956 11957 11958 11959 ---------------------------------------- 11960 02 April 2004. Summary of changes for version 20040402: 11961 11962 1) ACPI CA Core Subsystem: 11963 11964 Fixed an interpreter problem where an indirect store through an ArgX 11965 parameter was incorrectly applying the "implicit conversion rules" during 11966 the store. From the ACPI specification: "If the target is a method local 11967 or 11968 argument (LocalX or ArgX), no conversion is performed and the result is 11969 stored directly to the target". The new behavior is to disable implicit 11970 conversion during ALL stores to an ArgX. 11971 11972 Changed the behavior of the _PRW method scan to ignore any and all errors 11973 returned by a given _PRW. This prevents the scan from aborting from the 11974 failure of any single _PRW. 11975 11976 Moved the runtime configuration parameters from the global init procedure 11977 to 11978 static variables in acglobal.h. This will allow the host to override the 11979 default values easily. 11980 11981 Code and Data Size: Current and previous core subsystem library sizes are 11982 shown below. These are the code and data sizes for the acpica.lib 11983 produced 11984 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11985 any ACPI driver or OSPM code. The debug version of the code includes the 11986 debug output trace mechanism and has a much larger code and data size. 11987 Note 11988 that these values will vary depending on the efficiency of the compiler 11989 and 11990 the compiler options used during generation. 11991 11992 Previous Release: 11993 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 11994 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 11995 Current Release: 11996 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 11997 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 11998 11999 12000 2) iASL Compiler/Disassembler: 12001 12002 iASL now fully disassembles SSDTs. However, External() statements are 12003 not 12004 generated automatically for unresolved symbols at this time. This is a 12005 planned feature for future implementation. 12006 12007 Fixed a scoping problem in the disassembler that occurs when the type of 12008 the 12009 target of a Scope() operator is overridden. This problem caused an 12010 incorrectly nested internal namespace to be constructed. 12011 12012 Any warnings or errors that are emitted during disassembly are now 12013 commented 12014 out automatically so that the resulting file can be recompiled without 12015 any 12016 hand editing. 12017 12018 ---------------------------------------- 12019 26 March 2004. Summary of changes for version 20040326: 12020 12021 1) ACPI CA Core Subsystem: 12022 12023 Implemented support for "wake" GPEs via interaction between GPEs and the 12024 _PRW methods. Every GPE that is pointed to by one or more _PRWs is 12025 identified as a WAKE GPE and by default will no longer be enabled at 12026 runtime. Previously, we were blindly enabling all GPEs with a 12027 corresponding 12028 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. 12029 We 12030 believe this has been the cause of thousands of "spurious" GPEs on some 12031 systems. 12032 12033 This new GPE behavior is can be reverted to the original behavior (enable 12034 ALL GPEs at runtime) via a runtime flag. 12035 12036 Fixed a problem where aliased control methods could not access objects 12037 properly. The proper scope within the namespace was not initialized 12038 (transferred to the target of the aliased method) before executing the 12039 target method. 12040 12041 Fixed a potential race condition on internal object deletion on the 12042 return 12043 object in AcpiEvaluateObject. 12044 12045 Integrated a fix for resource descriptors where both _MEM and _MTP were 12046 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 12047 wide, 0x0F instead of 0x03.) 12048 12049 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, 12050 preventing 12051 a 12052 fault in some cases. 12053 12054 Updated Notify() values for debug statements in evmisc.c 12055 12056 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 12057 12058 Code and Data Size: Current and previous core subsystem library sizes are 12059 shown below. These are the code and data sizes for the acpica.lib 12060 produced 12061 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12062 any ACPI driver or OSPM code. The debug version of the code includes the 12063 debug output trace mechanism and has a much larger code and data size. 12064 Note 12065 that these values will vary depending on the efficiency of the compiler 12066 and 12067 the compiler options used during generation. 12068 12069 Previous Release: 12070 12071 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 12072 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 12073 Current Release: 12074 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 12075 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 12076 12077 ---------------------------------------- 12078 11 March 2004. Summary of changes for version 20040311: 12079 12080 1) ACPI CA Core Subsystem: 12081 12082 Fixed a problem where errors occurring during the parse phase of control 12083 method execution did not abort cleanly. For example, objects created and 12084 installed in the namespace were not deleted. This caused all subsequent 12085 invocations of the method to return the AE_ALREADY_EXISTS exception. 12086 12087 Implemented a mechanism to force a control method to "Serialized" 12088 execution 12089 if the method attempts to create namespace objects. (The root of the 12090 AE_ALREADY_EXISTS problem.) 12091 12092 Implemented support for the predefined _OSI "internal" control method. 12093 Initial supported strings are "Linux", "Windows 2000", "Windows 2001", 12094 and 12095 "Windows 2001.1", and can be easily upgraded for new strings as 12096 necessary. 12097 This feature will allow "other" operating systems to execute the fully 12098 tested, "Windows" code path through the ASL code 12099 12100 Global Lock Support: Now allows multiple acquires and releases with any 12101 internal thread. Removed concept of "owning thread" for this special 12102 mutex. 12103 12104 Fixed two functions that were inappropriately declaring large objects on 12105 the 12106 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage 12107 during 12108 method execution considerably. 12109 12110 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 12111 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 12112 12113 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 12114 defined on the machine. 12115 12116 Implemented two runtime options: One to force all control method 12117 execution 12118 to "Serialized" to mimic Windows behavior, another to disable _OSI 12119 support 12120 if it causes problems on a given machine. 12121 12122 Code and Data Size: Current and previous core subsystem library sizes are 12123 shown below. These are the code and data sizes for the acpica.lib 12124 produced 12125 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12126 any ACPI driver or OSPM code. The debug version of the code includes the 12127 debug output trace mechanism and has a much larger code and data size. 12128 Note 12129 that these values will vary depending on the efficiency of the compiler 12130 and 12131 the compiler options used during generation. 12132 12133 Previous Release: 12134 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 12135 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 12136 Current Release: 12137 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 12138 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 12139 12140 2) iASL Compiler/Disassembler: 12141 12142 Fixed an array size problem for FreeBSD that would cause the compiler to 12143 fault. 12144 12145 ---------------------------------------- 12146 20 February 2004. Summary of changes for version 20040220: 12147 12148 12149 1) ACPI CA Core Subsystem: 12150 12151 Implemented execution of _SxD methods for Device objects in the 12152 GetObjectInfo interface. 12153 12154 Fixed calls to _SST method to pass the correct arguments. 12155 12156 Added a call to _SST on wake to restore to "working" state. 12157 12158 Check for End-Of-Buffer failure case in the WalkResources interface. 12159 12160 Integrated fix for 64-bit alignment issue in acglobal.h by moving two 12161 structures to the beginning of the file. 12162 12163 After wake, clear GPE status register(s) before enabling GPEs. 12164 12165 After wake, clear/enable power button. (Perhaps we should clear/enable 12166 all 12167 fixed events upon wake.) 12168 12169 Fixed a couple of possible memory leaks in the Namespace manager. 12170 12171 Integrated latest acnetbsd.h file. 12172 12173 ---------------------------------------- 12174 11 February 2004. Summary of changes for version 20040211: 12175 12176 12177 1) ACPI CA Core Subsystem: 12178 12179 Completed investigation and implementation of the call-by-reference 12180 mechanism for control method arguments. 12181 12182 Fixed a problem where a store of an object into an indexed package could 12183 fail if the store occurs within a different method than the method that 12184 created the package. 12185 12186 Fixed a problem where the ToDecimal operator could return incorrect 12187 results. 12188 12189 Fixed a problem where the CopyObject operator could fail on some of the 12190 more 12191 obscure objects (e.g., Reference objects.) 12192 12193 Improved the output of the Debug object to display buffer, package, and 12194 index objects. 12195 12196 Fixed a problem where constructs of the form "RefOf (ArgX)" did not 12197 return 12198 the expected result. 12199 12200 Added permanent ACPI_REPORT_ERROR macros for all instances of the 12201 ACPI_AML_INTERNAL exception. 12202 12203 Integrated latest version of acfreebsd.h 12204 12205 ---------------------------------------- 12206 16 January 2004. Summary of changes for version 20040116: 12207 12208 The purpose of this release is primarily to update the copyright years in 12209 each module, thus causing a huge number of diffs. There are a few small 12210 functional changes, however. 12211 12212 1) ACPI CA Core Subsystem: 12213 12214 Improved error messages when there is a problem finding one or more of 12215 the 12216 required base ACPI tables 12217 12218 Reintroduced the definition of APIC_HEADER in actbl.h 12219 12220 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 12221 12222 Removed extraneous reference to NewObj in dsmthdat.c 12223 12224 2) iASL compiler 12225 12226 Fixed a problem introduced in December that disabled the correct 12227 disassembly 12228 of Resource Templates 12229 12230 12231 ---------------------------------------- 12232 03 December 2003. Summary of changes for version 20031203: 12233 12234 1) ACPI CA Core Subsystem: 12235 12236 Changed the initialization of Operation Regions during subsystem 12237 init to perform two entire walks of the ACPI namespace; The first 12238 to initialize the regions themselves, the second to execute the 12239 _REG methods. This fixed some interdependencies across _REG 12240 methods found on some machines. 12241 12242 Fixed a problem where a Store(Local0, Local1) could simply update 12243 the object reference count, and not create a new copy of the 12244 object if the Local1 is uninitialized. 12245 12246 Implemented support for the _SST reserved method during sleep 12247 transitions. 12248 12249 Implemented support to clear the SLP_TYP and SLP_EN bits when 12250 waking up, this is apparently required by some machines. 12251 12252 When sleeping, clear the wake status only if SleepState is not S5. 12253 12254 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 12255 pointer arithmetic advanced a string pointer too far. 12256 12257 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 12258 could be returned if the requested table has not been loaded. 12259 12260 Within the support for IRQ resources, restructured the handling of 12261 the active and edge/level bits. 12262 12263 Fixed a few problems in AcpiPsxExecute() where memory could be 12264 leaked under certain error conditions. 12265 12266 Improved error messages for the cases where the ACPI mode could 12267 not be entered. 12268 12269 Code and Data Size: Current and previous core subsystem library 12270 sizes are shown below. These are the code and data sizes for the 12271 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12272 these values do not include any ACPI driver or OSPM code. The 12273 debug version of the code includes the debug output trace 12274 mechanism and has a much larger code and data size. Note that 12275 these values will vary depending on the efficiency of the compiler 12276 and the compiler options used during generation. 12277 12278 Previous Release (20031029): 12279 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 12280 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 12281 Current Release: 12282 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 12283 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 12284 12285 2) iASL Compiler/Disassembler: 12286 12287 Implemented a fix for the iASL disassembler where a bad index was 12288 generated. This was most noticeable on 64-bit platforms 12289 12290 12291 ---------------------------------------- 12292 29 October 2003. Summary of changes for version 20031029: 12293 12294 1) ACPI CA Core Subsystem: 12295 12296 12297 Fixed a problem where a level-triggered GPE with an associated 12298 _Lxx control method was incorrectly cleared twice. 12299 12300 Fixed a problem with the Field support code where an access can 12301 occur beyond the end-of-region if the field is non-aligned but 12302 extends to the very end of the parent region (resulted in an 12303 AE_AML_REGION_LIMIT exception.) 12304 12305 Fixed a problem with ACPI Fixed Events where an RT Clock handler 12306 would not get invoked on an RTC event. The RTC event bitmasks for 12307 the PM1 registers were not being initialized properly. 12308 12309 Implemented support for executing _STA and _INI methods for 12310 Processor objects. Although this is currently not part of the 12311 ACPI specification, there is existing ASL code that depends on the 12312 init-time execution of these methods. 12313 12314 Implemented and deployed a GetDescriptorName function to decode 12315 the various types of internal descriptors. Guards against null 12316 descriptors during debug output also. 12317 12318 Implemented and deployed a GetNodeName function to extract the 4- 12319 character namespace node name. This function simplifies the debug 12320 and error output, as well as guarding against null pointers during 12321 output. 12322 12323 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 12324 simplify the debug and error output of 64-bit integers. This 12325 macro replaces the HIDWORD and LODWORD macros for dumping these 12326 integers. 12327 12328 Updated the implementation of the Stall() operator to only call 12329 AcpiOsStall(), and also return an error if the operand is larger 12330 than 255. This preserves the required behavior of not 12331 relinquishing the processor, as would happen if AcpiOsSleep() was 12332 called for "long stalls". 12333 12334 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 12335 initialized are now treated as NOOPs. 12336 12337 Cleaned up a handful of warnings during 64-bit generation. 12338 12339 Fixed a reported error where and incorrect GPE number was passed 12340 to the GPE dispatch handler. This value is only used for error 12341 output, however. Used this opportunity to clean up and streamline 12342 the GPE dispatch code. 12343 12344 Code and Data Size: Current and previous core subsystem library 12345 sizes are shown below. These are the code and data sizes for the 12346 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12347 these values do not include any ACPI driver or OSPM code. The 12348 12349 debug version of the code includes the debug output trace 12350 mechanism and has a much larger code and data size. Note that 12351 these values will vary depending on the efficiency of the compiler 12352 and the compiler options used during generation. 12353 12354 Previous Release (20031002): 12355 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 12356 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 12357 Current Release: 12358 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 12359 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 12360 12361 12362 2) iASL Compiler/Disassembler: 12363 12364 Updated the iASL compiler to return an error if the operand to the 12365 Stall() operator is larger than 255. 12366 12367 12368 ---------------------------------------- 12369 02 October 2003. Summary of changes for version 20031002: 12370 12371 12372 1) ACPI CA Core Subsystem: 12373 12374 Fixed a problem with Index Fields where the index was not 12375 incremented for fields that require multiple writes to the 12376 index/data registers (Fields that are wider than the data 12377 register.) 12378 12379 Fixed a problem with all Field objects where a write could go 12380 beyond the end-of-field if the field was larger than the access 12381 granularity and therefore required multiple writes to complete the 12382 request. An extra write beyond the end of the field could happen 12383 inadvertently. 12384 12385 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 12386 would incorrectly be returned if the width of the Data Register 12387 was larger than the specified field access width. 12388 12389 Completed fixes for LoadTable() and Unload() and verified their 12390 operation. Implemented full support for the "DdbHandle" object 12391 throughout the ACPI CA subsystem. 12392 12393 Implemented full support for the MADT and ECDT tables in the ACPI 12394 CA header files. Even though these tables are not directly 12395 consumed by ACPI CA, the header definitions are useful for ACPI 12396 device drivers. 12397 12398 Integrated resource descriptor fixes posted to the Linux ACPI 12399 list. This included checks for minimum descriptor length, and 12400 support for trailing NULL strings within descriptors that have 12401 optional string elements. 12402 12403 Code and Data Size: Current and previous core subsystem library 12404 sizes are shown below. These are the code and data sizes for the 12405 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12406 these values do not include any ACPI driver or OSPM code. The 12407 debug version of the code includes the debug output trace 12408 mechanism and has a much larger code and data size. Note that 12409 these values will vary depending on the efficiency of the compiler 12410 and the compiler options used during generation. 12411 12412 Previous Release (20030918): 12413 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 12414 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 12415 Current Release: 12416 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 12417 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 12418 12419 12420 2) iASL Compiler: 12421 12422 Implemented detection of non-ASCII characters within the input 12423 source ASL file. This catches attempts to compile binary (AML) 12424 files early in the compile, with an informative error message. 12425 12426 Fixed a problem where the disassembler would fault if the output 12427 filename could not be generated or if the output file could not be 12428 opened. 12429 12430 ---------------------------------------- 12431 18 September 2003. Summary of changes for version 20030918: 12432 12433 12434 1) ACPI CA Core Subsystem: 12435 12436 Found and fixed a longstanding problem with the late execution of 12437 the various deferred AML opcodes (such as Operation Regions, 12438 Buffer Fields, Buffers, and Packages). If the name string 12439 specified for the name of the new object placed the object in a 12440 scope other than the current scope, the initialization/execution 12441 of the opcode failed. The solution to this problem was to 12442 implement a mechanism where the late execution of such opcodes 12443 does not attempt to lookup/create the name a second time in an 12444 incorrect scope. This fixes the "region size computed 12445 incorrectly" problem. 12446 12447 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 12448 Global Lock AE_BAD_PARAMETER error. 12449 12450 Fixed several 64-bit issues with prototypes, casting and data 12451 types. 12452 12453 Removed duplicate prototype from acdisasm.h 12454 12455 Fixed an issue involving EC Operation Region Detach (Shaohua Li) 12456 12457 Code and Data Size: Current and previous core subsystem library 12458 sizes are shown below. These are the code and data sizes for the 12459 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12460 these values do not include any ACPI driver or OSPM code. The 12461 debug version of the code includes the debug output trace 12462 mechanism and has a much larger code and data size. Note that 12463 these values will vary depending on the efficiency of the compiler 12464 and the compiler options used during generation. 12465 12466 Previous Release: 12467 12468 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 12469 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 12470 Current Release: 12471 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 12472 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 12473 12474 12475 2) Linux: 12476 12477 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 12478 correct sleep time in seconds. 12479 12480 ---------------------------------------- 12481 14 July 2003. Summary of changes for version 20030619: 12482 12483 1) ACPI CA Core Subsystem: 12484 12485 Parse SSDTs in order discovered, as opposed to reverse order 12486 (Hrvoje Habjanic) 12487 12488 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 12489 Klausner, 12490 Nate Lawson) 12491 12492 12493 2) Linux: 12494 12495 Dynamically allocate SDT list (suggested by Andi Kleen) 12496 12497 proc function return value cleanups (Andi Kleen) 12498 12499 Correctly handle NMI watchdog during long stalls (Andrew Morton) 12500 12501 Make it so acpismp=force works (reported by Andrew Morton) 12502 12503 12504 ---------------------------------------- 12505 19 June 2003. Summary of changes for version 20030619: 12506 12507 1) ACPI CA Core Subsystem: 12508 12509 Fix To/FromBCD, eliminating the need for an arch-specific #define. 12510 12511 Do not acquire a semaphore in the S5 shutdown path. 12512 12513 Fix ex_digits_needed for 0. (Takayoshi Kochi) 12514 12515 Fix sleep/stall code reversal. (Andi Kleen) 12516 12517 Revert a change having to do with control method calling 12518 semantics. 12519 12520 2) Linux: 12521 12522 acpiphp update (Takayoshi Kochi) 12523 12524 Export acpi_disabled for sonypi (Stelian Pop) 12525 12526 Mention acpismp=force in config help 12527 12528 Re-add acpitable.c and acpismp=force. This improves backwards 12529 12530 compatibility and also cleans up the code to a significant degree. 12531 12532 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 12533 12534 ---------------------------------------- 12535 22 May 2003. Summary of changes for version 20030522: 12536 12537 1) ACPI CA Core Subsystem: 12538 12539 Found and fixed a reported problem where an AE_NOT_FOUND error 12540 occurred occasionally during _BST evaluation. This turned out to 12541 be an Owner ID allocation issue where a called method did not get 12542 a new ID assigned to it. Eventually, (after 64k calls), the Owner 12543 ID UINT16 would wraparound so that the ID would be the same as the 12544 caller's and the called method would delete the caller's 12545 namespace. 12546 12547 Implemented extended error reporting for control methods that are 12548 aborted due to a run-time exception. Output includes the exact 12549 AML instruction that caused the method abort, a dump of the method 12550 locals and arguments at the time of the abort, and a trace of all 12551 nested control method calls. 12552 12553 Modified the interpreter to allow the creation of buffers of zero 12554 length from the AML code. Implemented new code to ensure that no 12555 attempt is made to actually allocate a memory buffer (of length 12556 zero) - instead, a simple buffer object with a NULL buffer pointer 12557 and length zero is created. A warning is no longer issued when 12558 the AML attempts to create a zero-length buffer. 12559 12560 Implemented a workaround for the "leading asterisk issue" in 12561 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 12562 asterisk is automatically removed if present in any HID, UID, or 12563 CID strings. The iASL compiler will still flag this asterisk as 12564 an error, however. 12565 12566 Implemented full support for _CID methods that return a package of 12567 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 12568 now additionally returns a device _CID list if present. This 12569 required a change to the external interface in order to pass an 12570 ACPI_BUFFER object as a parameter since the _CID list is of 12571 variable length. 12572 12573 Fixed a problem with the new AE_SAME_HANDLER exception where 12574 handler initialization code did not know about this exception. 12575 12576 Code and Data Size: Current and previous core subsystem library 12577 sizes are shown below. These are the code and data sizes for the 12578 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12579 these values do not include any ACPI driver or OSPM code. The 12580 debug version of the code includes the debug output trace 12581 mechanism and has a much larger code and data size. Note that 12582 these values will vary depending on the efficiency of the compiler 12583 and the compiler options used during generation. 12584 12585 Previous Release (20030509): 12586 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 12587 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 12588 Current Release: 12589 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 12590 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 12591 12592 12593 2) Linux: 12594 12595 Fixed a bug in which we would reinitialize the ACPI interrupt 12596 after it was already working, thus disabling all ACPI and the IRQs 12597 for any other device sharing the interrupt. (Thanks to Stian 12598 Jordet) 12599 12600 Toshiba driver update (John Belmonte) 12601 12602 Return only 0 or 1 for our interrupt handler status (Andrew 12603 Morton) 12604 12605 12606 3) iASL Compiler: 12607 12608 Fixed a reported problem where multiple (nested) ElseIf() 12609 statements were not handled correctly by the compiler, resulting 12610 in incorrect warnings and incorrect AML code. This was a problem 12611 in both the ASL parser and the code generator. 12612 12613 12614 4) Documentation: 12615 12616 Added changes to existing interfaces, new exception codes, and new 12617 text concerning reference count object management versus garbage 12618 collection. 12619 12620 ---------------------------------------- 12621 09 May 2003. Summary of changes for version 20030509. 12622 12623 12624 1) ACPI CA Core Subsystem: 12625 12626 Changed the subsystem initialization sequence to hold off 12627 installation of address space handlers until the hardware has been 12628 initialized and the system has entered ACPI mode. This is because 12629 the installation of space handlers can cause _REG methods to be 12630 run. Previously, the _REG methods could potentially be run before 12631 ACPI mode was enabled. 12632 12633 Fixed some memory leak issues related to address space handler and 12634 notify handler installation. There were some problems with the 12635 reference count mechanism caused by the fact that the handler 12636 objects are shared across several namespace objects. 12637 12638 Fixed a reported problem where reference counts within the 12639 namespace were not properly updated when named objects created by 12640 method execution were deleted. 12641 12642 Fixed a reported problem where multiple SSDTs caused a deletion 12643 issue during subsystem termination. Restructured the table data 12644 structures to simplify the linked lists and the related code. 12645 12646 Fixed a problem where the table ID associated with secondary 12647 tables (SSDTs) was not being propagated into the namespace objects 12648 created by those tables. This would only present a problem for 12649 tables that are unloaded at run-time, however. 12650 12651 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 12652 type as the length parameter (instead of UINT32). 12653 12654 Solved a long-standing problem where an ALREADY_EXISTS error 12655 appears on various systems. This problem could happen when there 12656 are multiple PCI_Config operation regions under a single PCI root 12657 bus. This doesn't happen very frequently, but there are some 12658 systems that do this in the ASL. 12659 12660 Fixed a reported problem where the internal DeleteNode function 12661 was incorrectly handling the case where a namespace node was the 12662 first in the parent's child list, and had additional peers (not 12663 the only child, but first in the list of children.) 12664 12665 Code and Data Size: Current core subsystem library sizes are shown 12666 below. These are the code and data sizes for the acpica.lib 12667 produced by the Microsoft Visual C++ 6.0 compiler, and these 12668 values do not include any ACPI driver or OSPM code. The debug 12669 version of the code includes the debug output trace mechanism and 12670 has a much larger code and data size. Note that these values will 12671 vary depending on the efficiency of the compiler and the compiler 12672 options used during generation. 12673 12674 Previous Release 12675 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 12676 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 12677 Current Release: 12678 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 12679 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 12680 12681 12682 2) Linux: 12683 12684 Allow ":" in OS override string (Ducrot Bruno) 12685 12686 Kobject fix (Greg KH) 12687 12688 12689 3 iASL Compiler/Disassembler: 12690 12691 Fixed a problem in the generation of the C source code files (AML 12692 is emitted in C source statements for BIOS inclusion) where the 12693 Ascii dump that appears within a C comment at the end of each line 12694 could cause a compile time error if the AML sequence happens to 12695 have an open comment or close comment sequence embedded. 12696 12697 12698 ---------------------------------------- 12699 24 April 2003. Summary of changes for version 20030424. 12700 12701 12702 1) ACPI CA Core Subsystem: 12703 12704 Support for big-endian systems has been implemented. Most of the 12705 support has been invisibly added behind big-endian versions of the 12706 ACPI_MOVE_* macros. 12707 12708 Fixed a problem in AcpiHwDisableGpeBlock() and 12709 AcpiHwClearGpeBlock() where an incorrect offset was passed to the 12710 low level hardware write routine. The offset parameter was 12711 actually eliminated from the low level read/write routines because 12712 they had become obsolete. 12713 12714 Fixed a problem where a handler object was deleted twice during 12715 the removal of a fixed event handler. 12716 12717 12718 2) Linux: 12719 12720 A fix for SMP systems with link devices was contributed by 12721 12722 Compaq's Dan Zink. 12723 12724 (2.5) Return whether we handled the interrupt in our IRQ handler. 12725 (Linux ISRs no longer return void, so we can propagate the handler 12726 return value from the ACPI CA core back to the OS.) 12727 12728 12729 12730 3) Documentation: 12731 12732 The ACPI CA Programmer Reference has been updated to reflect new 12733 interfaces and changes to existing interfaces. 12734 12735 ---------------------------------------- 12736 28 March 2003. Summary of changes for version 20030328. 12737 12738 1) ACPI CA Core Subsystem: 12739 12740 The GPE Block Device support has been completed. New interfaces 12741 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 12742 interfaces (enable, disable, clear, getstatus) have been split 12743 into separate interfaces for Fixed Events and General Purpose 12744 Events (GPEs) in order to support GPE Block Devices properly. 12745 12746 Fixed a problem where the error message "Failed to acquire 12747 semaphore" would appear during operations on the embedded 12748 controller (EC). 12749 12750 Code and Data Size: Current core subsystem library sizes are shown 12751 below. These are the code and data sizes for the acpica.lib 12752 produced by the Microsoft Visual C++ 6.0 compiler, and these 12753 values do not include any ACPI driver or OSPM code. The debug 12754 version of the code includes the debug output trace mechanism and 12755 has a much larger code and data size. Note that these values will 12756 vary depending on the efficiency of the compiler and the compiler 12757 options used during generation. 12758 12759 Previous Release 12760 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 12761 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 12762 Current Release: 12763 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 12764 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 12765 12766 12767 ---------------------------------------- 12768 28 February 2003. Summary of changes for version 20030228. 12769 12770 12771 1) ACPI CA Core Subsystem: 12772 12773 The GPE handling and dispatch code has been completely overhauled 12774 in preparation for support of GPE Block Devices (ID ACPI0006). 12775 This affects internal data structures and code only; there should 12776 be no differences visible externally. One new file has been 12777 added, evgpeblk.c 12778 12779 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 12780 fields that are used to determine the GPE block lengths. The 12781 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 12782 structures are ignored. This is per the ACPI specification but it 12783 isn't very clear. The full 256 Block 0/1 GPEs are now supported 12784 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 12785 12786 In the SCI interrupt handler, removed the read of the PM1_CONTROL 12787 register to look at the SCI_EN bit. On some machines, this read 12788 causes an SMI event and greatly slows down SCI events. (This may 12789 in fact be the cause of slow battery status response on some 12790 systems.) 12791 12792 Fixed a problem where a store of a NULL string to a package object 12793 could cause the premature deletion of the object. This was seen 12794 during execution of the battery _BIF method on some systems, 12795 resulting in no battery data being returned. 12796 12797 Added AcpiWalkResources interface to simplify parsing of resource 12798 lists. 12799 12800 Code and Data Size: Current core subsystem library sizes are shown 12801 below. These are the code and data sizes for the acpica.lib 12802 produced by the Microsoft Visual C++ 6.0 compiler, and these 12803 values do not include any ACPI driver or OSPM code. The debug 12804 version of the code includes the debug output trace mechanism and 12805 has a much larger code and data size. Note that these values will 12806 vary depending on the efficiency of the compiler and the compiler 12807 options used during generation. 12808 12809 Previous Release 12810 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12811 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12812 Current Release: 12813 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 12814 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 12815 12816 12817 2) Linux 12818 12819 S3 fixes (Ole Rohne) 12820 12821 Update ACPI PHP driver with to use new acpi_walk_resource API 12822 (Bjorn Helgaas) 12823 12824 Add S4BIOS support (Pavel Machek) 12825 12826 Map in entire table before performing checksum (John Stultz) 12827 12828 Expand the mem= cmdline to allow the specification of reserved and 12829 ACPI DATA blocks (Pavel Machek) 12830 12831 Never use ACPI on VISWS 12832 12833 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 12834 12835 Revert a change that allowed P_BLK lengths to be 4 or 5. This is 12836 causing us to think that some systems support C2 when they really 12837 don't. 12838 12839 Do not count processor objects for non-present CPUs (Thanks to 12840 Dominik Brodowski) 12841 12842 12843 3) iASL Compiler: 12844 12845 Fixed a problem where ASL include files could not be found and 12846 opened. 12847 12848 Added support for the _PDC reserved name. 12849 12850 12851 ---------------------------------------- 12852 22 January 2003. Summary of changes for version 20030122. 12853 12854 12855 1) ACPI CA Core Subsystem: 12856 12857 Added a check for constructs of the form: Store (Local0, Local0) 12858 where Local0 is not initialized. Apparently, some BIOS 12859 programmers believe that this is a NOOP. Since this store doesn't 12860 do anything anyway, the new prototype behavior will ignore this 12861 error. This is a case where we can relax the strict checking in 12862 the interpreter in the name of compatibility. 12863 12864 12865 2) Linux 12866 12867 The AcpiSrc Source Conversion Utility has been released with the 12868 Linux package for the first time. This is the utility that is 12869 used to convert the ACPI CA base source code to the Linux version. 12870 12871 (Both) Handle P_BLK lengths shorter than 6 more gracefully 12872 12873 (Both) Move more headers to include/acpi, and delete an unused 12874 header. 12875 12876 (Both) Move drivers/acpi/include directory to include/acpi 12877 12878 (Both) Boot functions don't use cmdline, so don't pass it around 12879 12880 (Both) Remove include of unused header (Adrian Bunk) 12881 12882 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 12883 the 12884 former now also includes the latter, acpiphp.h only needs the one, 12885 now. 12886 12887 (2.5) Make it possible to select method of bios restoring after S3 12888 resume. [=> no more ugly ifdefs] (Pavel Machek) 12889 12890 (2.5) Make proc write interfaces work (Pavel Machek) 12891 12892 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 12893 12894 (2.5) Break out ACPI Perf code into its own module, under cpufreq 12895 (Dominik Brodowski) 12896 12897 (2.4) S4BIOS support (Ducrot Bruno) 12898 12899 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 12900 Visinoni) 12901 12902 12903 3) iASL Compiler: 12904 12905 Added support to disassemble SSDT and PSDTs. 12906 12907 Implemented support to obtain SSDTs from the Windows registry if 12908 available. 12909 12910 12911 ---------------------------------------- 12912 09 January 2003. Summary of changes for version 20030109. 12913 12914 1) ACPI CA Core Subsystem: 12915 12916 Changed the behavior of the internal Buffer-to-String conversion 12917 function. The current ACPI specification states that the contents 12918 of the buffer are "converted to a string of two-character 12919 hexadecimal numbers, each separated by a space". Unfortunately, 12920 this definition is not backwards compatible with existing ACPI 1.0 12921 implementations (although the behavior was not defined in the ACPI 12922 1.0 specification). The new behavior simply copies data from the 12923 buffer to the string until a null character is found or the end of 12924 the buffer is reached. The new String object is always null 12925 terminated. This problem was seen during the generation of _BIF 12926 battery data where incorrect strings were returned for battery 12927 type, etc. This will also require an errata to the ACPI 12928 specification. 12929 12930 Renamed all instances of NATIVE_UINT and NATIVE_INT to 12931 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 12932 12933 Copyright in all module headers (both Linux and non-Linux) has be 12934 updated to 2003. 12935 12936 Code and Data Size: Current core subsystem library sizes are shown 12937 below. These are the code and data sizes for the acpica.lib 12938 produced by the Microsoft Visual C++ 6.0 compiler, and these 12939 values do not include any ACPI driver or OSPM code. The debug 12940 version of the code includes the debug output trace mechanism and 12941 has a much larger code and data size. Note that these values will 12942 vary depending on the efficiency of the compiler and the compiler 12943 options used during generation. 12944 12945 Previous Release 12946 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12947 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12948 Current Release: 12949 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12950 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12951 12952 12953 2) Linux 12954 12955 Fixed an oops on module insertion/removal (Matthew Tippett) 12956 12957 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 12958 12959 (2.5) Replace pr_debug (Randy Dunlap) 12960 12961 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 12962 12963 (Both) Eliminate spawning of thread from timer callback, in favor 12964 of schedule_work() 12965 12966 (Both) Show Lid status in /proc (Zdenek OGAR Skalak) 12967 12968 (Both) Added define for Fixed Function HW region (Matthew Wilcox) 12969 12970 (Both) Add missing statics to button.c (Pavel Machek) 12971 12972 Several changes have been made to the source code translation 12973 utility that generates the Linux Code in order to make the code 12974 more "Linux-like": 12975 12976 All typedefs on structs and unions have been removed in keeping 12977 with the Linux coding style. 12978 12979 Removed the non-Linux SourceSafe module revision number from each 12980 module header. 12981 12982 Completed major overhaul of symbols to be lowercased for linux. 12983 Doubled the number of symbols that are lowercased. 12984 12985 Fixed a problem where identifiers within procedure headers and 12986 within quotes were not fully lower cased (they were left with a 12987 starting capital.) 12988 12989 Some C macros whose only purpose is to allow the generation of 16- 12990 bit code are now completely removed in the Linux code, increasing 12991 readability and maintainability. 12992 12993 ---------------------------------------- 12994 12995 12 December 2002. Summary of changes for version 20021212. 12996 12997 12998 1) ACPI CA Core Subsystem: 12999 13000 Fixed a problem where the creation of a zero-length AML Buffer 13001 would cause a fault. 13002 13003 Fixed a problem where a Buffer object that pointed to a static AML 13004 buffer (in an ACPI table) could inadvertently be deleted, causing 13005 memory corruption. 13006 13007 Fixed a problem where a user buffer (passed in to the external 13008 ACPI CA interfaces) could be overwritten if the buffer was too 13009 small to complete the operation, causing memory corruption. 13010 13011 Fixed a problem in the Buffer-to-String conversion code where a 13012 string of length one was always returned, regardless of the size 13013 of the input Buffer object. 13014 13015 Removed the NATIVE_CHAR data type across the entire source due to 13016 lack of need and lack of consistent use. 13017 13018 Code and Data Size: Current core subsystem library sizes are shown 13019 below. These are the code and data sizes for the acpica.lib 13020 produced by the Microsoft Visual C++ 6.0 compiler, and these 13021 values do not include any ACPI driver or OSPM code. The debug 13022 version of the code includes the debug output trace mechanism and 13023 has a much larger code and data size. Note that these values will 13024 vary depending on the efficiency of the compiler and the compiler 13025 options used during generation. 13026 13027 Previous Release 13028 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 13029 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 13030 Current Release: 13031 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 13032 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 13033 13034 13035 ---------------------------------------- 13036 05 December 2002. Summary of changes for version 20021205. 13037 13038 1) ACPI CA Core Subsystem: 13039 13040 Fixed a problem where a store to a String or Buffer object could 13041 cause corruption of the DSDT if the object type being stored was 13042 the same as the target object type and the length of the object 13043 being stored was equal to or smaller than the original (existing) 13044 target object. This was seen to cause corruption of battery _BIF 13045 buffers if the _BIF method modified the buffer on the fly. 13046 13047 Fixed a problem where an internal error was generated if a control 13048 method invocation was used in an OperationRegion, Buffer, or 13049 Package declaration. This was caused by the deferred parsing of 13050 the control method and thus the deferred creation of the internal 13051 method object. The solution to this problem was to create the 13052 internal method object at the moment the method is encountered in 13053 the first pass - so that subsequent references to the method will 13054 able to obtain the required parameter count and thus properly 13055 parse the method invocation. This problem presented itself as an 13056 AE_AML_INTERNAL during the pass 1 parse phase during table load. 13057 13058 Fixed a problem where the internal String object copy routine did 13059 not always allocate sufficient memory for the target String object 13060 and caused memory corruption. This problem was seen to cause 13061 "Allocation already present in list!" errors as memory allocation 13062 became corrupted. 13063 13064 Implemented a new function for the evaluation of namespace objects 13065 that allows the specification of the allowable return object 13066 types. This simplifies a lot of code that checks for a return 13067 object of one or more specific objects returned from the 13068 evaluation (such as _STA, etc.) This may become and external 13069 function if it would be useful to ACPI-related drivers. 13070 13071 Completed another round of prefixing #defines with "ACPI_" for 13072 clarity. 13073 13074 Completed additional code restructuring to allow more modular 13075 linking for iASL compiler and AcpiExec. Several files were split 13076 creating new files. New files: nsparse.c dsinit.c evgpe.c 13077 13078 Implemented an abort mechanism to terminate an executing control 13079 method via the AML debugger. This feature is useful for debugging 13080 control methods that depend (wait) for specific hardware 13081 responses. 13082 13083 Code and Data Size: Current core subsystem library sizes are shown 13084 below. These are the code and data sizes for the acpica.lib 13085 produced by the Microsoft Visual C++ 6.0 compiler, and these 13086 values do not include any ACPI driver or OSPM code. The debug 13087 version of the code includes the debug output trace mechanism and 13088 has a much larger code and data size. Note that these values will 13089 vary depending on the efficiency of the compiler and the compiler 13090 options used during generation. 13091 13092 Previous Release 13093 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 13094 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 13095 Current Release: 13096 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 13097 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 13098 13099 13100 2) iASL Compiler/Disassembler 13101 13102 Fixed a compiler code generation problem for "Interrupt" Resource 13103 Descriptors. If specified in the ASL, the optional "Resource 13104 Source Index" and "Resource Source" fields were not inserted into 13105 the correct location within the AML resource descriptor, creating 13106 an invalid descriptor. 13107 13108 Fixed a disassembler problem for "Interrupt" resource descriptors. 13109 The optional "Resource Source Index" and "Resource Source" fields 13110 were ignored. 13111 13112 13113 ---------------------------------------- 13114 22 November 2002. Summary of changes for version 20021122. 13115 13116 13117 1) ACPI CA Core Subsystem: 13118 13119 Fixed a reported problem where an object stored to a Method Local 13120 or Arg was not copied to a new object during the store - the 13121 object pointer was simply copied to the Local/Arg. This caused 13122 all subsequent operations on the Local/Arg to also affect the 13123 original source of the store operation. 13124 13125 Fixed a problem where a store operation to a Method Local or Arg 13126 was not completed properly if the Local/Arg contained a reference 13127 (from RefOf) to a named field. The general-purpose store-to- 13128 namespace-node code is now used so that this case is handled 13129 automatically. 13130 13131 Fixed a problem where the internal object copy routine would cause 13132 a protection fault if the object being copied was a Package and 13133 contained either 1) a NULL package element or 2) a nested sub- 13134 package. 13135 13136 Fixed a problem with the GPE initialization that resulted from an 13137 ambiguity in the ACPI specification. One section of the 13138 specification states that both the address and length of the GPE 13139 block must be zero if the block is not supported. Another section 13140 implies that only the address need be zero if the block is not 13141 supported. The code has been changed so that both the address and 13142 the length must be non-zero to indicate a valid GPE block (i.e., 13143 if either the address or the length is zero, the GPE block is 13144 invalid.) 13145 13146 Code and Data Size: Current core subsystem library sizes are shown 13147 below. These are the code and data sizes for the acpica.lib 13148 produced by the Microsoft Visual C++ 6.0 compiler, and these 13149 values do not include any ACPI driver or OSPM code. The debug 13150 version of the code includes the debug output trace mechanism and 13151 has a much larger code and data size. Note that these values will 13152 vary depending on the efficiency of the compiler and the compiler 13153 options used during generation. 13154 13155 Previous Release 13156 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 13157 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 13158 Current Release: 13159 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 13160 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 13161 13162 13163 2) Linux 13164 13165 Cleaned up EC driver. Exported an external EC read/write 13166 interface. By going through this, other drivers (most notably 13167 sonypi) will be able to serialize access to the EC. 13168 13169 13170 3) iASL Compiler/Disassembler 13171 13172 Implemented support to optionally generate include files for both 13173 ASM and C (the -i switch). This simplifies BIOS development by 13174 automatically creating include files that contain external 13175 declarations for the symbols that are created within the 13176 13177 (optionally generated) ASM and C AML source files. 13178 13179 13180 ---------------------------------------- 13181 15 November 2002. Summary of changes for version 20021115. 13182 13183 1) ACPI CA Core Subsystem: 13184 13185 Fixed a memory leak problem where an error during resolution of 13186 13187 method arguments during a method invocation from another method 13188 failed to cleanup properly by deleting all successfully resolved 13189 argument objects. 13190 13191 Fixed a problem where the target of the Index() operator was not 13192 correctly constructed if the source object was a package. This 13193 problem has not been detected because the use of a target operand 13194 with Index() is very rare. 13195 13196 Fixed a problem with the Index() operator where an attempt was 13197 made to delete the operand objects twice. 13198 13199 Fixed a problem where an attempt was made to delete an operand 13200 twice during execution of the CondRefOf() operator if the target 13201 did not exist. 13202 13203 Implemented the first of perhaps several internal create object 13204 functions that create and initialize a specific object type. This 13205 consolidates duplicated code wherever the object is created, thus 13206 shrinking the size of the subsystem. 13207 13208 Implemented improved debug/error messages for errors that occur 13209 during nested method invocations. All executing method pathnames 13210 are displayed (with the error) as the call stack is unwound - thus 13211 simplifying debug. 13212 13213 Fixed a problem introduced in the 10/02 release that caused 13214 premature deletion of a buffer object if a buffer was used as an 13215 ASL operand where an integer operand is required (Thus causing an 13216 implicit object conversion from Buffer to Integer.) The change in 13217 the 10/02 release was attempting to fix a memory leak (albeit 13218 incorrectly.) 13219 13220 Code and Data Size: Current core subsystem library sizes are shown 13221 below. These are the code and data sizes for the acpica.lib 13222 produced by the Microsoft Visual C++ 6.0 compiler, and these 13223 values do not include any ACPI driver or OSPM code. The debug 13224 version of the code includes the debug output trace mechanism and 13225 has a much larger code and data size. Note that these values will 13226 vary depending on the efficiency of the compiler and the compiler 13227 options used during generation. 13228 13229 Previous Release 13230 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 13231 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 13232 Current Release: 13233 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 13234 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 13235 13236 13237 2) Linux 13238 13239 Changed the implementation of the ACPI semaphores to use down() 13240 instead of down_interruptable(). It is important that the 13241 execution of ACPI control methods not be interrupted by signals. 13242 Methods must run to completion, or the system may be left in an 13243 unknown/unstable state. 13244 13245 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 13246 (Shawn Starr) 13247 13248 13249 3) iASL Compiler/Disassembler 13250 13251 13252 Changed the default location of output files. All output files 13253 are now placed in the current directory by default instead of in 13254 the directory of the source file. This change may affect some 13255 existing makefiles, but it brings the behavior of the compiler in 13256 line with other similar tools. The location of the output files 13257 can be overridden with the -p command line switch. 13258 13259 13260 ---------------------------------------- 13261 11 November 2002. Summary of changes for version 20021111. 13262 13263 13264 0) ACPI Specification 2.0B is released and is now available at: 13265 http://www.acpi.info/index.html 13266 13267 13268 1) ACPI CA Core Subsystem: 13269 13270 Implemented support for the ACPI 2.0 SMBus Operation Regions. 13271 This includes the early detection and handoff of the request to 13272 the SMBus region handler (avoiding all of the complex field 13273 support code), and support for the bidirectional return packet 13274 from an SMBus write operation. This paves the way for the 13275 development of SMBus drivers in each host operating system. 13276 13277 Fixed a problem where the semaphore WAIT_FOREVER constant was 13278 defined as 32 bits, but must be 16 bits according to the ACPI 13279 specification. This had the side effect of causing ASL 13280 Mutex/Event timeouts even though the ASL code requested a wait 13281 forever. Changed all internal references to the ACPI timeout 13282 parameter to 16 bits to prevent future problems. Changed the name 13283 of WAIT_FOREVER to ACPI_WAIT_FOREVER. 13284 13285 Code and Data Size: Current core subsystem library sizes are shown 13286 below. These are the code and data sizes for the acpica.lib 13287 produced by the Microsoft Visual C++ 6.0 compiler, and these 13288 values do not include any ACPI driver or OSPM code. The debug 13289 version of the code includes the debug output trace mechanism and 13290 has a much larger code and data size. Note that these values will 13291 vary depending on the efficiency of the compiler and the compiler 13292 options used during generation. 13293 13294 Previous Release 13295 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 13296 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 13297 Current Release: 13298 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 13299 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 13300 13301 13302 2) Linux 13303 13304 Module loading/unloading fixes (John Cagle) 13305 13306 13307 3) iASL Compiler/Disassembler 13308 13309 Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 13310 13311 Implemented support for the disassembly of all SMBus protocol 13312 keywords (SMBQuick, SMBWord, etc.) 13313 13314 ---------------------------------------- 13315 01 November 2002. Summary of changes for version 20021101. 13316 13317 13318 1) ACPI CA Core Subsystem: 13319 13320 Fixed a problem where platforms that have a GPE1 block but no GPE0 13321 block were not handled correctly. This resulted in a "GPE 13322 overlap" error message. GPE0 is no longer required. 13323 13324 Removed code added in the previous release that inserted nodes 13325 into the namespace in alphabetical order. This caused some side- 13326 effects on various machines. The root cause of the problem is 13327 still under investigation since in theory, the internal ordering 13328 of the namespace nodes should not matter. 13329 13330 13331 Enhanced error reporting for the case where a named object is not 13332 found during control method execution. The full ACPI namepath 13333 (name reference) of the object that was not found is displayed in 13334 this case. 13335 13336 Note: as a result of the overhaul of the namespace object types in 13337 the previous release, the namespace nodes for the predefined 13338 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 13339 instead of ACPI_TYPE_ANY. This simplifies the namespace 13340 management code but may affect code that walks the namespace tree 13341 looking for specific object types. 13342 13343 Code and Data Size: Current core subsystem library sizes are shown 13344 below. These are the code and data sizes for the acpica.lib 13345 produced by the Microsoft Visual C++ 6.0 compiler, and these 13346 values do not include any ACPI driver or OSPM code. The debug 13347 version of the code includes the debug output trace mechanism and 13348 has a much larger code and data size. Note that these values will 13349 vary depending on the efficiency of the compiler and the compiler 13350 options used during generation. 13351 13352 Previous Release 13353 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 13354 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 13355 Current Release: 13356 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 13357 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 13358 13359 13360 2) Linux 13361 13362 Fixed a problem introduced in the previous release where the 13363 Processor and Thermal objects were not recognized and installed in 13364 /proc. This was related to the scope type change described above. 13365 13366 13367 3) iASL Compiler/Disassembler 13368 13369 Implemented the -g option to get all of the required ACPI tables 13370 from the registry and save them to files (Windows version of the 13371 compiler only.) The required tables are the FADT, FACS, and DSDT. 13372 13373 Added ACPI table checksum validation during table disassembly in 13374 order to catch corrupted tables. 13375 13376 13377 ---------------------------------------- 13378 22 October 2002. Summary of changes for version 20021022. 13379 13380 1) ACPI CA Core Subsystem: 13381 13382 Implemented a restriction on the Scope operator that the target 13383 must already exist in the namespace at the time the operator is 13384 encountered (during table load or method execution). In other 13385 words, forward references are not allowed and Scope() cannot 13386 create a new object. This changes the previous behavior where the 13387 interpreter would create the name if not found. This new behavior 13388 correctly enables the search-to-root algorithm during namespace 13389 lookup of the target name. Because of this upsearch, this fixes 13390 the known Compaq _SB_.OKEC problem and makes both the AML 13391 interpreter and iASL compiler compatible with other ACPI 13392 implementations. 13393 13394 Completed a major overhaul of the internal ACPI object types for 13395 the ACPI Namespace and the associated operand objects. Many of 13396 these types had become obsolete with the introduction of the two- 13397 pass namespace load. This cleanup simplifies the code and makes 13398 the entire namespace load mechanism much clearer and easier to 13399 understand. 13400 13401 Improved debug output for tracking scope opening/closing to help 13402 diagnose scoping issues. The old scope name as well as the new 13403 scope name are displayed. Also improved error messages for 13404 problems with ASL Mutex objects and error messages for GPE 13405 problems. 13406 13407 Cleaned up the namespace dump code, removed obsolete code. 13408 13409 All string output (for all namespace/object dumps) now uses the 13410 common ACPI string output procedure which handles escapes properly 13411 and does not emit non-printable characters. 13412 13413 Fixed some issues with constants in the 64-bit version of the 13414 local C library (utclib.c) 13415 13416 13417 2) Linux 13418 13419 EC Driver: No longer attempts to acquire the Global Lock at 13420 interrupt level. 13421 13422 13423 3) iASL Compiler/Disassembler 13424 13425 Implemented ACPI 2.0B grammar change that disallows all Type 1 and 13426 2 opcodes outside of a control method. This means that the 13427 "executable" operators (versus the "namespace" operators) cannot 13428 be used at the table level; they can only be used within a control 13429 method. 13430 13431 Implemented the restriction on the Scope() operator where the 13432 target must already exist in the namespace at the time the 13433 operator is encountered (during ASL compilation). In other words, 13434 forward references are not allowed and Scope() cannot create a new 13435 object. This makes the iASL compiler compatible with other ACPI 13436 implementations and makes the Scope() implementation adhere to the 13437 ACPI specification. 13438 13439 Fixed a problem where namepath optimization for the Alias operator 13440 was optimizing the wrong path (of the two namepaths.) This caused 13441 a "Missing alias link" error message. 13442 13443 Fixed a problem where an "unknown reserved name" warning could be 13444 incorrectly generated for names like "_SB" when the trailing 13445 underscore is not used in the original ASL. 13446 13447 Fixed a problem where the reserved name check did not handle 13448 NamePaths with multiple NameSegs correctly. The first nameseg of 13449 the NamePath was examined instead of the last NameSeg. 13450 13451 13452 ---------------------------------------- 13453 13454 02 October 2002. Summary of changes for this release. 13455 13456 13457 1) ACPI CA Core Subsystem version 20021002: 13458 13459 Fixed a problem where a store/copy of a string to an existing 13460 string did not always set the string length properly in the String 13461 object. 13462 13463 Fixed a reported problem with the ToString operator where the 13464 behavior was identical to the ToHexString operator instead of just 13465 simply converting a raw buffer to a string data type. 13466 13467 Fixed a problem where CopyObject and the other "explicit" 13468 conversion operators were not updating the internal namespace node 13469 type as part of the store operation. 13470 13471 Fixed a memory leak during implicit source operand conversion 13472 where the original object was not deleted if it was converted to a 13473 new object of a different type. 13474 13475 Enhanced error messages for all problems associated with namespace 13476 lookups. Common procedure generates and prints the lookup name as 13477 well as the formatted status. 13478 13479 Completed implementation of a new design for the Alias support 13480 within the namespace. The existing design did not handle the case 13481 where a new object was assigned to one of the two names due to the 13482 use of an explicit conversion operator, resulting in the two names 13483 pointing to two different objects. The new design simply points 13484 the Alias name to the original name node - not to the object. 13485 This results in a level of indirection that must be handled in the 13486 name resolution mechanism. 13487 13488 Code and Data Size: Current core subsystem library sizes are shown 13489 below. These are the code and data sizes for the acpica.lib 13490 produced by the Microsoft Visual C++ 6.0 compiler, and these 13491 values do not include any ACPI driver or OSPM code. The debug 13492 version of the code includes the debug output trace mechanism and 13493 has a larger code and data size. Note that these values will vary 13494 depending on the efficiency of the compiler and the compiler 13495 options used during generation. 13496 13497 Previous Release 13498 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 13499 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 13500 Current Release: 13501 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 13502 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 13503 13504 13505 2) Linux 13506 13507 Initialize thermal driver's timer before it is used. (Knut 13508 Neumann) 13509 13510 Allow handling negative celsius values. (Kochi Takayoshi) 13511 13512 Fix thermal management and make trip points. R/W (Pavel Machek) 13513 13514 Fix /proc/acpi/sleep. (P. Christeas) 13515 13516 IA64 fixes. (David Mosberger) 13517 13518 Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 13519 13520 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 13521 Brodowski) 13522 13523 13524 3) iASL Compiler/Disassembler 13525 13526 Clarified some warning/error messages. 13527 13528 13529 ---------------------------------------- 13530 18 September 2002. Summary of changes for this release. 13531 13532 13533 1) ACPI CA Core Subsystem version 20020918: 13534 13535 Fixed a reported problem with reference chaining (via the Index() 13536 and RefOf() operators) in the ObjectType() and SizeOf() operators. 13537 The definition of these operators includes the dereferencing of 13538 all chained references to return information on the base object. 13539 13540 Fixed a problem with stores to indexed package elements - the 13541 existing code would not complete the store if an "implicit 13542 conversion" was not performed. In other words, if the existing 13543 object (package element) was to be replaced completely, the code 13544 didn't handle this case. 13545 13546 Relaxed typechecking on the ASL "Scope" operator to allow the 13547 target name to refer to an object of type Integer, String, or 13548 Buffer, in addition to the scoping object types (Device, 13549 predefined Scopes, Processor, PowerResource, and ThermalZone.) 13550 This allows existing AML code that has workarounds for a bug in 13551 Windows to function properly. A warning is issued, however. This 13552 affects both the AML interpreter and the iASL compiler. Below is 13553 an example of this type of ASL code: 13554 13555 Name(DEB,0x00) 13556 Scope(DEB) 13557 { 13558 13559 Fixed some reported problems with 64-bit integer support in the 13560 local implementation of C library functions (clib.c) 13561 13562 13563 2) Linux 13564 13565 Use ACPI fix map region instead of IOAPIC region, since it is 13566 undefined in non-SMP. 13567 13568 Ensure that the SCI has the proper polarity and trigger, even on 13569 systems that do not have an interrupt override entry in the MADT. 13570 13571 2.5 big driver reorganization (Pat Mochel) 13572 13573 Use early table mapping code from acpitable.c (Andi Kleen) 13574 13575 New blacklist entries (Andi Kleen) 13576 13577 Blacklist improvements. Split blacklist code out into a separate 13578 file. Move checking the blacklist to very early. Previously, we 13579 would use ACPI tables, and then halfway through init, check the 13580 blacklist -- too late. Now, it's early enough to completely fall- 13581 back to non-ACPI. 13582 13583 13584 3) iASL Compiler/Disassembler version 20020918: 13585 13586 Fixed a problem where the typechecking code didn't know that an 13587 alias could point to a method. In other words, aliases were not 13588 being dereferenced during typechecking. 13589 13590 13591 ---------------------------------------- 13592 29 August 2002. Summary of changes for this release. 13593 13594 1) ACPI CA Core Subsystem Version 20020829: 13595 13596 If the target of a Scope() operator already exists, it must be an 13597 object type that actually opens a scope -- such as a Device, 13598 Method, Scope, etc. This is a fatal runtime error. Similar error 13599 check has been added to the iASL compiler also. 13600 13601 Tightened up the namespace load to disallow multiple names in the 13602 same scope. This previously was allowed if both objects were of 13603 the same type. (i.e., a lookup was the same as entering a new 13604 name). 13605 13606 13607 2) Linux 13608 13609 Ensure that the ACPI interrupt has the proper trigger and 13610 polarity. 13611 13612 local_irq_disable is extraneous. (Matthew Wilcox) 13613 13614 Make "acpi=off" actually do what it says, and not use the ACPI 13615 interpreter *or* the tables. 13616 13617 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 13618 Takayoshi) 13619 13620 13621 3) iASL Compiler/Disassembler Version 20020829: 13622 13623 Implemented namepath optimization for name declarations. For 13624 example, a declaration like "Method (\_SB_.ABCD)" would get 13625 optimized to "Method (ABCD)" if the declaration is within the 13626 \_SB_ scope. This optimization is in addition to the named 13627 reference path optimization first released in the previous 13628 version. This would seem to complete all possible optimizations 13629 for namepaths within the ASL/AML. 13630 13631 If the target of a Scope() operator already exists, it must be an 13632 object type that actually opens a scope -- such as a Device, 13633 Method, Scope, etc. 13634 13635 Implemented a check and warning for unreachable code in the same 13636 block below a Return() statement. 13637 13638 Fixed a problem where the listing file was not generated if the 13639 compiler aborted if the maximum error count was exceeded (200). 13640 13641 Fixed a problem where the typechecking of method return values was 13642 broken. This includes the check for a return value when the 13643 method is invoked as a TermArg (a return value is expected.) 13644 13645 Fixed a reported problem where EOF conditions during a quoted 13646 string or comment caused a fault. 13647 13648 13649 ---------------------------------------- 13650 15 August 2002. Summary of changes for this release. 13651 13652 1) ACPI CA Core Subsystem Version 20020815: 13653 13654 Fixed a reported problem where a Store to a method argument that 13655 contains a reference did not perform the indirect store correctly. 13656 This problem was created during the conversion to the new 13657 reference object model - the indirect store to a method argument 13658 code was not updated to reflect the new model. 13659 13660 Reworked the ACPI mode change code to better conform to ACPI 2.0, 13661 handle corner cases, and improve code legibility (Kochi Takayoshi) 13662 13663 Fixed a problem with the pathname parsing for the carat (^) 13664 prefix. The heavy use of the carat operator by the new namepath 13665 optimization in the iASL compiler uncovered a problem with the AML 13666 interpreter handling of this prefix. In the case where one or 13667 more carats precede a single nameseg, the nameseg was treated as 13668 standalone and the search rule (to root) was inadvertently 13669 applied. This could cause both the iASL compiler and the 13670 interpreter to find the wrong object or to miss the error that 13671 should occur if the object does not exist at that exact pathname. 13672 13673 Found and fixed the problem where the HP Pavilion DSDT would not 13674 load. This was a relatively minor tweak to the table loading code 13675 (a problem caused by the unexpected encounter with a method 13676 invocation not within a control method), but it does not solve the 13677 overall issue of the execution of AML code at the table level. 13678 This investigation is still ongoing. 13679 13680 Code and Data Size: Current core subsystem library sizes are shown 13681 below. These are the code and data sizes for the acpica.lib 13682 produced by the Microsoft Visual C++ 6.0 compiler, and these 13683 values do not include any ACPI driver or OSPM code. The debug 13684 version of the code includes the debug output trace mechanism and 13685 has a larger code and data size. Note that these values will vary 13686 depending on the efficiency of the compiler and the compiler 13687 options used during generation. 13688 13689 Previous Release 13690 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 13691 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 13692 Current Release: 13693 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 13694 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 13695 13696 13697 2) Linux 13698 13699 Remove redundant slab.h include (Brad Hards) 13700 13701 Fix several bugs in thermal.c (Herbert Nachtnebel) 13702 13703 Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 13704 13705 Change acpi_system_suspend to use updated irq functions (Pavel 13706 Machek) 13707 13708 Export acpi_get_firmware_table (Matthew Wilcox) 13709 13710 Use proper root proc entry for ACPI (Kochi Takayoshi) 13711 13712 Fix early-boot table parsing (Bjorn Helgaas) 13713 13714 13715 3) iASL Compiler/Disassembler 13716 13717 Reworked the compiler options to make them more consistent and to 13718 use two-letter options where appropriate. We were running out of 13719 sensible letters. This may break some makefiles, so check the 13720 current options list by invoking the compiler with no parameters. 13721 13722 Completed the design and implementation of the ASL namepath 13723 optimization option for the compiler. This option optimizes all 13724 references to named objects to the shortest possible path. The 13725 first attempt tries to utilize a single nameseg (4 characters) and 13726 the "search-to-root" algorithm used by the interpreter. If that 13727 cannot be used (because either the name is not in the search path 13728 or there is a conflict with another object with the same name), 13729 the pathname is optimized using the carat prefix (usually a 13730 shorter string than specifying the entire path from the root.) 13731 13732 Implemented support to obtain the DSDT from the Windows registry 13733 (when the disassembly option is specified with no input file). 13734 Added this code as the implementation for AcpiOsTableOverride in 13735 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 13736 utility) to scan memory for the DSDT to the AcpiOsTableOverride 13737 function in the DOS OSL to make the disassembler truly OS 13738 independent. 13739 13740 Implemented a new option to disassemble and compile in one step. 13741 When used without an input filename, this option will grab the 13742 DSDT from the local machine, disassemble it, and compile it in one 13743 step. 13744 13745 Added a warning message for invalid escapes (a backslash followed 13746 by any character other than the allowable escapes). This catches 13747 the quoted string error "\_SB_" (which should be "\\_SB_" ). 13748 13749 Also, there are numerous instances in the ACPI specification where 13750 this error occurs. 13751 13752 Added a compiler option to disable all optimizations. This is 13753 basically the "compatibility mode" because by using this option, 13754 the AML code will come out exactly the same as other ASL 13755 compilers. 13756 13757 Added error messages for incorrectly ordered dependent resource 13758 functions. This includes: missing EndDependentFn macro at end of 13759 dependent resource list, nested dependent function macros (both 13760 start and end), and missing StartDependentFn macro. These are 13761 common errors that should be caught at compile time. 13762 13763 Implemented _OSI support for the disassembler and compiler. _OSI 13764 must be included in the namespace for proper disassembly (because 13765 the disassembler must know the number of arguments.) 13766 13767 Added an "optimization" message type that is optional (off by 13768 default). This message is used for all optimizations - including 13769 constant folding, integer optimization, and namepath optimization. 13770 13771 ---------------------------------------- 13772 25 July 2002. Summary of changes for this release. 13773 13774 13775 1) ACPI CA Core Subsystem Version 20020725: 13776 13777 The AML Disassembler has been enhanced to produce compilable ASL 13778 code and has been integrated into the iASL compiler (see below) as 13779 well as the single-step disassembly for the AML debugger and the 13780 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 13781 resource templates and macros are fully supported. The 13782 disassembler has been tested on over 30 different AML files, 13783 producing identical AML when the resulting disassembled ASL file 13784 is recompiled with the same ASL compiler. 13785 13786 Modified the Resource Manager to allow zero interrupts and zero 13787 dma channels during the GetCurrentResources call. This was 13788 causing problems on some platforms. 13789 13790 Added the AcpiOsRedirectOutput interface to the OSL to simplify 13791 output redirection for the AcpiOsPrintf and AcpiOsVprintf 13792 interfaces. 13793 13794 Code and Data Size: Current core subsystem library sizes are shown 13795 below. These are the code and data sizes for the acpica.lib 13796 produced by the Microsoft Visual C++ 6.0 compiler, and these 13797 values do not include any ACPI driver or OSPM code. The debug 13798 version of the code includes the debug output trace mechanism and 13799 has a larger code and data size. Note that these values will vary 13800 depending on the efficiency of the compiler and the compiler 13801 options used during generation. 13802 13803 Previous Release 13804 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 13805 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 13806 Current Release: 13807 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 13808 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 13809 13810 13811 2) Linux 13812 13813 Fixed a panic in the EC driver (Dominik Brodowski) 13814 13815 Implemented checksum of the R/XSDT itself during Linux table scan 13816 (Richard Schaal) 13817 13818 13819 3) iASL compiler 13820 13821 The AML disassembler is integrated into the compiler. The "-d" 13822 option invokes the disassembler to completely disassemble an 13823 input AML file, producing as output a text ASL file with the 13824 extension ".dsl" (to avoid name collisions with existing .asl 13825 source files.) A future enhancement will allow the disassembler 13826 to obtain the BIOS DSDT from the registry under Windows. 13827 13828 Fixed a problem with the VendorShort and VendorLong resource 13829 descriptors where an invalid AML sequence was created. 13830 13831 Implemented a fix for BufferData term in the ASL parser. It was 13832 inadvertently defined twice, allowing invalid syntax to pass and 13833 causing reduction conflicts. 13834 13835 Fixed a problem where the Ones opcode could get converted to a 13836 value of zero if "Ones" was used where a byte, word or dword value 13837 was expected. The 64-bit value is now truncated to the correct 13838 size with the correct value. 13839 13840 13841 13842 ---------------------------------------- 13843 02 July 2002. Summary of changes for this release. 13844 13845 13846 1) ACPI CA Core Subsystem Version 20020702: 13847 13848 The Table Manager code has been restructured to add several new 13849 features. Tables that are not required by the core subsystem 13850 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 13851 validated in any way and are returned from AcpiGetFirmwareTable if 13852 requested. The AcpiOsTableOverride interface is now called for 13853 each table that is loaded by the subsystem in order to allow the 13854 host to override any table it chooses. Previously, only the DSDT 13855 could be overridden. Added one new files, tbrsdt.c and 13856 tbgetall.c. 13857 13858 Fixed a problem with the conversion of internal package objects to 13859 external objects (when a package is returned from a control 13860 method.) The return buffer length was set to zero instead of the 13861 proper length of the package object. 13862 13863 Fixed a reported problem with the use of the RefOf and DeRefOf 13864 operators when passing reference arguments to control methods. A 13865 new type of Reference object is used internally for references 13866 produced by the RefOf operator. 13867 13868 Added additional error messages in the Resource Manager to explain 13869 AE_BAD_DATA errors when they occur during resource parsing. 13870 13871 Split the AcpiEnableSubsystem into two primitives to enable a 13872 finer granularity initialization sequence. These two calls should 13873 be called in this order: AcpiEnableSubsystem (flags), 13874 AcpiInitializeObjects (flags). The flags parameter remains the 13875 same. 13876 13877 13878 2) Linux 13879 13880 Updated the ACPI utilities module to understand the new style of 13881 fully resolved package objects that are now returned from the core 13882 subsystem. This eliminates errors of the form: 13883 13884 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 13885 acpi_utils-0430 [145] acpi_evaluate_reference: 13886 Invalid element in package (not a device reference) 13887 13888 The method evaluation utility uses the new buffer allocation 13889 scheme instead of calling AcpiEvaluate Object twice. 13890 13891 Added support for ECDT. This allows the use of the Embedded 13892 13893 Controller before the namespace has been fully initialized, which 13894 is necessary for ACPI 2.0 support, and for some laptops to 13895 initialize properly. (Laptops using ECDT are still rare, so only 13896 limited testing was performed of the added functionality.) 13897 13898 Fixed memory leaks in the EC driver. 13899 13900 Eliminated a brittle code structure in acpi_bus_init(). 13901 13902 Eliminated the acpi_evaluate() helper function in utils.c. It is 13903 no longer needed since acpi_evaluate_object can optionally 13904 allocate memory for the return object. 13905 13906 Implemented fix for keyboard hang when getting battery readings on 13907 some systems (Stephen White) 13908 13909 PCI IRQ routing update (Dominik Brodowski) 13910 13911 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 13912 support 13913 13914 ---------------------------------------- 13915 11 June 2002. Summary of changes for this release. 13916 13917 13918 1) ACPI CA Core Subsystem Version 20020611: 13919 13920 Fixed a reported problem where constants such as Zero and One 13921 appearing within _PRT packages were not handled correctly within 13922 the resource manager code. Originally reported against the ASL 13923 compiler because the code generator now optimizes integers to 13924 their minimal AML representation (i.e. AML constants if possible.) 13925 The _PRT code now handles all AML constant opcodes correctly 13926 (Zero, One, Ones, Revision). 13927 13928 Fixed a problem with the Concatenate operator in the AML 13929 interpreter where a buffer result object was incorrectly marked as 13930 not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 13931 13932 All package sub-objects are now fully resolved before they are 13933 returned from the external ACPI interfaces. This means that name 13934 strings are resolved to object handles, and constant operators 13935 (Zero, One, Ones, Revision) are resolved to Integers. 13936 13937 Implemented immediate resolution of the AML Constant opcodes 13938 (Zero, One, Ones, Revision) to Integer objects upon detection 13939 within the AML stream. This has simplified and reduced the 13940 generated code size of the subsystem by eliminating about 10 13941 switch statements for these constants (which previously were 13942 contained in Reference objects.) The complicating issues are that 13943 the Zero opcode is used as a "placeholder" for unspecified 13944 optional target operands and stores to constants are defined to be 13945 no-ops. 13946 13947 Code and Data Size: Current core subsystem library sizes are shown 13948 below. These are the code and data sizes for the acpica.lib 13949 produced by the Microsoft Visual C++ 6.0 compiler, and these 13950 values do not include any ACPI driver or OSPM code. The debug 13951 version of the code includes the debug output trace mechanism and 13952 has a larger code and data size. Note that these values will vary 13953 depending on the efficiency of the compiler and the compiler 13954 options used during generation. 13955 13956 Previous Release 13957 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 13958 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 13959 Current Release: 13960 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 13961 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 13962 13963 13964 2) Linux 13965 13966 13967 Added preliminary support for obtaining _TRA data for PCI root 13968 bridges (Bjorn Helgaas). 13969 13970 13971 3) iASL Compiler Version X2046: 13972 13973 Fixed a problem where the "_DDN" reserved name was defined to be a 13974 control method with one argument. There are no arguments, and 13975 _DDN does not have to be a control method. 13976 13977 Fixed a problem with the Linux version of the compiler where the 13978 source lines printed with error messages were the wrong lines. 13979 This turned out to be the "LF versus CR/LF" difference between 13980 Windows and Unix. This appears to be the longstanding issue 13981 concerning listing output and error messages. 13982 13983 Fixed a problem with the Linux version of compiler where opcode 13984 names within error messages were wrong. This was caused by a 13985 slight difference in the output of the Flex tool on Linux versus 13986 Windows. 13987 13988 Fixed a problem with the Linux compiler where the hex output files 13989 contained some garbage data caused by an internal buffer overrun. 13990 13991 13992 ---------------------------------------- 13993 17 May 2002. Summary of changes for this release. 13994 13995 13996 1) ACPI CA Core Subsystem Version 20020517: 13997 13998 Implemented a workaround to an BIOS bug discovered on the HP 13999 OmniBook where the FADT revision number and the table size are 14000 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 14001 behavior is to fallback to using only the ACPI 1.0 fields of the 14002 FADT if the table is too small to be a ACPI 2.0 table as claimed 14003 by the revision number. Although this is a BIOS bug, this is a 14004 case where the workaround is simple enough and with no side 14005 effects, so it seemed prudent to add it. A warning message is 14006 issued, however. 14007 14008 Implemented minimum size checks for the fixed-length ACPI tables - 14009 - the FADT and FACS, as well as consistency checks between the 14010 revision number and the table size. 14011 14012 Fixed a reported problem in the table override support where the 14013 new table pointer was incorrectly treated as a physical address 14014 instead of a logical address. 14015 14016 Eliminated the use of the AE_AML_ERROR exception and replaced it 14017 with more descriptive codes. 14018 14019 Fixed a problem where an exception would occur if an ASL Field was 14020 defined with no named Field Units underneath it (used by some 14021 index fields). 14022 14023 Code and Data Size: Current core subsystem library sizes are shown 14024 below. These are the code and data sizes for the acpica.lib 14025 produced by the Microsoft Visual C++ 6.0 compiler, and these 14026 values do not include any ACPI driver or OSPM code. The debug 14027 version of the code includes the debug output trace mechanism and 14028 has a larger code and data size. Note that these values will vary 14029 depending on the efficiency of the compiler and the compiler 14030 options used during generation. 14031 14032 Previous Release 14033 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 14034 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 14035 Current Release: 14036 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 14037 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 14038 14039 14040 14041 2) Linux 14042 14043 Much work done on ACPI init (MADT and PCI IRQ routing support). 14044 (Paul D. and Dominik Brodowski) 14045 14046 Fix PCI IRQ-related panic on boot (Sam Revitch) 14047 14048 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 14049 14050 Fix "MHz" typo (Dominik Brodowski) 14051 14052 Fix RTC year 2000 issue (Dominik Brodowski) 14053 14054 Preclude multiple button proc entries (Eric Brunet) 14055 14056 Moved arch-specific code out of include/platform/aclinux.h 14057 14058 3) iASL Compiler Version X2044: 14059 14060 Implemented error checking for the string used in the EISAID macro 14061 (Usually used in the definition of the _HID object.) The code now 14062 strictly enforces the PnP format - exactly 7 characters, 3 14063 uppercase letters and 4 hex digits. 14064 14065 If a raw string is used in the definition of the _HID object 14066 (instead of the EISAID macro), the string must contain all 14067 alphanumeric characters (e.g., "*PNP0011" is not allowed because 14068 of the asterisk.) 14069 14070 Implemented checking for invalid use of ACPI reserved names for 14071 most of the name creation operators (Name, Device, Event, Mutex, 14072 OperationRegion, PowerResource, Processor, and ThermalZone.) 14073 Previously, this check was only performed for control methods. 14074 14075 Implemented an additional check on the Name operator to emit an 14076 error if a reserved name that must be implemented in ASL as a 14077 control method is used. We know that a reserved name must be a 14078 method if it is defined with input arguments. 14079 14080 The warning emitted when a namespace object reference is not found 14081 during the cross reference phase has been changed into an error. 14082 The "External" directive should be used for names defined in other 14083 modules. 14084 14085 14086 4) Tools and Utilities 14087 14088 The 16-bit tools (adump16 and aexec16) have been regenerated and 14089 tested. 14090 14091 Fixed a problem with the output of both acpidump and adump16 where 14092 the indentation of closing parentheses and brackets was not 14093 14094 aligned properly with the parent block. 14095 14096 14097 ---------------------------------------- 14098 03 May 2002. Summary of changes for this release. 14099 14100 14101 1) ACPI CA Core Subsystem Version 20020503: 14102 14103 Added support a new OSL interface that allows the host operating 14104 14105 system software to override the DSDT found in the firmware - 14106 AcpiOsTableOverride. With this interface, the OSL can examine the 14107 version of the firmware DSDT and replace it with a different one 14108 if desired. 14109 14110 Added new external interfaces for accessing ACPI registers from 14111 device drivers and other system software - AcpiGetRegister and 14112 AcpiSetRegister. This was simply an externalization of the 14113 existing AcpiHwBitRegister interfaces. 14114 14115 Fixed a regression introduced in the previous build where the 14116 ASL/AML CreateField operator always returned an error, 14117 "destination must be a NS Node". 14118 14119 Extended the maximum time (before failure) to successfully enable 14120 ACPI mode to 3 seconds. 14121 14122 Code and Data Size: Current core subsystem library sizes are shown 14123 below. These are the code and data sizes for the acpica.lib 14124 produced by the Microsoft Visual C++ 6.0 compiler, and these 14125 values do not include any ACPI driver or OSPM code. The debug 14126 version of the code includes the debug output trace mechanism and 14127 has a larger code and data size. Note that these values will vary 14128 depending on the efficiency of the compiler and the compiler 14129 options used during generation. 14130 14131 Previous Release 14132 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 14133 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 14134 Current Release: 14135 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 14136 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 14137 14138 14139 2) Linux 14140 14141 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 14142 free. While 3 out of 4 of our in-house systems work fine, the last 14143 one still hangs when testing the LAPIC timer. 14144 14145 Renamed many files in 2.5 kernel release to omit "acpi_" from the 14146 name. 14147 14148 Added warning on boot for Presario 711FR. 14149 14150 Sleep improvements (Pavel Machek) 14151 14152 ACPI can now be built without CONFIG_PCI enabled. 14153 14154 IA64: Fixed memory map functions (JI Lee) 14155 14156 14157 3) iASL Compiler Version X2043: 14158 14159 Added support to allow the compiler to be integrated into the MS 14160 VC++ development environment for one-button compilation of single 14161 files or entire projects -- with error-to-source-line mapping. 14162 14163 Implemented support for compile-time constant folding for the 14164 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 14165 specification. This allows the ASL writer to use expressions 14166 instead of Integer/Buffer/String constants in terms that must 14167 evaluate to constants at compile time and will also simplify the 14168 emitted AML in any such sub-expressions that can be folded 14169 (evaluated at compile-time.) This increases the size of the 14170 compiler significantly because a portion of the ACPI CA AML 14171 interpreter is included within the compiler in order to pre- 14172 evaluate constant expressions. 14173 14174 14175 Fixed a problem with the "Unicode" ASL macro that caused the 14176 compiler to fault. (This macro is used in conjunction with the 14177 _STR reserved name.) 14178 14179 Implemented an AML opcode optimization to use the Zero, One, and 14180 Ones opcodes where possible to further reduce the size of integer 14181 constants and thus reduce the overall size of the generated AML 14182 code. 14183 14184 Implemented error checking for new reserved terms for ACPI version 14185 2.0A. 14186 14187 Implemented the -qr option to display the current list of ACPI 14188 reserved names known to the compiler. 14189 14190 Implemented the -qc option to display the current list of ASL 14191 operators that are allowed within constant expressions and can 14192 therefore be folded at compile time if the operands are constants. 14193 14194 14195 4) Documentation 14196 14197 Updated the Programmer's Reference for new interfaces, data types, 14198 and memory allocation model options. 14199 14200 Updated the iASL Compiler User Reference to apply new format and 14201 add information about new features and options. 14202 14203 ---------------------------------------- 14204 19 April 2002. Summary of changes for this release. 14205 14206 1) ACPI CA Core Subsystem Version 20020419: 14207 14208 The source code base for the Core Subsystem has been completely 14209 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 14210 versions. The Lint option files used are included in the 14211 /acpi/generate/lint directory. 14212 14213 Implemented enhanced status/error checking across the entire 14214 Hardware manager subsystem. Any hardware errors (reported from 14215 the OSL) are now bubbled up and will abort a running control 14216 method. 14217 14218 14219 Fixed a problem where the per-ACPI-table integer width (32 or 64) 14220 was stored only with control method nodes, causing a fault when 14221 non-control method code was executed during table loading. The 14222 solution implemented uses a global variable to indicate table 14223 width across the entire ACPI subsystem. Therefore, ACPI CA does 14224 not support mixed integer widths across different ACPI tables 14225 (DSDT, SSDT). 14226 14227 Fixed a problem where NULL extended fields (X fields) in an ACPI 14228 2.0 ACPI FADT caused the table load to fail. Although the 14229 existing ACPI specification is a bit fuzzy on this topic, the new 14230 behavior is to fall back on a ACPI 1.0 field if the corresponding 14231 ACPI 2.0 X field is zero (even though the table revision indicates 14232 a full ACPI 2.0 table.) The ACPI specification will be updated to 14233 clarify this issue. 14234 14235 Fixed a problem with the SystemMemory operation region handler 14236 where memory was always accessed byte-wise even if the AML- 14237 specified access width was larger than a byte. This caused 14238 problems on systems with memory-mapped I/O. Memory is now 14239 accessed with the width specified. On systems that do not support 14240 non-aligned transfers, a check is made to guarantee proper address 14241 alignment before proceeding in order to avoid an AML-caused 14242 alignment fault within the kernel. 14243 14244 14245 Fixed a problem with the ExtendedIrq resource where only one byte 14246 of the 4-byte Irq field was extracted. 14247 14248 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 14249 function was out of date and required a rewrite. 14250 14251 Code and Data Size: Current core subsystem library sizes are shown 14252 below. These are the code and data sizes for the acpica.lib 14253 produced by the Microsoft Visual C++ 6.0 compiler, and these 14254 values do not include any ACPI driver or OSPM code. The debug 14255 version of the code includes the debug output trace mechanism and 14256 has a larger code and data size. Note that these values will vary 14257 depending on the efficiency of the compiler and the compiler 14258 options used during generation. 14259 14260 Previous Release 14261 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 14262 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 14263 Current Release: 14264 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 14265 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 14266 14267 14268 2) Linux 14269 14270 PCI IRQ routing fixes (Dominik Brodowski) 14271 14272 14273 3) iASL Compiler Version X2042: 14274 14275 Implemented an additional compile-time error check for a field 14276 unit whose size + minimum access width would cause a run-time 14277 access beyond the end-of-region. Previously, only the field size 14278 itself was checked. 14279 14280 The Core subsystem and iASL compiler now share a common parse 14281 object in preparation for compile-time evaluation of the type 14282 3/4/5 ASL operators. 14283 14284 14285 ---------------------------------------- 14286 Summary of changes for this release: 03_29_02 14287 14288 1) ACPI CA Core Subsystem Version 20020329: 14289 14290 Implemented support for late evaluation of TermArg operands to 14291 Buffer and Package objects. This allows complex expressions to be 14292 used in the declarations of these object types. 14293 14294 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 14295 1.0, if the field was larger than 32 bits, it was returned as a 14296 buffer - otherwise it was returned as an integer. In ACPI 2.0, 14297 the field is returned as a buffer only if the field is larger than 14298 64 bits. The TableRevision is now considered when making this 14299 conversion to avoid incompatibility with existing ASL code. 14300 14301 Implemented logical addressing for AcpiOsGetRootPointer. This 14302 allows an RSDP with either a logical or physical address. With 14303 this support, the host OS can now override all ACPI tables with 14304 one logical RSDP. Includes implementation of "typed" pointer 14305 support to allow a common data type for both physical and logical 14306 pointers internally. This required a change to the 14307 AcpiOsGetRootPointer interface. 14308 14309 Implemented the use of ACPI 2.0 Generic Address Structures for all 14310 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 14311 mapped I/O for these ACPI features. 14312 14313 Initialization now ignores not only non-required tables (All 14314 tables other than the FADT, FACS, DSDT, and SSDTs), but also does 14315 not validate the table headers of unrecognized tables. 14316 14317 Fixed a problem where a notify handler could only be 14318 installed/removed on an object of type Device. All "notify" 14319 14320 objects are now supported -- Devices, Processor, Power, and 14321 Thermal. 14322 14323 Removed most verbosity from the ACPI_DB_INFO debug level. Only 14324 critical information is returned when this debug level is enabled. 14325 14326 Code and Data Size: Current core subsystem library sizes are shown 14327 below. These are the code and data sizes for the acpica.lib 14328 produced by the Microsoft Visual C++ 6.0 compiler, and these 14329 values do not include any ACPI driver or OSPM code. The debug 14330 version of the code includes the debug output trace mechanism and 14331 has a larger code and data size. Note that these values will vary 14332 depending on the efficiency of the compiler and the compiler 14333 options used during generation. 14334 14335 Previous Release 14336 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 14337 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 14338 Current Release: 14339 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 14340 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 14341 14342 14343 2) Linux: 14344 14345 The processor driver (acpi_processor.c) now fully supports ACPI 14346 2.0-based processor performance control (e.g. Intel(R) 14347 SpeedStep(TM) technology) Note that older laptops that only have 14348 the Intel "applet" interface are not supported through this. The 14349 'limit' and 'performance' interface (/proc) are fully functional. 14350 [Note that basic policy for controlling performance state 14351 transitions will be included in the next version of ospmd.] The 14352 idle handler was modified to more aggressively use C2, and PIIX4 14353 errata handling underwent a complete overhaul (big thanks to 14354 Dominik Brodowski). 14355 14356 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 14357 based devices in the ACPI namespace are now dynamically bound 14358 (associated) with their PCI counterparts (e.g. PCI1->01:00.0). 14359 This allows, among other things, ACPI to resolve bus numbers for 14360 subordinate PCI bridges. 14361 14362 Enhanced PCI IRQ routing to get the proper bus number for _PRT 14363 entries defined underneath PCI bridges. 14364 14365 Added IBM 600E to bad bios list due to invalid _ADR value for 14366 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 14367 14368 In the process of adding full MADT support (e.g. IOAPIC) for IA32 14369 (acpi.c, mpparse.c) -- stay tuned. 14370 14371 Added back visual differentiation between fixed-feature and 14372 control-method buttons in dmesg. Buttons are also subtyped (e.g. 14373 button/power/PWRF) to simplify button identification. 14374 14375 We no longer use -Wno-unused when compiling debug. Please ignore 14376 any "_THIS_MODULE defined but not used" messages. 14377 14378 Can now shut down the system using "magic sysrq" key. 14379 14380 14381 3) iASL Compiler version 2041: 14382 14383 Fixed a problem where conversion errors for hex/octal/decimal 14384 constants were not reported. 14385 14386 Implemented a fix for the General Register template Address field. 14387 This field was 8 bits when it should be 64. 14388 14389 Fixed a problem where errors/warnings were no longer being emitted 14390 within the listing output file. 14391 14392 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 14393 exactly 4 characters, alphanumeric only. 14394 14395 14396 14397 14398 ---------------------------------------- 14399 Summary of changes for this release: 03_08_02 14400 14401 14402 1) ACPI CA Core Subsystem Version 20020308: 14403 14404 Fixed a problem with AML Fields where the use of the "AccessAny" 14405 keyword could cause an interpreter error due to attempting to read 14406 or write beyond the end of the parent Operation Region. 14407 14408 Fixed a problem in the SystemMemory Operation Region handler where 14409 an attempt was made to map memory beyond the end of the region. 14410 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 14411 errors on some Linux systems. 14412 14413 Fixed a problem where the interpreter/namespace "search to root" 14414 algorithm was not functioning for some object types. Relaxed the 14415 internal restriction on the search to allow upsearches for all 14416 external object types as well as most internal types. 14417 14418 14419 2) Linux: 14420 14421 We now use safe_halt() macro versus individual calls to sti | hlt. 14422 14423 Writing to the processor limit interface should now work. "echo 1" 14424 will increase the limit, 2 will decrease, and 0 will reset to the 14425 14426 default. 14427 14428 14429 3) ASL compiler: 14430 14431 Fixed segfault on Linux version. 14432 14433 14434 ---------------------------------------- 14435 Summary of changes for this release: 02_25_02 14436 14437 1) ACPI CA Core Subsystem: 14438 14439 14440 Fixed a problem where the GPE bit masks were not initialized 14441 properly, causing erratic GPE behavior. 14442 14443 Implemented limited support for multiple calling conventions. The 14444 code can be generated with either the VPL (variable parameter 14445 list, or "C") convention, or the FPL (fixed parameter list, or 14446 "Pascal") convention. The core subsystem is about 3.4% smaller 14447 when generated with FPL. 14448 14449 14450 2) Linux 14451 14452 Re-add some /proc/acpi/event functionality that was lost during 14453 the rewrite 14454 14455 Resolved issue with /proc events for fixed-feature buttons showing 14456 up as the system device. 14457 14458 Fixed checks on C2/C3 latencies to be inclusive of maximum values. 14459 14460 Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 14461 14462 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 14463 14464 Fixed limit interface & usage to fix bugs with passive cooling 14465 hysterisis. 14466 14467 Restructured PRT support. 14468 14469 14470 ---------------------------------------- 14471 Summary of changes for this label: 02_14_02 14472 14473 14474 1) ACPI CA Core Subsystem: 14475 14476 Implemented support in AcpiLoadTable to allow loading of FACS and 14477 FADT tables. 14478 14479 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 14480 been removed. All 64-bit platforms should be migrated to the ACPI 14481 2.0 tables. The actbl71.h header has been removed from the source 14482 tree. 14483 14484 All C macros defined within the subsystem have been prefixed with 14485 "ACPI_" to avoid collision with other system include files. 14486 14487 Removed the return value for the two AcpiOsPrint interfaces, since 14488 it is never used and causes lint warnings for ignoring the return 14489 value. 14490 14491 Added error checking to all internal mutex acquire and release 14492 calls. Although a failure from one of these interfaces is 14493 probably a fatal system error, these checks will cause the 14494 immediate abort of the currently executing method or interface. 14495 14496 Fixed a problem where the AcpiSetCurrentResources interface could 14497 fault. This was a side effect of the deployment of the new memory 14498 allocation model. 14499 14500 Fixed a couple of problems with the Global Lock support introduced 14501 in the last major build. The "common" (1.0/2.0) internal FACS was 14502 being overwritten with the FACS signature and clobbering the 14503 Global Lock pointer. Also, the actual firmware FACS was being 14504 unmapped after construction of the "common" FACS, preventing 14505 access to the actual Global Lock field within it. The "common" 14506 internal FACS is no longer installed as an actual ACPI table; it 14507 is used simply as a global. 14508 14509 Code and Data Size: Current core subsystem library sizes are shown 14510 below. These are the code and data sizes for the acpica.lib 14511 produced by the Microsoft Visual C++ 6.0 compiler, and these 14512 values do not include any ACPI driver or OSPM code. The debug 14513 version of the code includes the debug output trace mechanism and 14514 has a larger code and data size. Note that these values will vary 14515 depending on the efficiency of the compiler and the compiler 14516 options used during generation. 14517 14518 Previous Release (02_07_01) 14519 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 14520 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 14521 Current Release: 14522 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 14523 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 14524 14525 14526 2) Linux 14527 14528 Updated Linux-specific code for core macro and OSL interface 14529 changes described above. 14530 14531 Improved /proc/acpi/event. It now can be opened only once and has 14532 proper poll functionality. 14533 14534 Fixed and restructured power management (acpi_bus). 14535 14536 Only create /proc "view by type" when devices of that class exist. 14537 14538 Fixed "charging/discharging" bug (and others) in acpi_battery. 14539 14540 Improved thermal zone code. 14541 14542 14543 3) ASL Compiler, version X2039: 14544 14545 14546 Implemented the new compiler restriction on ASL String hex/octal 14547 escapes to non-null, ASCII values. An error results if an invalid 14548 value is used. (This will require an ACPI 2.0 specification 14549 change.) 14550 14551 AML object labels that are output to the optional C and ASM source 14552 are now prefixed with both the ACPI table signature and table ID 14553 to help guarantee uniqueness within a large BIOS project. 14554 14555 14556 ---------------------------------------- 14557 Summary of changes for this label: 02_01_02 14558 14559 1) ACPI CA Core Subsystem: 14560 14561 ACPI 2.0 support is complete in the entire Core Subsystem and the 14562 ASL compiler. All new ACPI 2.0 operators are implemented and all 14563 other changes for ACPI 2.0 support are complete. With 14564 simultaneous code and data optimizations throughout the subsystem, 14565 ACPI 2.0 support has been implemented with almost no additional 14566 cost in terms of code and data size. 14567 14568 Implemented a new mechanism for allocation of return buffers. If 14569 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 14570 be allocated on behalf of the caller. Consolidated all return 14571 buffer validation and allocation to a common procedure. Return 14572 buffers will be allocated via the primary OSL allocation interface 14573 since it appears that a separate pool is not needed by most users. 14574 If a separate pool is required for these buffers, the caller can 14575 still use the original mechanism and pre-allocate the buffer(s). 14576 14577 Implemented support for string operands within the DerefOf 14578 operator. 14579 14580 Restructured the Hardware and Event managers to be table driven, 14581 simplifying the source code and reducing the amount of generated 14582 code. 14583 14584 Split the common read/write low-level ACPI register bitfield 14585 procedure into a separate read and write, simplifying the code 14586 considerably. 14587 14588 Obsoleted the AcpiOsCallocate OSL interface. This interface was 14589 used only a handful of times and didn't have enough critical mass 14590 for a separate interface. Replaced with a common calloc procedure 14591 in the core. 14592 14593 Fixed a reported problem with the GPE number mapping mechanism 14594 that allows GPE1 numbers to be non-contiguous with GPE0. 14595 Reorganized the GPE information and shrunk a large array that was 14596 originally large enough to hold info for all possible GPEs (256) 14597 to simply large enough to hold all GPEs up to the largest GPE 14598 number on the machine. 14599 14600 Fixed a reported problem with resource structure alignment on 64- 14601 bit platforms. 14602 14603 Changed the AcpiEnableEvent and AcpiDisableEvent external 14604 interfaces to not require any flags for the common case of 14605 enabling/disabling a GPE. 14606 14607 Implemented support to allow a "Notify" on a Processor object. 14608 14609 Most TBDs in comments within the source code have been resolved 14610 and eliminated. 14611 14612 14613 Fixed a problem in the interpreter where a standalone parent 14614 prefix (^) was not handled correctly in the interpreter and 14615 debugger. 14616 14617 Removed obsolete and unnecessary GPE save/restore code. 14618 14619 Implemented Field support in the ASL Load operator. This allows a 14620 table to be loaded from a named field, in addition to loading a 14621 table directly from an Operation Region. 14622 14623 Implemented timeout and handle support in the external Global Lock 14624 interfaces. 14625 14626 Fixed a problem in the AcpiDump utility where pathnames were no 14627 longer being generated correctly during the dump of named objects. 14628 14629 Modified the AML debugger to give a full display of if/while 14630 predicates instead of just one AML opcode at a time. (The 14631 predicate can have several nested ASL statements.) The old method 14632 was confusing during single stepping. 14633 14634 Code and Data Size: Current core subsystem library sizes are shown 14635 below. These are the code and data sizes for the acpica.lib 14636 produced by the Microsoft Visual C++ 6.0 compiler, and these 14637 values do not include any ACPI driver or OSPM code. The debug 14638 version of the code includes the debug output trace mechanism and 14639 has a larger code and data size. Note that these values will vary 14640 depending on the efficiency of the compiler and the compiler 14641 options used during generation. 14642 14643 Previous Release (12_18_01) 14644 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 14645 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 14646 Current Release: 14647 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 14648 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 14649 14650 2) Linux 14651 14652 Implemented fix for PIIX reverse throttling errata (Processor 14653 driver) 14654 14655 Added new Limit interface (Processor and Thermal drivers) 14656 14657 New thermal policy (Thermal driver) 14658 14659 Many updates to /proc 14660 14661 Battery "low" event support (Battery driver) 14662 14663 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 14664 14665 IA32 - IA64 initialization unification, no longer experimental 14666 14667 Menuconfig options redesigned 14668 14669 3) ASL Compiler, version X2037: 14670 14671 Implemented several new output features to simplify integration of 14672 AML code into firmware: 1) Output the AML in C source code with 14673 labels for each named ASL object. The original ASL source code 14674 is interleaved as C comments. 2) Output the AML in ASM source code 14675 with labels and interleaved ASL source. 3) Output the AML in 14676 raw hex table form, in either C or ASM. 14677 14678 Implemented support for optional string parameters to the 14679 LoadTable operator. 14680 14681 Completed support for embedded escape sequences within string 14682 literals. The compiler now supports all single character escapes 14683 as well as the Octal and Hex escapes. Note: the insertion of a 14684 null byte into a string literal (via the hex/octal escape) causes 14685 the string to be immediately terminated. A warning is issued. 14686 14687 Fixed a problem where incorrect AML was generated for the case 14688 where an ASL namepath consists of a single parent prefix ( 14689 14690 ) with no trailing name segments. 14691 14692 The compiler has been successfully generated with a 64-bit C 14693 compiler. 14694 14695 14696 14697 14698 ---------------------------------------- 14699 Summary of changes for this label: 12_18_01 14700 14701 1) Linux 14702 14703 Enhanced blacklist with reason and severity fields. Any table's 14704 signature may now be used to identify a blacklisted system. 14705 14706 Call _PIC control method to inform the firmware which interrupt 14707 model the OS is using. Turn on any disabled link devices. 14708 14709 Cleaned up busmgr /proc error handling (Andreas Dilger) 14710 14711 2) ACPI CA Core Subsystem: 14712 14713 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 14714 while loop) 14715 14716 Completed implementation of the ACPI 2.0 "Continue", 14717 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 14718 operators. All new ACPI 2.0 operators are now implemented in both 14719 the ASL compiler and the AML interpreter. The only remaining ACPI 14720 2.0 task is support for the String data type in the DerefOf 14721 operator. Fixed a problem with AcquireMutex where the status code 14722 was lost if the caller had to actually wait for the mutex. 14723 14724 Increased the maximum ASL Field size from 64K bits to 4G bits. 14725 14726 Completed implementation of the external Global Lock interfaces -- 14727 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 14728 Handler parameters were added. 14729 14730 Completed another pass at removing warnings and issues when 14731 compiling with 64-bit compilers. The code now compiles cleanly 14732 with the Intel 64-bit C/C++ compiler. Most notably, the pointer 14733 add and subtract (diff) macros have changed considerably. 14734 14735 14736 Created and deployed a new ACPI_SIZE type that is 64-bits wide on 14737 64-bit platforms, 32-bits on all others. This type is used 14738 wherever memory allocation and/or the C sizeof() operator is used, 14739 and affects the OSL memory allocation interfaces AcpiOsAllocate 14740 and AcpiOsCallocate. 14741 14742 Implemented sticky user breakpoints in the AML debugger. 14743 14744 Code and Data Size: Current core subsystem library sizes are shown 14745 below. These are the code and data sizes for the acpica.lib 14746 produced by the Microsoft Visual C++ 6.0 compiler, and these 14747 values do not include any ACPI driver or OSPM code. The debug 14748 version of the code includes the debug output trace mechanism and 14749 has a larger code and data size. Note that these values will vary 14750 depending on the efficiency of the compiler and the compiler 14751 options used during generation. 14752 14753 Previous Release (12_05_01) 14754 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 14755 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 14756 Current Release: 14757 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 14758 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 14759 14760 3) ASL Compiler, version X2034: 14761 14762 Now checks for (and generates an error if detected) the use of a 14763 Break or Continue statement without an enclosing While statement. 14764 14765 14766 Successfully generated the compiler with the Intel 64-bit C 14767 compiler. 14768 14769 ---------------------------------------- 14770 Summary of changes for this label: 12_05_01 14771 14772 1) ACPI CA Core Subsystem: 14773 14774 The ACPI 2.0 CopyObject operator is fully implemented. This 14775 operator creates a new copy of an object (and is also used to 14776 bypass the "implicit conversion" mechanism of the Store operator.) 14777 14778 The ACPI 2.0 semantics for the SizeOf operator are fully 14779 implemented. The change is that performing a SizeOf on a 14780 reference object causes an automatic dereference of the object to 14781 tha actual value before the size is evaluated. This behavior was 14782 undefined in ACPI 1.0. 14783 14784 The ACPI 2.0 semantics for the Extended IRQ resource descriptor 14785 have been implemented. The interrupt polarity and mode are now 14786 independently set. 14787 14788 Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 14789 appearing in Package objects were not properly converted to 14790 integers when the internal Package was converted to an external 14791 object (via the AcpiEvaluateObject interface.) 14792 14793 Fixed a problem with the namespace object deletion mechanism for 14794 objects created by control methods. There were two parts to this 14795 problem: 1) Objects created during the initialization phase method 14796 parse were not being deleted, and 2) The object owner ID mechanism 14797 to track objects was broken. 14798 14799 Fixed a problem where the use of the ASL Scope operator within a 14800 control method would result in an invalid opcode exception. 14801 14802 Fixed a problem introduced in the previous label where the buffer 14803 length required for the _PRT structure was not being returned 14804 correctly. 14805 14806 Code and Data Size: Current core subsystem library sizes are shown 14807 below. These are the code and data sizes for the acpica.lib 14808 produced by the Microsoft Visual C++ 6.0 compiler, and these 14809 values do not include any ACPI driver or OSPM code. The debug 14810 version of the code includes the debug output trace mechanism and 14811 has a larger code and data size. Note that these values will vary 14812 depending on the efficiency of the compiler and the compiler 14813 options used during generation. 14814 14815 Previous Release (11_20_01) 14816 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 14817 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 14818 14819 Current Release: 14820 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 14821 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 14822 14823 2) Linux: 14824 14825 Updated all files to apply cleanly against 2.4.16. 14826 14827 Added basic PCI Interrupt Routing Table (PRT) support for IA32 14828 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This 14829 version supports both static and dyanmic PRT entries, but dynamic 14830 entries are treated as if they were static (not yet 14831 reconfigurable). Architecture- specific code to use this data is 14832 absent on IA32 but should be available shortly. 14833 14834 Changed the initialization sequence to start the ACPI interpreter 14835 (acpi_init) prior to initialization of the PCI driver (pci_init) 14836 in init/main.c. This ordering is required to support PRT and 14837 facilitate other (future) enhancement. A side effect is that the 14838 ACPI bus driver and certain device drivers can no longer be loaded 14839 as modules. 14840 14841 Modified the 'make menuconfig' options to allow PCI Interrupt 14842 Routing support to be included without the ACPI Bus and other 14843 device drivers. 14844 14845 3) ASL Compiler, version X2033: 14846 14847 Fixed some issues with the use of the new CopyObject and 14848 DataTableRegion operators. Both are fully functional. 14849 14850 ---------------------------------------- 14851 Summary of changes for this label: 11_20_01 14852 14853 20 November 2001. Summary of changes for this release. 14854 14855 1) ACPI CA Core Subsystem: 14856 14857 Updated Index support to match ACPI 2.0 semantics. Storing a 14858 Integer, String, or Buffer to an Index of a Buffer will store only 14859 the least-significant byte of the source to the Indexed buffer 14860 byte. Multiple writes are not performed. 14861 14862 Fixed a problem where the access type used in an AccessAs ASL 14863 operator was not recorded correctly into the field object. 14864 14865 Fixed a problem where ASL Event objects were created in a 14866 signalled state. Events are now created in an unsignalled state. 14867 14868 The internal object cache is now purged after table loading and 14869 initialization to reduce the use of dynamic kernel memory -- on 14870 the assumption that object use is greatest during the parse phase 14871 of the entire table (versus the run-time use of individual control 14872 methods.) 14873 14874 ACPI 2.0 variable-length packages are now fully operational. 14875 14876 Code and Data Size: Code and Data optimizations have permitted new 14877 feature development with an actual reduction in the library size. 14878 Current core subsystem library sizes are shown below. These are 14879 the code and data sizes for the acpica.lib produced by the 14880 Microsoft Visual C++ 6.0 compiler, and these values do not include 14881 any ACPI driver or OSPM code. The debug version of the code 14882 includes the debug output trace mechanism and has a larger code 14883 and data size. Note that these values will vary depending on the 14884 efficiency of the compiler and the compiler options used during 14885 generation. 14886 14887 Previous Release (11_09_01): 14888 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 14889 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 14890 14891 Current Release: 14892 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 14893 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 14894 14895 2) Linux: 14896 14897 Enhanced the ACPI boot-time initialization code to allow the use 14898 of Local APIC tables for processor enumeration on IA-32, and to 14899 pave the way for a fully MPS-free boot (on SMP systems) in the 14900 near future. This functionality replaces 14901 arch/i386/kernel/acpitables.c, which was introduced in an earlier 14902 2.4.15-preX release. To enable this feature you must add 14903 "acpi_boot=on" to the kernel command line -- see the help entry 14904 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 14905 the works... 14906 14907 Restructured the configuration options to allow boot-time table 14908 parsing support without inclusion of the ACPI Interpreter (and 14909 other) code. 14910 14911 NOTE: This release does not include fixes for the reported events, 14912 power-down, and thermal passive cooling issues (coming soon). 14913 14914 3) ASL Compiler: 14915 14916 Added additional typechecking for Fields within restricted access 14917 Operation Regions. All fields within EC and CMOS regions must be 14918 declared with ByteAcc. All fields withing SMBus regions must be 14919 declared with the BufferAcc access type. 14920 14921 Fixed a problem where the listing file output of control methods 14922 no longer interleaved the actual AML code with the ASL source 14923 code. 14924 14925 14926 14927 14928 ---------------------------------------- 14929 Summary of changes for this label: 11_09_01 14930 14931 1) ACPI CA Core Subsystem: 14932 14933 Implemented ACPI 2.0-defined support for writes to fields with a 14934 Buffer, String, or Integer source operand that is smaller than the 14935 target field. In these cases, the source operand is zero-extended 14936 to fill the target field. 14937 14938 Fixed a problem where a Field starting bit offset (within the 14939 parent operation region) was calculated incorrectly if the 14940 14941 alignment of the field differed from the access width. This 14942 affected CreateWordField, CreateDwordField, CreateQwordField, and 14943 possibly other fields that use the "AccessAny" keyword. 14944 14945 Fixed a problem introduced in the 11_02_01 release where indirect 14946 stores through method arguments did not operate correctly. 14947 14948 2) Linux: 14949 14950 Implemented boot-time ACPI table parsing support 14951 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 14952 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 14953 legacy BIOS interfaces (e.g. MPS) for the configuration of system 14954 processors, memory, and interrupts during setup_arch(). Note that 14955 this patch does not include the required architecture-specific 14956 changes required to apply this information -- subsequent patches 14957 will be posted for both IA32 and IA64 to achieve this. 14958 14959 Added low-level sleep support for IA32 platforms, courtesy of Pat 14960 Mochel. This allows IA32 systems to transition to/from various 14961 sleeping states (e.g. S1, S3), although the lack of a centralized 14962 driver model and power-manageable drivers will prevent its 14963 (successful) use on most systems. 14964 14965 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 14966 submenu, unified IA32 and IA64 options, added new "Boot using ACPI 14967 tables" option, etc. 14968 14969 Increased the default timeout for the EC driver from 1ms to 10ms 14970 (1000 cycles of 10us) to try to address AE_TIME errors during EC 14971 transactions. 14972 14973 ---------------------------------------- 14974 Summary of changes for this label: 11_02_01 14975 14976 1) ACPI CA Core Subsystem: 14977 14978 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 14979 (QWordAcc keyword). All ACPI 2.0 64-bit support is now 14980 implemented. 14981 14982 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 14983 changes to support ACPI 2.0 Qword field access. Read/Write 14984 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 14985 accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 14986 the value parameter for the address space handler interface is now 14987 an ACPI_INTEGER. OSL implementations of these interfaces must now 14988 handle the case where the Width parameter is 64. 14989 14990 Index Fields: Fixed a problem where unaligned bit assembly and 14991 disassembly for IndexFields was not supported correctly. 14992 14993 Index and Bank Fields: Nested Index and Bank Fields are now 14994 supported. During field access, a check is performed to ensure 14995 that the value written to an Index or Bank register is not out of 14996 the range of the register. The Index (or Bank) register is 14997 written before each access to the field data. Future support will 14998 include allowing individual IndexFields to be wider than the 14999 DataRegister width. 15000 15001 Fields: Fixed a problem where the AML interpreter was incorrectly 15002 attempting to write beyond the end of a Field/OpRegion. This was 15003 a boundary case that occurred when a DWORD field was written to a 15004 BYTE access OpRegion, forcing multiple writes and causing the 15005 interpreter to write one datum too many. 15006 15007 Fields: Fixed a problem with Field/OpRegion access where the 15008 starting bit address of a field was incorrectly calculated if the 15009 current access type was wider than a byte (WordAcc, DwordAcc, or 15010 QwordAcc). 15011 15012 Fields: Fixed a problem where forward references to individual 15013 FieldUnits (individual Field names within a Field definition) were 15014 not resolved during the AML table load. 15015 15016 Fields: Fixed a problem where forward references from a Field 15017 definition to the parent Operation Region definition were not 15018 resolved during the AML table load. 15019 15020 Fields: Duplicate FieldUnit names within a scope are now detected 15021 during AML table load. 15022 15023 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 15024 returned an incorrect name for the root node. 15025 15026 Code and Data Size: Code and Data optimizations have permitted new 15027 feature development with an actual reduction in the library size. 15028 Current core subsystem library sizes are shown below. These are 15029 the code and data sizes for the acpica.lib produced by the 15030 Microsoft Visual C++ 6.0 compiler, and these values do not include 15031 any ACPI driver or OSPM code. The debug version of the code 15032 includes the debug output trace mechanism and has a larger code 15033 and data size. Note that these values will vary depending on the 15034 efficiency of the compiler and the compiler options used during 15035 generation. 15036 15037 Previous Release (10_18_01): 15038 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 15039 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 15040 15041 Current Release: 15042 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 15043 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 15044 15045 2) Linux: 15046 15047 Improved /proc processor output (Pavel Machek) Re-added 15048 MODULE_LICENSE("GPL") to all modules. 15049 15050 3) ASL Compiler version X2030: 15051 15052 Duplicate FieldUnit names within a scope are now detected and 15053 flagged as errors. 15054 15055 4) Documentation: 15056 15057 Programmer Reference updated to reflect OSL and address space 15058 handler interface changes described above. 15059 15060 ---------------------------------------- 15061 Summary of changes for this label: 10_18_01 15062 15063 ACPI CA Core Subsystem: 15064 15065 Fixed a problem with the internal object reference count mechanism 15066 that occasionally caused premature object deletion. This resolves 15067 all of the outstanding problem reports where an object is deleted 15068 in the middle of an interpreter evaluation. Although this problem 15069 only showed up in rather obscure cases, the solution to the 15070 problem involved an adjustment of all reference counts involving 15071 objects attached to namespace nodes. 15072 15073 Fixed a problem with Field support in the interpreter where 15074 writing to an aligned field whose length is an exact multiple (2 15075 or greater) of the field access granularity would cause an attempt 15076 to write beyond the end of the field. 15077 15078 The top level AML opcode execution functions within the 15079 interpreter have been renamed with a more meaningful and 15080 consistent naming convention. The modules exmonad.c and 15081 exdyadic.c were eliminated. New modules are exoparg1.c, 15082 exoparg2.c, exoparg3.c, and exoparg6.c. 15083 15084 Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 15085 15086 Fixed a problem where the AML debugger was causing some internal 15087 objects to not be deleted during subsystem termination. 15088 15089 Fixed a problem with the external AcpiEvaluateObject interface 15090 where the subsystem would fault if the named object to be 15091 evaluated refered to a constant such as Zero, Ones, etc. 15092 15093 Fixed a problem with IndexFields and BankFields where the 15094 subsystem would fault if the index, data, or bank registers were 15095 not defined in the same scope as the field itself. 15096 15097 Added printf format string checking for compilers that support 15098 this feature. Corrected more than 50 instances of issues with 15099 format specifiers within invocations of ACPI_DEBUG_PRINT 15100 throughout the core subsystem code. 15101 15102 The ASL "Revision" operator now returns the ACPI support level 15103 implemented in the core - the value "2" since the ACPI 2.0 support 15104 is more than 50% implemented. 15105 15106 Enhanced the output of the AML debugger "dump namespace" command 15107 to output in a more human-readable form. 15108 15109 Current core subsystem library code sizes are shown below. These 15110 15111 are the code and data sizes for the acpica.lib produced by the 15112 Microsoft Visual C++ 6.0 compiler, and these values do not include 15113 any ACPI driver or OSPM code. The debug version of the code 15114 includes the full debug trace mechanism -- leading to a much 15115 15116 larger code and data size. Note that these values will vary 15117 depending on the efficiency of the compiler and the compiler 15118 options used during generation. 15119 15120 Previous Label (09_20_01): 15121 Non-Debug Version: 65K Code, 5K Data, 70K Total 15122 Debug Version: 138K Code, 58K Data, 196K Total 15123 15124 This Label: 15125 15126 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 15127 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 15128 15129 Linux: 15130 15131 Implemented a "Bad BIOS Blacklist" to track machines that have 15132 known ASL/AML problems. 15133 15134 Enhanced the /proc interface for the thermal zone driver and added 15135 support for _HOT (the critical suspend trip point). The 'info' 15136 file now includes threshold/policy information, and allows setting 15137 of _SCP (cooling preference) and _TZP (polling frequency) values 15138 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 15139 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 15140 preference to the passive/quiet mode (if supported by the ASL). 15141 15142 Implemented a workaround for a gcc bug that resuted in an OOPs 15143 when loading the control method battery driver. 15144 15145 ---------------------------------------- 15146 Summary of changes for this label: 09_20_01 15147 15148 ACPI CA Core Subsystem: 15149 15150 The AcpiEnableEvent and AcpiDisableEvent interfaces have been 15151 modified to allow individual GPE levels to be flagged as wake- 15152 enabled (i.e., these GPEs are to remain enabled when the platform 15153 sleeps.) 15154 15155 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 15156 support wake-enabled GPEs. This means that upon entering the 15157 sleep state, all GPEs that are not wake-enabled are disabled. 15158 When leaving the sleep state, these GPEs are reenabled. 15159 15160 A local double-precision divide/modulo module has been added to 15161 enhance portability to OS kernels where a 64-bit math library is 15162 not available. The new module is "utmath.c". 15163 15164 Several optimizations have been made to reduce the use of CPU 15165 stack. Originally over 2K, the maximum stack usage is now below 15166 2K at 1860 bytes (1.82k) 15167 15168 Fixed a problem with the AcpiGetFirmwareTable interface where the 15169 root table pointer was not mapped into a logical address properly. 15170 15171 Fixed a problem where a NULL pointer was being dereferenced in the 15172 interpreter code for the ASL Notify operator. 15173 15174 Fixed a problem where the use of the ASL Revision operator 15175 returned an error. This operator now returns the current version 15176 of the ACPI CA core subsystem. 15177 15178 Fixed a problem where objects passed as control method parameters 15179 to AcpiEvaluateObject were always deleted at method termination. 15180 However, these objects may end up being stored into the namespace 15181 by the called method. The object reference count mechanism was 15182 applied to these objects instead of a force delete. 15183 15184 Fixed a problem where static strings or buffers (contained in the 15185 AML code) that are declared as package elements within the ASL 15186 code could cause a fault because the interpreter would attempt to 15187 delete them. These objects are now marked with the "static 15188 object" flag to prevent any attempt to delete them. 15189 15190 Implemented an interpreter optimization to use operands directly 15191 from the state object instead of extracting the operands to local 15192 variables. This reduces stack use and code size, and improves 15193 performance. 15194 15195 The module exxface.c was eliminated as it was an unnecessary extra 15196 layer of code. 15197 15198 Current core subsystem library code sizes are shown below. These 15199 are the code and data sizes for the acpica.lib produced by the 15200 Microsoft Visual C++ 6.0 compiler, and these values do not include 15201 any ACPI driver or OSPM code. The debug version of the code 15202 includes the full debug trace mechanism -- leading to a much 15203 larger code and data size. Note that these values will vary 15204 depending on the efficiency of the compiler and the compiler 15205 options used during generation. 15206 15207 Non-Debug Version: 65K Code, 5K Data, 70K Total 15208 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K 15209 Total (Previously 195K) 15210 15211 Linux: 15212 15213 Support for ACPI 2.0 64-bit integers has been added. All ACPI 15214 Integer objects are now 64 bits wide 15215 15216 All Acpi data types and structures are now in lower case. Only 15217 Acpi macros are upper case for differentiation. 15218 15219 Documentation: 15220 15221 Changes to the external interfaces as described above. 15222 15223 ---------------------------------------- 15224 Summary of changes for this label: 08_31_01 15225 15226 ACPI CA Core Subsystem: 15227 15228 A bug with interpreter implementation of the ASL Divide operator 15229 was found and fixed. The implicit function return value (not the 15230 explicit store operands) was returning the remainder instead of 15231 the quotient. This was a longstanding bug and it fixes several 15232 known outstanding issues on various platforms. 15233 15234 The ACPI_DEBUG_PRINT and function trace entry/exit macros have 15235 been further optimized for size. There are 700 invocations of the 15236 DEBUG_PRINT macro alone, so each optimization reduces the size of 15237 the debug version of the subsystem significantly. 15238 15239 A stack trace mechanism has been implemented. The maximum stack 15240 usage is about 2K on 32-bit platforms. The debugger command "stat 15241 stack" will display the current maximum stack usage. 15242 15243 All public symbols and global variables within the subsystem are 15244 now prefixed with the string "Acpi". This keeps all of the 15245 symbols grouped together in a kernel map, and avoids conflicts 15246 with other kernel subsystems. 15247 15248 Most of the internal fixed lookup tables have been moved into the 15249 code segment via the const operator. 15250 15251 Several enhancements have been made to the interpreter to both 15252 reduce the code size and improve performance. 15253 15254 Current core subsystem library code sizes are shown below. These 15255 are the code and data sizes for the acpica.lib produced by the 15256 Microsoft Visual C++ 6.0 compiler, and these values do not include 15257 any ACPI driver or OSPM code. The debug version of the code 15258 includes the full debug trace mechanism which contains over 700 15259 invocations of the DEBUG_PRINT macro, 500 function entry macro 15260 invocations, and over 900 function exit macro invocations -- 15261 leading to a much larger code and data size. Note that these 15262 values will vary depending on the efficiency of the compiler and 15263 the compiler options used during generation. 15264 15265 Non-Debug Version: 64K Code, 5K Data, 69K Total 15266 Debug Version: 137K Code, 58K Data, 195K Total 15267 15268 Linux: 15269 15270 Implemented wbinvd() macro, pending a kernel-wide definition. 15271 15272 Fixed /proc/acpi/event to handle poll() and short reads. 15273 15274 ASL Compiler, version X2026: 15275 15276 Fixed a problem introduced in the previous label where the AML 15277 15278 code emitted for package objects produced packages with zero 15279 length. 15280 15281 ---------------------------------------- 15282 Summary of changes for this label: 08_16_01 15283 15284 ACPI CA Core Subsystem: 15285 15286 The following ACPI 2.0 ASL operators have been implemented in the 15287 AML interpreter (These are already supported by the Intel ASL 15288 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 15289 ToBuffer. Support for 64-bit AML constants is implemented in the 15290 AML parser, debugger, and disassembler. 15291 15292 The internal memory tracking mechanism (leak detection code) has 15293 been upgraded to reduce the memory overhead (a separate tracking 15294 block is no longer allocated for each memory allocation), and now 15295 supports all of the internal object caches. 15296 15297 The data structures and code for the internal object caches have 15298 been coelesced and optimized so that there is a single cache and 15299 memory list data structure and a single group of functions that 15300 implement generic cache management. This has reduced the code 15301 size in both the debug and release versions of the subsystem. 15302 15303 The DEBUG_PRINT macro(s) have been optimized for size and replaced 15304 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 15305 different, because it generates a single call to an internal 15306 function. This results in a savings of about 90 bytes per 15307 invocation, resulting in an overall code and data savings of about 15308 16% in the debug version of the subsystem. 15309 15310 Linux: 15311 15312 Fixed C3 disk corruption problems and re-enabled C3 on supporting 15313 machines. 15314 15315 Integrated low-level sleep code by Patrick Mochel. 15316 15317 Further tweaked source code Linuxization. 15318 15319 Other minor fixes. 15320 15321 ASL Compiler: 15322 15323 Support for ACPI 2.0 variable length packages is fixed/completed. 15324 15325 Fixed a problem where the optional length parameter for the ACPI 15326 2.0 ToString operator. 15327 15328 Fixed multiple extraneous error messages when a syntax error is 15329 detected within the declaration line of a control method. 15330 15331 ---------------------------------------- 15332 Summary of changes for this label: 07_17_01 15333 15334 ACPI CA Core Subsystem: 15335 15336 Added a new interface named AcpiGetFirmwareTable to obtain any 15337 ACPI table via the ACPI signature. The interface can be called at 15338 any time during kernel initialization, even before the kernel 15339 virtual memory manager is initialized and paging is enabled. This 15340 allows kernel subsystems to obtain ACPI tables very early, even 15341 before the ACPI CA subsystem is initialized. 15342 15343 Fixed a problem where Fields defined with the AnyAcc attribute 15344 could be resolved to the incorrect address under the following 15345 conditions: 1) the field width is larger than 8 bits and 2) the 15346 parent operation region is not defined on a DWORD boundary. 15347 15348 Fixed a problem where the interpreter is not being locked during 15349 namespace initialization (during execution of the _INI control 15350 methods), causing an error when an attempt is made to release it 15351 later. 15352 15353 ACPI 2.0 support in the AML Interpreter has begun and will be 15354 ongoing throughout the rest of this year. In this label, The Mod 15355 operator is implemented. 15356 15357 Added a new data type to contain full PCI addresses named 15358 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 15359 and Function values. 15360 15361 Linux: 15362 15363 Enhanced the Linux version of the source code to change most 15364 capitalized ACPI type names to lowercase. For example, all 15365 instances of ACPI_STATUS are changed to acpi_status. This will 15366 result in a large diff, but the change is strictly cosmetic and 15367 aligns the CA code closer to the Linux coding standard. 15368 15369 OSL Interfaces: 15370 15371 The interfaces to the PCI configuration space have been changed to 15372 add the PCI Segment number and to split the single 32-bit combined 15373 DeviceFunction field into two 16-bit fields. This was 15374 accomplished by moving the four values that define an address in 15375 PCI configuration space (segment, bus, device, and function) to 15376 the new ACPI_PCI_ID structure. 15377 15378 The changes to the PCI configuration space interfaces led to a 15379 reexamination of the complete set of address space access 15380 interfaces for PCI, I/O, and Memory. The previously existing 18 15381 interfaces have proven difficult to maintain (any small change 15382 must be propagated across at least 6 interfaces) and do not easily 15383 allow for future expansion to 64 bits if necessary. Also, on some 15384 systems, it would not be appropriate to demultiplex the access 15385 width (8, 16, 32,or 64) before calling the OSL if the 15386 corresponding native OS interfaces contain a similar access width 15387 parameter. For these reasons, the 18 address space interfaces 15388 have been replaced by these 6 new ones: 15389 15390 AcpiOsReadPciConfiguration 15391 AcpiOsWritePciConfiguration 15392 AcpiOsReadMemory 15393 AcpiOsWriteMemory 15394 AcpiOsReadPort 15395 AcpiOsWritePort 15396 15397 Added a new interface named AcpiOsGetRootPointer to allow the OSL 15398 to perform the platform and/or OS-specific actions necessary to 15399 obtain the ACPI RSDP table pointer. On IA-32 platforms, this 15400 interface will simply call down to the CA core to perform the low- 15401 memory search for the table. On IA-64, the RSDP is obtained from 15402 EFI. Migrating this interface to the OSL allows the CA core to 15403 15404 remain OS and platform independent. 15405 15406 Added a new interface named AcpiOsSignal to provide a generic 15407 "function code and pointer" interface for various miscellaneous 15408 signals and notifications that must be made to the host OS. The 15409 first such signals are intended to support the ASL Fatal and 15410 Breakpoint operators. In the latter case, the AcpiOsBreakpoint 15411 interface has been obsoleted. 15412 15413 The definition of the AcpiFormatException interface has been 15414 changed to simplify its use. The caller no longer must supply a 15415 buffer to the call; A pointer to a const string is now returned 15416 directly. This allows the call to be easily used in printf 15417 statements, etc. since the caller does not have to manage a local 15418 buffer. 15419 15420 15421 ASL Compiler, Version X2025: 15422 15423 The ACPI 2.0 Switch/Case/Default operators have been implemented 15424 and are fully functional. They will work with all ACPI 1.0 15425 interpreters, since the operators are simply translated to If/Else 15426 pairs. 15427 15428 The ACPI 2.0 ElseIf operator is implemented and will also work 15429 with 1.0 interpreters, for the same reason. 15430 15431 Implemented support for ACPI 2.0 variable-length packages. These 15432 packages have a separate opcode, and their size is determined by 15433 the interpreter at run-time. 15434 15435 Documentation The ACPI CA Programmer Reference has been updated to 15436 reflect the new interfaces and changes to existing interfaces. 15437 15438 ------------------------------------------ 15439 Summary of changes for this label: 06_15_01 15440 15441 ACPI CA Core Subsystem: 15442 15443 Fixed a problem where a DWORD-accessed field within a Buffer 15444 object would get its byte address inadvertently rounded down to 15445 the nearest DWORD. Buffers are always Byte-accessible. 15446 15447 ASL Compiler, version X2024: 15448 15449 Fixed a problem where the Switch() operator would either fault or 15450 hang the compiler. Note however, that the AML code for this ACPI 15451 2.0 operator is not yet implemented. 15452 15453 Compiler uses the new AcpiOsGetTimer interface to obtain compile 15454 timings. 15455 15456 Implementation of the CreateField operator automatically converts 15457 a reference to a named field within a resource descriptor from a 15458 byte offset to a bit offset if required. 15459 15460 Added some missing named fields from the resource descriptor 15461 support. These are the names that are automatically created by the 15462 compiler to reference fields within a descriptor. They are only 15463 valid at compile time and are not passed through to the AML 15464 interpreter. 15465 15466 Resource descriptor named fields are now typed as Integers and 15467 subject to compile-time typechecking when used in expressions. 15468 15469 ------------------------------------------ 15470 Summary of changes for this label: 05_18_01 15471 15472 ACPI CA Core Subsystem: 15473 15474 Fixed a couple of problems in the Field support code where bits 15475 from adjacent fields could be returned along with the proper field 15476 bits. Restructured the field support code to improve performance, 15477 readability and maintainability. 15478 15479 New DEBUG_PRINTP macro automatically inserts the procedure name 15480 into the output, saving hundreds of copies of procedure name 15481 strings within the source, shrinking the memory footprint of the 15482 debug version of the core subsystem. 15483 15484 Source Code Structure: 15485 15486 The source code directory tree was restructured to reflect the 15487 current organization of the component architecture. Some files 15488 and directories have been moved and/or renamed. 15489 15490 Linux: 15491 15492 Fixed leaking kacpidpc processes. 15493 15494 Fixed queueing event data even when /proc/acpi/event is not 15495 opened. 15496 15497 ASL Compiler, version X2020: 15498 15499 Memory allocation performance enhancement - over 24X compile time 15500 improvement on large ASL files. Parse nodes and namestring 15501 buffers are now allocated from a large internal compiler buffer. 15502 15503 The temporary .SRC file is deleted unless the "-s" option is 15504 specified 15505 15506 The "-d" debug output option now sends all output to the .DBG file 15507 instead of the console. 15508 15509 "External" second parameter is now optional 15510 15511 "ElseIf" syntax now properly allows the predicate 15512 15513 Last operand to "Load" now recognized as a Target operand 15514 15515 Debug object can now be used anywhere as a normal object. 15516 15517 ResourceTemplate now returns an object of type BUFFER 15518 15519 EISAID now returns an object of type INTEGER 15520 15521 "Index" now works with a STRING operand 15522 15523 "LoadTable" now accepts optional parameters 15524 15525 "ToString" length parameter is now optional 15526 15527 "Interrupt (ResourceType," parse error fixed. 15528 15529 "Register" with a user-defined region space parse error fixed 15530 15531 Escaped backslash at the end of a string ("\\") scan/parse error 15532 fixed 15533 15534 "Revision" is now an object of type INTEGER. 15535 15536 15537 15538 ------------------------------------------ 15539 Summary of changes for this label: 05_02_01 15540 15541 Linux: 15542 15543 /proc/acpi/event now blocks properly. 15544 15545 Removed /proc/sys/acpi. You can still dump your DSDT from 15546 /proc/acpi/dsdt. 15547 15548 ACPI CA Core Subsystem: 15549 15550 Fixed a problem introduced in the previous label where some of the 15551 "small" resource descriptor types were not recognized. 15552 15553 Improved error messages for the case where an ASL Field is outside 15554 the range of the parent operation region. 15555 15556 ASL Compiler, version X2018: 15557 15558 15559 Added error detection for ASL Fields that extend beyond the length 15560 of the parent operation region (only if the length of the region 15561 is known at compile time.) This includes fields that have a 15562 minimum access width that is smaller than the parent region, and 15563 individual field units that are partially or entirely beyond the 15564 extent of the parent. 15565 15566 15567 15568 ------------------------------------------ 15569 Summary of changes for this label: 04_27_01 15570 15571 ACPI CA Core Subsystem: 15572 15573 Fixed a problem where the namespace mutex could be released at the 15574 wrong time during execution of AcpiRemoveAddressSpaceHandler. 15575 15576 Added optional thread ID output for debug traces, to simplify 15577 debugging of multiple threads. Added context switch notification 15578 when the debug code realizes that a different thread is now 15579 executing ACPI code. 15580 15581 Some additional external data types have been prefixed with the 15582 string "ACPI_" for consistency. This may effect existing code. 15583 The data types affected are the external callback typedefs - e.g., 15584 15585 WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 15586 15587 Linux: 15588 15589 Fixed an issue with the OSL semaphore implementation where a 15590 thread was waking up with an error from receiving a SIGCHLD 15591 signal. 15592 15593 Linux version of ACPI CA now uses the system C library for string 15594 manipulation routines instead of a local implementation. 15595 15596 Cleaned up comments and removed TBDs. 15597 15598 ASL Compiler, version X2017: 15599 15600 Enhanced error detection and reporting for all file I/O 15601 operations. 15602 15603 Documentation: 15604 15605 Programmer Reference updated to version 1.06. 15606 15607 15608 15609 ------------------------------------------ 15610 Summary of changes for this label: 04_13_01 15611 15612 ACPI CA Core Subsystem: 15613 15614 Restructured support for BufferFields and RegionFields. 15615 BankFields support is now fully operational. All known 32-bit 15616 limitations on field sizes have been removed. Both BufferFields 15617 and (Operation) RegionFields are now supported by the same field 15618 management code. 15619 15620 Resource support now supports QWORD address and IO resources. The 15621 16/32/64 bit address structures and the Extended IRQ structure 15622 have been changed to properly handle Source Resource strings. 15623 15624 A ThreadId of -1 is now used to indicate a "mutex not acquired" 15625 condition internally and must never be returned by AcpiOsThreadId. 15626 This reserved value was changed from 0 since Unix systems allow a 15627 thread ID of 0. 15628 15629 Linux: 15630 15631 Driver code reorganized to enhance portability 15632 15633 Added a kernel configuration option to control ACPI_DEBUG 15634 15635 Fixed the EC driver to honor _GLK. 15636 15637 ASL Compiler, version X2016: 15638 15639 Fixed support for the "FixedHw" keyword. Previously, the FixedHw 15640 address space was set to 0, not 0x7f as it should be. 15641 15642 ------------------------------------------ 15643 Summary of changes for this label: 03_13_01 15644 15645 ACPI CA Core Subsystem: 15646 15647 During ACPI initialization, the _SB_._INI method is now run if 15648 present. 15649 15650 Notify handler fix - notifies are deferred until the parent method 15651 completes execution. This fixes the "mutex already acquired" 15652 issue seen occasionally. 15653 15654 Part of the "implicit conversion" rules in ACPI 2.0 have been 15655 found to cause compatibility problems with existing ASL/AML. The 15656 convert "result-to-target-type" implementation has been removed 15657 for stores to method Args and Locals. Source operand conversion 15658 is still fully implemented. Possible changes to ACPI 2.0 15659 specification pending. 15660 15661 Fix to AcpiRsCalculatePciRoutingTableLength to return correct 15662 length. 15663 15664 Fix for compiler warnings for 64-bit compiles. 15665 15666 Linux: 15667 15668 /proc output aligned for easier parsing. 15669 15670 Release-version compile problem fixed. 15671 15672 New kernel configuration options documented in Configure.help. 15673 15674 IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 15675 context" message. 15676 15677 OSPM: 15678 15679 Power resource driver integrated with bus manager. 15680 15681 Fixed kernel fault during active cooling for thermal zones. 15682 15683 Source Code: 15684 15685 The source code tree has been restructured. 15686 15687 15688 15689 ------------------------------------------ 15690 Summary of changes for this label: 03_02_01 15691 15692 Linux OS Services Layer (OSL): 15693 15694 Major revision of all Linux-specific code. 15695 15696 Modularized all ACPI-specific drivers. 15697 15698 Added new thermal zone and power resource drivers. 15699 15700 Revamped /proc interface (new functionality is under /proc/acpi). 15701 15702 New kernel configuration options. 15703 15704 Linux known issues: 15705 15706 New kernel configuration options not documented in Configure.help 15707 yet. 15708 15709 15710 Module dependencies not currently implemented. If used, they 15711 should be loaded in this order: busmgr, power, ec, system, 15712 processor, battery, ac_adapter, button, thermal. 15713 15714 Modules will not load if CONFIG_MODVERSION is set. 15715 15716 IBM 600E - entering S5 may reboot instead of shutting down. 15717 15718 IBM 600E - Sleep button may generate "Invalid <NULL> context" 15719 message. 15720 15721 Some systems may fail with "execution mutex already acquired" 15722 message. 15723 15724 ACPI CA Core Subsystem: 15725 15726 Added a new OSL Interface, AcpiOsGetThreadId. This was required 15727 for the deadlock detection code. Defined to return a non-zero, 32- 15728 bit thread ID for the currently executing thread. May be a non- 15729 zero constant integer on single-thread systems. 15730 15731 Implemented deadlock detection for internal subsystem mutexes. We 15732 may add conditional compilation for this code (debug only) later. 15733 15734 ASL/AML Mutex object semantics are now fully supported. This 15735 includes multiple acquires/releases by owner and support for the 15736 15737 Mutex SyncLevel parameter. 15738 15739 A new "Force Release" mechanism automatically frees all ASL 15740 Mutexes that have been acquired but not released when a thread 15741 exits the interpreter. This forces conformance to the ACPI spec 15742 ("All mutexes must be released when an invocation exits") and 15743 prevents deadlocked ASL threads. This mechanism can be expanded 15744 (later) to monitor other resource acquisitions if OEM ASL code 15745 continues to misbehave (which it will). 15746 15747 Several new ACPI exception codes have been added for the Mutex 15748 support. 15749 15750 Recursive method calls are now allowed and supported (the ACPI 15751 spec does in fact allow recursive method calls.) The number of 15752 recursive calls is subject to the restrictions imposed by the 15753 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 15754 parameter. 15755 15756 Implemented support for the SyncLevel parameter for control 15757 methods (ACPI 2.0 feature) 15758 15759 Fixed a deadlock problem when multiple threads attempted to use 15760 the interpreter. 15761 15762 Fixed a problem where the string length of a String package 15763 element was not always set in a package returned from 15764 AcpiEvaluateObject. 15765 15766 Fixed a problem where the length of a String package element was 15767 not always included in the length of the overall package returned 15768 from AcpiEvaluateObject. 15769 15770 Added external interfaces (Acpi*) to the ACPI debug memory 15771 manager. This manager keeps a list of all outstanding 15772 allocations, and can therefore detect memory leaks and attempts to 15773 free memory blocks more than once. Useful for code such as the 15774 power manager, etc. May not be appropriate for device drivers. 15775 Performance with the debug code enabled is slow. 15776 15777 The ACPI Global Lock is now an optional hardware element. 15778 15779 ASL Compiler Version X2015: 15780 15781 Integrated changes to allow the compiler to be generated on 15782 multiple platforms. 15783 15784 Linux makefile added to generate the compiler on Linux 15785 15786 Source Code: 15787 15788 All platform-specific headers have been moved to their own 15789 subdirectory, Include/Platform. 15790 15791 New source file added, Interpreter/ammutex.c 15792 15793 New header file, Include/acstruct.h 15794 15795 Documentation: 15796 15797 The programmer reference has been updated for the following new 15798 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 15799 15800 ------------------------------------------ 15801 Summary of changes for this label: 02_08_01 15802 15803 Core ACPI CA Subsystem: Fixed a problem where an error was 15804 incorrectly returned if the return resource buffer was larger than 15805 the actual data (in the resource interfaces). 15806 15807 References to named objects within packages are resolved to the 15808 15809 full pathname string before packages are returned directly (via 15810 the AcpiEvaluateObject interface) or indirectly via the resource 15811 interfaces. 15812 15813 Linux OS Services Layer (OSL): 15814 15815 Improved /proc battery interface. 15816 15817 15818 Added C-state debugging output and other miscellaneous fixes. 15819 15820 ASL Compiler Version X2014: 15821 15822 All defined method arguments can now be used as local variables, 15823 including the ones that are not actually passed in as parameters. 15824 The compiler tracks initialization of the arguments and issues an 15825 exception if they are used without prior assignment (just like 15826 locals). 15827 15828 The -o option now specifies a filename prefix that is used for all 15829 output files, including the AML output file. Otherwise, the 15830 default behavior is as follows: 1) the AML goes to the file 15831 specified in the DSDT. 2) all other output files use the input 15832 source filename as the base. 15833 15834 ------------------------------------------ 15835 Summary of changes for this label: 01_25_01 15836 15837 Core ACPI CA Subsystem: Restructured the implementation of object 15838 store support within the interpreter. This includes support for 15839 the Store operator as well as any ASL operators that include a 15840 target operand. 15841 15842 Partially implemented support for Implicit Result-to-Target 15843 conversion. This is when a result object is converted on the fly 15844 to the type of an existing target object. Completion of this 15845 support is pending further analysis of the ACPI specification 15846 concerning this matter. 15847 15848 CPU-specific code has been removed from the subsystem (hardware 15849 directory). 15850 15851 New Power Management Timer functions added 15852 15853 Linux OS Services Layer (OSL): Moved system state transition code 15854 to the core, fixed it, and modified Linux OSL accordingly. 15855 15856 Fixed C2 and C3 latency calculations. 15857 15858 15859 We no longer use the compilation date for the version message on 15860 initialization, but retrieve the version from AcpiGetSystemInfo(). 15861 15862 Incorporated for fix Sony VAIO machines. 15863 15864 Documentation: The Programmer Reference has been updated and 15865 reformatted. 15866 15867 15868 ASL Compiler: Version X2013: Fixed a problem where the line 15869 numbering and error reporting could get out of sync in the 15870 presence of multiple include files. 15871 15872 ------------------------------------------ 15873 Summary of changes for this label: 01_15_01 15874 15875 Core ACPI CA Subsystem: 15876 15877 Implemented support for type conversions in the execution of the 15878 ASL Concatenate operator (The second operand is converted to 15879 match the type of the first operand before concatenation.) 15880 15881 Support for implicit source operand conversion is partially 15882 implemented. The ASL source operand types Integer, Buffer, and 15883 String are freely interchangeable for most ASL operators and are 15884 converted by the interpreter on the fly as required. Implicit 15885 Target operand conversion (where the result is converted to the 15886 target type before storing) is not yet implemented. 15887 15888 Support for 32-bit and 64-bit BCD integers is implemented. 15889 15890 Problem fixed where a field read on an aligned field could cause a 15891 read past the end of the field. 15892 15893 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 15894 does not return a value, but the caller expects one. (The ASL 15895 compiler flags this as a warning.) 15896 15897 ASL Compiler: 15898 15899 Version X2011: 15900 1. Static typechecking of all operands is implemented. This 15901 prevents the use of invalid objects (such as using a Package where 15902 an Integer is required) at compile time instead of at interpreter 15903 run-time. 15904 2. The ASL source line is printed with ALL errors and warnings. 15905 3. Bug fix for source EOF without final linefeed. 15906 4. Debug option is split into a parse trace and a namespace trace. 15907 5. Namespace output option (-n) includes initial values for 15908 integers and strings. 15909 6. Parse-only option added for quick syntax checking. 15910 7. Compiler checks for duplicate ACPI name declarations 15911 15912 Version X2012: 15913 1. Relaxed typechecking to allow interchangeability between 15914 strings, integers, and buffers. These types are now converted by 15915 the interpreter at runtime. 15916 2. Compiler reports time taken by each internal subsystem in the 15917 debug output file. 15918 15919 15920 ------------------------------------------ 15921 Summary of changes for this label: 12_14_00 15922 15923 ASL Compiler: 15924 15925 This is the first official release of the compiler. Since the 15926 compiler requires elements of the Core Subsystem, this label 15927 synchronizes everything. 15928 15929 ------------------------------------------ 15930 Summary of changes for this label: 12_08_00 15931 15932 15933 Fixed a problem where named references within the ASL definition 15934 of both OperationRegions and CreateXXXFields did not work 15935 properly. The symptom was an AE_AML_OPERAND_TYPE during 15936 initialization of the region/field. This is similar (but not 15937 related internally) to the problem that was fixed in the last 15938 label. 15939 15940 Implemented both 32-bit and 64-bit support for the BCD ASL 15941 functions ToBCD and FromBCD. 15942 15943 Updated all legal headers to include "2000" in the copyright 15944 years. 15945 15946 ------------------------------------------ 15947 Summary of changes for this label: 12_01_00 15948 15949 Fixed a problem where method invocations within the ASL definition 15950 of both OperationRegions and CreateXXXFields did not work 15951 properly. The symptom was an AE_AML_OPERAND_TYPE during 15952 initialization of the region/field: 15953 15954 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 15955 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 15956 (0x3005) 15957 15958 Fixed a problem where operators with more than one nested 15959 subexpression would fail. The symptoms were varied, by mostly 15960 AE_AML_OPERAND_TYPE errors. This was actually a rather serious 15961 problem that has gone unnoticed until now. 15962 15963 Subtract (Add (1,2), Multiply (3,4)) 15964 15965 Fixed a problem where AcpiGetHandle didn't quite get fixed in the 15966 previous build (The prefix part of a relative path was handled 15967 incorrectly). 15968 15969 Fixed a problem where Operation Region initialization failed if 15970 the operation region name was a "namepath" instead of a simple 15971 "nameseg". Symptom was an AE_NO_OPERAND error. 15972 15973 Fixed a problem where an assignment to a local variable via the 15974 indirect RefOf mechanism only worked for the first such 15975 assignment. Subsequent assignments were ignored. 15976 15977 ------------------------------------------ 15978 Summary of changes for this label: 11_15_00 15979 15980 ACPI 2.0 table support with backwards support for ACPI 1.0 and the 15981 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 15982 the AML interpreter does NOT have support for the new 2.0 ASL 15983 grammar terms at this time. 15984 15985 All ACPI hardware access is via the GAS structures in the ACPI 2.0 15986 FADT. 15987 15988 All physical memory addresses across all platforms are now 64 bits 15989 wide. Logical address width remains dependent on the platform 15990 (i.e., "void *"). 15991 15992 AcpiOsMapMemory interface changed to a 64-bit physical address. 15993 15994 The AML interpreter integer size is now 64 bits, as per the ACPI 15995 2.0 specification. 15996 15997 For backwards compatibility with ACPI 1.0, ACPI tables with a 15998 revision number less than 2 use 32-bit integers only. 15999 16000 Fixed a problem where the evaluation of OpRegion operands did not 16001 always resolve them to numbers properly. 16002 16003 ------------------------------------------ 16004 Summary of changes for this label: 10_20_00 16005 16006 Fix for CBN_._STA issue. This fix will allow correct access to 16007 CBN_ OpRegions when the _STA returns 0x8. 16008 16009 Support to convert ACPI constants (Ones, Zeros, One) to actual 16010 values before a package object is returned 16011 16012 Fix for method call as predicate to if/while construct causing 16013 incorrect if/while behavior 16014 16015 Fix for Else block package lengths sometimes calculated wrong (if 16016 block > 63 bytes) 16017 16018 Fix for Processor object length field, was always zero 16019 16020 Table load abort if FACP sanity check fails 16021 16022 Fix for problem with Scope(name) if name already exists 16023 16024 Warning emitted if a named object referenced cannot be found 16025 (resolved) during method execution. 16026 16027 16028 16029 16030 16031 ------------------------------------------ 16032 Summary of changes for this label: 9_29_00 16033 16034 New table initialization interfaces: AcpiInitializeSubsystem no 16035 longer has any parameters AcpiFindRootPointer - Find the RSDP (if 16036 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 16037 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 16038 AcpiLoadTables 16039 16040 Note: These interface changes require changes to all existing OSDs 16041 16042 The PCI_Config default address space handler is always installed 16043 at the root namespace object. 16044 16045 ------------------------------------------- 16046 Summary of changes for this label: 09_15_00 16047 16048 The new initialization architecture is implemented. New 16049 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 16050 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 16051 16052 (Namespace is automatically loaded when a table is loaded) 16053 16054 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 16055 52 bytes to 32 bytes. There is usually one of these for every 16056 namespace object, so the memory savings is significant. 16057 16058 Implemented just-in-time evaluation of the CreateField operators. 16059 16060 Bug fixes for IA-64 support have been integrated. 16061 16062 Additional code review comments have been implemented 16063 16064 The so-called "third pass parse" has been replaced by a final walk 16065 through the namespace to initialize all operation regions (address 16066 spaces) and fields that have not yet been initialized during the 16067 execution of the various _INI and REG methods. 16068 16069 New file - namespace/nsinit.c 16070 16071 ------------------------------------------- 16072 Summary of changes for this label: 09_01_00 16073 16074 Namespace manager data structures have been reworked to change the 16075 primary object from a table to a single object. This has 16076 resulted in dynamic memory savings of 3X within the namespace and 16077 2X overall in the ACPI CA subsystem. 16078 16079 Fixed problem where the call to AcpiEvFindPciRootBuses was 16080 inadvertently left commented out. 16081 16082 Reduced the warning count when generating the source with the GCC 16083 compiler. 16084 16085 Revision numbers added to each module header showing the 16086 SourceSafe version of the file. Please refer to this version 16087 number when giving us feedback or comments on individual modules. 16088 16089 The main object types within the subsystem have been renamed to 16090 clarify their purpose: 16091 16092 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 16093 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 16094 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 16095 16096 NOTE: no changes to the initialization sequence are included in 16097 this label. 16098 16099 ------------------------------------------- 16100 Summary of changes for this label: 08_23_00 16101 16102 Fixed problem where TerminateControlMethod was being called 16103 multiple times per method 16104 16105 Fixed debugger problem where single stepping caused a semaphore to 16106 be oversignalled 16107 16108 Improved performance through additional parse object caching - 16109 added ACPI_EXTENDED_OP type 16110 16111 ------------------------------------------- 16112 Summary of changes for this label: 08_10_00 16113 16114 Parser/Interpreter integration: Eliminated the creation of 16115 complete parse trees for ACPI tables and control methods. 16116 Instead, parse subtrees are created and then deleted as soon as 16117 they are processed (Either entered into the namespace or executed 16118 by the interpreter). This reduces the use of dynamic kernel 16119 memory significantly. (about 10X) 16120 16121 Exception codes broken into classes and renumbered. Be sure to 16122 recompile all code that includes acexcep.h. Hopefully we won't 16123 have to renumber the codes again now that they are split into 16124 classes (environment, programmer, AML code, ACPI table, and 16125 internal). 16126 16127 Fixed some additional alignment issues in the Resource Manager 16128 subcomponent 16129 16130 Implemented semaphore tracking in the AcpiExec utility, and fixed 16131 several places where mutexes/semaphores were being unlocked 16132 without a corresponding lock operation. There are no known 16133 semaphore or mutex "leaks" at this time. 16134 16135 Fixed the case where an ASL Return operator is used to return an 16136 unnamed package. 16137 16138 ------------------------------------------- 16139 Summary of changes for this label: 07_28_00 16140 16141 Fixed a problem with the way addresses were calculated in 16142 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 16143 manifested itself when a Field was created with WordAccess or 16144 DwordAccess, but the field unit defined within the Field was less 16145 16146 than a Word or Dword. 16147 16148 Fixed a problem in AmlDumpOperands() module's loop to pull 16149 operands off of the operand stack to display information. The 16150 problem manifested itself as a TLB error on 64-bit systems when 16151 accessing an operand stack with two or more operands. 16152 16153 Fixed a problem with the PCI configuration space handlers where 16154 context was getting confused between accesses. This required a 16155 change to the generic address space handler and address space 16156 setup definitions. Handlers now get both a global handler context 16157 (this is the one passed in by the user when executing 16158 AcpiInstallAddressSpaceHandler() and a specific region context 16159 that is unique to each region (For example, the _ADR, _SEG and 16160 _BBN values associated with a specific region). The generic 16161 function definitions have changed to the following: 16162 16163 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 16164 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 16165 *HandlerContext, // This used to be void *Context void 16166 *RegionContext); // This is an additional parameter 16167 16168 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 16169 RegionHandle, UINT32 Function, void *HandlerContext, void 16170 **RegionContext); // This used to be **ReturnContext 16171 16172 ------------------------------------------- 16173 Summary of changes for this label: 07_21_00 16174 16175 Major file consolidation and rename. All files within the 16176 interpreter have been renamed as well as most header files. This 16177 was done to prevent collisions with existing files in the host 16178 OSs -- filenames such as "config.h" and "global.h" seem to be 16179 quite common. The VC project files have been updated. All 16180 makefiles will require modification. 16181 16182 The parser/interpreter integration continues in Phase 5 with the 16183 implementation of a complete 2-pass parse (the AML is parsed 16184 twice) for each table; This avoids the construction of a huge 16185 parse tree and therefore reduces the amount of dynamic memory 16186 required by the subsystem. Greater use of the parse object cache 16187 means that performance is unaffected. 16188 16189 Many comments from the two code reviews have been rolled in. 16190 16191 The 64-bit alignment support is complete. 16192 16193 ------------------------------------------- 16194 Summary of changes for this label: 06_30_00 16195 16196 With a nod and a tip of the hat to the technology of yesteryear, 16197 we've added support in the source code for 80 column output 16198 devices. The code is now mostly constrained to 80 columns or 16199 less to support environments and editors that 1) cannot display 16200 or print more than 80 characters on a single line, and 2) cannot 16201 disable line wrapping. 16202 16203 A major restructuring of the namespace data structure has been 16204 completed. The result is 1) cleaner and more 16205 understandable/maintainable code, and 2) a significant reduction 16206 in the dynamic memory requirement for each named ACPI object 16207 (almost half). 16208 16209 ------------------------------------------- 16210 Summary of changes for this label: 06_23_00 16211 16212 Linux support has been added. In order to obtain approval to get 16213 the ACPI CA subsystem into the Linux kernel, we've had to make 16214 quite a few changes to the base subsystem that will affect all 16215 users (all the changes are generic and OS- independent). The 16216 effects of these global changes have been somewhat far reaching. 16217 Files have been merged and/or renamed and interfaces have been 16218 renamed. The major changes are described below. 16219 16220 Osd* interfaces renamed to AcpiOs* to eliminate namespace 16221 pollution/confusion within our target kernels. All OSD 16222 interfaces must be modified to match the new naming convention. 16223 16224 Files merged across the subsystem. A number of the smaller source 16225 and header files have been merged to reduce the file count and 16226 increase the density of the existing files. There are too many 16227 to list here. In general, makefiles that call out individual 16228 files will require rebuilding. 16229 16230 Interpreter files renamed. All interpreter files now have the 16231 prefix am* instead of ie* and is*. 16232 16233 Header files renamed: The acapi.h file is now acpixf.h. The 16234 acpiosd.h file is now acpiosxf.h. We are removing references to 16235 the acronym "API" since it is somewhat windowsy. The new name is 16236 "external interface" or xface or xf in the filenames.j 16237 16238 16239 All manifest constants have been forced to upper case (some were 16240 mixed case.) Also, the string "ACPI_" has been prepended to many 16241 (not all) of the constants, typedefs, and structs. 16242 16243 The globals "DebugLevel" and "DebugLayer" have been renamed 16244 "AcpiDbgLevel" and "AcpiDbgLayer" respectively. 16245 16246 All other globals within the subsystem are now prefixed with 16247 "AcpiGbl_" Internal procedures within the subsystem are now 16248 prefixed with "Acpi" (with only a few exceptions). The original 16249 two-letter abbreviation for the subcomponent remains after "Acpi" 16250 - for example, CmCallocate became AcpiCmCallocate. 16251 16252 Added a source code translation/conversion utility. Used to 16253 generate the Linux source code, it can be modified to generate 16254 other types of source as well. Can also be used to cleanup 16255 existing source by removing extraneous spaces and blank lines. 16256 Found in tools/acpisrc/* 16257 16258 OsdUnMapMemory was renamed to OsdUnmapMemory and then 16259 AcpiOsUnmapMemory. (UnMap became Unmap). 16260 16261 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 16262 When set to one, this indicates that the caller wants to use the 16263 16264 semaphore as a mutex, not a counting semaphore. ACPI CA uses 16265 both types. However, implementers of this call may want to use 16266 different OS primitives depending on the type of semaphore 16267 requested. For example, some operating systems provide separate 16268 16269 "mutex" and "semaphore" interfaces - where the mutex interface is 16270 much faster because it doesn't have all the overhead of a full 16271 semaphore implementation. 16272 16273 Fixed a deadlock problem where a method that accesses the PCI 16274 address space can block forever if it is the first access to the 16275 space. 16276 16277 ------------------------------------------- 16278 Summary of changes for this label: 06_02_00 16279 16280 Support for environments that cannot handle unaligned data 16281 accesses (e.g. firmware and OS environments devoid of alignment 16282 handler technology namely SAL/EFI and the IA-64 Linux kernel) has 16283 been added (via configurable macros) in these three areas: - 16284 Transfer of data from the raw AML byte stream is done via byte 16285 moves instead of word/dword/qword moves. - External objects are 16286 aligned within the user buffer, including package elements (sub- 16287 objects). - Conversion of name strings to UINT32 Acpi Names is now 16288 done byte-wise. 16289 16290 The Store operator was modified to mimic Microsoft's 16291 implementation when storing to a Buffer Field. 16292 16293 Added a check of the BM_STS bit before entering C3. 16294 16295 The methods subdirectory has been obsoleted and removed. A new 16296 file, cmeval.c subsumes the functionality. 16297 16298 A 16-bit (DOS) version of AcpiExec has been developed. The 16299 makefile is under the acpiexec directory. 16300
Indexes created Tue Sep 30 20:09:53 GMT 2025