1---------------------------------------- 221 May 2009. Summary of changes for version 20090521: 3 4This release is available at www.acpica.org/downloads 5 61) ACPI CA Core Subsystem: 7 8Disabled the preservation of the SCI enable bit in the PM1 control register. 9The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be 10a "preserved" bit - "OSPM always preserves this bit position", section 114.7.3.2.1. However, some machines fail if this bit is in fact preserved 12because the bit needs to be explicitly set by the OS as a workaround. No 13machines fail if the bit is not preserved. Therefore, ACPICA no longer 14attempts to preserve this bit. 15 16Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 17incorrectly formed _PRT package could cause a fault. Added validation to 18ensure that each package element is actually a sub-package. 19 20Implemented a new interface to install or override a single control method, 21AcpiInstallMethod. This interface is useful when debugging in order to repair 22an existing method or to install a missing method without having to override 23the entire ACPI table. See the ACPICA Programmer Reference for use and 24examples. Lin Ming, Bob Moore. 25 26Fixed several reference count issues with the DdbHandle object that is 27created from a Load or LoadTable operator. Prevent premature deletion of the 28object. Also, mark the object as invalid once the table has been unloaded. 29This is needed because the handle itself may not be deleted after the table 30unload, depending on whether it has been stored in a named object by the 31caller. Lin Ming. 32 33Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 34mutexes of the same sync level are acquired but then not released in strict 35opposite order, the internally maintained Current Sync Level becomes confused 36and can cause subsequent execution errors. ACPICA BZ 471. 37 38Changed the allowable release order for ASL mutex objects. The ACPI 4.0 39specification has been changed to make the SyncLevel for mutex objects more 40useful. When releasing a mutex, the SyncLevel of the mutex must now be the 41same as the current sync level. This makes more sense than the previous rule 42(SyncLevel less than or equal). This change updates the code to match the 43specification. 44 45Fixed a problem with the local version of the AcpiOsPurgeCache function. The 46(local) cache must be locked during all cache object deletions. Andrew 47Baumann. 48 49Updated the Load operator to use operation region interfaces. This replaces 50direct memory mapping with region access calls. Now, all region accesses go 51through the installed region handler as they should. 52 53Simplified and optimized the NsGetNextNode function. Reduced parameter count 54and reduced code for this frequently used function. 55 56Example Code and Data Size: These are the sizes for the OS-independent 57acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 58debug version of the code includes the debug output trace mechanism and has a 59much larger code and data size. 60 61 Previous Release: 62 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 63 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 64 Current Release: 65 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 66 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 67 682) iASL Compiler/Disassembler and Tools: 69 70Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems 71with sub-table disassembly and handling invalid sub-tables. Attempt recovery 72after an invalid sub-table ID. 73 74---------------------------------------- 7522 April 2009. Summary of changes for version 20090422: 76 77This release is available at www.acpica.org/downloads 78 791) ACPI CA Core Subsystem: 80 81Fixed a compatibility issue with the recently released I/O port protection 82mechanism. For windows compatibility, 1) On a port protection violation, 83simply ignore the request and do not return an exception (allow the control 84method to continue execution.) 2) If only part of the request overlaps a 85protected port, read/write the individual ports that are not protected. Linux 86BZ 13036. Lin Ming 87 88Enhanced the execution of the ASL/AML BreakPoint operator so that it actually 89breaks into the AML debugger if the debugger is present. This matches the 90ACPI-defined behavior. 91 92Fixed several possible warnings related to the use of the configurable 93ACPI_THREAD_ID. This type can now be configured as either an integer or a 94pointer with no warnings. Also fixes several warnings in printf-like 95statements for the 64-bit build when the type is configured as a pointer. 96ACPICA BZ 766, 767. 97 98Fixed a number of possible warnings when compiling with gcc 4+ (depending on 99warning options.) Examples include printf formats, aliasing, unused globals, 100missing prototypes, missing switch default statements, use of non-ANSI 101library functions, use of non-ANSI constructs. See generate/unix/Makefile for 102a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 103 104Example Code and Data Size: These are the sizes for the OS-independent 105acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 106debug version of the code includes the debug output trace mechanism and has a 107much larger code and data size. 108 109 Previous Release: 110 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 111 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 112 Current Release: 113 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 114 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 115 1162) iASL Compiler/Disassembler and Tools: 117 118iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on 119the 64-bit build. 120 121iASL: Fixed a problem where the Unix/Linux versions of the compiler could not 122correctly digest Windows/DOS formatted files (with CR/LF). 123 124iASL: Added a new option for "quiet mode" (-va) that produces only the 125compilation summary, not individual errors and warnings. Useful for large 126batch compilations. 127 128AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex 129timeout that can be used to detect hang conditions during execution of AML 130code (includes both internal semaphores and AML-defined mutexes and events.) 131 132Added new makefiles for the generation of acpica in a generic unix-like 133environment. These makefiles are intended to generate the acpica tools and 134utilities from the original acpica git source tree structure. 135 136Test Suites: Updated and cleaned up the documentation files. Updated the 137copyrights to 2009, affecting all source files. Use the new version of iASL 138with quiet mode. Increased the number of available semaphores in the Windows 139OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added 140an alternate implementation of the semaphore timeout to allow aslts to 141execute fully on Cygwin. 142 143---------------------------------------- 14420 March 2009. Summary of changes for version 20090320: 145 1461) ACPI CA Core Subsystem: 147 148Fixed a possible race condition between AcpiWalkNamespace and dynamic table 149unloads. Added a reader/writer locking mechanism to allow multiple concurrent 150namespace walks (readers), but block a dynamic table unload until it can gain 151exclusive write access to the namespace. This fixes a problem where a table 152unload could (possibly catastrophically) delete the portion of the namespace 153that is currently being examined by a walk. Adds a new file, utlock.c, that 154implements the reader/writer lock mechanism. ACPICA BZ 749. 155 156Fixed a regression introduced in version 20090220 where a change to the FADT 157handling could cause the ACPICA subsystem to access non-existent I/O ports. 158 159Modified the handling of FADT register and table (FACS/DSDT) addresses. The 160FADT can contain both 32-bit and 64-bit versions of these addresses. 161Previously, the 64-bit versions were favored, meaning that if both 32 and 64 162versions were valid, but not equal, the 64-bit version was used. This was 163found to cause some machines to fail. Now, in this case, the 32-bit version 164is used instead. This now matches the Windows behavior. 165 166Implemented a new mechanism to protect certain I/O ports. Provides Microsoft 167compatibility and protects the standard PC I/O ports from access via AML 168code. Adds a new file, hwvalid.c 169 170Fixed a possible extraneous warning message from the FADT support. The 171message warns of a 32/64 length mismatch between the legacy and GAS 172definitions for a register. 173 174Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is 175made obsolete by the port protection mechanism above. It was previously used 176to validate the entire address range of an operation region, which could be 177incorrect if the range included illegal ports, but fields within the 178operation region did not actually access those ports. Validation is now 179performed on a per-field basis instead of the entire region. 180 181Modified the handling of the PM1 Status Register ignored bit (bit 11.) 182Ignored bits must be "preserved" according to the ACPI spec. Usually, this 183means a read/modify/write when writing to the register. However, for status 184registers, writing a one means clear the event. Writing a zero means preserve 185the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec, 186and the ACPICA code now simply always writes a zero to the ignored bit. 187 188Modified the handling of ignored bits for the PM1 A/B Control Registers. As 189per the ACPI specification, for the control registers, preserve 190(read/modify/write) all bits that are defined as either reserved or ignored. 191 192Updated the handling of write-only bits in the PM1 A/B Control Registers. 193When reading the register, zero the write-only bits as per the ACPI spec. 194ACPICA BZ 443. Lin Ming. 195 196Removed "Linux" from the list of supported _OSI strings. Linux no longer 197wants to reply true to this request. The Windows strings are the only paths 198through the AML that are tested and known to work properly. 199 200 Previous Release: 201 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 202 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 203 Current Release: 204 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 205 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 206 2072) iASL Compiler/Disassembler and Tools: 208 209Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and 210aetables.c 211 212---------------------------------------- 21320 February 2009. Summary of changes for version 20090220: 214 2151) ACPI CA Core Subsystem: 216 217Optimized the ACPI register locking. Removed locking for reads from the ACPI 218bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is 219not required when reading the single-bit registers. The 220AcpiGetRegisterUnlocked function is no longer needed and has been removed. 221This will improve performance for reads on these registers. ACPICA BZ 760. 222 223Fixed the parameter validation for AcpiRead/Write. Now return 224AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if 225the register has an address of zero. Previously, these cases simply returned 226AE_OK. For optional registers such as PM1B status/enable/control, the caller 227should check for a valid register address before calling. ACPICA BZ 748. 228 229Renamed the external ACPI bit register access functions. Renamed 230AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 231functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister. 232Also, restructured the code for these functions by simplifying the code path 233and condensing duplicate code to reduce code size. 234 235Added new functions to transparently handle the possibly split PM1 A/B 236registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions 237now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ 238746. 239 240Added a function to handle the PM1 control registers, AcpiHwWritePm1Control. 241This function writes both of the PM1 control registers (A/B). These registers 242are different than the PM1 A/B status and enable registers in that different 243values can be written to the A/B registers. Most notably, the SLP_TYP bits 244can be different, as per the values returned from the _Sx predefined methods. 245 246Removed an extra register write within AcpiHwClearAcpiStatus. This function 247was writing an optional PM1B status register twice. The existing call to the 248low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B 249register. ACPICA BZ 751. 250 251Split out the PM1 Status registers from the FADT. Added new globals for these 252registers (A/B), similar to the way the PM1 Enable registers are handled. 253Instead of overloading the FADT Event Register blocks. This makes the code 254clearer and less prone to error. 255 256Fixed the warning message for when the platform contains too many ACPI tables 257for the default size of the global root table data structure. The calculation 258for the truncation value was incorrect. 259 260Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 261obsolete macro, since it is now a simple reference to ->common.type. There 262were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 263 264Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 265TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 266simply SLEEP_TYPE. ACPICA BZ 754. 267 268Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 269function is only needed on 64-bit host operating systems and is thus not 270included for 32-bit hosts. 271 272Debug output: print the input and result for invocations of the _OSI reserved 273control method via the ACPI_LV_INFO debug level. Also, reduced some of the 274verbosity of this debug level. Len Brown. 275 276Example Code and Data Size: These are the sizes for the OS-independent 277acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 278debug version of the code includes the debug output trace mechanism and has a 279much larger code and data size. 280 281 Previous Release: 282 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 283 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 284 Current Release: 285 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 286 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 287 2882) iASL Compiler/Disassembler and Tools: 289 290Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 291various legal performance profiles. 292 293---------------------------------------- 29423 January 2009. Summary of changes for version 20090123: 295 2961) ACPI CA Core Subsystem: 297 298Added the 2009 copyright to all module headers and signons. This affects 299virtually every file in the ACPICA core subsystem, the iASL compiler, and 300the tools/utilities. 301 302Implemented a change to allow the host to override any ACPI table, including 303dynamically loaded tables. Previously, only the DSDT could be replaced by the 304host. With this change, the AcpiOsTableOverride interface is called for each 305table found in the RSDT/XSDT during ACPICA initialization, and also whenever 306a table is dynamically loaded via the AML Load operator. 307 308Updated FADT flag definitions, especially the Boot Architecture flags. 309 310Debugger: For the Find command, automatically pad the input ACPI name with 311underscores if the name is shorter than 4 characters. This enables a match 312with the actual namespace entry which is itself padded with underscores. 313 314Example Code and Data Size: These are the sizes for the OS-independent 315acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 316debug version of the code includes the debug output trace mechanism and has a 317much larger code and data size. 318 319 Previous Release: 320 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 321 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 322 Current Release: 323 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 324 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 325 3262) iASL Compiler/Disassembler and Tools: 327 328Fix build error under Bison-2.4. 329 330Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture 331flags. Now decode all flags, regardless of the FADT version. Flag output 332includes the FADT version which first defined each flag. 333 334The iASL -g option now dumps the RSDT to a file (in addition to the FADT and 335DSDT). Windows only. 336 337---------------------------------------- 33804 December 2008. Summary of changes for version 20081204: 339 3401) ACPI CA Core Subsystem: 341 342The ACPICA Programmer Reference has been completely updated and revamped for 343this release. This includes updates to the external interfaces, OSL 344interfaces, the overview sections, and the debugger reference. 345 346Several new ACPICA interfaces have been implemented and documented in the 347programmer reference: 348AcpiReset - Writes the reset value to the FADT-defined reset register. 349AcpiDisableAllGpes - Disable all available GPEs. 350AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 351AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 352AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 353AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 354AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 355 356Most of the public ACPI hardware-related interfaces have been moved to a new 357file, components/hardware/hwxface.c 358 359Enhanced the FADT parsing and low-level ACPI register access: The ACPI 360register lengths within the FADT are now used, and the low level ACPI 361register access no longer hardcodes the ACPI register lengths. Given that 362there may be some risk in actually trusting the FADT register lengths, a run- 363time option was added to fall back to the default hardcoded lengths if the 364FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 365option is set to true for now, and a warning is issued if a suspicious FADT 366register length is overridden with the default value. 367 368Fixed a reference count issue in NsRepairObject. This problem was introduced 369in version 20081031 as part of a fix to repair Buffer objects within 370Packages. Lin Ming. 371 372Added semaphore support to the Linux/Unix application OS-services layer 373(OSL). ACPICA BZ 448. Lin Ming. 374 375Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will 376be implemented in the OSL, or will binary semaphores be used instead. 377 378Example Code and Data Size: These are the sizes for the OS-independent 379acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 380debug version of the code includes the debug output trace mechanism and has a 381much larger code and data size. 382 383 Previous Release: 384 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 385 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 386 Current Release: 387 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 388 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 389 3902) iASL Compiler/Disassembler and Tools: 391 392iASL: Completed the '-e' option to include additional ACPI tables in order to 393aid with disassembly and External statement generation. ACPICA BZ 742. Lin 394Ming. 395 396iASL: Removed the "named object in while loop" error. The compiler cannot 397determine how many times a loop will execute. ACPICA BZ 730. 398 399Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA 400BZ 743. 401 402Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG). 403 404---------------------------------------- 40531 October 2008. Summary of changes for version 20081031: 406 4071) ACPI CA Core Subsystem: 408 409Restructured the ACPICA header files into public/private. acpi.h now includes 410only the "public" acpica headers. All other acpica headers are "private" and 411should not be included by acpica users. One new file, accommon.h is used to 412include the commonly used private headers for acpica code generation. Future 413plans include moving all private headers to a new subdirectory. 414 415Implemented an automatic Buffer->String return value conversion for 416predefined ACPI methods. For these methods (such as _BIF), added automatic 417conversion for return objects that are required to be a String, but a Buffer 418was found instead. This can happen when reading string battery data from an 419operation region, because it used to be difficult to convert the data from 420buffer to string from within the ASL. Ensures that the host OS is provided 421with a valid null-terminated string. Linux BZ 11822. 422 423Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector 424into two: one for the 32-bit vector, another for the 64-bit vector. This is 425required because the host OS must setup the wake much differently for each 426vector (real vs. protected mode, etc.) and the interface itself should not be 427deciding which vector to use. Also, eliminated the GetFirmwareWakingVector 428interface, as it served no purpose (only the firmware reads the vector, OS 429only writes the vector.) ACPICA BZ 731. 430 431Implemented a mechanism to escape infinite AML While() loops. Added a loop 432counter to force exit from AML While loops if the count becomes too large. 433This can occur in poorly written AML when the hardware does not respond 434within a while loop and the loop does not implement a timeout. The maximum 435loop count is configurable. A new exception code is returned when a loop is 436broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 437 438Optimized the execution of AML While loops. Previously, a control state 439object was allocated and freed for each execution of the loop. The 440optimization is to simply reuse the control state for each iteration. This 441speeds up the raw loop execution time by about 5%. 442 443Enhanced the implicit return mechanism. For Windows compatibility, return an 444implicit integer of value zero for methods that contain no executable code. 445Such methods are seen in the field as stubs (presumably), and can cause 446drivers to fail if they expect a return value. Lin Ming. 447 448Allow multiple backslashes as root prefixes in namepaths. In a fully 449qualified namepath, allow multiple backslash prefixes. This can happen (and 450is seen in the field) because of the use of a double-backslash in strings 451(since backslash is the escape character) causing confusion. ACPICA BZ 739 452Lin Ming. 453 454Emit a warning if two different FACS or DSDT tables are discovered in the 455FADT. Checks if there are two valid but different addresses for the FACS and 456DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 457 458Consolidated the method argument count validation code. Merged the code that 459validates control method argument counts into the predefined validation 460module. Eliminates possible multiple warnings for incorrect argument counts. 461 462Implemented ACPICA example code. Includes code for ACPICA initialization, 463handler installation, and calling a control method. Available at 464source/tools/examples. 465 466Added a global pointer for FACS table to simplify internal FACS access. Use 467the global pointer instead of using AcpiGetTableByIndex for each FACS access. 468This simplifies the code for the Global Lock and the Firmware Waking 469Vector(s). 470 471Example Code and Data Size: These are the sizes for the OS-independent 472acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 473debug version of the code includes the debug output trace mechanism and has a 474much larger code and data size. 475 476 Previous Release: 477 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 478 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 479 Current Release: 480 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 481 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 482 4832) iASL Compiler/Disassembler and Tools: 484 485iASL: Improved disassembly of external method calls. Added the -e option to 486allow the inclusion of additional ACPI tables to help with the disassembly of 487method invocations and the generation of external declarations during the 488disassembly. Certain external method invocations cannot be disassembled 489properly without the actual declaration of the method. Use the -e option to 490include the table where the external method(s) are actually declared. Most 491useful for disassembling SSDTs that make method calls back to the master 492DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d 493-e dsdt.aml ssdt1.aml 494 495iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 496problem where the use of an alias within a namepath would result in a not 497found error or cause the compiler to fault. Also now allows forward 498references from the Alias operator itself. ACPICA BZ 738. 499 500---------------------------------------- 50126 September 2008. Summary of changes for version 20080926: 502 5031) ACPI CA Core Subsystem: 504 505Designed and implemented a mechanism to validate predefined ACPI methods and 506objects. This code validates the predefined ACPI objects (objects whose names 507start with underscore) that appear in the namespace, at the time they are 508evaluated. The argument count and the type of the returned object are 509validated against the ACPI specification. The purpose of this validation is 510to detect problems with the BIOS-implemented predefined ACPI objects before 511the results are returned to the ACPI-related drivers. Future enhancements may 512include actual repair of incorrect return objects where possible. Two new 513files are nspredef.c and acpredef.h. 514 515Fixed a fault in the AML parser if a memory allocation fails during the Op 516completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 517 518Fixed an issue with implicit return compatibility. This change improves the 519implicit return mechanism to be more compatible with the MS interpreter. Lin 520Ming, ACPICA BZ 349. 521 522Implemented support for zero-length buffer-to-string conversions. Allow zero 523length strings during interpreter buffer-to-string conversions. For example, 524during the ToDecimalString and ToHexString operators, as well as implicit 525conversions. Fiodor Suietov, ACPICA BZ 585. 526 527Fixed two possible memory leaks in the error exit paths of 528AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are 529similar in that they use a stack of state objects in order to eliminate 530recursion. The stack must be fully unwound and deallocated if an error 531occurs. Lin Ming. ACPICA BZ 383. 532 533Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global 534ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 535Moore ACPICA BZ 442. 536 537Removed the obsolete version number in module headers. Removed the 538"$Revision" number that appeared in each module header. This version number 539was useful under SourceSafe and CVS, but has no meaning under git. It is not 540only incorrect, it could also be misleading. 541 542Example Code and Data Size: These are the sizes for the OS-independent 543acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 544debug version of the code includes the debug output trace mechanism and has a 545much larger code and data size. 546 547 Previous Release: 548 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 549 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 550 Current Release: 551 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 552 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 553 554---------------------------------------- 55529 August 2008. Summary of changes for version 20080829: 556 5571) ACPI CA Core Subsystem: 558 559Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 560Reference. Changes include the elimination of cheating on the Object field 561for the DdbHandle subtype, addition of a reference class field to 562differentiate the various reference types (instead of an AML opcode), and the 563cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 564 565Reduce an error to a warning for an incorrect method argument count. 566Previously aborted with an error if too few arguments were passed to a 567control method via the external ACPICA interface. Now issue a warning instead 568and continue. Handles the case where the method inadvertently declares too 569many arguments, but does not actually use the extra ones. Applies mainly to 570the predefined methods. Lin Ming. Linux BZ 11032. 571 572Disallow the evaluation of named object types with no intrinsic value. Return 573AE_TYPE for objects that have no value and therefore evaluation is undefined: 574Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of 575these types were allowed, but an exception would be generated at some point 576during the evaluation. Now, the error is generated up front. 577 578Fixed a possible memory leak in the AcpiNsGetExternalPathname function 579(nsnames.c). Fixes a leak in the error exit path. 580 581Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug 582levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION 583interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 584ACPI_LV_EVENTS. 585 586Removed obsolete and/or unused exception codes from the acexcep.h header. 587There is the possibility that certain device drivers may be affected if they 588use any of these exceptions. 589 590The ACPICA documentation has been added to the public git source tree, under 591acpica/documents. Included are the ACPICA programmer reference, the iASL 592compiler reference, and the changes.txt release logfile. 593 594Example Code and Data Size: These are the sizes for the OS-independent 595acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 596debug version of the code includes the debug output trace mechanism and has a 597much larger code and data size. 598 599 Previous Release: 600 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 601 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 602 Current Release: 603 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 604 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 605 6062) iASL Compiler/Disassembler and Tools: 607 608Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 609defines _SCP with 3 arguments. Previous versions defined it with only 1 610argument. iASL now allows both definitions. 611 612iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero- 613length subtables when disassembling ACPI tables. Also fixed a couple of 614errors where a full 16-bit table type field was not extracted from the input 615properly. 616 617acpisrc: Improve comment counting mechanism for generating source code 618statistics. Count first and last lines of multi-line comments as whitespace, 619not comment lines. Handle Linux legal header in addition to standard acpica 620header. 621 622---------------------------------------- 623 62429 July 2008. Summary of changes for version 20080729: 625 626This release is available at http://acpica.org/downloads 627Direct git access via http://www.acpica.org/repos/acpica.git 628 6291) ACPI CA Core Subsystem: 630 631Fix a possible deadlock in the GPE dispatch. Remove call to 632AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt 633to acquire the GPE lock but can deadlock since the GPE lock is already held 634at dispatch time. This code was introduced in version 20060831 as a response 635to Linux BZ 6881 and has since been removed from Linux. 636 637Add a function to dereference returned reference objects. Examines the return 638object from a call to AcpiEvaluateObject. Any Index or RefOf references are 639automatically dereferenced in an attempt to return something useful (these 640reference types cannot be converted into an external ACPI_OBJECT.) Provides 641MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 642 643x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 644subtables for the MADT and one new subtable for the SRAT. Includes 645disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC 646Specification, June 2008. 647 648Additional error checking for pathname utilities. Add error check after all 649calls to AcpiNsGetPathnameLength. Add status return from 650AcpiNsBuildExternalPath and check after all calls. Add parameter validation 651to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 652 653Return status from the global init function AcpiUtGlobalInitialize. This is 654used by both the kernel subsystem and the utilities such as iASL compiler. 655The function could possibly fail when the caches are initialized. Yang Yi. 656 657Add a function to decode reference object types to strings. Created for 658improved error messages. 659 660Improve object conversion error messages. Better error messages during object 661conversion from internal to the external ACPI_OBJECT. Used for external calls 662to AcpiEvaluateObject. 663 664Example Code and Data Size: These are the sizes for the OS-independent 665acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 666debug version of the code includes the debug output trace mechanism and has a 667much larger code and data size. 668 669 Previous Release: 670 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 671 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 672 Current Release: 673 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 674 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 675 6762) iASL Compiler/Disassembler and Tools: 677 678Debugger: fix a possible hang when evaluating non-methods. Fixes a problem 679introduced in version 20080701. If the object being evaluated (via execute 680command) is not a method, the debugger can hang while trying to obtain non- 681existent parameters. 682 683iASL: relax error for using reserved "_T_x" identifiers. These names can 684appear in a disassembled ASL file if they were emitted by the original 685compiler. Instead of issuing an error or warning and forcing the user to 686manually change these names, issue a remark instead. 687 688iASL: error if named object created in while loop. Emit an error if any named 689object is created within a While loop. If allowed, this code will generate a 690run-time error on the second iteration of the loop when an attempt is made to 691create the same named object twice. ACPICA bugzilla 730. 692 693iASL: Support absolute pathnames for include files. Add support for absolute 694pathnames within the Include operator. previously, only relative pathnames 695were supported. 696 697iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor. 698The ACPI spec requires one interrupt minimum. BZ 423 699 700iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 701Handles the case for the Interrupt Resource Descriptor where 702the ResourceSource argument is omitted but ResourceSourceIndex 703is present. Now leave room for the Index. BZ 426 704 705iASL: Prevent error message if CondRefOf target does not exist. Fixes cases 706where an error message is emitted if the target does not exist. BZ 516 707 708iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 709(get ACPI tables on Windows). This was apparently broken in version 20070919. 710 711AcpiXtract: Handle EOF while extracting data. Correctly handle the case where 712the EOF happens immediately after the last table in the input file. Print 713completion message. Previously, no message was displayed in this case. 714 715---------------------------------------- 71601 July 2008. Summary of changes for version 20080701: 717 718This release is available at http://acpica.org/downloads 719Direct git access via http://www.acpica.org/repos/acpica.git 720 7210) Git source tree / acpica.org 722 723Fixed a problem where a git-clone from http would not transfer the entire 724source tree. 725 7261) ACPI CA Core Subsystem: 727 728Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 729enable bit. Now performs a read-change-write of the enable register instead 730of simply writing out the cached enable mask. This will prevent inadvertent 731enabling of GPEs if a rogue GPE is received during initialization (before GPE 732handlers are installed.) 733 734Implemented a copy for dynamically loaded tables. Previously, dynamically 735loaded tables were simply mapped - but on some machines this memory is 736corrupted after suspend. Now copy the table to a local buffer. For the 737OpRegion case, added checksum verify. Use the table length from the table 738header, not the region length. For the Buffer case, use the table length 739also. Dennis Noordsij, Bob Moore. BZ 10734 740 741Fixed a problem where the same ACPI table could not be dynamically loaded and 742unloaded more than once. Without this change, a table cannot be loaded again 743once it has been loaded/unloaded one time. The current mechanism does not 744unregister a table upon an unload. During a load, if the same table is found, 745this no longer returns an exception. BZ 722 746 747Fixed a problem where the wrong descriptor length was calculated for the 748EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag 749are calculated as 12 bytes long, but the actual length in the internal 750descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported 751by Linn Crosetto. BZ 728 752 753Fixed a possible memory leak in the Unload operator. The DdbHandle returned 754by Load() did not have its reference count decremented during unload, leading 755to a memory leak. Lin Ming. BZ 727 756 757Fixed a possible memory leak when deleting thermal/processor objects. Any 758associated notify handlers (and objects) were not being deleted. Fiodor 759Suietov. BZ 506 760 761Fixed the ordering of the ASCII names in the global mutex table to match the 762actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only. 763Vegard Nossum. BZ 726 764 765Enhanced the AcpiGetObjectInfo interface to return the number of required 766arguments if the object is a control method. Added this call to the debugger 767so the proper number of default arguments are passed to a method. This 768prevents a warning when executing methods from AcpiExec. 769 770Added a check for an invalid handle in AcpiGetObjectInfo. Return 771AE_BAD_PARAMETER if input handle is invalid. BZ 474 772 773Fixed an extraneous warning from exconfig.c on the 64-bit build. 774 775Example Code and Data Size: These are the sizes for the OS-independent 776acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 777debug version of the code includes the debug output trace mechanism and has a 778much larger code and data size. 779 780 Previous Release: 781 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 782 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 783 Current Release: 784 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 785 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 786 7872) iASL Compiler/Disassembler and Tools: 788 789iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 790resource descriptor names. 791 792iASL: Detect invalid ASCII characters in input (windows version). Removed the 793"-CF" flag from the flex compile, enables correct detection of non-ASCII 794characters in the input. BZ 441 795 796iASL: Eliminate warning when result of LoadTable is not used. Eliminate the 797"result of operation not used" warning when the DDB handle returned from 798LoadTable is not used. The warning is not needed. BZ 590 799 800AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to 801pass address of table to the AML. Added option to disable OpRegion simulation 802to allow creation of an OpRegion with a real address that was passed to _CFG. 803All of this allows testing of the Load and Unload operators from AcpiExec. 804 805Debugger: update tables command for unloaded tables. Handle unloaded tables 806and use the standard table header output routine. 807 808---------------------------------------- 80909 June 2008. Summary of changes for version 20080609: 810 8111) ACPI CA Core Subsystem: 812 813Implemented a workaround for reversed _PRT entries. A significant number of 814BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 815change dynamically detects and repairs this problem. Provides compatibility 816with MS ACPI. BZ 6859 817 818Simplified the internal ACPI hardware interfaces to eliminate the locking 819flag parameter from Register Read/Write. Added a new external interface, 820AcpiGetRegisterUnlocked. 821 822Fixed a problem where the invocation of a GPE control method could hang. This 823was a regression introduced in 20080514. The new method argument count 824validation mechanism can enter an infinite loop when a GPE method is 825dispatched. Problem fixed by removing the obsolete code that passed GPE block 826information to the notify handler via the control method parameter pointer. 827 828Fixed a problem where the _SST execution status was incorrectly returned to 829the caller of AcpiEnterSleepStatePrep. This was a regression introduced in 83020080514. _SST is optional and a NOT_FOUND exception should never be 831returned. BZ 716 832 833Fixed a problem where a deleted object could be accessed from within the AML 834parser. This was a regression introduced in version 20080123 as a fix for the 835Unload operator. Lin Ming. BZ 10669 836 837Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands 838and eliminated the use of a negative index in a loop. Operands are now 839displayed in the correct order, not backwards. This also fixes a regression 840introduced in 20080514 on 64-bit systems where the elimination of 841ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715 842 843Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit 844path did not delete a locally allocated structure. 845 846Updated definitions for the DMAR and SRAT tables to synchronize with the 847current specifications. Includes disassembler support. 848 849Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 850loop termination value was used. Loop terminated on iteration early, missing 851one mutex. Linn Crosetto 852 853Example Code and Data Size: These are the sizes for the OS-independent 854acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 855debug version of the code includes the debug output trace mechanism and has a 856much larger code and data size. 857 858 Previous Release: 859 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 860 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 861 Current Release: 862 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 863 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 864 8652) iASL Compiler/Disassembler and Tools: 866 867Disassembler: Implemented support for EisaId() within _CID objects. Now 868disassemble integer _CID objects back to EisaId invocations, including 869multiple integers within _CID packages. Includes single-step support for 870debugger also. 871 872Disassembler: Added support for DMAR and SRAT table definition changes. 873 874---------------------------------------- 87514 May 2008. Summary of changes for version 20080514: 876 8771) ACPI CA Core Subsystem: 878 879Fixed a problem where GPEs were enabled too early during the ACPICA 880initialization. This could lead to "handler not installed" errors on some 881machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This 882ensures that all operation regions and devices throughout the namespace have 883been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 884 885Implemented a change to the enter sleep code. Moved execution of the _GTS 886method to just before setting sleep enable bit. The execution was moved from 887AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 888immediately before the SLP_EN bit is set, as per the ACPI specification. 889Luming Yu, BZ 1653. 890 891Implemented a fix to disable unknown GPEs (2nd version). Now always disable 892the GPE, even if ACPICA thinks that that it is already disabled. It is 893possible that the AML or some other code has enabled the GPE unbeknownst to 894the ACPICA code. 895 896Fixed a problem with the Field operator where zero-length fields would return 897an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL 898field declarations in Field(), BankField(), and IndexField(). BZ 10606. 899 900Implemented a fix for the Load operator, now load the table at the namespace 901root. This reverts a change introduced in version 20071019. The table is now 902loaded at the namespace root even though this goes against the ACPI 903specification. This provides compatibility with other ACPI implementations. 904The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming. 905 906Fixed a problem where ACPICA would not Load() tables with unusual signatures. 907Now ignore ACPI table signature for Load() operator. Only "SSDT" is 908acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 909Therefore, signature validation is worthless. Apparently MS ACPI accepts such 910signatures, ACPICA must be compatible. BZ 10454. 911 912Fixed a possible negative array index in AcpiUtValidateException. Added NULL 913fields to the exception string arrays to eliminate a -1 subtraction on the 914SubStatus field. 915 916Updated the debug tracking macros to reduce overall code and data size. 917Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 918instead of pointers to static strings. Jan Beulich and Bob Moore. 919 920Implemented argument count checking in control method invocation via 921AcpiEvaluateObject. Now emit an error if too few arguments, warning if too 922many. This applies only to extern programmatic control method execution, not 923method-to-method calls within the AML. Lin Ming. 924 925Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no 926longer needed, especially with the removal of 16-bit support. It was replaced 927mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on 92832/64-bit platforms is required. 929 930Added the C const qualifier for appropriate string constants -- mostly 931MODULE_NAME and printf format strings. Jan Beulich. 932 933Example Code and Data Size: These are the sizes for the OS-independent 934acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 935debug version of the code includes the debug output trace mechanism and has a 936much larger code and data size. 937 938 Previous Release: 939 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 940 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 941 Current Release: 942 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 943 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 944 9452) iASL Compiler/Disassembler and Tools: 946 947Implemented ACPI table revision ID validation in the disassembler. Zero is 948always invalid. For DSDTs, the ID controls the interpreter integer width. 1 949means 32-bit and this is unusual. 2 or greater is 64-bit. 950 951---------------------------------------- 95221 March 2008. Summary of changes for version 20080321: 953 9541) ACPI CA Core Subsystem: 955 956Implemented an additional change to the GPE support in order to suppress 957spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently 958disable incoming GPEs that are neither enabled nor disabled -- meaning that 959the GPE is unknown to the system. This should prevent future interrupt floods 960from that GPE. BZ 6217 (Zhang Rui) 961 962Fixed a problem where NULL package elements were not returned to the 963AcpiEvaluateObject interface correctly. The element was simply ignored 964instead of returning a NULL ACPI_OBJECT package element, potentially causing 965a buffer overflow and/or confusing the caller who expected a fixed number of 966elements. BZ 10132 (Lin Ming, Bob Moore) 967 968Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword, 969Qword), Field, BankField, and IndexField operators when invoked from inside 970an executing control method. In this case, these operators created namespace 971nodes that were incorrectly left marked as permanent nodes instead of 972temporary nodes. This could cause a problem if there is race condition 973between an exiting control method and a running namespace walk. (Reported by 974Linn Crosetto) 975 976Fixed a problem where the CreateField and CreateXXXField operators would 977incorrectly allow duplicate names (the name of the field) with no exception 978generated. 979 980Implemented several changes for Notify handling. Added support for new Notify 981values (ACPI 2.0+) and improved the Notify debug output. Notify on 982PowerResource objects is no longer allowed, as per the ACPI specification. 983(Bob Moore, Zhang Rui) 984 985All Reference Objects returned via the AcpiEvaluateObject interface are now 986marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for 987NULL objects - either NULL package elements or unresolved named references. 988 989Fixed a problem where an extraneous debug message was produced for package 990objects (when debugging enabled). The message "Package List length larger 991than NumElements count" is now produced in the correct case, and is now an 992error message rather than a debug message. Added a debug message for the 993opposite case, where NumElements is larger than the Package List (the package 994will be padded out with NULL elements as per the ACPI spec.) 995 996Implemented several improvements for the output of the ASL "Debug" object to 997clarify and keep all data for a given object on one output line. 998 999Fixed two size calculation issues with the variable-length Start Dependent 1000resource descriptor. 1001 1002Example Code and Data Size: These are the sizes for the OS-independent 1003acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1004debug version of the code includes the debug output trace mechanism and has 1005a much larger code and data size. 1006 1007 Previous Release: 1008 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 1009 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 1010 Current Release: 1011 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 1012 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 1013 10142) iASL Compiler/Disassembler and Tools: 1015 1016Fixed a problem with the use of the Switch operator where execution of the 1017containing method by multiple concurrent threads could cause an 1018AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 1019actual Switch opcode, it must be simulated with local named temporary 1020variables and if/else pairs. The solution chosen was to mark any method that 1021uses Switch as Serialized, thus preventing multiple thread entries. BZ 469. 1022 1023---------------------------------------- 102413 February 2008. Summary of changes for version 20080213: 1025 10261) ACPI CA Core Subsystem: 1027 1028Implemented another MS compatibility design change for GPE/Notify handling. 1029GPEs are now cleared/enabled asynchronously to allow all pending notifies to 1030complete first. It is expected that the OSL will queue the enable request 1031behind all pending notify requests (may require changes to the local host OSL 1032in AcpiOsExecute). Alexey Starikovskiy. 1033 1034Fixed a problem where buffer and package objects passed as arguments to a 1035control method via the external AcpiEvaluateObject interface could cause an 1036AE_AML_INTERNAL exception depending on the order and type of operators 1037executed by the target control method. 1038 1039Fixed a problem where resource descriptor size optimization could cause a 1040problem when a _CRS resource template is passed to a _SRS method. The _SRS 1041resource template must use the same descriptors (with the same size) as 1042returned from _CRS. This change affects the following resource descriptors: 1043IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487) 1044 1045Fixed a problem where a CopyObject to RegionField, BankField, and IndexField 1046objects did not perform an implicit conversion as it should. These types must 1047retain their initial type permanently as per the ACPI specification. However, 1048a CopyObject to all other object types should not perform an implicit 1049conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 1050 1051Fixed a problem with the AcpiGetDevices interface where the mechanism to 1052match device CIDs did not examine the entire list of available CIDs, but 1053instead aborted on the first non-matching CID. Andrew Patterson. 1054 1055Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was 1056inadvertently changed to return a 16-bit value instead of a 32-bit value, 1057truncating the upper dword of a 64-bit value. This macro is only used to 1058display debug output, so no incorrect calculations were made. Also, 1059reimplemented the macro so that a 64-bit shift is not performed by 1060inefficient compilers. 1061 1062Added missing va_end statements that should correspond with each va_start 1063statement. 1064 1065Example Code and Data Size: These are the sizes for the OS-independent 1066acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1067debug version of the code includes the debug output trace mechanism and has 1068a much larger code and data size. 1069 1070 Previous Release: 1071 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 1072 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 1073 Current Release: 1074 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 1075 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 1076 10772) iASL Compiler/Disassembler and Tools: 1078 1079Implemented full disassembler support for the following new ACPI tables: 1080BERT, EINJ, and ERST. Implemented partial disassembler support for the 1081complicated HEST table. These tables support the Windows Hardware Error 1082Architecture (WHEA). 1083 1084---------------------------------------- 108523 January 2008. Summary of changes for version 20080123: 1086 10871) ACPI CA Core Subsystem: 1088 1089Added the 2008 copyright to all module headers and signons. This affects 1090virtually every file in the ACPICA core subsystem, the iASL compiler, and 1091the tools/utilities. 1092 1093Fixed a problem with the SizeOf operator when used with Package and Buffer 1094objects. These objects have deferred execution for some arguments, and the 1095execution is now completed before the SizeOf is executed. This problem caused 1096unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ 10979558 1098 1099Implemented an enhancement to the interpreter "slack mode". In the absence of 1100an explicit return or an implicitly returned object from the last executed 1101opcode, a control method will now implicitly return an integer of value 0 for 1102Microsoft compatibility. (Lin Ming) BZ 392 1103 1104Fixed a problem with the Load operator where an exception was not returned in 1105the case where the table is already loaded. (Lin Ming) BZ 463 1106 1107Implemented support for the use of DDBHandles as an Indexed Reference, as per 1108the ACPI spec. (Lin Ming) BZ 486 1109 1110Implemented support for UserTerm (Method invocation) for the Unload operator 1111as per the ACPI spec. (Lin Ming) BZ 580 1112 1113Fixed a problem with the LoadTable operator where the OemId and OemTableId 1114input strings could cause unexpected failures if they were shorter than the 1115maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 1116 1117Implemented support for UserTerm (Method invocation) for the Unload operator 1118as per the ACPI spec. (Lin Ming) BZ 580 1119 1120Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST, 1121IBFT, UEFI, WDAT. Disassembler support is forthcoming. 1122 1123Example Code and Data Size: These are the sizes for the OS-independent 1124acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1125debug version of the code includes the debug output trace mechanism and has 1126a much larger code and data size. 1127 1128 Previous Release: 1129 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 1130 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 1131 Current Release: 1132 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 1133 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 1134 11352) iASL Compiler/Disassembler and Tools: 1136 1137Implemented support in the disassembler for checksum validation on incoming 1138binary DSDTs and SSDTs. If incorrect, a message is displayed within the table 1139header dump at the start of the disassembly. 1140 1141Implemented additional debugging information in the namespace listing file 1142created during compilation. In addition to the namespace hierarchy, the full 1143pathname to each namespace object is displayed. 1144 1145Fixed a problem with the disassembler where invalid ACPI tables could cause 1146faults or infinite loops. 1147 1148Fixed an unexpected parse error when using the optional "parameter types" 1149list in a control method declaration. (Lin Ming) BZ 397 1150 1151Fixed a problem where two External declarations with the same name did not 1152cause an error (Lin Ming) BZ 509 1153 1154Implemented support for full TermArgs (adding Argx, Localx and method 1155invocation) for the ParameterData parameter to the LoadTable operator. (Lin 1156Ming) BZ 583,587 1157 1158---------------------------------------- 115919 December 2007. Summary of changes for version 20071219: 1160 11611) ACPI CA Core Subsystem: 1162 1163Implemented full support for deferred execution for the TermArg string 1164arguments for DataTableRegion. This enables forward references and full 1165operand resolution for the three string arguments. Similar to OperationRegion 1166deferred argument execution.) Lin Ming. BZ 430 1167 1168Implemented full argument resolution support for the BankValue argument to 1169BankField. Previously, only constants were supported, now any TermArg may be 1170used. Lin Ming BZ 387, 393 1171 1172Fixed a problem with AcpiGetDevices where the search of a branch of the 1173device tree could be terminated prematurely. In accordance with the ACPI 1174specification, the search down the current branch is terminated if a device 1175is both not present and not functional (instead of just not present.) Yakui 1176Zhao. 1177 1178Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if 1179the underlying AML code changed the GPE enable registers. Now, any unknown 1180incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled 1181instead of simply ignored. Rui Zhang. 1182 1183Fixed a problem with Index Fields where the Index register was incorrectly 1184limited to a maximum of 32 bits. Now any size may be used. 1185 1186Fixed a couple memory leaks associated with "implicit return" objects when 1187the AML Interpreter slack mode is enabled. Lin Ming BZ 349 1188 1189Example Code and Data Size: These are the sizes for the OS-independent 1190acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1191debug version of the code includes the debug output trace mechanism and has 1192a much larger code and data size. 1193 1194 Previous Release: 1195 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 1196 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 1197 Current Release: 1198 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 1199 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 1200 1201---------------------------------------- 120214 November 2007. Summary of changes for version 20071114: 1203 12041) ACPI CA Core Subsystem: 1205 1206Implemented event counters for each of the Fixed Events, the ACPI SCI 1207(interrupt) itself, and control methods executed. Named 1208AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These 1209should be useful for debugging and statistics. 1210 1211Implemented a new external interface, AcpiGetStatistics, to retrieve the 1212contents of the various event counters. Returns the current values for 1213AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 1214AcpiMethodCount. The interface can be expanded in the future if new counters 1215are added. Device drivers should use this interface rather than access the 1216counters directly. 1217 1218Fixed a problem with the FromBCD and ToBCD operators. With some compilers, 1219the ShortDivide function worked incorrectly, causing problems with the BCD 1220functions with large input values. A truncation from 64-bit to 32-bit 1221inadvertently occurred. Internal BZ 435. Lin Ming 1222 1223Fixed a problem with Index references passed as method arguments. References 1224passed as arguments to control methods were dereferenced immediately (before 1225control was passed to the called method). The references are now correctly 1226passed directly to the called method. BZ 5389. Lin Ming 1227 1228Fixed a problem with CopyObject used in conjunction with the Index operator. 1229The reference was incorrectly dereferenced before the copy. The reference is 1230now correctly copied. BZ 5391. Lin Ming 1231 1232Fixed a problem with Control Method references within Package objects. These 1233references are now correctly generated. This completes the package 1234construction overhaul that began in version 20071019. 1235 1236Example Code and Data Size: These are the sizes for the OS-independent 1237acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1238debug version of the code includes the debug output trace mechanism and has 1239a much larger code and data size. 1240 1241 Previous Release: 1242 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 1243 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 1244 Current Release: 1245 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 1246 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 1247 1248 12492) iASL Compiler/Disassembler and Tools: 1250 1251The AcpiExec utility now installs handlers for all of the predefined 1252Operation Region types. New types supported are: PCI_Config, CMOS, and 1253PCIBARTarget. 1254 1255Fixed a problem with the 64-bit version of AcpiExec where the extended (64- 1256bit) address fields for the DSDT and FACS within the FADT were not being 1257used, causing truncation of the upper 32-bits of these addresses. Lin Ming 1258and Bob Moore 1259 1260---------------------------------------- 126119 October 2007. Summary of changes for version 20071019: 1262 12631) ACPI CA Core Subsystem: 1264 1265Fixed a problem with the Alias operator when the target of the alias is a 1266named ASL operator that opens a new scope -- Scope, Device, PowerResource, 1267Processor, and ThermalZone. In these cases, any children of the original 1268operator could not be accessed via the alias, potentially causing unexpected 1269AE_NOT_FOUND exceptions. (BZ 9067) 1270 1271Fixed a problem with the Package operator where all named references were 1272created as object references and left otherwise unresolved. According to the 1273ACPI specification, a Package can only contain Data Objects or references to 1274control methods. The implication is that named references to Data Objects 1275(Integer, Buffer, String, Package, BufferField, Field) should be resolved 1276immediately upon package creation. This is the approach taken with this 1277change. References to all other named objects (Methods, Devices, Scopes, 1278etc.) are all now properly created as reference objects. (BZ 5328) 1279 1280Reverted a change to Notify handling that was introduced in version 128120070508. This version changed the Notify handling from asynchronous to 1282fully synchronous (Device driver Notify handling with respect to the Notify 1283ASL operator). It was found that this change caused more problems than it 1284solved and was removed by most users. 1285 1286Fixed a problem with the Increment and Decrement operators where the type of 1287the target object could be unexpectedly and incorrectly changed. (BZ 353) 1288Lin Ming. 1289 1290Fixed a problem with the Load and LoadTable operators where the table 1291location within the namespace was ignored. Instead, the table was always 1292loaded into the root or current scope. Lin Ming. 1293 1294Fixed a problem with the Load operator when loading a table from a buffer 1295object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 1296 1297Fixed a problem with the Debug object where a store of a DdbHandle reference 1298object to the Debug object could cause a fault. 1299 1300Added a table checksum verification for the Load operator, in the case where 1301the load is from a buffer. (BZ 578). 1302 1303Implemented additional parameter validation for the LoadTable operator. The 1304length of the input strings SignatureString, OemIdString, and OemTableId are 1305now checked for maximum lengths. (BZ 582) Lin Ming. 1306 1307Example Code and Data Size: These are the sizes for the OS-independent 1308acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1309debug version of the code includes the debug output trace mechanism and has 1310a much larger code and data size. 1311 1312 Previous Release: 1313 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 1314 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 1315 Current Release: 1316 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 1317 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 1318 1319 13202) iASL Compiler/Disassembler: 1321 1322Fixed a problem where if a single file was specified and the file did not 1323exist, no error message was emitted. (Introduced with wildcard support in 1324version 20070917.) 1325 1326---------------------------------------- 132719 September 2007. Summary of changes for version 20070919: 1328 13291) ACPI CA Core Subsystem: 1330 1331Designed and implemented new external interfaces to install and remove 1332handlers for ACPI table-related events. Current events that are defined are 1333LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 1334they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 1335AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 1336 1337Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 1338(acpi_serialized option on Linux) could cause some systems to hang during 1339initialization. (Bob Moore) BZ 8171 1340 1341Fixed a problem where objects of certain types (Device, ThermalZone, 1342Processor, PowerResource) can be not found if they are declared and 1343referenced from within the same control method (Lin Ming) BZ 341 1344 1345Example Code and Data Size: These are the sizes for the OS-independent 1346acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1347debug version of the code includes the debug output trace mechanism and has 1348a much larger code and data size. 1349 1350 Previous Release: 1351 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 1352 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 1353 Current Release: 1354 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 1355 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 1356 1357 13582) iASL Compiler/Disassembler: 1359 1360Implemented support to allow multiple files to be compiled/disassembled in a 1361single invocation. This includes command line wildcard support for both the 1362Windows and Unix versions of the compiler. This feature simplifies the 1363disassembly and compilation of multiple ACPI tables in a single directory. 1364 1365---------------------------------------- 136608 May 2007. Summary of changes for version 20070508: 1367 13681) ACPI CA Core Subsystem: 1369 1370Implemented a Microsoft compatibility design change for the handling of the 1371Notify AML operator. Previously, notify handlers were dispatched and 1372executed completely asynchronously in a deferred thread. The new design 1373still executes the notify handlers in a different thread, but the original 1374thread that executed the Notify() now waits at a synchronization point for 1375the notify handler to complete. Some machines depend on a synchronous Notify 1376operator in order to operate correctly. 1377 1378Implemented support to allow Package objects to be passed as method 1379arguments to the external AcpiEvaluateObject interface. Previously, this 1380would return the AE_NOT_IMPLEMENTED exception. This feature had not been 1381implemented since there were no reserved control methods that required it 1382until recently. 1383 1384Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that 1385contained invalid non-zero values in reserved fields could cause later 1386failures because these fields have meaning in later revisions of the FADT. 1387For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields 1388are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 1389 1390Fixed a problem where the Global Lock handle was not properly updated if a 1391thread that acquired the Global Lock via executing AML code then attempted 1392to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe 1393Liu. 1394 1395Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 1396could be corrupted if the interrupt being removed was at the head of the 1397list. Reported by Linn Crosetto. 1398 1399Example Code and Data Size: These are the sizes for the OS-independent 1400acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1401debug version of the code includes the debug output trace mechanism and has 1402a much larger code and data size. 1403 1404 Previous Release: 1405 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1406 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 1407 Current Release: 1408 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 1409 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 1410 1411---------------------------------------- 141220 March 2007. Summary of changes for version 20070320: 1413 14141) ACPI CA Core Subsystem: 1415 1416Implemented a change to the order of interpretation and evaluation of AML 1417operand objects within the AML interpreter. The interpreter now evaluates 1418operands in the order that they appear in the AML stream (and the 1419corresponding ASL code), instead of in the reverse order (after the entire 1420operand list has been parsed). The previous behavior caused several subtle 1421incompatibilities with the Microsoft AML interpreter as well as being 1422somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 1423 1424Implemented a change to the ACPI Global Lock support. All interfaces to the 1425global lock now allow the same thread to acquire the lock multiple times. 1426This affects the AcpiAcquireGlobalLock external interface to the global lock 1427as well as the internal use of the global lock to support AML fields -- a 1428control method that is holding the global lock can now simultaneously access 1429AML fields that require global lock protection. Previously, in both cases, 1430this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to 1431AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 1432Controller. There is no change to the behavior of the AML Acquire operator, 1433as this can already be used to acquire a mutex multiple times by the same 1434thread. BZ 8066. With assistance from Alexey Starikovskiy. 1435 1436Fixed a problem where invalid objects could be referenced in the AML 1437Interpreter after error conditions. During operand evaluation, ensure that 1438the internal "Return Object" field is cleared on error and only valid 1439pointers are stored there. Caused occasional access to deleted objects that 1440resulted in "large reference count" warning messages. Valery Podrezov. 1441 1442Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on 1443deeply nested control method invocations. BZ 7873, local BZ 487. Valery 1444Podrezov. 1445 1446Fixed an internal problem with the handling of result objects on the 1447interpreter result stack. BZ 7872. Valery Podrezov. 1448 1449Removed obsolete code that handled the case where AML_NAME_OP is the target 1450of a reference (Reference.Opcode). This code was no longer necessary. BZ 14517874. Valery Podrezov. 1452 1453Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a 1454remnant from the previously discontinued 16-bit support. 1455 1456Example Code and Data Size: These are the sizes for the OS-independent 1457acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1458debug version of the code includes the debug output trace mechanism and has 1459a much larger code and data size. 1460 1461 Previous Release: 1462 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1463 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 1464 Current Release: 1465 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1466 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 1467 1468---------------------------------------- 146926 January 2007. Summary of changes for version 20070126: 1470 14711) ACPI CA Core Subsystem: 1472 1473Added the 2007 copyright to all module headers and signons. This affects 1474virtually every file in the ACPICA core subsystem, the iASL compiler, and 1475the utilities. 1476 1477Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 1478during a table load. A bad pointer was passed in the case where the DSDT is 1479overridden, causing a fault in this case. 1480 1481Example Code and Data Size: These are the sizes for the OS-independent 1482acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1483debug version of the code includes the debug output trace mechanism and has 1484a much larger code and data size. 1485 1486 Previous Release: 1487 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1488 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 1489 Current Release: 1490 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1491 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 1492 1493---------------------------------------- 149415 December 2006. Summary of changes for version 20061215: 1495 14961) ACPI CA Core Subsystem: 1497 1498Support for 16-bit ACPICA has been completely removed since it is no longer 1499necessary and it clutters the code. All 16-bit macros, types, and 1500conditional compiles have been removed, cleaning up and simplifying the code 1501across the entire subsystem. DOS support is no longer needed since the 1502bootable Linux firmware kit is now available. 1503 1504The handler for the Global Lock is now removed during AcpiTerminate to 1505enable a clean subsystem restart, via the implementation of the 1506AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 1507HP) 1508 1509Implemented enhancements to the multithreading support within the debugger 1510to enable improved multithreading debugging and evaluation of the subsystem. 1511(Valery Podrezov) 1512 1513Debugger: Enhanced the Statistics/Memory command to emit the total (maximum) 1514memory used during the execution, as well as the maximum memory consumed by 1515each of the various object types. (Valery Podrezov) 1516 1517Example Code and Data Size: These are the sizes for the OS-independent 1518acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1519debug version of the code includes the debug output trace mechanism and has 1520a much larger code and data size. 1521 1522 Previous Release: 1523 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 1524 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 1525 Current Release: 1526 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1527 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 1528 1529 15302) iASL Compiler/Disassembler and Tools: 1531 1532AcpiExec: Implemented a new option (-m) to display full memory use 1533statistics upon subsystem/program termination. (Valery Podrezov) 1534 1535---------------------------------------- 153609 November 2006. Summary of changes for version 20061109: 1537 15381) ACPI CA Core Subsystem: 1539 1540Optimized the Load ASL operator in the case where the source operand is an 1541operation region. Simply map the operation region memory, instead of 1542performing a bytewise read. (Region must be of type SystemMemory, see 1543below.) 1544 1545Fixed the Load ASL operator for the case where the source operand is a 1546region field. A buffer object is also allowed as the source operand. BZ 480 1547 1548Fixed a problem where the Load ASL operator allowed the source operand to be 1549an operation region of any type. It is now restricted to regions of type 1550SystemMemory, as per the ACPI specification. BZ 481 1551 1552Additional cleanup and optimizations for the new Table Manager code. 1553 1554AcpiEnable will now fail if all of the required ACPI tables are not loaded 1555(FADT, FACS, DSDT). BZ 477 1556 1557Added #pragma pack(8/4) to acobject.h to ensure that the structures in this 1558header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 1559manually optimized to be aligned and will not work if it is byte-packed. 1560 1561Example Code and Data Size: These are the sizes for the OS-independent 1562acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1563debug version of the code includes the debug output trace mechanism and has 1564a much larger code and data size. 1565 1566 Previous Release: 1567 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 1568 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 1569 Current Release: 1570 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 1571 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 1572 1573 15742) iASL Compiler/Disassembler and Tools: 1575 1576Fixed a problem where the presence of the _OSI predefined control method 1577within complex expressions could cause an internal compiler error. 1578 1579AcpiExec: Implemented full region support for multiple address spaces. 1580SpaceId is now part of the REGION object. BZ 429 1581 1582---------------------------------------- 158311 October 2006. Summary of changes for version 20061011: 1584 15851) ACPI CA Core Subsystem: 1586 1587Completed an AML interpreter performance enhancement for control method 1588execution. Previously a 2-pass parse/execution, control methods are now 1589completely parsed and executed in a single pass. This improves overall 1590interpreter performance by ~25%, reduces code size, and reduces CPU stack 1591use. (Valery Podrezov + interpreter changes in version 20051202 that 1592eliminated namespace loading during the pass one parse.) 1593 1594Implemented _CID support for PCI Root Bridge detection. If the _HID does not 1595match the predefined PCI Root Bridge IDs, the _CID list (if present) is now 1596obtained and also checked for an ID match. 1597 1598Implemented additional support for the PCI _ADR execution: upsearch until a 1599device scope is found before executing _ADR. This allows PCI_Config 1600operation regions to be declared locally within control methods underneath 1601PCI device objects. 1602 1603Fixed a problem with a possible race condition between threads executing 1604AcpiWalkNamespace and the AML interpreter. This condition was removed by 1605modifying AcpiWalkNamespace to (by default) ignore all temporary namespace 1606entries created during any concurrent control method execution. An 1607additional namespace race condition is known to exist between 1608AcpiWalkNamespace and the Load/Unload ASL operators and is still under 1609investigation. 1610 1611Restructured the AML ParseLoop function, breaking it into several 1612subfunctions in order to reduce CPU stack use and improve maintainability. 1613(Mikhail Kouzmich) 1614 1615AcpiGetHandle: Fix for parameter validation to detect invalid combinations 1616of prefix handle and pathname. BZ 478 1617 1618Example Code and Data Size: These are the sizes for the OS-independent 1619acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1620debug version of the code includes the debug output trace mechanism and has 1621a much larger code and data size. 1622 1623 Previous Release: 1624 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 1625 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 1626 Current Release: 1627 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 1628 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 1629 16302) iASL Compiler/Disassembler and Tools: 1631 1632Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager 1633to restore original behavior. 1634 1635---------------------------------------- 163627 September 2006. Summary of changes for version 20060927: 1637 16381) ACPI CA Core Subsystem: 1639 1640Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 1641These functions now use a spinlock for mutual exclusion and the interrupt 1642level indication flag is not needed. 1643 1644Fixed a problem with the Global Lock where the lock could appear to be 1645obtained before it is actually obtained. The global lock semaphore was 1646inadvertently created with one unit instead of zero units. (BZ 464) Fiodor 1647Suietov. 1648 1649Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during 1650a read from a buffer or region field. (BZ 458) Fiodor Suietov. 1651 1652Example Code and Data Size: These are the sizes for the OS-independent 1653acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1654debug version of the code includes the debug output trace mechanism and has 1655a much larger code and data size. 1656 1657 Previous Release: 1658 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 1659 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 1660 Current Release: 1661 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 1662 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 1663 1664 16652) iASL Compiler/Disassembler and Tools: 1666 1667Fixed a compilation problem with the pre-defined Resource Descriptor field 1668names where an "object does not exist" error could be incorrectly generated 1669if the parent ResourceTemplate pathname places the template within a 1670different namespace scope than the current scope. (BZ 7212) 1671 1672Fixed a problem where the compiler could hang after syntax errors detected 1673in an ElseIf construct. (BZ 453) 1674 1675Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 1676operator. An incorrect output filename was produced when this parameter was 1677a null string (""). Now, the original input filename is used as the AML 1678output filename, with an ".aml" extension. 1679 1680Implemented a generic batch command mode for the AcpiExec utility (execute 1681any AML debugger command) (Valery Podrezov). 1682 1683---------------------------------------- 168412 September 2006. Summary of changes for version 20060912: 1685 16861) ACPI CA Core Subsystem: 1687 1688Enhanced the implementation of the "serialized mode" of the interpreter 1689(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 1690specified, instead of creating a serialization semaphore per control method, 1691the interpreter lock is simply no longer released before a blocking 1692operation during control method execution. This effectively makes the AML 1693Interpreter single-threaded. The overhead of a semaphore per-method is 1694eliminated. 1695 1696Fixed a regression where an error was no longer emitted if a control method 1697attempts to create 2 objects of the same name. This once again returns 1698AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that 1699will dynamically serialize the control method to possible prevent future 1700errors. (BZ 440) 1701 1702Integrated a fix for a problem with PCI Express HID detection in the PCI 1703Config Space setup procedure. (BZ 7145) 1704 1705Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 1706AcpiHwInitialize function - the FADT registers are now validated when the 1707table is loaded. 1708 1709Added two new warnings during FADT verification - 1) if the FADT is larger 1710than the largest known FADT version, and 2) if there is a mismatch between a 171132-bit block address and the 64-bit X counterpart (when both are non-zero.) 1712 1713Example Code and Data Size: These are the sizes for the OS-independent 1714acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1715debug version of the code includes the debug output trace mechanism and has 1716a much larger code and data size. 1717 1718 Previous Release: 1719 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 1720 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 1721 Current Release: 1722 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 1723 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 1724 1725 17262) iASL Compiler/Disassembler and Tools: 1727 1728Fixed a problem with the implementation of the Switch() operator where the 1729temporary variable was declared too close to the actual Switch, instead of 1730at method level. This could cause a problem if the Switch() operator is 1731within a while loop, causing an error on the second iteration. (BZ 460) 1732 1733Disassembler - fix for error emitted for unknown type for target of scope 1734operator. Now, ignore it and continue. 1735 1736Disassembly of an FADT now verifies the input FADT and reports any errors 1737found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 1738 1739Disassembly of raw data buffers with byte initialization data now prefixes 1740each output line with the current buffer offset. 1741 1742Disassembly of ASF! table now includes all variable-length data fields at 1743the end of some of the subtables. 1744 1745The disassembler now emits a comment if a buffer appears to be a 1746ResourceTemplate, but cannot be disassembled as such because the EndTag does 1747not appear at the very end of the buffer. 1748 1749AcpiExec - Added the "-t" command line option to enable the serialized mode 1750of the AML interpreter. 1751 1752---------------------------------------- 175331 August 2006. Summary of changes for version 20060831: 1754 17551) ACPI CA Core Subsystem: 1756 1757Miscellaneous fixes for the Table Manager: 1758- Correctly initialize internal common FADT for all 64-bit "X" fields 1759- Fixed a couple table mapping issues during table load 1760- Fixed a couple alignment issues for IA64 1761- Initialize input array to zero in AcpiInitializeTables 1762- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 1763AcpiGetTableByIndex 1764 1765Change for GPE support: when a "wake" GPE is received, all wake GPEs are now 1766immediately disabled to prevent the waking GPE from firing again and to 1767prevent other wake GPEs from interrupting the wake process. 1768 1769Added the AcpiGpeCount global that tracks the number of processed GPEs, to 1770be used for debugging systems with a large number of ACPI interrupts. 1771 1772Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 1773both the ACPICA headers and the disassembler. 1774 1775Example Code and Data Size: These are the sizes for the OS-independent 1776acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1777debug version of the code includes the debug output trace mechanism and has 1778a much larger code and data size. 1779 1780 Previous Release: 1781 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 1782 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 1783 Current Release: 1784 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 1785 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 1786 1787 17882) iASL Compiler/Disassembler and Tools: 1789 1790Disassembler support for the DMAR ACPI table. 1791 1792---------------------------------------- 179323 August 2006. Summary of changes for version 20060823: 1794 17951) ACPI CA Core Subsystem: 1796 1797The Table Manager component has been completely redesigned and 1798reimplemented. The new design is much simpler, and reduces the overall code 1799and data size of the kernel-resident ACPICA by approximately 5%. Also, it is 1800now possible to obtain the ACPI tables very early during kernel 1801initialization, even before dynamic memory management is initialized. 1802(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 1803 1804Obsolete ACPICA interfaces: 1805 1806- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init 1807time). 1808- AcpiLoadTable: Not needed. 1809- AcpiUnloadTable: Not needed. 1810 1811New ACPICA interfaces: 1812 1813- AcpiInitializeTables: Must be called before the table manager can be used. 1814- AcpiReallocateRootTable: Used to transfer the root table to dynamically 1815allocated memory after it becomes available. 1816- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables 1817in the RSDT/XSDT. 1818 1819Other ACPICA changes: 1820 1821- AcpiGetTableHeader returns the actual mapped table header, not a copy. Use 1822AcpiOsUnmapMemory to free this mapping. 1823- AcpiGetTable returns the actual mapped table. The mapping is managed 1824internally and must not be deleted by the caller. Use of this interface 1825causes no additional dynamic memory allocation. 1826- AcpiFindRootPointer: Support for physical addressing has been eliminated, 1827it appeared to be unused. 1828- The interface to AcpiOsMapMemory has changed to be consistent with the 1829other allocation interfaces. 1830- The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary 1831parameters. 1832- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64- 1833bit platforms. Was previously 64 bits on all platforms. 1834- The interface to the ACPI Global Lock acquire/release macros have changed 1835slightly since ACPICA no longer keeps a local copy of the FACS with a 1836constructed pointer to the actual global lock. 1837 1838Porting to the new table manager: 1839 1840- AcpiInitializeTables: Must be called once, and can be called anytime 1841during the OS initialization process. It allows the host to specify an area 1842of memory to be used to store the internal version of the RSDT/XSDT (root 1843table). This allows the host to access ACPI tables before memory management 1844is initialized and running. 1845- AcpiReallocateRootTable: Can be called after memory management is running 1846to copy the root table to a dynamically allocated array, freeing up the 1847scratch memory specified in the call to AcpiInitializeTables. 1848- AcpiSubsystemInitialize: This existing interface is independent of the 1849Table Manager, and does not have to be called before the Table Manager can 1850be used, it only must be called before the rest of ACPICA can be used. 1851- ACPI Tables: Some changes have been made to the names and structure of the 1852actbl.h and actbl1.h header files and may require changes to existing code. 1853For example, bitfields have been completely removed because of their lack of 1854portability across C compilers. 1855- Update interfaces to the Global Lock acquire/release macros if local 1856versions are used. (see acwin.h) 1857 1858Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 1859 1860New files: tbfind.c 1861 1862Example Code and Data Size: These are the sizes for the OS-independent 1863acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1864debug version of the code includes the debug output trace mechanism and has 1865a much larger code and data size. 1866 1867 Previous Release: 1868 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 1869 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 1870 Current Release: 1871 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 1872 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 1873 1874 18752) iASL Compiler/Disassembler and Tools: 1876 1877No changes for this release. 1878 1879---------------------------------------- 188021 July 2006. Summary of changes for version 20060721: 1881 18821) ACPI CA Core Subsystem: 1883 1884The full source code for the ASL test suite used to validate the iASL 1885compiler and the ACPICA core subsystem is being released with the ACPICA 1886source for the first time. The source is contained in a separate package and 1887consists of over 1100 files that exercise all ASL/AML operators. The package 1888should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor 1889Suietov) 1890 1891Completed a new design and implementation for support of the ACPI Global 1892Lock. On the OS side, the global lock is now treated as a standard AML 1893mutex. Previously, multiple OS threads could "acquire" the global lock 1894simultaneously. However, this could cause the BIOS to be starved out of the 1895lock - especially in cases such as the Embedded Controller driver where 1896there is a tight coupling between the OS and the BIOS. 1897 1898Implemented an optimization for the ACPI Global Lock interrupt mechanism. 1899The Global Lock interrupt handler no longer queues the execution of a 1900separate thread to signal the global lock semaphore. Instead, the semaphore 1901is signaled directly from the interrupt handler. 1902 1903Implemented support within the AML interpreter for package objects that 1904contain a larger AML length (package list length) than the package element 1905count. In this case, the length of the package is truncated to match the 1906package element count. Some BIOS code apparently modifies the package length 1907on the fly, and this change supports this behavior. Provides compatibility 1908with the MS AML interpreter. (With assistance from Fiodor Suietov) 1909 1910Implemented a temporary fix for the BankValue parameter of a Bank Field to 1911support all constant values, now including the Zero and One opcodes. 1912Evaluation of this parameter must eventually be converted to a full TermArg 1913evaluation. A not-implemented error is now returned (temporarily) for non- 1914constant values for this parameter. 1915 1916Fixed problem reports (Fiodor Suietov) integrated: 1917- Fix for premature object deletion after CopyObject on Operation Region (BZ 1918350) 1919 1920Example Code and Data Size: These are the sizes for the OS-independent 1921acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1922debug version of the code includes the debug output trace mechanism and has 1923a much larger code and data size. 1924 1925 Previous Release: 1926 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 1927 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 1928 Current Release: 1929 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 1930 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 1931 1932 19332) iASL Compiler/Disassembler and Tools: 1934 1935No changes for this release. 1936 1937---------------------------------------- 193807 July 2006. Summary of changes for version 20060707: 1939 19401) ACPI CA Core Subsystem: 1941 1942Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 1943that do not allow the initialization of address pointers within packed 1944structures - even though the hardware itself may support misaligned 1945transfers. Some of the debug data structures are packed by default to 1946minimize size. 1947 1948Added an error message for the case where AcpiOsGetThreadId() returns zero. 1949A non-zero value is required by the core ACPICA code to ensure the proper 1950operation of AML mutexes and recursive control methods. 1951 1952The DSDT is now the only ACPI table that determines whether the AML 1953interpreter is in 32-bit or 64-bit mode. Not really a functional change, but 1954the hooks for per-table 32/64 switching have been removed from the code. A 1955clarification to the ACPI specification is forthcoming in ACPI 3.0B. 1956 1957Fixed a possible leak of an OwnerID in the error path of 1958AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 1959deletion to a single place in AcpiTbUninstallTable to correct possible leaks 1960when using the AcpiTbDeleteTablesByType interface (with assistance from 1961Lance Ortiz.) 1962 1963Fixed a problem with Serialized control methods where the semaphore 1964associated with the method could be over-signaled after multiple method 1965invocations. 1966 1967Fixed two issues with the locking of the internal namespace data structure. 1968Both the Unload() operator and AcpiUnloadTable interface now lock the 1969namespace during the namespace deletion associated with the table unload 1970(with assistance from Linn Crosetto.) 1971 1972Fixed problem reports (Valery Podrezov) integrated: 1973- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 1974 1975Fixed problem reports (Fiodor Suietov) integrated: 1976- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 1977- On Address Space handler deletion, needless deactivation call (BZ 374) 1978- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375) 1979- Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone 1980(BZ 376) 1981- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 1982- Minimum Length of RSDT should be validated (BZ 379) 1983- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 1984Handler (BZ (380) 1985- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded 1986(BZ 381) 1987 1988Example Code and Data Size: These are the sizes for the OS-independent 1989acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1990debug version of the code includes the debug output trace mechanism and has 1991a much larger code and data size. 1992 1993 Previous Release: 1994 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 1995 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 1996 Current Release: 1997 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 1998 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 1999 2000 20012) iASL Compiler/Disassembler and Tools: 2002 2003Fixed problem reports: 2004Compiler segfault when ASL contains a long (>1024) String declaration (BZ 2005436) 2006 2007---------------------------------------- 200823 June 2006. Summary of changes for version 20060623: 2009 20101) ACPI CA Core Subsystem: 2011 2012Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 2013allows the type to be customized to the host OS for improved efficiency 2014(since a spinlock is usually a very small object.) 2015 2016Implemented support for "ignored" bits in the ACPI registers. According to 2017the ACPI specification, these bits should be preserved when writing the 2018registers via a read/modify/write cycle. There are 3 bits preserved in this 2019manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 2020 2021Implemented the initial deployment of new OSL mutex interfaces. Since some 2022host operating systems have separate mutex and semaphore objects, this 2023feature was requested. The base code now uses mutexes (and the new mutex 2024interfaces) wherever a binary semaphore was used previously. However, for 2025the current release, the mutex interfaces are defined as macros to map them 2026to the existing semaphore interfaces. Therefore, no OSL changes are required 2027at this time. (See acpiosxf.h) 2028 2029Fixed several problems with the support for the control method SyncLevel 2030parameter. The SyncLevel now works according to the ACPI specification and 2031in concert with the Mutex SyncLevel parameter, since the current SyncLevel 2032is a property of the executing thread. Mutual exclusion for control methods 2033is now implemented with a mutex instead of a semaphore. 2034 2035Fixed three instances of the use of the C shift operator in the bitfield 2036support code (exfldio.c) to avoid the use of a shift value larger than the 2037target data width. The behavior of C compilers is undefined in this case and 2038can cause unpredictable results, and therefore the case must be detected and 2039avoided. (Fiodor Suietov) 2040 2041Added an info message whenever an SSDT or OEM table is loaded dynamically 2042via the Load() or LoadTable() ASL operators. This should improve debugging 2043capability since it will show exactly what tables have been loaded (beyond 2044the tables present in the RSDT/XSDT.) 2045 2046Example Code and Data Size: These are the sizes for the OS-independent 2047acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2048debug version of the code includes the debug output trace mechanism and has 2049a much larger code and data size. 2050 2051 Previous Release: 2052 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 2053 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 2054 Current Release: 2055 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 2056 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 2057 2058 20592) iASL Compiler/Disassembler and Tools: 2060 2061No changes for this release. 2062 2063---------------------------------------- 206408 June 2006. Summary of changes for version 20060608: 2065 20661) ACPI CA Core Subsystem: 2067 2068Converted the locking mutex used for the ACPI hardware to a spinlock. This 2069change should eliminate all problems caused by attempting to acquire a 2070semaphore at interrupt level, and it means that all ACPICA external 2071interfaces that directly access the ACPI hardware can be safely called from 2072interrupt level. OSL code that implements the semaphore interfaces should be 2073able to eliminate any workarounds for being called at interrupt level. 2074 2075Fixed a regression introduced in 20060526 where the ACPI device 2076initialization could be prematurely aborted with an AE_NOT_FOUND if a device 2077did not have an optional _INI method. 2078 2079Fixed an IndexField issue where a write to the Data Register should be 2080limited in size to the AccessSize (width) of the IndexField itself. (BZ 433, 2081Fiodor Suietov) 2082 2083Fixed problem reports (Valery Podrezov) integrated: 2084- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 2085 2086Fixed problem reports (Fiodor Suietov) integrated: 2087- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 2088 2089Removed four global mutexes that were obsolete and were no longer being 2090used. 2091 2092Example Code and Data Size: These are the sizes for the OS-independent 2093acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2094debug version of the code includes the debug output trace mechanism and has 2095a much larger code and data size. 2096 2097 Previous Release: 2098 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 2099 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 2100 Current Release: 2101 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 2102 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 2103 2104 21052) iASL Compiler/Disassembler and Tools: 2106 2107Fixed a fault when using -g option (get tables from registry) on Windows 2108machines. 2109 2110Fixed problem reports integrated: 2111- Generate error if CreateField NumBits parameter is zero. (BZ 405) 2112- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 2113Suietov) 2114- Global table revision override (-r) is ignored (BZ 413) 2115 2116---------------------------------------- 211726 May 2006. Summary of changes for version 20060526: 2118 21191) ACPI CA Core Subsystem: 2120 2121Restructured, flattened, and simplified the internal interfaces for 2122namespace object evaluation - resulting in smaller code, less CPU stack use, 2123and fewer interfaces. (With assistance from Mikhail Kouzmich) 2124 2125Fixed a problem with the CopyObject operator where the first parameter was 2126not typed correctly for the parser, interpreter, compiler, and disassembler. 2127Caused various errors and unexpected behavior. 2128 2129Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 2130produced incorrect results with some C compilers. Since the behavior of C 2131compilers when the shift value is larger than the datatype width is 2132apparently not well defined, the interpreter now detects this condition and 2133simply returns zero as expected in all such cases. (BZ 395) 2134 2135Fixed problem reports (Valery Podrezov) integrated: 2136- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 2137- Allow interpreter to handle nested method declarations (BZ 5361) 2138 2139Fixed problem reports (Fiodor Suietov) integrated: 2140- AcpiTerminate doesn't free debug memory allocation list objects (BZ 355) 2141- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356) 2142- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 2143- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 2144- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 2145- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 2146- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 2147- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 2148- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365) 2149- Status of the Global Initialization Handler call not used (BZ 366) 2150- Incorrect object parameter to Global Initialization Handler (BZ 367) 2151 2152Example Code and Data Size: These are the sizes for the OS-independent 2153acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2154debug version of the code includes the debug output trace mechanism and has 2155a much larger code and data size. 2156 2157 Previous Release: 2158 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 2159 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 2160 Current Release: 2161 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 2162 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 2163 2164 21652) iASL Compiler/Disassembler and Tools: 2166 2167Modified the parser to allow the names IO, DMA, and IRQ to be used as 2168namespace identifiers with no collision with existing resource descriptor 2169macro names. This provides compatibility with other ASL compilers and is 2170most useful for disassembly/recompilation of existing tables without parse 2171errors. (With assistance from Thomas Renninger) 2172 2173Disassembler: fixed an incorrect disassembly problem with the 2174DataTableRegion and CopyObject operators. Fixed a possible fault during 2175disassembly of some Alias operators. 2176 2177---------------------------------------- 217812 May 2006. Summary of changes for version 20060512: 2179 21801) ACPI CA Core Subsystem: 2181 2182Replaced the AcpiOsQueueForExecution interface with a new interface named 2183AcpiOsExecute. The major difference is that the new interface does not have 2184a Priority parameter, this appeared to be useless and has been replaced by a 2185Type parameter. The Type tells the host what type of execution is being 2186requested, such as global lock handler, notify handler, GPE handler, etc. 2187This allows the host to queue and execute the request as appropriate for the 2188request type, possibly using different work queues and different priorities 2189for the various request types. This enables fixes for multithreading 2190deadlock problems such as BZ #5534, and will require changes to all existing 2191OS interface layers. (Alexey Starikovskiy and Bob Moore) 2192 2193Fixed a possible memory leak associated with the support for the so-called 2194"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 2195Suietov) 2196 2197Fixed a problem with the Load() operator where a table load from an 2198operation region could overwrite an internal table buffer by up to 7 bytes 2199and cause alignment faults on IPF systems. (With assistance from Luming Yu) 2200 2201Example Code and Data Size: These are the sizes for the OS-independent 2202acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2203debug version of the code includes the debug output trace mechanism and has 2204a much larger code and data size. 2205 2206 Previous Release: 2207 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 2208 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 2209 Current Release: 2210 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 2211 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 2212 2213 2214 22152) iASL Compiler/Disassembler and Tools: 2216 2217Disassembler: Implemented support to cross reference the internal namespace 2218and automatically generate ASL External() statements for symbols not defined 2219within the current table being disassembled. This will simplify the 2220disassembly and recompilation of interdependent tables such as SSDTs since 2221these statements will no longer have to be added manually. 2222 2223Disassembler: Implemented experimental support to automatically detect 2224invocations of external control methods and generate appropriate External() 2225statements. This is problematic because the AML cannot be correctly parsed 2226until the number of arguments for each control method is known. Currently, 2227standalone method invocations and invocations as the source operand of a 2228Store() statement are supported. 2229 2230Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 2231LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 2232LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 2233more readable and likely closer to the original ASL source. 2234 2235---------------------------------------- 223621 April 2006. Summary of changes for version 20060421: 2237 22381) ACPI CA Core Subsystem: 2239 2240Removed a device initialization optimization introduced in 20051216 where 2241the _STA method was not run unless an _INI was also present for the same 2242device. This optimization could cause problems because it could allow _INI 2243methods to be run within a not-present device subtree. (If a not-present 2244device had no _INI, _STA would not be run, the not-present status would not 2245be discovered, and the children of the device would be incorrectly 2246traversed.) 2247 2248Implemented a new _STA optimization where namespace subtrees that do not 2249contain _INI are identified and ignored during device initialization. 2250Selectively running _STA can significantly improve boot time on large 2251machines (with assistance from Len Brown.) 2252 2253Implemented support for the device initialization case where the returned 2254_STA flags indicate a device not-present but functioning. In this case, _INI 2255is not run, but the device children are examined for presence, as per the 2256ACPI specification. 2257 2258Implemented an additional change to the IndexField support in order to 2259conform to MS behavior. The value written to the Index Register is not 2260simply a byte offset, it is a byte offset in units of the access width of 2261the parent Index Field. (Fiodor Suietov) 2262 2263Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 2264interface is called during the creation of all AML operation regions, and 2265allows the host OS to exert control over what addresses it will allow the 2266AML code to access. Operation Regions whose addresses are disallowed will 2267cause a runtime exception when they are actually accessed (will not affect 2268or abort table loading.) See oswinxf or osunixxf for an example 2269implementation. 2270 2271Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 2272interface allows the host OS to match the various "optional" 2273interface/behavior strings for the _OSI predefined control method as 2274appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 2275for an example implementation. 2276 2277Restructured and corrected various problems in the exception handling code 2278paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 2279(with assistance from Takayoshi Kochi.) 2280 2281Modified the Linux source converter to ignore quoted string literals while 2282converting identifiers from mixed to lower case. This will correct problems 2283with the disassembler and other areas where such strings must not be 2284modified. 2285 2286The ACPI_FUNCTION_* macros no longer require quotes around the function 2287name. This allows the Linux source converter to convert the names, now that 2288the converter ignores quoted strings. 2289 2290Example Code and Data Size: These are the sizes for the OS-independent 2291acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2292debug version of the code includes the debug output trace mechanism and has 2293a much larger code and data size. 2294 2295 Previous Release: 2296 2297 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 2298 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 2299 Current Release: 2300 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 2301 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 2302 2303 23042) iASL Compiler/Disassembler and Tools: 2305 2306Implemented 3 new warnings for iASL, and implemented multiple warning levels 2307(w2 flag). 2308 23091) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not 2310WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 2311check for the possible timeout, a warning is issued. 2312 23132) Useless operators: If an ASL operator does not specify an optional target 2314operand and it also does not use the function return value from the 2315operator, a warning is issued since the operator effectively does nothing. 2316 23173) Unreferenced objects: If a namespace object is created, but never 2318referenced, a warning is issued. This is a warning level 2 since there are 2319cases where this is ok, such as when a secondary table is loaded that uses 2320the unreferenced objects. Even so, care is taken to only flag objects that 2321don't look like they will ever be used. For example, the reserved methods 2322(starting with an underscore) are usually not referenced because it is 2323expected that the OS will invoke them. 2324 2325---------------------------------------- 232631 March 2006. Summary of changes for version 20060331: 2327 23281) ACPI CA Core Subsystem: 2329 2330Implemented header file support for the following additional ACPI tables: 2331ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support, 2332all current and known ACPI tables are now defined in the ACPICA headers and 2333are available for use by device drivers and other software. 2334 2335Implemented support to allow tables that contain ACPI names with invalid 2336characters to be loaded. Previously, this would cause the table load to 2337fail, but since there are several known cases of such tables on existing 2338machines, this change was made to enable ACPI support for them. Also, this 2339matches the behavior of the Microsoft ACPI implementation. 2340 2341Fixed a couple regressions introduced during the memory optimization in the 234220060317 release. The namespace node definition required additional 2343reorganization and an internal datatype that had been changed to 8-bit was 2344restored to 32-bit. (Valery Podrezov) 2345 2346Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 2347could be passed through to AcpiOsReleaseObject which is unexpected. Such 2348null pointers are now trapped and ignored, matching the behavior of the 2349previous implementation before the deployment of AcpiOsReleaseObject. 2350(Valery Podrezov, Fiodor Suietov) 2351 2352Fixed a memory mapping leak during the deletion of a SystemMemory operation 2353region where a cached memory mapping was not deleted. This became a 2354noticeable problem for operation regions that are defined within frequently 2355used control methods. (Dana Meyers) 2356 2357Reorganized the ACPI table header files into two main files: one for the 2358ACPI tables consumed by the ACPICA core, and another for the miscellaneous 2359ACPI tables that are consumed by the drivers and other software. The various 2360FADT definitions were merged into one common section and three different 2361tables (ACPI 1.0, 1.0+, and 2.0) 2362 2363Example Code and Data Size: These are the sizes for the OS-independent 2364acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2365debug version of the code includes the debug output trace mechanism and has 2366a much larger code and data size. 2367 2368 Previous Release: 2369 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 2370 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 2371 Current Release: 2372 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 2373 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 2374 2375 23762) iASL Compiler/Disassembler and Tools: 2377 2378Disassembler: Implemented support to decode and format all non-AML ACPI 2379tables (tables other than DSDTs and SSDTs.) This includes the new tables 2380added to the ACPICA headers, therefore all current and known ACPI tables are 2381supported. 2382 2383Disassembler: The change to allow ACPI names with invalid characters also 2384enables the disassembly of such tables. Invalid characters within names are 2385changed to '*' to make the name printable; the iASL compiler will still 2386generate an error for such names, however, since this is an invalid ACPI 2387character. 2388 2389Implemented an option for AcpiXtract (-a) to extract all tables found in the 2390input file. The default invocation extracts only the DSDTs and SSDTs. 2391 2392Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 2393makefile for the AcpiXtract utility. 2394 2395---------------------------------------- 239617 March 2006. Summary of changes for version 20060317: 2397 23981) ACPI CA Core Subsystem: 2399 2400Implemented the use of a cache object for all internal namespace nodes. 2401Since there are about 1000 static nodes in a typical system, this will 2402decrease memory use for cache implementations that minimize per-allocation 2403overhead (such as a slab allocator.) 2404 2405Removed the reference count mechanism for internal namespace nodes, since it 2406was deemed unnecessary. This reduces the size of each namespace node by 2407about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case, 2408and 32 bytes for the 64-bit case. 2409 2410Optimized several internal data structures to reduce object size on 64-bit 2411platforms by packing data within the 64-bit alignment. This includes the 2412frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 2413instances corresponding to the namespace objects. 2414 2415Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1" 2416and "Windows 2006". 2417 2418Split the allocation tracking mechanism out to a separate file, from 2419utalloc.c to uttrack.c. This mechanism appears to be only useful for 2420application-level code. Kernels may wish to not include uttrack.c in 2421distributions. 2422 2423Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated 2424code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 2425macros.) 2426 2427Code and Data Size: These are the sizes for the acpica.lib produced by the 2428Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 2429driver or OSPM code. The debug version of the code includes the debug output 2430trace mechanism and has a much larger code and data size. Note that these 2431values will vary depending on the efficiency of the compiler and the 2432compiler options used during generation. 2433 2434 Previous Release: 2435 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 2436 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 2437 Current Release: 2438 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 2439 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 2440 2441 24422) iASL Compiler/Disassembler and Tools: 2443 2444Implemented an ANSI C version of the acpixtract utility. This version will 2445automatically extract the DSDT and all SSDTs from the input acpidump text 2446file and dump the binary output to separate files. It can also display a 2447summary of the input file including the headers for each table found and 2448will extract any single ACPI table, with any signature. (See 2449source/tools/acpixtract) 2450 2451---------------------------------------- 245210 March 2006. Summary of changes for version 20060310: 2453 24541) ACPI CA Core Subsystem: 2455 2456Tagged all external interfaces to the subsystem with the new 2457ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist 2458kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 2459macro. The default definition is NULL. 2460 2461Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId. 2462This allows the host to define this as necessary to simplify kernel 2463integration. The default definition is ACPI_NATIVE_UINT. 2464 2465Fixed two interpreter problems related to error processing, the deletion of 2466objects, and placing invalid pointers onto the internal operator result 2467stack. BZ 6028, 6151 (Valery Podrezov) 2468 2469Increased the reference count threshold where a warning is emitted for large 2470reference counts in order to eliminate unnecessary warnings on systems with 2471large namespaces (especially 64-bit.) Increased the value from 0x400 to 24720x800. 2473 2474Due to universal disagreement as to the meaning of the 'c' in the calloc() 2475function, the ACPI_MEM_CALLOCATE macro has been renamed to 2476ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 2477ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 2478ACPI_FREE. 2479 2480Code and Data Size: These are the sizes for the acpica.lib produced by the 2481Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 2482driver or OSPM code. The debug version of the code includes the debug output 2483trace mechanism and has a much larger code and data size. Note that these 2484values will vary depending on the efficiency of the compiler and the 2485compiler options used during generation. 2486 2487 Previous Release: 2488 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 2489 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 2490 Current Release: 2491 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 2492 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 2493 2494 24952) iASL Compiler/Disassembler: 2496 2497Disassembler: implemented support for symbolic resource descriptor 2498references. If a CreateXxxxField operator references a fixed offset within a 2499resource descriptor, a name is assigned to the descriptor and the offset is 2500translated to the appropriate resource tag and pathname. The addition of 2501this support brings the disassembled code very close to the original ASL 2502source code and helps eliminate run-time errors when the disassembled code 2503is modified (and recompiled) in such a way as to invalidate the original 2504fixed offsets. 2505 2506Implemented support for a Descriptor Name as the last parameter to the ASL 2507Register() macro. This parameter was inadvertently left out of the ACPI 2508specification, and will be added for ACPI 3.0b. 2509 2510Fixed a problem where the use of the "_OSI" string (versus the full path 2511"\_OSI") caused an internal compiler error. ("No back ptr to op") 2512 2513Fixed a problem with the error message that occurs when an invalid string is 2514used for a _HID object (such as one with an embedded asterisk: "*PNP010A".) 2515The correct message is now displayed. 2516 2517---------------------------------------- 251817 February 2006. Summary of changes for version 20060217: 2519 25201) ACPI CA Core Subsystem: 2521 2522Implemented a change to the IndexField support to match the behavior of the 2523Microsoft AML interpreter. The value written to the Index register is now a 2524byte offset, no longer an index based upon the width of the Data register. 2525This should fix IndexField problems seen on some machines where the Data 2526register is not exactly one byte wide. The ACPI specification will be 2527clarified on this point. 2528 2529Fixed a problem where several resource descriptor types could overrun the 2530internal descriptor buffer due to size miscalculation: VendorShort, 2531VendorLong, and Interrupt. This was noticed on IA64 machines, but could 2532affect all platforms. 2533 2534Fixed a problem where individual resource descriptors were misaligned within 2535the internal buffer, causing alignment faults on IA64 platforms. 2536 2537Code and Data Size: These are the sizes for the acpica.lib produced by the 2538Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 2539driver or OSPM code. The debug version of the code includes the debug output 2540trace mechanism and has a much larger code and data size. Note that these 2541values will vary depending on the efficiency of the compiler and the 2542compiler options used during generation. 2543 2544 Previous Release: 2545 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 2546 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 2547 Current Release: 2548 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 2549 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 2550 2551 25522) iASL Compiler/Disassembler: 2553 2554Implemented support for new reserved names: _WDG and _WED are Microsoft 2555extensions for Windows Instrumentation Management, _TDL is a new ACPI- 2556defined method (Throttling Depth Limit.) 2557 2558Fixed a problem where a zero-length VendorShort or VendorLong resource 2559descriptor was incorrectly emitted as a descriptor of length one. 2560 2561---------------------------------------- 256210 February 2006. Summary of changes for version 20060210: 2563 25641) ACPI CA Core Subsystem: 2565 2566Removed a couple of extraneous ACPI_ERROR messages that appeared during 2567normal execution. These became apparent after the conversion from 2568ACPI_DEBUG_PRINT. 2569 2570Fixed a problem where the CreateField operator could hang if the BitIndex or 2571NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 2572 2573Fixed a problem where a DeRefOf operation on a buffer object incorrectly 2574failed with an exception. This also fixes a couple of related RefOf and 2575DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 2576 2577Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of 2578AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ 25795480) 2580 2581Implemented a memory cleanup at the end of the execution of each iteration 2582of an AML While() loop, preventing the accumulation of outstanding objects. 2583(Valery Podrezov, BZ 5427) 2584 2585Eliminated a chunk of duplicate code in the object resolution code. (Valery 2586Podrezov, BZ 5336) 2587 2588Fixed several warnings during the 64-bit code generation. 2589 2590The AcpiSrc source code conversion tool now inserts one line of whitespace 2591after an if() statement that is followed immediately by a comment, improving 2592readability of the Linux code. 2593 2594Code and Data Size: The current and previous library sizes for the core 2595subsystem are shown below. These are the code and data sizes for the 2596acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 2597values do not include any ACPI driver or OSPM code. The debug version of the 2598code includes the debug output trace mechanism and has a much larger code 2599and data size. Note that these values will vary depending on the efficiency 2600of the compiler and the compiler options used during generation. 2601 2602 Previous Release: 2603 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 2604 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 2605 Current Release: 2606 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 2607 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 2608 2609 26102) iASL Compiler/Disassembler: 2611 2612Fixed a problem with the disassembly of a BankField operator with a complex 2613expression for the BankValue parameter. 2614 2615---------------------------------------- 261627 January 2006. Summary of changes for version 20060127: 2617 26181) ACPI CA Core Subsystem: 2619 2620Implemented support in the Resource Manager to allow unresolved namestring 2621references within resource package objects for the _PRT method. This support 2622is in addition to the previously implemented unresolved reference support 2623within the AML parser. If the interpreter slack mode is enabled, these 2624unresolved references will be passed through to the caller as a NULL package 2625entry. 2626 2627Implemented and deployed new macros and functions for error and warning 2628messages across the subsystem. These macros are simpler and generate less 2629code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 2630ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 2631macros remain defined to allow ACPI drivers time to migrate to the new 2632macros. 2633 2634Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the 2635Acquire/Release Lock OSL interfaces. 2636 2637Fixed a problem where Alias ASL operators are sometimes not correctly 2638resolved, in both the interpreter and the iASL compiler. 2639 2640Fixed several problems with the implementation of the ConcatenateResTemplate 2641ASL operator. As per the ACPI specification, zero length buffers are now 2642treated as a single EndTag. One-length buffers always cause a fatal 2643exception. Non-zero length buffers that do not end with a full 2-byte EndTag 2644cause a fatal exception. 2645 2646Fixed a possible structure overwrite in the AcpiGetObjectInfo external 2647interface. (With assistance from Thomas Renninger) 2648 2649Code and Data Size: The current and previous library sizes for the core 2650subsystem are shown below. These are the code and data sizes for the 2651acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 2652values do not include any ACPI driver or OSPM code. The debug version of the 2653code includes the debug output trace mechanism and has a much larger code 2654and data size. Note that these values will vary depending on the efficiency 2655of the compiler and the compiler options used during generation. 2656 2657 Previous Release: 2658 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 2659 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 2660 Current Release: 2661 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 2662 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 2663 2664 26652) iASL Compiler/Disassembler: 2666 2667Fixed an internal error that was generated for any forward references to ASL 2668Alias objects. 2669 2670---------------------------------------- 267113 January 2006. Summary of changes for version 20060113: 2672 26731) ACPI CA Core Subsystem: 2674 2675Added 2006 copyright to all module headers and signons. This affects 2676virtually every file in the ACPICA core subsystem, iASL compiler, and the 2677utilities. 2678 2679Enhanced the ACPICA error reporting in order to simplify user migration to 2680the non-debug version of ACPICA. Replaced all instances of the 2681ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug 2682levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 2683respectively. This preserves all error and warning messages in the non-debug 2684version of the ACPICA code (this has been referred to as the "debug lite" 2685option.) Over 200 cases were converted to create a total of over 380 2686error/warning messages across the ACPICA code. This increases the code and 2687data size of the default non-debug version of the code somewhat (about 13K), 2688but all error/warning reporting may be disabled if desired (and code 2689eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 2690configuration option. The size of the debug version of ACPICA remains about 2691the same. 2692 2693Fixed a memory leak within the AML Debugger "Set" command. One object was 2694not properly deleted for every successful invocation of the command. 2695 2696Code and Data Size: The current and previous library sizes for the core 2697subsystem are shown below. These are the code and data sizes for the 2698acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 2699values do not include any ACPI driver or OSPM code. The debug version of the 2700code includes the debug output trace mechanism and has a much larger code 2701and data size. Note that these values will vary depending on the efficiency 2702of the compiler and the compiler options used during generation. 2703 2704 Previous Release: 2705 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 2706 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 2707 Current Release: 2708 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 2709 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 2710 2711 27122) iASL Compiler/Disassembler: 2713 2714The compiler now officially supports the ACPI 3.0a specification that was 2715released on December 30, 2005. (Specification is available at www.acpi.info) 2716 2717---------------------------------------- 271816 December 2005. Summary of changes for version 20051216: 2719 27201) ACPI CA Core Subsystem: 2721 2722Implemented optional support to allow unresolved names within ASL Package 2723objects. A null object is inserted in the package when a named reference 2724cannot be located in the current namespace. Enabled via the interpreter 2725slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines 2726that contain such code. 2727 2728Implemented an optimization to the initialization sequence that can improve 2729boot time. During ACPI device initialization, the _STA method is now run if 2730and only if the _INI method exists. The _STA method is used to determine if 2731the device is present; An _INI can only be run if _STA returns present, but 2732it is a waste of time to run the _STA method if the _INI does not exist. 2733(Prototype and assistance from Dong Wei) 2734 2735Implemented use of the C99 uintptr_t for the pointer casting macros if it is 2736available in the current compiler. Otherwise, the default (void *) cast is 2737used as before. 2738 2739Fixed some possible memory leaks found within the execution path of the 2740Break, Continue, If, and CreateField operators. (Valery Podrezov) 2741 2742Fixed a problem introduced in the 20051202 release where an exception is 2743generated during method execution if a control method attempts to declare 2744another method. 2745 2746Moved resource descriptor string constants that are used by both the AML 2747disassembler and AML debugger to the common utilities directory so that 2748these components are independent. 2749 2750Implemented support in the AcpiExec utility (-e switch) to globally ignore 2751exceptions during control method execution (method is not aborted.) 2752 2753Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 2754generation. 2755 2756Code and Data Size: The current and previous library sizes for the core 2757subsystem are shown below. These are the code and data sizes for the 2758acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 2759values do not include any ACPI driver or OSPM code. The debug version of the 2760code includes the debug output trace mechanism and has a much larger code 2761and data size. Note that these values will vary depending on the efficiency 2762of the compiler and the compiler options used during generation. 2763 2764 Previous Release: 2765 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 2766 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 2767 Current Release: 2768 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 2769 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 2770 2771 27722) iASL Compiler/Disassembler: 2773 2774Fixed a problem where a CPU stack overflow fault could occur if a recursive 2775method call was made from within a Return statement. 2776 2777---------------------------------------- 277802 December 2005. Summary of changes for version 20051202: 2779 27801) ACPI CA Core Subsystem: 2781 2782Modified the parsing of control methods to no longer create namespace 2783objects during the first pass of the parse. Objects are now created only 2784during the execute phase, at the moment the namespace creation operator is 2785encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This 2786should eliminate ALREADY_EXISTS exceptions seen on some machines where 2787reentrant control methods are protected by an AML mutex. The mutex will now 2788correctly block multiple threads from attempting to create the same object 2789more than once. 2790 2791Increased the number of available Owner Ids for namespace object tracking 2792from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on 2793some machines with a large number of ACPI tables (either static or dynamic). 2794 2795Fixed a problem with the AcpiExec utility where a fault could occur when the 2796-b switch (batch mode) is used. 2797 2798Enhanced the namespace dump routine to output the owner ID for each 2799namespace object. 2800 2801Code and Data Size: The current and previous library sizes for the core 2802subsystem are shown below. These are the code and data sizes for the 2803acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 2804values do not include any ACPI driver or OSPM code. The debug version of the 2805code includes the debug output trace mechanism and has a much larger code 2806and data size. Note that these values will vary depending on the efficiency 2807of the compiler and the compiler options used during generation. 2808 2809 Previous Release: 2810 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 2811 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 2812 Current Release: 2813 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 2814 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 2815 2816 28172) iASL Compiler/Disassembler: 2818 2819Fixed a parse error during compilation of certain Switch/Case constructs. To 2820simplify the parse, the grammar now allows for multiple Default statements 2821and this error is now detected and flagged during the analysis phase. 2822 2823Disassembler: The disassembly now includes the contents of the original 2824table header within a comment at the start of the file. This includes the 2825name and version of the original ASL compiler. 2826 2827---------------------------------------- 282817 November 2005. Summary of changes for version 20051117: 2829 28301) ACPI CA Core Subsystem: 2831 2832Fixed a problem in the AML parser where the method thread count could be 2833decremented below zero if any errors occurred during the method parse phase. 2834This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines. 2835This also fixed a related regression with the mechanism that detects and 2836corrects methods that cannot properly handle reentrancy (related to the 2837deployment of the new OwnerId mechanism.) 2838 2839Eliminated the pre-parsing of control methods (to detect errors) during 2840table load. Related to the problem above, this was causing unwind issues if 2841any errors occurred during the parse, and it seemed to be overkill. A table 2842load should not be aborted if there are problems with any single control 2843method, thus rendering this feature rather pointless. 2844 2845Fixed a problem with the new table-driven resource manager where an internal 2846buffer overflow could occur for small resource templates. 2847 2848Implemented a new external interface, AcpiGetVendorResource. This interface 2849will find and return a vendor-defined resource descriptor within a _CRS or 2850_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas. 2851 2852Removed the length limit (200) on string objects as per the upcoming ACPI 28533.0A specification. This affects the following areas of the interpreter: 1) 2854any implicit conversion of a Buffer to a String, 2) a String object result 2855of the ASL Concatentate operator, 3) the String object result of the ASL 2856ToString operator. 2857 2858Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER 2859on a semaphore object would incorrectly timeout. This allows the 2860multithreading features of the AcpiExec utility to work properly under 2861Windows. 2862 2863Updated the Linux makefiles for the iASL compiler and AcpiExec to include 2864the recently added file named "utresrc.c". 2865 2866Code and Data Size: The current and previous library sizes for the core 2867subsystem are shown below. These are the code and data sizes for the 2868acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 2869values do not include any ACPI driver or OSPM code. The debug version of the 2870code includes the debug output trace mechanism and has a much larger code 2871and data size. Note that these values will vary depending on the efficiency 2872of the compiler and the compiler options used during generation. 2873 2874 Previous Release: 2875 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 2876 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 2877 Current Release: 2878 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 2879 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 2880 2881 28822) iASL Compiler/Disassembler: 2883 2884Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 2885specification. For the iASL compiler, this means that string literals within 2886the source ASL can be of any length. 2887 2888Enhanced the listing output to dump the AML code for resource descriptors 2889immediately after the ASL code for each descriptor, instead of in a block at 2890the end of the entire resource template. 2891 2892Enhanced the compiler debug output to dump the entire original parse tree 2893constructed during the parse phase, before any transforms are applied to the 2894tree. The transformed tree is dumped also. 2895 2896---------------------------------------- 289702 November 2005. Summary of changes for version 20051102: 2898 28991) ACPI CA Core Subsystem: 2900 2901Modified the subsystem initialization sequence to improve GPE support. The 2902GPE initialization has been split into two parts in order to defer execution 2903of the _PRW methods (Power Resources for Wake) until after the hardware is 2904fully initialized and the SCI handler is installed. This allows the _PRW 2905methods to access fields protected by the Global Lock. This will fix systems 2906where a NO_GLOBAL_LOCK exception has been seen during initialization. 2907 2908Converted the ACPI internal object disassemble and display code within the 2909AML debugger to fully table-driven operation, reducing code size and 2910increasing maintainability. 2911 2912Fixed a regression with the ConcatenateResTemplate() ASL operator introduced 2913in the 20051021 release. 2914 2915Implemented support for "local" internal ACPI object types within the 2916debugger "Object" command and the AcpiWalkNamespace external interfaces. 2917These local types include RegionFields, BankFields, IndexFields, Alias, and 2918reference objects. 2919 2920Moved common AML resource handling code into a new file, "utresrc.c". This 2921code is shared by both the Resource Manager and the AML Debugger. 2922 2923Code and Data Size: The current and previous library sizes for the core 2924subsystem are shown below. These are the code and data sizes for the 2925acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 2926values do not include any ACPI driver or OSPM code. The debug version of the 2927code includes the debug output trace mechanism and has a much larger code 2928and data size. Note that these values will vary depending on the efficiency 2929of the compiler and the compiler options used during generation. 2930 2931 Previous Release: 2932 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 2933 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 2934 Current Release: 2935 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 2936 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 2937 2938 29392) iASL Compiler/Disassembler: 2940 2941Fixed a problem with very large initializer lists (more than 4000 elements) 2942for both Buffer and Package objects where the parse stack could overflow. 2943 2944Enhanced the pre-compile source code scan for non-ASCII characters to ignore 2945characters within comment fields. The scan is now always performed and is no 2946longer optional, detecting invalid characters within a source file 2947immediately rather than during the parse phase or later. 2948 2949Enhanced the ASL grammar definition to force early reductions on all list- 2950style grammar elements so that the overall parse stack usage is greatly 2951reduced. This should improve performance and reduce the possibility of parse 2952stack overflow. 2953 2954Eliminated all reduce/reduce conflicts in the iASL parser generation. Also, 2955with the addition of a %expected statement, the compiler generates from 2956source with no warnings. 2957 2958Fixed a possible segment fault in the disassembler if the input filename 2959does not contain a "dot" extension (Thomas Renninger). 2960 2961---------------------------------------- 296221 October 2005. Summary of changes for version 20051021: 2963 29641) ACPI CA Core Subsystem: 2965 2966Implemented support for the EM64T and other x86-64 processors. This 2967essentially entails recognizing that these processors support non-aligned 2968memory transfers. Previously, all 64-bit processors were assumed to lack 2969hardware support for non-aligned transfers. 2970 2971Completed conversion of the Resource Manager to nearly full table-driven 2972operation. Specifically, the resource conversion code (convert AML to 2973internal format and the reverse) and the debug code to dump internal 2974resource descriptors are fully table-driven, reducing code and data size and 2975improving maintainability. 2976 2977The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word 2978on 64-bit processors instead of a fixed 32-bit word. (With assistance from 2979Alexey Starikovskiy) 2980 2981Implemented support within the resource conversion code for the Type- 2982Specific byte within the various ACPI 3.0 *WordSpace macros. 2983 2984Fixed some issues within the resource conversion code for the type-specific 2985flags for both Memory and I/O address resource descriptors. For Memory, 2986implemented support for the MTP and TTP flags. For I/O, split the TRS and 2987TTP flags into two separate fields. 2988 2989Code and Data Size: The current and previous library sizes for the core 2990subsystem are shown below. These are the code and data sizes for the 2991acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 2992values do not include any ACPI driver or OSPM code. The debug version of the 2993code includes the debug output trace mechanism and has a much larger code 2994and data size. Note that these values will vary depending on the efficiency 2995of the compiler and the compiler options used during generation. 2996 2997 Previous Release: 2998 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 2999 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 3000 Current Release: 3001 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 3002 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 3003 3004 3005 30062) iASL Compiler/Disassembler: 3007 3008Relaxed a compiler restriction that disallowed a ResourceIndex byte if the 3009corresponding ResourceSource string was not also present in a resource 3010descriptor declaration. This restriction caused problems with existing 3011AML/ASL code that includes the Index byte without the string. When such AML 3012was disassembled, it could not be compiled without modification. Further, 3013the modified code created a resource template with a different size than the 3014original, breaking code that used fixed offsets into the resource template 3015buffer. 3016 3017Removed a recent feature of the disassembler to ignore a lone ResourceIndex 3018byte. This byte is now emitted if present so that the exact AML can be 3019reproduced when the disassembled code is recompiled. 3020 3021Improved comments and text alignment for the resource descriptor code 3022emitted by the disassembler. 3023 3024Implemented disassembler support for the ACPI 3.0 AccessSize field within a 3025Register() resource descriptor. 3026 3027---------------------------------------- 302830 September 2005. Summary of changes for version 20050930: 3029 30301) ACPI CA Core Subsystem: 3031 3032Completed a major overhaul of the Resource Manager code - specifically, 3033optimizations in the area of the AML/internal resource conversion code. The 3034code has been optimized to simplify and eliminate duplicated code, CPU stack 3035use has been decreased by optimizing function parameters and local 3036variables, and naming conventions across the manager have been standardized 3037for clarity and ease of maintenance (this includes function, parameter, 3038variable, and struct/typedef names.) The update may force changes in some 3039driver code, depending on how resources are handled by the host OS. 3040 3041All Resource Manager dispatch and information tables have been moved to a 3042single location for clarity and ease of maintenance. One new file was 3043created, named "rsinfo.c". 3044 3045The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 3046guarantee that the argument is not evaluated twice, making them less prone 3047to macro side-effects. However, since there exists the possibility of 3048additional stack use if a particular compiler cannot optimize them (such as 3049in the debug generation case), the original macros are optionally available. 3050Note that some invocations of the return_VALUE macro may now cause size 3051mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to 3052eliminate these. (From Randy Dunlap) 3053 3054Implemented a new mechanism to enable debug tracing for individual control 3055methods. A new external interface, AcpiDebugTrace, is provided to enable 3056this mechanism. The intent is to allow the host OS to easily enable and 3057disable tracing for problematic control methods. This interface can be 3058easily exposed to a user or debugger interface if desired. See the file 3059psxface.c for details. 3060 3061AcpiUtCallocate will now return a valid pointer if a length of zero is 3062specified - a length of one is used and a warning is issued. This matches 3063the behavior of AcpiUtAllocate. 3064 3065Code and Data Size: The current and previous library sizes for the core 3066subsystem are shown below. These are the code and data sizes for the 3067acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3068values do not include any ACPI driver or OSPM code. The debug version of the 3069code includes the debug output trace mechanism and has a much larger code 3070and data size. Note that these values will vary depending on the efficiency 3071of the compiler and the compiler options used during generation. 3072 3073 Previous Release: 3074 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 3075 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 3076 Current Release: 3077 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 3078 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 3079 3080 30812) iASL Compiler/Disassembler: 3082 3083A remark is issued if the effective compile-time length of a package or 3084buffer is zero. Previously, this was a warning. 3085 3086---------------------------------------- 308716 September 2005. Summary of changes for version 20050916: 3088 30891) ACPI CA Core Subsystem: 3090 3091Fixed a problem within the Resource Manager where support for the Generic 3092Register descriptor was not fully implemented. This descriptor is now fully 3093recognized, parsed, disassembled, and displayed. 3094 3095Completely restructured the Resource Manager code to utilize table-driven 3096dispatch and lookup, eliminating many of the large switch() statements. This 3097reduces overall subsystem code size and code complexity. Affects the 3098resource parsing and construction, disassembly, and debug dump output. 3099 3100Cleaned up and restructured the debug dump output for all resource 3101descriptors. Improved readability of the output and reduced code size. 3102 3103Fixed a problem where changes to internal data structures caused the 3104optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 3105 3106Code and Data Size: The current and previous library sizes for the core 3107subsystem are shown below. These are the code and data sizes for the 3108acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3109values do not include any ACPI driver or OSPM code. The debug version of the 3110code includes the debug output trace mechanism and has a much larger code 3111and data size. Note that these values will vary depending on the efficiency 3112of the compiler and the compiler options used during generation. 3113 3114 Previous Release: 3115 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 3116 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 3117 Current Release: 3118 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 3119 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 3120 3121 31222) iASL Compiler/Disassembler: 3123 3124Updated the disassembler to automatically insert an EndDependentFn() macro 3125into the ASL stream if this macro is missing in the original AML code, 3126simplifying compilation of the resulting ASL module. 3127 3128Fixed a problem in the disassembler where a disassembled ResourceSource 3129string (within a large resource descriptor) was not surrounded by quotes and 3130not followed by a comma, causing errors when the resulting ASL module was 3131compiled. Also, escape sequences within a ResourceSource string are now 3132handled correctly (especially "\\") 3133 3134---------------------------------------- 313502 September 2005. Summary of changes for version 20050902: 3136 31371) ACPI CA Core Subsystem: 3138 3139Fixed a problem with the internal Owner ID allocation and deallocation 3140mechanisms for control method execution and recursive method invocation. 3141This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 3142messages seen on some systems. Recursive method invocation depth is 3143currently limited to 255. (Alexey Starikovskiy) 3144 3145Completely eliminated all vestiges of support for the "module-level 3146executable code" until this support is fully implemented and debugged. This 3147should eliminate the NO_RETURN_VALUE exceptions seen during table load on 3148some systems that invoke this support. 3149 3150Fixed a problem within the resource manager code where the transaction flags 3151for a 64-bit address descriptor were handled incorrectly in the type- 3152specific flag byte. 3153 3154Consolidated duplicate code within the address descriptor resource manager 3155code, reducing overall subsystem code size. 3156 3157Fixed a fault when using the AML debugger "disassemble" command to 3158disassemble individual control methods. 3159 3160Removed references to the "release_current" directory within the Unix 3161release package. 3162 3163Code and Data Size: The current and previous core subsystem library sizes 3164are shown below. These are the code and data sizes for the acpica.lib 3165produced by the Microsoft Visual C++ 6.0 compiler. These values do not 3166include any ACPI driver or OSPM code. The debug version of the code includes 3167the debug output trace mechanism and has a much larger code and data size. 3168Note that these values will vary depending on the efficiency of the compiler 3169and the compiler options used during generation. 3170 3171 Previous Release: 3172 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3173 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 3174 Current Release: 3175 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 3176 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 3177 3178 31792) iASL Compiler/Disassembler: 3180 3181Implemented an error check for illegal duplicate values in the interrupt and 3182dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 3183Interrupt(). 3184 3185Implemented error checking for the Irq() and IrqNoFlags() macros to detect 3186too many values in the interrupt list (16 max) and invalid values in the 3187list (range 0 - 15) 3188 3189The maximum length string literal within an ASL file is now restricted to 3190200 characters as per the ACPI specification. 3191 3192Fixed a fault when using the -ln option (generate namespace listing). 3193 3194Implemented an error check to determine if a DescriptorName within a 3195resource descriptor has already been used within the current scope. 3196 3197---------------------------------------- 319815 August 2005. Summary of changes for version 20050815: 3199 32001) ACPI CA Core Subsystem: 3201 3202Implemented a full bytewise compare to determine if a table load request is 3203attempting to load a duplicate table. The compare is performed if the table 3204signatures and table lengths match. This will allow different tables with 3205the same OEM Table ID and revision to be loaded - probably against the ACPI 3206specification, but discovered in the field nonetheless. 3207 3208Added the changes.txt logfile to each of the zipped release packages. 3209 3210Code and Data Size: Current and previous core subsystem library sizes are 3211shown below. These are the code and data sizes for the acpica.lib produced 3212by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3213any ACPI driver or OSPM code. The debug version of the code includes the 3214debug output trace mechanism and has a much larger code and data size. Note 3215that these values will vary depending on the efficiency of the compiler and 3216the compiler options used during generation. 3217 3218 Previous Release: 3219 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3220 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 3221 Current Release: 3222 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3223 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 3224 3225 32262) iASL Compiler/Disassembler: 3227 3228Fixed a problem where incorrect AML code could be generated for Package 3229objects if optimization is disabled (via the -oa switch). 3230 3231Fixed a problem with where incorrect AML code is generated for variable- 3232length packages when the package length is not specified and the number of 3233initializer values is greater than 255. 3234 3235 3236---------------------------------------- 323729 July 2005. Summary of changes for version 20050729: 3238 32391) ACPI CA Core Subsystem: 3240 3241Implemented support to ignore an attempt to install/load a particular ACPI 3242table more than once. Apparently there exists BIOS code that repeatedly 3243attempts to load the same SSDT upon certain events. With assistance from 3244Venkatesh Pallipadi. 3245 3246Restructured the main interface to the AML parser in order to correctly 3247handle all exceptional conditions. This will prevent leakage of the OwnerId 3248resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some 3249machines. With assistance from Alexey Starikovskiy. 3250 3251Support for "module level code" has been disabled in this version due to a 3252number of issues that have appeared on various machines. The support can be 3253enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 3254compilation. When the issues are fully resolved, the code will be enabled by 3255default again. 3256 3257Modified the internal functions for debug print support to define the 3258FunctionName parameter as a (const char *) for compatibility with compiler 3259built-in macros such as __FUNCTION__, etc. 3260 3261Linted the entire ACPICA source tree for both 32-bit and 64-bit. 3262 3263Implemented support to display an object count summary for the AML Debugger 3264commands Object and Methods. 3265 3266Code and Data Size: Current and previous core subsystem library sizes are 3267shown below. These are the code and data sizes for the acpica.lib produced 3268by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3269any ACPI driver or OSPM code. The debug version of the code includes the 3270debug output trace mechanism and has a much larger code and data size. Note 3271that these values will vary depending on the efficiency of the compiler and 3272the compiler options used during generation. 3273 3274 Previous Release: 3275 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 3276 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 3277 Current Release: 3278 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3279 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 3280 3281 32822) iASL Compiler/Disassembler: 3283 3284Fixed a regression that appeared in the 20050708 version of the compiler 3285where an error message was inadvertently emitted for invocations of the _OSI 3286reserved control method. 3287 3288---------------------------------------- 328908 July 2005. Summary of changes for version 20050708: 3290 32911) ACPI CA Core Subsystem: 3292 3293The use of the CPU stack in the debug version of the subsystem has been 3294considerably reduced. Previously, a debug structure was declared in every 3295function that used the debug macros. This structure has been removed in 3296favor of declaring the individual elements as parameters to the debug 3297functions. This reduces the cumulative stack use during nested execution of 3298ACPI function calls at the cost of a small increase in the code size of the 3299debug version of the subsystem. With assistance from Alexey Starikovskiy and 3300Len Brown. 3301 3302Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 3303headers to define a macro that will return the current function name at 3304runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by 3305the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 3306compiler-dependent header, the function name is saved on the CPU stack (one 3307pointer per function.) This mechanism is used because apparently there 3308exists no standard ANSI-C defined macro that that returns the function name. 3309 3310Redesigned and reimplemented the "Owner ID" mechanism used to track 3311namespace objects created/deleted by ACPI tables and control method 3312execution. A bitmap is now used to allocate and free the IDs, thus solving 3313the wraparound problem present in the previous implementation. The size of 3314the namespace node descriptor was reduced by 2 bytes as a result (Alexey 3315Starikovskiy). 3316 3317Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield 3318flag definitions within the headers for the predefined ACPI tables. These 3319have been replaced by UINT8_BIT in order to increase the code portability of 3320the subsystem. If the use of UINT8 remains a problem, we may be forced to 3321eliminate bitfields entirely because of a lack of portability. 3322 3323Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This 3324is a frequently used function and this improvement increases the performance 3325of the entire subsystem (Alexey Starikovskiy). 3326 3327Fixed several possible memory leaks and the inverse - premature object 3328deletion (Alexey Starikovskiy). 3329 3330Code and Data Size: Current and previous core subsystem library sizes are 3331shown below. These are the code and data sizes for the acpica.lib produced 3332by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3333any ACPI driver or OSPM code. The debug version of the code includes the 3334debug output trace mechanism and has a much larger code and data size. Note 3335that these values will vary depending on the efficiency of the compiler and 3336the compiler options used during generation. 3337 3338 Previous Release: 3339 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 3340 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 3341 Current Release: 3342 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 3343 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 3344 3345---------------------------------------- 334624 June 2005. Summary of changes for version 20050624: 3347 33481) ACPI CA Core Subsystem: 3349 3350Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 3351the host-defined cache object. This allows the OSL implementation to define 3352and type this object in any manner desired, simplifying the OSL 3353implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 3354Linux, and should be defined in the OS-specific header file for other 3355operating systems as required. 3356 3357Changed the interface to AcpiOsAcquireObject to directly return the 3358requested object as the function return (instead of ACPI_STATUS.) This 3359change was made for performance reasons, since this is the purpose of the 3360interface in the first place. AcpiOsAcquireObject is now similar to the 3361AcpiOsAllocate interface. 3362 3363Implemented a new AML debugger command named Businfo. This command displays 3364information about all devices that have an associate _PRT object. The _ADR, 3365_HID, _UID, and _CID are displayed for these devices. 3366 3367Modified the initialization sequence in AcpiInitializeSubsystem to call the 3368OSL interface AcpiOslInitialize first, before any local initialization. This 3369change was required because the global initialization now calls OSL 3370interfaces. 3371 3372Enhanced the Dump command to display the entire contents of Package objects 3373(including all sub-objects and their values.) 3374 3375Restructured the code base to split some files because of size and/or 3376because the code logically belonged in a separate file. New files are listed 3377below. All makefiles and project files included in the ACPI CA release have 3378been updated. 3379 utilities/utcache.c /* Local cache interfaces */ 3380 utilities/utmutex.c /* Local mutex support */ 3381 utilities/utstate.c /* State object support */ 3382 interpreter/parser/psloop.c /* Main AML parse loop */ 3383 3384Code and Data Size: Current and previous core subsystem library sizes are 3385shown below. These are the code and data sizes for the acpica.lib produced 3386by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3387any ACPI driver or OSPM code. The debug version of the code includes the 3388debug output trace mechanism and has a much larger code and data size. Note 3389that these values will vary depending on the efficiency of the compiler and 3390the compiler options used during generation. 3391 3392 Previous Release: 3393 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 3394 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 3395 Current Release: 3396 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 3397 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 3398 3399 34002) iASL Compiler/Disassembler: 3401 3402Fixed a regression introduced in version 20050513 where the use of a Package 3403object within a Case() statement caused a compile time exception. The 3404original behavior has been restored (a Match() operator is emitted.) 3405 3406---------------------------------------- 340717 June 2005. Summary of changes for version 20050617: 3408 34091) ACPI CA Core Subsystem: 3410 3411Moved the object cache operations into the OS interface layer (OSL) to allow 3412the host OS to handle these operations if desired (for example, the Linux 3413OSL will invoke the slab allocator). This support is optional; the compile 3414time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache 3415code in the ACPI CA core. The new OSL interfaces are shown below. See 3416utalloc.c for an example implementation, and acpiosxf.h for the exact 3417interface definitions. With assistance from Alexey Starikovskiy. 3418 AcpiOsCreateCache 3419 AcpiOsDeleteCache 3420 AcpiOsPurgeCache 3421 AcpiOsAcquireObject 3422 AcpiOsReleaseObject 3423 3424Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return 3425and restore a flags parameter. This fits better with many OS lock models. 3426Note: the current execution state (interrupt handler or not) is no longer 3427passed to these interfaces. If necessary, the OSL must determine this state 3428by itself, a simple and fast operation. With assistance from Alexey 3429Starikovskiy. 3430 3431Fixed a problem in the ACPI table handling where a valid XSDT was assumed 3432present if the revision of the RSDP was 2 or greater. According to the ACPI 3433specification, the XSDT is optional in all cases, and the table manager 3434therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 3435Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain 3436only the RSDT. 3437 3438Fixed an interpreter problem with the Mid() operator in the case of an input 3439string where the resulting output string is of zero length. It now correctly 3440returns a valid, null terminated string object instead of a string object 3441with a null pointer. 3442 3443Fixed a problem with the control method argument handling to allow a store 3444to an Arg object that already contains an object of type Device. The Device 3445object is now correctly overwritten. Previously, an error was returned. 3446 3447 3448Enhanced the debugger Find command to emit object values in addition to the 3449found object pathnames. The output format is the same as the dump namespace 3450command. 3451 3452Enhanced the debugger Set command. It now has the ability to set the value 3453of any Named integer object in the namespace (Previously, only method locals 3454and args could be set.) 3455 3456Code and Data Size: Current and previous core subsystem library sizes are 3457shown below. These are the code and data sizes for the acpica.lib produced 3458by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3459any ACPI driver or OSPM code. The debug version of the code includes the 3460debug output trace mechanism and has a much larger code and data size. Note 3461that these values will vary depending on the efficiency of the compiler and 3462the compiler options used during generation. 3463 3464 Previous Release: 3465 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 3466 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 3467 Current Release: 3468 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 3469 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 3470 3471 34722) iASL Compiler/Disassembler: 3473 3474Fixed a regression in the disassembler where if/else/while constructs were 3475output incorrectly. This problem was introduced in the previous release 3476(20050526). This problem also affected the single-step disassembly in the 3477debugger. 3478 3479Fixed a problem where compiling the reserved _OSI method would randomly (but 3480rarely) produce compile errors. 3481 3482Enhanced the disassembler to emit compilable code in the face of incorrect 3483AML resource descriptors. If the optional ResourceSourceIndex is present, 3484but the ResourceSource is not, do not emit the ResourceSourceIndex in the 3485disassembly. Otherwise, the resulting code cannot be compiled without 3486errors. 3487 3488---------------------------------------- 348926 May 2005. Summary of changes for version 20050526: 3490 34911) ACPI CA Core Subsystem: 3492 3493Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 3494the module level (not within a control method.) These opcodes are executed 3495exactly once at the time the table is loaded. This type of code was legal up 3496until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in 3497order to provide backwards compatibility with earlier BIOS implementations. 3498This eliminates the "Encountered executable code at module level" warning 3499that was previously generated upon detection of such code. 3500 3501Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 3502inadvertently be generated during the lookup of namespace objects in the 3503second pass parse of ACPI tables and control methods. It appears that this 3504problem could occur during the resolution of forward references to namespace 3505objects. 3506 3507Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 3508corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 3509allows the deadlock detection debug code to be compiled out in the normal 3510case, improving mutex performance (and overall subsystem performance) 3511considerably. 3512 3513Implemented a handful of miscellaneous fixes for possible memory leaks on 3514error conditions and error handling control paths. These fixes were 3515suggested by FreeBSD and the Coverity Prevent source code analysis tool. 3516 3517Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c) 3518to prevent a fault in this error case. 3519 3520Code and Data Size: Current and previous core subsystem library sizes are 3521shown below. These are the code and data sizes for the acpica.lib produced 3522by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3523any ACPI driver or OSPM code. The debug version of the code includes the 3524debug output trace mechanism and has a much larger code and data size. Note 3525that these values will vary depending on the efficiency of the compiler and 3526the compiler options used during generation. 3527 3528 Previous Release: 3529 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 3530 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 3531 Current Release: 3532 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 3533 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 3534 3535 35362) iASL Compiler/Disassembler: 3537 3538Implemented support to allow Type 1 and Type 2 ASL operators to appear at 3539the module level (not within a control method.) These operators will be 3540executed once at the time the table is loaded. This type of code was legal 3541up until the release of ACPI 2.0B (2002) and is now supported by the iASL 3542compiler in order to provide backwards compatibility with earlier BIOS ASL 3543code. 3544 3545The ACPI integer width (specified via the table revision ID or the -r 3546override, 32 or 64 bits) is now used internally during compile-time constant 3547folding to ensure that constants are truncated to 32 bits if necessary. 3548Previously, the revision ID value was only emitted in the AML table header. 3549 3550An error message is now generated for the Mutex and Method operators if the 3551SyncLevel parameter is outside the legal range of 0 through 15. 3552 3553Fixed a problem with the Method operator ParameterTypes list handling (ACPI 35543.0). Previously, more than 2 types or 2 arguments generated a syntax error. 3555The actual underlying implementation of method argument typechecking is 3556still under development, however. 3557 3558---------------------------------------- 355913 May 2005. Summary of changes for version 20050513: 3560 35611) ACPI CA Core Subsystem: 3562 3563Implemented support for PCI Express root bridges -- added support for device 3564PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 3565 3566The interpreter now automatically truncates incoming 64-bit constants to 32 3567bits if currently executing out of a 32-bit ACPI table (Revision < 2). This 3568also affects the iASL compiler constant folding. (Note: as per below, the 3569iASL compiler no longer allows 64-bit constants within 32-bit tables.) 3570 3571Fixed a problem where string and buffer objects with "static" pointers 3572(pointers to initialization data within an ACPI table) were not handled 3573consistently. The internal object copy operation now always copies the data 3574to a newly allocated buffer, regardless of whether the source object is 3575static or not. 3576 3577Fixed a problem with the FromBCD operator where an implicit result 3578conversion was improperly performed while storing the result to the target 3579operand. Since this is an "explicit conversion" operator, the implicit 3580conversion should never be performed on the output. 3581 3582Fixed a problem with the CopyObject operator where a copy to an existing 3583named object did not always completely overwrite the existing object stored 3584at name. Specifically, a buffer-to-buffer copy did not delete the existing 3585buffer. 3586 3587Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and 3588structs for consistency. 3589 3590Code and Data Size: Current and previous core subsystem library sizes are 3591shown below. These are the code and data sizes for the acpica.lib produced 3592by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3593any ACPI driver or OSPM code. The debug version of the code includes the 3594debug output trace mechanism and has a much larger code and data size. Note 3595that these values will vary depending on the efficiency of the compiler and 3596the compiler options used during generation. 3597 3598 Previous Release: 3599 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 3600 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 3601 Current Release: (Same sizes) 3602 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 3603 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 3604 3605 36062) iASL Compiler/Disassembler: 3607 3608The compiler now emits a warning if an attempt is made to generate a 64-bit 3609integer constant from within a 32-bit ACPI table (Revision < 2). The integer 3610is truncated to 32 bits. 3611 3612Fixed a problem with large package objects: if the static length of the 3613package is greater than 255, the "variable length package" opcode is 3614emitted. Previously, this caused an error. This requires an update to the 3615ACPI spec, since it currently (incorrectly) states that packages larger than 3616255 elements are not allowed. 3617 3618The disassembler now correctly handles variable length packages and packages 3619larger than 255 elements. 3620 3621---------------------------------------- 362208 April 2005. Summary of changes for version 20050408: 3623 36241) ACPI CA Core Subsystem: 3625 3626Fixed three cases in the interpreter where an "index" argument to an ASL 3627function was still (internally) 32 bits instead of the required 64 bits. 3628This was the Index argument to the Index, Mid, and Match operators. 3629 3630The "strupr" function is now permanently local (AcpiUtStrupr), since this is 3631not a POSIX-defined function and not present in most kernel-level C 3632libraries. All references to the C library strupr function have been removed 3633from the headers. 3634 3635Completed the deployment of static functions/prototypes. All prototypes with 3636the static attribute have been moved from the headers to the owning C file. 3637 3638Implemented an extract option (-e) for the AcpiBin utility (AML binary 3639utility). This option allows the utility to extract individual ACPI tables 3640from the output of AcpiDmp. It provides the same functionality of the 3641acpixtract.pl perl script without the worry of setting the correct perl 3642options. AcpiBin runs on Windows and has not yet been generated/validated in 3643the Linux/Unix environment (but should be soon). 3644 3645Updated and fixed the table dump option for AcpiBin (-d). This option 3646converts a single ACPI table to a hex/ascii file, similar to the output of 3647AcpiDmp. 3648 3649Code and Data Size: Current and previous core subsystem library sizes are 3650shown below. These are the code and data sizes for the acpica.lib produced 3651by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3652any ACPI driver or OSPM code. The debug version of the code includes the 3653debug output trace mechanism and has a much larger code and data size. Note 3654that these values will vary depending on the efficiency of the compiler and 3655the compiler options used during generation. 3656 3657 Previous Release: 3658 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 3659 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 3660 Current Release: 3661 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 3662 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 3663 3664 36652) iASL Compiler/Disassembler: 3666 3667Disassembler fix: Added a check to ensure that the table length found in the 3668ACPI table header within the input file is not longer than the actual input 3669file size. This indicates some kind of file or table corruption. 3670 3671---------------------------------------- 367229 March 2005. Summary of changes for version 20050329: 3673 36741) ACPI CA Core Subsystem: 3675 3676An error is now generated if an attempt is made to create a Buffer Field of 3677length zero (A CreateField with a length operand of zero.) 3678 3679The interpreter now issues a warning whenever executable code at the module 3680level is detected during ACPI table load. This will give some idea of the 3681prevalence of this type of code. 3682 3683Implemented support for references to named objects (other than control 3684methods) within package objects. 3685 3686Enhanced package object output for the debug object. Package objects are now 3687completely dumped, showing all elements. 3688 3689Enhanced miscellaneous object output for the debug object. Any object can 3690now be written to the debug object (for example, a device object can be 3691written, and the type of the object will be displayed.) 3692 3693The "static" qualifier has been added to all local functions across both the 3694core subsystem and the iASL compiler. 3695 3696The number of "long" lines (> 80 chars) within the source has been 3697significantly reduced, by about 1/3. 3698 3699Cleaned up all header files to ensure that all CA/iASL functions are 3700prototyped (even static functions) and the formatting is consistent. 3701 3702Two new header files have been added, acopcode.h and acnames.h. 3703 3704Removed several obsolete functions that were no longer used. 3705 3706Code and Data Size: Current and previous core subsystem library sizes are 3707shown below. These are the code and data sizes for the acpica.lib produced 3708by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3709any ACPI driver or OSPM code. The debug version of the code includes the 3710debug output trace mechanism and has a much larger code and data size. Note 3711that these values will vary depending on the efficiency of the compiler and 3712the compiler options used during generation. 3713 3714 Previous Release: 3715 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 3716 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 3717 Current Release: 3718 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 3719 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 3720 3721 3722 37232) iASL Compiler/Disassembler: 3724 3725Fixed a problem with the resource descriptor generation/support. For the 3726ResourceSourceIndex and the ResourceSource fields, both must be present, or 3727both must be not present - can't have one without the other. 3728 3729The compiler now returns non-zero from the main procedure if any errors have 3730occurred during the compilation. 3731 3732 3733---------------------------------------- 373409 March 2005. Summary of changes for version 20050309: 3735 37361) ACPI CA Core Subsystem: 3737 3738The string-to-buffer implicit conversion code has been modified again after 3739a change to the ACPI specification. In order to match the behavior of the 3740other major ACPI implementation, the target buffer is no longer truncated if 3741the source string is smaller than an existing target buffer. This change 3742requires an update to the ACPI spec, and should eliminate the recent 3743AE_AML_BUFFER_LIMIT issues. 3744 3745The "implicit return" support was rewritten to a new algorithm that solves 3746the general case. Rather than attempt to determine when a method is about to 3747exit, the result of every ASL operator is saved momentarily until the very 3748next ASL operator is executed. Therefore, no matter how the method exits, 3749there will always be a saved implicit return value. This feature is only 3750enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate 3751AE_AML_NO_RETURN_VALUE errors when enabled. 3752 3753Implemented implicit conversion support for the predicate (operand) of the 3754If, Else, and While operators. String and Buffer arguments are automatically 3755converted to Integers. 3756 3757Changed the string-to-integer conversion behavior to match the new ACPI 3758errata: "If no integer object exists, a new integer is created. The ASCII 3759string is interpreted as a hexadecimal constant. Each string character is 3760interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 3761with the first character as the most significant digit, and ending with the 3762first non-hexadecimal character or end-of-string." This means that the first 3763non-hex character terminates the conversion and this is the code that was 3764changed. 3765 3766Fixed a problem where the ObjectType operator would fail (fault) when used 3767on an Index of a Package which pointed to a null package element. The 3768operator now properly returns zero (Uninitialized) in this case. 3769 3770Fixed a problem where the While operator used excessive memory by not 3771properly popping the result stack during execution. There was no memory leak 3772after execution, however. (Code provided by Valery Podrezov.) 3773 3774Fixed a problem where references to control methods within Package objects 3775caused the method to be invoked, instead of producing a reference object 3776pointing to the method. 3777 3778Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to 3779improve performance and reduce code size. (Code provided by Alexey 3780Starikovskiy.) 3781 3782Code and Data Size: Current and previous core subsystem library sizes are 3783shown below. These are the code and data sizes for the acpica.lib produced 3784by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3785any ACPI driver or OSPM code. The debug version of the code includes the 3786debug output trace mechanism and has a much larger code and data size. Note 3787that these values will vary depending on the efficiency of the compiler and 3788the compiler options used during generation. 3789 3790 Previous Release: 3791 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 3792 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 3793 Current Release: 3794 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 3795 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 3796 3797 37982) iASL Compiler/Disassembler: 3799 3800Fixed a problem with the Return operator with no arguments. Since the AML 3801grammar for the byte encoding requires an operand for the Return opcode, the 3802compiler now emits a Return(Zero) for this case. An ACPI specification 3803update has been written for this case. 3804 3805For tables other than the DSDT, namepath optimization is automatically 3806disabled. This is because SSDTs can be loaded anywhere in the namespace, the 3807compiler has no knowledge of where, and thus cannot optimize namepaths. 3808 3809Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 3810inadvertently omitted from the ACPI specification, and will require an 3811update to the spec. 3812 3813The source file scan for ASCII characters is now optional (-a). This change 3814was made because some vendors place non-ascii characters within comments. 3815However, the scan is simply a brute-force byte compare to ensure all 3816characters in the file are in the range 0x00 to 0x7F. 3817 3818Fixed a problem with the CondRefOf operator where the compiler was 3819inappropriately checking for the existence of the target. Since the point of 3820the operator is to check for the existence of the target at run-time, the 3821compiler no longer checks for the target existence. 3822 3823Fixed a problem where errors generated from the internal AML interpreter 3824during constant folding were not handled properly, causing a fault. 3825 3826Fixed a problem with overly aggressive range checking for the Stall 3827operator. The valid range (max 255) is now only checked if the operand is of 3828type Integer. All other operand types cannot be statically checked. 3829 3830Fixed a problem where control method references within the RefOf, DeRefOf, 3831and ObjectType operators were not treated properly. They are now treated as 3832actual references, not method invocations. 3833 3834Fixed and enhanced the "list namespace" option (-ln). This option was broken 3835a number of releases ago. 3836 3837Improved error handling for the Field, IndexField, and BankField operators. 3838The compiler now cleanly reports and recovers from errors in the field 3839component (FieldUnit) list. 3840 3841Fixed a disassembler problem where the optional ResourceDescriptor fields 3842TRS and TTP were not always handled correctly. 3843 3844Disassembler - Comments in output now use "//" instead of "/*" 3845 3846---------------------------------------- 384728 February 2005. Summary of changes for version 20050228: 3848 38491) ACPI CA Core Subsystem: 3850 3851Fixed a problem where the result of an Index() operator (an object 3852reference) must increment the reference count on the target object for the 3853life of the object reference. 3854 3855Implemented AML Interpreter and Debugger support for the new ACPI 3.0 3856Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace 3857resource descriptors. 3858 3859Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 3860Space Descriptor" string, indicating interpreter support for the descriptors 3861above. 3862 3863Implemented header support for the new ACPI 3.0 FADT flag bits. 3864 3865Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1 3866status/enable registers. 3867 3868Updated header support for the MADT processor local Apic struct and MADT 3869platform interrupt source struct for new ACPI 3.0 fields. 3870 3871Implemented header support for the SRAT and SLIT ACPI tables. 3872 3873Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag 3874at runtime. 3875 3876Code and Data Size: Current and previous core subsystem library sizes are 3877shown below. These are the code and data sizes for the acpica.lib produced 3878by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3879any ACPI driver or OSPM code. The debug version of the code includes the 3880debug output trace mechanism and has a much larger code and data size. Note 3881that these values will vary depending on the efficiency of the compiler and 3882the compiler options used during generation. 3883 3884 Previous Release: 3885 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 3886 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 3887 Current Release: 3888 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 3889 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 3890 3891 38922) iASL Compiler/Disassembler: 3893 3894Fixed a problem with the internal 64-bit String-to-integer conversion with 3895strings less than two characters long. 3896 3897Fixed a problem with constant folding where the result of the Index() 3898operator can not be considered a constant. This means that Index() cannot be 3899a type3 opcode and this will require an update to the ACPI specification. 3900 3901Disassembler: Implemented support for the TTP, MTP, and TRS resource 3902descriptor fields. These fields were inadvertently ignored and not output in 3903the disassembly of the resource descriptor. 3904 3905 3906 ---------------------------------------- 390711 February 2005. Summary of changes for version 20050211: 3908 39091) ACPI CA Core Subsystem: 3910 3911Implemented ACPI 3.0 support for implicit conversion within the Match() 3912operator. MatchObjects can now be of type integer, buffer, or string instead 3913of just type integer. Package elements are implicitly converted to the type 3914of the MatchObject. This change aligns the behavior of Match() with the 3915behavior of the other logical operators (LLess(), etc.) It also requires an 3916errata change to the ACPI specification as this support was intended for 3917ACPI 3.0, but was inadvertently omitted. 3918 3919Fixed a problem with the internal implicit "to buffer" conversion. Strings 3920that are converted to buffers will cause buffer truncation if the string is 3921smaller than the target buffer. Integers that are converted to buffers will 3922not cause buffer truncation, only zero extension (both as per the ACPI 3923spec.) The problem was introduced when code was added to truncate the 3924buffer, but this should not be performed in all cases, only the string case. 3925 3926Fixed a problem with the Buffer and Package operators where the interpreter 3927would get confused if two such operators were used as operands to an ASL 3928operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 3929stack was not being popped after the execution of these operators, resulting 3930in an AE_NO_RETURN_VALUE exception. 3931 3932Fixed a problem with constructs of the form Store(Index(...),...). The 3933reference object returned from Index was inadvertently resolved to an actual 3934value. This problem was introduced in version 20050114 when the behavior of 3935Store() was modified to restrict the object types that can be used as the 3936source operand (to match the ACPI specification.) 3937 3938Reduced excessive stack use within the AcpiGetObjectInfo procedure. 3939 3940Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 3941 3942Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 3943 3944Code and Data Size: Current and previous core subsystem library sizes are 3945shown below. These are the code and data sizes for the acpica.lib produced 3946by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3947any ACPI driver or OSPM code. The debug version of the code includes the 3948debug output trace mechanism and has a much larger code and data size. Note 3949that these values will vary depending on the efficiency of the compiler and 3950the compiler options used during generation. 3951 3952 Previous Release: 3953 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 3954 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 3955 Current Release: 3956 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 3957 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 3958 3959 39602) iASL Compiler/Disassembler: 3961 3962Fixed a code generation problem in the constant folding optimization code 3963where incorrect code was generated if a constant was reduced to a buffer 3964object (i.e., a reduced type 5 opcode.) 3965 3966Fixed a typechecking problem for the ToBuffer operator. Caused by an 3967incorrect return type in the internal opcode information table. 3968 3969---------------------------------------- 397025 January 2005. Summary of changes for version 20050125: 3971 39721) ACPI CA Core Subsystem: 3973 3974Fixed a recently introduced problem with the Global Lock where the 3975underlying semaphore was not created. This problem was introduced in 3976version 20050114, and caused an AE_AML_NO_OPERAND exception during an 3977Acquire() operation on _GL. 3978 3979The local object cache is now optional, and is disabled by default. Both 3980AcpiExec and the iASL compiler enable the cache because they run in user 3981mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE 3982to enable the local cache. 3983 3984Fixed an issue in the internal function AcpiUtEvaluateObject concerning the 3985optional "implicit return" support where an error was returned if no return 3986object was expected, but one was implicitly returned. AE_OK is now returned 3987in this case and the implicitly returned object is deleted. 3988AcpiUtEvaluateObject is only occasionally used, and only to execute reserved 3989methods such as _STA and _INI where the return type is known up front. 3990 3991Fixed a few issues with the internal convert-to-integer code. It now returns 3992an error if an attempt is made to convert a null string, a string of only 3993blanks/tabs, or a zero-length buffer. This affects both implicit conversion 3994and explicit conversion via the ToInteger() operator. 3995 3996The internal debug code in AcpiUtAcquireMutex has been commented out. It is 3997not needed for normal operation and should increase the performance of the 3998entire subsystem. The code remains in case it is needed for debug purposes 3999again. 4000 4001The AcpiExec source and makefile are included in the Unix/Linux package for 4002the first time. 4003 4004Code and Data Size: Current and previous core subsystem library sizes are 4005shown below. These are the code and data sizes for the acpica.lib produced 4006by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4007any ACPI driver or OSPM code. The debug version of the code includes the 4008debug output trace mechanism and has a much larger code and data size. Note 4009that these values will vary depending on the efficiency of the compiler and 4010the compiler options used during generation. 4011 4012 Previous Release: 4013 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 4014 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 4015 Current Release: 4016 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 4017 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 4018 40192) iASL Compiler/Disassembler: 4020 4021Switch/Case support: A warning is now issued if the type of the Switch value 4022cannot be determined at compile time. For example, Switch(Arg0) will 4023generate the warning, and the type is assumed to be an integer. As per the 4024ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the 4025warning. 4026 4027Switch/Case support: Implemented support for buffer and string objects as 4028the switch value. This is an ACPI 3.0 feature, now that LEqual supports 4029buffers and strings. 4030 4031Switch/Case support: The emitted code for the LEqual() comparisons now uses 4032the switch value as the first operand, not the second. The case value is now 4033the second operand, and this allows the case value to be implicitly 4034converted to the type of the switch value, not the other way around. 4035 4036Switch/Case support: Temporary variables are now emitted immediately within 4037the control method, not at the global level. This means that there are now 403836 temps available per-method, not 36 temps per-module as was the case with 4039the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 4040 4041---------------------------------------- 404214 January 2005. Summary of changes for version 20050114: 4043 4044Added 2005 copyright to all module headers. This affects every module in 4045the core subsystem, iASL compiler, and the utilities. 4046 40471) ACPI CA Core Subsystem: 4048 4049Fixed an issue with the String-to-Buffer conversion code where the string 4050null terminator was not included in the buffer after conversion, but there 4051is existing ASL that assumes the string null terminator is included. This is 4052the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 4053introduced in the previous version when the code was updated to correctly 4054set the converted buffer size as per the ACPI specification. The ACPI spec 4055is ambiguous and will be updated to specify that the null terminator must be 4056included in the converted buffer. This also affects the ToBuffer() ASL 4057operator. 4058 4059Fixed a problem with the Mid() ASL/AML operator where it did not work 4060correctly on Buffer objects. Newly created sub-buffers were not being marked 4061as initialized. 4062 4063 4064Fixed a problem in AcpiTbFindTable where incorrect string compares were 4065performed on the OemId and OemTableId table header fields. These fields are 4066not null terminated, so strncmp is now used instead of strcmp. 4067 4068Implemented a restriction on the Store() ASL/AML operator to align the 4069behavior with the ACPI specification. Previously, any object could be used 4070as the source operand. Now, the only objects that may be used are Integers, 4071Buffers, Strings, Packages, Object References, and DDB Handles. If 4072necessary, the original behavior can be restored by enabling the 4073EnableInterpreterSlack flag. 4074 4075Enhanced the optional "implicit return" support to allow an implicit return 4076value from methods that are invoked externally via the AcpiEvaluateObject 4077interface. This enables implicit returns from the _STA and _INI methods, 4078for example. 4079 4080Changed the Revision() ASL/AML operator to return the current version of the 4081AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned 4082the supported ACPI version (This is the function of the _REV method). 4083 4084Updated the _REV predefined method to return the currently supported version 4085of ACPI, now 3. 4086 4087Implemented batch mode option for the AcpiExec utility (-b). 4088 4089Code and Data Size: Current and previous core subsystem library sizes are 4090shown below. These are the code and data sizes for the acpica.lib produced 4091by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4092any ACPI driver or OSPM code. The debug version of the code includes the 4093debug output trace mechanism and has a much larger code and data size. Note 4094that these values will vary depending on the efficiency of the compiler and 4095the compiler options used during generation. 4096 4097 Previous Release: 4098 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4099 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 4100 Current Release: 4101 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 4102 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 4103 4104---------------------------------------- 410510 December 2004. Summary of changes for version 20041210: 4106 4107ACPI 3.0 support is nearing completion in both the iASL compiler and the 4108ACPI CA core subsystem. 4109 41101) ACPI CA Core Subsystem: 4111 4112Fixed a problem in the ToDecimalString operator where the resulting string 4113length was incorrectly calculated. The length is now calculated exactly, 4114eliminating incorrect AE_STRING_LIMIT exceptions. 4115 4116Fixed a problem in the ToHexString operator to allow a maximum 200 character 4117string to be produced. 4118 4119Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy 4120routine where the length of the resulting buffer was not truncated to the 4121new size (if the target buffer already existed). 4122 4123Code and Data Size: Current and previous core subsystem library sizes are 4124shown below. These are the code and data sizes for the acpica.lib produced 4125by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4126any ACPI driver or OSPM code. The debug version of the code includes the 4127debug output trace mechanism and has a much larger code and data size. Note 4128that these values will vary depending on the efficiency of the compiler and 4129the compiler options used during generation. 4130 4131 Previous Release: 4132 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4133 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 4134 Current Release: 4135 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4136 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 4137 4138 41392) iASL Compiler/Disassembler: 4140 4141Implemented the new ACPI 3.0 resource template macros - DWordSpace, 4142ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 4143Includes support in the disassembler. 4144 4145Implemented support for the new (ACPI 3.0) parameter to the Register macro, 4146AccessSize. 4147 4148Fixed a problem where the _HE resource name for the Interrupt macro was 4149referencing bit 0 instead of bit 1. 4150 4151Implemented check for maximum 255 interrupts in the Interrupt macro. 4152 4153Fixed a problem with the predefined resource descriptor names where 4154incorrect AML code was generated if the offset within the resource buffer 4155was 0 or 1. The optimizer shortened the AML code to a single byte opcode 4156but did not update the surrounding package lengths. 4157 4158Changes to the Dma macro: All channels within the channel list must be in 4159the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 4160optional (default is BusMaster). 4161 4162Implemented check for maximum 7 data bytes for the VendorShort macro. 4163 4164The ReadWrite parameter is now optional for the Memory32 and similar macros. 4165 4166---------------------------------------- 416703 December 2004. Summary of changes for version 20041203: 4168 41691) ACPI CA Core Subsystem: 4170 4171The low-level field insertion/extraction code (exfldio) has been completely 4172rewritten to eliminate unnecessary complexity, bugs, and boundary 4173conditions. 4174 4175Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString 4176operators where the input operand could be inadvertently deleted if no 4177conversion was necessary (e.g., if the input to ToInteger was an Integer 4178object.) 4179 4180Fixed a problem with the ToDecimalString and ToHexString where an incorrect 4181exception code was returned if the resulting string would be > 200 chars. 4182AE_STRING_LIMIT is now returned. 4183 4184Fixed a problem with the Concatenate operator where AE_OK was always 4185returned, even if the operation failed. 4186 4187Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 4188semaphores to be allocated. 4189 4190Code and Data Size: Current and previous core subsystem library sizes are 4191shown below. These are the code and data sizes for the acpica.lib produced 4192by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4193any ACPI driver or OSPM code. The debug version of the code includes the 4194debug output trace mechanism and has a much larger code and data size. Note 4195that these values will vary depending on the efficiency of the compiler and 4196the compiler options used during generation. 4197 4198 Previous Release: 4199 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 4200 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 4201 Current Release: 4202 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4203 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 4204 4205 42062) iASL Compiler/Disassembler: 4207 4208Fixed typechecking for the ObjectType and SizeOf operators. Problem was 4209recently introduced in 20041119. 4210 4211Fixed a problem with the ToUUID macro where the upper nybble of each buffer 4212byte was inadvertently set to zero. 4213 4214---------------------------------------- 421519 November 2004. Summary of changes for version 20041119: 4216 42171) ACPI CA Core Subsystem: 4218 4219Fixed a problem in the internal ConvertToInteger routine where new integers 4220were not truncated to 32 bits for 32-bit ACPI tables. This routine converts 4221buffers and strings to integers. 4222 4223Implemented support to store a value to an Index() on a String object. This 4224is an ACPI 2.0 feature that had not yet been implemented. 4225 4226Implemented new behavior for storing objects to individual package elements 4227(via the Index() operator). The previous behavior was to invoke the implicit 4228conversion rules if an object was already present at the index. The new 4229behavior is to simply delete any existing object and directly store the new 4230object. Although the ACPI specification seems unclear on this subject, other 4231ACPI implementations behave in this manner. (This is the root of the 4232AE_BAD_HEX_CONSTANT issue.) 4233 4234Modified the RSDP memory scan mechanism to support the extended checksum for 4235ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 4236RSDP signature is found with a valid checksum. 4237 4238Code and Data Size: Current and previous core subsystem library sizes are 4239shown below. These are the code and data sizes for the acpica.lib produced 4240by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4241any ACPI driver or OSPM code. The debug version of the code includes the 4242debug output trace mechanism and has a much larger code and data size. Note 4243that these values will vary depending on the efficiency of the compiler and 4244the compiler options used during generation. 4245 4246 Previous Release: 4247 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 4248 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 4249 Current Release: 4250 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 4251 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 4252 4253 42542) iASL Compiler/Disassembler: 4255 4256Fixed a missing semicolon in the aslcompiler.y file. 4257 4258---------------------------------------- 425905 November 2004. Summary of changes for version 20041105: 4260 42611) ACPI CA Core Subsystem: 4262 4263Implemented support for FADT revision 2. This was an interim table (between 4264ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 4265 4266Implemented optional support to allow uninitialized LocalX and ArgX 4267variables in a control method. The variables are initialized to an Integer 4268object with a value of zero. This support is enabled by setting the 4269AcpiGbl_EnableInterpreterSlack flag to TRUE. 4270 4271Implemented support for Integer objects for the SizeOf operator. Either 4 4272or 8 is returned, depending on the current integer size (32-bit or 64-bit, 4273depending on the parent table revision). 4274 4275Fixed a problem in the implementation of the SizeOf and ObjectType operators 4276where the operand was resolved to a value too early, causing incorrect 4277return values for some objects. 4278 4279Fixed some possible memory leaks during exceptional conditions. 4280 4281Code and Data Size: Current and previous core subsystem library sizes are 4282shown below. These are the code and data sizes for the acpica.lib produced 4283by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4284any ACPI driver or OSPM code. The debug version of the code includes the 4285debug output trace mechanism and has a much larger code and data size. Note 4286that these values will vary depending on the efficiency of the compiler and 4287the compiler options used during generation. 4288 4289 Previous Release: 4290 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 4291 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 4292 Current Release: 4293 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 4294 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 4295 4296 42972) iASL Compiler/Disassembler: 4298 4299Implemented support for all ACPI 3.0 reserved names and methods. 4300 4301Implemented all ACPI 3.0 grammar elements in the front-end, including 4302support for semicolons. 4303 4304Implemented the ACPI 3.0 Function() and ToUUID() macros 4305 4306Fixed a problem in the disassembler where a Scope() operator would not be 4307emitted properly if the target of the scope was in another table. 4308 4309---------------------------------------- 431015 October 2004. Summary of changes for version 20041015: 4311 4312Note: ACPI CA is currently undergoing an in-depth and complete formal 4313evaluation to test/verify the following areas. Other suggestions are 4314welcome. This will result in an increase in the frequency of releases and 4315the number of bug fixes in the next few months. 4316 - Functional tests for all ASL/AML operators 4317 - All implicit/explicit type conversions 4318 - Bit fields and operation regions 4319 - 64-bit math support and 32-bit-only "truncated" math support 4320 - Exceptional conditions, both compiler and interpreter 4321 - Dynamic object deletion and memory leaks 4322 - ACPI 3.0 support when implemented 4323 - External interfaces to the ACPI subsystem 4324 4325 43261) ACPI CA Core Subsystem: 4327 4328Fixed two alignment issues on 64-bit platforms - within debug statements in 4329AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address 4330field within the non-aligned ACPI generic address structure. 4331 4332Fixed a problem in the Increment and Decrement operators where incorrect 4333operand resolution could result in the inadvertent modification of the 4334original integer when the integer is passed into another method as an 4335argument and the arg is then incremented/decremented. 4336 4337Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit 4338BCD number were truncated during conversion. 4339 4340Fixed a problem in the ToDecimal operator where the length of the resulting 4341string could be set incorrectly too long if the input operand was a Buffer 4342object. 4343 4344Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0) 4345within a buffer would prematurely terminate a compare between buffer 4346objects. 4347 4348Added a check for string overflow (>200 characters as per the ACPI 4349specification) during the Concatenate operator with two string operands. 4350 4351Code and Data Size: Current and previous core subsystem library sizes are 4352shown below. These are the code and data sizes for the acpica.lib produced 4353by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4354any ACPI driver or OSPM code. The debug version of the code includes the 4355debug output trace mechanism and has a much larger code and data size. Note 4356that these values will vary depending on the efficiency of the compiler and 4357the compiler options used during generation. 4358 4359 Previous Release: 4360 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 4361 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 4362 Current Release: 4363 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 4364 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 4365 4366 4367 43682) iASL Compiler/Disassembler: 4369 4370Allow the use of the ObjectType operator on uninitialized Locals and Args 4371(returns 0 as per the ACPI specification). 4372 4373Fixed a problem where the compiler would fault if there was a syntax error 4374in the FieldName of all of the various CreateXXXField operators. 4375 4376Disallow the use of lower case letters within the EISAID macro, as per the 4377ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where 4378U is an uppercase letter and N is a hex digit. 4379 4380 4381---------------------------------------- 438206 October 2004. Summary of changes for version 20041006: 4383 43841) ACPI CA Core Subsystem: 4385 4386Implemented support for the ACPI 3.0 Timer operator. This ASL function 4387implements a 64-bit timer with 100 nanosecond granularity. 4388 4389Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 4390implement the ACPI 3.0 Timer operator. This allows the host OS to implement 4391the timer with the best clock available. Also, it keeps the core subsystem 4392out of the clock handling business, since the host OS (usually) performs 4393this function. 4394 4395Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 4396functions use a 64-bit address which is part of the packed ACPI Generic 4397Address Structure. Since the structure is non-aligned, the alignment macros 4398are now used to extract the address to a local variable before use. 4399 4400Fixed a problem where the ToInteger operator assumed all input strings were 4401hexadecimal. The operator now handles both decimal strings and hex strings 4402(prefixed with "0x"). 4403 4404Fixed a problem where the string length in the string object created as a 4405result of the internal ConvertToString procedure could be incorrect. This 4406potentially affected all implicit conversions and also the ToDecimalString 4407and ToHexString operators. 4408 4409Fixed two problems in the ToString operator. If the length parameter was 4410zero, an incorrect string object was created and the value of the input 4411length parameter was inadvertently changed from zero to Ones. 4412 4413Fixed a problem where the optional ResourceSource string in the ExtendedIRQ 4414resource macro was ignored. 4415 4416Simplified the interfaces to the internal division functions, reducing code 4417size and complexity. 4418 4419Code and Data Size: Current and previous core subsystem library sizes are 4420shown below. These are the code and data sizes for the acpica.lib produced 4421by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4422any ACPI driver or OSPM code. The debug version of the code includes the 4423debug output trace mechanism and has a much larger code and data size. Note 4424that these values will vary depending on the efficiency of the compiler and 4425the compiler options used during generation. 4426 4427 Previous Release: 4428 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 4429 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 4430 Current Release: 4431 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 4432 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 4433 4434 44352) iASL Compiler/Disassembler: 4436 4437Implemented support for the ACPI 3.0 Timer operator. 4438 4439Fixed a problem where the Default() operator was inadvertently ignored in a 4440Switch/Case block. This was a problem in the translation of the Switch 4441statement to If...Else pairs. 4442 4443Added support to allow a standalone Return operator, with no parentheses (or 4444operands). 4445 4446Fixed a problem with code generation for the ElseIf operator where the 4447translated Else...If parse tree was improperly constructed leading to the 4448loss of some code. 4449 4450---------------------------------------- 445122 September 2004. Summary of changes for version 20040922: 4452 44531) ACPI CA Core Subsystem: 4454 4455Fixed a problem with the implementation of the LNot() operator where "Ones" 4456was not returned for the TRUE case. Changed the code to return Ones instead 4457of (!Arg) which was usually 1. This change affects iASL constant folding for 4458this operator also. 4459 4460Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not 4461initialized properly -- Now zero the entire buffer in this case where the 4462buffer already exists. 4463 4464Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 4465Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 4466related code considerably. This will require changes/updates to all OS 4467interface layers (OSLs.) 4468 4469Implemented a new external interface, AcpiInstallExceptionHandler, to allow 4470a system exception handler to be installed. This handler is invoked upon any 4471run-time exception that occurs during control method execution. 4472 4473Added support for the DSDT in AcpiTbFindTable. This allows the 4474DataTableRegion() operator to access the local copy of the DSDT. 4475 4476Code and Data Size: Current and previous core subsystem library sizes are 4477shown below. These are the code and data sizes for the acpica.lib produced 4478by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4479any ACPI driver or OSPM code. The debug version of the code includes the 4480debug output trace mechanism and has a much larger code and data size. Note 4481that these values will vary depending on the efficiency of the compiler and 4482the compiler options used during generation. 4483 4484 Previous Release: 4485 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 4486 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 4487 Current Release: 4488 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 4489 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 4490 4491 44922) iASL Compiler/Disassembler: 4493 4494Fixed a problem with constant folding and the LNot operator. LNot was 4495returning 1 in the TRUE case, not Ones as per the ACPI specification. This 4496could result in the generation of an incorrect folded/reduced constant. 4497 4498End-Of-File is now allowed within a "//"-style comment. A parse error no 4499longer occurs if such a comment is at the very end of the input ASL source 4500file. 4501 4502Implemented the "-r" option to override the Revision in the table header. 4503The initial use of this option will be to simplify the evaluation of the AML 4504interpreter by allowing a single ASL source module to be compiled for either 450532-bit or 64-bit integers. 4506 4507 4508---------------------------------------- 450927 August 2004. Summary of changes for version 20040827: 4510 45111) ACPI CA Core Subsystem: 4512 4513- Implemented support for implicit object conversion in the non-numeric 4514logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and 4515LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 4516the second operand is implicitly converted on the fly to match the type of 4517the first operand. For example: 4518 4519 LEqual (Source1, Source2) 4520 4521Source1 and Source2 must each evaluate to an integer, a string, or a buffer. 4522The data type of Source1 dictates the required type of Source2. Source2 is 4523implicitly converted if necessary to match the type of Source1. 4524 4525- Updated and corrected the behavior of the string conversion support. The 4526rules concerning conversion of buffers to strings (according to the ACPI 4527specification) are as follows: 4528 4529ToDecimalString - explicit byte-wise conversion of buffer to string of 4530decimal values (0-255) separated by commas. ToHexString - explicit byte-wise 4531conversion of buffer to string of hex values (0-FF) separated by commas. 4532ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte 4533copy with no transform except NULL terminated. Any other implicit buffer-to- 4534string conversion - byte-wise conversion of buffer to string of hex values 4535(0-FF) separated by spaces. 4536 4537- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 4538 4539- Fixed a problem in AcpiNsGetPathnameLength where the returned length was 4540one byte too short in the case of a node in the root scope. This could 4541cause a fault during debug output. 4542 4543- Code and Data Size: Current and previous core subsystem library sizes are 4544shown below. These are the code and data sizes for the acpica.lib produced 4545by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4546any ACPI driver or OSPM code. The debug version of the code includes the 4547debug output trace mechanism and has a much larger code and data size. Note 4548that these values will vary depending on the efficiency of the compiler and 4549the compiler options used during generation. 4550 4551 Previous Release: 4552 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 4553 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 4554 Current Release: 4555 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 4556 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 4557 4558 45592) iASL Compiler/Disassembler: 4560 4561- Fixed a Linux generation error. 4562 4563 4564---------------------------------------- 456516 August 2004. Summary of changes for version 20040816: 4566 45671) ACPI CA Core Subsystem: 4568 4569Designed and implemented support within the AML interpreter for the so- 4570called "implicit return". This support returns the result of the last ASL 4571operation within a control method, in the absence of an explicit Return() 4572operator. A few machines depend on this behavior, even though it is not 4573explicitly supported by the ASL language. It is optional support that can 4574be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 4575 4576Removed support for the PCI_Config address space from the internal low level 4577hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 4578support was not used internally, and would not work correctly anyway because 4579the PCI bus number and segment number were not supported. There are 4580separate interfaces for PCI configuration space access because of the unique 4581interface. 4582 4583Code and Data Size: Current and previous core subsystem library sizes are 4584shown below. These are the code and data sizes for the acpica.lib produced 4585by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4586any ACPI driver or OSPM code. The debug version of the code includes the 4587debug output trace mechanism and has a much larger code and data size. Note 4588that these values will vary depending on the efficiency of the compiler and 4589the compiler options used during generation. 4590 4591 Previous Release: 4592 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 4593 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 4594 Current Release: 4595 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 4596 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 4597 4598 45992) iASL Compiler/Disassembler: 4600 4601Fixed a problem where constants in ASL expressions at the root level (not 4602within a control method) could be inadvertently truncated during code 4603generation. This problem was introduced in the 20040715 release. 4604 4605 4606---------------------------------------- 460715 July 2004. Summary of changes for version 20040715: 4608 46091) ACPI CA Core Subsystem: 4610 4611Restructured the internal HW GPE interfaces to pass/track the current state 4612of interrupts (enabled/disabled) in order to avoid possible deadlock and 4613increase flexibility of the interfaces. 4614 4615Implemented a "lexicographical compare" for String and Buffer objects within 4616the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -- 4617as per further clarification to the ACPI specification. Behavior is similar 4618to C library "strcmp". 4619 4620Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 4621external function. In the 32-bit non-debug case, the stack use has been 4622reduced from 168 bytes to 32 bytes. 4623 4624Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack, 4625whose purpose is to allow the AML interpreter to forgive certain bad AML 4626constructs. Default setting is FALSE. 4627 4628Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO 4629support code. If enabled, it allows field access to go beyond the end of a 4630region definition if the field is within the region length rounded up to the 4631next access width boundary (a common coding error.) 4632 4633Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 4634ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these 4635symbols are lowercased by the latest version of the AcpiSrc tool. 4636 4637The prototypes for the PCI interfaces in acpiosxf.h have been updated to 4638rename "Register" to simply "Reg" to prevent certain compilers from 4639complaining. 4640 4641Code and Data Size: Current and previous core subsystem library sizes are 4642shown below. These are the code and data sizes for the acpica.lib produced 4643by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4644any ACPI driver or OSPM code. The debug version of the code includes the 4645debug output trace mechanism and has a much larger code and data size. Note 4646that these values will vary depending on the efficiency of the compiler and 4647the compiler options used during generation. 4648 4649 Previous Release: 4650 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 4651 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 4652 Current Release: 4653 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 4654 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 4655 4656 46572) iASL Compiler/Disassembler: 4658 4659Implemented full support for Package objects within the Case() operator. 4660Note: The Break() operator is currently not supported within Case blocks 4661(TermLists) as there is some question about backward compatibility with ACPI 46621.0 interpreters. 4663 4664 4665Fixed a problem where complex terms were not supported properly within the 4666Switch() operator. 4667 4668Eliminated extraneous warning for compiler-emitted reserved names of the 4669form "_T_x". (Used in Switch/Case operators.) 4670 4671Eliminated optimization messages for "_T_x" objects and small constants 4672within the DefinitionBlock operator. 4673 4674 4675---------------------------------------- 467615 June 2004. Summary of changes for version 20040615: 4677 46781) ACPI CA Core Subsystem: 4679 4680Implemented support for Buffer and String objects (as per ACPI 2.0) for the 4681following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 4682LLessEqual. 4683 4684All directory names in the entire source package are lower case, as they 4685were in earlier releases. 4686 4687Implemented "Disassemble" command in the AML debugger that will disassemble 4688a single control method. 4689 4690Code and Data Size: Current and previous core subsystem library sizes are 4691shown below. These are the code and data sizes for the acpica.lib produced 4692by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4693any ACPI driver or OSPM code. The debug version of the code includes the 4694debug output trace mechanism and has a much larger code and data size. Note 4695that these values will vary depending on the efficiency of the compiler and 4696the compiler options used during generation. 4697 4698 Previous Release: 4699 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 4700 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 4701 4702 Current Release: 4703 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 4704 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 4705 4706 47072) iASL Compiler/Disassembler: 4708 4709Implemented support for Buffer and String objects (as per ACPI 2.0) for the 4710following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 4711LLessEqual. 4712 4713All directory names in the entire source package are lower case, as they 4714were in earlier releases. 4715 4716Fixed a fault when using the -g or -d<nofilename> options if the FADT was 4717not found. 4718 4719Fixed an issue with the Windows version of the compiler where later versions 4720of Windows place the FADT in the registry under the name "FADT" and not 4721"FACP" as earlier versions did. This applies when using the -g or - 4722d<nofilename> options. The compiler now looks for both strings as 4723necessary. 4724 4725Fixed a problem with compiler namepath optimization where a namepath within 4726the Scope() operator could not be optimized if the namepath was a subpath of 4727the current scope path. 4728 4729---------------------------------------- 473027 May 2004. Summary of changes for version 20040527: 4731 47321) ACPI CA Core Subsystem: 4733 4734Completed a new design and implementation for EBDA (Extended BIOS Data Area) 4735support in the RSDP scan code. The original code improperly scanned for the 4736EBDA by simply scanning from memory location 0 to 0x400. The correct method 4737is to first obtain the EBDA pointer from within the BIOS data area, then 4738scan 1K of memory starting at the EBDA pointer. There appear to be few if 4739any machines that place the RSDP in the EBDA, however. 4740 4741Integrated a fix for a possible fault during evaluation of BufferField 4742arguments. Obsolete code that was causing the problem was removed. 4743 4744Found and fixed a problem in the Field Support Code where data could be 4745corrupted on a bit field read that starts on an aligned boundary but does 4746not end on an aligned boundary. Merged the read/write "datum length" 4747calculation code into a common procedure. 4748 4749Rolled in a couple of changes to the FreeBSD-specific header. 4750 4751 4752Code and Data Size: Current and previous core subsystem library sizes are 4753shown below. These are the code and data sizes for the acpica.lib produced 4754by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4755any ACPI driver or OSPM code. The debug version of the code includes the 4756debug output trace mechanism and has a much larger code and data size. Note 4757that these values will vary depending on the efficiency of the compiler and 4758the compiler options used during generation. 4759 4760 Previous Release: 4761 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 4762 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 4763 Current Release: 4764 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 4765 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 4766 4767 47682) iASL Compiler/Disassembler: 4769 4770Fixed a generation warning produced by some overly-verbose compilers for a 477164-bit constant. 4772 4773---------------------------------------- 477414 May 2004. Summary of changes for version 20040514: 4775 47761) ACPI CA Core Subsystem: 4777 4778Fixed a problem where hardware GPE enable bits sometimes not set properly 4779during and after GPE method execution. Result of 04/27 changes. 4780 4781Removed extra "clear all GPEs" when sleeping/waking. 4782 4783Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 4784AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to 4785the new AcpiEv* calls as appropriate. 4786 4787ACPI_OS_NAME was removed from the OS-specific headers. The default name is 4788now "Microsoft Windows NT" for maximum compatibility. However this can be 4789changed by modifying the acconfig.h file. 4790 4791Allow a single invocation of AcpiInstallNotifyHandler for a handler that 4792traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 4793 4794Run _INI methods on ThermalZone objects. This is against the ACPI 4795specification, but there is apparently ASL code in the field that has these 4796_INI methods, and apparently "other" AML interpreters execute them. 4797 4798Performed a full 16/32/64 bit lint that resulted in some small changes. 4799 4800Added a sleep simulation command to the AML debugger to test sleep code. 4801 4802Code and Data Size: Current and previous core subsystem library sizes are 4803shown below. These are the code and data sizes for the acpica.lib produced 4804by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4805any ACPI driver or OSPM code. The debug version of the code includes the 4806debug output trace mechanism and has a much larger code and data size. Note 4807that these values will vary depending on the efficiency of the compiler and 4808the compiler options used during generation. 4809 4810 Previous Release: 4811 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 4812 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 4813 Current Release: 4814 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 4815 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 4816 4817---------------------------------------- 481827 April 2004. Summary of changes for version 20040427: 4819 48201) ACPI CA Core Subsystem: 4821 4822Completed a major overhaul of the GPE handling within ACPI CA. There are 4823now three types of GPEs: wake-only, runtime-only, and combination wake/run. 4824The only GPEs allowed to be combination wake/run are for button-style 4825devices such as a control-method power button, control-method sleep button, 4826or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not 4827referenced by any _PRW methods are marked for "runtime" and hardware 4828enabled. Any GPE that is referenced by a _PRW method is marked for "wake" 4829(and disabled at runtime). However, at sleep time, only those GPEs that 4830have been specifically enabled for wake via the AcpiEnableGpe interface will 4831actually be hardware enabled. 4832 4833A new external interface has been added, AcpiSetGpeType(), that is meant to 4834be used by device drivers to force a GPE to a particular type. It will be 4835especially useful for the drivers for the button devices mentioned above. 4836 4837Completed restructuring of the ACPI CA initialization sequence so that 4838default operation region handlers are installed before GPEs are initialized 4839and the _PRW methods are executed. This will prevent errors when the _PRW 4840methods attempt to access system memory or I/O space. 4841 4842GPE enable/disable no longer reads the GPE enable register. We now keep the 4843enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 4844thus no longer depend on the hardware to maintain these bits. 4845 4846Always clear the wake status and fixed/GPE status bits before sleep, even 4847for state S5. 4848 4849Improved the AML debugger output for displaying the GPE blocks and their 4850current status. 4851 4852Added new strings for the _OSI method, of the form "Windows 2001 SPx" where 4853x = 0,1,2,3,4. 4854 4855Fixed a problem where the physical address was incorrectly calculated when 4856the Load() operator was used to directly load from an Operation Region (vs. 4857loading from a Field object.) Also added check for minimum table length for 4858this case. 4859 4860Fix for multiple mutex acquisition. Restore original thread SyncLevel on 4861mutex release. 4862 4863Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 4864consistency with the other fields returned. 4865 4866Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 4867structure for each GPE in the system, so the size of this structure is 4868important. 4869 4870CPU stack requirement reduction: Cleaned up the method execution and object 4871evaluation paths so that now a parameter structure is passed, instead of 4872copying the various method parameters over and over again. 4873 4874In evregion.c: Correctly exit and reenter the interpreter region if and 4875only if dispatching an operation region request to a user-installed handler. 4876Do not exit/reenter when dispatching to a default handler (e.g., default 4877system memory or I/O handlers) 4878 4879 4880Notes for updating drivers for the new GPE support. The following changes 4881must be made to ACPI-related device drivers that are attached to one or more 4882GPEs: (This information will be added to the ACPI CA Programmer Reference.) 4883 48841) AcpiInstallGpeHandler no longer automatically enables the GPE, you must 4885explicitly call AcpiEnableGpe. 48862) There is a new interface called AcpiSetGpeType. This should be called 4887before enabling the GPE. Also, this interface will automatically disable 4888the GPE if it is currently enabled. 48893) AcpiEnableGpe no longer supports a GPE type flag. 4890 4891Specific drivers that must be changed: 48921) EC driver: 4893 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 4894AeGpeHandler, NULL); 4895 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 4896 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 4897 48982) Button Drivers (Power, Lid, Sleep): 4899Run _PRW method under parent device 4900If _PRW exists: /* This is a control-method button */ 4901 Extract GPE number and possibly GpeDevice 4902 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 4903 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 4904 4905For all other devices that have _PRWs, we automatically set the GPE type to 4906ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This 4907must be done on a selective basis, usually requiring some kind of user app 4908to allow the user to pick the wake devices. 4909 4910 4911Code and Data Size: Current and previous core subsystem library sizes are 4912shown below. These are the code and data sizes for the acpica.lib produced 4913by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4914any ACPI driver or OSPM code. The debug version of the code includes the 4915debug output trace mechanism and has a much larger code and data size. Note 4916that these values will vary depending on the efficiency of the compiler and 4917the compiler options used during generation. 4918 4919 Previous Release: 4920 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 4921 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 4922 Current Release: 4923 4924 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 4925 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 4926 4927 4928 4929---------------------------------------- 493002 April 2004. Summary of changes for version 20040402: 4931 49321) ACPI CA Core Subsystem: 4933 4934Fixed an interpreter problem where an indirect store through an ArgX 4935parameter was incorrectly applying the "implicit conversion rules" during 4936the store. From the ACPI specification: "If the target is a method local or 4937argument (LocalX or ArgX), no conversion is performed and the result is 4938stored directly to the target". The new behavior is to disable implicit 4939conversion during ALL stores to an ArgX. 4940 4941Changed the behavior of the _PRW method scan to ignore any and all errors 4942returned by a given _PRW. This prevents the scan from aborting from the 4943failure of any single _PRW. 4944 4945Moved the runtime configuration parameters from the global init procedure to 4946static variables in acglobal.h. This will allow the host to override the 4947default values easily. 4948 4949Code and Data Size: Current and previous core subsystem library sizes are 4950shown below. These are the code and data sizes for the acpica.lib produced 4951by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4952any ACPI driver or OSPM code. The debug version of the code includes the 4953debug output trace mechanism and has a much larger code and data size. Note 4954that these values will vary depending on the efficiency of the compiler and 4955the compiler options used during generation. 4956 4957 Previous Release: 4958 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 4959 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 4960 Current Release: 4961 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 4962 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 4963 4964 49652) iASL Compiler/Disassembler: 4966 4967iASL now fully disassembles SSDTs. However, External() statements are not 4968generated automatically for unresolved symbols at this time. This is a 4969planned feature for future implementation. 4970 4971Fixed a scoping problem in the disassembler that occurs when the type of the 4972target of a Scope() operator is overridden. This problem caused an 4973incorrectly nested internal namespace to be constructed. 4974 4975Any warnings or errors that are emitted during disassembly are now commented 4976out automatically so that the resulting file can be recompiled without any 4977hand editing. 4978 4979---------------------------------------- 498026 March 2004. Summary of changes for version 20040326: 4981 49821) ACPI CA Core Subsystem: 4983 4984Implemented support for "wake" GPEs via interaction between GPEs and the 4985_PRW methods. Every GPE that is pointed to by one or more _PRWs is 4986identified as a WAKE GPE and by default will no longer be enabled at 4987runtime. Previously, we were blindly enabling all GPEs with a corresponding 4988_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We 4989believe this has been the cause of thousands of "spurious" GPEs on some 4990systems. 4991 4992This new GPE behavior is can be reverted to the original behavior (enable 4993ALL GPEs at runtime) via a runtime flag. 4994 4995Fixed a problem where aliased control methods could not access objects 4996properly. The proper scope within the namespace was not initialized 4997(transferred to the target of the aliased method) before executing the 4998target method. 4999 5000Fixed a potential race condition on internal object deletion on the return 5001object in AcpiEvaluateObject. 5002 5003Integrated a fix for resource descriptors where both _MEM and _MTP were 5004being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 5005wide, 0x0F instead of 0x03.) 5006 5007Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a 5008fault in some cases. 5009 5010Updated Notify() values for debug statements in evmisc.c 5011 5012Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 5013 5014Code and Data Size: Current and previous core subsystem library sizes are 5015shown below. These are the code and data sizes for the acpica.lib produced 5016by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5017any ACPI driver or OSPM code. The debug version of the code includes the 5018debug output trace mechanism and has a much larger code and data size. Note 5019that these values will vary depending on the efficiency of the compiler and 5020the compiler options used during generation. 5021 5022 Previous Release: 5023 5024 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 5025 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 5026 Current Release: 5027 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 5028 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 5029 5030---------------------------------------- 503111 March 2004. Summary of changes for version 20040311: 5032 50331) ACPI CA Core Subsystem: 5034 5035Fixed a problem where errors occurring during the parse phase of control 5036method execution did not abort cleanly. For example, objects created and 5037installed in the namespace were not deleted. This caused all subsequent 5038invocations of the method to return the AE_ALREADY_EXISTS exception. 5039 5040Implemented a mechanism to force a control method to "Serialized" execution 5041if the method attempts to create namespace objects. (The root of the 5042AE_ALREADY_EXISTS problem.) 5043 5044Implemented support for the predefined _OSI "internal" control method. 5045Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and 5046"Windows 2001.1", and can be easily upgraded for new strings as necessary. 5047This feature will allow "other" operating systems to execute the fully 5048tested, "Windows" code path through the ASL code 5049 5050Global Lock Support: Now allows multiple acquires and releases with any 5051internal thread. Removed concept of "owning thread" for this special mutex. 5052 5053Fixed two functions that were inappropriately declaring large objects on the 5054CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during 5055method execution considerably. 5056 5057Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 5058S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 5059 5060Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 5061defined on the machine. 5062 5063Implemented two runtime options: One to force all control method execution 5064to "Serialized" to mimic Windows behavior, another to disable _OSI support 5065if it causes problems on a given machine. 5066 5067Code and Data Size: Current and previous core subsystem library sizes are 5068shown below. These are the code and data sizes for the acpica.lib produced 5069by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5070any ACPI driver or OSPM code. The debug version of the code includes the 5071debug output trace mechanism and has a much larger code and data size. Note 5072that these values will vary depending on the efficiency of the compiler and 5073the compiler options used during generation. 5074 5075 Previous Release: 5076 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 5077 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 5078 Current Release: 5079 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 5080 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 5081 50822) iASL Compiler/Disassembler: 5083 5084Fixed an array size problem for FreeBSD that would cause the compiler to 5085fault. 5086 5087---------------------------------------- 508820 February 2004. Summary of changes for version 20040220: 5089 5090 50911) ACPI CA Core Subsystem: 5092 5093Implemented execution of _SxD methods for Device objects in the 5094GetObjectInfo interface. 5095 5096Fixed calls to _SST method to pass the correct arguments. 5097 5098Added a call to _SST on wake to restore to "working" state. 5099 5100Check for End-Of-Buffer failure case in the WalkResources interface. 5101 5102Integrated fix for 64-bit alignment issue in acglobal.h by moving two 5103structures to the beginning of the file. 5104 5105After wake, clear GPE status register(s) before enabling GPEs. 5106 5107After wake, clear/enable power button. (Perhaps we should clear/enable all 5108fixed events upon wake.) 5109 5110Fixed a couple of possible memory leaks in the Namespace manager. 5111 5112Integrated latest acnetbsd.h file. 5113 5114---------------------------------------- 511511 February 2004. Summary of changes for version 20040211: 5116 5117 51181) ACPI CA Core Subsystem: 5119 5120Completed investigation and implementation of the call-by-reference 5121mechanism for control method arguments. 5122 5123Fixed a problem where a store of an object into an indexed package could 5124fail if the store occurs within a different method than the method that 5125created the package. 5126 5127Fixed a problem where the ToDecimal operator could return incorrect results. 5128 5129Fixed a problem where the CopyObject operator could fail on some of the more 5130obscure objects (e.g., Reference objects.) 5131 5132Improved the output of the Debug object to display buffer, package, and 5133index objects. 5134 5135Fixed a problem where constructs of the form "RefOf (ArgX)" did not return 5136the expected result. 5137 5138Added permanent ACPI_REPORT_ERROR macros for all instances of the 5139ACPI_AML_INTERNAL exception. 5140 5141Integrated latest version of acfreebsd.h 5142 5143---------------------------------------- 514416 January 2004. Summary of changes for version 20040116: 5145 5146The purpose of this release is primarily to update the copyright years in 5147each module, thus causing a huge number of diffs. There are a few small 5148functional changes, however. 5149 51501) ACPI CA Core Subsystem: 5151 5152Improved error messages when there is a problem finding one or more of the 5153required base ACPI tables 5154 5155Reintroduced the definition of APIC_HEADER in actbl.h 5156 5157Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 5158 5159Removed extraneous reference to NewObj in dsmthdat.c 5160 51612) iASL compiler 5162 5163Fixed a problem introduced in December that disabled the correct disassembly 5164of Resource Templates 5165 5166 5167---------------------------------------- 516803 December 2003. Summary of changes for version 20031203: 5169 51701) ACPI CA Core Subsystem: 5171 5172Changed the initialization of Operation Regions during subsystem 5173init to perform two entire walks of the ACPI namespace; The first 5174to initialize the regions themselves, the second to execute the 5175_REG methods. This fixed some interdependencies across _REG 5176methods found on some machines. 5177 5178Fixed a problem where a Store(Local0, Local1) could simply update 5179the object reference count, and not create a new copy of the 5180object if the Local1 is uninitialized. 5181 5182Implemented support for the _SST reserved method during sleep 5183transitions. 5184 5185Implemented support to clear the SLP_TYP and SLP_EN bits when 5186waking up, this is apparently required by some machines. 5187 5188When sleeping, clear the wake status only if SleepState is not S5. 5189 5190Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 5191pointer arithmetic advanced a string pointer too far. 5192 5193Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 5194could be returned if the requested table has not been loaded. 5195 5196Within the support for IRQ resources, restructured the handling of 5197the active and edge/level bits. 5198 5199Fixed a few problems in AcpiPsxExecute() where memory could be 5200leaked under certain error conditions. 5201 5202Improved error messages for the cases where the ACPI mode could 5203not be entered. 5204 5205Code and Data Size: Current and previous core subsystem library 5206sizes are shown below. These are the code and data sizes for the 5207acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5208these values do not include any ACPI driver or OSPM code. The 5209debug version of the code includes the debug output trace 5210mechanism and has a much larger code and data size. Note that 5211these values will vary depending on the efficiency of the compiler 5212and the compiler options used during generation. 5213 5214 Previous Release (20031029): 5215 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 5216 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 5217 Current Release: 5218 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 5219 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 5220 52212) iASL Compiler/Disassembler: 5222 5223Implemented a fix for the iASL disassembler where a bad index was 5224generated. This was most noticeable on 64-bit platforms 5225 5226 5227---------------------------------------- 522829 October 2003. Summary of changes for version 20031029: 5229 52301) ACPI CA Core Subsystem: 5231 5232 5233Fixed a problem where a level-triggered GPE with an associated 5234_Lxx control method was incorrectly cleared twice. 5235 5236Fixed a problem with the Field support code where an access can 5237occur beyond the end-of-region if the field is non-aligned but 5238extends to the very end of the parent region (resulted in an 5239AE_AML_REGION_LIMIT exception.) 5240 5241Fixed a problem with ACPI Fixed Events where an RT Clock handler 5242would not get invoked on an RTC event. The RTC event bitmasks for 5243the PM1 registers were not being initialized properly. 5244 5245Implemented support for executing _STA and _INI methods for 5246Processor objects. Although this is currently not part of the 5247ACPI specification, there is existing ASL code that depends on the 5248init-time execution of these methods. 5249 5250Implemented and deployed a GetDescriptorName function to decode 5251the various types of internal descriptors. Guards against null 5252descriptors during debug output also. 5253 5254Implemented and deployed a GetNodeName function to extract the 4- 5255character namespace node name. This function simplifies the debug 5256and error output, as well as guarding against null pointers during 5257output. 5258 5259Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 5260simplify the debug and error output of 64-bit integers. This 5261macro replaces the HIDWORD and LODWORD macros for dumping these 5262integers. 5263 5264Updated the implementation of the Stall() operator to only call 5265AcpiOsStall(), and also return an error if the operand is larger 5266than 255. This preserves the required behavior of not 5267relinquishing the processor, as would happen if AcpiOsSleep() was 5268called for "long stalls". 5269 5270Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 5271initialized are now treated as NOOPs. 5272 5273Cleaned up a handful of warnings during 64-bit generation. 5274 5275Fixed a reported error where and incorrect GPE number was passed 5276to the GPE dispatch handler. This value is only used for error 5277output, however. Used this opportunity to clean up and streamline 5278the GPE dispatch code. 5279 5280Code and Data Size: Current and previous core subsystem library 5281sizes are shown below. These are the code and data sizes for the 5282acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5283these values do not include any ACPI driver or OSPM code. The 5284 5285debug version of the code includes the debug output trace 5286mechanism and has a much larger code and data size. Note that 5287these values will vary depending on the efficiency of the compiler 5288and the compiler options used during generation. 5289 5290 Previous Release (20031002): 5291 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 5292 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 5293 Current Release: 5294 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 5295 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 5296 5297 52982) iASL Compiler/Disassembler: 5299 5300Updated the iASL compiler to return an error if the operand to the 5301Stall() operator is larger than 255. 5302 5303 5304---------------------------------------- 530502 October 2003. Summary of changes for version 20031002: 5306 5307 53081) ACPI CA Core Subsystem: 5309 5310Fixed a problem with Index Fields where the index was not 5311incremented for fields that require multiple writes to the 5312index/data registers (Fields that are wider than the data 5313register.) 5314 5315Fixed a problem with all Field objects where a write could go 5316beyond the end-of-field if the field was larger than the access 5317granularity and therefore required multiple writes to complete the 5318request. An extra write beyond the end of the field could happen 5319inadvertently. 5320 5321Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 5322would incorrectly be returned if the width of the Data Register 5323was larger than the specified field access width. 5324 5325Completed fixes for LoadTable() and Unload() and verified their 5326operation. Implemented full support for the "DdbHandle" object 5327throughout the ACPI CA subsystem. 5328 5329Implemented full support for the MADT and ECDT tables in the ACPI 5330CA header files. Even though these tables are not directly 5331consumed by ACPI CA, the header definitions are useful for ACPI 5332device drivers. 5333 5334Integrated resource descriptor fixes posted to the Linux ACPI 5335list. This included checks for minimum descriptor length, and 5336support for trailing NULL strings within descriptors that have 5337optional string elements. 5338 5339Code and Data Size: Current and previous core subsystem library 5340sizes are shown below. These are the code and data sizes for the 5341acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5342these values do not include any ACPI driver or OSPM code. The 5343debug version of the code includes the debug output trace 5344mechanism and has a much larger code and data size. Note that 5345these values will vary depending on the efficiency of the compiler 5346and the compiler options used during generation. 5347 5348 Previous Release (20030918): 5349 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 5350 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 5351 Current Release: 5352 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 5353 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 5354 5355 53562) iASL Compiler: 5357 5358Implemented detection of non-ASCII characters within the input 5359source ASL file. This catches attempts to compile binary (AML) 5360files early in the compile, with an informative error message. 5361 5362Fixed a problem where the disassembler would fault if the output 5363filename could not be generated or if the output file could not be 5364opened. 5365 5366---------------------------------------- 536718 September 2003. Summary of changes for version 20030918: 5368 5369 53701) ACPI CA Core Subsystem: 5371 5372Found and fixed a longstanding problem with the late execution of 5373the various deferred AML opcodes (such as Operation Regions, 5374Buffer Fields, Buffers, and Packages). If the name string 5375specified for the name of the new object placed the object in a 5376scope other than the current scope, the initialization/execution 5377of the opcode failed. The solution to this problem was to 5378implement a mechanism where the late execution of such opcodes 5379does not attempt to lookup/create the name a second time in an 5380incorrect scope. This fixes the "region size computed 5381incorrectly" problem. 5382 5383Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 5384Global Lock AE_BAD_PARAMETER error. 5385 5386Fixed several 64-bit issues with prototypes, casting and data 5387types. 5388 5389Removed duplicate prototype from acdisasm.h 5390 5391Fixed an issue involving EC Operation Region Detach (Shaohua Li) 5392 5393Code and Data Size: Current and previous core subsystem library 5394sizes are shown below. These are the code and data sizes for the 5395acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5396these values do not include any ACPI driver or OSPM code. The 5397debug version of the code includes the debug output trace 5398mechanism and has a much larger code and data size. Note that 5399these values will vary depending on the efficiency of the compiler 5400and the compiler options used during generation. 5401 5402 Previous Release: 5403 5404 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 5405 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 5406 Current Release: 5407 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 5408 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 5409 5410 54112) Linux: 5412 5413Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 5414correct sleep time in seconds. 5415 5416---------------------------------------- 541714 July 2003. Summary of changes for version 20030619: 5418 54191) ACPI CA Core Subsystem: 5420 5421Parse SSDTs in order discovered, as opposed to reverse order 5422(Hrvoje Habjanic) 5423 5424Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 5425Klausner, 5426 Nate Lawson) 5427 5428 54292) Linux: 5430 5431Dynamically allocate SDT list (suggested by Andi Kleen) 5432 5433proc function return value cleanups (Andi Kleen) 5434 5435Correctly handle NMI watchdog during long stalls (Andrew Morton) 5436 5437Make it so acpismp=force works (reported by Andrew Morton) 5438 5439 5440---------------------------------------- 544119 June 2003. Summary of changes for version 20030619: 5442 54431) ACPI CA Core Subsystem: 5444 5445Fix To/FromBCD, eliminating the need for an arch-specific #define. 5446 5447Do not acquire a semaphore in the S5 shutdown path. 5448 5449Fix ex_digits_needed for 0. (Takayoshi Kochi) 5450 5451Fix sleep/stall code reversal. (Andi Kleen) 5452 5453Revert a change having to do with control method calling 5454semantics. 5455 54562) Linux: 5457 5458acpiphp update (Takayoshi Kochi) 5459 5460Export acpi_disabled for sonypi (Stelian Pop) 5461 5462Mention acpismp=force in config help 5463 5464Re-add acpitable.c and acpismp=force. This improves backwards 5465 5466compatibility and also cleans up the code to a significant degree. 5467 5468Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 5469 5470---------------------------------------- 547122 May 2003. Summary of changes for version 20030522: 5472 54731) ACPI CA Core Subsystem: 5474 5475Found and fixed a reported problem where an AE_NOT_FOUND error 5476occurred occasionally during _BST evaluation. This turned out to 5477be an Owner ID allocation issue where a called method did not get 5478a new ID assigned to it. Eventually, (after 64k calls), the Owner 5479ID UINT16 would wraparound so that the ID would be the same as the 5480caller's and the called method would delete the caller's 5481namespace. 5482 5483Implemented extended error reporting for control methods that are 5484aborted due to a run-time exception. Output includes the exact 5485AML instruction that caused the method abort, a dump of the method 5486locals and arguments at the time of the abort, and a trace of all 5487nested control method calls. 5488 5489Modified the interpreter to allow the creation of buffers of zero 5490length from the AML code. Implemented new code to ensure that no 5491attempt is made to actually allocate a memory buffer (of length 5492zero) - instead, a simple buffer object with a NULL buffer pointer 5493and length zero is created. A warning is no longer issued when 5494the AML attempts to create a zero-length buffer. 5495 5496Implemented a workaround for the "leading asterisk issue" in 5497_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 5498asterisk is automatically removed if present in any HID, UID, or 5499CID strings. The iASL compiler will still flag this asterisk as 5500an error, however. 5501 5502Implemented full support for _CID methods that return a package of 5503multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 5504now additionally returns a device _CID list if present. This 5505required a change to the external interface in order to pass an 5506ACPI_BUFFER object as a parameter since the _CID list is of 5507variable length. 5508 5509Fixed a problem with the new AE_SAME_HANDLER exception where 5510handler initialization code did not know about this exception. 5511 5512Code and Data Size: Current and previous core subsystem library 5513sizes are shown below. These are the code and data sizes for the 5514acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5515these values do not include any ACPI driver or OSPM code. The 5516debug version of the code includes the debug output trace 5517mechanism and has a much larger code and data size. Note that 5518these values will vary depending on the efficiency of the compiler 5519and the compiler options used during generation. 5520 5521 Previous Release (20030509): 5522 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 5523 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 5524 Current Release: 5525 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 5526 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 5527 5528 55292) Linux: 5530 5531Fixed a bug in which we would reinitialize the ACPI interrupt 5532after it was already working, thus disabling all ACPI and the IRQs 5533for any other device sharing the interrupt. (Thanks to Stian 5534Jordet) 5535 5536Toshiba driver update (John Belmonte) 5537 5538Return only 0 or 1 for our interrupt handler status (Andrew 5539Morton) 5540 5541 55423) iASL Compiler: 5543 5544Fixed a reported problem where multiple (nested) ElseIf() 5545statements were not handled correctly by the compiler, resulting 5546in incorrect warnings and incorrect AML code. This was a problem 5547in both the ASL parser and the code generator. 5548 5549 55504) Documentation: 5551 5552Added changes to existing interfaces, new exception codes, and new 5553text concerning reference count object management versus garbage 5554collection. 5555 5556---------------------------------------- 555709 May 2003. Summary of changes for version 20030509. 5558 5559 55601) ACPI CA Core Subsystem: 5561 5562Changed the subsystem initialization sequence to hold off 5563installation of address space handlers until the hardware has been 5564initialized and the system has entered ACPI mode. This is because 5565the installation of space handlers can cause _REG methods to be 5566run. Previously, the _REG methods could potentially be run before 5567ACPI mode was enabled. 5568 5569Fixed some memory leak issues related to address space handler and 5570notify handler installation. There were some problems with the 5571reference count mechanism caused by the fact that the handler 5572objects are shared across several namespace objects. 5573 5574Fixed a reported problem where reference counts within the 5575namespace were not properly updated when named objects created by 5576method execution were deleted. 5577 5578Fixed a reported problem where multiple SSDTs caused a deletion 5579issue during subsystem termination. Restructured the table data 5580structures to simplify the linked lists and the related code. 5581 5582Fixed a problem where the table ID associated with secondary 5583tables (SSDTs) was not being propagated into the namespace objects 5584created by those tables. This would only present a problem for 5585tables that are unloaded at run-time, however. 5586 5587Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 5588type as the length parameter (instead of UINT32). 5589 5590Solved a long-standing problem where an ALREADY_EXISTS error 5591appears on various systems. This problem could happen when there 5592are multiple PCI_Config operation regions under a single PCI root 5593bus. This doesn't happen very frequently, but there are some 5594systems that do this in the ASL. 5595 5596Fixed a reported problem where the internal DeleteNode function 5597was incorrectly handling the case where a namespace node was the 5598first in the parent's child list, and had additional peers (not 5599the only child, but first in the list of children.) 5600 5601Code and Data Size: Current core subsystem library sizes are shown 5602below. These are the code and data sizes for the acpica.lib 5603produced by the Microsoft Visual C++ 6.0 compiler, and these 5604values do not include any ACPI driver or OSPM code. The debug 5605version of the code includes the debug output trace mechanism and 5606has a much larger code and data size. Note that these values will 5607vary depending on the efficiency of the compiler and the compiler 5608options used during generation. 5609 5610 Previous Release 5611 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 5612 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 5613 Current Release: 5614 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 5615 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 5616 5617 56182) Linux: 5619 5620Allow ":" in OS override string (Ducrot Bruno) 5621 5622Kobject fix (Greg KH) 5623 5624 56253 iASL Compiler/Disassembler: 5626 5627Fixed a problem in the generation of the C source code files (AML 5628is emitted in C source statements for BIOS inclusion) where the 5629Ascii dump that appears within a C comment at the end of each line 5630could cause a compile time error if the AML sequence happens to 5631have an open comment or close comment sequence embedded. 5632 5633 5634---------------------------------------- 563524 April 2003. Summary of changes for version 20030424. 5636 5637 56381) ACPI CA Core Subsystem: 5639 5640Support for big-endian systems has been implemented. Most of the 5641support has been invisibly added behind big-endian versions of the 5642ACPI_MOVE_* macros. 5643 5644Fixed a problem in AcpiHwDisableGpeBlock() and 5645AcpiHwClearGpeBlock() where an incorrect offset was passed to the 5646low level hardware write routine. The offset parameter was 5647actually eliminated from the low level read/write routines because 5648they had become obsolete. 5649 5650Fixed a problem where a handler object was deleted twice during 5651the removal of a fixed event handler. 5652 5653 56542) Linux: 5655 5656A fix for SMP systems with link devices was contributed by 5657 5658Compaq's Dan Zink. 5659 5660(2.5) Return whether we handled the interrupt in our IRQ handler. 5661(Linux ISRs no longer return void, so we can propagate the handler 5662return value from the ACPI CA core back to the OS.) 5663 5664 5665 56663) Documentation: 5667 5668The ACPI CA Programmer Reference has been updated to reflect new 5669interfaces and changes to existing interfaces. 5670 5671---------------------------------------- 567228 March 2003. Summary of changes for version 20030328. 5673 56741) ACPI CA Core Subsystem: 5675 5676The GPE Block Device support has been completed. New interfaces 5677are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 5678interfaces (enable, disable, clear, getstatus) have been split 5679into separate interfaces for Fixed Events and General Purpose 5680Events (GPEs) in order to support GPE Block Devices properly. 5681 5682Fixed a problem where the error message "Failed to acquire 5683semaphore" would appear during operations on the embedded 5684controller (EC). 5685 5686Code and Data Size: Current core subsystem library sizes are shown 5687below. These are the code and data sizes for the acpica.lib 5688produced by the Microsoft Visual C++ 6.0 compiler, and these 5689values do not include any ACPI driver or OSPM code. The debug 5690version of the code includes the debug output trace mechanism and 5691has a much larger code and data size. Note that these values will 5692vary depending on the efficiency of the compiler and the compiler 5693options used during generation. 5694 5695 Previous Release 5696 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 5697 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 5698 Current Release: 5699 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 5700 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 5701 5702 5703---------------------------------------- 570428 February 2003. Summary of changes for version 20030228. 5705 5706 57071) ACPI CA Core Subsystem: 5708 5709The GPE handling and dispatch code has been completely overhauled 5710in preparation for support of GPE Block Devices (ID ACPI0006). 5711This affects internal data structures and code only; there should 5712be no differences visible externally. One new file has been 5713added, evgpeblk.c 5714 5715The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 5716fields that are used to determine the GPE block lengths. The 5717REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 5718structures are ignored. This is per the ACPI specification but it 5719isn't very clear. The full 256 Block 0/1 GPEs are now supported 5720(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 5721 5722In the SCI interrupt handler, removed the read of the PM1_CONTROL 5723register to look at the SCI_EN bit. On some machines, this read 5724causes an SMI event and greatly slows down SCI events. (This may 5725in fact be the cause of slow battery status response on some 5726systems.) 5727 5728Fixed a problem where a store of a NULL string to a package object 5729could cause the premature deletion of the object. This was seen 5730during execution of the battery _BIF method on some systems, 5731resulting in no battery data being returned. 5732 5733Added AcpiWalkResources interface to simplify parsing of resource 5734lists. 5735 5736Code and Data Size: Current core subsystem library sizes are shown 5737below. These are the code and data sizes for the acpica.lib 5738produced by the Microsoft Visual C++ 6.0 compiler, and these 5739values do not include any ACPI driver or OSPM code. The debug 5740version of the code includes the debug output trace mechanism and 5741has a much larger code and data size. Note that these values will 5742vary depending on the efficiency of the compiler and the compiler 5743options used during generation. 5744 5745 Previous Release 5746 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 5747 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 5748 Current Release: 5749 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 5750 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 5751 5752 57532) Linux 5754 5755S3 fixes (Ole Rohne) 5756 5757Update ACPI PHP driver with to use new acpi_walk_resource API 5758(Bjorn Helgaas) 5759 5760Add S4BIOS support (Pavel Machek) 5761 5762Map in entire table before performing checksum (John Stultz) 5763 5764Expand the mem= cmdline to allow the specification of reserved and 5765ACPI DATA blocks (Pavel Machek) 5766 5767Never use ACPI on VISWS 5768 5769Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 5770 5771Revert a change that allowed P_BLK lengths to be 4 or 5. This is 5772causing us to think that some systems support C2 when they really 5773don't. 5774 5775Do not count processor objects for non-present CPUs (Thanks to 5776Dominik Brodowski) 5777 5778 57793) iASL Compiler: 5780 5781Fixed a problem where ASL include files could not be found and 5782opened. 5783 5784Added support for the _PDC reserved name. 5785 5786 5787---------------------------------------- 578822 January 2003. Summary of changes for version 20030122. 5789 5790 57911) ACPI CA Core Subsystem: 5792 5793Added a check for constructs of the form: Store (Local0, Local0) 5794where Local0 is not initialized. Apparently, some BIOS 5795programmers believe that this is a NOOP. Since this store doesn't 5796do anything anyway, the new prototype behavior will ignore this 5797error. This is a case where we can relax the strict checking in 5798the interpreter in the name of compatibility. 5799 5800 58012) Linux 5802 5803The AcpiSrc Source Conversion Utility has been released with the 5804Linux package for the first time. This is the utility that is 5805used to convert the ACPI CA base source code to the Linux version. 5806 5807(Both) Handle P_BLK lengths shorter than 6 more gracefully 5808 5809(Both) Move more headers to include/acpi, and delete an unused 5810header. 5811 5812(Both) Move drivers/acpi/include directory to include/acpi 5813 5814(Both) Boot functions don't use cmdline, so don't pass it around 5815 5816(Both) Remove include of unused header (Adrian Bunk) 5817 5818(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 5819the 5820former now also includes the latter, acpiphp.h only needs the one, 5821now. 5822 5823(2.5) Make it possible to select method of bios restoring after S3 5824resume. [=> no more ugly ifdefs] (Pavel Machek) 5825 5826(2.5) Make proc write interfaces work (Pavel Machek) 5827 5828(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 5829 5830(2.5) Break out ACPI Perf code into its own module, under cpufreq 5831(Dominik Brodowski) 5832 5833(2.4) S4BIOS support (Ducrot Bruno) 5834 5835(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 5836Visinoni) 5837 5838 58393) iASL Compiler: 5840 5841Added support to disassemble SSDT and PSDTs. 5842 5843Implemented support to obtain SSDTs from the Windows registry if 5844available. 5845 5846 5847---------------------------------------- 584809 January 2003. Summary of changes for version 20030109. 5849 58501) ACPI CA Core Subsystem: 5851 5852Changed the behavior of the internal Buffer-to-String conversion 5853function. The current ACPI specification states that the contents 5854of the buffer are "converted to a string of two-character 5855hexadecimal numbers, each separated by a space". Unfortunately, 5856this definition is not backwards compatible with existing ACPI 1.0 5857implementations (although the behavior was not defined in the ACPI 58581.0 specification). The new behavior simply copies data from the 5859buffer to the string until a null character is found or the end of 5860the buffer is reached. The new String object is always null 5861terminated. This problem was seen during the generation of _BIF 5862battery data where incorrect strings were returned for battery 5863type, etc. This will also require an errata to the ACPI 5864specification. 5865 5866Renamed all instances of NATIVE_UINT and NATIVE_INT to 5867ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 5868 5869Copyright in all module headers (both Linux and non-Linux) has be 5870updated to 2003. 5871 5872Code and Data Size: Current core subsystem library sizes are shown 5873below. These are the code and data sizes for the acpica.lib 5874produced by the Microsoft Visual C++ 6.0 compiler, and these 5875values do not include any ACPI driver or OSPM code. The debug 5876version of the code includes the debug output trace mechanism and 5877has a much larger code and data size. Note that these values will 5878vary depending on the efficiency of the compiler and the compiler 5879options used during generation. 5880 5881 Previous Release 5882 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 5883 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 5884 Current Release: 5885 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 5886 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 5887 5888 58892) Linux 5890 5891Fixed an oops on module insertion/removal (Matthew Tippett) 5892 5893(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 5894 5895(2.5) Replace pr_debug (Randy Dunlap) 5896 5897(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 5898 5899(Both) Eliminate spawning of thread from timer callback, in favor 5900of schedule_work() 5901 5902(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 5903 5904(Both) Added define for Fixed Function HW region (Matthew Wilcox) 5905 5906(Both) Add missing statics to button.c (Pavel Machek) 5907 5908Several changes have been made to the source code translation 5909utility that generates the Linux Code in order to make the code 5910more "Linux-like": 5911 5912All typedefs on structs and unions have been removed in keeping 5913with the Linux coding style. 5914 5915Removed the non-Linux SourceSafe module revision number from each 5916module header. 5917 5918Completed major overhaul of symbols to be lowercased for linux. 5919Doubled the number of symbols that are lowercased. 5920 5921Fixed a problem where identifiers within procedure headers and 5922within quotes were not fully lower cased (they were left with a 5923starting capital.) 5924 5925Some C macros whose only purpose is to allow the generation of 16- 5926bit code are now completely removed in the Linux code, increasing 5927readability and maintainability. 5928 5929---------------------------------------- 5930 593112 December 2002. Summary of changes for version 20021212. 5932 5933 59341) ACPI CA Core Subsystem: 5935 5936Fixed a problem where the creation of a zero-length AML Buffer 5937would cause a fault. 5938 5939Fixed a problem where a Buffer object that pointed to a static AML 5940buffer (in an ACPI table) could inadvertently be deleted, causing 5941memory corruption. 5942 5943Fixed a problem where a user buffer (passed in to the external 5944ACPI CA interfaces) could be overwritten if the buffer was too 5945small to complete the operation, causing memory corruption. 5946 5947Fixed a problem in the Buffer-to-String conversion code where a 5948string of length one was always returned, regardless of the size 5949of the input Buffer object. 5950 5951Removed the NATIVE_CHAR data type across the entire source due to 5952lack of need and lack of consistent use. 5953 5954Code and Data Size: Current core subsystem library sizes are shown 5955below. These are the code and data sizes for the acpica.lib 5956produced by the Microsoft Visual C++ 6.0 compiler, and these 5957values do not include any ACPI driver or OSPM code. The debug 5958version of the code includes the debug output trace mechanism and 5959has a much larger code and data size. Note that these values will 5960vary depending on the efficiency of the compiler and the compiler 5961options used during generation. 5962 5963 Previous Release 5964 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 5965 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 5966 Current Release: 5967 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 5968 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 5969 5970 5971---------------------------------------- 597205 December 2002. Summary of changes for version 20021205. 5973 59741) ACPI CA Core Subsystem: 5975 5976Fixed a problem where a store to a String or Buffer object could 5977cause corruption of the DSDT if the object type being stored was 5978the same as the target object type and the length of the object 5979being stored was equal to or smaller than the original (existing) 5980target object. This was seen to cause corruption of battery _BIF 5981buffers if the _BIF method modified the buffer on the fly. 5982 5983Fixed a problem where an internal error was generated if a control 5984method invocation was used in an OperationRegion, Buffer, or 5985Package declaration. This was caused by the deferred parsing of 5986the control method and thus the deferred creation of the internal 5987method object. The solution to this problem was to create the 5988internal method object at the moment the method is encountered in 5989the first pass - so that subsequent references to the method will 5990able to obtain the required parameter count and thus properly 5991parse the method invocation. This problem presented itself as an 5992AE_AML_INTERNAL during the pass 1 parse phase during table load. 5993 5994Fixed a problem where the internal String object copy routine did 5995not always allocate sufficient memory for the target String object 5996and caused memory corruption. This problem was seen to cause 5997"Allocation already present in list!" errors as memory allocation 5998became corrupted. 5999 6000Implemented a new function for the evaluation of namespace objects 6001that allows the specification of the allowable return object 6002types. This simplifies a lot of code that checks for a return 6003object of one or more specific objects returned from the 6004evaluation (such as _STA, etc.) This may become and external 6005function if it would be useful to ACPI-related drivers. 6006 6007Completed another round of prefixing #defines with "ACPI_" for 6008clarity. 6009 6010Completed additional code restructuring to allow more modular 6011linking for iASL compiler and AcpiExec. Several files were split 6012creating new files. New files: nsparse.c dsinit.c evgpe.c 6013 6014Implemented an abort mechanism to terminate an executing control 6015method via the AML debugger. This feature is useful for debugging 6016control methods that depend (wait) for specific hardware 6017responses. 6018 6019Code and Data Size: Current core subsystem library sizes are shown 6020below. These are the code and data sizes for the acpica.lib 6021produced by the Microsoft Visual C++ 6.0 compiler, and these 6022values do not include any ACPI driver or OSPM code. The debug 6023version of the code includes the debug output trace mechanism and 6024has a much larger code and data size. Note that these values will 6025vary depending on the efficiency of the compiler and the compiler 6026options used during generation. 6027 6028 Previous Release 6029 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6030 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 6031 Current Release: 6032 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 6033 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 6034 6035 60362) iASL Compiler/Disassembler 6037 6038Fixed a compiler code generation problem for "Interrupt" Resource 6039Descriptors. If specified in the ASL, the optional "Resource 6040Source Index" and "Resource Source" fields were not inserted into 6041the correct location within the AML resource descriptor, creating 6042an invalid descriptor. 6043 6044Fixed a disassembler problem for "Interrupt" resource descriptors. 6045The optional "Resource Source Index" and "Resource Source" fields 6046were ignored. 6047 6048 6049---------------------------------------- 605022 November 2002. Summary of changes for version 20021122. 6051 6052 60531) ACPI CA Core Subsystem: 6054 6055Fixed a reported problem where an object stored to a Method Local 6056or Arg was not copied to a new object during the store - the 6057object pointer was simply copied to the Local/Arg. This caused 6058all subsequent operations on the Local/Arg to also affect the 6059original source of the store operation. 6060 6061Fixed a problem where a store operation to a Method Local or Arg 6062was not completed properly if the Local/Arg contained a reference 6063(from RefOf) to a named field. The general-purpose store-to- 6064namespace-node code is now used so that this case is handled 6065automatically. 6066 6067Fixed a problem where the internal object copy routine would cause 6068a protection fault if the object being copied was a Package and 6069contained either 1) a NULL package element or 2) a nested sub- 6070package. 6071 6072Fixed a problem with the GPE initialization that resulted from an 6073ambiguity in the ACPI specification. One section of the 6074specification states that both the address and length of the GPE 6075block must be zero if the block is not supported. Another section 6076implies that only the address need be zero if the block is not 6077supported. The code has been changed so that both the address and 6078the length must be non-zero to indicate a valid GPE block (i.e., 6079if either the address or the length is zero, the GPE block is 6080invalid.) 6081 6082Code and Data Size: Current core subsystem library sizes are shown 6083below. These are the code and data sizes for the acpica.lib 6084produced by the Microsoft Visual C++ 6.0 compiler, and these 6085values do not include any ACPI driver or OSPM code. The debug 6086version of the code includes the debug output trace mechanism and 6087has a much larger code and data size. Note that these values will 6088vary depending on the efficiency of the compiler and the compiler 6089options used during generation. 6090 6091 Previous Release 6092 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 6093 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 6094 Current Release: 6095 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6096 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 6097 6098 60992) Linux 6100 6101Cleaned up EC driver. Exported an external EC read/write 6102interface. By going through this, other drivers (most notably 6103sonypi) will be able to serialize access to the EC. 6104 6105 61063) iASL Compiler/Disassembler 6107 6108Implemented support to optionally generate include files for both 6109ASM and C (the -i switch). This simplifies BIOS development by 6110automatically creating include files that contain external 6111declarations for the symbols that are created within the 6112 6113(optionally generated) ASM and C AML source files. 6114 6115 6116---------------------------------------- 611715 November 2002. Summary of changes for version 20021115. 6118 61191) ACPI CA Core Subsystem: 6120 6121Fixed a memory leak problem where an error during resolution of 6122 6123method arguments during a method invocation from another method 6124failed to cleanup properly by deleting all successfully resolved 6125argument objects. 6126 6127Fixed a problem where the target of the Index() operator was not 6128correctly constructed if the source object was a package. This 6129problem has not been detected because the use of a target operand 6130with Index() is very rare. 6131 6132Fixed a problem with the Index() operator where an attempt was 6133made to delete the operand objects twice. 6134 6135Fixed a problem where an attempt was made to delete an operand 6136twice during execution of the CondRefOf() operator if the target 6137did not exist. 6138 6139Implemented the first of perhaps several internal create object 6140functions that create and initialize a specific object type. This 6141consolidates duplicated code wherever the object is created, thus 6142shrinking the size of the subsystem. 6143 6144Implemented improved debug/error messages for errors that occur 6145during nested method invocations. All executing method pathnames 6146are displayed (with the error) as the call stack is unwound - thus 6147simplifying debug. 6148 6149Fixed a problem introduced in the 10/02 release that caused 6150premature deletion of a buffer object if a buffer was used as an 6151ASL operand where an integer operand is required (Thus causing an 6152implicit object conversion from Buffer to Integer.) The change in 6153the 10/02 release was attempting to fix a memory leak (albeit 6154incorrectly.) 6155 6156Code and Data Size: Current core subsystem library sizes are shown 6157below. These are the code and data sizes for the acpica.lib 6158produced by the Microsoft Visual C++ 6.0 compiler, and these 6159values do not include any ACPI driver or OSPM code. The debug 6160version of the code includes the debug output trace mechanism and 6161has a much larger code and data size. Note that these values will 6162vary depending on the efficiency of the compiler and the compiler 6163options used during generation. 6164 6165 Previous Release 6166 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 6167 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 6168 Current Release: 6169 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 6170 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 6171 6172 61732) Linux 6174 6175Changed the implementation of the ACPI semaphores to use down() 6176instead of down_interruptable(). It is important that the 6177execution of ACPI control methods not be interrupted by signals. 6178Methods must run to completion, or the system may be left in an 6179unknown/unstable state. 6180 6181Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 6182(Shawn Starr) 6183 6184 61853) iASL Compiler/Disassembler 6186 6187 6188Changed the default location of output files. All output files 6189are now placed in the current directory by default instead of in 6190the directory of the source file. This change may affect some 6191existing makefiles, but it brings the behavior of the compiler in 6192line with other similar tools. The location of the output files 6193can be overridden with the -p command line switch. 6194 6195 6196---------------------------------------- 619711 November 2002. Summary of changes for version 20021111. 6198 6199 62000) ACPI Specification 2.0B is released and is now available at: 6201http://www.acpi.info/index.html 6202 6203 62041) ACPI CA Core Subsystem: 6205 6206Implemented support for the ACPI 2.0 SMBus Operation Regions. 6207This includes the early detection and handoff of the request to 6208the SMBus region handler (avoiding all of the complex field 6209support code), and support for the bidirectional return packet 6210from an SMBus write operation. This paves the way for the 6211development of SMBus drivers in each host operating system. 6212 6213Fixed a problem where the semaphore WAIT_FOREVER constant was 6214defined as 32 bits, but must be 16 bits according to the ACPI 6215specification. This had the side effect of causing ASL 6216Mutex/Event timeouts even though the ASL code requested a wait 6217forever. Changed all internal references to the ACPI timeout 6218parameter to 16 bits to prevent future problems. Changed the name 6219of WAIT_FOREVER to ACPI_WAIT_FOREVER. 6220 6221Code and Data Size: Current core subsystem library sizes are shown 6222below. These are the code and data sizes for the acpica.lib 6223produced by the Microsoft Visual C++ 6.0 compiler, and these 6224values do not include any ACPI driver or OSPM code. The debug 6225version of the code includes the debug output trace mechanism and 6226has a much larger code and data size. Note that these values will 6227vary depending on the efficiency of the compiler and the compiler 6228options used during generation. 6229 6230 Previous Release 6231 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6232 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 6233 Current Release: 6234 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 6235 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 6236 6237 62382) Linux 6239 6240Module loading/unloading fixes (John Cagle) 6241 6242 62433) iASL Compiler/Disassembler 6244 6245Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 6246 6247Implemented support for the disassembly of all SMBus protocol 6248keywords (SMBQuick, SMBWord, etc.) 6249 6250---------------------------------------- 625101 November 2002. Summary of changes for version 20021101. 6252 6253 62541) ACPI CA Core Subsystem: 6255 6256Fixed a problem where platforms that have a GPE1 block but no GPE0 6257block were not handled correctly. This resulted in a "GPE 6258overlap" error message. GPE0 is no longer required. 6259 6260Removed code added in the previous release that inserted nodes 6261into the namespace in alphabetical order. This caused some side- 6262effects on various machines. The root cause of the problem is 6263still under investigation since in theory, the internal ordering 6264of the namespace nodes should not matter. 6265 6266 6267Enhanced error reporting for the case where a named object is not 6268found during control method execution. The full ACPI namepath 6269(name reference) of the object that was not found is displayed in 6270this case. 6271 6272Note: as a result of the overhaul of the namespace object types in 6273the previous release, the namespace nodes for the predefined 6274scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 6275instead of ACPI_TYPE_ANY. This simplifies the namespace 6276management code but may affect code that walks the namespace tree 6277looking for specific object types. 6278 6279Code and Data Size: Current core subsystem library sizes are shown 6280below. These are the code and data sizes for the acpica.lib 6281produced by the Microsoft Visual C++ 6.0 compiler, and these 6282values do not include any ACPI driver or OSPM code. The debug 6283version of the code includes the debug output trace mechanism and 6284has a much larger code and data size. Note that these values will 6285vary depending on the efficiency of the compiler and the compiler 6286options used during generation. 6287 6288 Previous Release 6289 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 6290 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 6291 Current Release: 6292 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6293 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 6294 6295 62962) Linux 6297 6298Fixed a problem introduced in the previous release where the 6299Processor and Thermal objects were not recognized and installed in 6300/proc. This was related to the scope type change described above. 6301 6302 63033) iASL Compiler/Disassembler 6304 6305Implemented the -g option to get all of the required ACPI tables 6306from the registry and save them to files (Windows version of the 6307compiler only.) The required tables are the FADT, FACS, and DSDT. 6308 6309Added ACPI table checksum validation during table disassembly in 6310order to catch corrupted tables. 6311 6312 6313---------------------------------------- 631422 October 2002. Summary of changes for version 20021022. 6315 63161) ACPI CA Core Subsystem: 6317 6318Implemented a restriction on the Scope operator that the target 6319must already exist in the namespace at the time the operator is 6320encountered (during table load or method execution). In other 6321words, forward references are not allowed and Scope() cannot 6322create a new object. This changes the previous behavior where the 6323interpreter would create the name if not found. This new behavior 6324correctly enables the search-to-root algorithm during namespace 6325lookup of the target name. Because of this upsearch, this fixes 6326the known Compaq _SB_.OKEC problem and makes both the AML 6327interpreter and iASL compiler compatible with other ACPI 6328implementations. 6329 6330Completed a major overhaul of the internal ACPI object types for 6331the ACPI Namespace and the associated operand objects. Many of 6332these types had become obsolete with the introduction of the two- 6333pass namespace load. This cleanup simplifies the code and makes 6334the entire namespace load mechanism much clearer and easier to 6335understand. 6336 6337Improved debug output for tracking scope opening/closing to help 6338diagnose scoping issues. The old scope name as well as the new 6339scope name are displayed. Also improved error messages for 6340problems with ASL Mutex objects and error messages for GPE 6341problems. 6342 6343Cleaned up the namespace dump code, removed obsolete code. 6344 6345All string output (for all namespace/object dumps) now uses the 6346common ACPI string output procedure which handles escapes properly 6347and does not emit non-printable characters. 6348 6349Fixed some issues with constants in the 64-bit version of the 6350local C library (utclib.c) 6351 6352 63532) Linux 6354 6355EC Driver: No longer attempts to acquire the Global Lock at 6356interrupt level. 6357 6358 63593) iASL Compiler/Disassembler 6360 6361Implemented ACPI 2.0B grammar change that disallows all Type 1 and 63622 opcodes outside of a control method. This means that the 6363"executable" operators (versus the "namespace" operators) cannot 6364be used at the table level; they can only be used within a control 6365method. 6366 6367Implemented the restriction on the Scope() operator where the 6368target must already exist in the namespace at the time the 6369operator is encountered (during ASL compilation). In other words, 6370forward references are not allowed and Scope() cannot create a new 6371object. This makes the iASL compiler compatible with other ACPI 6372implementations and makes the Scope() implementation adhere to the 6373ACPI specification. 6374 6375Fixed a problem where namepath optimization for the Alias operator 6376was optimizing the wrong path (of the two namepaths.) This caused 6377a "Missing alias link" error message. 6378 6379Fixed a problem where an "unknown reserved name" warning could be 6380incorrectly generated for names like "_SB" when the trailing 6381underscore is not used in the original ASL. 6382 6383Fixed a problem where the reserved name check did not handle 6384NamePaths with multiple NameSegs correctly. The first nameseg of 6385the NamePath was examined instead of the last NameSeg. 6386 6387 6388---------------------------------------- 6389 639002 October 2002. Summary of changes for this release. 6391 6392 63931) ACPI CA Core Subsystem version 20021002: 6394 6395Fixed a problem where a store/copy of a string to an existing 6396string did not always set the string length properly in the String 6397object. 6398 6399Fixed a reported problem with the ToString operator where the 6400behavior was identical to the ToHexString operator instead of just 6401simply converting a raw buffer to a string data type. 6402 6403Fixed a problem where CopyObject and the other "explicit" 6404conversion operators were not updating the internal namespace node 6405type as part of the store operation. 6406 6407Fixed a memory leak during implicit source operand conversion 6408where the original object was not deleted if it was converted to a 6409new object of a different type. 6410 6411Enhanced error messages for all problems associated with namespace 6412lookups. Common procedure generates and prints the lookup name as 6413well as the formatted status. 6414 6415Completed implementation of a new design for the Alias support 6416within the namespace. The existing design did not handle the case 6417where a new object was assigned to one of the two names due to the 6418use of an explicit conversion operator, resulting in the two names 6419pointing to two different objects. The new design simply points 6420the Alias name to the original name node - not to the object. 6421This results in a level of indirection that must be handled in the 6422name resolution mechanism. 6423 6424Code and Data Size: Current core subsystem library sizes are shown 6425below. These are the code and data sizes for the acpica.lib 6426produced by the Microsoft Visual C++ 6.0 compiler, and these 6427values do not include any ACPI driver or OSPM code. The debug 6428version of the code includes the debug output trace mechanism and 6429has a larger code and data size. Note that these values will vary 6430depending on the efficiency of the compiler and the compiler 6431options used during generation. 6432 6433 Previous Release 6434 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 6435 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 6436 Current Release: 6437 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 6438 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 6439 6440 64412) Linux 6442 6443Initialize thermal driver's timer before it is used. (Knut 6444Neumann) 6445 6446Allow handling negative celsius values. (Kochi Takayoshi) 6447 6448Fix thermal management and make trip points. R/W (Pavel Machek) 6449 6450Fix /proc/acpi/sleep. (P. Christeas) 6451 6452IA64 fixes. (David Mosberger) 6453 6454Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 6455 6456Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 6457Brodowski) 6458 6459 64603) iASL Compiler/Disassembler 6461 6462Clarified some warning/error messages. 6463 6464 6465---------------------------------------- 646618 September 2002. Summary of changes for this release. 6467 6468 64691) ACPI CA Core Subsystem version 20020918: 6470 6471Fixed a reported problem with reference chaining (via the Index() 6472and RefOf() operators) in the ObjectType() and SizeOf() operators. 6473The definition of these operators includes the dereferencing of 6474all chained references to return information on the base object. 6475 6476Fixed a problem with stores to indexed package elements - the 6477existing code would not complete the store if an "implicit 6478conversion" was not performed. In other words, if the existing 6479object (package element) was to be replaced completely, the code 6480didn't handle this case. 6481 6482Relaxed typechecking on the ASL "Scope" operator to allow the 6483target name to refer to an object of type Integer, String, or 6484Buffer, in addition to the scoping object types (Device, 6485predefined Scopes, Processor, PowerResource, and ThermalZone.) 6486This allows existing AML code that has workarounds for a bug in 6487Windows to function properly. A warning is issued, however. This 6488affects both the AML interpreter and the iASL compiler. Below is 6489an example of this type of ASL code: 6490 6491 Name(DEB,0x00) 6492 Scope(DEB) 6493 { 6494 6495Fixed some reported problems with 64-bit integer support in the 6496local implementation of C library functions (clib.c) 6497 6498 64992) Linux 6500 6501Use ACPI fix map region instead of IOAPIC region, since it is 6502undefined in non-SMP. 6503 6504Ensure that the SCI has the proper polarity and trigger, even on 6505systems that do not have an interrupt override entry in the MADT. 6506 65072.5 big driver reorganization (Pat Mochel) 6508 6509Use early table mapping code from acpitable.c (Andi Kleen) 6510 6511New blacklist entries (Andi Kleen) 6512 6513Blacklist improvements. Split blacklist code out into a separate 6514file. Move checking the blacklist to very early. Previously, we 6515would use ACPI tables, and then halfway through init, check the 6516blacklist -- too late. Now, it's early enough to completely fall- 6517back to non-ACPI. 6518 6519 65203) iASL Compiler/Disassembler version 20020918: 6521 6522Fixed a problem where the typechecking code didn't know that an 6523alias could point to a method. In other words, aliases were not 6524being dereferenced during typechecking. 6525 6526 6527---------------------------------------- 652829 August 2002. Summary of changes for this release. 6529 65301) ACPI CA Core Subsystem Version 20020829: 6531 6532If the target of a Scope() operator already exists, it must be an 6533object type that actually opens a scope -- such as a Device, 6534Method, Scope, etc. This is a fatal runtime error. Similar error 6535check has been added to the iASL compiler also. 6536 6537Tightened up the namespace load to disallow multiple names in the 6538same scope. This previously was allowed if both objects were of 6539the same type. (i.e., a lookup was the same as entering a new 6540name). 6541 6542 65432) Linux 6544 6545Ensure that the ACPI interrupt has the proper trigger and 6546polarity. 6547 6548local_irq_disable is extraneous. (Matthew Wilcox) 6549 6550Make "acpi=off" actually do what it says, and not use the ACPI 6551interpreter *or* the tables. 6552 6553Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 6554Takayoshi) 6555 6556 65573) iASL Compiler/Disassembler Version 20020829: 6558 6559Implemented namepath optimization for name declarations. For 6560example, a declaration like "Method (\_SB_.ABCD)" would get 6561optimized to "Method (ABCD)" if the declaration is within the 6562\_SB_ scope. This optimization is in addition to the named 6563reference path optimization first released in the previous 6564version. This would seem to complete all possible optimizations 6565for namepaths within the ASL/AML. 6566 6567If the target of a Scope() operator already exists, it must be an 6568object type that actually opens a scope -- such as a Device, 6569Method, Scope, etc. 6570 6571Implemented a check and warning for unreachable code in the same 6572block below a Return() statement. 6573 6574Fixed a problem where the listing file was not generated if the 6575compiler aborted if the maximum error count was exceeded (200). 6576 6577Fixed a problem where the typechecking of method return values was 6578broken. This includes the check for a return value when the 6579method is invoked as a TermArg (a return value is expected.) 6580 6581Fixed a reported problem where EOF conditions during a quoted 6582string or comment caused a fault. 6583 6584 6585---------------------------------------- 658615 August 2002. Summary of changes for this release. 6587 65881) ACPI CA Core Subsystem Version 20020815: 6589 6590Fixed a reported problem where a Store to a method argument that 6591contains a reference did not perform the indirect store correctly. 6592This problem was created during the conversion to the new 6593reference object model - the indirect store to a method argument 6594code was not updated to reflect the new model. 6595 6596Reworked the ACPI mode change code to better conform to ACPI 2.0, 6597handle corner cases, and improve code legibility (Kochi Takayoshi) 6598 6599Fixed a problem with the pathname parsing for the carat (^) 6600prefix. The heavy use of the carat operator by the new namepath 6601optimization in the iASL compiler uncovered a problem with the AML 6602interpreter handling of this prefix. In the case where one or 6603more carats precede a single nameseg, the nameseg was treated as 6604standalone and the search rule (to root) was inadvertently 6605applied. This could cause both the iASL compiler and the 6606interpreter to find the wrong object or to miss the error that 6607should occur if the object does not exist at that exact pathname. 6608 6609Found and fixed the problem where the HP Pavilion DSDT would not 6610load. This was a relatively minor tweak to the table loading code 6611(a problem caused by the unexpected encounter with a method 6612invocation not within a control method), but it does not solve the 6613overall issue of the execution of AML code at the table level. 6614This investigation is still ongoing. 6615 6616Code and Data Size: Current core subsystem library sizes are shown 6617below. These are the code and data sizes for the acpica.lib 6618produced by the Microsoft Visual C++ 6.0 compiler, and these 6619values do not include any ACPI driver or OSPM code. The debug 6620version of the code includes the debug output trace mechanism and 6621has a larger code and data size. Note that these values will vary 6622depending on the efficiency of the compiler and the compiler 6623options used during generation. 6624 6625 Previous Release 6626 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 6627 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 6628 Current Release: 6629 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 6630 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 6631 6632 66332) Linux 6634 6635Remove redundant slab.h include (Brad Hards) 6636 6637Fix several bugs in thermal.c (Herbert Nachtnebel) 6638 6639Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 6640 6641Change acpi_system_suspend to use updated irq functions (Pavel 6642Machek) 6643 6644Export acpi_get_firmware_table (Matthew Wilcox) 6645 6646Use proper root proc entry for ACPI (Kochi Takayoshi) 6647 6648Fix early-boot table parsing (Bjorn Helgaas) 6649 6650 66513) iASL Compiler/Disassembler 6652 6653Reworked the compiler options to make them more consistent and to 6654use two-letter options where appropriate. We were running out of 6655sensible letters. This may break some makefiles, so check the 6656current options list by invoking the compiler with no parameters. 6657 6658Completed the design and implementation of the ASL namepath 6659optimization option for the compiler. This option optimizes all 6660references to named objects to the shortest possible path. The 6661first attempt tries to utilize a single nameseg (4 characters) and 6662the "search-to-root" algorithm used by the interpreter. If that 6663cannot be used (because either the name is not in the search path 6664or there is a conflict with another object with the same name), 6665the pathname is optimized using the carat prefix (usually a 6666shorter string than specifying the entire path from the root.) 6667 6668Implemented support to obtain the DSDT from the Windows registry 6669(when the disassembly option is specified with no input file). 6670Added this code as the implementation for AcpiOsTableOverride in 6671the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 6672utility) to scan memory for the DSDT to the AcpiOsTableOverride 6673function in the DOS OSL to make the disassembler truly OS 6674independent. 6675 6676Implemented a new option to disassemble and compile in one step. 6677When used without an input filename, this option will grab the 6678DSDT from the local machine, disassemble it, and compile it in one 6679step. 6680 6681Added a warning message for invalid escapes (a backslash followed 6682by any character other than the allowable escapes). This catches 6683the quoted string error "\_SB_" (which should be "\\_SB_" ). 6684 6685Also, there are numerous instances in the ACPI specification where 6686this error occurs. 6687 6688Added a compiler option to disable all optimizations. This is 6689basically the "compatibility mode" because by using this option, 6690the AML code will come out exactly the same as other ASL 6691compilers. 6692 6693Added error messages for incorrectly ordered dependent resource 6694functions. This includes: missing EndDependentFn macro at end of 6695dependent resource list, nested dependent function macros (both 6696start and end), and missing StartDependentFn macro. These are 6697common errors that should be caught at compile time. 6698 6699Implemented _OSI support for the disassembler and compiler. _OSI 6700must be included in the namespace for proper disassembly (because 6701the disassembler must know the number of arguments.) 6702 6703Added an "optimization" message type that is optional (off by 6704default). This message is used for all optimizations - including 6705constant folding, integer optimization, and namepath optimization. 6706 6707---------------------------------------- 670825 July 2002. Summary of changes for this release. 6709 6710 67111) ACPI CA Core Subsystem Version 20020725: 6712 6713The AML Disassembler has been enhanced to produce compilable ASL 6714code and has been integrated into the iASL compiler (see below) as 6715well as the single-step disassembly for the AML debugger and the 6716disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 6717resource templates and macros are fully supported. The 6718disassembler has been tested on over 30 different AML files, 6719producing identical AML when the resulting disassembled ASL file 6720is recompiled with the same ASL compiler. 6721 6722Modified the Resource Manager to allow zero interrupts and zero 6723dma channels during the GetCurrentResources call. This was 6724causing problems on some platforms. 6725 6726Added the AcpiOsRedirectOutput interface to the OSL to simplify 6727output redirection for the AcpiOsPrintf and AcpiOsVprintf 6728interfaces. 6729 6730Code and Data Size: Current core subsystem library sizes are shown 6731below. These are the code and data sizes for the acpica.lib 6732produced by the Microsoft Visual C++ 6.0 compiler, and these 6733values do not include any ACPI driver or OSPM code. The debug 6734version of the code includes the debug output trace mechanism and 6735has a larger code and data size. Note that these values will vary 6736depending on the efficiency of the compiler and the compiler 6737options used during generation. 6738 6739 Previous Release 6740 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 6741 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 6742 Current Release: 6743 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 6744 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 6745 6746 67472) Linux 6748 6749Fixed a panic in the EC driver (Dominik Brodowski) 6750 6751Implemented checksum of the R/XSDT itself during Linux table scan 6752(Richard Schaal) 6753 6754 67553) iASL compiler 6756 6757The AML disassembler is integrated into the compiler. The "-d" 6758option invokes the disassembler to completely disassemble an 6759input AML file, producing as output a text ASL file with the 6760extension ".dsl" (to avoid name collisions with existing .asl 6761source files.) A future enhancement will allow the disassembler 6762to obtain the BIOS DSDT from the registry under Windows. 6763 6764Fixed a problem with the VendorShort and VendorLong resource 6765descriptors where an invalid AML sequence was created. 6766 6767Implemented a fix for BufferData term in the ASL parser. It was 6768inadvertently defined twice, allowing invalid syntax to pass and 6769causing reduction conflicts. 6770 6771Fixed a problem where the Ones opcode could get converted to a 6772value of zero if "Ones" was used where a byte, word or dword value 6773was expected. The 64-bit value is now truncated to the correct 6774size with the correct value. 6775 6776 6777 6778---------------------------------------- 677902 July 2002. Summary of changes for this release. 6780 6781 67821) ACPI CA Core Subsystem Version 20020702: 6783 6784The Table Manager code has been restructured to add several new 6785features. Tables that are not required by the core subsystem 6786(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 6787validated in any way and are returned from AcpiGetFirmwareTable if 6788requested. The AcpiOsTableOverride interface is now called for 6789each table that is loaded by the subsystem in order to allow the 6790host to override any table it chooses. Previously, only the DSDT 6791could be overridden. Added one new files, tbrsdt.c and 6792tbgetall.c. 6793 6794Fixed a problem with the conversion of internal package objects to 6795external objects (when a package is returned from a control 6796method.) The return buffer length was set to zero instead of the 6797proper length of the package object. 6798 6799Fixed a reported problem with the use of the RefOf and DeRefOf 6800operators when passing reference arguments to control methods. A 6801new type of Reference object is used internally for references 6802produced by the RefOf operator. 6803 6804Added additional error messages in the Resource Manager to explain 6805AE_BAD_DATA errors when they occur during resource parsing. 6806 6807Split the AcpiEnableSubsystem into two primitives to enable a 6808finer granularity initialization sequence. These two calls should 6809be called in this order: AcpiEnableSubsystem (flags), 6810AcpiInitializeObjects (flags). The flags parameter remains the 6811same. 6812 6813 68142) Linux 6815 6816Updated the ACPI utilities module to understand the new style of 6817fully resolved package objects that are now returned from the core 6818subsystem. This eliminates errors of the form: 6819 6820 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 6821 acpi_utils-0430 [145] acpi_evaluate_reference: 6822 Invalid element in package (not a device reference) 6823 6824The method evaluation utility uses the new buffer allocation 6825scheme instead of calling AcpiEvaluate Object twice. 6826 6827Added support for ECDT. This allows the use of the Embedded 6828 6829Controller before the namespace has been fully initialized, which 6830is necessary for ACPI 2.0 support, and for some laptops to 6831initialize properly. (Laptops using ECDT are still rare, so only 6832limited testing was performed of the added functionality.) 6833 6834Fixed memory leaks in the EC driver. 6835 6836Eliminated a brittle code structure in acpi_bus_init(). 6837 6838Eliminated the acpi_evaluate() helper function in utils.c. It is 6839no longer needed since acpi_evaluate_object can optionally 6840allocate memory for the return object. 6841 6842Implemented fix for keyboard hang when getting battery readings on 6843some systems (Stephen White) 6844 6845PCI IRQ routing update (Dominik Brodowski) 6846 6847Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 6848support 6849 6850---------------------------------------- 685111 June 2002. Summary of changes for this release. 6852 6853 68541) ACPI CA Core Subsystem Version 20020611: 6855 6856Fixed a reported problem where constants such as Zero and One 6857appearing within _PRT packages were not handled correctly within 6858the resource manager code. Originally reported against the ASL 6859compiler because the code generator now optimizes integers to 6860their minimal AML representation (i.e. AML constants if possible.) 6861The _PRT code now handles all AML constant opcodes correctly 6862(Zero, One, Ones, Revision). 6863 6864Fixed a problem with the Concatenate operator in the AML 6865interpreter where a buffer result object was incorrectly marked as 6866not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 6867 6868All package sub-objects are now fully resolved before they are 6869returned from the external ACPI interfaces. This means that name 6870strings are resolved to object handles, and constant operators 6871(Zero, One, Ones, Revision) are resolved to Integers. 6872 6873Implemented immediate resolution of the AML Constant opcodes 6874(Zero, One, Ones, Revision) to Integer objects upon detection 6875within the AML stream. This has simplified and reduced the 6876generated code size of the subsystem by eliminating about 10 6877switch statements for these constants (which previously were 6878contained in Reference objects.) The complicating issues are that 6879the Zero opcode is used as a "placeholder" for unspecified 6880optional target operands and stores to constants are defined to be 6881no-ops. 6882 6883Code and Data Size: Current core subsystem library sizes are shown 6884below. These are the code and data sizes for the acpica.lib 6885produced by the Microsoft Visual C++ 6.0 compiler, and these 6886values do not include any ACPI driver or OSPM code. The debug 6887version of the code includes the debug output trace mechanism and 6888has a larger code and data size. Note that these values will vary 6889depending on the efficiency of the compiler and the compiler 6890options used during generation. 6891 6892 Previous Release 6893 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 6894 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 6895 Current Release: 6896 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 6897 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 6898 6899 69002) Linux 6901 6902 6903Added preliminary support for obtaining _TRA data for PCI root 6904bridges (Bjorn Helgaas). 6905 6906 69073) iASL Compiler Version X2046: 6908 6909Fixed a problem where the "_DDN" reserved name was defined to be a 6910control method with one argument. There are no arguments, and 6911_DDN does not have to be a control method. 6912 6913Fixed a problem with the Linux version of the compiler where the 6914source lines printed with error messages were the wrong lines. 6915This turned out to be the "LF versus CR/LF" difference between 6916Windows and Unix. This appears to be the longstanding issue 6917concerning listing output and error messages. 6918 6919Fixed a problem with the Linux version of compiler where opcode 6920names within error messages were wrong. This was caused by a 6921slight difference in the output of the Flex tool on Linux versus 6922Windows. 6923 6924Fixed a problem with the Linux compiler where the hex output files 6925contained some garbage data caused by an internal buffer overrun. 6926 6927 6928---------------------------------------- 692917 May 2002. Summary of changes for this release. 6930 6931 69321) ACPI CA Core Subsystem Version 20020517: 6933 6934Implemented a workaround to an BIOS bug discovered on the HP 6935OmniBook where the FADT revision number and the table size are 6936inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 6937behavior is to fallback to using only the ACPI 1.0 fields of the 6938FADT if the table is too small to be a ACPI 2.0 table as claimed 6939by the revision number. Although this is a BIOS bug, this is a 6940case where the workaround is simple enough and with no side 6941effects, so it seemed prudent to add it. A warning message is 6942issued, however. 6943 6944Implemented minimum size checks for the fixed-length ACPI tables - 6945- the FADT and FACS, as well as consistency checks between the 6946revision number and the table size. 6947 6948Fixed a reported problem in the table override support where the 6949new table pointer was incorrectly treated as a physical address 6950instead of a logical address. 6951 6952Eliminated the use of the AE_AML_ERROR exception and replaced it 6953with more descriptive codes. 6954 6955Fixed a problem where an exception would occur if an ASL Field was 6956defined with no named Field Units underneath it (used by some 6957index fields). 6958 6959Code and Data Size: Current core subsystem library sizes are shown 6960below. These are the code and data sizes for the acpica.lib 6961produced by the Microsoft Visual C++ 6.0 compiler, and these 6962values do not include any ACPI driver or OSPM code. The debug 6963version of the code includes the debug output trace mechanism and 6964has a larger code and data size. Note that these values will vary 6965depending on the efficiency of the compiler and the compiler 6966options used during generation. 6967 6968 Previous Release 6969 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 6970 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 6971 Current Release: 6972 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 6973 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 6974 6975 6976 69772) Linux 6978 6979Much work done on ACPI init (MADT and PCI IRQ routing support). 6980(Paul D. and Dominik Brodowski) 6981 6982Fix PCI IRQ-related panic on boot (Sam Revitch) 6983 6984Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 6985 6986Fix "MHz" typo (Dominik Brodowski) 6987 6988Fix RTC year 2000 issue (Dominik Brodowski) 6989 6990Preclude multiple button proc entries (Eric Brunet) 6991 6992Moved arch-specific code out of include/platform/aclinux.h 6993 69943) iASL Compiler Version X2044: 6995 6996Implemented error checking for the string used in the EISAID macro 6997(Usually used in the definition of the _HID object.) The code now 6998strictly enforces the PnP format - exactly 7 characters, 3 6999uppercase letters and 4 hex digits. 7000 7001If a raw string is used in the definition of the _HID object 7002(instead of the EISAID macro), the string must contain all 7003alphanumeric characters (e.g., "*PNP0011" is not allowed because 7004of the asterisk.) 7005 7006Implemented checking for invalid use of ACPI reserved names for 7007most of the name creation operators (Name, Device, Event, Mutex, 7008OperationRegion, PowerResource, Processor, and ThermalZone.) 7009Previously, this check was only performed for control methods. 7010 7011Implemented an additional check on the Name operator to emit an 7012error if a reserved name that must be implemented in ASL as a 7013control method is used. We know that a reserved name must be a 7014method if it is defined with input arguments. 7015 7016The warning emitted when a namespace object reference is not found 7017during the cross reference phase has been changed into an error. 7018The "External" directive should be used for names defined in other 7019modules. 7020 7021 70224) Tools and Utilities 7023 7024The 16-bit tools (adump16 and aexec16) have been regenerated and 7025tested. 7026 7027Fixed a problem with the output of both acpidump and adump16 where 7028the indentation of closing parentheses and brackets was not 7029 7030aligned properly with the parent block. 7031 7032 7033---------------------------------------- 703403 May 2002. Summary of changes for this release. 7035 7036 70371) ACPI CA Core Subsystem Version 20020503: 7038 7039Added support a new OSL interface that allows the host operating 7040 7041system software to override the DSDT found in the firmware - 7042AcpiOsTableOverride. With this interface, the OSL can examine the 7043version of the firmware DSDT and replace it with a different one 7044if desired. 7045 7046Added new external interfaces for accessing ACPI registers from 7047device drivers and other system software - AcpiGetRegister and 7048AcpiSetRegister. This was simply an externalization of the 7049existing AcpiHwBitRegister interfaces. 7050 7051Fixed a regression introduced in the previous build where the 7052ASL/AML CreateField operator always returned an error, 7053"destination must be a NS Node". 7054 7055Extended the maximum time (before failure) to successfully enable 7056ACPI mode to 3 seconds. 7057 7058Code and Data Size: Current core subsystem library sizes are shown 7059below. These are the code and data sizes for the acpica.lib 7060produced by the Microsoft Visual C++ 6.0 compiler, and these 7061values do not include any ACPI driver or OSPM code. The debug 7062version of the code includes the debug output trace mechanism and 7063has a larger code and data size. Note that these values will vary 7064depending on the efficiency of the compiler and the compiler 7065options used during generation. 7066 7067 Previous Release 7068 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 7069 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 7070 Current Release: 7071 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 7072 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 7073 7074 70752) Linux 7076 7077Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 7078free. While 3 out of 4 of our in-house systems work fine, the last 7079one still hangs when testing the LAPIC timer. 7080 7081Renamed many files in 2.5 kernel release to omit "acpi_" from the 7082name. 7083 7084Added warning on boot for Presario 711FR. 7085 7086Sleep improvements (Pavel Machek) 7087 7088ACPI can now be built without CONFIG_PCI enabled. 7089 7090IA64: Fixed memory map functions (JI Lee) 7091 7092 70933) iASL Compiler Version X2043: 7094 7095Added support to allow the compiler to be integrated into the MS 7096VC++ development environment for one-button compilation of single 7097files or entire projects -- with error-to-source-line mapping. 7098 7099Implemented support for compile-time constant folding for the 7100Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 7101specification. This allows the ASL writer to use expressions 7102instead of Integer/Buffer/String constants in terms that must 7103evaluate to constants at compile time and will also simplify the 7104emitted AML in any such sub-expressions that can be folded 7105(evaluated at compile-time.) This increases the size of the 7106compiler significantly because a portion of the ACPI CA AML 7107interpreter is included within the compiler in order to pre- 7108evaluate constant expressions. 7109 7110 7111Fixed a problem with the "Unicode" ASL macro that caused the 7112compiler to fault. (This macro is used in conjunction with the 7113_STR reserved name.) 7114 7115Implemented an AML opcode optimization to use the Zero, One, and 7116Ones opcodes where possible to further reduce the size of integer 7117constants and thus reduce the overall size of the generated AML 7118code. 7119 7120Implemented error checking for new reserved terms for ACPI version 71212.0A. 7122 7123Implemented the -qr option to display the current list of ACPI 7124reserved names known to the compiler. 7125 7126Implemented the -qc option to display the current list of ASL 7127operators that are allowed within constant expressions and can 7128therefore be folded at compile time if the operands are constants. 7129 7130 71314) Documentation 7132 7133Updated the Programmer's Reference for new interfaces, data types, 7134and memory allocation model options. 7135 7136Updated the iASL Compiler User Reference to apply new format and 7137add information about new features and options. 7138 7139---------------------------------------- 714019 April 2002. Summary of changes for this release. 7141 71421) ACPI CA Core Subsystem Version 20020419: 7143 7144The source code base for the Core Subsystem has been completely 7145cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 7146versions. The Lint option files used are included in the 7147/acpi/generate/lint directory. 7148 7149Implemented enhanced status/error checking across the entire 7150Hardware manager subsystem. Any hardware errors (reported from 7151the OSL) are now bubbled up and will abort a running control 7152method. 7153 7154 7155Fixed a problem where the per-ACPI-table integer width (32 or 64) 7156was stored only with control method nodes, causing a fault when 7157non-control method code was executed during table loading. The 7158solution implemented uses a global variable to indicate table 7159width across the entire ACPI subsystem. Therefore, ACPI CA does 7160not support mixed integer widths across different ACPI tables 7161(DSDT, SSDT). 7162 7163Fixed a problem where NULL extended fields (X fields) in an ACPI 71642.0 ACPI FADT caused the table load to fail. Although the 7165existing ACPI specification is a bit fuzzy on this topic, the new 7166behavior is to fall back on a ACPI 1.0 field if the corresponding 7167ACPI 2.0 X field is zero (even though the table revision indicates 7168a full ACPI 2.0 table.) The ACPI specification will be updated to 7169clarify this issue. 7170 7171Fixed a problem with the SystemMemory operation region handler 7172where memory was always accessed byte-wise even if the AML- 7173specified access width was larger than a byte. This caused 7174problems on systems with memory-mapped I/O. Memory is now 7175accessed with the width specified. On systems that do not support 7176non-aligned transfers, a check is made to guarantee proper address 7177alignment before proceeding in order to avoid an AML-caused 7178alignment fault within the kernel. 7179 7180 7181Fixed a problem with the ExtendedIrq resource where only one byte 7182of the 4-byte Irq field was extracted. 7183 7184Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 7185function was out of date and required a rewrite. 7186 7187Code and Data Size: Current core subsystem library sizes are shown 7188below. These are the code and data sizes for the acpica.lib 7189produced by the Microsoft Visual C++ 6.0 compiler, and these 7190values do not include any ACPI driver or OSPM code. The debug 7191version of the code includes the debug output trace mechanism and 7192has a larger code and data size. Note that these values will vary 7193depending on the efficiency of the compiler and the compiler 7194options used during generation. 7195 7196 Previous Release 7197 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 7198 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 7199 Current Release: 7200 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 7201 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 7202 7203 72042) Linux 7205 7206PCI IRQ routing fixes (Dominik Brodowski) 7207 7208 72093) iASL Compiler Version X2042: 7210 7211Implemented an additional compile-time error check for a field 7212unit whose size + minimum access width would cause a run-time 7213access beyond the end-of-region. Previously, only the field size 7214itself was checked. 7215 7216The Core subsystem and iASL compiler now share a common parse 7217object in preparation for compile-time evaluation of the type 72183/4/5 ASL operators. 7219 7220 7221---------------------------------------- 7222Summary of changes for this release: 03_29_02 7223 72241) ACPI CA Core Subsystem Version 20020329: 7225 7226Implemented support for late evaluation of TermArg operands to 7227Buffer and Package objects. This allows complex expressions to be 7228used in the declarations of these object types. 7229 7230Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 72311.0, if the field was larger than 32 bits, it was returned as a 7232buffer - otherwise it was returned as an integer. In ACPI 2.0, 7233the field is returned as a buffer only if the field is larger than 723464 bits. The TableRevision is now considered when making this 7235conversion to avoid incompatibility with existing ASL code. 7236 7237Implemented logical addressing for AcpiOsGetRootPointer. This 7238allows an RSDP with either a logical or physical address. With 7239this support, the host OS can now override all ACPI tables with 7240one logical RSDP. Includes implementation of "typed" pointer 7241support to allow a common data type for both physical and logical 7242pointers internally. This required a change to the 7243AcpiOsGetRootPointer interface. 7244 7245Implemented the use of ACPI 2.0 Generic Address Structures for all 7246GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 7247mapped I/O for these ACPI features. 7248 7249Initialization now ignores not only non-required tables (All 7250tables other than the FADT, FACS, DSDT, and SSDTs), but also does 7251not validate the table headers of unrecognized tables. 7252 7253Fixed a problem where a notify handler could only be 7254installed/removed on an object of type Device. All "notify" 7255 7256objects are now supported -- Devices, Processor, Power, and 7257Thermal. 7258 7259Removed most verbosity from the ACPI_DB_INFO debug level. Only 7260critical information is returned when this debug level is enabled. 7261 7262Code and Data Size: Current core subsystem library sizes are shown 7263below. These are the code and data sizes for the acpica.lib 7264produced by the Microsoft Visual C++ 6.0 compiler, and these 7265values do not include any ACPI driver or OSPM code. The debug 7266version of the code includes the debug output trace mechanism and 7267has a larger code and data size. Note that these values will vary 7268depending on the efficiency of the compiler and the compiler 7269options used during generation. 7270 7271 Previous Release 7272 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 7273 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 7274 Current Release: 7275 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 7276 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 7277 7278 72792) Linux: 7280 7281The processor driver (acpi_processor.c) now fully supports ACPI 72822.0-based processor performance control (e.g. Intel(R) 7283SpeedStep(TM) technology) Note that older laptops that only have 7284the Intel "applet" interface are not supported through this. The 7285'limit' and 'performance' interface (/proc) are fully functional. 7286[Note that basic policy for controlling performance state 7287transitions will be included in the next version of ospmd.] The 7288idle handler was modified to more aggressively use C2, and PIIX4 7289errata handling underwent a complete overhaul (big thanks to 7290Dominik Brodowski). 7291 7292Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 7293based devices in the ACPI namespace are now dynamically bound 7294(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 7295This allows, among other things, ACPI to resolve bus numbers for 7296subordinate PCI bridges. 7297 7298Enhanced PCI IRQ routing to get the proper bus number for _PRT 7299entries defined underneath PCI bridges. 7300 7301Added IBM 600E to bad bios list due to invalid _ADR value for 7302PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 7303 7304In the process of adding full MADT support (e.g. IOAPIC) for IA32 7305(acpi.c, mpparse.c) -- stay tuned. 7306 7307Added back visual differentiation between fixed-feature and 7308control-method buttons in dmesg. Buttons are also subtyped (e.g. 7309button/power/PWRF) to simplify button identification. 7310 7311We no longer use -Wno-unused when compiling debug. Please ignore 7312any "_THIS_MODULE defined but not used" messages. 7313 7314Can now shut down the system using "magic sysrq" key. 7315 7316 73173) iASL Compiler version 2041: 7318 7319Fixed a problem where conversion errors for hex/octal/decimal 7320constants were not reported. 7321 7322Implemented a fix for the General Register template Address field. 7323This field was 8 bits when it should be 64. 7324 7325Fixed a problem where errors/warnings were no longer being emitted 7326within the listing output file. 7327 7328Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 7329exactly 4 characters, alphanumeric only. 7330 7331 7332 7333 7334---------------------------------------- 7335Summary of changes for this release: 03_08_02 7336 7337 73381) ACPI CA Core Subsystem Version 20020308: 7339 7340Fixed a problem with AML Fields where the use of the "AccessAny" 7341keyword could cause an interpreter error due to attempting to read 7342or write beyond the end of the parent Operation Region. 7343 7344Fixed a problem in the SystemMemory Operation Region handler where 7345an attempt was made to map memory beyond the end of the region. 7346This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 7347errors on some Linux systems. 7348 7349Fixed a problem where the interpreter/namespace "search to root" 7350algorithm was not functioning for some object types. Relaxed the 7351internal restriction on the search to allow upsearches for all 7352external object types as well as most internal types. 7353 7354 73552) Linux: 7356 7357We now use safe_halt() macro versus individual calls to sti | hlt. 7358 7359Writing to the processor limit interface should now work. "echo 1" 7360will increase the limit, 2 will decrease, and 0 will reset to the 7361 7362default. 7363 7364 73653) ASL compiler: 7366 7367Fixed segfault on Linux version. 7368 7369 7370---------------------------------------- 7371Summary of changes for this release: 02_25_02 7372 73731) ACPI CA Core Subsystem: 7374 7375 7376Fixed a problem where the GPE bit masks were not initialized 7377properly, causing erratic GPE behavior. 7378 7379Implemented limited support for multiple calling conventions. The 7380code can be generated with either the VPL (variable parameter 7381list, or "C") convention, or the FPL (fixed parameter list, or 7382"Pascal") convention. The core subsystem is about 3.4% smaller 7383when generated with FPL. 7384 7385 73862) Linux 7387 7388Re-add some /proc/acpi/event functionality that was lost during 7389the rewrite 7390 7391Resolved issue with /proc events for fixed-feature buttons showing 7392up as the system device. 7393 7394Fixed checks on C2/C3 latencies to be inclusive of maximum values. 7395 7396Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 7397 7398Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 7399 7400Fixed limit interface & usage to fix bugs with passive cooling 7401hysterisis. 7402 7403Restructured PRT support. 7404 7405 7406---------------------------------------- 7407Summary of changes for this label: 02_14_02 7408 7409 74101) ACPI CA Core Subsystem: 7411 7412Implemented support in AcpiLoadTable to allow loading of FACS and 7413FADT tables. 7414 7415Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 7416been removed. All 64-bit platforms should be migrated to the ACPI 74172.0 tables. The actbl71.h header has been removed from the source 7418tree. 7419 7420All C macros defined within the subsystem have been prefixed with 7421"ACPI_" to avoid collision with other system include files. 7422 7423Removed the return value for the two AcpiOsPrint interfaces, since 7424it is never used and causes lint warnings for ignoring the return 7425value. 7426 7427Added error checking to all internal mutex acquire and release 7428calls. Although a failure from one of these interfaces is 7429probably a fatal system error, these checks will cause the 7430immediate abort of the currently executing method or interface. 7431 7432Fixed a problem where the AcpiSetCurrentResources interface could 7433fault. This was a side effect of the deployment of the new memory 7434allocation model. 7435 7436Fixed a couple of problems with the Global Lock support introduced 7437in the last major build. The "common" (1.0/2.0) internal FACS was 7438being overwritten with the FACS signature and clobbering the 7439Global Lock pointer. Also, the actual firmware FACS was being 7440unmapped after construction of the "common" FACS, preventing 7441access to the actual Global Lock field within it. The "common" 7442internal FACS is no longer installed as an actual ACPI table; it 7443is used simply as a global. 7444 7445Code and Data Size: Current core subsystem library sizes are shown 7446below. These are the code and data sizes for the acpica.lib 7447produced by the Microsoft Visual C++ 6.0 compiler, and these 7448values do not include any ACPI driver or OSPM code. The debug 7449version of the code includes the debug output trace mechanism and 7450has a larger code and data size. Note that these values will vary 7451depending on the efficiency of the compiler and the compiler 7452options used during generation. 7453 7454 Previous Release (02_07_01) 7455 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 7456 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 7457 Current Release: 7458 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 7459 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 7460 7461 74622) Linux 7463 7464Updated Linux-specific code for core macro and OSL interface 7465changes described above. 7466 7467Improved /proc/acpi/event. It now can be opened only once and has 7468proper poll functionality. 7469 7470Fixed and restructured power management (acpi_bus). 7471 7472Only create /proc "view by type" when devices of that class exist. 7473 7474Fixed "charging/discharging" bug (and others) in acpi_battery. 7475 7476Improved thermal zone code. 7477 7478 74793) ASL Compiler, version X2039: 7480 7481 7482Implemented the new compiler restriction on ASL String hex/octal 7483escapes to non-null, ASCII values. An error results if an invalid 7484value is used. (This will require an ACPI 2.0 specification 7485change.) 7486 7487AML object labels that are output to the optional C and ASM source 7488are now prefixed with both the ACPI table signature and table ID 7489to help guarantee uniqueness within a large BIOS project. 7490 7491 7492---------------------------------------- 7493Summary of changes for this label: 02_01_02 7494 74951) ACPI CA Core Subsystem: 7496 7497ACPI 2.0 support is complete in the entire Core Subsystem and the 7498ASL compiler. All new ACPI 2.0 operators are implemented and all 7499other changes for ACPI 2.0 support are complete. With 7500simultaneous code and data optimizations throughout the subsystem, 7501ACPI 2.0 support has been implemented with almost no additional 7502cost in terms of code and data size. 7503 7504Implemented a new mechanism for allocation of return buffers. If 7505the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 7506be allocated on behalf of the caller. Consolidated all return 7507buffer validation and allocation to a common procedure. Return 7508buffers will be allocated via the primary OSL allocation interface 7509since it appears that a separate pool is not needed by most users. 7510If a separate pool is required for these buffers, the caller can 7511still use the original mechanism and pre-allocate the buffer(s). 7512 7513Implemented support for string operands within the DerefOf 7514operator. 7515 7516Restructured the Hardware and Event managers to be table driven, 7517simplifying the source code and reducing the amount of generated 7518code. 7519 7520Split the common read/write low-level ACPI register bitfield 7521procedure into a separate read and write, simplifying the code 7522considerably. 7523 7524Obsoleted the AcpiOsCallocate OSL interface. This interface was 7525used only a handful of times and didn't have enough critical mass 7526for a separate interface. Replaced with a common calloc procedure 7527in the core. 7528 7529Fixed a reported problem with the GPE number mapping mechanism 7530that allows GPE1 numbers to be non-contiguous with GPE0. 7531Reorganized the GPE information and shrunk a large array that was 7532originally large enough to hold info for all possible GPEs (256) 7533to simply large enough to hold all GPEs up to the largest GPE 7534number on the machine. 7535 7536Fixed a reported problem with resource structure alignment on 64- 7537bit platforms. 7538 7539Changed the AcpiEnableEvent and AcpiDisableEvent external 7540interfaces to not require any flags for the common case of 7541enabling/disabling a GPE. 7542 7543Implemented support to allow a "Notify" on a Processor object. 7544 7545Most TBDs in comments within the source code have been resolved 7546and eliminated. 7547 7548 7549Fixed a problem in the interpreter where a standalone parent 7550prefix (^) was not handled correctly in the interpreter and 7551debugger. 7552 7553Removed obsolete and unnecessary GPE save/restore code. 7554 7555Implemented Field support in the ASL Load operator. This allows a 7556table to be loaded from a named field, in addition to loading a 7557table directly from an Operation Region. 7558 7559Implemented timeout and handle support in the external Global Lock 7560interfaces. 7561 7562Fixed a problem in the AcpiDump utility where pathnames were no 7563longer being generated correctly during the dump of named objects. 7564 7565Modified the AML debugger to give a full display of if/while 7566predicates instead of just one AML opcode at a time. (The 7567predicate can have several nested ASL statements.) The old method 7568was confusing during single stepping. 7569 7570Code and Data Size: Current core subsystem library sizes are shown 7571below. These are the code and data sizes for the acpica.lib 7572produced by the Microsoft Visual C++ 6.0 compiler, and these 7573values do not include any ACPI driver or OSPM code. The debug 7574version of the code includes the debug output trace mechanism and 7575has a larger code and data size. Note that these values will vary 7576depending on the efficiency of the compiler and the compiler 7577options used during generation. 7578 7579 Previous Release (12_18_01) 7580 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 7581 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 7582 Current Release: 7583 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 7584 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 7585 75862) Linux 7587 7588 Implemented fix for PIIX reverse throttling errata (Processor 7589driver) 7590 7591Added new Limit interface (Processor and Thermal drivers) 7592 7593New thermal policy (Thermal driver) 7594 7595Many updates to /proc 7596 7597Battery "low" event support (Battery driver) 7598 7599Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 7600 7601IA32 - IA64 initialization unification, no longer experimental 7602 7603Menuconfig options redesigned 7604 76053) ASL Compiler, version X2037: 7606 7607Implemented several new output features to simplify integration of 7608AML code into firmware: 1) Output the AML in C source code with 7609labels for each named ASL object. The original ASL source code 7610is interleaved as C comments. 2) Output the AML in ASM source code 7611with labels and interleaved ASL source. 3) Output the AML in 7612raw hex table form, in either C or ASM. 7613 7614Implemented support for optional string parameters to the 7615LoadTable operator. 7616 7617Completed support for embedded escape sequences within string 7618literals. The compiler now supports all single character escapes 7619as well as the Octal and Hex escapes. Note: the insertion of a 7620null byte into a string literal (via the hex/octal escape) causes 7621the string to be immediately terminated. A warning is issued. 7622 7623Fixed a problem where incorrect AML was generated for the case 7624where an ASL namepath consists of a single parent prefix ( 7625 7626) with no trailing name segments. 7627 7628The compiler has been successfully generated with a 64-bit C 7629compiler. 7630 7631 7632 7633 7634---------------------------------------- 7635Summary of changes for this label: 12_18_01 7636 76371) Linux 7638 7639Enhanced blacklist with reason and severity fields. Any table's 7640signature may now be used to identify a blacklisted system. 7641 7642Call _PIC control method to inform the firmware which interrupt 7643model the OS is using. Turn on any disabled link devices. 7644 7645Cleaned up busmgr /proc error handling (Andreas Dilger) 7646 7647 2) ACPI CA Core Subsystem: 7648 7649Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 7650while loop) 7651 7652Completed implementation of the ACPI 2.0 "Continue", 7653"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 7654operators. All new ACPI 2.0 operators are now implemented in both 7655the ASL compiler and the AML interpreter. The only remaining ACPI 76562.0 task is support for the String data type in the DerefOf 7657operator. Fixed a problem with AcquireMutex where the status code 7658was lost if the caller had to actually wait for the mutex. 7659 7660Increased the maximum ASL Field size from 64K bits to 4G bits. 7661 7662Completed implementation of the external Global Lock interfaces -- 7663AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 7664Handler parameters were added. 7665 7666Completed another pass at removing warnings and issues when 7667compiling with 64-bit compilers. The code now compiles cleanly 7668with the Intel 64-bit C/C++ compiler. Most notably, the pointer 7669add and subtract (diff) macros have changed considerably. 7670 7671 7672Created and deployed a new ACPI_SIZE type that is 64-bits wide on 767364-bit platforms, 32-bits on all others. This type is used 7674wherever memory allocation and/or the C sizeof() operator is used, 7675and affects the OSL memory allocation interfaces AcpiOsAllocate 7676and AcpiOsCallocate. 7677 7678Implemented sticky user breakpoints in the AML debugger. 7679 7680Code and Data Size: Current core subsystem library sizes are shown 7681below. These are the code and data sizes for the acpica.lib 7682produced by the Microsoft Visual C++ 6.0 compiler, and these 7683values do not include any ACPI driver or OSPM code. The debug 7684version of the code includes the debug output trace mechanism and 7685has a larger code and data size. Note that these values will vary 7686depending on the efficiency of the compiler and the compiler 7687options used during generation. 7688 7689 Previous Release (12_05_01) 7690 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 7691 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 7692 Current Release: 7693 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 7694 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 7695 7696 3) ASL Compiler, version X2034: 7697 7698Now checks for (and generates an error if detected) the use of a 7699Break or Continue statement without an enclosing While statement. 7700 7701 7702Successfully generated the compiler with the Intel 64-bit C 7703compiler. 7704 7705 ---------------------------------------- 7706Summary of changes for this label: 12_05_01 7707 7708 1) ACPI CA Core Subsystem: 7709 7710The ACPI 2.0 CopyObject operator is fully implemented. This 7711operator creates a new copy of an object (and is also used to 7712bypass the "implicit conversion" mechanism of the Store operator.) 7713 7714The ACPI 2.0 semantics for the SizeOf operator are fully 7715implemented. The change is that performing a SizeOf on a 7716reference object causes an automatic dereference of the object to 7717tha actual value before the size is evaluated. This behavior was 7718undefined in ACPI 1.0. 7719 7720The ACPI 2.0 semantics for the Extended IRQ resource descriptor 7721have been implemented. The interrupt polarity and mode are now 7722independently set. 7723 7724Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 7725appearing in Package objects were not properly converted to 7726integers when the internal Package was converted to an external 7727object (via the AcpiEvaluateObject interface.) 7728 7729Fixed a problem with the namespace object deletion mechanism for 7730objects created by control methods. There were two parts to this 7731problem: 1) Objects created during the initialization phase method 7732parse were not being deleted, and 2) The object owner ID mechanism 7733to track objects was broken. 7734 7735Fixed a problem where the use of the ASL Scope operator within a 7736control method would result in an invalid opcode exception. 7737 7738Fixed a problem introduced in the previous label where the buffer 7739length required for the _PRT structure was not being returned 7740correctly. 7741 7742Code and Data Size: Current core subsystem library sizes are shown 7743below. These are the code and data sizes for the acpica.lib 7744produced by the Microsoft Visual C++ 6.0 compiler, and these 7745values do not include any ACPI driver or OSPM code. The debug 7746version of the code includes the debug output trace mechanism and 7747has a larger code and data size. Note that these values will vary 7748depending on the efficiency of the compiler and the compiler 7749options used during generation. 7750 7751 Previous Release (11_20_01) 7752 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 7753 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 7754 7755 Current Release: 7756 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 7757 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 7758 7759 2) Linux: 7760 7761Updated all files to apply cleanly against 2.4.16. 7762 7763Added basic PCI Interrupt Routing Table (PRT) support for IA32 7764(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 7765version supports both static and dyanmic PRT entries, but dynamic 7766entries are treated as if they were static (not yet 7767reconfigurable). Architecture- specific code to use this data is 7768absent on IA32 but should be available shortly. 7769 7770Changed the initialization sequence to start the ACPI interpreter 7771(acpi_init) prior to initialization of the PCI driver (pci_init) 7772in init/main.c. This ordering is required to support PRT and 7773facilitate other (future) enhancement. A side effect is that the 7774ACPI bus driver and certain device drivers can no longer be loaded 7775as modules. 7776 7777Modified the 'make menuconfig' options to allow PCI Interrupt 7778Routing support to be included without the ACPI Bus and other 7779device drivers. 7780 7781 3) ASL Compiler, version X2033: 7782 7783Fixed some issues with the use of the new CopyObject and 7784DataTableRegion operators. Both are fully functional. 7785 7786 ---------------------------------------- 7787Summary of changes for this label: 11_20_01 7788 7789 20 November 2001. Summary of changes for this release. 7790 7791 1) ACPI CA Core Subsystem: 7792 7793Updated Index support to match ACPI 2.0 semantics. Storing a 7794Integer, String, or Buffer to an Index of a Buffer will store only 7795the least-significant byte of the source to the Indexed buffer 7796byte. Multiple writes are not performed. 7797 7798Fixed a problem where the access type used in an AccessAs ASL 7799operator was not recorded correctly into the field object. 7800 7801Fixed a problem where ASL Event objects were created in a 7802signalled state. Events are now created in an unsignalled state. 7803 7804The internal object cache is now purged after table loading and 7805initialization to reduce the use of dynamic kernel memory -- on 7806the assumption that object use is greatest during the parse phase 7807of the entire table (versus the run-time use of individual control 7808methods.) 7809 7810ACPI 2.0 variable-length packages are now fully operational. 7811 7812Code and Data Size: Code and Data optimizations have permitted new 7813feature development with an actual reduction in the library size. 7814Current core subsystem library sizes are shown below. These are 7815the code and data sizes for the acpica.lib produced by the 7816Microsoft Visual C++ 6.0 compiler, and these values do not include 7817any ACPI driver or OSPM code. The debug version of the code 7818includes the debug output trace mechanism and has a larger code 7819and data size. Note that these values will vary depending on the 7820efficiency of the compiler and the compiler options used during 7821generation. 7822 7823 Previous Release (11_09_01): 7824 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 7825 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 7826 7827 Current Release: 7828 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 7829 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 7830 7831 2) Linux: 7832 7833Enhanced the ACPI boot-time initialization code to allow the use 7834of Local APIC tables for processor enumeration on IA-32, and to 7835pave the way for a fully MPS-free boot (on SMP systems) in the 7836near future. This functionality replaces 7837arch/i386/kernel/acpitables.c, which was introduced in an earlier 78382.4.15-preX release. To enable this feature you must add 7839"acpi_boot=on" to the kernel command line -- see the help entry 7840for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 7841the works... 7842 7843Restructured the configuration options to allow boot-time table 7844parsing support without inclusion of the ACPI Interpreter (and 7845other) code. 7846 7847NOTE: This release does not include fixes for the reported events, 7848power-down, and thermal passive cooling issues (coming soon). 7849 7850 3) ASL Compiler: 7851 7852Added additional typechecking for Fields within restricted access 7853Operation Regions. All fields within EC and CMOS regions must be 7854declared with ByteAcc. All fields withing SMBus regions must be 7855declared with the BufferAcc access type. 7856 7857Fixed a problem where the listing file output of control methods 7858no longer interleaved the actual AML code with the ASL source 7859code. 7860 7861 7862 7863 7864---------------------------------------- 7865Summary of changes for this label: 11_09_01 7866 78671) ACPI CA Core Subsystem: 7868 7869Implemented ACPI 2.0-defined support for writes to fields with a 7870Buffer, String, or Integer source operand that is smaller than the 7871target field. In these cases, the source operand is zero-extended 7872to fill the target field. 7873 7874Fixed a problem where a Field starting bit offset (within the 7875parent operation region) was calculated incorrectly if the 7876 7877alignment of the field differed from the access width. This 7878affected CreateWordField, CreateDwordField, CreateQwordField, and 7879possibly other fields that use the "AccessAny" keyword. 7880 7881Fixed a problem introduced in the 11_02_01 release where indirect 7882stores through method arguments did not operate correctly. 7883 78842) Linux: 7885 7886Implemented boot-time ACPI table parsing support 7887(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 7888facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 7889legacy BIOS interfaces (e.g. MPS) for the configuration of system 7890processors, memory, and interrupts during setup_arch(). Note that 7891this patch does not include the required architecture-specific 7892changes required to apply this information -- subsequent patches 7893will be posted for both IA32 and IA64 to achieve this. 7894 7895Added low-level sleep support for IA32 platforms, courtesy of Pat 7896Mochel. This allows IA32 systems to transition to/from various 7897sleeping states (e.g. S1, S3), although the lack of a centralized 7898driver model and power-manageable drivers will prevent its 7899(successful) use on most systems. 7900 7901Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 7902submenu, unified IA32 and IA64 options, added new "Boot using ACPI 7903tables" option, etc. 7904 7905Increased the default timeout for the EC driver from 1ms to 10ms 7906(1000 cycles of 10us) to try to address AE_TIME errors during EC 7907transactions. 7908 7909 ---------------------------------------- 7910Summary of changes for this label: 11_02_01 7911 79121) ACPI CA Core Subsystem: 7913 7914ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 7915(QWordAcc keyword). All ACPI 2.0 64-bit support is now 7916implemented. 7917 7918OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 7919changes to support ACPI 2.0 Qword field access. Read/Write 7920PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 7921accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 7922the value parameter for the address space handler interface is now 7923an ACPI_INTEGER. OSL implementations of these interfaces must now 7924handle the case where the Width parameter is 64. 7925 7926Index Fields: Fixed a problem where unaligned bit assembly and 7927disassembly for IndexFields was not supported correctly. 7928 7929Index and Bank Fields: Nested Index and Bank Fields are now 7930supported. During field access, a check is performed to ensure 7931that the value written to an Index or Bank register is not out of 7932the range of the register. The Index (or Bank) register is 7933written before each access to the field data. Future support will 7934include allowing individual IndexFields to be wider than the 7935DataRegister width. 7936 7937Fields: Fixed a problem where the AML interpreter was incorrectly 7938attempting to write beyond the end of a Field/OpRegion. This was 7939a boundary case that occurred when a DWORD field was written to a 7940BYTE access OpRegion, forcing multiple writes and causing the 7941interpreter to write one datum too many. 7942 7943Fields: Fixed a problem with Field/OpRegion access where the 7944starting bit address of a field was incorrectly calculated if the 7945current access type was wider than a byte (WordAcc, DwordAcc, or 7946QwordAcc). 7947 7948Fields: Fixed a problem where forward references to individual 7949FieldUnits (individual Field names within a Field definition) were 7950not resolved during the AML table load. 7951 7952Fields: Fixed a problem where forward references from a Field 7953definition to the parent Operation Region definition were not 7954resolved during the AML table load. 7955 7956Fields: Duplicate FieldUnit names within a scope are now detected 7957during AML table load. 7958 7959Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 7960returned an incorrect name for the root node. 7961 7962Code and Data Size: Code and Data optimizations have permitted new 7963feature development with an actual reduction in the library size. 7964Current core subsystem library sizes are shown below. These are 7965the code and data sizes for the acpica.lib produced by the 7966Microsoft Visual C++ 6.0 compiler, and these values do not include 7967any ACPI driver or OSPM code. The debug version of the code 7968includes the debug output trace mechanism and has a larger code 7969and data size. Note that these values will vary depending on the 7970efficiency of the compiler and the compiler options used during 7971generation. 7972 7973 Previous Release (10_18_01): 7974 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 7975 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 7976 7977 Current Release: 7978 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 7979 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 7980 7981 2) Linux: 7982 7983Improved /proc processor output (Pavel Machek) Re-added 7984MODULE_LICENSE("GPL") to all modules. 7985 7986 3) ASL Compiler version X2030: 7987 7988Duplicate FieldUnit names within a scope are now detected and 7989flagged as errors. 7990 7991 4) Documentation: 7992 7993Programmer Reference updated to reflect OSL and address space 7994handler interface changes described above. 7995 7996---------------------------------------- 7997Summary of changes for this label: 10_18_01 7998 7999ACPI CA Core Subsystem: 8000 8001Fixed a problem with the internal object reference count mechanism 8002that occasionally caused premature object deletion. This resolves 8003all of the outstanding problem reports where an object is deleted 8004in the middle of an interpreter evaluation. Although this problem 8005only showed up in rather obscure cases, the solution to the 8006problem involved an adjustment of all reference counts involving 8007objects attached to namespace nodes. 8008 8009Fixed a problem with Field support in the interpreter where 8010writing to an aligned field whose length is an exact multiple (2 8011or greater) of the field access granularity would cause an attempt 8012to write beyond the end of the field. 8013 8014The top level AML opcode execution functions within the 8015interpreter have been renamed with a more meaningful and 8016consistent naming convention. The modules exmonad.c and 8017exdyadic.c were eliminated. New modules are exoparg1.c, 8018exoparg2.c, exoparg3.c, and exoparg6.c. 8019 8020Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 8021 8022Fixed a problem where the AML debugger was causing some internal 8023objects to not be deleted during subsystem termination. 8024 8025Fixed a problem with the external AcpiEvaluateObject interface 8026where the subsystem would fault if the named object to be 8027evaluated refered to a constant such as Zero, Ones, etc. 8028 8029Fixed a problem with IndexFields and BankFields where the 8030subsystem would fault if the index, data, or bank registers were 8031not defined in the same scope as the field itself. 8032 8033Added printf format string checking for compilers that support 8034this feature. Corrected more than 50 instances of issues with 8035format specifiers within invocations of ACPI_DEBUG_PRINT 8036throughout the core subsystem code. 8037 8038The ASL "Revision" operator now returns the ACPI support level 8039implemented in the core - the value "2" since the ACPI 2.0 support 8040is more than 50% implemented. 8041 8042Enhanced the output of the AML debugger "dump namespace" command 8043to output in a more human-readable form. 8044 8045Current core subsystem library code sizes are shown below. These 8046 8047are the code and data sizes for the acpica.lib produced by the 8048Microsoft Visual C++ 6.0 compiler, and these values do not include 8049any ACPI driver or OSPM code. The debug version of the code 8050includes the full debug trace mechanism -- leading to a much 8051 8052larger code and data size. Note that these values will vary 8053depending on the efficiency of the compiler and the compiler 8054options used during generation. 8055 8056 Previous Label (09_20_01): 8057 Non-Debug Version: 65K Code, 5K Data, 70K Total 8058 Debug Version: 138K Code, 58K Data, 196K Total 8059 8060 This Label: 8061 8062 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 8063 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 8064 8065Linux: 8066 8067Implemented a "Bad BIOS Blacklist" to track machines that have 8068known ASL/AML problems. 8069 8070Enhanced the /proc interface for the thermal zone driver and added 8071support for _HOT (the critical suspend trip point). The 'info' 8072file now includes threshold/policy information, and allows setting 8073of _SCP (cooling preference) and _TZP (polling frequency) values 8074to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 8075frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 8076preference to the passive/quiet mode (if supported by the ASL). 8077 8078Implemented a workaround for a gcc bug that resuted in an OOPs 8079when loading the control method battery driver. 8080 8081 ---------------------------------------- 8082Summary of changes for this label: 09_20_01 8083 8084 ACPI CA Core Subsystem: 8085 8086The AcpiEnableEvent and AcpiDisableEvent interfaces have been 8087modified to allow individual GPE levels to be flagged as wake- 8088enabled (i.e., these GPEs are to remain enabled when the platform 8089sleeps.) 8090 8091The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 8092support wake-enabled GPEs. This means that upon entering the 8093sleep state, all GPEs that are not wake-enabled are disabled. 8094When leaving the sleep state, these GPEs are reenabled. 8095 8096A local double-precision divide/modulo module has been added to 8097enhance portability to OS kernels where a 64-bit math library is 8098not available. The new module is "utmath.c". 8099 8100Several optimizations have been made to reduce the use of CPU 8101stack. Originally over 2K, the maximum stack usage is now below 81022K at 1860 bytes (1.82k) 8103 8104Fixed a problem with the AcpiGetFirmwareTable interface where the 8105root table pointer was not mapped into a logical address properly. 8106 8107Fixed a problem where a NULL pointer was being dereferenced in the 8108interpreter code for the ASL Notify operator. 8109 8110Fixed a problem where the use of the ASL Revision operator 8111returned an error. This operator now returns the current version 8112of the ACPI CA core subsystem. 8113 8114Fixed a problem where objects passed as control method parameters 8115to AcpiEvaluateObject were always deleted at method termination. 8116However, these objects may end up being stored into the namespace 8117by the called method. The object reference count mechanism was 8118applied to these objects instead of a force delete. 8119 8120Fixed a problem where static strings or buffers (contained in the 8121AML code) that are declared as package elements within the ASL 8122code could cause a fault because the interpreter would attempt to 8123delete them. These objects are now marked with the "static 8124object" flag to prevent any attempt to delete them. 8125 8126Implemented an interpreter optimization to use operands directly 8127from the state object instead of extracting the operands to local 8128variables. This reduces stack use and code size, and improves 8129performance. 8130 8131The module exxface.c was eliminated as it was an unnecessary extra 8132layer of code. 8133 8134Current core subsystem library code sizes are shown below. These 8135are the code and data sizes for the acpica.lib produced by the 8136Microsoft Visual C++ 6.0 compiler, and these values do not include 8137any ACPI driver or OSPM code. The debug version of the code 8138includes the full debug trace mechanism -- leading to a much 8139larger code and data size. Note that these values will vary 8140depending on the efficiency of the compiler and the compiler 8141options used during generation. 8142 8143 Non-Debug Version: 65K Code, 5K Data, 70K Total 8144(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 8145Total (Previously 195K) 8146 8147Linux: 8148 8149Support for ACPI 2.0 64-bit integers has been added. All ACPI 8150Integer objects are now 64 bits wide 8151 8152All Acpi data types and structures are now in lower case. Only 8153Acpi macros are upper case for differentiation. 8154 8155 Documentation: 8156 8157Changes to the external interfaces as described above. 8158 8159 ---------------------------------------- 8160Summary of changes for this label: 08_31_01 8161 8162 ACPI CA Core Subsystem: 8163 8164A bug with interpreter implementation of the ASL Divide operator 8165was found and fixed. The implicit function return value (not the 8166explicit store operands) was returning the remainder instead of 8167the quotient. This was a longstanding bug and it fixes several 8168known outstanding issues on various platforms. 8169 8170The ACPI_DEBUG_PRINT and function trace entry/exit macros have 8171been further optimized for size. There are 700 invocations of the 8172DEBUG_PRINT macro alone, so each optimization reduces the size of 8173the debug version of the subsystem significantly. 8174 8175A stack trace mechanism has been implemented. The maximum stack 8176usage is about 2K on 32-bit platforms. The debugger command "stat 8177stack" will display the current maximum stack usage. 8178 8179All public symbols and global variables within the subsystem are 8180now prefixed with the string "Acpi". This keeps all of the 8181symbols grouped together in a kernel map, and avoids conflicts 8182with other kernel subsystems. 8183 8184Most of the internal fixed lookup tables have been moved into the 8185code segment via the const operator. 8186 8187Several enhancements have been made to the interpreter to both 8188reduce the code size and improve performance. 8189 8190Current core subsystem library code sizes are shown below. These 8191are the code and data sizes for the acpica.lib produced by the 8192Microsoft Visual C++ 6.0 compiler, and these values do not include 8193any ACPI driver or OSPM code. The debug version of the code 8194includes the full debug trace mechanism which contains over 700 8195invocations of the DEBUG_PRINT macro, 500 function entry macro 8196invocations, and over 900 function exit macro invocations -- 8197leading to a much larger code and data size. Note that these 8198values will vary depending on the efficiency of the compiler and 8199the compiler options used during generation. 8200 8201 Non-Debug Version: 64K Code, 5K Data, 69K Total 8202Debug Version: 137K Code, 58K Data, 195K Total 8203 8204 Linux: 8205 8206Implemented wbinvd() macro, pending a kernel-wide definition. 8207 8208Fixed /proc/acpi/event to handle poll() and short reads. 8209 8210 ASL Compiler, version X2026: 8211 8212Fixed a problem introduced in the previous label where the AML 8213 8214code emitted for package objects produced packages with zero 8215length. 8216 8217 ---------------------------------------- 8218Summary of changes for this label: 08_16_01 8219 8220ACPI CA Core Subsystem: 8221 8222The following ACPI 2.0 ASL operators have been implemented in the 8223AML interpreter (These are already supported by the Intel ASL 8224compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 8225ToBuffer. Support for 64-bit AML constants is implemented in the 8226AML parser, debugger, and disassembler. 8227 8228The internal memory tracking mechanism (leak detection code) has 8229been upgraded to reduce the memory overhead (a separate tracking 8230block is no longer allocated for each memory allocation), and now 8231supports all of the internal object caches. 8232 8233The data structures and code for the internal object caches have 8234been coelesced and optimized so that there is a single cache and 8235memory list data structure and a single group of functions that 8236implement generic cache management. This has reduced the code 8237size in both the debug and release versions of the subsystem. 8238 8239The DEBUG_PRINT macro(s) have been optimized for size and replaced 8240by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 8241different, because it generates a single call to an internal 8242function. This results in a savings of about 90 bytes per 8243invocation, resulting in an overall code and data savings of about 824416% in the debug version of the subsystem. 8245 8246 Linux: 8247 8248Fixed C3 disk corruption problems and re-enabled C3 on supporting 8249machines. 8250 8251Integrated low-level sleep code by Patrick Mochel. 8252 8253Further tweaked source code Linuxization. 8254 8255Other minor fixes. 8256 8257 ASL Compiler: 8258 8259Support for ACPI 2.0 variable length packages is fixed/completed. 8260 8261Fixed a problem where the optional length parameter for the ACPI 82622.0 ToString operator. 8263 8264Fixed multiple extraneous error messages when a syntax error is 8265detected within the declaration line of a control method. 8266 8267 ---------------------------------------- 8268Summary of changes for this label: 07_17_01 8269 8270ACPI CA Core Subsystem: 8271 8272Added a new interface named AcpiGetFirmwareTable to obtain any 8273ACPI table via the ACPI signature. The interface can be called at 8274any time during kernel initialization, even before the kernel 8275virtual memory manager is initialized and paging is enabled. This 8276allows kernel subsystems to obtain ACPI tables very early, even 8277before the ACPI CA subsystem is initialized. 8278 8279Fixed a problem where Fields defined with the AnyAcc attribute 8280could be resolved to the incorrect address under the following 8281conditions: 1) the field width is larger than 8 bits and 2) the 8282parent operation region is not defined on a DWORD boundary. 8283 8284Fixed a problem where the interpreter is not being locked during 8285namespace initialization (during execution of the _INI control 8286methods), causing an error when an attempt is made to release it 8287later. 8288 8289ACPI 2.0 support in the AML Interpreter has begun and will be 8290ongoing throughout the rest of this year. In this label, The Mod 8291operator is implemented. 8292 8293Added a new data type to contain full PCI addresses named 8294ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 8295and Function values. 8296 8297 Linux: 8298 8299Enhanced the Linux version of the source code to change most 8300capitalized ACPI type names to lowercase. For example, all 8301instances of ACPI_STATUS are changed to acpi_status. This will 8302result in a large diff, but the change is strictly cosmetic and 8303aligns the CA code closer to the Linux coding standard. 8304 8305OSL Interfaces: 8306 8307The interfaces to the PCI configuration space have been changed to 8308add the PCI Segment number and to split the single 32-bit combined 8309DeviceFunction field into two 16-bit fields. This was 8310accomplished by moving the four values that define an address in 8311PCI configuration space (segment, bus, device, and function) to 8312the new ACPI_PCI_ID structure. 8313 8314The changes to the PCI configuration space interfaces led to a 8315reexamination of the complete set of address space access 8316interfaces for PCI, I/O, and Memory. The previously existing 18 8317interfaces have proven difficult to maintain (any small change 8318must be propagated across at least 6 interfaces) and do not easily 8319allow for future expansion to 64 bits if necessary. Also, on some 8320systems, it would not be appropriate to demultiplex the access 8321width (8, 16, 32,or 64) before calling the OSL if the 8322corresponding native OS interfaces contain a similar access width 8323parameter. For these reasons, the 18 address space interfaces 8324have been replaced by these 6 new ones: 8325 8326AcpiOsReadPciConfiguration 8327AcpiOsWritePciConfiguration 8328AcpiOsReadMemory 8329AcpiOsWriteMemory 8330AcpiOsReadPort 8331AcpiOsWritePort 8332 8333Added a new interface named AcpiOsGetRootPointer to allow the OSL 8334to perform the platform and/or OS-specific actions necessary to 8335obtain the ACPI RSDP table pointer. On IA-32 platforms, this 8336interface will simply call down to the CA core to perform the low- 8337memory search for the table. On IA-64, the RSDP is obtained from 8338EFI. Migrating this interface to the OSL allows the CA core to 8339 8340remain OS and platform independent. 8341 8342Added a new interface named AcpiOsSignal to provide a generic 8343"function code and pointer" interface for various miscellaneous 8344signals and notifications that must be made to the host OS. The 8345first such signals are intended to support the ASL Fatal and 8346Breakpoint operators. In the latter case, the AcpiOsBreakpoint 8347interface has been obsoleted. 8348 8349The definition of the AcpiFormatException interface has been 8350changed to simplify its use. The caller no longer must supply a 8351buffer to the call; A pointer to a const string is now returned 8352directly. This allows the call to be easily used in printf 8353statements, etc. since the caller does not have to manage a local 8354buffer. 8355 8356 8357 ASL Compiler, Version X2025: 8358 8359The ACPI 2.0 Switch/Case/Default operators have been implemented 8360and are fully functional. They will work with all ACPI 1.0 8361interpreters, since the operators are simply translated to If/Else 8362pairs. 8363 8364The ACPI 2.0 ElseIf operator is implemented and will also work 8365with 1.0 interpreters, for the same reason. 8366 8367Implemented support for ACPI 2.0 variable-length packages. These 8368packages have a separate opcode, and their size is determined by 8369the interpreter at run-time. 8370 8371Documentation The ACPI CA Programmer Reference has been updated to 8372reflect the new interfaces and changes to existing interfaces. 8373 8374 ------------------------------------------ 8375Summary of changes for this label: 06_15_01 8376 8377 ACPI CA Core Subsystem: 8378 8379Fixed a problem where a DWORD-accessed field within a Buffer 8380object would get its byte address inadvertently rounded down to 8381the nearest DWORD. Buffers are always Byte-accessible. 8382 8383 ASL Compiler, version X2024: 8384 8385Fixed a problem where the Switch() operator would either fault or 8386hang the compiler. Note however, that the AML code for this ACPI 83872.0 operator is not yet implemented. 8388 8389Compiler uses the new AcpiOsGetTimer interface to obtain compile 8390timings. 8391 8392Implementation of the CreateField operator automatically converts 8393a reference to a named field within a resource descriptor from a 8394byte offset to a bit offset if required. 8395 8396Added some missing named fields from the resource descriptor 8397support. These are the names that are automatically created by the 8398compiler to reference fields within a descriptor. They are only 8399valid at compile time and are not passed through to the AML 8400interpreter. 8401 8402Resource descriptor named fields are now typed as Integers and 8403subject to compile-time typechecking when used in expressions. 8404 8405 ------------------------------------------ 8406Summary of changes for this label: 05_18_01 8407 8408 ACPI CA Core Subsystem: 8409 8410Fixed a couple of problems in the Field support code where bits 8411from adjacent fields could be returned along with the proper field 8412bits. Restructured the field support code to improve performance, 8413readability and maintainability. 8414 8415New DEBUG_PRINTP macro automatically inserts the procedure name 8416into the output, saving hundreds of copies of procedure name 8417strings within the source, shrinking the memory footprint of the 8418debug version of the core subsystem. 8419 8420 Source Code Structure: 8421 8422The source code directory tree was restructured to reflect the 8423current organization of the component architecture. Some files 8424and directories have been moved and/or renamed. 8425 8426 Linux: 8427 8428Fixed leaking kacpidpc processes. 8429 8430Fixed queueing event data even when /proc/acpi/event is not 8431opened. 8432 8433 ASL Compiler, version X2020: 8434 8435Memory allocation performance enhancement - over 24X compile time 8436improvement on large ASL files. Parse nodes and namestring 8437buffers are now allocated from a large internal compiler buffer. 8438 8439The temporary .SRC file is deleted unless the "-s" option is 8440specified 8441 8442The "-d" debug output option now sends all output to the .DBG file 8443instead of the console. 8444 8445"External" second parameter is now optional 8446 8447"ElseIf" syntax now properly allows the predicate 8448 8449Last operand to "Load" now recognized as a Target operand 8450 8451Debug object can now be used anywhere as a normal object. 8452 8453ResourceTemplate now returns an object of type BUFFER 8454 8455EISAID now returns an object of type INTEGER 8456 8457"Index" now works with a STRING operand 8458 8459"LoadTable" now accepts optional parameters 8460 8461"ToString" length parameter is now optional 8462 8463"Interrupt (ResourceType," parse error fixed. 8464 8465"Register" with a user-defined region space parse error fixed 8466 8467Escaped backslash at the end of a string ("\\") scan/parse error 8468fixed 8469 8470"Revision" is now an object of type INTEGER. 8471 8472 8473 8474------------------------------------------ 8475Summary of changes for this label: 05_02_01 8476 8477Linux: 8478 8479/proc/acpi/event now blocks properly. 8480 8481Removed /proc/sys/acpi. You can still dump your DSDT from 8482/proc/acpi/dsdt. 8483 8484 ACPI CA Core Subsystem: 8485 8486Fixed a problem introduced in the previous label where some of the 8487"small" resource descriptor types were not recognized. 8488 8489Improved error messages for the case where an ASL Field is outside 8490the range of the parent operation region. 8491 8492 ASL Compiler, version X2018: 8493 8494 8495Added error detection for ASL Fields that extend beyond the length 8496of the parent operation region (only if the length of the region 8497is known at compile time.) This includes fields that have a 8498minimum access width that is smaller than the parent region, and 8499individual field units that are partially or entirely beyond the 8500extent of the parent. 8501 8502 8503 8504------------------------------------------ 8505Summary of changes for this label: 04_27_01 8506 8507 ACPI CA Core Subsystem: 8508 8509Fixed a problem where the namespace mutex could be released at the 8510wrong time during execution of AcpiRemoveAddressSpaceHandler. 8511 8512Added optional thread ID output for debug traces, to simplify 8513debugging of multiple threads. Added context switch notification 8514when the debug code realizes that a different thread is now 8515executing ACPI code. 8516 8517Some additional external data types have been prefixed with the 8518string "ACPI_" for consistency. This may effect existing code. 8519The data types affected are the external callback typedefs - e.g., 8520 8521WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 8522 8523 Linux: 8524 8525Fixed an issue with the OSL semaphore implementation where a 8526thread was waking up with an error from receiving a SIGCHLD 8527signal. 8528 8529Linux version of ACPI CA now uses the system C library for string 8530manipulation routines instead of a local implementation. 8531 8532Cleaned up comments and removed TBDs. 8533 8534 ASL Compiler, version X2017: 8535 8536Enhanced error detection and reporting for all file I/O 8537operations. 8538 8539 Documentation: 8540 8541Programmer Reference updated to version 1.06. 8542 8543 8544 8545------------------------------------------ 8546Summary of changes for this label: 04_13_01 8547 8548 ACPI CA Core Subsystem: 8549 8550Restructured support for BufferFields and RegionFields. 8551BankFields support is now fully operational. All known 32-bit 8552limitations on field sizes have been removed. Both BufferFields 8553and (Operation) RegionFields are now supported by the same field 8554management code. 8555 8556Resource support now supports QWORD address and IO resources. The 855716/32/64 bit address structures and the Extended IRQ structure 8558have been changed to properly handle Source Resource strings. 8559 8560A ThreadId of -1 is now used to indicate a "mutex not acquired" 8561condition internally and must never be returned by AcpiOsThreadId. 8562This reserved value was changed from 0 since Unix systems allow a 8563thread ID of 0. 8564 8565Linux: 8566 8567Driver code reorganized to enhance portability 8568 8569Added a kernel configuration option to control ACPI_DEBUG 8570 8571Fixed the EC driver to honor _GLK. 8572 8573ASL Compiler, version X2016: 8574 8575Fixed support for the "FixedHw" keyword. Previously, the FixedHw 8576address space was set to 0, not 0x7f as it should be. 8577 8578 ------------------------------------------ 8579Summary of changes for this label: 03_13_01 8580 8581 ACPI CA Core Subsystem: 8582 8583During ACPI initialization, the _SB_._INI method is now run if 8584present. 8585 8586Notify handler fix - notifies are deferred until the parent method 8587completes execution. This fixes the "mutex already acquired" 8588issue seen occasionally. 8589 8590Part of the "implicit conversion" rules in ACPI 2.0 have been 8591found to cause compatibility problems with existing ASL/AML. The 8592convert "result-to-target-type" implementation has been removed 8593for stores to method Args and Locals. Source operand conversion 8594is still fully implemented. Possible changes to ACPI 2.0 8595specification pending. 8596 8597Fix to AcpiRsCalculatePciRoutingTableLength to return correct 8598length. 8599 8600Fix for compiler warnings for 64-bit compiles. 8601 8602 Linux: 8603 8604/proc output aligned for easier parsing. 8605 8606Release-version compile problem fixed. 8607 8608New kernel configuration options documented in Configure.help. 8609 8610IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 8611context" message. 8612 8613 OSPM: 8614 8615Power resource driver integrated with bus manager. 8616 8617Fixed kernel fault during active cooling for thermal zones. 8618 8619Source Code: 8620 8621The source code tree has been restructured. 8622 8623 8624 8625------------------------------------------ 8626Summary of changes for this label: 03_02_01 8627 8628 Linux OS Services Layer (OSL): 8629 8630Major revision of all Linux-specific code. 8631 8632Modularized all ACPI-specific drivers. 8633 8634Added new thermal zone and power resource drivers. 8635 8636Revamped /proc interface (new functionality is under /proc/acpi). 8637 8638New kernel configuration options. 8639 8640 Linux known issues: 8641 8642New kernel configuration options not documented in Configure.help 8643yet. 8644 8645 8646Module dependencies not currently implemented. If used, they 8647should be loaded in this order: busmgr, power, ec, system, 8648processor, battery, ac_adapter, button, thermal. 8649 8650Modules will not load if CONFIG_MODVERSION is set. 8651 8652IBM 600E - entering S5 may reboot instead of shutting down. 8653 8654IBM 600E - Sleep button may generate "Invalid <NULL> context" 8655message. 8656 8657Some systems may fail with "execution mutex already acquired" 8658message. 8659 8660 ACPI CA Core Subsystem: 8661 8662Added a new OSL Interface, AcpiOsGetThreadId. This was required 8663for the deadlock detection code. Defined to return a non-zero, 32- 8664bit thread ID for the currently executing thread. May be a non- 8665zero constant integer on single-thread systems. 8666 8667Implemented deadlock detection for internal subsystem mutexes. We 8668may add conditional compilation for this code (debug only) later. 8669 8670ASL/AML Mutex object semantics are now fully supported. This 8671includes multiple acquires/releases by owner and support for the 8672 8673Mutex SyncLevel parameter. 8674 8675A new "Force Release" mechanism automatically frees all ASL 8676Mutexes that have been acquired but not released when a thread 8677exits the interpreter. This forces conformance to the ACPI spec 8678("All mutexes must be released when an invocation exits") and 8679prevents deadlocked ASL threads. This mechanism can be expanded 8680(later) to monitor other resource acquisitions if OEM ASL code 8681continues to misbehave (which it will). 8682 8683Several new ACPI exception codes have been added for the Mutex 8684support. 8685 8686Recursive method calls are now allowed and supported (the ACPI 8687spec does in fact allow recursive method calls.) The number of 8688recursive calls is subject to the restrictions imposed by the 8689SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 8690parameter. 8691 8692Implemented support for the SyncLevel parameter for control 8693methods (ACPI 2.0 feature) 8694 8695Fixed a deadlock problem when multiple threads attempted to use 8696the interpreter. 8697 8698Fixed a problem where the string length of a String package 8699element was not always set in a package returned from 8700AcpiEvaluateObject. 8701 8702Fixed a problem where the length of a String package element was 8703not always included in the length of the overall package returned 8704from AcpiEvaluateObject. 8705 8706Added external interfaces (Acpi*) to the ACPI debug memory 8707manager. This manager keeps a list of all outstanding 8708allocations, and can therefore detect memory leaks and attempts to 8709free memory blocks more than once. Useful for code such as the 8710power manager, etc. May not be appropriate for device drivers. 8711Performance with the debug code enabled is slow. 8712 8713The ACPI Global Lock is now an optional hardware element. 8714 8715 ASL Compiler Version X2015: 8716 8717Integrated changes to allow the compiler to be generated on 8718multiple platforms. 8719 8720Linux makefile added to generate the compiler on Linux 8721 8722 Source Code: 8723 8724All platform-specific headers have been moved to their own 8725subdirectory, Include/Platform. 8726 8727New source file added, Interpreter/ammutex.c 8728 8729New header file, Include/acstruct.h 8730 8731 Documentation: 8732 8733The programmer reference has been updated for the following new 8734interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 8735 8736 ------------------------------------------ 8737Summary of changes for this label: 02_08_01 8738 8739Core ACPI CA Subsystem: Fixed a problem where an error was 8740incorrectly returned if the return resource buffer was larger than 8741the actual data (in the resource interfaces). 8742 8743References to named objects within packages are resolved to the 8744 8745full pathname string before packages are returned directly (via 8746the AcpiEvaluateObject interface) or indirectly via the resource 8747interfaces. 8748 8749Linux OS Services Layer (OSL): 8750 8751Improved /proc battery interface. 8752 8753 8754Added C-state debugging output and other miscellaneous fixes. 8755 8756ASL Compiler Version X2014: 8757 8758All defined method arguments can now be used as local variables, 8759including the ones that are not actually passed in as parameters. 8760The compiler tracks initialization of the arguments and issues an 8761exception if they are used without prior assignment (just like 8762locals). 8763 8764The -o option now specifies a filename prefix that is used for all 8765output files, including the AML output file. Otherwise, the 8766default behavior is as follows: 1) the AML goes to the file 8767specified in the DSDT. 2) all other output files use the input 8768source filename as the base. 8769 8770 ------------------------------------------ 8771Summary of changes for this label: 01_25_01 8772 8773Core ACPI CA Subsystem: Restructured the implementation of object 8774store support within the interpreter. This includes support for 8775the Store operator as well as any ASL operators that include a 8776target operand. 8777 8778Partially implemented support for Implicit Result-to-Target 8779conversion. This is when a result object is converted on the fly 8780to the type of an existing target object. Completion of this 8781support is pending further analysis of the ACPI specification 8782concerning this matter. 8783 8784CPU-specific code has been removed from the subsystem (hardware 8785directory). 8786 8787New Power Management Timer functions added 8788 8789Linux OS Services Layer (OSL): Moved system state transition code 8790to the core, fixed it, and modified Linux OSL accordingly. 8791 8792Fixed C2 and C3 latency calculations. 8793 8794 8795We no longer use the compilation date for the version message on 8796initialization, but retrieve the version from AcpiGetSystemInfo(). 8797 8798Incorporated for fix Sony VAIO machines. 8799 8800Documentation: The Programmer Reference has been updated and 8801reformatted. 8802 8803 8804ASL Compiler: Version X2013: Fixed a problem where the line 8805numbering and error reporting could get out of sync in the 8806presence of multiple include files. 8807 8808 ------------------------------------------ 8809Summary of changes for this label: 01_15_01 8810 8811Core ACPI CA Subsystem: 8812 8813Implemented support for type conversions in the execution of the 8814ASL Concatenate operator (The second operand is converted to 8815match the type of the first operand before concatenation.) 8816 8817Support for implicit source operand conversion is partially 8818implemented. The ASL source operand types Integer, Buffer, and 8819String are freely interchangeable for most ASL operators and are 8820converted by the interpreter on the fly as required. Implicit 8821Target operand conversion (where the result is converted to the 8822target type before storing) is not yet implemented. 8823 8824Support for 32-bit and 64-bit BCD integers is implemented. 8825 8826Problem fixed where a field read on an aligned field could cause a 8827read past the end of the field. 8828 8829New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 8830does not return a value, but the caller expects one. (The ASL 8831compiler flags this as a warning.) 8832 8833ASL Compiler: 8834 8835Version X2011: 88361. Static typechecking of all operands is implemented. This 8837prevents the use of invalid objects (such as using a Package where 8838an Integer is required) at compile time instead of at interpreter 8839run-time. 88402. The ASL source line is printed with ALL errors and warnings. 88413. Bug fix for source EOF without final linefeed. 88424. Debug option is split into a parse trace and a namespace trace. 88435. Namespace output option (-n) includes initial values for 8844integers and strings. 88456. Parse-only option added for quick syntax checking. 88467. Compiler checks for duplicate ACPI name declarations 8847 8848Version X2012: 88491. Relaxed typechecking to allow interchangeability between 8850strings, integers, and buffers. These types are now converted by 8851the interpreter at runtime. 88522. Compiler reports time taken by each internal subsystem in the 8853debug output file. 8854 8855 8856 ------------------------------------------ 8857Summary of changes for this label: 12_14_00 8858 8859ASL Compiler: 8860 8861This is the first official release of the compiler. Since the 8862compiler requires elements of the Core Subsystem, this label 8863synchronizes everything. 8864 8865------------------------------------------ 8866Summary of changes for this label: 12_08_00 8867 8868 8869Fixed a problem where named references within the ASL definition 8870of both OperationRegions and CreateXXXFields did not work 8871properly. The symptom was an AE_AML_OPERAND_TYPE during 8872initialization of the region/field. This is similar (but not 8873related internally) to the problem that was fixed in the last 8874label. 8875 8876Implemented both 32-bit and 64-bit support for the BCD ASL 8877functions ToBCD and FromBCD. 8878 8879Updated all legal headers to include "2000" in the copyright 8880years. 8881 8882 ------------------------------------------ 8883Summary of changes for this label: 12_01_00 8884 8885Fixed a problem where method invocations within the ASL definition 8886of both OperationRegions and CreateXXXFields did not work 8887properly. The symptom was an AE_AML_OPERAND_TYPE during 8888initialization of the region/field: 8889 8890 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 8891[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 8892(0x3005) 8893 8894Fixed a problem where operators with more than one nested 8895subexpression would fail. The symptoms were varied, by mostly 8896AE_AML_OPERAND_TYPE errors. This was actually a rather serious 8897problem that has gone unnoticed until now. 8898 8899 Subtract (Add (1,2), Multiply (3,4)) 8900 8901Fixed a problem where AcpiGetHandle didn't quite get fixed in the 8902previous build (The prefix part of a relative path was handled 8903incorrectly). 8904 8905Fixed a problem where Operation Region initialization failed if 8906the operation region name was a "namepath" instead of a simple 8907"nameseg". Symptom was an AE_NO_OPERAND error. 8908 8909Fixed a problem where an assignment to a local variable via the 8910indirect RefOf mechanism only worked for the first such 8911assignment. Subsequent assignments were ignored. 8912 8913 ------------------------------------------ 8914Summary of changes for this label: 11_15_00 8915 8916ACPI 2.0 table support with backwards support for ACPI 1.0 and the 89170.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 8918the AML interpreter does NOT have support for the new 2.0 ASL 8919grammar terms at this time. 8920 8921All ACPI hardware access is via the GAS structures in the ACPI 2.0 8922FADT. 8923 8924All physical memory addresses across all platforms are now 64 bits 8925wide. Logical address width remains dependent on the platform 8926(i.e., "void *"). 8927 8928AcpiOsMapMemory interface changed to a 64-bit physical address. 8929 8930The AML interpreter integer size is now 64 bits, as per the ACPI 89312.0 specification. 8932 8933For backwards compatibility with ACPI 1.0, ACPI tables with a 8934revision number less than 2 use 32-bit integers only. 8935 8936Fixed a problem where the evaluation of OpRegion operands did not 8937always resolve them to numbers properly. 8938 8939------------------------------------------ 8940Summary of changes for this label: 10_20_00 8941 8942Fix for CBN_._STA issue. This fix will allow correct access to 8943CBN_ OpRegions when the _STA returns 0x8. 8944 8945Support to convert ACPI constants (Ones, Zeros, One) to actual 8946values before a package object is returned 8947 8948Fix for method call as predicate to if/while construct causing 8949incorrect if/while behavior 8950 8951Fix for Else block package lengths sometimes calculated wrong (if 8952block > 63 bytes) 8953 8954Fix for Processor object length field, was always zero 8955 8956Table load abort if FACP sanity check fails 8957 8958Fix for problem with Scope(name) if name already exists 8959 8960Warning emitted if a named object referenced cannot be found 8961(resolved) during method execution. 8962 8963 8964 8965 8966 8967------------------------------------------ 8968Summary of changes for this label: 9_29_00 8969 8970New table initialization interfaces: AcpiInitializeSubsystem no 8971longer has any parameters AcpiFindRootPointer - Find the RSDP (if 8972necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 8973>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 8974AcpiLoadTables 8975 8976Note: These interface changes require changes to all existing OSDs 8977 8978The PCI_Config default address space handler is always installed 8979at the root namespace object. 8980 8981------------------------------------------- 8982Summary of changes for this label: 09_15_00 8983 8984The new initialization architecture is implemented. New 8985interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 8986AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 8987 8988(Namespace is automatically loaded when a table is loaded) 8989 8990The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 899152 bytes to 32 bytes. There is usually one of these for every 8992namespace object, so the memory savings is significant. 8993 8994Implemented just-in-time evaluation of the CreateField operators. 8995 8996Bug fixes for IA-64 support have been integrated. 8997 8998Additional code review comments have been implemented 8999 9000The so-called "third pass parse" has been replaced by a final walk 9001through the namespace to initialize all operation regions (address 9002spaces) and fields that have not yet been initialized during the 9003execution of the various _INI and REG methods. 9004 9005New file - namespace/nsinit.c 9006 9007------------------------------------------- 9008Summary of changes for this label: 09_01_00 9009 9010Namespace manager data structures have been reworked to change the 9011primary object from a table to a single object. This has 9012resulted in dynamic memory savings of 3X within the namespace and 90132X overall in the ACPI CA subsystem. 9014 9015Fixed problem where the call to AcpiEvFindPciRootBuses was 9016inadvertently left commented out. 9017 9018Reduced the warning count when generating the source with the GCC 9019compiler. 9020 9021Revision numbers added to each module header showing the 9022SourceSafe version of the file. Please refer to this version 9023number when giving us feedback or comments on individual modules. 9024 9025The main object types within the subsystem have been renamed to 9026clarify their purpose: 9027 9028ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 9029ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 9030ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 9031 9032NOTE: no changes to the initialization sequence are included in 9033this label. 9034 9035------------------------------------------- 9036Summary of changes for this label: 08_23_00 9037 9038Fixed problem where TerminateControlMethod was being called 9039multiple times per method 9040 9041Fixed debugger problem where single stepping caused a semaphore to 9042be oversignalled 9043 9044Improved performance through additional parse object caching - 9045added ACPI_EXTENDED_OP type 9046 9047------------------------------------------- 9048Summary of changes for this label: 08_10_00 9049 9050Parser/Interpreter integration: Eliminated the creation of 9051complete parse trees for ACPI tables and control methods. 9052Instead, parse subtrees are created and then deleted as soon as 9053they are processed (Either entered into the namespace or executed 9054by the interpreter). This reduces the use of dynamic kernel 9055memory significantly. (about 10X) 9056 9057Exception codes broken into classes and renumbered. Be sure to 9058recompile all code that includes acexcep.h. Hopefully we won't 9059have to renumber the codes again now that they are split into 9060classes (environment, programmer, AML code, ACPI table, and 9061internal). 9062 9063Fixed some additional alignment issues in the Resource Manager 9064subcomponent 9065 9066Implemented semaphore tracking in the AcpiExec utility, and fixed 9067several places where mutexes/semaphores were being unlocked 9068without a corresponding lock operation. There are no known 9069semaphore or mutex "leaks" at this time. 9070 9071Fixed the case where an ASL Return operator is used to return an 9072unnamed package. 9073 9074------------------------------------------- 9075Summary of changes for this label: 07_28_00 9076 9077Fixed a problem with the way addresses were calculated in 9078AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 9079manifested itself when a Field was created with WordAccess or 9080DwordAccess, but the field unit defined within the Field was less 9081 9082than a Word or Dword. 9083 9084Fixed a problem in AmlDumpOperands() module's loop to pull 9085operands off of the operand stack to display information. The 9086problem manifested itself as a TLB error on 64-bit systems when 9087accessing an operand stack with two or more operands. 9088 9089Fixed a problem with the PCI configuration space handlers where 9090context was getting confused between accesses. This required a 9091change to the generic address space handler and address space 9092setup definitions. Handlers now get both a global handler context 9093(this is the one passed in by the user when executing 9094AcpiInstallAddressSpaceHandler() and a specific region context 9095that is unique to each region (For example, the _ADR, _SEG and 9096_BBN values associated with a specific region). The generic 9097function definitions have changed to the following: 9098 9099typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 9100UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 9101*HandlerContext, // This used to be void *Context void 9102*RegionContext); // This is an additional parameter 9103 9104typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 9105RegionHandle, UINT32 Function, void *HandlerContext, void 9106**RegionContext); // This used to be **ReturnContext 9107 9108------------------------------------------- 9109Summary of changes for this label: 07_21_00 9110 9111Major file consolidation and rename. All files within the 9112interpreter have been renamed as well as most header files. This 9113was done to prevent collisions with existing files in the host 9114OSs -- filenames such as "config.h" and "global.h" seem to be 9115quite common. The VC project files have been updated. All 9116makefiles will require modification. 9117 9118The parser/interpreter integration continues in Phase 5 with the 9119implementation of a complete 2-pass parse (the AML is parsed 9120twice) for each table; This avoids the construction of a huge 9121parse tree and therefore reduces the amount of dynamic memory 9122required by the subsystem. Greater use of the parse object cache 9123means that performance is unaffected. 9124 9125Many comments from the two code reviews have been rolled in. 9126 9127The 64-bit alignment support is complete. 9128 9129------------------------------------------- 9130Summary of changes for this label: 06_30_00 9131 9132With a nod and a tip of the hat to the technology of yesteryear, 9133we've added support in the source code for 80 column output 9134devices. The code is now mostly constrained to 80 columns or 9135less to support environments and editors that 1) cannot display 9136or print more than 80 characters on a single line, and 2) cannot 9137disable line wrapping. 9138 9139A major restructuring of the namespace data structure has been 9140completed. The result is 1) cleaner and more 9141understandable/maintainable code, and 2) a significant reduction 9142in the dynamic memory requirement for each named ACPI object 9143(almost half). 9144 9145------------------------------------------- 9146Summary of changes for this label: 06_23_00 9147 9148Linux support has been added. In order to obtain approval to get 9149the ACPI CA subsystem into the Linux kernel, we've had to make 9150quite a few changes to the base subsystem that will affect all 9151users (all the changes are generic and OS- independent). The 9152effects of these global changes have been somewhat far reaching. 9153Files have been merged and/or renamed and interfaces have been 9154renamed. The major changes are described below. 9155 9156Osd* interfaces renamed to AcpiOs* to eliminate namespace 9157pollution/confusion within our target kernels. All OSD 9158interfaces must be modified to match the new naming convention. 9159 9160Files merged across the subsystem. A number of the smaller source 9161and header files have been merged to reduce the file count and 9162increase the density of the existing files. There are too many 9163to list here. In general, makefiles that call out individual 9164files will require rebuilding. 9165 9166Interpreter files renamed. All interpreter files now have the 9167prefix am* instead of ie* and is*. 9168 9169Header files renamed: The acapi.h file is now acpixf.h. The 9170acpiosd.h file is now acpiosxf.h. We are removing references to 9171the acronym "API" since it is somewhat windowsy. The new name is 9172"external interface" or xface or xf in the filenames.j 9173 9174 9175All manifest constants have been forced to upper case (some were 9176mixed case.) Also, the string "ACPI_" has been prepended to many 9177(not all) of the constants, typedefs, and structs. 9178 9179The globals "DebugLevel" and "DebugLayer" have been renamed 9180"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 9181 9182All other globals within the subsystem are now prefixed with 9183"AcpiGbl_" Internal procedures within the subsystem are now 9184prefixed with "Acpi" (with only a few exceptions). The original 9185two-letter abbreviation for the subcomponent remains after "Acpi" 9186- for example, CmCallocate became AcpiCmCallocate. 9187 9188Added a source code translation/conversion utility. Used to 9189generate the Linux source code, it can be modified to generate 9190other types of source as well. Can also be used to cleanup 9191existing source by removing extraneous spaces and blank lines. 9192Found in tools/acpisrc/* 9193 9194OsdUnMapMemory was renamed to OsdUnmapMemory and then 9195AcpiOsUnmapMemory. (UnMap became Unmap). 9196 9197A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 9198When set to one, this indicates that the caller wants to use the 9199 9200semaphore as a mutex, not a counting semaphore. ACPI CA uses 9201both types. However, implementers of this call may want to use 9202different OS primitives depending on the type of semaphore 9203requested. For example, some operating systems provide separate 9204 9205"mutex" and "semaphore" interfaces - where the mutex interface is 9206much faster because it doesn't have all the overhead of a full 9207semaphore implementation. 9208 9209Fixed a deadlock problem where a method that accesses the PCI 9210address space can block forever if it is the first access to the 9211space. 9212 9213------------------------------------------- 9214Summary of changes for this label: 06_02_00 9215 9216Support for environments that cannot handle unaligned data 9217accesses (e.g. firmware and OS environments devoid of alignment 9218handler technology namely SAL/EFI and the IA-64 Linux kernel) has 9219been added (via configurable macros) in these three areas: - 9220Transfer of data from the raw AML byte stream is done via byte 9221moves instead of word/dword/qword moves. - External objects are 9222aligned within the user buffer, including package elements (sub- 9223objects). - Conversion of name strings to UINT32 Acpi Names is now 9224done byte-wise. 9225 9226The Store operator was modified to mimic Microsoft's 9227implementation when storing to a Buffer Field. 9228 9229Added a check of the BM_STS bit before entering C3. 9230 9231The methods subdirectory has been obsoleted and removed. A new 9232file, cmeval.c subsumes the functionality. 9233 9234A 16-bit (DOS) version of AcpiExec has been developed. The 9235makefile is under the acpiexec directory. 9236