changes.txt revision 1.1.1.10
1 ---------------------------------------- 2 27 May 2016. Summary of changes for version 20160527: 3 4 This release is available at https://acpica.org/downloads 5 6 7 1) ACPICA kernel-resident subsystem: 8 9 Temporarily reverted the new arbitrary bit length/alignment support in 10 AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been 11 a number of regressions with the new code that need to be fully resolved 12 and tested before this support can be finally integrated into ACPICA. 13 Apologies for any inconveniences these issues may have caused. 14 15 The ACPI message macros are not configurable (ACPI_MSG_ERROR, 16 ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR, 17 and ACPI_MSG_BIOS_WARNING). Lv Zheng. 18 19 Fixed a couple of GCC warnings associated with the use of the -Wcast-qual 20 option. Adds a new return macro, return_STR. Junk-uk Kim. 21 22 Example Code and Data Size: These are the sizes for the OS-independent 23 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 24 debug version of the code includes the debug output trace mechanism and 25 has a much larger code and data size. 26 27 Current Release: 28 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total 29 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 30 Previous Release: 31 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 32 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total 33 34 ---------------------------------------- 35 22 April 2016. Summary of changes for version 20160422: 36 37 1) ACPICA kernel-resident subsystem: 38 39 Fixed a regression in the GAS (generic address structure) arbitrary bit 40 support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior 41 and incorrect return values. Lv Zheng. ACPICA BZ 1270. 42 43 ACPI 6.0: Added support for new/renamed resource macros. One new argument 44 was added to each of these macros, and the original name has been 45 deprecated. The AML disassembler will always disassemble to the new 46 names. Support for the new macros was added to iASL, disassembler, 47 resource manager, and the acpihelp utility. ACPICA BZ 1274. 48 49 I2cSerialBus -> I2cSerialBusV2 50 SpiSerialBus -> SpiSerialBusV2 51 UartSerialBus -> UartSerialBusV2 52 53 ACPI 6.0: Added support for a new integer field that was appended to the 54 package object returned by the _BIX method. This adds iASL compile-time 55 and AML runtime error checking. ACPICA BZ 1273. 56 57 ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm 58 Subspace Type2" (Headers, Disassembler, and data table compiler). 59 60 Example Code and Data Size: These are the sizes for the OS-independent 61 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 62 debug version of the code includes the debug output trace mechanism and 63 has a much larger code and data size. 64 65 Current Release: 66 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 67 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 68 Previous Release: 69 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total 70 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total 71 72 73 2) iASL Compiler/Disassembler and Tools: 74 75 iASL: Implemented an ASL grammar extension to allow/enable executable 76 "module-level code" to be created and executed under the various 77 operators that create new scopes. This type of AML code is already 78 supported in all known AML interpreters, and the grammar change will 79 appear in the next version of the ACPI specification. Simplifies the 80 conditional runtime creation of named objects under these object types: 81 82 Device 83 PowerResource 84 Processor 85 Scope 86 ThermalZone 87 88 iASL: Implemented a new ASL extension, a "For" loop macro to add greater 89 ease-of-use to the ASL language. The syntax is similar to the 90 corresponding C operator, and is implemented with the existing AML While 91 opcode -- thus requiring no changes to existing AML interpreters. 92 93 For (Initialize, Predicate, Update) {TermList} 94 95 Grammar: 96 ForTerm := 97 For ( 98 Initializer // Nothing | TermArg => ComputationalData 99 Predicate // Nothing | TermArg => ComputationalData 100 Update // Nothing | TermArg => ComputationalData 101 ) {TermList} 102 103 104 iASL: The _HID/_ADR detection and validation has been enhanced to search 105 under conditionals in order to allow these objects to be conditionally 106 created at runtime. 107 108 iASL: Fixed several issues with the constant folding feature. The 109 improvement allows better detection and resolution of statements that can 110 be folded at compile time. ACPICA BZ 1266. 111 112 iASL/Disassembler: Fixed a couple issues with the Else{If{}...} 113 conversion to the ASL ElseIf operator where incorrect ASL code could be 114 generated. 115 116 iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where 117 sometimes an extra (and extraneous) set of parentheses were emitted for 118 some combinations of operators. Although this did not cause any problems 119 with recompilation of the disassembled code, it made the code more 120 difficult to read. David Box. ACPICA BZ 1231. 121 122 iASL: Changed to ignore the unreferenced detection for predefined names 123 of resource descriptor elements, when the resource descriptor is 124 created/defined within a control method. 125 126 iASL: Disassembler: Fix a possible fault with externally declared Buffer 127 objects. 128 129 ---------------------------------------- 130 18 March 2016. Summary of changes for version 20160318: 131 132 1) ACPICA kernel-resident subsystem: 133 134 Added support for arbitrary bit lengths and bit offsets for registers 135 defined by the Generic Address Structure. Previously, only aligned bit 136 lengths of 8/16/32/64 were supported. This was sufficient for many years, 137 but recently some machines have been seen that require arbitrary bit- 138 level support. ACPICA BZ 1240. Lv Zheng. 139 140 Fixed an issue where the \_SB._INI method sometimes must be evaluated 141 before any _REG methods are evaluated. Lv Zheng. 142 143 Implemented several changes related to ACPI table support 144 (Headers/Disassembler/TableCompiler): 145 NFIT: For ACPI 6.1, updated to add some additional new fields and 146 constants. 147 FADT: Updated a warning message and set compliance to ACPI 6.1 (Version 148 6). 149 DMAR: Added new constants per the 10/2014 DMAR spec. 150 IORT: Added new subtable per the 10/2015 IORT spec. 151 HEST: For ACPI 6.1, added new constants and new subtable. 152 DBG2: Added new constants per the 12/2015 DBG2 spec. 153 FPDT: Fixed several incorrect fields, add the FPDT boot record structure. 154 ACPICA BZ 1249. 155 ERST/EINJ: Updated disassembler with new "Execute Timings" actions. 156 157 Updated header support for the DMAR table to match the current version of 158 the related spec. 159 160 Added extensions to the ASL Concatenate operator to allow any ACPI object 161 to be passed as an operand. Any object other than Integer/String/Buffer 162 simply returns a string containing the object type. This extends the 163 usefulness of the Printf macros. Previously, Concatenate would abort the 164 control method if a non-data object was encountered. 165 166 ACPICA source code: Deployed the C "const" keyword across the source code 167 where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD). 168 169 Example Code and Data Size: These are the sizes for the OS-independent 170 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 171 debug version of the code includes the debug output trace mechanism and 172 has a much larger code and data size. 173 174 Current Release: 175 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total 176 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total 177 Previous Release: 178 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total 179 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total 180 181 182 2) iASL Compiler/Disassembler and Tools: 183 184 iASL/Disassembler: Improved the heuristic used to determine the number of 185 arguments for an externally defined control method (a method in another 186 table). Although this is an improvement, there is no deterministic way to 187 "guess" the number of method arguments. Only the ACPI 6.0 External opcode 188 will completely solve this problem as it is deployed (automatically) in 189 newer BIOS code. 190 191 iASL/Disassembler: Fixed an ordering issue for emitted External() ASL 192 statements that could cause errors when the disassembled file is 193 compiled. ACPICA BZ 1243. David Box. 194 195 iASL: Fixed a regression caused by the merger of the two versions of the 196 local strtoul64. Because of a dependency on a global variable, strtoul64 197 could return an error for integers greater than a 32-bit value. ACPICA BZ 198 1260. 199 200 iASL: Fixed a regression where a fault could occur for an ASL Return 201 statement if it invokes a control method that is not resolved. ACPICA BZ 202 1264. 203 204 AcpiXtract: Improved input file validation: detection of binary files and 205 non-acpidump text files. 206 207 ---------------------------------------- 208 12 February 2016. Summary of changes for version 20160212: 209 210 1) ACPICA kernel-resident subsystem: 211 212 Implemented full support for the ACPI 6.1 specification (released in 213 January). This version of the specification is available at: 214 http://www.uefi.org/specifications 215 216 Only a relatively small number of changes were required in ACPICA to 217 support ACPI 6.1, in these areas: 218 - New predefined names 219 - New _HID values 220 - A new subtable for HEST 221 - A few other header changes for new values 222 223 Ensure \_SB_._INI is executed before any _REG methods are executed. There 224 appears to be existing BIOS code that relies on this behavior. Lv Zheng. 225 226 Reverted a change made in version 20151218 which enabled method 227 invocations to be targets of various ASL operators (SuperName and Target 228 grammar elements). While the new behavior is supported by the ACPI 229 specification, other AML interpreters do not support this behavior and 230 never will. The ACPI specification will be updated for ACPI 6.2 to remove 231 this support. Therefore, the change was reverted to the original ACPICA 232 behavior. 233 234 ACPICA now supports the GCC 6 compiler. 235 236 Current Release: (Note: build changes increased sizes) 237 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total 238 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total 239 Previous Release: 240 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total 241 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total 242 243 244 2) iASL Compiler/Disassembler and Tools: 245 246 Completed full support for the ACPI 6.0 External() AML opcode. The 247 compiler emits an external AML opcode for each ASL External statement. 248 This opcode is used by the disassembler to assist with the disassembly of 249 external control methods by specifying the required number of arguments 250 for the method. AML interpreters do not use this opcode. To ensure that 251 interpreters do not even see the opcode, a block of one or more external 252 opcodes is surrounded by an "If(0)" construct. As this feature becomes 253 commonly deployed in BIOS code, the ability of disassemblers to correctly 254 disassemble AML code will be greatly improved. David Box. 255 256 iASL: Implemented support for an optional cross-reference output file. 257 The -lx option will create a the cross-reference file with the suffix 258 "xrf". Three different types of cross-reference are created in this file: 259 - List of object references made from within each control method 260 - Invocation (caller) list for each user-defined control method 261 - List of references to each non-method object in the namespace 262 263 iASL: Method invocations as ASL Target operands are now disallowed and 264 flagged as errors in preparation for ACPI 6.2 (see the description of the 265 problem above). 266 267 ---------------------------------------- 268 8 January 2016. Summary of changes for version 20160108: 269 270 1) ACPICA kernel-resident subsystem: 271 272 Updated all ACPICA copyrights and signons to 2016: Added the 2016 273 copyright to all source code module headers and utility/tool signons. 274 This includes the standard Linux dual-license header. This affects 275 virtually every file in the ACPICA core subsystem, iASL compiler, all 276 ACPICA utilities, and the ACPICA test suite. 277 278 Fixed a regression introduced in version 20151218 concerning the 279 execution of so-called module-level ASL/AML code. Namespace objects 280 created under a module-level If() construct were not properly/fully 281 entered into the namespace and could cause an interpreter fault when 282 accessed. 283 284 Example Code and Data Size: These are the sizes for the OS-independent 285 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 286 debug version of the code includes the debug output trace mechanism and 287 has a much larger code and data size. 288 289 Current Release: 290 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total 291 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total 292 Previous Release: 293 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total 294 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total 295 296 297 2) iASL Compiler/Disassembler and Tools: 298 299 Fixed a problem with the compilation of the GpioIo and GpioInt resource 300 descriptors. The _PIN field name was incorrectly defined to be an array 301 of 32-bit values, but the _PIN values are in fact 16 bits each. This 302 would cause incorrect bit width warnings when using Word (16-bit) fields 303 to access the descriptors. 304 305 306 ---------------------------------------- 307 18 December 2015. Summary of changes for version 20151218: 308 309 1) ACPICA kernel-resident subsystem: 310 311 Implemented per-AML-table execution of "module-level code" as individual 312 ACPI tables are loaded into the namespace during ACPICA initialization. 313 In other words, any module-level code within an AML table is executed 314 immediately after the table is loaded, instead of batched and executed 315 after all of the tables have been loaded. This provides compatibility 316 with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng, 317 David Box. 318 319 To fully support the feature above, the default operation region handlers 320 for the SystemMemory, SystemIO, and PCI_Config address spaces are now 321 installed before any ACPI tables are loaded. This enables module-level 322 code to access these address spaces during the table load and module- 323 level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David 324 Box. 325 326 Implemented several changes to the internal _REG support in conjunction 327 with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples 328 utilities for the changes above. Although these tools were changed, host 329 operating systems that simply use the default handlers for SystemMemory, 330 SystemIO, and PCI_Config spaces should not require any update. Lv Zheng. 331 332 For example, in the code below, DEV1 is conditionally added to the 333 namespace by the DSDT via module-level code that accesses an operation 334 region. The SSDT references DEV1 via the Scope operator. DEV1 must be 335 created immediately after the DSDT is loaded in order for the SSDT to 336 successfully reference DEV1. Previously, this code would cause an 337 AE_NOT_EXIST exception during the load of the SSDT. Now, this code is 338 fully supported by ACPICA. 339 340 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1) 341 { 342 OperationRegion (OPR1, SystemMemory, 0x400, 32) 343 Field (OPR1, AnyAcc, NoLock, Preserve) 344 { 345 FLD1, 1 346 } 347 If (FLD1) 348 { 349 Device (\DEV1) 350 { 351 } 352 } 353 } 354 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1) 355 { 356 External (\DEV1, DeviceObj) 357 Scope (\DEV1) 358 { 359 } 360 } 361 362 Fixed an AML interpreter problem where control method invocations were 363 not handled correctly when the invocation was itself a SuperName argument 364 to another ASL operator. In these cases, the method was not invoked. 365 ACPICA BZ 1002. Affects the following ASL operators that have a SuperName 366 argument: 367 Store 368 Acquire, Wait 369 CondRefOf, RefOf 370 Decrement, Increment 371 Load, Unload 372 Notify 373 Signal, Release, Reset 374 SizeOf 375 376 Implemented automatic String-to-ObjectReference conversion support for 377 packages returned by predefined names (such as _DEP). A common BIOS error 378 is to add double quotes around an ObjectReference namepath, which turns 379 the reference into an unexpected string object. This support detects the 380 problem and corrects it before the package is returned to the caller that 381 invoked the method. Lv Zheng. 382 383 Implemented extensions to the Concatenate operator. Concatenate now 384 accepts any type of object, it is not restricted to simply 385 Integer/String/Buffer. For objects other than these 3 basic data types, 386 the argument is treated as a string containing the name of the object 387 type. This expands the utility of Concatenate and the Printf/Fprintf 388 macros. ACPICA BZ 1222. 389 390 Cleaned up the output of the ASL Debug object. The timer() value is now 391 optional and no longer emitted by default. Also, the basic data types of 392 Integer/String/Buffer are simply emitted as their values, without a data 393 type string -- since the data type is obvious from the output. ACPICA BZ 394 1221. 395 396 Example Code and Data Size: These are the sizes for the OS-independent 397 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 398 debug version of the code includes the debug output trace mechanism and 399 has a much larger code and data size. 400 401 Current Release: 402 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total 403 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total 404 Previous Release: 405 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 406 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 407 408 409 2) iASL Compiler/Disassembler and Tools: 410 411 iASL: Fixed some issues with the ASL Include() operator. This operator 412 was incorrectly defined in the iASL parser rules, causing a new scope to 413 be opened for the code within the include file. This could lead to 414 several issues, including allowing ASL code that is technically illegal 415 and not supported by AML interpreters. Note, this does not affect the 416 related #include preprocessor operator. ACPICA BZ 1212. 417 418 iASL/Disassembler: Implemented support for the ASL ElseIf operator. This 419 operator is essentially an ASL macro since there is no AML opcode 420 associated with it. The code emitted by the iASL compiler for ElseIf is 421 an Else opcode followed immediately by an If opcode. The disassembler 422 will now emit an ElseIf if it finds an Else immediately followed by an 423 If. This simplifies the decoded ASL, especially for deeply nested 424 If..Else and large Switch constructs. Thus, the disassembled code more 425 closely follows the original source ASL. ACPICA BZ 1211. Example: 426 427 Old disassembly: 428 Else 429 { 430 If (Arg0 == 0x02) 431 { 432 Local0 = 0x05 433 } 434 } 435 436 New disassembly: 437 ElseIf (Arg0 == 0x02) 438 { 439 Local0 = 0x05 440 } 441 442 AcpiExec: Added support for the new module level code behavior and the 443 early region installation. This required a small change to the 444 initialization, since AcpiExec must install its own operation region 445 handlers. 446 447 AcpiExec: Added support to make the debug object timer optional. Default 448 is timer disabled. This cleans up the debug object output -- the timer 449 data is rarely used. 450 451 AcpiExec: Multiple ACPI tables are now loaded in the order that they 452 appear on the command line. This can be important when there are 453 interdependencies/references between the tables. 454 455 iASL/Templates. Add support to generate template files with multiple 456 SSDTs within a single output file. Also added ommand line support to 457 specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ 458 1223, 1225. 459 460 461 ---------------------------------------- 462 24 November 2015. Summary of changes for version 20151124: 463 464 1) ACPICA kernel-resident subsystem: 465 466 Fixed a possible regression for a previous update to FADT handling. The 467 FADT no longer has a fixed table ID, causing some issues with code that 468 was hardwired to a specific ID. Lv Zheng. 469 470 Fixed a problem where the method auto-serialization could interfere with 471 the current SyncLevel. This change makes the auto-serialization support 472 transparent to the SyncLevel support and management. 473 474 Removed support for the _SUB predefined name in AcpiGetObjectInfo. This 475 interface is intended for early access to the namespace during the 476 initial namespace device discovery walk. The _SUB method has been seen to 477 access operation regions in some cases, causing errors because the 478 operation regions are not fully initialized. 479 480 AML Debugger: Fixed some issues with the terminate/quit/exit commands 481 that can cause faults. Lv Zheng. 482 483 AML Debugger: Add thread ID support so that single-step mode only applies 484 to the AML Debugger thread. This prevents runtime errors within some 485 kernels. Lv Zheng. 486 487 Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx 488 methods that are invoked by this interface are optional, removed warnings 489 emitted for the case where one or more of these methods do not exist. 490 ACPICA BZ 1208, original change by Prarit Bhargava. 491 492 Made a major pass through the entire ACPICA source code base to 493 standardize formatting that has diverged a bit over time. There are no 494 functional changes, but this will of course cause quite a few code 495 differences from the previous ACPICA release. 496 497 Example Code and Data Size: These are the sizes for the OS-independent 498 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 499 debug version of the code includes the debug output trace mechanism and 500 has a much larger code and data size. 501 502 Current Release: 503 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 504 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 505 Previous Release: 506 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 507 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 508 509 510 2) iASL Compiler/Disassembler and Tools: 511 512 iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple 513 definition blocks within a single ASL file and the resulting AML file. 514 Support for this type of file was also added to the various tools that 515 use binary AML files: acpiexec, acpixtract, and the AML disassembler. The 516 example code below shows two definition blocks within the same file: 517 518 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template", 519 0x12345678) 520 { 521 } 522 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01) 523 { 524 } 525 526 iASL: Enhanced typechecking for the Name() operator. All expressions for 527 the value of the named object must be reduced/folded to a single constant 528 at compile time, as per the ACPI specification (the AML definition of 529 Name()). 530 531 iASL: Fixed some code indentation issues for the -ic and -ia options (C 532 and assembly headers). Now all emitted code correctly begins in column 1. 533 534 iASL: Added an error message for an attempt to open a Scope() on an 535 object defined in an SSDT. The DSDT is always loaded into the namespace 536 first, so any attempt to open a Scope on an SSDT object will fail at 537 runtime. 538 539 540 ---------------------------------------- 541 30 September 2015. Summary of changes for version 20150930: 542 543 1) ACPICA kernel-resident subsystem: 544 545 Debugger: Implemented several changes and bug fixes to assist support for 546 the in-kernel version of the AML debugger. Lv Zheng. 547 - Fix the "predefined" command for in-kernel debugger. 548 - Do not enter debug command loop for the help and version commands. 549 - Disallow "execute" command during execution/single-step of a method. 550 551 Interpreter: Updated runtime typechecking for all operators that have 552 target operands. The operand is resolved and validated that it is legal. 553 For example, the target cannot be a non-data object such as a Device, 554 Mutex, ThermalZone, etc., as per the ACPI specification. 555 556 Debugger: Fixed the double-mutex user I/O handshake to work when local 557 deadlock detection is enabled. 558 559 Debugger: limited display of method locals and arguments (LocalX and 560 ArgX) to only those that have actually been initialized. This prevents 561 lines of extraneous output. 562 563 Updated the definition of the NFIT table to correct the bit polarity of 564 one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED 565 566 Example Code and Data Size: These are the sizes for the OS-independent 567 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 568 debug version of the code includes the debug output trace mechanism and 569 has a much larger code and data size. 570 571 Current Release: 572 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 573 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 574 Previous Release: 575 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 576 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 577 578 579 2) iASL Compiler/Disassembler and Tools: 580 581 iASL: Improved the compile-time typechecking for operands of many of the 582 ASL operators: 583 584 -- Added an option to disable compiler operand/operator typechecking (- 585 ot). 586 587 -- For the following operators, the TermArg operands are now validated 588 when possible to be Integer data objects: BankField, OperationRegion, 589 DataTableRegion, Buffer, and Package. 590 591 -- Store (Source, Target): Both the source and target operands are 592 resolved and checked that the operands are both legal. For example, 593 neither operand can be a non-data object such as a Device, Mutex, 594 ThermalZone, etc. Note, as per the ACPI specification, the CopyObject 595 operator can be used to store an object to any type of target object. 596 597 -- Store (Source, Target): If the source is a Package object, the target 598 must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target 599 is a Package, the source must also be a Package. 600 601 -- Store (Source, Target): A warning is issued if the source and target 602 resolve to the identical named object. 603 604 -- Store (Source, <method invocation>): An error is generated for the 605 target method invocation, as this construct is not supported by the AML 606 interpreter. 607 608 -- For all ASL math and logic operators, the target operand must be a 609 data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This 610 includes the function return value also. 611 612 -- External declarations are also included in the typechecking where 613 possible. External objects defined using the UnknownObj keyword cannot be 614 typechecked, however. 615 616 iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index 617 operator: 618 - Legacy code: Index(PKG1, 3) 619 - New ASL+ code: PKG1[3] 620 This completes the ACPI 6.0 ASL+ support as it was the only operator not 621 supported. 622 623 iASL: Fixed the file suffix for the preprocessor output file (.i). Two 624 spaces were inadvertently appended to the filename, causing file access 625 and deletion problems on some systems. 626 627 ASL Test Suite (ASLTS): Updated the master makefile to generate all 628 possible compiler output files when building the test suite -- thus 629 exercising these features of the compiler. These files are automatically 630 deleted when the test suite exits. 631 632 633 ---------------------------------------- 634 18 August 2015. Summary of changes for version 20150818: 635 636 1) ACPICA kernel-resident subsystem: 637 638 Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv 639 Zheng. ACPICA BZ 1186. 640 641 Completed development to ensure that the ACPICA Disassembler and Debugger 642 are fully standalone components of ACPICA. Removed cross-component 643 dependences. Lv Zheng. 644 645 The max-number-of-AML-loops is now runtime configurable (previously was 646 compile-time only). This is essentially a loop timeout to force-abort 647 infinite AML loops. ACPCIA BZ 1192. 648 649 Debugger: Cleanup output to dump ACPI names and namepaths without any 650 trailing underscores. Lv Zheng. ACPICA BZ 1135. 651 652 Removed unnecessary conditional compilations across the Debugger and 653 Disassembler components where entire modules could be left uncompiled. 654 655 The aapits test is deprecated and has been removed from the ACPICA git 656 tree. The test has never been completed and has not been maintained, thus 657 becoming rather useless. ACPICA BZ 1015, 794. 658 659 A batch of small changes to close bugzilla and other reports: 660 - Remove duplicate code for _PLD processing. ACPICA BZ 1176. 661 - Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185. 662 - iASL: Support POSIX yacc again in makefile. Jung-uk Kim. 663 - ACPI table support: general cleanup and simplification. Lv Zheng, Bob 664 Moore. 665 - ACPI table support: fix for a buffer read overrun in AcpiTbFindTable. 666 ACPICA BZ 1184. 667 - Enhance parameter validation for DataTableRegion and LoadTable ASL/AML 668 operators. 669 - Debugger: Split debugger initialization/termination interfaces. Lv 670 Zheng. 671 - AcpiExec: Emit OemTableId for SSDTs during the load phase for table 672 identification. 673 - AcpiExec: Add debug message during _REG method phase during table 674 load/init. 675 - AcpiNames: Fix a regression where some output was missing and no longer 676 emitted. 677 - Debugger: General cleanup and simplification. Lv Zheng. 678 - Disassembler: Cleanup use of several global option variables. Lv Zheng. 679 680 Example Code and Data Size: These are the sizes for the OS-independent 681 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 682 debug version of the code includes the debug output trace mechanism and 683 has a much larger code and data size. 684 685 Current Release: 686 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 687 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 688 Previous Release: 689 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 690 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 691 692 693 2) iASL Compiler/Disassembler and Tools: 694 695 AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT 696 were not handled properly and caused load errors. Now, properly invoke 697 and use the ACPICA auto-reallocate mechanism for ACPI table data 698 structures. ACPICA BZ 1188 699 700 AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA 701 BZ 1190. 702 703 AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For 704 AcpiExec, this means that no control methods (like _REG/_INI/_STA) are 705 executed during initialization. ACPICA BZ 1187, 1189. 706 707 iASL/Disassembler: Implemented a prototype "listing" mode that emits AML 708 that corresponds to each disassembled ASL statement, to simplify 709 debugging. ACPICA BZ 1191. 710 711 Debugger: Add option to the "objects" command to display a summary of the 712 current namespace objects (Object type and count). This is displayed if 713 the command is entered with no arguments. 714 715 AcpiNames: Add -x option to specify debug level, similar to AcpiExec. 716 717 718 ---------------------------------------- 719 17 July 2015. Summary of changes for version 20150717: 720 721 1) ACPICA kernel-resident subsystem: 722 723 Improved the partitioning between the Debugger and Disassembler 724 components. This allows the Debugger to be used standalone within kernel 725 code without the Disassembler (which is used for single stepping also). 726 This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng. 727 728 Debugger: Implemented a new command to trace the execution of control 729 methods (Trace). This is especially useful for the in-kernel version of 730 the debugger when file I/O may not be available for method trace output. 731 See the ACPICA reference for more information. Lv Zheng. 732 733 Moved all C library prototypes (used for the local versions of these 734 functions when requested) to a new header, acclib.h 735 Cleaned up the use of non-ANSI C library functions. These functions are 736 implemented locally in ACPICA. Moved all such functions to a common 737 source file, utnonansi.c 738 739 Debugger: Fixed a problem with the "!!" command (get last command 740 executed) where the debugger could enter an infinite loop and eventually 741 crash. 742 743 Removed the use of local macros that were used for some of the standard C 744 library functions to automatically cast input parameters. This mostly 745 affected the is* functions where the input parameter is defined to be an 746 int. This required a few modifications to the main ACPICA source code to 747 provide casting for these functions and eliminate possible compiler 748 warnings for these parameters. 749 750 Across the source code, added additional status/error checking to resolve 751 issues discovered by static source code analysis tools such as Coverity. 752 753 Example Code and Data Size: These are the sizes for the OS-independent 754 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 755 debug version of the code includes the debug output trace mechanism and 756 has a much larger code and data size. 757 758 Current Release: 759 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 760 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 761 Previous Release: 762 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 763 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 764 765 766 2) iASL Compiler/Disassembler and Tools: 767 768 iASL: Fixed a regression where the device map file feature no longer 769 worked properly when used in conjunction with the disassembler. It only 770 worked properly with the compiler itself. 771 772 iASL: Implemented a new warning for method LocalX variables that are set 773 but never used (similar to a C compiler such as gcc). This also applies 774 to ArgX variables that are not defined by the parent method, and are 775 instead (legally) used as local variables. 776 777 iASL/Preprocessor: Finished the pass-through of line numbers from the 778 preprocessor to the compiler. This ensures that compiler errors/warnings 779 have the correct original line numbers and filenames, regardless of any 780 #include files. 781 782 iASL/Preprocessor: Fixed a couple of issues with comment handling and the 783 pass-through of comments to the preprocessor output file (which becomes 784 the compiler input file). Also fixed a problem with // comments that 785 appear after a math expression. 786 787 iASL: Added support for the TCPA server table to the table compiler and 788 template generator. (The client table was already previously supported) 789 790 iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to 791 identify the iASL compiler. 792 793 Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined 794 multiple times. The new names are ACPI_SIGN_NEGATIVE and 795 ACPI_SIGN_POSITIVE. 796 797 AcpiHelp: Update to expand help messages for the iASL preprocessor 798 directives. 799 800 801 ---------------------------------------- 802 19 June 2015. Summary of changes for version 20150619: 803 804 Two regressions in version 20150616 have been addressed: 805 806 Fixes some problems/issues with the C library macro removal (ACPI_STRLEN, 807 etc.) This update changes ACPICA to only use the standard headers for 808 functions, or the prototypes for the local versions of the C library 809 functions. Across the source code, this required some additional casts 810 for some Clib invocations for portability. Moved all local prototypes to 811 a new file, acclib.h 812 813 Fixes several problems with recent changes to the handling of the FACS 814 table that could cause some systems not to boot. 815 816 817 ---------------------------------------- 818 16 June 2015. Summary of changes for version 20150616: 819 820 821 1) ACPICA kernel-resident subsystem: 822 823 Across the entire ACPICA source code base, the various macros for the C 824 library functions (such as ACPI_STRLEN, etc.) have been removed and 825 replaced by the standard C library names (strlen, etc.) The original 826 purpose for these macros is no longer applicable. This simplification 827 reduces the number of macros used in the ACPICA source code 828 significantly, improving readability and maintainability. 829 830 Implemented support for a new ACPI table, the OSDT. This table, the 831 "override" SDT, can be loaded directly by the host OS at boot time. It 832 enables the replacement of existing namespace objects that were installed 833 via the DSDT and/or SSDTs. The primary purpose for this is to replace 834 buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated 835 for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob 836 Moore. 837 838 Added support for systems with (improperly) two FACS tables -- a "32-bit" 839 table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit 840 X field). This change will support both automatically. There continues to 841 be systems found with this issue. This support requires a change to the 842 AcpiSetFirmwareWakingVector interface. Also, a public global variable has 843 been added to allow the host to select which FACS is desired 844 (AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more 845 details Lv Zheng. 846 847 Added a new feature to allow for systems that do not contain an FACS. 848 Although this is already supported on hardware-reduced platforms, the 849 feature has been extended for all platforms. The reasoning is that we do 850 not want to abort the entire ACPICA initialization just because the 851 system is seriously buggy and has no FACS. 852 853 Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were 854 not correctly transcribed from the ACPI specification in ACPICA version 855 20150515. 856 857 Implemented support for the _CLS object in the AcpiGetObjectInfo external 858 interface. 859 860 Updated the definitions of the TCPA and TPM2 ACPI tables to the more 861 recent TCG ACPI Specification, December 14, 2014. Table disassembler and 862 compiler also updated. Note: The TCPA "server" table is not supported by 863 the disassembler/table-compiler at this time. 864 865 ACPI 6.0: Added definitions for the new GIC version field in the MADT. 866 867 Example Code and Data Size: These are the sizes for the OS-independent 868 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 869 debug version of the code includes the debug output trace mechanism and 870 has a much larger code and data size. 871 872 Current Release: 873 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 874 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 875 Previous Release: 876 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 877 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 878 879 880 2) iASL Compiler/Disassembler and Tools: 881 882 Disassembler: Fixed a problem with the new symbolic operator disassembler 883 where incorrect ASL code could be emitted in some cases for the "non- 884 commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and 885 ShiftRight. The actual problem cases seem to be rather unusual in common 886 ASL code, however. David Box. 887 888 Modified the linux version of acpidump to obtain ACPI tables from not 889 just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv 890 Zheng. 891 892 iASL: Fixed a problem where the user preprocessor output file (.i) 893 contained extra data that was not expected. The compiler was using this 894 file as a temporary file and passed through #line directives in order to 895 keep compiler error messages in sync with the input file and line number 896 across multiple include files. The (.i) is no longer a temporary file as 897 the compiler uses a new, different file for the original purpose. 898 899 iASL: Fixed a problem where comments within the original ASL source code 900 file were not passed through to the preprocessor output file, nor any 901 listing files. 902 903 iASL: Fixed some issues for the handling of the "#include" preprocessor 904 directive and the similar (but not the same) "Include" ASL operator. 905 906 iASL: Add support for the new OSDT in both the disassembler and compiler. 907 908 iASL: Fixed a problem with the constant folding support where a Buffer 909 object could be incorrectly generated (incorrectly formed) during a 910 conversion to a Store() operator. 911 912 AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new 913 description text for the _REV predefined name. _REV now permanently 914 returns 2, as per the ACPI 6.0 specification. 915 916 Debugger: Enhanced the output of the Debug ASL object for references 917 produced by the Index operator. For Buffers and strings, only output the 918 actual byte pointed to by the index. For packages, only print the single 919 package element decoded by the index. Previously, the entire 920 buffer/string/package was emitted. 921 922 iASL/Table-compiler: Fixed a regression where the "generic" data types 923 were no longer recognized, causing errors. 924 925 926 ---------------------------------------- 927 15 May 2015. Summary of changes for version 20150515: 928 929 This release implements most of ACPI 6.0 as described below. 930 931 1) ACPICA kernel-resident subsystem: 932 933 Implemented runtime argument checking and return value checking for all 934 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI, 935 _MTL, _PRR, _RDI, _RST, _TFP, _TSN. 936 937 Example Code and Data Size: These are the sizes for the OS-independent 938 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 939 debug version of the code includes the debug output trace mechanism and 940 has a much larger code and data size. 941 942 Current Release: 943 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 944 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 945 Previous Release: 946 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 947 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 948 949 950 2) iASL Compiler/Disassembler and Tools: 951 952 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined 953 names (argument count validation and return value typechecking.) 954 955 iASL disassembler and table compiler: implemented support for all new 956 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV. 957 958 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing 959 tables: FADT, MADT. 960 961 iASL preprocessor: Added a new directive to enable inclusion of binary 962 blobs into ASL code. The new directive is #includebuffer. It takes a 963 binary file as input and emits a named ascii buffer object into the ASL 964 code. 965 966 AcpiHelp: Added support for all new ACPI 6.0 predefined names. 967 968 AcpiHelp: Added a new option, -d, to display all iASL preprocessor 969 directives. 970 971 AcpiHelp: Added a new option, -t, to display all known/supported ACPI 972 tables. 973 974 975 ---------------------------------------- 976 10 April 2015. Summary of changes for version 20150410: 977 978 Reverted a change introduced in version 20150408 that caused 979 a regression in the disassembler where incorrect operator 980 symbols could be emitted. 981 982 983 ---------------------------------------- 984 08 April 2015. Summary of changes for version 20150408: 985 986 987 1) ACPICA kernel-resident subsystem: 988 989 Permanently set the return value for the _REV predefined name. It now 990 returns 2 (was 5). This matches other ACPI implementations. _REV will be 991 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2 992 for ACPI 2.0 and later. It should never be used to differentiate or 993 identify operating systems. 994 995 Added the "Windows 2015" string to the _OSI support. ACPICA will now 996 return TRUE to a query with this string. 997 998 Fixed several issues with the local version of the printf function. 999 1000 Added the C99 compiler option (-std=c99) to the Unix makefiles. 1001 1002 Current Release: 1003 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total 1004 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total 1005 Previous Release: 1006 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 1007 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 1008 1009 1010 2) iASL Compiler/Disassembler and Tools: 1011 1012 iASL: Implemented an enhancement to the constant folding feature to 1013 transform the parse tree to a simple Store operation whenever possible: 1014 Add (2, 3, X) ==> is converted to: Store (5, X) 1015 X = 2 + 3 ==> is converted to: Store (5, X) 1016 1017 Updated support for the SLIC table (Software Licensing Description Table) 1018 in both the Data Table compiler and the disassembler. The SLIC table 1019 support now conforms to "Microsoft Software Licensing Tables (SLIC and 1020 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data 1021 following the ACPI header is now defined to be "Proprietary Data", and as 1022 such, can only be entered or displayed as a hex data block. 1023 1024 Implemented full support for the MSDM table as described in the document 1025 above. Note: The format of MSDM is similar to SLIC. Any MSDM data 1026 following the ACPI header is defined to be "Proprietary Data", and can 1027 only be entered or displayed as a hex data block. 1028 1029 Implemented the -Pn option for the iASL Table Compiler (was only 1030 implemented for the ASL compiler). This option disables the iASL 1031 preprocessor. 1032 1033 Disassembler: For disassembly of Data Tables, added a comment field 1034 around the Ascii equivalent data that is emitted as part of the "Raw 1035 Table Data" block. This prevents the iASL Preprocessor from possible 1036 confusion if/when the table is compiled. 1037 1038 Disassembler: Added an option (-df) to force the disassembler to assume 1039 that the table being disassembled contains valid AML. This feature is 1040 useful for disassembling AML files that contain ACPI signatures other 1041 than DSDT or SSDT (such as OEMx or other signatures). 1042 1043 Changes for the EFI version of the tools: 1044 1) Fixed a build error/issue 1045 2) Fixed a cast warning 1046 1047 iASL: Fixed a path issue with the __FILE__ operator by making the 1048 directory prefix optional within the internal SplitInputFilename 1049 function. 1050 1051 Debugger: Removed some unused global variables. 1052 1053 Tests: Updated the makefile for proper generation of the AAPITS suite. 1054 1055 1056 ---------------------------------------- 1057 04 February 2015. Summary of changes for version 20150204: 1058 1059 ACPICA kernel-resident subsystem: 1060 1061 Updated all ACPICA copyrights and signons to 2014. Added the 2014 1062 copyright to all module headers and signons, including the standard Linux 1063 header. This affects virtually every file in the ACPICA core subsystem, 1064 iASL compiler, all ACPICA utilities, and the test suites. 1065 1066 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues. 1067 A raw gpe handling mechanism was created to allow better handling of GPE 1068 storms that aren't easily managed by the normal handler. The raw handler 1069 allows disabling/renabling of the the GPE so that interrupt storms can be 1070 avoided in cases where events cannot be timely serviced. In this 1071 scenario, handlers should use the AcpiSetGpe() API to disable/enable the 1072 GPE. This API will leave the reference counts undisturbed, thereby 1073 preventing unintentional clearing of the GPE when the intent in only to 1074 temporarily disable it. Raw handlers allow enabling and disabling of a 1075 GPE by removing GPE register locking. As such, raw handlers much provide 1076 their own locks while using GPE API's to protect access to GPE data 1077 structures. 1078 Lv Zheng 1079 1080 Events: Always modify GPE registers under the GPE lock. 1081 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register 1082 values. Reported as bug by joe.liu (a] apple.com. 1083 1084 Unix makefiles: Separate option to disable optimizations and 1085 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the 1086 NOOPT disable option and creates a separate flag (NOFORTIFY) for this 1087 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined 1088 errors when building ACPICA. This allows disabling the option without 1089 also having to disable optimazations. 1090 David Box 1091 1092 Current Release: 1093 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 1094 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total 1095 1096 -- 1097 -------------------------------------- 1098 07 November 2014. Summary of changes for version 20141107: 1099 1100 This release is available at https://acpica.org/downloads 1101 1102 This release introduces and implements language extensions to ASL that 1103 provide support for symbolic ("C-style") operators and expressions. These 1104 language extensions are known collectively as ASL+. 1105 1106 1107 1) iASL Compiler/Disassembler and Tools: 1108 1109 Disassembler: Fixed a problem with disassembly of the UartSerialBus 1110 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E. 1111 Box. 1112 1113 Disassembler: Fixed the Unicode macro support to add escape sequences. 1114 All non-printable ASCII values are emitted as escape sequences, as well 1115 as the standard escapes for quote and backslash. Ensures that the 1116 disassembled macro can be correctly recompiled. 1117 1118 iASL: Added Printf/Fprintf macros for formatted output. These macros are 1119 translated to existing AML Concatenate and Store operations. Printf 1120 writes to the ASL Debug object. Fprintf allows the specification of an 1121 ASL name as the target. Only a single format specifier is required, %o, 1122 since the AML interpreter dynamically converts objects to the required 1123 type. David E. Box. 1124 1125 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 1126 (Concatenate (Concatenate (Concatenate ("", Arg0), 1127 ": Unexpected value for "), Arg1), ", "), Arg2), 1128 " at line "), Arg3), Debug) 1129 1130 (new) Printf ("%o: Unexpected value for %o, %o at line %o", 1131 Arg0, Arg1, Arg2, Arg3) 1132 1133 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 1134 ("", Arg1), ": "), Arg0), " Successful"), STR1) 1135 1136 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0) 1137 1138 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the 1139 ASL parse tree before the AML code is generated. This allows blocks of 1140 ASL code to be removed in order to help locate and identify problem 1141 devices and/or code. David E. Box. 1142 1143 AcpiExec: Added support (-fi) for an optional namespace object 1144 initialization file. This file specifies initial values for namespace 1145 objects as necessary for debugging and testing different ASL code paths 1146 that may be taken as a result of BIOS options. 1147 1148 1149 2) Overview of symbolic operator support for ASL (ASL+) 1150 ------------------------------------------------------- 1151 1152 As an extension to the ASL language, iASL implements support for symbolic 1153 (C-style) operators for math and logical expressions. This can greatly 1154 simplify ASL code as well as improve both readability and 1155 maintainability. These language extensions can exist concurrently with 1156 all legacy ASL code and expressions. 1157 1158 The symbolic extensions are 100% compatible with existing AML 1159 interpreters, since no new AML opcodes are created. To implement the 1160 extensions, the iASL compiler transforms the symbolic expressions into 1161 the legacy ASL/AML equivalents at compile time. 1162 1163 Full symbolic expressions are supported, along with the standard C 1164 precedence and associativity rules. 1165 1166 Full disassembler support for the symbolic expressions is provided, and 1167 creates an automatic migration path for existing ASL code to ASL+ code 1168 via the disassembly process. By default, the disassembler now emits ASL+ 1169 code with symbolic expressions. An option (-dl) is provided to force the 1170 disassembler to emit legacy ASL code if desired. 1171 1172 Below is the complete list of the currently supported symbolic operators 1173 with examples. See the iASL User Guide for additional information. 1174 1175 1176 ASL+ Syntax Legacy ASL Equivalent 1177 ----------- --------------------- 1178 1179 // Math operators 1180 1181 Z = X + Y Add (X, Y, Z) 1182 Z = X - Y Subtract (X, Y, Z) 1183 Z = X * Y Multiply (X, Y, Z) 1184 Z = X / Y Divide (X, Y, , Z) 1185 Z = X % Y Mod (X, Y, Z) 1186 Z = X << Y ShiftLeft (X, Y, Z) 1187 Z = X >> Y ShiftRight (X, Y, Z) 1188 Z = X & Y And (X, Y, Z) 1189 Z = X | Y Or (X, Y, Z) 1190 Z = X ^ Y Xor (X, Y, Z) 1191 Z = ~X Not (X, Z) 1192 X++ Increment (X) 1193 X-- Decrement (X) 1194 1195 // Logical operators 1196 1197 (X == Y) LEqual (X, Y) 1198 (X != Y) LNotEqual (X, Y) 1199 (X < Y) LLess (X, Y) 1200 (X > Y) LGreater (X, Y) 1201 (X <= Y) LLessEqual (X, Y) 1202 (X >= Y) LGreaterEqual (X, Y) 1203 (X && Y) LAnd (X, Y) 1204 (X || Y) LOr (X, Y) 1205 (!X) LNot (X) 1206 1207 // Assignment and compound assignment operations 1208 1209 X = Y Store (Y, X) 1210 X += Y Add (X, Y, X) 1211 X -= Y Subtract (X, Y, X) 1212 X *= Y Multiply (X, Y, X) 1213 X /= Y Divide (X, Y, , X) 1214 X %= Y Mod (X, Y, X) 1215 X <<= Y ShiftLeft (X, Y, X) 1216 X >>= Y ShiftRight (X, Y, X) 1217 X &= Y And (X, Y, X) 1218 X |= Y Or (X, Y, X) 1219 X ^= Y Xor (X, Y, X) 1220 1221 1222 3) ASL+ Examples: 1223 ----------------- 1224 1225 Legacy ASL: 1226 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual ( 1227 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530, 1228 0x03FB), 1229 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0)))) 1230 { 1231 And (MEMB, 0xFFFFFFF0, SRMB) 1232 Store (MEMB, Local2) 1233 Store (PDBM, Local1) 1234 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM) 1235 Store (SRMB, MEMB) 1236 Or (PDBM, 0x02, PDBM) 1237 } 1238 1239 ASL+ version: 1240 If (((R510 & 0x03FB) == 0x02E0) || 1241 ((R520 & 0x03FB) == 0x02E0) || 1242 ((R530 & 0x03FB) == 0x02E0) || 1243 ((R540 & 0x03FB) == 0x02E0)) 1244 { 1245 SRMB = (MEMB & 0xFFFFFFF0) 1246 Local2 = MEMB 1247 Local1 = PDBM 1248 PDBM &= 0xFFFFFFFFFFFFFFF9 1249 MEMB = SRMB 1250 PDBM |= 0x02 1251 } 1252 1253 Legacy ASL: 1254 Store (0x1234, Local1) 1255 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3) 1256 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3) 1257 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3) 1258 Store (Index (PKG1, 0x03), Local6) 1259 Store (Add (Local3, Local2), Debug) 1260 Add (Local1, 0x0F, Local2) 1261 Add (Local1, Multiply (Local2, Local3), Local2) 1262 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3) 1263 1264 ASL+ version: 1265 Local1 = 0x1234 1266 Local3 = (((Local1 + TEST) + 0x20) * Local2) 1267 Local3 = (Local2 * ((Local1 + TEST) + 0x20)) 1268 Local3 = (Local1 + (TEST + (0x20 * Local2))) 1269 Local6 = Index (PKG1, 0x03) 1270 Debug = (Local3 + Local2) 1271 Local2 = (Local1 + 0x0F) 1272 Local2 = (Local1 + (Local2 * Local3)) 1273 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1)) 1274 1275 1276 ---------------------------------------- 1277 26 September 2014. Summary of changes for version 20140926: 1278 1279 1) ACPICA kernel-resident subsystem: 1280 1281 Updated the GPIO operation region handler interface (GeneralPurposeIo). 1282 In order to support GPIO Connection objects with multiple pins, along 1283 with the related Field objects, the following changes to the interface 1284 have been made: The Address is now defined to be the offset in bits of 1285 the field unit from the previous invocation of a Connection. It can be 1286 viewed as a "Pin Number Index" into the connection resource descriptor. 1287 The BitWidth is the exact bit width of the field. It is usually one bit, 1288 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for 1289 additional information and examples. 1290 1291 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with 1292 corresponding _Lxx/_Exx methods are disabled (they may have been enabled 1293 by the firmware), so that they cannot fire until they are enabled via 1294 AcpiUpdateAllGpes. Rafael J. Wysocki. 1295 1296 Added a new return flag for the Event/GPE status interfaces -- 1297 AcpiGetEventStatus and AcpiGetGpeStatus. The new 1298 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or 1299 GPE currently has a handler associated with it, and can thus actually 1300 affect the system. Lv Zheng. 1301 1302 Example Code and Data Size: These are the sizes for the OS-independent 1303 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1304 debug version of the code includes the debug output trace mechanism and 1305 has a much larger code and data size. 1306 1307 Current Release: 1308 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 1309 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 1310 Previous Release: 1311 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 1312 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 1313 1314 2) iASL Compiler/Disassembler and Tools: 1315 1316 iASL: Fixed a memory allocation/free regression introduced in 20140828 1317 that could cause the compiler to crash. This was introduced inadvertently 1318 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111, 1319 1113. 1320 1321 iASL: Removed two error messages that have been found to create false 1322 positives, until they can be fixed and fully validated (ACPICA BZ 1112): 1323 1) Illegal forward reference within a method 1324 2) Illegal reference across two methods 1325 1326 iASL: Implemented a new option (-lm) to create a hardware mapping file 1327 that summarizes all GPIO, I2C, SPI, and UART connections. This option 1328 works for both the compiler and disassembler. See the iASL compiler user 1329 guide for additional information and examples (section 6.4.6). 1330 1331 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to 1332 version 2. This corrects the AE_BAD_HEADER exception seen on systems with 1333 a version 1 RSDP. Lv Zheng ACPICA BZ 1097. 1334 1335 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode 1336 unless STDIN is actually a terminal. Assists with batch-mode processing. 1337 ACPICA BZ 1114. 1338 1339 Disassembler/AcpiHelp: Added another large group of recognized _HID 1340 values. 1341 1342 1343 ---------------------------------------- 1344 28 August 2014. Summary of changes for version 20140828: 1345 1346 1) ACPICA kernel-resident subsystem: 1347 1348 Fixed a problem related to the internal use of the Timer() operator where 1349 a 64-bit divide could cause an attempted link to a double-precision math 1350 library. This divide is not actually necessary, so the code was 1351 restructured to eliminate it. Lv Zheng. 1352 1353 ACPI 5.1: Added support for the runtime validation of the _DSD package 1354 (similar to the iASL support). 1355 1356 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the 1357 SRAT table. Hanjun Guo <hanjun.guo (a] linaro.org>. 1358 1359 Example Code and Data Size: These are the sizes for the OS-independent 1360 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1361 debug version of the code includes the debug output trace mechanism and 1362 has a much larger code and data size. 1363 1364 Current Release: 1365 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 1366 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 1367 Previous Release: 1368 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1 1369 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 1370 1371 2) iASL Compiler/Disassembler and Tools: 1372 1373 AcpiExec: Fixed a problem on unix systems where the original terminal 1374 state was not always properly restored upon exit. Seen when using the -v 1375 option. ACPICA BZ 1104. 1376 1377 iASL: Fixed a problem with the validation of the ranges/length within the 1378 Memory24 resource descriptor. There was a boundary condition when the 1379 range was equal to the (length -1) caused by the fact that these values 1380 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098 1381 1382 Disassembler: Fixed a problem with the GpioInt descriptor interrupt 1383 polarity 1384 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword 1385 is 1386 now supported properly. 1387 1388 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported 1389 in the disassembler, data table compiler, and table template generator. 1390 1391 iASL: Added a requirement for Device() objects that one of either a _HID 1392 or _ADR must exist within the scope of a Device, as per the ACPI 1393 specification. Remove a similar requirement that was incorrectly in place 1394 for the _DSD object. 1395 1396 iASL: Added error detection for illegal named references within control 1397 methods that would cause runtime failures. Now trapped as errors are: 1) 1398 References to objects within a non-parent control method. 2) Forward 1399 references (within a method) -- for control methods, AML interpreters use 1400 a one-pass parse of control methods. ACPICA BZ 1008. 1401 1402 iASL: Added error checking for dependencies related to the _PSx power 1403 methods. ACPICA BZ 1029. 1404 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2, 1405 _PS3. 1406 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same 1407 scope. 1408 1409 iASL and table compiler: Cleanup miscellaneous memory leaks by fully 1410 deploying the existing object and string caches and adding new caches for 1411 the table compiler. 1412 1413 iASL: Split the huge parser source file into multiple subfiles to improve 1414 manageability. Generation now requires the M4 macro preprocessor, which 1415 is part of the Bison distribution on both unix and windows platforms. 1416 1417 AcpiSrc: Fixed and removed all extraneous warnings generated during 1418 entire ACPICA source code scan and/or conversion. 1419 1420 1421 ---------------------------------------- 1422 1423 24 July 2014. Summary of changes for version 20140724: 1424 1425 The ACPI 5.1 specification has been released and is available at: 1426 http://uefi.org/specs/access 1427 1428 1429 0) ACPI 5.1 support in ACPICA: 1430 1431 ACPI 5.1 is fully supported in ACPICA as of this release. 1432 1433 New predefined names. Support includes iASL and runtime ACPICA 1434 validation. 1435 _CCA (Cache Coherency Attribute). 1436 _DSD (Device-Specific Data). David Box. 1437 1438 Modifications to existing ACPI tables. Support includes headers, iASL 1439 Data Table compiler, disassembler, and the template generator. 1440 FADT - New fields and flags. Graeme Gregory. 1441 GTDT - One new subtable and new fields. Tomasz Nowicki. 1442 MADT - Two new subtables. Tomasz Nowicki. 1443 PCCT - One new subtable. 1444 1445 Miscellaneous. 1446 New notification type for System Resource Affinity change events. 1447 1448 1449 1) ACPICA kernel-resident subsystem: 1450 1451 Fixed a regression introduced in 20140627 where a fault can happen during 1452 the deletion of Alias AML namespace objects. The problem affected both 1453 the core ACPICA and the ACPICA tools including iASL and AcpiExec. 1454 1455 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a 1456 simple mechanism to enable wake GPEs that have no associated handler or 1457 control method. Rafael Wysocki. 1458 1459 Updated the AcpiEnableGpe interface to disallow the enable if there is no 1460 handler or control method associated with the particular GPE. This will 1461 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki. 1462 1463 Updated GPE handling and dispatch by disabling the GPE before clearing 1464 the status bit for edge-triggered GPEs. Lv Zheng. 1465 1466 Added Timer() support to the AML Debug object. The current timer value is 1467 now displayed with each invocation of (Store to) the debug object to 1468 enable simple generation of execution times for AML code (method 1469 execution for example.) ACPICA BZ 1093. 1470 1471 Example Code and Data Size: These are the sizes for the OS-independent 1472 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1473 debug version of the code includes the debug output trace mechanism and 1474 has a much larger code and data size. 1475 1476 Current Release: 1477 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total 1478 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 1479 Previous Release: 1480 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 1481 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 1482 1483 1484 2) iASL Compiler/Disassembler and Tools: 1485 1486 Fixed an issue with the recently added local printf implementation, 1487 concerning width/precision specifiers that could cause incorrect output. 1488 Lv Zheng. ACPICA BZ 1094. 1489 1490 Disassembler: Added support to detect buffers that contain UUIDs and 1491 disassemble them to an invocation of the ToUUID operator. Also emit 1492 commented descriptions of known ACPI-related UUIDs. 1493 1494 AcpiHelp: Added support to display known ACPI-related UUIDs. New option, 1495 -u. Adds three new files. 1496 1497 iASL: Update table compiler and disassembler for DMAR table changes that 1498 were introduced in September 2013. With assistance by David Woodhouse. 1499 1500 ---------------------------------------- 1501 27 June 2014. Summary of changes for version 20140627: 1502 1503 1) ACPICA kernel-resident subsystem: 1504 1505 Formatted Output: Implemented local versions of standard formatted output 1506 utilities such as printf, etc. Over time, it has been discovered that 1507 there are in fact many portability issues with printf, and the addition 1508 of this feature will fix/prevent these issues once and for all. Some 1509 known issues are summarized below: 1510 1511 1) Output of 64-bit values is not portable. For example, UINT64 is %ull 1512 for the Linux kernel and is %uI64 for some MSVC versions. 1513 2) Invoking printf consistently in a manner that is portable across both 1514 32-bit and 64-bit platforms is difficult at best in many situations. 1515 3) The output format for pointers varies from system to system (leading 1516 zeros especially), and leads to inconsistent output from ACPICA across 1517 platforms. 1518 4) Certain platform-specific printf formats may conflict with ACPICA use. 1519 5) If there is no local C library available, ACPICA now has local support 1520 for printf. 1521 1522 -- To address these printf issues in a complete manner, ACPICA now 1523 directly implements a small subset of printf format specifiers, only 1524 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng. 1525 1526 Implemented support for ACPICA generation within the EFI environment. 1527 Initially, the AcpiDump utility is supported in the UEFI shell 1528 environment. Lv Zheng. 1529 1530 Added a new external interface, AcpiLogError, to improve ACPICA 1531 portability. This allows the host to redirect error messages from the 1532 ACPICA utilities. Lv Zheng. 1533 1534 Added and deployed new OSL file I/O interfaces to improve ACPICA 1535 portability: 1536 AcpiOsOpenFile 1537 AcpiOsCloseFile 1538 AcpiOsReadFile 1539 AcpiOsWriteFile 1540 AcpiOsGetFileOffset 1541 AcpiOsSetFileOffset 1542 There are C library implementations of these functions in the new file 1543 service_layers/oslibcfs.c -- however, the functions can be implemented by 1544 the local host in any way necessary. Lv Zheng. 1545 1546 Implemented a mechanism to disable/enable ACPI table checksum validation 1547 at runtime. This can be useful when loading tables very early during OS 1548 initialization when it may not be possible to map the entire table in 1549 order to compute the checksum. Lv Zheng. 1550 1551 Fixed a buffer allocation issue for the Generic Serial Bus support. 1552 Originally, a fixed buffer length was used. This change allows for 1553 variable-length buffers based upon the protocol indicated by the field 1554 access attributes. Reported by Lan Tianyu. Lv Zheng. 1555 1556 Fixed a problem where an object detached from a namespace node was not 1557 properly terminated/cleared and could cause a circular list problem if 1558 reattached. ACPICA BZ 1063. David Box. 1559 1560 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick. 1561 1562 Fixed a possible memory leak in an error return path within the function 1563 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King. 1564 1565 Example Code and Data Size: These are the sizes for the OS-independent 1566 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1567 debug version of the code includes the debug output trace mechanism and 1568 has a much larger code and data size. 1569 1570 Current Release: 1571 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 1572 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 1573 Previous Release: 1574 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 1575 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 1576 1577 1578 2) iASL Compiler/Disassembler and Tools: 1579 1580 Disassembler: Add dump of ASCII equivalent text within a comment at the 1581 end of each line of the output for the Buffer() ASL operator. 1582 1583 AcpiDump: Miscellaneous changes: 1584 Fixed repetitive table dump in -n mode. 1585 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if 1586 the ACPI 2.0 GUID fails. 1587 1588 iASL: Fixed a problem where the compiler could fault if incorrectly given 1589 an acpidump output file as input. ACPICA BZ 1088. David Box. 1590 1591 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if 1592 they are invoked without any arguments. 1593 1594 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ 1595 1086. Colin Ian King. 1596 1597 Disassembler: Cleaned up a block of code that extracts a parent Op 1598 object. Added a comment that explains that the parent is guaranteed to be 1599 valid in this case. ACPICA BZ 1069. 1600 1601 1602 ---------------------------------------- 1603 24 April 2014. Summary of changes for version 20140424: 1604 1605 1) ACPICA kernel-resident subsystem: 1606 1607 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT. 1608 Some of these tables are known to contain a trailing NULL entry. Lv 1609 Zheng. 1610 1611 Removed an extraneous error message for the case where there are a large 1612 number of system GPEs (> 124). This was the "32-bit FADT register is too 1613 long to convert to GAS struct" message, which is irrelevant for GPEs 1614 since the GPEx_BLK_LEN fields of the FADT are always used instead of the 1615 (limited capacity) GAS bit length. Also, several changes to ensure proper 1616 support for GPE numbers > 255, where some "GPE number" fields were 8-bits 1617 internally. 1618 1619 Implemented and deployed additional configuration support for the public 1620 ACPICA external interfaces. Entire classes of interfaces can now be 1621 easily modified or configured out, replaced by stubbed inline functions 1622 by default. Lv Zheng. 1623 1624 Moved all public ACPICA runtime configuration globals to the public 1625 ACPICA external interface file for convenience. Also, removed some 1626 obsolete/unused globals. See the file acpixf.h. Lv Zheng. 1627 1628 Documentation: Added a new section to the ACPICA reference describing the 1629 maximum number of GPEs that can be supported by the FADT-defined GPEs in 1630 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA 1631 reference. 1632 1633 Example Code and Data Size: These are the sizes for the OS-independent 1634 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1635 debug version of the code includes the debug output trace mechanism and 1636 has a much larger code and data size. 1637 1638 Current Release: 1639 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 1640 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 1641 Previous Release: 1642 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 1643 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 1644 1645 1646 2) iASL Compiler/Disassembler and Tools: 1647 1648 iASL and disassembler: Add full support for the LPIT table (Low Power 1649 Idle Table). Includes support in the disassembler, data table compiler, 1650 and template generator. 1651 1652 AcpiDump utility: 1653 1) Add option to force the use of the RSDT (over the XSDT). 1654 2) Improve validation of the RSDP signature (use 8 chars instead of 4). 1655 1656 iASL: Add check for predefined packages that are too large. For 1657 predefined names that contain subpackages, check if each subpackage is 1658 too large. (Check for too small already exists.) 1659 1660 Debugger: Updated the GPE command (which simulates a GPE by executing the 1661 GPE code paths in ACPICA). The GPE device is now optional, and defaults 1662 to the GPE 0/1 FADT-defined blocks. 1663 1664 Unix application OSL: Update line-editing support. Add additional error 1665 checking and take care not to reset terminal attributes on exit if they 1666 were never set. This should help guarantee that the terminal is always 1667 left in the previous state on program exit. 1668 1669 1670 ---------------------------------------- 1671 25 March 2014. Summary of changes for version 20140325: 1672 1673 1) ACPICA kernel-resident subsystem: 1674 1675 Updated the auto-serialize feature for control methods. This feature 1676 automatically serializes all methods that create named objects in order 1677 to prevent runtime errors. The update adds support to ignore the 1678 currently executing AML SyncLevel when invoking such a method, in order 1679 to prevent disruption of any existing SyncLevel priorities that may exist 1680 in the AML code. Although the use of SyncLevels is relatively rare, this 1681 change fixes a regression where an AE_AML_MUTEX_ORDER exception can 1682 appear on some machines starting with the 20140214 release. 1683 1684 Added a new external interface to allow the host to install ACPI tables 1685 very early, before the namespace is even created. AcpiInstallTable gives 1686 the host additional flexibility for ACPI table management. Tables can be 1687 installed directly by the host as if they had originally appeared in the 1688 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables 1689 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along 1690 with additional internal restructuring and cleanup. See the ACPICA 1691 Reference for interface details. Lv Zheng. 1692 1693 Added validation of the checksum for all incoming dynamically loaded 1694 tables (via external interfaces or via AML Load/LoadTable operators). Lv 1695 Zheng. 1696 1697 Updated the use of the AcpiOsWaitEventsComplete interface during Notify 1698 and GPE handler removal. Restructured calls to eliminate possible race 1699 conditions. Lv Zheng. 1700 1701 Added a warning for the use/execution of the ASL/AML Unload (table) 1702 operator. This will help detect and identify machines that use this 1703 operator if and when it is ever used. This operator has never been seen 1704 in the field and the usage model and possible side-effects of the drastic 1705 runtime action of a full table removal are unknown. 1706 1707 Reverted the use of #pragma push/pop which was introduced in the 20140214 1708 release. It appears that push and pop are not implemented by enough 1709 compilers to make the use of this feature feasible for ACPICA at this 1710 time. However, these operators may be deployed in a future ACPICA 1711 release. 1712 1713 Added the missing EXPORT_SYMBOL macros for the install and remove SCI 1714 handler interfaces. 1715 1716 Source code generation: 1717 1) Disabled the use of the "strchr" macro for the gcc-specific 1718 generation. For some versions of gcc, this macro can periodically expose 1719 a compiler bug which in turn causes compile-time error(s). 1720 2) Added support for PPC64 compilation. Colin Ian King. 1721 1722 Example Code and Data Size: These are the sizes for the OS-independent 1723 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1724 debug version of the code includes the debug output trace mechanism and 1725 has a much larger code and data size. 1726 1727 Current Release: 1728 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 1729 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 1730 Previous Release: 1731 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 1732 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 1733 1734 1735 2) iASL Compiler/Disassembler and Tools: 1736 1737 Disassembler: Added several new features to improve the readability of 1738 the resulting ASL code. Extra information is emitted within comment 1739 fields in the ASL code: 1740 1) Known _HID/_CID values are decoded to descriptive text. 1741 2) Standard values for the Notify() operator are decoded to descriptive 1742 text. 1743 3) Target operands are expanded to full pathnames (in a comment) when 1744 possible. 1745 1746 Disassembler: Miscellaneous updates for extern() handling: 1747 1) Abort compiler if file specified by -fe option does not exist. 1748 2) Silence unnecessary warnings about argument count mismatches. 1749 3) Update warning messages concerning unresolved method externals. 1750 4) Emit "UnknownObj" keyword for externals whose type cannot be 1751 determined. 1752 1753 AcpiHelp utility: 1754 1) Added the -a option to display both the ASL syntax and the AML 1755 encoding for an input ASL operator. This effectively displays all known 1756 information about an ASL operator with one AcpiHelp invocation. 1757 2) Added substring match support (similar to a wildcard) for the -i 1758 (_HID/PNP IDs) option. 1759 1760 iASL/Disassembler: Since this tool does not yet support execution on big- 1761 endian machines, added detection of endianness and an error message if 1762 execution is attempted on big-endian. Support for big-endian within iASL 1763 is a feature that is on the ACPICA to-be-done list. 1764 1765 AcpiBin utility: 1766 1) Remove option to extract binary files from an acpidump; this function 1767 is made obsolete by the AcpiXtract utility. 1768 2) General cleanup of open files and allocated buffers. 1769 1770 1771 ---------------------------------------- 1772 14 February 2014. Summary of changes for version 20140214: 1773 1774 1) ACPICA kernel-resident subsystem: 1775 1776 Implemented a new mechanism to proactively prevent problems with ill- 1777 behaved reentrant control methods that create named ACPI objects. This 1778 behavior is illegal as per the ACPI specification, but is nonetheless 1779 frequently seen in the field. Previously, this could lead to an 1780 AE_ALREADY_EXISTS exception if the method was actually entered by more 1781 than one thread. This new mechanism detects such methods at table load 1782 time and marks them "serialized" to prevent reentrancy. A new global 1783 option, AcpiGbl_AutoSerializeMethods, has been added to disable this 1784 feature if desired. This mechanism and global option obsoletes and 1785 supersedes the previous AcpiGbl_SerializeAllMethods option. 1786 1787 Added the "Windows 2013" string to the _OSI support. ACPICA will now 1788 respond TRUE to _OSI queries with this string. It is the stated policy of 1789 ACPICA to add new strings to the _OSI support as soon as possible after 1790 they are defined. See the full ACPICA _OSI policy which has been added to 1791 the utilities/utosi.c file. 1792 1793 Hardened/updated the _PRT return value auto-repair code: 1794 1) Do not abort the repair on a single subpackage failure, continue to 1795 check all subpackages. 1796 2) Add check for the minimum subpackage length (4). 1797 3) Properly handle extraneous NULL package elements. 1798 1799 Added support to avoid the possibility of infinite loops when traversing 1800 object linked lists. Never allow an infinite loop, even in the face of 1801 corrupted object lists. 1802 1803 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma 1804 pack(pop) directives to ensure that the ACPICA headers are independent of 1805 compiler settings or other host headers. 1806 1807 Example Code and Data Size: These are the sizes for the OS-independent 1808 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1809 debug version of the code includes the debug output trace mechanism and 1810 has a much larger code and data size. 1811 1812 Current Release: 1813 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 1814 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 1815 Previous Release: 1816 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 1817 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 1818 1819 1820 2) iASL Compiler/Disassembler and Tools: 1821 1822 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The 1823 first reserved field was incorrectly forced to have a value of zero. This 1824 change correctly forces the field to have a value of one. ACPICA BZ 1081. 1825 1826 Debugger: Added missing support for the "Extra" and "Data" subobjects 1827 when displaying object data. 1828 1829 Debugger: Added support to display entire object linked lists when 1830 displaying object data. 1831 1832 iASL: Removed the obsolete -g option to obtain ACPI tables from the 1833 Windows registry. This feature has been superseded by the acpidump 1834 utility. 1835 1836 1837 ---------------------------------------- 1838 14 January 2014. Summary of changes for version 20140114: 1839 1840 1) ACPICA kernel-resident subsystem: 1841 1842 Updated all ACPICA copyrights and signons to 2014. Added the 2014 1843 copyright to all module headers and signons, including the standard Linux 1844 header. This affects virtually every file in the ACPICA core subsystem, 1845 iASL compiler, all ACPICA utilities, and the test suites. 1846 1847 Improved parameter validation for AcpiInstallGpeBlock. Added the 1848 following checks: 1849 1) The incoming device handle refers to type ACPI_TYPE_DEVICE. 1850 2) There is not already a GPE block attached to the device. 1851 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a 1852 device. 1853 1854 Correctly support "references" in the ACPI_OBJECT. This change fixes the 1855 support to allow references (namespace nodes) to be passed as arguments 1856 to control methods via the evaluate object interface. This is probably 1857 most useful for testing purposes, however. 1858 1859 Improved support for 32/64 bit physical addresses in printf()-like 1860 output. This change improves the support for physical addresses in printf 1861 debug statements and other output on both 32-bit and 64-bit hosts. It 1862 consistently outputs the appropriate number of bytes for each host. The 1863 %p specifier is unsatisfactory since it does not emit uniform output on 1864 all hosts/clib implementations (on some, leading zeros are not supported, 1865 leading to difficult-to-read output). 1866 1867 Example Code and Data Size: These are the sizes for the OS-independent 1868 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1869 debug version of the code includes the debug output trace mechanism and 1870 has a much larger code and data size. 1871 1872 Current Release: 1873 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 1874 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 1875 Previous Release: 1876 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 1877 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 1878 1879 1880 2) iASL Compiler/Disassembler and Tools: 1881 1882 iASL: Fix a possible fault when using the Connection() operator. Fixes a 1883 problem if the parent Field definition for the Connection operator refers 1884 to an operation region that does not exist. ACPICA BZ 1064. 1885 1886 AcpiExec: Load of local test tables is now optional. The utility has the 1887 capability to load some various tables to test features of ACPICA. 1888 However, there are enough of them that the output of the utility became 1889 confusing. With this change, only the required local tables are displayed 1890 (RSDP, XSDT, etc.) along with the actual tables loaded via the command 1891 line specification. This makes the default output simler and easier to 1892 understand. The -el command line option restores the original behavior 1893 for testing purposes. 1894 1895 AcpiExec: Added support for overlapping operation regions. This change 1896 expands the simulation of operation regions by supporting regions that 1897 overlap within the given address space. Supports SystemMemory and 1898 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031. 1899 1900 AcpiExec: Added region handler support for PCI_Config and EC spaces. This 1901 allows AcpiExec to simulate these address spaces, similar to the current 1902 support for SystemMemory and SystemIO. 1903 1904 Debugger: Added new command to read/write/compare all namespace objects. 1905 The command "test objects" will exercise the entire namespace by writing 1906 new values to each data object, and ensuring that the write was 1907 successful. The original value is then restored and verified. 1908 1909 Debugger: Added the "test predefined" command. This change makes this 1910 test public and puts it under the new "test" command. The test executes 1911 each and every predefined name within the current namespace. 1912 1913 1914 ---------------------------------------- 1915 18 December 2013. Summary of changes for version 20131218: 1916 1917 Global note: The ACPI 5.0A specification was released this month. There 1918 are no changes needed for ACPICA since this release of ACPI is an 1919 errata/clarification release. The specification is available at 1920 acpi.info. 1921 1922 1923 1) ACPICA kernel-resident subsystem: 1924 1925 Added validation of the XSDT root table if it is present. Some older 1926 platforms contain an XSDT that is ill-formed or otherwise invalid (such 1927 as containing some or all entries that are NULL pointers). This change 1928 adds a new function to validate the XSDT before actually using it. If the 1929 XSDT is found to be invalid, ACPICA will now automatically fall back to 1930 using the RSDT instead. Original implementation by Zhao Yakui. Ported to 1931 ACPICA and enhanced by Lv Zheng and Bob Moore. 1932 1933 Added a runtime option to ignore the XSDT and force the use of the RSDT. 1934 This change adds a runtime option that will force ACPICA to use the RSDT 1935 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec 1936 requires that an XSDT be used instead of the RSDT, the XSDT has been 1937 found to be corrupt or ill-formed on some machines. Lv Zheng. 1938 1939 Added a runtime option to favor 32-bit FADT register addresses over the 1940 64-bit addresses. This change adds an option to favor 32-bit FADT 1941 addresses when there is a conflict between the 32-bit and 64-bit versions 1942 of the same register. The default behavior is to use the 64-bit version 1943 in accordance with the ACPI specification. This can now be overridden via 1944 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng. 1945 1946 During the change above, the internal "Convert FADT" and "Verify FADT" 1947 functions have been merged to simplify the code, making it easier to 1948 understand and maintain. ACPICA BZ 933. 1949 1950 Improve exception reporting and handling for GPE block installation. 1951 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the 1952 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019. 1953 1954 Added helper macros to extract bus/segment numbers from the HEST table. 1955 This change adds two macros to extract the encoded bus and segment 1956 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT. 1957 Betty Dall <betty.dall (a] hp.com> 1958 1959 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used 1960 by ACPICA. It is not a public macro, so it should have no effect on 1961 existing OSV code. Lv Zheng. 1962 1963 Example Code and Data Size: These are the sizes for the OS-independent 1964 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1965 debug version of the code includes the debug output trace mechanism and 1966 has a much larger code and data size. 1967 1968 Current Release: 1969 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 1970 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 1971 Previous Release: 1972 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 1973 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 1974 1975 1976 2) iASL Compiler/Disassembler and Tools: 1977 1978 Disassembler: Improved pathname support for emitted External() 1979 statements. This change adds full pathname support for external names 1980 that have been resolved internally by the inclusion of additional ACPI 1981 tables (via the iASL -e option). Without this change, the disassembler 1982 can emit multiple externals for the same object, or it become confused 1983 when the Scope() operator is used on an external object. Overall, greatly 1984 improves the ability to actually recompile the emitted ASL code when 1985 objects a referenced across multiple ACPI tables. Reported by Michael 1986 Tsirkin (mst (a] redhat.com). 1987 1988 Tests/ASLTS: Updated functional control suite to execute with no errors. 1989 David Box. Fixed several errors related to the testing of the interpreter 1990 slack mode. Lv Zheng. 1991 1992 iASL: Added support to detect names that are declared within a control 1993 method, but are unused (these are temporary names that are only valid 1994 during the time the method is executing). A remark is issued for these 1995 cases. ACPICA BZ 1022. 1996 1997 iASL: Added full support for the DBG2 table. Adds full disassembler, 1998 table compiler, and template generator support for the DBG2 table (Debug 1999 Port 2 table). 2000 2001 iASL: Added full support for the PCCT table, update the table definition. 2002 Updates the PCCT table definition in the actbl3.h header and adds table 2003 compiler and template generator support. 2004 2005 iASL: Added an option to emit only error messages (no warnings/remarks). 2006 The -ve option will enable only error messages, warnings and remarks are 2007 suppressed. This can simplify debugging when only the errors are 2008 important, such as when an ACPI table is disassembled and there are many 2009 warnings and remarks -- but only the actual errors are of real interest. 2010 2011 Example ACPICA code (source/tools/examples): Updated the example code so 2012 that it builds to an actual working program, not just example code. Added 2013 ACPI tables and execution of an example control method in the DSDT. Added 2014 makefile support for Unix generation. 2015 2016 2017 ---------------------------------------- 2018 15 November 2013. Summary of changes for version 20131115: 2019 2020 This release is available at https://acpica.org/downloads 2021 2022 2023 1) ACPICA kernel-resident subsystem: 2024 2025 Resource Manager: Fixed loop termination for the "get AML length" 2026 function. The loop previously had an error termination on a NULL resource 2027 pointer, which can never happen since the loop simply increments a valid 2028 resource pointer. This fix changes the loop to terminate with an error on 2029 an invalid end-of-buffer condition. The problem can be seen as an 2030 infinite loop by callers to AcpiSetCurrentResources with an invalid or 2031 corrupted resource descriptor, or a resource descriptor that is missing 2032 an END_TAG descriptor. Reported by Dan Carpenter 2033 <dan.carpenter (a] oracle.com>. Lv Zheng, Bob Moore. 2034 2035 Table unload and ACPICA termination: Delete all attached data objects 2036 during namespace node deletion. This fix updates namespace node deletion 2037 to delete the entire list of attached objects (attached via 2038 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ 2039 1024. Tomasz Nowicki (tomasz.nowicki (a] linaro.org). 2040 2041 ACPICA termination: Added support to delete all objects attached to the 2042 root namespace node. This fix deletes any and all objects that have been 2043 attached to the root node via AcpiAttachData. Previously, none of these 2044 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026. 2045 2046 Debug output: Do not emit the function nesting level for the in-kernel 2047 build. The nesting level is really only useful during a single-thread 2048 execution. Therefore, only enable this output for the AcpiExec utility. 2049 Also, only emit the thread ID when executing under AcpiExec (Context 2050 switches are still always detected and a message is emitted). ACPICA BZ 2051 972. 2052 2053 Example Code and Data Size: These are the sizes for the OS-independent 2054 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2055 debug version of the code includes the debug output trace mechanism and 2056 has a much larger code and data size. 2057 2058 Current Release: 2059 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 2060 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 2061 Previous Release: 2062 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 2063 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 2064 2065 2066 2) iASL Compiler/Disassembler and Tools: 2067 2068 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the 2069 correct portable POSIX header for terminal control functions. 2070 2071 Disassembler: Fixed control method invocation issues related to the use 2072 of the CondRefOf() operator. The problem is seen in the disassembly where 2073 control method invocations may not be disassembled properly if the 2074 control method name has been used previously as an argument to CondRefOf. 2075 The solution is to not attempt to emit an external declaration for the 2076 CondRefOf target (it is not necessary in the first place). This prevents 2077 disassembler object type confusion. ACPICA BZ 988. 2078 2079 Unix Makefiles: Added an option to disable compiler optimizations and the 2080 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA 2081 with optimizations (reportedly, gcc 4.4 for example). This change adds a 2082 command line option for make (NOOPT) that disables all compiler 2083 optimizations and the _FORTIFY_SOURCE compiler flag. The default 2084 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ 2085 1034. Lv Zheng, Bob Moore. 2086 2087 Tests/ASLTS: Added options to specify individual test cases and modes. 2088 This allows testers running aslts.sh to optionally specify individual 2089 test modes and test cases. Also added an option to disable the forced 2090 generation of the ACPICA tools from source if desired. Lv Zheng. 2091 2092 ---------------------------------------- 2093 27 September 2013. Summary of changes for version 20130927: 2094 2095 This release is available at https://acpica.org/downloads 2096 2097 2098 1) ACPICA kernel-resident subsystem: 2099 2100 Fixed a problem with store operations to reference objects. This change 2101 fixes a problem where a Store operation to an ArgX object that contained 2102 a 2103 reference to a field object did not complete the automatic dereference 2104 and 2105 then write to the actual field object. Instead, the object type of the 2106 field object was inadvertently changed to match the type of the source 2107 operand. The new behavior will actually write to the field object (buffer 2108 field or field unit), thus matching the correct ACPI-defined behavior. 2109 2110 Implemented support to allow the host to redefine individual OSL 2111 prototypes. This change enables the host to redefine OSL prototypes found 2112 in the acpiosxf.h file. This allows the host to implement OSL interfaces 2113 with a macro or inlined function. Further, it allows the host to add any 2114 additional required modifiers such as __iomem, __init, __exit, etc., as 2115 necessary on a per-interface basis. Enables maximum flexibility for the 2116 OSL interfaces. Lv Zheng. 2117 2118 Hardcoded the access width for the FADT-defined reset register. The ACPI 2119 specification requires the reset register width to be 8 bits. ACPICA now 2120 hardcodes the width to 8 and ignores the FADT width value. This provides 2121 compatibility with other ACPI implementations that have allowed BIOS code 2122 with bad register width values to go unnoticed. Matthew Garett, Bob 2123 Moore, 2124 Lv Zheng. 2125 2126 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is 2127 used 2128 in the OSL header (acpiosxf). The change modifies the position of this 2129 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid 2130 build issues if the OSL defines the implementation of the interface to be 2131 an inline stub function. Lv Zheng. 2132 2133 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA 2134 initialization interfaces. This change adds a new macro for the main init 2135 and terminate external interfaces in order to support hosts that require 2136 additional or different processing for these functions. Changed from 2137 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv 2138 Zheng, Bob Moore. 2139 2140 Cleaned up the memory allocation macros for configurability. In the 2141 common 2142 case, the ACPI_ALLOCATE and related macros now resolve directly to their 2143 respective AcpiOs* OSL interfaces. Two options: 2144 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by 2145 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define. 2146 2) For AcpiExec (and for debugging), the macros can optionally be 2147 resolved 2148 to the local ACPICA interfaces that track each allocation (local tracking 2149 is used to immediately detect memory leaks). 2150 Lv Zheng. 2151 2152 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel 2153 to predefine this macro to either TRUE or FALSE during the system build. 2154 2155 Replaced __FUNCTION_ with __func__ in the gcc-specific header. 2156 2157 Example Code and Data Size: These are the sizes for the OS-independent 2158 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2159 debug version of the code includes the debug output trace mechanism and 2160 has a much larger code and data size. 2161 2162 Current Release: 2163 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 2164 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 2165 Previous Release: 2166 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 2167 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 2168 2169 2170 2) iASL Compiler/Disassembler and Tools: 2171 2172 iASL: Implemented wildcard support for the -e option. This simplifies use 2173 when there are many SSDTs that must be included to resolve external 2174 method 2175 declarations. ACPICA BZ 1041. Example: 2176 iasl -e ssdt*.dat -d dsdt.dat 2177 2178 AcpiExec: Add history/line-editing for Unix/Linux systems. This change 2179 adds a portable module that implements full history and limited line 2180 editing for Unix and Linux systems. It does not use readline() due to 2181 portability issues. Instead it uses the POSIX termio interface to put the 2182 terminal in raw input mode so that the various special keys can be 2183 trapped 2184 (such as up/down-arrow for history support and left/right-arrow for line 2185 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036. 2186 2187 AcpiXtract: Add support to handle (ignore) "empty" lines containing only 2188 one or more spaces. This provides compatible with early or different 2189 versions of the AcpiDump utility. ACPICA BZ 1044. 2190 2191 AcpiDump: Do not ignore tables that contain only an ACPI table header. 2192 Apparently, some BIOSs create SSDTs that contain an ACPI table header but 2193 no other data. This change adds support to dump these tables. Any tables 2194 shorter than the length of an ACPI table header remain in error (an error 2195 message is emitted). Reported by Yi Li. 2196 2197 Debugger: Echo actual command along with the "unknown command" message. 2198 2199 ---------------------------------------- 2200 23 August 2013. Summary of changes for version 20130823: 2201 2202 1) ACPICA kernel-resident subsystem: 2203 2204 Implemented support for host-installed System Control Interrupt (SCI) 2205 handlers. Certain ACPI functionality requires the host to handle raw 2206 SCIs. For example, the "SCI Doorbell" that is defined for memory power 2207 state support requires the host device driver to handle SCIs to examine 2208 if the doorbell has been activated. Multiple SCI handlers can be 2209 installed to allow for future expansion. New external interfaces are 2210 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for 2211 details. Lv Zheng, Bob Moore. ACPICA BZ 1032. 2212 2213 Operation region support: Never locally free the handler "context" 2214 pointer. This change removes some dangerous code that attempts to free 2215 the handler context pointer in some (rare) circumstances. The owner of 2216 the handler owns this pointer and the ACPICA code should never touch it. 2217 Although not seen to be an issue in any kernel, it did show up as a 2218 problem (fault) under AcpiExec. Also, set the internal storage field for 2219 the context pointer to zero when the region is deactivated, simply for 2220 sanity. David Box. ACPICA BZ 1039. 2221 2222 AcpiRead: On error, do not modify the return value target location. If an 2223 error happens in the middle of a split 32/32 64-bit I/O operation, do not 2224 modify the target of the return value pointer. Makes the code consistent 2225 with the rest of ACPICA. Bjorn Helgaas. 2226 2227 Example Code and Data Size: These are the sizes for the OS-independent 2228 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2229 debug version of the code includes the debug output trace mechanism and 2230 has a much larger code and data size. 2231 2232 Current Release: 2233 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 2234 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 2235 Previous Release: 2236 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 2237 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total 2238 2239 2240 2) iASL Compiler/Disassembler and Tools: 2241 2242 AcpiDump: Implemented several new features and fixed some problems: 2243 1) Added support to dump the RSDP, RSDT, and XSDT tables. 2244 2) Added support for multiple table instances (SSDT, UEFI). 2245 3) Added option to dump "customized" (overridden) tables (-c). 2246 4) Fixed a problem where some table filenames were improperly 2247 constructed. 2248 5) Improved some error messages, removed some unnecessary messages. 2249 2250 iASL: Implemented additional support for disassembly of ACPI tables that 2251 contain invocations of external control methods. The -fe<file> option 2252 allows the import of a file that specifies the external methods along 2253 with the required number of arguments for each -- allowing for the 2254 correct disassembly of the table. This is a workaround for a limitation 2255 of AML code where the disassembler often cannot determine the number of 2256 arguments required for an external control method and generates incorrect 2257 ASL code. See the iASL reference for details. ACPICA BZ 1030. 2258 2259 Debugger: Implemented a new command (paths) that displays the full 2260 pathnames (namepaths) and object types of all objects in the namespace. 2261 This is an alternative to the namespace command. 2262 2263 Debugger: Implemented a new command (sci) that invokes the SCI dispatch 2264 mechanism and any installed handlers. 2265 2266 iASL: Fixed a possible segfault for "too many parent prefixes" condition. 2267 This can occur if there are too many parent prefixes in a namepath (for 2268 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035. 2269 2270 Application OSLs: Set the return value for the PCI read functions. These 2271 functions simply return AE_OK, but should set the return value to zero 2272 also. This change implements this. ACPICA BZ 1038. 2273 2274 Debugger: Prevent possible command line buffer overflow. Increase the 2275 size of a couple of the debugger line buffers, and ensure that overflow 2276 cannot happen. ACPICA BZ 1037. 2277 2278 iASL: Changed to abort immediately on serious errors during the parsing 2279 phase. Due to the nature of ASL, there is no point in attempting to 2280 compile these types of errors, and they typically end up causing a 2281 cascade of hundreds of errors which obscure the original problem. 2282 2283 ---------------------------------------- 2284 25 July 2013. Summary of changes for version 20130725: 2285 2286 1) ACPICA kernel-resident subsystem: 2287 2288 Fixed a problem with the DerefOf operator where references to FieldUnits 2289 and BufferFields incorrectly returned the parent object, not the actual 2290 value of the object. After this change, a dereference of a FieldUnit 2291 reference results in a read operation on the field to get the value, and 2292 likewise, the appropriate BufferField value is extracted from the target 2293 buffer. 2294 2295 Fixed a problem where the _WAK method could cause a fault under these 2296 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK 2297 method returned no value. The problem is rarely seen because most kernels 2298 run ACPICA in slack mode. 2299 2300 For the DerefOf operator, a fatal error now results if an attempt is made 2301 to dereference a reference (created by the Index operator) to a NULL 2302 package element. Provides compatibility with other ACPI implementations, 2303 and this behavior will be added to a future version of the ACPI 2304 specification. 2305 2306 The ACPI Power Management Timer (defined in the FADT) is now optional. 2307 This provides compatibility with other ACPI implementations and will 2308 appear in the next version of the ACPI specification. If there is no PM 2309 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of 2310 zero in the FADT indicates no PM timer. 2311 2312 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This 2313 allows the host to globally enable/disable all vendor strings, all 2314 feature strings, or both. Intended to be primarily used for debugging 2315 purposes only. Lv Zheng. 2316 2317 Expose the collected _OSI data to the host via a global variable. This 2318 data tracks the highest level vendor ID that has been invoked by the BIOS 2319 so that the host (and potentially ACPICA itself) can change behaviors 2320 based upon the age of the BIOS. 2321 2322 Example Code and Data Size: These are the sizes for the OS-independent 2323 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2324 debug version of the code includes the debug output trace mechanism and 2325 has a much larger code and data size. 2326 2327 Current Release: 2328 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 2329 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 2330 Previous Release: 2331 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 2332 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 2333 2334 2335 2) iASL Compiler/Disassembler and Tools: 2336 2337 iASL: Created the following enhancements for the -so option (create 2338 offset table): 2339 1)Add offsets for the last nameseg in each namepath for every supported 2340 object type 2341 2)Add support for Processor, Device, Thermal Zone, and Scope objects 2342 3)Add the actual AML opcode for the parent object of every supported 2343 object type 2344 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects 2345 2346 Disassembler: Emit all unresolved external symbols in a single block. 2347 These are external references to control methods that could not be 2348 resolved, and thus, the disassembler had to make a guess at the number of 2349 arguments to parse. 2350 2351 iASL: The argument to the -T option (create table template) is now 2352 optional. If not specified, the default table is a DSDT, typically the 2353 most common case. 2354 2355 ---------------------------------------- 2356 26 June 2013. Summary of changes for version 20130626: 2357 2358 1) ACPICA kernel-resident subsystem: 2359 2360 Fixed an issue with runtime repair of the _CST object. Null or invalid 2361 elements were not always removed properly. Lv Zheng. 2362 2363 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the 2364 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device, 2365 the maximum number of GPEs is 1016. Use of multiple GPE block devices 2366 makes the system-wide number of GPEs essentially unlimited. 2367 2368 Example Code and Data Size: These are the sizes for the OS-independent 2369 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2370 debug version of the code includes the debug output trace mechanism and 2371 has a much larger code and data size. 2372 2373 Current Release: 2374 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 2375 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 2376 Previous Release: 2377 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 2378 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 2379 2380 2381 2) iASL Compiler/Disassembler and Tools: 2382 2383 Portable AcpiDump: Implemented full support for the Linux and FreeBSD 2384 hosts. Now supports Linux, FreeBSD, and Windows. 2385 2386 Disassembler: Added some missing types for the HEST and EINJ tables: "Set 2387 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline". 2388 2389 iASL/Preprocessor: Implemented full support for nested 2390 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks. 2391 2392 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes 2393 max. The original purpose of this constraint was to limit the amount of 2394 debug output. However, the string function in question (UtPrintString) is 2395 now used for the disassembler also, where 256 bytes is insufficient. 2396 Reported by RehabMan@GitHub. 2397 2398 iASL/DataTables: Fixed some problems and issues with compilation of DMAR 2399 tables. ACPICA BZ 999. Lv Zheng. 2400 2401 iASL: Fixed a couple of error exit issues that could result in a "Could 2402 not delete <file>" message during ASL compilation. 2403 2404 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though 2405 the actual signatures for these tables are "FACP" and "APIC", 2406 respectively. 2407 2408 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI 2409 tables are allowed to have multiple instances. 2410 2411 ---------------------------------------- 2412 17 May 2013. Summary of changes for version 20130517: 2413 2414 1) ACPICA kernel-resident subsystem: 2415 2416 Fixed a regression introduced in version 20130328 for _INI methods. This 2417 change fixes a problem introduced in 20130328 where _INI methods are no 2418 longer executed properly because of a memory block that was not 2419 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki 2420 <tomasz.nowicki (a] linaro.org>. 2421 2422 Fixed a possible problem with the new extended sleep registers in the 2423 ACPI 2424 5.0 FADT. Do not use these registers (even if populated) unless the HW- 2425 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ 2426 1020. Lv Zheng. 2427 2428 Implemented return value repair code for _CST predefined objects: Sort 2429 the 2430 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng. 2431 2432 Implemented a debug-only option to disable loading of SSDTs from the 2433 RSDT/XSDT during ACPICA initialization. This can be useful for debugging 2434 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in 2435 acglobal.h - ACPICA BZ 1005. Lv Zheng. 2436 2437 Fixed some issues in the ACPICA initialization and termination code: 2438 Tomasz Nowicki <tomasz.nowicki (a] linaro.org> 2439 1) Clear events initialized flag upon event component termination. ACPICA 2440 BZ 1013. 2441 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018. 2442 3) Delete global lock pending lock during termination. ACPICA BZ 1012. 2443 4) Clear debug buffer global on termination to prevent possible multiple 2444 delete. ACPICA BZ 1010. 2445 2446 Standardized all switch() blocks across the entire source base. After 2447 many 2448 years, different formatting for switch() had crept in. This change makes 2449 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan. 2450 2451 Split some files to enhance ACPICA modularity and configurability: 2452 1) Split buffer dump routines into utilities/utbuffer.c 2453 2) Split internal error message routines into utilities/uterror.c 2454 3) Split table print utilities into tables/tbprint.c 2455 4) Split iASL command-line option processing into asloptions.c 2456 2457 Makefile enhancements: 2458 1) Support for all new files above. 2459 2) Abort make on errors from any subcomponent. Chao Guan. 2460 3) Add build support for Apple Mac OS X. Liang Qi. 2461 2462 Example Code and Data Size: These are the sizes for the OS-independent 2463 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2464 debug version of the code includes the debug output trace mechanism and 2465 has a much larger code and data size. 2466 2467 Current Release: 2468 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 2469 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 2470 Previous Release: 2471 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 2472 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 2473 2474 2475 2) iASL Compiler/Disassembler and Tools: 2476 2477 New utility: Implemented an easily portable version of the acpidump 2478 utility to extract ACPI tables from the system (or a file) in an ASCII 2479 hex 2480 dump format. The top-level code implements the various command line 2481 options, file I/O, and table dump routines. To port to a new host, only 2482 three functions need to be implemented to get tables -- since this 2483 functionality is OS-dependent. See the tools/acpidump/apmain.c module and 2484 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes: 2485 1) The Windows version obtains the ACPI tables from the Registry. 2486 2) The Linux version is under development. 2487 3) Other hosts - If an OS-dependent module is submitted, it will be 2488 distributed with ACPICA. 2489 2490 iASL: Fixed a regression for -D preprocessor option (define symbol). A 2491 restructuring/change to the initialization sequence caused this option to 2492 no longer work properly. 2493 2494 iASL: Implemented a mechanism to disable specific warnings and remarks. 2495 Adds a new command line option, "-vw <messageid> as well as "#pragma 2496 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore. 2497 2498 iASL: Fix for too-strict package object validation. The package object 2499 validation for return values from the predefined names is a bit too 2500 strict, it does not allow names references within the package (which will 2501 be resolved at runtime.) These types of references cannot be validated at 2502 compile time. This change ignores named references within package objects 2503 for names that return or define static packages. 2504 2505 Debugger: Fixed the 80-character command line limitation for the History 2506 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan. 2507 2508 iASL: Added control method and package support for the -so option 2509 (generates AML offset table for BIOS support.) 2510 2511 iASL: issue a remark if a non-serialized method creates named objects. If 2512 a thread blocks within the method for any reason, and another thread 2513 enters the method, the method will fail because an attempt will be made 2514 to 2515 create the same (named) object twice. In this case, issue a remark that 2516 the method should be marked serialized. NOTE: may become a warning later. 2517 ACPICA BZ 909. 2518 2519 ---------------------------------------- 2520 18 April 2013. Summary of changes for version 20130418: 2521 2522 1) ACPICA kernel-resident subsystem: 2523 2524 Fixed a possible buffer overrun during some rare but specific field unit 2525 read operations. This overrun can only happen if the DSDT version is 1 -- 2526 meaning that all AML integers are 32 bits -- and the field length is 2527 between 33 and 55 bits long. During the read, an internal buffer object 2528 is 2529 created for the field unit because the field is larger than an integer 2530 (32 2531 bits). However, in this case, the buffer will be incorrectly written 2532 beyond the end because the buffer length is less than the internal 2533 minimum 2534 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes 2535 long, but a full 8 bytes will be written. 2536 2537 Updated the Embedded Controller "orphan" _REG method support. This refers 2538 to _REG methods under the EC device that have no corresponding operation 2539 region. This is allowed by the ACPI specification. This update removes a 2540 dependency on the existence an ECDT table. It will execute an orphan _REG 2541 method as long as the operation region handler for the EC is installed at 2542 the EC device node and not the namespace root. Rui Zhang (original 2543 update), Bob Moore (update/integrate). 2544 2545 Implemented run-time argument typechecking for all predefined ACPI names 2546 (_STA, _BIF, etc.) This change performs object typechecking on all 2547 incoming arguments for all predefined names executed via 2548 AcpiEvaluateObject. This ensures that ACPI-related device drivers are 2549 passing correct object types as well as the correct number of arguments 2550 (therefore identifying any issues immediately). Also, the ASL/namespace 2551 definition of the predefined name is checked against the ACPI 2552 specification for the proper argument count. Adds one new file, 2553 nsarguments.c 2554 2555 Changed an exception code for the ASL UnLoad() operator. Changed the 2556 exception code for the case where the input DdbHandle is invalid, from 2557 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE. 2558 2559 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the 2560 global makefile. The use of this flag causes compiler errors on earlier 2561 versions of GCC, so it has been removed for compatibility. 2562 2563 Miscellaneous cleanup: 2564 1) Removed some unused/obsolete macros 2565 2) Fixed a possible memory leak in the _OSI support 2566 3) Removed an unused variable in the predefined name support 2567 4) Windows OSL: remove obsolete reference to a memory list field 2568 2569 Example Code and Data Size: These are the sizes for the OS-independent 2570 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2571 debug version of the code includes the debug output trace mechanism and 2572 has a much larger code and data size. 2573 2574 Current Release: 2575 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 2576 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 2577 Previous Release: 2578 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 2579 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 2580 2581 2582 2) iASL Compiler/Disassembler and Tools: 2583 2584 AcpiExec: Added installation of a handler for the SystemCMOS address 2585 space. This prevents control method abort if a method accesses this 2586 space. 2587 2588 AcpiExec: Added support for multiple EC devices, and now install EC 2589 operation region handler(s) at the actual EC device instead of the 2590 namespace root. This reflects the typical behavior of host operating 2591 systems. 2592 2593 AcpiExec: Updated to ensure that all operation region handlers are 2594 installed before the _REG methods are executed. This prevents a _REG 2595 method from aborting if it accesses an address space has no handler. 2596 AcpiExec installs a handler for every possible address space. 2597 2598 Debugger: Enhanced the "handlers" command to display non-root handlers. 2599 This change enhances the handlers command to display handlers associated 2600 with individual devices throughout the namespace, in addition to the 2601 currently supported display of handlers associated with the root 2602 namespace 2603 node. 2604 2605 ASL Test Suite: Several test suite errors have been identified and 2606 resolved, reducing the total error count during execution. Chao Guan. 2607 2608 ---------------------------------------- 2609 28 March 2013. Summary of changes for version 20130328: 2610 2611 1) ACPICA kernel-resident subsystem: 2612 2613 Fixed several possible race conditions with the internal object reference 2614 counting mechanism. Some of the external ACPICA interfaces update object 2615 reference counts without holding the interpreter or namespace lock. This 2616 change adds a spinlock to protect reference count updates on the internal 2617 ACPICA objects. Reported by and with assistance from Andriy Gapon 2618 (avg (a] FreeBSD.org). 2619 2620 FADT support: Removed an extraneous warning for very large GPE register 2621 sets. This change removes a size mismatch warning if the legacy length 2622 field for a GPE register set is larger than the 64-bit GAS structure can 2623 accommodate. GPE register sets can be larger than the 255-bit width 2624 limitation of the GAS structure. Linn Crosetto (linn (a] hp.com). 2625 2626 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error 2627 return from this interface. Handles a possible timeout case if 2628 ACPI_WAIT_FOREVER is modified by the host to be a value less than 2629 "forever". Jung-uk Kim. 2630 2631 Predefined name support: Add allowed/required argument type information 2632 to 2633 the master predefined info table. This change adds the infrastructure to 2634 enable typechecking on incoming arguments for all predefined 2635 methods/objects. It does not actually contain the code that will fully 2636 utilize this information, this is still under development. Also condenses 2637 some duplicate code for the predefined names into a new module, 2638 utilities/utpredef.c 2639 2640 Example Code and Data Size: These are the sizes for the OS-independent 2641 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2642 debug version of the code includes the debug output trace mechanism and 2643 has a much larger code and data size. 2644 2645 Previous Release: 2646 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 2647 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 2648 Current Release: 2649 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 2650 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 2651 2652 2653 2) iASL Compiler/Disassembler and Tools: 2654 2655 iASL: Implemented a new option to simplify the development of ACPI- 2656 related 2657 BIOS code. Adds support for a new "offset table" output file. The -so 2658 option will create a C table containing the AML table offsets of various 2659 named objects in the namespace so that BIOS code can modify them easily 2660 at 2661 boot time. This can simplify BIOS runtime code by eliminating expensive 2662 searches for "magic values", enhancing boot times and adding greater 2663 reliability. With assistance from Lee Hamel. 2664 2665 iASL: Allow additional predefined names to return zero-length packages. 2666 Now, all predefined names that are defined by the ACPI specification to 2667 return a "variable-length package of packages" are allowed to return a 2668 zero length top-level package. This allows the BIOS to tell the host that 2669 the requested feature is not supported, and supports existing BIOS/ASL 2670 code and practices. 2671 2672 iASL: Changed the "result not used" warning to an error. This is the case 2673 where an ASL operator is effectively a NOOP because the result of the 2674 operation is not stored anywhere. For example: 2675 Add (4, Local0) 2676 There is no target (missing 3rd argument), nor is the function return 2677 value used. This is potentially a very serious problem -- since the code 2678 was probably intended to do something, but for whatever reason, the value 2679 was not stored. Therefore, this issue has been upgraded from a warning to 2680 an error. 2681 2682 AcpiHelp: Added allowable/required argument types to the predefined names 2683 info display. This feature utilizes the recent update to the predefined 2684 names table (above). 2685 2686 ---------------------------------------- 2687 14 February 2013. Summary of changes for version 20130214: 2688 2689 1) ACPICA Kernel-resident Subsystem: 2690 2691 Fixed a possible regression on some hosts: Reinstated the safe return 2692 macros (return_ACPI_STATUS, etc.) that ensure that the argument is 2693 evaluated only once. Although these macros are not needed for the ACPICA 2694 code itself, they are often used by ACPI-related host device drivers 2695 where 2696 the safe feature may be necessary. 2697 2698 Fixed several issues related to the ACPI 5.0 reduced hardware support 2699 (SOC): Now ensure that if the platform declares itself as hardware- 2700 reduced 2701 via the FADT, the following functions become NOOPs (and always return 2702 AE_OK) because ACPI is always enabled by definition on these machines: 2703 AcpiEnable 2704 AcpiDisable 2705 AcpiHwGetMode 2706 AcpiHwSetMode 2707 2708 Dynamic Object Repair: Implemented additional runtime repairs for 2709 predefined name return values. Both of these repairs can simplify code in 2710 the related device drivers that invoke these methods: 2711 1) For the _STR and _MLS names, automatically repair/convert an ASCII 2712 string to a Unicode buffer. 2713 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with 2714 a 2715 lone end tag descriptor in the following cases: A Return(0) was executed, 2716 a null buffer was returned, or no object at all was returned (non-slack 2717 mode only). Adds a new file, nsconvert.c 2718 ACPICA BZ 998. Bob Moore, Lv Zheng. 2719 2720 Resource Manager: Added additional code to prevent possible infinite 2721 loops 2722 while traversing corrupted or ill-formed resource template buffers. Check 2723 for zero-length resource descriptors in all code that loops through 2724 resource templates (the length field is used to index through the 2725 template). This change also hardens the external AcpiWalkResources and 2726 AcpiWalkResourceBuffer interfaces. 2727 2728 Local Cache Manager: Enhanced the main data structure to eliminate an 2729 unnecessary mechanism to access the next object in the list. Actually 2730 provides a small performance enhancement for hosts that use the local 2731 ACPICA cache manager. Jung-uk Kim. 2732 2733 Example Code and Data Size: These are the sizes for the OS-independent 2734 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2735 debug version of the code includes the debug output trace mechanism and 2736 has a much larger code and data size. 2737 2738 Previous Release: 2739 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 2740 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 2741 Current Release: 2742 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 2743 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 2744 2745 2746 2) iASL Compiler/Disassembler and Tools: 2747 2748 iASL/Disassembler: Fixed several issues with the definition of the ACPI 2749 5.0 RASF table (RAS Feature Table). This change incorporates late changes 2750 that were made to the ACPI 5.0 specification. 2751 2752 iASL/Disassembler: Added full support for the following new ACPI tables: 2753 1) The MTMR table (MID Timer Table) 2754 2) The VRTC table (Virtual Real Time Clock Table). 2755 Includes header file, disassembler, table compiler, and template support 2756 for both tables. 2757 2758 iASL: Implemented compile-time validation of package objects returned by 2759 predefined names. This new feature validates static package objects 2760 returned by the various predefined names defined to return packages. Both 2761 object types and package lengths are validated, for both parent packages 2762 and sub-packages, if any. The code is similar in structure and behavior 2763 to 2764 the runtime repair mechanism within the AML interpreter and uses the 2765 existing predefined name information table. Adds a new file, aslprepkg.c. 2766 ACPICA BZ 938. 2767 2768 iASL: Implemented auto-detection of binary ACPI tables for disassembly. 2769 This feature detects a binary file with a valid ACPI table header and 2770 invokes the disassembler automatically. Eliminates the need to 2771 specifically invoke the disassembler with the -d option. ACPICA BZ 862. 2772 2773 iASL/Disassembler: Added several warnings for the case where there are 2774 unresolved control methods during the disassembly. This can potentially 2775 cause errors when the output file is compiled, because the disassembler 2776 assumes zero method arguments in these cases (it cannot determine the 2777 actual number of arguments without resolution/definition of the method). 2778 2779 Debugger: Added support to display all resources with a single command. 2780 Invocation of the resources command with no arguments will now display 2781 all 2782 resources within the current namespace. 2783 2784 AcpiHelp: Added descriptive text for each ACPICA exception code displayed 2785 via the -e option. 2786 2787 ---------------------------------------- 2788 17 January 2013. Summary of changes for version 20130117: 2789 2790 1) ACPICA Kernel-resident Subsystem: 2791 2792 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to 2793 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx 2794 objects to return a package containing one integer, most BIOS code 2795 returns 2796 two integers and the previous code reflects that. However, we also need 2797 to 2798 support BIOS code that actually implements to the ACPI spec, and this 2799 change reflects this. 2800 2801 Fixed two issues with the ACPI_DEBUG_PRINT macros: 2802 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for 2803 C compilers that require this support. 2804 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since 2805 ACPI_DEBUG is already used by many of the various hosts. 2806 2807 Updated all ACPICA copyrights and signons to 2013. Added the 2013 2808 copyright to all module headers and signons, including the standard Linux 2809 header. This affects virtually every file in the ACPICA core subsystem, 2810 iASL compiler, all ACPICA utilities, and the test suites. 2811 2812 Example Code and Data Size: These are the sizes for the OS-independent 2813 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2814 debug version of the code includes the debug output trace mechanism and 2815 has a much larger code and data size. 2816 2817 Previous Release: 2818 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 2819 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 2820 Current Release: 2821 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 2822 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 2823 2824 2825 2) iASL Compiler/Disassembler and Tools: 2826 2827 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and 2828 prevent a possible fault on some hosts. Some C libraries modify the arg 2829 pointer parameter to vfprintf making it difficult to call it twice in the 2830 AcpiOsVprintf function. Use a local buffer to workaround this issue. This 2831 does not affect the Windows OSL since the Win C library does not modify 2832 the arg pointer. Chao Guan, Bob Moore. 2833 2834 iASL: Fixed a possible infinite loop when the maximum error count is 2835 reached. If an output file other than the .AML file is specified (such as 2836 a listing file), and the maximum number of errors is reached, do not 2837 attempt to flush data to the output file(s) as the compiler is aborting. 2838 This can cause an infinite loop as the max error count code essentially 2839 keeps calling itself. 2840 2841 iASL/Disassembler: Added an option (-in) to ignore NOOP 2842 opcodes/operators. 2843 Implemented for both the compiler and the disassembler. Often, the NOOP 2844 opcode is used as padding for packages that are changed dynamically by 2845 the 2846 BIOS. When disassembled and recompiled, these NOOPs will cause syntax 2847 errors. This option causes the disassembler to ignore all NOOP opcodes 2848 (0xA3), and it also causes the compiler to ignore all ASL source code 2849 NOOP 2850 statements as well. 2851 2852 Debugger: Enhanced the Sleep command to execute all sleep states. This 2853 change allows Sleep to be invoked with no arguments and causes the 2854 debugger to execute all of the sleep states, 0-5, automatically. 2855 2856 ---------------------------------------- 2857 20 December 2012. Summary of changes for version 20121220: 2858 2859 1) ACPICA Kernel-resident Subsystem: 2860 2861 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an 2862 alternate entry point for AcpiWalkResources and improves the usability of 2863 the resource manager by accepting as input a buffer containing the output 2864 of either a _CRS, _PRS, or _AEI method. The key functionality is that the 2865 input buffer is not deleted by this interface so that it can be used by 2866 the host later. See the ACPICA reference for details. 2867 2868 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table 2869 (DSDT version < 2). The constant will be truncated and this warning 2870 reflects that behavior. 2871 2872 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ, 2873 ExtendedInterrupt, and GpioInt descriptors. This change adds support to 2874 both get and set the new wake bit in these descriptors, separately from 2875 the existing share bit. Reported by Aaron Lu. 2876 2877 Interpreter: Fix Store() when an implicit conversion is not possible. For 2878 example, in the cases such as a store of a string to an existing package 2879 object, implement the store as a CopyObject(). This is a small departure 2880 from the ACPI specification which states that the control method should 2881 be 2882 aborted in this case. However, the ASLTS suite depends on this behavior. 2883 2884 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT 2885 macros: check if debug output is currently enabled as soon as possible to 2886 minimize performance impact if debug is in fact not enabled. 2887 2888 Source code restructuring: Cleanup to improve modularity. The following 2889 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c, 2890 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c. 2891 Associated makefiles and project files have been updated. 2892 2893 Changed an exception code for LoadTable operator. For the case where one 2894 of the input strings is too long, change the returned exception code from 2895 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT. 2896 2897 Fixed a possible memory leak in dispatcher error path. On error, delete 2898 the mutex object created during method mutex creation. Reported by 2899 tim.gardner (a] canonical.com. 2900 2901 Example Code and Data Size: These are the sizes for the OS-independent 2902 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2903 debug version of the code includes the debug output trace mechanism and 2904 has a much larger code and data size. 2905 2906 Previous Release: 2907 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 2908 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2909 Current Release: 2910 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 2911 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 2912 2913 2914 2) iASL Compiler/Disassembler and Tools: 2915 2916 iASL: Disallow a method call as argument to the ObjectType ASL operator. 2917 This change tracks an errata to the ACPI 5.0 document. The AML grammar 2918 will not allow the interpreter to differentiate between a method and a 2919 method invocation when these are used as an argument to the ObjectType 2920 operator. The ACPI specification change is to disallow a method 2921 invocation 2922 (UserTerm) for the ObjectType operator. 2923 2924 Finish support for the TPM2 and CSRT tables in the headers, table 2925 compiler, and disassembler. 2926 2927 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout 2928 always expires immediately if the semaphore is not available. The 2929 original 2930 code was using a relative-time timeout, but sem_timedwait requires the 2931 use 2932 of an absolute time. 2933 2934 iASL: Added a remark if the Timer() operator is used within a 32-bit 2935 table. This operator returns a 64-bit time value that will be truncated 2936 within a 32-bit table. 2937 2938 iASL Source code restructuring: Cleanup to improve modularity. The 2939 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c, 2940 aslmethod.c, and aslfileio.c. Associated makefiles and project files have 2941 been updated. 2942 2943 2944 ---------------------------------------- 2945 14 November 2012. Summary of changes for version 20121114: 2946 2947 1) ACPICA Kernel-resident Subsystem: 2948 2949 Implemented a performance enhancement for ACPI/AML Package objects. This 2950 change greatly increases the performance of Package objects within the 2951 interpreter. It changes the processing of reference counts for packages 2952 by 2953 optimizing for the most common case where the package sub-objects are 2954 either Integers, Strings, or Buffers. Increases the overall performance 2955 of 2956 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by 2957 2X.) 2958 Chao Guan. ACPICA BZ 943. 2959 2960 Implemented and deployed common macros to extract flag bits from resource 2961 descriptors. Improves readability and maintainability of the code. Fixes 2962 a 2963 problem with the UART serial bus descriptor for the number of data bits 2964 flags (was incorrectly 2 bits, should be 3). 2965 2966 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation 2967 of the macros and changed the SETx macros to the style of (destination, 2968 source). Also added ACPI_CASTx companion macros. Lv Zheng. 2969 2970 Example Code and Data Size: These are the sizes for the OS-independent 2971 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2972 debug version of the code includes the debug output trace mechanism and 2973 has a much larger code and data size. 2974 2975 Previous Release: 2976 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 2977 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2978 Current Release: 2979 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 2980 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2981 2982 2983 2) iASL Compiler/Disassembler and Tools: 2984 2985 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change 2986 adds the ShareAndWake and ExclusiveAndWake flags which were added to the 2987 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986. 2988 2989 Disassembler: Fixed a problem with external declaration generation. Fixes 2990 a problem where an incorrect pathname could be generated for an external 2991 declaration if the original reference to the object includes leading 2992 carats (^). ACPICA BZ 984. 2993 2994 Debugger: Completed a major update for the Disassemble<method> command. 2995 This command was out-of-date and did not properly disassemble control 2996 methods that had any reasonable complexity. This fix brings the command 2997 up 2998 to the same level as the rest of the disassembler. Adds one new file, 2999 dmdeferred.c, which is existing code that is now common with the main 3000 disassembler and the debugger disassemble command. ACPICA MZ 978. 3001 3002 iASL: Moved the parser entry prototype to avoid a duplicate declaration. 3003 Newer versions of Bison emit this prototype, so moved the prototype out 3004 of 3005 the iASL header to where it is actually used in order to avoid a 3006 duplicate 3007 declaration. 3008 3009 iASL/Tools: Standardized use of the stream I/O functions: 3010 1) Ensure check for I/O error after every fopen/fread/fwrite 3011 2) Ensure proper order of size/count arguments for fread/fwrite 3012 3) Use test of (Actual != Requested) after all fwrite, and most fread 3013 4) Standardize I/O error messages 3014 Improves reliability and maintainability of the code. Bob Moore, Lv 3015 Zheng. 3016 ACPICA BZ 981. 3017 3018 Disassembler: Prevent duplicate External() statements. During generation 3019 of external statements, detect similar pathnames that are actually 3020 duplicates such as these: 3021 External (\ABCD) 3022 External (ABCD) 3023 Remove all leading '\' characters from pathnames during the external 3024 statement generation so that duplicates will be detected and tossed. 3025 ACPICA BZ 985. 3026 3027 Tools: Replace low-level I/O with stream I/O functions. Replace 3028 open/read/write/close with the stream I/O equivalents 3029 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob 3030 Moore. 3031 3032 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table 3033 name header so that AcpiXtract recognizes the output file/table. 3034 3035 iASL: Remove obsolete -2 option flag. Originally intended to force the 3036 compiler/disassembler into an ACPI 2.0 mode, this was never implemented 3037 and the entire concept is now obsolete. 3038 3039 ---------------------------------------- 3040 18 October 2012. Summary of changes for version 20121018: 3041 3042 3043 1) ACPICA Kernel-resident Subsystem: 3044 3045 Updated support for the ACPI 5.0 MPST table. Fixes some problems 3046 introduced by late changes to the table as it was added to the ACPI 5.0 3047 specification. Includes header, disassembler, and data table compiler 3048 support as well as a new version of the MPST template. 3049 3050 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI 3051 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID 3052 methods: _HID, _CID, and _UID. 3053 3054 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed 3055 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent 3056 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId) 3057 names for their various drivers. Affects the AcpiGetObjectInfo external 3058 interface, and other internal interfaces as well. 3059 3060 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME. 3061 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME 3062 on machines that support non-aligned transfers. Optimizes for this case 3063 rather than using a strncpy. With assistance from Zheng Lv. 3064 3065 Resource Manager: Small fix for buffer size calculation. Fixed a one byte 3066 error in the output buffer calculation. Feng Tang. ACPICA BZ 849. 3067 3068 Added a new debug print message for AML mutex objects that are force- 3069 released. At control method termination, any currently acquired mutex 3070 objects are force-released. Adds a new debug-only message for each one 3071 that is released. 3072 3073 Audited/updated all ACPICA return macros and the function debug depth 3074 counter: 1) Ensure that all functions that use the various TRACE macros 3075 also use the appropriate ACPICA return macros. 2) Ensure that all normal 3076 return statements surround the return expression (value) with parens to 3077 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng, 3078 Zheng Lv, Bob Moore. ACPICA Bugzilla 972. 3079 3080 Global source code changes/maintenance: All extra lines at the start and 3081 end of each source file have been removed for consistency. Also, within 3082 comments, all new sentences start with a single space instead of a double 3083 space, again for consistency across the code base. 3084 3085 Example Code and Data Size: These are the sizes for the OS-independent 3086 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3087 debug version of the code includes the debug output trace mechanism and 3088 has a much larger code and data size. 3089 3090 Previous Release: 3091 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 3092 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 3093 Current Release: 3094 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 3095 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 3096 3097 3098 2) iASL Compiler/Disassembler and Tools: 3099 3100 AcpiExec: Improved the algorithm used for memory leak/corruption 3101 detection. Added some intelligence to the code that maintains the global 3102 list of allocated memory. The list is now ordered by allocated memory 3103 address, significantly improving performance. When running AcpiExec on 3104 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending 3105 on the platform and/or the environment. Note, this performance 3106 enhancement affects the AcpiExec utility only, not the kernel-resident 3107 ACPICA code. 3108 3109 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For 3110 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix 3111 incorrect table offset reported for invalid opcodes. Report the original 3112 32-bit value for bad ACPI_NAMEs (as well as the repaired name.) 3113 3114 Disassembler: Enhanced the -vt option to emit the binary table data in 3115 hex format to assist with debugging. 3116 3117 Fixed a potential filename buffer overflow in osunixdir.c. Increased the 3118 size of file structure. Colin Ian King. 3119 3120 ---------------------------------------- 3121 13 September 2012. Summary of changes for version 20120913: 3122 3123 3124 1) ACPICA Kernel-resident Subsystem: 3125 3126 ACPI 5.0: Added two new notify types for the Hardware Error Notification 3127 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5) 3128 and 3129 MCE(6). 3130 3131 Table Manager: Merged/removed duplicate code in the root table resize 3132 functions. One function is external, the other is internal. Lv Zheng, 3133 ACPICA 3134 BZ 846. 3135 3136 Makefiles: Completely removed the obsolete "Linux" makefiles under 3137 acpica/generate/linux. These makefiles are obsolete and have been 3138 replaced 3139 by 3140 the generic unix makefiles under acpica/generate/unix. 3141 3142 Makefiles: Ensure that binary files always copied properly. Minor rule 3143 change 3144 to ensure that the final binary output files are always copied up to the 3145 appropriate binary directory (bin32 or bin64.) 3146 3147 Example Code and Data Size: These are the sizes for the OS-independent 3148 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3149 debug 3150 version of the code includes the debug output trace mechanism and has a 3151 much 3152 larger code and data size. 3153 3154 Previous Release: 3155 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 3156 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 3157 Current Release: 3158 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 3159 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 3160 3161 3162 2) iASL Compiler/Disassembler and Tools: 3163 3164 Disassembler: Fixed a possible fault during the disassembly of resource 3165 descriptors when a second parse is required because of the invocation of 3166 external control methods within the table. With assistance from 3167 adq (a] lidskialf.net. ACPICA BZ 976. 3168 3169 iASL: Fixed a namepath optimization problem. An error can occur if the 3170 parse 3171 node that contains the namepath to be optimized does not have a parent 3172 node 3173 that is a named object. This change fixes the problem. 3174 3175 iASL: Fixed a regression where the AML file is not deleted on errors. The 3176 AML 3177 output file should be deleted if there are any errors during the 3178 compiler. 3179 The 3180 only exception is if the -f (force output) option is used. ACPICA BZ 974. 3181 3182 iASL: Added a feature to automatically increase internal line buffer 3183 sizes. 3184 Via realloc(), automatically increase the internal line buffer sizes as 3185 necessary to support very long source code lines. The current version of 3186 the 3187 preprocessor requires a buffer long enough to contain full source code 3188 lines. 3189 This change increases the line buffer(s) if the input lines go beyond the 3190 current buffer size. This eliminates errors that occurred when a source 3191 code 3192 line was longer than the buffer. 3193 3194 iASL: Fixed a problem with constant folding in method declarations. The 3195 SyncLevel term is a ByteConstExpr, and incorrect code would be generated 3196 if a 3197 Type3 opcode was used. 3198 3199 Debugger: Improved command help support. For incorrect argument count, 3200 display 3201 full help for the command. For help command itself, allow an argument to 3202 specify a command. 3203 3204 Test Suites: Several bug fixes for the ASLTS suite reduces the number of 3205 errors during execution of the suite. Guan Chao. 3206 3207 ---------------------------------------- 3208 16 August 2012. Summary of changes for version 20120816: 3209 3210 3211 1) ACPICA Kernel-resident Subsystem: 3212 3213 Removed all use of the deprecated _GTS and _BFS predefined methods. The 3214 _GTS 3215 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially 3216 deprecated and will probably be removed from the ACPI specification. 3217 Windows 3218 does not invoke them, and reportedly never will. The final nail in the 3219 coffin 3220 is that the ACPI specification states that these methods must be run with 3221 interrupts off, which is not going to happen in a kernel interpreter. 3222 Note: 3223 Linux has removed all use of the methods also. It was discovered that 3224 invoking these functions caused failures on some machines, probably 3225 because 3226 they were never tested since Windows does not call them. Affects two 3227 external 3228 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng. 3229 ACPICA BZ 969. 3230 3231 Implemented support for complex bit-packed buffers returned from the _PLD 3232 (Physical Location of Device) predefined method. Adds a new external 3233 interface, AcpiDecodePldBuffer that parses the buffer into a more usable 3234 C 3235 structure. Note: C Bitfields cannot be used for this type of predefined 3236 structure since the memory layout of individual bitfields is not defined 3237 by 3238 the C language. In addition, there are endian concerns where a compiler 3239 will 3240 change the bitfield ordering based on the machine type. The new ACPICA 3241 interface eliminates these issues, and should be called after _PLD is 3242 executed. ACPICA BZ 954. 3243 3244 Implemented a change to allow a scope change to root (via "Scope (\)") 3245 during 3246 execution of module-level ASL code (code that is executed at table load 3247 time.) Lin Ming. 3248 3249 Added the Windows8/Server2012 string for the _OSI method. This change 3250 adds 3251 a 3252 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server 3253 2012. 3254 3255 Added header support for the new ACPI tables DBG2 (Debug Port Table Type 3256 2) 3257 and CSRT (Core System Resource Table). 3258 3259 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined 3260 names. This simplifies access to the buffers returned by these predefined 3261 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956. 3262 3263 GPE support: Removed an extraneous parameter from the various low-level 3264 internal GPE functions. Tang Feng. 3265 3266 Removed the linux makefiles from the unix packages. The generate/linux 3267 makefiles are obsolete and have been removed from the unix tarball 3268 release 3269 packages. The replacement makefiles are under generate/unix, and there is 3270 a 3271 top-level makefile under the main acpica directory. ACPICA BZ 967, 912. 3272 3273 Updates for Unix makefiles: 3274 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven. 3275 2) Update linker flags (move to end of command line) for AcpiExec 3276 utility. 3277 Guan Chao. 3278 3279 Split ACPICA initialization functions to new file, utxfinit.c. Split from 3280 utxface.c to improve modularity and reduce file size. 3281 3282 Example Code and Data Size: These are the sizes for the OS-independent 3283 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3284 debug version of the code includes the debug output trace mechanism and 3285 has a 3286 much larger code and data size. 3287 3288 Previous Release: 3289 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 3290 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 3291 Current Release: 3292 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 3293 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 3294 3295 3296 2) iASL Compiler/Disassembler and Tools: 3297 3298 iASL: Fixed a problem with constant folding for fixed-length constant 3299 expressions. The constant-folding code was not being invoked for constant 3300 expressions that allow the use of type 3/4/5 opcodes to generate 3301 constants 3302 for expressions such as ByteConstExpr, WordConstExpr, etc. This could 3303 result 3304 in the generation of invalid AML bytecode. ACPICA BZ 970. 3305 3306 iASL: Fixed a generation issue on newer versions of Bison. Newer versions 3307 apparently automatically emit some of the necessary externals. This 3308 change 3309 handles these versions in order to eliminate generation warnings. 3310 3311 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables. 3312 3313 Disassembler: Add support to decode _PLD buffers. The decoded buffer 3314 appears 3315 within comments in the output file. 3316 3317 Debugger: Fixed a regression with the "Threads" command where 3318 AE_BAD_PARAMETER was always returned. 3319 3320 ---------------------------------------- 3321 11 July 2012. Summary of changes for version 20120711: 3322 3323 1) ACPICA Kernel-resident Subsystem: 3324 3325 Fixed a possible fault in the return package object repair code. Fixes a 3326 problem that can occur when a lone package object is wrapped with an 3327 outer 3328 package object in order to force conformance to the ACPI specification. 3329 Can 3330 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, 3331 _DLM, 3332 _CSD, _PSD, _TSD. 3333 3334 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the 3335 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the 3336 ARB_DIS bit must be implemented in the host-dependent C3 processor power 3337 state 3338 support. Note, ARB_DIS is obsolete and only applies to older chipsets, 3339 both 3340 Intel and other vendors. (for Intel: ICH4-M and earlier) 3341 3342 This change removes the code to disable/enable bus master arbitration 3343 during 3344 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register 3345 causes 3346 resume problems on some machines. The change has been in use for over 3347 seven 3348 years within Linux. 3349 3350 Implemented two new external interfaces to support host-directed dynamic 3351 ACPI 3352 table load and unload. They are intended to simplify the host 3353 implementation 3354 of hot-plug support: 3355 AcpiLoadTable: Load an SSDT from a buffer into the namespace. 3356 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the 3357 table. 3358 See the ACPICA reference for additional details. Adds one new file, 3359 components/tables/tbxfload.c 3360 3361 Implemented and deployed two new interfaces for errors and warnings that 3362 are 3363 known to be caused by BIOS/firmware issues: 3364 AcpiBiosError: Prints "ACPI Firmware Error" message. 3365 AcpiBiosWarning: Prints "ACPI Firmware Warning" message. 3366 Deployed these new interfaces in the ACPICA Table Manager code for ACPI 3367 table 3368 and FADT errors. Additional deployment to be completed as appropriate in 3369 the 3370 future. The associated conditional macros are ACPI_BIOS_ERROR and 3371 ACPI_BIOS_WARNING. See the ACPICA reference for additional details. 3372 ACPICA 3373 BZ 3374 843. 3375 3376 Implicit notify support: ensure that no memory allocation occurs within a 3377 critical region. This fix moves a memory allocation outside of the time 3378 that a 3379 spinlock is held. Fixes issues on systems that do not allow this 3380 behavior. 3381 Jung-uk Kim. 3382 3383 Split exception code utilities and tables into a new file, 3384 utilities/utexcep.c 3385 3386 Example Code and Data Size: These are the sizes for the OS-independent 3387 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3388 debug 3389 version of the code includes the debug output trace mechanism and has a 3390 much 3391 larger code and data size. 3392 3393 Previous Release: 3394 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 3395 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 3396 Current Release: 3397 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 3398 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 3399 3400 3401 2) iASL Compiler/Disassembler and Tools: 3402 3403 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead 3404 of 3405 0. Jung-uk Kim. 3406 3407 Debugger: Enhanced the "tables" command to emit additional information 3408 about 3409 the current set of ACPI tables, including the owner ID and flags decode. 3410 3411 Debugger: Reimplemented the "unload" command to use the new 3412 AcpiUnloadParentTable external interface. This command was disable 3413 previously 3414 due to need for an unload interface. 3415 3416 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e 3417 option 3418 will decode 16-bit hex status codes (ACPI_STATUS) to name strings. 3419 3420 ---------------------------------------- 3421 20 June 2012. Summary of changes for version 20120620: 3422 3423 3424 1) ACPICA Kernel-resident Subsystem: 3425 3426 Implemented support to expand the "implicit notify" feature to allow 3427 multiple 3428 devices to be notified by a single GPE. This feature automatically 3429 generates a 3430 runtime device notification in the absence of a BIOS-provided GPE control 3431 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit 3432 notify is 3433 provided by ACPICA for Windows compatibility, and is a workaround for 3434 BIOS 3435 AML 3436 code errors. See the description of the AcpiSetupGpeForWake interface in 3437 the 3438 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 3439 3440 Changed some comments and internal function names to simplify and ensure 3441 correctness of the Linux code translation. No functional changes. 3442 3443 Example Code and Data Size: These are the sizes for the OS-independent 3444 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3445 debug 3446 version of the code includes the debug output trace mechanism and has a 3447 much 3448 larger code and data size. 3449 3450 Previous Release: 3451 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 3452 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 3453 Current Release: 3454 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 3455 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 3456 3457 3458 2) iASL Compiler/Disassembler and Tools: 3459 3460 Disassembler: Added support to emit short, commented descriptions for the 3461 ACPI 3462 predefined names in order to improve the readability of the disassembled 3463 output. ACPICA BZ 959. Changes include: 3464 1) Emit descriptions for all standard predefined names (_INI, _STA, 3465 _PRW, 3466 etc.) 3467 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 3468 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, 3469 etc.) 3470 3471 AcpiSrc: Fixed several long-standing Linux code translation issues. 3472 Argument 3473 descriptions in function headers are now translated properly to lower 3474 case 3475 and 3476 underscores. ACPICA BZ 961. Also fixes translation problems such as 3477 these: 3478 (old -> new) 3479 i_aSL -> iASL 3480 00-7_f -> 00-7F 3481 16_k -> 16K 3482 local_fADT -> local_FADT 3483 execute_oSI -> execute_OSI 3484 3485 iASL: Fixed a problem where null bytes were inadvertently emitted into 3486 some 3487 listing files. 3488 3489 iASL: Added the existing debug options to the standard help screen. There 3490 are 3491 no longer two different help screens. ACPICA BZ 957. 3492 3493 AcpiHelp: Fixed some typos in the various predefined name descriptions. 3494 Also 3495 expand some of the descriptions where appropriate. 3496 3497 iASL: Fixed the -ot option (display compile times/statistics). Was not 3498 working 3499 properly for standard output; only worked for the debug file case. 3500 3501 ---------------------------------------- 3502 18 May 2012. Summary of changes for version 20120518: 3503 3504 3505 1) ACPICA Core Subsystem: 3506 3507 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is 3508 defined 3509 to block until asynchronous events such as notifies and GPEs have 3510 completed. 3511 Within ACPICA, it is only called before a notify or GPE handler is 3512 removed/uninstalled. It also may be useful for the host OS within related 3513 drivers such as the Embedded Controller driver. See the ACPICA reference 3514 for 3515 additional information. ACPICA BZ 868. 3516 3517 ACPI Tables: Added a new error message for a possible overflow failure 3518 during 3519 the conversion of FADT 32-bit legacy register addresses to internal 3520 common 3521 64- 3522 bit GAS structure representation. The GAS has a one-byte "bit length" 3523 field, 3524 thus limiting the register length to 255 bits. ACPICA BZ 953. 3525 3526 Example Code and Data Size: These are the sizes for the OS-independent 3527 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3528 debug 3529 version of the code includes the debug output trace mechanism and has a 3530 much 3531 larger code and data size. 3532 3533 Previous Release: 3534 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 3535 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 3536 Current Release: 3537 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 3538 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 3539 3540 3541 2) iASL Compiler/Disassembler and Tools: 3542 3543 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL 3544 macro. 3545 This keyword was added late in the ACPI 5.0 release cycle and was not 3546 implemented until now. 3547 3548 Disassembler: Added support for Operation Region externals. Adds missing 3549 support for operation regions that are defined in another table, and 3550 referenced locally via a Field or BankField ASL operator. Now generates 3551 the 3552 correct External statement. 3553 3554 Disassembler: Several additional fixes for the External() statement 3555 generation 3556 related to some ASL operators. Also, order the External() statements 3557 alphabetically in the disassembler output. Fixes the External() 3558 generation 3559 for 3560 the Create* field, Alias, and Scope operators: 3561 1) Create* buffer field operators - fix type mismatch warning on 3562 disassembly 3563 2) Alias - implement missing External support 3564 3) Scope - fix to make sure all necessary externals are emitted. 3565 3566 iASL: Improved pathname support. For include files, merge the prefix 3567 pathname 3568 with the file pathname and eliminate unnecessary components. Convert 3569 backslashes in all pathnames to forward slashes, for readability. Include 3570 file 3571 pathname changes affect both #include and Include() type operators. 3572 3573 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the 3574 end 3575 of a valid line by inserting a newline and then returning the EOF during 3576 the 3577 next call to GetNextLine. Prevents the line from being ignored due to EOF 3578 condition. 3579 3580 iASL: Implemented some changes to enhance the IDE support (-vi option.) 3581 Error 3582 and Warning messages are now correctly recognized for both the source 3583 code 3584 browser and the global error and warning counts. 3585 3586 ---------------------------------------- 3587 20 April 2012. Summary of changes for version 20120420: 3588 3589 3590 1) ACPICA Core Subsystem: 3591 3592 Implemented support for multiple notify handlers. This change adds 3593 support 3594 to 3595 allow multiple system and device notify handlers on Device, Thermal Zone, 3596 and 3597 Processor objects. This can simplify the host OS notification 3598 implementation. 3599 Also re-worked and restructured the entire notify support code to 3600 simplify 3601 handler installation, handler removal, notify event queuing, and notify 3602 dispatch to handler(s). Note: there can still only be two global notify 3603 handlers - one for system notifies and one for device notifies. There are 3604 no 3605 changes to the existing handler install/remove interfaces. Lin Ming, Bob 3606 Moore, Rafael Wysocki. 3607 3608 Fixed a regression in the package repair code where the object reference 3609 count was calculated incorrectly. Regression was introduced in the commit 3610 "Support to add Package wrappers". 3611 3612 Fixed a couple possible memory leaks in the AML parser, in the error 3613 recovery 3614 path. Jesper Juhl, Lin Ming. 3615 3616 Example Code and Data Size: These are the sizes for the OS-independent 3617 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3618 debug version of the code includes the debug output trace mechanism and 3619 has a 3620 much larger code and data size. 3621 3622 Previous Release: 3623 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 3624 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 3625 Current Release: 3626 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 3627 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 3628 3629 3630 2) iASL Compiler/Disassembler and Tools: 3631 3632 iASL: Fixed a problem with the resource descriptor support where the 3633 length 3634 of the StartDependentFn and StartDependentFnNoPrio descriptors were not 3635 included in cumulative descriptor offset, resulting in incorrect values 3636 for 3637 resource tags within resource descriptors appearing after a 3638 StartDependent* 3639 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 3640 3641 iASL and Preprocessor: Implemented full support for the #line directive 3642 to 3643 correctly track original source file line numbers through the .i 3644 preprocessor 3645 output file - for error and warning messages. 3646 3647 iASL: Expand the allowable byte constants for address space IDs. 3648 Previously, 3649 the allowable range was 0x80-0xFF (user-defined spaces), now the range is 3650 0x0A-0xFF to allow for custom and new IDs without changing the compiler. 3651 3652 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 3653 3654 iASL: Add option to completely disable the preprocessor (-Pn). 3655 3656 iASL: Now emit all error/warning messages to standard error (stderr) by 3657 default (instead of the previous stdout). 3658 3659 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). 3660 Update 3661 for resource descriptor offset fix above. Update/cleanup error output 3662 routines. Enable and send iASL errors/warnings to an error logfile 3663 (error.txt). Send all other iASL output to a logfile (compiler.txt). 3664 Fixed 3665 several extraneous "unrecognized operator" messages. 3666 3667 ---------------------------------------- 3668 20 March 2012. Summary of changes for version 20120320: 3669 3670 3671 1) ACPICA Core Subsystem: 3672 3673 Enhanced the sleep/wake interfaces to optionally execute the _GTS method 3674 (Going To Sleep) and the _BFS method (Back From Sleep). Windows 3675 apparently 3676 does not execute these methods, and therefore these methods are often 3677 untested. It has been seen on some systems where the execution of these 3678 methods causes errors and also prevents the machine from entering S5. It 3679 is 3680 therefore suggested that host operating systems do not execute these 3681 methods 3682 by default. In the future, perhaps these methods can be optionally 3683 executed 3684 based on the age of the system and/or what is the newest version of 3685 Windows 3686 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState 3687 and 3688 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 3689 Ming. 3690 3691 Fixed a problem where the length of the local/common FADT was set too 3692 early. 3693 The local FADT table length cannot be set to the common length until the 3694 original length has been examined. There is code that checks the table 3695 length 3696 and sets various fields appropriately. This can affect older machines 3697 with 3698 early FADT versions. For example, this can cause inadvertent writes to 3699 the 3700 CST_CNT register. Julian Anastasov. 3701 3702 Fixed a mapping issue related to a physical table override. Use the 3703 deferred 3704 mapping mechanism for tables loaded via the physical override OSL 3705 interface. 3706 This allows for early mapping before the virtual memory manager is 3707 available. 3708 Thomas Renninger, Bob Moore. 3709 3710 Enhanced the automatic return-object repair code: Repair a common problem 3711 with 3712 predefined methods that are defined to return a variable-length Package 3713 of 3714 sub-objects. If there is only one sub-object, some BIOS ASL code 3715 mistakenly 3716 simply returns the single object instead of a Package with one sub- 3717 object. 3718 This new support will repair this error by wrapping a Package object 3719 around 3720 the original object, creating the correct and expected Package with one 3721 sub- 3722 object. Names that can be repaired in this manner include: _ALR, _CSD, 3723 _HPX, 3724 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 3725 939. 3726 3727 Changed the exception code returned for invalid ACPI paths passed as 3728 parameters to external interfaces such as AcpiEvaluateObject. Was 3729 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 3730 3731 Example Code and Data Size: These are the sizes for the OS-independent 3732 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3733 debug 3734 version of the code includes the debug output trace mechanism and has a 3735 much 3736 larger code and data size. 3737 3738 Previous Release: 3739 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 3740 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 3741 Current Release: 3742 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 3743 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 3744 3745 3746 2) iASL Compiler/Disassembler and Tools: 3747 3748 iASL: Added the infrastructure and initial implementation of a integrated 3749 C- 3750 like preprocessor. This will simplify BIOS development process by 3751 eliminating 3752 the need for a separate preprocessing step during builds. On Windows, it 3753 also 3754 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 3755 features including full #define() macro support are still under 3756 development. 3757 These preprocessor directives are supported: 3758 #define 3759 #elif 3760 #else 3761 #endif 3762 #error 3763 #if 3764 #ifdef 3765 #ifndef 3766 #include 3767 #pragma message 3768 #undef 3769 #warning 3770 In addition, these new command line options are supported: 3771 -D <symbol> Define symbol for preprocessor use 3772 -li Create preprocessed output file (*.i) 3773 -P Preprocess only and create preprocessor output file (*.i) 3774 3775 Table Compiler: Fixed a problem where the equals operator within an 3776 expression 3777 did not work properly. 3778 3779 Updated iASL to use the current versions of Bison/Flex. Updated the 3780 Windows 3781 project file to invoke these tools from the standard location. ACPICA BZ 3782 904. 3783 Versions supported: 3784 Flex for Windows: V2.5.4 3785 Bison for Windows: V2.4.1 3786 3787 ---------------------------------------- 3788 15 February 2012. Summary of changes for version 20120215: 3789 3790 3791 1) ACPICA Core Subsystem: 3792 3793 There have been some major changes to the sleep/wake support code, as 3794 described below (a - e). 3795 3796 a) The AcpiLeaveSleepState has been split into two interfaces, similar to 3797 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 3798 AcpiLeaveSleepStatePrep. This allows the host to perform actions between 3799 the 3800 time the _BFS method is called and the _WAK method is called. NOTE: all 3801 hosts 3802 must update their wake/resume code or else sleep/wake will not work 3803 properly. 3804 Rafael Wysocki. 3805 3806 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the 3807 _WAK 3808 method. Some machines require that the GPEs are enabled before the _WAK 3809 method 3810 is executed. Thomas Renninger. 3811 3812 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) 3813 bit. 3814 Some BIOS code assumes that WAK_STS will be cleared on resume and use it 3815 to 3816 determine whether the system is rebooting or resuming. Matthew Garrett. 3817 3818 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From 3819 Sleep) to 3820 match the ACPI specification requirement. Rafael Wysocki. 3821 3822 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 3823 registers within the V5 FADT. This support adds two new files: 3824 hardware/hwesleep.c implements the support for the new registers. Moved 3825 all 3826 sleep/wake external interfaces to hardware/hwxfsleep.c. 3827 3828 3829 Added a new OSL interface for ACPI table overrides, 3830 AcpiOsPhysicalTableOverride. This interface allows the host to override a 3831 table via a physical address, instead of the logical address required by 3832 AcpiOsTableOverride. This simplifies the host implementation. Initial 3833 implementation by Thomas Renninger. The ACPICA implementation creates a 3834 single 3835 shared function for table overrides that attempts both a logical and a 3836 physical override. 3837 3838 Expanded the OSL memory read/write interfaces to 64-bit data 3839 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 3840 transfer support for GAS register structures passed to AcpiRead and 3841 AcpiWrite. 3842 3843 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a 3844 custom 3845 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) 3846 model. 3847 See the ACPICA reference for details. ACPICA BZ 942. This option removes 3848 about 3849 10% of the code and 5% of the static data, and the following hardware 3850 ACPI 3851 features become unavailable: 3852 PM Event and Control registers 3853 SCI interrupt (and handler) 3854 Fixed Events 3855 General Purpose Events (GPEs) 3856 Global Lock 3857 ACPI PM timer 3858 FACS table (Waking vectors and Global Lock) 3859 3860 Updated the unix tarball directory structure to match the ACPICA git 3861 source 3862 tree. This ensures that the generic unix makefiles work properly (in 3863 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 3864 867. 3865 3866 Updated the return value of the _REV predefined method to integer value 5 3867 to 3868 reflect ACPI 5.0 support. 3869 3870 Moved the external ACPI PM timer interface prototypes to the public 3871 acpixf.h 3872 file where they belong. 3873 3874 Example Code and Data Size: These are the sizes for the OS-independent 3875 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3876 debug 3877 version of the code includes the debug output trace mechanism and has a 3878 much 3879 larger code and data size. 3880 3881 Previous Release: 3882 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 3883 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 3884 Current Release: 3885 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 3886 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 3887 3888 3889 2) iASL Compiler/Disassembler and Tools: 3890 3891 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 3892 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 3893 incorrectly displayed. 3894 3895 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 3896 specification. 3897 3898 ---------------------------------------- 3899 11 January 2012. Summary of changes for version 20120111: 3900 3901 3902 1) ACPICA Core Subsystem: 3903 3904 Implemented a new mechanism to allow host device drivers to check for 3905 address 3906 range conflicts with ACPI Operation Regions. Both SystemMemory and 3907 SystemIO 3908 address spaces are supported. A new external interface, 3909 AcpiCheckAddressRange, 3910 allows drivers to check an address range against the ACPI namespace. See 3911 the 3912 ACPICA reference for additional details. Adds one new file, 3913 utilities/utaddress.c. Lin Ming, Bob Moore. 3914 3915 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep 3916 Control 3917 and 3918 Status registers, update the ACPI 5.0 flags, and update internal data 3919 structures to handle an FADT larger than 256 bytes. The size of the ACPI 3920 5.0 3921 FADT is 268 bytes. 3922 3923 Updated all ACPICA copyrights and signons to 2012. Added the 2012 3924 copyright to 3925 all module headers and signons, including the standard Linux header. This 3926 affects virtually every file in the ACPICA core subsystem, iASL compiler, 3927 and 3928 all ACPICA utilities. 3929 3930 Example Code and Data Size: These are the sizes for the OS-independent 3931 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3932 debug 3933 version of the code includes the debug output trace mechanism and has a 3934 much 3935 larger code and data size. 3936 3937 Previous Release: 3938 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 3939 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 3940 Current Release: 3941 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 3942 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 3943 3944 3945 2) iASL Compiler/Disassembler and Tools: 3946 3947 Disassembler: fixed a problem with the automatic resource tag generation 3948 support. Fixes a problem where the resource tags are inadvertently not 3949 constructed if the table being disassembled contains external references 3950 to 3951 control methods. Moved the actual construction of the tags to after the 3952 final 3953 namespace is constructed (after 2nd parse is invoked due to external 3954 control 3955 method references.) ACPICA BZ 941. 3956 3957 Table Compiler: Make all "generic" operators caseless. These are the 3958 operators 3959 like UINT8, String, etc. Making these caseless improves ease-of-use. 3960 ACPICA BZ 3961 934. 3962 3963 ---------------------------------------- 3964 23 November 2011. Summary of changes for version 20111123: 3965 3966 0) ACPI 5.0 Support: 3967 3968 This release contains full support for the ACPI 5.0 specification, as 3969 summarized below. 3970 3971 Reduced Hardware Support: 3972 ------------------------- 3973 3974 This support allows for ACPI systems without the usual ACPI hardware. 3975 This 3976 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA 3977 will 3978 not attempt to initialize or use any of the usual ACPI hardware. Note, 3979 when 3980 this flag is set, all of the following ACPI hardware is assumed to be not 3981 present and is not initialized or accessed: 3982 3983 General Purpose Events (GPEs) 3984 Fixed Events (PM1a/PM1b and PM Control) 3985 Power Management Timer and Console Buttons (power/sleep) 3986 Real-time Clock Alarm 3987 Global Lock 3988 System Control Interrupt (SCI) 3989 The FACS is assumed to be non-existent 3990 3991 ACPI Tables: 3992 ------------ 3993 3994 All new tables and updates to existing tables are fully supported in the 3995 ACPICA headers (for use by device drivers), the disassembler, and the 3996 iASL 3997 Data Table Compiler. ACPI 5.0 defines these new tables: 3998 3999 BGRT /* Boot Graphics Resource Table */ 4000 DRTM /* Dynamic Root of Trust for Measurement table */ 4001 FPDT /* Firmware Performance Data Table */ 4002 GTDT /* Generic Timer Description Table */ 4003 MPST /* Memory Power State Table */ 4004 PCCT /* Platform Communications Channel Table */ 4005 PMTT /* Platform Memory Topology Table */ 4006 RASF /* RAS Feature table */ 4007 4008 Operation Regions/SpaceIDs: 4009 --------------------------- 4010 4011 All new operation regions are fully supported by the iASL compiler, the 4012 disassembler, and the ACPICA runtime code (for dispatch to region 4013 handlers.) 4014 The new operation region Space IDs are: 4015 4016 GeneralPurposeIo 4017 GenericSerialBus 4018 4019 Resource Descriptors: 4020 --------------------- 4021 4022 All new ASL resource descriptors are fully supported by the iASL 4023 compiler, 4024 the 4025 ASL/AML disassembler, and the ACPICA runtime Resource Manager code 4026 (including 4027 all new predefined resource tags). New descriptors are: 4028 4029 FixedDma 4030 GpioIo 4031 GpioInt 4032 I2cSerialBus 4033 SpiSerialBus 4034 UartSerialBus 4035 4036 ASL/AML Operators, New and Modified: 4037 ------------------------------------ 4038 4039 One new operator is added, the Connection operator, which is used to 4040 associate 4041 a GeneralPurposeIo or GenericSerialBus resource descriptor with 4042 individual 4043 field objects within an operation region. Several new protocols are 4044 associated 4045 with the AccessAs operator. All are fully supported by the iASL compiler, 4046 disassembler, and runtime ACPICA AML interpreter: 4047 4048 Connection // Declare Field Connection 4049 attributes 4050 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 4051 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes 4052 Protocol 4053 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 4054 RawDataBuffer // Data type for Vendor Data 4055 fields 4056 4057 Predefined ASL/AML Objects: 4058 --------------------------- 4059 4060 All new predefined objects/control-methods are supported by the iASL 4061 compiler 4062 and the ACPICA runtime validation/repair (arguments and return values.) 4063 New 4064 predefined names include the following: 4065 4066 Standard Predefined Names (Objects or Control Methods): 4067 _AEI, _CLS, _CPC, _CWS, _DEP, 4068 _DLM, _EVT, _GCP, _CRT, _GWS, 4069 _HRV, _PRE, _PSE, _SRT, _SUB. 4070 4071 Resource Tags (Names used to access individual fields within resource 4072 descriptors): 4073 _DBT, _DPL, _DRS, _END, _FLC, 4074 _IOR, _LIN, _MOD, _PAR, _PHA, 4075 _PIN, _PPI, _POL, _RXL, _SLV, 4076 _SPE, _STB, _TXL, _VEN. 4077 4078 ACPICA External Interfaces: 4079 --------------------------- 4080 4081 Several new interfaces have been defined for use by ACPI-related device 4082 drivers and other host OS services: 4083 4084 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS 4085 to 4086 acquire and release AML mutexes that are defined in the DSDT/SSDT tables 4087 provided by the BIOS. They are intended to be used in conjunction with 4088 the 4089 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 4090 mutual exclusion with the AML code/interpreter. 4091 4092 AcpiGetEventResources: Returns the (formatted) resource descriptors as 4093 defined 4094 by the ACPI 5.0 _AEI object (ACPI Event Information). This object 4095 provides 4096 resource descriptors associated with hardware-reduced platform events, 4097 similar 4098 to the AcpiGetCurrentResources interface. 4099 4100 Operation Region Handlers: For General Purpose IO and Generic Serial Bus 4101 operation regions, information about the Connection() object and any 4102 optional 4103 length information is passed to the region handler within the Context 4104 parameter. 4105 4106 AcpiBufferToResource: This interface converts a raw AML buffer containing 4107 a 4108 resource template or resource descriptor to the ACPI_RESOURCE internal 4109 format 4110 suitable for use by device drivers. Can be used by an operation region 4111 handler 4112 to convert the Connection() buffer object into a ACPI_RESOURCE. 4113 4114 Miscellaneous/Tools/TestSuites: 4115 ------------------------------- 4116 4117 Support for extended _HID names (Four alpha characters instead of three). 4118 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 4119 Support for ACPI 5.0 features in the ASLTS test suite. 4120 Fully updated documentation (ACPICA and iASL reference documents.) 4121 4122 ACPI Table Definition Language: 4123 ------------------------------- 4124 4125 Support for this language was implemented and released as a subsystem of 4126 the 4127 iASL compiler in 2010. (See the iASL compiler User Guide.) 4128 4129 4130 Non-ACPI 5.0 changes for this release: 4131 -------------------------------------- 4132 4133 1) ACPICA Core Subsystem: 4134 4135 Fix a problem with operation region declarations where a failure can 4136 occur 4137 if 4138 the region name and an argument that evaluates to an object (such as the 4139 region address) are in different namespace scopes. Lin Ming, ACPICA BZ 4140 937. 4141 4142 Do not abort an ACPI table load if an invalid space ID is found within. 4143 This 4144 will be caught later if the offending method is executed. ACPICA BZ 925. 4145 4146 Fixed an issue with the FFixedHW space ID where the ID was not always 4147 recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 4148 4149 Fixed a problem with the 32-bit generation of the unix-specific OSL 4150 (osunixxf.c). Lin Ming, ACPICA BZ 936. 4151 4152 Several changes made to enable generation with the GCC 4.6 compiler. 4153 ACPICA BZ 4154 935. 4155 4156 New error messages: Unsupported I/O requests (not 8/16/32 bit), and 4157 Index/Bank 4158 field registers out-of-range. 4159 4160 2) iASL Compiler/Disassembler and Tools: 4161 4162 iASL: Implemented the __PATH__ operator, which returns the full pathname 4163 of 4164 the current source file. 4165 4166 AcpiHelp: Automatically display expanded keyword information for all ASL 4167 operators. 4168 4169 Debugger: Add "Template" command to disassemble/dump resource template 4170 buffers. 4171 4172 Added a new master script to generate and execute the ASLTS test suite. 4173 Automatically handles 32- and 64-bit generation. See tests/aslts.sh 4174 4175 iASL: Fix problem with listing generation during processing of the 4176 Switch() 4177 operator where AML listing was disabled until the entire Switch block was 4178 completed. 4179 4180 iASL: Improve support for semicolon statement terminators. Fix "invalid 4181 character" message for some cases when the semicolon is used. Semicolons 4182 are 4183 now allowed after every <Term> grammar element. ACPICA BZ 927. 4184 4185 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 4186 923. 4187 4188 Disassembler: Fix problem with disassembly of the DataTableRegion 4189 operator 4190 where an inadvertent "Unhandled deferred opcode" message could be 4191 generated. 4192 4193 3) Example Code and Data Size 4194 4195 These are the sizes for the OS-independent acpica.lib produced by the 4196 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 4197 includes the debug output trace mechanism and has a much larger code and 4198 data 4199 size. 4200 4201 Previous Release: 4202 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 4203 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4204 Current Release: 4205 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 4206 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 4207 4208 ---------------------------------------- 4209 22 September 2011. Summary of changes for version 20110922: 4210 4211 0) ACPI 5.0 News: 4212 4213 Support for ACPI 5.0 in ACPICA has been underway for several months and 4214 will 4215 be released at the same time that ACPI 5.0 is officially released. 4216 4217 The ACPI 5.0 specification is on track for release in the next few 4218 months. 4219 4220 1) ACPICA Core Subsystem: 4221 4222 Fixed a problem where the maximum sleep time for the Sleep() operator was 4223 intended to be limited to two seconds, but was inadvertently limited to 4224 20 4225 seconds instead. 4226 4227 Linux and Unix makefiles: Added header file dependencies to ensure 4228 correct 4229 generation of ACPICA core code and utilities. Also simplified the 4230 makefiles 4231 considerably through the use of the vpath variable to specify search 4232 paths. 4233 ACPICA BZ 924. 4234 4235 2) iASL Compiler/Disassembler and Tools: 4236 4237 iASL: Implemented support to check the access length for all fields 4238 created to 4239 access named Resource Descriptor fields. For example, if a resource field 4240 is 4241 defined to be two bits, a warning is issued if a CreateXxxxField() is 4242 used 4243 with an incorrect bit length. This is implemented for all current 4244 resource 4245 descriptor names. ACPICA BZ 930. 4246 4247 Disassembler: Fixed a byte ordering problem with the output of 24-bit and 4248 56- 4249 bit integers. 4250 4251 iASL: Fixed a couple of issues associated with variable-length package 4252 objects. 1) properly handle constants like One, Ones, Zero -- do not make 4253 a 4254 VAR_PACKAGE when these are used as a package length. 2) Allow the 4255 VAR_PACKAGE 4256 opcode (in addition to PACKAGE) when validating object types for 4257 predefined 4258 names. 4259 4260 iASL: Emit statistics for all output files (instead of just the ASL input 4261 and 4262 AML output). Includes listings, hex files, etc. 4263 4264 iASL: Added -G option to the table compiler to allow the compilation of 4265 custom 4266 ACPI tables. The only part of a table that is required is the standard 4267 36- 4268 byte 4269 ACPI header. 4270 4271 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA 4272 headers), 4273 which also adds correct 64-bit support. Also, now all output filenames 4274 are 4275 completely lower case. 4276 4277 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 4278 loading table files. A warning is issued for any such tables. The only 4279 exception is an FADT. This also fixes a possible fault when attempting to 4280 load 4281 non-AML tables. ACPICA BZ 932. 4282 4283 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where 4284 a 4285 missing table terminator could cause a fault when using the -p option. 4286 4287 AcpiSrc: Fixed a possible divide-by-zero fault when generating file 4288 statistics. 4289 4290 3) Example Code and Data Size 4291 4292 These are the sizes for the OS-independent acpica.lib produced by the 4293 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 4294 includes the debug output trace mechanism and has a much larger code and 4295 data 4296 size. 4297 4298 Previous Release (VC 9.0): 4299 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 4300 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4301 Current Release (VC 9.0): 4302 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 4303 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4304 4305 4306 ---------------------------------------- 4307 23 June 2011. Summary of changes for version 20110623: 4308 4309 1) ACPI CA Core Subsystem: 4310 4311 Updated the predefined name repair mechanism to not attempt repair of a 4312 _TSS 4313 return object if a _PSS object is present. We can only sort the _TSS 4314 return 4315 package if there is no _PSS within the same scope. This is because if 4316 _PSS 4317 is 4318 present, the ACPI specification dictates that the _TSS Power Dissipation 4319 field 4320 is to be ignored, and therefore some BIOSs leave garbage values in the 4321 _TSS 4322 Power field(s). In this case, it is best to just return the _TSS package 4323 as- 4324 is. Reported by, and fixed with assistance from Fenghua Yu. 4325 4326 Added an option to globally disable the control method return value 4327 validation 4328 and repair. This runtime option can be used to disable return value 4329 repair 4330 if 4331 this is causing a problem on a particular machine. Also added an option 4332 to 4333 AcpiExec (-dr) to set this disable flag. 4334 4335 All makefiles and project files: Major changes to improve generation of 4336 ACPICA 4337 tools. ACPICA BZ 912: 4338 Reduce default optimization levels to improve compatibility 4339 For Linux, add strict-aliasing=0 for gcc 4 4340 Cleanup and simplify use of command line defines 4341 Cleanup multithread library support 4342 Improve usage messages 4343 4344 Linux-specific header: update handling of THREAD_ID and pthread. For the 4345 32- 4346 bit case, improve casting to eliminate possible warnings, especially with 4347 the 4348 acpica tools. 4349 4350 Example Code and Data Size: These are the sizes for the OS-independent 4351 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4352 debug 4353 version of the code includes the debug output trace mechanism and has a 4354 much 4355 larger code and data size. 4356 4357 Previous Release (VC 9.0): 4358 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 4359 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4360 Current Release (VC 9.0): 4361 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 4362 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4363 4364 2) iASL Compiler/Disassembler and Tools: 4365 4366 With this release, a new utility named "acpihelp" has been added to the 4367 ACPICA 4368 package. This utility summarizes the ACPI specification chapters for the 4369 ASL 4370 and AML languages. It generates under Linux/Unix as well as Windows, and 4371 provides the following functionality: 4372 Find/display ASL operator(s) -- with description and syntax. 4373 Find/display ASL keyword(s) -- with exact spelling and descriptions. 4374 Find/display ACPI predefined name(s) -- with description, number 4375 of arguments, and the return value data type. 4376 Find/display AML opcode name(s) -- with opcode, arguments, and 4377 grammar. 4378 Decode/display AML opcode -- with opcode name, arguments, and 4379 grammar. 4380 4381 Service Layers: Make multi-thread support configurable. Conditionally 4382 compile 4383 the multi-thread support so that threading libraries will not be linked 4384 if 4385 not 4386 necessary. The only tool that requires multi-thread support is AcpiExec. 4387 4388 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions 4389 of 4390 Bison appear to want the interface to yyerror to be a const char * (or at 4391 least this is a problem when generating iASL on some systems.) ACPICA BZ 4392 923 4393 Pierre Lejeune. 4394 4395 Tools: Fix for systems where O_BINARY is not defined. Only used for 4396 Windows 4397 versions of the tools. 4398 4399 ---------------------------------------- 4400 27 May 2011. Summary of changes for version 20110527: 4401 4402 1) ACPI CA Core Subsystem: 4403 4404 ASL Load() operator: Reinstate most restrictions on the incoming ACPI 4405 table 4406 signature. Now, only allow SSDT, OEMx, and a null signature. History: 4407 1) Originally, we checked the table signature for "SSDT" or "PSDT". 4408 (PSDT is now obsolete.) 4409 2) We added support for OEMx tables, signature "OEM" plus a fourth 4410 "don't care" character. 4411 3) Valid tables were encountered with a null signature, so we just 4412 gave up on validating the signature, (05/2008). 4413 4) We encountered non-AML tables such as the MADT, which caused 4414 interpreter errors and kernel faults. So now, we once again allow 4415 only SSDT, OEMx, and now, also a null signature. (05/2011). 4416 4417 Added the missing _TDL predefined name to the global name list in order 4418 to 4419 enable validation. Affects both the core ACPICA code and the iASL 4420 compiler. 4421 4422 Example Code and Data Size: These are the sizes for the OS-independent 4423 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4424 debug 4425 version of the code includes the debug output trace mechanism and has a 4426 much 4427 larger code and data size. 4428 4429 Previous Release (VC 9.0): 4430 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 4431 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 4432 Current Release (VC 9.0): 4433 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 4434 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4435 4436 2) iASL Compiler/Disassembler and Tools: 4437 4438 Debugger/AcpiExec: Implemented support for "complex" method arguments on 4439 the 4440 debugger command line. This adds support beyond simple integers -- 4441 including 4442 Strings, Buffers, and Packages. Includes support for nested packages. 4443 Increased the default command line buffer size to accommodate these 4444 arguments. 4445 See the ACPICA reference for details and syntax. ACPICA BZ 917. 4446 4447 Debugger/AcpiExec: Implemented support for "default" method arguments for 4448 the 4449 Execute/Debug command. Now, the debugger will always invoke a control 4450 method 4451 with the required number of arguments -- even if the command line 4452 specifies 4453 none or insufficient arguments. It uses default integer values for any 4454 missing 4455 arguments. Also fixes a bug where only six method arguments maximum were 4456 supported instead of the required seven. 4457 4458 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine 4459 and 4460 also return status in order to prevent buffer overruns. See the ACPICA 4461 reference for details and syntax. ACPICA BZ 921 4462 4463 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 4464 makefiles to simplify support for the two different but similar parser 4465 generators, bison and yacc. 4466 4467 Updated the generic unix makefile for gcc 4. The default gcc version is 4468 now 4469 expected to be 4 or greater, since options specific to gcc 4 are used. 4470 4471 ---------------------------------------- 4472 13 April 2011. Summary of changes for version 20110413: 4473 4474 1) ACPI CA Core Subsystem: 4475 4476 Implemented support to execute a so-called "orphan" _REG method under the 4477 EC 4478 device. This change will force the execution of a _REG method underneath 4479 the 4480 EC 4481 device even if there is no corresponding operation region of type 4482 EmbeddedControl. Fixes a problem seen on some machines and apparently is 4483 compatible with Windows behavior. ACPICA BZ 875. 4484 4485 Added more predefined methods that are eligible for automatic NULL 4486 package 4487 element removal. This change adds another group of predefined names to 4488 the 4489 list 4490 of names that can be repaired by having NULL package elements dynamically 4491 removed. This group are those methods that return a single variable- 4492 length 4493 package containing simple data types such as integers, buffers, strings. 4494 This 4495 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, 4496 _PSL, 4497 _Sx, 4498 and _TZD. ACPICA BZ 914. 4499 4500 Split and segregated all internal global lock functions to a new file, 4501 evglock.c. 4502 4503 Updated internal address SpaceID for DataTable regions. Moved this 4504 internal 4505 space 4506 id in preparation for ACPI 5.0 changes that will include some new space 4507 IDs. 4508 This 4509 change should not affect user/host code. 4510 4511 Example Code and Data Size: These are the sizes for the OS-independent 4512 acpica.lib 4513 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 4514 version of 4515 the code includes the debug output trace mechanism and has a much larger 4516 code 4517 and 4518 data size. 4519 4520 Previous Release (VC 9.0): 4521 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 4522 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 4523 Current Release (VC 9.0): 4524 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 4525 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 4526 4527 2) iASL Compiler/Disassembler and Tools: 4528 4529 iASL/DTC: Major update for new grammar features. Allow generic data types 4530 in 4531 custom ACPI tables. Field names are now optional. Any line can be split 4532 to 4533 multiple lines using the continuation char (\). Large buffers now use 4534 line- 4535 continuation character(s) and no colon on the continuation lines. See the 4536 grammar 4537 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob 4538 Moore. 4539 4540 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return 4541 statements. 4542 Since the parser stuffs a "zero" as the return value for these statements 4543 (due 4544 to 4545 the underlying AML grammar), they were seen as "return with value" by the 4546 iASL 4547 semantic checking. They are now seen correctly as "null" return 4548 statements. 4549 4550 iASL: Check if a_REG declaration has a corresponding Operation Region. 4551 Adds a 4552 check for each _REG to ensure that there is in fact a corresponding 4553 operation 4554 region declaration in the same scope. If not, the _REG method is not very 4555 useful 4556 since it probably won't be executed. ACPICA BZ 915. 4557 4558 iASL/DTC: Finish support for expression evaluation. Added a new 4559 expression 4560 parser 4561 that implements c-style operator precedence and parenthesization. ACPICA 4562 bugzilla 4563 908. 4564 4565 Disassembler/DTC: Remove support for () and <> style comments in data 4566 tables. 4567 Now 4568 that DTC has full expression support, we don't want to have comment 4569 strings 4570 that 4571 start with a parentheses or a less-than symbol. Now, only the standard /* 4572 and 4573 // 4574 comments are supported, as well as the bracket [] comments. 4575 4576 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 4577 "unusual" 4578 headers in the acpidump file. Update the header validation to support 4579 these 4580 tables. Problem introduced in previous AcpiXtract version in the change 4581 to 4582 support "wrong checksum" error messages emitted by acpidump utility. 4583 4584 iASL: Add a * option to generate all template files (as a synonym for 4585 ALL) 4586 as 4587 in 4588 "iasl -T *" or "iasl -T ALL". 4589 4590 iASL/DTC: Do not abort compiler on fatal errors. We do not want to 4591 completely 4592 abort the compiler on "fatal" errors, simply should abort the current 4593 compile. 4594 This allows multiple compiles with a single (possibly wildcard) compiler 4595 invocation. 4596 4597 ---------------------------------------- 4598 16 March 2011. Summary of changes for version 20110316: 4599 4600 1) ACPI CA Core Subsystem: 4601 4602 Fixed a problem caused by a _PRW method appearing at the namespace root 4603 scope 4604 during the setup of wake GPEs. A fault could occur if a _PRW directly 4605 under 4606 the 4607 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 4608 4609 Implemented support for "spurious" Global Lock interrupts. On some 4610 systems, a 4611 global lock interrupt can occur without the pending flag being set. Upon 4612 a 4613 GL 4614 interrupt, we now ensure that a thread is actually waiting for the lock 4615 before 4616 signaling GL availability. Rafael Wysocki, Bob Moore. 4617 4618 Example Code and Data Size: These are the sizes for the OS-independent 4619 acpica.lib 4620 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 4621 version of 4622 the code includes the debug output trace mechanism and has a much larger 4623 code 4624 and 4625 data size. 4626 4627 Previous Release (VC 9.0): 4628 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 4629 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 4630 Current Release (VC 9.0): 4631 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 4632 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 4633 4634 2) iASL Compiler/Disassembler and Tools: 4635 4636 Implemented full support for the "SLIC" ACPI table. Includes support in 4637 the 4638 header files, disassembler, table compiler, and template generator. Bob 4639 Moore, 4640 Lin Ming. 4641 4642 AcpiXtract: Correctly handle embedded comments and messages from 4643 AcpiDump. 4644 Apparently some or all versions of acpidump will occasionally emit a 4645 comment 4646 like 4647 "Wrong checksum", etc., into the dump file. This was causing problems for 4648 AcpiXtract. ACPICA BZ 905. 4649 4650 iASL: Fix the Linux makefile by removing an inadvertent double file 4651 inclusion. 4652 ACPICA BZ 913. 4653 4654 AcpiExec: Update installation of operation region handlers. Install one 4655 handler 4656 for a user-defined address space. This is used by the ASL test suite 4657 (ASLTS). 4658 4659 ---------------------------------------- 4660 11 February 2011. Summary of changes for version 20110211: 4661 4662 1) ACPI CA Core Subsystem: 4663 4664 Added a mechanism to defer _REG methods for some early-installed 4665 handlers. 4666 Most user handlers should be installed before call to 4667 AcpiEnableSubsystem. 4668 However, Event handlers and region handlers should be installed after 4669 AcpiInitializeObjects. Override handlers for the "default" regions should 4670 be 4671 installed early, however. This change executes all _REG methods for the 4672 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 4673 chicken/egg issues between them. ACPICA BZ 848. 4674 4675 Implemented an optimization for GPE detection. This optimization will 4676 simply 4677 ignore GPE registers that contain no enabled GPEs -- there is no need to 4678 read the register since this information is available internally. This 4679 becomes more important on machines with a large GPE space. ACPICA 4680 bugzilla 4681 884. Lin Ming. Suggestion from Joe Liu. 4682 4683 Removed all use of the highly unreliable FADT revision field. The 4684 revision 4685 number in the FADT has been found to be completely unreliable and cannot 4686 be 4687 trusted. Only the actual table length can be used to infer the version. 4688 This 4689 change updates the ACPICA core and the disassembler so that both no 4690 longer 4691 even look at the FADT version and instead depend solely upon the FADT 4692 length. 4693 4694 Fix an unresolved name issue for the no-debug and no-error-message source 4695 generation cases. The _AcpiModuleName was left undefined in these cases, 4696 but 4697 it is actually needed as a parameter to some interfaces. Define 4698 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 4699 4700 Split several large files (makefiles and project files updated) 4701 utglobal.c -> utdecode.c 4702 dbcomds.c -> dbmethod.c dbnames.c 4703 dsopcode.c -> dsargs.c dscontrol.c 4704 dsload.c -> dsload2.c 4705 aslanalyze.c -> aslbtypes.c aslwalks.c 4706 4707 Example Code and Data Size: These are the sizes for the OS-independent 4708 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4709 debug version of the code includes the debug output trace mechanism and 4710 has 4711 a much larger code and data size. 4712 4713 Previous Release (VC 9.0): 4714 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 4715 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 4716 Current Release (VC 9.0): 4717 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 4718 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 4719 4720 2) iASL Compiler/Disassembler and Tools: 4721 4722 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 4723 These are useful C-style macros with the standard definitions. ACPICA 4724 bugzilla 898. 4725 4726 iASL/DTC: Added support for integer expressions and labels. Support for 4727 full 4728 expressions for all integer fields in all ACPI tables. Support for labels 4729 in 4730 "generic" portions of tables such as UEFI. See the iASL reference manual. 4731 4732 Debugger: Added a command to display the status of global handlers. The 4733 "handlers" command will display op region, fixed event, and miscellaneous 4734 global handlers. installation status -- and for op regions, whether 4735 default 4736 or user-installed handler will be used. 4737 4738 iASL: Warn if reserved method incorrectly returns a value. Many 4739 predefined 4740 names are defined such that they do not return a value. If implemented as 4741 a 4742 method, issue a warning if such a name explicitly returns a value. ACPICA 4743 Bugzilla 855. 4744 4745 iASL: Added detection of GPE method name conflicts. Detects a conflict 4746 where 4747 there are two GPE methods of the form _Lxy and _Exy in the same scope. 4748 (For 4749 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 4750 4751 iASL/DTC: Fixed a couple input scanner issues with comments and line 4752 numbers. Comment remover could get confused and miss a comment ending. 4753 Fixed 4754 a problem with line counter maintenance. 4755 4756 iASL/DTC: Reduced the severity of some errors from fatal to error. There 4757 is 4758 no need to abort on simple errors within a field definition. 4759 4760 Debugger: Simplified the output of the help command. All help output now 4761 in 4762 a single screen, instead of help subcommands. ACPICA Bugzilla 897. 4763 4764 ---------------------------------------- 4765 12 January 2011. Summary of changes for version 20110112: 4766 4767 1) ACPI CA Core Subsystem: 4768 4769 Fixed a race condition between method execution and namespace walks that 4770 can 4771 possibly cause a fault. The problem was apparently introduced in version 4772 20100528 as a result of a performance optimization that reduces the 4773 number 4774 of 4775 namespace walks upon method exit by using the delete_namespace_subtree 4776 function instead of the delete_namespace_by_owner function used 4777 previously. 4778 Bug is a missing namespace lock in the delete_namespace_subtree function. 4779 dana.myers (a] oracle.com 4780 4781 Fixed several issues and a possible fault with the automatic "serialized" 4782 method support. History: This support changes a method to "serialized" on 4783 the 4784 fly if the method generates an AE_ALREADY_EXISTS error, indicating the 4785 possibility that it cannot handle reentrancy. This fix repairs a couple 4786 of 4787 issues seen in the field, especially on machines with many cores: 4788 4789 1) Delete method children only upon the exit of the last thread, 4790 so as to not delete objects out from under other running threads 4791 (and possibly causing a fault.) 4792 2) Set the "serialized" bit for the method only upon the exit of the 4793 Last thread, so as to not cause deadlock when running threads 4794 attempt to exit. 4795 3) Cleanup the use of the AML "MethodFlags" and internal method flags 4796 so that there is no longer any confusion between the two. 4797 4798 Lin Ming, Bob Moore. Reported by dana.myers (a] oracle.com. 4799 4800 Debugger: Now lock the namespace for duration of a namespace dump. 4801 Prevents 4802 issues if the namespace is changing dynamically underneath the debugger. 4803 Especially affects temporary namespace nodes, since the debugger displays 4804 these also. 4805 4806 Updated the ordering of include files. The ACPICA headers should appear 4807 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can 4808 set 4809 any necessary compiler-specific defines, etc. Affects the ACPI-related 4810 tools 4811 and utilities. 4812 4813 Updated all ACPICA copyrights and signons to 2011. Added the 2011 4814 copyright 4815 to all module headers and signons, including the Linux header. This 4816 affects 4817 virtually every file in the ACPICA core subsystem, iASL compiler, and all 4818 utilities. 4819 4820 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 4821 project files for VC++ 6.0 are now obsolete. New project files can be 4822 found 4823 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 4824 details. 4825 4826 Example Code and Data Size: These are the sizes for the OS-independent 4827 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4828 debug version of the code includes the debug output trace mechanism and 4829 has a 4830 much larger code and data size. 4831 4832 Previous Release (VC 6.0): 4833 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 4834 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 4835 Current Release (VC 9.0): 4836 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 4837 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 4838 4839 2) iASL Compiler/Disassembler and Tools: 4840 4841 iASL: Added generic data types to the Data Table compiler. Add "generic" 4842 data 4843 types such as UINT32, String, Unicode, etc., to simplify the generation 4844 of 4845 platform-defined tables such as UEFI. Lin Ming. 4846 4847 iASL: Added listing support for the Data Table Compiler. Adds listing 4848 support 4849 (-l) to display actual binary output for each line of input code. 4850 4851 ---------------------------------------- 4852 09 December 2010. Summary of changes for version 20101209: 4853 4854 1) ACPI CA Core Subsystem: 4855 4856 Completed the major overhaul of the GPE support code that was begun in 4857 July 4858 2010. Major features include: removal of _PRW execution in ACPICA (host 4859 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 4860 changes to existing interfaces, simplification of GPE handler operation, 4861 and 4862 a handful of new interfaces: 4863 4864 AcpiUpdateAllGpes 4865 AcpiFinishGpe 4866 AcpiSetupGpeForWake 4867 AcpiSetGpeWakeMask 4868 One new file, evxfgpe.c to consolidate all external GPE interfaces. 4869 4870 See the ACPICA Programmer Reference for full details and programming 4871 information. See the new section 4.4 "General Purpose Event (GPE) 4872 Support" 4873 for a full overview, and section 8.7 "ACPI General Purpose Event 4874 Management" 4875 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin 4876 Ming, 4877 Bob Moore, Rafael Wysocki. 4878 4879 Implemented a new GPE feature for Windows compatibility, the "Implicit 4880 Wake 4881 GPE Notify". This feature will automatically issue a Notify(2) on a 4882 device 4883 when a Wake GPE is received if there is no corresponding GPE method or 4884 handler. ACPICA BZ 870. 4885 4886 Fixed a problem with the Scope() operator during table parse and load 4887 phase. 4888 During load phase (table load or method execution), the scope operator 4889 should 4890 not enter the target into the namespace. Instead, it should open a new 4891 scope 4892 at the target location. Linux BZ 19462, ACPICA BZ 882. 4893 4894 Example Code and Data Size: These are the sizes for the OS-independent 4895 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4896 debug version of the code includes the debug output trace mechanism and 4897 has a 4898 much larger code and data size. 4899 4900 Previous Release: 4901 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 4902 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 4903 Current Release: 4904 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4905 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4906 4907 2) iASL Compiler/Disassembler and Tools: 4908 4909 iASL: Relax the alphanumeric restriction on _CID strings. These strings 4910 are 4911 "bus-specific" per the ACPI specification, and therefore any characters 4912 are 4913 acceptable. The only checks that can be performed are for a null string 4914 and 4915 perhaps for a leading asterisk. ACPICA BZ 886. 4916 4917 iASL: Fixed a problem where a syntax error that caused a premature EOF 4918 condition on the source file emitted a very confusing error message. The 4919 premature EOF is now detected correctly. ACPICA BZ 891. 4920 4921 Disassembler: Decode the AccessSize within a Generic Address Structure 4922 (byte 4923 access, word access, etc.) Note, this field does not allow arbitrary bit 4924 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 4925 4926 New: AcpiNames utility - Example namespace dump utility. Shows an example 4927 of 4928 ACPICA configuration for a minimal namespace dump utility. Uses table and 4929 namespace managers, but no AML interpreter. Does not add any 4930 functionality 4931 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 4932 partition and configure ACPICA. ACPICA BZ 883. 4933 4934 AML Debugger: Increased the debugger buffer size for method return 4935 objects. 4936 Was 4K, increased to 16K. Also enhanced error messages for debugger 4937 method 4938 execution, including the buffer overflow case. 4939 4940 ---------------------------------------- 4941 13 October 2010. Summary of changes for version 20101013: 4942 4943 1) ACPI CA Core Subsystem: 4944 4945 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, 4946 now 4947 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 4948 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 4949 4950 Changed the type of the predefined namespace object _TZ from ThermalZone 4951 to 4952 Device. This was found to be confusing to the host software that 4953 processes 4954 the various thermal zones, since _TZ is not really a ThermalZone. 4955 However, 4956 a 4957 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 4958 Zhang. 4959 4960 Added Windows Vista SP2 to the list of supported _OSI strings. The actual 4961 string is "Windows 2006 SP2". 4962 4963 Eliminated duplicate code in AcpiUtExecute* functions. Now that the 4964 nsrepair 4965 code automatically repairs _HID-related strings, this type of code is no 4966 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 4967 878. 4968 4969 Example Code and Data Size: These are the sizes for the OS-independent 4970 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4971 debug version of the code includes the debug output trace mechanism and 4972 has a 4973 much larger code and data size. 4974 4975 Previous Release: 4976 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4977 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4978 Current Release: 4979 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4980 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4981 4982 2) iASL Compiler/Disassembler and Tools: 4983 4984 iASL: Implemented additional compile-time validation for _HID strings. 4985 The 4986 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the 4987 length 4988 of 4989 the string must be exactly seven or eight characters. For both _HID and 4990 _CID 4991 strings, all characters must be alphanumeric. ACPICA BZ 874. 4992 4993 iASL: Allow certain "null" resource descriptors. Some BIOS code creates 4994 descriptors that are mostly or all zeros, with the expectation that they 4995 will 4996 be filled in at runtime. iASL now allows this as long as there is a 4997 "resource 4998 tag" (name) associated with the descriptor, which gives the ASL a handle 4999 needed to modify the descriptor. ACPICA BZ 873. 5000 5001 Added single-thread support to the generic Unix application OSL. 5002 Primarily 5003 for iASL support, this change removes the use of semaphores in the 5004 single- 5005 threaded ACPICA tools/applications - increasing performance. The 5006 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 5007 option. ACPICA BZ 879. 5008 5009 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and 5010 support 5011 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 5012 5013 iASL: Moved all compiler messages to a new file, aslmessages.h. 5014 5015 ---------------------------------------- 5016 15 September 2010. Summary of changes for version 20100915: 5017 5018 1) ACPI CA Core Subsystem: 5019 5020 Removed the AcpiOsDerivePciId OSL interface. The various host 5021 implementations 5022 of this function were not OS-dependent and are now obsolete and can be 5023 removed from all host OSLs. This function has been replaced by 5024 AcpiHwDerivePciId, which is now part of the ACPICA core code. 5025 AcpiHwDerivePciId has been implemented without recursion. Adds one new 5026 module, hwpci.c. ACPICA BZ 857. 5027 5028 Implemented a dynamic repair for _HID and _CID strings. The following 5029 problems are now repaired at runtime: 1) Remove a leading asterisk in the 5030 string, and 2) the entire string is uppercased. Both repairs are in 5031 accordance with the ACPI specification and will simplify host driver 5032 code. 5033 ACPICA BZ 871. 5034 5035 The ACPI_THREAD_ID type is no longer configurable, internally it is now 5036 always UINT64. This simplifies the ACPICA code, especially any printf 5037 output. 5038 UINT64 is the only common data type for all thread_id types across all 5039 operating systems. It is now up to the host OSL to cast the native 5040 thread_id 5041 type to UINT64 before returning the value to ACPICA (via 5042 AcpiOsGetThreadId). 5043 Lin Ming, Bob Moore. 5044 5045 Added the ACPI_INLINE type to enhance the ACPICA configuration. The 5046 "inline" 5047 keyword is not standard across compilers, and this type allows inline to 5048 be 5049 configured on a per-compiler basis. Lin Ming. 5050 5051 Made the system global AcpiGbl_SystemAwakeAndRunning publically 5052 available. 5053 Added an extern for this boolean in acpixf.h. Some hosts utilize this 5054 value 5055 during suspend/restore operations. ACPICA BZ 869. 5056 5057 All code that implements error/warning messages with the "ACPI:" prefix 5058 has 5059 been moved to a new module, utxferror.c. 5060 5061 The UINT64_OVERLAY was moved to utmath.c, which is the only module where 5062 it 5063 is used. ACPICA BZ 829. Lin Ming, Bob Moore. 5064 5065 Example Code and Data Size: These are the sizes for the OS-independent 5066 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5067 debug version of the code includes the debug output trace mechanism and 5068 has a 5069 much larger code and data size. 5070 5071 Previous Release: 5072 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 5073 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 5074 Current Release: 5075 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 5076 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 5077 5078 2) iASL Compiler/Disassembler and Tools: 5079 5080 iASL/Disassembler: Write ACPI errors to stderr instead of the output 5081 file. 5082 This keeps the output files free of random error messages that may 5083 originate 5084 from within the namespace/interpreter code. Used this opportunity to 5085 merge 5086 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 5087 866. Lin Ming, Bob Moore. 5088 5089 Tools: update some printfs for ansi warnings on size_t. Handle width 5090 change 5091 of size_t on 32-bit versus 64-bit generations. Lin Ming. 5092 5093 ---------------------------------------- 5094 06 August 2010. Summary of changes for version 20100806: 5095 5096 1) ACPI CA Core Subsystem: 5097 5098 Designed and implemented a new host interface to the _OSI support code. 5099 This 5100 will allow the host to dynamically add or remove multiple _OSI strings, 5101 as 5102 well as install an optional handler that is called for each _OSI 5103 invocation. 5104 Also added a new AML debugger command, 'osi' to display and modify the 5105 global 5106 _OSI string table, and test support in the AcpiExec utility. See the 5107 ACPICA 5108 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 5109 New Functions: 5110 AcpiInstallInterface - Add an _OSI string. 5111 AcpiRemoveInterface - Delete an _OSI string. 5112 AcpiInstallInterfaceHandler - Install optional _OSI handler. 5113 Obsolete Functions: 5114 AcpiOsValidateInterface - no longer used. 5115 New Files: 5116 source/components/utilities/utosi.c 5117 5118 Re-introduced the support to enable multi-byte transfers for Embedded 5119 Controller (EC) operation regions. A reported problem was found to be a 5120 bug 5121 in the host OS, not in the multi-byte support. Previously, the maximum 5122 data 5123 size passed to the EC operation region handler was a single byte. There 5124 are 5125 often EC Fields larger than one byte that need to be transferred, and it 5126 is 5127 useful for the EC driver to lock these as a single transaction. This 5128 change 5129 enables single transfers larger than 8 bits. This effectively changes the 5130 access to the EC space from ByteAcc to AnyAcc, and will probably require 5131 changes to the host OS Embedded Controller driver to enable 16/32/64/256- 5132 bit 5133 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 5134 5135 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 5136 prototype in acpiosxf.h had the output value pointer as a (void *). 5137 It should be a (UINT64 *). This may affect some host OSL code. 5138 5139 Fixed a couple problems with the recently modified Linux makefiles for 5140 iASL 5141 and AcpiExec. These new makefiles place the generated object files in the 5142 local directory so that there can be no collisions between the files that 5143 are 5144 shared between them that are compiled with different options. 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: 88.3K Code, 18.8K Data, 107.1K Total 5154 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 5155 Current Release: 5156 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 5157 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 5158 5159 2) iASL Compiler/Disassembler and Tools: 5160 5161 iASL/Disassembler: Added a new option (-da, "disassemble all") to load 5162 the 5163 namespace from and disassemble an entire group of AML files. Useful for 5164 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) 5165 and 5166 disassembling with one simple command. ACPICA BZ 865. Lin Ming. 5167 5168 iASL: Allow multiple invocations of -e option. This change allows 5169 multiple 5170 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 5171 834. 5172 Lin Ming. 5173 5174 ---------------------------------------- 5175 02 July 2010. Summary of changes for version 20100702: 5176 5177 1) ACPI CA Core Subsystem: 5178 5179 Implemented several updates to the recently added GPE reference count 5180 support. The model for "wake" GPEs is changing to give the host OS 5181 complete 5182 control of these GPEs. Eventually, the ACPICA core will not execute any 5183 _PRW 5184 methods, since the host already must execute them. Also, additional 5185 changes 5186 were made to help ensure that the reference counts are kept in proper 5187 synchronization with reality. Rafael J. Wysocki. 5188 5189 1) Ensure that GPEs are not enabled twice during initialization. 5190 2) Ensure that GPE enable masks stay in sync with the reference count. 5191 3) Do not inadvertently enable GPEs when writing GPE registers. 5192 4) Remove the internal wake reference counter and add new AcpiGpeWakeup 5193 interface. This interface will set or clear individual GPEs for wakeup. 5194 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These 5195 interfaces 5196 are now used for "runtime" GPEs only. 5197 5198 Changed the behavior of the GPE install/remove handler interfaces. The 5199 GPE 5200 is 5201 no longer disabled during this process, as it was found to cause problems 5202 on 5203 some machines. Rafael J. Wysocki. 5204 5205 Reverted a change introduced in version 20100528 to enable Embedded 5206 Controller multi-byte transfers. This change was found to cause problems 5207 with 5208 Index Fields and possibly Bank Fields. It will be reintroduced when these 5209 problems have been resolved. 5210 5211 Fixed a problem with references to Alias objects within Package Objects. 5212 A 5213 reference to an Alias within the definition of a Package was not always 5214 resolved properly. Aliases to objects like Processors, Thermal zones, 5215 etc. 5216 were resolved to the actual object instead of a reference to the object 5217 as 5218 it 5219 should be. Package objects are only allowed to contain integer, string, 5220 buffer, package, and reference objects. Redhat bugzilla 608648. 5221 5222 Example Code and Data Size: These are the sizes for the OS-independent 5223 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5224 debug version of the code includes the debug output trace mechanism and 5225 has a 5226 much larger code and data size. 5227 5228 Previous Release: 5229 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 5230 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 5231 Current Release: 5232 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 5233 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 5234 5235 2) iASL Compiler/Disassembler and Tools: 5236 5237 iASL: Implemented a new compiler subsystem to allow definition and 5238 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. 5239 These 5240 are called "ACPI Data Tables", and the new compiler is the "Data Table 5241 Compiler". This compiler is intended to simplify the existing error-prone 5242 process of creating these tables for the BIOS, as well as allowing the 5243 disassembly, modification, recompilation, and override of existing ACPI 5244 data 5245 tables. See the iASL User Guide for detailed information. 5246 5247 iASL: Implemented a new Template Generator option in support of the new 5248 Data 5249 Table Compiler. This option will create examples of all known ACPI tables 5250 that can be used as the basis for table development. See the iASL 5251 documentation and the -T option. 5252 5253 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 5254 Descriptor Table). 5255 5256 Updated the Linux makefiles for iASL and AcpiExec to place the generated 5257 object files in the local directory so that there can be no collisions 5258 between the shared files between them that are generated with different 5259 options. 5260 5261 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. 5262 Use 5263 the #define __APPLE__ to enable this support. 5264 5265 ---------------------------------------- 5266 28 May 2010. Summary of changes for version 20100528: 5267 5268 Note: The ACPI 4.0a specification was released on April 5, 2010 and is 5269 available at www.acpi.info. This is primarily an errata release. 5270 5271 1) ACPI CA Core Subsystem: 5272 5273 Undefined ACPI tables: We are looking for the definitions for the 5274 following 5275 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 5276 5277 Implemented support to enable multi-byte transfers for Embedded 5278 Controller 5279 (EC) operation regions. Previously, the maximum data size passed to the 5280 EC 5281 operation region handler was a single byte. There are often EC Fields 5282 larger 5283 than one byte that need to be transferred, and it is useful for the EC 5284 driver 5285 to lock these as a single transaction. This change enables single 5286 transfers 5287 larger than 8 bits. This effectively changes the access to the EC space 5288 from 5289 ByteAcc to AnyAcc, and will probably require changes to the host OS 5290 Embedded 5291 Controller driver to enable 16/32/64/256-bit transfers in addition to 8- 5292 bit 5293 transfers. Alexey Starikovskiy, Lin Ming 5294 5295 Implemented a performance enhancement for namespace search and access. 5296 This 5297 change enhances the performance of namespace searches and walks by adding 5298 a 5299 backpointer to the parent in each namespace node. On large namespaces, 5300 this 5301 change can improve overall ACPI performance by up to 9X. Adding a pointer 5302 to 5303 each namespace node increases the overall size of the internal namespace 5304 by 5305 about 5%, since each namespace entry usually consists of both a namespace 5306 node and an ACPI operand object. However, this is the first growth of the 5307 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 5308 5309 Implemented a performance optimization that reduces the number of 5310 namespace 5311 walks. On control method exit, only walk the namespace if the method is 5312 known 5313 to have created namespace objects outside of its local scope. Previously, 5314 the 5315 entire namespace was traversed on each control method exit. This change 5316 can 5317 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob 5318 Moore. 5319 5320 Added support to truncate I/O addresses to 16 bits for Windows 5321 compatibility. 5322 Some ASL code has been seen in the field that inadvertently has bits set 5323 above bit 15. This feature is optional and is enabled if the BIOS 5324 requests 5325 any Windows OSI strings. It can also be enabled by the host OS. Matthew 5326 Garrett, Bob Moore. 5327 5328 Added support to limit the maximum time for the ASL Sleep() operator. To 5329 prevent accidental deep sleeps, limit the maximum time that Sleep() will 5330 actually sleep. Configurable, the default maximum is two seconds. ACPICA 5331 bugzilla 854. 5332 5333 Added run-time validation support for the _WDG and_WED Microsoft 5334 predefined 5335 methods. These objects are defined by "Windows Instrumentation", and are 5336 not 5337 part of the ACPI spec. ACPICA BZ 860. 5338 5339 Expanded all statistic counters used during namespace and device 5340 initialization from 16 to 32 bits in order to support very large 5341 namespaces. 5342 5343 Replaced all instances of %d in printf format specifiers with %u since 5344 nearly 5345 all integers in ACPICA are unsigned. 5346 5347 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly 5348 returned 5349 as AE_NO_HANDLER. 5350 5351 Example Code and Data Size: These are the sizes for the OS-independent 5352 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5353 debug version of the code includes the debug output trace mechanism and 5354 has a 5355 much larger code and data size. 5356 5357 Previous Release: 5358 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 5359 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 5360 Current Release: 5361 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 5362 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 5363 5364 2) iASL Compiler/Disassembler and Tools: 5365 5366 iASL: Added compiler support for the _WDG and_WED Microsoft predefined 5367 methods. These objects are defined by "Windows Instrumentation", and are 5368 not 5369 part of the ACPI spec. ACPICA BZ 860. 5370 5371 AcpiExec: added option to disable the memory tracking mechanism. The -dt 5372 option will disable the tracking mechanism, which improves performance 5373 considerably. 5374 5375 AcpiExec: Restructured the command line options into -d (disable) and -e 5376 (enable) options. 5377 5378 ---------------------------------------- 5379 28 April 2010. Summary of changes for version 20100428: 5380 5381 1) ACPI CA Core Subsystem: 5382 5383 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 5384 including FADT-based and GPE Block Devices, execute any _PRW methods in 5385 the 5386 new table, and process any _Lxx/_Exx GPE methods in the new table. Any 5387 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 5388 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 5389 Devices. Provides compatibility with other ACPI implementations. Two new 5390 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob 5391 Moore. 5392 5393 Fixed a regression introduced in version 20100331 within the table 5394 manager 5395 where initial table loading could fail. This was introduced in the fix 5396 for 5397 AcpiReallocateRootTable. Also, renamed some of fields in the table 5398 manager 5399 data structures to clarify their meaning and use. 5400 5401 Fixed a possible allocation overrun during internal object copy in 5402 AcpiUtCopySimpleObject. The original code did not correctly handle the 5403 case 5404 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 5405 847. 5406 5407 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 5408 possible access beyond end-of-allocation. Also, now fully validate 5409 descriptor 5410 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 5411 5412 Example Code and Data Size: These are the sizes for the OS-independent 5413 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5414 debug version of the code includes the debug output trace mechanism and 5415 has a 5416 much larger code and data size. 5417 5418 Previous Release: 5419 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 5420 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 5421 Current Release: 5422 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 5423 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 5424 5425 2) iASL Compiler/Disassembler and Tools: 5426 5427 iASL: Implemented Min/Max/Len/Gran validation for address resource 5428 descriptors. This change implements validation for the address fields 5429 that 5430 are common to all address-type resource descriptors. These checks are 5431 implemented: Checks for valid Min/Max, length within the Min/Max window, 5432 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as 5433 per 5434 table 6-40 in the ACPI 4.0a specification. Also split the large 5435 aslrestype1.c 5436 and aslrestype2.c files into five new files. ACPICA BZ 840. 5437 5438 iASL: Added support for the _Wxx predefined names. This support was 5439 missing 5440 and these names were not recognized by the compiler as valid predefined 5441 names. ACPICA BZ 851. 5442 5443 iASL: Added an error for all predefined names that are defined to return 5444 no 5445 value and thus must be implemented as Control Methods. These include all 5446 of 5447 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 5448 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 5449 5450 iASL: Implemented the -ts option to emit hex AML data in ASL format, as 5451 an 5452 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to 5453 be 5454 dynamically loaded via the Load() operator. Also cleaned up output for 5455 the 5456 - 5457 ta and -tc options. ACPICA BZ 853. 5458 5459 Tests: Added a new file with examples of extended iASL error checking. 5460 Demonstrates the advanced error checking ability of the iASL compiler. 5461 Available at tests/misc/badcode.asl. 5462 5463 ---------------------------------------- 5464 31 March 2010. Summary of changes for version 20100331: 5465 5466 1) ACPI CA Core Subsystem: 5467 5468 Completed a major update for the GPE support in order to improve support 5469 for 5470 shared GPEs and to simplify both host OS and ACPICA code. Added a 5471 reference 5472 count mechanism to support shared GPEs that require multiple device 5473 drivers. 5474 Several external interfaces have changed. One external interface has been 5475 removed. One new external interface was added. Most of the GPE external 5476 interfaces now use the GPE spinlock instead of the events mutex (and the 5477 Flags parameter for many GPE interfaces has been removed.) See the 5478 updated 5479 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, 5480 Rafael 5481 Wysocki. ACPICA BZ 831. 5482 5483 Changed: 5484 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 5485 Removed: 5486 AcpiSetGpeType 5487 New: 5488 AcpiSetGpe 5489 5490 Implemented write support for DataTable operation regions. These regions 5491 are 5492 defined via the DataTableRegion() operator. Previously, only read support 5493 was 5494 implemented. The ACPI specification allows DataTableRegions to be 5495 read/write, 5496 however. 5497 5498 Implemented a new subsystem option to force a copy of the DSDT to local 5499 memory. Optionally copy the entire DSDT to local memory (instead of 5500 simply 5501 mapping it.) There are some (albeit very rare) BIOSs that corrupt or 5502 replace 5503 the original DSDT, creating the need for this option. Default is FALSE, 5504 do 5505 not copy the DSDT. 5506 5507 Implemented detection of a corrupted or replaced DSDT. This change adds 5508 support to detect a DSDT that has been corrupted and/or replaced from 5509 outside 5510 the OS (by firmware). This is typically catastrophic for the system, but 5511 has 5512 been seen on some machines. Once this problem has been detected, the DSDT 5513 copy option can be enabled via system configuration. Lin Ming, Bob Moore. 5514 5515 Fixed two problems with AcpiReallocateRootTable during the root table 5516 copy. 5517 When copying the root table to the new allocation, the length used was 5518 incorrect. The new size was used instead of the current table size, 5519 meaning 5520 too much data was copied. Also, the count of available slots for ACPI 5521 tables 5522 was not set correctly. Alexey Starikovskiy, Bob Moore. 5523 5524 Example Code and Data Size: These are the sizes for the OS-independent 5525 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5526 debug version of the code includes the debug output trace mechanism and 5527 has a 5528 much larger code and data size. 5529 5530 Previous Release: 5531 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 5532 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 5533 Current Release: 5534 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 5535 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 5536 5537 2) iASL Compiler/Disassembler and Tools: 5538 5539 iASL: Implement limited typechecking for values returned from predefined 5540 control methods. The type of any returned static (unnamed) object is now 5541 validated. For example, Return(1). ACPICA BZ 786. 5542 5543 iASL: Fixed a predefined name object verification regression. Fixes a 5544 problem 5545 introduced in version 20100304. An error is incorrectly generated if a 5546 predefined name is declared as a static named object with a value defined 5547 using the keywords "Zero", "One", or "Ones". Lin Ming. 5548 5549 iASL: Added Windows 7 support for the -g option (get local ACPI tables) 5550 by 5551 reducing the requested registry access rights. ACPICA BZ 842. 5552 5553 Disassembler: fixed a possible fault when generating External() 5554 statements. 5555 Introduced in commit ae7d6fd: Properly handle externals with parent- 5556 prefix 5557 (carat). Fixes a string length allocation calculation. Lin Ming. 5558 5559 ---------------------------------------- 5560 04 March 2010. Summary of changes for version 20100304: 5561 5562 1) ACPI CA Core Subsystem: 5563 5564 Fixed a possible problem with the AML Mutex handling function 5565 AcpiExReleaseMutex where the function could fault under the very rare 5566 condition when the interpreter has blocked, the interpreter lock is 5567 released, 5568 the interpreter is then reentered via the same thread, and attempts to 5569 acquire an AML mutex that was previously acquired. FreeBSD report 140979. 5570 Lin 5571 Ming. 5572 5573 Implemented additional configuration support for the AML "Debug Object". 5574 Output from the debug object can now be enabled via a global variable, 5575 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine 5576 debugging. 5577 This debug output is now available in the release version of ACPICA 5578 instead 5579 of just the debug version. Also, the entire debug output module can now 5580 be 5581 configured out of the ACPICA build if desired. One new file added, 5582 executer/exdebug.c. Lin Ming, Bob Moore. 5583 5584 Added header support for the ACPI MCHI table (Management Controller Host 5585 Interface Table). This table was added in ACPI 4.0, but the defining 5586 document 5587 has only recently become available. 5588 5589 Standardized output of integer values for ACPICA warnings/errors. Always 5590 use 5591 0x prefix for hex output, always use %u for unsigned integer decimal 5592 output. 5593 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 5594 400 5595 invocations.) These invocations were converted from the original 5596 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 5597 5598 Example Code and Data Size: These are the sizes for the OS-independent 5599 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5600 debug version of the code includes the debug output trace mechanism and 5601 has a 5602 much larger code and data size. 5603 5604 Previous Release: 5605 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 5606 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 5607 Current Release: 5608 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 5609 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 5610 5611 2) iASL Compiler/Disassembler and Tools: 5612 5613 iASL: Implemented typechecking support for static (non-control method) 5614 predefined named objects that are declared with the Name() operator. For 5615 example, the type of this object is now validated to be of type Integer: 5616 Name(_BBN, 1). This change migrates the compiler to using the core 5617 predefined 5618 name table instead of maintaining a local version. Added a new file, 5619 aslpredef.c. ACPICA BZ 832. 5620 5621 Disassembler: Added support for the ACPI 4.0 MCHI table. 5622 5623 ---------------------------------------- 5624 21 January 2010. Summary of changes for version 20100121: 5625 5626 1) ACPI CA Core Subsystem: 5627 5628 Added the 2010 copyright to all module headers and signons. This affects 5629 virtually every file in the ACPICA core subsystem, the iASL compiler, the 5630 tools/utilities, and the test suites. 5631 5632 Implemented a change to the AcpiGetDevices interface to eliminate 5633 unnecessary 5634 invocations of the _STA method. In the case where a specific _HID is 5635 requested, do not run _STA until a _HID match is found. This eliminates 5636 potentially dozens of _STA calls during a search for a particular 5637 device/HID, 5638 which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 5639 5640 Implemented an additional repair for predefined method return values. 5641 Attempt 5642 to repair unexpected NULL elements within returned Package objects. 5643 Create 5644 an 5645 Integer of value zero, a NULL String, or a zero-length Buffer as 5646 appropriate. 5647 ACPICA BZ 818. Lin Ming, Bob Moore. 5648 5649 Removed the obsolete ACPI_INTEGER data type. This type was introduced as 5650 the 5651 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 5652 (with 5653 64-bit AML integers). It is now obsolete and this change removes it from 5654 the 5655 ACPICA code base, replaced by UINT64. The original typedef has been 5656 retained 5657 for now for compatibility with existing device driver code. ACPICA BZ 5658 824. 5659 5660 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field 5661 in 5662 the parse tree object. 5663 5664 Added additional warning options for the gcc-4 generation. Updated the 5665 source 5666 accordingly. This includes some code restructuring to eliminate 5667 unreachable 5668 code, elimination of some gotos, elimination of unused return values, 5669 some 5670 additional casting, and removal of redundant declarations. 5671 5672 Example Code and Data Size: These are the sizes for the OS-independent 5673 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5674 debug version of the code includes the debug output trace mechanism and 5675 has a 5676 much larger code and data size. 5677 5678 Previous Release: 5679 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 5680 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 5681 Current Release: 5682 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 5683 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 5684 5685 2) iASL Compiler/Disassembler and Tools: 5686 5687 No functional changes for this release. 5688 5689 ---------------------------------------- 5690 14 December 2009. Summary of changes for version 20091214: 5691 5692 1) ACPI CA Core Subsystem: 5693 5694 Enhanced automatic data type conversions for predefined name repairs. 5695 This 5696 change expands the automatic repairs/conversions for predefined name 5697 return 5698 values to make Integers, Strings, and Buffers fully interchangeable. 5699 Also, 5700 a 5701 Buffer can be converted to a Package of Integers if necessary. The 5702 nsrepair.c 5703 module was completely restructured. Lin Ming, Bob Moore. 5704 5705 Implemented automatic removal of null package elements during predefined 5706 name 5707 repairs. This change will automatically remove embedded and trailing NULL 5708 package elements from returned package objects that are defined to 5709 contain 5710 a 5711 variable number of sub-packages. The driver is then presented with a 5712 package 5713 with no null elements to deal with. ACPICA BZ 819. 5714 5715 Implemented a repair for the predefined _FDE and _GTM names. The expected 5716 return value for both names is a Buffer of 5 DWORDs. This repair fixes 5717 two 5718 possible problems (both seen in the field), where a package of integers 5719 is 5720 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk 5721 Kim. 5722 5723 Implemented additional module-level code support. This change will 5724 properly 5725 execute module-level code that is not at the root of the namespace (under 5726 a 5727 Device object, etc.). Now executes the code within the current scope 5728 instead 5729 of the root. ACPICA BZ 762. Lin Ming. 5730 5731 Fixed possible mutex acquisition errors when running _REG methods. Fixes 5732 a 5733 problem where mutex errors can occur when running a _REG method that is 5734 in 5735 the same scope as a method-defined operation region or an operation 5736 region 5737 under a module-level IF block. This type of code is rare, so the problem 5738 has 5739 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 5740 5741 Fixed a possible memory leak during module-level code execution. An 5742 object 5743 could be leaked for each block of executed module-level code if the 5744 interpreter slack mode is enabled This change deletes any implicitly 5745 returned 5746 object from the module-level code block. Lin Ming. 5747 5748 Removed messages for successful predefined repair(s). The repair 5749 mechanism 5750 was considered too wordy. Now, messages are only unconditionally emitted 5751 if 5752 the return object cannot be repaired. Existing messages for successful 5753 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 5754 827. 5755 5756 Example Code and Data Size: These are the sizes for the OS-independent 5757 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5758 debug version of the code includes the debug output trace mechanism and 5759 has a 5760 much larger code and data size. 5761 5762 Previous Release: 5763 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 5764 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 5765 Current Release: 5766 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 5767 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 5768 5769 2) iASL Compiler/Disassembler and Tools: 5770 5771 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC 5772 files 5773 were no longer automatically removed at the termination of the compile. 5774 5775 acpiexec: Implemented the -f option to specify default region fill value. 5776 This option specifies the value used to initialize buffers that simulate 5777 operation regions. Default value is zero. Useful for debugging problems 5778 that 5779 depend on a specific initial value for a region or field. 5780 5781 ---------------------------------------- 5782 12 November 2009. Summary of changes for version 20091112: 5783 5784 1) ACPI CA Core Subsystem: 5785 5786 Implemented a post-order callback to AcpiWalkNamespace. The existing 5787 interface only has a pre-order callback. This change adds an additional 5788 parameter for a post-order callback which will be more useful for bus 5789 scans. 5790 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 5791 5792 Modified the behavior of the operation region memory mapping cache for 5793 SystemMemory. Ensure that the memory mappings created for operation 5794 regions 5795 do not cross 4K page boundaries. Crossing a page boundary while mapping 5796 regions can cause kernel warnings on some hosts if the pages have 5797 different 5798 attributes. Such regions are probably BIOS bugs, and this is the 5799 workaround. 5800 Linux BZ 14445. Lin Ming. 5801 5802 Implemented an automatic repair for predefined methods that must return 5803 sorted lists. This change will repair (by sorting) packages returned by 5804 _ALR, 5805 _PSS, and _TSS. Drivers can now assume that the packages are correctly 5806 sorted 5807 and do not contain NULL package elements. Adds one new file, 5808 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 5809 5810 Fixed a possible fault during predefined name validation if a return 5811 Package 5812 object contains NULL elements. Also adds a warning if a NULL element is 5813 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement 5814 may 5815 include repair or removal of all such NULL elements where possible. 5816 5817 Implemented additional module-level executable AML code support. This 5818 change 5819 will execute module-level code that is not at the root of the namespace 5820 (under a Device object, etc.) at table load time. Module-level executable 5821 AML 5822 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 5823 5824 Implemented a new internal function to create Integer objects. This 5825 function 5826 simplifies miscellaneous object creation code. ACPICA BZ 823. 5827 5828 Reduced the severity of predefined repair messages, Warning to Info. 5829 Since 5830 the object was successfully repaired, a warning is too severe. Reduced to 5831 an 5832 info message for now. These messages may eventually be changed to debug- 5833 only. 5834 ACPICA BZ 812. 5835 5836 Example Code and Data Size: These are the sizes for the OS-independent 5837 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5838 debug version of the code includes the debug output trace mechanism and 5839 has a 5840 much larger code and data size. 5841 5842 Previous Release: 5843 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 5844 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 5845 Current Release: 5846 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 5847 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 5848 5849 2) iASL Compiler/Disassembler and Tools: 5850 5851 iASL: Implemented Switch() with While(1) so that Break works correctly. 5852 This 5853 change correctly implements the Switch operator with a surrounding 5854 While(1) 5855 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 5856 5857 iASL: Added a message if a package initializer list is shorter than 5858 package 5859 length. Adds a new remark for a Package() declaration if an initializer 5860 list 5861 exists, but is shorter than the declared length of the package. Although 5862 technically legal, this is probably a coding error and it is seen in the 5863 field. ACPICA BZ 815. Lin Ming, Bob Moore. 5864 5865 iASL: Fixed a problem where the compiler could fault after the maximum 5866 number 5867 of errors was reached (200). 5868 5869 acpixtract: Fixed a possible warning for pointer cast if the compiler 5870 warning 5871 level set very high. 5872 5873 ---------------------------------------- 5874 13 October 2009. Summary of changes for version 20091013: 5875 5876 1) ACPI CA Core Subsystem: 5877 5878 Fixed a problem where an Operation Region _REG method could be executed 5879 more 5880 than once. If a custom address space handler is installed by the host 5881 before 5882 the "initialize operation regions" phase of the ACPICA initialization, 5883 any 5884 _REG methods for that address space could be executed twice. This change 5885 fixes the problem. ACPICA BZ 427. Lin Ming. 5886 5887 Fixed a possible memory leak for the Scope() ASL operator. When the exact 5888 invocation of "Scope(\)" is executed (change scope to root), one internal 5889 operand object was leaked. Lin Ming. 5890 5891 Implemented a run-time repair for the _MAT predefined method. If the _MAT 5892 return value is defined as a Field object in the AML, and the field 5893 size is less than or equal to the default width of an integer (32 or 5894 64),_MAT 5895 can incorrectly return an Integer instead of a Buffer. ACPICA now 5896 automatically repairs this problem. ACPICA BZ 810. 5897 5898 Implemented a run-time repair for the _BIF and _BIX predefined methods. 5899 The 5900 "OEM Information" field is often incorrectly returned as an Integer with 5901 value zero if the field is not supported by the platform. This is due to 5902 an 5903 ambiguity in the ACPI specification. The field should always be a string. 5904 ACPICA now automatically repairs this problem by returning a NULL string 5905 within the returned Package. ACPICA BZ 807. 5906 5907 Example Code and Data Size: These are the sizes for the OS-independent 5908 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5909 debug version of the code includes the debug output trace mechanism and 5910 has a 5911 much larger code and data size. 5912 5913 Previous Release: 5914 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 5915 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 5916 Current Release: 5917 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 5918 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 5919 5920 2) iASL Compiler/Disassembler and Tools: 5921 5922 Disassembler: Fixed a problem where references to external symbols that 5923 contained one or more parent-prefixes (carats) were not handled 5924 correctly, 5925 possibly causing a fault. ACPICA BZ 806. Lin Ming. 5926 5927 Disassembler: Restructured the code so that all functions that handle 5928 external symbols are in a single module. One new file is added, 5929 common/dmextern.c. 5930 5931 AML Debugger: Added a max count argument for the Batch command (which 5932 executes multiple predefined methods within the namespace.) 5933 5934 iASL: Updated the compiler documentation (User Reference.) Available at 5935 http://www.acpica.org/documentation/. ACPICA BZ 750. 5936 5937 AcpiXtract: Updated for Lint and other formatting changes. Close all open 5938 files. 5939 5940 ---------------------------------------- 5941 03 September 2009. Summary of changes for version 20090903: 5942 5943 1) ACPI CA Core Subsystem: 5944 5945 For Windows Vista compatibility, added the automatic execution of an _INI 5946 method located at the namespace root (\_INI). This method is executed at 5947 table load time. This support is in addition to the automatic execution 5948 of 5949 \_SB._INI. Lin Ming. 5950 5951 Fixed a possible memory leak in the interpreter for AML package objects 5952 if 5953 the package initializer list is longer than the defined size of the 5954 package. 5955 This apparently can only happen if the BIOS changes the package size on 5956 the 5957 fly (seen in a _PSS object), as ASL compilers do not allow this. The 5958 interpreter will truncate the package to the defined size (and issue an 5959 error 5960 message), but previously could leave the extra objects undeleted if they 5961 were 5962 pre-created during the argument processing (such is the case if the 5963 package 5964 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 5965 5966 Fixed a problem seen when a Buffer or String is stored to itself via ASL. 5967 This has been reported in the field. Previously, ACPICA would zero out 5968 the 5969 buffer/string. Now, the operation is treated as a noop. Provides Windows 5970 compatibility. ACPICA BZ 803. Lin Ming. 5971 5972 Removed an extraneous error message for ASL constructs of the form 5973 Store(LocalX,LocalX) when LocalX is uninitialized. These curious 5974 statements 5975 are seen in many BIOSs and are once again treated as NOOPs and no error 5976 is 5977 emitted when they are encountered. ACPICA BZ 785. 5978 5979 Fixed an extraneous warning message if a _DSM reserved method returns a 5980 Package object. _DSM can return any type of object, so validation on the 5981 return type cannot be performed. ACPICA BZ 802. 5982 5983 Example Code and Data Size: These are the sizes for the OS-independent 5984 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5985 debug version of the code includes the debug output trace mechanism and 5986 has a 5987 much larger code and data size. 5988 5989 Previous Release: 5990 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 5991 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 5992 Current Release: 5993 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 5994 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 5995 5996 2) iASL Compiler/Disassembler and Tools: 5997 5998 iASL: Fixed a problem with the use of the Alias operator and Resource 5999 Templates. The correct alias is now constructed and no error is emitted. 6000 ACPICA BZ 738. 6001 6002 iASL: Implemented the -I option to specify additional search directories 6003 for 6004 include files. Allows multiple additional search paths for include files. 6005 Directories are searched in the order specified on the command line 6006 (after 6007 the local directory is searched.) ACPICA BZ 800. 6008 6009 iASL: Fixed a problem where the full pathname for include files was not 6010 emitted for warnings/errors. This caused the IDE support to not work 6011 properly. ACPICA BZ 765. 6012 6013 iASL: Implemented the -@ option to specify a Windows-style response file 6014 containing additional command line options. ACPICA BZ 801. 6015 6016 AcpiExec: Added support to load multiple AML files simultaneously (such 6017 as 6018 a 6019 DSDT and multiple SSDTs). Also added support for wildcards within the AML 6020 pathname. These features allow all machine tables to be easily loaded and 6021 debugged together. ACPICA BZ 804. 6022 6023 Disassembler: Added missing support for disassembly of HEST table Error 6024 Bank 6025 subtables. 6026 6027 ---------------------------------------- 6028 30 July 2009. Summary of changes for version 20090730: 6029 6030 The ACPI 4.0 implementation for ACPICA is complete with this release. 6031 6032 1) ACPI CA Core Subsystem: 6033 6034 ACPI 4.0: Added header file support for all new and changed ACPI tables. 6035 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are 6036 new 6037 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, 6038 BERT, 6039 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. 6040 There 6041 have been some ACPI 4.0 changes to other existing tables. Split the large 6042 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 6043 6044 ACPI 4.0: Implemented predefined name validation for all new names. There 6045 are 6046 31 new names in ACPI 4.0. The predefined validation module was split into 6047 two 6048 files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 6049 6050 Implemented support for so-called "module-level executable code". This is 6051 executable AML code that exists outside of any control method and is 6052 intended 6053 to be executed at table load time. Although illegal since ACPI 2.0, this 6054 type 6055 of code still exists and is apparently still being created. Blocks of 6056 this 6057 code are now detected and executed as intended. Currently, the code 6058 blocks 6059 must exist under either an If, Else, or While construct; these are the 6060 typical cases seen in the field. ACPICA BZ 762. Lin Ming. 6061 6062 Implemented an automatic dynamic repair for predefined names that return 6063 nested Package objects. This applies to predefined names that are defined 6064 to 6065 return a variable-length Package of sub-packages. If the number of sub- 6066 packages is one, BIOS code is occasionally seen that creates a simple 6067 single 6068 package with no sub-packages. This code attempts to fix the problem by 6069 wrapping a new package object around the existing package. These methods 6070 can 6071 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA 6072 BZ 6073 790. 6074 6075 Fixed a regression introduced in 20090625 for the AcpiGetDevices 6076 interface. 6077 The _HID/_CID matching was broken and no longer matched IDs correctly. 6078 ACPICA 6079 BZ 793. 6080 6081 Fixed a problem with AcpiReset where the reset would silently fail if the 6082 register was one of the protected I/O ports. AcpiReset now bypasses the 6083 port 6084 validation mechanism. This may eventually be driven into the 6085 AcpiRead/Write 6086 interfaces. 6087 6088 Fixed a regression related to the recent update of the AcpiRead/Write 6089 interfaces. A sleep/suspend could fail if the optional PM2 Control 6090 register 6091 does not exist during an attempt to write the Bus Master Arbitration bit. 6092 (However, some hosts already delete the code that writes this bit, and 6093 the 6094 code may in fact be obsolete at this date.) ACPICA BZ 799. 6095 6096 Fixed a problem where AcpiTerminate could fault if inadvertently called 6097 twice 6098 in succession. ACPICA BZ 795. 6099 6100 Example Code and Data Size: These are the sizes for the OS-independent 6101 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6102 debug version of the code includes the debug output trace mechanism and 6103 has a 6104 much larger code and data size. 6105 6106 Previous Release: 6107 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 6108 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 6109 Current Release: 6110 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 6111 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 6112 6113 2) iASL Compiler/Disassembler and Tools: 6114 6115 ACPI 4.0: Implemented disassembler support for all new ACPI tables and 6116 changes to existing tables. ACPICA BZ 775. 6117 6118 ---------------------------------------- 6119 25 June 2009. Summary of changes for version 20090625: 6120 6121 The ACPI 4.0 Specification was released on June 16 and is available at 6122 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 6123 continue for the next few releases. 6124 6125 1) ACPI CA Core Subsystem: 6126 6127 ACPI 4.0: Implemented interpreter support for the IPMI operation region 6128 address space. Includes support for bi-directional data buffers and an 6129 IPMI 6130 address space handler (to be installed by an IPMI device driver.) ACPICA 6131 BZ 6132 773. Lin Ming. 6133 6134 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. 6135 Includes 6136 support in both the header files and the disassembler. 6137 6138 Completed a major update for the AcpiGetObjectInfo external interface. 6139 Changes include: 6140 - Support for variable, unlimited length HID, UID, and CID strings. 6141 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, 6142 etc.) 6143 - Call the _SxW power methods on behalf of a device object. 6144 - Determine if a device is a PCI root bridge. 6145 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 6146 These changes will require an update to all callers of this interface. 6147 See 6148 the updated ACPICA Programmer Reference for details. One new source file 6149 has 6150 been added - utilities/utids.c. ACPICA BZ 368, 780. 6151 6152 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 6153 transfers. The Value parameter has been extended from 32 bits to 64 bits 6154 in 6155 order to support new ACPI 4.0 tables. These changes will require an 6156 update 6157 to 6158 all callers of these interfaces. See the ACPICA Programmer Reference for 6159 details. ACPICA BZ 768. 6160 6161 Fixed several problems with AcpiAttachData. The handler was not invoked 6162 when 6163 the host node was deleted. The data sub-object was not automatically 6164 deleted 6165 when the host node was deleted. The interface to the handler had an 6166 unused 6167 parameter, this was removed. ACPICA BZ 778. 6168 6169 Enhanced the function that dumps ACPI table headers. All non-printable 6170 characters in the string fields are now replaced with '?' (Signature, 6171 OemId, 6172 OemTableId, and CompilerId.) ACPI tables with non-printable characters in 6173 these fields are occasionally seen in the field. ACPICA BZ 788. 6174 6175 Fixed a problem with predefined method repair code where the code that 6176 attempts to repair/convert an object of incorrect type is only executed 6177 on 6178 the first time the predefined method is called. The mechanism that 6179 disables 6180 warnings on subsequent calls was interfering with the repair mechanism. 6181 ACPICA BZ 781. 6182 6183 Fixed a possible memory leak in the predefined validation/repair code 6184 when 6185 a 6186 buffer is automatically converted to an expected string object. 6187 6188 Removed obsolete 16-bit files from the distribution and from the current 6189 git 6190 tree head. ACPICA BZ 776. 6191 6192 Example Code and Data Size: These are the sizes for the OS-independent 6193 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6194 debug version of the code includes the debug output trace mechanism and 6195 has a 6196 much larger code and data size. 6197 6198 Previous Release: 6199 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 6200 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 6201 Current Release: 6202 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 6203 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 6204 6205 2) iASL Compiler/Disassembler and Tools: 6206 6207 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 6208 operation region keyword. ACPICA BZ 771, 772. Lin Ming. 6209 6210 ACPI 4.0: iASL - implemented compile-time validation support for all new 6211 predefined names and control methods (31 total). ACPICA BZ 769. 6212 6213 ---------------------------------------- 6214 21 May 2009. Summary of changes for version 20090521: 6215 6216 1) ACPI CA Core Subsystem: 6217 6218 Disabled the preservation of the SCI enable bit in the PM1 control 6219 register. 6220 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification 6221 to 6222 be 6223 a "preserved" bit - "OSPM always preserves this bit position", section 6224 4.7.3.2.1. However, some machines fail if this bit is in fact preserved 6225 because the bit needs to be explicitly set by the OS as a workaround. No 6226 machines fail if the bit is not preserved. Therefore, ACPICA no longer 6227 attempts to preserve this bit. 6228 6229 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 6230 incorrectly formed _PRT package could cause a fault. Added validation to 6231 ensure that each package element is actually a sub-package. 6232 6233 Implemented a new interface to install or override a single control 6234 method, 6235 AcpiInstallMethod. This interface is useful when debugging in order to 6236 repair 6237 an existing method or to install a missing method without having to 6238 override 6239 the entire ACPI table. See the ACPICA Programmer Reference for use and 6240 examples. Lin Ming, Bob Moore. 6241 6242 Fixed several reference count issues with the DdbHandle object that is 6243 created from a Load or LoadTable operator. Prevent premature deletion of 6244 the 6245 object. Also, mark the object as invalid once the table has been 6246 unloaded. 6247 This is needed because the handle itself may not be deleted after the 6248 table 6249 unload, depending on whether it has been stored in a named object by the 6250 caller. Lin Ming. 6251 6252 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 6253 mutexes of the same sync level are acquired but then not released in 6254 strict 6255 opposite order, the internally maintained Current Sync Level becomes 6256 confused 6257 and can cause subsequent execution errors. ACPICA BZ 471. 6258 6259 Changed the allowable release order for ASL mutex objects. The ACPI 4.0 6260 specification has been changed to make the SyncLevel for mutex objects 6261 more 6262 useful. When releasing a mutex, the SyncLevel of the mutex must now be 6263 the 6264 same as the current sync level. This makes more sense than the previous 6265 rule 6266 (SyncLevel less than or equal). This change updates the code to match the 6267 specification. 6268 6269 Fixed a problem with the local version of the AcpiOsPurgeCache function. 6270 The 6271 (local) cache must be locked during all cache object deletions. Andrew 6272 Baumann. 6273 6274 Updated the Load operator to use operation region interfaces. This 6275 replaces 6276 direct memory mapping with region access calls. Now, all region accesses 6277 go 6278 through the installed region handler as they should. 6279 6280 Simplified and optimized the NsGetNextNode function. Reduced parameter 6281 count 6282 and reduced code for this frequently used function. 6283 6284 Example Code and Data Size: These are the sizes for the OS-independent 6285 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6286 debug version of the code includes the debug output trace mechanism and 6287 has a 6288 much larger code and data size. 6289 6290 Previous Release: 6291 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 6292 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 6293 Current Release: 6294 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 6295 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 6296 6297 2) iASL Compiler/Disassembler and Tools: 6298 6299 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some 6300 problems 6301 with sub-table disassembly and handling invalid sub-tables. Attempt 6302 recovery 6303 after an invalid sub-table ID. 6304 6305 ---------------------------------------- 6306 22 April 2009. Summary of changes for version 20090422: 6307 6308 1) ACPI CA Core Subsystem: 6309 6310 Fixed a compatibility issue with the recently released I/O port 6311 protection 6312 mechanism. For windows compatibility, 1) On a port protection violation, 6313 simply ignore the request and do not return an exception (allow the 6314 control 6315 method to continue execution.) 2) If only part of the request overlaps a 6316 protected port, read/write the individual ports that are not protected. 6317 Linux 6318 BZ 13036. Lin Ming 6319 6320 Enhanced the execution of the ASL/AML BreakPoint operator so that it 6321 actually 6322 breaks into the AML debugger if the debugger is present. This matches the 6323 ACPI-defined behavior. 6324 6325 Fixed several possible warnings related to the use of the configurable 6326 ACPI_THREAD_ID. This type can now be configured as either an integer or a 6327 pointer with no warnings. Also fixes several warnings in printf-like 6328 statements for the 64-bit build when the type is configured as a pointer. 6329 ACPICA BZ 766, 767. 6330 6331 Fixed a number of possible warnings when compiling with gcc 4+ (depending 6332 on 6333 warning options.) Examples include printf formats, aliasing, unused 6334 globals, 6335 missing prototypes, missing switch default statements, use of non-ANSI 6336 library functions, use of non-ANSI constructs. See generate/unix/Makefile 6337 for 6338 a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 6339 6340 Example Code and Data Size: These are the sizes for the OS-independent 6341 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6342 debug version of the code includes the debug output trace mechanism and 6343 has a 6344 much larger code and data size. 6345 6346 Previous Release: 6347 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 6348 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 6349 Current Release: 6350 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 6351 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 6352 6353 2) iASL Compiler/Disassembler and Tools: 6354 6355 iASL: Fixed a generation warning from Bison 2.3 and fixed several 6356 warnings 6357 on 6358 the 64-bit build. 6359 6360 iASL: Fixed a problem where the Unix/Linux versions of the compiler could 6361 not 6362 correctly digest Windows/DOS formatted files (with CR/LF). 6363 6364 iASL: Added a new option for "quiet mode" (-va) that produces only the 6365 compilation summary, not individual errors and warnings. Useful for large 6366 batch compilations. 6367 6368 AcpiExec: Implemented a new option (-z) to enable a forced 6369 semaphore/mutex 6370 timeout that can be used to detect hang conditions during execution of 6371 AML 6372 code (includes both internal semaphores and AML-defined mutexes and 6373 events.) 6374 6375 Added new makefiles for the generation of acpica in a generic unix-like 6376 environment. These makefiles are intended to generate the acpica tools 6377 and 6378 utilities from the original acpica git source tree structure. 6379 6380 Test Suites: Updated and cleaned up the documentation files. Updated the 6381 copyrights to 2009, affecting all source files. Use the new version of 6382 iASL 6383 with quiet mode. Increased the number of available semaphores in the 6384 Windows 6385 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, 6386 added 6387 an alternate implementation of the semaphore timeout to allow aslts to 6388 execute fully on Cygwin. 6389 6390 ---------------------------------------- 6391 20 March 2009. Summary of changes for version 20090320: 6392 6393 1) ACPI CA Core Subsystem: 6394 6395 Fixed a possible race condition between AcpiWalkNamespace and dynamic 6396 table 6397 unloads. Added a reader/writer locking mechanism to allow multiple 6398 concurrent 6399 namespace walks (readers), but block a dynamic table unload until it can 6400 gain 6401 exclusive write access to the namespace. This fixes a problem where a 6402 table 6403 unload could (possibly catastrophically) delete the portion of the 6404 namespace 6405 that is currently being examined by a walk. Adds a new file, utlock.c, 6406 that 6407 implements the reader/writer lock mechanism. ACPICA BZ 749. 6408 6409 Fixed a regression introduced in version 20090220 where a change to the 6410 FADT 6411 handling could cause the ACPICA subsystem to access non-existent I/O 6412 ports. 6413 6414 Modified the handling of FADT register and table (FACS/DSDT) addresses. 6415 The 6416 FADT can contain both 32-bit and 64-bit versions of these addresses. 6417 Previously, the 64-bit versions were favored, meaning that if both 32 and 6418 64 6419 versions were valid, but not equal, the 64-bit version was used. This was 6420 found to cause some machines to fail. Now, in this case, the 32-bit 6421 version 6422 is used instead. This now matches the Windows behavior. 6423 6424 Implemented a new mechanism to protect certain I/O ports. Provides 6425 Microsoft 6426 compatibility and protects the standard PC I/O ports from access via AML 6427 code. Adds a new file, hwvalid.c 6428 6429 Fixed a possible extraneous warning message from the FADT support. The 6430 message warns of a 32/64 length mismatch between the legacy and GAS 6431 definitions for a register. 6432 6433 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface 6434 is 6435 made obsolete by the port protection mechanism above. It was previously 6436 used 6437 to validate the entire address range of an operation region, which could 6438 be 6439 incorrect if the range included illegal ports, but fields within the 6440 operation region did not actually access those ports. Validation is now 6441 performed on a per-field basis instead of the entire region. 6442 6443 Modified the handling of the PM1 Status Register ignored bit (bit 11.) 6444 Ignored bits must be "preserved" according to the ACPI spec. Usually, 6445 this 6446 means a read/modify/write when writing to the register. However, for 6447 status 6448 registers, writing a one means clear the event. Writing a zero means 6449 preserve 6450 the event (do not clear.) This behavior is clarified in the ACPI 4.0 6451 spec, 6452 and the ACPICA code now simply always writes a zero to the ignored bit. 6453 6454 Modified the handling of ignored bits for the PM1 A/B Control Registers. 6455 As 6456 per the ACPI specification, for the control registers, preserve 6457 (read/modify/write) all bits that are defined as either reserved or 6458 ignored. 6459 6460 Updated the handling of write-only bits in the PM1 A/B Control Registers. 6461 When reading the register, zero the write-only bits as per the ACPI spec. 6462 ACPICA BZ 443. Lin Ming. 6463 6464 Removed "Linux" from the list of supported _OSI strings. Linux no longer 6465 wants to reply true to this request. The Windows strings are the only 6466 paths 6467 through the AML that are tested and known to work properly. 6468 6469 Previous Release: 6470 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 6471 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 6472 Current Release: 6473 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 6474 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 6475 6476 2) iASL Compiler/Disassembler and Tools: 6477 6478 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c 6479 and 6480 aetables.c 6481 6482 ---------------------------------------- 6483 20 February 2009. Summary of changes for version 20090220: 6484 6485 1) ACPI CA Core Subsystem: 6486 6487 Optimized the ACPI register locking. Removed locking for reads from the 6488 ACPI 6489 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock 6490 is 6491 not required when reading the single-bit registers. The 6492 AcpiGetRegisterUnlocked function is no longer needed and has been 6493 removed. 6494 This will improve performance for reads on these registers. ACPICA BZ 6495 760. 6496 6497 Fixed the parameter validation for AcpiRead/Write. Now return 6498 AE_BAD_PARAMETER if the input register pointer is null, and 6499 AE_BAD_ADDRESS 6500 if 6501 the register has an address of zero. Previously, these cases simply 6502 returned 6503 AE_OK. For optional registers such as PM1B status/enable/control, the 6504 caller 6505 should check for a valid register address before calling. ACPICA BZ 748. 6506 6507 Renamed the external ACPI bit register access functions. Renamed 6508 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 6509 functions. The new names are AcpiReadBitRegister and 6510 AcpiWriteBitRegister. 6511 Also, restructured the code for these functions by simplifying the code 6512 path 6513 and condensing duplicate code to reduce code size. 6514 6515 Added new functions to transparently handle the possibly split PM1 A/B 6516 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two 6517 functions 6518 now handle the split registers for PM1 Status, Enable, and Control. 6519 ACPICA 6520 BZ 6521 746. 6522 6523 Added a function to handle the PM1 control registers, 6524 AcpiHwWritePm1Control. 6525 This function writes both of the PM1 control registers (A/B). These 6526 registers 6527 are different than the PM1 A/B status and enable registers in that 6528 different 6529 values can be written to the A/B registers. Most notably, the SLP_TYP 6530 bits 6531 can be different, as per the values returned from the _Sx predefined 6532 methods. 6533 6534 Removed an extra register write within AcpiHwClearAcpiStatus. This 6535 function 6536 was writing an optional PM1B status register twice. The existing call to 6537 the 6538 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 6539 A/B 6540 register. ACPICA BZ 751. 6541 6542 Split out the PM1 Status registers from the FADT. Added new globals for 6543 these 6544 registers (A/B), similar to the way the PM1 Enable registers are handled. 6545 Instead of overloading the FADT Event Register blocks. This makes the 6546 code 6547 clearer and less prone to error. 6548 6549 Fixed the warning message for when the platform contains too many ACPI 6550 tables 6551 for the default size of the global root table data structure. The 6552 calculation 6553 for the truncation value was incorrect. 6554 6555 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 6556 obsolete macro, since it is now a simple reference to ->common.type. 6557 There 6558 were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 6559 6560 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 6561 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 6562 simply SLEEP_TYPE. ACPICA BZ 754. 6563 6564 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 6565 function is only needed on 64-bit host operating systems and is thus not 6566 included for 32-bit hosts. 6567 6568 Debug output: print the input and result for invocations of the _OSI 6569 reserved 6570 control method via the ACPI_LV_INFO debug level. Also, reduced some of 6571 the 6572 verbosity of this debug level. Len Brown. 6573 6574 Example Code and Data Size: These are the sizes for the OS-independent 6575 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6576 debug version of the code includes the debug output trace mechanism and 6577 has a 6578 much larger code and data size. 6579 6580 Previous Release: 6581 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 6582 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 6583 Current Release: 6584 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 6585 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 6586 6587 2) iASL Compiler/Disassembler and Tools: 6588 6589 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 6590 various legal performance profiles. 6591 6592 ---------------------------------------- 6593 23 January 2009. Summary of changes for version 20090123: 6594 6595 1) ACPI CA Core Subsystem: 6596 6597 Added the 2009 copyright to all module headers and signons. This affects 6598 virtually every file in the ACPICA core subsystem, the iASL compiler, and 6599 the tools/utilities. 6600 6601 Implemented a change to allow the host to override any ACPI table, 6602 including 6603 dynamically loaded tables. Previously, only the DSDT could be replaced by 6604 the 6605 host. With this change, the AcpiOsTableOverride interface is called for 6606 each 6607 table found in the RSDT/XSDT during ACPICA initialization, and also 6608 whenever 6609 a table is dynamically loaded via the AML Load operator. 6610 6611 Updated FADT flag definitions, especially the Boot Architecture flags. 6612 6613 Debugger: For the Find command, automatically pad the input ACPI name 6614 with 6615 underscores if the name is shorter than 4 characters. This enables a 6616 match 6617 with the actual namespace entry which is itself padded with underscores. 6618 6619 Example Code and Data Size: These are the sizes for the OS-independent 6620 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6621 debug version of the code includes the debug output trace mechanism and 6622 has a 6623 much larger code and data size. 6624 6625 Previous Release: 6626 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 6627 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 6628 Current Release: 6629 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 6630 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 6631 6632 2) iASL Compiler/Disassembler and Tools: 6633 6634 Fix build error under Bison-2.4. 6635 6636 Dissasembler: Enhanced FADT support. Added decoding of the Boot 6637 Architecture 6638 flags. Now decode all flags, regardless of the FADT version. Flag output 6639 includes the FADT version which first defined each flag. 6640 6641 The iASL -g option now dumps the RSDT to a file (in addition to the FADT 6642 and 6643 DSDT). Windows only. 6644 6645 ---------------------------------------- 6646 04 December 2008. Summary of changes for version 20081204: 6647 6648 1) ACPI CA Core Subsystem: 6649 6650 The ACPICA Programmer Reference has been completely updated and revamped 6651 for 6652 this release. This includes updates to the external interfaces, OSL 6653 interfaces, the overview sections, and the debugger reference. 6654 6655 Several new ACPICA interfaces have been implemented and documented in the 6656 programmer reference: 6657 AcpiReset - Writes the reset value to the FADT-defined reset register. 6658 AcpiDisableAllGpes - Disable all available GPEs. 6659 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 6660 AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 6661 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 6662 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 6663 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 6664 6665 Most of the public ACPI hardware-related interfaces have been moved to a 6666 new 6667 file, components/hardware/hwxface.c 6668 6669 Enhanced the FADT parsing and low-level ACPI register access: The ACPI 6670 register lengths within the FADT are now used, and the low level ACPI 6671 register access no longer hardcodes the ACPI register lengths. Given that 6672 there may be some risk in actually trusting the FADT register lengths, a 6673 run- 6674 time option was added to fall back to the default hardcoded lengths if 6675 the 6676 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 6677 option is set to true for now, and a warning is issued if a suspicious 6678 FADT 6679 register length is overridden with the default value. 6680 6681 Fixed a reference count issue in NsRepairObject. This problem was 6682 introduced 6683 in version 20081031 as part of a fix to repair Buffer objects within 6684 Packages. Lin Ming. 6685 6686 Added semaphore support to the Linux/Unix application OS-services layer 6687 (OSL). ACPICA BZ 448. Lin Ming. 6688 6689 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes 6690 will 6691 be implemented in the OSL, or will binary semaphores be used instead. 6692 6693 Example Code and Data Size: These are the sizes for the OS-independent 6694 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6695 debug version of the code includes the debug output trace mechanism and 6696 has a 6697 much larger code and data size. 6698 6699 Previous Release: 6700 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 6701 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 6702 Current Release: 6703 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 6704 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 6705 6706 2) iASL Compiler/Disassembler and Tools: 6707 6708 iASL: Completed the '-e' option to include additional ACPI tables in 6709 order 6710 to 6711 aid with disassembly and External statement generation. ACPICA BZ 742. 6712 Lin 6713 Ming. 6714 6715 iASL: Removed the "named object in while loop" error. The compiler cannot 6716 determine how many times a loop will execute. ACPICA BZ 730. 6717 6718 Disassembler: Implemented support for FADT revision 2 (MS extension). 6719 ACPICA 6720 BZ 743. 6721 6722 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and 6723 MCFG). 6724 6725 ---------------------------------------- 6726 31 October 2008. Summary of changes for version 20081031: 6727 6728 1) ACPI CA Core Subsystem: 6729 6730 Restructured the ACPICA header files into public/private. acpi.h now 6731 includes 6732 only the "public" acpica headers. All other acpica headers are "private" 6733 and 6734 should not be included by acpica users. One new file, accommon.h is used 6735 to 6736 include the commonly used private headers for acpica code generation. 6737 Future 6738 plans include moving all private headers to a new subdirectory. 6739 6740 Implemented an automatic Buffer->String return value conversion for 6741 predefined ACPI methods. For these methods (such as _BIF), added 6742 automatic 6743 conversion for return objects that are required to be a String, but a 6744 Buffer 6745 was found instead. This can happen when reading string battery data from 6746 an 6747 operation region, because it used to be difficult to convert the data 6748 from 6749 buffer to string from within the ASL. Ensures that the host OS is 6750 provided 6751 with a valid null-terminated string. Linux BZ 11822. 6752 6753 Updated the FACS waking vector interfaces. Split 6754 AcpiSetFirmwareWakingVector 6755 into two: one for the 32-bit vector, another for the 64-bit vector. This 6756 is 6757 required because the host OS must setup the wake much differently for 6758 each 6759 vector (real vs. protected mode, etc.) and the interface itself should 6760 not 6761 be 6762 deciding which vector to use. Also, eliminated the 6763 GetFirmwareWakingVector 6764 interface, as it served no purpose (only the firmware reads the vector, 6765 OS 6766 only writes the vector.) ACPICA BZ 731. 6767 6768 Implemented a mechanism to escape infinite AML While() loops. Added a 6769 loop 6770 counter to force exit from AML While loops if the count becomes too 6771 large. 6772 This can occur in poorly written AML when the hardware does not respond 6773 within a while loop and the loop does not implement a timeout. The 6774 maximum 6775 loop count is configurable. A new exception code is returned when a loop 6776 is 6777 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 6778 6779 Optimized the execution of AML While loops. Previously, a control state 6780 object was allocated and freed for each execution of the loop. The 6781 optimization is to simply reuse the control state for each iteration. 6782 This 6783 speeds up the raw loop execution time by about 5%. 6784 6785 Enhanced the implicit return mechanism. For Windows compatibility, return 6786 an 6787 implicit integer of value zero for methods that contain no executable 6788 code. 6789 Such methods are seen in the field as stubs (presumably), and can cause 6790 drivers to fail if they expect a return value. Lin Ming. 6791 6792 Allow multiple backslashes as root prefixes in namepaths. In a fully 6793 qualified namepath, allow multiple backslash prefixes. This can happen 6794 (and 6795 is seen in the field) because of the use of a double-backslash in strings 6796 (since backslash is the escape character) causing confusion. ACPICA BZ 6797 739 6798 Lin Ming. 6799 6800 Emit a warning if two different FACS or DSDT tables are discovered in the 6801 FADT. Checks if there are two valid but different addresses for the FACS 6802 and 6803 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 6804 6805 Consolidated the method argument count validation code. Merged the code 6806 that 6807 validates control method argument counts into the predefined validation 6808 module. Eliminates possible multiple warnings for incorrect argument 6809 counts. 6810 6811 Implemented ACPICA example code. Includes code for ACPICA initialization, 6812 handler installation, and calling a control method. Available at 6813 source/tools/examples. 6814 6815 Added a global pointer for FACS table to simplify internal FACS access. 6816 Use 6817 the global pointer instead of using AcpiGetTableByIndex for each FACS 6818 access. 6819 This simplifies the code for the Global Lock and the Firmware Waking 6820 Vector(s). 6821 6822 Example Code and Data Size: These are the sizes for the OS-independent 6823 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6824 debug version of the code includes the debug output trace mechanism and 6825 has a 6826 much larger code and data size. 6827 6828 Previous Release: 6829 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 6830 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 6831 Current Release: 6832 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 6833 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 6834 6835 2) iASL Compiler/Disassembler and Tools: 6836 6837 iASL: Improved disassembly of external method calls. Added the -e option 6838 to 6839 allow the inclusion of additional ACPI tables to help with the 6840 disassembly 6841 of 6842 method invocations and the generation of external declarations during the 6843 disassembly. Certain external method invocations cannot be disassembled 6844 properly without the actual declaration of the method. Use the -e option 6845 to 6846 include the table where the external method(s) are actually declared. 6847 Most 6848 useful for disassembling SSDTs that make method calls back to the master 6849 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl 6850 -d 6851 -e dsdt.aml ssdt1.aml 6852 6853 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 6854 problem where the use of an alias within a namepath would result in a not 6855 found error or cause the compiler to fault. Also now allows forward 6856 references from the Alias operator itself. ACPICA BZ 738. 6857 6858 ---------------------------------------- 6859 26 September 2008. Summary of changes for version 20080926: 6860 6861 1) ACPI CA Core Subsystem: 6862 6863 Designed and implemented a mechanism to validate predefined ACPI methods 6864 and 6865 objects. This code validates the predefined ACPI objects (objects whose 6866 names 6867 start with underscore) that appear in the namespace, at the time they are 6868 evaluated. The argument count and the type of the returned object are 6869 validated against the ACPI specification. The purpose of this validation 6870 is 6871 to detect problems with the BIOS-implemented predefined ACPI objects 6872 before 6873 the results are returned to the ACPI-related drivers. Future enhancements 6874 may 6875 include actual repair of incorrect return objects where possible. Two new 6876 files are nspredef.c and acpredef.h. 6877 6878 Fixed a fault in the AML parser if a memory allocation fails during the 6879 Op 6880 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 6881 6882 Fixed an issue with implicit return compatibility. This change improves 6883 the 6884 implicit return mechanism to be more compatible with the MS interpreter. 6885 Lin 6886 Ming, ACPICA BZ 349. 6887 6888 Implemented support for zero-length buffer-to-string conversions. Allow 6889 zero 6890 length strings during interpreter buffer-to-string conversions. For 6891 example, 6892 during the ToDecimalString and ToHexString operators, as well as implicit 6893 conversions. Fiodor Suietov, ACPICA BZ 585. 6894 6895 Fixed two possible memory leaks in the error exit paths of 6896 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions 6897 are 6898 similar in that they use a stack of state objects in order to eliminate 6899 recursion. The stack must be fully unwound and deallocated if an error 6900 occurs. Lin Ming. ACPICA BZ 383. 6901 6902 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the 6903 global 6904 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 6905 Moore ACPICA BZ 442. 6906 6907 Removed the obsolete version number in module headers. Removed the 6908 "$Revision" number that appeared in each module header. This version 6909 number 6910 was useful under SourceSafe and CVS, but has no meaning under git. It is 6911 not 6912 only incorrect, it could also be misleading. 6913 6914 Example Code and Data Size: These are the sizes for the OS-independent 6915 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6916 debug version of the code includes the debug output trace mechanism and 6917 has a 6918 much larger code and data size. 6919 6920 Previous Release: 6921 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6922 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 6923 Current Release: 6924 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 6925 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 6926 6927 ---------------------------------------- 6928 29 August 2008. Summary of changes for version 20080829: 6929 6930 1) ACPI CA Core Subsystem: 6931 6932 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 6933 Reference. Changes include the elimination of cheating on the Object 6934 field 6935 for the DdbHandle subtype, addition of a reference class field to 6936 differentiate the various reference types (instead of an AML opcode), and 6937 the 6938 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 6939 6940 Reduce an error to a warning for an incorrect method argument count. 6941 Previously aborted with an error if too few arguments were passed to a 6942 control method via the external ACPICA interface. Now issue a warning 6943 instead 6944 and continue. Handles the case where the method inadvertently declares 6945 too 6946 many arguments, but does not actually use the extra ones. Applies mainly 6947 to 6948 the predefined methods. Lin Ming. Linux BZ 11032. 6949 6950 Disallow the evaluation of named object types with no intrinsic value. 6951 Return 6952 AE_TYPE for objects that have no value and therefore evaluation is 6953 undefined: 6954 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation 6955 of 6956 these types were allowed, but an exception would be generated at some 6957 point 6958 during the evaluation. Now, the error is generated up front. 6959 6960 Fixed a possible memory leak in the AcpiNsGetExternalPathname function 6961 (nsnames.c). Fixes a leak in the error exit path. 6962 6963 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These 6964 debug 6965 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and 6966 ACPI_EXCEPTION 6967 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 6968 ACPI_LV_EVENTS. 6969 6970 Removed obsolete and/or unused exception codes from the acexcep.h header. 6971 There is the possibility that certain device drivers may be affected if 6972 they 6973 use any of these exceptions. 6974 6975 The ACPICA documentation has been added to the public git source tree, 6976 under 6977 acpica/documents. Included are the ACPICA programmer reference, the iASL 6978 compiler reference, and the changes.txt release logfile. 6979 6980 Example Code and Data Size: These are the sizes for the OS-independent 6981 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6982 debug version of the code includes the debug output trace mechanism and 6983 has a 6984 much larger code and data size. 6985 6986 Previous Release: 6987 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6988 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 6989 Current Release: 6990 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6991 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 6992 6993 2) iASL Compiler/Disassembler and Tools: 6994 6995 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 6996 defines _SCP with 3 arguments. Previous versions defined it with only 1 6997 argument. iASL now allows both definitions. 6998 6999 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for 7000 zero- 7001 length subtables when disassembling ACPI tables. Also fixed a couple of 7002 errors where a full 16-bit table type field was not extracted from the 7003 input 7004 properly. 7005 7006 acpisrc: Improve comment counting mechanism for generating source code 7007 statistics. Count first and last lines of multi-line comments as 7008 whitespace, 7009 not comment lines. Handle Linux legal header in addition to standard 7010 acpica 7011 header. 7012 7013 ---------------------------------------- 7014 7015 29 July 2008. Summary of changes for version 20080729: 7016 7017 1) ACPI CA Core Subsystem: 7018 7019 Fix a possible deadlock in the GPE dispatch. Remove call to 7020 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will 7021 attempt 7022 to acquire the GPE lock but can deadlock since the GPE lock is already 7023 held 7024 at dispatch time. This code was introduced in version 20060831 as a 7025 response 7026 to Linux BZ 6881 and has since been removed from Linux. 7027 7028 Add a function to dereference returned reference objects. Examines the 7029 return 7030 object from a call to AcpiEvaluateObject. Any Index or RefOf references 7031 are 7032 automatically dereferenced in an attempt to return something useful 7033 (these 7034 reference types cannot be converted into an external ACPI_OBJECT.) 7035 Provides 7036 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 7037 7038 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 7039 subtables for the MADT and one new subtable for the SRAT. Includes 7040 disassembler and AcpiSrc support. Data from the Intel 64 Architecture 7041 x2APIC 7042 Specification, June 2008. 7043 7044 Additional error checking for pathname utilities. Add error check after 7045 all 7046 calls to AcpiNsGetPathnameLength. Add status return from 7047 AcpiNsBuildExternalPath and check after all calls. Add parameter 7048 validation 7049 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 7050 7051 Return status from the global init function AcpiUtGlobalInitialize. This 7052 is 7053 used by both the kernel subsystem and the utilities such as iASL 7054 compiler. 7055 The function could possibly fail when the caches are initialized. Yang 7056 Yi. 7057 7058 Add a function to decode reference object types to strings. Created for 7059 improved error messages. 7060 7061 Improve object conversion error messages. Better error messages during 7062 object 7063 conversion from internal to the external ACPI_OBJECT. Used for external 7064 calls 7065 to AcpiEvaluateObject. 7066 7067 Example Code and Data Size: These are the sizes for the OS-independent 7068 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7069 debug version of the code includes the debug output trace mechanism and 7070 has a 7071 much larger code and data size. 7072 7073 Previous Release: 7074 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 7075 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 7076 Current Release: 7077 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 7078 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 7079 7080 2) iASL Compiler/Disassembler and Tools: 7081 7082 Debugger: fix a possible hang when evaluating non-methods. Fixes a 7083 problem 7084 introduced in version 20080701. If the object being evaluated (via 7085 execute 7086 command) is not a method, the debugger can hang while trying to obtain 7087 non- 7088 existent parameters. 7089 7090 iASL: relax error for using reserved "_T_x" identifiers. These names can 7091 appear in a disassembled ASL file if they were emitted by the original 7092 compiler. Instead of issuing an error or warning and forcing the user to 7093 manually change these names, issue a remark instead. 7094 7095 iASL: error if named object created in while loop. Emit an error if any 7096 named 7097 object is created within a While loop. If allowed, this code will 7098 generate 7099 a 7100 run-time error on the second iteration of the loop when an attempt is 7101 made 7102 to 7103 create the same named object twice. ACPICA bugzilla 730. 7104 7105 iASL: Support absolute pathnames for include files. Add support for 7106 absolute 7107 pathnames within the Include operator. previously, only relative 7108 pathnames 7109 were supported. 7110 7111 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource 7112 Descriptor. 7113 The ACPI spec requires one interrupt minimum. BZ 423 7114 7115 iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 7116 Handles the case for the Interrupt Resource Descriptor where 7117 the ResourceSource argument is omitted but ResourceSourceIndex 7118 is present. Now leave room for the Index. BZ 426 7119 7120 iASL: Prevent error message if CondRefOf target does not exist. Fixes 7121 cases 7122 where an error message is emitted if the target does not exist. BZ 516 7123 7124 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 7125 (get ACPI tables on Windows). This was apparently broken in version 7126 20070919. 7127 7128 AcpiXtract: Handle EOF while extracting data. Correctly handle the case 7129 where 7130 the EOF happens immediately after the last table in the input file. Print 7131 completion message. Previously, no message was displayed in this case. 7132 7133 ---------------------------------------- 7134 01 July 2008. Summary of changes for version 20080701: 7135 7136 0) Git source tree / acpica.org 7137 7138 Fixed a problem where a git-clone from http would not transfer the entire 7139 source tree. 7140 7141 1) ACPI CA Core Subsystem: 7142 7143 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 7144 enable bit. Now performs a read-change-write of the enable register 7145 instead 7146 of simply writing out the cached enable mask. This will prevent 7147 inadvertent 7148 enabling of GPEs if a rogue GPE is received during initialization (before 7149 GPE 7150 handlers are installed.) 7151 7152 Implemented a copy for dynamically loaded tables. Previously, dynamically 7153 loaded tables were simply mapped - but on some machines this memory is 7154 corrupted after suspend. Now copy the table to a local buffer. For the 7155 OpRegion case, added checksum verify. Use the table length from the table 7156 header, not the region length. For the Buffer case, use the table length 7157 also. Dennis Noordsij, Bob Moore. BZ 10734 7158 7159 Fixed a problem where the same ACPI table could not be dynamically loaded 7160 and 7161 unloaded more than once. Without this change, a table cannot be loaded 7162 again 7163 once it has been loaded/unloaded one time. The current mechanism does not 7164 unregister a table upon an unload. During a load, if the same table is 7165 found, 7166 this no longer returns an exception. BZ 722 7167 7168 Fixed a problem where the wrong descriptor length was calculated for the 7169 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as 7170 EndTag 7171 are calculated as 12 bytes long, but the actual length in the internal 7172 descriptor is 16 because of the round-up to 8 on the 64-bit build. 7173 Reported 7174 by Linn Crosetto. BZ 728 7175 7176 Fixed a possible memory leak in the Unload operator. The DdbHandle 7177 returned 7178 by Load() did not have its reference count decremented during unload, 7179 leading 7180 to a memory leak. Lin Ming. BZ 727 7181 7182 Fixed a possible memory leak when deleting thermal/processor objects. Any 7183 associated notify handlers (and objects) were not being deleted. Fiodor 7184 Suietov. BZ 506 7185 7186 Fixed the ordering of the ASCII names in the global mutex table to match 7187 the 7188 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug 7189 only. 7190 Vegard Nossum. BZ 726 7191 7192 Enhanced the AcpiGetObjectInfo interface to return the number of required 7193 arguments if the object is a control method. Added this call to the 7194 debugger 7195 so the proper number of default arguments are passed to a method. This 7196 prevents a warning when executing methods from AcpiExec. 7197 7198 Added a check for an invalid handle in AcpiGetObjectInfo. Return 7199 AE_BAD_PARAMETER if input handle is invalid. BZ 474 7200 7201 Fixed an extraneous warning from exconfig.c on the 64-bit build. 7202 7203 Example Code and Data Size: These are the sizes for the OS-independent 7204 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7205 debug version of the code includes the debug output trace mechanism and 7206 has a 7207 much larger code and data size. 7208 7209 Previous Release: 7210 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 7211 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 7212 Current Release: 7213 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 7214 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 7215 7216 2) iASL Compiler/Disassembler and Tools: 7217 7218 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 7219 resource descriptor names. 7220 7221 iASL: Detect invalid ASCII characters in input (windows version). Removed 7222 the 7223 "-CF" flag from the flex compile, enables correct detection of non-ASCII 7224 characters in the input. BZ 441 7225 7226 iASL: Eliminate warning when result of LoadTable is not used. Eliminate 7227 the 7228 "result of operation not used" warning when the DDB handle returned from 7229 LoadTable is not used. The warning is not needed. BZ 590 7230 7231 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG 7232 method 7233 to 7234 pass address of table to the AML. Added option to disable OpRegion 7235 simulation 7236 to allow creation of an OpRegion with a real address that was passed to 7237 _CFG. 7238 All of this allows testing of the Load and Unload operators from 7239 AcpiExec. 7240 7241 Debugger: update tables command for unloaded tables. Handle unloaded 7242 tables 7243 and use the standard table header output routine. 7244 7245 ---------------------------------------- 7246 09 June 2008. Summary of changes for version 20080609: 7247 7248 1) ACPI CA Core Subsystem: 7249 7250 Implemented a workaround for reversed _PRT entries. A significant number 7251 of 7252 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 7253 change dynamically detects and repairs this problem. Provides 7254 compatibility 7255 with MS ACPI. BZ 6859 7256 7257 Simplified the internal ACPI hardware interfaces to eliminate the locking 7258 flag parameter from Register Read/Write. Added a new external interface, 7259 AcpiGetRegisterUnlocked. 7260 7261 Fixed a problem where the invocation of a GPE control method could hang. 7262 This 7263 was a regression introduced in 20080514. The new method argument count 7264 validation mechanism can enter an infinite loop when a GPE method is 7265 dispatched. Problem fixed by removing the obsolete code that passed GPE 7266 block 7267 information to the notify handler via the control method parameter 7268 pointer. 7269 7270 Fixed a problem where the _SST execution status was incorrectly returned 7271 to 7272 the caller of AcpiEnterSleepStatePrep. This was a regression introduced 7273 in 7274 20080514. _SST is optional and a NOT_FOUND exception should never be 7275 returned. BZ 716 7276 7277 Fixed a problem where a deleted object could be accessed from within the 7278 AML 7279 parser. This was a regression introduced in version 20080123 as a fix for 7280 the 7281 Unload operator. Lin Ming. BZ 10669 7282 7283 Cleaned up the debug operand dump mechanism. Eliminated unnecessary 7284 operands 7285 and eliminated the use of a negative index in a loop. Operands are now 7286 displayed in the correct order, not backwards. This also fixes a 7287 regression 7288 introduced in 20080514 on 64-bit systems where the elimination of 7289 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 7290 715 7291 7292 Fixed a possible memory leak in EvPciConfigRegionSetup where the error 7293 exit 7294 path did not delete a locally allocated structure. 7295 7296 Updated definitions for the DMAR and SRAT tables to synchronize with the 7297 current specifications. Includes disassembler support. 7298 7299 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 7300 loop termination value was used. Loop terminated on iteration early, 7301 missing 7302 one mutex. Linn Crosetto 7303 7304 Example Code and Data Size: These are the sizes for the OS-independent 7305 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7306 debug version of the code includes the debug output trace mechanism and 7307 has a 7308 much larger code and data size. 7309 7310 Previous Release: 7311 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 7312 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 7313 Current Release: 7314 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 7315 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 7316 7317 2) iASL Compiler/Disassembler and Tools: 7318 7319 Disassembler: Implemented support for EisaId() within _CID objects. Now 7320 disassemble integer _CID objects back to EisaId invocations, including 7321 multiple integers within _CID packages. Includes single-step support for 7322 debugger also. 7323 7324 Disassembler: Added support for DMAR and SRAT table definition changes. 7325 7326 ---------------------------------------- 7327 14 May 2008. Summary of changes for version 20080514: 7328 7329 1) ACPI CA Core Subsystem: 7330 7331 Fixed a problem where GPEs were enabled too early during the ACPICA 7332 initialization. This could lead to "handler not installed" errors on some 7333 machines. Moved GPE enable until after _REG/_STA/_INI methods are run. 7334 This 7335 ensures that all operation regions and devices throughout the namespace 7336 have 7337 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 7338 7339 Implemented a change to the enter sleep code. Moved execution of the _GTS 7340 method to just before setting sleep enable bit. The execution was moved 7341 from 7342 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 7343 immediately before the SLP_EN bit is set, as per the ACPI specification. 7344 Luming Yu, BZ 1653. 7345 7346 Implemented a fix to disable unknown GPEs (2nd version). Now always 7347 disable 7348 the GPE, even if ACPICA thinks that that it is already disabled. It is 7349 possible that the AML or some other code has enabled the GPE unbeknownst 7350 to 7351 the ACPICA code. 7352 7353 Fixed a problem with the Field operator where zero-length fields would 7354 return 7355 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length 7356 ASL 7357 field declarations in Field(), BankField(), and IndexField(). BZ 10606. 7358 7359 Implemented a fix for the Load operator, now load the table at the 7360 namespace 7361 root. This reverts a change introduced in version 20071019. The table is 7362 now 7363 loaded at the namespace root even though this goes against the ACPI 7364 specification. This provides compatibility with other ACPI 7365 implementations. 7366 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin 7367 Ming. 7368 7369 Fixed a problem where ACPICA would not Load() tables with unusual 7370 signatures. 7371 Now ignore ACPI table signature for Load() operator. Only "SSDT" is 7372 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 7373 Therefore, signature validation is worthless. Apparently MS ACPI accepts 7374 such 7375 signatures, ACPICA must be compatible. BZ 10454. 7376 7377 Fixed a possible negative array index in AcpiUtValidateException. Added 7378 NULL 7379 fields to the exception string arrays to eliminate a -1 subtraction on 7380 the 7381 SubStatus field. 7382 7383 Updated the debug tracking macros to reduce overall code and data size. 7384 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 7385 instead of pointers to static strings. Jan Beulich and Bob Moore. 7386 7387 Implemented argument count checking in control method invocation via 7388 AcpiEvaluateObject. Now emit an error if too few arguments, warning if 7389 too 7390 many. This applies only to extern programmatic control method execution, 7391 not 7392 method-to-method calls within the AML. Lin Ming. 7393 7394 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is 7395 no 7396 longer needed, especially with the removal of 16-bit support. It was 7397 replaced 7398 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 7399 bit 7400 on 7401 32/64-bit platforms is required. 7402 7403 Added the C const qualifier for appropriate string constants -- mostly 7404 MODULE_NAME and printf format strings. Jan Beulich. 7405 7406 Example Code and Data Size: These are the sizes for the OS-independent 7407 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7408 debug version of the code includes the debug output trace mechanism and 7409 has a 7410 much larger code and data size. 7411 7412 Previous Release: 7413 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 7414 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 7415 Current Release: 7416 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 7417 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 7418 7419 2) iASL Compiler/Disassembler and Tools: 7420 7421 Implemented ACPI table revision ID validation in the disassembler. Zero 7422 is 7423 always invalid. For DSDTs, the ID controls the interpreter integer width. 7424 1 7425 means 32-bit and this is unusual. 2 or greater is 64-bit. 7426 7427 ---------------------------------------- 7428 21 March 2008. Summary of changes for version 20080321: 7429 7430 1) ACPI CA Core Subsystem: 7431 7432 Implemented an additional change to the GPE support in order to suppress 7433 spurious or stray GPEs. The AcpiEvDisableGpe function will now 7434 permanently 7435 disable incoming GPEs that are neither enabled nor disabled -- meaning 7436 that 7437 the GPE is unknown to the system. This should prevent future interrupt 7438 floods 7439 from that GPE. BZ 6217 (Zhang Rui) 7440 7441 Fixed a problem where NULL package elements were not returned to the 7442 AcpiEvaluateObject interface correctly. The element was simply ignored 7443 instead of returning a NULL ACPI_OBJECT package element, potentially 7444 causing 7445 a buffer overflow and/or confusing the caller who expected a fixed number 7446 of 7447 elements. BZ 10132 (Lin Ming, Bob Moore) 7448 7449 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, 7450 Dword, 7451 Qword), Field, BankField, and IndexField operators when invoked from 7452 inside 7453 an executing control method. In this case, these operators created 7454 namespace 7455 nodes that were incorrectly left marked as permanent nodes instead of 7456 temporary nodes. This could cause a problem if there is race condition 7457 between an exiting control method and a running namespace walk. (Reported 7458 by 7459 Linn Crosetto) 7460 7461 Fixed a problem where the CreateField and CreateXXXField operators would 7462 incorrectly allow duplicate names (the name of the field) with no 7463 exception 7464 generated. 7465 7466 Implemented several changes for Notify handling. Added support for new 7467 Notify 7468 values (ACPI 2.0+) and improved the Notify debug output. Notify on 7469 PowerResource objects is no longer allowed, as per the ACPI 7470 specification. 7471 (Bob Moore, Zhang Rui) 7472 7473 All Reference Objects returned via the AcpiEvaluateObject interface are 7474 now 7475 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved 7476 for 7477 NULL objects - either NULL package elements or unresolved named 7478 references. 7479 7480 Fixed a problem where an extraneous debug message was produced for 7481 package 7482 objects (when debugging enabled). The message "Package List length larger 7483 than NumElements count" is now produced in the correct case, and is now 7484 an 7485 error message rather than a debug message. Added a debug message for the 7486 opposite case, where NumElements is larger than the Package List (the 7487 package 7488 will be padded out with NULL elements as per the ACPI spec.) 7489 7490 Implemented several improvements for the output of the ASL "Debug" object 7491 to 7492 clarify and keep all data for a given object on one output line. 7493 7494 Fixed two size calculation issues with the variable-length Start 7495 Dependent 7496 resource descriptor. 7497 7498 Example Code and Data Size: These are the sizes for the OS-independent 7499 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7500 debug version of the code includes the debug output trace mechanism and 7501 has 7502 a much larger code and data size. 7503 7504 Previous Release: 7505 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 7506 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 7507 Current Release: 7508 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 7509 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 7510 7511 2) iASL Compiler/Disassembler and Tools: 7512 7513 Fixed a problem with the use of the Switch operator where execution of 7514 the 7515 containing method by multiple concurrent threads could cause an 7516 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 7517 actual Switch opcode, it must be simulated with local named temporary 7518 variables and if/else pairs. The solution chosen was to mark any method 7519 that 7520 uses Switch as Serialized, thus preventing multiple thread entries. BZ 7521 469. 7522 7523 ---------------------------------------- 7524 13 February 2008. Summary of changes for version 20080213: 7525 7526 1) ACPI CA Core Subsystem: 7527 7528 Implemented another MS compatibility design change for GPE/Notify 7529 handling. 7530 GPEs are now cleared/enabled asynchronously to allow all pending notifies 7531 to 7532 complete first. It is expected that the OSL will queue the enable request 7533 behind all pending notify requests (may require changes to the local host 7534 OSL 7535 in AcpiOsExecute). Alexey Starikovskiy. 7536 7537 Fixed a problem where buffer and package objects passed as arguments to a 7538 control method via the external AcpiEvaluateObject interface could cause 7539 an 7540 AE_AML_INTERNAL exception depending on the order and type of operators 7541 executed by the target control method. 7542 7543 Fixed a problem where resource descriptor size optimization could cause a 7544 problem when a _CRS resource template is passed to a _SRS method. The 7545 _SRS 7546 resource template must use the same descriptors (with the same size) as 7547 returned from _CRS. This change affects the following resource 7548 descriptors: 7549 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 7550 9487) 7551 7552 Fixed a problem where a CopyObject to RegionField, BankField, and 7553 IndexField 7554 objects did not perform an implicit conversion as it should. These types 7555 must 7556 retain their initial type permanently as per the ACPI specification. 7557 However, 7558 a CopyObject to all other object types should not perform an implicit 7559 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 7560 7561 Fixed a problem with the AcpiGetDevices interface where the mechanism to 7562 match device CIDs did not examine the entire list of available CIDs, but 7563 instead aborted on the first non-matching CID. Andrew Patterson. 7564 7565 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro 7566 was 7567 inadvertently changed to return a 16-bit value instead of a 32-bit value, 7568 truncating the upper dword of a 64-bit value. This macro is only used to 7569 display debug output, so no incorrect calculations were made. Also, 7570 reimplemented the macro so that a 64-bit shift is not performed by 7571 inefficient compilers. 7572 7573 Added missing va_end statements that should correspond with each va_start 7574 statement. 7575 7576 Example Code and Data Size: These are the sizes for the OS-independent 7577 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7578 debug version of the code includes the debug output trace mechanism and 7579 has 7580 a much larger code and data size. 7581 7582 Previous Release: 7583 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 7584 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 7585 Current Release: 7586 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 7587 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 7588 7589 2) iASL Compiler/Disassembler and Tools: 7590 7591 Implemented full disassembler support for the following new ACPI tables: 7592 BERT, EINJ, and ERST. Implemented partial disassembler support for the 7593 complicated HEST table. These tables support the Windows Hardware Error 7594 Architecture (WHEA). 7595 7596 ---------------------------------------- 7597 23 January 2008. Summary of changes for version 20080123: 7598 7599 1) ACPI CA Core Subsystem: 7600 7601 Added the 2008 copyright to all module headers and signons. This affects 7602 virtually every file in the ACPICA core subsystem, the iASL compiler, and 7603 the tools/utilities. 7604 7605 Fixed a problem with the SizeOf operator when used with Package and 7606 Buffer 7607 objects. These objects have deferred execution for some arguments, and 7608 the 7609 execution is now completed before the SizeOf is executed. This problem 7610 caused 7611 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) 7612 BZ 7613 9558 7614 7615 Implemented an enhancement to the interpreter "slack mode". In the 7616 absence 7617 of 7618 an explicit return or an implicitly returned object from the last 7619 executed 7620 opcode, a control method will now implicitly return an integer of value 0 7621 for 7622 Microsoft compatibility. (Lin Ming) BZ 392 7623 7624 Fixed a problem with the Load operator where an exception was not 7625 returned 7626 in 7627 the case where the table is already loaded. (Lin Ming) BZ 463 7628 7629 Implemented support for the use of DDBHandles as an Indexed Reference, as 7630 per 7631 the ACPI spec. (Lin Ming) BZ 486 7632 7633 Implemented support for UserTerm (Method invocation) for the Unload 7634 operator 7635 as per the ACPI spec. (Lin Ming) BZ 580 7636 7637 Fixed a problem with the LoadTable operator where the OemId and 7638 OemTableId 7639 input strings could cause unexpected failures if they were shorter than 7640 the 7641 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 7642 7643 Implemented support for UserTerm (Method invocation) for the Unload 7644 operator 7645 as per the ACPI spec. (Lin Ming) BZ 580 7646 7647 Implemented header file support for new ACPI tables - BERT, ERST, EINJ, 7648 HEST, 7649 IBFT, UEFI, WDAT. Disassembler support is forthcoming. 7650 7651 Example Code and Data Size: These are the sizes for the OS-independent 7652 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7653 debug version of the code includes the debug output trace mechanism and 7654 has 7655 a much larger code and data size. 7656 7657 Previous Release: 7658 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 7659 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 7660 Current Release: 7661 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 7662 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 7663 7664 2) iASL Compiler/Disassembler and Tools: 7665 7666 Implemented support in the disassembler for checksum validation on 7667 incoming 7668 binary DSDTs and SSDTs. If incorrect, a message is displayed within the 7669 table 7670 header dump at the start of the disassembly. 7671 7672 Implemented additional debugging information in the namespace listing 7673 file 7674 created during compilation. In addition to the namespace hierarchy, the 7675 full 7676 pathname to each namespace object is displayed. 7677 7678 Fixed a problem with the disassembler where invalid ACPI tables could 7679 cause 7680 faults or infinite loops. 7681 7682 Fixed an unexpected parse error when using the optional "parameter types" 7683 list in a control method declaration. (Lin Ming) BZ 397 7684 7685 Fixed a problem where two External declarations with the same name did 7686 not 7687 cause an error (Lin Ming) BZ 509 7688 7689 Implemented support for full TermArgs (adding Argx, Localx and method 7690 invocation) for the ParameterData parameter to the LoadTable operator. 7691 (Lin 7692 Ming) BZ 583,587 7693 7694 ---------------------------------------- 7695 19 December 2007. Summary of changes for version 20071219: 7696 7697 1) ACPI CA Core Subsystem: 7698 7699 Implemented full support for deferred execution for the TermArg string 7700 arguments for DataTableRegion. This enables forward references and full 7701 operand resolution for the three string arguments. Similar to 7702 OperationRegion 7703 deferred argument execution.) Lin Ming. BZ 430 7704 7705 Implemented full argument resolution support for the BankValue argument 7706 to 7707 BankField. Previously, only constants were supported, now any TermArg may 7708 be 7709 used. Lin Ming BZ 387, 393 7710 7711 Fixed a problem with AcpiGetDevices where the search of a branch of the 7712 device tree could be terminated prematurely. In accordance with the ACPI 7713 specification, the search down the current branch is terminated if a 7714 device 7715 is both not present and not functional (instead of just not present.) 7716 Yakui 7717 Zhao. 7718 7719 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly 7720 if 7721 the underlying AML code changed the GPE enable registers. Now, any 7722 unknown 7723 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately 7724 disabled 7725 instead of simply ignored. Rui Zhang. 7726 7727 Fixed a problem with Index Fields where the Index register was 7728 incorrectly 7729 limited to a maximum of 32 bits. Now any size may be used. 7730 7731 Fixed a couple memory leaks associated with "implicit return" objects 7732 when 7733 the AML Interpreter slack mode is enabled. Lin Ming BZ 349 7734 7735 Example Code and Data Size: These are the sizes for the OS-independent 7736 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7737 debug version of the code includes the debug output trace mechanism and 7738 has 7739 a much larger code and data size. 7740 7741 Previous Release: 7742 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 7743 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 7744 Current Release: 7745 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 7746 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 7747 7748 ---------------------------------------- 7749 14 November 2007. Summary of changes for version 20071114: 7750 7751 1) ACPI CA Core Subsystem: 7752 7753 Implemented event counters for each of the Fixed Events, the ACPI SCI 7754 (interrupt) itself, and control methods executed. Named 7755 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. 7756 These 7757 should be useful for debugging and statistics. 7758 7759 Implemented a new external interface, AcpiGetStatistics, to retrieve the 7760 contents of the various event counters. Returns the current values for 7761 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 7762 AcpiMethodCount. The interface can be expanded in the future if new 7763 counters 7764 are added. Device drivers should use this interface rather than access 7765 the 7766 counters directly. 7767 7768 Fixed a problem with the FromBCD and ToBCD operators. With some 7769 compilers, 7770 the ShortDivide function worked incorrectly, causing problems with the 7771 BCD 7772 functions with large input values. A truncation from 64-bit to 32-bit 7773 inadvertently occurred. Internal BZ 435. Lin Ming 7774 7775 Fixed a problem with Index references passed as method arguments. 7776 References 7777 passed as arguments to control methods were dereferenced immediately 7778 (before 7779 control was passed to the called method). The references are now 7780 correctly 7781 passed directly to the called method. BZ 5389. Lin Ming 7782 7783 Fixed a problem with CopyObject used in conjunction with the Index 7784 operator. 7785 The reference was incorrectly dereferenced before the copy. The reference 7786 is 7787 now correctly copied. BZ 5391. Lin Ming 7788 7789 Fixed a problem with Control Method references within Package objects. 7790 These 7791 references are now correctly generated. This completes the package 7792 construction overhaul that began in version 20071019. 7793 7794 Example Code and Data Size: These are the sizes for the OS-independent 7795 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7796 debug version of the code includes the debug output trace mechanism and 7797 has 7798 a much larger code and data size. 7799 7800 Previous Release: 7801 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 7802 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 7803 Current Release: 7804 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 7805 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 7806 7807 7808 2) iASL Compiler/Disassembler and Tools: 7809 7810 The AcpiExec utility now installs handlers for all of the predefined 7811 Operation Region types. New types supported are: PCI_Config, CMOS, and 7812 PCIBARTarget. 7813 7814 Fixed a problem with the 64-bit version of AcpiExec where the extended 7815 (64- 7816 bit) address fields for the DSDT and FACS within the FADT were not being 7817 used, causing truncation of the upper 32-bits of these addresses. Lin 7818 Ming 7819 and Bob Moore 7820 7821 ---------------------------------------- 7822 19 October 2007. Summary of changes for version 20071019: 7823 7824 1) ACPI CA Core Subsystem: 7825 7826 Fixed a problem with the Alias operator when the target of the alias is a 7827 named ASL operator that opens a new scope -- Scope, Device, 7828 PowerResource, 7829 Processor, and ThermalZone. In these cases, any children of the original 7830 operator could not be accessed via the alias, potentially causing 7831 unexpected 7832 AE_NOT_FOUND exceptions. (BZ 9067) 7833 7834 Fixed a problem with the Package operator where all named references were 7835 created as object references and left otherwise unresolved. According to 7836 the 7837 ACPI specification, a Package can only contain Data Objects or references 7838 to 7839 control methods. The implication is that named references to Data Objects 7840 (Integer, Buffer, String, Package, BufferField, Field) should be resolved 7841 immediately upon package creation. This is the approach taken with this 7842 change. References to all other named objects (Methods, Devices, Scopes, 7843 etc.) are all now properly created as reference objects. (BZ 5328) 7844 7845 Reverted a change to Notify handling that was introduced in version 7846 20070508. This version changed the Notify handling from asynchronous to 7847 fully synchronous (Device driver Notify handling with respect to the 7848 Notify 7849 ASL operator). It was found that this change caused more problems than it 7850 solved and was removed by most users. 7851 7852 Fixed a problem with the Increment and Decrement operators where the type 7853 of 7854 the target object could be unexpectedly and incorrectly changed. (BZ 353) 7855 Lin Ming. 7856 7857 Fixed a problem with the Load and LoadTable operators where the table 7858 location within the namespace was ignored. Instead, the table was always 7859 loaded into the root or current scope. Lin Ming. 7860 7861 Fixed a problem with the Load operator when loading a table from a buffer 7862 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 7863 7864 Fixed a problem with the Debug object where a store of a DdbHandle 7865 reference 7866 object to the Debug object could cause a fault. 7867 7868 Added a table checksum verification for the Load operator, in the case 7869 where 7870 the load is from a buffer. (BZ 578). 7871 7872 Implemented additional parameter validation for the LoadTable operator. 7873 The 7874 length of the input strings SignatureString, OemIdString, and OemTableId 7875 are 7876 now checked for maximum lengths. (BZ 582) Lin Ming. 7877 7878 Example Code and Data Size: These are the sizes for the OS-independent 7879 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7880 debug version of the code includes the debug output trace mechanism and 7881 has 7882 a much larger code and data size. 7883 7884 Previous Release: 7885 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 7886 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 7887 Current Release: 7888 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 7889 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 7890 7891 7892 2) iASL Compiler/Disassembler: 7893 7894 Fixed a problem where if a single file was specified and the file did not 7895 exist, no error message was emitted. (Introduced with wildcard support in 7896 version 20070917.) 7897 7898 ---------------------------------------- 7899 19 September 2007. Summary of changes for version 20070919: 7900 7901 1) ACPI CA Core Subsystem: 7902 7903 Designed and implemented new external interfaces to install and remove 7904 handlers for ACPI table-related events. Current events that are defined 7905 are 7906 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 7907 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 7908 AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 7909 7910 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 7911 (acpi_serialized option on Linux) could cause some systems to hang during 7912 initialization. (Bob Moore) BZ 8171 7913 7914 Fixed a problem where objects of certain types (Device, ThermalZone, 7915 Processor, PowerResource) can be not found if they are declared and 7916 referenced from within the same control method (Lin Ming) BZ 341 7917 7918 Example Code and Data Size: These are the sizes for the OS-independent 7919 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7920 debug version of the code includes the debug output trace mechanism and 7921 has 7922 a much larger code and data size. 7923 7924 Previous Release: 7925 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 7926 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 7927 Current Release: 7928 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 7929 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 7930 7931 7932 2) iASL Compiler/Disassembler: 7933 7934 Implemented support to allow multiple files to be compiled/disassembled 7935 in 7936 a 7937 single invocation. This includes command line wildcard support for both 7938 the 7939 Windows and Unix versions of the compiler. This feature simplifies the 7940 disassembly and compilation of multiple ACPI tables in a single 7941 directory. 7942 7943 ---------------------------------------- 7944 08 May 2007. Summary of changes for version 20070508: 7945 7946 1) ACPI CA Core Subsystem: 7947 7948 Implemented a Microsoft compatibility design change for the handling of 7949 the 7950 Notify AML operator. Previously, notify handlers were dispatched and 7951 executed completely asynchronously in a deferred thread. The new design 7952 still executes the notify handlers in a different thread, but the 7953 original 7954 thread that executed the Notify() now waits at a synchronization point 7955 for 7956 the notify handler to complete. Some machines depend on a synchronous 7957 Notify 7958 operator in order to operate correctly. 7959 7960 Implemented support to allow Package objects to be passed as method 7961 arguments to the external AcpiEvaluateObject interface. Previously, this 7962 would return the AE_NOT_IMPLEMENTED exception. This feature had not been 7963 implemented since there were no reserved control methods that required it 7964 until recently. 7965 7966 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs 7967 that 7968 contained invalid non-zero values in reserved fields could cause later 7969 failures because these fields have meaning in later revisions of the 7970 FADT. 7971 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The 7972 fields 7973 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 7974 7975 Fixed a problem where the Global Lock handle was not properly updated if 7976 a 7977 thread that acquired the Global Lock via executing AML code then 7978 attempted 7979 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by 7980 Joe 7981 Liu. 7982 7983 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 7984 could be corrupted if the interrupt being removed was at the head of the 7985 list. Reported by Linn Crosetto. 7986 7987 Example Code and Data Size: These are the sizes for the OS-independent 7988 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7989 debug version of the code includes the debug output trace mechanism and 7990 has 7991 a much larger code and data size. 7992 7993 Previous Release: 7994 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7995 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 7996 Current Release: 7997 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 7998 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 7999 8000 ---------------------------------------- 8001 20 March 2007. Summary of changes for version 20070320: 8002 8003 1) ACPI CA Core Subsystem: 8004 8005 Implemented a change to the order of interpretation and evaluation of AML 8006 operand objects within the AML interpreter. The interpreter now evaluates 8007 operands in the order that they appear in the AML stream (and the 8008 corresponding ASL code), instead of in the reverse order (after the 8009 entire 8010 operand list has been parsed). The previous behavior caused several 8011 subtle 8012 incompatibilities with the Microsoft AML interpreter as well as being 8013 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 8014 8015 Implemented a change to the ACPI Global Lock support. All interfaces to 8016 the 8017 global lock now allow the same thread to acquire the lock multiple times. 8018 This affects the AcpiAcquireGlobalLock external interface to the global 8019 lock 8020 as well as the internal use of the global lock to support AML fields -- a 8021 control method that is holding the global lock can now simultaneously 8022 access 8023 AML fields that require global lock protection. Previously, in both 8024 cases, 8025 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change 8026 to 8027 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 8028 Controller. There is no change to the behavior of the AML Acquire 8029 operator, 8030 as this can already be used to acquire a mutex multiple times by the same 8031 thread. BZ 8066. With assistance from Alexey Starikovskiy. 8032 8033 Fixed a problem where invalid objects could be referenced in the AML 8034 Interpreter after error conditions. During operand evaluation, ensure 8035 that 8036 the internal "Return Object" field is cleared on error and only valid 8037 pointers are stored there. Caused occasional access to deleted objects 8038 that 8039 resulted in "large reference count" warning messages. Valery Podrezov. 8040 8041 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur 8042 on 8043 deeply nested control method invocations. BZ 7873, local BZ 487. Valery 8044 Podrezov. 8045 8046 Fixed an internal problem with the handling of result objects on the 8047 interpreter result stack. BZ 7872. Valery Podrezov. 8048 8049 Removed obsolete code that handled the case where AML_NAME_OP is the 8050 target 8051 of a reference (Reference.Opcode). This code was no longer necessary. BZ 8052 7874. Valery Podrezov. 8053 8054 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This 8055 was 8056 a 8057 remnant from the previously discontinued 16-bit support. 8058 8059 Example Code and Data Size: These are the sizes for the OS-independent 8060 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8061 debug version of the code includes the debug output trace mechanism and 8062 has 8063 a much larger code and data size. 8064 8065 Previous Release: 8066 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8067 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 8068 Current Release: 8069 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8070 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 8071 8072 ---------------------------------------- 8073 26 January 2007. Summary of changes for version 20070126: 8074 8075 1) ACPI CA Core Subsystem: 8076 8077 Added the 2007 copyright to all module headers and signons. This affects 8078 virtually every file in the ACPICA core subsystem, the iASL compiler, and 8079 the utilities. 8080 8081 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 8082 during a table load. A bad pointer was passed in the case where the DSDT 8083 is 8084 overridden, causing a fault in this case. 8085 8086 Example Code and Data Size: These are the sizes for the OS-independent 8087 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8088 debug version of the code includes the debug output trace mechanism and 8089 has 8090 a much larger code and data size. 8091 8092 Previous Release: 8093 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8094 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 8095 Current Release: 8096 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8097 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 8098 8099 ---------------------------------------- 8100 15 December 2006. Summary of changes for version 20061215: 8101 8102 1) ACPI CA Core Subsystem: 8103 8104 Support for 16-bit ACPICA has been completely removed since it is no 8105 longer 8106 necessary and it clutters the code. All 16-bit macros, types, and 8107 conditional compiles have been removed, cleaning up and simplifying the 8108 code 8109 across the entire subsystem. DOS support is no longer needed since the 8110 bootable Linux firmware kit is now available. 8111 8112 The handler for the Global Lock is now removed during AcpiTerminate to 8113 enable a clean subsystem restart, via the implementation of the 8114 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 8115 HP) 8116 8117 Implemented enhancements to the multithreading support within the 8118 debugger 8119 to enable improved multithreading debugging and evaluation of the 8120 subsystem. 8121 (Valery Podrezov) 8122 8123 Debugger: Enhanced the Statistics/Memory command to emit the total 8124 (maximum) 8125 memory used during the execution, as well as the maximum memory consumed 8126 by 8127 each of the various object types. (Valery Podrezov) 8128 8129 Example Code and Data Size: These are the sizes for the OS-independent 8130 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8131 debug version of the code includes the debug output trace mechanism and 8132 has 8133 a much larger code and data size. 8134 8135 Previous Release: 8136 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 8137 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 8138 Current Release: 8139 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8140 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 8141 8142 8143 2) iASL Compiler/Disassembler and Tools: 8144 8145 AcpiExec: Implemented a new option (-m) to display full memory use 8146 statistics upon subsystem/program termination. (Valery Podrezov) 8147 8148 ---------------------------------------- 8149 09 November 2006. Summary of changes for version 20061109: 8150 8151 1) ACPI CA Core Subsystem: 8152 8153 Optimized the Load ASL operator in the case where the source operand is 8154 an 8155 operation region. Simply map the operation region memory, instead of 8156 performing a bytewise read. (Region must be of type SystemMemory, see 8157 below.) 8158 8159 Fixed the Load ASL operator for the case where the source operand is a 8160 region field. A buffer object is also allowed as the source operand. BZ 8161 480 8162 8163 Fixed a problem where the Load ASL operator allowed the source operand to 8164 be 8165 an operation region of any type. It is now restricted to regions of type 8166 SystemMemory, as per the ACPI specification. BZ 481 8167 8168 Additional cleanup and optimizations for the new Table Manager code. 8169 8170 AcpiEnable will now fail if all of the required ACPI tables are not 8171 loaded 8172 (FADT, FACS, DSDT). BZ 477 8173 8174 Added #pragma pack(8/4) to acobject.h to ensure that the structures in 8175 this 8176 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 8177 manually optimized to be aligned and will not work if it is byte-packed. 8178 8179 Example Code and Data Size: These are the sizes for the OS-independent 8180 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8181 debug version of the code includes the debug output trace mechanism and 8182 has 8183 a much larger code and data size. 8184 8185 Previous Release: 8186 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 8187 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 8188 Current Release: 8189 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 8190 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 8191 8192 8193 2) iASL Compiler/Disassembler and Tools: 8194 8195 Fixed a problem where the presence of the _OSI predefined control method 8196 within complex expressions could cause an internal compiler error. 8197 8198 AcpiExec: Implemented full region support for multiple address spaces. 8199 SpaceId is now part of the REGION object. BZ 429 8200 8201 ---------------------------------------- 8202 11 October 2006. Summary of changes for version 20061011: 8203 8204 1) ACPI CA Core Subsystem: 8205 8206 Completed an AML interpreter performance enhancement for control method 8207 execution. Previously a 2-pass parse/execution, control methods are now 8208 completely parsed and executed in a single pass. This improves overall 8209 interpreter performance by ~25%, reduces code size, and reduces CPU stack 8210 use. (Valery Podrezov + interpreter changes in version 20051202 that 8211 eliminated namespace loading during the pass one parse.) 8212 8213 Implemented _CID support for PCI Root Bridge detection. If the _HID does 8214 not 8215 match the predefined PCI Root Bridge IDs, the _CID list (if present) is 8216 now 8217 obtained and also checked for an ID match. 8218 8219 Implemented additional support for the PCI _ADR execution: upsearch until 8220 a 8221 device scope is found before executing _ADR. This allows PCI_Config 8222 operation regions to be declared locally within control methods 8223 underneath 8224 PCI device objects. 8225 8226 Fixed a problem with a possible race condition between threads executing 8227 AcpiWalkNamespace and the AML interpreter. This condition was removed by 8228 modifying AcpiWalkNamespace to (by default) ignore all temporary 8229 namespace 8230 entries created during any concurrent control method execution. An 8231 additional namespace race condition is known to exist between 8232 AcpiWalkNamespace and the Load/Unload ASL operators and is still under 8233 investigation. 8234 8235 Restructured the AML ParseLoop function, breaking it into several 8236 subfunctions in order to reduce CPU stack use and improve 8237 maintainability. 8238 (Mikhail Kouzmich) 8239 8240 AcpiGetHandle: Fix for parameter validation to detect invalid 8241 combinations 8242 of prefix handle and pathname. BZ 478 8243 8244 Example Code and Data Size: These are the sizes for the OS-independent 8245 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8246 debug version of the code includes the debug output trace mechanism and 8247 has 8248 a much larger code and data size. 8249 8250 Previous Release: 8251 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 8252 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 8253 Current Release: 8254 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 8255 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 8256 8257 2) iASL Compiler/Disassembler and Tools: 8258 8259 Ported the -g option (get local ACPI tables) to the new ACPICA Table 8260 Manager 8261 to restore original behavior. 8262 8263 ---------------------------------------- 8264 27 September 2006. Summary of changes for version 20060927: 8265 8266 1) ACPI CA Core Subsystem: 8267 8268 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 8269 These functions now use a spinlock for mutual exclusion and the interrupt 8270 level indication flag is not needed. 8271 8272 Fixed a problem with the Global Lock where the lock could appear to be 8273 obtained before it is actually obtained. The global lock semaphore was 8274 inadvertently created with one unit instead of zero units. (BZ 464) 8275 Fiodor 8276 Suietov. 8277 8278 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue 8279 during 8280 a read from a buffer or region field. (BZ 458) Fiodor Suietov. 8281 8282 Example Code and Data Size: These are the sizes for the OS-independent 8283 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8284 debug version of the code includes the debug output trace mechanism and 8285 has 8286 a much larger code and data size. 8287 8288 Previous Release: 8289 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 8290 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 8291 Current Release: 8292 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 8293 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 8294 8295 8296 2) iASL Compiler/Disassembler and Tools: 8297 8298 Fixed a compilation problem with the pre-defined Resource Descriptor 8299 field 8300 names where an "object does not exist" error could be incorrectly 8301 generated 8302 if the parent ResourceTemplate pathname places the template within a 8303 different namespace scope than the current scope. (BZ 7212) 8304 8305 Fixed a problem where the compiler could hang after syntax errors 8306 detected 8307 in an ElseIf construct. (BZ 453) 8308 8309 Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 8310 operator. An incorrect output filename was produced when this parameter 8311 was 8312 a null string (""). Now, the original input filename is used as the AML 8313 output filename, with an ".aml" extension. 8314 8315 Implemented a generic batch command mode for the AcpiExec utility 8316 (execute 8317 any AML debugger command) (Valery Podrezov). 8318 8319 ---------------------------------------- 8320 12 September 2006. Summary of changes for version 20060912: 8321 8322 1) ACPI CA Core Subsystem: 8323 8324 Enhanced the implementation of the "serialized mode" of the interpreter 8325 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 8326 specified, instead of creating a serialization semaphore per control 8327 method, 8328 the interpreter lock is simply no longer released before a blocking 8329 operation during control method execution. This effectively makes the AML 8330 Interpreter single-threaded. The overhead of a semaphore per-method is 8331 eliminated. 8332 8333 Fixed a regression where an error was no longer emitted if a control 8334 method 8335 attempts to create 2 objects of the same name. This once again returns 8336 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism 8337 that 8338 will dynamically serialize the control method to possible prevent future 8339 errors. (BZ 440) 8340 8341 Integrated a fix for a problem with PCI Express HID detection in the PCI 8342 Config Space setup procedure. (BZ 7145) 8343 8344 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 8345 AcpiHwInitialize function - the FADT registers are now validated when the 8346 table is loaded. 8347 8348 Added two new warnings during FADT verification - 1) if the FADT is 8349 larger 8350 than the largest known FADT version, and 2) if there is a mismatch 8351 between 8352 a 8353 32-bit block address and the 64-bit X counterpart (when both are non- 8354 zero.) 8355 8356 Example Code and Data Size: These are the sizes for the OS-independent 8357 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8358 debug version of the code includes the debug output trace mechanism and 8359 has 8360 a much larger code and data size. 8361 8362 Previous Release: 8363 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 8364 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 8365 Current Release: 8366 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 8367 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 8368 8369 8370 2) iASL Compiler/Disassembler and Tools: 8371 8372 Fixed a problem with the implementation of the Switch() operator where 8373 the 8374 temporary variable was declared too close to the actual Switch, instead 8375 of 8376 at method level. This could cause a problem if the Switch() operator is 8377 within a while loop, causing an error on the second iteration. (BZ 460) 8378 8379 Disassembler - fix for error emitted for unknown type for target of scope 8380 operator. Now, ignore it and continue. 8381 8382 Disassembly of an FADT now verifies the input FADT and reports any errors 8383 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 8384 8385 Disassembly of raw data buffers with byte initialization data now 8386 prefixes 8387 each output line with the current buffer offset. 8388 8389 Disassembly of ASF! table now includes all variable-length data fields at 8390 the end of some of the subtables. 8391 8392 The disassembler now emits a comment if a buffer appears to be a 8393 ResourceTemplate, but cannot be disassembled as such because the EndTag 8394 does 8395 not appear at the very end of the buffer. 8396 8397 AcpiExec - Added the "-t" command line option to enable the serialized 8398 mode 8399 of the AML interpreter. 8400 8401 ---------------------------------------- 8402 31 August 2006. Summary of changes for version 20060831: 8403 8404 1) ACPI CA Core Subsystem: 8405 8406 Miscellaneous fixes for the Table Manager: 8407 - Correctly initialize internal common FADT for all 64-bit "X" fields 8408 - Fixed a couple table mapping issues during table load 8409 - Fixed a couple alignment issues for IA64 8410 - Initialize input array to zero in AcpiInitializeTables 8411 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 8412 AcpiGetTableByIndex 8413 8414 Change for GPE support: when a "wake" GPE is received, all wake GPEs are 8415 now 8416 immediately disabled to prevent the waking GPE from firing again and to 8417 prevent other wake GPEs from interrupting the wake process. 8418 8419 Added the AcpiGpeCount global that tracks the number of processed GPEs, 8420 to 8421 be used for debugging systems with a large number of ACPI interrupts. 8422 8423 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 8424 both the ACPICA headers and the disassembler. 8425 8426 Example Code and Data Size: These are the sizes for the OS-independent 8427 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8428 debug version of the code includes the debug output trace mechanism and 8429 has 8430 a much larger code and data size. 8431 8432 Previous Release: 8433 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 8434 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 8435 Current Release: 8436 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 8437 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 8438 8439 8440 2) iASL Compiler/Disassembler and Tools: 8441 8442 Disassembler support for the DMAR ACPI table. 8443 8444 ---------------------------------------- 8445 23 August 2006. Summary of changes for version 20060823: 8446 8447 1) ACPI CA Core Subsystem: 8448 8449 The Table Manager component has been completely redesigned and 8450 reimplemented. The new design is much simpler, and reduces the overall 8451 code 8452 and data size of the kernel-resident ACPICA by approximately 5%. Also, it 8453 is 8454 now possible to obtain the ACPI tables very early during kernel 8455 initialization, even before dynamic memory management is initialized. 8456 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 8457 8458 Obsolete ACPICA interfaces: 8459 8460 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel 8461 init 8462 time). 8463 - AcpiLoadTable: Not needed. 8464 - AcpiUnloadTable: Not needed. 8465 8466 New ACPICA interfaces: 8467 8468 - AcpiInitializeTables: Must be called before the table manager can be 8469 used. 8470 - AcpiReallocateRootTable: Used to transfer the root table to dynamically 8471 allocated memory after it becomes available. 8472 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI 8473 tables 8474 in the RSDT/XSDT. 8475 8476 Other ACPICA changes: 8477 8478 - AcpiGetTableHeader returns the actual mapped table header, not a copy. 8479 Use 8480 AcpiOsUnmapMemory to free this mapping. 8481 - AcpiGetTable returns the actual mapped table. The mapping is managed 8482 internally and must not be deleted by the caller. Use of this interface 8483 causes no additional dynamic memory allocation. 8484 - AcpiFindRootPointer: Support for physical addressing has been 8485 eliminated, 8486 it appeared to be unused. 8487 - The interface to AcpiOsMapMemory has changed to be consistent with the 8488 other allocation interfaces. 8489 - The interface to AcpiOsGetRootPointer has changed to eliminate 8490 unnecessary 8491 parameters. 8492 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 8493 64- 8494 bit platforms. Was previously 64 bits on all platforms. 8495 - The interface to the ACPI Global Lock acquire/release macros have 8496 changed 8497 slightly since ACPICA no longer keeps a local copy of the FACS with a 8498 constructed pointer to the actual global lock. 8499 8500 Porting to the new table manager: 8501 8502 - AcpiInitializeTables: Must be called once, and can be called anytime 8503 during the OS initialization process. It allows the host to specify an 8504 area 8505 of memory to be used to store the internal version of the RSDT/XSDT (root 8506 table). This allows the host to access ACPI tables before memory 8507 management 8508 is initialized and running. 8509 - AcpiReallocateRootTable: Can be called after memory management is 8510 running 8511 to copy the root table to a dynamically allocated array, freeing up the 8512 scratch memory specified in the call to AcpiInitializeTables. 8513 - AcpiSubsystemInitialize: This existing interface is independent of the 8514 Table Manager, and does not have to be called before the Table Manager 8515 can 8516 be used, it only must be called before the rest of ACPICA can be used. 8517 - ACPI Tables: Some changes have been made to the names and structure of 8518 the 8519 actbl.h and actbl1.h header files and may require changes to existing 8520 code. 8521 For example, bitfields have been completely removed because of their lack 8522 of 8523 portability across C compilers. 8524 - Update interfaces to the Global Lock acquire/release macros if local 8525 versions are used. (see acwin.h) 8526 8527 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 8528 8529 New files: tbfind.c 8530 8531 Example Code and Data Size: These are the sizes for the OS-independent 8532 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8533 debug version of the code includes the debug output trace mechanism and 8534 has 8535 a much larger code and data size. 8536 8537 Previous Release: 8538 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 8539 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 8540 Current Release: 8541 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 8542 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 8543 8544 8545 2) iASL Compiler/Disassembler and Tools: 8546 8547 No changes for this release. 8548 8549 ---------------------------------------- 8550 21 July 2006. Summary of changes for version 20060721: 8551 8552 1) ACPI CA Core Subsystem: 8553 8554 The full source code for the ASL test suite used to validate the iASL 8555 compiler and the ACPICA core subsystem is being released with the ACPICA 8556 source for the first time. The source is contained in a separate package 8557 and 8558 consists of over 1100 files that exercise all ASL/AML operators. The 8559 package 8560 should appear on the Intel/ACPI web site shortly. (Valery Podrezov, 8561 Fiodor 8562 Suietov) 8563 8564 Completed a new design and implementation for support of the ACPI Global 8565 Lock. On the OS side, the global lock is now treated as a standard AML 8566 mutex. Previously, multiple OS threads could "acquire" the global lock 8567 simultaneously. However, this could cause the BIOS to be starved out of 8568 the 8569 lock - especially in cases such as the Embedded Controller driver where 8570 there is a tight coupling between the OS and the BIOS. 8571 8572 Implemented an optimization for the ACPI Global Lock interrupt mechanism. 8573 The Global Lock interrupt handler no longer queues the execution of a 8574 separate thread to signal the global lock semaphore. Instead, the 8575 semaphore 8576 is signaled directly from the interrupt handler. 8577 8578 Implemented support within the AML interpreter for package objects that 8579 contain a larger AML length (package list length) than the package 8580 element 8581 count. In this case, the length of the package is truncated to match the 8582 package element count. Some BIOS code apparently modifies the package 8583 length 8584 on the fly, and this change supports this behavior. Provides 8585 compatibility 8586 with the MS AML interpreter. (With assistance from Fiodor Suietov) 8587 8588 Implemented a temporary fix for the BankValue parameter of a Bank Field 8589 to 8590 support all constant values, now including the Zero and One opcodes. 8591 Evaluation of this parameter must eventually be converted to a full 8592 TermArg 8593 evaluation. A not-implemented error is now returned (temporarily) for 8594 non- 8595 constant values for this parameter. 8596 8597 Fixed problem reports (Fiodor Suietov) integrated: 8598 - Fix for premature object deletion after CopyObject on Operation Region 8599 (BZ 8600 350) 8601 8602 Example Code and Data Size: These are the sizes for the OS-independent 8603 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8604 debug version of the code includes the debug output trace mechanism and 8605 has 8606 a much larger code and data size. 8607 8608 Previous Release: 8609 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 8610 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 8611 Current Release: 8612 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 8613 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 8614 8615 8616 2) iASL Compiler/Disassembler and Tools: 8617 8618 No changes for this release. 8619 8620 ---------------------------------------- 8621 07 July 2006. Summary of changes for version 20060707: 8622 8623 1) ACPI CA Core Subsystem: 8624 8625 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 8626 that do not allow the initialization of address pointers within packed 8627 structures - even though the hardware itself may support misaligned 8628 transfers. Some of the debug data structures are packed by default to 8629 minimize size. 8630 8631 Added an error message for the case where AcpiOsGetThreadId() returns 8632 zero. 8633 A non-zero value is required by the core ACPICA code to ensure the proper 8634 operation of AML mutexes and recursive control methods. 8635 8636 The DSDT is now the only ACPI table that determines whether the AML 8637 interpreter is in 32-bit or 64-bit mode. Not really a functional change, 8638 but 8639 the hooks for per-table 32/64 switching have been removed from the code. 8640 A 8641 clarification to the ACPI specification is forthcoming in ACPI 3.0B. 8642 8643 Fixed a possible leak of an OwnerID in the error path of 8644 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 8645 deletion to a single place in AcpiTbUninstallTable to correct possible 8646 leaks 8647 when using the AcpiTbDeleteTablesByType interface (with assistance from 8648 Lance Ortiz.) 8649 8650 Fixed a problem with Serialized control methods where the semaphore 8651 associated with the method could be over-signaled after multiple method 8652 invocations. 8653 8654 Fixed two issues with the locking of the internal namespace data 8655 structure. 8656 Both the Unload() operator and AcpiUnloadTable interface now lock the 8657 namespace during the namespace deletion associated with the table unload 8658 (with assistance from Linn Crosetto.) 8659 8660 Fixed problem reports (Valery Podrezov) integrated: 8661 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 8662 8663 Fixed problem reports (Fiodor Suietov) integrated: 8664 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 8665 - On Address Space handler deletion, needless deactivation call (BZ 374) 8666 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 8667 375) 8668 - Possible memory leak, Notify sub-objects of Processor, Power, 8669 ThermalZone 8670 (BZ 376) 8671 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 8672 - Minimum Length of RSDT should be validated (BZ 379) 8673 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 8674 Handler (BZ (380) 8675 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type 8676 loaded 8677 (BZ 381) 8678 8679 Example Code and Data Size: These are the sizes for the OS-independent 8680 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8681 debug version of the code includes the debug output trace mechanism and 8682 has 8683 a much larger code and data size. 8684 8685 Previous Release: 8686 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 8687 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 8688 Current Release: 8689 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 8690 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 8691 8692 8693 2) iASL Compiler/Disassembler and Tools: 8694 8695 Fixed problem reports: 8696 Compiler segfault when ASL contains a long (>1024) String declaration (BZ 8697 436) 8698 8699 ---------------------------------------- 8700 23 June 2006. Summary of changes for version 20060623: 8701 8702 1) ACPI CA Core Subsystem: 8703 8704 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 8705 allows the type to be customized to the host OS for improved efficiency 8706 (since a spinlock is usually a very small object.) 8707 8708 Implemented support for "ignored" bits in the ACPI registers. According 8709 to 8710 the ACPI specification, these bits should be preserved when writing the 8711 registers via a read/modify/write cycle. There are 3 bits preserved in 8712 this 8713 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 8714 8715 Implemented the initial deployment of new OSL mutex interfaces. Since 8716 some 8717 host operating systems have separate mutex and semaphore objects, this 8718 feature was requested. The base code now uses mutexes (and the new mutex 8719 interfaces) wherever a binary semaphore was used previously. However, for 8720 the current release, the mutex interfaces are defined as macros to map 8721 them 8722 to the existing semaphore interfaces. Therefore, no OSL changes are 8723 required 8724 at this time. (See acpiosxf.h) 8725 8726 Fixed several problems with the support for the control method SyncLevel 8727 parameter. The SyncLevel now works according to the ACPI specification 8728 and 8729 in concert with the Mutex SyncLevel parameter, since the current 8730 SyncLevel 8731 is a property of the executing thread. Mutual exclusion for control 8732 methods 8733 is now implemented with a mutex instead of a semaphore. 8734 8735 Fixed three instances of the use of the C shift operator in the bitfield 8736 support code (exfldio.c) to avoid the use of a shift value larger than 8737 the 8738 target data width. The behavior of C compilers is undefined in this case 8739 and 8740 can cause unpredictable results, and therefore the case must be detected 8741 and 8742 avoided. (Fiodor Suietov) 8743 8744 Added an info message whenever an SSDT or OEM table is loaded dynamically 8745 via the Load() or LoadTable() ASL operators. This should improve 8746 debugging 8747 capability since it will show exactly what tables have been loaded 8748 (beyond 8749 the tables present in the RSDT/XSDT.) 8750 8751 Example Code and Data Size: These are the sizes for the OS-independent 8752 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8753 debug version of the code includes the debug output trace mechanism and 8754 has 8755 a much larger code and data size. 8756 8757 Previous Release: 8758 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 8759 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 8760 Current Release: 8761 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 8762 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 8763 8764 8765 2) iASL Compiler/Disassembler and Tools: 8766 8767 No changes for this release. 8768 8769 ---------------------------------------- 8770 08 June 2006. Summary of changes for version 20060608: 8771 8772 1) ACPI CA Core Subsystem: 8773 8774 Converted the locking mutex used for the ACPI hardware to a spinlock. 8775 This 8776 change should eliminate all problems caused by attempting to acquire a 8777 semaphore at interrupt level, and it means that all ACPICA external 8778 interfaces that directly access the ACPI hardware can be safely called 8779 from 8780 interrupt level. OSL code that implements the semaphore interfaces should 8781 be 8782 able to eliminate any workarounds for being called at interrupt level. 8783 8784 Fixed a regression introduced in 20060526 where the ACPI device 8785 initialization could be prematurely aborted with an AE_NOT_FOUND if a 8786 device 8787 did not have an optional _INI method. 8788 8789 Fixed an IndexField issue where a write to the Data Register should be 8790 limited in size to the AccessSize (width) of the IndexField itself. (BZ 8791 433, 8792 Fiodor Suietov) 8793 8794 Fixed problem reports (Valery Podrezov) integrated: 8795 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 8796 8797 Fixed problem reports (Fiodor Suietov) integrated: 8798 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 8799 8800 Removed four global mutexes that were obsolete and were no longer being 8801 used. 8802 8803 Example Code and Data Size: These are the sizes for the OS-independent 8804 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8805 debug version of the code includes the debug output trace mechanism and 8806 has 8807 a much larger code and data size. 8808 8809 Previous Release: 8810 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 8811 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 8812 Current Release: 8813 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 8814 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 8815 8816 8817 2) iASL Compiler/Disassembler and Tools: 8818 8819 Fixed a fault when using -g option (get tables from registry) on Windows 8820 machines. 8821 8822 Fixed problem reports integrated: 8823 - Generate error if CreateField NumBits parameter is zero. (BZ 405) 8824 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 8825 Suietov) 8826 - Global table revision override (-r) is ignored (BZ 413) 8827 8828 ---------------------------------------- 8829 26 May 2006. Summary of changes for version 20060526: 8830 8831 1) ACPI CA Core Subsystem: 8832 8833 Restructured, flattened, and simplified the internal interfaces for 8834 namespace object evaluation - resulting in smaller code, less CPU stack 8835 use, 8836 and fewer interfaces. (With assistance from Mikhail Kouzmich) 8837 8838 Fixed a problem with the CopyObject operator where the first parameter 8839 was 8840 not typed correctly for the parser, interpreter, compiler, and 8841 disassembler. 8842 Caused various errors and unexpected behavior. 8843 8844 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 8845 produced incorrect results with some C compilers. Since the behavior of C 8846 compilers when the shift value is larger than the datatype width is 8847 apparently not well defined, the interpreter now detects this condition 8848 and 8849 simply returns zero as expected in all such cases. (BZ 395) 8850 8851 Fixed problem reports (Valery Podrezov) integrated: 8852 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 8853 - Allow interpreter to handle nested method declarations (BZ 5361) 8854 8855 Fixed problem reports (Fiodor Suietov) integrated: 8856 - AcpiTerminate doesn't free debug memory allocation list objects (BZ 8857 355) 8858 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 8859 356) 8860 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 8861 - Resource Manager should return AE_TYPE for non-device objects (BZ 358) 8862 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 8863 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 8864 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 8865 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 8866 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 8867 365) 8868 - Status of the Global Initialization Handler call not used (BZ 366) 8869 - Incorrect object parameter to Global Initialization Handler (BZ 367) 8870 8871 Example Code and Data Size: These are the sizes for the OS-independent 8872 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8873 debug version of the code includes the debug output trace mechanism and 8874 has 8875 a much larger code and data size. 8876 8877 Previous Release: 8878 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 8879 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 8880 Current Release: 8881 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 8882 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 8883 8884 8885 2) iASL Compiler/Disassembler and Tools: 8886 8887 Modified the parser to allow the names IO, DMA, and IRQ to be used as 8888 namespace identifiers with no collision with existing resource descriptor 8889 macro names. This provides compatibility with other ASL compilers and is 8890 most useful for disassembly/recompilation of existing tables without 8891 parse 8892 errors. (With assistance from Thomas Renninger) 8893 8894 Disassembler: fixed an incorrect disassembly problem with the 8895 DataTableRegion and CopyObject operators. Fixed a possible fault during 8896 disassembly of some Alias operators. 8897 8898 ---------------------------------------- 8899 12 May 2006. Summary of changes for version 20060512: 8900 8901 1) ACPI CA Core Subsystem: 8902 8903 Replaced the AcpiOsQueueForExecution interface with a new interface named 8904 AcpiOsExecute. The major difference is that the new interface does not 8905 have 8906 a Priority parameter, this appeared to be useless and has been replaced 8907 by 8908 a 8909 Type parameter. The Type tells the host what type of execution is being 8910 requested, such as global lock handler, notify handler, GPE handler, etc. 8911 This allows the host to queue and execute the request as appropriate for 8912 the 8913 request type, possibly using different work queues and different 8914 priorities 8915 for the various request types. This enables fixes for multithreading 8916 deadlock problems such as BZ #5534, and will require changes to all 8917 existing 8918 OS interface layers. (Alexey Starikovskiy and Bob Moore) 8919 8920 Fixed a possible memory leak associated with the support for the so- 8921 called 8922 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 8923 Suietov) 8924 8925 Fixed a problem with the Load() operator where a table load from an 8926 operation region could overwrite an internal table buffer by up to 7 8927 bytes 8928 and cause alignment faults on IPF systems. (With assistance from Luming 8929 Yu) 8930 8931 Example Code and Data Size: These are the sizes for the OS-independent 8932 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8933 debug version of the code includes the debug output trace mechanism and 8934 has 8935 a much larger code and data size. 8936 8937 Previous Release: 8938 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 8939 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 8940 Current Release: 8941 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 8942 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 8943 8944 8945 8946 2) iASL Compiler/Disassembler and Tools: 8947 8948 Disassembler: Implemented support to cross reference the internal 8949 namespace 8950 and automatically generate ASL External() statements for symbols not 8951 defined 8952 within the current table being disassembled. This will simplify the 8953 disassembly and recompilation of interdependent tables such as SSDTs 8954 since 8955 these statements will no longer have to be added manually. 8956 8957 Disassembler: Implemented experimental support to automatically detect 8958 invocations of external control methods and generate appropriate 8959 External() 8960 statements. This is problematic because the AML cannot be correctly 8961 parsed 8962 until the number of arguments for each control method is known. 8963 Currently, 8964 standalone method invocations and invocations as the source operand of a 8965 Store() statement are supported. 8966 8967 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 8968 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 8969 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 8970 more readable and likely closer to the original ASL source. 8971 8972 ---------------------------------------- 8973 21 April 2006. Summary of changes for version 20060421: 8974 8975 1) ACPI CA Core Subsystem: 8976 8977 Removed a device initialization optimization introduced in 20051216 where 8978 the _STA method was not run unless an _INI was also present for the same 8979 device. This optimization could cause problems because it could allow 8980 _INI 8981 methods to be run within a not-present device subtree. (If a not-present 8982 device had no _INI, _STA would not be run, the not-present status would 8983 not 8984 be discovered, and the children of the device would be incorrectly 8985 traversed.) 8986 8987 Implemented a new _STA optimization where namespace subtrees that do not 8988 contain _INI are identified and ignored during device initialization. 8989 Selectively running _STA can significantly improve boot time on large 8990 machines (with assistance from Len Brown.) 8991 8992 Implemented support for the device initialization case where the returned 8993 _STA flags indicate a device not-present but functioning. In this case, 8994 _INI 8995 is not run, but the device children are examined for presence, as per the 8996 ACPI specification. 8997 8998 Implemented an additional change to the IndexField support in order to 8999 conform to MS behavior. The value written to the Index Register is not 9000 simply a byte offset, it is a byte offset in units of the access width of 9001 the parent Index Field. (Fiodor Suietov) 9002 9003 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 9004 interface is called during the creation of all AML operation regions, and 9005 allows the host OS to exert control over what addresses it will allow the 9006 AML code to access. Operation Regions whose addresses are disallowed will 9007 cause a runtime exception when they are actually accessed (will not 9008 affect 9009 or abort table loading.) See oswinxf or osunixxf for an example 9010 implementation. 9011 9012 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 9013 interface allows the host OS to match the various "optional" 9014 interface/behavior strings for the _OSI predefined control method as 9015 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 9016 for an example implementation. 9017 9018 Restructured and corrected various problems in the exception handling 9019 code 9020 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 9021 (with assistance from Takayoshi Kochi.) 9022 9023 Modified the Linux source converter to ignore quoted string literals 9024 while 9025 converting identifiers from mixed to lower case. This will correct 9026 problems 9027 with the disassembler and other areas where such strings must not be 9028 modified. 9029 9030 The ACPI_FUNCTION_* macros no longer require quotes around the function 9031 name. This allows the Linux source converter to convert the names, now 9032 that 9033 the converter ignores quoted strings. 9034 9035 Example Code and Data Size: These are the sizes for the OS-independent 9036 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9037 debug version of the code includes the debug output trace mechanism and 9038 has 9039 a much larger code and data size. 9040 9041 Previous Release: 9042 9043 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 9044 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 9045 Current Release: 9046 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 9047 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 9048 9049 9050 2) iASL Compiler/Disassembler and Tools: 9051 9052 Implemented 3 new warnings for iASL, and implemented multiple warning 9053 levels 9054 (w2 flag). 9055 9056 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is 9057 not 9058 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 9059 check for the possible timeout, a warning is issued. 9060 9061 2) Useless operators: If an ASL operator does not specify an optional 9062 target 9063 operand and it also does not use the function return value from the 9064 operator, a warning is issued since the operator effectively does 9065 nothing. 9066 9067 3) Unreferenced objects: If a namespace object is created, but never 9068 referenced, a warning is issued. This is a warning level 2 since there 9069 are 9070 cases where this is ok, such as when a secondary table is loaded that 9071 uses 9072 the unreferenced objects. Even so, care is taken to only flag objects 9073 that 9074 don't look like they will ever be used. For example, the reserved methods 9075 (starting with an underscore) are usually not referenced because it is 9076 expected that the OS will invoke them. 9077 9078 ---------------------------------------- 9079 31 March 2006. Summary of changes for version 20060331: 9080 9081 1) ACPI CA Core Subsystem: 9082 9083 Implemented header file support for the following additional ACPI tables: 9084 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this 9085 support, 9086 all current and known ACPI tables are now defined in the ACPICA headers 9087 and 9088 are available for use by device drivers and other software. 9089 9090 Implemented support to allow tables that contain ACPI names with invalid 9091 characters to be loaded. Previously, this would cause the table load to 9092 fail, but since there are several known cases of such tables on existing 9093 machines, this change was made to enable ACPI support for them. Also, 9094 this 9095 matches the behavior of the Microsoft ACPI implementation. 9096 9097 Fixed a couple regressions introduced during the memory optimization in 9098 the 9099 20060317 release. The namespace node definition required additional 9100 reorganization and an internal datatype that had been changed to 8-bit 9101 was 9102 restored to 32-bit. (Valery Podrezov) 9103 9104 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 9105 could be passed through to AcpiOsReleaseObject which is unexpected. Such 9106 null pointers are now trapped and ignored, matching the behavior of the 9107 previous implementation before the deployment of AcpiOsReleaseObject. 9108 (Valery Podrezov, Fiodor Suietov) 9109 9110 Fixed a memory mapping leak during the deletion of a SystemMemory 9111 operation 9112 region where a cached memory mapping was not deleted. This became a 9113 noticeable problem for operation regions that are defined within 9114 frequently 9115 used control methods. (Dana Meyers) 9116 9117 Reorganized the ACPI table header files into two main files: one for the 9118 ACPI tables consumed by the ACPICA core, and another for the 9119 miscellaneous 9120 ACPI tables that are consumed by the drivers and other software. The 9121 various 9122 FADT definitions were merged into one common section and three different 9123 tables (ACPI 1.0, 1.0+, and 2.0) 9124 9125 Example Code and Data Size: These are the sizes for the OS-independent 9126 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9127 debug version of the code includes the debug output trace mechanism and 9128 has 9129 a much larger code and data size. 9130 9131 Previous Release: 9132 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 9133 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 9134 Current Release: 9135 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 9136 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 9137 9138 9139 2) iASL Compiler/Disassembler and Tools: 9140 9141 Disassembler: Implemented support to decode and format all non-AML ACPI 9142 tables (tables other than DSDTs and SSDTs.) This includes the new tables 9143 added to the ACPICA headers, therefore all current and known ACPI tables 9144 are 9145 supported. 9146 9147 Disassembler: The change to allow ACPI names with invalid characters also 9148 enables the disassembly of such tables. Invalid characters within names 9149 are 9150 changed to '*' to make the name printable; the iASL compiler will still 9151 generate an error for such names, however, since this is an invalid ACPI 9152 character. 9153 9154 Implemented an option for AcpiXtract (-a) to extract all tables found in 9155 the 9156 input file. The default invocation extracts only the DSDTs and SSDTs. 9157 9158 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 9159 makefile for the AcpiXtract utility. 9160 9161 ---------------------------------------- 9162 17 March 2006. Summary of changes for version 20060317: 9163 9164 1) ACPI CA Core Subsystem: 9165 9166 Implemented the use of a cache object for all internal namespace nodes. 9167 Since there are about 1000 static nodes in a typical system, this will 9168 decrease memory use for cache implementations that minimize per- 9169 allocation 9170 overhead (such as a slab allocator.) 9171 9172 Removed the reference count mechanism for internal namespace nodes, since 9173 it 9174 was deemed unnecessary. This reduces the size of each namespace node by 9175 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit 9176 case, 9177 and 32 bytes for the 64-bit case. 9178 9179 Optimized several internal data structures to reduce object size on 64- 9180 bit 9181 platforms by packing data within the 64-bit alignment. This includes the 9182 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 9183 instances corresponding to the namespace objects. 9184 9185 Added two new strings for the predefined _OSI method: "Windows 2001.1 9186 SP1" 9187 and "Windows 2006". 9188 9189 Split the allocation tracking mechanism out to a separate file, from 9190 utalloc.c to uttrack.c. This mechanism appears to be only useful for 9191 application-level code. Kernels may wish to not include uttrack.c in 9192 distributions. 9193 9194 Removed all remnants of the obsolete ACPI_REPORT_* macros and the 9195 associated 9196 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 9197 macros.) 9198 9199 Code and Data Size: These are the sizes for the acpica.lib produced by 9200 the 9201 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 9202 ACPI 9203 driver or OSPM code. The debug version of the code includes the debug 9204 output 9205 trace mechanism and has a much larger code and data size. Note that these 9206 values will vary depending on the efficiency of the compiler and the 9207 compiler options used during generation. 9208 9209 Previous Release: 9210 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 9211 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 9212 Current Release: 9213 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 9214 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 9215 9216 9217 2) iASL Compiler/Disassembler and Tools: 9218 9219 Implemented an ANSI C version of the acpixtract utility. This version 9220 will 9221 automatically extract the DSDT and all SSDTs from the input acpidump text 9222 file and dump the binary output to separate files. It can also display a 9223 summary of the input file including the headers for each table found and 9224 will extract any single ACPI table, with any signature. (See 9225 source/tools/acpixtract) 9226 9227 ---------------------------------------- 9228 10 March 2006. Summary of changes for version 20060310: 9229 9230 1) ACPI CA Core Subsystem: 9231 9232 Tagged all external interfaces to the subsystem with the new 9233 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to 9234 assist 9235 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 9236 macro. The default definition is NULL. 9237 9238 Added the ACPI_THREAD_ID type for the return value from 9239 AcpiOsGetThreadId. 9240 This allows the host to define this as necessary to simplify kernel 9241 integration. The default definition is ACPI_NATIVE_UINT. 9242 9243 Fixed two interpreter problems related to error processing, the deletion 9244 of 9245 objects, and placing invalid pointers onto the internal operator result 9246 stack. BZ 6028, 6151 (Valery Podrezov) 9247 9248 Increased the reference count threshold where a warning is emitted for 9249 large 9250 reference counts in order to eliminate unnecessary warnings on systems 9251 with 9252 large namespaces (especially 64-bit.) Increased the value from 0x400 to 9253 0x800. 9254 9255 Due to universal disagreement as to the meaning of the 'c' in the 9256 calloc() 9257 function, the ACPI_MEM_CALLOCATE macro has been renamed to 9258 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 9259 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 9260 ACPI_FREE. 9261 9262 Code and Data Size: These are the sizes for the acpica.lib produced by 9263 the 9264 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 9265 ACPI 9266 driver or OSPM code. The debug version of the code includes the debug 9267 output 9268 trace mechanism and has a much larger code and data size. Note that these 9269 values will vary depending on the efficiency of the compiler and the 9270 compiler options used during generation. 9271 9272 Previous Release: 9273 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 9274 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 9275 Current Release: 9276 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 9277 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 9278 9279 9280 2) iASL Compiler/Disassembler: 9281 9282 Disassembler: implemented support for symbolic resource descriptor 9283 references. If a CreateXxxxField operator references a fixed offset 9284 within 9285 a 9286 resource descriptor, a name is assigned to the descriptor and the offset 9287 is 9288 translated to the appropriate resource tag and pathname. The addition of 9289 this support brings the disassembled code very close to the original ASL 9290 source code and helps eliminate run-time errors when the disassembled 9291 code 9292 is modified (and recompiled) in such a way as to invalidate the original 9293 fixed offsets. 9294 9295 Implemented support for a Descriptor Name as the last parameter to the 9296 ASL 9297 Register() macro. This parameter was inadvertently left out of the ACPI 9298 specification, and will be added for ACPI 3.0b. 9299 9300 Fixed a problem where the use of the "_OSI" string (versus the full path 9301 "\_OSI") caused an internal compiler error. ("No back ptr to op") 9302 9303 Fixed a problem with the error message that occurs when an invalid string 9304 is 9305 used for a _HID object (such as one with an embedded asterisk: 9306 "*PNP010A".) 9307 The correct message is now displayed. 9308 9309 ---------------------------------------- 9310 17 February 2006. Summary of changes for version 20060217: 9311 9312 1) ACPI CA Core Subsystem: 9313 9314 Implemented a change to the IndexField support to match the behavior of 9315 the 9316 Microsoft AML interpreter. The value written to the Index register is now 9317 a 9318 byte offset, no longer an index based upon the width of the Data 9319 register. 9320 This should fix IndexField problems seen on some machines where the Data 9321 register is not exactly one byte wide. The ACPI specification will be 9322 clarified on this point. 9323 9324 Fixed a problem where several resource descriptor types could overrun the 9325 internal descriptor buffer due to size miscalculation: VendorShort, 9326 VendorLong, and Interrupt. This was noticed on IA64 machines, but could 9327 affect all platforms. 9328 9329 Fixed a problem where individual resource descriptors were misaligned 9330 within 9331 the internal buffer, causing alignment faults on IA64 platforms. 9332 9333 Code and Data Size: These are the sizes for the acpica.lib produced by 9334 the 9335 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 9336 ACPI 9337 driver or OSPM code. The debug version of the code includes the debug 9338 output 9339 trace mechanism and has a much larger code and data size. Note that these 9340 values will vary depending on the efficiency of the compiler and the 9341 compiler options used during generation. 9342 9343 Previous Release: 9344 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 9345 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 9346 Current Release: 9347 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 9348 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 9349 9350 9351 2) iASL Compiler/Disassembler: 9352 9353 Implemented support for new reserved names: _WDG and _WED are Microsoft 9354 extensions for Windows Instrumentation Management, _TDL is a new ACPI- 9355 defined method (Throttling Depth Limit.) 9356 9357 Fixed a problem where a zero-length VendorShort or VendorLong resource 9358 descriptor was incorrectly emitted as a descriptor of length one. 9359 9360 ---------------------------------------- 9361 10 February 2006. Summary of changes for version 20060210: 9362 9363 1) ACPI CA Core Subsystem: 9364 9365 Removed a couple of extraneous ACPI_ERROR messages that appeared during 9366 normal execution. These became apparent after the conversion from 9367 ACPI_DEBUG_PRINT. 9368 9369 Fixed a problem where the CreateField operator could hang if the BitIndex 9370 or 9371 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 9372 9373 Fixed a problem where a DeRefOf operation on a buffer object incorrectly 9374 failed with an exception. This also fixes a couple of related RefOf and 9375 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 9376 9377 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead 9378 of 9379 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, 9380 BZ 9381 5480) 9382 9383 Implemented a memory cleanup at the end of the execution of each 9384 iteration 9385 of an AML While() loop, preventing the accumulation of outstanding 9386 objects. 9387 (Valery Podrezov, BZ 5427) 9388 9389 Eliminated a chunk of duplicate code in the object resolution code. 9390 (Valery 9391 Podrezov, BZ 5336) 9392 9393 Fixed several warnings during the 64-bit code generation. 9394 9395 The AcpiSrc source code conversion tool now inserts one line of 9396 whitespace 9397 after an if() statement that is followed immediately by a comment, 9398 improving 9399 readability of the Linux code. 9400 9401 Code and Data Size: The current and previous library sizes for the core 9402 subsystem are shown below. These are the code and data sizes for the 9403 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9404 These 9405 values do not include any ACPI driver or OSPM code. The debug version of 9406 the 9407 code includes the debug output trace mechanism and has a much larger code 9408 and data size. Note that these values will vary depending on the 9409 efficiency 9410 of the compiler and the compiler options used during generation. 9411 9412 Previous Release: 9413 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 9414 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 9415 Current Release: 9416 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 9417 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 9418 9419 9420 2) iASL Compiler/Disassembler: 9421 9422 Fixed a problem with the disassembly of a BankField operator with a 9423 complex 9424 expression for the BankValue parameter. 9425 9426 ---------------------------------------- 9427 27 January 2006. Summary of changes for version 20060127: 9428 9429 1) ACPI CA Core Subsystem: 9430 9431 Implemented support in the Resource Manager to allow unresolved 9432 namestring 9433 references within resource package objects for the _PRT method. This 9434 support 9435 is in addition to the previously implemented unresolved reference support 9436 within the AML parser. If the interpreter slack mode is enabled, these 9437 unresolved references will be passed through to the caller as a NULL 9438 package 9439 entry. 9440 9441 Implemented and deployed new macros and functions for error and warning 9442 messages across the subsystem. These macros are simpler and generate less 9443 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 9444 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 9445 macros remain defined to allow ACPI drivers time to migrate to the new 9446 macros. 9447 9448 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of 9449 the 9450 Acquire/Release Lock OSL interfaces. 9451 9452 Fixed a problem where Alias ASL operators are sometimes not correctly 9453 resolved, in both the interpreter and the iASL compiler. 9454 9455 Fixed several problems with the implementation of the 9456 ConcatenateResTemplate 9457 ASL operator. As per the ACPI specification, zero length buffers are now 9458 treated as a single EndTag. One-length buffers always cause a fatal 9459 exception. Non-zero length buffers that do not end with a full 2-byte 9460 EndTag 9461 cause a fatal exception. 9462 9463 Fixed a possible structure overwrite in the AcpiGetObjectInfo external 9464 interface. (With assistance from Thomas Renninger) 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: 83.1K Code, 18.4K Data, 101.5K Total 9479 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 9480 Current Release: 9481 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 9482 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 9483 9484 9485 2) iASL Compiler/Disassembler: 9486 9487 Fixed an internal error that was generated for any forward references to 9488 ASL 9489 Alias objects. 9490 9491 ---------------------------------------- 9492 13 January 2006. Summary of changes for version 20060113: 9493 9494 1) ACPI CA Core Subsystem: 9495 9496 Added 2006 copyright to all module headers and signons. This affects 9497 virtually every file in the ACPICA core subsystem, iASL compiler, and the 9498 utilities. 9499 9500 Enhanced the ACPICA error reporting in order to simplify user migration 9501 to 9502 the non-debug version of ACPICA. Replaced all instances of the 9503 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN 9504 debug 9505 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 9506 respectively. This preserves all error and warning messages in the non- 9507 debug 9508 version of the ACPICA code (this has been referred to as the "debug lite" 9509 option.) Over 200 cases were converted to create a total of over 380 9510 error/warning messages across the ACPICA code. This increases the code 9511 and 9512 data size of the default non-debug version of the code somewhat (about 9513 13K), 9514 but all error/warning reporting may be disabled if desired (and code 9515 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 9516 configuration option. The size of the debug version of ACPICA remains 9517 about 9518 the same. 9519 9520 Fixed a memory leak within the AML Debugger "Set" command. One object was 9521 not properly deleted for every successful invocation of the command. 9522 9523 Code and Data Size: The current and previous library sizes for the core 9524 subsystem are shown below. These are the code and data sizes for the 9525 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9526 These 9527 values do not include any ACPI driver or OSPM code. The debug version of 9528 the 9529 code includes the debug output trace mechanism and has a much larger code 9530 and data size. Note that these values will vary depending on the 9531 efficiency 9532 of the compiler and the compiler options used during generation. 9533 9534 Previous Release: 9535 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 9536 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 9537 Current Release: 9538 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 9539 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 9540 9541 9542 2) iASL Compiler/Disassembler: 9543 9544 The compiler now officially supports the ACPI 3.0a specification that was 9545 released on December 30, 2005. (Specification is available at 9546 www.acpi.info) 9547 9548 ---------------------------------------- 9549 16 December 2005. Summary of changes for version 20051216: 9550 9551 1) ACPI CA Core Subsystem: 9552 9553 Implemented optional support to allow unresolved names within ASL Package 9554 objects. A null object is inserted in the package when a named reference 9555 cannot be located in the current namespace. Enabled via the interpreter 9556 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on 9557 machines 9558 that contain such code. 9559 9560 Implemented an optimization to the initialization sequence that can 9561 improve 9562 boot time. During ACPI device initialization, the _STA method is now run 9563 if 9564 and only if the _INI method exists. The _STA method is used to determine 9565 if 9566 the device is present; An _INI can only be run if _STA returns present, 9567 but 9568 it is a waste of time to run the _STA method if the _INI does not exist. 9569 (Prototype and assistance from Dong Wei) 9570 9571 Implemented use of the C99 uintptr_t for the pointer casting macros if it 9572 is 9573 available in the current compiler. Otherwise, the default (void *) cast 9574 is 9575 used as before. 9576 9577 Fixed some possible memory leaks found within the execution path of the 9578 Break, Continue, If, and CreateField operators. (Valery Podrezov) 9579 9580 Fixed a problem introduced in the 20051202 release where an exception is 9581 generated during method execution if a control method attempts to declare 9582 another method. 9583 9584 Moved resource descriptor string constants that are used by both the AML 9585 disassembler and AML debugger to the common utilities directory so that 9586 these components are independent. 9587 9588 Implemented support in the AcpiExec utility (-e switch) to globally 9589 ignore 9590 exceptions during control method execution (method is not aborted.) 9591 9592 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 9593 generation. 9594 9595 Code and Data Size: The current and previous library sizes for the core 9596 subsystem are shown below. These are the code and data sizes for the 9597 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9598 These 9599 values do not include any ACPI driver or OSPM code. The debug version of 9600 the 9601 code includes the debug output trace mechanism and has a much larger code 9602 and data size. Note that these values will vary depending on the 9603 efficiency 9604 of the compiler and the compiler options used during generation. 9605 9606 Previous Release: 9607 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 9608 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 9609 Current Release: 9610 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 9611 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 9612 9613 9614 2) iASL Compiler/Disassembler: 9615 9616 Fixed a problem where a CPU stack overflow fault could occur if a 9617 recursive 9618 method call was made from within a Return statement. 9619 9620 ---------------------------------------- 9621 02 December 2005. Summary of changes for version 20051202: 9622 9623 1) ACPI CA Core Subsystem: 9624 9625 Modified the parsing of control methods to no longer create namespace 9626 objects during the first pass of the parse. Objects are now created only 9627 during the execute phase, at the moment the namespace creation operator 9628 is 9629 encountered in the AML (Name, OperationRegion, CreateByteField, etc.) 9630 This 9631 should eliminate ALREADY_EXISTS exceptions seen on some machines where 9632 reentrant control methods are protected by an AML mutex. The mutex will 9633 now 9634 correctly block multiple threads from attempting to create the same 9635 object 9636 more than once. 9637 9638 Increased the number of available Owner Ids for namespace object tracking 9639 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen 9640 on 9641 some machines with a large number of ACPI tables (either static or 9642 dynamic). 9643 9644 Fixed a problem with the AcpiExec utility where a fault could occur when 9645 the 9646 -b switch (batch mode) is used. 9647 9648 Enhanced the namespace dump routine to output the owner ID for each 9649 namespace object. 9650 9651 Code and Data Size: The current and previous library sizes for the core 9652 subsystem are shown below. These are the code and data sizes for the 9653 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9654 These 9655 values do not include any ACPI driver or OSPM code. The debug version of 9656 the 9657 code includes the debug output trace mechanism and has a much larger code 9658 and data size. Note that these values will vary depending on the 9659 efficiency 9660 of the compiler and the compiler options used during generation. 9661 9662 Previous Release: 9663 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 9664 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 9665 Current Release: 9666 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 9667 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 9668 9669 9670 2) iASL Compiler/Disassembler: 9671 9672 Fixed a parse error during compilation of certain Switch/Case constructs. 9673 To 9674 simplify the parse, the grammar now allows for multiple Default 9675 statements 9676 and this error is now detected and flagged during the analysis phase. 9677 9678 Disassembler: The disassembly now includes the contents of the original 9679 table header within a comment at the start of the file. This includes the 9680 name and version of the original ASL compiler. 9681 9682 ---------------------------------------- 9683 17 November 2005. Summary of changes for version 20051117: 9684 9685 1) ACPI CA Core Subsystem: 9686 9687 Fixed a problem in the AML parser where the method thread count could be 9688 decremented below zero if any errors occurred during the method parse 9689 phase. 9690 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some 9691 machines. 9692 This also fixed a related regression with the mechanism that detects and 9693 corrects methods that cannot properly handle reentrancy (related to the 9694 deployment of the new OwnerId mechanism.) 9695 9696 Eliminated the pre-parsing of control methods (to detect errors) during 9697 table load. Related to the problem above, this was causing unwind issues 9698 if 9699 any errors occurred during the parse, and it seemed to be overkill. A 9700 table 9701 load should not be aborted if there are problems with any single control 9702 method, thus rendering this feature rather pointless. 9703 9704 Fixed a problem with the new table-driven resource manager where an 9705 internal 9706 buffer overflow could occur for small resource templates. 9707 9708 Implemented a new external interface, AcpiGetVendorResource. This 9709 interface 9710 will find and return a vendor-defined resource descriptor within a _CRS 9711 or 9712 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn 9713 Helgaas. 9714 9715 Removed the length limit (200) on string objects as per the upcoming ACPI 9716 3.0A specification. This affects the following areas of the interpreter: 9717 1) 9718 any implicit conversion of a Buffer to a String, 2) a String object 9719 result 9720 of the ASL Concatentate operator, 3) the String object result of the ASL 9721 ToString operator. 9722 9723 Fixed a problem in the Windows OS interface layer (OSL) where a 9724 WAIT_FOREVER 9725 on a semaphore object would incorrectly timeout. This allows the 9726 multithreading features of the AcpiExec utility to work properly under 9727 Windows. 9728 9729 Updated the Linux makefiles for the iASL compiler and AcpiExec to include 9730 the recently added file named "utresrc.c". 9731 9732 Code and Data Size: The current and previous library sizes for the core 9733 subsystem are shown below. These are the code and data sizes for the 9734 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9735 These 9736 values do not include any ACPI driver or OSPM code. The debug version of 9737 the 9738 code includes the debug output trace mechanism and has a much larger code 9739 and data size. Note that these values will vary depending on the 9740 efficiency 9741 of the compiler and the compiler options used during generation. 9742 9743 Previous Release: 9744 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 9745 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 9746 Current Release: 9747 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 9748 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 9749 9750 9751 2) iASL Compiler/Disassembler: 9752 9753 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 9754 specification. For the iASL compiler, this means that string literals 9755 within 9756 the source ASL can be of any length. 9757 9758 Enhanced the listing output to dump the AML code for resource descriptors 9759 immediately after the ASL code for each descriptor, instead of in a block 9760 at 9761 the end of the entire resource template. 9762 9763 Enhanced the compiler debug output to dump the entire original parse tree 9764 constructed during the parse phase, before any transforms are applied to 9765 the 9766 tree. The transformed tree is dumped also. 9767 9768 ---------------------------------------- 9769 02 November 2005. Summary of changes for version 20051102: 9770 9771 1) ACPI CA Core Subsystem: 9772 9773 Modified the subsystem initialization sequence to improve GPE support. 9774 The 9775 GPE initialization has been split into two parts in order to defer 9776 execution 9777 of the _PRW methods (Power Resources for Wake) until after the hardware 9778 is 9779 fully initialized and the SCI handler is installed. This allows the _PRW 9780 methods to access fields protected by the Global Lock. This will fix 9781 systems 9782 where a NO_GLOBAL_LOCK exception has been seen during initialization. 9783 9784 Converted the ACPI internal object disassemble and display code within 9785 the 9786 AML debugger to fully table-driven operation, reducing code size and 9787 increasing maintainability. 9788 9789 Fixed a regression with the ConcatenateResTemplate() ASL operator 9790 introduced 9791 in the 20051021 release. 9792 9793 Implemented support for "local" internal ACPI object types within the 9794 debugger "Object" command and the AcpiWalkNamespace external interfaces. 9795 These local types include RegionFields, BankFields, IndexFields, Alias, 9796 and 9797 reference objects. 9798 9799 Moved common AML resource handling code into a new file, "utresrc.c". 9800 This 9801 code is shared by both the Resource Manager and the AML Debugger. 9802 9803 Code and Data Size: The current and previous library sizes for the core 9804 subsystem are shown below. These are the code and data sizes for the 9805 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9806 These 9807 values do not include any ACPI driver or OSPM code. The debug version of 9808 the 9809 code includes the debug output trace mechanism and has a much larger code 9810 and data size. Note that these values will vary depending on the 9811 efficiency 9812 of the compiler and the compiler options used during generation. 9813 9814 Previous Release: 9815 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 9816 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 9817 Current Release: 9818 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 9819 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 9820 9821 9822 2) iASL Compiler/Disassembler: 9823 9824 Fixed a problem with very large initializer lists (more than 4000 9825 elements) 9826 for both Buffer and Package objects where the parse stack could overflow. 9827 9828 Enhanced the pre-compile source code scan for non-ASCII characters to 9829 ignore 9830 characters within comment fields. The scan is now always performed and is 9831 no 9832 longer optional, detecting invalid characters within a source file 9833 immediately rather than during the parse phase or later. 9834 9835 Enhanced the ASL grammar definition to force early reductions on all 9836 list- 9837 style grammar elements so that the overall parse stack usage is greatly 9838 reduced. This should improve performance and reduce the possibility of 9839 parse 9840 stack overflow. 9841 9842 Eliminated all reduce/reduce conflicts in the iASL parser generation. 9843 Also, 9844 with the addition of a %expected statement, the compiler generates from 9845 source with no warnings. 9846 9847 Fixed a possible segment fault in the disassembler if the input filename 9848 does not contain a "dot" extension (Thomas Renninger). 9849 9850 ---------------------------------------- 9851 21 October 2005. Summary of changes for version 20051021: 9852 9853 1) ACPI CA Core Subsystem: 9854 9855 Implemented support for the EM64T and other x86-64 processors. This 9856 essentially entails recognizing that these processors support non-aligned 9857 memory transfers. Previously, all 64-bit processors were assumed to lack 9858 hardware support for non-aligned transfers. 9859 9860 Completed conversion of the Resource Manager to nearly full table-driven 9861 operation. Specifically, the resource conversion code (convert AML to 9862 internal format and the reverse) and the debug code to dump internal 9863 resource descriptors are fully table-driven, reducing code and data size 9864 and 9865 improving maintainability. 9866 9867 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag 9868 word 9869 on 64-bit processors instead of a fixed 32-bit word. (With assistance 9870 from 9871 Alexey Starikovskiy) 9872 9873 Implemented support within the resource conversion code for the Type- 9874 Specific byte within the various ACPI 3.0 *WordSpace macros. 9875 9876 Fixed some issues within the resource conversion code for the type- 9877 specific 9878 flags for both Memory and I/O address resource descriptors. For Memory, 9879 implemented support for the MTP and TTP flags. For I/O, split the TRS and 9880 TTP flags into two separate fields. 9881 9882 Code and Data Size: The current and previous library sizes for the core 9883 subsystem are shown below. These are the code and data sizes for the 9884 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9885 These 9886 values do not include any ACPI driver or OSPM code. The debug version of 9887 the 9888 code includes the debug output trace mechanism and has a much larger code 9889 and data size. Note that these values will vary depending on the 9890 efficiency 9891 of the compiler and the compiler options used during generation. 9892 9893 Previous Release: 9894 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 9895 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 9896 Current Release: 9897 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 9898 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 9899 9900 9901 9902 2) iASL Compiler/Disassembler: 9903 9904 Relaxed a compiler restriction that disallowed a ResourceIndex byte if 9905 the 9906 corresponding ResourceSource string was not also present in a resource 9907 descriptor declaration. This restriction caused problems with existing 9908 AML/ASL code that includes the Index byte without the string. When such 9909 AML 9910 was disassembled, it could not be compiled without modification. Further, 9911 the modified code created a resource template with a different size than 9912 the 9913 original, breaking code that used fixed offsets into the resource 9914 template 9915 buffer. 9916 9917 Removed a recent feature of the disassembler to ignore a lone 9918 ResourceIndex 9919 byte. This byte is now emitted if present so that the exact AML can be 9920 reproduced when the disassembled code is recompiled. 9921 9922 Improved comments and text alignment for the resource descriptor code 9923 emitted by the disassembler. 9924 9925 Implemented disassembler support for the ACPI 3.0 AccessSize field within 9926 a 9927 Register() resource descriptor. 9928 9929 ---------------------------------------- 9930 30 September 2005. Summary of changes for version 20050930: 9931 9932 1) ACPI CA Core Subsystem: 9933 9934 Completed a major overhaul of the Resource Manager code - specifically, 9935 optimizations in the area of the AML/internal resource conversion code. 9936 The 9937 code has been optimized to simplify and eliminate duplicated code, CPU 9938 stack 9939 use has been decreased by optimizing function parameters and local 9940 variables, and naming conventions across the manager have been 9941 standardized 9942 for clarity and ease of maintenance (this includes function, parameter, 9943 variable, and struct/typedef names.) The update may force changes in some 9944 driver code, depending on how resources are handled by the host OS. 9945 9946 All Resource Manager dispatch and information tables have been moved to a 9947 single location for clarity and ease of maintenance. One new file was 9948 created, named "rsinfo.c". 9949 9950 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 9951 guarantee that the argument is not evaluated twice, making them less 9952 prone 9953 to macro side-effects. However, since there exists the possibility of 9954 additional stack use if a particular compiler cannot optimize them (such 9955 as 9956 in the debug generation case), the original macros are optionally 9957 available. 9958 Note that some invocations of the return_VALUE macro may now cause size 9959 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided 9960 to 9961 eliminate these. (From Randy Dunlap) 9962 9963 Implemented a new mechanism to enable debug tracing for individual 9964 control 9965 methods. A new external interface, AcpiDebugTrace, is provided to enable 9966 this mechanism. The intent is to allow the host OS to easily enable and 9967 disable tracing for problematic control methods. This interface can be 9968 easily exposed to a user or debugger interface if desired. See the file 9969 psxface.c for details. 9970 9971 AcpiUtCallocate will now return a valid pointer if a length of zero is 9972 specified - a length of one is used and a warning is issued. This matches 9973 the behavior of AcpiUtAllocate. 9974 9975 Code and Data Size: The current and previous library sizes for the core 9976 subsystem are shown below. These are the code and data sizes for the 9977 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9978 These 9979 values do not include any ACPI driver or OSPM code. The debug version of 9980 the 9981 code includes the debug output trace mechanism and has a much larger code 9982 and data size. Note that these values will vary depending on the 9983 efficiency 9984 of the compiler and the compiler options used during generation. 9985 9986 Previous Release: 9987 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 9988 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 9989 Current Release: 9990 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 9991 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 9992 9993 9994 2) iASL Compiler/Disassembler: 9995 9996 A remark is issued if the effective compile-time length of a package or 9997 buffer is zero. Previously, this was a warning. 9998 9999 ---------------------------------------- 10000 16 September 2005. Summary of changes for version 20050916: 10001 10002 1) ACPI CA Core Subsystem: 10003 10004 Fixed a problem within the Resource Manager where support for the Generic 10005 Register descriptor was not fully implemented. This descriptor is now 10006 fully 10007 recognized, parsed, disassembled, and displayed. 10008 10009 Completely restructured the Resource Manager code to utilize table-driven 10010 dispatch and lookup, eliminating many of the large switch() statements. 10011 This 10012 reduces overall subsystem code size and code complexity. Affects the 10013 resource parsing and construction, disassembly, and debug dump output. 10014 10015 Cleaned up and restructured the debug dump output for all resource 10016 descriptors. Improved readability of the output and reduced code size. 10017 10018 Fixed a problem where changes to internal data structures caused the 10019 optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 10020 10021 Code and Data Size: The current and previous library sizes for the core 10022 subsystem are shown below. These are the code and data sizes for the 10023 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10024 These 10025 values do not include any ACPI driver or OSPM code. The debug version of 10026 the 10027 code includes the debug output trace mechanism and has a much larger code 10028 and data size. Note that these values will vary depending on the 10029 efficiency 10030 of the compiler and the compiler options used during generation. 10031 10032 Previous Release: 10033 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 10034 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 10035 Current Release: 10036 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 10037 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 10038 10039 10040 2) iASL Compiler/Disassembler: 10041 10042 Updated the disassembler to automatically insert an EndDependentFn() 10043 macro 10044 into the ASL stream if this macro is missing in the original AML code, 10045 simplifying compilation of the resulting ASL module. 10046 10047 Fixed a problem in the disassembler where a disassembled ResourceSource 10048 string (within a large resource descriptor) was not surrounded by quotes 10049 and 10050 not followed by a comma, causing errors when the resulting ASL module was 10051 compiled. Also, escape sequences within a ResourceSource string are now 10052 handled correctly (especially "\\") 10053 10054 ---------------------------------------- 10055 02 September 2005. Summary of changes for version 20050902: 10056 10057 1) ACPI CA Core Subsystem: 10058 10059 Fixed a problem with the internal Owner ID allocation and deallocation 10060 mechanisms for control method execution and recursive method invocation. 10061 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 10062 messages seen on some systems. Recursive method invocation depth is 10063 currently limited to 255. (Alexey Starikovskiy) 10064 10065 Completely eliminated all vestiges of support for the "module-level 10066 executable code" until this support is fully implemented and debugged. 10067 This 10068 should eliminate the NO_RETURN_VALUE exceptions seen during table load on 10069 some systems that invoke this support. 10070 10071 Fixed a problem within the resource manager code where the transaction 10072 flags 10073 for a 64-bit address descriptor were handled incorrectly in the type- 10074 specific flag byte. 10075 10076 Consolidated duplicate code within the address descriptor resource 10077 manager 10078 code, reducing overall subsystem code size. 10079 10080 Fixed a fault when using the AML debugger "disassemble" command to 10081 disassemble individual control methods. 10082 10083 Removed references to the "release_current" directory within the Unix 10084 release package. 10085 10086 Code and Data Size: The current and previous core subsystem library sizes 10087 are shown below. These are the code and data sizes for the acpica.lib 10088 produced by the Microsoft Visual C++ 6.0 compiler. These values do not 10089 include any ACPI driver or OSPM code. The debug version of the code 10090 includes 10091 the debug output trace mechanism and has a much larger code and data 10092 size. 10093 Note that these values will vary depending on the efficiency of the 10094 compiler 10095 and the compiler options used during generation. 10096 10097 Previous Release: 10098 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 10099 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 10100 Current Release: 10101 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 10102 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 10103 10104 10105 2) iASL Compiler/Disassembler: 10106 10107 Implemented an error check for illegal duplicate values in the interrupt 10108 and 10109 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 10110 Interrupt(). 10111 10112 Implemented error checking for the Irq() and IrqNoFlags() macros to 10113 detect 10114 too many values in the interrupt list (16 max) and invalid values in the 10115 list (range 0 - 15) 10116 10117 The maximum length string literal within an ASL file is now restricted to 10118 200 characters as per the ACPI specification. 10119 10120 Fixed a fault when using the -ln option (generate namespace listing). 10121 10122 Implemented an error check to determine if a DescriptorName within a 10123 resource descriptor has already been used within the current scope. 10124 10125 ---------------------------------------- 10126 15 August 2005. Summary of changes for version 20050815: 10127 10128 1) ACPI CA Core Subsystem: 10129 10130 Implemented a full bytewise compare to determine if a table load request 10131 is 10132 attempting to load a duplicate table. The compare is performed if the 10133 table 10134 signatures and table lengths match. This will allow different tables with 10135 the same OEM Table ID and revision to be loaded - probably against the 10136 ACPI 10137 specification, but discovered in the field nonetheless. 10138 10139 Added the changes.txt logfile to each of the zipped release packages. 10140 10141 Code and Data Size: Current and previous core subsystem library sizes are 10142 shown below. These are the code and data sizes for the acpica.lib 10143 produced 10144 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10145 any ACPI driver or OSPM code. The debug version of the code includes the 10146 debug output trace mechanism and has a much larger code and data size. 10147 Note 10148 that these values will vary depending on the efficiency of the compiler 10149 and 10150 the compiler options used during generation. 10151 10152 Previous Release: 10153 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 10154 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 10155 Current Release: 10156 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 10157 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 10158 10159 10160 2) iASL Compiler/Disassembler: 10161 10162 Fixed a problem where incorrect AML code could be generated for Package 10163 objects if optimization is disabled (via the -oa switch). 10164 10165 Fixed a problem with where incorrect AML code is generated for variable- 10166 length packages when the package length is not specified and the number 10167 of 10168 initializer values is greater than 255. 10169 10170 10171 ---------------------------------------- 10172 29 July 2005. Summary of changes for version 20050729: 10173 10174 1) ACPI CA Core Subsystem: 10175 10176 Implemented support to ignore an attempt to install/load a particular 10177 ACPI 10178 table more than once. Apparently there exists BIOS code that repeatedly 10179 attempts to load the same SSDT upon certain events. With assistance from 10180 Venkatesh Pallipadi. 10181 10182 Restructured the main interface to the AML parser in order to correctly 10183 handle all exceptional conditions. This will prevent leakage of the 10184 OwnerId 10185 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on 10186 some 10187 machines. With assistance from Alexey Starikovskiy. 10188 10189 Support for "module level code" has been disabled in this version due to 10190 a 10191 number of issues that have appeared on various machines. The support can 10192 be 10193 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 10194 compilation. When the issues are fully resolved, the code will be enabled 10195 by 10196 default again. 10197 10198 Modified the internal functions for debug print support to define the 10199 FunctionName parameter as a (const char *) for compatibility with 10200 compiler 10201 built-in macros such as __FUNCTION__, etc. 10202 10203 Linted the entire ACPICA source tree for both 32-bit and 64-bit. 10204 10205 Implemented support to display an object count summary for the AML 10206 Debugger 10207 commands Object and Methods. 10208 10209 Code and Data Size: Current and previous core subsystem library sizes are 10210 shown below. These are the code and data sizes for the acpica.lib 10211 produced 10212 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10213 any ACPI driver or OSPM code. The debug version of the code includes the 10214 debug output trace mechanism and has a much larger code and data size. 10215 Note 10216 that these values will vary depending on the efficiency of the compiler 10217 and 10218 the compiler options used during generation. 10219 10220 Previous Release: 10221 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 10222 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 10223 Current Release: 10224 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 10225 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 10226 10227 10228 2) iASL Compiler/Disassembler: 10229 10230 Fixed a regression that appeared in the 20050708 version of the compiler 10231 where an error message was inadvertently emitted for invocations of the 10232 _OSI 10233 reserved control method. 10234 10235 ---------------------------------------- 10236 08 July 2005. Summary of changes for version 20050708: 10237 10238 1) ACPI CA Core Subsystem: 10239 10240 The use of the CPU stack in the debug version of the subsystem has been 10241 considerably reduced. Previously, a debug structure was declared in every 10242 function that used the debug macros. This structure has been removed in 10243 favor of declaring the individual elements as parameters to the debug 10244 functions. This reduces the cumulative stack use during nested execution 10245 of 10246 ACPI function calls at the cost of a small increase in the code size of 10247 the 10248 debug version of the subsystem. With assistance from Alexey Starikovskiy 10249 and 10250 Len Brown. 10251 10252 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 10253 headers to define a macro that will return the current function name at 10254 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used 10255 by 10256 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 10257 compiler-dependent header, the function name is saved on the CPU stack 10258 (one 10259 pointer per function.) This mechanism is used because apparently there 10260 exists no standard ANSI-C defined macro that that returns the function 10261 name. 10262 10263 Redesigned and reimplemented the "Owner ID" mechanism used to track 10264 namespace objects created/deleted by ACPI tables and control method 10265 execution. A bitmap is now used to allocate and free the IDs, thus 10266 solving 10267 the wraparound problem present in the previous implementation. The size 10268 of 10269 the namespace node descriptor was reduced by 2 bytes as a result (Alexey 10270 Starikovskiy). 10271 10272 Removed the UINT32_BIT and UINT16_BIT types that were used for the 10273 bitfield 10274 flag definitions within the headers for the predefined ACPI tables. These 10275 have been replaced by UINT8_BIT in order to increase the code portability 10276 of 10277 the subsystem. If the use of UINT8 remains a problem, we may be forced to 10278 eliminate bitfields entirely because of a lack of portability. 10279 10280 Enhanced the performance of the AcpiUtUpdateObjectReference procedure. 10281 This 10282 is a frequently used function and this improvement increases the 10283 performance 10284 of the entire subsystem (Alexey Starikovskiy). 10285 10286 Fixed several possible memory leaks and the inverse - premature object 10287 deletion (Alexey Starikovskiy). 10288 10289 Code and Data Size: Current and previous core subsystem library sizes are 10290 shown below. These are the code and data sizes for the acpica.lib 10291 produced 10292 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10293 any ACPI driver or OSPM code. The debug version of the code includes the 10294 debug output trace mechanism and has a much larger code and data size. 10295 Note 10296 that these values will vary depending on the efficiency of the compiler 10297 and 10298 the compiler options used during generation. 10299 10300 Previous Release: 10301 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 10302 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 10303 Current Release: 10304 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 10305 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 10306 10307 ---------------------------------------- 10308 24 June 2005. Summary of changes for version 20050624: 10309 10310 1) ACPI CA Core Subsystem: 10311 10312 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 10313 the host-defined cache object. This allows the OSL implementation to 10314 define 10315 and type this object in any manner desired, simplifying the OSL 10316 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 10317 Linux, and should be defined in the OS-specific header file for other 10318 operating systems as required. 10319 10320 Changed the interface to AcpiOsAcquireObject to directly return the 10321 requested object as the function return (instead of ACPI_STATUS.) This 10322 change was made for performance reasons, since this is the purpose of the 10323 interface in the first place. AcpiOsAcquireObject is now similar to the 10324 AcpiOsAllocate interface. 10325 10326 Implemented a new AML debugger command named Businfo. This command 10327 displays 10328 information about all devices that have an associate _PRT object. The 10329 _ADR, 10330 _HID, _UID, and _CID are displayed for these devices. 10331 10332 Modified the initialization sequence in AcpiInitializeSubsystem to call 10333 the 10334 OSL interface AcpiOslInitialize first, before any local initialization. 10335 This 10336 change was required because the global initialization now calls OSL 10337 interfaces. 10338 10339 Enhanced the Dump command to display the entire contents of Package 10340 objects 10341 (including all sub-objects and their values.) 10342 10343 Restructured the code base to split some files because of size and/or 10344 because the code logically belonged in a separate file. New files are 10345 listed 10346 below. All makefiles and project files included in the ACPI CA release 10347 have 10348 been updated. 10349 utilities/utcache.c /* Local cache interfaces */ 10350 utilities/utmutex.c /* Local mutex support */ 10351 utilities/utstate.c /* State object support */ 10352 interpreter/parser/psloop.c /* Main AML parse loop */ 10353 10354 Code and Data Size: Current and previous core subsystem library sizes are 10355 shown below. These are the code and data sizes for the acpica.lib 10356 produced 10357 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10358 any ACPI driver or OSPM code. The debug version of the code includes the 10359 debug output trace mechanism and has a much larger code and data size. 10360 Note 10361 that these values will vary depending on the efficiency of the compiler 10362 and 10363 the compiler options used during generation. 10364 10365 Previous Release: 10366 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 10367 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 10368 Current Release: 10369 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 10370 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 10371 10372 10373 2) iASL Compiler/Disassembler: 10374 10375 Fixed a regression introduced in version 20050513 where the use of a 10376 Package 10377 object within a Case() statement caused a compile time exception. The 10378 original behavior has been restored (a Match() operator is emitted.) 10379 10380 ---------------------------------------- 10381 17 June 2005. Summary of changes for version 20050617: 10382 10383 1) ACPI CA Core Subsystem: 10384 10385 Moved the object cache operations into the OS interface layer (OSL) to 10386 allow 10387 the host OS to handle these operations if desired (for example, the Linux 10388 OSL will invoke the slab allocator). This support is optional; the 10389 compile 10390 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original 10391 cache 10392 code in the ACPI CA core. The new OSL interfaces are shown below. See 10393 utalloc.c for an example implementation, and acpiosxf.h for the exact 10394 interface definitions. With assistance from Alexey Starikovskiy. 10395 AcpiOsCreateCache 10396 AcpiOsDeleteCache 10397 AcpiOsPurgeCache 10398 AcpiOsAcquireObject 10399 AcpiOsReleaseObject 10400 10401 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to 10402 return 10403 and restore a flags parameter. This fits better with many OS lock models. 10404 Note: the current execution state (interrupt handler or not) is no longer 10405 passed to these interfaces. If necessary, the OSL must determine this 10406 state 10407 by itself, a simple and fast operation. With assistance from Alexey 10408 Starikovskiy. 10409 10410 Fixed a problem in the ACPI table handling where a valid XSDT was assumed 10411 present if the revision of the RSDP was 2 or greater. According to the 10412 ACPI 10413 specification, the XSDT is optional in all cases, and the table manager 10414 therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 10415 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs 10416 contain 10417 only the RSDT. 10418 10419 Fixed an interpreter problem with the Mid() operator in the case of an 10420 input 10421 string where the resulting output string is of zero length. It now 10422 correctly 10423 returns a valid, null terminated string object instead of a string object 10424 with a null pointer. 10425 10426 Fixed a problem with the control method argument handling to allow a 10427 store 10428 to an Arg object that already contains an object of type Device. The 10429 Device 10430 object is now correctly overwritten. Previously, an error was returned. 10431 10432 10433 Enhanced the debugger Find command to emit object values in addition to 10434 the 10435 found object pathnames. The output format is the same as the dump 10436 namespace 10437 command. 10438 10439 Enhanced the debugger Set command. It now has the ability to set the 10440 value 10441 of any Named integer object in the namespace (Previously, only method 10442 locals 10443 and args could be set.) 10444 10445 Code and Data Size: Current and previous core subsystem library sizes are 10446 shown below. These are the code and data sizes for the acpica.lib 10447 produced 10448 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10449 any ACPI driver or OSPM code. The debug version of the code includes the 10450 debug output trace mechanism and has a much larger code and data size. 10451 Note 10452 that these values will vary depending on the efficiency of the compiler 10453 and 10454 the compiler options used during generation. 10455 10456 Previous Release: 10457 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 10458 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 10459 Current Release: 10460 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 10461 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 10462 10463 10464 2) iASL Compiler/Disassembler: 10465 10466 Fixed a regression in the disassembler where if/else/while constructs 10467 were 10468 output incorrectly. This problem was introduced in the previous release 10469 (20050526). This problem also affected the single-step disassembly in the 10470 debugger. 10471 10472 Fixed a problem where compiling the reserved _OSI method would randomly 10473 (but 10474 rarely) produce compile errors. 10475 10476 Enhanced the disassembler to emit compilable code in the face of 10477 incorrect 10478 AML resource descriptors. If the optional ResourceSourceIndex is present, 10479 but the ResourceSource is not, do not emit the ResourceSourceIndex in the 10480 disassembly. Otherwise, the resulting code cannot be compiled without 10481 errors. 10482 10483 ---------------------------------------- 10484 26 May 2005. Summary of changes for version 20050526: 10485 10486 1) ACPI CA Core Subsystem: 10487 10488 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 10489 the module level (not within a control method.) These opcodes are 10490 executed 10491 exactly once at the time the table is loaded. This type of code was legal 10492 up 10493 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA 10494 in 10495 order to provide backwards compatibility with earlier BIOS 10496 implementations. 10497 This eliminates the "Encountered executable code at module level" warning 10498 that was previously generated upon detection of such code. 10499 10500 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 10501 inadvertently be generated during the lookup of namespace objects in the 10502 second pass parse of ACPI tables and control methods. It appears that 10503 this 10504 problem could occur during the resolution of forward references to 10505 namespace 10506 objects. 10507 10508 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 10509 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 10510 allows the deadlock detection debug code to be compiled out in the normal 10511 case, improving mutex performance (and overall subsystem performance) 10512 considerably. 10513 10514 Implemented a handful of miscellaneous fixes for possible memory leaks on 10515 error conditions and error handling control paths. These fixes were 10516 suggested by FreeBSD and the Coverity Prevent source code analysis tool. 10517 10518 Added a check for a null RSDT pointer in AcpiGetFirmwareTable 10519 (tbxfroot.c) 10520 to prevent a fault in this error case. 10521 10522 Code and Data Size: Current and previous core subsystem library sizes are 10523 shown below. These are the code and data sizes for the acpica.lib 10524 produced 10525 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10526 any ACPI driver or OSPM code. The debug version of the code includes the 10527 debug output trace mechanism and has a much larger code and data size. 10528 Note 10529 that these values will vary depending on the efficiency of the compiler 10530 and 10531 the compiler options used during generation. 10532 10533 Previous Release: 10534 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 10535 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 10536 Current Release: 10537 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 10538 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 10539 10540 10541 2) iASL Compiler/Disassembler: 10542 10543 Implemented support to allow Type 1 and Type 2 ASL operators to appear at 10544 the module level (not within a control method.) These operators will be 10545 executed once at the time the table is loaded. This type of code was 10546 legal 10547 up until the release of ACPI 2.0B (2002) and is now supported by the iASL 10548 compiler in order to provide backwards compatibility with earlier BIOS 10549 ASL 10550 code. 10551 10552 The ACPI integer width (specified via the table revision ID or the -r 10553 override, 32 or 64 bits) is now used internally during compile-time 10554 constant 10555 folding to ensure that constants are truncated to 32 bits if necessary. 10556 Previously, the revision ID value was only emitted in the AML table 10557 header. 10558 10559 An error message is now generated for the Mutex and Method operators if 10560 the 10561 SyncLevel parameter is outside the legal range of 0 through 15. 10562 10563 Fixed a problem with the Method operator ParameterTypes list handling 10564 (ACPI 10565 3.0). Previously, more than 2 types or 2 arguments generated a syntax 10566 error. 10567 The actual underlying implementation of method argument typechecking is 10568 still under development, however. 10569 10570 ---------------------------------------- 10571 13 May 2005. Summary of changes for version 20050513: 10572 10573 1) ACPI CA Core Subsystem: 10574 10575 Implemented support for PCI Express root bridges -- added support for 10576 device 10577 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 10578 10579 The interpreter now automatically truncates incoming 64-bit constants to 10580 32 10581 bits if currently executing out of a 32-bit ACPI table (Revision < 2). 10582 This 10583 also affects the iASL compiler constant folding. (Note: as per below, the 10584 iASL compiler no longer allows 64-bit constants within 32-bit tables.) 10585 10586 Fixed a problem where string and buffer objects with "static" pointers 10587 (pointers to initialization data within an ACPI table) were not handled 10588 consistently. The internal object copy operation now always copies the 10589 data 10590 to a newly allocated buffer, regardless of whether the source object is 10591 static or not. 10592 10593 Fixed a problem with the FromBCD operator where an implicit result 10594 conversion was improperly performed while storing the result to the 10595 target 10596 operand. Since this is an "explicit conversion" operator, the implicit 10597 conversion should never be performed on the output. 10598 10599 Fixed a problem with the CopyObject operator where a copy to an existing 10600 named object did not always completely overwrite the existing object 10601 stored 10602 at name. Specifically, a buffer-to-buffer copy did not delete the 10603 existing 10604 buffer. 10605 10606 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces 10607 and 10608 structs for consistency. 10609 10610 Code and Data Size: Current and previous core subsystem library sizes are 10611 shown below. These are the code and data sizes for the acpica.lib 10612 produced 10613 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10614 any ACPI driver or OSPM code. The debug version of the code includes the 10615 debug output trace mechanism and has a much larger code and data size. 10616 Note 10617 that these values will vary depending on the efficiency of the compiler 10618 and 10619 the compiler options used during generation. 10620 10621 Previous Release: 10622 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 10623 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 10624 Current Release: (Same sizes) 10625 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 10626 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 10627 10628 10629 2) iASL Compiler/Disassembler: 10630 10631 The compiler now emits a warning if an attempt is made to generate a 64- 10632 bit 10633 integer constant from within a 32-bit ACPI table (Revision < 2). The 10634 integer 10635 is truncated to 32 bits. 10636 10637 Fixed a problem with large package objects: if the static length of the 10638 package is greater than 255, the "variable length package" opcode is 10639 emitted. Previously, this caused an error. This requires an update to the 10640 ACPI spec, since it currently (incorrectly) states that packages larger 10641 than 10642 255 elements are not allowed. 10643 10644 The disassembler now correctly handles variable length packages and 10645 packages 10646 larger than 255 elements. 10647 10648 ---------------------------------------- 10649 08 April 2005. Summary of changes for version 20050408: 10650 10651 1) ACPI CA Core Subsystem: 10652 10653 Fixed three cases in the interpreter where an "index" argument to an ASL 10654 function was still (internally) 32 bits instead of the required 64 bits. 10655 This was the Index argument to the Index, Mid, and Match operators. 10656 10657 The "strupr" function is now permanently local (AcpiUtStrupr), since this 10658 is 10659 not a POSIX-defined function and not present in most kernel-level C 10660 libraries. All references to the C library strupr function have been 10661 removed 10662 from the headers. 10663 10664 Completed the deployment of static functions/prototypes. All prototypes 10665 with 10666 the static attribute have been moved from the headers to the owning C 10667 file. 10668 10669 Implemented an extract option (-e) for the AcpiBin utility (AML binary 10670 utility). This option allows the utility to extract individual ACPI 10671 tables 10672 from the output of AcpiDmp. It provides the same functionality of the 10673 acpixtract.pl perl script without the worry of setting the correct perl 10674 options. AcpiBin runs on Windows and has not yet been generated/validated 10675 in 10676 the Linux/Unix environment (but should be soon). 10677 10678 Updated and fixed the table dump option for AcpiBin (-d). This option 10679 converts a single ACPI table to a hex/ascii file, similar to the output 10680 of 10681 AcpiDmp. 10682 10683 Code and Data Size: Current and previous core subsystem library sizes are 10684 shown below. These are the code and data sizes for the acpica.lib 10685 produced 10686 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10687 any ACPI driver or OSPM code. The debug version of the code includes the 10688 debug output trace mechanism and has a much larger code and data size. 10689 Note 10690 that these values will vary depending on the efficiency of the compiler 10691 and 10692 the compiler options used during generation. 10693 10694 Previous Release: 10695 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 10696 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 10697 Current Release: 10698 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 10699 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 10700 10701 10702 2) iASL Compiler/Disassembler: 10703 10704 Disassembler fix: Added a check to ensure that the table length found in 10705 the 10706 ACPI table header within the input file is not longer than the actual 10707 input 10708 file size. This indicates some kind of file or table corruption. 10709 10710 ---------------------------------------- 10711 29 March 2005. Summary of changes for version 20050329: 10712 10713 1) ACPI CA Core Subsystem: 10714 10715 An error is now generated if an attempt is made to create a Buffer Field 10716 of 10717 length zero (A CreateField with a length operand of zero.) 10718 10719 The interpreter now issues a warning whenever executable code at the 10720 module 10721 level is detected during ACPI table load. This will give some idea of the 10722 prevalence of this type of code. 10723 10724 Implemented support for references to named objects (other than control 10725 methods) within package objects. 10726 10727 Enhanced package object output for the debug object. Package objects are 10728 now 10729 completely dumped, showing all elements. 10730 10731 Enhanced miscellaneous object output for the debug object. Any object can 10732 now be written to the debug object (for example, a device object can be 10733 written, and the type of the object will be displayed.) 10734 10735 The "static" qualifier has been added to all local functions across both 10736 the 10737 core subsystem and the iASL compiler. 10738 10739 The number of "long" lines (> 80 chars) within the source has been 10740 significantly reduced, by about 1/3. 10741 10742 Cleaned up all header files to ensure that all CA/iASL functions are 10743 prototyped (even static functions) and the formatting is consistent. 10744 10745 Two new header files have been added, acopcode.h and acnames.h. 10746 10747 Removed several obsolete functions that were no longer used. 10748 10749 Code and Data Size: Current and previous core subsystem library sizes are 10750 shown below. These are the code and data sizes for the acpica.lib 10751 produced 10752 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10753 any ACPI driver or OSPM code. The debug version of the code includes the 10754 debug output trace mechanism and has a much larger code and data size. 10755 Note 10756 that these values will vary depending on the efficiency of the compiler 10757 and 10758 the compiler options used during generation. 10759 10760 Previous Release: 10761 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10762 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 10763 Current Release: 10764 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 10765 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 10766 10767 10768 10769 2) iASL Compiler/Disassembler: 10770 10771 Fixed a problem with the resource descriptor generation/support. For the 10772 ResourceSourceIndex and the ResourceSource fields, both must be present, 10773 or 10774 both must be not present - can't have one without the other. 10775 10776 The compiler now returns non-zero from the main procedure if any errors 10777 have 10778 occurred during the compilation. 10779 10780 10781 ---------------------------------------- 10782 09 March 2005. Summary of changes for version 20050309: 10783 10784 1) ACPI CA Core Subsystem: 10785 10786 The string-to-buffer implicit conversion code has been modified again 10787 after 10788 a change to the ACPI specification. In order to match the behavior of 10789 the 10790 other major ACPI implementation, the target buffer is no longer truncated 10791 if 10792 the source string is smaller than an existing target buffer. This change 10793 requires an update to the ACPI spec, and should eliminate the recent 10794 AE_AML_BUFFER_LIMIT issues. 10795 10796 The "implicit return" support was rewritten to a new algorithm that 10797 solves 10798 the general case. Rather than attempt to determine when a method is about 10799 to 10800 exit, the result of every ASL operator is saved momentarily until the 10801 very 10802 next ASL operator is executed. Therefore, no matter how the method exits, 10803 there will always be a saved implicit return value. This feature is only 10804 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should 10805 eliminate 10806 AE_AML_NO_RETURN_VALUE errors when enabled. 10807 10808 Implemented implicit conversion support for the predicate (operand) of 10809 the 10810 If, Else, and While operators. String and Buffer arguments are 10811 automatically 10812 converted to Integers. 10813 10814 Changed the string-to-integer conversion behavior to match the new ACPI 10815 errata: "If no integer object exists, a new integer is created. The ASCII 10816 string is interpreted as a hexadecimal constant. Each string character is 10817 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 10818 with the first character as the most significant digit, and ending with 10819 the 10820 first non-hexadecimal character or end-of-string." This means that the 10821 first 10822 non-hex character terminates the conversion and this is the code that was 10823 changed. 10824 10825 Fixed a problem where the ObjectType operator would fail (fault) when 10826 used 10827 on an Index of a Package which pointed to a null package element. The 10828 operator now properly returns zero (Uninitialized) in this case. 10829 10830 Fixed a problem where the While operator used excessive memory by not 10831 properly popping the result stack during execution. There was no memory 10832 leak 10833 after execution, however. (Code provided by Valery Podrezov.) 10834 10835 Fixed a problem where references to control methods within Package 10836 objects 10837 caused the method to be invoked, instead of producing a reference object 10838 pointing to the method. 10839 10840 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) 10841 to 10842 improve performance and reduce code size. (Code provided by Alexey 10843 Starikovskiy.) 10844 10845 Code and Data Size: Current and previous core subsystem library sizes are 10846 shown below. These are the code and data sizes for the acpica.lib 10847 produced 10848 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10849 any ACPI driver or OSPM code. The debug version of the code includes the 10850 debug output trace mechanism and has a much larger code and data size. 10851 Note 10852 that these values will vary depending on the efficiency of the compiler 10853 and 10854 the compiler options used during generation. 10855 10856 Previous Release: 10857 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10858 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 10859 Current Release: 10860 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10861 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 10862 10863 10864 2) iASL Compiler/Disassembler: 10865 10866 Fixed a problem with the Return operator with no arguments. Since the AML 10867 grammar for the byte encoding requires an operand for the Return opcode, 10868 the 10869 compiler now emits a Return(Zero) for this case. An ACPI specification 10870 update has been written for this case. 10871 10872 For tables other than the DSDT, namepath optimization is automatically 10873 disabled. This is because SSDTs can be loaded anywhere in the namespace, 10874 the 10875 compiler has no knowledge of where, and thus cannot optimize namepaths. 10876 10877 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 10878 inadvertently omitted from the ACPI specification, and will require an 10879 update to the spec. 10880 10881 The source file scan for ASCII characters is now optional (-a). This 10882 change 10883 was made because some vendors place non-ascii characters within comments. 10884 However, the scan is simply a brute-force byte compare to ensure all 10885 characters in the file are in the range 0x00 to 0x7F. 10886 10887 Fixed a problem with the CondRefOf operator where the compiler was 10888 inappropriately checking for the existence of the target. Since the point 10889 of 10890 the operator is to check for the existence of the target at run-time, the 10891 compiler no longer checks for the target existence. 10892 10893 Fixed a problem where errors generated from the internal AML interpreter 10894 during constant folding were not handled properly, causing a fault. 10895 10896 Fixed a problem with overly aggressive range checking for the Stall 10897 operator. The valid range (max 255) is now only checked if the operand is 10898 of 10899 type Integer. All other operand types cannot be statically checked. 10900 10901 Fixed a problem where control method references within the RefOf, 10902 DeRefOf, 10903 and ObjectType operators were not treated properly. They are now treated 10904 as 10905 actual references, not method invocations. 10906 10907 Fixed and enhanced the "list namespace" option (-ln). This option was 10908 broken 10909 a number of releases ago. 10910 10911 Improved error handling for the Field, IndexField, and BankField 10912 operators. 10913 The compiler now cleanly reports and recovers from errors in the field 10914 component (FieldUnit) list. 10915 10916 Fixed a disassembler problem where the optional ResourceDescriptor fields 10917 TRS and TTP were not always handled correctly. 10918 10919 Disassembler - Comments in output now use "//" instead of "/*" 10920 10921 ---------------------------------------- 10922 28 February 2005. Summary of changes for version 20050228: 10923 10924 1) ACPI CA Core Subsystem: 10925 10926 Fixed a problem where the result of an Index() operator (an object 10927 reference) must increment the reference count on the target object for 10928 the 10929 life of the object reference. 10930 10931 Implemented AML Interpreter and Debugger support for the new ACPI 3.0 10932 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and 10933 WordSpace 10934 resource descriptors. 10935 10936 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 10937 Space Descriptor" string, indicating interpreter support for the 10938 descriptors 10939 above. 10940 10941 Implemented header support for the new ACPI 3.0 FADT flag bits. 10942 10943 Implemented header support for the new ACPI 3.0 PCI Express bits for the 10944 PM1 10945 status/enable registers. 10946 10947 Updated header support for the MADT processor local Apic struct and MADT 10948 platform interrupt source struct for new ACPI 3.0 fields. 10949 10950 Implemented header support for the SRAT and SLIT ACPI tables. 10951 10952 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" 10953 flag 10954 at runtime. 10955 10956 Code and Data Size: Current and previous core subsystem library sizes are 10957 shown below. These are the code and data sizes for the acpica.lib 10958 produced 10959 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10960 any ACPI driver or OSPM code. The debug version of the code includes the 10961 debug output trace mechanism and has a much larger code and data size. 10962 Note 10963 that these values will vary depending on the efficiency of the compiler 10964 and 10965 the compiler options used during generation. 10966 10967 Previous Release: 10968 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 10969 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 10970 Current Release: 10971 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10972 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 10973 10974 10975 2) iASL Compiler/Disassembler: 10976 10977 Fixed a problem with the internal 64-bit String-to-integer conversion 10978 with 10979 strings less than two characters long. 10980 10981 Fixed a problem with constant folding where the result of the Index() 10982 operator can not be considered a constant. This means that Index() cannot 10983 be 10984 a type3 opcode and this will require an update to the ACPI specification. 10985 10986 Disassembler: Implemented support for the TTP, MTP, and TRS resource 10987 descriptor fields. These fields were inadvertently ignored and not output 10988 in 10989 the disassembly of the resource descriptor. 10990 10991 10992 ---------------------------------------- 10993 11 February 2005. Summary of changes for version 20050211: 10994 10995 1) ACPI CA Core Subsystem: 10996 10997 Implemented ACPI 3.0 support for implicit conversion within the Match() 10998 operator. MatchObjects can now be of type integer, buffer, or string 10999 instead 11000 of just type integer. Package elements are implicitly converted to the 11001 type 11002 of the MatchObject. This change aligns the behavior of Match() with the 11003 behavior of the other logical operators (LLess(), etc.) It also requires 11004 an 11005 errata change to the ACPI specification as this support was intended for 11006 ACPI 3.0, but was inadvertently omitted. 11007 11008 Fixed a problem with the internal implicit "to buffer" conversion. 11009 Strings 11010 that are converted to buffers will cause buffer truncation if the string 11011 is 11012 smaller than the target buffer. Integers that are converted to buffers 11013 will 11014 not cause buffer truncation, only zero extension (both as per the ACPI 11015 spec.) The problem was introduced when code was added to truncate the 11016 buffer, but this should not be performed in all cases, only the string 11017 case. 11018 11019 Fixed a problem with the Buffer and Package operators where the 11020 interpreter 11021 would get confused if two such operators were used as operands to an ASL 11022 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 11023 stack was not being popped after the execution of these operators, 11024 resulting 11025 in an AE_NO_RETURN_VALUE exception. 11026 11027 Fixed a problem with constructs of the form Store(Index(...),...). The 11028 reference object returned from Index was inadvertently resolved to an 11029 actual 11030 value. This problem was introduced in version 20050114 when the behavior 11031 of 11032 Store() was modified to restrict the object types that can be used as the 11033 source operand (to match the ACPI specification.) 11034 11035 Reduced excessive stack use within the AcpiGetObjectInfo procedure. 11036 11037 Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 11038 11039 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 11040 11041 Code and Data Size: Current and previous core subsystem library sizes are 11042 shown below. These are the code and data sizes for the acpica.lib 11043 produced 11044 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11045 any ACPI driver or OSPM code. The debug version of the code includes the 11046 debug output trace mechanism and has a much larger code and data size. 11047 Note 11048 that these values will vary depending on the efficiency of the compiler 11049 and 11050 the compiler options used during generation. 11051 11052 Previous Release: 11053 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 11054 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 11055 Current Release: 11056 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 11057 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 11058 11059 11060 2) iASL Compiler/Disassembler: 11061 11062 Fixed a code generation problem in the constant folding optimization code 11063 where incorrect code was generated if a constant was reduced to a buffer 11064 object (i.e., a reduced type 5 opcode.) 11065 11066 Fixed a typechecking problem for the ToBuffer operator. Caused by an 11067 incorrect return type in the internal opcode information table. 11068 11069 ---------------------------------------- 11070 25 January 2005. Summary of changes for version 20050125: 11071 11072 1) ACPI CA Core Subsystem: 11073 11074 Fixed a recently introduced problem with the Global Lock where the 11075 underlying semaphore was not created. This problem was introduced in 11076 version 20050114, and caused an AE_AML_NO_OPERAND exception during an 11077 Acquire() operation on _GL. 11078 11079 The local object cache is now optional, and is disabled by default. Both 11080 AcpiExec and the iASL compiler enable the cache because they run in user 11081 mode and this enhances their performance. #define 11082 ACPI_ENABLE_OBJECT_CACHE 11083 to enable the local cache. 11084 11085 Fixed an issue in the internal function AcpiUtEvaluateObject concerning 11086 the 11087 optional "implicit return" support where an error was returned if no 11088 return 11089 object was expected, but one was implicitly returned. AE_OK is now 11090 returned 11091 in this case and the implicitly returned object is deleted. 11092 AcpiUtEvaluateObject is only occasionally used, and only to execute 11093 reserved 11094 methods such as _STA and _INI where the return type is known up front. 11095 11096 Fixed a few issues with the internal convert-to-integer code. It now 11097 returns 11098 an error if an attempt is made to convert a null string, a string of only 11099 blanks/tabs, or a zero-length buffer. This affects both implicit 11100 conversion 11101 and explicit conversion via the ToInteger() operator. 11102 11103 The internal debug code in AcpiUtAcquireMutex has been commented out. It 11104 is 11105 not needed for normal operation and should increase the performance of 11106 the 11107 entire subsystem. The code remains in case it is needed for debug 11108 purposes 11109 again. 11110 11111 The AcpiExec source and makefile are included in the Unix/Linux package 11112 for 11113 the first time. 11114 11115 Code and Data Size: Current and previous core subsystem library sizes are 11116 shown below. These are the code and data sizes for the acpica.lib 11117 produced 11118 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11119 any ACPI driver or OSPM code. The debug version of the code includes the 11120 debug output trace mechanism and has a much larger code and data size. 11121 Note 11122 that these values will vary depending on the efficiency of the compiler 11123 and 11124 the compiler options used during generation. 11125 11126 Previous Release: 11127 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 11128 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 11129 Current Release: 11130 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 11131 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 11132 11133 2) iASL Compiler/Disassembler: 11134 11135 Switch/Case support: A warning is now issued if the type of the Switch 11136 value 11137 cannot be determined at compile time. For example, Switch(Arg0) will 11138 generate the warning, and the type is assumed to be an integer. As per 11139 the 11140 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate 11141 the 11142 warning. 11143 11144 Switch/Case support: Implemented support for buffer and string objects as 11145 the switch value. This is an ACPI 3.0 feature, now that LEqual supports 11146 buffers and strings. 11147 11148 Switch/Case support: The emitted code for the LEqual() comparisons now 11149 uses 11150 the switch value as the first operand, not the second. The case value is 11151 now 11152 the second operand, and this allows the case value to be implicitly 11153 converted to the type of the switch value, not the other way around. 11154 11155 Switch/Case support: Temporary variables are now emitted immediately 11156 within 11157 the control method, not at the global level. This means that there are 11158 now 11159 36 temps available per-method, not 36 temps per-module as was the case 11160 with 11161 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 11162 11163 ---------------------------------------- 11164 14 January 2005. Summary of changes for version 20050114: 11165 11166 Added 2005 copyright to all module headers. This affects every module in 11167 the core subsystem, iASL compiler, and the utilities. 11168 11169 1) ACPI CA Core Subsystem: 11170 11171 Fixed an issue with the String-to-Buffer conversion code where the string 11172 null terminator was not included in the buffer after conversion, but 11173 there 11174 is existing ASL that assumes the string null terminator is included. This 11175 is 11176 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 11177 introduced in the previous version when the code was updated to correctly 11178 set the converted buffer size as per the ACPI specification. The ACPI 11179 spec 11180 is ambiguous and will be updated to specify that the null terminator must 11181 be 11182 included in the converted buffer. This also affects the ToBuffer() ASL 11183 operator. 11184 11185 Fixed a problem with the Mid() ASL/AML operator where it did not work 11186 correctly on Buffer objects. Newly created sub-buffers were not being 11187 marked 11188 as initialized. 11189 11190 11191 Fixed a problem in AcpiTbFindTable where incorrect string compares were 11192 performed on the OemId and OemTableId table header fields. These fields 11193 are 11194 not null terminated, so strncmp is now used instead of strcmp. 11195 11196 Implemented a restriction on the Store() ASL/AML operator to align the 11197 behavior with the ACPI specification. Previously, any object could be 11198 used 11199 as the source operand. Now, the only objects that may be used are 11200 Integers, 11201 Buffers, Strings, Packages, Object References, and DDB Handles. If 11202 necessary, the original behavior can be restored by enabling the 11203 EnableInterpreterSlack flag. 11204 11205 Enhanced the optional "implicit return" support to allow an implicit 11206 return 11207 value from methods that are invoked externally via the AcpiEvaluateObject 11208 interface. This enables implicit returns from the _STA and _INI methods, 11209 for example. 11210 11211 Changed the Revision() ASL/AML operator to return the current version of 11212 the 11213 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly 11214 returned 11215 the supported ACPI version (This is the function of the _REV method). 11216 11217 Updated the _REV predefined method to return the currently supported 11218 version 11219 of ACPI, now 3. 11220 11221 Implemented batch mode option for the AcpiExec utility (-b). 11222 11223 Code and Data Size: Current and previous core subsystem library sizes are 11224 shown below. These are the code and data sizes for the acpica.lib 11225 produced 11226 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11227 any ACPI driver or OSPM code. The debug version of the code includes the 11228 debug output trace mechanism and has a much larger code and data size. 11229 Note 11230 that these values will vary depending on the efficiency of the compiler 11231 and 11232 the compiler options used during generation. 11233 11234 Previous Release: 11235 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11236 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 11237 Current Release: 11238 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 11239 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 11240 11241 ---------------------------------------- 11242 10 December 2004. Summary of changes for version 20041210: 11243 11244 ACPI 3.0 support is nearing completion in both the iASL compiler and the 11245 ACPI CA core subsystem. 11246 11247 1) ACPI CA Core Subsystem: 11248 11249 Fixed a problem in the ToDecimalString operator where the resulting 11250 string 11251 length was incorrectly calculated. The length is now calculated exactly, 11252 eliminating incorrect AE_STRING_LIMIT exceptions. 11253 11254 Fixed a problem in the ToHexString operator to allow a maximum 200 11255 character 11256 string to be produced. 11257 11258 Fixed a problem in the internal string-to-buffer and buffer-to-buffer 11259 copy 11260 routine where the length of the resulting buffer was not truncated to the 11261 new size (if the target buffer already existed). 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: 78.3K Code, 11.5K Data, 89.8K Total 11276 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 11277 Current Release: 11278 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11279 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 11280 11281 11282 2) iASL Compiler/Disassembler: 11283 11284 Implemented the new ACPI 3.0 resource template macros - DWordSpace, 11285 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 11286 Includes support in the disassembler. 11287 11288 Implemented support for the new (ACPI 3.0) parameter to the Register 11289 macro, 11290 AccessSize. 11291 11292 Fixed a problem where the _HE resource name for the Interrupt macro was 11293 referencing bit 0 instead of bit 1. 11294 11295 Implemented check for maximum 255 interrupts in the Interrupt macro. 11296 11297 Fixed a problem with the predefined resource descriptor names where 11298 incorrect AML code was generated if the offset within the resource buffer 11299 was 0 or 1. The optimizer shortened the AML code to a single byte opcode 11300 but did not update the surrounding package lengths. 11301 11302 Changes to the Dma macro: All channels within the channel list must be 11303 in 11304 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 11305 optional (default is BusMaster). 11306 11307 Implemented check for maximum 7 data bytes for the VendorShort macro. 11308 11309 The ReadWrite parameter is now optional for the Memory32 and similar 11310 macros. 11311 11312 ---------------------------------------- 11313 03 December 2004. Summary of changes for version 20041203: 11314 11315 1) ACPI CA Core Subsystem: 11316 11317 The low-level field insertion/extraction code (exfldio) has been 11318 completely 11319 rewritten to eliminate unnecessary complexity, bugs, and boundary 11320 conditions. 11321 11322 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and 11323 ToDecimalString 11324 operators where the input operand could be inadvertently deleted if no 11325 conversion was necessary (e.g., if the input to ToInteger was an Integer 11326 object.) 11327 11328 Fixed a problem with the ToDecimalString and ToHexString where an 11329 incorrect 11330 exception code was returned if the resulting string would be > 200 chars. 11331 AE_STRING_LIMIT is now returned. 11332 11333 Fixed a problem with the Concatenate operator where AE_OK was always 11334 returned, even if the operation failed. 11335 11336 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 11337 semaphores to be allocated. 11338 11339 Code and Data Size: Current and previous core subsystem library sizes are 11340 shown below. These are the code and data sizes for the acpica.lib 11341 produced 11342 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11343 any ACPI driver or OSPM code. The debug version of the code includes the 11344 debug output trace mechanism and has a much larger code and data size. 11345 Note 11346 that these values will vary depending on the efficiency of the compiler 11347 and 11348 the compiler options used during generation. 11349 11350 Previous Release: 11351 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 11352 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 11353 Current Release: 11354 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11355 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 11356 11357 11358 2) iASL Compiler/Disassembler: 11359 11360 Fixed typechecking for the ObjectType and SizeOf operators. Problem was 11361 recently introduced in 20041119. 11362 11363 Fixed a problem with the ToUUID macro where the upper nybble of each 11364 buffer 11365 byte was inadvertently set to zero. 11366 11367 ---------------------------------------- 11368 19 November 2004. Summary of changes for version 20041119: 11369 11370 1) ACPI CA Core Subsystem: 11371 11372 Fixed a problem in the internal ConvertToInteger routine where new 11373 integers 11374 were not truncated to 32 bits for 32-bit ACPI tables. This routine 11375 converts 11376 buffers and strings to integers. 11377 11378 Implemented support to store a value to an Index() on a String object. 11379 This 11380 is an ACPI 2.0 feature that had not yet been implemented. 11381 11382 Implemented new behavior for storing objects to individual package 11383 elements 11384 (via the Index() operator). The previous behavior was to invoke the 11385 implicit 11386 conversion rules if an object was already present at the index. The new 11387 behavior is to simply delete any existing object and directly store the 11388 new 11389 object. Although the ACPI specification seems unclear on this subject, 11390 other 11391 ACPI implementations behave in this manner. (This is the root of the 11392 AE_BAD_HEX_CONSTANT issue.) 11393 11394 Modified the RSDP memory scan mechanism to support the extended checksum 11395 for 11396 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 11397 RSDP signature is found with a valid checksum. 11398 11399 Code and Data Size: Current and previous core subsystem library sizes are 11400 shown below. These are the code and data sizes for the acpica.lib 11401 produced 11402 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11403 any ACPI driver or OSPM code. The debug version of the code includes the 11404 debug output trace mechanism and has a much larger code and data size. 11405 Note 11406 that these values will vary depending on the efficiency of the compiler 11407 and 11408 the compiler options used during generation. 11409 11410 Previous Release: 11411 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 11412 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 11413 Current Release: 11414 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 11415 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 11416 11417 11418 2) iASL Compiler/Disassembler: 11419 11420 Fixed a missing semicolon in the aslcompiler.y file. 11421 11422 ---------------------------------------- 11423 05 November 2004. Summary of changes for version 20041105: 11424 11425 1) ACPI CA Core Subsystem: 11426 11427 Implemented support for FADT revision 2. This was an interim table 11428 (between 11429 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 11430 11431 Implemented optional support to allow uninitialized LocalX and ArgX 11432 variables in a control method. The variables are initialized to an 11433 Integer 11434 object with a value of zero. This support is enabled by setting the 11435 AcpiGbl_EnableInterpreterSlack flag to TRUE. 11436 11437 Implemented support for Integer objects for the SizeOf operator. Either 11438 4 11439 or 8 is returned, depending on the current integer size (32-bit or 64- 11440 bit, 11441 depending on the parent table revision). 11442 11443 Fixed a problem in the implementation of the SizeOf and ObjectType 11444 operators 11445 where the operand was resolved to a value too early, causing incorrect 11446 return values for some objects. 11447 11448 Fixed some possible memory leaks during exceptional conditions. 11449 11450 Code and Data Size: Current and previous core subsystem library sizes are 11451 shown below. These are the code and data sizes for the acpica.lib 11452 produced 11453 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11454 any ACPI driver or OSPM code. The debug version of the code includes the 11455 debug output trace mechanism and has a much larger code and data size. 11456 Note 11457 that these values will vary depending on the efficiency of the compiler 11458 and 11459 the compiler options used during generation. 11460 11461 Previous Release: 11462 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 11463 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 11464 Current Release: 11465 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 11466 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 11467 11468 11469 2) iASL Compiler/Disassembler: 11470 11471 Implemented support for all ACPI 3.0 reserved names and methods. 11472 11473 Implemented all ACPI 3.0 grammar elements in the front-end, including 11474 support for semicolons. 11475 11476 Implemented the ACPI 3.0 Function() and ToUUID() macros 11477 11478 Fixed a problem in the disassembler where a Scope() operator would not be 11479 emitted properly if the target of the scope was in another table. 11480 11481 ---------------------------------------- 11482 15 October 2004. Summary of changes for version 20041015: 11483 11484 Note: ACPI CA is currently undergoing an in-depth and complete formal 11485 evaluation to test/verify the following areas. Other suggestions are 11486 welcome. This will result in an increase in the frequency of releases and 11487 the number of bug fixes in the next few months. 11488 - Functional tests for all ASL/AML operators 11489 - All implicit/explicit type conversions 11490 - Bit fields and operation regions 11491 - 64-bit math support and 32-bit-only "truncated" math support 11492 - Exceptional conditions, both compiler and interpreter 11493 - Dynamic object deletion and memory leaks 11494 - ACPI 3.0 support when implemented 11495 - External interfaces to the ACPI subsystem 11496 11497 11498 1) ACPI CA Core Subsystem: 11499 11500 Fixed two alignment issues on 64-bit platforms - within debug statements 11501 in 11502 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the 11503 Address 11504 field within the non-aligned ACPI generic address structure. 11505 11506 Fixed a problem in the Increment and Decrement operators where incorrect 11507 operand resolution could result in the inadvertent modification of the 11508 original integer when the integer is passed into another method as an 11509 argument and the arg is then incremented/decremented. 11510 11511 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64- 11512 bit 11513 BCD number were truncated during conversion. 11514 11515 Fixed a problem in the ToDecimal operator where the length of the 11516 resulting 11517 string could be set incorrectly too long if the input operand was a 11518 Buffer 11519 object. 11520 11521 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte 11522 (0) 11523 within a buffer would prematurely terminate a compare between buffer 11524 objects. 11525 11526 Added a check for string overflow (>200 characters as per the ACPI 11527 specification) during the Concatenate operator with two string operands. 11528 11529 Code and Data Size: Current and previous core subsystem library sizes are 11530 shown below. These are the code and data sizes for the acpica.lib 11531 produced 11532 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11533 any ACPI driver or OSPM code. The debug version of the code includes the 11534 debug output trace mechanism and has a much larger code and data size. 11535 Note 11536 that these values will vary depending on the efficiency of the compiler 11537 and 11538 the compiler options used during generation. 11539 11540 Previous Release: 11541 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 11542 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 11543 Current Release: 11544 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 11545 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 11546 11547 11548 11549 2) iASL Compiler/Disassembler: 11550 11551 Allow the use of the ObjectType operator on uninitialized Locals and Args 11552 (returns 0 as per the ACPI specification). 11553 11554 Fixed a problem where the compiler would fault if there was a syntax 11555 error 11556 in the FieldName of all of the various CreateXXXField operators. 11557 11558 Disallow the use of lower case letters within the EISAID macro, as per 11559 the 11560 ACPI specification. All EISAID strings must be of the form "UUUNNNN" 11561 Where 11562 U is an uppercase letter and N is a hex digit. 11563 11564 11565 ---------------------------------------- 11566 06 October 2004. Summary of changes for version 20041006: 11567 11568 1) ACPI CA Core Subsystem: 11569 11570 Implemented support for the ACPI 3.0 Timer operator. This ASL function 11571 implements a 64-bit timer with 100 nanosecond granularity. 11572 11573 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 11574 implement the ACPI 3.0 Timer operator. This allows the host OS to 11575 implement 11576 the timer with the best clock available. Also, it keeps the core 11577 subsystem 11578 out of the clock handling business, since the host OS (usually) performs 11579 this function. 11580 11581 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 11582 functions use a 64-bit address which is part of the packed ACPI Generic 11583 Address Structure. Since the structure is non-aligned, the alignment 11584 macros 11585 are now used to extract the address to a local variable before use. 11586 11587 Fixed a problem where the ToInteger operator assumed all input strings 11588 were 11589 hexadecimal. The operator now handles both decimal strings and hex 11590 strings 11591 (prefixed with "0x"). 11592 11593 Fixed a problem where the string length in the string object created as a 11594 result of the internal ConvertToString procedure could be incorrect. This 11595 potentially affected all implicit conversions and also the 11596 ToDecimalString 11597 and ToHexString operators. 11598 11599 Fixed two problems in the ToString operator. If the length parameter was 11600 zero, an incorrect string object was created and the value of the input 11601 length parameter was inadvertently changed from zero to Ones. 11602 11603 Fixed a problem where the optional ResourceSource string in the 11604 ExtendedIRQ 11605 resource macro was ignored. 11606 11607 Simplified the interfaces to the internal division functions, reducing 11608 code 11609 size and complexity. 11610 11611 Code and Data Size: Current and previous core subsystem library sizes are 11612 shown below. These are the code and data sizes for the acpica.lib 11613 produced 11614 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11615 any ACPI driver or OSPM code. The debug version of the code includes the 11616 debug output trace mechanism and has a much larger code and data size. 11617 Note 11618 that these values will vary depending on the efficiency of the compiler 11619 and 11620 the compiler options used during generation. 11621 11622 Previous Release: 11623 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 11624 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 11625 Current Release: 11626 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 11627 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 11628 11629 11630 2) iASL Compiler/Disassembler: 11631 11632 Implemented support for the ACPI 3.0 Timer operator. 11633 11634 Fixed a problem where the Default() operator was inadvertently ignored in 11635 a 11636 Switch/Case block. This was a problem in the translation of the Switch 11637 statement to If...Else pairs. 11638 11639 Added support to allow a standalone Return operator, with no parentheses 11640 (or 11641 operands). 11642 11643 Fixed a problem with code generation for the ElseIf operator where the 11644 translated Else...If parse tree was improperly constructed leading to the 11645 loss of some code. 11646 11647 ---------------------------------------- 11648 22 September 2004. Summary of changes for version 20040922: 11649 11650 1) ACPI CA Core Subsystem: 11651 11652 Fixed a problem with the implementation of the LNot() operator where 11653 "Ones" 11654 was not returned for the TRUE case. Changed the code to return Ones 11655 instead 11656 of (!Arg) which was usually 1. This change affects iASL constant folding 11657 for 11658 this operator also. 11659 11660 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was 11661 not 11662 initialized properly -- Now zero the entire buffer in this case where the 11663 buffer already exists. 11664 11665 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 11666 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 11667 related code considerably. This will require changes/updates to all OS 11668 interface layers (OSLs.) 11669 11670 Implemented a new external interface, AcpiInstallExceptionHandler, to 11671 allow 11672 a system exception handler to be installed. This handler is invoked upon 11673 any 11674 run-time exception that occurs during control method execution. 11675 11676 Added support for the DSDT in AcpiTbFindTable. This allows the 11677 DataTableRegion() operator to access the local copy of the DSDT. 11678 11679 Code and Data Size: Current and previous core subsystem library sizes are 11680 shown below. These are the code and data sizes for the acpica.lib 11681 produced 11682 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11683 any ACPI driver or OSPM code. The debug version of the code includes the 11684 debug output trace mechanism and has a much larger code and data size. 11685 Note 11686 that these values will vary depending on the efficiency of the compiler 11687 and 11688 the compiler options used during generation. 11689 11690 Previous Release: 11691 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 11692 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 11693 Current Release: 11694 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 11695 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 11696 11697 11698 2) iASL Compiler/Disassembler: 11699 11700 Fixed a problem with constant folding and the LNot operator. LNot was 11701 returning 1 in the TRUE case, not Ones as per the ACPI specification. 11702 This 11703 could result in the generation of an incorrect folded/reduced constant. 11704 11705 End-Of-File is now allowed within a "//"-style comment. A parse error no 11706 longer occurs if such a comment is at the very end of the input ASL 11707 source 11708 file. 11709 11710 Implemented the "-r" option to override the Revision in the table header. 11711 The initial use of this option will be to simplify the evaluation of the 11712 AML 11713 interpreter by allowing a single ASL source module to be compiled for 11714 either 11715 32-bit or 64-bit integers. 11716 11717 11718 ---------------------------------------- 11719 27 August 2004. Summary of changes for version 20040827: 11720 11721 1) ACPI CA Core Subsystem: 11722 11723 - Implemented support for implicit object conversion in the non-numeric 11724 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, 11725 and 11726 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 11727 the second operand is implicitly converted on the fly to match the type 11728 of 11729 the first operand. For example: 11730 11731 LEqual (Source1, Source2) 11732 11733 Source1 and Source2 must each evaluate to an integer, a string, or a 11734 buffer. 11735 The data type of Source1 dictates the required type of Source2. Source2 11736 is 11737 implicitly converted if necessary to match the type of Source1. 11738 11739 - Updated and corrected the behavior of the string conversion support. 11740 The 11741 rules concerning conversion of buffers to strings (according to the ACPI 11742 specification) are as follows: 11743 11744 ToDecimalString - explicit byte-wise conversion of buffer to string of 11745 decimal values (0-255) separated by commas. ToHexString - explicit byte- 11746 wise 11747 conversion of buffer to string of hex values (0-FF) separated by commas. 11748 ToString - explicit byte-wise conversion of buffer to string. Byte-by- 11749 byte 11750 copy with no transform except NULL terminated. Any other implicit buffer- 11751 to- 11752 string conversion - byte-wise conversion of buffer to string of hex 11753 values 11754 (0-FF) separated by spaces. 11755 11756 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 11757 11758 - Fixed a problem in AcpiNsGetPathnameLength where the returned length 11759 was 11760 one byte too short in the case of a node in the root scope. This could 11761 cause a fault during debug output. 11762 11763 - Code and Data Size: Current and previous core subsystem library sizes 11764 are 11765 shown below. These are the code and data sizes for the acpica.lib 11766 produced 11767 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11768 any ACPI driver or OSPM code. The debug version of the code includes the 11769 debug output trace mechanism and has a much larger code and data size. 11770 Note 11771 that these values will vary depending on the efficiency of the compiler 11772 and 11773 the compiler options used during generation. 11774 11775 Previous Release: 11776 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 11777 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 11778 Current Release: 11779 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 11780 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 11781 11782 11783 2) iASL Compiler/Disassembler: 11784 11785 - Fixed a Linux generation error. 11786 11787 11788 ---------------------------------------- 11789 16 August 2004. Summary of changes for version 20040816: 11790 11791 1) ACPI CA Core Subsystem: 11792 11793 Designed and implemented support within the AML interpreter for the so- 11794 called "implicit return". This support returns the result of the last 11795 ASL 11796 operation within a control method, in the absence of an explicit Return() 11797 operator. A few machines depend on this behavior, even though it is not 11798 explicitly supported by the ASL language. It is optional support that 11799 can 11800 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 11801 11802 Removed support for the PCI_Config address space from the internal low 11803 level 11804 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 11805 support was not used internally, and would not work correctly anyway 11806 because 11807 the PCI bus number and segment number were not supported. There are 11808 separate interfaces for PCI configuration space access because of the 11809 unique 11810 interface. 11811 11812 Code and Data Size: Current and previous core subsystem library sizes are 11813 shown below. These are the code and data sizes for the acpica.lib 11814 produced 11815 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11816 any ACPI driver or OSPM code. The debug version of the code includes the 11817 debug output trace mechanism and has a much larger code and data size. 11818 Note 11819 that these values will vary depending on the efficiency of the compiler 11820 and 11821 the compiler options used during generation. 11822 11823 Previous Release: 11824 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 11825 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 11826 Current Release: 11827 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 11828 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 11829 11830 11831 2) iASL Compiler/Disassembler: 11832 11833 Fixed a problem where constants in ASL expressions at the root level (not 11834 within a control method) could be inadvertently truncated during code 11835 generation. This problem was introduced in the 20040715 release. 11836 11837 11838 ---------------------------------------- 11839 15 July 2004. Summary of changes for version 20040715: 11840 11841 1) ACPI CA Core Subsystem: 11842 11843 Restructured the internal HW GPE interfaces to pass/track the current 11844 state 11845 of interrupts (enabled/disabled) in order to avoid possible deadlock and 11846 increase flexibility of the interfaces. 11847 11848 Implemented a "lexicographical compare" for String and Buffer objects 11849 within 11850 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual - 11851 - 11852 as per further clarification to the ACPI specification. Behavior is 11853 similar 11854 to C library "strcmp". 11855 11856 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 11857 external function. In the 32-bit non-debug case, the stack use has been 11858 reduced from 168 bytes to 32 bytes. 11859 11860 Deployed a new run-time configuration flag, 11861 AcpiGbl_EnableInterpreterSlack, 11862 whose purpose is to allow the AML interpreter to forgive certain bad AML 11863 constructs. Default setting is FALSE. 11864 11865 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field 11866 IO 11867 support code. If enabled, it allows field access to go beyond the end of 11868 a 11869 region definition if the field is within the region length rounded up to 11870 the 11871 next access width boundary (a common coding error.) 11872 11873 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 11874 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, 11875 these 11876 symbols are lowercased by the latest version of the AcpiSrc tool. 11877 11878 The prototypes for the PCI interfaces in acpiosxf.h have been updated to 11879 rename "Register" to simply "Reg" to prevent certain compilers from 11880 complaining. 11881 11882 Code and Data Size: Current and previous core subsystem library sizes are 11883 shown below. These are the code and data sizes for the acpica.lib 11884 produced 11885 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11886 any ACPI driver or OSPM code. The debug version of the code includes the 11887 debug output trace mechanism and has a much larger code and data size. 11888 Note 11889 that these values will vary depending on the efficiency of the compiler 11890 and 11891 the compiler options used during generation. 11892 11893 Previous Release: 11894 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 11895 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 11896 Current Release: 11897 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 11898 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 11899 11900 11901 2) iASL Compiler/Disassembler: 11902 11903 Implemented full support for Package objects within the Case() operator. 11904 Note: The Break() operator is currently not supported within Case blocks 11905 (TermLists) as there is some question about backward compatibility with 11906 ACPI 11907 1.0 interpreters. 11908 11909 11910 Fixed a problem where complex terms were not supported properly within 11911 the 11912 Switch() operator. 11913 11914 Eliminated extraneous warning for compiler-emitted reserved names of the 11915 form "_T_x". (Used in Switch/Case operators.) 11916 11917 Eliminated optimization messages for "_T_x" objects and small constants 11918 within the DefinitionBlock operator. 11919 11920 11921 ---------------------------------------- 11922 15 June 2004. Summary of changes for version 20040615: 11923 11924 1) ACPI CA Core Subsystem: 11925 11926 Implemented support for Buffer and String objects (as per ACPI 2.0) for 11927 the 11928 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 11929 LLessEqual. 11930 11931 All directory names in the entire source package are lower case, as they 11932 were in earlier releases. 11933 11934 Implemented "Disassemble" command in the AML debugger that will 11935 disassemble 11936 a single control method. 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: 77.7K Code, 11.5K Data, 89.2K Total 11951 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 11952 11953 Current Release: 11954 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 11955 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 11956 11957 11958 2) iASL Compiler/Disassembler: 11959 11960 Implemented support for Buffer and String objects (as per ACPI 2.0) for 11961 the 11962 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 11963 LLessEqual. 11964 11965 All directory names in the entire source package are lower case, as they 11966 were in earlier releases. 11967 11968 Fixed a fault when using the -g or -d<nofilename> options if the FADT was 11969 not found. 11970 11971 Fixed an issue with the Windows version of the compiler where later 11972 versions 11973 of Windows place the FADT in the registry under the name "FADT" and not 11974 "FACP" as earlier versions did. This applies when using the -g or - 11975 d<nofilename> options. The compiler now looks for both strings as 11976 necessary. 11977 11978 Fixed a problem with compiler namepath optimization where a namepath 11979 within 11980 the Scope() operator could not be optimized if the namepath was a subpath 11981 of 11982 the current scope path. 11983 11984 ---------------------------------------- 11985 27 May 2004. Summary of changes for version 20040527: 11986 11987 1) ACPI CA Core Subsystem: 11988 11989 Completed a new design and implementation for EBDA (Extended BIOS Data 11990 Area) 11991 support in the RSDP scan code. The original code improperly scanned for 11992 the 11993 EBDA by simply scanning from memory location 0 to 0x400. The correct 11994 method 11995 is to first obtain the EBDA pointer from within the BIOS data area, then 11996 scan 1K of memory starting at the EBDA pointer. There appear to be few 11997 if 11998 any machines that place the RSDP in the EBDA, however. 11999 12000 Integrated a fix for a possible fault during evaluation of BufferField 12001 arguments. Obsolete code that was causing the problem was removed. 12002 12003 Found and fixed a problem in the Field Support Code where data could be 12004 corrupted on a bit field read that starts on an aligned boundary but does 12005 not end on an aligned boundary. Merged the read/write "datum length" 12006 calculation code into a common procedure. 12007 12008 Rolled in a couple of changes to the FreeBSD-specific header. 12009 12010 12011 Code and Data Size: Current and previous core subsystem library sizes are 12012 shown below. These are the code and data sizes for the acpica.lib 12013 produced 12014 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12015 any ACPI driver or OSPM code. The debug version of the code includes the 12016 debug output trace mechanism and has a much larger code and data size. 12017 Note 12018 that these values will vary depending on the efficiency of the compiler 12019 and 12020 the compiler options used during generation. 12021 12022 Previous Release: 12023 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 12024 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 12025 Current Release: 12026 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 12027 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 12028 12029 12030 2) iASL Compiler/Disassembler: 12031 12032 Fixed a generation warning produced by some overly-verbose compilers for 12033 a 12034 64-bit constant. 12035 12036 ---------------------------------------- 12037 14 May 2004. Summary of changes for version 20040514: 12038 12039 1) ACPI CA Core Subsystem: 12040 12041 Fixed a problem where hardware GPE enable bits sometimes not set properly 12042 during and after GPE method execution. Result of 04/27 changes. 12043 12044 Removed extra "clear all GPEs" when sleeping/waking. 12045 12046 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 12047 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above 12048 to 12049 the new AcpiEv* calls as appropriate. 12050 12051 ACPI_OS_NAME was removed from the OS-specific headers. The default name 12052 is 12053 now "Microsoft Windows NT" for maximum compatibility. However this can 12054 be 12055 changed by modifying the acconfig.h file. 12056 12057 Allow a single invocation of AcpiInstallNotifyHandler for a handler that 12058 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 12059 12060 Run _INI methods on ThermalZone objects. This is against the ACPI 12061 specification, but there is apparently ASL code in the field that has 12062 these 12063 _INI methods, and apparently "other" AML interpreters execute them. 12064 12065 Performed a full 16/32/64 bit lint that resulted in some small changes. 12066 12067 Added a sleep simulation command to the AML debugger to test sleep code. 12068 12069 Code and Data Size: Current and previous core subsystem library sizes are 12070 shown below. These are the code and data sizes for the acpica.lib 12071 produced 12072 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12073 any ACPI driver or OSPM code. The debug version of the code includes the 12074 debug output trace mechanism and has a much larger code and data size. 12075 Note 12076 that these values will vary depending on the efficiency of the compiler 12077 and 12078 the compiler options used during generation. 12079 12080 Previous Release: 12081 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 12082 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 12083 Current Release: 12084 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 12085 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 12086 12087 ---------------------------------------- 12088 27 April 2004. Summary of changes for version 20040427: 12089 12090 1) ACPI CA Core Subsystem: 12091 12092 Completed a major overhaul of the GPE handling within ACPI CA. There are 12093 now three types of GPEs: wake-only, runtime-only, and combination 12094 wake/run. 12095 The only GPEs allowed to be combination wake/run are for button-style 12096 devices such as a control-method power button, control-method sleep 12097 button, 12098 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are 12099 not 12100 referenced by any _PRW methods are marked for "runtime" and hardware 12101 enabled. Any GPE that is referenced by a _PRW method is marked for 12102 "wake" 12103 (and disabled at runtime). However, at sleep time, only those GPEs that 12104 have been specifically enabled for wake via the AcpiEnableGpe interface 12105 will 12106 actually be hardware enabled. 12107 12108 A new external interface has been added, AcpiSetGpeType(), that is meant 12109 to 12110 be used by device drivers to force a GPE to a particular type. It will 12111 be 12112 especially useful for the drivers for the button devices mentioned above. 12113 12114 Completed restructuring of the ACPI CA initialization sequence so that 12115 default operation region handlers are installed before GPEs are 12116 initialized 12117 and the _PRW methods are executed. This will prevent errors when the 12118 _PRW 12119 methods attempt to access system memory or I/O space. 12120 12121 GPE enable/disable no longer reads the GPE enable register. We now keep 12122 the 12123 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 12124 thus no longer depend on the hardware to maintain these bits. 12125 12126 Always clear the wake status and fixed/GPE status bits before sleep, even 12127 for state S5. 12128 12129 Improved the AML debugger output for displaying the GPE blocks and their 12130 current status. 12131 12132 Added new strings for the _OSI method, of the form "Windows 2001 SPx" 12133 where 12134 x = 0,1,2,3,4. 12135 12136 Fixed a problem where the physical address was incorrectly calculated 12137 when 12138 the Load() operator was used to directly load from an Operation Region 12139 (vs. 12140 loading from a Field object.) Also added check for minimum table length 12141 for 12142 this case. 12143 12144 Fix for multiple mutex acquisition. Restore original thread SyncLevel on 12145 mutex release. 12146 12147 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 12148 consistency with the other fields returned. 12149 12150 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 12151 structure for each GPE in the system, so the size of this structure is 12152 important. 12153 12154 CPU stack requirement reduction: Cleaned up the method execution and 12155 object 12156 evaluation paths so that now a parameter structure is passed, instead of 12157 copying the various method parameters over and over again. 12158 12159 In evregion.c: Correctly exit and reenter the interpreter region if and 12160 only if dispatching an operation region request to a user-installed 12161 handler. 12162 Do not exit/reenter when dispatching to a default handler (e.g., default 12163 system memory or I/O handlers) 12164 12165 12166 Notes for updating drivers for the new GPE support. The following 12167 changes 12168 must be made to ACPI-related device drivers that are attached to one or 12169 more 12170 GPEs: (This information will be added to the ACPI CA Programmer 12171 Reference.) 12172 12173 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you 12174 must 12175 explicitly call AcpiEnableGpe. 12176 2) There is a new interface called AcpiSetGpeType. This should be called 12177 before enabling the GPE. Also, this interface will automatically disable 12178 the GPE if it is currently enabled. 12179 3) AcpiEnableGpe no longer supports a GPE type flag. 12180 12181 Specific drivers that must be changed: 12182 1) EC driver: 12183 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 12184 AeGpeHandler, NULL); 12185 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 12186 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 12187 12188 2) Button Drivers (Power, Lid, Sleep): 12189 Run _PRW method under parent device 12190 If _PRW exists: /* This is a control-method button */ 12191 Extract GPE number and possibly GpeDevice 12192 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 12193 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 12194 12195 For all other devices that have _PRWs, we automatically set the GPE type 12196 to 12197 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. 12198 This 12199 must be done on a selective basis, usually requiring some kind of user 12200 app 12201 to allow the user to pick the wake devices. 12202 12203 12204 Code and Data Size: Current and previous core subsystem library sizes are 12205 shown below. These are the code and data sizes for the acpica.lib 12206 produced 12207 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12208 any ACPI driver or OSPM code. The debug version of the code includes the 12209 debug output trace mechanism and has a much larger code and data size. 12210 Note 12211 that these values will vary depending on the efficiency of the compiler 12212 and 12213 the compiler options used during generation. 12214 12215 Previous Release: 12216 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 12217 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 12218 Current Release: 12219 12220 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 12221 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 12222 12223 12224 12225 ---------------------------------------- 12226 02 April 2004. Summary of changes for version 20040402: 12227 12228 1) ACPI CA Core Subsystem: 12229 12230 Fixed an interpreter problem where an indirect store through an ArgX 12231 parameter was incorrectly applying the "implicit conversion rules" during 12232 the store. From the ACPI specification: "If the target is a method local 12233 or 12234 argument (LocalX or ArgX), no conversion is performed and the result is 12235 stored directly to the target". The new behavior is to disable implicit 12236 conversion during ALL stores to an ArgX. 12237 12238 Changed the behavior of the _PRW method scan to ignore any and all errors 12239 returned by a given _PRW. This prevents the scan from aborting from the 12240 failure of any single _PRW. 12241 12242 Moved the runtime configuration parameters from the global init procedure 12243 to 12244 static variables in acglobal.h. This will allow the host to override the 12245 default values easily. 12246 12247 Code and Data Size: Current and previous core subsystem library sizes are 12248 shown below. These are the code and data sizes for the acpica.lib 12249 produced 12250 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12251 any ACPI driver or OSPM code. The debug version of the code includes the 12252 debug output trace mechanism and has a much larger code and data size. 12253 Note 12254 that these values will vary depending on the efficiency of the compiler 12255 and 12256 the compiler options used during generation. 12257 12258 Previous Release: 12259 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 12260 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 12261 Current Release: 12262 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 12263 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 12264 12265 12266 2) iASL Compiler/Disassembler: 12267 12268 iASL now fully disassembles SSDTs. However, External() statements are 12269 not 12270 generated automatically for unresolved symbols at this time. This is a 12271 planned feature for future implementation. 12272 12273 Fixed a scoping problem in the disassembler that occurs when the type of 12274 the 12275 target of a Scope() operator is overridden. This problem caused an 12276 incorrectly nested internal namespace to be constructed. 12277 12278 Any warnings or errors that are emitted during disassembly are now 12279 commented 12280 out automatically so that the resulting file can be recompiled without 12281 any 12282 hand editing. 12283 12284 ---------------------------------------- 12285 26 March 2004. Summary of changes for version 20040326: 12286 12287 1) ACPI CA Core Subsystem: 12288 12289 Implemented support for "wake" GPEs via interaction between GPEs and the 12290 _PRW methods. Every GPE that is pointed to by one or more _PRWs is 12291 identified as a WAKE GPE and by default will no longer be enabled at 12292 runtime. Previously, we were blindly enabling all GPEs with a 12293 corresponding 12294 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. 12295 We 12296 believe this has been the cause of thousands of "spurious" GPEs on some 12297 systems. 12298 12299 This new GPE behavior is can be reverted to the original behavior (enable 12300 ALL GPEs at runtime) via a runtime flag. 12301 12302 Fixed a problem where aliased control methods could not access objects 12303 properly. The proper scope within the namespace was not initialized 12304 (transferred to the target of the aliased method) before executing the 12305 target method. 12306 12307 Fixed a potential race condition on internal object deletion on the 12308 return 12309 object in AcpiEvaluateObject. 12310 12311 Integrated a fix for resource descriptors where both _MEM and _MTP were 12312 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 12313 wide, 0x0F instead of 0x03.) 12314 12315 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, 12316 preventing 12317 a 12318 fault in some cases. 12319 12320 Updated Notify() values for debug statements in evmisc.c 12321 12322 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 12323 12324 Code and Data Size: Current and previous core subsystem library sizes are 12325 shown below. These are the code and data sizes for the acpica.lib 12326 produced 12327 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12328 any ACPI driver or OSPM code. The debug version of the code includes the 12329 debug output trace mechanism and has a much larger code and data size. 12330 Note 12331 that these values will vary depending on the efficiency of the compiler 12332 and 12333 the compiler options used during generation. 12334 12335 Previous Release: 12336 12337 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 12338 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 12339 Current Release: 12340 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 12341 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 12342 12343 ---------------------------------------- 12344 11 March 2004. Summary of changes for version 20040311: 12345 12346 1) ACPI CA Core Subsystem: 12347 12348 Fixed a problem where errors occurring during the parse phase of control 12349 method execution did not abort cleanly. For example, objects created and 12350 installed in the namespace were not deleted. This caused all subsequent 12351 invocations of the method to return the AE_ALREADY_EXISTS exception. 12352 12353 Implemented a mechanism to force a control method to "Serialized" 12354 execution 12355 if the method attempts to create namespace objects. (The root of the 12356 AE_ALREADY_EXISTS problem.) 12357 12358 Implemented support for the predefined _OSI "internal" control method. 12359 Initial supported strings are "Linux", "Windows 2000", "Windows 2001", 12360 and 12361 "Windows 2001.1", and can be easily upgraded for new strings as 12362 necessary. 12363 This feature will allow "other" operating systems to execute the fully 12364 tested, "Windows" code path through the ASL code 12365 12366 Global Lock Support: Now allows multiple acquires and releases with any 12367 internal thread. Removed concept of "owning thread" for this special 12368 mutex. 12369 12370 Fixed two functions that were inappropriately declaring large objects on 12371 the 12372 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage 12373 during 12374 method execution considerably. 12375 12376 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 12377 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 12378 12379 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 12380 defined on the machine. 12381 12382 Implemented two runtime options: One to force all control method 12383 execution 12384 to "Serialized" to mimic Windows behavior, another to disable _OSI 12385 support 12386 if it causes problems on a given machine. 12387 12388 Code and Data Size: Current and previous core subsystem library sizes are 12389 shown below. These are the code and data sizes for the acpica.lib 12390 produced 12391 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12392 any ACPI driver or OSPM code. The debug version of the code includes the 12393 debug output trace mechanism and has a much larger code and data size. 12394 Note 12395 that these values will vary depending on the efficiency of the compiler 12396 and 12397 the compiler options used during generation. 12398 12399 Previous Release: 12400 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 12401 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 12402 Current Release: 12403 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 12404 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 12405 12406 2) iASL Compiler/Disassembler: 12407 12408 Fixed an array size problem for FreeBSD that would cause the compiler to 12409 fault. 12410 12411 ---------------------------------------- 12412 20 February 2004. Summary of changes for version 20040220: 12413 12414 12415 1) ACPI CA Core Subsystem: 12416 12417 Implemented execution of _SxD methods for Device objects in the 12418 GetObjectInfo interface. 12419 12420 Fixed calls to _SST method to pass the correct arguments. 12421 12422 Added a call to _SST on wake to restore to "working" state. 12423 12424 Check for End-Of-Buffer failure case in the WalkResources interface. 12425 12426 Integrated fix for 64-bit alignment issue in acglobal.h by moving two 12427 structures to the beginning of the file. 12428 12429 After wake, clear GPE status register(s) before enabling GPEs. 12430 12431 After wake, clear/enable power button. (Perhaps we should clear/enable 12432 all 12433 fixed events upon wake.) 12434 12435 Fixed a couple of possible memory leaks in the Namespace manager. 12436 12437 Integrated latest acnetbsd.h file. 12438 12439 ---------------------------------------- 12440 11 February 2004. Summary of changes for version 20040211: 12441 12442 12443 1) ACPI CA Core Subsystem: 12444 12445 Completed investigation and implementation of the call-by-reference 12446 mechanism for control method arguments. 12447 12448 Fixed a problem where a store of an object into an indexed package could 12449 fail if the store occurs within a different method than the method that 12450 created the package. 12451 12452 Fixed a problem where the ToDecimal operator could return incorrect 12453 results. 12454 12455 Fixed a problem where the CopyObject operator could fail on some of the 12456 more 12457 obscure objects (e.g., Reference objects.) 12458 12459 Improved the output of the Debug object to display buffer, package, and 12460 index objects. 12461 12462 Fixed a problem where constructs of the form "RefOf (ArgX)" did not 12463 return 12464 the expected result. 12465 12466 Added permanent ACPI_REPORT_ERROR macros for all instances of the 12467 ACPI_AML_INTERNAL exception. 12468 12469 Integrated latest version of acfreebsd.h 12470 12471 ---------------------------------------- 12472 16 January 2004. Summary of changes for version 20040116: 12473 12474 The purpose of this release is primarily to update the copyright years in 12475 each module, thus causing a huge number of diffs. There are a few small 12476 functional changes, however. 12477 12478 1) ACPI CA Core Subsystem: 12479 12480 Improved error messages when there is a problem finding one or more of 12481 the 12482 required base ACPI tables 12483 12484 Reintroduced the definition of APIC_HEADER in actbl.h 12485 12486 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 12487 12488 Removed extraneous reference to NewObj in dsmthdat.c 12489 12490 2) iASL compiler 12491 12492 Fixed a problem introduced in December that disabled the correct 12493 disassembly 12494 of Resource Templates 12495 12496 12497 ---------------------------------------- 12498 03 December 2003. Summary of changes for version 20031203: 12499 12500 1) ACPI CA Core Subsystem: 12501 12502 Changed the initialization of Operation Regions during subsystem 12503 init to perform two entire walks of the ACPI namespace; The first 12504 to initialize the regions themselves, the second to execute the 12505 _REG methods. This fixed some interdependencies across _REG 12506 methods found on some machines. 12507 12508 Fixed a problem where a Store(Local0, Local1) could simply update 12509 the object reference count, and not create a new copy of the 12510 object if the Local1 is uninitialized. 12511 12512 Implemented support for the _SST reserved method during sleep 12513 transitions. 12514 12515 Implemented support to clear the SLP_TYP and SLP_EN bits when 12516 waking up, this is apparently required by some machines. 12517 12518 When sleeping, clear the wake status only if SleepState is not S5. 12519 12520 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 12521 pointer arithmetic advanced a string pointer too far. 12522 12523 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 12524 could be returned if the requested table has not been loaded. 12525 12526 Within the support for IRQ resources, restructured the handling of 12527 the active and edge/level bits. 12528 12529 Fixed a few problems in AcpiPsxExecute() where memory could be 12530 leaked under certain error conditions. 12531 12532 Improved error messages for the cases where the ACPI mode could 12533 not be entered. 12534 12535 Code and Data Size: Current and previous core subsystem library 12536 sizes are shown below. These are the code and data sizes for the 12537 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12538 these values do not include any ACPI driver or OSPM code. The 12539 debug version of the code includes the debug output trace 12540 mechanism and has a much larger code and data size. Note that 12541 these values will vary depending on the efficiency of the compiler 12542 and the compiler options used during generation. 12543 12544 Previous Release (20031029): 12545 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 12546 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 12547 Current Release: 12548 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 12549 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 12550 12551 2) iASL Compiler/Disassembler: 12552 12553 Implemented a fix for the iASL disassembler where a bad index was 12554 generated. This was most noticeable on 64-bit platforms 12555 12556 12557 ---------------------------------------- 12558 29 October 2003. Summary of changes for version 20031029: 12559 12560 1) ACPI CA Core Subsystem: 12561 12562 12563 Fixed a problem where a level-triggered GPE with an associated 12564 _Lxx control method was incorrectly cleared twice. 12565 12566 Fixed a problem with the Field support code where an access can 12567 occur beyond the end-of-region if the field is non-aligned but 12568 extends to the very end of the parent region (resulted in an 12569 AE_AML_REGION_LIMIT exception.) 12570 12571 Fixed a problem with ACPI Fixed Events where an RT Clock handler 12572 would not get invoked on an RTC event. The RTC event bitmasks for 12573 the PM1 registers were not being initialized properly. 12574 12575 Implemented support for executing _STA and _INI methods for 12576 Processor objects. Although this is currently not part of the 12577 ACPI specification, there is existing ASL code that depends on the 12578 init-time execution of these methods. 12579 12580 Implemented and deployed a GetDescriptorName function to decode 12581 the various types of internal descriptors. Guards against null 12582 descriptors during debug output also. 12583 12584 Implemented and deployed a GetNodeName function to extract the 4- 12585 character namespace node name. This function simplifies the debug 12586 and error output, as well as guarding against null pointers during 12587 output. 12588 12589 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 12590 simplify the debug and error output of 64-bit integers. This 12591 macro replaces the HIDWORD and LODWORD macros for dumping these 12592 integers. 12593 12594 Updated the implementation of the Stall() operator to only call 12595 AcpiOsStall(), and also return an error if the operand is larger 12596 than 255. This preserves the required behavior of not 12597 relinquishing the processor, as would happen if AcpiOsSleep() was 12598 called for "long stalls". 12599 12600 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 12601 initialized are now treated as NOOPs. 12602 12603 Cleaned up a handful of warnings during 64-bit generation. 12604 12605 Fixed a reported error where and incorrect GPE number was passed 12606 to the GPE dispatch handler. This value is only used for error 12607 output, however. Used this opportunity to clean up and streamline 12608 the GPE dispatch code. 12609 12610 Code and Data Size: Current and previous core subsystem library 12611 sizes are shown below. These are the code and data sizes for the 12612 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12613 these values do not include any ACPI driver or OSPM code. The 12614 12615 debug version of the code includes the debug output trace 12616 mechanism and has a much larger code and data size. Note that 12617 these values will vary depending on the efficiency of the compiler 12618 and the compiler options used during generation. 12619 12620 Previous Release (20031002): 12621 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 12622 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 12623 Current Release: 12624 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 12625 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 12626 12627 12628 2) iASL Compiler/Disassembler: 12629 12630 Updated the iASL compiler to return an error if the operand to the 12631 Stall() operator is larger than 255. 12632 12633 12634 ---------------------------------------- 12635 02 October 2003. Summary of changes for version 20031002: 12636 12637 12638 1) ACPI CA Core Subsystem: 12639 12640 Fixed a problem with Index Fields where the index was not 12641 incremented for fields that require multiple writes to the 12642 index/data registers (Fields that are wider than the data 12643 register.) 12644 12645 Fixed a problem with all Field objects where a write could go 12646 beyond the end-of-field if the field was larger than the access 12647 granularity and therefore required multiple writes to complete the 12648 request. An extra write beyond the end of the field could happen 12649 inadvertently. 12650 12651 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 12652 would incorrectly be returned if the width of the Data Register 12653 was larger than the specified field access width. 12654 12655 Completed fixes for LoadTable() and Unload() and verified their 12656 operation. Implemented full support for the "DdbHandle" object 12657 throughout the ACPI CA subsystem. 12658 12659 Implemented full support for the MADT and ECDT tables in the ACPI 12660 CA header files. Even though these tables are not directly 12661 consumed by ACPI CA, the header definitions are useful for ACPI 12662 device drivers. 12663 12664 Integrated resource descriptor fixes posted to the Linux ACPI 12665 list. This included checks for minimum descriptor length, and 12666 support for trailing NULL strings within descriptors that have 12667 optional string elements. 12668 12669 Code and Data Size: Current and previous core subsystem library 12670 sizes are shown below. These are the code and data sizes for the 12671 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12672 these values do not include any ACPI driver or OSPM code. The 12673 debug version of the code includes the debug output trace 12674 mechanism and has a much larger code and data size. Note that 12675 these values will vary depending on the efficiency of the compiler 12676 and the compiler options used during generation. 12677 12678 Previous Release (20030918): 12679 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 12680 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 12681 Current Release: 12682 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 12683 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 12684 12685 12686 2) iASL Compiler: 12687 12688 Implemented detection of non-ASCII characters within the input 12689 source ASL file. This catches attempts to compile binary (AML) 12690 files early in the compile, with an informative error message. 12691 12692 Fixed a problem where the disassembler would fault if the output 12693 filename could not be generated or if the output file could not be 12694 opened. 12695 12696 ---------------------------------------- 12697 18 September 2003. Summary of changes for version 20030918: 12698 12699 12700 1) ACPI CA Core Subsystem: 12701 12702 Found and fixed a longstanding problem with the late execution of 12703 the various deferred AML opcodes (such as Operation Regions, 12704 Buffer Fields, Buffers, and Packages). If the name string 12705 specified for the name of the new object placed the object in a 12706 scope other than the current scope, the initialization/execution 12707 of the opcode failed. The solution to this problem was to 12708 implement a mechanism where the late execution of such opcodes 12709 does not attempt to lookup/create the name a second time in an 12710 incorrect scope. This fixes the "region size computed 12711 incorrectly" problem. 12712 12713 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 12714 Global Lock AE_BAD_PARAMETER error. 12715 12716 Fixed several 64-bit issues with prototypes, casting and data 12717 types. 12718 12719 Removed duplicate prototype from acdisasm.h 12720 12721 Fixed an issue involving EC Operation Region Detach (Shaohua Li) 12722 12723 Code and Data Size: Current and previous core subsystem library 12724 sizes are shown below. These are the code and data sizes for the 12725 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12726 these values do not include any ACPI driver or OSPM code. The 12727 debug version of the code includes the debug output trace 12728 mechanism and has a much larger code and data size. Note that 12729 these values will vary depending on the efficiency of the compiler 12730 and the compiler options used during generation. 12731 12732 Previous Release: 12733 12734 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 12735 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 12736 Current Release: 12737 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 12738 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 12739 12740 12741 2) Linux: 12742 12743 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 12744 correct sleep time in seconds. 12745 12746 ---------------------------------------- 12747 14 July 2003. Summary of changes for version 20030619: 12748 12749 1) ACPI CA Core Subsystem: 12750 12751 Parse SSDTs in order discovered, as opposed to reverse order 12752 (Hrvoje Habjanic) 12753 12754 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 12755 Klausner, 12756 Nate Lawson) 12757 12758 12759 2) Linux: 12760 12761 Dynamically allocate SDT list (suggested by Andi Kleen) 12762 12763 proc function return value cleanups (Andi Kleen) 12764 12765 Correctly handle NMI watchdog during long stalls (Andrew Morton) 12766 12767 Make it so acpismp=force works (reported by Andrew Morton) 12768 12769 12770 ---------------------------------------- 12771 19 June 2003. Summary of changes for version 20030619: 12772 12773 1) ACPI CA Core Subsystem: 12774 12775 Fix To/FromBCD, eliminating the need for an arch-specific #define. 12776 12777 Do not acquire a semaphore in the S5 shutdown path. 12778 12779 Fix ex_digits_needed for 0. (Takayoshi Kochi) 12780 12781 Fix sleep/stall code reversal. (Andi Kleen) 12782 12783 Revert a change having to do with control method calling 12784 semantics. 12785 12786 2) Linux: 12787 12788 acpiphp update (Takayoshi Kochi) 12789 12790 Export acpi_disabled for sonypi (Stelian Pop) 12791 12792 Mention acpismp=force in config help 12793 12794 Re-add acpitable.c and acpismp=force. This improves backwards 12795 12796 compatibility and also cleans up the code to a significant degree. 12797 12798 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 12799 12800 ---------------------------------------- 12801 22 May 2003. Summary of changes for version 20030522: 12802 12803 1) ACPI CA Core Subsystem: 12804 12805 Found and fixed a reported problem where an AE_NOT_FOUND error 12806 occurred occasionally during _BST evaluation. This turned out to 12807 be an Owner ID allocation issue where a called method did not get 12808 a new ID assigned to it. Eventually, (after 64k calls), the Owner 12809 ID UINT16 would wraparound so that the ID would be the same as the 12810 caller's and the called method would delete the caller's 12811 namespace. 12812 12813 Implemented extended error reporting for control methods that are 12814 aborted due to a run-time exception. Output includes the exact 12815 AML instruction that caused the method abort, a dump of the method 12816 locals and arguments at the time of the abort, and a trace of all 12817 nested control method calls. 12818 12819 Modified the interpreter to allow the creation of buffers of zero 12820 length from the AML code. Implemented new code to ensure that no 12821 attempt is made to actually allocate a memory buffer (of length 12822 zero) - instead, a simple buffer object with a NULL buffer pointer 12823 and length zero is created. A warning is no longer issued when 12824 the AML attempts to create a zero-length buffer. 12825 12826 Implemented a workaround for the "leading asterisk issue" in 12827 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 12828 asterisk is automatically removed if present in any HID, UID, or 12829 CID strings. The iASL compiler will still flag this asterisk as 12830 an error, however. 12831 12832 Implemented full support for _CID methods that return a package of 12833 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 12834 now additionally returns a device _CID list if present. This 12835 required a change to the external interface in order to pass an 12836 ACPI_BUFFER object as a parameter since the _CID list is of 12837 variable length. 12838 12839 Fixed a problem with the new AE_SAME_HANDLER exception where 12840 handler initialization code did not know about this exception. 12841 12842 Code and Data Size: Current and previous core subsystem library 12843 sizes are shown below. These are the code and data sizes for the 12844 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12845 these values do not include any ACPI driver or OSPM code. The 12846 debug version of the code includes the debug output trace 12847 mechanism and has a much larger code and data size. Note that 12848 these values will vary depending on the efficiency of the compiler 12849 and the compiler options used during generation. 12850 12851 Previous Release (20030509): 12852 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 12853 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 12854 Current Release: 12855 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 12856 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 12857 12858 12859 2) Linux: 12860 12861 Fixed a bug in which we would reinitialize the ACPI interrupt 12862 after it was already working, thus disabling all ACPI and the IRQs 12863 for any other device sharing the interrupt. (Thanks to Stian 12864 Jordet) 12865 12866 Toshiba driver update (John Belmonte) 12867 12868 Return only 0 or 1 for our interrupt handler status (Andrew 12869 Morton) 12870 12871 12872 3) iASL Compiler: 12873 12874 Fixed a reported problem where multiple (nested) ElseIf() 12875 statements were not handled correctly by the compiler, resulting 12876 in incorrect warnings and incorrect AML code. This was a problem 12877 in both the ASL parser and the code generator. 12878 12879 12880 4) Documentation: 12881 12882 Added changes to existing interfaces, new exception codes, and new 12883 text concerning reference count object management versus garbage 12884 collection. 12885 12886 ---------------------------------------- 12887 09 May 2003. Summary of changes for version 20030509. 12888 12889 12890 1) ACPI CA Core Subsystem: 12891 12892 Changed the subsystem initialization sequence to hold off 12893 installation of address space handlers until the hardware has been 12894 initialized and the system has entered ACPI mode. This is because 12895 the installation of space handlers can cause _REG methods to be 12896 run. Previously, the _REG methods could potentially be run before 12897 ACPI mode was enabled. 12898 12899 Fixed some memory leak issues related to address space handler and 12900 notify handler installation. There were some problems with the 12901 reference count mechanism caused by the fact that the handler 12902 objects are shared across several namespace objects. 12903 12904 Fixed a reported problem where reference counts within the 12905 namespace were not properly updated when named objects created by 12906 method execution were deleted. 12907 12908 Fixed a reported problem where multiple SSDTs caused a deletion 12909 issue during subsystem termination. Restructured the table data 12910 structures to simplify the linked lists and the related code. 12911 12912 Fixed a problem where the table ID associated with secondary 12913 tables (SSDTs) was not being propagated into the namespace objects 12914 created by those tables. This would only present a problem for 12915 tables that are unloaded at run-time, however. 12916 12917 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 12918 type as the length parameter (instead of UINT32). 12919 12920 Solved a long-standing problem where an ALREADY_EXISTS error 12921 appears on various systems. This problem could happen when there 12922 are multiple PCI_Config operation regions under a single PCI root 12923 bus. This doesn't happen very frequently, but there are some 12924 systems that do this in the ASL. 12925 12926 Fixed a reported problem where the internal DeleteNode function 12927 was incorrectly handling the case where a namespace node was the 12928 first in the parent's child list, and had additional peers (not 12929 the only child, but first in the list of children.) 12930 12931 Code and Data Size: Current core subsystem library sizes are shown 12932 below. These are the code and data sizes for the acpica.lib 12933 produced by the Microsoft Visual C++ 6.0 compiler, and these 12934 values do not include any ACPI driver or OSPM code. The debug 12935 version of the code includes the debug output trace mechanism and 12936 has a much larger code and data size. Note that these values will 12937 vary depending on the efficiency of the compiler and the compiler 12938 options used during generation. 12939 12940 Previous Release 12941 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 12942 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 12943 Current Release: 12944 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 12945 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 12946 12947 12948 2) Linux: 12949 12950 Allow ":" in OS override string (Ducrot Bruno) 12951 12952 Kobject fix (Greg KH) 12953 12954 12955 3 iASL Compiler/Disassembler: 12956 12957 Fixed a problem in the generation of the C source code files (AML 12958 is emitted in C source statements for BIOS inclusion) where the 12959 Ascii dump that appears within a C comment at the end of each line 12960 could cause a compile time error if the AML sequence happens to 12961 have an open comment or close comment sequence embedded. 12962 12963 12964 ---------------------------------------- 12965 24 April 2003. Summary of changes for version 20030424. 12966 12967 12968 1) ACPI CA Core Subsystem: 12969 12970 Support for big-endian systems has been implemented. Most of the 12971 support has been invisibly added behind big-endian versions of the 12972 ACPI_MOVE_* macros. 12973 12974 Fixed a problem in AcpiHwDisableGpeBlock() and 12975 AcpiHwClearGpeBlock() where an incorrect offset was passed to the 12976 low level hardware write routine. The offset parameter was 12977 actually eliminated from the low level read/write routines because 12978 they had become obsolete. 12979 12980 Fixed a problem where a handler object was deleted twice during 12981 the removal of a fixed event handler. 12982 12983 12984 2) Linux: 12985 12986 A fix for SMP systems with link devices was contributed by 12987 12988 Compaq's Dan Zink. 12989 12990 (2.5) Return whether we handled the interrupt in our IRQ handler. 12991 (Linux ISRs no longer return void, so we can propagate the handler 12992 return value from the ACPI CA core back to the OS.) 12993 12994 12995 12996 3) Documentation: 12997 12998 The ACPI CA Programmer Reference has been updated to reflect new 12999 interfaces and changes to existing interfaces. 13000 13001 ---------------------------------------- 13002 28 March 2003. Summary of changes for version 20030328. 13003 13004 1) ACPI CA Core Subsystem: 13005 13006 The GPE Block Device support has been completed. New interfaces 13007 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 13008 interfaces (enable, disable, clear, getstatus) have been split 13009 into separate interfaces for Fixed Events and General Purpose 13010 Events (GPEs) in order to support GPE Block Devices properly. 13011 13012 Fixed a problem where the error message "Failed to acquire 13013 semaphore" would appear during operations on the embedded 13014 controller (EC). 13015 13016 Code and Data Size: Current core subsystem library sizes are shown 13017 below. These are the code and data sizes for the acpica.lib 13018 produced by the Microsoft Visual C++ 6.0 compiler, and these 13019 values do not include any ACPI driver or OSPM code. The debug 13020 version of the code includes the debug output trace mechanism and 13021 has a much larger code and data size. Note that these values will 13022 vary depending on the efficiency of the compiler and the compiler 13023 options used during generation. 13024 13025 Previous Release 13026 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 13027 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 13028 Current Release: 13029 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 13030 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 13031 13032 13033 ---------------------------------------- 13034 28 February 2003. Summary of changes for version 20030228. 13035 13036 13037 1) ACPI CA Core Subsystem: 13038 13039 The GPE handling and dispatch code has been completely overhauled 13040 in preparation for support of GPE Block Devices (ID ACPI0006). 13041 This affects internal data structures and code only; there should 13042 be no differences visible externally. One new file has been 13043 added, evgpeblk.c 13044 13045 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 13046 fields that are used to determine the GPE block lengths. The 13047 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 13048 structures are ignored. This is per the ACPI specification but it 13049 isn't very clear. The full 256 Block 0/1 GPEs are now supported 13050 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 13051 13052 In the SCI interrupt handler, removed the read of the PM1_CONTROL 13053 register to look at the SCI_EN bit. On some machines, this read 13054 causes an SMI event and greatly slows down SCI events. (This may 13055 in fact be the cause of slow battery status response on some 13056 systems.) 13057 13058 Fixed a problem where a store of a NULL string to a package object 13059 could cause the premature deletion of the object. This was seen 13060 during execution of the battery _BIF method on some systems, 13061 resulting in no battery data being returned. 13062 13063 Added AcpiWalkResources interface to simplify parsing of resource 13064 lists. 13065 13066 Code and Data Size: Current core subsystem library sizes are shown 13067 below. These are the code and data sizes for the acpica.lib 13068 produced by the Microsoft Visual C++ 6.0 compiler, and these 13069 values do not include any ACPI driver or OSPM code. The debug 13070 version of the code includes the debug output trace mechanism and 13071 has a much larger code and data size. Note that these values will 13072 vary depending on the efficiency of the compiler and the compiler 13073 options used during generation. 13074 13075 Previous Release 13076 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 13077 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 13078 Current Release: 13079 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 13080 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 13081 13082 13083 2) Linux 13084 13085 S3 fixes (Ole Rohne) 13086 13087 Update ACPI PHP driver with to use new acpi_walk_resource API 13088 (Bjorn Helgaas) 13089 13090 Add S4BIOS support (Pavel Machek) 13091 13092 Map in entire table before performing checksum (John Stultz) 13093 13094 Expand the mem= cmdline to allow the specification of reserved and 13095 ACPI DATA blocks (Pavel Machek) 13096 13097 Never use ACPI on VISWS 13098 13099 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 13100 13101 Revert a change that allowed P_BLK lengths to be 4 or 5. This is 13102 causing us to think that some systems support C2 when they really 13103 don't. 13104 13105 Do not count processor objects for non-present CPUs (Thanks to 13106 Dominik Brodowski) 13107 13108 13109 3) iASL Compiler: 13110 13111 Fixed a problem where ASL include files could not be found and 13112 opened. 13113 13114 Added support for the _PDC reserved name. 13115 13116 13117 ---------------------------------------- 13118 22 January 2003. Summary of changes for version 20030122. 13119 13120 13121 1) ACPI CA Core Subsystem: 13122 13123 Added a check for constructs of the form: Store (Local0, Local0) 13124 where Local0 is not initialized. Apparently, some BIOS 13125 programmers believe that this is a NOOP. Since this store doesn't 13126 do anything anyway, the new prototype behavior will ignore this 13127 error. This is a case where we can relax the strict checking in 13128 the interpreter in the name of compatibility. 13129 13130 13131 2) Linux 13132 13133 The AcpiSrc Source Conversion Utility has been released with the 13134 Linux package for the first time. This is the utility that is 13135 used to convert the ACPI CA base source code to the Linux version. 13136 13137 (Both) Handle P_BLK lengths shorter than 6 more gracefully 13138 13139 (Both) Move more headers to include/acpi, and delete an unused 13140 header. 13141 13142 (Both) Move drivers/acpi/include directory to include/acpi 13143 13144 (Both) Boot functions don't use cmdline, so don't pass it around 13145 13146 (Both) Remove include of unused header (Adrian Bunk) 13147 13148 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 13149 the 13150 former now also includes the latter, acpiphp.h only needs the one, 13151 now. 13152 13153 (2.5) Make it possible to select method of bios restoring after S3 13154 resume. [=> no more ugly ifdefs] (Pavel Machek) 13155 13156 (2.5) Make proc write interfaces work (Pavel Machek) 13157 13158 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 13159 13160 (2.5) Break out ACPI Perf code into its own module, under cpufreq 13161 (Dominik Brodowski) 13162 13163 (2.4) S4BIOS support (Ducrot Bruno) 13164 13165 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 13166 Visinoni) 13167 13168 13169 3) iASL Compiler: 13170 13171 Added support to disassemble SSDT and PSDTs. 13172 13173 Implemented support to obtain SSDTs from the Windows registry if 13174 available. 13175 13176 13177 ---------------------------------------- 13178 09 January 2003. Summary of changes for version 20030109. 13179 13180 1) ACPI CA Core Subsystem: 13181 13182 Changed the behavior of the internal Buffer-to-String conversion 13183 function. The current ACPI specification states that the contents 13184 of the buffer are "converted to a string of two-character 13185 hexadecimal numbers, each separated by a space". Unfortunately, 13186 this definition is not backwards compatible with existing ACPI 1.0 13187 implementations (although the behavior was not defined in the ACPI 13188 1.0 specification). The new behavior simply copies data from the 13189 buffer to the string until a null character is found or the end of 13190 the buffer is reached. The new String object is always null 13191 terminated. This problem was seen during the generation of _BIF 13192 battery data where incorrect strings were returned for battery 13193 type, etc. This will also require an errata to the ACPI 13194 specification. 13195 13196 Renamed all instances of NATIVE_UINT and NATIVE_INT to 13197 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 13198 13199 Copyright in all module headers (both Linux and non-Linux) has be 13200 updated to 2003. 13201 13202 Code and Data Size: Current core subsystem library sizes are shown 13203 below. These are the code and data sizes for the acpica.lib 13204 produced by the Microsoft Visual C++ 6.0 compiler, and these 13205 values do not include any ACPI driver or OSPM code. The debug 13206 version of the code includes the debug output trace mechanism and 13207 has a much larger code and data size. Note that these values will 13208 vary depending on the efficiency of the compiler and the compiler 13209 options used during generation. 13210 13211 Previous Release 13212 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 13213 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 13214 Current Release: 13215 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 13216 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 13217 13218 13219 2) Linux 13220 13221 Fixed an oops on module insertion/removal (Matthew Tippett) 13222 13223 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 13224 13225 (2.5) Replace pr_debug (Randy Dunlap) 13226 13227 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 13228 13229 (Both) Eliminate spawning of thread from timer callback, in favor 13230 of schedule_work() 13231 13232 (Both) Show Lid status in /proc (Zdenek OGAR Skalak) 13233 13234 (Both) Added define for Fixed Function HW region (Matthew Wilcox) 13235 13236 (Both) Add missing statics to button.c (Pavel Machek) 13237 13238 Several changes have been made to the source code translation 13239 utility that generates the Linux Code in order to make the code 13240 more "Linux-like": 13241 13242 All typedefs on structs and unions have been removed in keeping 13243 with the Linux coding style. 13244 13245 Removed the non-Linux SourceSafe module revision number from each 13246 module header. 13247 13248 Completed major overhaul of symbols to be lowercased for linux. 13249 Doubled the number of symbols that are lowercased. 13250 13251 Fixed a problem where identifiers within procedure headers and 13252 within quotes were not fully lower cased (they were left with a 13253 starting capital.) 13254 13255 Some C macros whose only purpose is to allow the generation of 16- 13256 bit code are now completely removed in the Linux code, increasing 13257 readability and maintainability. 13258 13259 ---------------------------------------- 13260 13261 12 December 2002. Summary of changes for version 20021212. 13262 13263 13264 1) ACPI CA Core Subsystem: 13265 13266 Fixed a problem where the creation of a zero-length AML Buffer 13267 would cause a fault. 13268 13269 Fixed a problem where a Buffer object that pointed to a static AML 13270 buffer (in an ACPI table) could inadvertently be deleted, causing 13271 memory corruption. 13272 13273 Fixed a problem where a user buffer (passed in to the external 13274 ACPI CA interfaces) could be overwritten if the buffer was too 13275 small to complete the operation, causing memory corruption. 13276 13277 Fixed a problem in the Buffer-to-String conversion code where a 13278 string of length one was always returned, regardless of the size 13279 of the input Buffer object. 13280 13281 Removed the NATIVE_CHAR data type across the entire source due to 13282 lack of need and lack of consistent use. 13283 13284 Code and Data Size: Current core subsystem library sizes are shown 13285 below. These are the code and data sizes for the acpica.lib 13286 produced by the Microsoft Visual C++ 6.0 compiler, and these 13287 values do not include any ACPI driver or OSPM code. The debug 13288 version of the code includes the debug output trace mechanism and 13289 has a much larger code and data size. Note that these values will 13290 vary depending on the efficiency of the compiler and the compiler 13291 options used during generation. 13292 13293 Previous Release 13294 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 13295 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 13296 Current Release: 13297 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 13298 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 13299 13300 13301 ---------------------------------------- 13302 05 December 2002. Summary of changes for version 20021205. 13303 13304 1) ACPI CA Core Subsystem: 13305 13306 Fixed a problem where a store to a String or Buffer object could 13307 cause corruption of the DSDT if the object type being stored was 13308 the same as the target object type and the length of the object 13309 being stored was equal to or smaller than the original (existing) 13310 target object. This was seen to cause corruption of battery _BIF 13311 buffers if the _BIF method modified the buffer on the fly. 13312 13313 Fixed a problem where an internal error was generated if a control 13314 method invocation was used in an OperationRegion, Buffer, or 13315 Package declaration. This was caused by the deferred parsing of 13316 the control method and thus the deferred creation of the internal 13317 method object. The solution to this problem was to create the 13318 internal method object at the moment the method is encountered in 13319 the first pass - so that subsequent references to the method will 13320 able to obtain the required parameter count and thus properly 13321 parse the method invocation. This problem presented itself as an 13322 AE_AML_INTERNAL during the pass 1 parse phase during table load. 13323 13324 Fixed a problem where the internal String object copy routine did 13325 not always allocate sufficient memory for the target String object 13326 and caused memory corruption. This problem was seen to cause 13327 "Allocation already present in list!" errors as memory allocation 13328 became corrupted. 13329 13330 Implemented a new function for the evaluation of namespace objects 13331 that allows the specification of the allowable return object 13332 types. This simplifies a lot of code that checks for a return 13333 object of one or more specific objects returned from the 13334 evaluation (such as _STA, etc.) This may become and external 13335 function if it would be useful to ACPI-related drivers. 13336 13337 Completed another round of prefixing #defines with "ACPI_" for 13338 clarity. 13339 13340 Completed additional code restructuring to allow more modular 13341 linking for iASL compiler and AcpiExec. Several files were split 13342 creating new files. New files: nsparse.c dsinit.c evgpe.c 13343 13344 Implemented an abort mechanism to terminate an executing control 13345 method via the AML debugger. This feature is useful for debugging 13346 control methods that depend (wait) for specific hardware 13347 responses. 13348 13349 Code and Data Size: Current core subsystem library sizes are shown 13350 below. These are the code and data sizes for the acpica.lib 13351 produced by the Microsoft Visual C++ 6.0 compiler, and these 13352 values do not include any ACPI driver or OSPM code. The debug 13353 version of the code includes the debug output trace mechanism and 13354 has a much larger code and data size. Note that these values will 13355 vary depending on the efficiency of the compiler and the compiler 13356 options used during generation. 13357 13358 Previous Release 13359 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 13360 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 13361 Current Release: 13362 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 13363 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 13364 13365 13366 2) iASL Compiler/Disassembler 13367 13368 Fixed a compiler code generation problem for "Interrupt" Resource 13369 Descriptors. If specified in the ASL, the optional "Resource 13370 Source Index" and "Resource Source" fields were not inserted into 13371 the correct location within the AML resource descriptor, creating 13372 an invalid descriptor. 13373 13374 Fixed a disassembler problem for "Interrupt" resource descriptors. 13375 The optional "Resource Source Index" and "Resource Source" fields 13376 were ignored. 13377 13378 13379 ---------------------------------------- 13380 22 November 2002. Summary of changes for version 20021122. 13381 13382 13383 1) ACPI CA Core Subsystem: 13384 13385 Fixed a reported problem where an object stored to a Method Local 13386 or Arg was not copied to a new object during the store - the 13387 object pointer was simply copied to the Local/Arg. This caused 13388 all subsequent operations on the Local/Arg to also affect the 13389 original source of the store operation. 13390 13391 Fixed a problem where a store operation to a Method Local or Arg 13392 was not completed properly if the Local/Arg contained a reference 13393 (from RefOf) to a named field. The general-purpose store-to- 13394 namespace-node code is now used so that this case is handled 13395 automatically. 13396 13397 Fixed a problem where the internal object copy routine would cause 13398 a protection fault if the object being copied was a Package and 13399 contained either 1) a NULL package element or 2) a nested sub- 13400 package. 13401 13402 Fixed a problem with the GPE initialization that resulted from an 13403 ambiguity in the ACPI specification. One section of the 13404 specification states that both the address and length of the GPE 13405 block must be zero if the block is not supported. Another section 13406 implies that only the address need be zero if the block is not 13407 supported. The code has been changed so that both the address and 13408 the length must be non-zero to indicate a valid GPE block (i.e., 13409 if either the address or the length is zero, the GPE block is 13410 invalid.) 13411 13412 Code and Data Size: Current core subsystem library sizes are shown 13413 below. These are the code and data sizes for the acpica.lib 13414 produced by the Microsoft Visual C++ 6.0 compiler, and these 13415 values do not include any ACPI driver or OSPM code. The debug 13416 version of the code includes the debug output trace mechanism and 13417 has a much larger code and data size. Note that these values will 13418 vary depending on the efficiency of the compiler and the compiler 13419 options used during generation. 13420 13421 Previous Release 13422 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 13423 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 13424 Current Release: 13425 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 13426 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 13427 13428 13429 2) Linux 13430 13431 Cleaned up EC driver. Exported an external EC read/write 13432 interface. By going through this, other drivers (most notably 13433 sonypi) will be able to serialize access to the EC. 13434 13435 13436 3) iASL Compiler/Disassembler 13437 13438 Implemented support to optionally generate include files for both 13439 ASM and C (the -i switch). This simplifies BIOS development by 13440 automatically creating include files that contain external 13441 declarations for the symbols that are created within the 13442 13443 (optionally generated) ASM and C AML source files. 13444 13445 13446 ---------------------------------------- 13447 15 November 2002. Summary of changes for version 20021115. 13448 13449 1) ACPI CA Core Subsystem: 13450 13451 Fixed a memory leak problem where an error during resolution of 13452 13453 method arguments during a method invocation from another method 13454 failed to cleanup properly by deleting all successfully resolved 13455 argument objects. 13456 13457 Fixed a problem where the target of the Index() operator was not 13458 correctly constructed if the source object was a package. This 13459 problem has not been detected because the use of a target operand 13460 with Index() is very rare. 13461 13462 Fixed a problem with the Index() operator where an attempt was 13463 made to delete the operand objects twice. 13464 13465 Fixed a problem where an attempt was made to delete an operand 13466 twice during execution of the CondRefOf() operator if the target 13467 did not exist. 13468 13469 Implemented the first of perhaps several internal create object 13470 functions that create and initialize a specific object type. This 13471 consolidates duplicated code wherever the object is created, thus 13472 shrinking the size of the subsystem. 13473 13474 Implemented improved debug/error messages for errors that occur 13475 during nested method invocations. All executing method pathnames 13476 are displayed (with the error) as the call stack is unwound - thus 13477 simplifying debug. 13478 13479 Fixed a problem introduced in the 10/02 release that caused 13480 premature deletion of a buffer object if a buffer was used as an 13481 ASL operand where an integer operand is required (Thus causing an 13482 implicit object conversion from Buffer to Integer.) The change in 13483 the 10/02 release was attempting to fix a memory leak (albeit 13484 incorrectly.) 13485 13486 Code and Data Size: Current core subsystem library sizes are shown 13487 below. These are the code and data sizes for the acpica.lib 13488 produced by the Microsoft Visual C++ 6.0 compiler, and these 13489 values do not include any ACPI driver or OSPM code. The debug 13490 version of the code includes the debug output trace mechanism and 13491 has a much larger code and data size. Note that these values will 13492 vary depending on the efficiency of the compiler and the compiler 13493 options used during generation. 13494 13495 Previous Release 13496 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 13497 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 13498 Current Release: 13499 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 13500 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 13501 13502 13503 2) Linux 13504 13505 Changed the implementation of the ACPI semaphores to use down() 13506 instead of down_interruptable(). It is important that the 13507 execution of ACPI control methods not be interrupted by signals. 13508 Methods must run to completion, or the system may be left in an 13509 unknown/unstable state. 13510 13511 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 13512 (Shawn Starr) 13513 13514 13515 3) iASL Compiler/Disassembler 13516 13517 13518 Changed the default location of output files. All output files 13519 are now placed in the current directory by default instead of in 13520 the directory of the source file. This change may affect some 13521 existing makefiles, but it brings the behavior of the compiler in 13522 line with other similar tools. The location of the output files 13523 can be overridden with the -p command line switch. 13524 13525 13526 ---------------------------------------- 13527 11 November 2002. Summary of changes for version 20021111. 13528 13529 13530 0) ACPI Specification 2.0B is released and is now available at: 13531 http://www.acpi.info/index.html 13532 13533 13534 1) ACPI CA Core Subsystem: 13535 13536 Implemented support for the ACPI 2.0 SMBus Operation Regions. 13537 This includes the early detection and handoff of the request to 13538 the SMBus region handler (avoiding all of the complex field 13539 support code), and support for the bidirectional return packet 13540 from an SMBus write operation. This paves the way for the 13541 development of SMBus drivers in each host operating system. 13542 13543 Fixed a problem where the semaphore WAIT_FOREVER constant was 13544 defined as 32 bits, but must be 16 bits according to the ACPI 13545 specification. This had the side effect of causing ASL 13546 Mutex/Event timeouts even though the ASL code requested a wait 13547 forever. Changed all internal references to the ACPI timeout 13548 parameter to 16 bits to prevent future problems. Changed the name 13549 of WAIT_FOREVER to ACPI_WAIT_FOREVER. 13550 13551 Code and Data Size: Current core subsystem library sizes are shown 13552 below. These are the code and data sizes for the acpica.lib 13553 produced by the Microsoft Visual C++ 6.0 compiler, and these 13554 values do not include any ACPI driver or OSPM code. The debug 13555 version of the code includes the debug output trace mechanism and 13556 has a much larger code and data size. Note that these values will 13557 vary depending on the efficiency of the compiler and the compiler 13558 options used during generation. 13559 13560 Previous Release 13561 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 13562 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 13563 Current Release: 13564 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 13565 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 13566 13567 13568 2) Linux 13569 13570 Module loading/unloading fixes (John Cagle) 13571 13572 13573 3) iASL Compiler/Disassembler 13574 13575 Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 13576 13577 Implemented support for the disassembly of all SMBus protocol 13578 keywords (SMBQuick, SMBWord, etc.) 13579 13580 ---------------------------------------- 13581 01 November 2002. Summary of changes for version 20021101. 13582 13583 13584 1) ACPI CA Core Subsystem: 13585 13586 Fixed a problem where platforms that have a GPE1 block but no GPE0 13587 block were not handled correctly. This resulted in a "GPE 13588 overlap" error message. GPE0 is no longer required. 13589 13590 Removed code added in the previous release that inserted nodes 13591 into the namespace in alphabetical order. This caused some side- 13592 effects on various machines. The root cause of the problem is 13593 still under investigation since in theory, the internal ordering 13594 of the namespace nodes should not matter. 13595 13596 13597 Enhanced error reporting for the case where a named object is not 13598 found during control method execution. The full ACPI namepath 13599 (name reference) of the object that was not found is displayed in 13600 this case. 13601 13602 Note: as a result of the overhaul of the namespace object types in 13603 the previous release, the namespace nodes for the predefined 13604 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 13605 instead of ACPI_TYPE_ANY. This simplifies the namespace 13606 management code but may affect code that walks the namespace tree 13607 looking for specific object types. 13608 13609 Code and Data Size: Current core subsystem library sizes are shown 13610 below. These are the code and data sizes for the acpica.lib 13611 produced by the Microsoft Visual C++ 6.0 compiler, and these 13612 values do not include any ACPI driver or OSPM code. The debug 13613 version of the code includes the debug output trace mechanism and 13614 has a much larger code and data size. Note that these values will 13615 vary depending on the efficiency of the compiler and the compiler 13616 options used during generation. 13617 13618 Previous Release 13619 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 13620 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 13621 Current Release: 13622 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 13623 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 13624 13625 13626 2) Linux 13627 13628 Fixed a problem introduced in the previous release where the 13629 Processor and Thermal objects were not recognized and installed in 13630 /proc. This was related to the scope type change described above. 13631 13632 13633 3) iASL Compiler/Disassembler 13634 13635 Implemented the -g option to get all of the required ACPI tables 13636 from the registry and save them to files (Windows version of the 13637 compiler only.) The required tables are the FADT, FACS, and DSDT. 13638 13639 Added ACPI table checksum validation during table disassembly in 13640 order to catch corrupted tables. 13641 13642 13643 ---------------------------------------- 13644 22 October 2002. Summary of changes for version 20021022. 13645 13646 1) ACPI CA Core Subsystem: 13647 13648 Implemented a restriction on the Scope operator that the target 13649 must already exist in the namespace at the time the operator is 13650 encountered (during table load or method execution). In other 13651 words, forward references are not allowed and Scope() cannot 13652 create a new object. This changes the previous behavior where the 13653 interpreter would create the name if not found. This new behavior 13654 correctly enables the search-to-root algorithm during namespace 13655 lookup of the target name. Because of this upsearch, this fixes 13656 the known Compaq _SB_.OKEC problem and makes both the AML 13657 interpreter and iASL compiler compatible with other ACPI 13658 implementations. 13659 13660 Completed a major overhaul of the internal ACPI object types for 13661 the ACPI Namespace and the associated operand objects. Many of 13662 these types had become obsolete with the introduction of the two- 13663 pass namespace load. This cleanup simplifies the code and makes 13664 the entire namespace load mechanism much clearer and easier to 13665 understand. 13666 13667 Improved debug output for tracking scope opening/closing to help 13668 diagnose scoping issues. The old scope name as well as the new 13669 scope name are displayed. Also improved error messages for 13670 problems with ASL Mutex objects and error messages for GPE 13671 problems. 13672 13673 Cleaned up the namespace dump code, removed obsolete code. 13674 13675 All string output (for all namespace/object dumps) now uses the 13676 common ACPI string output procedure which handles escapes properly 13677 and does not emit non-printable characters. 13678 13679 Fixed some issues with constants in the 64-bit version of the 13680 local C library (utclib.c) 13681 13682 13683 2) Linux 13684 13685 EC Driver: No longer attempts to acquire the Global Lock at 13686 interrupt level. 13687 13688 13689 3) iASL Compiler/Disassembler 13690 13691 Implemented ACPI 2.0B grammar change that disallows all Type 1 and 13692 2 opcodes outside of a control method. This means that the 13693 "executable" operators (versus the "namespace" operators) cannot 13694 be used at the table level; they can only be used within a control 13695 method. 13696 13697 Implemented the restriction on the Scope() operator where the 13698 target must already exist in the namespace at the time the 13699 operator is encountered (during ASL compilation). In other words, 13700 forward references are not allowed and Scope() cannot create a new 13701 object. This makes the iASL compiler compatible with other ACPI 13702 implementations and makes the Scope() implementation adhere to the 13703 ACPI specification. 13704 13705 Fixed a problem where namepath optimization for the Alias operator 13706 was optimizing the wrong path (of the two namepaths.) This caused 13707 a "Missing alias link" error message. 13708 13709 Fixed a problem where an "unknown reserved name" warning could be 13710 incorrectly generated for names like "_SB" when the trailing 13711 underscore is not used in the original ASL. 13712 13713 Fixed a problem where the reserved name check did not handle 13714 NamePaths with multiple NameSegs correctly. The first nameseg of 13715 the NamePath was examined instead of the last NameSeg. 13716 13717 13718 ---------------------------------------- 13719 13720 02 October 2002. Summary of changes for this release. 13721 13722 13723 1) ACPI CA Core Subsystem version 20021002: 13724 13725 Fixed a problem where a store/copy of a string to an existing 13726 string did not always set the string length properly in the String 13727 object. 13728 13729 Fixed a reported problem with the ToString operator where the 13730 behavior was identical to the ToHexString operator instead of just 13731 simply converting a raw buffer to a string data type. 13732 13733 Fixed a problem where CopyObject and the other "explicit" 13734 conversion operators were not updating the internal namespace node 13735 type as part of the store operation. 13736 13737 Fixed a memory leak during implicit source operand conversion 13738 where the original object was not deleted if it was converted to a 13739 new object of a different type. 13740 13741 Enhanced error messages for all problems associated with namespace 13742 lookups. Common procedure generates and prints the lookup name as 13743 well as the formatted status. 13744 13745 Completed implementation of a new design for the Alias support 13746 within the namespace. The existing design did not handle the case 13747 where a new object was assigned to one of the two names due to the 13748 use of an explicit conversion operator, resulting in the two names 13749 pointing to two different objects. The new design simply points 13750 the Alias name to the original name node - not to the object. 13751 This results in a level of indirection that must be handled in the 13752 name resolution mechanism. 13753 13754 Code and Data Size: Current core subsystem library sizes are shown 13755 below. These are the code and data sizes for the acpica.lib 13756 produced by the Microsoft Visual C++ 6.0 compiler, and these 13757 values do not include any ACPI driver or OSPM code. The debug 13758 version of the code includes the debug output trace mechanism and 13759 has a larger code and data size. Note that these values will vary 13760 depending on the efficiency of the compiler and the compiler 13761 options used during generation. 13762 13763 Previous Release 13764 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 13765 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 13766 Current Release: 13767 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 13768 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 13769 13770 13771 2) Linux 13772 13773 Initialize thermal driver's timer before it is used. (Knut 13774 Neumann) 13775 13776 Allow handling negative celsius values. (Kochi Takayoshi) 13777 13778 Fix thermal management and make trip points. R/W (Pavel Machek) 13779 13780 Fix /proc/acpi/sleep. (P. Christeas) 13781 13782 IA64 fixes. (David Mosberger) 13783 13784 Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 13785 13786 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 13787 Brodowski) 13788 13789 13790 3) iASL Compiler/Disassembler 13791 13792 Clarified some warning/error messages. 13793 13794 13795 ---------------------------------------- 13796 18 September 2002. Summary of changes for this release. 13797 13798 13799 1) ACPI CA Core Subsystem version 20020918: 13800 13801 Fixed a reported problem with reference chaining (via the Index() 13802 and RefOf() operators) in the ObjectType() and SizeOf() operators. 13803 The definition of these operators includes the dereferencing of 13804 all chained references to return information on the base object. 13805 13806 Fixed a problem with stores to indexed package elements - the 13807 existing code would not complete the store if an "implicit 13808 conversion" was not performed. In other words, if the existing 13809 object (package element) was to be replaced completely, the code 13810 didn't handle this case. 13811 13812 Relaxed typechecking on the ASL "Scope" operator to allow the 13813 target name to refer to an object of type Integer, String, or 13814 Buffer, in addition to the scoping object types (Device, 13815 predefined Scopes, Processor, PowerResource, and ThermalZone.) 13816 This allows existing AML code that has workarounds for a bug in 13817 Windows to function properly. A warning is issued, however. This 13818 affects both the AML interpreter and the iASL compiler. Below is 13819 an example of this type of ASL code: 13820 13821 Name(DEB,0x00) 13822 Scope(DEB) 13823 { 13824 13825 Fixed some reported problems with 64-bit integer support in the 13826 local implementation of C library functions (clib.c) 13827 13828 13829 2) Linux 13830 13831 Use ACPI fix map region instead of IOAPIC region, since it is 13832 undefined in non-SMP. 13833 13834 Ensure that the SCI has the proper polarity and trigger, even on 13835 systems that do not have an interrupt override entry in the MADT. 13836 13837 2.5 big driver reorganization (Pat Mochel) 13838 13839 Use early table mapping code from acpitable.c (Andi Kleen) 13840 13841 New blacklist entries (Andi Kleen) 13842 13843 Blacklist improvements. Split blacklist code out into a separate 13844 file. Move checking the blacklist to very early. Previously, we 13845 would use ACPI tables, and then halfway through init, check the 13846 blacklist -- too late. Now, it's early enough to completely fall- 13847 back to non-ACPI. 13848 13849 13850 3) iASL Compiler/Disassembler version 20020918: 13851 13852 Fixed a problem where the typechecking code didn't know that an 13853 alias could point to a method. In other words, aliases were not 13854 being dereferenced during typechecking. 13855 13856 13857 ---------------------------------------- 13858 29 August 2002. Summary of changes for this release. 13859 13860 1) ACPI CA Core Subsystem Version 20020829: 13861 13862 If the target of a Scope() operator already exists, it must be an 13863 object type that actually opens a scope -- such as a Device, 13864 Method, Scope, etc. This is a fatal runtime error. Similar error 13865 check has been added to the iASL compiler also. 13866 13867 Tightened up the namespace load to disallow multiple names in the 13868 same scope. This previously was allowed if both objects were of 13869 the same type. (i.e., a lookup was the same as entering a new 13870 name). 13871 13872 13873 2) Linux 13874 13875 Ensure that the ACPI interrupt has the proper trigger and 13876 polarity. 13877 13878 local_irq_disable is extraneous. (Matthew Wilcox) 13879 13880 Make "acpi=off" actually do what it says, and not use the ACPI 13881 interpreter *or* the tables. 13882 13883 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 13884 Takayoshi) 13885 13886 13887 3) iASL Compiler/Disassembler Version 20020829: 13888 13889 Implemented namepath optimization for name declarations. For 13890 example, a declaration like "Method (\_SB_.ABCD)" would get 13891 optimized to "Method (ABCD)" if the declaration is within the 13892 \_SB_ scope. This optimization is in addition to the named 13893 reference path optimization first released in the previous 13894 version. This would seem to complete all possible optimizations 13895 for namepaths within the ASL/AML. 13896 13897 If the target of a Scope() operator already exists, it must be an 13898 object type that actually opens a scope -- such as a Device, 13899 Method, Scope, etc. 13900 13901 Implemented a check and warning for unreachable code in the same 13902 block below a Return() statement. 13903 13904 Fixed a problem where the listing file was not generated if the 13905 compiler aborted if the maximum error count was exceeded (200). 13906 13907 Fixed a problem where the typechecking of method return values was 13908 broken. This includes the check for a return value when the 13909 method is invoked as a TermArg (a return value is expected.) 13910 13911 Fixed a reported problem where EOF conditions during a quoted 13912 string or comment caused a fault. 13913 13914 13915 ---------------------------------------- 13916 15 August 2002. Summary of changes for this release. 13917 13918 1) ACPI CA Core Subsystem Version 20020815: 13919 13920 Fixed a reported problem where a Store to a method argument that 13921 contains a reference did not perform the indirect store correctly. 13922 This problem was created during the conversion to the new 13923 reference object model - the indirect store to a method argument 13924 code was not updated to reflect the new model. 13925 13926 Reworked the ACPI mode change code to better conform to ACPI 2.0, 13927 handle corner cases, and improve code legibility (Kochi Takayoshi) 13928 13929 Fixed a problem with the pathname parsing for the carat (^) 13930 prefix. The heavy use of the carat operator by the new namepath 13931 optimization in the iASL compiler uncovered a problem with the AML 13932 interpreter handling of this prefix. In the case where one or 13933 more carats precede a single nameseg, the nameseg was treated as 13934 standalone and the search rule (to root) was inadvertently 13935 applied. This could cause both the iASL compiler and the 13936 interpreter to find the wrong object or to miss the error that 13937 should occur if the object does not exist at that exact pathname. 13938 13939 Found and fixed the problem where the HP Pavilion DSDT would not 13940 load. This was a relatively minor tweak to the table loading code 13941 (a problem caused by the unexpected encounter with a method 13942 invocation not within a control method), but it does not solve the 13943 overall issue of the execution of AML code at the table level. 13944 This investigation is still ongoing. 13945 13946 Code and Data Size: Current core subsystem library sizes are shown 13947 below. These are the code and data sizes for the acpica.lib 13948 produced by the Microsoft Visual C++ 6.0 compiler, and these 13949 values do not include any ACPI driver or OSPM code. The debug 13950 version of the code includes the debug output trace mechanism and 13951 has a larger code and data size. Note that these values will vary 13952 depending on the efficiency of the compiler and the compiler 13953 options used during generation. 13954 13955 Previous Release 13956 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 13957 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 13958 Current Release: 13959 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 13960 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 13961 13962 13963 2) Linux 13964 13965 Remove redundant slab.h include (Brad Hards) 13966 13967 Fix several bugs in thermal.c (Herbert Nachtnebel) 13968 13969 Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 13970 13971 Change acpi_system_suspend to use updated irq functions (Pavel 13972 Machek) 13973 13974 Export acpi_get_firmware_table (Matthew Wilcox) 13975 13976 Use proper root proc entry for ACPI (Kochi Takayoshi) 13977 13978 Fix early-boot table parsing (Bjorn Helgaas) 13979 13980 13981 3) iASL Compiler/Disassembler 13982 13983 Reworked the compiler options to make them more consistent and to 13984 use two-letter options where appropriate. We were running out of 13985 sensible letters. This may break some makefiles, so check the 13986 current options list by invoking the compiler with no parameters. 13987 13988 Completed the design and implementation of the ASL namepath 13989 optimization option for the compiler. This option optimizes all 13990 references to named objects to the shortest possible path. The 13991 first attempt tries to utilize a single nameseg (4 characters) and 13992 the "search-to-root" algorithm used by the interpreter. If that 13993 cannot be used (because either the name is not in the search path 13994 or there is a conflict with another object with the same name), 13995 the pathname is optimized using the carat prefix (usually a 13996 shorter string than specifying the entire path from the root.) 13997 13998 Implemented support to obtain the DSDT from the Windows registry 13999 (when the disassembly option is specified with no input file). 14000 Added this code as the implementation for AcpiOsTableOverride in 14001 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 14002 utility) to scan memory for the DSDT to the AcpiOsTableOverride 14003 function in the DOS OSL to make the disassembler truly OS 14004 independent. 14005 14006 Implemented a new option to disassemble and compile in one step. 14007 When used without an input filename, this option will grab the 14008 DSDT from the local machine, disassemble it, and compile it in one 14009 step. 14010 14011 Added a warning message for invalid escapes (a backslash followed 14012 by any character other than the allowable escapes). This catches 14013 the quoted string error "\_SB_" (which should be "\\_SB_" ). 14014 14015 Also, there are numerous instances in the ACPI specification where 14016 this error occurs. 14017 14018 Added a compiler option to disable all optimizations. This is 14019 basically the "compatibility mode" because by using this option, 14020 the AML code will come out exactly the same as other ASL 14021 compilers. 14022 14023 Added error messages for incorrectly ordered dependent resource 14024 functions. This includes: missing EndDependentFn macro at end of 14025 dependent resource list, nested dependent function macros (both 14026 start and end), and missing StartDependentFn macro. These are 14027 common errors that should be caught at compile time. 14028 14029 Implemented _OSI support for the disassembler and compiler. _OSI 14030 must be included in the namespace for proper disassembly (because 14031 the disassembler must know the number of arguments.) 14032 14033 Added an "optimization" message type that is optional (off by 14034 default). This message is used for all optimizations - including 14035 constant folding, integer optimization, and namepath optimization. 14036 14037 ---------------------------------------- 14038 25 July 2002. Summary of changes for this release. 14039 14040 14041 1) ACPI CA Core Subsystem Version 20020725: 14042 14043 The AML Disassembler has been enhanced to produce compilable ASL 14044 code and has been integrated into the iASL compiler (see below) as 14045 well as the single-step disassembly for the AML debugger and the 14046 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 14047 resource templates and macros are fully supported. The 14048 disassembler has been tested on over 30 different AML files, 14049 producing identical AML when the resulting disassembled ASL file 14050 is recompiled with the same ASL compiler. 14051 14052 Modified the Resource Manager to allow zero interrupts and zero 14053 dma channels during the GetCurrentResources call. This was 14054 causing problems on some platforms. 14055 14056 Added the AcpiOsRedirectOutput interface to the OSL to simplify 14057 output redirection for the AcpiOsPrintf and AcpiOsVprintf 14058 interfaces. 14059 14060 Code and Data Size: Current core subsystem library sizes are shown 14061 below. These are the code and data sizes for the acpica.lib 14062 produced by the Microsoft Visual C++ 6.0 compiler, and these 14063 values do not include any ACPI driver or OSPM code. The debug 14064 version of the code includes the debug output trace mechanism and 14065 has a larger code and data size. Note that these values will vary 14066 depending on the efficiency of the compiler and the compiler 14067 options used during generation. 14068 14069 Previous Release 14070 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 14071 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 14072 Current Release: 14073 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 14074 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 14075 14076 14077 2) Linux 14078 14079 Fixed a panic in the EC driver (Dominik Brodowski) 14080 14081 Implemented checksum of the R/XSDT itself during Linux table scan 14082 (Richard Schaal) 14083 14084 14085 3) iASL compiler 14086 14087 The AML disassembler is integrated into the compiler. The "-d" 14088 option invokes the disassembler to completely disassemble an 14089 input AML file, producing as output a text ASL file with the 14090 extension ".dsl" (to avoid name collisions with existing .asl 14091 source files.) A future enhancement will allow the disassembler 14092 to obtain the BIOS DSDT from the registry under Windows. 14093 14094 Fixed a problem with the VendorShort and VendorLong resource 14095 descriptors where an invalid AML sequence was created. 14096 14097 Implemented a fix for BufferData term in the ASL parser. It was 14098 inadvertently defined twice, allowing invalid syntax to pass and 14099 causing reduction conflicts. 14100 14101 Fixed a problem where the Ones opcode could get converted to a 14102 value of zero if "Ones" was used where a byte, word or dword value 14103 was expected. The 64-bit value is now truncated to the correct 14104 size with the correct value. 14105 14106 14107 14108 ---------------------------------------- 14109 02 July 2002. Summary of changes for this release. 14110 14111 14112 1) ACPI CA Core Subsystem Version 20020702: 14113 14114 The Table Manager code has been restructured to add several new 14115 features. Tables that are not required by the core subsystem 14116 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 14117 validated in any way and are returned from AcpiGetFirmwareTable if 14118 requested. The AcpiOsTableOverride interface is now called for 14119 each table that is loaded by the subsystem in order to allow the 14120 host to override any table it chooses. Previously, only the DSDT 14121 could be overridden. Added one new files, tbrsdt.c and 14122 tbgetall.c. 14123 14124 Fixed a problem with the conversion of internal package objects to 14125 external objects (when a package is returned from a control 14126 method.) The return buffer length was set to zero instead of the 14127 proper length of the package object. 14128 14129 Fixed a reported problem with the use of the RefOf and DeRefOf 14130 operators when passing reference arguments to control methods. A 14131 new type of Reference object is used internally for references 14132 produced by the RefOf operator. 14133 14134 Added additional error messages in the Resource Manager to explain 14135 AE_BAD_DATA errors when they occur during resource parsing. 14136 14137 Split the AcpiEnableSubsystem into two primitives to enable a 14138 finer granularity initialization sequence. These two calls should 14139 be called in this order: AcpiEnableSubsystem (flags), 14140 AcpiInitializeObjects (flags). The flags parameter remains the 14141 same. 14142 14143 14144 2) Linux 14145 14146 Updated the ACPI utilities module to understand the new style of 14147 fully resolved package objects that are now returned from the core 14148 subsystem. This eliminates errors of the form: 14149 14150 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 14151 acpi_utils-0430 [145] acpi_evaluate_reference: 14152 Invalid element in package (not a device reference) 14153 14154 The method evaluation utility uses the new buffer allocation 14155 scheme instead of calling AcpiEvaluate Object twice. 14156 14157 Added support for ECDT. This allows the use of the Embedded 14158 14159 Controller before the namespace has been fully initialized, which 14160 is necessary for ACPI 2.0 support, and for some laptops to 14161 initialize properly. (Laptops using ECDT are still rare, so only 14162 limited testing was performed of the added functionality.) 14163 14164 Fixed memory leaks in the EC driver. 14165 14166 Eliminated a brittle code structure in acpi_bus_init(). 14167 14168 Eliminated the acpi_evaluate() helper function in utils.c. It is 14169 no longer needed since acpi_evaluate_object can optionally 14170 allocate memory for the return object. 14171 14172 Implemented fix for keyboard hang when getting battery readings on 14173 some systems (Stephen White) 14174 14175 PCI IRQ routing update (Dominik Brodowski) 14176 14177 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 14178 support 14179 14180 ---------------------------------------- 14181 11 June 2002. Summary of changes for this release. 14182 14183 14184 1) ACPI CA Core Subsystem Version 20020611: 14185 14186 Fixed a reported problem where constants such as Zero and One 14187 appearing within _PRT packages were not handled correctly within 14188 the resource manager code. Originally reported against the ASL 14189 compiler because the code generator now optimizes integers to 14190 their minimal AML representation (i.e. AML constants if possible.) 14191 The _PRT code now handles all AML constant opcodes correctly 14192 (Zero, One, Ones, Revision). 14193 14194 Fixed a problem with the Concatenate operator in the AML 14195 interpreter where a buffer result object was incorrectly marked as 14196 not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 14197 14198 All package sub-objects are now fully resolved before they are 14199 returned from the external ACPI interfaces. This means that name 14200 strings are resolved to object handles, and constant operators 14201 (Zero, One, Ones, Revision) are resolved to Integers. 14202 14203 Implemented immediate resolution of the AML Constant opcodes 14204 (Zero, One, Ones, Revision) to Integer objects upon detection 14205 within the AML stream. This has simplified and reduced the 14206 generated code size of the subsystem by eliminating about 10 14207 switch statements for these constants (which previously were 14208 contained in Reference objects.) The complicating issues are that 14209 the Zero opcode is used as a "placeholder" for unspecified 14210 optional target operands and stores to constants are defined to be 14211 no-ops. 14212 14213 Code and Data Size: Current core subsystem library sizes are shown 14214 below. These are the code and data sizes for the acpica.lib 14215 produced by the Microsoft Visual C++ 6.0 compiler, and these 14216 values do not include any ACPI driver or OSPM code. The debug 14217 version of the code includes the debug output trace mechanism and 14218 has a larger code and data size. Note that these values will vary 14219 depending on the efficiency of the compiler and the compiler 14220 options used during generation. 14221 14222 Previous Release 14223 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 14224 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 14225 Current Release: 14226 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 14227 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 14228 14229 14230 2) Linux 14231 14232 14233 Added preliminary support for obtaining _TRA data for PCI root 14234 bridges (Bjorn Helgaas). 14235 14236 14237 3) iASL Compiler Version X2046: 14238 14239 Fixed a problem where the "_DDN" reserved name was defined to be a 14240 control method with one argument. There are no arguments, and 14241 _DDN does not have to be a control method. 14242 14243 Fixed a problem with the Linux version of the compiler where the 14244 source lines printed with error messages were the wrong lines. 14245 This turned out to be the "LF versus CR/LF" difference between 14246 Windows and Unix. This appears to be the longstanding issue 14247 concerning listing output and error messages. 14248 14249 Fixed a problem with the Linux version of compiler where opcode 14250 names within error messages were wrong. This was caused by a 14251 slight difference in the output of the Flex tool on Linux versus 14252 Windows. 14253 14254 Fixed a problem with the Linux compiler where the hex output files 14255 contained some garbage data caused by an internal buffer overrun. 14256 14257 14258 ---------------------------------------- 14259 17 May 2002. Summary of changes for this release. 14260 14261 14262 1) ACPI CA Core Subsystem Version 20020517: 14263 14264 Implemented a workaround to an BIOS bug discovered on the HP 14265 OmniBook where the FADT revision number and the table size are 14266 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 14267 behavior is to fallback to using only the ACPI 1.0 fields of the 14268 FADT if the table is too small to be a ACPI 2.0 table as claimed 14269 by the revision number. Although this is a BIOS bug, this is a 14270 case where the workaround is simple enough and with no side 14271 effects, so it seemed prudent to add it. A warning message is 14272 issued, however. 14273 14274 Implemented minimum size checks for the fixed-length ACPI tables - 14275 - the FADT and FACS, as well as consistency checks between the 14276 revision number and the table size. 14277 14278 Fixed a reported problem in the table override support where the 14279 new table pointer was incorrectly treated as a physical address 14280 instead of a logical address. 14281 14282 Eliminated the use of the AE_AML_ERROR exception and replaced it 14283 with more descriptive codes. 14284 14285 Fixed a problem where an exception would occur if an ASL Field was 14286 defined with no named Field Units underneath it (used by some 14287 index fields). 14288 14289 Code and Data Size: Current core subsystem library sizes are shown 14290 below. These are the code and data sizes for the acpica.lib 14291 produced by the Microsoft Visual C++ 6.0 compiler, and these 14292 values do not include any ACPI driver or OSPM code. The debug 14293 version of the code includes the debug output trace mechanism and 14294 has a larger code and data size. Note that these values will vary 14295 depending on the efficiency of the compiler and the compiler 14296 options used during generation. 14297 14298 Previous Release 14299 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 14300 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 14301 Current Release: 14302 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 14303 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 14304 14305 14306 14307 2) Linux 14308 14309 Much work done on ACPI init (MADT and PCI IRQ routing support). 14310 (Paul D. and Dominik Brodowski) 14311 14312 Fix PCI IRQ-related panic on boot (Sam Revitch) 14313 14314 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 14315 14316 Fix "MHz" typo (Dominik Brodowski) 14317 14318 Fix RTC year 2000 issue (Dominik Brodowski) 14319 14320 Preclude multiple button proc entries (Eric Brunet) 14321 14322 Moved arch-specific code out of include/platform/aclinux.h 14323 14324 3) iASL Compiler Version X2044: 14325 14326 Implemented error checking for the string used in the EISAID macro 14327 (Usually used in the definition of the _HID object.) The code now 14328 strictly enforces the PnP format - exactly 7 characters, 3 14329 uppercase letters and 4 hex digits. 14330 14331 If a raw string is used in the definition of the _HID object 14332 (instead of the EISAID macro), the string must contain all 14333 alphanumeric characters (e.g., "*PNP0011" is not allowed because 14334 of the asterisk.) 14335 14336 Implemented checking for invalid use of ACPI reserved names for 14337 most of the name creation operators (Name, Device, Event, Mutex, 14338 OperationRegion, PowerResource, Processor, and ThermalZone.) 14339 Previously, this check was only performed for control methods. 14340 14341 Implemented an additional check on the Name operator to emit an 14342 error if a reserved name that must be implemented in ASL as a 14343 control method is used. We know that a reserved name must be a 14344 method if it is defined with input arguments. 14345 14346 The warning emitted when a namespace object reference is not found 14347 during the cross reference phase has been changed into an error. 14348 The "External" directive should be used for names defined in other 14349 modules. 14350 14351 14352 4) Tools and Utilities 14353 14354 The 16-bit tools (adump16 and aexec16) have been regenerated and 14355 tested. 14356 14357 Fixed a problem with the output of both acpidump and adump16 where 14358 the indentation of closing parentheses and brackets was not 14359 14360 aligned properly with the parent block. 14361 14362 14363 ---------------------------------------- 14364 03 May 2002. Summary of changes for this release. 14365 14366 14367 1) ACPI CA Core Subsystem Version 20020503: 14368 14369 Added support a new OSL interface that allows the host operating 14370 14371 system software to override the DSDT found in the firmware - 14372 AcpiOsTableOverride. With this interface, the OSL can examine the 14373 version of the firmware DSDT and replace it with a different one 14374 if desired. 14375 14376 Added new external interfaces for accessing ACPI registers from 14377 device drivers and other system software - AcpiGetRegister and 14378 AcpiSetRegister. This was simply an externalization of the 14379 existing AcpiHwBitRegister interfaces. 14380 14381 Fixed a regression introduced in the previous build where the 14382 ASL/AML CreateField operator always returned an error, 14383 "destination must be a NS Node". 14384 14385 Extended the maximum time (before failure) to successfully enable 14386 ACPI mode to 3 seconds. 14387 14388 Code and Data Size: Current core subsystem library sizes are shown 14389 below. These are the code and data sizes for the acpica.lib 14390 produced by the Microsoft Visual C++ 6.0 compiler, and these 14391 values do not include any ACPI driver or OSPM code. The debug 14392 version of the code includes the debug output trace mechanism and 14393 has a larger code and data size. Note that these values will vary 14394 depending on the efficiency of the compiler and the compiler 14395 options used during generation. 14396 14397 Previous Release 14398 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 14399 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 14400 Current Release: 14401 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 14402 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 14403 14404 14405 2) Linux 14406 14407 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 14408 free. While 3 out of 4 of our in-house systems work fine, the last 14409 one still hangs when testing the LAPIC timer. 14410 14411 Renamed many files in 2.5 kernel release to omit "acpi_" from the 14412 name. 14413 14414 Added warning on boot for Presario 711FR. 14415 14416 Sleep improvements (Pavel Machek) 14417 14418 ACPI can now be built without CONFIG_PCI enabled. 14419 14420 IA64: Fixed memory map functions (JI Lee) 14421 14422 14423 3) iASL Compiler Version X2043: 14424 14425 Added support to allow the compiler to be integrated into the MS 14426 VC++ development environment for one-button compilation of single 14427 files or entire projects -- with error-to-source-line mapping. 14428 14429 Implemented support for compile-time constant folding for the 14430 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 14431 specification. This allows the ASL writer to use expressions 14432 instead of Integer/Buffer/String constants in terms that must 14433 evaluate to constants at compile time and will also simplify the 14434 emitted AML in any such sub-expressions that can be folded 14435 (evaluated at compile-time.) This increases the size of the 14436 compiler significantly because a portion of the ACPI CA AML 14437 interpreter is included within the compiler in order to pre- 14438 evaluate constant expressions. 14439 14440 14441 Fixed a problem with the "Unicode" ASL macro that caused the 14442 compiler to fault. (This macro is used in conjunction with the 14443 _STR reserved name.) 14444 14445 Implemented an AML opcode optimization to use the Zero, One, and 14446 Ones opcodes where possible to further reduce the size of integer 14447 constants and thus reduce the overall size of the generated AML 14448 code. 14449 14450 Implemented error checking for new reserved terms for ACPI version 14451 2.0A. 14452 14453 Implemented the -qr option to display the current list of ACPI 14454 reserved names known to the compiler. 14455 14456 Implemented the -qc option to display the current list of ASL 14457 operators that are allowed within constant expressions and can 14458 therefore be folded at compile time if the operands are constants. 14459 14460 14461 4) Documentation 14462 14463 Updated the Programmer's Reference for new interfaces, data types, 14464 and memory allocation model options. 14465 14466 Updated the iASL Compiler User Reference to apply new format and 14467 add information about new features and options. 14468 14469 ---------------------------------------- 14470 19 April 2002. Summary of changes for this release. 14471 14472 1) ACPI CA Core Subsystem Version 20020419: 14473 14474 The source code base for the Core Subsystem has been completely 14475 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 14476 versions. The Lint option files used are included in the 14477 /acpi/generate/lint directory. 14478 14479 Implemented enhanced status/error checking across the entire 14480 Hardware manager subsystem. Any hardware errors (reported from 14481 the OSL) are now bubbled up and will abort a running control 14482 method. 14483 14484 14485 Fixed a problem where the per-ACPI-table integer width (32 or 64) 14486 was stored only with control method nodes, causing a fault when 14487 non-control method code was executed during table loading. The 14488 solution implemented uses a global variable to indicate table 14489 width across the entire ACPI subsystem. Therefore, ACPI CA does 14490 not support mixed integer widths across different ACPI tables 14491 (DSDT, SSDT). 14492 14493 Fixed a problem where NULL extended fields (X fields) in an ACPI 14494 2.0 ACPI FADT caused the table load to fail. Although the 14495 existing ACPI specification is a bit fuzzy on this topic, the new 14496 behavior is to fall back on a ACPI 1.0 field if the corresponding 14497 ACPI 2.0 X field is zero (even though the table revision indicates 14498 a full ACPI 2.0 table.) The ACPI specification will be updated to 14499 clarify this issue. 14500 14501 Fixed a problem with the SystemMemory operation region handler 14502 where memory was always accessed byte-wise even if the AML- 14503 specified access width was larger than a byte. This caused 14504 problems on systems with memory-mapped I/O. Memory is now 14505 accessed with the width specified. On systems that do not support 14506 non-aligned transfers, a check is made to guarantee proper address 14507 alignment before proceeding in order to avoid an AML-caused 14508 alignment fault within the kernel. 14509 14510 14511 Fixed a problem with the ExtendedIrq resource where only one byte 14512 of the 4-byte Irq field was extracted. 14513 14514 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 14515 function was out of date and required a rewrite. 14516 14517 Code and Data Size: Current core subsystem library sizes are shown 14518 below. These are the code and data sizes for the acpica.lib 14519 produced by the Microsoft Visual C++ 6.0 compiler, and these 14520 values do not include any ACPI driver or OSPM code. The debug 14521 version of the code includes the debug output trace mechanism and 14522 has a larger code and data size. Note that these values will vary 14523 depending on the efficiency of the compiler and the compiler 14524 options used during generation. 14525 14526 Previous Release 14527 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 14528 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 14529 Current Release: 14530 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 14531 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 14532 14533 14534 2) Linux 14535 14536 PCI IRQ routing fixes (Dominik Brodowski) 14537 14538 14539 3) iASL Compiler Version X2042: 14540 14541 Implemented an additional compile-time error check for a field 14542 unit whose size + minimum access width would cause a run-time 14543 access beyond the end-of-region. Previously, only the field size 14544 itself was checked. 14545 14546 The Core subsystem and iASL compiler now share a common parse 14547 object in preparation for compile-time evaluation of the type 14548 3/4/5 ASL operators. 14549 14550 14551 ---------------------------------------- 14552 Summary of changes for this release: 03_29_02 14553 14554 1) ACPI CA Core Subsystem Version 20020329: 14555 14556 Implemented support for late evaluation of TermArg operands to 14557 Buffer and Package objects. This allows complex expressions to be 14558 used in the declarations of these object types. 14559 14560 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 14561 1.0, if the field was larger than 32 bits, it was returned as a 14562 buffer - otherwise it was returned as an integer. In ACPI 2.0, 14563 the field is returned as a buffer only if the field is larger than 14564 64 bits. The TableRevision is now considered when making this 14565 conversion to avoid incompatibility with existing ASL code. 14566 14567 Implemented logical addressing for AcpiOsGetRootPointer. This 14568 allows an RSDP with either a logical or physical address. With 14569 this support, the host OS can now override all ACPI tables with 14570 one logical RSDP. Includes implementation of "typed" pointer 14571 support to allow a common data type for both physical and logical 14572 pointers internally. This required a change to the 14573 AcpiOsGetRootPointer interface. 14574 14575 Implemented the use of ACPI 2.0 Generic Address Structures for all 14576 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 14577 mapped I/O for these ACPI features. 14578 14579 Initialization now ignores not only non-required tables (All 14580 tables other than the FADT, FACS, DSDT, and SSDTs), but also does 14581 not validate the table headers of unrecognized tables. 14582 14583 Fixed a problem where a notify handler could only be 14584 installed/removed on an object of type Device. All "notify" 14585 14586 objects are now supported -- Devices, Processor, Power, and 14587 Thermal. 14588 14589 Removed most verbosity from the ACPI_DB_INFO debug level. Only 14590 critical information is returned when this debug level is enabled. 14591 14592 Code and Data Size: Current core subsystem library sizes are shown 14593 below. These are the code and data sizes for the acpica.lib 14594 produced by the Microsoft Visual C++ 6.0 compiler, and these 14595 values do not include any ACPI driver or OSPM code. The debug 14596 version of the code includes the debug output trace mechanism and 14597 has a larger code and data size. Note that these values will vary 14598 depending on the efficiency of the compiler and the compiler 14599 options used during generation. 14600 14601 Previous Release 14602 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 14603 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 14604 Current Release: 14605 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 14606 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 14607 14608 14609 2) Linux: 14610 14611 The processor driver (acpi_processor.c) now fully supports ACPI 14612 2.0-based processor performance control (e.g. Intel(R) 14613 SpeedStep(TM) technology) Note that older laptops that only have 14614 the Intel "applet" interface are not supported through this. The 14615 'limit' and 'performance' interface (/proc) are fully functional. 14616 [Note that basic policy for controlling performance state 14617 transitions will be included in the next version of ospmd.] The 14618 idle handler was modified to more aggressively use C2, and PIIX4 14619 errata handling underwent a complete overhaul (big thanks to 14620 Dominik Brodowski). 14621 14622 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 14623 based devices in the ACPI namespace are now dynamically bound 14624 (associated) with their PCI counterparts (e.g. PCI1->01:00.0). 14625 This allows, among other things, ACPI to resolve bus numbers for 14626 subordinate PCI bridges. 14627 14628 Enhanced PCI IRQ routing to get the proper bus number for _PRT 14629 entries defined underneath PCI bridges. 14630 14631 Added IBM 600E to bad bios list due to invalid _ADR value for 14632 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 14633 14634 In the process of adding full MADT support (e.g. IOAPIC) for IA32 14635 (acpi.c, mpparse.c) -- stay tuned. 14636 14637 Added back visual differentiation between fixed-feature and 14638 control-method buttons in dmesg. Buttons are also subtyped (e.g. 14639 button/power/PWRF) to simplify button identification. 14640 14641 We no longer use -Wno-unused when compiling debug. Please ignore 14642 any "_THIS_MODULE defined but not used" messages. 14643 14644 Can now shut down the system using "magic sysrq" key. 14645 14646 14647 3) iASL Compiler version 2041: 14648 14649 Fixed a problem where conversion errors for hex/octal/decimal 14650 constants were not reported. 14651 14652 Implemented a fix for the General Register template Address field. 14653 This field was 8 bits when it should be 64. 14654 14655 Fixed a problem where errors/warnings were no longer being emitted 14656 within the listing output file. 14657 14658 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 14659 exactly 4 characters, alphanumeric only. 14660 14661 14662 14663 14664 ---------------------------------------- 14665 Summary of changes for this release: 03_08_02 14666 14667 14668 1) ACPI CA Core Subsystem Version 20020308: 14669 14670 Fixed a problem with AML Fields where the use of the "AccessAny" 14671 keyword could cause an interpreter error due to attempting to read 14672 or write beyond the end of the parent Operation Region. 14673 14674 Fixed a problem in the SystemMemory Operation Region handler where 14675 an attempt was made to map memory beyond the end of the region. 14676 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 14677 errors on some Linux systems. 14678 14679 Fixed a problem where the interpreter/namespace "search to root" 14680 algorithm was not functioning for some object types. Relaxed the 14681 internal restriction on the search to allow upsearches for all 14682 external object types as well as most internal types. 14683 14684 14685 2) Linux: 14686 14687 We now use safe_halt() macro versus individual calls to sti | hlt. 14688 14689 Writing to the processor limit interface should now work. "echo 1" 14690 will increase the limit, 2 will decrease, and 0 will reset to the 14691 14692 default. 14693 14694 14695 3) ASL compiler: 14696 14697 Fixed segfault on Linux version. 14698 14699 14700 ---------------------------------------- 14701 Summary of changes for this release: 02_25_02 14702 14703 1) ACPI CA Core Subsystem: 14704 14705 14706 Fixed a problem where the GPE bit masks were not initialized 14707 properly, causing erratic GPE behavior. 14708 14709 Implemented limited support for multiple calling conventions. The 14710 code can be generated with either the VPL (variable parameter 14711 list, or "C") convention, or the FPL (fixed parameter list, or 14712 "Pascal") convention. The core subsystem is about 3.4% smaller 14713 when generated with FPL. 14714 14715 14716 2) Linux 14717 14718 Re-add some /proc/acpi/event functionality that was lost during 14719 the rewrite 14720 14721 Resolved issue with /proc events for fixed-feature buttons showing 14722 up as the system device. 14723 14724 Fixed checks on C2/C3 latencies to be inclusive of maximum values. 14725 14726 Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 14727 14728 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 14729 14730 Fixed limit interface & usage to fix bugs with passive cooling 14731 hysterisis. 14732 14733 Restructured PRT support. 14734 14735 14736 ---------------------------------------- 14737 Summary of changes for this label: 02_14_02 14738 14739 14740 1) ACPI CA Core Subsystem: 14741 14742 Implemented support in AcpiLoadTable to allow loading of FACS and 14743 FADT tables. 14744 14745 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 14746 been removed. All 64-bit platforms should be migrated to the ACPI 14747 2.0 tables. The actbl71.h header has been removed from the source 14748 tree. 14749 14750 All C macros defined within the subsystem have been prefixed with 14751 "ACPI_" to avoid collision with other system include files. 14752 14753 Removed the return value for the two AcpiOsPrint interfaces, since 14754 it is never used and causes lint warnings for ignoring the return 14755 value. 14756 14757 Added error checking to all internal mutex acquire and release 14758 calls. Although a failure from one of these interfaces is 14759 probably a fatal system error, these checks will cause the 14760 immediate abort of the currently executing method or interface. 14761 14762 Fixed a problem where the AcpiSetCurrentResources interface could 14763 fault. This was a side effect of the deployment of the new memory 14764 allocation model. 14765 14766 Fixed a couple of problems with the Global Lock support introduced 14767 in the last major build. The "common" (1.0/2.0) internal FACS was 14768 being overwritten with the FACS signature and clobbering the 14769 Global Lock pointer. Also, the actual firmware FACS was being 14770 unmapped after construction of the "common" FACS, preventing 14771 access to the actual Global Lock field within it. The "common" 14772 internal FACS is no longer installed as an actual ACPI table; it 14773 is used simply as a global. 14774 14775 Code and Data Size: Current core subsystem library sizes are shown 14776 below. These are the code and data sizes for the acpica.lib 14777 produced by the Microsoft Visual C++ 6.0 compiler, and these 14778 values do not include any ACPI driver or OSPM code. The debug 14779 version of the code includes the debug output trace mechanism and 14780 has a larger code and data size. Note that these values will vary 14781 depending on the efficiency of the compiler and the compiler 14782 options used during generation. 14783 14784 Previous Release (02_07_01) 14785 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 14786 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 14787 Current Release: 14788 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 14789 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 14790 14791 14792 2) Linux 14793 14794 Updated Linux-specific code for core macro and OSL interface 14795 changes described above. 14796 14797 Improved /proc/acpi/event. It now can be opened only once and has 14798 proper poll functionality. 14799 14800 Fixed and restructured power management (acpi_bus). 14801 14802 Only create /proc "view by type" when devices of that class exist. 14803 14804 Fixed "charging/discharging" bug (and others) in acpi_battery. 14805 14806 Improved thermal zone code. 14807 14808 14809 3) ASL Compiler, version X2039: 14810 14811 14812 Implemented the new compiler restriction on ASL String hex/octal 14813 escapes to non-null, ASCII values. An error results if an invalid 14814 value is used. (This will require an ACPI 2.0 specification 14815 change.) 14816 14817 AML object labels that are output to the optional C and ASM source 14818 are now prefixed with both the ACPI table signature and table ID 14819 to help guarantee uniqueness within a large BIOS project. 14820 14821 14822 ---------------------------------------- 14823 Summary of changes for this label: 02_01_02 14824 14825 1) ACPI CA Core Subsystem: 14826 14827 ACPI 2.0 support is complete in the entire Core Subsystem and the 14828 ASL compiler. All new ACPI 2.0 operators are implemented and all 14829 other changes for ACPI 2.0 support are complete. With 14830 simultaneous code and data optimizations throughout the subsystem, 14831 ACPI 2.0 support has been implemented with almost no additional 14832 cost in terms of code and data size. 14833 14834 Implemented a new mechanism for allocation of return buffers. If 14835 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 14836 be allocated on behalf of the caller. Consolidated all return 14837 buffer validation and allocation to a common procedure. Return 14838 buffers will be allocated via the primary OSL allocation interface 14839 since it appears that a separate pool is not needed by most users. 14840 If a separate pool is required for these buffers, the caller can 14841 still use the original mechanism and pre-allocate the buffer(s). 14842 14843 Implemented support for string operands within the DerefOf 14844 operator. 14845 14846 Restructured the Hardware and Event managers to be table driven, 14847 simplifying the source code and reducing the amount of generated 14848 code. 14849 14850 Split the common read/write low-level ACPI register bitfield 14851 procedure into a separate read and write, simplifying the code 14852 considerably. 14853 14854 Obsoleted the AcpiOsCallocate OSL interface. This interface was 14855 used only a handful of times and didn't have enough critical mass 14856 for a separate interface. Replaced with a common calloc procedure 14857 in the core. 14858 14859 Fixed a reported problem with the GPE number mapping mechanism 14860 that allows GPE1 numbers to be non-contiguous with GPE0. 14861 Reorganized the GPE information and shrunk a large array that was 14862 originally large enough to hold info for all possible GPEs (256) 14863 to simply large enough to hold all GPEs up to the largest GPE 14864 number on the machine. 14865 14866 Fixed a reported problem with resource structure alignment on 64- 14867 bit platforms. 14868 14869 Changed the AcpiEnableEvent and AcpiDisableEvent external 14870 interfaces to not require any flags for the common case of 14871 enabling/disabling a GPE. 14872 14873 Implemented support to allow a "Notify" on a Processor object. 14874 14875 Most TBDs in comments within the source code have been resolved 14876 and eliminated. 14877 14878 14879 Fixed a problem in the interpreter where a standalone parent 14880 prefix (^) was not handled correctly in the interpreter and 14881 debugger. 14882 14883 Removed obsolete and unnecessary GPE save/restore code. 14884 14885 Implemented Field support in the ASL Load operator. This allows a 14886 table to be loaded from a named field, in addition to loading a 14887 table directly from an Operation Region. 14888 14889 Implemented timeout and handle support in the external Global Lock 14890 interfaces. 14891 14892 Fixed a problem in the AcpiDump utility where pathnames were no 14893 longer being generated correctly during the dump of named objects. 14894 14895 Modified the AML debugger to give a full display of if/while 14896 predicates instead of just one AML opcode at a time. (The 14897 predicate can have several nested ASL statements.) The old method 14898 was confusing during single stepping. 14899 14900 Code and Data Size: Current core subsystem library sizes are shown 14901 below. These are the code and data sizes for the acpica.lib 14902 produced by the Microsoft Visual C++ 6.0 compiler, and these 14903 values do not include any ACPI driver or OSPM code. The debug 14904 version of the code includes the debug output trace mechanism and 14905 has a larger code and data size. Note that these values will vary 14906 depending on the efficiency of the compiler and the compiler 14907 options used during generation. 14908 14909 Previous Release (12_18_01) 14910 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 14911 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 14912 Current Release: 14913 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 14914 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 14915 14916 2) Linux 14917 14918 Implemented fix for PIIX reverse throttling errata (Processor 14919 driver) 14920 14921 Added new Limit interface (Processor and Thermal drivers) 14922 14923 New thermal policy (Thermal driver) 14924 14925 Many updates to /proc 14926 14927 Battery "low" event support (Battery driver) 14928 14929 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 14930 14931 IA32 - IA64 initialization unification, no longer experimental 14932 14933 Menuconfig options redesigned 14934 14935 3) ASL Compiler, version X2037: 14936 14937 Implemented several new output features to simplify integration of 14938 AML code into firmware: 1) Output the AML in C source code with 14939 labels for each named ASL object. The original ASL source code 14940 is interleaved as C comments. 2) Output the AML in ASM source code 14941 with labels and interleaved ASL source. 3) Output the AML in 14942 raw hex table form, in either C or ASM. 14943 14944 Implemented support for optional string parameters to the 14945 LoadTable operator. 14946 14947 Completed support for embedded escape sequences within string 14948 literals. The compiler now supports all single character escapes 14949 as well as the Octal and Hex escapes. Note: the insertion of a 14950 null byte into a string literal (via the hex/octal escape) causes 14951 the string to be immediately terminated. A warning is issued. 14952 14953 Fixed a problem where incorrect AML was generated for the case 14954 where an ASL namepath consists of a single parent prefix ( 14955 14956 ) with no trailing name segments. 14957 14958 The compiler has been successfully generated with a 64-bit C 14959 compiler. 14960 14961 14962 14963 14964 ---------------------------------------- 14965 Summary of changes for this label: 12_18_01 14966 14967 1) Linux 14968 14969 Enhanced blacklist with reason and severity fields. Any table's 14970 signature may now be used to identify a blacklisted system. 14971 14972 Call _PIC control method to inform the firmware which interrupt 14973 model the OS is using. Turn on any disabled link devices. 14974 14975 Cleaned up busmgr /proc error handling (Andreas Dilger) 14976 14977 2) ACPI CA Core Subsystem: 14978 14979 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 14980 while loop) 14981 14982 Completed implementation of the ACPI 2.0 "Continue", 14983 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 14984 operators. All new ACPI 2.0 operators are now implemented in both 14985 the ASL compiler and the AML interpreter. The only remaining ACPI 14986 2.0 task is support for the String data type in the DerefOf 14987 operator. Fixed a problem with AcquireMutex where the status code 14988 was lost if the caller had to actually wait for the mutex. 14989 14990 Increased the maximum ASL Field size from 64K bits to 4G bits. 14991 14992 Completed implementation of the external Global Lock interfaces -- 14993 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 14994 Handler parameters were added. 14995 14996 Completed another pass at removing warnings and issues when 14997 compiling with 64-bit compilers. The code now compiles cleanly 14998 with the Intel 64-bit C/C++ compiler. Most notably, the pointer 14999 add and subtract (diff) macros have changed considerably. 15000 15001 15002 Created and deployed a new ACPI_SIZE type that is 64-bits wide on 15003 64-bit platforms, 32-bits on all others. This type is used 15004 wherever memory allocation and/or the C sizeof() operator is used, 15005 and affects the OSL memory allocation interfaces AcpiOsAllocate 15006 and AcpiOsCallocate. 15007 15008 Implemented sticky user breakpoints in the AML debugger. 15009 15010 Code and Data Size: Current core subsystem library sizes are shown 15011 below. These are the code and data sizes for the acpica.lib 15012 produced by the Microsoft Visual C++ 6.0 compiler, and these 15013 values do not include any ACPI driver or OSPM code. The debug 15014 version of the code includes the debug output trace mechanism and 15015 has a larger code and data size. Note that these values will vary 15016 depending on the efficiency of the compiler and the compiler 15017 options used during generation. 15018 15019 Previous Release (12_05_01) 15020 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 15021 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 15022 Current Release: 15023 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 15024 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 15025 15026 3) ASL Compiler, version X2034: 15027 15028 Now checks for (and generates an error if detected) the use of a 15029 Break or Continue statement without an enclosing While statement. 15030 15031 15032 Successfully generated the compiler with the Intel 64-bit C 15033 compiler. 15034 15035 ---------------------------------------- 15036 Summary of changes for this label: 12_05_01 15037 15038 1) ACPI CA Core Subsystem: 15039 15040 The ACPI 2.0 CopyObject operator is fully implemented. This 15041 operator creates a new copy of an object (and is also used to 15042 bypass the "implicit conversion" mechanism of the Store operator.) 15043 15044 The ACPI 2.0 semantics for the SizeOf operator are fully 15045 implemented. The change is that performing a SizeOf on a 15046 reference object causes an automatic dereference of the object to 15047 tha actual value before the size is evaluated. This behavior was 15048 undefined in ACPI 1.0. 15049 15050 The ACPI 2.0 semantics for the Extended IRQ resource descriptor 15051 have been implemented. The interrupt polarity and mode are now 15052 independently set. 15053 15054 Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 15055 appearing in Package objects were not properly converted to 15056 integers when the internal Package was converted to an external 15057 object (via the AcpiEvaluateObject interface.) 15058 15059 Fixed a problem with the namespace object deletion mechanism for 15060 objects created by control methods. There were two parts to this 15061 problem: 1) Objects created during the initialization phase method 15062 parse were not being deleted, and 2) The object owner ID mechanism 15063 to track objects was broken. 15064 15065 Fixed a problem where the use of the ASL Scope operator within a 15066 control method would result in an invalid opcode exception. 15067 15068 Fixed a problem introduced in the previous label where the buffer 15069 length required for the _PRT structure was not being returned 15070 correctly. 15071 15072 Code and Data Size: Current core subsystem library sizes are shown 15073 below. These are the code and data sizes for the acpica.lib 15074 produced by the Microsoft Visual C++ 6.0 compiler, and these 15075 values do not include any ACPI driver or OSPM code. The debug 15076 version of the code includes the debug output trace mechanism and 15077 has a larger code and data size. Note that these values will vary 15078 depending on the efficiency of the compiler and the compiler 15079 options used during generation. 15080 15081 Previous Release (11_20_01) 15082 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 15083 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 15084 15085 Current Release: 15086 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 15087 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 15088 15089 2) Linux: 15090 15091 Updated all files to apply cleanly against 2.4.16. 15092 15093 Added basic PCI Interrupt Routing Table (PRT) support for IA32 15094 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This 15095 version supports both static and dyanmic PRT entries, but dynamic 15096 entries are treated as if they were static (not yet 15097 reconfigurable). Architecture- specific code to use this data is 15098 absent on IA32 but should be available shortly. 15099 15100 Changed the initialization sequence to start the ACPI interpreter 15101 (acpi_init) prior to initialization of the PCI driver (pci_init) 15102 in init/main.c. This ordering is required to support PRT and 15103 facilitate other (future) enhancement. A side effect is that the 15104 ACPI bus driver and certain device drivers can no longer be loaded 15105 as modules. 15106 15107 Modified the 'make menuconfig' options to allow PCI Interrupt 15108 Routing support to be included without the ACPI Bus and other 15109 device drivers. 15110 15111 3) ASL Compiler, version X2033: 15112 15113 Fixed some issues with the use of the new CopyObject and 15114 DataTableRegion operators. Both are fully functional. 15115 15116 ---------------------------------------- 15117 Summary of changes for this label: 11_20_01 15118 15119 20 November 2001. Summary of changes for this release. 15120 15121 1) ACPI CA Core Subsystem: 15122 15123 Updated Index support to match ACPI 2.0 semantics. Storing a 15124 Integer, String, or Buffer to an Index of a Buffer will store only 15125 the least-significant byte of the source to the Indexed buffer 15126 byte. Multiple writes are not performed. 15127 15128 Fixed a problem where the access type used in an AccessAs ASL 15129 operator was not recorded correctly into the field object. 15130 15131 Fixed a problem where ASL Event objects were created in a 15132 signalled state. Events are now created in an unsignalled state. 15133 15134 The internal object cache is now purged after table loading and 15135 initialization to reduce the use of dynamic kernel memory -- on 15136 the assumption that object use is greatest during the parse phase 15137 of the entire table (versus the run-time use of individual control 15138 methods.) 15139 15140 ACPI 2.0 variable-length packages are now fully operational. 15141 15142 Code and Data Size: Code and Data optimizations have permitted new 15143 feature development with an actual reduction in the library size. 15144 Current core subsystem library sizes are shown below. These are 15145 the code and data sizes for the acpica.lib produced by the 15146 Microsoft Visual C++ 6.0 compiler, and these values do not include 15147 any ACPI driver or OSPM code. The debug version of the code 15148 includes the debug output trace mechanism and has a larger code 15149 and data size. Note that these values will vary depending on the 15150 efficiency of the compiler and the compiler options used during 15151 generation. 15152 15153 Previous Release (11_09_01): 15154 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 15155 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 15156 15157 Current Release: 15158 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 15159 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 15160 15161 2) Linux: 15162 15163 Enhanced the ACPI boot-time initialization code to allow the use 15164 of Local APIC tables for processor enumeration on IA-32, and to 15165 pave the way for a fully MPS-free boot (on SMP systems) in the 15166 near future. This functionality replaces 15167 arch/i386/kernel/acpitables.c, which was introduced in an earlier 15168 2.4.15-preX release. To enable this feature you must add 15169 "acpi_boot=on" to the kernel command line -- see the help entry 15170 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 15171 the works... 15172 15173 Restructured the configuration options to allow boot-time table 15174 parsing support without inclusion of the ACPI Interpreter (and 15175 other) code. 15176 15177 NOTE: This release does not include fixes for the reported events, 15178 power-down, and thermal passive cooling issues (coming soon). 15179 15180 3) ASL Compiler: 15181 15182 Added additional typechecking for Fields within restricted access 15183 Operation Regions. All fields within EC and CMOS regions must be 15184 declared with ByteAcc. All fields withing SMBus regions must be 15185 declared with the BufferAcc access type. 15186 15187 Fixed a problem where the listing file output of control methods 15188 no longer interleaved the actual AML code with the ASL source 15189 code. 15190 15191 15192 15193 15194 ---------------------------------------- 15195 Summary of changes for this label: 11_09_01 15196 15197 1) ACPI CA Core Subsystem: 15198 15199 Implemented ACPI 2.0-defined support for writes to fields with a 15200 Buffer, String, or Integer source operand that is smaller than the 15201 target field. In these cases, the source operand is zero-extended 15202 to fill the target field. 15203 15204 Fixed a problem where a Field starting bit offset (within the 15205 parent operation region) was calculated incorrectly if the 15206 15207 alignment of the field differed from the access width. This 15208 affected CreateWordField, CreateDwordField, CreateQwordField, and 15209 possibly other fields that use the "AccessAny" keyword. 15210 15211 Fixed a problem introduced in the 11_02_01 release where indirect 15212 stores through method arguments did not operate correctly. 15213 15214 2) Linux: 15215 15216 Implemented boot-time ACPI table parsing support 15217 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 15218 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 15219 legacy BIOS interfaces (e.g. MPS) for the configuration of system 15220 processors, memory, and interrupts during setup_arch(). Note that 15221 this patch does not include the required architecture-specific 15222 changes required to apply this information -- subsequent patches 15223 will be posted for both IA32 and IA64 to achieve this. 15224 15225 Added low-level sleep support for IA32 platforms, courtesy of Pat 15226 Mochel. This allows IA32 systems to transition to/from various 15227 sleeping states (e.g. S1, S3), although the lack of a centralized 15228 driver model and power-manageable drivers will prevent its 15229 (successful) use on most systems. 15230 15231 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 15232 submenu, unified IA32 and IA64 options, added new "Boot using ACPI 15233 tables" option, etc. 15234 15235 Increased the default timeout for the EC driver from 1ms to 10ms 15236 (1000 cycles of 10us) to try to address AE_TIME errors during EC 15237 transactions. 15238 15239 ---------------------------------------- 15240 Summary of changes for this label: 11_02_01 15241 15242 1) ACPI CA Core Subsystem: 15243 15244 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 15245 (QWordAcc keyword). All ACPI 2.0 64-bit support is now 15246 implemented. 15247 15248 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 15249 changes to support ACPI 2.0 Qword field access. Read/Write 15250 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 15251 accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 15252 the value parameter for the address space handler interface is now 15253 an ACPI_INTEGER. OSL implementations of these interfaces must now 15254 handle the case where the Width parameter is 64. 15255 15256 Index Fields: Fixed a problem where unaligned bit assembly and 15257 disassembly for IndexFields was not supported correctly. 15258 15259 Index and Bank Fields: Nested Index and Bank Fields are now 15260 supported. During field access, a check is performed to ensure 15261 that the value written to an Index or Bank register is not out of 15262 the range of the register. The Index (or Bank) register is 15263 written before each access to the field data. Future support will 15264 include allowing individual IndexFields to be wider than the 15265 DataRegister width. 15266 15267 Fields: Fixed a problem where the AML interpreter was incorrectly 15268 attempting to write beyond the end of a Field/OpRegion. This was 15269 a boundary case that occurred when a DWORD field was written to a 15270 BYTE access OpRegion, forcing multiple writes and causing the 15271 interpreter to write one datum too many. 15272 15273 Fields: Fixed a problem with Field/OpRegion access where the 15274 starting bit address of a field was incorrectly calculated if the 15275 current access type was wider than a byte (WordAcc, DwordAcc, or 15276 QwordAcc). 15277 15278 Fields: Fixed a problem where forward references to individual 15279 FieldUnits (individual Field names within a Field definition) were 15280 not resolved during the AML table load. 15281 15282 Fields: Fixed a problem where forward references from a Field 15283 definition to the parent Operation Region definition were not 15284 resolved during the AML table load. 15285 15286 Fields: Duplicate FieldUnit names within a scope are now detected 15287 during AML table load. 15288 15289 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 15290 returned an incorrect name for the root node. 15291 15292 Code and Data Size: Code and Data optimizations have permitted new 15293 feature development with an actual reduction in the library size. 15294 Current core subsystem library sizes are shown below. These are 15295 the code and data sizes for the acpica.lib produced by the 15296 Microsoft Visual C++ 6.0 compiler, and these values do not include 15297 any ACPI driver or OSPM code. The debug version of the code 15298 includes the debug output trace mechanism and has a larger code 15299 and data size. Note that these values will vary depending on the 15300 efficiency of the compiler and the compiler options used during 15301 generation. 15302 15303 Previous Release (10_18_01): 15304 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 15305 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 15306 15307 Current Release: 15308 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 15309 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 15310 15311 2) Linux: 15312 15313 Improved /proc processor output (Pavel Machek) Re-added 15314 MODULE_LICENSE("GPL") to all modules. 15315 15316 3) ASL Compiler version X2030: 15317 15318 Duplicate FieldUnit names within a scope are now detected and 15319 flagged as errors. 15320 15321 4) Documentation: 15322 15323 Programmer Reference updated to reflect OSL and address space 15324 handler interface changes described above. 15325 15326 ---------------------------------------- 15327 Summary of changes for this label: 10_18_01 15328 15329 ACPI CA Core Subsystem: 15330 15331 Fixed a problem with the internal object reference count mechanism 15332 that occasionally caused premature object deletion. This resolves 15333 all of the outstanding problem reports where an object is deleted 15334 in the middle of an interpreter evaluation. Although this problem 15335 only showed up in rather obscure cases, the solution to the 15336 problem involved an adjustment of all reference counts involving 15337 objects attached to namespace nodes. 15338 15339 Fixed a problem with Field support in the interpreter where 15340 writing to an aligned field whose length is an exact multiple (2 15341 or greater) of the field access granularity would cause an attempt 15342 to write beyond the end of the field. 15343 15344 The top level AML opcode execution functions within the 15345 interpreter have been renamed with a more meaningful and 15346 consistent naming convention. The modules exmonad.c and 15347 exdyadic.c were eliminated. New modules are exoparg1.c, 15348 exoparg2.c, exoparg3.c, and exoparg6.c. 15349 15350 Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 15351 15352 Fixed a problem where the AML debugger was causing some internal 15353 objects to not be deleted during subsystem termination. 15354 15355 Fixed a problem with the external AcpiEvaluateObject interface 15356 where the subsystem would fault if the named object to be 15357 evaluated refered to a constant such as Zero, Ones, etc. 15358 15359 Fixed a problem with IndexFields and BankFields where the 15360 subsystem would fault if the index, data, or bank registers were 15361 not defined in the same scope as the field itself. 15362 15363 Added printf format string checking for compilers that support 15364 this feature. Corrected more than 50 instances of issues with 15365 format specifiers within invocations of ACPI_DEBUG_PRINT 15366 throughout the core subsystem code. 15367 15368 The ASL "Revision" operator now returns the ACPI support level 15369 implemented in the core - the value "2" since the ACPI 2.0 support 15370 is more than 50% implemented. 15371 15372 Enhanced the output of the AML debugger "dump namespace" command 15373 to output in a more human-readable form. 15374 15375 Current core subsystem library code sizes are shown below. These 15376 15377 are the code and data sizes for the acpica.lib produced by the 15378 Microsoft Visual C++ 6.0 compiler, and these values do not include 15379 any ACPI driver or OSPM code. The debug version of the code 15380 includes the full debug trace mechanism -- leading to a much 15381 15382 larger code and data size. Note that these values will vary 15383 depending on the efficiency of the compiler and the compiler 15384 options used during generation. 15385 15386 Previous Label (09_20_01): 15387 Non-Debug Version: 65K Code, 5K Data, 70K Total 15388 Debug Version: 138K Code, 58K Data, 196K Total 15389 15390 This Label: 15391 15392 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 15393 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 15394 15395 Linux: 15396 15397 Implemented a "Bad BIOS Blacklist" to track machines that have 15398 known ASL/AML problems. 15399 15400 Enhanced the /proc interface for the thermal zone driver and added 15401 support for _HOT (the critical suspend trip point). The 'info' 15402 file now includes threshold/policy information, and allows setting 15403 of _SCP (cooling preference) and _TZP (polling frequency) values 15404 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 15405 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 15406 preference to the passive/quiet mode (if supported by the ASL). 15407 15408 Implemented a workaround for a gcc bug that resuted in an OOPs 15409 when loading the control method battery driver. 15410 15411 ---------------------------------------- 15412 Summary of changes for this label: 09_20_01 15413 15414 ACPI CA Core Subsystem: 15415 15416 The AcpiEnableEvent and AcpiDisableEvent interfaces have been 15417 modified to allow individual GPE levels to be flagged as wake- 15418 enabled (i.e., these GPEs are to remain enabled when the platform 15419 sleeps.) 15420 15421 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 15422 support wake-enabled GPEs. This means that upon entering the 15423 sleep state, all GPEs that are not wake-enabled are disabled. 15424 When leaving the sleep state, these GPEs are reenabled. 15425 15426 A local double-precision divide/modulo module has been added to 15427 enhance portability to OS kernels where a 64-bit math library is 15428 not available. The new module is "utmath.c". 15429 15430 Several optimizations have been made to reduce the use of CPU 15431 stack. Originally over 2K, the maximum stack usage is now below 15432 2K at 1860 bytes (1.82k) 15433 15434 Fixed a problem with the AcpiGetFirmwareTable interface where the 15435 root table pointer was not mapped into a logical address properly. 15436 15437 Fixed a problem where a NULL pointer was being dereferenced in the 15438 interpreter code for the ASL Notify operator. 15439 15440 Fixed a problem where the use of the ASL Revision operator 15441 returned an error. This operator now returns the current version 15442 of the ACPI CA core subsystem. 15443 15444 Fixed a problem where objects passed as control method parameters 15445 to AcpiEvaluateObject were always deleted at method termination. 15446 However, these objects may end up being stored into the namespace 15447 by the called method. The object reference count mechanism was 15448 applied to these objects instead of a force delete. 15449 15450 Fixed a problem where static strings or buffers (contained in the 15451 AML code) that are declared as package elements within the ASL 15452 code could cause a fault because the interpreter would attempt to 15453 delete them. These objects are now marked with the "static 15454 object" flag to prevent any attempt to delete them. 15455 15456 Implemented an interpreter optimization to use operands directly 15457 from the state object instead of extracting the operands to local 15458 variables. This reduces stack use and code size, and improves 15459 performance. 15460 15461 The module exxface.c was eliminated as it was an unnecessary extra 15462 layer of code. 15463 15464 Current core subsystem library code sizes are shown below. These 15465 are the code and data sizes for the acpica.lib produced by the 15466 Microsoft Visual C++ 6.0 compiler, and these values do not include 15467 any ACPI driver or OSPM code. The debug version of the code 15468 includes the full debug trace mechanism -- leading to a much 15469 larger code and data size. Note that these values will vary 15470 depending on the efficiency of the compiler and the compiler 15471 options used during generation. 15472 15473 Non-Debug Version: 65K Code, 5K Data, 70K Total 15474 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K 15475 Total (Previously 195K) 15476 15477 Linux: 15478 15479 Support for ACPI 2.0 64-bit integers has been added. All ACPI 15480 Integer objects are now 64 bits wide 15481 15482 All Acpi data types and structures are now in lower case. Only 15483 Acpi macros are upper case for differentiation. 15484 15485 Documentation: 15486 15487 Changes to the external interfaces as described above. 15488 15489 ---------------------------------------- 15490 Summary of changes for this label: 08_31_01 15491 15492 ACPI CA Core Subsystem: 15493 15494 A bug with interpreter implementation of the ASL Divide operator 15495 was found and fixed. The implicit function return value (not the 15496 explicit store operands) was returning the remainder instead of 15497 the quotient. This was a longstanding bug and it fixes several 15498 known outstanding issues on various platforms. 15499 15500 The ACPI_DEBUG_PRINT and function trace entry/exit macros have 15501 been further optimized for size. There are 700 invocations of the 15502 DEBUG_PRINT macro alone, so each optimization reduces the size of 15503 the debug version of the subsystem significantly. 15504 15505 A stack trace mechanism has been implemented. The maximum stack 15506 usage is about 2K on 32-bit platforms. The debugger command "stat 15507 stack" will display the current maximum stack usage. 15508 15509 All public symbols and global variables within the subsystem are 15510 now prefixed with the string "Acpi". This keeps all of the 15511 symbols grouped together in a kernel map, and avoids conflicts 15512 with other kernel subsystems. 15513 15514 Most of the internal fixed lookup tables have been moved into the 15515 code segment via the const operator. 15516 15517 Several enhancements have been made to the interpreter to both 15518 reduce the code size and improve performance. 15519 15520 Current core subsystem library code sizes are shown below. These 15521 are the code and data sizes for the acpica.lib produced by the 15522 Microsoft Visual C++ 6.0 compiler, and these values do not include 15523 any ACPI driver or OSPM code. The debug version of the code 15524 includes the full debug trace mechanism which contains over 700 15525 invocations of the DEBUG_PRINT macro, 500 function entry macro 15526 invocations, and over 900 function exit macro invocations -- 15527 leading to a much larger code and data size. Note that these 15528 values will vary depending on the efficiency of the compiler and 15529 the compiler options used during generation. 15530 15531 Non-Debug Version: 64K Code, 5K Data, 69K Total 15532 Debug Version: 137K Code, 58K Data, 195K Total 15533 15534 Linux: 15535 15536 Implemented wbinvd() macro, pending a kernel-wide definition. 15537 15538 Fixed /proc/acpi/event to handle poll() and short reads. 15539 15540 ASL Compiler, version X2026: 15541 15542 Fixed a problem introduced in the previous label where the AML 15543 15544 code emitted for package objects produced packages with zero 15545 length. 15546 15547 ---------------------------------------- 15548 Summary of changes for this label: 08_16_01 15549 15550 ACPI CA Core Subsystem: 15551 15552 The following ACPI 2.0 ASL operators have been implemented in the 15553 AML interpreter (These are already supported by the Intel ASL 15554 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 15555 ToBuffer. Support for 64-bit AML constants is implemented in the 15556 AML parser, debugger, and disassembler. 15557 15558 The internal memory tracking mechanism (leak detection code) has 15559 been upgraded to reduce the memory overhead (a separate tracking 15560 block is no longer allocated for each memory allocation), and now 15561 supports all of the internal object caches. 15562 15563 The data structures and code for the internal object caches have 15564 been coelesced and optimized so that there is a single cache and 15565 memory list data structure and a single group of functions that 15566 implement generic cache management. This has reduced the code 15567 size in both the debug and release versions of the subsystem. 15568 15569 The DEBUG_PRINT macro(s) have been optimized for size and replaced 15570 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 15571 different, because it generates a single call to an internal 15572 function. This results in a savings of about 90 bytes per 15573 invocation, resulting in an overall code and data savings of about 15574 16% in the debug version of the subsystem. 15575 15576 Linux: 15577 15578 Fixed C3 disk corruption problems and re-enabled C3 on supporting 15579 machines. 15580 15581 Integrated low-level sleep code by Patrick Mochel. 15582 15583 Further tweaked source code Linuxization. 15584 15585 Other minor fixes. 15586 15587 ASL Compiler: 15588 15589 Support for ACPI 2.0 variable length packages is fixed/completed. 15590 15591 Fixed a problem where the optional length parameter for the ACPI 15592 2.0 ToString operator. 15593 15594 Fixed multiple extraneous error messages when a syntax error is 15595 detected within the declaration line of a control method. 15596 15597 ---------------------------------------- 15598 Summary of changes for this label: 07_17_01 15599 15600 ACPI CA Core Subsystem: 15601 15602 Added a new interface named AcpiGetFirmwareTable to obtain any 15603 ACPI table via the ACPI signature. The interface can be called at 15604 any time during kernel initialization, even before the kernel 15605 virtual memory manager is initialized and paging is enabled. This 15606 allows kernel subsystems to obtain ACPI tables very early, even 15607 before the ACPI CA subsystem is initialized. 15608 15609 Fixed a problem where Fields defined with the AnyAcc attribute 15610 could be resolved to the incorrect address under the following 15611 conditions: 1) the field width is larger than 8 bits and 2) the 15612 parent operation region is not defined on a DWORD boundary. 15613 15614 Fixed a problem where the interpreter is not being locked during 15615 namespace initialization (during execution of the _INI control 15616 methods), causing an error when an attempt is made to release it 15617 later. 15618 15619 ACPI 2.0 support in the AML Interpreter has begun and will be 15620 ongoing throughout the rest of this year. In this label, The Mod 15621 operator is implemented. 15622 15623 Added a new data type to contain full PCI addresses named 15624 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 15625 and Function values. 15626 15627 Linux: 15628 15629 Enhanced the Linux version of the source code to change most 15630 capitalized ACPI type names to lowercase. For example, all 15631 instances of ACPI_STATUS are changed to acpi_status. This will 15632 result in a large diff, but the change is strictly cosmetic and 15633 aligns the CA code closer to the Linux coding standard. 15634 15635 OSL Interfaces: 15636 15637 The interfaces to the PCI configuration space have been changed to 15638 add the PCI Segment number and to split the single 32-bit combined 15639 DeviceFunction field into two 16-bit fields. This was 15640 accomplished by moving the four values that define an address in 15641 PCI configuration space (segment, bus, device, and function) to 15642 the new ACPI_PCI_ID structure. 15643 15644 The changes to the PCI configuration space interfaces led to a 15645 reexamination of the complete set of address space access 15646 interfaces for PCI, I/O, and Memory. The previously existing 18 15647 interfaces have proven difficult to maintain (any small change 15648 must be propagated across at least 6 interfaces) and do not easily 15649 allow for future expansion to 64 bits if necessary. Also, on some 15650 systems, it would not be appropriate to demultiplex the access 15651 width (8, 16, 32,or 64) before calling the OSL if the 15652 corresponding native OS interfaces contain a similar access width 15653 parameter. For these reasons, the 18 address space interfaces 15654 have been replaced by these 6 new ones: 15655 15656 AcpiOsReadPciConfiguration 15657 AcpiOsWritePciConfiguration 15658 AcpiOsReadMemory 15659 AcpiOsWriteMemory 15660 AcpiOsReadPort 15661 AcpiOsWritePort 15662 15663 Added a new interface named AcpiOsGetRootPointer to allow the OSL 15664 to perform the platform and/or OS-specific actions necessary to 15665 obtain the ACPI RSDP table pointer. On IA-32 platforms, this 15666 interface will simply call down to the CA core to perform the low- 15667 memory search for the table. On IA-64, the RSDP is obtained from 15668 EFI. Migrating this interface to the OSL allows the CA core to 15669 15670 remain OS and platform independent. 15671 15672 Added a new interface named AcpiOsSignal to provide a generic 15673 "function code and pointer" interface for various miscellaneous 15674 signals and notifications that must be made to the host OS. The 15675 first such signals are intended to support the ASL Fatal and 15676 Breakpoint operators. In the latter case, the AcpiOsBreakpoint 15677 interface has been obsoleted. 15678 15679 The definition of the AcpiFormatException interface has been 15680 changed to simplify its use. The caller no longer must supply a 15681 buffer to the call; A pointer to a const string is now returned 15682 directly. This allows the call to be easily used in printf 15683 statements, etc. since the caller does not have to manage a local 15684 buffer. 15685 15686 15687 ASL Compiler, Version X2025: 15688 15689 The ACPI 2.0 Switch/Case/Default operators have been implemented 15690 and are fully functional. They will work with all ACPI 1.0 15691 interpreters, since the operators are simply translated to If/Else 15692 pairs. 15693 15694 The ACPI 2.0 ElseIf operator is implemented and will also work 15695 with 1.0 interpreters, for the same reason. 15696 15697 Implemented support for ACPI 2.0 variable-length packages. These 15698 packages have a separate opcode, and their size is determined by 15699 the interpreter at run-time. 15700 15701 Documentation The ACPI CA Programmer Reference has been updated to 15702 reflect the new interfaces and changes to existing interfaces. 15703 15704 ------------------------------------------ 15705 Summary of changes for this label: 06_15_01 15706 15707 ACPI CA Core Subsystem: 15708 15709 Fixed a problem where a DWORD-accessed field within a Buffer 15710 object would get its byte address inadvertently rounded down to 15711 the nearest DWORD. Buffers are always Byte-accessible. 15712 15713 ASL Compiler, version X2024: 15714 15715 Fixed a problem where the Switch() operator would either fault or 15716 hang the compiler. Note however, that the AML code for this ACPI 15717 2.0 operator is not yet implemented. 15718 15719 Compiler uses the new AcpiOsGetTimer interface to obtain compile 15720 timings. 15721 15722 Implementation of the CreateField operator automatically converts 15723 a reference to a named field within a resource descriptor from a 15724 byte offset to a bit offset if required. 15725 15726 Added some missing named fields from the resource descriptor 15727 support. These are the names that are automatically created by the 15728 compiler to reference fields within a descriptor. They are only 15729 valid at compile time and are not passed through to the AML 15730 interpreter. 15731 15732 Resource descriptor named fields are now typed as Integers and 15733 subject to compile-time typechecking when used in expressions. 15734 15735 ------------------------------------------ 15736 Summary of changes for this label: 05_18_01 15737 15738 ACPI CA Core Subsystem: 15739 15740 Fixed a couple of problems in the Field support code where bits 15741 from adjacent fields could be returned along with the proper field 15742 bits. Restructured the field support code to improve performance, 15743 readability and maintainability. 15744 15745 New DEBUG_PRINTP macro automatically inserts the procedure name 15746 into the output, saving hundreds of copies of procedure name 15747 strings within the source, shrinking the memory footprint of the 15748 debug version of the core subsystem. 15749 15750 Source Code Structure: 15751 15752 The source code directory tree was restructured to reflect the 15753 current organization of the component architecture. Some files 15754 and directories have been moved and/or renamed. 15755 15756 Linux: 15757 15758 Fixed leaking kacpidpc processes. 15759 15760 Fixed queueing event data even when /proc/acpi/event is not 15761 opened. 15762 15763 ASL Compiler, version X2020: 15764 15765 Memory allocation performance enhancement - over 24X compile time 15766 improvement on large ASL files. Parse nodes and namestring 15767 buffers are now allocated from a large internal compiler buffer. 15768 15769 The temporary .SRC file is deleted unless the "-s" option is 15770 specified 15771 15772 The "-d" debug output option now sends all output to the .DBG file 15773 instead of the console. 15774 15775 "External" second parameter is now optional 15776 15777 "ElseIf" syntax now properly allows the predicate 15778 15779 Last operand to "Load" now recognized as a Target operand 15780 15781 Debug object can now be used anywhere as a normal object. 15782 15783 ResourceTemplate now returns an object of type BUFFER 15784 15785 EISAID now returns an object of type INTEGER 15786 15787 "Index" now works with a STRING operand 15788 15789 "LoadTable" now accepts optional parameters 15790 15791 "ToString" length parameter is now optional 15792 15793 "Interrupt (ResourceType," parse error fixed. 15794 15795 "Register" with a user-defined region space parse error fixed 15796 15797 Escaped backslash at the end of a string ("\\") scan/parse error 15798 fixed 15799 15800 "Revision" is now an object of type INTEGER. 15801 15802 15803 15804 ------------------------------------------ 15805 Summary of changes for this label: 05_02_01 15806 15807 Linux: 15808 15809 /proc/acpi/event now blocks properly. 15810 15811 Removed /proc/sys/acpi. You can still dump your DSDT from 15812 /proc/acpi/dsdt. 15813 15814 ACPI CA Core Subsystem: 15815 15816 Fixed a problem introduced in the previous label where some of the 15817 "small" resource descriptor types were not recognized. 15818 15819 Improved error messages for the case where an ASL Field is outside 15820 the range of the parent operation region. 15821 15822 ASL Compiler, version X2018: 15823 15824 15825 Added error detection for ASL Fields that extend beyond the length 15826 of the parent operation region (only if the length of the region 15827 is known at compile time.) This includes fields that have a 15828 minimum access width that is smaller than the parent region, and 15829 individual field units that are partially or entirely beyond the 15830 extent of the parent. 15831 15832 15833 15834 ------------------------------------------ 15835 Summary of changes for this label: 04_27_01 15836 15837 ACPI CA Core Subsystem: 15838 15839 Fixed a problem where the namespace mutex could be released at the 15840 wrong time during execution of AcpiRemoveAddressSpaceHandler. 15841 15842 Added optional thread ID output for debug traces, to simplify 15843 debugging of multiple threads. Added context switch notification 15844 when the debug code realizes that a different thread is now 15845 executing ACPI code. 15846 15847 Some additional external data types have been prefixed with the 15848 string "ACPI_" for consistency. This may effect existing code. 15849 The data types affected are the external callback typedefs - e.g., 15850 15851 WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 15852 15853 Linux: 15854 15855 Fixed an issue with the OSL semaphore implementation where a 15856 thread was waking up with an error from receiving a SIGCHLD 15857 signal. 15858 15859 Linux version of ACPI CA now uses the system C library for string 15860 manipulation routines instead of a local implementation. 15861 15862 Cleaned up comments and removed TBDs. 15863 15864 ASL Compiler, version X2017: 15865 15866 Enhanced error detection and reporting for all file I/O 15867 operations. 15868 15869 Documentation: 15870 15871 Programmer Reference updated to version 1.06. 15872 15873 15874 15875 ------------------------------------------ 15876 Summary of changes for this label: 04_13_01 15877 15878 ACPI CA Core Subsystem: 15879 15880 Restructured support for BufferFields and RegionFields. 15881 BankFields support is now fully operational. All known 32-bit 15882 limitations on field sizes have been removed. Both BufferFields 15883 and (Operation) RegionFields are now supported by the same field 15884 management code. 15885 15886 Resource support now supports QWORD address and IO resources. The 15887 16/32/64 bit address structures and the Extended IRQ structure 15888 have been changed to properly handle Source Resource strings. 15889 15890 A ThreadId of -1 is now used to indicate a "mutex not acquired" 15891 condition internally and must never be returned by AcpiOsThreadId. 15892 This reserved value was changed from 0 since Unix systems allow a 15893 thread ID of 0. 15894 15895 Linux: 15896 15897 Driver code reorganized to enhance portability 15898 15899 Added a kernel configuration option to control ACPI_DEBUG 15900 15901 Fixed the EC driver to honor _GLK. 15902 15903 ASL Compiler, version X2016: 15904 15905 Fixed support for the "FixedHw" keyword. Previously, the FixedHw 15906 address space was set to 0, not 0x7f as it should be. 15907 15908 ------------------------------------------ 15909 Summary of changes for this label: 03_13_01 15910 15911 ACPI CA Core Subsystem: 15912 15913 During ACPI initialization, the _SB_._INI method is now run if 15914 present. 15915 15916 Notify handler fix - notifies are deferred until the parent method 15917 completes execution. This fixes the "mutex already acquired" 15918 issue seen occasionally. 15919 15920 Part of the "implicit conversion" rules in ACPI 2.0 have been 15921 found to cause compatibility problems with existing ASL/AML. The 15922 convert "result-to-target-type" implementation has been removed 15923 for stores to method Args and Locals. Source operand conversion 15924 is still fully implemented. Possible changes to ACPI 2.0 15925 specification pending. 15926 15927 Fix to AcpiRsCalculatePciRoutingTableLength to return correct 15928 length. 15929 15930 Fix for compiler warnings for 64-bit compiles. 15931 15932 Linux: 15933 15934 /proc output aligned for easier parsing. 15935 15936 Release-version compile problem fixed. 15937 15938 New kernel configuration options documented in Configure.help. 15939 15940 IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 15941 context" message. 15942 15943 OSPM: 15944 15945 Power resource driver integrated with bus manager. 15946 15947 Fixed kernel fault during active cooling for thermal zones. 15948 15949 Source Code: 15950 15951 The source code tree has been restructured. 15952 15953 15954 15955 ------------------------------------------ 15956 Summary of changes for this label: 03_02_01 15957 15958 Linux OS Services Layer (OSL): 15959 15960 Major revision of all Linux-specific code. 15961 15962 Modularized all ACPI-specific drivers. 15963 15964 Added new thermal zone and power resource drivers. 15965 15966 Revamped /proc interface (new functionality is under /proc/acpi). 15967 15968 New kernel configuration options. 15969 15970 Linux known issues: 15971 15972 New kernel configuration options not documented in Configure.help 15973 yet. 15974 15975 15976 Module dependencies not currently implemented. If used, they 15977 should be loaded in this order: busmgr, power, ec, system, 15978 processor, battery, ac_adapter, button, thermal. 15979 15980 Modules will not load if CONFIG_MODVERSION is set. 15981 15982 IBM 600E - entering S5 may reboot instead of shutting down. 15983 15984 IBM 600E - Sleep button may generate "Invalid <NULL> context" 15985 message. 15986 15987 Some systems may fail with "execution mutex already acquired" 15988 message. 15989 15990 ACPI CA Core Subsystem: 15991 15992 Added a new OSL Interface, AcpiOsGetThreadId. This was required 15993 for the deadlock detection code. Defined to return a non-zero, 32- 15994 bit thread ID for the currently executing thread. May be a non- 15995 zero constant integer on single-thread systems. 15996 15997 Implemented deadlock detection for internal subsystem mutexes. We 15998 may add conditional compilation for this code (debug only) later. 15999 16000 ASL/AML Mutex object semantics are now fully supported. This 16001 includes multiple acquires/releases by owner and support for the 16002 16003 Mutex SyncLevel parameter. 16004 16005 A new "Force Release" mechanism automatically frees all ASL 16006 Mutexes that have been acquired but not released when a thread 16007 exits the interpreter. This forces conformance to the ACPI spec 16008 ("All mutexes must be released when an invocation exits") and 16009 prevents deadlocked ASL threads. This mechanism can be expanded 16010 (later) to monitor other resource acquisitions if OEM ASL code 16011 continues to misbehave (which it will). 16012 16013 Several new ACPI exception codes have been added for the Mutex 16014 support. 16015 16016 Recursive method calls are now allowed and supported (the ACPI 16017 spec does in fact allow recursive method calls.) The number of 16018 recursive calls is subject to the restrictions imposed by the 16019 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 16020 parameter. 16021 16022 Implemented support for the SyncLevel parameter for control 16023 methods (ACPI 2.0 feature) 16024 16025 Fixed a deadlock problem when multiple threads attempted to use 16026 the interpreter. 16027 16028 Fixed a problem where the string length of a String package 16029 element was not always set in a package returned from 16030 AcpiEvaluateObject. 16031 16032 Fixed a problem where the length of a String package element was 16033 not always included in the length of the overall package returned 16034 from AcpiEvaluateObject. 16035 16036 Added external interfaces (Acpi*) to the ACPI debug memory 16037 manager. This manager keeps a list of all outstanding 16038 allocations, and can therefore detect memory leaks and attempts to 16039 free memory blocks more than once. Useful for code such as the 16040 power manager, etc. May not be appropriate for device drivers. 16041 Performance with the debug code enabled is slow. 16042 16043 The ACPI Global Lock is now an optional hardware element. 16044 16045 ASL Compiler Version X2015: 16046 16047 Integrated changes to allow the compiler to be generated on 16048 multiple platforms. 16049 16050 Linux makefile added to generate the compiler on Linux 16051 16052 Source Code: 16053 16054 All platform-specific headers have been moved to their own 16055 subdirectory, Include/Platform. 16056 16057 New source file added, Interpreter/ammutex.c 16058 16059 New header file, Include/acstruct.h 16060 16061 Documentation: 16062 16063 The programmer reference has been updated for the following new 16064 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 16065 16066 ------------------------------------------ 16067 Summary of changes for this label: 02_08_01 16068 16069 Core ACPI CA Subsystem: Fixed a problem where an error was 16070 incorrectly returned if the return resource buffer was larger than 16071 the actual data (in the resource interfaces). 16072 16073 References to named objects within packages are resolved to the 16074 16075 full pathname string before packages are returned directly (via 16076 the AcpiEvaluateObject interface) or indirectly via the resource 16077 interfaces. 16078 16079 Linux OS Services Layer (OSL): 16080 16081 Improved /proc battery interface. 16082 16083 16084 Added C-state debugging output and other miscellaneous fixes. 16085 16086 ASL Compiler Version X2014: 16087 16088 All defined method arguments can now be used as local variables, 16089 including the ones that are not actually passed in as parameters. 16090 The compiler tracks initialization of the arguments and issues an 16091 exception if they are used without prior assignment (just like 16092 locals). 16093 16094 The -o option now specifies a filename prefix that is used for all 16095 output files, including the AML output file. Otherwise, the 16096 default behavior is as follows: 1) the AML goes to the file 16097 specified in the DSDT. 2) all other output files use the input 16098 source filename as the base. 16099 16100 ------------------------------------------ 16101 Summary of changes for this label: 01_25_01 16102 16103 Core ACPI CA Subsystem: Restructured the implementation of object 16104 store support within the interpreter. This includes support for 16105 the Store operator as well as any ASL operators that include a 16106 target operand. 16107 16108 Partially implemented support for Implicit Result-to-Target 16109 conversion. This is when a result object is converted on the fly 16110 to the type of an existing target object. Completion of this 16111 support is pending further analysis of the ACPI specification 16112 concerning this matter. 16113 16114 CPU-specific code has been removed from the subsystem (hardware 16115 directory). 16116 16117 New Power Management Timer functions added 16118 16119 Linux OS Services Layer (OSL): Moved system state transition code 16120 to the core, fixed it, and modified Linux OSL accordingly. 16121 16122 Fixed C2 and C3 latency calculations. 16123 16124 16125 We no longer use the compilation date for the version message on 16126 initialization, but retrieve the version from AcpiGetSystemInfo(). 16127 16128 Incorporated for fix Sony VAIO machines. 16129 16130 Documentation: The Programmer Reference has been updated and 16131 reformatted. 16132 16133 16134 ASL Compiler: Version X2013: Fixed a problem where the line 16135 numbering and error reporting could get out of sync in the 16136 presence of multiple include files. 16137 16138 ------------------------------------------ 16139 Summary of changes for this label: 01_15_01 16140 16141 Core ACPI CA Subsystem: 16142 16143 Implemented support for type conversions in the execution of the 16144 ASL Concatenate operator (The second operand is converted to 16145 match the type of the first operand before concatenation.) 16146 16147 Support for implicit source operand conversion is partially 16148 implemented. The ASL source operand types Integer, Buffer, and 16149 String are freely interchangeable for most ASL operators and are 16150 converted by the interpreter on the fly as required. Implicit 16151 Target operand conversion (where the result is converted to the 16152 target type before storing) is not yet implemented. 16153 16154 Support for 32-bit and 64-bit BCD integers is implemented. 16155 16156 Problem fixed where a field read on an aligned field could cause a 16157 read past the end of the field. 16158 16159 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 16160 does not return a value, but the caller expects one. (The ASL 16161 compiler flags this as a warning.) 16162 16163 ASL Compiler: 16164 16165 Version X2011: 16166 1. Static typechecking of all operands is implemented. This 16167 prevents the use of invalid objects (such as using a Package where 16168 an Integer is required) at compile time instead of at interpreter 16169 run-time. 16170 2. The ASL source line is printed with ALL errors and warnings. 16171 3. Bug fix for source EOF without final linefeed. 16172 4. Debug option is split into a parse trace and a namespace trace. 16173 5. Namespace output option (-n) includes initial values for 16174 integers and strings. 16175 6. Parse-only option added for quick syntax checking. 16176 7. Compiler checks for duplicate ACPI name declarations 16177 16178 Version X2012: 16179 1. Relaxed typechecking to allow interchangeability between 16180 strings, integers, and buffers. These types are now converted by 16181 the interpreter at runtime. 16182 2. Compiler reports time taken by each internal subsystem in the 16183 debug output file. 16184 16185 16186 ------------------------------------------ 16187 Summary of changes for this label: 12_14_00 16188 16189 ASL Compiler: 16190 16191 This is the first official release of the compiler. Since the 16192 compiler requires elements of the Core Subsystem, this label 16193 synchronizes everything. 16194 16195 ------------------------------------------ 16196 Summary of changes for this label: 12_08_00 16197 16198 16199 Fixed a problem where named references within the ASL definition 16200 of both OperationRegions and CreateXXXFields did not work 16201 properly. The symptom was an AE_AML_OPERAND_TYPE during 16202 initialization of the region/field. This is similar (but not 16203 related internally) to the problem that was fixed in the last 16204 label. 16205 16206 Implemented both 32-bit and 64-bit support for the BCD ASL 16207 functions ToBCD and FromBCD. 16208 16209 Updated all legal headers to include "2000" in the copyright 16210 years. 16211 16212 ------------------------------------------ 16213 Summary of changes for this label: 12_01_00 16214 16215 Fixed a problem where method invocations within the ASL definition 16216 of both OperationRegions and CreateXXXFields did not work 16217 properly. The symptom was an AE_AML_OPERAND_TYPE during 16218 initialization of the region/field: 16219 16220 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 16221 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 16222 (0x3005) 16223 16224 Fixed a problem where operators with more than one nested 16225 subexpression would fail. The symptoms were varied, by mostly 16226 AE_AML_OPERAND_TYPE errors. This was actually a rather serious 16227 problem that has gone unnoticed until now. 16228 16229 Subtract (Add (1,2), Multiply (3,4)) 16230 16231 Fixed a problem where AcpiGetHandle didn't quite get fixed in the 16232 previous build (The prefix part of a relative path was handled 16233 incorrectly). 16234 16235 Fixed a problem where Operation Region initialization failed if 16236 the operation region name was a "namepath" instead of a simple 16237 "nameseg". Symptom was an AE_NO_OPERAND error. 16238 16239 Fixed a problem where an assignment to a local variable via the 16240 indirect RefOf mechanism only worked for the first such 16241 assignment. Subsequent assignments were ignored. 16242 16243 ------------------------------------------ 16244 Summary of changes for this label: 11_15_00 16245 16246 ACPI 2.0 table support with backwards support for ACPI 1.0 and the 16247 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 16248 the AML interpreter does NOT have support for the new 2.0 ASL 16249 grammar terms at this time. 16250 16251 All ACPI hardware access is via the GAS structures in the ACPI 2.0 16252 FADT. 16253 16254 All physical memory addresses across all platforms are now 64 bits 16255 wide. Logical address width remains dependent on the platform 16256 (i.e., "void *"). 16257 16258 AcpiOsMapMemory interface changed to a 64-bit physical address. 16259 16260 The AML interpreter integer size is now 64 bits, as per the ACPI 16261 2.0 specification. 16262 16263 For backwards compatibility with ACPI 1.0, ACPI tables with a 16264 revision number less than 2 use 32-bit integers only. 16265 16266 Fixed a problem where the evaluation of OpRegion operands did not 16267 always resolve them to numbers properly. 16268 16269 ------------------------------------------ 16270 Summary of changes for this label: 10_20_00 16271 16272 Fix for CBN_._STA issue. This fix will allow correct access to 16273 CBN_ OpRegions when the _STA returns 0x8. 16274 16275 Support to convert ACPI constants (Ones, Zeros, One) to actual 16276 values before a package object is returned 16277 16278 Fix for method call as predicate to if/while construct causing 16279 incorrect if/while behavior 16280 16281 Fix for Else block package lengths sometimes calculated wrong (if 16282 block > 63 bytes) 16283 16284 Fix for Processor object length field, was always zero 16285 16286 Table load abort if FACP sanity check fails 16287 16288 Fix for problem with Scope(name) if name already exists 16289 16290 Warning emitted if a named object referenced cannot be found 16291 (resolved) during method execution. 16292 16293 16294 16295 16296 16297 ------------------------------------------ 16298 Summary of changes for this label: 9_29_00 16299 16300 New table initialization interfaces: AcpiInitializeSubsystem no 16301 longer has any parameters AcpiFindRootPointer - Find the RSDP (if 16302 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 16303 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 16304 AcpiLoadTables 16305 16306 Note: These interface changes require changes to all existing OSDs 16307 16308 The PCI_Config default address space handler is always installed 16309 at the root namespace object. 16310 16311 ------------------------------------------- 16312 Summary of changes for this label: 09_15_00 16313 16314 The new initialization architecture is implemented. New 16315 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 16316 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 16317 16318 (Namespace is automatically loaded when a table is loaded) 16319 16320 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 16321 52 bytes to 32 bytes. There is usually one of these for every 16322 namespace object, so the memory savings is significant. 16323 16324 Implemented just-in-time evaluation of the CreateField operators. 16325 16326 Bug fixes for IA-64 support have been integrated. 16327 16328 Additional code review comments have been implemented 16329 16330 The so-called "third pass parse" has been replaced by a final walk 16331 through the namespace to initialize all operation regions (address 16332 spaces) and fields that have not yet been initialized during the 16333 execution of the various _INI and REG methods. 16334 16335 New file - namespace/nsinit.c 16336 16337 ------------------------------------------- 16338 Summary of changes for this label: 09_01_00 16339 16340 Namespace manager data structures have been reworked to change the 16341 primary object from a table to a single object. This has 16342 resulted in dynamic memory savings of 3X within the namespace and 16343 2X overall in the ACPI CA subsystem. 16344 16345 Fixed problem where the call to AcpiEvFindPciRootBuses was 16346 inadvertently left commented out. 16347 16348 Reduced the warning count when generating the source with the GCC 16349 compiler. 16350 16351 Revision numbers added to each module header showing the 16352 SourceSafe version of the file. Please refer to this version 16353 number when giving us feedback or comments on individual modules. 16354 16355 The main object types within the subsystem have been renamed to 16356 clarify their purpose: 16357 16358 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 16359 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 16360 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 16361 16362 NOTE: no changes to the initialization sequence are included in 16363 this label. 16364 16365 ------------------------------------------- 16366 Summary of changes for this label: 08_23_00 16367 16368 Fixed problem where TerminateControlMethod was being called 16369 multiple times per method 16370 16371 Fixed debugger problem where single stepping caused a semaphore to 16372 be oversignalled 16373 16374 Improved performance through additional parse object caching - 16375 added ACPI_EXTENDED_OP type 16376 16377 ------------------------------------------- 16378 Summary of changes for this label: 08_10_00 16379 16380 Parser/Interpreter integration: Eliminated the creation of 16381 complete parse trees for ACPI tables and control methods. 16382 Instead, parse subtrees are created and then deleted as soon as 16383 they are processed (Either entered into the namespace or executed 16384 by the interpreter). This reduces the use of dynamic kernel 16385 memory significantly. (about 10X) 16386 16387 Exception codes broken into classes and renumbered. Be sure to 16388 recompile all code that includes acexcep.h. Hopefully we won't 16389 have to renumber the codes again now that they are split into 16390 classes (environment, programmer, AML code, ACPI table, and 16391 internal). 16392 16393 Fixed some additional alignment issues in the Resource Manager 16394 subcomponent 16395 16396 Implemented semaphore tracking in the AcpiExec utility, and fixed 16397 several places where mutexes/semaphores were being unlocked 16398 without a corresponding lock operation. There are no known 16399 semaphore or mutex "leaks" at this time. 16400 16401 Fixed the case where an ASL Return operator is used to return an 16402 unnamed package. 16403 16404 ------------------------------------------- 16405 Summary of changes for this label: 07_28_00 16406 16407 Fixed a problem with the way addresses were calculated in 16408 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 16409 manifested itself when a Field was created with WordAccess or 16410 DwordAccess, but the field unit defined within the Field was less 16411 16412 than a Word or Dword. 16413 16414 Fixed a problem in AmlDumpOperands() module's loop to pull 16415 operands off of the operand stack to display information. The 16416 problem manifested itself as a TLB error on 64-bit systems when 16417 accessing an operand stack with two or more operands. 16418 16419 Fixed a problem with the PCI configuration space handlers where 16420 context was getting confused between accesses. This required a 16421 change to the generic address space handler and address space 16422 setup definitions. Handlers now get both a global handler context 16423 (this is the one passed in by the user when executing 16424 AcpiInstallAddressSpaceHandler() and a specific region context 16425 that is unique to each region (For example, the _ADR, _SEG and 16426 _BBN values associated with a specific region). The generic 16427 function definitions have changed to the following: 16428 16429 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 16430 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 16431 *HandlerContext, // This used to be void *Context void 16432 *RegionContext); // This is an additional parameter 16433 16434 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 16435 RegionHandle, UINT32 Function, void *HandlerContext, void 16436 **RegionContext); // This used to be **ReturnContext 16437 16438 ------------------------------------------- 16439 Summary of changes for this label: 07_21_00 16440 16441 Major file consolidation and rename. All files within the 16442 interpreter have been renamed as well as most header files. This 16443 was done to prevent collisions with existing files in the host 16444 OSs -- filenames such as "config.h" and "global.h" seem to be 16445 quite common. The VC project files have been updated. All 16446 makefiles will require modification. 16447 16448 The parser/interpreter integration continues in Phase 5 with the 16449 implementation of a complete 2-pass parse (the AML is parsed 16450 twice) for each table; This avoids the construction of a huge 16451 parse tree and therefore reduces the amount of dynamic memory 16452 required by the subsystem. Greater use of the parse object cache 16453 means that performance is unaffected. 16454 16455 Many comments from the two code reviews have been rolled in. 16456 16457 The 64-bit alignment support is complete. 16458 16459 ------------------------------------------- 16460 Summary of changes for this label: 06_30_00 16461 16462 With a nod and a tip of the hat to the technology of yesteryear, 16463 we've added support in the source code for 80 column output 16464 devices. The code is now mostly constrained to 80 columns or 16465 less to support environments and editors that 1) cannot display 16466 or print more than 80 characters on a single line, and 2) cannot 16467 disable line wrapping. 16468 16469 A major restructuring of the namespace data structure has been 16470 completed. The result is 1) cleaner and more 16471 understandable/maintainable code, and 2) a significant reduction 16472 in the dynamic memory requirement for each named ACPI object 16473 (almost half). 16474 16475 ------------------------------------------- 16476 Summary of changes for this label: 06_23_00 16477 16478 Linux support has been added. In order to obtain approval to get 16479 the ACPI CA subsystem into the Linux kernel, we've had to make 16480 quite a few changes to the base subsystem that will affect all 16481 users (all the changes are generic and OS- independent). The 16482 effects of these global changes have been somewhat far reaching. 16483 Files have been merged and/or renamed and interfaces have been 16484 renamed. The major changes are described below. 16485 16486 Osd* interfaces renamed to AcpiOs* to eliminate namespace 16487 pollution/confusion within our target kernels. All OSD 16488 interfaces must be modified to match the new naming convention. 16489 16490 Files merged across the subsystem. A number of the smaller source 16491 and header files have been merged to reduce the file count and 16492 increase the density of the existing files. There are too many 16493 to list here. In general, makefiles that call out individual 16494 files will require rebuilding. 16495 16496 Interpreter files renamed. All interpreter files now have the 16497 prefix am* instead of ie* and is*. 16498 16499 Header files renamed: The acapi.h file is now acpixf.h. The 16500 acpiosd.h file is now acpiosxf.h. We are removing references to 16501 the acronym "API" since it is somewhat windowsy. The new name is 16502 "external interface" or xface or xf in the filenames.j 16503 16504 16505 All manifest constants have been forced to upper case (some were 16506 mixed case.) Also, the string "ACPI_" has been prepended to many 16507 (not all) of the constants, typedefs, and structs. 16508 16509 The globals "DebugLevel" and "DebugLayer" have been renamed 16510 "AcpiDbgLevel" and "AcpiDbgLayer" respectively. 16511 16512 All other globals within the subsystem are now prefixed with 16513 "AcpiGbl_" Internal procedures within the subsystem are now 16514 prefixed with "Acpi" (with only a few exceptions). The original 16515 two-letter abbreviation for the subcomponent remains after "Acpi" 16516 - for example, CmCallocate became AcpiCmCallocate. 16517 16518 Added a source code translation/conversion utility. Used to 16519 generate the Linux source code, it can be modified to generate 16520 other types of source as well. Can also be used to cleanup 16521 existing source by removing extraneous spaces and blank lines. 16522 Found in tools/acpisrc/* 16523 16524 OsdUnMapMemory was renamed to OsdUnmapMemory and then 16525 AcpiOsUnmapMemory. (UnMap became Unmap). 16526 16527 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 16528 When set to one, this indicates that the caller wants to use the 16529 16530 semaphore as a mutex, not a counting semaphore. ACPI CA uses 16531 both types. However, implementers of this call may want to use 16532 different OS primitives depending on the type of semaphore 16533 requested. For example, some operating systems provide separate 16534 16535 "mutex" and "semaphore" interfaces - where the mutex interface is 16536 much faster because it doesn't have all the overhead of a full 16537 semaphore implementation. 16538 16539 Fixed a deadlock problem where a method that accesses the PCI 16540 address space can block forever if it is the first access to the 16541 space. 16542 16543 ------------------------------------------- 16544 Summary of changes for this label: 06_02_00 16545 16546 Support for environments that cannot handle unaligned data 16547 accesses (e.g. firmware and OS environments devoid of alignment 16548 handler technology namely SAL/EFI and the IA-64 Linux kernel) has 16549 been added (via configurable macros) in these three areas: - 16550 Transfer of data from the raw AML byte stream is done via byte 16551 moves instead of word/dword/qword moves. - External objects are 16552 aligned within the user buffer, including package elements (sub- 16553 objects). - Conversion of name strings to UINT32 Acpi Names is now 16554 done byte-wise. 16555 16556 The Store operator was modified to mimic Microsoft's 16557 implementation when storing to a Buffer Field. 16558 16559 Added a check of the BM_STS bit before entering C3. 16560 16561 The methods subdirectory has been obsoleted and removed. A new 16562 file, cmeval.c subsumes the functionality. 16563 16564 A 16-bit (DOS) version of AcpiExec has been developed. The 16565 makefile is under the acpiexec directory. 16566
Indexes created Tue Sep 30 20:09:53 GMT 2025