1---------------------------------------- 206 August 2010. Summary of changes for version 20100806: 3 41) ACPI CA Core Subsystem: 5 6Designed and implemented a new host interface to the _OSI support code. This 7will allow the host to dynamically add or remove multiple _OSI strings, as 8well as install an optional handler that is called for each _OSI invocation. 9Also added a new AML debugger command, 'osi' to display and modify the global 10_OSI string table, and test support in the AcpiExec utility. See the ACPICA 11reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 12New Functions: 13 AcpiInstallInterface - Add an _OSI string. 14 AcpiRemoveInterface - Delete an _OSI string. 15 AcpiInstallInterfaceHandler - Install optional _OSI handler. 16Obsolete Functions: 17 AcpiOsValidateInterface - no longer used. 18New Files: 19 source/components/utilities/utosi.c 20 21Re-introduced the support to enable multi-byte transfers for Embedded 22Controller (EC) operation regions. A reported problem was found to be a bug 23in the host OS, not in the multi-byte support. Previously, the maximum data 24size passed to the EC operation region handler was a single byte. There are 25often EC Fields larger than one byte that need to be transferred, and it is 26useful for the EC driver to lock these as a single transaction. This change 27enables single transfers larger than 8 bits. This effectively changes the 28access to the EC space from ByteAcc to AnyAcc, and will probably require 29changes to the host OS Embedded Controller driver to enable 16/32/64/256-bit 30transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 31 32Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 33prototype in acpiosxf.h had the output value pointer as a (void *). 34It should be a (UINT64 *). This may affect some host OSL code. 35 36Fixed a couple problems with the recently modified Linux makefiles for iASL 37and AcpiExec. These new makefiles place the generated object files in the 38local directory so that there can be no collisions between the files that are 39shared between them that are compiled with different options. 40 41Example Code and Data Size: These are the sizes for the OS-independent 42acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 43debug version of the code includes the debug output trace mechanism and has a 44much larger code and data size. 45 46 Previous Release: 47 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 48 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 49 Current Release: 50 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 51 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 52 532) iASL Compiler/Disassembler and Tools: 54 55iASL/Disassembler: Added a new option (-da, "disassemble all") to load the 56namespace from and disassemble an entire group of AML files. Useful for 57loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) and 58disassembling with one simple command. ACPICA BZ 865. Lin Ming. 59 60iASL: Allow multiple invocations of -e option. This change allows multiple 61uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 834. 62Lin Ming. 63 64---------------------------------------- 6502 July 2010. Summary of changes for version 20100702: 66 671) ACPI CA Core Subsystem: 68 69Implemented several updates to the recently added GPE reference count 70support. The model for "wake" GPEs is changing to give the host OS complete 71control of these GPEs. Eventually, the ACPICA core will not execute any _PRW 72methods, since the host already must execute them. Also, additional changes 73were made to help ensure that the reference counts are kept in proper 74synchronization with reality. Rafael J. Wysocki. 75 761) Ensure that GPEs are not enabled twice during initialization. 772) Ensure that GPE enable masks stay in sync with the reference count. 783) Do not inadvertently enable GPEs when writing GPE registers. 794) Remove the internal wake reference counter and add new AcpiGpeWakeup 80interface. This interface will set or clear individual GPEs for wakeup. 815) Remove GpeType argument from AcpiEnable and AcpiDisable. These interfaces 82are now used for "runtime" GPEs only. 83 84Changed the behavior of the GPE install/remove handler interfaces. The GPE is 85no longer disabled during this process, as it was found to cause problems on 86some machines. Rafael J. Wysocki. 87 88Reverted a change introduced in version 20100528 to enable Embedded 89Controller multi-byte transfers. This change was found to cause problems with 90Index Fields and possibly Bank Fields. It will be reintroduced when these 91problems have been resolved. 92 93Fixed a problem with references to Alias objects within Package Objects. A 94reference to an Alias within the definition of a Package was not always 95resolved properly. Aliases to objects like Processors, Thermal zones, etc. 96were resolved to the actual object instead of a reference to the object as it 97should be. Package objects are only allowed to contain integer, string, 98buffer, package, and reference objects. Redhat bugzilla 608648. 99 100Example Code and Data Size: These are the sizes for the OS-independent 101acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 102debug version of the code includes the debug output trace mechanism and has a 103much larger code and data size. 104 105 Previous Release: 106 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 107 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 108 Current Release: 109 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 110 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 111 1122) iASL Compiler/Disassembler and Tools: 113 114iASL: Implemented a new compiler subsystem to allow definition and 115compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. These 116are called "ACPI Data Tables", and the new compiler is the "Data Table 117Compiler". This compiler is intended to simplify the existing error-prone 118process of creating these tables for the BIOS, as well as allowing the 119disassembly, modification, recompilation, and override of existing ACPI data 120tables. See the iASL User Guide for detailed information. 121 122iASL: Implemented a new Template Generator option in support of the new Data 123Table Compiler. This option will create examples of all known ACPI tables 124that can be used as the basis for table development. See the iASL 125documentation and the -T option. 126 127Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 128Descriptor Table). 129 130Updated the Linux makefiles for iASL and AcpiExec to place the generated 131object files in the local directory so that there can be no collisions 132between the shared files between them that are generated with different 133options. 134 135Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use 136the #define __APPLE__ to enable this support. 137 138---------------------------------------- 13928 May 2010. Summary of changes for version 20100528: 140 141Note: The ACPI 4.0a specification was released on April 5, 2010 and is 142available at www.acpi.info. This is primarily an errata release. 143 1441) ACPI CA Core Subsystem: 145 146Undefined ACPI tables: We are looking for the definitions for the following 147ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 148 149Implemented support to enable multi-byte transfers for Embedded Controller 150(EC) operation regions. Previously, the maximum data size passed to the EC 151operation region handler was a single byte. There are often EC Fields larger 152than one byte that need to be transferred, and it is useful for the EC driver 153to lock these as a single transaction. This change enables single transfers 154larger than 8 bits. This effectively changes the access to the EC space from 155ByteAcc to AnyAcc, and will probably require changes to the host OS Embedded 156Controller driver to enable 16/32/64/256-bit transfers in addition to 8-bit 157transfers. Alexey Starikovskiy, Lin Ming 158 159Implemented a performance enhancement for namespace search and access. This 160change enhances the performance of namespace searches and walks by adding a 161backpointer to the parent in each namespace node. On large namespaces, this 162change can improve overall ACPI performance by up to 9X. Adding a pointer to 163each namespace node increases the overall size of the internal namespace by 164about 5%, since each namespace entry usually consists of both a namespace 165node and an ACPI operand object. However, this is the first growth of the 166namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 167 168Implemented a performance optimization that reduces the number of namespace 169walks. On control method exit, only walk the namespace if the method is known 170to have created namespace objects outside of its local scope. Previously, the 171entire namespace was traversed on each control method exit. This change can 172improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob Moore. 173 174Added support to truncate I/O addresses to 16 bits for Windows compatibility. 175Some ASL code has been seen in the field that inadvertently has bits set 176above bit 15. This feature is optional and is enabled if the BIOS requests 177any Windows OSI strings. It can also be enabled by the host OS. Matthew 178Garrett, Bob Moore. 179 180Added support to limit the maximum time for the ASL Sleep() operator. To 181prevent accidental deep sleeps, limit the maximum time that Sleep() will 182actually sleep. Configurable, the default maximum is two seconds. ACPICA 183bugzilla 854. 184 185Added run-time validation support for the _WDG and_WED Microsoft predefined 186methods. These objects are defined by "Windows Instrumentation", and are not 187part of the ACPI spec. ACPICA BZ 860. 188 189Expanded all statistic counters used during namespace and device 190initialization from 16 to 32 bits in order to support very large namespaces. 191 192Replaced all instances of %d in printf format specifiers with %u since nearly 193all integers in ACPICA are unsigned. 194 195Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly returned 196as AE_NO_HANDLER. 197 198Example Code and Data Size: These are the sizes for the OS-independent 199acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 200debug version of the code includes the debug output trace mechanism and has a 201much larger code and data size. 202 203 Previous Release: 204 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 205 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 206 Current Release: 207 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 208 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 209 2102) iASL Compiler/Disassembler and Tools: 211 212iASL: Added compiler support for the _WDG and_WED Microsoft predefined 213methods. These objects are defined by "Windows Instrumentation", and are not 214part of the ACPI spec. ACPICA BZ 860. 215 216AcpiExec: added option to disable the memory tracking mechanism. The -dt 217option will disable the tracking mechanism, which improves performance 218considerably. 219 220AcpiExec: Restructured the command line options into -d (disable) and -e 221(enable) options. 222 223---------------------------------------- 22428 April 2010. Summary of changes for version 20100428: 225 2261) ACPI CA Core Subsystem: 227 228Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 229including FADT-based and GPE Block Devices, execute any _PRW methods in the 230new table, and process any _Lxx/_Exx GPE methods in the new table. Any 231runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 232immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 233Devices. Provides compatibility with other ACPI implementations. Two new 234files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob Moore. 235 236Fixed a regression introduced in version 20100331 within the table manager 237where initial table loading could fail. This was introduced in the fix for 238AcpiReallocateRootTable. Also, renamed some of fields in the table manager 239data structures to clarify their meaning and use. 240 241Fixed a possible allocation overrun during internal object copy in 242AcpiUtCopySimpleObject. The original code did not correctly handle the case 243where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 847. 244 245Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 246possible access beyond end-of-allocation. Also, now fully validate descriptor 247(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 248 249Example Code and Data Size: These are the sizes for the OS-independent 250acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 251debug version of the code includes the debug output trace mechanism and has a 252much larger code and data size. 253 254 Previous Release: 255 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 256 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 257 Current Release: 258 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 259 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 260 2612) iASL Compiler/Disassembler and Tools: 262 263iASL: Implemented Min/Max/Len/Gran validation for address resource 264descriptors. This change implements validation for the address fields that 265are common to all address-type resource descriptors. These checks are 266implemented: Checks for valid Min/Max, length within the Min/Max window, 267valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per 268table 6-40 in the ACPI 4.0a specification. Also split the large aslrestype1.c 269and aslrestype2.c files into five new files. ACPICA BZ 840. 270 271iASL: Added support for the _Wxx predefined names. This support was missing 272and these names were not recognized by the compiler as valid predefined 273names. ACPICA BZ 851. 274 275iASL: Added an error for all predefined names that are defined to return no 276value and thus must be implemented as Control Methods. These include all of 277the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 278names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 279 280iASL: Implemented the -ts option to emit hex AML data in ASL format, as an 281ASL Buffer. Allows ACPI tables to be easily included within ASL files, to be 282dynamically loaded via the Load() operator. Also cleaned up output for the - 283ta and -tc options. ACPICA BZ 853. 284 285Tests: Added a new file with examples of extended iASL error checking. 286Demonstrates the advanced error checking ability of the iASL compiler. 287Available at tests/misc/badcode.asl. 288 289---------------------------------------- 29031 March 2010. Summary of changes for version 20100331: 291 2921) ACPI CA Core Subsystem: 293 294Completed a major update for the GPE support in order to improve support for 295shared GPEs and to simplify both host OS and ACPICA code. Added a reference 296count mechanism to support shared GPEs that require multiple device drivers. 297Several external interfaces have changed. One external interface has been 298removed. One new external interface was added. Most of the GPE external 299interfaces now use the GPE spinlock instead of the events mutex (and the 300Flags parameter for many GPE interfaces has been removed.) See the updated 301ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, Rafael 302Wysocki. ACPICA BZ 831. 303 304Changed: 305 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 306Removed: 307 AcpiSetGpeType 308New: 309 AcpiSetGpe 310 311Implemented write support for DataTable operation regions. These regions are 312defined via the DataTableRegion() operator. Previously, only read support was 313implemented. The ACPI specification allows DataTableRegions to be read/write, 314however. 315 316Implemented a new subsystem option to force a copy of the DSDT to local 317memory. Optionally copy the entire DSDT to local memory (instead of simply 318mapping it.) There are some (albeit very rare) BIOSs that corrupt or replace 319the original DSDT, creating the need for this option. Default is FALSE, do 320not copy the DSDT. 321 322Implemented detection of a corrupted or replaced DSDT. This change adds 323support to detect a DSDT that has been corrupted and/or replaced from outside 324the OS (by firmware). This is typically catastrophic for the system, but has 325been seen on some machines. Once this problem has been detected, the DSDT 326copy option can be enabled via system configuration. Lin Ming, Bob Moore. 327 328Fixed two problems with AcpiReallocateRootTable during the root table copy. 329When copying the root table to the new allocation, the length used was 330incorrect. The new size was used instead of the current table size, meaning 331too much data was copied. Also, the count of available slots for ACPI tables 332was not set correctly. Alexey Starikovskiy, Bob Moore. 333 334Example Code and Data Size: These are the sizes for the OS-independent 335acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 336debug version of the code includes the debug output trace mechanism and has a 337much larger code and data size. 338 339 Previous Release: 340 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 341 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 342 Current Release: 343 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 344 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 345 3462) iASL Compiler/Disassembler and Tools: 347 348iASL: Implement limited typechecking for values returned from predefined 349control methods. The type of any returned static (unnamed) object is now 350validated. For example, Return(1). ACPICA BZ 786. 351 352iASL: Fixed a predefined name object verification regression. Fixes a problem 353introduced in version 20100304. An error is incorrectly generated if a 354predefined name is declared as a static named object with a value defined 355using the keywords "Zero", "One", or "Ones". Lin Ming. 356 357iASL: Added Windows 7 support for the -g option (get local ACPI tables) by 358reducing the requested registry access rights. ACPICA BZ 842. 359 360Disassembler: fixed a possible fault when generating External() statements. 361Introduced in commit ae7d6fd: Properly handle externals with parent-prefix 362(carat). Fixes a string length allocation calculation. Lin Ming. 363 364---------------------------------------- 36504 March 2010. Summary of changes for version 20100304: 366 3671) ACPI CA Core Subsystem: 368 369Fixed a possible problem with the AML Mutex handling function 370AcpiExReleaseMutex where the function could fault under the very rare 371condition when the interpreter has blocked, the interpreter lock is released, 372the interpreter is then reentered via the same thread, and attempts to 373acquire an AML mutex that was previously acquired. FreeBSD report 140979. Lin 374Ming. 375 376Implemented additional configuration support for the AML "Debug Object". 377Output from the debug object can now be enabled via a global variable, 378AcpiGbl_EnableAmlDebugObject. This will assist with remote machine debugging. 379This debug output is now available in the release version of ACPICA instead 380of just the debug version. Also, the entire debug output module can now be 381configured out of the ACPICA build if desired. One new file added, 382executer/exdebug.c. Lin Ming, Bob Moore. 383 384Added header support for the ACPI MCHI table (Management Controller Host 385Interface Table). This table was added in ACPI 4.0, but the defining document 386has only recently become available. 387 388Standardized output of integer values for ACPICA warnings/errors. Always use 3890x prefix for hex output, always use %u for unsigned integer decimal output. 390Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400 391invocations.) These invocations were converted from the original 392ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 393 394Example Code and Data Size: These are the sizes for the OS-independent 395acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 396debug version of the code includes the debug output trace mechanism and has a 397much larger code and data size. 398 399 Previous Release: 400 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 401 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 402 Current Release: 403 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 404 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 405 4062) iASL Compiler/Disassembler and Tools: 407 408iASL: Implemented typechecking support for static (non-control method) 409predefined named objects that are declared with the Name() operator. For 410example, the type of this object is now validated to be of type Integer: 411Name(_BBN, 1). This change migrates the compiler to using the core predefined 412name table instead of maintaining a local version. Added a new file, 413aslpredef.c. ACPICA BZ 832. 414 415Disassembler: Added support for the ACPI 4.0 MCHI table. 416 417---------------------------------------- 41821 January 2010. Summary of changes for version 20100121: 419 4201) ACPI CA Core Subsystem: 421 422Added the 2010 copyright to all module headers and signons. This affects 423virtually every file in the ACPICA core subsystem, the iASL compiler, the 424tools/utilities, and the test suites. 425 426Implemented a change to the AcpiGetDevices interface to eliminate unnecessary 427invocations of the _STA method. In the case where a specific _HID is 428requested, do not run _STA until a _HID match is found. This eliminates 429potentially dozens of _STA calls during a search for a particular device/HID, 430which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 431 432Implemented an additional repair for predefined method return values. Attempt 433to repair unexpected NULL elements within returned Package objects. Create an 434Integer of value zero, a NULL String, or a zero-length Buffer as appropriate. 435ACPICA BZ 818. Lin Ming, Bob Moore. 436 437Removed the obsolete ACPI_INTEGER data type. This type was introduced as the 438code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 (with 43964-bit AML integers). It is now obsolete and this change removes it from the 440ACPICA code base, replaced by UINT64. The original typedef has been retained 441for now for compatibility with existing device driver code. ACPICA BZ 824. 442 443Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in 444the parse tree object. 445 446Added additional warning options for the gcc-4 generation. Updated the source 447accordingly. This includes some code restructuring to eliminate unreachable 448code, elimination of some gotos, elimination of unused return values, some 449additional casting, and removal of redundant declarations. 450 451Example Code and Data Size: These are the sizes for the OS-independent 452acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 453debug version of the code includes the debug output trace mechanism and has a 454much larger code and data size. 455 456 Previous Release: 457 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 458 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 459 Current Release: 460 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 461 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 462 4632) iASL Compiler/Disassembler and Tools: 464 465No functional changes for this release. 466 467---------------------------------------- 46814 December 2009. Summary of changes for version 20091214: 469 4701) ACPI CA Core Subsystem: 471 472Enhanced automatic data type conversions for predefined name repairs. This 473change expands the automatic repairs/conversions for predefined name return 474values to make Integers, Strings, and Buffers fully interchangeable. Also, a 475Buffer can be converted to a Package of Integers if necessary. The nsrepair.c 476module was completely restructured. Lin Ming, Bob Moore. 477 478Implemented automatic removal of null package elements during predefined name 479repairs. This change will automatically remove embedded and trailing NULL 480package elements from returned package objects that are defined to contain a 481variable number of sub-packages. The driver is then presented with a package 482with no null elements to deal with. ACPICA BZ 819. 483 484Implemented a repair for the predefined _FDE and _GTM names. The expected 485return value for both names is a Buffer of 5 DWORDs. This repair fixes two 486possible problems (both seen in the field), where a package of integers is 487returned, or a buffer of BYTEs is returned. With assistance from Jung-uk Kim. 488 489Implemented additional module-level code support. This change will properly 490execute module-level code that is not at the root of the namespace (under a 491Device object, etc.). Now executes the code within the current scope instead 492of the root. ACPICA BZ 762. Lin Ming. 493 494Fixed possible mutex acquisition errors when running _REG methods. Fixes a 495problem where mutex errors can occur when running a _REG method that is in 496the same scope as a method-defined operation region or an operation region 497under a module-level IF block. This type of code is rare, so the problem has 498not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 499 500Fixed a possible memory leak during module-level code execution. An object 501could be leaked for each block of executed module-level code if the 502interpreter slack mode is enabled This change deletes any implicitly returned 503object from the module-level code block. Lin Ming. 504 505Removed messages for successful predefined repair(s). The repair mechanism 506was considered too wordy. Now, messages are only unconditionally emitted if 507the return object cannot be repaired. Existing messages for successful 508repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827. 509 510Example Code and Data Size: These are the sizes for the OS-independent 511acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 512debug version of the code includes the debug output trace mechanism and has a 513much larger code and data size. 514 515 Previous Release: 516 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 517 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 518 Current Release: 519 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 520 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 521 5222) iASL Compiler/Disassembler and Tools: 523 524iASL: Fixed a regression introduced in 20091112 where intermediate .SRC files 525were no longer automatically removed at the termination of the compile. 526 527acpiexec: Implemented the -f option to specify default region fill value. 528This option specifies the value used to initialize buffers that simulate 529operation regions. Default value is zero. Useful for debugging problems that 530depend on a specific initial value for a region or field. 531 532---------------------------------------- 53312 November 2009. Summary of changes for version 20091112: 534 5351) ACPI CA Core Subsystem: 536 537Implemented a post-order callback to AcpiWalkNamespace. The existing 538interface only has a pre-order callback. This change adds an additional 539parameter for a post-order callback which will be more useful for bus scans. 540ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 541 542Modified the behavior of the operation region memory mapping cache for 543SystemMemory. Ensure that the memory mappings created for operation regions 544do not cross 4K page boundaries. Crossing a page boundary while mapping 545regions can cause kernel warnings on some hosts if the pages have different 546attributes. Such regions are probably BIOS bugs, and this is the workaround. 547Linux BZ 14445. Lin Ming. 548 549Implemented an automatic repair for predefined methods that must return 550sorted lists. This change will repair (by sorting) packages returned by _ALR, 551_PSS, and _TSS. Drivers can now assume that the packages are correctly sorted 552and do not contain NULL package elements. Adds one new file, 553namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 554 555Fixed a possible fault during predefined name validation if a return Package 556object contains NULL elements. Also adds a warning if a NULL element is 557followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement may 558include repair or removal of all such NULL elements where possible. 559 560Implemented additional module-level executable AML code support. This change 561will execute module-level code that is not at the root of the namespace 562(under a Device object, etc.) at table load time. Module-level executable AML 563code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 564 565Implemented a new internal function to create Integer objects. This function 566simplifies miscellaneous object creation code. ACPICA BZ 823. 567 568Reduced the severity of predefined repair messages, Warning to Info. Since 569the object was successfully repaired, a warning is too severe. Reduced to an 570info message for now. These messages may eventually be changed to debug-only. 571ACPICA BZ 812. 572 573Example Code and Data Size: These are the sizes for the OS-independent 574acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 575debug version of the code includes the debug output trace mechanism and has a 576much larger code and data size. 577 578 Previous Release: 579 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 580 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 581 Current Release: 582 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 583 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 584 5852) iASL Compiler/Disassembler and Tools: 586 587iASL: Implemented Switch() with While(1) so that Break works correctly. This 588change correctly implements the Switch operator with a surrounding While(1) 589so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 590 591iASL: Added a message if a package initializer list is shorter than package 592length. Adds a new remark for a Package() declaration if an initializer list 593exists, but is shorter than the declared length of the package. Although 594technically legal, this is probably a coding error and it is seen in the 595field. ACPICA BZ 815. Lin Ming, Bob Moore. 596 597iASL: Fixed a problem where the compiler could fault after the maximum number 598of errors was reached (200). 599 600acpixtract: Fixed a possible warning for pointer cast if the compiler warning 601level set very high. 602 603---------------------------------------- 60413 October 2009. Summary of changes for version 20091013: 605 6061) ACPI CA Core Subsystem: 607 608Fixed a problem where an Operation Region _REG method could be executed more 609than once. If a custom address space handler is installed by the host before 610the "initialize operation regions" phase of the ACPICA initialization, any 611_REG methods for that address space could be executed twice. This change 612fixes the problem. ACPICA BZ 427. Lin Ming. 613 614Fixed a possible memory leak for the Scope() ASL operator. When the exact 615invocation of "Scope(\)" is executed (change scope to root), one internal 616operand object was leaked. Lin Ming. 617 618Implemented a run-time repair for the _MAT predefined method. If the _MAT 619return value is defined as a Field object in the AML, and the field 620size is less than or equal to the default width of an integer (32 or 64),_MAT 621can incorrectly return an Integer instead of a Buffer. ACPICA now 622automatically repairs this problem. ACPICA BZ 810. 623 624Implemented a run-time repair for the _BIF and _BIX predefined methods. The 625"OEM Information" field is often incorrectly returned as an Integer with 626value zero if the field is not supported by the platform. This is due to an 627ambiguity in the ACPI specification. The field should always be a string. 628ACPICA now automatically repairs this problem by returning a NULL string 629within the returned Package. ACPICA BZ 807. 630 631Example Code and Data Size: These are the sizes for the OS-independent 632acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 633debug version of the code includes the debug output trace mechanism and has a 634much larger code and data size. 635 636 Previous Release: 637 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 638 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 639 Current Release: 640 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 641 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 642 6432) iASL Compiler/Disassembler and Tools: 644 645Disassembler: Fixed a problem where references to external symbols that 646contained one or more parent-prefixes (carats) were not handled correctly, 647possibly causing a fault. ACPICA BZ 806. Lin Ming. 648 649Disassembler: Restructured the code so that all functions that handle 650external symbols are in a single module. One new file is added, 651common/dmextern.c. 652 653AML Debugger: Added a max count argument for the Batch command (which 654executes multiple predefined methods within the namespace.) 655 656iASL: Updated the compiler documentation (User Reference.) Available at 657http://www.acpica.org/documentation/. ACPICA BZ 750. 658 659AcpiXtract: Updated for Lint and other formatting changes. Close all open 660files. 661 662---------------------------------------- 66303 September 2009. Summary of changes for version 20090903: 664 6651) ACPI CA Core Subsystem: 666 667For Windows Vista compatibility, added the automatic execution of an _INI 668method located at the namespace root (\_INI). This method is executed at 669table load time. This support is in addition to the automatic execution of 670\_SB._INI. Lin Ming. 671 672Fixed a possible memory leak in the interpreter for AML package objects if 673the package initializer list is longer than the defined size of the package. 674This apparently can only happen if the BIOS changes the package size on the 675fly (seen in a _PSS object), as ASL compilers do not allow this. The 676interpreter will truncate the package to the defined size (and issue an error 677message), but previously could leave the extra objects undeleted if they were 678pre-created during the argument processing (such is the case if the package 679consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 680 681Fixed a problem seen when a Buffer or String is stored to itself via ASL. 682This has been reported in the field. Previously, ACPICA would zero out the 683buffer/string. Now, the operation is treated as a noop. Provides Windows 684compatibility. ACPICA BZ 803. Lin Ming. 685 686Removed an extraneous error message for ASL constructs of the form 687Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements 688are seen in many BIOSs and are once again treated as NOOPs and no error is 689emitted when they are encountered. ACPICA BZ 785. 690 691Fixed an extraneous warning message if a _DSM reserved method returns a 692Package object. _DSM can return any type of object, so validation on the 693return type cannot be performed. ACPICA BZ 802. 694 695Example Code and Data Size: These are the sizes for the OS-independent 696acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 697debug version of the code includes the debug output trace mechanism and has a 698much larger code and data size. 699 700 Previous Release: 701 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 702 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 703 Current Release: 704 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 705 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 706 7072) iASL Compiler/Disassembler and Tools: 708 709iASL: Fixed a problem with the use of the Alias operator and Resource 710Templates. The correct alias is now constructed and no error is emitted. 711ACPICA BZ 738. 712 713iASL: Implemented the -I option to specify additional search directories for 714include files. Allows multiple additional search paths for include files. 715Directories are searched in the order specified on the command line (after 716the local directory is searched.) ACPICA BZ 800. 717 718iASL: Fixed a problem where the full pathname for include files was not 719emitted for warnings/errors. This caused the IDE support to not work 720properly. ACPICA BZ 765. 721 722iASL: Implemented the -@ option to specify a Windows-style response file 723containing additional command line options. ACPICA BZ 801. 724 725AcpiExec: Added support to load multiple AML files simultaneously (such as a 726DSDT and multiple SSDTs). Also added support for wildcards within the AML 727pathname. These features allow all machine tables to be easily loaded and 728debugged together. ACPICA BZ 804. 729 730Disassembler: Added missing support for disassembly of HEST table Error Bank 731subtables. 732 733---------------------------------------- 73430 July 2009. Summary of changes for version 20090730: 735 736The ACPI 4.0 implementation for ACPICA is complete with this release. 737 7381) ACPI CA Core Subsystem: 739 740ACPI 4.0: Added header file support for all new and changed ACPI tables. 741Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new 742for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT, 743EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There 744have been some ACPI 4.0 changes to other existing tables. Split the large 745actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 746 747ACPI 4.0: Implemented predefined name validation for all new names. There are 74831 new names in ACPI 4.0. The predefined validation module was split into two 749files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 750 751Implemented support for so-called "module-level executable code". This is 752executable AML code that exists outside of any control method and is intended 753to be executed at table load time. Although illegal since ACPI 2.0, this type 754of code still exists and is apparently still being created. Blocks of this 755code are now detected and executed as intended. Currently, the code blocks 756must exist under either an If, Else, or While construct; these are the 757typical cases seen in the field. ACPICA BZ 762. Lin Ming. 758 759Implemented an automatic dynamic repair for predefined names that return 760nested Package objects. This applies to predefined names that are defined to 761return a variable-length Package of sub-packages. If the number of sub- 762packages is one, BIOS code is occasionally seen that creates a simple single 763package with no sub-packages. This code attempts to fix the problem by 764wrapping a new package object around the existing package. These methods can 765be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ 766790. 767 768Fixed a regression introduced in 20090625 for the AcpiGetDevices interface. 769The _HID/_CID matching was broken and no longer matched IDs correctly. ACPICA 770BZ 793. 771 772Fixed a problem with AcpiReset where the reset would silently fail if the 773register was one of the protected I/O ports. AcpiReset now bypasses the port 774validation mechanism. This may eventually be driven into the AcpiRead/Write 775interfaces. 776 777Fixed a regression related to the recent update of the AcpiRead/Write 778interfaces. A sleep/suspend could fail if the optional PM2 Control register 779does not exist during an attempt to write the Bus Master Arbitration bit. 780(However, some hosts already delete the code that writes this bit, and the 781code may in fact be obsolete at this date.) ACPICA BZ 799. 782 783Fixed a problem where AcpiTerminate could fault if inadvertently called twice 784in succession. ACPICA BZ 795. 785 786Example Code and Data Size: These are the sizes for the OS-independent 787acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 788debug version of the code includes the debug output trace mechanism and has a 789much larger code and data size. 790 791 Previous Release: 792 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 793 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 794 Current Release: 795 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 796 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 797 7982) iASL Compiler/Disassembler and Tools: 799 800ACPI 4.0: Implemented disassembler support for all new ACPI tables and 801changes to existing tables. ACPICA BZ 775. 802 803---------------------------------------- 80425 June 2009. Summary of changes for version 20090625: 805 806The ACPI 4.0 Specification was released on June 16 and is available at 807www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 808continue for the next few releases. 809 8101) ACPI CA Core Subsystem: 811 812ACPI 4.0: Implemented interpreter support for the IPMI operation region 813address space. Includes support for bi-directional data buffers and an IPMI 814address space handler (to be installed by an IPMI device driver.) ACPICA BZ 815773. Lin Ming. 816 817ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes 818support in both the header files and the disassembler. 819 820Completed a major update for the AcpiGetObjectInfo external interface. 821Changes include: 822 - Support for variable, unlimited length HID, UID, and CID strings. 823 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.) 824 - Call the _SxW power methods on behalf of a device object. 825 - Determine if a device is a PCI root bridge. 826 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 827These changes will require an update to all callers of this interface. See 828the updated ACPICA Programmer Reference for details. One new source file has 829been added - utilities/utids.c. ACPICA BZ 368, 780. 830 831Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 832transfers. The Value parameter has been extended from 32 bits to 64 bits in 833order to support new ACPI 4.0 tables. These changes will require an update to 834all callers of these interfaces. See the ACPICA Programmer Reference for 835details. ACPICA BZ 768. 836 837Fixed several problems with AcpiAttachData. The handler was not invoked when 838the host node was deleted. The data sub-object was not automatically deleted 839when the host node was deleted. The interface to the handler had an unused 840parameter, this was removed. ACPICA BZ 778. 841 842Enhanced the function that dumps ACPI table headers. All non-printable 843characters in the string fields are now replaced with '?' (Signature, OemId, 844OemTableId, and CompilerId.) ACPI tables with non-printable characters in 845these fields are occasionally seen in the field. ACPICA BZ 788. 846 847Fixed a problem with predefined method repair code where the code that 848attempts to repair/convert an object of incorrect type is only executed on 849the first time the predefined method is called. The mechanism that disables 850warnings on subsequent calls was interfering with the repair mechanism. 851ACPICA BZ 781. 852 853Fixed a possible memory leak in the predefined validation/repair code when a 854buffer is automatically converted to an expected string object. 855 856Removed obsolete 16-bit files from the distribution and from the current git 857tree head. ACPICA BZ 776. 858 859Example Code and Data Size: These are the sizes for the OS-independent 860acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 861debug version of the code includes the debug output trace mechanism and has a 862much larger code and data size. 863 864 Previous Release: 865 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 866 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 867 Current Release: 868 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 869 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 870 8712) iASL Compiler/Disassembler and Tools: 872 873ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 874operation region keyword. ACPICA BZ 771, 772. Lin Ming. 875 876ACPI 4.0: iASL - implemented compile-time validation support for all new 877predefined names and control methods (31 total). ACPICA BZ 769. 878 879---------------------------------------- 88021 May 2009. Summary of changes for version 20090521: 881 8821) ACPI CA Core Subsystem: 883 884Disabled the preservation of the SCI enable bit in the PM1 control register. 885The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be 886a "preserved" bit - "OSPM always preserves this bit position", section 8874.7.3.2.1. However, some machines fail if this bit is in fact preserved 888because the bit needs to be explicitly set by the OS as a workaround. No 889machines fail if the bit is not preserved. Therefore, ACPICA no longer 890attempts to preserve this bit. 891 892Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 893incorrectly formed _PRT package could cause a fault. Added validation to 894ensure that each package element is actually a sub-package. 895 896Implemented a new interface to install or override a single control method, 897AcpiInstallMethod. This interface is useful when debugging in order to repair 898an existing method or to install a missing method without having to override 899the entire ACPI table. See the ACPICA Programmer Reference for use and 900examples. Lin Ming, Bob Moore. 901 902Fixed several reference count issues with the DdbHandle object that is 903created from a Load or LoadTable operator. Prevent premature deletion of the 904object. Also, mark the object as invalid once the table has been unloaded. 905This is needed because the handle itself may not be deleted after the table 906unload, depending on whether it has been stored in a named object by the 907caller. Lin Ming. 908 909Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 910mutexes of the same sync level are acquired but then not released in strict 911opposite order, the internally maintained Current Sync Level becomes confused 912and can cause subsequent execution errors. ACPICA BZ 471. 913 914Changed the allowable release order for ASL mutex objects. The ACPI 4.0 915specification has been changed to make the SyncLevel for mutex objects more 916useful. When releasing a mutex, the SyncLevel of the mutex must now be the 917same as the current sync level. This makes more sense than the previous rule 918(SyncLevel less than or equal). This change updates the code to match the 919specification. 920 921Fixed a problem with the local version of the AcpiOsPurgeCache function. The 922(local) cache must be locked during all cache object deletions. Andrew 923Baumann. 924 925Updated the Load operator to use operation region interfaces. This replaces 926direct memory mapping with region access calls. Now, all region accesses go 927through the installed region handler as they should. 928 929Simplified and optimized the NsGetNextNode function. Reduced parameter count 930and reduced code for this frequently used function. 931 932Example Code and Data Size: These are the sizes for the OS-independent 933acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 934debug version of the code includes the debug output trace mechanism and has a 935much larger code and data size. 936 937 Previous Release: 938 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 939 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 940 Current Release: 941 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 942 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 943 9442) iASL Compiler/Disassembler and Tools: 945 946Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems 947with sub-table disassembly and handling invalid sub-tables. Attempt recovery 948after an invalid sub-table ID. 949 950---------------------------------------- 95122 April 2009. Summary of changes for version 20090422: 952 9531) ACPI CA Core Subsystem: 954 955Fixed a compatibility issue with the recently released I/O port protection 956mechanism. For windows compatibility, 1) On a port protection violation, 957simply ignore the request and do not return an exception (allow the control 958method to continue execution.) 2) If only part of the request overlaps a 959protected port, read/write the individual ports that are not protected. Linux 960BZ 13036. Lin Ming 961 962Enhanced the execution of the ASL/AML BreakPoint operator so that it actually 963breaks into the AML debugger if the debugger is present. This matches the 964ACPI-defined behavior. 965 966Fixed several possible warnings related to the use of the configurable 967ACPI_THREAD_ID. This type can now be configured as either an integer or a 968pointer with no warnings. Also fixes several warnings in printf-like 969statements for the 64-bit build when the type is configured as a pointer. 970ACPICA BZ 766, 767. 971 972Fixed a number of possible warnings when compiling with gcc 4+ (depending on 973warning options.) Examples include printf formats, aliasing, unused globals, 974missing prototypes, missing switch default statements, use of non-ANSI 975library functions, use of non-ANSI constructs. See generate/unix/Makefile for 976a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 977 978Example Code and Data Size: These are the sizes for the OS-independent 979acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 980debug version of the code includes the debug output trace mechanism and has a 981much larger code and data size. 982 983 Previous Release: 984 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 985 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 986 Current Release: 987 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 988 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 989 9902) iASL Compiler/Disassembler and Tools: 991 992iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on 993the 64-bit build. 994 995iASL: Fixed a problem where the Unix/Linux versions of the compiler could not 996correctly digest Windows/DOS formatted files (with CR/LF). 997 998iASL: Added a new option for "quiet mode" (-va) that produces only the 999compilation summary, not individual errors and warnings. Useful for large 1000batch compilations. 1001 1002AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex 1003timeout that can be used to detect hang conditions during execution of AML 1004code (includes both internal semaphores and AML-defined mutexes and events.) 1005 1006Added new makefiles for the generation of acpica in a generic unix-like 1007environment. These makefiles are intended to generate the acpica tools and 1008utilities from the original acpica git source tree structure. 1009 1010Test Suites: Updated and cleaned up the documentation files. Updated the 1011copyrights to 2009, affecting all source files. Use the new version of iASL 1012with quiet mode. Increased the number of available semaphores in the Windows 1013OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added 1014an alternate implementation of the semaphore timeout to allow aslts to 1015execute fully on Cygwin. 1016 1017---------------------------------------- 101820 March 2009. Summary of changes for version 20090320: 1019 10201) ACPI CA Core Subsystem: 1021 1022Fixed a possible race condition between AcpiWalkNamespace and dynamic table 1023unloads. Added a reader/writer locking mechanism to allow multiple concurrent 1024namespace walks (readers), but block a dynamic table unload until it can gain 1025exclusive write access to the namespace. This fixes a problem where a table 1026unload could (possibly catastrophically) delete the portion of the namespace 1027that is currently being examined by a walk. Adds a new file, utlock.c, that 1028implements the reader/writer lock mechanism. ACPICA BZ 749. 1029 1030Fixed a regression introduced in version 20090220 where a change to the FADT 1031handling could cause the ACPICA subsystem to access non-existent I/O ports. 1032 1033Modified the handling of FADT register and table (FACS/DSDT) addresses. The 1034FADT can contain both 32-bit and 64-bit versions of these addresses. 1035Previously, the 64-bit versions were favored, meaning that if both 32 and 64 1036versions were valid, but not equal, the 64-bit version was used. This was 1037found to cause some machines to fail. Now, in this case, the 32-bit version 1038is used instead. This now matches the Windows behavior. 1039 1040Implemented a new mechanism to protect certain I/O ports. Provides Microsoft 1041compatibility and protects the standard PC I/O ports from access via AML 1042code. Adds a new file, hwvalid.c 1043 1044Fixed a possible extraneous warning message from the FADT support. The 1045message warns of a 32/64 length mismatch between the legacy and GAS 1046definitions for a register. 1047 1048Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is 1049made obsolete by the port protection mechanism above. It was previously used 1050to validate the entire address range of an operation region, which could be 1051incorrect if the range included illegal ports, but fields within the 1052operation region did not actually access those ports. Validation is now 1053performed on a per-field basis instead of the entire region. 1054 1055Modified the handling of the PM1 Status Register ignored bit (bit 11.) 1056Ignored bits must be "preserved" according to the ACPI spec. Usually, this 1057means a read/modify/write when writing to the register. However, for status 1058registers, writing a one means clear the event. Writing a zero means preserve 1059the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec, 1060and the ACPICA code now simply always writes a zero to the ignored bit. 1061 1062Modified the handling of ignored bits for the PM1 A/B Control Registers. As 1063per the ACPI specification, for the control registers, preserve 1064(read/modify/write) all bits that are defined as either reserved or ignored. 1065 1066Updated the handling of write-only bits in the PM1 A/B Control Registers. 1067When reading the register, zero the write-only bits as per the ACPI spec. 1068ACPICA BZ 443. Lin Ming. 1069 1070Removed "Linux" from the list of supported _OSI strings. Linux no longer 1071wants to reply true to this request. The Windows strings are the only paths 1072through the AML that are tested and known to work properly. 1073 1074 Previous Release: 1075 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 1076 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 1077 Current Release: 1078 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 1079 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 1080 10812) iASL Compiler/Disassembler and Tools: 1082 1083Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and 1084aetables.c 1085 1086---------------------------------------- 108720 February 2009. Summary of changes for version 20090220: 1088 10891) ACPI CA Core Subsystem: 1090 1091Optimized the ACPI register locking. Removed locking for reads from the ACPI 1092bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is 1093not required when reading the single-bit registers. The 1094AcpiGetRegisterUnlocked function is no longer needed and has been removed. 1095This will improve performance for reads on these registers. ACPICA BZ 760. 1096 1097Fixed the parameter validation for AcpiRead/Write. Now return 1098AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if 1099the register has an address of zero. Previously, these cases simply returned 1100AE_OK. For optional registers such as PM1B status/enable/control, the caller 1101should check for a valid register address before calling. ACPICA BZ 748. 1102 1103Renamed the external ACPI bit register access functions. Renamed 1104AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 1105functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister. 1106Also, restructured the code for these functions by simplifying the code path 1107and condensing duplicate code to reduce code size. 1108 1109Added new functions to transparently handle the possibly split PM1 A/B 1110registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions 1111now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ 1112746. 1113 1114Added a function to handle the PM1 control registers, AcpiHwWritePm1Control. 1115This function writes both of the PM1 control registers (A/B). These registers 1116are different than the PM1 A/B status and enable registers in that different 1117values can be written to the A/B registers. Most notably, the SLP_TYP bits 1118can be different, as per the values returned from the _Sx predefined methods. 1119 1120Removed an extra register write within AcpiHwClearAcpiStatus. This function 1121was writing an optional PM1B status register twice. The existing call to the 1122low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B 1123register. ACPICA BZ 751. 1124 1125Split out the PM1 Status registers from the FADT. Added new globals for these 1126registers (A/B), similar to the way the PM1 Enable registers are handled. 1127Instead of overloading the FADT Event Register blocks. This makes the code 1128clearer and less prone to error. 1129 1130Fixed the warning message for when the platform contains too many ACPI tables 1131for the default size of the global root table data structure. The calculation 1132for the truncation value was incorrect. 1133 1134Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 1135obsolete macro, since it is now a simple reference to ->common.type. There 1136were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 1137 1138Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 1139TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 1140simply SLEEP_TYPE. ACPICA BZ 754. 1141 1142Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 1143function is only needed on 64-bit host operating systems and is thus not 1144included for 32-bit hosts. 1145 1146Debug output: print the input and result for invocations of the _OSI reserved 1147control method via the ACPI_LV_INFO debug level. Also, reduced some of the 1148verbosity of this debug level. Len Brown. 1149 1150Example Code and Data Size: These are the sizes for the OS-independent 1151acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1152debug version of the code includes the debug output trace mechanism and has a 1153much larger code and data size. 1154 1155 Previous Release: 1156 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 1157 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 1158 Current Release: 1159 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 1160 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 1161 11622) iASL Compiler/Disassembler and Tools: 1163 1164Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 1165various legal performance profiles. 1166 1167---------------------------------------- 116823 January 2009. Summary of changes for version 20090123: 1169 11701) ACPI CA Core Subsystem: 1171 1172Added the 2009 copyright to all module headers and signons. This affects 1173virtually every file in the ACPICA core subsystem, the iASL compiler, and 1174the tools/utilities. 1175 1176Implemented a change to allow the host to override any ACPI table, including 1177dynamically loaded tables. Previously, only the DSDT could be replaced by the 1178host. With this change, the AcpiOsTableOverride interface is called for each 1179table found in the RSDT/XSDT during ACPICA initialization, and also whenever 1180a table is dynamically loaded via the AML Load operator. 1181 1182Updated FADT flag definitions, especially the Boot Architecture flags. 1183 1184Debugger: For the Find command, automatically pad the input ACPI name with 1185underscores if the name is shorter than 4 characters. This enables a match 1186with the actual namespace entry which is itself padded with underscores. 1187 1188Example Code and Data Size: These are the sizes for the OS-independent 1189acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1190debug version of the code includes the debug output trace mechanism and has a 1191much larger code and data size. 1192 1193 Previous Release: 1194 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 1195 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 1196 Current Release: 1197 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 1198 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 1199 12002) iASL Compiler/Disassembler and Tools: 1201 1202Fix build error under Bison-2.4. 1203 1204Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture 1205flags. Now decode all flags, regardless of the FADT version. Flag output 1206includes the FADT version which first defined each flag. 1207 1208The iASL -g option now dumps the RSDT to a file (in addition to the FADT and 1209DSDT). Windows only. 1210 1211---------------------------------------- 121204 December 2008. Summary of changes for version 20081204: 1213 12141) ACPI CA Core Subsystem: 1215 1216The ACPICA Programmer Reference has been completely updated and revamped for 1217this release. This includes updates to the external interfaces, OSL 1218interfaces, the overview sections, and the debugger reference. 1219 1220Several new ACPICA interfaces have been implemented and documented in the 1221programmer reference: 1222AcpiReset - Writes the reset value to the FADT-defined reset register. 1223AcpiDisableAllGpes - Disable all available GPEs. 1224AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 1225AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 1226AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 1227AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 1228AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 1229 1230Most of the public ACPI hardware-related interfaces have been moved to a new 1231file, components/hardware/hwxface.c 1232 1233Enhanced the FADT parsing and low-level ACPI register access: The ACPI 1234register lengths within the FADT are now used, and the low level ACPI 1235register access no longer hardcodes the ACPI register lengths. Given that 1236there may be some risk in actually trusting the FADT register lengths, a run- 1237time option was added to fall back to the default hardcoded lengths if the 1238FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 1239option is set to true for now, and a warning is issued if a suspicious FADT 1240register length is overridden with the default value. 1241 1242Fixed a reference count issue in NsRepairObject. This problem was introduced 1243in version 20081031 as part of a fix to repair Buffer objects within 1244Packages. Lin Ming. 1245 1246Added semaphore support to the Linux/Unix application OS-services layer 1247(OSL). ACPICA BZ 448. Lin Ming. 1248 1249Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will 1250be implemented in the OSL, or will binary semaphores be used instead. 1251 1252Example Code and Data Size: These are the sizes for the OS-independent 1253acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1254debug version of the code includes the debug output trace mechanism and has a 1255much larger code and data size. 1256 1257 Previous Release: 1258 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 1259 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 1260 Current Release: 1261 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 1262 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 1263 12642) iASL Compiler/Disassembler and Tools: 1265 1266iASL: Completed the '-e' option to include additional ACPI tables in order to 1267aid with disassembly and External statement generation. ACPICA BZ 742. Lin 1268Ming. 1269 1270iASL: Removed the "named object in while loop" error. The compiler cannot 1271determine how many times a loop will execute. ACPICA BZ 730. 1272 1273Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA 1274BZ 743. 1275 1276Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG). 1277 1278---------------------------------------- 127931 October 2008. Summary of changes for version 20081031: 1280 12811) ACPI CA Core Subsystem: 1282 1283Restructured the ACPICA header files into public/private. acpi.h now includes 1284only the "public" acpica headers. All other acpica headers are "private" and 1285should not be included by acpica users. One new file, accommon.h is used to 1286include the commonly used private headers for acpica code generation. Future 1287plans include moving all private headers to a new subdirectory. 1288 1289Implemented an automatic Buffer->String return value conversion for 1290predefined ACPI methods. For these methods (such as _BIF), added automatic 1291conversion for return objects that are required to be a String, but a Buffer 1292was found instead. This can happen when reading string battery data from an 1293operation region, because it used to be difficult to convert the data from 1294buffer to string from within the ASL. Ensures that the host OS is provided 1295with a valid null-terminated string. Linux BZ 11822. 1296 1297Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector 1298into two: one for the 32-bit vector, another for the 64-bit vector. This is 1299required because the host OS must setup the wake much differently for each 1300vector (real vs. protected mode, etc.) and the interface itself should not be 1301deciding which vector to use. Also, eliminated the GetFirmwareWakingVector 1302interface, as it served no purpose (only the firmware reads the vector, OS 1303only writes the vector.) ACPICA BZ 731. 1304 1305Implemented a mechanism to escape infinite AML While() loops. Added a loop 1306counter to force exit from AML While loops if the count becomes too large. 1307This can occur in poorly written AML when the hardware does not respond 1308within a while loop and the loop does not implement a timeout. The maximum 1309loop count is configurable. A new exception code is returned when a loop is 1310broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 1311 1312Optimized the execution of AML While loops. Previously, a control state 1313object was allocated and freed for each execution of the loop. The 1314optimization is to simply reuse the control state for each iteration. This 1315speeds up the raw loop execution time by about 5%. 1316 1317Enhanced the implicit return mechanism. For Windows compatibility, return an 1318implicit integer of value zero for methods that contain no executable code. 1319Such methods are seen in the field as stubs (presumably), and can cause 1320drivers to fail if they expect a return value. Lin Ming. 1321 1322Allow multiple backslashes as root prefixes in namepaths. In a fully 1323qualified namepath, allow multiple backslash prefixes. This can happen (and 1324is seen in the field) because of the use of a double-backslash in strings 1325(since backslash is the escape character) causing confusion. ACPICA BZ 739 1326Lin Ming. 1327 1328Emit a warning if two different FACS or DSDT tables are discovered in the 1329FADT. Checks if there are two valid but different addresses for the FACS and 1330DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 1331 1332Consolidated the method argument count validation code. Merged the code that 1333validates control method argument counts into the predefined validation 1334module. Eliminates possible multiple warnings for incorrect argument counts. 1335 1336Implemented ACPICA example code. Includes code for ACPICA initialization, 1337handler installation, and calling a control method. Available at 1338source/tools/examples. 1339 1340Added a global pointer for FACS table to simplify internal FACS access. Use 1341the global pointer instead of using AcpiGetTableByIndex for each FACS access. 1342This simplifies the code for the Global Lock and the Firmware Waking 1343Vector(s). 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 a 1348much larger code and data size. 1349 1350 Previous Release: 1351 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 1352 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 1353 Current Release: 1354 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 1355 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 1356 13572) iASL Compiler/Disassembler and Tools: 1358 1359iASL: Improved disassembly of external method calls. Added the -e option to 1360allow the inclusion of additional ACPI tables to help with the disassembly of 1361method invocations and the generation of external declarations during the 1362disassembly. Certain external method invocations cannot be disassembled 1363properly without the actual declaration of the method. Use the -e option to 1364include the table where the external method(s) are actually declared. Most 1365useful for disassembling SSDTs that make method calls back to the master 1366DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d 1367-e dsdt.aml ssdt1.aml 1368 1369iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 1370problem where the use of an alias within a namepath would result in a not 1371found error or cause the compiler to fault. Also now allows forward 1372references from the Alias operator itself. ACPICA BZ 738. 1373 1374---------------------------------------- 137526 September 2008. Summary of changes for version 20080926: 1376 13771) ACPI CA Core Subsystem: 1378 1379Designed and implemented a mechanism to validate predefined ACPI methods and 1380objects. This code validates the predefined ACPI objects (objects whose names 1381start with underscore) that appear in the namespace, at the time they are 1382evaluated. The argument count and the type of the returned object are 1383validated against the ACPI specification. The purpose of this validation is 1384to detect problems with the BIOS-implemented predefined ACPI objects before 1385the results are returned to the ACPI-related drivers. Future enhancements may 1386include actual repair of incorrect return objects where possible. Two new 1387files are nspredef.c and acpredef.h. 1388 1389Fixed a fault in the AML parser if a memory allocation fails during the Op 1390completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 1391 1392Fixed an issue with implicit return compatibility. This change improves the 1393implicit return mechanism to be more compatible with the MS interpreter. Lin 1394Ming, ACPICA BZ 349. 1395 1396Implemented support for zero-length buffer-to-string conversions. Allow zero 1397length strings during interpreter buffer-to-string conversions. For example, 1398during the ToDecimalString and ToHexString operators, as well as implicit 1399conversions. Fiodor Suietov, ACPICA BZ 585. 1400 1401Fixed two possible memory leaks in the error exit paths of 1402AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are 1403similar in that they use a stack of state objects in order to eliminate 1404recursion. The stack must be fully unwound and deallocated if an error 1405occurs. Lin Ming. ACPICA BZ 383. 1406 1407Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global 1408ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 1409Moore ACPICA BZ 442. 1410 1411Removed the obsolete version number in module headers. Removed the 1412"$Revision" number that appeared in each module header. This version number 1413was useful under SourceSafe and CVS, but has no meaning under git. It is not 1414only incorrect, it could also be misleading. 1415 1416Example Code and Data Size: These are the sizes for the OS-independent 1417acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1418debug version of the code includes the debug output trace mechanism and has a 1419much larger code and data size. 1420 1421 Previous Release: 1422 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1423 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 1424 Current Release: 1425 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 1426 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 1427 1428---------------------------------------- 142929 August 2008. Summary of changes for version 20080829: 1430 14311) ACPI CA Core Subsystem: 1432 1433Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 1434Reference. Changes include the elimination of cheating on the Object field 1435for the DdbHandle subtype, addition of a reference class field to 1436differentiate the various reference types (instead of an AML opcode), and the 1437cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 1438 1439Reduce an error to a warning for an incorrect method argument count. 1440Previously aborted with an error if too few arguments were passed to a 1441control method via the external ACPICA interface. Now issue a warning instead 1442and continue. Handles the case where the method inadvertently declares too 1443many arguments, but does not actually use the extra ones. Applies mainly to 1444the predefined methods. Lin Ming. Linux BZ 11032. 1445 1446Disallow the evaluation of named object types with no intrinsic value. Return 1447AE_TYPE for objects that have no value and therefore evaluation is undefined: 1448Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of 1449these types were allowed, but an exception would be generated at some point 1450during the evaluation. Now, the error is generated up front. 1451 1452Fixed a possible memory leak in the AcpiNsGetExternalPathname function 1453(nsnames.c). Fixes a leak in the error exit path. 1454 1455Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug 1456levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION 1457interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 1458ACPI_LV_EVENTS. 1459 1460Removed obsolete and/or unused exception codes from the acexcep.h header. 1461There is the possibility that certain device drivers may be affected if they 1462use any of these exceptions. 1463 1464The ACPICA documentation has been added to the public git source tree, under 1465acpica/documents. Included are the ACPICA programmer reference, the iASL 1466compiler reference, and the changes.txt release logfile. 1467 1468Example Code and Data Size: These are the sizes for the OS-independent 1469acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1470debug version of the code includes the debug output trace mechanism and has a 1471much larger code and data size. 1472 1473 Previous Release: 1474 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1475 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 1476 Current Release: 1477 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1478 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 1479 14802) iASL Compiler/Disassembler and Tools: 1481 1482Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 1483defines _SCP with 3 arguments. Previous versions defined it with only 1 1484argument. iASL now allows both definitions. 1485 1486iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero- 1487length subtables when disassembling ACPI tables. Also fixed a couple of 1488errors where a full 16-bit table type field was not extracted from the input 1489properly. 1490 1491acpisrc: Improve comment counting mechanism for generating source code 1492statistics. Count first and last lines of multi-line comments as whitespace, 1493not comment lines. Handle Linux legal header in addition to standard acpica 1494header. 1495 1496---------------------------------------- 1497 149829 July 2008. Summary of changes for version 20080729: 1499 15001) ACPI CA Core Subsystem: 1501 1502Fix a possible deadlock in the GPE dispatch. Remove call to 1503AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt 1504to acquire the GPE lock but can deadlock since the GPE lock is already held 1505at dispatch time. This code was introduced in version 20060831 as a response 1506to Linux BZ 6881 and has since been removed from Linux. 1507 1508Add a function to dereference returned reference objects. Examines the return 1509object from a call to AcpiEvaluateObject. Any Index or RefOf references are 1510automatically dereferenced in an attempt to return something useful (these 1511reference types cannot be converted into an external ACPI_OBJECT.) Provides 1512MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 1513 1514x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 1515subtables for the MADT and one new subtable for the SRAT. Includes 1516disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC 1517Specification, June 2008. 1518 1519Additional error checking for pathname utilities. Add error check after all 1520calls to AcpiNsGetPathnameLength. Add status return from 1521AcpiNsBuildExternalPath and check after all calls. Add parameter validation 1522to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 1523 1524Return status from the global init function AcpiUtGlobalInitialize. This is 1525used by both the kernel subsystem and the utilities such as iASL compiler. 1526The function could possibly fail when the caches are initialized. Yang Yi. 1527 1528Add a function to decode reference object types to strings. Created for 1529improved error messages. 1530 1531Improve object conversion error messages. Better error messages during object 1532conversion from internal to the external ACPI_OBJECT. Used for external calls 1533to AcpiEvaluateObject. 1534 1535Example Code and Data Size: These are the sizes for the OS-independent 1536acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1537debug version of the code includes the debug output trace mechanism and has a 1538much larger code and data size. 1539 1540 Previous Release: 1541 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 1542 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 1543 Current Release: 1544 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1545 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 1546 15472) iASL Compiler/Disassembler and Tools: 1548 1549Debugger: fix a possible hang when evaluating non-methods. Fixes a problem 1550introduced in version 20080701. If the object being evaluated (via execute 1551command) is not a method, the debugger can hang while trying to obtain non- 1552existent parameters. 1553 1554iASL: relax error for using reserved "_T_x" identifiers. These names can 1555appear in a disassembled ASL file if they were emitted by the original 1556compiler. Instead of issuing an error or warning and forcing the user to 1557manually change these names, issue a remark instead. 1558 1559iASL: error if named object created in while loop. Emit an error if any named 1560object is created within a While loop. If allowed, this code will generate a 1561run-time error on the second iteration of the loop when an attempt is made to 1562create the same named object twice. ACPICA bugzilla 730. 1563 1564iASL: Support absolute pathnames for include files. Add support for absolute 1565pathnames within the Include operator. previously, only relative pathnames 1566were supported. 1567 1568iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor. 1569The ACPI spec requires one interrupt minimum. BZ 423 1570 1571iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 1572Handles the case for the Interrupt Resource Descriptor where 1573the ResourceSource argument is omitted but ResourceSourceIndex 1574is present. Now leave room for the Index. BZ 426 1575 1576iASL: Prevent error message if CondRefOf target does not exist. Fixes cases 1577where an error message is emitted if the target does not exist. BZ 516 1578 1579iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 1580(get ACPI tables on Windows). This was apparently broken in version 20070919. 1581 1582AcpiXtract: Handle EOF while extracting data. Correctly handle the case where 1583the EOF happens immediately after the last table in the input file. Print 1584completion message. Previously, no message was displayed in this case. 1585 1586---------------------------------------- 158701 July 2008. Summary of changes for version 20080701: 1588 15890) Git source tree / acpica.org 1590 1591Fixed a problem where a git-clone from http would not transfer the entire 1592source tree. 1593 15941) ACPI CA Core Subsystem: 1595 1596Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 1597enable bit. Now performs a read-change-write of the enable register instead 1598of simply writing out the cached enable mask. This will prevent inadvertent 1599enabling of GPEs if a rogue GPE is received during initialization (before GPE 1600handlers are installed.) 1601 1602Implemented a copy for dynamically loaded tables. Previously, dynamically 1603loaded tables were simply mapped - but on some machines this memory is 1604corrupted after suspend. Now copy the table to a local buffer. For the 1605OpRegion case, added checksum verify. Use the table length from the table 1606header, not the region length. For the Buffer case, use the table length 1607also. Dennis Noordsij, Bob Moore. BZ 10734 1608 1609Fixed a problem where the same ACPI table could not be dynamically loaded and 1610unloaded more than once. Without this change, a table cannot be loaded again 1611once it has been loaded/unloaded one time. The current mechanism does not 1612unregister a table upon an unload. During a load, if the same table is found, 1613this no longer returns an exception. BZ 722 1614 1615Fixed a problem where the wrong descriptor length was calculated for the 1616EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag 1617are calculated as 12 bytes long, but the actual length in the internal 1618descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported 1619by Linn Crosetto. BZ 728 1620 1621Fixed a possible memory leak in the Unload operator. The DdbHandle returned 1622by Load() did not have its reference count decremented during unload, leading 1623to a memory leak. Lin Ming. BZ 727 1624 1625Fixed a possible memory leak when deleting thermal/processor objects. Any 1626associated notify handlers (and objects) were not being deleted. Fiodor 1627Suietov. BZ 506 1628 1629Fixed the ordering of the ASCII names in the global mutex table to match the 1630actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only. 1631Vegard Nossum. BZ 726 1632 1633Enhanced the AcpiGetObjectInfo interface to return the number of required 1634arguments if the object is a control method. Added this call to the debugger 1635so the proper number of default arguments are passed to a method. This 1636prevents a warning when executing methods from AcpiExec. 1637 1638Added a check for an invalid handle in AcpiGetObjectInfo. Return 1639AE_BAD_PARAMETER if input handle is invalid. BZ 474 1640 1641Fixed an extraneous warning from exconfig.c on the 64-bit build. 1642 1643Example Code and Data Size: These are the sizes for the OS-independent 1644acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1645debug version of the code includes the debug output trace mechanism and has a 1646much larger code and data size. 1647 1648 Previous Release: 1649 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 1650 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 1651 Current Release: 1652 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 1653 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 1654 16552) iASL Compiler/Disassembler and Tools: 1656 1657iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 1658resource descriptor names. 1659 1660iASL: Detect invalid ASCII characters in input (windows version). Removed the 1661"-CF" flag from the flex compile, enables correct detection of non-ASCII 1662characters in the input. BZ 441 1663 1664iASL: Eliminate warning when result of LoadTable is not used. Eliminate the 1665"result of operation not used" warning when the DDB handle returned from 1666LoadTable is not used. The warning is not needed. BZ 590 1667 1668AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to 1669pass address of table to the AML. Added option to disable OpRegion simulation 1670to allow creation of an OpRegion with a real address that was passed to _CFG. 1671All of this allows testing of the Load and Unload operators from AcpiExec. 1672 1673Debugger: update tables command for unloaded tables. Handle unloaded tables 1674and use the standard table header output routine. 1675 1676---------------------------------------- 167709 June 2008. Summary of changes for version 20080609: 1678 16791) ACPI CA Core Subsystem: 1680 1681Implemented a workaround for reversed _PRT entries. A significant number of 1682BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 1683change dynamically detects and repairs this problem. Provides compatibility 1684with MS ACPI. BZ 6859 1685 1686Simplified the internal ACPI hardware interfaces to eliminate the locking 1687flag parameter from Register Read/Write. Added a new external interface, 1688AcpiGetRegisterUnlocked. 1689 1690Fixed a problem where the invocation of a GPE control method could hang. This 1691was a regression introduced in 20080514. The new method argument count 1692validation mechanism can enter an infinite loop when a GPE method is 1693dispatched. Problem fixed by removing the obsolete code that passed GPE block 1694information to the notify handler via the control method parameter pointer. 1695 1696Fixed a problem where the _SST execution status was incorrectly returned to 1697the caller of AcpiEnterSleepStatePrep. This was a regression introduced in 169820080514. _SST is optional and a NOT_FOUND exception should never be 1699returned. BZ 716 1700 1701Fixed a problem where a deleted object could be accessed from within the AML 1702parser. This was a regression introduced in version 20080123 as a fix for the 1703Unload operator. Lin Ming. BZ 10669 1704 1705Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands 1706and eliminated the use of a negative index in a loop. Operands are now 1707displayed in the correct order, not backwards. This also fixes a regression 1708introduced in 20080514 on 64-bit systems where the elimination of 1709ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715 1710 1711Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit 1712path did not delete a locally allocated structure. 1713 1714Updated definitions for the DMAR and SRAT tables to synchronize with the 1715current specifications. Includes disassembler support. 1716 1717Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 1718loop termination value was used. Loop terminated on iteration early, missing 1719one mutex. Linn Crosetto 1720 1721Example Code and Data Size: These are the sizes for the OS-independent 1722acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1723debug version of the code includes the debug output trace mechanism and has a 1724much larger code and data size. 1725 1726 Previous Release: 1727 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 1728 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 1729 Current Release: 1730 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 1731 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 1732 17332) iASL Compiler/Disassembler and Tools: 1734 1735Disassembler: Implemented support for EisaId() within _CID objects. Now 1736disassemble integer _CID objects back to EisaId invocations, including 1737multiple integers within _CID packages. Includes single-step support for 1738debugger also. 1739 1740Disassembler: Added support for DMAR and SRAT table definition changes. 1741 1742---------------------------------------- 174314 May 2008. Summary of changes for version 20080514: 1744 17451) ACPI CA Core Subsystem: 1746 1747Fixed a problem where GPEs were enabled too early during the ACPICA 1748initialization. This could lead to "handler not installed" errors on some 1749machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This 1750ensures that all operation regions and devices throughout the namespace have 1751been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 1752 1753Implemented a change to the enter sleep code. Moved execution of the _GTS 1754method to just before setting sleep enable bit. The execution was moved from 1755AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 1756immediately before the SLP_EN bit is set, as per the ACPI specification. 1757Luming Yu, BZ 1653. 1758 1759Implemented a fix to disable unknown GPEs (2nd version). Now always disable 1760the GPE, even if ACPICA thinks that that it is already disabled. It is 1761possible that the AML or some other code has enabled the GPE unbeknownst to 1762the ACPICA code. 1763 1764Fixed a problem with the Field operator where zero-length fields would return 1765an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL 1766field declarations in Field(), BankField(), and IndexField(). BZ 10606. 1767 1768Implemented a fix for the Load operator, now load the table at the namespace 1769root. This reverts a change introduced in version 20071019. The table is now 1770loaded at the namespace root even though this goes against the ACPI 1771specification. This provides compatibility with other ACPI implementations. 1772The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming. 1773 1774Fixed a problem where ACPICA would not Load() tables with unusual signatures. 1775Now ignore ACPI table signature for Load() operator. Only "SSDT" is 1776acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 1777Therefore, signature validation is worthless. Apparently MS ACPI accepts such 1778signatures, ACPICA must be compatible. BZ 10454. 1779 1780Fixed a possible negative array index in AcpiUtValidateException. Added NULL 1781fields to the exception string arrays to eliminate a -1 subtraction on the 1782SubStatus field. 1783 1784Updated the debug tracking macros to reduce overall code and data size. 1785Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 1786instead of pointers to static strings. Jan Beulich and Bob Moore. 1787 1788Implemented argument count checking in control method invocation via 1789AcpiEvaluateObject. Now emit an error if too few arguments, warning if too 1790many. This applies only to extern programmatic control method execution, not 1791method-to-method calls within the AML. Lin Ming. 1792 1793Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no 1794longer needed, especially with the removal of 16-bit support. It was replaced 1795mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on 179632/64-bit platforms is required. 1797 1798Added the C const qualifier for appropriate string constants -- mostly 1799MODULE_NAME and printf format strings. Jan Beulich. 1800 1801Example Code and Data Size: These are the sizes for the OS-independent 1802acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1803debug version of the code includes the debug output trace mechanism and has a 1804much larger code and data size. 1805 1806 Previous Release: 1807 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 1808 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 1809 Current Release: 1810 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 1811 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 1812 18132) iASL Compiler/Disassembler and Tools: 1814 1815Implemented ACPI table revision ID validation in the disassembler. Zero is 1816always invalid. For DSDTs, the ID controls the interpreter integer width. 1 1817means 32-bit and this is unusual. 2 or greater is 64-bit. 1818 1819---------------------------------------- 182021 March 2008. Summary of changes for version 20080321: 1821 18221) ACPI CA Core Subsystem: 1823 1824Implemented an additional change to the GPE support in order to suppress 1825spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently 1826disable incoming GPEs that are neither enabled nor disabled -- meaning that 1827the GPE is unknown to the system. This should prevent future interrupt floods 1828from that GPE. BZ 6217 (Zhang Rui) 1829 1830Fixed a problem where NULL package elements were not returned to the 1831AcpiEvaluateObject interface correctly. The element was simply ignored 1832instead of returning a NULL ACPI_OBJECT package element, potentially causing 1833a buffer overflow and/or confusing the caller who expected a fixed number of 1834elements. BZ 10132 (Lin Ming, Bob Moore) 1835 1836Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword, 1837Qword), Field, BankField, and IndexField operators when invoked from inside 1838an executing control method. In this case, these operators created namespace 1839nodes that were incorrectly left marked as permanent nodes instead of 1840temporary nodes. This could cause a problem if there is race condition 1841between an exiting control method and a running namespace walk. (Reported by 1842Linn Crosetto) 1843 1844Fixed a problem where the CreateField and CreateXXXField operators would 1845incorrectly allow duplicate names (the name of the field) with no exception 1846generated. 1847 1848Implemented several changes for Notify handling. Added support for new Notify 1849values (ACPI 2.0+) and improved the Notify debug output. Notify on 1850PowerResource objects is no longer allowed, as per the ACPI specification. 1851(Bob Moore, Zhang Rui) 1852 1853All Reference Objects returned via the AcpiEvaluateObject interface are now 1854marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for 1855NULL objects - either NULL package elements or unresolved named references. 1856 1857Fixed a problem where an extraneous debug message was produced for package 1858objects (when debugging enabled). The message "Package List length larger 1859than NumElements count" is now produced in the correct case, and is now an 1860error message rather than a debug message. Added a debug message for the 1861opposite case, where NumElements is larger than the Package List (the package 1862will be padded out with NULL elements as per the ACPI spec.) 1863 1864Implemented several improvements for the output of the ASL "Debug" object to 1865clarify and keep all data for a given object on one output line. 1866 1867Fixed two size calculation issues with the variable-length Start Dependent 1868resource descriptor. 1869 1870Example Code and Data Size: These are the sizes for the OS-independent 1871acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1872debug version of the code includes the debug output trace mechanism and has 1873a much larger code and data size. 1874 1875 Previous Release: 1876 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 1877 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 1878 Current Release: 1879 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 1880 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 1881 18822) iASL Compiler/Disassembler and Tools: 1883 1884Fixed a problem with the use of the Switch operator where execution of the 1885containing method by multiple concurrent threads could cause an 1886AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 1887actual Switch opcode, it must be simulated with local named temporary 1888variables and if/else pairs. The solution chosen was to mark any method that 1889uses Switch as Serialized, thus preventing multiple thread entries. BZ 469. 1890 1891---------------------------------------- 189213 February 2008. Summary of changes for version 20080213: 1893 18941) ACPI CA Core Subsystem: 1895 1896Implemented another MS compatibility design change for GPE/Notify handling. 1897GPEs are now cleared/enabled asynchronously to allow all pending notifies to 1898complete first. It is expected that the OSL will queue the enable request 1899behind all pending notify requests (may require changes to the local host OSL 1900in AcpiOsExecute). Alexey Starikovskiy. 1901 1902Fixed a problem where buffer and package objects passed as arguments to a 1903control method via the external AcpiEvaluateObject interface could cause an 1904AE_AML_INTERNAL exception depending on the order and type of operators 1905executed by the target control method. 1906 1907Fixed a problem where resource descriptor size optimization could cause a 1908problem when a _CRS resource template is passed to a _SRS method. The _SRS 1909resource template must use the same descriptors (with the same size) as 1910returned from _CRS. This change affects the following resource descriptors: 1911IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487) 1912 1913Fixed a problem where a CopyObject to RegionField, BankField, and IndexField 1914objects did not perform an implicit conversion as it should. These types must 1915retain their initial type permanently as per the ACPI specification. However, 1916a CopyObject to all other object types should not perform an implicit 1917conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 1918 1919Fixed a problem with the AcpiGetDevices interface where the mechanism to 1920match device CIDs did not examine the entire list of available CIDs, but 1921instead aborted on the first non-matching CID. Andrew Patterson. 1922 1923Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was 1924inadvertently changed to return a 16-bit value instead of a 32-bit value, 1925truncating the upper dword of a 64-bit value. This macro is only used to 1926display debug output, so no incorrect calculations were made. Also, 1927reimplemented the macro so that a 64-bit shift is not performed by 1928inefficient compilers. 1929 1930Added missing va_end statements that should correspond with each va_start 1931statement. 1932 1933Example Code and Data Size: These are the sizes for the OS-independent 1934acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1935debug version of the code includes the debug output trace mechanism and has 1936a much larger code and data size. 1937 1938 Previous Release: 1939 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 1940 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 1941 Current Release: 1942 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 1943 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 1944 19452) iASL Compiler/Disassembler and Tools: 1946 1947Implemented full disassembler support for the following new ACPI tables: 1948BERT, EINJ, and ERST. Implemented partial disassembler support for the 1949complicated HEST table. These tables support the Windows Hardware Error 1950Architecture (WHEA). 1951 1952---------------------------------------- 195323 January 2008. Summary of changes for version 20080123: 1954 19551) ACPI CA Core Subsystem: 1956 1957Added the 2008 copyright to all module headers and signons. This affects 1958virtually every file in the ACPICA core subsystem, the iASL compiler, and 1959the tools/utilities. 1960 1961Fixed a problem with the SizeOf operator when used with Package and Buffer 1962objects. These objects have deferred execution for some arguments, and the 1963execution is now completed before the SizeOf is executed. This problem caused 1964unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ 19659558 1966 1967Implemented an enhancement to the interpreter "slack mode". In the absence of 1968an explicit return or an implicitly returned object from the last executed 1969opcode, a control method will now implicitly return an integer of value 0 for 1970Microsoft compatibility. (Lin Ming) BZ 392 1971 1972Fixed a problem with the Load operator where an exception was not returned in 1973the case where the table is already loaded. (Lin Ming) BZ 463 1974 1975Implemented support for the use of DDBHandles as an Indexed Reference, as per 1976the ACPI spec. (Lin Ming) BZ 486 1977 1978Implemented support for UserTerm (Method invocation) for the Unload operator 1979as per the ACPI spec. (Lin Ming) BZ 580 1980 1981Fixed a problem with the LoadTable operator where the OemId and OemTableId 1982input strings could cause unexpected failures if they were shorter than the 1983maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 1984 1985Implemented support for UserTerm (Method invocation) for the Unload operator 1986as per the ACPI spec. (Lin Ming) BZ 580 1987 1988Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST, 1989IBFT, UEFI, WDAT. Disassembler support is forthcoming. 1990 1991Example Code and Data Size: These are the sizes for the OS-independent 1992acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1993debug version of the code includes the debug output trace mechanism and has 1994a much larger code and data size. 1995 1996 Previous Release: 1997 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 1998 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 1999 Current Release: 2000 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 2001 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 2002 20032) iASL Compiler/Disassembler and Tools: 2004 2005Implemented support in the disassembler for checksum validation on incoming 2006binary DSDTs and SSDTs. If incorrect, a message is displayed within the table 2007header dump at the start of the disassembly. 2008 2009Implemented additional debugging information in the namespace listing file 2010created during compilation. In addition to the namespace hierarchy, the full 2011pathname to each namespace object is displayed. 2012 2013Fixed a problem with the disassembler where invalid ACPI tables could cause 2014faults or infinite loops. 2015 2016Fixed an unexpected parse error when using the optional "parameter types" 2017list in a control method declaration. (Lin Ming) BZ 397 2018 2019Fixed a problem where two External declarations with the same name did not 2020cause an error (Lin Ming) BZ 509 2021 2022Implemented support for full TermArgs (adding Argx, Localx and method 2023invocation) for the ParameterData parameter to the LoadTable operator. (Lin 2024Ming) BZ 583,587 2025 2026---------------------------------------- 202719 December 2007. Summary of changes for version 20071219: 2028 20291) ACPI CA Core Subsystem: 2030 2031Implemented full support for deferred execution for the TermArg string 2032arguments for DataTableRegion. This enables forward references and full 2033operand resolution for the three string arguments. Similar to OperationRegion 2034deferred argument execution.) Lin Ming. BZ 430 2035 2036Implemented full argument resolution support for the BankValue argument to 2037BankField. Previously, only constants were supported, now any TermArg may be 2038used. Lin Ming BZ 387, 393 2039 2040Fixed a problem with AcpiGetDevices where the search of a branch of the 2041device tree could be terminated prematurely. In accordance with the ACPI 2042specification, the search down the current branch is terminated if a device 2043is both not present and not functional (instead of just not present.) Yakui 2044Zhao. 2045 2046Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if 2047the underlying AML code changed the GPE enable registers. Now, any unknown 2048incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled 2049instead of simply ignored. Rui Zhang. 2050 2051Fixed a problem with Index Fields where the Index register was incorrectly 2052limited to a maximum of 32 bits. Now any size may be used. 2053 2054Fixed a couple memory leaks associated with "implicit return" objects when 2055the AML Interpreter slack mode is enabled. Lin Ming BZ 349 2056 2057Example Code and Data Size: These are the sizes for the OS-independent 2058acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2059debug version of the code includes the debug output trace mechanism and has 2060a much larger code and data size. 2061 2062 Previous Release: 2063 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 2064 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 2065 Current Release: 2066 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 2067 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 2068 2069---------------------------------------- 207014 November 2007. Summary of changes for version 20071114: 2071 20721) ACPI CA Core Subsystem: 2073 2074Implemented event counters for each of the Fixed Events, the ACPI SCI 2075(interrupt) itself, and control methods executed. Named 2076AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These 2077should be useful for debugging and statistics. 2078 2079Implemented a new external interface, AcpiGetStatistics, to retrieve the 2080contents of the various event counters. Returns the current values for 2081AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 2082AcpiMethodCount. The interface can be expanded in the future if new counters 2083are added. Device drivers should use this interface rather than access the 2084counters directly. 2085 2086Fixed a problem with the FromBCD and ToBCD operators. With some compilers, 2087the ShortDivide function worked incorrectly, causing problems with the BCD 2088functions with large input values. A truncation from 64-bit to 32-bit 2089inadvertently occurred. Internal BZ 435. Lin Ming 2090 2091Fixed a problem with Index references passed as method arguments. References 2092passed as arguments to control methods were dereferenced immediately (before 2093control was passed to the called method). The references are now correctly 2094passed directly to the called method. BZ 5389. Lin Ming 2095 2096Fixed a problem with CopyObject used in conjunction with the Index operator. 2097The reference was incorrectly dereferenced before the copy. The reference is 2098now correctly copied. BZ 5391. Lin Ming 2099 2100Fixed a problem with Control Method references within Package objects. These 2101references are now correctly generated. This completes the package 2102construction overhaul that began in version 20071019. 2103 2104Example Code and Data Size: These are the sizes for the OS-independent 2105acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2106debug version of the code includes the debug output trace mechanism and has 2107a much larger code and data size. 2108 2109 Previous Release: 2110 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 2111 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 2112 Current Release: 2113 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 2114 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 2115 2116 21172) iASL Compiler/Disassembler and Tools: 2118 2119The AcpiExec utility now installs handlers for all of the predefined 2120Operation Region types. New types supported are: PCI_Config, CMOS, and 2121PCIBARTarget. 2122 2123Fixed a problem with the 64-bit version of AcpiExec where the extended (64- 2124bit) address fields for the DSDT and FACS within the FADT were not being 2125used, causing truncation of the upper 32-bits of these addresses. Lin Ming 2126and Bob Moore 2127 2128---------------------------------------- 212919 October 2007. Summary of changes for version 20071019: 2130 21311) ACPI CA Core Subsystem: 2132 2133Fixed a problem with the Alias operator when the target of the alias is a 2134named ASL operator that opens a new scope -- Scope, Device, PowerResource, 2135Processor, and ThermalZone. In these cases, any children of the original 2136operator could not be accessed via the alias, potentially causing unexpected 2137AE_NOT_FOUND exceptions. (BZ 9067) 2138 2139Fixed a problem with the Package operator where all named references were 2140created as object references and left otherwise unresolved. According to the 2141ACPI specification, a Package can only contain Data Objects or references to 2142control methods. The implication is that named references to Data Objects 2143(Integer, Buffer, String, Package, BufferField, Field) should be resolved 2144immediately upon package creation. This is the approach taken with this 2145change. References to all other named objects (Methods, Devices, Scopes, 2146etc.) are all now properly created as reference objects. (BZ 5328) 2147 2148Reverted a change to Notify handling that was introduced in version 214920070508. This version changed the Notify handling from asynchronous to 2150fully synchronous (Device driver Notify handling with respect to the Notify 2151ASL operator). It was found that this change caused more problems than it 2152solved and was removed by most users. 2153 2154Fixed a problem with the Increment and Decrement operators where the type of 2155the target object could be unexpectedly and incorrectly changed. (BZ 353) 2156Lin Ming. 2157 2158Fixed a problem with the Load and LoadTable operators where the table 2159location within the namespace was ignored. Instead, the table was always 2160loaded into the root or current scope. Lin Ming. 2161 2162Fixed a problem with the Load operator when loading a table from a buffer 2163object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 2164 2165Fixed a problem with the Debug object where a store of a DdbHandle reference 2166object to the Debug object could cause a fault. 2167 2168Added a table checksum verification for the Load operator, in the case where 2169the load is from a buffer. (BZ 578). 2170 2171Implemented additional parameter validation for the LoadTable operator. The 2172length of the input strings SignatureString, OemIdString, and OemTableId are 2173now checked for maximum lengths. (BZ 582) Lin Ming. 2174 2175Example Code and Data Size: These are the sizes for the OS-independent 2176acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2177debug version of the code includes the debug output trace mechanism and has 2178a much larger code and data size. 2179 2180 Previous Release: 2181 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 2182 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 2183 Current Release: 2184 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 2185 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 2186 2187 21882) iASL Compiler/Disassembler: 2189 2190Fixed a problem where if a single file was specified and the file did not 2191exist, no error message was emitted. (Introduced with wildcard support in 2192version 20070917.) 2193 2194---------------------------------------- 219519 September 2007. Summary of changes for version 20070919: 2196 21971) ACPI CA Core Subsystem: 2198 2199Designed and implemented new external interfaces to install and remove 2200handlers for ACPI table-related events. Current events that are defined are 2201LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 2202they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 2203AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 2204 2205Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 2206(acpi_serialized option on Linux) could cause some systems to hang during 2207initialization. (Bob Moore) BZ 8171 2208 2209Fixed a problem where objects of certain types (Device, ThermalZone, 2210Processor, PowerResource) can be not found if they are declared and 2211referenced from within the same control method (Lin Ming) BZ 341 2212 2213Example Code and Data Size: These are the sizes for the OS-independent 2214acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2215debug version of the code includes the debug output trace mechanism and has 2216a much larger code and data size. 2217 2218 Previous Release: 2219 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 2220 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 2221 Current Release: 2222 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 2223 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 2224 2225 22262) iASL Compiler/Disassembler: 2227 2228Implemented support to allow multiple files to be compiled/disassembled in a 2229single invocation. This includes command line wildcard support for both the 2230Windows and Unix versions of the compiler. This feature simplifies the 2231disassembly and compilation of multiple ACPI tables in a single directory. 2232 2233---------------------------------------- 223408 May 2007. Summary of changes for version 20070508: 2235 22361) ACPI CA Core Subsystem: 2237 2238Implemented a Microsoft compatibility design change for the handling of the 2239Notify AML operator. Previously, notify handlers were dispatched and 2240executed completely asynchronously in a deferred thread. The new design 2241still executes the notify handlers in a different thread, but the original 2242thread that executed the Notify() now waits at a synchronization point for 2243the notify handler to complete. Some machines depend on a synchronous Notify 2244operator in order to operate correctly. 2245 2246Implemented support to allow Package objects to be passed as method 2247arguments to the external AcpiEvaluateObject interface. Previously, this 2248would return the AE_NOT_IMPLEMENTED exception. This feature had not been 2249implemented since there were no reserved control methods that required it 2250until recently. 2251 2252Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that 2253contained invalid non-zero values in reserved fields could cause later 2254failures because these fields have meaning in later revisions of the FADT. 2255For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields 2256are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 2257 2258Fixed a problem where the Global Lock handle was not properly updated if a 2259thread that acquired the Global Lock via executing AML code then attempted 2260to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe 2261Liu. 2262 2263Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 2264could be corrupted if the interrupt being removed was at the head of the 2265list. Reported by Linn Crosetto. 2266 2267Example Code and Data Size: These are the sizes for the OS-independent 2268acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2269debug version of the code includes the debug output trace mechanism and has 2270a much larger code and data size. 2271 2272 Previous Release: 2273 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2274 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 2275 Current Release: 2276 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 2277 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 2278 2279---------------------------------------- 228020 March 2007. Summary of changes for version 20070320: 2281 22821) ACPI CA Core Subsystem: 2283 2284Implemented a change to the order of interpretation and evaluation of AML 2285operand objects within the AML interpreter. The interpreter now evaluates 2286operands in the order that they appear in the AML stream (and the 2287corresponding ASL code), instead of in the reverse order (after the entire 2288operand list has been parsed). The previous behavior caused several subtle 2289incompatibilities with the Microsoft AML interpreter as well as being 2290somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 2291 2292Implemented a change to the ACPI Global Lock support. All interfaces to the 2293global lock now allow the same thread to acquire the lock multiple times. 2294This affects the AcpiAcquireGlobalLock external interface to the global lock 2295as well as the internal use of the global lock to support AML fields -- a 2296control method that is holding the global lock can now simultaneously access 2297AML fields that require global lock protection. Previously, in both cases, 2298this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to 2299AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 2300Controller. There is no change to the behavior of the AML Acquire operator, 2301as this can already be used to acquire a mutex multiple times by the same 2302thread. BZ 8066. With assistance from Alexey Starikovskiy. 2303 2304Fixed a problem where invalid objects could be referenced in the AML 2305Interpreter after error conditions. During operand evaluation, ensure that 2306the internal "Return Object" field is cleared on error and only valid 2307pointers are stored there. Caused occasional access to deleted objects that 2308resulted in "large reference count" warning messages. Valery Podrezov. 2309 2310Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on 2311deeply nested control method invocations. BZ 7873, local BZ 487. Valery 2312Podrezov. 2313 2314Fixed an internal problem with the handling of result objects on the 2315interpreter result stack. BZ 7872. Valery Podrezov. 2316 2317Removed obsolete code that handled the case where AML_NAME_OP is the target 2318of a reference (Reference.Opcode). This code was no longer necessary. BZ 23197874. Valery Podrezov. 2320 2321Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a 2322remnant from the previously discontinued 16-bit support. 2323 2324Example Code and Data Size: These are the sizes for the OS-independent 2325acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2326debug version of the code includes the debug output trace mechanism and has 2327a much larger code and data size. 2328 2329 Previous Release: 2330 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2331 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2332 Current Release: 2333 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2334 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 2335 2336---------------------------------------- 233726 January 2007. Summary of changes for version 20070126: 2338 23391) ACPI CA Core Subsystem: 2340 2341Added the 2007 copyright to all module headers and signons. This affects 2342virtually every file in the ACPICA core subsystem, the iASL compiler, and 2343the utilities. 2344 2345Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 2346during a table load. A bad pointer was passed in the case where the DSDT is 2347overridden, causing a fault in this case. 2348 2349Example Code and Data Size: These are the sizes for the OS-independent 2350acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2351debug version of the code includes the debug output trace mechanism and has 2352a much larger code and data size. 2353 2354 Previous Release: 2355 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2356 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2357 Current Release: 2358 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2359 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2360 2361---------------------------------------- 236215 December 2006. Summary of changes for version 20061215: 2363 23641) ACPI CA Core Subsystem: 2365 2366Support for 16-bit ACPICA has been completely removed since it is no longer 2367necessary and it clutters the code. All 16-bit macros, types, and 2368conditional compiles have been removed, cleaning up and simplifying the code 2369across the entire subsystem. DOS support is no longer needed since the 2370bootable Linux firmware kit is now available. 2371 2372The handler for the Global Lock is now removed during AcpiTerminate to 2373enable a clean subsystem restart, via the implementation of the 2374AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 2375HP) 2376 2377Implemented enhancements to the multithreading support within the debugger 2378to enable improved multithreading debugging and evaluation of the subsystem. 2379(Valery Podrezov) 2380 2381Debugger: Enhanced the Statistics/Memory command to emit the total (maximum) 2382memory used during the execution, as well as the maximum memory consumed by 2383each of the various object types. (Valery Podrezov) 2384 2385Example Code and Data Size: These are the sizes for the OS-independent 2386acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2387debug version of the code includes the debug output trace mechanism and has 2388a much larger code and data size. 2389 2390 Previous Release: 2391 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 2392 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 2393 Current Release: 2394 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2395 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2396 2397 23982) iASL Compiler/Disassembler and Tools: 2399 2400AcpiExec: Implemented a new option (-m) to display full memory use 2401statistics upon subsystem/program termination. (Valery Podrezov) 2402 2403---------------------------------------- 240409 November 2006. Summary of changes for version 20061109: 2405 24061) ACPI CA Core Subsystem: 2407 2408Optimized the Load ASL operator in the case where the source operand is an 2409operation region. Simply map the operation region memory, instead of 2410performing a bytewise read. (Region must be of type SystemMemory, see 2411below.) 2412 2413Fixed the Load ASL operator for the case where the source operand is a 2414region field. A buffer object is also allowed as the source operand. BZ 480 2415 2416Fixed a problem where the Load ASL operator allowed the source operand to be 2417an operation region of any type. It is now restricted to regions of type 2418SystemMemory, as per the ACPI specification. BZ 481 2419 2420Additional cleanup and optimizations for the new Table Manager code. 2421 2422AcpiEnable will now fail if all of the required ACPI tables are not loaded 2423(FADT, FACS, DSDT). BZ 477 2424 2425Added #pragma pack(8/4) to acobject.h to ensure that the structures in this 2426header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 2427manually optimized to be aligned and will not work if it is byte-packed. 2428 2429Example Code and Data Size: These are the sizes for the OS-independent 2430acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2431debug version of the code includes the debug output trace mechanism and has 2432a much larger code and data size. 2433 2434 Previous Release: 2435 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 2436 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 2437 Current Release: 2438 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 2439 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 2440 2441 24422) iASL Compiler/Disassembler and Tools: 2443 2444Fixed a problem where the presence of the _OSI predefined control method 2445within complex expressions could cause an internal compiler error. 2446 2447AcpiExec: Implemented full region support for multiple address spaces. 2448SpaceId is now part of the REGION object. BZ 429 2449 2450---------------------------------------- 245111 October 2006. Summary of changes for version 20061011: 2452 24531) ACPI CA Core Subsystem: 2454 2455Completed an AML interpreter performance enhancement for control method 2456execution. Previously a 2-pass parse/execution, control methods are now 2457completely parsed and executed in a single pass. This improves overall 2458interpreter performance by ~25%, reduces code size, and reduces CPU stack 2459use. (Valery Podrezov + interpreter changes in version 20051202 that 2460eliminated namespace loading during the pass one parse.) 2461 2462Implemented _CID support for PCI Root Bridge detection. If the _HID does not 2463match the predefined PCI Root Bridge IDs, the _CID list (if present) is now 2464obtained and also checked for an ID match. 2465 2466Implemented additional support for the PCI _ADR execution: upsearch until a 2467device scope is found before executing _ADR. This allows PCI_Config 2468operation regions to be declared locally within control methods underneath 2469PCI device objects. 2470 2471Fixed a problem with a possible race condition between threads executing 2472AcpiWalkNamespace and the AML interpreter. This condition was removed by 2473modifying AcpiWalkNamespace to (by default) ignore all temporary namespace 2474entries created during any concurrent control method execution. An 2475additional namespace race condition is known to exist between 2476AcpiWalkNamespace and the Load/Unload ASL operators and is still under 2477investigation. 2478 2479Restructured the AML ParseLoop function, breaking it into several 2480subfunctions in order to reduce CPU stack use and improve maintainability. 2481(Mikhail Kouzmich) 2482 2483AcpiGetHandle: Fix for parameter validation to detect invalid combinations 2484of prefix handle and pathname. BZ 478 2485 2486Example Code and Data Size: These are the sizes for the OS-independent 2487acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2488debug version of the code includes the debug output trace mechanism and has 2489a much larger code and data size. 2490 2491 Previous Release: 2492 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2493 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 2494 Current Release: 2495 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 2496 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 2497 24982) iASL Compiler/Disassembler and Tools: 2499 2500Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager 2501to restore original behavior. 2502 2503---------------------------------------- 250427 September 2006. Summary of changes for version 20060927: 2505 25061) ACPI CA Core Subsystem: 2507 2508Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 2509These functions now use a spinlock for mutual exclusion and the interrupt 2510level indication flag is not needed. 2511 2512Fixed a problem with the Global Lock where the lock could appear to be 2513obtained before it is actually obtained. The global lock semaphore was 2514inadvertently created with one unit instead of zero units. (BZ 464) Fiodor 2515Suietov. 2516 2517Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during 2518a read from a buffer or region field. (BZ 458) Fiodor Suietov. 2519 2520Example Code and Data Size: These are the sizes for the OS-independent 2521acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2522debug version of the code includes the debug output trace mechanism and has 2523a much larger code and data size. 2524 2525 Previous Release: 2526 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2527 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 2528 Current Release: 2529 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2530 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 2531 2532 25332) iASL Compiler/Disassembler and Tools: 2534 2535Fixed a compilation problem with the pre-defined Resource Descriptor field 2536names where an "object does not exist" error could be incorrectly generated 2537if the parent ResourceTemplate pathname places the template within a 2538different namespace scope than the current scope. (BZ 7212) 2539 2540Fixed a problem where the compiler could hang after syntax errors detected 2541in an ElseIf construct. (BZ 453) 2542 2543Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 2544operator. An incorrect output filename was produced when this parameter was 2545a null string (""). Now, the original input filename is used as the AML 2546output filename, with an ".aml" extension. 2547 2548Implemented a generic batch command mode for the AcpiExec utility (execute 2549any AML debugger command) (Valery Podrezov). 2550 2551---------------------------------------- 255212 September 2006. Summary of changes for version 20060912: 2553 25541) ACPI CA Core Subsystem: 2555 2556Enhanced the implementation of the "serialized mode" of the interpreter 2557(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 2558specified, instead of creating a serialization semaphore per control method, 2559the interpreter lock is simply no longer released before a blocking 2560operation during control method execution. This effectively makes the AML 2561Interpreter single-threaded. The overhead of a semaphore per-method is 2562eliminated. 2563 2564Fixed a regression where an error was no longer emitted if a control method 2565attempts to create 2 objects of the same name. This once again returns 2566AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that 2567will dynamically serialize the control method to possible prevent future 2568errors. (BZ 440) 2569 2570Integrated a fix for a problem with PCI Express HID detection in the PCI 2571Config Space setup procedure. (BZ 7145) 2572 2573Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 2574AcpiHwInitialize function - the FADT registers are now validated when the 2575table is loaded. 2576 2577Added two new warnings during FADT verification - 1) if the FADT is larger 2578than the largest known FADT version, and 2) if there is a mismatch between a 257932-bit block address and the 64-bit X counterpart (when both are non-zero.) 2580 2581Example Code and Data Size: These are the sizes for the OS-independent 2582acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2583debug version of the code includes the debug output trace mechanism and has 2584a much larger code and data size. 2585 2586 Previous Release: 2587 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 2588 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 2589 Current Release: 2590 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2591 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 2592 2593 25942) iASL Compiler/Disassembler and Tools: 2595 2596Fixed a problem with the implementation of the Switch() operator where the 2597temporary variable was declared too close to the actual Switch, instead of 2598at method level. This could cause a problem if the Switch() operator is 2599within a while loop, causing an error on the second iteration. (BZ 460) 2600 2601Disassembler - fix for error emitted for unknown type for target of scope 2602operator. Now, ignore it and continue. 2603 2604Disassembly of an FADT now verifies the input FADT and reports any errors 2605found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 2606 2607Disassembly of raw data buffers with byte initialization data now prefixes 2608each output line with the current buffer offset. 2609 2610Disassembly of ASF! table now includes all variable-length data fields at 2611the end of some of the subtables. 2612 2613The disassembler now emits a comment if a buffer appears to be a 2614ResourceTemplate, but cannot be disassembled as such because the EndTag does 2615not appear at the very end of the buffer. 2616 2617AcpiExec - Added the "-t" command line option to enable the serialized mode 2618of the AML interpreter. 2619 2620---------------------------------------- 262131 August 2006. Summary of changes for version 20060831: 2622 26231) ACPI CA Core Subsystem: 2624 2625Miscellaneous fixes for the Table Manager: 2626- Correctly initialize internal common FADT for all 64-bit "X" fields 2627- Fixed a couple table mapping issues during table load 2628- Fixed a couple alignment issues for IA64 2629- Initialize input array to zero in AcpiInitializeTables 2630- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 2631AcpiGetTableByIndex 2632 2633Change for GPE support: when a "wake" GPE is received, all wake GPEs are now 2634immediately disabled to prevent the waking GPE from firing again and to 2635prevent other wake GPEs from interrupting the wake process. 2636 2637Added the AcpiGpeCount global that tracks the number of processed GPEs, to 2638be used for debugging systems with a large number of ACPI interrupts. 2639 2640Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 2641both the ACPICA headers and the disassembler. 2642 2643Example Code and Data Size: These are the sizes for the OS-independent 2644acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2645debug version of the code includes the debug output trace mechanism and has 2646a much larger code and data size. 2647 2648 Previous Release: 2649 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 2650 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 2651 Current Release: 2652 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 2653 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 2654 2655 26562) iASL Compiler/Disassembler and Tools: 2657 2658Disassembler support for the DMAR ACPI table. 2659 2660---------------------------------------- 266123 August 2006. Summary of changes for version 20060823: 2662 26631) ACPI CA Core Subsystem: 2664 2665The Table Manager component has been completely redesigned and 2666reimplemented. The new design is much simpler, and reduces the overall code 2667and data size of the kernel-resident ACPICA by approximately 5%. Also, it is 2668now possible to obtain the ACPI tables very early during kernel 2669initialization, even before dynamic memory management is initialized. 2670(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 2671 2672Obsolete ACPICA interfaces: 2673 2674- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init 2675time). 2676- AcpiLoadTable: Not needed. 2677- AcpiUnloadTable: Not needed. 2678 2679New ACPICA interfaces: 2680 2681- AcpiInitializeTables: Must be called before the table manager can be used. 2682- AcpiReallocateRootTable: Used to transfer the root table to dynamically 2683allocated memory after it becomes available. 2684- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables 2685in the RSDT/XSDT. 2686 2687Other ACPICA changes: 2688 2689- AcpiGetTableHeader returns the actual mapped table header, not a copy. Use 2690AcpiOsUnmapMemory to free this mapping. 2691- AcpiGetTable returns the actual mapped table. The mapping is managed 2692internally and must not be deleted by the caller. Use of this interface 2693causes no additional dynamic memory allocation. 2694- AcpiFindRootPointer: Support for physical addressing has been eliminated, 2695it appeared to be unused. 2696- The interface to AcpiOsMapMemory has changed to be consistent with the 2697other allocation interfaces. 2698- The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary 2699parameters. 2700- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64- 2701bit platforms. Was previously 64 bits on all platforms. 2702- The interface to the ACPI Global Lock acquire/release macros have changed 2703slightly since ACPICA no longer keeps a local copy of the FACS with a 2704constructed pointer to the actual global lock. 2705 2706Porting to the new table manager: 2707 2708- AcpiInitializeTables: Must be called once, and can be called anytime 2709during the OS initialization process. It allows the host to specify an area 2710of memory to be used to store the internal version of the RSDT/XSDT (root 2711table). This allows the host to access ACPI tables before memory management 2712is initialized and running. 2713- AcpiReallocateRootTable: Can be called after memory management is running 2714to copy the root table to a dynamically allocated array, freeing up the 2715scratch memory specified in the call to AcpiInitializeTables. 2716- AcpiSubsystemInitialize: This existing interface is independent of the 2717Table Manager, and does not have to be called before the Table Manager can 2718be used, it only must be called before the rest of ACPICA can be used. 2719- ACPI Tables: Some changes have been made to the names and structure of the 2720actbl.h and actbl1.h header files and may require changes to existing code. 2721For example, bitfields have been completely removed because of their lack of 2722portability across C compilers. 2723- Update interfaces to the Global Lock acquire/release macros if local 2724versions are used. (see acwin.h) 2725 2726Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 2727 2728New files: tbfind.c 2729 2730Example Code and Data Size: These are the sizes for the OS-independent 2731acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2732debug version of the code includes the debug output trace mechanism and has 2733a much larger code and data size. 2734 2735 Previous Release: 2736 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2737 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2738 Current Release: 2739 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 2740 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 2741 2742 27432) iASL Compiler/Disassembler and Tools: 2744 2745No changes for this release. 2746 2747---------------------------------------- 274821 July 2006. Summary of changes for version 20060721: 2749 27501) ACPI CA Core Subsystem: 2751 2752The full source code for the ASL test suite used to validate the iASL 2753compiler and the ACPICA core subsystem is being released with the ACPICA 2754source for the first time. The source is contained in a separate package and 2755consists of over 1100 files that exercise all ASL/AML operators. The package 2756should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor 2757Suietov) 2758 2759Completed a new design and implementation for support of the ACPI Global 2760Lock. On the OS side, the global lock is now treated as a standard AML 2761mutex. Previously, multiple OS threads could "acquire" the global lock 2762simultaneously. However, this could cause the BIOS to be starved out of the 2763lock - especially in cases such as the Embedded Controller driver where 2764there is a tight coupling between the OS and the BIOS. 2765 2766Implemented an optimization for the ACPI Global Lock interrupt mechanism. 2767The Global Lock interrupt handler no longer queues the execution of a 2768separate thread to signal the global lock semaphore. Instead, the semaphore 2769is signaled directly from the interrupt handler. 2770 2771Implemented support within the AML interpreter for package objects that 2772contain a larger AML length (package list length) than the package element 2773count. In this case, the length of the package is truncated to match the 2774package element count. Some BIOS code apparently modifies the package length 2775on the fly, and this change supports this behavior. Provides compatibility 2776with the MS AML interpreter. (With assistance from Fiodor Suietov) 2777 2778Implemented a temporary fix for the BankValue parameter of a Bank Field to 2779support all constant values, now including the Zero and One opcodes. 2780Evaluation of this parameter must eventually be converted to a full TermArg 2781evaluation. A not-implemented error is now returned (temporarily) for non- 2782constant values for this parameter. 2783 2784Fixed problem reports (Fiodor Suietov) integrated: 2785- Fix for premature object deletion after CopyObject on Operation Region (BZ 2786350) 2787 2788Example Code and Data Size: These are the sizes for the OS-independent 2789acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2790debug version of the code includes the debug output trace mechanism and has 2791a much larger code and data size. 2792 2793 Previous Release: 2794 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 2795 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 2796 Current Release: 2797 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2798 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2799 2800 28012) iASL Compiler/Disassembler and Tools: 2802 2803No changes for this release. 2804 2805---------------------------------------- 280607 July 2006. Summary of changes for version 20060707: 2807 28081) ACPI CA Core Subsystem: 2809 2810Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 2811that do not allow the initialization of address pointers within packed 2812structures - even though the hardware itself may support misaligned 2813transfers. Some of the debug data structures are packed by default to 2814minimize size. 2815 2816Added an error message for the case where AcpiOsGetThreadId() returns zero. 2817A non-zero value is required by the core ACPICA code to ensure the proper 2818operation of AML mutexes and recursive control methods. 2819 2820The DSDT is now the only ACPI table that determines whether the AML 2821interpreter is in 32-bit or 64-bit mode. Not really a functional change, but 2822the hooks for per-table 32/64 switching have been removed from the code. A 2823clarification to the ACPI specification is forthcoming in ACPI 3.0B. 2824 2825Fixed a possible leak of an OwnerID in the error path of 2826AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 2827deletion to a single place in AcpiTbUninstallTable to correct possible leaks 2828when using the AcpiTbDeleteTablesByType interface (with assistance from 2829Lance Ortiz.) 2830 2831Fixed a problem with Serialized control methods where the semaphore 2832associated with the method could be over-signaled after multiple method 2833invocations. 2834 2835Fixed two issues with the locking of the internal namespace data structure. 2836Both the Unload() operator and AcpiUnloadTable interface now lock the 2837namespace during the namespace deletion associated with the table unload 2838(with assistance from Linn Crosetto.) 2839 2840Fixed problem reports (Valery Podrezov) integrated: 2841- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 2842 2843Fixed problem reports (Fiodor Suietov) integrated: 2844- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 2845- On Address Space handler deletion, needless deactivation call (BZ 374) 2846- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375) 2847- Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone 2848(BZ 376) 2849- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 2850- Minimum Length of RSDT should be validated (BZ 379) 2851- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 2852Handler (BZ (380) 2853- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded 2854(BZ 381) 2855 2856Example Code and Data Size: These are the sizes for the OS-independent 2857acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2858debug version of the code includes the debug output trace mechanism and has 2859a much larger code and data size. 2860 2861 Previous Release: 2862 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 2863 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 2864 Current Release: 2865 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2866 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2867 2868 28692) iASL Compiler/Disassembler and Tools: 2870 2871Fixed problem reports: 2872Compiler segfault when ASL contains a long (>1024) String declaration (BZ 2873436) 2874 2875---------------------------------------- 287623 June 2006. Summary of changes for version 20060623: 2877 28781) ACPI CA Core Subsystem: 2879 2880Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 2881allows the type to be customized to the host OS for improved efficiency 2882(since a spinlock is usually a very small object.) 2883 2884Implemented support for "ignored" bits in the ACPI registers. According to 2885the ACPI specification, these bits should be preserved when writing the 2886registers via a read/modify/write cycle. There are 3 bits preserved in this 2887manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 2888 2889Implemented the initial deployment of new OSL mutex interfaces. Since some 2890host operating systems have separate mutex and semaphore objects, this 2891feature was requested. The base code now uses mutexes (and the new mutex 2892interfaces) wherever a binary semaphore was used previously. However, for 2893the current release, the mutex interfaces are defined as macros to map them 2894to the existing semaphore interfaces. Therefore, no OSL changes are required 2895at this time. (See acpiosxf.h) 2896 2897Fixed several problems with the support for the control method SyncLevel 2898parameter. The SyncLevel now works according to the ACPI specification and 2899in concert with the Mutex SyncLevel parameter, since the current SyncLevel 2900is a property of the executing thread. Mutual exclusion for control methods 2901is now implemented with a mutex instead of a semaphore. 2902 2903Fixed three instances of the use of the C shift operator in the bitfield 2904support code (exfldio.c) to avoid the use of a shift value larger than the 2905target data width. The behavior of C compilers is undefined in this case and 2906can cause unpredictable results, and therefore the case must be detected and 2907avoided. (Fiodor Suietov) 2908 2909Added an info message whenever an SSDT or OEM table is loaded dynamically 2910via the Load() or LoadTable() ASL operators. This should improve debugging 2911capability since it will show exactly what tables have been loaded (beyond 2912the tables present in the RSDT/XSDT.) 2913 2914Example Code and Data Size: These are the sizes for the OS-independent 2915acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2916debug version of the code includes the debug output trace mechanism and has 2917a much larger code and data size. 2918 2919 Previous Release: 2920 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 2921 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 2922 Current Release: 2923 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 2924 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 2925 2926 29272) iASL Compiler/Disassembler and Tools: 2928 2929No changes for this release. 2930 2931---------------------------------------- 293208 June 2006. Summary of changes for version 20060608: 2933 29341) ACPI CA Core Subsystem: 2935 2936Converted the locking mutex used for the ACPI hardware to a spinlock. This 2937change should eliminate all problems caused by attempting to acquire a 2938semaphore at interrupt level, and it means that all ACPICA external 2939interfaces that directly access the ACPI hardware can be safely called from 2940interrupt level. OSL code that implements the semaphore interfaces should be 2941able to eliminate any workarounds for being called at interrupt level. 2942 2943Fixed a regression introduced in 20060526 where the ACPI device 2944initialization could be prematurely aborted with an AE_NOT_FOUND if a device 2945did not have an optional _INI method. 2946 2947Fixed an IndexField issue where a write to the Data Register should be 2948limited in size to the AccessSize (width) of the IndexField itself. (BZ 433, 2949Fiodor Suietov) 2950 2951Fixed problem reports (Valery Podrezov) integrated: 2952- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 2953 2954Fixed problem reports (Fiodor Suietov) integrated: 2955- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 2956 2957Removed four global mutexes that were obsolete and were no longer being 2958used. 2959 2960Example Code and Data Size: These are the sizes for the OS-independent 2961acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2962debug version of the code includes the debug output trace mechanism and has 2963a much larger code and data size. 2964 2965 Previous Release: 2966 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 2967 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 2968 Current Release: 2969 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 2970 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 2971 2972 29732) iASL Compiler/Disassembler and Tools: 2974 2975Fixed a fault when using -g option (get tables from registry) on Windows 2976machines. 2977 2978Fixed problem reports integrated: 2979- Generate error if CreateField NumBits parameter is zero. (BZ 405) 2980- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 2981Suietov) 2982- Global table revision override (-r) is ignored (BZ 413) 2983 2984---------------------------------------- 298526 May 2006. Summary of changes for version 20060526: 2986 29871) ACPI CA Core Subsystem: 2988 2989Restructured, flattened, and simplified the internal interfaces for 2990namespace object evaluation - resulting in smaller code, less CPU stack use, 2991and fewer interfaces. (With assistance from Mikhail Kouzmich) 2992 2993Fixed a problem with the CopyObject operator where the first parameter was 2994not typed correctly for the parser, interpreter, compiler, and disassembler. 2995Caused various errors and unexpected behavior. 2996 2997Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 2998produced incorrect results with some C compilers. Since the behavior of C 2999compilers when the shift value is larger than the datatype width is 3000apparently not well defined, the interpreter now detects this condition and 3001simply returns zero as expected in all such cases. (BZ 395) 3002 3003Fixed problem reports (Valery Podrezov) integrated: 3004- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 3005- Allow interpreter to handle nested method declarations (BZ 5361) 3006 3007Fixed problem reports (Fiodor Suietov) integrated: 3008- AcpiTerminate doesn't free debug memory allocation list objects (BZ 355) 3009- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356) 3010- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 3011- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 3012- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 3013- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 3014- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 3015- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 3016- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365) 3017- Status of the Global Initialization Handler call not used (BZ 366) 3018- Incorrect object parameter to Global Initialization Handler (BZ 367) 3019 3020Example Code and Data Size: These are the sizes for the OS-independent 3021acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3022debug version of the code includes the debug output trace mechanism and has 3023a much larger code and data size. 3024 3025 Previous Release: 3026 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 3027 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 3028 Current Release: 3029 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 3030 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 3031 3032 30332) iASL Compiler/Disassembler and Tools: 3034 3035Modified the parser to allow the names IO, DMA, and IRQ to be used as 3036namespace identifiers with no collision with existing resource descriptor 3037macro names. This provides compatibility with other ASL compilers and is 3038most useful for disassembly/recompilation of existing tables without parse 3039errors. (With assistance from Thomas Renninger) 3040 3041Disassembler: fixed an incorrect disassembly problem with the 3042DataTableRegion and CopyObject operators. Fixed a possible fault during 3043disassembly of some Alias operators. 3044 3045---------------------------------------- 304612 May 2006. Summary of changes for version 20060512: 3047 30481) ACPI CA Core Subsystem: 3049 3050Replaced the AcpiOsQueueForExecution interface with a new interface named 3051AcpiOsExecute. The major difference is that the new interface does not have 3052a Priority parameter, this appeared to be useless and has been replaced by a 3053Type parameter. The Type tells the host what type of execution is being 3054requested, such as global lock handler, notify handler, GPE handler, etc. 3055This allows the host to queue and execute the request as appropriate for the 3056request type, possibly using different work queues and different priorities 3057for the various request types. This enables fixes for multithreading 3058deadlock problems such as BZ #5534, and will require changes to all existing 3059OS interface layers. (Alexey Starikovskiy and Bob Moore) 3060 3061Fixed a possible memory leak associated with the support for the so-called 3062"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 3063Suietov) 3064 3065Fixed a problem with the Load() operator where a table load from an 3066operation region could overwrite an internal table buffer by up to 7 bytes 3067and cause alignment faults on IPF systems. (With assistance from Luming Yu) 3068 3069Example Code and Data Size: These are the sizes for the OS-independent 3070acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3071debug version of the code includes the debug output trace mechanism and has 3072a much larger code and data size. 3073 3074 Previous Release: 3075 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 3076 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 3077 Current Release: 3078 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 3079 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 3080 3081 3082 30832) iASL Compiler/Disassembler and Tools: 3084 3085Disassembler: Implemented support to cross reference the internal namespace 3086and automatically generate ASL External() statements for symbols not defined 3087within the current table being disassembled. This will simplify the 3088disassembly and recompilation of interdependent tables such as SSDTs since 3089these statements will no longer have to be added manually. 3090 3091Disassembler: Implemented experimental support to automatically detect 3092invocations of external control methods and generate appropriate External() 3093statements. This is problematic because the AML cannot be correctly parsed 3094until the number of arguments for each control method is known. Currently, 3095standalone method invocations and invocations as the source operand of a 3096Store() statement are supported. 3097 3098Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 3099LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 3100LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 3101more readable and likely closer to the original ASL source. 3102 3103---------------------------------------- 310421 April 2006. Summary of changes for version 20060421: 3105 31061) ACPI CA Core Subsystem: 3107 3108Removed a device initialization optimization introduced in 20051216 where 3109the _STA method was not run unless an _INI was also present for the same 3110device. This optimization could cause problems because it could allow _INI 3111methods to be run within a not-present device subtree. (If a not-present 3112device had no _INI, _STA would not be run, the not-present status would not 3113be discovered, and the children of the device would be incorrectly 3114traversed.) 3115 3116Implemented a new _STA optimization where namespace subtrees that do not 3117contain _INI are identified and ignored during device initialization. 3118Selectively running _STA can significantly improve boot time on large 3119machines (with assistance from Len Brown.) 3120 3121Implemented support for the device initialization case where the returned 3122_STA flags indicate a device not-present but functioning. In this case, _INI 3123is not run, but the device children are examined for presence, as per the 3124ACPI specification. 3125 3126Implemented an additional change to the IndexField support in order to 3127conform to MS behavior. The value written to the Index Register is not 3128simply a byte offset, it is a byte offset in units of the access width of 3129the parent Index Field. (Fiodor Suietov) 3130 3131Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 3132interface is called during the creation of all AML operation regions, and 3133allows the host OS to exert control over what addresses it will allow the 3134AML code to access. Operation Regions whose addresses are disallowed will 3135cause a runtime exception when they are actually accessed (will not affect 3136or abort table loading.) See oswinxf or osunixxf for an example 3137implementation. 3138 3139Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 3140interface allows the host OS to match the various "optional" 3141interface/behavior strings for the _OSI predefined control method as 3142appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 3143for an example implementation. 3144 3145Restructured and corrected various problems in the exception handling code 3146paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 3147(with assistance from Takayoshi Kochi.) 3148 3149Modified the Linux source converter to ignore quoted string literals while 3150converting identifiers from mixed to lower case. This will correct problems 3151with the disassembler and other areas where such strings must not be 3152modified. 3153 3154The ACPI_FUNCTION_* macros no longer require quotes around the function 3155name. This allows the Linux source converter to convert the names, now that 3156the converter ignores quoted strings. 3157 3158Example Code and Data Size: These are the sizes for the OS-independent 3159acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3160debug version of the code includes the debug output trace mechanism and has 3161a much larger code and data size. 3162 3163 Previous Release: 3164 3165 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 3166 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 3167 Current Release: 3168 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 3169 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 3170 3171 31722) iASL Compiler/Disassembler and Tools: 3173 3174Implemented 3 new warnings for iASL, and implemented multiple warning levels 3175(w2 flag). 3176 31771) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not 3178WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 3179check for the possible timeout, a warning is issued. 3180 31812) Useless operators: If an ASL operator does not specify an optional target 3182operand and it also does not use the function return value from the 3183operator, a warning is issued since the operator effectively does nothing. 3184 31853) Unreferenced objects: If a namespace object is created, but never 3186referenced, a warning is issued. This is a warning level 2 since there are 3187cases where this is ok, such as when a secondary table is loaded that uses 3188the unreferenced objects. Even so, care is taken to only flag objects that 3189don't look like they will ever be used. For example, the reserved methods 3190(starting with an underscore) are usually not referenced because it is 3191expected that the OS will invoke them. 3192 3193---------------------------------------- 319431 March 2006. Summary of changes for version 20060331: 3195 31961) ACPI CA Core Subsystem: 3197 3198Implemented header file support for the following additional ACPI tables: 3199ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support, 3200all current and known ACPI tables are now defined in the ACPICA headers and 3201are available for use by device drivers and other software. 3202 3203Implemented support to allow tables that contain ACPI names with invalid 3204characters to be loaded. Previously, this would cause the table load to 3205fail, but since there are several known cases of such tables on existing 3206machines, this change was made to enable ACPI support for them. Also, this 3207matches the behavior of the Microsoft ACPI implementation. 3208 3209Fixed a couple regressions introduced during the memory optimization in the 321020060317 release. The namespace node definition required additional 3211reorganization and an internal datatype that had been changed to 8-bit was 3212restored to 32-bit. (Valery Podrezov) 3213 3214Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 3215could be passed through to AcpiOsReleaseObject which is unexpected. Such 3216null pointers are now trapped and ignored, matching the behavior of the 3217previous implementation before the deployment of AcpiOsReleaseObject. 3218(Valery Podrezov, Fiodor Suietov) 3219 3220Fixed a memory mapping leak during the deletion of a SystemMemory operation 3221region where a cached memory mapping was not deleted. This became a 3222noticeable problem for operation regions that are defined within frequently 3223used control methods. (Dana Meyers) 3224 3225Reorganized the ACPI table header files into two main files: one for the 3226ACPI tables consumed by the ACPICA core, and another for the miscellaneous 3227ACPI tables that are consumed by the drivers and other software. The various 3228FADT definitions were merged into one common section and three different 3229tables (ACPI 1.0, 1.0+, and 2.0) 3230 3231Example Code and Data Size: These are the sizes for the OS-independent 3232acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3233debug version of the code includes the debug output trace mechanism and has 3234a much larger code and data size. 3235 3236 Previous Release: 3237 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 3238 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 3239 Current Release: 3240 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 3241 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 3242 3243 32442) iASL Compiler/Disassembler and Tools: 3245 3246Disassembler: Implemented support to decode and format all non-AML ACPI 3247tables (tables other than DSDTs and SSDTs.) This includes the new tables 3248added to the ACPICA headers, therefore all current and known ACPI tables are 3249supported. 3250 3251Disassembler: The change to allow ACPI names with invalid characters also 3252enables the disassembly of such tables. Invalid characters within names are 3253changed to '*' to make the name printable; the iASL compiler will still 3254generate an error for such names, however, since this is an invalid ACPI 3255character. 3256 3257Implemented an option for AcpiXtract (-a) to extract all tables found in the 3258input file. The default invocation extracts only the DSDTs and SSDTs. 3259 3260Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 3261makefile for the AcpiXtract utility. 3262 3263---------------------------------------- 326417 March 2006. Summary of changes for version 20060317: 3265 32661) ACPI CA Core Subsystem: 3267 3268Implemented the use of a cache object for all internal namespace nodes. 3269Since there are about 1000 static nodes in a typical system, this will 3270decrease memory use for cache implementations that minimize per-allocation 3271overhead (such as a slab allocator.) 3272 3273Removed the reference count mechanism for internal namespace nodes, since it 3274was deemed unnecessary. This reduces the size of each namespace node by 3275about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case, 3276and 32 bytes for the 64-bit case. 3277 3278Optimized several internal data structures to reduce object size on 64-bit 3279platforms by packing data within the 64-bit alignment. This includes the 3280frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 3281instances corresponding to the namespace objects. 3282 3283Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1" 3284and "Windows 2006". 3285 3286Split the allocation tracking mechanism out to a separate file, from 3287utalloc.c to uttrack.c. This mechanism appears to be only useful for 3288application-level code. Kernels may wish to not include uttrack.c in 3289distributions. 3290 3291Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated 3292code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 3293macros.) 3294 3295Code and Data Size: These are the sizes for the acpica.lib produced by the 3296Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3297driver or OSPM code. The debug version of the code includes the debug output 3298trace mechanism and has a much larger code and data size. Note that these 3299values will vary depending on the efficiency of the compiler and the 3300compiler options used during generation. 3301 3302 Previous Release: 3303 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3304 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 3305 Current Release: 3306 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 3307 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 3308 3309 33102) iASL Compiler/Disassembler and Tools: 3311 3312Implemented an ANSI C version of the acpixtract utility. This version will 3313automatically extract the DSDT and all SSDTs from the input acpidump text 3314file and dump the binary output to separate files. It can also display a 3315summary of the input file including the headers for each table found and 3316will extract any single ACPI table, with any signature. (See 3317source/tools/acpixtract) 3318 3319---------------------------------------- 332010 March 2006. Summary of changes for version 20060310: 3321 33221) ACPI CA Core Subsystem: 3323 3324Tagged all external interfaces to the subsystem with the new 3325ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist 3326kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 3327macro. The default definition is NULL. 3328 3329Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId. 3330This allows the host to define this as necessary to simplify kernel 3331integration. The default definition is ACPI_NATIVE_UINT. 3332 3333Fixed two interpreter problems related to error processing, the deletion of 3334objects, and placing invalid pointers onto the internal operator result 3335stack. BZ 6028, 6151 (Valery Podrezov) 3336 3337Increased the reference count threshold where a warning is emitted for large 3338reference counts in order to eliminate unnecessary warnings on systems with 3339large namespaces (especially 64-bit.) Increased the value from 0x400 to 33400x800. 3341 3342Due to universal disagreement as to the meaning of the 'c' in the calloc() 3343function, the ACPI_MEM_CALLOCATE macro has been renamed to 3344ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 3345ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 3346ACPI_FREE. 3347 3348Code and Data Size: These are the sizes for the acpica.lib produced by the 3349Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3350driver or OSPM code. The debug version of the code includes the debug output 3351trace mechanism and has a much larger code and data size. Note that these 3352values will vary depending on the efficiency of the compiler and the 3353compiler options used during generation. 3354 3355 Previous Release: 3356 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 3357 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 3358 Current Release: 3359 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3360 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 3361 3362 33632) iASL Compiler/Disassembler: 3364 3365Disassembler: implemented support for symbolic resource descriptor 3366references. If a CreateXxxxField operator references a fixed offset within a 3367resource descriptor, a name is assigned to the descriptor and the offset is 3368translated to the appropriate resource tag and pathname. The addition of 3369this support brings the disassembled code very close to the original ASL 3370source code and helps eliminate run-time errors when the disassembled code 3371is modified (and recompiled) in such a way as to invalidate the original 3372fixed offsets. 3373 3374Implemented support for a Descriptor Name as the last parameter to the ASL 3375Register() macro. This parameter was inadvertently left out of the ACPI 3376specification, and will be added for ACPI 3.0b. 3377 3378Fixed a problem where the use of the "_OSI" string (versus the full path 3379"\_OSI") caused an internal compiler error. ("No back ptr to op") 3380 3381Fixed a problem with the error message that occurs when an invalid string is 3382used for a _HID object (such as one with an embedded asterisk: "*PNP010A".) 3383The correct message is now displayed. 3384 3385---------------------------------------- 338617 February 2006. Summary of changes for version 20060217: 3387 33881) ACPI CA Core Subsystem: 3389 3390Implemented a change to the IndexField support to match the behavior of the 3391Microsoft AML interpreter. The value written to the Index register is now a 3392byte offset, no longer an index based upon the width of the Data register. 3393This should fix IndexField problems seen on some machines where the Data 3394register is not exactly one byte wide. The ACPI specification will be 3395clarified on this point. 3396 3397Fixed a problem where several resource descriptor types could overrun the 3398internal descriptor buffer due to size miscalculation: VendorShort, 3399VendorLong, and Interrupt. This was noticed on IA64 machines, but could 3400affect all platforms. 3401 3402Fixed a problem where individual resource descriptors were misaligned within 3403the internal buffer, causing alignment faults on IA64 platforms. 3404 3405Code and Data Size: These are the sizes for the acpica.lib produced by the 3406Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3407driver or OSPM code. The debug version of the code includes the debug output 3408trace mechanism and has a much larger code and data size. Note that these 3409values will vary depending on the efficiency of the compiler and the 3410compiler options used during generation. 3411 3412 Previous Release: 3413 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3414 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 3415 Current Release: 3416 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 3417 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 3418 3419 34202) iASL Compiler/Disassembler: 3421 3422Implemented support for new reserved names: _WDG and _WED are Microsoft 3423extensions for Windows Instrumentation Management, _TDL is a new ACPI- 3424defined method (Throttling Depth Limit.) 3425 3426Fixed a problem where a zero-length VendorShort or VendorLong resource 3427descriptor was incorrectly emitted as a descriptor of length one. 3428 3429---------------------------------------- 343010 February 2006. Summary of changes for version 20060210: 3431 34321) ACPI CA Core Subsystem: 3433 3434Removed a couple of extraneous ACPI_ERROR messages that appeared during 3435normal execution. These became apparent after the conversion from 3436ACPI_DEBUG_PRINT. 3437 3438Fixed a problem where the CreateField operator could hang if the BitIndex or 3439NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 3440 3441Fixed a problem where a DeRefOf operation on a buffer object incorrectly 3442failed with an exception. This also fixes a couple of related RefOf and 3443DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 3444 3445Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of 3446AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ 34475480) 3448 3449Implemented a memory cleanup at the end of the execution of each iteration 3450of an AML While() loop, preventing the accumulation of outstanding objects. 3451(Valery Podrezov, BZ 5427) 3452 3453Eliminated a chunk of duplicate code in the object resolution code. (Valery 3454Podrezov, BZ 5336) 3455 3456Fixed several warnings during the 64-bit code generation. 3457 3458The AcpiSrc source code conversion tool now inserts one line of whitespace 3459after an if() statement that is followed immediately by a comment, improving 3460readability of the Linux code. 3461 3462Code and Data Size: The current and previous library sizes for the core 3463subsystem are shown below. These are the code and data sizes for the 3464acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3465values do not include any ACPI driver or OSPM code. The debug version of the 3466code includes the debug output trace mechanism and has a much larger code 3467and data size. Note that these values will vary depending on the efficiency 3468of the compiler and the compiler options used during generation. 3469 3470 Previous Release: 3471 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 3472 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 3473 Current Release: 3474 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3475 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 3476 3477 34782) iASL Compiler/Disassembler: 3479 3480Fixed a problem with the disassembly of a BankField operator with a complex 3481expression for the BankValue parameter. 3482 3483---------------------------------------- 348427 January 2006. Summary of changes for version 20060127: 3485 34861) ACPI CA Core Subsystem: 3487 3488Implemented support in the Resource Manager to allow unresolved namestring 3489references within resource package objects for the _PRT method. This support 3490is in addition to the previously implemented unresolved reference support 3491within the AML parser. If the interpreter slack mode is enabled, these 3492unresolved references will be passed through to the caller as a NULL package 3493entry. 3494 3495Implemented and deployed new macros and functions for error and warning 3496messages across the subsystem. These macros are simpler and generate less 3497code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 3498ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 3499macros remain defined to allow ACPI drivers time to migrate to the new 3500macros. 3501 3502Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the 3503Acquire/Release Lock OSL interfaces. 3504 3505Fixed a problem where Alias ASL operators are sometimes not correctly 3506resolved, in both the interpreter and the iASL compiler. 3507 3508Fixed several problems with the implementation of the ConcatenateResTemplate 3509ASL operator. As per the ACPI specification, zero length buffers are now 3510treated as a single EndTag. One-length buffers always cause a fatal 3511exception. Non-zero length buffers that do not end with a full 2-byte EndTag 3512cause a fatal exception. 3513 3514Fixed a possible structure overwrite in the AcpiGetObjectInfo external 3515interface. (With assistance from Thomas Renninger) 3516 3517Code and Data Size: The current and previous library sizes for the core 3518subsystem are shown below. These are the code and data sizes for the 3519acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3520values do not include any ACPI driver or OSPM code. The debug version of the 3521code includes the debug output trace mechanism and has a much larger code 3522and data size. Note that these values will vary depending on the efficiency 3523of the compiler and the compiler options used during generation. 3524 3525 Previous Release: 3526 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 3527 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 3528 Current Release: 3529 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 3530 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 3531 3532 35332) iASL Compiler/Disassembler: 3534 3535Fixed an internal error that was generated for any forward references to ASL 3536Alias objects. 3537 3538---------------------------------------- 353913 January 2006. Summary of changes for version 20060113: 3540 35411) ACPI CA Core Subsystem: 3542 3543Added 2006 copyright to all module headers and signons. This affects 3544virtually every file in the ACPICA core subsystem, iASL compiler, and the 3545utilities. 3546 3547Enhanced the ACPICA error reporting in order to simplify user migration to 3548the non-debug version of ACPICA. Replaced all instances of the 3549ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug 3550levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 3551respectively. This preserves all error and warning messages in the non-debug 3552version of the ACPICA code (this has been referred to as the "debug lite" 3553option.) Over 200 cases were converted to create a total of over 380 3554error/warning messages across the ACPICA code. This increases the code and 3555data size of the default non-debug version of the code somewhat (about 13K), 3556but all error/warning reporting may be disabled if desired (and code 3557eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 3558configuration option. The size of the debug version of ACPICA remains about 3559the same. 3560 3561Fixed a memory leak within the AML Debugger "Set" command. One object was 3562not properly deleted for every successful invocation of the command. 3563 3564Code and Data Size: The current and previous library sizes for the core 3565subsystem are shown below. These are the code and data sizes for the 3566acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3567values do not include any ACPI driver or OSPM code. The debug version of the 3568code includes the debug output trace mechanism and has a much larger code 3569and data size. Note that these values will vary depending on the efficiency 3570of the compiler and the compiler options used during generation. 3571 3572 Previous Release: 3573 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 3574 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 3575 Current Release: 3576 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 3577 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 3578 3579 35802) iASL Compiler/Disassembler: 3581 3582The compiler now officially supports the ACPI 3.0a specification that was 3583released on December 30, 2005. (Specification is available at www.acpi.info) 3584 3585---------------------------------------- 358616 December 2005. Summary of changes for version 20051216: 3587 35881) ACPI CA Core Subsystem: 3589 3590Implemented optional support to allow unresolved names within ASL Package 3591objects. A null object is inserted in the package when a named reference 3592cannot be located in the current namespace. Enabled via the interpreter 3593slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines 3594that contain such code. 3595 3596Implemented an optimization to the initialization sequence that can improve 3597boot time. During ACPI device initialization, the _STA method is now run if 3598and only if the _INI method exists. The _STA method is used to determine if 3599the device is present; An _INI can only be run if _STA returns present, but 3600it is a waste of time to run the _STA method if the _INI does not exist. 3601(Prototype and assistance from Dong Wei) 3602 3603Implemented use of the C99 uintptr_t for the pointer casting macros if it is 3604available in the current compiler. Otherwise, the default (void *) cast is 3605used as before. 3606 3607Fixed some possible memory leaks found within the execution path of the 3608Break, Continue, If, and CreateField operators. (Valery Podrezov) 3609 3610Fixed a problem introduced in the 20051202 release where an exception is 3611generated during method execution if a control method attempts to declare 3612another method. 3613 3614Moved resource descriptor string constants that are used by both the AML 3615disassembler and AML debugger to the common utilities directory so that 3616these components are independent. 3617 3618Implemented support in the AcpiExec utility (-e switch) to globally ignore 3619exceptions during control method execution (method is not aborted.) 3620 3621Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 3622generation. 3623 3624Code and Data Size: The current and previous library sizes for the core 3625subsystem are shown below. These are the code and data sizes for the 3626acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3627values do not include any ACPI driver or OSPM code. The debug version of the 3628code includes the debug output trace mechanism and has a much larger code 3629and data size. Note that these values will vary depending on the efficiency 3630of the compiler and the compiler options used during generation. 3631 3632 Previous Release: 3633 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3634 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 3635 Current Release: 3636 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 3637 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 3638 3639 36402) iASL Compiler/Disassembler: 3641 3642Fixed a problem where a CPU stack overflow fault could occur if a recursive 3643method call was made from within a Return statement. 3644 3645---------------------------------------- 364602 December 2005. Summary of changes for version 20051202: 3647 36481) ACPI CA Core Subsystem: 3649 3650Modified the parsing of control methods to no longer create namespace 3651objects during the first pass of the parse. Objects are now created only 3652during the execute phase, at the moment the namespace creation operator is 3653encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This 3654should eliminate ALREADY_EXISTS exceptions seen on some machines where 3655reentrant control methods are protected by an AML mutex. The mutex will now 3656correctly block multiple threads from attempting to create the same object 3657more than once. 3658 3659Increased the number of available Owner Ids for namespace object tracking 3660from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on 3661some machines with a large number of ACPI tables (either static or dynamic). 3662 3663Fixed a problem with the AcpiExec utility where a fault could occur when the 3664-b switch (batch mode) is used. 3665 3666Enhanced the namespace dump routine to output the owner ID for each 3667namespace object. 3668 3669Code and Data Size: The current and previous library sizes for the core 3670subsystem are shown below. These are the code and data sizes for the 3671acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3672values do not include any ACPI driver or OSPM code. The debug version of the 3673code includes the debug output trace mechanism and has a much larger code 3674and data size. Note that these values will vary depending on the efficiency 3675of the compiler and the compiler options used during generation. 3676 3677 Previous Release: 3678 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3679 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3680 Current Release: 3681 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3682 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 3683 3684 36852) iASL Compiler/Disassembler: 3686 3687Fixed a parse error during compilation of certain Switch/Case constructs. To 3688simplify the parse, the grammar now allows for multiple Default statements 3689and this error is now detected and flagged during the analysis phase. 3690 3691Disassembler: The disassembly now includes the contents of the original 3692table header within a comment at the start of the file. This includes the 3693name and version of the original ASL compiler. 3694 3695---------------------------------------- 369617 November 2005. Summary of changes for version 20051117: 3697 36981) ACPI CA Core Subsystem: 3699 3700Fixed a problem in the AML parser where the method thread count could be 3701decremented below zero if any errors occurred during the method parse phase. 3702This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines. 3703This also fixed a related regression with the mechanism that detects and 3704corrects methods that cannot properly handle reentrancy (related to the 3705deployment of the new OwnerId mechanism.) 3706 3707Eliminated the pre-parsing of control methods (to detect errors) during 3708table load. Related to the problem above, this was causing unwind issues if 3709any errors occurred during the parse, and it seemed to be overkill. A table 3710load should not be aborted if there are problems with any single control 3711method, thus rendering this feature rather pointless. 3712 3713Fixed a problem with the new table-driven resource manager where an internal 3714buffer overflow could occur for small resource templates. 3715 3716Implemented a new external interface, AcpiGetVendorResource. This interface 3717will find and return a vendor-defined resource descriptor within a _CRS or 3718_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas. 3719 3720Removed the length limit (200) on string objects as per the upcoming ACPI 37213.0A specification. This affects the following areas of the interpreter: 1) 3722any implicit conversion of a Buffer to a String, 2) a String object result 3723of the ASL Concatentate operator, 3) the String object result of the ASL 3724ToString operator. 3725 3726Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER 3727on a semaphore object would incorrectly timeout. This allows the 3728multithreading features of the AcpiExec utility to work properly under 3729Windows. 3730 3731Updated the Linux makefiles for the iASL compiler and AcpiExec to include 3732the recently added file named "utresrc.c". 3733 3734Code and Data Size: The current and previous library sizes for the core 3735subsystem are shown below. These are the code and data sizes for the 3736acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3737values do not include any ACPI driver or OSPM code. The debug version of the 3738code includes the debug output trace mechanism and has a much larger code 3739and data size. Note that these values will vary depending on the efficiency 3740of the compiler and the compiler options used during generation. 3741 3742 Previous Release: 3743 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 3744 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3745 Current Release: 3746 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3747 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3748 3749 37502) iASL Compiler/Disassembler: 3751 3752Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 3753specification. For the iASL compiler, this means that string literals within 3754the source ASL can be of any length. 3755 3756Enhanced the listing output to dump the AML code for resource descriptors 3757immediately after the ASL code for each descriptor, instead of in a block at 3758the end of the entire resource template. 3759 3760Enhanced the compiler debug output to dump the entire original parse tree 3761constructed during the parse phase, before any transforms are applied to the 3762tree. The transformed tree is dumped also. 3763 3764---------------------------------------- 376502 November 2005. Summary of changes for version 20051102: 3766 37671) ACPI CA Core Subsystem: 3768 3769Modified the subsystem initialization sequence to improve GPE support. The 3770GPE initialization has been split into two parts in order to defer execution 3771of the _PRW methods (Power Resources for Wake) until after the hardware is 3772fully initialized and the SCI handler is installed. This allows the _PRW 3773methods to access fields protected by the Global Lock. This will fix systems 3774where a NO_GLOBAL_LOCK exception has been seen during initialization. 3775 3776Converted the ACPI internal object disassemble and display code within the 3777AML debugger to fully table-driven operation, reducing code size and 3778increasing maintainability. 3779 3780Fixed a regression with the ConcatenateResTemplate() ASL operator introduced 3781in the 20051021 release. 3782 3783Implemented support for "local" internal ACPI object types within the 3784debugger "Object" command and the AcpiWalkNamespace external interfaces. 3785These local types include RegionFields, BankFields, IndexFields, Alias, and 3786reference objects. 3787 3788Moved common AML resource handling code into a new file, "utresrc.c". This 3789code is shared by both the Resource Manager and the AML Debugger. 3790 3791Code and Data Size: The current and previous library sizes for the core 3792subsystem are shown below. These are the code and data sizes for the 3793acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3794values do not include any ACPI driver or OSPM code. The debug version of the 3795code includes the debug output trace mechanism and has a much larger code 3796and data size. Note that these values will vary depending on the efficiency 3797of the compiler and the compiler options used during generation. 3798 3799 Previous Release: 3800 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 3801 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 3802 Current Release: 3803 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 3804 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3805 3806 38072) iASL Compiler/Disassembler: 3808 3809Fixed a problem with very large initializer lists (more than 4000 elements) 3810for both Buffer and Package objects where the parse stack could overflow. 3811 3812Enhanced the pre-compile source code scan for non-ASCII characters to ignore 3813characters within comment fields. The scan is now always performed and is no 3814longer optional, detecting invalid characters within a source file 3815immediately rather than during the parse phase or later. 3816 3817Enhanced the ASL grammar definition to force early reductions on all list- 3818style grammar elements so that the overall parse stack usage is greatly 3819reduced. This should improve performance and reduce the possibility of parse 3820stack overflow. 3821 3822Eliminated all reduce/reduce conflicts in the iASL parser generation. Also, 3823with the addition of a %expected statement, the compiler generates from 3824source with no warnings. 3825 3826Fixed a possible segment fault in the disassembler if the input filename 3827does not contain a "dot" extension (Thomas Renninger). 3828 3829---------------------------------------- 383021 October 2005. Summary of changes for version 20051021: 3831 38321) ACPI CA Core Subsystem: 3833 3834Implemented support for the EM64T and other x86-64 processors. This 3835essentially entails recognizing that these processors support non-aligned 3836memory transfers. Previously, all 64-bit processors were assumed to lack 3837hardware support for non-aligned transfers. 3838 3839Completed conversion of the Resource Manager to nearly full table-driven 3840operation. Specifically, the resource conversion code (convert AML to 3841internal format and the reverse) and the debug code to dump internal 3842resource descriptors are fully table-driven, reducing code and data size and 3843improving maintainability. 3844 3845The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word 3846on 64-bit processors instead of a fixed 32-bit word. (With assistance from 3847Alexey Starikovskiy) 3848 3849Implemented support within the resource conversion code for the Type- 3850Specific byte within the various ACPI 3.0 *WordSpace macros. 3851 3852Fixed some issues within the resource conversion code for the type-specific 3853flags for both Memory and I/O address resource descriptors. For Memory, 3854implemented support for the MTP and TTP flags. For I/O, split the TRS and 3855TTP flags into two separate fields. 3856 3857Code and Data Size: The current and previous library sizes for the core 3858subsystem are shown below. These are the code and data sizes for the 3859acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3860values do not include any ACPI driver or OSPM code. The debug version of the 3861code includes the debug output trace mechanism and has a much larger code 3862and data size. Note that these values will vary depending on the efficiency 3863of the compiler and the compiler options used during generation. 3864 3865 Previous Release: 3866 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 3867 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 3868 Current Release: 3869 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 3870 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 3871 3872 3873 38742) iASL Compiler/Disassembler: 3875 3876Relaxed a compiler restriction that disallowed a ResourceIndex byte if the 3877corresponding ResourceSource string was not also present in a resource 3878descriptor declaration. This restriction caused problems with existing 3879AML/ASL code that includes the Index byte without the string. When such AML 3880was disassembled, it could not be compiled without modification. Further, 3881the modified code created a resource template with a different size than the 3882original, breaking code that used fixed offsets into the resource template 3883buffer. 3884 3885Removed a recent feature of the disassembler to ignore a lone ResourceIndex 3886byte. This byte is now emitted if present so that the exact AML can be 3887reproduced when the disassembled code is recompiled. 3888 3889Improved comments and text alignment for the resource descriptor code 3890emitted by the disassembler. 3891 3892Implemented disassembler support for the ACPI 3.0 AccessSize field within a 3893Register() resource descriptor. 3894 3895---------------------------------------- 389630 September 2005. Summary of changes for version 20050930: 3897 38981) ACPI CA Core Subsystem: 3899 3900Completed a major overhaul of the Resource Manager code - specifically, 3901optimizations in the area of the AML/internal resource conversion code. The 3902code has been optimized to simplify and eliminate duplicated code, CPU stack 3903use has been decreased by optimizing function parameters and local 3904variables, and naming conventions across the manager have been standardized 3905for clarity and ease of maintenance (this includes function, parameter, 3906variable, and struct/typedef names.) The update may force changes in some 3907driver code, depending on how resources are handled by the host OS. 3908 3909All Resource Manager dispatch and information tables have been moved to a 3910single location for clarity and ease of maintenance. One new file was 3911created, named "rsinfo.c". 3912 3913The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 3914guarantee that the argument is not evaluated twice, making them less prone 3915to macro side-effects. However, since there exists the possibility of 3916additional stack use if a particular compiler cannot optimize them (such as 3917in the debug generation case), the original macros are optionally available. 3918Note that some invocations of the return_VALUE macro may now cause size 3919mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to 3920eliminate these. (From Randy Dunlap) 3921 3922Implemented a new mechanism to enable debug tracing for individual control 3923methods. A new external interface, AcpiDebugTrace, is provided to enable 3924this mechanism. The intent is to allow the host OS to easily enable and 3925disable tracing for problematic control methods. This interface can be 3926easily exposed to a user or debugger interface if desired. See the file 3927psxface.c for details. 3928 3929AcpiUtCallocate will now return a valid pointer if a length of zero is 3930specified - a length of one is used and a warning is issued. This matches 3931the behavior of AcpiUtAllocate. 3932 3933Code and Data Size: The current and previous library sizes for the core 3934subsystem are shown below. These are the code and data sizes for the 3935acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3936values do not include any ACPI driver or OSPM code. The debug version of the 3937code includes the debug output trace mechanism and has a much larger code 3938and data size. Note that these values will vary depending on the efficiency 3939of the compiler and the compiler options used during generation. 3940 3941 Previous Release: 3942 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 3943 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 3944 Current Release: 3945 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 3946 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 3947 3948 39492) iASL Compiler/Disassembler: 3950 3951A remark is issued if the effective compile-time length of a package or 3952buffer is zero. Previously, this was a warning. 3953 3954---------------------------------------- 395516 September 2005. Summary of changes for version 20050916: 3956 39571) ACPI CA Core Subsystem: 3958 3959Fixed a problem within the Resource Manager where support for the Generic 3960Register descriptor was not fully implemented. This descriptor is now fully 3961recognized, parsed, disassembled, and displayed. 3962 3963Completely restructured the Resource Manager code to utilize table-driven 3964dispatch and lookup, eliminating many of the large switch() statements. This 3965reduces overall subsystem code size and code complexity. Affects the 3966resource parsing and construction, disassembly, and debug dump output. 3967 3968Cleaned up and restructured the debug dump output for all resource 3969descriptors. Improved readability of the output and reduced code size. 3970 3971Fixed a problem where changes to internal data structures caused the 3972optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 3973 3974Code and Data Size: The current and previous library sizes for the core 3975subsystem are shown below. These are the code and data sizes for the 3976acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3977values do not include any ACPI driver or OSPM code. The debug version of the 3978code includes the debug output trace mechanism and has a much larger code 3979and data size. Note that these values will vary depending on the efficiency 3980of the compiler and the compiler options used during generation. 3981 3982 Previous Release: 3983 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 3984 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 3985 Current Release: 3986 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 3987 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 3988 3989 39902) iASL Compiler/Disassembler: 3991 3992Updated the disassembler to automatically insert an EndDependentFn() macro 3993into the ASL stream if this macro is missing in the original AML code, 3994simplifying compilation of the resulting ASL module. 3995 3996Fixed a problem in the disassembler where a disassembled ResourceSource 3997string (within a large resource descriptor) was not surrounded by quotes and 3998not followed by a comma, causing errors when the resulting ASL module was 3999compiled. Also, escape sequences within a ResourceSource string are now 4000handled correctly (especially "\\") 4001 4002---------------------------------------- 400302 September 2005. Summary of changes for version 20050902: 4004 40051) ACPI CA Core Subsystem: 4006 4007Fixed a problem with the internal Owner ID allocation and deallocation 4008mechanisms for control method execution and recursive method invocation. 4009This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 4010messages seen on some systems. Recursive method invocation depth is 4011currently limited to 255. (Alexey Starikovskiy) 4012 4013Completely eliminated all vestiges of support for the "module-level 4014executable code" until this support is fully implemented and debugged. This 4015should eliminate the NO_RETURN_VALUE exceptions seen during table load on 4016some systems that invoke this support. 4017 4018Fixed a problem within the resource manager code where the transaction flags 4019for a 64-bit address descriptor were handled incorrectly in the type- 4020specific flag byte. 4021 4022Consolidated duplicate code within the address descriptor resource manager 4023code, reducing overall subsystem code size. 4024 4025Fixed a fault when using the AML debugger "disassemble" command to 4026disassemble individual control methods. 4027 4028Removed references to the "release_current" directory within the Unix 4029release package. 4030 4031Code and Data Size: The current and previous core subsystem library sizes 4032are shown below. These are the code and data sizes for the acpica.lib 4033produced by the Microsoft Visual C++ 6.0 compiler. These values do not 4034include any ACPI driver or OSPM code. The debug version of the code includes 4035the debug output trace mechanism and has a much larger code and data size. 4036Note that these values will vary depending on the efficiency of the compiler 4037and the compiler options used during generation. 4038 4039 Previous Release: 4040 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4041 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 4042 Current Release: 4043 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 4044 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 4045 4046 40472) iASL Compiler/Disassembler: 4048 4049Implemented an error check for illegal duplicate values in the interrupt and 4050dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 4051Interrupt(). 4052 4053Implemented error checking for the Irq() and IrqNoFlags() macros to detect 4054too many values in the interrupt list (16 max) and invalid values in the 4055list (range 0 - 15) 4056 4057The maximum length string literal within an ASL file is now restricted to 4058200 characters as per the ACPI specification. 4059 4060Fixed a fault when using the -ln option (generate namespace listing). 4061 4062Implemented an error check to determine if a DescriptorName within a 4063resource descriptor has already been used within the current scope. 4064 4065---------------------------------------- 406615 August 2005. Summary of changes for version 20050815: 4067 40681) ACPI CA Core Subsystem: 4069 4070Implemented a full bytewise compare to determine if a table load request is 4071attempting to load a duplicate table. The compare is performed if the table 4072signatures and table lengths match. This will allow different tables with 4073the same OEM Table ID and revision to be loaded - probably against the ACPI 4074specification, but discovered in the field nonetheless. 4075 4076Added the changes.txt logfile to each of the zipped release packages. 4077 4078Code and Data Size: Current and previous core subsystem library sizes are 4079shown below. These are the code and data sizes for the acpica.lib produced 4080by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4081any ACPI driver or OSPM code. The debug version of the code includes the 4082debug output trace mechanism and has a much larger code and data size. Note 4083that these values will vary depending on the efficiency of the compiler and 4084the compiler options used during generation. 4085 4086 Previous Release: 4087 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4088 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 4089 Current Release: 4090 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4091 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 4092 4093 40942) iASL Compiler/Disassembler: 4095 4096Fixed a problem where incorrect AML code could be generated for Package 4097objects if optimization is disabled (via the -oa switch). 4098 4099Fixed a problem with where incorrect AML code is generated for variable- 4100length packages when the package length is not specified and the number of 4101initializer values is greater than 255. 4102 4103 4104---------------------------------------- 410529 July 2005. Summary of changes for version 20050729: 4106 41071) ACPI CA Core Subsystem: 4108 4109Implemented support to ignore an attempt to install/load a particular ACPI 4110table more than once. Apparently there exists BIOS code that repeatedly 4111attempts to load the same SSDT upon certain events. With assistance from 4112Venkatesh Pallipadi. 4113 4114Restructured the main interface to the AML parser in order to correctly 4115handle all exceptional conditions. This will prevent leakage of the OwnerId 4116resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some 4117machines. With assistance from Alexey Starikovskiy. 4118 4119Support for "module level code" has been disabled in this version due to a 4120number of issues that have appeared on various machines. The support can be 4121enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 4122compilation. When the issues are fully resolved, the code will be enabled by 4123default again. 4124 4125Modified the internal functions for debug print support to define the 4126FunctionName parameter as a (const char *) for compatibility with compiler 4127built-in macros such as __FUNCTION__, etc. 4128 4129Linted the entire ACPICA source tree for both 32-bit and 64-bit. 4130 4131Implemented support to display an object count summary for the AML Debugger 4132commands Object and Methods. 4133 4134Code and Data Size: Current and previous core subsystem library sizes are 4135shown below. These are the code and data sizes for the acpica.lib produced 4136by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4137any ACPI driver or OSPM code. The debug version of the code includes the 4138debug output trace mechanism and has a much larger code and data size. Note 4139that these values will vary depending on the efficiency of the compiler and 4140the compiler options used during generation. 4141 4142 Previous Release: 4143 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 4144 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 4145 Current Release: 4146 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4147 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 4148 4149 41502) iASL Compiler/Disassembler: 4151 4152Fixed a regression that appeared in the 20050708 version of the compiler 4153where an error message was inadvertently emitted for invocations of the _OSI 4154reserved control method. 4155 4156---------------------------------------- 415708 July 2005. Summary of changes for version 20050708: 4158 41591) ACPI CA Core Subsystem: 4160 4161The use of the CPU stack in the debug version of the subsystem has been 4162considerably reduced. Previously, a debug structure was declared in every 4163function that used the debug macros. This structure has been removed in 4164favor of declaring the individual elements as parameters to the debug 4165functions. This reduces the cumulative stack use during nested execution of 4166ACPI function calls at the cost of a small increase in the code size of the 4167debug version of the subsystem. With assistance from Alexey Starikovskiy and 4168Len Brown. 4169 4170Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 4171headers to define a macro that will return the current function name at 4172runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by 4173the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 4174compiler-dependent header, the function name is saved on the CPU stack (one 4175pointer per function.) This mechanism is used because apparently there 4176exists no standard ANSI-C defined macro that that returns the function name. 4177 4178Redesigned and reimplemented the "Owner ID" mechanism used to track 4179namespace objects created/deleted by ACPI tables and control method 4180execution. A bitmap is now used to allocate and free the IDs, thus solving 4181the wraparound problem present in the previous implementation. The size of 4182the namespace node descriptor was reduced by 2 bytes as a result (Alexey 4183Starikovskiy). 4184 4185Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield 4186flag definitions within the headers for the predefined ACPI tables. These 4187have been replaced by UINT8_BIT in order to increase the code portability of 4188the subsystem. If the use of UINT8 remains a problem, we may be forced to 4189eliminate bitfields entirely because of a lack of portability. 4190 4191Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This 4192is a frequently used function and this improvement increases the performance 4193of the entire subsystem (Alexey Starikovskiy). 4194 4195Fixed several possible memory leaks and the inverse - premature object 4196deletion (Alexey Starikovskiy). 4197 4198Code and Data Size: Current and previous core subsystem library sizes are 4199shown below. These are the code and data sizes for the acpica.lib produced 4200by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4201any ACPI driver or OSPM code. The debug version of the code includes the 4202debug output trace mechanism and has a much larger code and data size. Note 4203that these values will vary depending on the efficiency of the compiler and 4204the compiler options used during generation. 4205 4206 Previous Release: 4207 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 4208 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 4209 Current Release: 4210 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 4211 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 4212 4213---------------------------------------- 421424 June 2005. Summary of changes for version 20050624: 4215 42161) ACPI CA Core Subsystem: 4217 4218Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 4219the host-defined cache object. This allows the OSL implementation to define 4220and type this object in any manner desired, simplifying the OSL 4221implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 4222Linux, and should be defined in the OS-specific header file for other 4223operating systems as required. 4224 4225Changed the interface to AcpiOsAcquireObject to directly return the 4226requested object as the function return (instead of ACPI_STATUS.) This 4227change was made for performance reasons, since this is the purpose of the 4228interface in the first place. AcpiOsAcquireObject is now similar to the 4229AcpiOsAllocate interface. 4230 4231Implemented a new AML debugger command named Businfo. This command displays 4232information about all devices that have an associate _PRT object. The _ADR, 4233_HID, _UID, and _CID are displayed for these devices. 4234 4235Modified the initialization sequence in AcpiInitializeSubsystem to call the 4236OSL interface AcpiOslInitialize first, before any local initialization. This 4237change was required because the global initialization now calls OSL 4238interfaces. 4239 4240Enhanced the Dump command to display the entire contents of Package objects 4241(including all sub-objects and their values.) 4242 4243Restructured the code base to split some files because of size and/or 4244because the code logically belonged in a separate file. New files are listed 4245below. All makefiles and project files included in the ACPI CA release have 4246been updated. 4247 utilities/utcache.c /* Local cache interfaces */ 4248 utilities/utmutex.c /* Local mutex support */ 4249 utilities/utstate.c /* State object support */ 4250 interpreter/parser/psloop.c /* Main AML parse loop */ 4251 4252Code and Data Size: Current and previous core subsystem library sizes are 4253shown below. These are the code and data sizes for the acpica.lib produced 4254by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4255any ACPI driver or OSPM code. The debug version of the code includes the 4256debug output trace mechanism and has a much larger code and data size. Note 4257that these values will vary depending on the efficiency of the compiler and 4258the compiler options used during generation. 4259 4260 Previous Release: 4261 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 4262 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 4263 Current Release: 4264 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 4265 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 4266 4267 42682) iASL Compiler/Disassembler: 4269 4270Fixed a regression introduced in version 20050513 where the use of a Package 4271object within a Case() statement caused a compile time exception. The 4272original behavior has been restored (a Match() operator is emitted.) 4273 4274---------------------------------------- 427517 June 2005. Summary of changes for version 20050617: 4276 42771) ACPI CA Core Subsystem: 4278 4279Moved the object cache operations into the OS interface layer (OSL) to allow 4280the host OS to handle these operations if desired (for example, the Linux 4281OSL will invoke the slab allocator). This support is optional; the compile 4282time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache 4283code in the ACPI CA core. The new OSL interfaces are shown below. See 4284utalloc.c for an example implementation, and acpiosxf.h for the exact 4285interface definitions. With assistance from Alexey Starikovskiy. 4286 AcpiOsCreateCache 4287 AcpiOsDeleteCache 4288 AcpiOsPurgeCache 4289 AcpiOsAcquireObject 4290 AcpiOsReleaseObject 4291 4292Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return 4293and restore a flags parameter. This fits better with many OS lock models. 4294Note: the current execution state (interrupt handler or not) is no longer 4295passed to these interfaces. If necessary, the OSL must determine this state 4296by itself, a simple and fast operation. With assistance from Alexey 4297Starikovskiy. 4298 4299Fixed a problem in the ACPI table handling where a valid XSDT was assumed 4300present if the revision of the RSDP was 2 or greater. According to the ACPI 4301specification, the XSDT is optional in all cases, and the table manager 4302therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 4303Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain 4304only the RSDT. 4305 4306Fixed an interpreter problem with the Mid() operator in the case of an input 4307string where the resulting output string is of zero length. It now correctly 4308returns a valid, null terminated string object instead of a string object 4309with a null pointer. 4310 4311Fixed a problem with the control method argument handling to allow a store 4312to an Arg object that already contains an object of type Device. The Device 4313object is now correctly overwritten. Previously, an error was returned. 4314 4315 4316Enhanced the debugger Find command to emit object values in addition to the 4317found object pathnames. The output format is the same as the dump namespace 4318command. 4319 4320Enhanced the debugger Set command. It now has the ability to set the value 4321of any Named integer object in the namespace (Previously, only method locals 4322and args could be set.) 4323 4324Code and Data Size: Current and previous core subsystem library sizes are 4325shown below. These are the code and data sizes for the acpica.lib produced 4326by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4327any ACPI driver or OSPM code. The debug version of the code includes the 4328debug output trace mechanism and has a much larger code and data size. Note 4329that these values will vary depending on the efficiency of the compiler and 4330the compiler options used during generation. 4331 4332 Previous Release: 4333 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 4334 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 4335 Current Release: 4336 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 4337 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 4338 4339 43402) iASL Compiler/Disassembler: 4341 4342Fixed a regression in the disassembler where if/else/while constructs were 4343output incorrectly. This problem was introduced in the previous release 4344(20050526). This problem also affected the single-step disassembly in the 4345debugger. 4346 4347Fixed a problem where compiling the reserved _OSI method would randomly (but 4348rarely) produce compile errors. 4349 4350Enhanced the disassembler to emit compilable code in the face of incorrect 4351AML resource descriptors. If the optional ResourceSourceIndex is present, 4352but the ResourceSource is not, do not emit the ResourceSourceIndex in the 4353disassembly. Otherwise, the resulting code cannot be compiled without 4354errors. 4355 4356---------------------------------------- 435726 May 2005. Summary of changes for version 20050526: 4358 43591) ACPI CA Core Subsystem: 4360 4361Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 4362the module level (not within a control method.) These opcodes are executed 4363exactly once at the time the table is loaded. This type of code was legal up 4364until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in 4365order to provide backwards compatibility with earlier BIOS implementations. 4366This eliminates the "Encountered executable code at module level" warning 4367that was previously generated upon detection of such code. 4368 4369Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 4370inadvertently be generated during the lookup of namespace objects in the 4371second pass parse of ACPI tables and control methods. It appears that this 4372problem could occur during the resolution of forward references to namespace 4373objects. 4374 4375Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 4376corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 4377allows the deadlock detection debug code to be compiled out in the normal 4378case, improving mutex performance (and overall subsystem performance) 4379considerably. 4380 4381Implemented a handful of miscellaneous fixes for possible memory leaks on 4382error conditions and error handling control paths. These fixes were 4383suggested by FreeBSD and the Coverity Prevent source code analysis tool. 4384 4385Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c) 4386to prevent a fault in this error case. 4387 4388Code and Data Size: Current and previous core subsystem library sizes are 4389shown below. These are the code and data sizes for the acpica.lib produced 4390by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4391any ACPI driver or OSPM code. The debug version of the code includes the 4392debug output trace mechanism and has a much larger code and data size. Note 4393that these values will vary depending on the efficiency of the compiler and 4394the compiler options used during generation. 4395 4396 Previous Release: 4397 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4398 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4399 Current Release: 4400 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 4401 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 4402 4403 44042) iASL Compiler/Disassembler: 4405 4406Implemented support to allow Type 1 and Type 2 ASL operators to appear at 4407the module level (not within a control method.) These operators will be 4408executed once at the time the table is loaded. This type of code was legal 4409up until the release of ACPI 2.0B (2002) and is now supported by the iASL 4410compiler in order to provide backwards compatibility with earlier BIOS ASL 4411code. 4412 4413The ACPI integer width (specified via the table revision ID or the -r 4414override, 32 or 64 bits) is now used internally during compile-time constant 4415folding to ensure that constants are truncated to 32 bits if necessary. 4416Previously, the revision ID value was only emitted in the AML table header. 4417 4418An error message is now generated for the Mutex and Method operators if the 4419SyncLevel parameter is outside the legal range of 0 through 15. 4420 4421Fixed a problem with the Method operator ParameterTypes list handling (ACPI 44223.0). Previously, more than 2 types or 2 arguments generated a syntax error. 4423The actual underlying implementation of method argument typechecking is 4424still under development, however. 4425 4426---------------------------------------- 442713 May 2005. Summary of changes for version 20050513: 4428 44291) ACPI CA Core Subsystem: 4430 4431Implemented support for PCI Express root bridges -- added support for device 4432PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 4433 4434The interpreter now automatically truncates incoming 64-bit constants to 32 4435bits if currently executing out of a 32-bit ACPI table (Revision < 2). This 4436also affects the iASL compiler constant folding. (Note: as per below, the 4437iASL compiler no longer allows 64-bit constants within 32-bit tables.) 4438 4439Fixed a problem where string and buffer objects with "static" pointers 4440(pointers to initialization data within an ACPI table) were not handled 4441consistently. The internal object copy operation now always copies the data 4442to a newly allocated buffer, regardless of whether the source object is 4443static or not. 4444 4445Fixed a problem with the FromBCD operator where an implicit result 4446conversion was improperly performed while storing the result to the target 4447operand. Since this is an "explicit conversion" operator, the implicit 4448conversion should never be performed on the output. 4449 4450Fixed a problem with the CopyObject operator where a copy to an existing 4451named object did not always completely overwrite the existing object stored 4452at name. Specifically, a buffer-to-buffer copy did not delete the existing 4453buffer. 4454 4455Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and 4456structs for consistency. 4457 4458Code and Data Size: Current and previous core subsystem library sizes are 4459shown below. These are the code and data sizes for the acpica.lib produced 4460by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4461any ACPI driver or OSPM code. The debug version of the code includes the 4462debug output trace mechanism and has a much larger code and data size. Note 4463that these values will vary depending on the efficiency of the compiler and 4464the compiler options used during generation. 4465 4466 Previous Release: 4467 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4468 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4469 Current Release: (Same sizes) 4470 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4471 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4472 4473 44742) iASL Compiler/Disassembler: 4475 4476The compiler now emits a warning if an attempt is made to generate a 64-bit 4477integer constant from within a 32-bit ACPI table (Revision < 2). The integer 4478is truncated to 32 bits. 4479 4480Fixed a problem with large package objects: if the static length of the 4481package is greater than 255, the "variable length package" opcode is 4482emitted. Previously, this caused an error. This requires an update to the 4483ACPI spec, since it currently (incorrectly) states that packages larger than 4484255 elements are not allowed. 4485 4486The disassembler now correctly handles variable length packages and packages 4487larger than 255 elements. 4488 4489---------------------------------------- 449008 April 2005. Summary of changes for version 20050408: 4491 44921) ACPI CA Core Subsystem: 4493 4494Fixed three cases in the interpreter where an "index" argument to an ASL 4495function was still (internally) 32 bits instead of the required 64 bits. 4496This was the Index argument to the Index, Mid, and Match operators. 4497 4498The "strupr" function is now permanently local (AcpiUtStrupr), since this is 4499not a POSIX-defined function and not present in most kernel-level C 4500libraries. All references to the C library strupr function have been removed 4501from the headers. 4502 4503Completed the deployment of static functions/prototypes. All prototypes with 4504the static attribute have been moved from the headers to the owning C file. 4505 4506Implemented an extract option (-e) for the AcpiBin utility (AML binary 4507utility). This option allows the utility to extract individual ACPI tables 4508from the output of AcpiDmp. It provides the same functionality of the 4509acpixtract.pl perl script without the worry of setting the correct perl 4510options. AcpiBin runs on Windows and has not yet been generated/validated in 4511the Linux/Unix environment (but should be soon). 4512 4513Updated and fixed the table dump option for AcpiBin (-d). This option 4514converts a single ACPI table to a hex/ascii file, similar to the output of 4515AcpiDmp. 4516 4517Code and Data Size: Current and previous core subsystem library sizes are 4518shown below. These are the code and data sizes for the acpica.lib produced 4519by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4520any ACPI driver or OSPM code. The debug version of the code includes the 4521debug output trace mechanism and has a much larger code and data size. Note 4522that these values will vary depending on the efficiency of the compiler and 4523the compiler options used during generation. 4524 4525 Previous Release: 4526 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 4527 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 4528 Current Release: 4529 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4530 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4531 4532 45332) iASL Compiler/Disassembler: 4534 4535Disassembler fix: Added a check to ensure that the table length found in the 4536ACPI table header within the input file is not longer than the actual input 4537file size. This indicates some kind of file or table corruption. 4538 4539---------------------------------------- 454029 March 2005. Summary of changes for version 20050329: 4541 45421) ACPI CA Core Subsystem: 4543 4544An error is now generated if an attempt is made to create a Buffer Field of 4545length zero (A CreateField with a length operand of zero.) 4546 4547The interpreter now issues a warning whenever executable code at the module 4548level is detected during ACPI table load. This will give some idea of the 4549prevalence of this type of code. 4550 4551Implemented support for references to named objects (other than control 4552methods) within package objects. 4553 4554Enhanced package object output for the debug object. Package objects are now 4555completely dumped, showing all elements. 4556 4557Enhanced miscellaneous object output for the debug object. Any object can 4558now be written to the debug object (for example, a device object can be 4559written, and the type of the object will be displayed.) 4560 4561The "static" qualifier has been added to all local functions across both the 4562core subsystem and the iASL compiler. 4563 4564The number of "long" lines (> 80 chars) within the source has been 4565significantly reduced, by about 1/3. 4566 4567Cleaned up all header files to ensure that all CA/iASL functions are 4568prototyped (even static functions) and the formatting is consistent. 4569 4570Two new header files have been added, acopcode.h and acnames.h. 4571 4572Removed several obsolete functions that were no longer used. 4573 4574Code and Data Size: Current and previous core subsystem library sizes are 4575shown below. These are the code and data sizes for the acpica.lib produced 4576by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4577any ACPI driver or OSPM code. The debug version of the code includes the 4578debug output trace mechanism and has a much larger code and data size. Note 4579that these values will vary depending on the efficiency of the compiler and 4580the compiler options used during generation. 4581 4582 Previous Release: 4583 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4584 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 4585 Current Release: 4586 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 4587 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 4588 4589 4590 45912) iASL Compiler/Disassembler: 4592 4593Fixed a problem with the resource descriptor generation/support. For the 4594ResourceSourceIndex and the ResourceSource fields, both must be present, or 4595both must be not present - can't have one without the other. 4596 4597The compiler now returns non-zero from the main procedure if any errors have 4598occurred during the compilation. 4599 4600 4601---------------------------------------- 460209 March 2005. Summary of changes for version 20050309: 4603 46041) ACPI CA Core Subsystem: 4605 4606The string-to-buffer implicit conversion code has been modified again after 4607a change to the ACPI specification. In order to match the behavior of the 4608other major ACPI implementation, the target buffer is no longer truncated if 4609the source string is smaller than an existing target buffer. This change 4610requires an update to the ACPI spec, and should eliminate the recent 4611AE_AML_BUFFER_LIMIT issues. 4612 4613The "implicit return" support was rewritten to a new algorithm that solves 4614the general case. Rather than attempt to determine when a method is about to 4615exit, the result of every ASL operator is saved momentarily until the very 4616next ASL operator is executed. Therefore, no matter how the method exits, 4617there will always be a saved implicit return value. This feature is only 4618enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate 4619AE_AML_NO_RETURN_VALUE errors when enabled. 4620 4621Implemented implicit conversion support for the predicate (operand) of the 4622If, Else, and While operators. String and Buffer arguments are automatically 4623converted to Integers. 4624 4625Changed the string-to-integer conversion behavior to match the new ACPI 4626errata: "If no integer object exists, a new integer is created. The ASCII 4627string is interpreted as a hexadecimal constant. Each string character is 4628interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 4629with the first character as the most significant digit, and ending with the 4630first non-hexadecimal character or end-of-string." This means that the first 4631non-hex character terminates the conversion and this is the code that was 4632changed. 4633 4634Fixed a problem where the ObjectType operator would fail (fault) when used 4635on an Index of a Package which pointed to a null package element. The 4636operator now properly returns zero (Uninitialized) in this case. 4637 4638Fixed a problem where the While operator used excessive memory by not 4639properly popping the result stack during execution. There was no memory leak 4640after execution, however. (Code provided by Valery Podrezov.) 4641 4642Fixed a problem where references to control methods within Package objects 4643caused the method to be invoked, instead of producing a reference object 4644pointing to the method. 4645 4646Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to 4647improve performance and reduce code size. (Code provided by Alexey 4648Starikovskiy.) 4649 4650Code and Data Size: Current and previous core subsystem library sizes are 4651shown below. These are the code and data sizes for the acpica.lib produced 4652by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4653any ACPI driver or OSPM code. The debug version of the code includes the 4654debug output trace mechanism and has a much larger code and data size. Note 4655that these values will vary depending on the efficiency of the compiler and 4656the compiler options used during generation. 4657 4658 Previous Release: 4659 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4660 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 4661 Current Release: 4662 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4663 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 4664 4665 46662) iASL Compiler/Disassembler: 4667 4668Fixed a problem with the Return operator with no arguments. Since the AML 4669grammar for the byte encoding requires an operand for the Return opcode, the 4670compiler now emits a Return(Zero) for this case. An ACPI specification 4671update has been written for this case. 4672 4673For tables other than the DSDT, namepath optimization is automatically 4674disabled. This is because SSDTs can be loaded anywhere in the namespace, the 4675compiler has no knowledge of where, and thus cannot optimize namepaths. 4676 4677Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 4678inadvertently omitted from the ACPI specification, and will require an 4679update to the spec. 4680 4681The source file scan for ASCII characters is now optional (-a). This change 4682was made because some vendors place non-ascii characters within comments. 4683However, the scan is simply a brute-force byte compare to ensure all 4684characters in the file are in the range 0x00 to 0x7F. 4685 4686Fixed a problem with the CondRefOf operator where the compiler was 4687inappropriately checking for the existence of the target. Since the point of 4688the operator is to check for the existence of the target at run-time, the 4689compiler no longer checks for the target existence. 4690 4691Fixed a problem where errors generated from the internal AML interpreter 4692during constant folding were not handled properly, causing a fault. 4693 4694Fixed a problem with overly aggressive range checking for the Stall 4695operator. The valid range (max 255) is now only checked if the operand is of 4696type Integer. All other operand types cannot be statically checked. 4697 4698Fixed a problem where control method references within the RefOf, DeRefOf, 4699and ObjectType operators were not treated properly. They are now treated as 4700actual references, not method invocations. 4701 4702Fixed and enhanced the "list namespace" option (-ln). This option was broken 4703a number of releases ago. 4704 4705Improved error handling for the Field, IndexField, and BankField operators. 4706The compiler now cleanly reports and recovers from errors in the field 4707component (FieldUnit) list. 4708 4709Fixed a disassembler problem where the optional ResourceDescriptor fields 4710TRS and TTP were not always handled correctly. 4711 4712Disassembler - Comments in output now use "//" instead of "/*" 4713 4714---------------------------------------- 471528 February 2005. Summary of changes for version 20050228: 4716 47171) ACPI CA Core Subsystem: 4718 4719Fixed a problem where the result of an Index() operator (an object 4720reference) must increment the reference count on the target object for the 4721life of the object reference. 4722 4723Implemented AML Interpreter and Debugger support for the new ACPI 3.0 4724Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace 4725resource descriptors. 4726 4727Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 4728Space Descriptor" string, indicating interpreter support for the descriptors 4729above. 4730 4731Implemented header support for the new ACPI 3.0 FADT flag bits. 4732 4733Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1 4734status/enable registers. 4735 4736Updated header support for the MADT processor local Apic struct and MADT 4737platform interrupt source struct for new ACPI 3.0 fields. 4738 4739Implemented header support for the SRAT and SLIT ACPI tables. 4740 4741Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag 4742at runtime. 4743 4744Code and Data Size: Current and previous core subsystem library sizes are 4745shown below. These are the code and data sizes for the acpica.lib produced 4746by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4747any ACPI driver or OSPM code. The debug version of the code includes the 4748debug output trace mechanism and has a much larger code and data size. Note 4749that these values will vary depending on the efficiency of the compiler and 4750the compiler options used during generation. 4751 4752 Previous Release: 4753 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 4754 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 4755 Current Release: 4756 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4757 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 4758 4759 47602) iASL Compiler/Disassembler: 4761 4762Fixed a problem with the internal 64-bit String-to-integer conversion with 4763strings less than two characters long. 4764 4765Fixed a problem with constant folding where the result of the Index() 4766operator can not be considered a constant. This means that Index() cannot be 4767a type3 opcode and this will require an update to the ACPI specification. 4768 4769Disassembler: Implemented support for the TTP, MTP, and TRS resource 4770descriptor fields. These fields were inadvertently ignored and not output in 4771the disassembly of the resource descriptor. 4772 4773 4774 ---------------------------------------- 477511 February 2005. Summary of changes for version 20050211: 4776 47771) ACPI CA Core Subsystem: 4778 4779Implemented ACPI 3.0 support for implicit conversion within the Match() 4780operator. MatchObjects can now be of type integer, buffer, or string instead 4781of just type integer. Package elements are implicitly converted to the type 4782of the MatchObject. This change aligns the behavior of Match() with the 4783behavior of the other logical operators (LLess(), etc.) It also requires an 4784errata change to the ACPI specification as this support was intended for 4785ACPI 3.0, but was inadvertently omitted. 4786 4787Fixed a problem with the internal implicit "to buffer" conversion. Strings 4788that are converted to buffers will cause buffer truncation if the string is 4789smaller than the target buffer. Integers that are converted to buffers will 4790not cause buffer truncation, only zero extension (both as per the ACPI 4791spec.) The problem was introduced when code was added to truncate the 4792buffer, but this should not be performed in all cases, only the string case. 4793 4794Fixed a problem with the Buffer and Package operators where the interpreter 4795would get confused if two such operators were used as operands to an ASL 4796operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 4797stack was not being popped after the execution of these operators, resulting 4798in an AE_NO_RETURN_VALUE exception. 4799 4800Fixed a problem with constructs of the form Store(Index(...),...). The 4801reference object returned from Index was inadvertently resolved to an actual 4802value. This problem was introduced in version 20050114 when the behavior of 4803Store() was modified to restrict the object types that can be used as the 4804source operand (to match the ACPI specification.) 4805 4806Reduced excessive stack use within the AcpiGetObjectInfo procedure. 4807 4808Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 4809 4810Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 4811 4812Code and Data Size: Current and previous core subsystem library sizes are 4813shown below. These are the code and data sizes for the acpica.lib produced 4814by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4815any ACPI driver or OSPM code. The debug version of the code includes the 4816debug output trace mechanism and has a much larger code and data size. Note 4817that these values will vary depending on the efficiency of the compiler and 4818the compiler options used during generation. 4819 4820 Previous Release: 4821 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 4822 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 4823 Current Release: 4824 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 4825 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 4826 4827 48282) iASL Compiler/Disassembler: 4829 4830Fixed a code generation problem in the constant folding optimization code 4831where incorrect code was generated if a constant was reduced to a buffer 4832object (i.e., a reduced type 5 opcode.) 4833 4834Fixed a typechecking problem for the ToBuffer operator. Caused by an 4835incorrect return type in the internal opcode information table. 4836 4837---------------------------------------- 483825 January 2005. Summary of changes for version 20050125: 4839 48401) ACPI CA Core Subsystem: 4841 4842Fixed a recently introduced problem with the Global Lock where the 4843underlying semaphore was not created. This problem was introduced in 4844version 20050114, and caused an AE_AML_NO_OPERAND exception during an 4845Acquire() operation on _GL. 4846 4847The local object cache is now optional, and is disabled by default. Both 4848AcpiExec and the iASL compiler enable the cache because they run in user 4849mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE 4850to enable the local cache. 4851 4852Fixed an issue in the internal function AcpiUtEvaluateObject concerning the 4853optional "implicit return" support where an error was returned if no return 4854object was expected, but one was implicitly returned. AE_OK is now returned 4855in this case and the implicitly returned object is deleted. 4856AcpiUtEvaluateObject is only occasionally used, and only to execute reserved 4857methods such as _STA and _INI where the return type is known up front. 4858 4859Fixed a few issues with the internal convert-to-integer code. It now returns 4860an error if an attempt is made to convert a null string, a string of only 4861blanks/tabs, or a zero-length buffer. This affects both implicit conversion 4862and explicit conversion via the ToInteger() operator. 4863 4864The internal debug code in AcpiUtAcquireMutex has been commented out. It is 4865not needed for normal operation and should increase the performance of the 4866entire subsystem. The code remains in case it is needed for debug purposes 4867again. 4868 4869The AcpiExec source and makefile are included in the Unix/Linux package for 4870the first time. 4871 4872Code and Data Size: Current and previous core subsystem library sizes are 4873shown below. These are the code and data sizes for the acpica.lib produced 4874by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4875any ACPI driver or OSPM code. The debug version of the code includes the 4876debug output trace mechanism and has a much larger code and data size. Note 4877that these values will vary depending on the efficiency of the compiler and 4878the compiler options used during generation. 4879 4880 Previous Release: 4881 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 4882 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 4883 Current Release: 4884 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 4885 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 4886 48872) iASL Compiler/Disassembler: 4888 4889Switch/Case support: A warning is now issued if the type of the Switch value 4890cannot be determined at compile time. For example, Switch(Arg0) will 4891generate the warning, and the type is assumed to be an integer. As per the 4892ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the 4893warning. 4894 4895Switch/Case support: Implemented support for buffer and string objects as 4896the switch value. This is an ACPI 3.0 feature, now that LEqual supports 4897buffers and strings. 4898 4899Switch/Case support: The emitted code for the LEqual() comparisons now uses 4900the switch value as the first operand, not the second. The case value is now 4901the second operand, and this allows the case value to be implicitly 4902converted to the type of the switch value, not the other way around. 4903 4904Switch/Case support: Temporary variables are now emitted immediately within 4905the control method, not at the global level. This means that there are now 490636 temps available per-method, not 36 temps per-module as was the case with 4907the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 4908 4909---------------------------------------- 491014 January 2005. Summary of changes for version 20050114: 4911 4912Added 2005 copyright to all module headers. This affects every module in 4913the core subsystem, iASL compiler, and the utilities. 4914 49151) ACPI CA Core Subsystem: 4916 4917Fixed an issue with the String-to-Buffer conversion code where the string 4918null terminator was not included in the buffer after conversion, but there 4919is existing ASL that assumes the string null terminator is included. This is 4920the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 4921introduced in the previous version when the code was updated to correctly 4922set the converted buffer size as per the ACPI specification. The ACPI spec 4923is ambiguous and will be updated to specify that the null terminator must be 4924included in the converted buffer. This also affects the ToBuffer() ASL 4925operator. 4926 4927Fixed a problem with the Mid() ASL/AML operator where it did not work 4928correctly on Buffer objects. Newly created sub-buffers were not being marked 4929as initialized. 4930 4931 4932Fixed a problem in AcpiTbFindTable where incorrect string compares were 4933performed on the OemId and OemTableId table header fields. These fields are 4934not null terminated, so strncmp is now used instead of strcmp. 4935 4936Implemented a restriction on the Store() ASL/AML operator to align the 4937behavior with the ACPI specification. Previously, any object could be used 4938as the source operand. Now, the only objects that may be used are Integers, 4939Buffers, Strings, Packages, Object References, and DDB Handles. If 4940necessary, the original behavior can be restored by enabling the 4941EnableInterpreterSlack flag. 4942 4943Enhanced the optional "implicit return" support to allow an implicit return 4944value from methods that are invoked externally via the AcpiEvaluateObject 4945interface. This enables implicit returns from the _STA and _INI methods, 4946for example. 4947 4948Changed the Revision() ASL/AML operator to return the current version of the 4949AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned 4950the supported ACPI version (This is the function of the _REV method). 4951 4952Updated the _REV predefined method to return the currently supported version 4953of ACPI, now 3. 4954 4955Implemented batch mode option for the AcpiExec utility (-b). 4956 4957Code and Data Size: Current and previous core subsystem library sizes are 4958shown below. These are the code and data sizes for the acpica.lib produced 4959by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4960any ACPI driver or OSPM code. The debug version of the code includes the 4961debug output trace mechanism and has a much larger code and data size. Note 4962that these values will vary depending on the efficiency of the compiler and 4963the compiler options used during generation. 4964 4965 Previous Release: 4966 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4967 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 4968 Current Release: 4969 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 4970 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 4971 4972---------------------------------------- 497310 December 2004. Summary of changes for version 20041210: 4974 4975ACPI 3.0 support is nearing completion in both the iASL compiler and the 4976ACPI CA core subsystem. 4977 49781) ACPI CA Core Subsystem: 4979 4980Fixed a problem in the ToDecimalString operator where the resulting string 4981length was incorrectly calculated. The length is now calculated exactly, 4982eliminating incorrect AE_STRING_LIMIT exceptions. 4983 4984Fixed a problem in the ToHexString operator to allow a maximum 200 character 4985string to be produced. 4986 4987Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy 4988routine where the length of the resulting buffer was not truncated to the 4989new size (if the target buffer already existed). 4990 4991Code and Data Size: Current and previous core subsystem library sizes are 4992shown below. These are the code and data sizes for the acpica.lib produced 4993by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4994any ACPI driver or OSPM code. The debug version of the code includes the 4995debug output trace mechanism and has a much larger code and data size. Note 4996that these values will vary depending on the efficiency of the compiler and 4997the compiler options used during generation. 4998 4999 Previous Release: 5000 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5001 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 5002 Current Release: 5003 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5004 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 5005 5006 50072) iASL Compiler/Disassembler: 5008 5009Implemented the new ACPI 3.0 resource template macros - DWordSpace, 5010ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 5011Includes support in the disassembler. 5012 5013Implemented support for the new (ACPI 3.0) parameter to the Register macro, 5014AccessSize. 5015 5016Fixed a problem where the _HE resource name for the Interrupt macro was 5017referencing bit 0 instead of bit 1. 5018 5019Implemented check for maximum 255 interrupts in the Interrupt macro. 5020 5021Fixed a problem with the predefined resource descriptor names where 5022incorrect AML code was generated if the offset within the resource buffer 5023was 0 or 1. The optimizer shortened the AML code to a single byte opcode 5024but did not update the surrounding package lengths. 5025 5026Changes to the Dma macro: All channels within the channel list must be in 5027the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 5028optional (default is BusMaster). 5029 5030Implemented check for maximum 7 data bytes for the VendorShort macro. 5031 5032The ReadWrite parameter is now optional for the Memory32 and similar macros. 5033 5034---------------------------------------- 503503 December 2004. Summary of changes for version 20041203: 5036 50371) ACPI CA Core Subsystem: 5038 5039The low-level field insertion/extraction code (exfldio) has been completely 5040rewritten to eliminate unnecessary complexity, bugs, and boundary 5041conditions. 5042 5043Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString 5044operators where the input operand could be inadvertently deleted if no 5045conversion was necessary (e.g., if the input to ToInteger was an Integer 5046object.) 5047 5048Fixed a problem with the ToDecimalString and ToHexString where an incorrect 5049exception code was returned if the resulting string would be > 200 chars. 5050AE_STRING_LIMIT is now returned. 5051 5052Fixed a problem with the Concatenate operator where AE_OK was always 5053returned, even if the operation failed. 5054 5055Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 5056semaphores to be allocated. 5057 5058Code and Data Size: Current and previous core subsystem library sizes are 5059shown below. These are the code and data sizes for the acpica.lib produced 5060by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5061any ACPI driver or OSPM code. The debug version of the code includes the 5062debug output trace mechanism and has a much larger code and data size. Note 5063that these values will vary depending on the efficiency of the compiler and 5064the compiler options used during generation. 5065 5066 Previous Release: 5067 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5068 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5069 Current Release: 5070 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5071 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 5072 5073 50742) iASL Compiler/Disassembler: 5075 5076Fixed typechecking for the ObjectType and SizeOf operators. Problem was 5077recently introduced in 20041119. 5078 5079Fixed a problem with the ToUUID macro where the upper nybble of each buffer 5080byte was inadvertently set to zero. 5081 5082---------------------------------------- 508319 November 2004. Summary of changes for version 20041119: 5084 50851) ACPI CA Core Subsystem: 5086 5087Fixed a problem in the internal ConvertToInteger routine where new integers 5088were not truncated to 32 bits for 32-bit ACPI tables. This routine converts 5089buffers and strings to integers. 5090 5091Implemented support to store a value to an Index() on a String object. This 5092is an ACPI 2.0 feature that had not yet been implemented. 5093 5094Implemented new behavior for storing objects to individual package elements 5095(via the Index() operator). The previous behavior was to invoke the implicit 5096conversion rules if an object was already present at the index. The new 5097behavior is to simply delete any existing object and directly store the new 5098object. Although the ACPI specification seems unclear on this subject, other 5099ACPI implementations behave in this manner. (This is the root of the 5100AE_BAD_HEX_CONSTANT issue.) 5101 5102Modified the RSDP memory scan mechanism to support the extended checksum for 5103ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 5104RSDP signature is found with a valid checksum. 5105 5106Code and Data Size: Current and previous core subsystem library sizes are 5107shown below. These are the code and data sizes for the acpica.lib produced 5108by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5109any ACPI driver or OSPM code. The debug version of the code includes the 5110debug output trace mechanism and has a much larger code and data size. Note 5111that these values will vary depending on the efficiency of the compiler and 5112the compiler options used during generation. 5113 5114 Previous Release: 5115 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5116 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5117 Current Release: 5118 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5119 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5120 5121 51222) iASL Compiler/Disassembler: 5123 5124Fixed a missing semicolon in the aslcompiler.y file. 5125 5126---------------------------------------- 512705 November 2004. Summary of changes for version 20041105: 5128 51291) ACPI CA Core Subsystem: 5130 5131Implemented support for FADT revision 2. This was an interim table (between 5132ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 5133 5134Implemented optional support to allow uninitialized LocalX and ArgX 5135variables in a control method. The variables are initialized to an Integer 5136object with a value of zero. This support is enabled by setting the 5137AcpiGbl_EnableInterpreterSlack flag to TRUE. 5138 5139Implemented support for Integer objects for the SizeOf operator. Either 4 5140or 8 is returned, depending on the current integer size (32-bit or 64-bit, 5141depending on the parent table revision). 5142 5143Fixed a problem in the implementation of the SizeOf and ObjectType operators 5144where the operand was resolved to a value too early, causing incorrect 5145return values for some objects. 5146 5147Fixed some possible memory leaks during exceptional conditions. 5148 5149Code and Data Size: Current and previous core subsystem library sizes are 5150shown below. These are the code and data sizes for the acpica.lib produced 5151by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5152any ACPI driver or OSPM code. The debug version of the code includes the 5153debug output trace mechanism and has a much larger code and data size. Note 5154that these values will vary depending on the efficiency of the compiler and 5155the compiler options used during generation. 5156 5157 Previous Release: 5158 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5159 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 5160 Current Release: 5161 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5162 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5163 5164 51652) iASL Compiler/Disassembler: 5166 5167Implemented support for all ACPI 3.0 reserved names and methods. 5168 5169Implemented all ACPI 3.0 grammar elements in the front-end, including 5170support for semicolons. 5171 5172Implemented the ACPI 3.0 Function() and ToUUID() macros 5173 5174Fixed a problem in the disassembler where a Scope() operator would not be 5175emitted properly if the target of the scope was in another table. 5176 5177---------------------------------------- 517815 October 2004. Summary of changes for version 20041015: 5179 5180Note: ACPI CA is currently undergoing an in-depth and complete formal 5181evaluation to test/verify the following areas. Other suggestions are 5182welcome. This will result in an increase in the frequency of releases and 5183the number of bug fixes in the next few months. 5184 - Functional tests for all ASL/AML operators 5185 - All implicit/explicit type conversions 5186 - Bit fields and operation regions 5187 - 64-bit math support and 32-bit-only "truncated" math support 5188 - Exceptional conditions, both compiler and interpreter 5189 - Dynamic object deletion and memory leaks 5190 - ACPI 3.0 support when implemented 5191 - External interfaces to the ACPI subsystem 5192 5193 51941) ACPI CA Core Subsystem: 5195 5196Fixed two alignment issues on 64-bit platforms - within debug statements in 5197AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address 5198field within the non-aligned ACPI generic address structure. 5199 5200Fixed a problem in the Increment and Decrement operators where incorrect 5201operand resolution could result in the inadvertent modification of the 5202original integer when the integer is passed into another method as an 5203argument and the arg is then incremented/decremented. 5204 5205Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit 5206BCD number were truncated during conversion. 5207 5208Fixed a problem in the ToDecimal operator where the length of the resulting 5209string could be set incorrectly too long if the input operand was a Buffer 5210object. 5211 5212Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0) 5213within a buffer would prematurely terminate a compare between buffer 5214objects. 5215 5216Added a check for string overflow (>200 characters as per the ACPI 5217specification) during the Concatenate operator with two string operands. 5218 5219Code and Data Size: Current and previous core subsystem library sizes are 5220shown below. These are the code and data sizes for the acpica.lib produced 5221by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5222any ACPI driver or OSPM code. The debug version of the code includes the 5223debug output trace mechanism and has a much larger code and data size. Note 5224that these values will vary depending on the efficiency of the compiler and 5225the compiler options used during generation. 5226 5227 Previous Release: 5228 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5229 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 5230 Current Release: 5231 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5232 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 5233 5234 5235 52362) iASL Compiler/Disassembler: 5237 5238Allow the use of the ObjectType operator on uninitialized Locals and Args 5239(returns 0 as per the ACPI specification). 5240 5241Fixed a problem where the compiler would fault if there was a syntax error 5242in the FieldName of all of the various CreateXXXField operators. 5243 5244Disallow the use of lower case letters within the EISAID macro, as per the 5245ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where 5246U is an uppercase letter and N is a hex digit. 5247 5248 5249---------------------------------------- 525006 October 2004. Summary of changes for version 20041006: 5251 52521) ACPI CA Core Subsystem: 5253 5254Implemented support for the ACPI 3.0 Timer operator. This ASL function 5255implements a 64-bit timer with 100 nanosecond granularity. 5256 5257Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 5258implement the ACPI 3.0 Timer operator. This allows the host OS to implement 5259the timer with the best clock available. Also, it keeps the core subsystem 5260out of the clock handling business, since the host OS (usually) performs 5261this function. 5262 5263Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 5264functions use a 64-bit address which is part of the packed ACPI Generic 5265Address Structure. Since the structure is non-aligned, the alignment macros 5266are now used to extract the address to a local variable before use. 5267 5268Fixed a problem where the ToInteger operator assumed all input strings were 5269hexadecimal. The operator now handles both decimal strings and hex strings 5270(prefixed with "0x"). 5271 5272Fixed a problem where the string length in the string object created as a 5273result of the internal ConvertToString procedure could be incorrect. This 5274potentially affected all implicit conversions and also the ToDecimalString 5275and ToHexString operators. 5276 5277Fixed two problems in the ToString operator. If the length parameter was 5278zero, an incorrect string object was created and the value of the input 5279length parameter was inadvertently changed from zero to Ones. 5280 5281Fixed a problem where the optional ResourceSource string in the ExtendedIRQ 5282resource macro was ignored. 5283 5284Simplified the interfaces to the internal division functions, reducing code 5285size and complexity. 5286 5287Code and Data Size: Current and previous core subsystem library sizes are 5288shown below. These are the code and data sizes for the acpica.lib produced 5289by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5290any ACPI driver or OSPM code. The debug version of the code includes the 5291debug output trace mechanism and has a much larger code and data size. Note 5292that these values will vary depending on the efficiency of the compiler and 5293the compiler options used during generation. 5294 5295 Previous Release: 5296 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 5297 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 5298 Current Release: 5299 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5300 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 5301 5302 53032) iASL Compiler/Disassembler: 5304 5305Implemented support for the ACPI 3.0 Timer operator. 5306 5307Fixed a problem where the Default() operator was inadvertently ignored in a 5308Switch/Case block. This was a problem in the translation of the Switch 5309statement to If...Else pairs. 5310 5311Added support to allow a standalone Return operator, with no parentheses (or 5312operands). 5313 5314Fixed a problem with code generation for the ElseIf operator where the 5315translated Else...If parse tree was improperly constructed leading to the 5316loss of some code. 5317 5318---------------------------------------- 531922 September 2004. Summary of changes for version 20040922: 5320 53211) ACPI CA Core Subsystem: 5322 5323Fixed a problem with the implementation of the LNot() operator where "Ones" 5324was not returned for the TRUE case. Changed the code to return Ones instead 5325of (!Arg) which was usually 1. This change affects iASL constant folding for 5326this operator also. 5327 5328Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not 5329initialized properly -- Now zero the entire buffer in this case where the 5330buffer already exists. 5331 5332Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 5333Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 5334related code considerably. This will require changes/updates to all OS 5335interface layers (OSLs.) 5336 5337Implemented a new external interface, AcpiInstallExceptionHandler, to allow 5338a system exception handler to be installed. This handler is invoked upon any 5339run-time exception that occurs during control method execution. 5340 5341Added support for the DSDT in AcpiTbFindTable. This allows the 5342DataTableRegion() operator to access the local copy of the DSDT. 5343 5344Code and Data Size: Current and previous core subsystem library sizes are 5345shown below. These are the code and data sizes for the acpica.lib produced 5346by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5347any ACPI driver or OSPM code. The debug version of the code includes the 5348debug output trace mechanism and has a much larger code and data size. Note 5349that these values will vary depending on the efficiency of the compiler and 5350the compiler options used during generation. 5351 5352 Previous Release: 5353 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 5354 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 5355 Current Release: 5356 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 5357 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 5358 5359 53602) iASL Compiler/Disassembler: 5361 5362Fixed a problem with constant folding and the LNot operator. LNot was 5363returning 1 in the TRUE case, not Ones as per the ACPI specification. This 5364could result in the generation of an incorrect folded/reduced constant. 5365 5366End-Of-File is now allowed within a "//"-style comment. A parse error no 5367longer occurs if such a comment is at the very end of the input ASL source 5368file. 5369 5370Implemented the "-r" option to override the Revision in the table header. 5371The initial use of this option will be to simplify the evaluation of the AML 5372interpreter by allowing a single ASL source module to be compiled for either 537332-bit or 64-bit integers. 5374 5375 5376---------------------------------------- 537727 August 2004. Summary of changes for version 20040827: 5378 53791) ACPI CA Core Subsystem: 5380 5381- Implemented support for implicit object conversion in the non-numeric 5382logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and 5383LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 5384the second operand is implicitly converted on the fly to match the type of 5385the first operand. For example: 5386 5387 LEqual (Source1, Source2) 5388 5389Source1 and Source2 must each evaluate to an integer, a string, or a buffer. 5390The data type of Source1 dictates the required type of Source2. Source2 is 5391implicitly converted if necessary to match the type of Source1. 5392 5393- Updated and corrected the behavior of the string conversion support. The 5394rules concerning conversion of buffers to strings (according to the ACPI 5395specification) are as follows: 5396 5397ToDecimalString - explicit byte-wise conversion of buffer to string of 5398decimal values (0-255) separated by commas. ToHexString - explicit byte-wise 5399conversion of buffer to string of hex values (0-FF) separated by commas. 5400ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte 5401copy with no transform except NULL terminated. Any other implicit buffer-to- 5402string conversion - byte-wise conversion of buffer to string of hex values 5403(0-FF) separated by spaces. 5404 5405- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 5406 5407- Fixed a problem in AcpiNsGetPathnameLength where the returned length was 5408one byte too short in the case of a node in the root scope. This could 5409cause a fault during debug output. 5410 5411- Code and Data Size: Current and previous core subsystem library sizes are 5412shown below. These are the code and data sizes for the acpica.lib produced 5413by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5414any ACPI driver or OSPM code. The debug version of the code includes the 5415debug output trace mechanism and has a much larger code and data size. Note 5416that these values will vary depending on the efficiency of the compiler and 5417the compiler options used during generation. 5418 5419 Previous Release: 5420 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 5421 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 5422 Current Release: 5423 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 5424 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 5425 5426 54272) iASL Compiler/Disassembler: 5428 5429- Fixed a Linux generation error. 5430 5431 5432---------------------------------------- 543316 August 2004. Summary of changes for version 20040816: 5434 54351) ACPI CA Core Subsystem: 5436 5437Designed and implemented support within the AML interpreter for the so- 5438called "implicit return". This support returns the result of the last ASL 5439operation within a control method, in the absence of an explicit Return() 5440operator. A few machines depend on this behavior, even though it is not 5441explicitly supported by the ASL language. It is optional support that can 5442be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 5443 5444Removed support for the PCI_Config address space from the internal low level 5445hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 5446support was not used internally, and would not work correctly anyway because 5447the PCI bus number and segment number were not supported. There are 5448separate interfaces for PCI configuration space access because of the unique 5449interface. 5450 5451Code and Data Size: Current and previous core subsystem library sizes are 5452shown below. These are the code and data sizes for the acpica.lib produced 5453by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5454any ACPI driver or OSPM code. The debug version of the code includes the 5455debug output trace mechanism and has a much larger code and data size. Note 5456that these values will vary depending on the efficiency of the compiler and 5457the compiler options used during generation. 5458 5459 Previous Release: 5460 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5461 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 5462 Current Release: 5463 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 5464 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 5465 5466 54672) iASL Compiler/Disassembler: 5468 5469Fixed a problem where constants in ASL expressions at the root level (not 5470within a control method) could be inadvertently truncated during code 5471generation. This problem was introduced in the 20040715 release. 5472 5473 5474---------------------------------------- 547515 July 2004. Summary of changes for version 20040715: 5476 54771) ACPI CA Core Subsystem: 5478 5479Restructured the internal HW GPE interfaces to pass/track the current state 5480of interrupts (enabled/disabled) in order to avoid possible deadlock and 5481increase flexibility of the interfaces. 5482 5483Implemented a "lexicographical compare" for String and Buffer objects within 5484the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -- 5485as per further clarification to the ACPI specification. Behavior is similar 5486to C library "strcmp". 5487 5488Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 5489external function. In the 32-bit non-debug case, the stack use has been 5490reduced from 168 bytes to 32 bytes. 5491 5492Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack, 5493whose purpose is to allow the AML interpreter to forgive certain bad AML 5494constructs. Default setting is FALSE. 5495 5496Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO 5497support code. If enabled, it allows field access to go beyond the end of a 5498region definition if the field is within the region length rounded up to the 5499next access width boundary (a common coding error.) 5500 5501Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 5502ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these 5503symbols are lowercased by the latest version of the AcpiSrc tool. 5504 5505The prototypes for the PCI interfaces in acpiosxf.h have been updated to 5506rename "Register" to simply "Reg" to prevent certain compilers from 5507complaining. 5508 5509Code and Data Size: Current and previous core subsystem library sizes are 5510shown below. These are the code and data sizes for the acpica.lib produced 5511by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5512any ACPI driver or OSPM code. The debug version of the code includes the 5513debug output trace mechanism and has a much larger code and data size. Note 5514that these values will vary depending on the efficiency of the compiler and 5515the compiler options used during generation. 5516 5517 Previous Release: 5518 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5519 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 5520 Current Release: 5521 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5522 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 5523 5524 55252) iASL Compiler/Disassembler: 5526 5527Implemented full support for Package objects within the Case() operator. 5528Note: The Break() operator is currently not supported within Case blocks 5529(TermLists) as there is some question about backward compatibility with ACPI 55301.0 interpreters. 5531 5532 5533Fixed a problem where complex terms were not supported properly within the 5534Switch() operator. 5535 5536Eliminated extraneous warning for compiler-emitted reserved names of the 5537form "_T_x". (Used in Switch/Case operators.) 5538 5539Eliminated optimization messages for "_T_x" objects and small constants 5540within the DefinitionBlock operator. 5541 5542 5543---------------------------------------- 554415 June 2004. Summary of changes for version 20040615: 5545 55461) ACPI CA Core Subsystem: 5547 5548Implemented support for Buffer and String objects (as per ACPI 2.0) for the 5549following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 5550LLessEqual. 5551 5552All directory names in the entire source package are lower case, as they 5553were in earlier releases. 5554 5555Implemented "Disassemble" command in the AML debugger that will disassemble 5556a single control method. 5557 5558Code and Data Size: Current and previous core subsystem library sizes are 5559shown below. These are the code and data sizes for the acpica.lib produced 5560by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5561any ACPI driver or OSPM code. The debug version of the code includes the 5562debug output trace mechanism and has a much larger code and data size. Note 5563that these values will vary depending on the efficiency of the compiler and 5564the compiler options used during generation. 5565 5566 Previous Release: 5567 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 5568 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 5569 5570 Current Release: 5571 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5572 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 5573 5574 55752) iASL Compiler/Disassembler: 5576 5577Implemented support for Buffer and String objects (as per ACPI 2.0) for the 5578following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 5579LLessEqual. 5580 5581All directory names in the entire source package are lower case, as they 5582were in earlier releases. 5583 5584Fixed a fault when using the -g or -d<nofilename> options if the FADT was 5585not found. 5586 5587Fixed an issue with the Windows version of the compiler where later versions 5588of Windows place the FADT in the registry under the name "FADT" and not 5589"FACP" as earlier versions did. This applies when using the -g or - 5590d<nofilename> options. The compiler now looks for both strings as 5591necessary. 5592 5593Fixed a problem with compiler namepath optimization where a namepath within 5594the Scope() operator could not be optimized if the namepath was a subpath of 5595the current scope path. 5596 5597---------------------------------------- 559827 May 2004. Summary of changes for version 20040527: 5599 56001) ACPI CA Core Subsystem: 5601 5602Completed a new design and implementation for EBDA (Extended BIOS Data Area) 5603support in the RSDP scan code. The original code improperly scanned for the 5604EBDA by simply scanning from memory location 0 to 0x400. The correct method 5605is to first obtain the EBDA pointer from within the BIOS data area, then 5606scan 1K of memory starting at the EBDA pointer. There appear to be few if 5607any machines that place the RSDP in the EBDA, however. 5608 5609Integrated a fix for a possible fault during evaluation of BufferField 5610arguments. Obsolete code that was causing the problem was removed. 5611 5612Found and fixed a problem in the Field Support Code where data could be 5613corrupted on a bit field read that starts on an aligned boundary but does 5614not end on an aligned boundary. Merged the read/write "datum length" 5615calculation code into a common procedure. 5616 5617Rolled in a couple of changes to the FreeBSD-specific header. 5618 5619 5620Code and Data Size: Current and previous core subsystem library sizes are 5621shown below. These are the code and data sizes for the acpica.lib produced 5622by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5623any ACPI driver or OSPM code. The debug version of the code includes the 5624debug output trace mechanism and has a much larger code and data size. Note 5625that these values will vary depending on the efficiency of the compiler and 5626the compiler options used during generation. 5627 5628 Previous Release: 5629 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5630 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 5631 Current Release: 5632 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 5633 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 5634 5635 56362) iASL Compiler/Disassembler: 5637 5638Fixed a generation warning produced by some overly-verbose compilers for a 563964-bit constant. 5640 5641---------------------------------------- 564214 May 2004. Summary of changes for version 20040514: 5643 56441) ACPI CA Core Subsystem: 5645 5646Fixed a problem where hardware GPE enable bits sometimes not set properly 5647during and after GPE method execution. Result of 04/27 changes. 5648 5649Removed extra "clear all GPEs" when sleeping/waking. 5650 5651Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 5652AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to 5653the new AcpiEv* calls as appropriate. 5654 5655ACPI_OS_NAME was removed from the OS-specific headers. The default name is 5656now "Microsoft Windows NT" for maximum compatibility. However this can be 5657changed by modifying the acconfig.h file. 5658 5659Allow a single invocation of AcpiInstallNotifyHandler for a handler that 5660traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 5661 5662Run _INI methods on ThermalZone objects. This is against the ACPI 5663specification, but there is apparently ASL code in the field that has these 5664_INI methods, and apparently "other" AML interpreters execute them. 5665 5666Performed a full 16/32/64 bit lint that resulted in some small changes. 5667 5668Added a sleep simulation command to the AML debugger to test sleep code. 5669 5670Code and Data Size: Current and previous core subsystem library sizes are 5671shown below. These are the code and data sizes for the acpica.lib produced 5672by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5673any ACPI driver or OSPM code. The debug version of the code includes the 5674debug output trace mechanism and has a much larger code and data size. Note 5675that these values will vary depending on the efficiency of the compiler and 5676the compiler options used during generation. 5677 5678 Previous Release: 5679 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5680 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 5681 Current Release: 5682 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5683 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 5684 5685---------------------------------------- 568627 April 2004. Summary of changes for version 20040427: 5687 56881) ACPI CA Core Subsystem: 5689 5690Completed a major overhaul of the GPE handling within ACPI CA. There are 5691now three types of GPEs: wake-only, runtime-only, and combination wake/run. 5692The only GPEs allowed to be combination wake/run are for button-style 5693devices such as a control-method power button, control-method sleep button, 5694or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not 5695referenced by any _PRW methods are marked for "runtime" and hardware 5696enabled. Any GPE that is referenced by a _PRW method is marked for "wake" 5697(and disabled at runtime). However, at sleep time, only those GPEs that 5698have been specifically enabled for wake via the AcpiEnableGpe interface will 5699actually be hardware enabled. 5700 5701A new external interface has been added, AcpiSetGpeType(), that is meant to 5702be used by device drivers to force a GPE to a particular type. It will be 5703especially useful for the drivers for the button devices mentioned above. 5704 5705Completed restructuring of the ACPI CA initialization sequence so that 5706default operation region handlers are installed before GPEs are initialized 5707and the _PRW methods are executed. This will prevent errors when the _PRW 5708methods attempt to access system memory or I/O space. 5709 5710GPE enable/disable no longer reads the GPE enable register. We now keep the 5711enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 5712thus no longer depend on the hardware to maintain these bits. 5713 5714Always clear the wake status and fixed/GPE status bits before sleep, even 5715for state S5. 5716 5717Improved the AML debugger output for displaying the GPE blocks and their 5718current status. 5719 5720Added new strings for the _OSI method, of the form "Windows 2001 SPx" where 5721x = 0,1,2,3,4. 5722 5723Fixed a problem where the physical address was incorrectly calculated when 5724the Load() operator was used to directly load from an Operation Region (vs. 5725loading from a Field object.) Also added check for minimum table length for 5726this case. 5727 5728Fix for multiple mutex acquisition. Restore original thread SyncLevel on 5729mutex release. 5730 5731Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 5732consistency with the other fields returned. 5733 5734Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 5735structure for each GPE in the system, so the size of this structure is 5736important. 5737 5738CPU stack requirement reduction: Cleaned up the method execution and object 5739evaluation paths so that now a parameter structure is passed, instead of 5740copying the various method parameters over and over again. 5741 5742In evregion.c: Correctly exit and reenter the interpreter region if and 5743only if dispatching an operation region request to a user-installed handler. 5744Do not exit/reenter when dispatching to a default handler (e.g., default 5745system memory or I/O handlers) 5746 5747 5748Notes for updating drivers for the new GPE support. The following changes 5749must be made to ACPI-related device drivers that are attached to one or more 5750GPEs: (This information will be added to the ACPI CA Programmer Reference.) 5751 57521) AcpiInstallGpeHandler no longer automatically enables the GPE, you must 5753explicitly call AcpiEnableGpe. 57542) There is a new interface called AcpiSetGpeType. This should be called 5755before enabling the GPE. Also, this interface will automatically disable 5756the GPE if it is currently enabled. 57573) AcpiEnableGpe no longer supports a GPE type flag. 5758 5759Specific drivers that must be changed: 57601) EC driver: 5761 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 5762AeGpeHandler, NULL); 5763 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 5764 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 5765 57662) Button Drivers (Power, Lid, Sleep): 5767Run _PRW method under parent device 5768If _PRW exists: /* This is a control-method button */ 5769 Extract GPE number and possibly GpeDevice 5770 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 5771 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 5772 5773For all other devices that have _PRWs, we automatically set the GPE type to 5774ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This 5775must be done on a selective basis, usually requiring some kind of user app 5776to allow the user to pick the wake devices. 5777 5778 5779Code and Data Size: Current and previous core subsystem library sizes are 5780shown below. These are the code and data sizes for the acpica.lib produced 5781by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5782any ACPI driver or OSPM code. The debug version of the code includes the 5783debug output trace mechanism and has a much larger code and data size. Note 5784that these values will vary depending on the efficiency of the compiler and 5785the compiler options used during generation. 5786 5787 Previous Release: 5788 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 5789 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 5790 Current Release: 5791 5792 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5793 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 5794 5795 5796 5797---------------------------------------- 579802 April 2004. Summary of changes for version 20040402: 5799 58001) ACPI CA Core Subsystem: 5801 5802Fixed an interpreter problem where an indirect store through an ArgX 5803parameter was incorrectly applying the "implicit conversion rules" during 5804the store. From the ACPI specification: "If the target is a method local or 5805argument (LocalX or ArgX), no conversion is performed and the result is 5806stored directly to the target". The new behavior is to disable implicit 5807conversion during ALL stores to an ArgX. 5808 5809Changed the behavior of the _PRW method scan to ignore any and all errors 5810returned by a given _PRW. This prevents the scan from aborting from the 5811failure of any single _PRW. 5812 5813Moved the runtime configuration parameters from the global init procedure to 5814static variables in acglobal.h. This will allow the host to override the 5815default values easily. 5816 5817Code and Data Size: Current and previous core subsystem library sizes are 5818shown below. These are the code and data sizes for the acpica.lib produced 5819by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5820any ACPI driver or OSPM code. The debug version of the code includes the 5821debug output trace mechanism and has a much larger code and data size. Note 5822that these values will vary depending on the efficiency of the compiler and 5823the compiler options used during generation. 5824 5825 Previous Release: 5826 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 5827 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 5828 Current Release: 5829 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 5830 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 5831 5832 58332) iASL Compiler/Disassembler: 5834 5835iASL now fully disassembles SSDTs. However, External() statements are not 5836generated automatically for unresolved symbols at this time. This is a 5837planned feature for future implementation. 5838 5839Fixed a scoping problem in the disassembler that occurs when the type of the 5840target of a Scope() operator is overridden. This problem caused an 5841incorrectly nested internal namespace to be constructed. 5842 5843Any warnings or errors that are emitted during disassembly are now commented 5844out automatically so that the resulting file can be recompiled without any 5845hand editing. 5846 5847---------------------------------------- 584826 March 2004. Summary of changes for version 20040326: 5849 58501) ACPI CA Core Subsystem: 5851 5852Implemented support for "wake" GPEs via interaction between GPEs and the 5853_PRW methods. Every GPE that is pointed to by one or more _PRWs is 5854identified as a WAKE GPE and by default will no longer be enabled at 5855runtime. Previously, we were blindly enabling all GPEs with a corresponding 5856_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We 5857believe this has been the cause of thousands of "spurious" GPEs on some 5858systems. 5859 5860This new GPE behavior is can be reverted to the original behavior (enable 5861ALL GPEs at runtime) via a runtime flag. 5862 5863Fixed a problem where aliased control methods could not access objects 5864properly. The proper scope within the namespace was not initialized 5865(transferred to the target of the aliased method) before executing the 5866target method. 5867 5868Fixed a potential race condition on internal object deletion on the return 5869object in AcpiEvaluateObject. 5870 5871Integrated a fix for resource descriptors where both _MEM and _MTP were 5872being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 5873wide, 0x0F instead of 0x03.) 5874 5875Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a 5876fault in some cases. 5877 5878Updated Notify() values for debug statements in evmisc.c 5879 5880Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 5881 5882Code and Data Size: Current and previous core subsystem library sizes are 5883shown below. These are the code and data sizes for the acpica.lib produced 5884by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5885any ACPI driver or OSPM code. The debug version of the code includes the 5886debug output trace mechanism and has a much larger code and data size. Note 5887that these values will vary depending on the efficiency of the compiler and 5888the compiler options used during generation. 5889 5890 Previous Release: 5891 5892 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 5893 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 5894 Current Release: 5895 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 5896 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 5897 5898---------------------------------------- 589911 March 2004. Summary of changes for version 20040311: 5900 59011) ACPI CA Core Subsystem: 5902 5903Fixed a problem where errors occurring during the parse phase of control 5904method execution did not abort cleanly. For example, objects created and 5905installed in the namespace were not deleted. This caused all subsequent 5906invocations of the method to return the AE_ALREADY_EXISTS exception. 5907 5908Implemented a mechanism to force a control method to "Serialized" execution 5909if the method attempts to create namespace objects. (The root of the 5910AE_ALREADY_EXISTS problem.) 5911 5912Implemented support for the predefined _OSI "internal" control method. 5913Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and 5914"Windows 2001.1", and can be easily upgraded for new strings as necessary. 5915This feature will allow "other" operating systems to execute the fully 5916tested, "Windows" code path through the ASL code 5917 5918Global Lock Support: Now allows multiple acquires and releases with any 5919internal thread. Removed concept of "owning thread" for this special mutex. 5920 5921Fixed two functions that were inappropriately declaring large objects on the 5922CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during 5923method execution considerably. 5924 5925Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 5926S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 5927 5928Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 5929defined on the machine. 5930 5931Implemented two runtime options: One to force all control method execution 5932to "Serialized" to mimic Windows behavior, another to disable _OSI support 5933if it causes problems on a given machine. 5934 5935Code and Data Size: Current and previous core subsystem library sizes are 5936shown below. These are the code and data sizes for the acpica.lib produced 5937by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5938any ACPI driver or OSPM code. The debug version of the code includes the 5939debug output trace mechanism and has a much larger code and data size. Note 5940that these values will vary depending on the efficiency of the compiler and 5941the compiler options used during generation. 5942 5943 Previous Release: 5944 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 5945 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 5946 Current Release: 5947 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 5948 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 5949 59502) iASL Compiler/Disassembler: 5951 5952Fixed an array size problem for FreeBSD that would cause the compiler to 5953fault. 5954 5955---------------------------------------- 595620 February 2004. Summary of changes for version 20040220: 5957 5958 59591) ACPI CA Core Subsystem: 5960 5961Implemented execution of _SxD methods for Device objects in the 5962GetObjectInfo interface. 5963 5964Fixed calls to _SST method to pass the correct arguments. 5965 5966Added a call to _SST on wake to restore to "working" state. 5967 5968Check for End-Of-Buffer failure case in the WalkResources interface. 5969 5970Integrated fix for 64-bit alignment issue in acglobal.h by moving two 5971structures to the beginning of the file. 5972 5973After wake, clear GPE status register(s) before enabling GPEs. 5974 5975After wake, clear/enable power button. (Perhaps we should clear/enable all 5976fixed events upon wake.) 5977 5978Fixed a couple of possible memory leaks in the Namespace manager. 5979 5980Integrated latest acnetbsd.h file. 5981 5982---------------------------------------- 598311 February 2004. Summary of changes for version 20040211: 5984 5985 59861) ACPI CA Core Subsystem: 5987 5988Completed investigation and implementation of the call-by-reference 5989mechanism for control method arguments. 5990 5991Fixed a problem where a store of an object into an indexed package could 5992fail if the store occurs within a different method than the method that 5993created the package. 5994 5995Fixed a problem where the ToDecimal operator could return incorrect results. 5996 5997Fixed a problem where the CopyObject operator could fail on some of the more 5998obscure objects (e.g., Reference objects.) 5999 6000Improved the output of the Debug object to display buffer, package, and 6001index objects. 6002 6003Fixed a problem where constructs of the form "RefOf (ArgX)" did not return 6004the expected result. 6005 6006Added permanent ACPI_REPORT_ERROR macros for all instances of the 6007ACPI_AML_INTERNAL exception. 6008 6009Integrated latest version of acfreebsd.h 6010 6011---------------------------------------- 601216 January 2004. Summary of changes for version 20040116: 6013 6014The purpose of this release is primarily to update the copyright years in 6015each module, thus causing a huge number of diffs. There are a few small 6016functional changes, however. 6017 60181) ACPI CA Core Subsystem: 6019 6020Improved error messages when there is a problem finding one or more of the 6021required base ACPI tables 6022 6023Reintroduced the definition of APIC_HEADER in actbl.h 6024 6025Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 6026 6027Removed extraneous reference to NewObj in dsmthdat.c 6028 60292) iASL compiler 6030 6031Fixed a problem introduced in December that disabled the correct disassembly 6032of Resource Templates 6033 6034 6035---------------------------------------- 603603 December 2003. Summary of changes for version 20031203: 6037 60381) ACPI CA Core Subsystem: 6039 6040Changed the initialization of Operation Regions during subsystem 6041init to perform two entire walks of the ACPI namespace; The first 6042to initialize the regions themselves, the second to execute the 6043_REG methods. This fixed some interdependencies across _REG 6044methods found on some machines. 6045 6046Fixed a problem where a Store(Local0, Local1) could simply update 6047the object reference count, and not create a new copy of the 6048object if the Local1 is uninitialized. 6049 6050Implemented support for the _SST reserved method during sleep 6051transitions. 6052 6053Implemented support to clear the SLP_TYP and SLP_EN bits when 6054waking up, this is apparently required by some machines. 6055 6056When sleeping, clear the wake status only if SleepState is not S5. 6057 6058Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 6059pointer arithmetic advanced a string pointer too far. 6060 6061Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 6062could be returned if the requested table has not been loaded. 6063 6064Within the support for IRQ resources, restructured the handling of 6065the active and edge/level bits. 6066 6067Fixed a few problems in AcpiPsxExecute() where memory could be 6068leaked under certain error conditions. 6069 6070Improved error messages for the cases where the ACPI mode could 6071not be entered. 6072 6073Code and Data Size: Current and previous core subsystem library 6074sizes are shown below. These are the code and data sizes for the 6075acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6076these values do not include any ACPI driver or OSPM code. The 6077debug version of the code includes the debug output trace 6078mechanism and has a much larger code and data size. Note that 6079these values will vary depending on the efficiency of the compiler 6080and the compiler options used during generation. 6081 6082 Previous Release (20031029): 6083 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 6084 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 6085 Current Release: 6086 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 6087 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 6088 60892) iASL Compiler/Disassembler: 6090 6091Implemented a fix for the iASL disassembler where a bad index was 6092generated. This was most noticeable on 64-bit platforms 6093 6094 6095---------------------------------------- 609629 October 2003. Summary of changes for version 20031029: 6097 60981) ACPI CA Core Subsystem: 6099 6100 6101Fixed a problem where a level-triggered GPE with an associated 6102_Lxx control method was incorrectly cleared twice. 6103 6104Fixed a problem with the Field support code where an access can 6105occur beyond the end-of-region if the field is non-aligned but 6106extends to the very end of the parent region (resulted in an 6107AE_AML_REGION_LIMIT exception.) 6108 6109Fixed a problem with ACPI Fixed Events where an RT Clock handler 6110would not get invoked on an RTC event. The RTC event bitmasks for 6111the PM1 registers were not being initialized properly. 6112 6113Implemented support for executing _STA and _INI methods for 6114Processor objects. Although this is currently not part of the 6115ACPI specification, there is existing ASL code that depends on the 6116init-time execution of these methods. 6117 6118Implemented and deployed a GetDescriptorName function to decode 6119the various types of internal descriptors. Guards against null 6120descriptors during debug output also. 6121 6122Implemented and deployed a GetNodeName function to extract the 4- 6123character namespace node name. This function simplifies the debug 6124and error output, as well as guarding against null pointers during 6125output. 6126 6127Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 6128simplify the debug and error output of 64-bit integers. This 6129macro replaces the HIDWORD and LODWORD macros for dumping these 6130integers. 6131 6132Updated the implementation of the Stall() operator to only call 6133AcpiOsStall(), and also return an error if the operand is larger 6134than 255. This preserves the required behavior of not 6135relinquishing the processor, as would happen if AcpiOsSleep() was 6136called for "long stalls". 6137 6138Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 6139initialized are now treated as NOOPs. 6140 6141Cleaned up a handful of warnings during 64-bit generation. 6142 6143Fixed a reported error where and incorrect GPE number was passed 6144to the GPE dispatch handler. This value is only used for error 6145output, however. Used this opportunity to clean up and streamline 6146the GPE dispatch code. 6147 6148Code and Data Size: Current and previous core subsystem library 6149sizes are shown below. These are the code and data sizes for the 6150acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6151these values do not include any ACPI driver or OSPM code. The 6152 6153debug version of the code includes the debug output trace 6154mechanism and has a much larger code and data size. Note that 6155these values will vary depending on the efficiency of the compiler 6156and the compiler options used during generation. 6157 6158 Previous Release (20031002): 6159 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 6160 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 6161 Current Release: 6162 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 6163 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 6164 6165 61662) iASL Compiler/Disassembler: 6167 6168Updated the iASL compiler to return an error if the operand to the 6169Stall() operator is larger than 255. 6170 6171 6172---------------------------------------- 617302 October 2003. Summary of changes for version 20031002: 6174 6175 61761) ACPI CA Core Subsystem: 6177 6178Fixed a problem with Index Fields where the index was not 6179incremented for fields that require multiple writes to the 6180index/data registers (Fields that are wider than the data 6181register.) 6182 6183Fixed a problem with all Field objects where a write could go 6184beyond the end-of-field if the field was larger than the access 6185granularity and therefore required multiple writes to complete the 6186request. An extra write beyond the end of the field could happen 6187inadvertently. 6188 6189Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 6190would incorrectly be returned if the width of the Data Register 6191was larger than the specified field access width. 6192 6193Completed fixes for LoadTable() and Unload() and verified their 6194operation. Implemented full support for the "DdbHandle" object 6195throughout the ACPI CA subsystem. 6196 6197Implemented full support for the MADT and ECDT tables in the ACPI 6198CA header files. Even though these tables are not directly 6199consumed by ACPI CA, the header definitions are useful for ACPI 6200device drivers. 6201 6202Integrated resource descriptor fixes posted to the Linux ACPI 6203list. This included checks for minimum descriptor length, and 6204support for trailing NULL strings within descriptors that have 6205optional string elements. 6206 6207Code and Data Size: Current and previous core subsystem library 6208sizes are shown below. These are the code and data sizes for the 6209acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6210these values do not include any ACPI driver or OSPM code. The 6211debug version of the code includes the debug output trace 6212mechanism and has a much larger code and data size. Note that 6213these values will vary depending on the efficiency of the compiler 6214and the compiler options used during generation. 6215 6216 Previous Release (20030918): 6217 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 6218 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 6219 Current Release: 6220 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 6221 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 6222 6223 62242) iASL Compiler: 6225 6226Implemented detection of non-ASCII characters within the input 6227source ASL file. This catches attempts to compile binary (AML) 6228files early in the compile, with an informative error message. 6229 6230Fixed a problem where the disassembler would fault if the output 6231filename could not be generated or if the output file could not be 6232opened. 6233 6234---------------------------------------- 623518 September 2003. Summary of changes for version 20030918: 6236 6237 62381) ACPI CA Core Subsystem: 6239 6240Found and fixed a longstanding problem with the late execution of 6241the various deferred AML opcodes (such as Operation Regions, 6242Buffer Fields, Buffers, and Packages). If the name string 6243specified for the name of the new object placed the object in a 6244scope other than the current scope, the initialization/execution 6245of the opcode failed. The solution to this problem was to 6246implement a mechanism where the late execution of such opcodes 6247does not attempt to lookup/create the name a second time in an 6248incorrect scope. This fixes the "region size computed 6249incorrectly" problem. 6250 6251Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 6252Global Lock AE_BAD_PARAMETER error. 6253 6254Fixed several 64-bit issues with prototypes, casting and data 6255types. 6256 6257Removed duplicate prototype from acdisasm.h 6258 6259Fixed an issue involving EC Operation Region Detach (Shaohua Li) 6260 6261Code and Data Size: Current and previous core subsystem library 6262sizes are shown below. These are the code and data sizes for the 6263acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6264these values do not include any ACPI driver or OSPM code. The 6265debug version of the code includes the debug output trace 6266mechanism and has a much larger code and data size. Note that 6267these values will vary depending on the efficiency of the compiler 6268and the compiler options used during generation. 6269 6270 Previous Release: 6271 6272 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 6273 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 6274 Current Release: 6275 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 6276 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 6277 6278 62792) Linux: 6280 6281Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 6282correct sleep time in seconds. 6283 6284---------------------------------------- 628514 July 2003. Summary of changes for version 20030619: 6286 62871) ACPI CA Core Subsystem: 6288 6289Parse SSDTs in order discovered, as opposed to reverse order 6290(Hrvoje Habjanic) 6291 6292Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 6293Klausner, 6294 Nate Lawson) 6295 6296 62972) Linux: 6298 6299Dynamically allocate SDT list (suggested by Andi Kleen) 6300 6301proc function return value cleanups (Andi Kleen) 6302 6303Correctly handle NMI watchdog during long stalls (Andrew Morton) 6304 6305Make it so acpismp=force works (reported by Andrew Morton) 6306 6307 6308---------------------------------------- 630919 June 2003. Summary of changes for version 20030619: 6310 63111) ACPI CA Core Subsystem: 6312 6313Fix To/FromBCD, eliminating the need for an arch-specific #define. 6314 6315Do not acquire a semaphore in the S5 shutdown path. 6316 6317Fix ex_digits_needed for 0. (Takayoshi Kochi) 6318 6319Fix sleep/stall code reversal. (Andi Kleen) 6320 6321Revert a change having to do with control method calling 6322semantics. 6323 63242) Linux: 6325 6326acpiphp update (Takayoshi Kochi) 6327 6328Export acpi_disabled for sonypi (Stelian Pop) 6329 6330Mention acpismp=force in config help 6331 6332Re-add acpitable.c and acpismp=force. This improves backwards 6333 6334compatibility and also cleans up the code to a significant degree. 6335 6336Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 6337 6338---------------------------------------- 633922 May 2003. Summary of changes for version 20030522: 6340 63411) ACPI CA Core Subsystem: 6342 6343Found and fixed a reported problem where an AE_NOT_FOUND error 6344occurred occasionally during _BST evaluation. This turned out to 6345be an Owner ID allocation issue where a called method did not get 6346a new ID assigned to it. Eventually, (after 64k calls), the Owner 6347ID UINT16 would wraparound so that the ID would be the same as the 6348caller's and the called method would delete the caller's 6349namespace. 6350 6351Implemented extended error reporting for control methods that are 6352aborted due to a run-time exception. Output includes the exact 6353AML instruction that caused the method abort, a dump of the method 6354locals and arguments at the time of the abort, and a trace of all 6355nested control method calls. 6356 6357Modified the interpreter to allow the creation of buffers of zero 6358length from the AML code. Implemented new code to ensure that no 6359attempt is made to actually allocate a memory buffer (of length 6360zero) - instead, a simple buffer object with a NULL buffer pointer 6361and length zero is created. A warning is no longer issued when 6362the AML attempts to create a zero-length buffer. 6363 6364Implemented a workaround for the "leading asterisk issue" in 6365_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 6366asterisk is automatically removed if present in any HID, UID, or 6367CID strings. The iASL compiler will still flag this asterisk as 6368an error, however. 6369 6370Implemented full support for _CID methods that return a package of 6371multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 6372now additionally returns a device _CID list if present. This 6373required a change to the external interface in order to pass an 6374ACPI_BUFFER object as a parameter since the _CID list is of 6375variable length. 6376 6377Fixed a problem with the new AE_SAME_HANDLER exception where 6378handler initialization code did not know about this exception. 6379 6380Code and Data Size: Current and previous core subsystem library 6381sizes are shown below. These are the code and data sizes for the 6382acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6383these values do not include any ACPI driver or OSPM code. The 6384debug version of the code includes the debug output trace 6385mechanism and has a much larger code and data size. Note that 6386these values will vary depending on the efficiency of the compiler 6387and the compiler options used during generation. 6388 6389 Previous Release (20030509): 6390 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 6391 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 6392 Current Release: 6393 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 6394 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 6395 6396 63972) Linux: 6398 6399Fixed a bug in which we would reinitialize the ACPI interrupt 6400after it was already working, thus disabling all ACPI and the IRQs 6401for any other device sharing the interrupt. (Thanks to Stian 6402Jordet) 6403 6404Toshiba driver update (John Belmonte) 6405 6406Return only 0 or 1 for our interrupt handler status (Andrew 6407Morton) 6408 6409 64103) iASL Compiler: 6411 6412Fixed a reported problem where multiple (nested) ElseIf() 6413statements were not handled correctly by the compiler, resulting 6414in incorrect warnings and incorrect AML code. This was a problem 6415in both the ASL parser and the code generator. 6416 6417 64184) Documentation: 6419 6420Added changes to existing interfaces, new exception codes, and new 6421text concerning reference count object management versus garbage 6422collection. 6423 6424---------------------------------------- 642509 May 2003. Summary of changes for version 20030509. 6426 6427 64281) ACPI CA Core Subsystem: 6429 6430Changed the subsystem initialization sequence to hold off 6431installation of address space handlers until the hardware has been 6432initialized and the system has entered ACPI mode. This is because 6433the installation of space handlers can cause _REG methods to be 6434run. Previously, the _REG methods could potentially be run before 6435ACPI mode was enabled. 6436 6437Fixed some memory leak issues related to address space handler and 6438notify handler installation. There were some problems with the 6439reference count mechanism caused by the fact that the handler 6440objects are shared across several namespace objects. 6441 6442Fixed a reported problem where reference counts within the 6443namespace were not properly updated when named objects created by 6444method execution were deleted. 6445 6446Fixed a reported problem where multiple SSDTs caused a deletion 6447issue during subsystem termination. Restructured the table data 6448structures to simplify the linked lists and the related code. 6449 6450Fixed a problem where the table ID associated with secondary 6451tables (SSDTs) was not being propagated into the namespace objects 6452created by those tables. This would only present a problem for 6453tables that are unloaded at run-time, however. 6454 6455Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 6456type as the length parameter (instead of UINT32). 6457 6458Solved a long-standing problem where an ALREADY_EXISTS error 6459appears on various systems. This problem could happen when there 6460are multiple PCI_Config operation regions under a single PCI root 6461bus. This doesn't happen very frequently, but there are some 6462systems that do this in the ASL. 6463 6464Fixed a reported problem where the internal DeleteNode function 6465was incorrectly handling the case where a namespace node was the 6466first in the parent's child list, and had additional peers (not 6467the only child, but first in the list of children.) 6468 6469Code and Data Size: Current core subsystem library sizes are shown 6470below. These are the code and data sizes for the acpica.lib 6471produced by the Microsoft Visual C++ 6.0 compiler, and these 6472values do not include any ACPI driver or OSPM code. The debug 6473version of the code includes the debug output trace mechanism and 6474has a much larger code and data size. Note that these values will 6475vary depending on the efficiency of the compiler and the compiler 6476options used during generation. 6477 6478 Previous Release 6479 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 6480 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 6481 Current Release: 6482 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 6483 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 6484 6485 64862) Linux: 6487 6488Allow ":" in OS override string (Ducrot Bruno) 6489 6490Kobject fix (Greg KH) 6491 6492 64933 iASL Compiler/Disassembler: 6494 6495Fixed a problem in the generation of the C source code files (AML 6496is emitted in C source statements for BIOS inclusion) where the 6497Ascii dump that appears within a C comment at the end of each line 6498could cause a compile time error if the AML sequence happens to 6499have an open comment or close comment sequence embedded. 6500 6501 6502---------------------------------------- 650324 April 2003. Summary of changes for version 20030424. 6504 6505 65061) ACPI CA Core Subsystem: 6507 6508Support for big-endian systems has been implemented. Most of the 6509support has been invisibly added behind big-endian versions of the 6510ACPI_MOVE_* macros. 6511 6512Fixed a problem in AcpiHwDisableGpeBlock() and 6513AcpiHwClearGpeBlock() where an incorrect offset was passed to the 6514low level hardware write routine. The offset parameter was 6515actually eliminated from the low level read/write routines because 6516they had become obsolete. 6517 6518Fixed a problem where a handler object was deleted twice during 6519the removal of a fixed event handler. 6520 6521 65222) Linux: 6523 6524A fix for SMP systems with link devices was contributed by 6525 6526Compaq's Dan Zink. 6527 6528(2.5) Return whether we handled the interrupt in our IRQ handler. 6529(Linux ISRs no longer return void, so we can propagate the handler 6530return value from the ACPI CA core back to the OS.) 6531 6532 6533 65343) Documentation: 6535 6536The ACPI CA Programmer Reference has been updated to reflect new 6537interfaces and changes to existing interfaces. 6538 6539---------------------------------------- 654028 March 2003. Summary of changes for version 20030328. 6541 65421) ACPI CA Core Subsystem: 6543 6544The GPE Block Device support has been completed. New interfaces 6545are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 6546interfaces (enable, disable, clear, getstatus) have been split 6547into separate interfaces for Fixed Events and General Purpose 6548Events (GPEs) in order to support GPE Block Devices properly. 6549 6550Fixed a problem where the error message "Failed to acquire 6551semaphore" would appear during operations on the embedded 6552controller (EC). 6553 6554Code and Data Size: Current core subsystem library sizes are shown 6555below. These are the code and data sizes for the acpica.lib 6556produced by the Microsoft Visual C++ 6.0 compiler, and these 6557values do not include any ACPI driver or OSPM code. The debug 6558version of the code includes the debug output trace mechanism and 6559has a much larger code and data size. Note that these values will 6560vary depending on the efficiency of the compiler and the compiler 6561options used during generation. 6562 6563 Previous Release 6564 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 6565 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 6566 Current Release: 6567 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 6568 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 6569 6570 6571---------------------------------------- 657228 February 2003. Summary of changes for version 20030228. 6573 6574 65751) ACPI CA Core Subsystem: 6576 6577The GPE handling and dispatch code has been completely overhauled 6578in preparation for support of GPE Block Devices (ID ACPI0006). 6579This affects internal data structures and code only; there should 6580be no differences visible externally. One new file has been 6581added, evgpeblk.c 6582 6583The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 6584fields that are used to determine the GPE block lengths. The 6585REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 6586structures are ignored. This is per the ACPI specification but it 6587isn't very clear. The full 256 Block 0/1 GPEs are now supported 6588(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 6589 6590In the SCI interrupt handler, removed the read of the PM1_CONTROL 6591register to look at the SCI_EN bit. On some machines, this read 6592causes an SMI event and greatly slows down SCI events. (This may 6593in fact be the cause of slow battery status response on some 6594systems.) 6595 6596Fixed a problem where a store of a NULL string to a package object 6597could cause the premature deletion of the object. This was seen 6598during execution of the battery _BIF method on some systems, 6599resulting in no battery data being returned. 6600 6601Added AcpiWalkResources interface to simplify parsing of resource 6602lists. 6603 6604Code and Data Size: Current core subsystem library sizes are shown 6605below. These are the code and data sizes for the acpica.lib 6606produced by the Microsoft Visual C++ 6.0 compiler, and these 6607values do not include any ACPI driver or OSPM code. The debug 6608version of the code includes the debug output trace mechanism and 6609has a much larger code and data size. Note that these values will 6610vary depending on the efficiency of the compiler and the compiler 6611options used during generation. 6612 6613 Previous Release 6614 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6615 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6616 Current Release: 6617 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 6618 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 6619 6620 66212) Linux 6622 6623S3 fixes (Ole Rohne) 6624 6625Update ACPI PHP driver with to use new acpi_walk_resource API 6626(Bjorn Helgaas) 6627 6628Add S4BIOS support (Pavel Machek) 6629 6630Map in entire table before performing checksum (John Stultz) 6631 6632Expand the mem= cmdline to allow the specification of reserved and 6633ACPI DATA blocks (Pavel Machek) 6634 6635Never use ACPI on VISWS 6636 6637Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 6638 6639Revert a change that allowed P_BLK lengths to be 4 or 5. This is 6640causing us to think that some systems support C2 when they really 6641don't. 6642 6643Do not count processor objects for non-present CPUs (Thanks to 6644Dominik Brodowski) 6645 6646 66473) iASL Compiler: 6648 6649Fixed a problem where ASL include files could not be found and 6650opened. 6651 6652Added support for the _PDC reserved name. 6653 6654 6655---------------------------------------- 665622 January 2003. Summary of changes for version 20030122. 6657 6658 66591) ACPI CA Core Subsystem: 6660 6661Added a check for constructs of the form: Store (Local0, Local0) 6662where Local0 is not initialized. Apparently, some BIOS 6663programmers believe that this is a NOOP. Since this store doesn't 6664do anything anyway, the new prototype behavior will ignore this 6665error. This is a case where we can relax the strict checking in 6666the interpreter in the name of compatibility. 6667 6668 66692) Linux 6670 6671The AcpiSrc Source Conversion Utility has been released with the 6672Linux package for the first time. This is the utility that is 6673used to convert the ACPI CA base source code to the Linux version. 6674 6675(Both) Handle P_BLK lengths shorter than 6 more gracefully 6676 6677(Both) Move more headers to include/acpi, and delete an unused 6678header. 6679 6680(Both) Move drivers/acpi/include directory to include/acpi 6681 6682(Both) Boot functions don't use cmdline, so don't pass it around 6683 6684(Both) Remove include of unused header (Adrian Bunk) 6685 6686(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 6687the 6688former now also includes the latter, acpiphp.h only needs the one, 6689now. 6690 6691(2.5) Make it possible to select method of bios restoring after S3 6692resume. [=> no more ugly ifdefs] (Pavel Machek) 6693 6694(2.5) Make proc write interfaces work (Pavel Machek) 6695 6696(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 6697 6698(2.5) Break out ACPI Perf code into its own module, under cpufreq 6699(Dominik Brodowski) 6700 6701(2.4) S4BIOS support (Ducrot Bruno) 6702 6703(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 6704Visinoni) 6705 6706 67073) iASL Compiler: 6708 6709Added support to disassemble SSDT and PSDTs. 6710 6711Implemented support to obtain SSDTs from the Windows registry if 6712available. 6713 6714 6715---------------------------------------- 671609 January 2003. Summary of changes for version 20030109. 6717 67181) ACPI CA Core Subsystem: 6719 6720Changed the behavior of the internal Buffer-to-String conversion 6721function. The current ACPI specification states that the contents 6722of the buffer are "converted to a string of two-character 6723hexadecimal numbers, each separated by a space". Unfortunately, 6724this definition is not backwards compatible with existing ACPI 1.0 6725implementations (although the behavior was not defined in the ACPI 67261.0 specification). The new behavior simply copies data from the 6727buffer to the string until a null character is found or the end of 6728the buffer is reached. The new String object is always null 6729terminated. This problem was seen during the generation of _BIF 6730battery data where incorrect strings were returned for battery 6731type, etc. This will also require an errata to the ACPI 6732specification. 6733 6734Renamed all instances of NATIVE_UINT and NATIVE_INT to 6735ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 6736 6737Copyright in all module headers (both Linux and non-Linux) has be 6738updated to 2003. 6739 6740Code and Data Size: Current core subsystem library sizes are shown 6741below. These are the code and data sizes for the acpica.lib 6742produced by the Microsoft Visual C++ 6.0 compiler, and these 6743values do not include any ACPI driver or OSPM code. The debug 6744version of the code includes the debug output trace mechanism and 6745has a much larger code and data size. Note that these values will 6746vary depending on the efficiency of the compiler and the compiler 6747options used during generation. 6748 6749 Previous Release 6750 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6751 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6752 Current Release: 6753 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6754 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6755 6756 67572) Linux 6758 6759Fixed an oops on module insertion/removal (Matthew Tippett) 6760 6761(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 6762 6763(2.5) Replace pr_debug (Randy Dunlap) 6764 6765(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 6766 6767(Both) Eliminate spawning of thread from timer callback, in favor 6768of schedule_work() 6769 6770(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 6771 6772(Both) Added define for Fixed Function HW region (Matthew Wilcox) 6773 6774(Both) Add missing statics to button.c (Pavel Machek) 6775 6776Several changes have been made to the source code translation 6777utility that generates the Linux Code in order to make the code 6778more "Linux-like": 6779 6780All typedefs on structs and unions have been removed in keeping 6781with the Linux coding style. 6782 6783Removed the non-Linux SourceSafe module revision number from each 6784module header. 6785 6786Completed major overhaul of symbols to be lowercased for linux. 6787Doubled the number of symbols that are lowercased. 6788 6789Fixed a problem where identifiers within procedure headers and 6790within quotes were not fully lower cased (they were left with a 6791starting capital.) 6792 6793Some C macros whose only purpose is to allow the generation of 16- 6794bit code are now completely removed in the Linux code, increasing 6795readability and maintainability. 6796 6797---------------------------------------- 6798 679912 December 2002. Summary of changes for version 20021212. 6800 6801 68021) ACPI CA Core Subsystem: 6803 6804Fixed a problem where the creation of a zero-length AML Buffer 6805would cause a fault. 6806 6807Fixed a problem where a Buffer object that pointed to a static AML 6808buffer (in an ACPI table) could inadvertently be deleted, causing 6809memory corruption. 6810 6811Fixed a problem where a user buffer (passed in to the external 6812ACPI CA interfaces) could be overwritten if the buffer was too 6813small to complete the operation, causing memory corruption. 6814 6815Fixed a problem in the Buffer-to-String conversion code where a 6816string of length one was always returned, regardless of the size 6817of the input Buffer object. 6818 6819Removed the NATIVE_CHAR data type across the entire source due to 6820lack of need and lack of consistent use. 6821 6822Code and Data Size: Current core subsystem library sizes are shown 6823below. These are the code and data sizes for the acpica.lib 6824produced by the Microsoft Visual C++ 6.0 compiler, and these 6825values do not include any ACPI driver or OSPM code. The debug 6826version of the code includes the debug output trace mechanism and 6827has a much larger code and data size. Note that these values will 6828vary depending on the efficiency of the compiler and the compiler 6829options used during generation. 6830 6831 Previous Release 6832 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 6833 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 6834 Current Release: 6835 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6836 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6837 6838 6839---------------------------------------- 684005 December 2002. Summary of changes for version 20021205. 6841 68421) ACPI CA Core Subsystem: 6843 6844Fixed a problem where a store to a String or Buffer object could 6845cause corruption of the DSDT if the object type being stored was 6846the same as the target object type and the length of the object 6847being stored was equal to or smaller than the original (existing) 6848target object. This was seen to cause corruption of battery _BIF 6849buffers if the _BIF method modified the buffer on the fly. 6850 6851Fixed a problem where an internal error was generated if a control 6852method invocation was used in an OperationRegion, Buffer, or 6853Package declaration. This was caused by the deferred parsing of 6854the control method and thus the deferred creation of the internal 6855method object. The solution to this problem was to create the 6856internal method object at the moment the method is encountered in 6857the first pass - so that subsequent references to the method will 6858able to obtain the required parameter count and thus properly 6859parse the method invocation. This problem presented itself as an 6860AE_AML_INTERNAL during the pass 1 parse phase during table load. 6861 6862Fixed a problem where the internal String object copy routine did 6863not always allocate sufficient memory for the target String object 6864and caused memory corruption. This problem was seen to cause 6865"Allocation already present in list!" errors as memory allocation 6866became corrupted. 6867 6868Implemented a new function for the evaluation of namespace objects 6869that allows the specification of the allowable return object 6870types. This simplifies a lot of code that checks for a return 6871object of one or more specific objects returned from the 6872evaluation (such as _STA, etc.) This may become and external 6873function if it would be useful to ACPI-related drivers. 6874 6875Completed another round of prefixing #defines with "ACPI_" for 6876clarity. 6877 6878Completed additional code restructuring to allow more modular 6879linking for iASL compiler and AcpiExec. Several files were split 6880creating new files. New files: nsparse.c dsinit.c evgpe.c 6881 6882Implemented an abort mechanism to terminate an executing control 6883method via the AML debugger. This feature is useful for debugging 6884control methods that depend (wait) for specific hardware 6885responses. 6886 6887Code and Data Size: Current core subsystem library sizes are shown 6888below. These are the code and data sizes for the acpica.lib 6889produced by the Microsoft Visual C++ 6.0 compiler, and these 6890values do not include any ACPI driver or OSPM code. The debug 6891version of the code includes the debug output trace mechanism and 6892has a much larger code and data size. Note that these values will 6893vary depending on the efficiency of the compiler and the compiler 6894options used during generation. 6895 6896 Previous Release 6897 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6898 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 6899 Current Release: 6900 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 6901 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 6902 6903 69042) iASL Compiler/Disassembler 6905 6906Fixed a compiler code generation problem for "Interrupt" Resource 6907Descriptors. If specified in the ASL, the optional "Resource 6908Source Index" and "Resource Source" fields were not inserted into 6909the correct location within the AML resource descriptor, creating 6910an invalid descriptor. 6911 6912Fixed a disassembler problem for "Interrupt" resource descriptors. 6913The optional "Resource Source Index" and "Resource Source" fields 6914were ignored. 6915 6916 6917---------------------------------------- 691822 November 2002. Summary of changes for version 20021122. 6919 6920 69211) ACPI CA Core Subsystem: 6922 6923Fixed a reported problem where an object stored to a Method Local 6924or Arg was not copied to a new object during the store - the 6925object pointer was simply copied to the Local/Arg. This caused 6926all subsequent operations on the Local/Arg to also affect the 6927original source of the store operation. 6928 6929Fixed a problem where a store operation to a Method Local or Arg 6930was not completed properly if the Local/Arg contained a reference 6931(from RefOf) to a named field. The general-purpose store-to- 6932namespace-node code is now used so that this case is handled 6933automatically. 6934 6935Fixed a problem where the internal object copy routine would cause 6936a protection fault if the object being copied was a Package and 6937contained either 1) a NULL package element or 2) a nested sub- 6938package. 6939 6940Fixed a problem with the GPE initialization that resulted from an 6941ambiguity in the ACPI specification. One section of the 6942specification states that both the address and length of the GPE 6943block must be zero if the block is not supported. Another section 6944implies that only the address need be zero if the block is not 6945supported. The code has been changed so that both the address and 6946the length must be non-zero to indicate a valid GPE block (i.e., 6947if either the address or the length is zero, the GPE block is 6948invalid.) 6949 6950Code and Data Size: Current core subsystem library sizes are shown 6951below. These are the code and data sizes for the acpica.lib 6952produced by the Microsoft Visual C++ 6.0 compiler, and these 6953values do not include any ACPI driver or OSPM code. The debug 6954version of the code includes the debug output trace mechanism and 6955has a much larger code and data size. Note that these values will 6956vary depending on the efficiency of the compiler and the compiler 6957options used during generation. 6958 6959 Previous Release 6960 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 6961 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 6962 Current Release: 6963 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6964 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 6965 6966 69672) Linux 6968 6969Cleaned up EC driver. Exported an external EC read/write 6970interface. By going through this, other drivers (most notably 6971sonypi) will be able to serialize access to the EC. 6972 6973 69743) iASL Compiler/Disassembler 6975 6976Implemented support to optionally generate include files for both 6977ASM and C (the -i switch). This simplifies BIOS development by 6978automatically creating include files that contain external 6979declarations for the symbols that are created within the 6980 6981(optionally generated) ASM and C AML source files. 6982 6983 6984---------------------------------------- 698515 November 2002. Summary of changes for version 20021115. 6986 69871) ACPI CA Core Subsystem: 6988 6989Fixed a memory leak problem where an error during resolution of 6990 6991method arguments during a method invocation from another method 6992failed to cleanup properly by deleting all successfully resolved 6993argument objects. 6994 6995Fixed a problem where the target of the Index() operator was not 6996correctly constructed if the source object was a package. This 6997problem has not been detected because the use of a target operand 6998with Index() is very rare. 6999 7000Fixed a problem with the Index() operator where an attempt was 7001made to delete the operand objects twice. 7002 7003Fixed a problem where an attempt was made to delete an operand 7004twice during execution of the CondRefOf() operator if the target 7005did not exist. 7006 7007Implemented the first of perhaps several internal create object 7008functions that create and initialize a specific object type. This 7009consolidates duplicated code wherever the object is created, thus 7010shrinking the size of the subsystem. 7011 7012Implemented improved debug/error messages for errors that occur 7013during nested method invocations. All executing method pathnames 7014are displayed (with the error) as the call stack is unwound - thus 7015simplifying debug. 7016 7017Fixed a problem introduced in the 10/02 release that caused 7018premature deletion of a buffer object if a buffer was used as an 7019ASL operand where an integer operand is required (Thus causing an 7020implicit object conversion from Buffer to Integer.) The change in 7021the 10/02 release was attempting to fix a memory leak (albeit 7022incorrectly.) 7023 7024Code and Data Size: Current core subsystem library sizes are shown 7025below. These are the code and data sizes for the acpica.lib 7026produced by the Microsoft Visual C++ 6.0 compiler, and these 7027values do not include any ACPI driver or OSPM code. The debug 7028version of the code includes the debug output trace mechanism and 7029has a much larger code and data size. Note that these values will 7030vary depending on the efficiency of the compiler and the compiler 7031options used during generation. 7032 7033 Previous Release 7034 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 7035 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 7036 Current Release: 7037 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 7038 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 7039 7040 70412) Linux 7042 7043Changed the implementation of the ACPI semaphores to use down() 7044instead of down_interruptable(). It is important that the 7045execution of ACPI control methods not be interrupted by signals. 7046Methods must run to completion, or the system may be left in an 7047unknown/unstable state. 7048 7049Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 7050(Shawn Starr) 7051 7052 70533) iASL Compiler/Disassembler 7054 7055 7056Changed the default location of output files. All output files 7057are now placed in the current directory by default instead of in 7058the directory of the source file. This change may affect some 7059existing makefiles, but it brings the behavior of the compiler in 7060line with other similar tools. The location of the output files 7061can be overridden with the -p command line switch. 7062 7063 7064---------------------------------------- 706511 November 2002. Summary of changes for version 20021111. 7066 7067 70680) ACPI Specification 2.0B is released and is now available at: 7069http://www.acpi.info/index.html 7070 7071 70721) ACPI CA Core Subsystem: 7073 7074Implemented support for the ACPI 2.0 SMBus Operation Regions. 7075This includes the early detection and handoff of the request to 7076the SMBus region handler (avoiding all of the complex field 7077support code), and support for the bidirectional return packet 7078from an SMBus write operation. This paves the way for the 7079development of SMBus drivers in each host operating system. 7080 7081Fixed a problem where the semaphore WAIT_FOREVER constant was 7082defined as 32 bits, but must be 16 bits according to the ACPI 7083specification. This had the side effect of causing ASL 7084Mutex/Event timeouts even though the ASL code requested a wait 7085forever. Changed all internal references to the ACPI timeout 7086parameter to 16 bits to prevent future problems. Changed the name 7087of WAIT_FOREVER to ACPI_WAIT_FOREVER. 7088 7089Code and Data Size: Current core subsystem library sizes are shown 7090below. These are the code and data sizes for the acpica.lib 7091produced by the Microsoft Visual C++ 6.0 compiler, and these 7092values do not include any ACPI driver or OSPM code. The debug 7093version of the code includes the debug output trace mechanism and 7094has a much larger code and data size. Note that these values will 7095vary depending on the efficiency of the compiler and the compiler 7096options used during generation. 7097 7098 Previous Release 7099 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7100 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 7101 Current Release: 7102 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 7103 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 7104 7105 71062) Linux 7107 7108Module loading/unloading fixes (John Cagle) 7109 7110 71113) iASL Compiler/Disassembler 7112 7113Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 7114 7115Implemented support for the disassembly of all SMBus protocol 7116keywords (SMBQuick, SMBWord, etc.) 7117 7118---------------------------------------- 711901 November 2002. Summary of changes for version 20021101. 7120 7121 71221) ACPI CA Core Subsystem: 7123 7124Fixed a problem where platforms that have a GPE1 block but no GPE0 7125block were not handled correctly. This resulted in a "GPE 7126overlap" error message. GPE0 is no longer required. 7127 7128Removed code added in the previous release that inserted nodes 7129into the namespace in alphabetical order. This caused some side- 7130effects on various machines. The root cause of the problem is 7131still under investigation since in theory, the internal ordering 7132of the namespace nodes should not matter. 7133 7134 7135Enhanced error reporting for the case where a named object is not 7136found during control method execution. The full ACPI namepath 7137(name reference) of the object that was not found is displayed in 7138this case. 7139 7140Note: as a result of the overhaul of the namespace object types in 7141the previous release, the namespace nodes for the predefined 7142scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 7143instead of ACPI_TYPE_ANY. This simplifies the namespace 7144management code but may affect code that walks the namespace tree 7145looking for specific object types. 7146 7147Code and Data Size: Current core subsystem library sizes are shown 7148below. These are the code and data sizes for the acpica.lib 7149produced by the Microsoft Visual C++ 6.0 compiler, and these 7150values do not include any ACPI driver or OSPM code. The debug 7151version of the code includes the debug output trace mechanism and 7152has a much larger code and data size. Note that these values will 7153vary depending on the efficiency of the compiler and the compiler 7154options used during generation. 7155 7156 Previous Release 7157 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 7158 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 7159 Current Release: 7160 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7161 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 7162 7163 71642) Linux 7165 7166Fixed a problem introduced in the previous release where the 7167Processor and Thermal objects were not recognized and installed in 7168/proc. This was related to the scope type change described above. 7169 7170 71713) iASL Compiler/Disassembler 7172 7173Implemented the -g option to get all of the required ACPI tables 7174from the registry and save them to files (Windows version of the 7175compiler only.) The required tables are the FADT, FACS, and DSDT. 7176 7177Added ACPI table checksum validation during table disassembly in 7178order to catch corrupted tables. 7179 7180 7181---------------------------------------- 718222 October 2002. Summary of changes for version 20021022. 7183 71841) ACPI CA Core Subsystem: 7185 7186Implemented a restriction on the Scope operator that the target 7187must already exist in the namespace at the time the operator is 7188encountered (during table load or method execution). In other 7189words, forward references are not allowed and Scope() cannot 7190create a new object. This changes the previous behavior where the 7191interpreter would create the name if not found. This new behavior 7192correctly enables the search-to-root algorithm during namespace 7193lookup of the target name. Because of this upsearch, this fixes 7194the known Compaq _SB_.OKEC problem and makes both the AML 7195interpreter and iASL compiler compatible with other ACPI 7196implementations. 7197 7198Completed a major overhaul of the internal ACPI object types for 7199the ACPI Namespace and the associated operand objects. Many of 7200these types had become obsolete with the introduction of the two- 7201pass namespace load. This cleanup simplifies the code and makes 7202the entire namespace load mechanism much clearer and easier to 7203understand. 7204 7205Improved debug output for tracking scope opening/closing to help 7206diagnose scoping issues. The old scope name as well as the new 7207scope name are displayed. Also improved error messages for 7208problems with ASL Mutex objects and error messages for GPE 7209problems. 7210 7211Cleaned up the namespace dump code, removed obsolete code. 7212 7213All string output (for all namespace/object dumps) now uses the 7214common ACPI string output procedure which handles escapes properly 7215and does not emit non-printable characters. 7216 7217Fixed some issues with constants in the 64-bit version of the 7218local C library (utclib.c) 7219 7220 72212) Linux 7222 7223EC Driver: No longer attempts to acquire the Global Lock at 7224interrupt level. 7225 7226 72273) iASL Compiler/Disassembler 7228 7229Implemented ACPI 2.0B grammar change that disallows all Type 1 and 72302 opcodes outside of a control method. This means that the 7231"executable" operators (versus the "namespace" operators) cannot 7232be used at the table level; they can only be used within a control 7233method. 7234 7235Implemented the restriction on the Scope() operator where the 7236target must already exist in the namespace at the time the 7237operator is encountered (during ASL compilation). In other words, 7238forward references are not allowed and Scope() cannot create a new 7239object. This makes the iASL compiler compatible with other ACPI 7240implementations and makes the Scope() implementation adhere to the 7241ACPI specification. 7242 7243Fixed a problem where namepath optimization for the Alias operator 7244was optimizing the wrong path (of the two namepaths.) This caused 7245a "Missing alias link" error message. 7246 7247Fixed a problem where an "unknown reserved name" warning could be 7248incorrectly generated for names like "_SB" when the trailing 7249underscore is not used in the original ASL. 7250 7251Fixed a problem where the reserved name check did not handle 7252NamePaths with multiple NameSegs correctly. The first nameseg of 7253the NamePath was examined instead of the last NameSeg. 7254 7255 7256---------------------------------------- 7257 725802 October 2002. Summary of changes for this release. 7259 7260 72611) ACPI CA Core Subsystem version 20021002: 7262 7263Fixed a problem where a store/copy of a string to an existing 7264string did not always set the string length properly in the String 7265object. 7266 7267Fixed a reported problem with the ToString operator where the 7268behavior was identical to the ToHexString operator instead of just 7269simply converting a raw buffer to a string data type. 7270 7271Fixed a problem where CopyObject and the other "explicit" 7272conversion operators were not updating the internal namespace node 7273type as part of the store operation. 7274 7275Fixed a memory leak during implicit source operand conversion 7276where the original object was not deleted if it was converted to a 7277new object of a different type. 7278 7279Enhanced error messages for all problems associated with namespace 7280lookups. Common procedure generates and prints the lookup name as 7281well as the formatted status. 7282 7283Completed implementation of a new design for the Alias support 7284within the namespace. The existing design did not handle the case 7285where a new object was assigned to one of the two names due to the 7286use of an explicit conversion operator, resulting in the two names 7287pointing to two different objects. The new design simply points 7288the Alias name to the original name node - not to the object. 7289This results in a level of indirection that must be handled in the 7290name resolution mechanism. 7291 7292Code and Data Size: Current core subsystem library sizes are shown 7293below. These are the code and data sizes for the acpica.lib 7294produced by the Microsoft Visual C++ 6.0 compiler, and these 7295values do not include any ACPI driver or OSPM code. The debug 7296version of the code includes the debug output trace mechanism and 7297has a larger code and data size. Note that these values will vary 7298depending on the efficiency of the compiler and the compiler 7299options used during generation. 7300 7301 Previous Release 7302 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 7303 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 7304 Current Release: 7305 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 7306 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 7307 7308 73092) Linux 7310 7311Initialize thermal driver's timer before it is used. (Knut 7312Neumann) 7313 7314Allow handling negative celsius values. (Kochi Takayoshi) 7315 7316Fix thermal management and make trip points. R/W (Pavel Machek) 7317 7318Fix /proc/acpi/sleep. (P. Christeas) 7319 7320IA64 fixes. (David Mosberger) 7321 7322Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 7323 7324Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 7325Brodowski) 7326 7327 73283) iASL Compiler/Disassembler 7329 7330Clarified some warning/error messages. 7331 7332 7333---------------------------------------- 733418 September 2002. Summary of changes for this release. 7335 7336 73371) ACPI CA Core Subsystem version 20020918: 7338 7339Fixed a reported problem with reference chaining (via the Index() 7340and RefOf() operators) in the ObjectType() and SizeOf() operators. 7341The definition of these operators includes the dereferencing of 7342all chained references to return information on the base object. 7343 7344Fixed a problem with stores to indexed package elements - the 7345existing code would not complete the store if an "implicit 7346conversion" was not performed. In other words, if the existing 7347object (package element) was to be replaced completely, the code 7348didn't handle this case. 7349 7350Relaxed typechecking on the ASL "Scope" operator to allow the 7351target name to refer to an object of type Integer, String, or 7352Buffer, in addition to the scoping object types (Device, 7353predefined Scopes, Processor, PowerResource, and ThermalZone.) 7354This allows existing AML code that has workarounds for a bug in 7355Windows to function properly. A warning is issued, however. This 7356affects both the AML interpreter and the iASL compiler. Below is 7357an example of this type of ASL code: 7358 7359 Name(DEB,0x00) 7360 Scope(DEB) 7361 { 7362 7363Fixed some reported problems with 64-bit integer support in the 7364local implementation of C library functions (clib.c) 7365 7366 73672) Linux 7368 7369Use ACPI fix map region instead of IOAPIC region, since it is 7370undefined in non-SMP. 7371 7372Ensure that the SCI has the proper polarity and trigger, even on 7373systems that do not have an interrupt override entry in the MADT. 7374 73752.5 big driver reorganization (Pat Mochel) 7376 7377Use early table mapping code from acpitable.c (Andi Kleen) 7378 7379New blacklist entries (Andi Kleen) 7380 7381Blacklist improvements. Split blacklist code out into a separate 7382file. Move checking the blacklist to very early. Previously, we 7383would use ACPI tables, and then halfway through init, check the 7384blacklist -- too late. Now, it's early enough to completely fall- 7385back to non-ACPI. 7386 7387 73883) iASL Compiler/Disassembler version 20020918: 7389 7390Fixed a problem where the typechecking code didn't know that an 7391alias could point to a method. In other words, aliases were not 7392being dereferenced during typechecking. 7393 7394 7395---------------------------------------- 739629 August 2002. Summary of changes for this release. 7397 73981) ACPI CA Core Subsystem Version 20020829: 7399 7400If the target of a Scope() operator already exists, it must be an 7401object type that actually opens a scope -- such as a Device, 7402Method, Scope, etc. This is a fatal runtime error. Similar error 7403check has been added to the iASL compiler also. 7404 7405Tightened up the namespace load to disallow multiple names in the 7406same scope. This previously was allowed if both objects were of 7407the same type. (i.e., a lookup was the same as entering a new 7408name). 7409 7410 74112) Linux 7412 7413Ensure that the ACPI interrupt has the proper trigger and 7414polarity. 7415 7416local_irq_disable is extraneous. (Matthew Wilcox) 7417 7418Make "acpi=off" actually do what it says, and not use the ACPI 7419interpreter *or* the tables. 7420 7421Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 7422Takayoshi) 7423 7424 74253) iASL Compiler/Disassembler Version 20020829: 7426 7427Implemented namepath optimization for name declarations. For 7428example, a declaration like "Method (\_SB_.ABCD)" would get 7429optimized to "Method (ABCD)" if the declaration is within the 7430\_SB_ scope. This optimization is in addition to the named 7431reference path optimization first released in the previous 7432version. This would seem to complete all possible optimizations 7433for namepaths within the ASL/AML. 7434 7435If the target of a Scope() operator already exists, it must be an 7436object type that actually opens a scope -- such as a Device, 7437Method, Scope, etc. 7438 7439Implemented a check and warning for unreachable code in the same 7440block below a Return() statement. 7441 7442Fixed a problem where the listing file was not generated if the 7443compiler aborted if the maximum error count was exceeded (200). 7444 7445Fixed a problem where the typechecking of method return values was 7446broken. This includes the check for a return value when the 7447method is invoked as a TermArg (a return value is expected.) 7448 7449Fixed a reported problem where EOF conditions during a quoted 7450string or comment caused a fault. 7451 7452 7453---------------------------------------- 745415 August 2002. Summary of changes for this release. 7455 74561) ACPI CA Core Subsystem Version 20020815: 7457 7458Fixed a reported problem where a Store to a method argument that 7459contains a reference did not perform the indirect store correctly. 7460This problem was created during the conversion to the new 7461reference object model - the indirect store to a method argument 7462code was not updated to reflect the new model. 7463 7464Reworked the ACPI mode change code to better conform to ACPI 2.0, 7465handle corner cases, and improve code legibility (Kochi Takayoshi) 7466 7467Fixed a problem with the pathname parsing for the carat (^) 7468prefix. The heavy use of the carat operator by the new namepath 7469optimization in the iASL compiler uncovered a problem with the AML 7470interpreter handling of this prefix. In the case where one or 7471more carats precede a single nameseg, the nameseg was treated as 7472standalone and the search rule (to root) was inadvertently 7473applied. This could cause both the iASL compiler and the 7474interpreter to find the wrong object or to miss the error that 7475should occur if the object does not exist at that exact pathname. 7476 7477Found and fixed the problem where the HP Pavilion DSDT would not 7478load. This was a relatively minor tweak to the table loading code 7479(a problem caused by the unexpected encounter with a method 7480invocation not within a control method), but it does not solve the 7481overall issue of the execution of AML code at the table level. 7482This investigation is still ongoing. 7483 7484Code and Data Size: Current core subsystem library sizes are shown 7485below. These are the code and data sizes for the acpica.lib 7486produced by the Microsoft Visual C++ 6.0 compiler, and these 7487values do not include any ACPI driver or OSPM code. The debug 7488version of the code includes the debug output trace mechanism and 7489has a larger code and data size. Note that these values will vary 7490depending on the efficiency of the compiler and the compiler 7491options used during generation. 7492 7493 Previous Release 7494 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 7495 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 7496 Current Release: 7497 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 7498 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 7499 7500 75012) Linux 7502 7503Remove redundant slab.h include (Brad Hards) 7504 7505Fix several bugs in thermal.c (Herbert Nachtnebel) 7506 7507Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 7508 7509Change acpi_system_suspend to use updated irq functions (Pavel 7510Machek) 7511 7512Export acpi_get_firmware_table (Matthew Wilcox) 7513 7514Use proper root proc entry for ACPI (Kochi Takayoshi) 7515 7516Fix early-boot table parsing (Bjorn Helgaas) 7517 7518 75193) iASL Compiler/Disassembler 7520 7521Reworked the compiler options to make them more consistent and to 7522use two-letter options where appropriate. We were running out of 7523sensible letters. This may break some makefiles, so check the 7524current options list by invoking the compiler with no parameters. 7525 7526Completed the design and implementation of the ASL namepath 7527optimization option for the compiler. This option optimizes all 7528references to named objects to the shortest possible path. The 7529first attempt tries to utilize a single nameseg (4 characters) and 7530the "search-to-root" algorithm used by the interpreter. If that 7531cannot be used (because either the name is not in the search path 7532or there is a conflict with another object with the same name), 7533the pathname is optimized using the carat prefix (usually a 7534shorter string than specifying the entire path from the root.) 7535 7536Implemented support to obtain the DSDT from the Windows registry 7537(when the disassembly option is specified with no input file). 7538Added this code as the implementation for AcpiOsTableOverride in 7539the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 7540utility) to scan memory for the DSDT to the AcpiOsTableOverride 7541function in the DOS OSL to make the disassembler truly OS 7542independent. 7543 7544Implemented a new option to disassemble and compile in one step. 7545When used without an input filename, this option will grab the 7546DSDT from the local machine, disassemble it, and compile it in one 7547step. 7548 7549Added a warning message for invalid escapes (a backslash followed 7550by any character other than the allowable escapes). This catches 7551the quoted string error "\_SB_" (which should be "\\_SB_" ). 7552 7553Also, there are numerous instances in the ACPI specification where 7554this error occurs. 7555 7556Added a compiler option to disable all optimizations. This is 7557basically the "compatibility mode" because by using this option, 7558the AML code will come out exactly the same as other ASL 7559compilers. 7560 7561Added error messages for incorrectly ordered dependent resource 7562functions. This includes: missing EndDependentFn macro at end of 7563dependent resource list, nested dependent function macros (both 7564start and end), and missing StartDependentFn macro. These are 7565common errors that should be caught at compile time. 7566 7567Implemented _OSI support for the disassembler and compiler. _OSI 7568must be included in the namespace for proper disassembly (because 7569the disassembler must know the number of arguments.) 7570 7571Added an "optimization" message type that is optional (off by 7572default). This message is used for all optimizations - including 7573constant folding, integer optimization, and namepath optimization. 7574 7575---------------------------------------- 757625 July 2002. Summary of changes for this release. 7577 7578 75791) ACPI CA Core Subsystem Version 20020725: 7580 7581The AML Disassembler has been enhanced to produce compilable ASL 7582code and has been integrated into the iASL compiler (see below) as 7583well as the single-step disassembly for the AML debugger and the 7584disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 7585resource templates and macros are fully supported. The 7586disassembler has been tested on over 30 different AML files, 7587producing identical AML when the resulting disassembled ASL file 7588is recompiled with the same ASL compiler. 7589 7590Modified the Resource Manager to allow zero interrupts and zero 7591dma channels during the GetCurrentResources call. This was 7592causing problems on some platforms. 7593 7594Added the AcpiOsRedirectOutput interface to the OSL to simplify 7595output redirection for the AcpiOsPrintf and AcpiOsVprintf 7596interfaces. 7597 7598Code and Data Size: Current core subsystem library sizes are shown 7599below. These are the code and data sizes for the acpica.lib 7600produced by the Microsoft Visual C++ 6.0 compiler, and these 7601values do not include any ACPI driver or OSPM code. The debug 7602version of the code includes the debug output trace mechanism and 7603has a larger code and data size. Note that these values will vary 7604depending on the efficiency of the compiler and the compiler 7605options used during generation. 7606 7607 Previous Release 7608 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 7609 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 7610 Current Release: 7611 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 7612 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 7613 7614 76152) Linux 7616 7617Fixed a panic in the EC driver (Dominik Brodowski) 7618 7619Implemented checksum of the R/XSDT itself during Linux table scan 7620(Richard Schaal) 7621 7622 76233) iASL compiler 7624 7625The AML disassembler is integrated into the compiler. The "-d" 7626option invokes the disassembler to completely disassemble an 7627input AML file, producing as output a text ASL file with the 7628extension ".dsl" (to avoid name collisions with existing .asl 7629source files.) A future enhancement will allow the disassembler 7630to obtain the BIOS DSDT from the registry under Windows. 7631 7632Fixed a problem with the VendorShort and VendorLong resource 7633descriptors where an invalid AML sequence was created. 7634 7635Implemented a fix for BufferData term in the ASL parser. It was 7636inadvertently defined twice, allowing invalid syntax to pass and 7637causing reduction conflicts. 7638 7639Fixed a problem where the Ones opcode could get converted to a 7640value of zero if "Ones" was used where a byte, word or dword value 7641was expected. The 64-bit value is now truncated to the correct 7642size with the correct value. 7643 7644 7645 7646---------------------------------------- 764702 July 2002. Summary of changes for this release. 7648 7649 76501) ACPI CA Core Subsystem Version 20020702: 7651 7652The Table Manager code has been restructured to add several new 7653features. Tables that are not required by the core subsystem 7654(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 7655validated in any way and are returned from AcpiGetFirmwareTable if 7656requested. The AcpiOsTableOverride interface is now called for 7657each table that is loaded by the subsystem in order to allow the 7658host to override any table it chooses. Previously, only the DSDT 7659could be overridden. Added one new files, tbrsdt.c and 7660tbgetall.c. 7661 7662Fixed a problem with the conversion of internal package objects to 7663external objects (when a package is returned from a control 7664method.) The return buffer length was set to zero instead of the 7665proper length of the package object. 7666 7667Fixed a reported problem with the use of the RefOf and DeRefOf 7668operators when passing reference arguments to control methods. A 7669new type of Reference object is used internally for references 7670produced by the RefOf operator. 7671 7672Added additional error messages in the Resource Manager to explain 7673AE_BAD_DATA errors when they occur during resource parsing. 7674 7675Split the AcpiEnableSubsystem into two primitives to enable a 7676finer granularity initialization sequence. These two calls should 7677be called in this order: AcpiEnableSubsystem (flags), 7678AcpiInitializeObjects (flags). The flags parameter remains the 7679same. 7680 7681 76822) Linux 7683 7684Updated the ACPI utilities module to understand the new style of 7685fully resolved package objects that are now returned from the core 7686subsystem. This eliminates errors of the form: 7687 7688 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 7689 acpi_utils-0430 [145] acpi_evaluate_reference: 7690 Invalid element in package (not a device reference) 7691 7692The method evaluation utility uses the new buffer allocation 7693scheme instead of calling AcpiEvaluate Object twice. 7694 7695Added support for ECDT. This allows the use of the Embedded 7696 7697Controller before the namespace has been fully initialized, which 7698is necessary for ACPI 2.0 support, and for some laptops to 7699initialize properly. (Laptops using ECDT are still rare, so only 7700limited testing was performed of the added functionality.) 7701 7702Fixed memory leaks in the EC driver. 7703 7704Eliminated a brittle code structure in acpi_bus_init(). 7705 7706Eliminated the acpi_evaluate() helper function in utils.c. It is 7707no longer needed since acpi_evaluate_object can optionally 7708allocate memory for the return object. 7709 7710Implemented fix for keyboard hang when getting battery readings on 7711some systems (Stephen White) 7712 7713PCI IRQ routing update (Dominik Brodowski) 7714 7715Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 7716support 7717 7718---------------------------------------- 771911 June 2002. Summary of changes for this release. 7720 7721 77221) ACPI CA Core Subsystem Version 20020611: 7723 7724Fixed a reported problem where constants such as Zero and One 7725appearing within _PRT packages were not handled correctly within 7726the resource manager code. Originally reported against the ASL 7727compiler because the code generator now optimizes integers to 7728their minimal AML representation (i.e. AML constants if possible.) 7729The _PRT code now handles all AML constant opcodes correctly 7730(Zero, One, Ones, Revision). 7731 7732Fixed a problem with the Concatenate operator in the AML 7733interpreter where a buffer result object was incorrectly marked as 7734not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 7735 7736All package sub-objects are now fully resolved before they are 7737returned from the external ACPI interfaces. This means that name 7738strings are resolved to object handles, and constant operators 7739(Zero, One, Ones, Revision) are resolved to Integers. 7740 7741Implemented immediate resolution of the AML Constant opcodes 7742(Zero, One, Ones, Revision) to Integer objects upon detection 7743within the AML stream. This has simplified and reduced the 7744generated code size of the subsystem by eliminating about 10 7745switch statements for these constants (which previously were 7746contained in Reference objects.) The complicating issues are that 7747the Zero opcode is used as a "placeholder" for unspecified 7748optional target operands and stores to constants are defined to be 7749no-ops. 7750 7751Code and Data Size: Current core subsystem library sizes are shown 7752below. These are the code and data sizes for the acpica.lib 7753produced by the Microsoft Visual C++ 6.0 compiler, and these 7754values do not include any ACPI driver or OSPM code. The debug 7755version of the code includes the debug output trace mechanism and 7756has a larger code and data size. Note that these values will vary 7757depending on the efficiency of the compiler and the compiler 7758options used during generation. 7759 7760 Previous Release 7761 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 7762 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 7763 Current Release: 7764 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 7765 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 7766 7767 77682) Linux 7769 7770 7771Added preliminary support for obtaining _TRA data for PCI root 7772bridges (Bjorn Helgaas). 7773 7774 77753) iASL Compiler Version X2046: 7776 7777Fixed a problem where the "_DDN" reserved name was defined to be a 7778control method with one argument. There are no arguments, and 7779_DDN does not have to be a control method. 7780 7781Fixed a problem with the Linux version of the compiler where the 7782source lines printed with error messages were the wrong lines. 7783This turned out to be the "LF versus CR/LF" difference between 7784Windows and Unix. This appears to be the longstanding issue 7785concerning listing output and error messages. 7786 7787Fixed a problem with the Linux version of compiler where opcode 7788names within error messages were wrong. This was caused by a 7789slight difference in the output of the Flex tool on Linux versus 7790Windows. 7791 7792Fixed a problem with the Linux compiler where the hex output files 7793contained some garbage data caused by an internal buffer overrun. 7794 7795 7796---------------------------------------- 779717 May 2002. Summary of changes for this release. 7798 7799 78001) ACPI CA Core Subsystem Version 20020517: 7801 7802Implemented a workaround to an BIOS bug discovered on the HP 7803OmniBook where the FADT revision number and the table size are 7804inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 7805behavior is to fallback to using only the ACPI 1.0 fields of the 7806FADT if the table is too small to be a ACPI 2.0 table as claimed 7807by the revision number. Although this is a BIOS bug, this is a 7808case where the workaround is simple enough and with no side 7809effects, so it seemed prudent to add it. A warning message is 7810issued, however. 7811 7812Implemented minimum size checks for the fixed-length ACPI tables - 7813- the FADT and FACS, as well as consistency checks between the 7814revision number and the table size. 7815 7816Fixed a reported problem in the table override support where the 7817new table pointer was incorrectly treated as a physical address 7818instead of a logical address. 7819 7820Eliminated the use of the AE_AML_ERROR exception and replaced it 7821with more descriptive codes. 7822 7823Fixed a problem where an exception would occur if an ASL Field was 7824defined with no named Field Units underneath it (used by some 7825index fields). 7826 7827Code and Data Size: Current core subsystem library sizes are shown 7828below. These are the code and data sizes for the acpica.lib 7829produced by the Microsoft Visual C++ 6.0 compiler, and these 7830values do not include any ACPI driver or OSPM code. The debug 7831version of the code includes the debug output trace mechanism and 7832has a larger code and data size. Note that these values will vary 7833depending on the efficiency of the compiler and the compiler 7834options used during generation. 7835 7836 Previous Release 7837 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 7838 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 7839 Current Release: 7840 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 7841 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 7842 7843 7844 78452) Linux 7846 7847Much work done on ACPI init (MADT and PCI IRQ routing support). 7848(Paul D. and Dominik Brodowski) 7849 7850Fix PCI IRQ-related panic on boot (Sam Revitch) 7851 7852Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 7853 7854Fix "MHz" typo (Dominik Brodowski) 7855 7856Fix RTC year 2000 issue (Dominik Brodowski) 7857 7858Preclude multiple button proc entries (Eric Brunet) 7859 7860Moved arch-specific code out of include/platform/aclinux.h 7861 78623) iASL Compiler Version X2044: 7863 7864Implemented error checking for the string used in the EISAID macro 7865(Usually used in the definition of the _HID object.) The code now 7866strictly enforces the PnP format - exactly 7 characters, 3 7867uppercase letters and 4 hex digits. 7868 7869If a raw string is used in the definition of the _HID object 7870(instead of the EISAID macro), the string must contain all 7871alphanumeric characters (e.g., "*PNP0011" is not allowed because 7872of the asterisk.) 7873 7874Implemented checking for invalid use of ACPI reserved names for 7875most of the name creation operators (Name, Device, Event, Mutex, 7876OperationRegion, PowerResource, Processor, and ThermalZone.) 7877Previously, this check was only performed for control methods. 7878 7879Implemented an additional check on the Name operator to emit an 7880error if a reserved name that must be implemented in ASL as a 7881control method is used. We know that a reserved name must be a 7882method if it is defined with input arguments. 7883 7884The warning emitted when a namespace object reference is not found 7885during the cross reference phase has been changed into an error. 7886The "External" directive should be used for names defined in other 7887modules. 7888 7889 78904) Tools and Utilities 7891 7892The 16-bit tools (adump16 and aexec16) have been regenerated and 7893tested. 7894 7895Fixed a problem with the output of both acpidump and adump16 where 7896the indentation of closing parentheses and brackets was not 7897 7898aligned properly with the parent block. 7899 7900 7901---------------------------------------- 790203 May 2002. Summary of changes for this release. 7903 7904 79051) ACPI CA Core Subsystem Version 20020503: 7906 7907Added support a new OSL interface that allows the host operating 7908 7909system software to override the DSDT found in the firmware - 7910AcpiOsTableOverride. With this interface, the OSL can examine the 7911version of the firmware DSDT and replace it with a different one 7912if desired. 7913 7914Added new external interfaces for accessing ACPI registers from 7915device drivers and other system software - AcpiGetRegister and 7916AcpiSetRegister. This was simply an externalization of the 7917existing AcpiHwBitRegister interfaces. 7918 7919Fixed a regression introduced in the previous build where the 7920ASL/AML CreateField operator always returned an error, 7921"destination must be a NS Node". 7922 7923Extended the maximum time (before failure) to successfully enable 7924ACPI mode to 3 seconds. 7925 7926Code and Data Size: Current core subsystem library sizes are shown 7927below. These are the code and data sizes for the acpica.lib 7928produced by the Microsoft Visual C++ 6.0 compiler, and these 7929values do not include any ACPI driver or OSPM code. The debug 7930version of the code includes the debug output trace mechanism and 7931has a larger code and data size. Note that these values will vary 7932depending on the efficiency of the compiler and the compiler 7933options used during generation. 7934 7935 Previous Release 7936 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 7937 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 7938 Current Release: 7939 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 7940 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 7941 7942 79432) Linux 7944 7945Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 7946free. While 3 out of 4 of our in-house systems work fine, the last 7947one still hangs when testing the LAPIC timer. 7948 7949Renamed many files in 2.5 kernel release to omit "acpi_" from the 7950name. 7951 7952Added warning on boot for Presario 711FR. 7953 7954Sleep improvements (Pavel Machek) 7955 7956ACPI can now be built without CONFIG_PCI enabled. 7957 7958IA64: Fixed memory map functions (JI Lee) 7959 7960 79613) iASL Compiler Version X2043: 7962 7963Added support to allow the compiler to be integrated into the MS 7964VC++ development environment for one-button compilation of single 7965files or entire projects -- with error-to-source-line mapping. 7966 7967Implemented support for compile-time constant folding for the 7968Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 7969specification. This allows the ASL writer to use expressions 7970instead of Integer/Buffer/String constants in terms that must 7971evaluate to constants at compile time and will also simplify the 7972emitted AML in any such sub-expressions that can be folded 7973(evaluated at compile-time.) This increases the size of the 7974compiler significantly because a portion of the ACPI CA AML 7975interpreter is included within the compiler in order to pre- 7976evaluate constant expressions. 7977 7978 7979Fixed a problem with the "Unicode" ASL macro that caused the 7980compiler to fault. (This macro is used in conjunction with the 7981_STR reserved name.) 7982 7983Implemented an AML opcode optimization to use the Zero, One, and 7984Ones opcodes where possible to further reduce the size of integer 7985constants and thus reduce the overall size of the generated AML 7986code. 7987 7988Implemented error checking for new reserved terms for ACPI version 79892.0A. 7990 7991Implemented the -qr option to display the current list of ACPI 7992reserved names known to the compiler. 7993 7994Implemented the -qc option to display the current list of ASL 7995operators that are allowed within constant expressions and can 7996therefore be folded at compile time if the operands are constants. 7997 7998 79994) Documentation 8000 8001Updated the Programmer's Reference for new interfaces, data types, 8002and memory allocation model options. 8003 8004Updated the iASL Compiler User Reference to apply new format and 8005add information about new features and options. 8006 8007---------------------------------------- 800819 April 2002. Summary of changes for this release. 8009 80101) ACPI CA Core Subsystem Version 20020419: 8011 8012The source code base for the Core Subsystem has been completely 8013cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 8014versions. The Lint option files used are included in the 8015/acpi/generate/lint directory. 8016 8017Implemented enhanced status/error checking across the entire 8018Hardware manager subsystem. Any hardware errors (reported from 8019the OSL) are now bubbled up and will abort a running control 8020method. 8021 8022 8023Fixed a problem where the per-ACPI-table integer width (32 or 64) 8024was stored only with control method nodes, causing a fault when 8025non-control method code was executed during table loading. The 8026solution implemented uses a global variable to indicate table 8027width across the entire ACPI subsystem. Therefore, ACPI CA does 8028not support mixed integer widths across different ACPI tables 8029(DSDT, SSDT). 8030 8031Fixed a problem where NULL extended fields (X fields) in an ACPI 80322.0 ACPI FADT caused the table load to fail. Although the 8033existing ACPI specification is a bit fuzzy on this topic, the new 8034behavior is to fall back on a ACPI 1.0 field if the corresponding 8035ACPI 2.0 X field is zero (even though the table revision indicates 8036a full ACPI 2.0 table.) The ACPI specification will be updated to 8037clarify this issue. 8038 8039Fixed a problem with the SystemMemory operation region handler 8040where memory was always accessed byte-wise even if the AML- 8041specified access width was larger than a byte. This caused 8042problems on systems with memory-mapped I/O. Memory is now 8043accessed with the width specified. On systems that do not support 8044non-aligned transfers, a check is made to guarantee proper address 8045alignment before proceeding in order to avoid an AML-caused 8046alignment fault within the kernel. 8047 8048 8049Fixed a problem with the ExtendedIrq resource where only one byte 8050of the 4-byte Irq field was extracted. 8051 8052Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 8053function was out of date and required a rewrite. 8054 8055Code and Data Size: Current core subsystem library sizes are shown 8056below. These are the code and data sizes for the acpica.lib 8057produced by the Microsoft Visual C++ 6.0 compiler, and these 8058values do not include any ACPI driver or OSPM code. The debug 8059version of the code includes the debug output trace mechanism and 8060has a larger code and data size. Note that these values will vary 8061depending on the efficiency of the compiler and the compiler 8062options used during generation. 8063 8064 Previous Release 8065 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 8066 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 8067 Current Release: 8068 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 8069 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 8070 8071 80722) Linux 8073 8074PCI IRQ routing fixes (Dominik Brodowski) 8075 8076 80773) iASL Compiler Version X2042: 8078 8079Implemented an additional compile-time error check for a field 8080unit whose size + minimum access width would cause a run-time 8081access beyond the end-of-region. Previously, only the field size 8082itself was checked. 8083 8084The Core subsystem and iASL compiler now share a common parse 8085object in preparation for compile-time evaluation of the type 80863/4/5 ASL operators. 8087 8088 8089---------------------------------------- 8090Summary of changes for this release: 03_29_02 8091 80921) ACPI CA Core Subsystem Version 20020329: 8093 8094Implemented support for late evaluation of TermArg operands to 8095Buffer and Package objects. This allows complex expressions to be 8096used in the declarations of these object types. 8097 8098Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 80991.0, if the field was larger than 32 bits, it was returned as a 8100buffer - otherwise it was returned as an integer. In ACPI 2.0, 8101the field is returned as a buffer only if the field is larger than 810264 bits. The TableRevision is now considered when making this 8103conversion to avoid incompatibility with existing ASL code. 8104 8105Implemented logical addressing for AcpiOsGetRootPointer. This 8106allows an RSDP with either a logical or physical address. With 8107this support, the host OS can now override all ACPI tables with 8108one logical RSDP. Includes implementation of "typed" pointer 8109support to allow a common data type for both physical and logical 8110pointers internally. This required a change to the 8111AcpiOsGetRootPointer interface. 8112 8113Implemented the use of ACPI 2.0 Generic Address Structures for all 8114GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 8115mapped I/O for these ACPI features. 8116 8117Initialization now ignores not only non-required tables (All 8118tables other than the FADT, FACS, DSDT, and SSDTs), but also does 8119not validate the table headers of unrecognized tables. 8120 8121Fixed a problem where a notify handler could only be 8122installed/removed on an object of type Device. All "notify" 8123 8124objects are now supported -- Devices, Processor, Power, and 8125Thermal. 8126 8127Removed most verbosity from the ACPI_DB_INFO debug level. Only 8128critical information is returned when this debug level is enabled. 8129 8130Code and Data Size: Current core subsystem library sizes are shown 8131below. These are the code and data sizes for the acpica.lib 8132produced by the Microsoft Visual C++ 6.0 compiler, and these 8133values do not include any ACPI driver or OSPM code. The debug 8134version of the code includes the debug output trace mechanism and 8135has a larger code and data size. Note that these values will vary 8136depending on the efficiency of the compiler and the compiler 8137options used during generation. 8138 8139 Previous Release 8140 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 8141 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 8142 Current Release: 8143 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 8144 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 8145 8146 81472) Linux: 8148 8149The processor driver (acpi_processor.c) now fully supports ACPI 81502.0-based processor performance control (e.g. Intel(R) 8151SpeedStep(TM) technology) Note that older laptops that only have 8152the Intel "applet" interface are not supported through this. The 8153'limit' and 'performance' interface (/proc) are fully functional. 8154[Note that basic policy for controlling performance state 8155transitions will be included in the next version of ospmd.] The 8156idle handler was modified to more aggressively use C2, and PIIX4 8157errata handling underwent a complete overhaul (big thanks to 8158Dominik Brodowski). 8159 8160Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 8161based devices in the ACPI namespace are now dynamically bound 8162(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 8163This allows, among other things, ACPI to resolve bus numbers for 8164subordinate PCI bridges. 8165 8166Enhanced PCI IRQ routing to get the proper bus number for _PRT 8167entries defined underneath PCI bridges. 8168 8169Added IBM 600E to bad bios list due to invalid _ADR value for 8170PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 8171 8172In the process of adding full MADT support (e.g. IOAPIC) for IA32 8173(acpi.c, mpparse.c) -- stay tuned. 8174 8175Added back visual differentiation between fixed-feature and 8176control-method buttons in dmesg. Buttons are also subtyped (e.g. 8177button/power/PWRF) to simplify button identification. 8178 8179We no longer use -Wno-unused when compiling debug. Please ignore 8180any "_THIS_MODULE defined but not used" messages. 8181 8182Can now shut down the system using "magic sysrq" key. 8183 8184 81853) iASL Compiler version 2041: 8186 8187Fixed a problem where conversion errors for hex/octal/decimal 8188constants were not reported. 8189 8190Implemented a fix for the General Register template Address field. 8191This field was 8 bits when it should be 64. 8192 8193Fixed a problem where errors/warnings were no longer being emitted 8194within the listing output file. 8195 8196Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 8197exactly 4 characters, alphanumeric only. 8198 8199 8200 8201 8202---------------------------------------- 8203Summary of changes for this release: 03_08_02 8204 8205 82061) ACPI CA Core Subsystem Version 20020308: 8207 8208Fixed a problem with AML Fields where the use of the "AccessAny" 8209keyword could cause an interpreter error due to attempting to read 8210or write beyond the end of the parent Operation Region. 8211 8212Fixed a problem in the SystemMemory Operation Region handler where 8213an attempt was made to map memory beyond the end of the region. 8214This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 8215errors on some Linux systems. 8216 8217Fixed a problem where the interpreter/namespace "search to root" 8218algorithm was not functioning for some object types. Relaxed the 8219internal restriction on the search to allow upsearches for all 8220external object types as well as most internal types. 8221 8222 82232) Linux: 8224 8225We now use safe_halt() macro versus individual calls to sti | hlt. 8226 8227Writing to the processor limit interface should now work. "echo 1" 8228will increase the limit, 2 will decrease, and 0 will reset to the 8229 8230default. 8231 8232 82333) ASL compiler: 8234 8235Fixed segfault on Linux version. 8236 8237 8238---------------------------------------- 8239Summary of changes for this release: 02_25_02 8240 82411) ACPI CA Core Subsystem: 8242 8243 8244Fixed a problem where the GPE bit masks were not initialized 8245properly, causing erratic GPE behavior. 8246 8247Implemented limited support for multiple calling conventions. The 8248code can be generated with either the VPL (variable parameter 8249list, or "C") convention, or the FPL (fixed parameter list, or 8250"Pascal") convention. The core subsystem is about 3.4% smaller 8251when generated with FPL. 8252 8253 82542) Linux 8255 8256Re-add some /proc/acpi/event functionality that was lost during 8257the rewrite 8258 8259Resolved issue with /proc events for fixed-feature buttons showing 8260up as the system device. 8261 8262Fixed checks on C2/C3 latencies to be inclusive of maximum values. 8263 8264Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 8265 8266Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 8267 8268Fixed limit interface & usage to fix bugs with passive cooling 8269hysterisis. 8270 8271Restructured PRT support. 8272 8273 8274---------------------------------------- 8275Summary of changes for this label: 02_14_02 8276 8277 82781) ACPI CA Core Subsystem: 8279 8280Implemented support in AcpiLoadTable to allow loading of FACS and 8281FADT tables. 8282 8283Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 8284been removed. All 64-bit platforms should be migrated to the ACPI 82852.0 tables. The actbl71.h header has been removed from the source 8286tree. 8287 8288All C macros defined within the subsystem have been prefixed with 8289"ACPI_" to avoid collision with other system include files. 8290 8291Removed the return value for the two AcpiOsPrint interfaces, since 8292it is never used and causes lint warnings for ignoring the return 8293value. 8294 8295Added error checking to all internal mutex acquire and release 8296calls. Although a failure from one of these interfaces is 8297probably a fatal system error, these checks will cause the 8298immediate abort of the currently executing method or interface. 8299 8300Fixed a problem where the AcpiSetCurrentResources interface could 8301fault. This was a side effect of the deployment of the new memory 8302allocation model. 8303 8304Fixed a couple of problems with the Global Lock support introduced 8305in the last major build. The "common" (1.0/2.0) internal FACS was 8306being overwritten with the FACS signature and clobbering the 8307Global Lock pointer. Also, the actual firmware FACS was being 8308unmapped after construction of the "common" FACS, preventing 8309access to the actual Global Lock field within it. The "common" 8310internal FACS is no longer installed as an actual ACPI table; it 8311is used simply as a global. 8312 8313Code and Data Size: Current core subsystem library sizes are shown 8314below. These are the code and data sizes for the acpica.lib 8315produced by the Microsoft Visual C++ 6.0 compiler, and these 8316values do not include any ACPI driver or OSPM code. The debug 8317version of the code includes the debug output trace mechanism and 8318has a larger code and data size. Note that these values will vary 8319depending on the efficiency of the compiler and the compiler 8320options used during generation. 8321 8322 Previous Release (02_07_01) 8323 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 8324 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 8325 Current Release: 8326 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 8327 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 8328 8329 83302) Linux 8331 8332Updated Linux-specific code for core macro and OSL interface 8333changes described above. 8334 8335Improved /proc/acpi/event. It now can be opened only once and has 8336proper poll functionality. 8337 8338Fixed and restructured power management (acpi_bus). 8339 8340Only create /proc "view by type" when devices of that class exist. 8341 8342Fixed "charging/discharging" bug (and others) in acpi_battery. 8343 8344Improved thermal zone code. 8345 8346 83473) ASL Compiler, version X2039: 8348 8349 8350Implemented the new compiler restriction on ASL String hex/octal 8351escapes to non-null, ASCII values. An error results if an invalid 8352value is used. (This will require an ACPI 2.0 specification 8353change.) 8354 8355AML object labels that are output to the optional C and ASM source 8356are now prefixed with both the ACPI table signature and table ID 8357to help guarantee uniqueness within a large BIOS project. 8358 8359 8360---------------------------------------- 8361Summary of changes for this label: 02_01_02 8362 83631) ACPI CA Core Subsystem: 8364 8365ACPI 2.0 support is complete in the entire Core Subsystem and the 8366ASL compiler. All new ACPI 2.0 operators are implemented and all 8367other changes for ACPI 2.0 support are complete. With 8368simultaneous code and data optimizations throughout the subsystem, 8369ACPI 2.0 support has been implemented with almost no additional 8370cost in terms of code and data size. 8371 8372Implemented a new mechanism for allocation of return buffers. If 8373the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 8374be allocated on behalf of the caller. Consolidated all return 8375buffer validation and allocation to a common procedure. Return 8376buffers will be allocated via the primary OSL allocation interface 8377since it appears that a separate pool is not needed by most users. 8378If a separate pool is required for these buffers, the caller can 8379still use the original mechanism and pre-allocate the buffer(s). 8380 8381Implemented support for string operands within the DerefOf 8382operator. 8383 8384Restructured the Hardware and Event managers to be table driven, 8385simplifying the source code and reducing the amount of generated 8386code. 8387 8388Split the common read/write low-level ACPI register bitfield 8389procedure into a separate read and write, simplifying the code 8390considerably. 8391 8392Obsoleted the AcpiOsCallocate OSL interface. This interface was 8393used only a handful of times and didn't have enough critical mass 8394for a separate interface. Replaced with a common calloc procedure 8395in the core. 8396 8397Fixed a reported problem with the GPE number mapping mechanism 8398that allows GPE1 numbers to be non-contiguous with GPE0. 8399Reorganized the GPE information and shrunk a large array that was 8400originally large enough to hold info for all possible GPEs (256) 8401to simply large enough to hold all GPEs up to the largest GPE 8402number on the machine. 8403 8404Fixed a reported problem with resource structure alignment on 64- 8405bit platforms. 8406 8407Changed the AcpiEnableEvent and AcpiDisableEvent external 8408interfaces to not require any flags for the common case of 8409enabling/disabling a GPE. 8410 8411Implemented support to allow a "Notify" on a Processor object. 8412 8413Most TBDs in comments within the source code have been resolved 8414and eliminated. 8415 8416 8417Fixed a problem in the interpreter where a standalone parent 8418prefix (^) was not handled correctly in the interpreter and 8419debugger. 8420 8421Removed obsolete and unnecessary GPE save/restore code. 8422 8423Implemented Field support in the ASL Load operator. This allows a 8424table to be loaded from a named field, in addition to loading a 8425table directly from an Operation Region. 8426 8427Implemented timeout and handle support in the external Global Lock 8428interfaces. 8429 8430Fixed a problem in the AcpiDump utility where pathnames were no 8431longer being generated correctly during the dump of named objects. 8432 8433Modified the AML debugger to give a full display of if/while 8434predicates instead of just one AML opcode at a time. (The 8435predicate can have several nested ASL statements.) The old method 8436was confusing during single stepping. 8437 8438Code and Data Size: Current core subsystem library sizes are shown 8439below. These are the code and data sizes for the acpica.lib 8440produced by the Microsoft Visual C++ 6.0 compiler, and these 8441values do not include any ACPI driver or OSPM code. The debug 8442version of the code includes the debug output trace mechanism and 8443has a larger code and data size. Note that these values will vary 8444depending on the efficiency of the compiler and the compiler 8445options used during generation. 8446 8447 Previous Release (12_18_01) 8448 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 8449 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 8450 Current Release: 8451 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 8452 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 8453 84542) Linux 8455 8456 Implemented fix for PIIX reverse throttling errata (Processor 8457driver) 8458 8459Added new Limit interface (Processor and Thermal drivers) 8460 8461New thermal policy (Thermal driver) 8462 8463Many updates to /proc 8464 8465Battery "low" event support (Battery driver) 8466 8467Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 8468 8469IA32 - IA64 initialization unification, no longer experimental 8470 8471Menuconfig options redesigned 8472 84733) ASL Compiler, version X2037: 8474 8475Implemented several new output features to simplify integration of 8476AML code into firmware: 1) Output the AML in C source code with 8477labels for each named ASL object. The original ASL source code 8478is interleaved as C comments. 2) Output the AML in ASM source code 8479with labels and interleaved ASL source. 3) Output the AML in 8480raw hex table form, in either C or ASM. 8481 8482Implemented support for optional string parameters to the 8483LoadTable operator. 8484 8485Completed support for embedded escape sequences within string 8486literals. The compiler now supports all single character escapes 8487as well as the Octal and Hex escapes. Note: the insertion of a 8488null byte into a string literal (via the hex/octal escape) causes 8489the string to be immediately terminated. A warning is issued. 8490 8491Fixed a problem where incorrect AML was generated for the case 8492where an ASL namepath consists of a single parent prefix ( 8493 8494) with no trailing name segments. 8495 8496The compiler has been successfully generated with a 64-bit C 8497compiler. 8498 8499 8500 8501 8502---------------------------------------- 8503Summary of changes for this label: 12_18_01 8504 85051) Linux 8506 8507Enhanced blacklist with reason and severity fields. Any table's 8508signature may now be used to identify a blacklisted system. 8509 8510Call _PIC control method to inform the firmware which interrupt 8511model the OS is using. Turn on any disabled link devices. 8512 8513Cleaned up busmgr /proc error handling (Andreas Dilger) 8514 8515 2) ACPI CA Core Subsystem: 8516 8517Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 8518while loop) 8519 8520Completed implementation of the ACPI 2.0 "Continue", 8521"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 8522operators. All new ACPI 2.0 operators are now implemented in both 8523the ASL compiler and the AML interpreter. The only remaining ACPI 85242.0 task is support for the String data type in the DerefOf 8525operator. Fixed a problem with AcquireMutex where the status code 8526was lost if the caller had to actually wait for the mutex. 8527 8528Increased the maximum ASL Field size from 64K bits to 4G bits. 8529 8530Completed implementation of the external Global Lock interfaces -- 8531AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 8532Handler parameters were added. 8533 8534Completed another pass at removing warnings and issues when 8535compiling with 64-bit compilers. The code now compiles cleanly 8536with the Intel 64-bit C/C++ compiler. Most notably, the pointer 8537add and subtract (diff) macros have changed considerably. 8538 8539 8540Created and deployed a new ACPI_SIZE type that is 64-bits wide on 854164-bit platforms, 32-bits on all others. This type is used 8542wherever memory allocation and/or the C sizeof() operator is used, 8543and affects the OSL memory allocation interfaces AcpiOsAllocate 8544and AcpiOsCallocate. 8545 8546Implemented sticky user breakpoints in the AML debugger. 8547 8548Code and Data Size: Current core subsystem library sizes are shown 8549below. These are the code and data sizes for the acpica.lib 8550produced by the Microsoft Visual C++ 6.0 compiler, and these 8551values do not include any ACPI driver or OSPM code. The debug 8552version of the code includes the debug output trace mechanism and 8553has a larger code and data size. Note that these values will vary 8554depending on the efficiency of the compiler and the compiler 8555options used during generation. 8556 8557 Previous Release (12_05_01) 8558 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 8559 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 8560 Current Release: 8561 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 8562 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 8563 8564 3) ASL Compiler, version X2034: 8565 8566Now checks for (and generates an error if detected) the use of a 8567Break or Continue statement without an enclosing While statement. 8568 8569 8570Successfully generated the compiler with the Intel 64-bit C 8571compiler. 8572 8573 ---------------------------------------- 8574Summary of changes for this label: 12_05_01 8575 8576 1) ACPI CA Core Subsystem: 8577 8578The ACPI 2.0 CopyObject operator is fully implemented. This 8579operator creates a new copy of an object (and is also used to 8580bypass the "implicit conversion" mechanism of the Store operator.) 8581 8582The ACPI 2.0 semantics for the SizeOf operator are fully 8583implemented. The change is that performing a SizeOf on a 8584reference object causes an automatic dereference of the object to 8585tha actual value before the size is evaluated. This behavior was 8586undefined in ACPI 1.0. 8587 8588The ACPI 2.0 semantics for the Extended IRQ resource descriptor 8589have been implemented. The interrupt polarity and mode are now 8590independently set. 8591 8592Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 8593appearing in Package objects were not properly converted to 8594integers when the internal Package was converted to an external 8595object (via the AcpiEvaluateObject interface.) 8596 8597Fixed a problem with the namespace object deletion mechanism for 8598objects created by control methods. There were two parts to this 8599problem: 1) Objects created during the initialization phase method 8600parse were not being deleted, and 2) The object owner ID mechanism 8601to track objects was broken. 8602 8603Fixed a problem where the use of the ASL Scope operator within a 8604control method would result in an invalid opcode exception. 8605 8606Fixed a problem introduced in the previous label where the buffer 8607length required for the _PRT structure was not being returned 8608correctly. 8609 8610Code and Data Size: Current core subsystem library sizes are shown 8611below. These are the code and data sizes for the acpica.lib 8612produced by the Microsoft Visual C++ 6.0 compiler, and these 8613values do not include any ACPI driver or OSPM code. The debug 8614version of the code includes the debug output trace mechanism and 8615has a larger code and data size. Note that these values will vary 8616depending on the efficiency of the compiler and the compiler 8617options used during generation. 8618 8619 Previous Release (11_20_01) 8620 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 8621 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 8622 8623 Current Release: 8624 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 8625 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 8626 8627 2) Linux: 8628 8629Updated all files to apply cleanly against 2.4.16. 8630 8631Added basic PCI Interrupt Routing Table (PRT) support for IA32 8632(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 8633version supports both static and dyanmic PRT entries, but dynamic 8634entries are treated as if they were static (not yet 8635reconfigurable). Architecture- specific code to use this data is 8636absent on IA32 but should be available shortly. 8637 8638Changed the initialization sequence to start the ACPI interpreter 8639(acpi_init) prior to initialization of the PCI driver (pci_init) 8640in init/main.c. This ordering is required to support PRT and 8641facilitate other (future) enhancement. A side effect is that the 8642ACPI bus driver and certain device drivers can no longer be loaded 8643as modules. 8644 8645Modified the 'make menuconfig' options to allow PCI Interrupt 8646Routing support to be included without the ACPI Bus and other 8647device drivers. 8648 8649 3) ASL Compiler, version X2033: 8650 8651Fixed some issues with the use of the new CopyObject and 8652DataTableRegion operators. Both are fully functional. 8653 8654 ---------------------------------------- 8655Summary of changes for this label: 11_20_01 8656 8657 20 November 2001. Summary of changes for this release. 8658 8659 1) ACPI CA Core Subsystem: 8660 8661Updated Index support to match ACPI 2.0 semantics. Storing a 8662Integer, String, or Buffer to an Index of a Buffer will store only 8663the least-significant byte of the source to the Indexed buffer 8664byte. Multiple writes are not performed. 8665 8666Fixed a problem where the access type used in an AccessAs ASL 8667operator was not recorded correctly into the field object. 8668 8669Fixed a problem where ASL Event objects were created in a 8670signalled state. Events are now created in an unsignalled state. 8671 8672The internal object cache is now purged after table loading and 8673initialization to reduce the use of dynamic kernel memory -- on 8674the assumption that object use is greatest during the parse phase 8675of the entire table (versus the run-time use of individual control 8676methods.) 8677 8678ACPI 2.0 variable-length packages are now fully operational. 8679 8680Code and Data Size: Code and Data optimizations have permitted new 8681feature development with an actual reduction in the library size. 8682Current core subsystem library sizes are shown below. These are 8683the code and data sizes for the acpica.lib produced by the 8684Microsoft Visual C++ 6.0 compiler, and these values do not include 8685any ACPI driver or OSPM code. The debug version of the code 8686includes the debug output trace mechanism and has a larger code 8687and data size. Note that these values will vary depending on the 8688efficiency of the compiler and the compiler options used during 8689generation. 8690 8691 Previous Release (11_09_01): 8692 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 8693 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 8694 8695 Current Release: 8696 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 8697 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 8698 8699 2) Linux: 8700 8701Enhanced the ACPI boot-time initialization code to allow the use 8702of Local APIC tables for processor enumeration on IA-32, and to 8703pave the way for a fully MPS-free boot (on SMP systems) in the 8704near future. This functionality replaces 8705arch/i386/kernel/acpitables.c, which was introduced in an earlier 87062.4.15-preX release. To enable this feature you must add 8707"acpi_boot=on" to the kernel command line -- see the help entry 8708for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 8709the works... 8710 8711Restructured the configuration options to allow boot-time table 8712parsing support without inclusion of the ACPI Interpreter (and 8713other) code. 8714 8715NOTE: This release does not include fixes for the reported events, 8716power-down, and thermal passive cooling issues (coming soon). 8717 8718 3) ASL Compiler: 8719 8720Added additional typechecking for Fields within restricted access 8721Operation Regions. All fields within EC and CMOS regions must be 8722declared with ByteAcc. All fields withing SMBus regions must be 8723declared with the BufferAcc access type. 8724 8725Fixed a problem where the listing file output of control methods 8726no longer interleaved the actual AML code with the ASL source 8727code. 8728 8729 8730 8731 8732---------------------------------------- 8733Summary of changes for this label: 11_09_01 8734 87351) ACPI CA Core Subsystem: 8736 8737Implemented ACPI 2.0-defined support for writes to fields with a 8738Buffer, String, or Integer source operand that is smaller than the 8739target field. In these cases, the source operand is zero-extended 8740to fill the target field. 8741 8742Fixed a problem where a Field starting bit offset (within the 8743parent operation region) was calculated incorrectly if the 8744 8745alignment of the field differed from the access width. This 8746affected CreateWordField, CreateDwordField, CreateQwordField, and 8747possibly other fields that use the "AccessAny" keyword. 8748 8749Fixed a problem introduced in the 11_02_01 release where indirect 8750stores through method arguments did not operate correctly. 8751 87522) Linux: 8753 8754Implemented boot-time ACPI table parsing support 8755(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 8756facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 8757legacy BIOS interfaces (e.g. MPS) for the configuration of system 8758processors, memory, and interrupts during setup_arch(). Note that 8759this patch does not include the required architecture-specific 8760changes required to apply this information -- subsequent patches 8761will be posted for both IA32 and IA64 to achieve this. 8762 8763Added low-level sleep support for IA32 platforms, courtesy of Pat 8764Mochel. This allows IA32 systems to transition to/from various 8765sleeping states (e.g. S1, S3), although the lack of a centralized 8766driver model and power-manageable drivers will prevent its 8767(successful) use on most systems. 8768 8769Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 8770submenu, unified IA32 and IA64 options, added new "Boot using ACPI 8771tables" option, etc. 8772 8773Increased the default timeout for the EC driver from 1ms to 10ms 8774(1000 cycles of 10us) to try to address AE_TIME errors during EC 8775transactions. 8776 8777 ---------------------------------------- 8778Summary of changes for this label: 11_02_01 8779 87801) ACPI CA Core Subsystem: 8781 8782ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 8783(QWordAcc keyword). All ACPI 2.0 64-bit support is now 8784implemented. 8785 8786OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 8787changes to support ACPI 2.0 Qword field access. Read/Write 8788PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 8789accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 8790the value parameter for the address space handler interface is now 8791an ACPI_INTEGER. OSL implementations of these interfaces must now 8792handle the case where the Width parameter is 64. 8793 8794Index Fields: Fixed a problem where unaligned bit assembly and 8795disassembly for IndexFields was not supported correctly. 8796 8797Index and Bank Fields: Nested Index and Bank Fields are now 8798supported. During field access, a check is performed to ensure 8799that the value written to an Index or Bank register is not out of 8800the range of the register. The Index (or Bank) register is 8801written before each access to the field data. Future support will 8802include allowing individual IndexFields to be wider than the 8803DataRegister width. 8804 8805Fields: Fixed a problem where the AML interpreter was incorrectly 8806attempting to write beyond the end of a Field/OpRegion. This was 8807a boundary case that occurred when a DWORD field was written to a 8808BYTE access OpRegion, forcing multiple writes and causing the 8809interpreter to write one datum too many. 8810 8811Fields: Fixed a problem with Field/OpRegion access where the 8812starting bit address of a field was incorrectly calculated if the 8813current access type was wider than a byte (WordAcc, DwordAcc, or 8814QwordAcc). 8815 8816Fields: Fixed a problem where forward references to individual 8817FieldUnits (individual Field names within a Field definition) were 8818not resolved during the AML table load. 8819 8820Fields: Fixed a problem where forward references from a Field 8821definition to the parent Operation Region definition were not 8822resolved during the AML table load. 8823 8824Fields: Duplicate FieldUnit names within a scope are now detected 8825during AML table load. 8826 8827Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 8828returned an incorrect name for the root node. 8829 8830Code and Data Size: Code and Data optimizations have permitted new 8831feature development with an actual reduction in the library size. 8832Current core subsystem library sizes are shown below. These are 8833the code and data sizes for the acpica.lib produced by the 8834Microsoft Visual C++ 6.0 compiler, and these values do not include 8835any ACPI driver or OSPM code. The debug version of the code 8836includes the debug output trace mechanism and has a larger code 8837and data size. Note that these values will vary depending on the 8838efficiency of the compiler and the compiler options used during 8839generation. 8840 8841 Previous Release (10_18_01): 8842 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 8843 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 8844 8845 Current Release: 8846 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 8847 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 8848 8849 2) Linux: 8850 8851Improved /proc processor output (Pavel Machek) Re-added 8852MODULE_LICENSE("GPL") to all modules. 8853 8854 3) ASL Compiler version X2030: 8855 8856Duplicate FieldUnit names within a scope are now detected and 8857flagged as errors. 8858 8859 4) Documentation: 8860 8861Programmer Reference updated to reflect OSL and address space 8862handler interface changes described above. 8863 8864---------------------------------------- 8865Summary of changes for this label: 10_18_01 8866 8867ACPI CA Core Subsystem: 8868 8869Fixed a problem with the internal object reference count mechanism 8870that occasionally caused premature object deletion. This resolves 8871all of the outstanding problem reports where an object is deleted 8872in the middle of an interpreter evaluation. Although this problem 8873only showed up in rather obscure cases, the solution to the 8874problem involved an adjustment of all reference counts involving 8875objects attached to namespace nodes. 8876 8877Fixed a problem with Field support in the interpreter where 8878writing to an aligned field whose length is an exact multiple (2 8879or greater) of the field access granularity would cause an attempt 8880to write beyond the end of the field. 8881 8882The top level AML opcode execution functions within the 8883interpreter have been renamed with a more meaningful and 8884consistent naming convention. The modules exmonad.c and 8885exdyadic.c were eliminated. New modules are exoparg1.c, 8886exoparg2.c, exoparg3.c, and exoparg6.c. 8887 8888Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 8889 8890Fixed a problem where the AML debugger was causing some internal 8891objects to not be deleted during subsystem termination. 8892 8893Fixed a problem with the external AcpiEvaluateObject interface 8894where the subsystem would fault if the named object to be 8895evaluated refered to a constant such as Zero, Ones, etc. 8896 8897Fixed a problem with IndexFields and BankFields where the 8898subsystem would fault if the index, data, or bank registers were 8899not defined in the same scope as the field itself. 8900 8901Added printf format string checking for compilers that support 8902this feature. Corrected more than 50 instances of issues with 8903format specifiers within invocations of ACPI_DEBUG_PRINT 8904throughout the core subsystem code. 8905 8906The ASL "Revision" operator now returns the ACPI support level 8907implemented in the core - the value "2" since the ACPI 2.0 support 8908is more than 50% implemented. 8909 8910Enhanced the output of the AML debugger "dump namespace" command 8911to output in a more human-readable form. 8912 8913Current core subsystem library code sizes are shown below. These 8914 8915are the code and data sizes for the acpica.lib produced by the 8916Microsoft Visual C++ 6.0 compiler, and these values do not include 8917any ACPI driver or OSPM code. The debug version of the code 8918includes the full debug trace mechanism -- leading to a much 8919 8920larger code and data size. Note that these values will vary 8921depending on the efficiency of the compiler and the compiler 8922options used during generation. 8923 8924 Previous Label (09_20_01): 8925 Non-Debug Version: 65K Code, 5K Data, 70K Total 8926 Debug Version: 138K Code, 58K Data, 196K Total 8927 8928 This Label: 8929 8930 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 8931 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 8932 8933Linux: 8934 8935Implemented a "Bad BIOS Blacklist" to track machines that have 8936known ASL/AML problems. 8937 8938Enhanced the /proc interface for the thermal zone driver and added 8939support for _HOT (the critical suspend trip point). The 'info' 8940file now includes threshold/policy information, and allows setting 8941of _SCP (cooling preference) and _TZP (polling frequency) values 8942to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 8943frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 8944preference to the passive/quiet mode (if supported by the ASL). 8945 8946Implemented a workaround for a gcc bug that resuted in an OOPs 8947when loading the control method battery driver. 8948 8949 ---------------------------------------- 8950Summary of changes for this label: 09_20_01 8951 8952 ACPI CA Core Subsystem: 8953 8954The AcpiEnableEvent and AcpiDisableEvent interfaces have been 8955modified to allow individual GPE levels to be flagged as wake- 8956enabled (i.e., these GPEs are to remain enabled when the platform 8957sleeps.) 8958 8959The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 8960support wake-enabled GPEs. This means that upon entering the 8961sleep state, all GPEs that are not wake-enabled are disabled. 8962When leaving the sleep state, these GPEs are reenabled. 8963 8964A local double-precision divide/modulo module has been added to 8965enhance portability to OS kernels where a 64-bit math library is 8966not available. The new module is "utmath.c". 8967 8968Several optimizations have been made to reduce the use of CPU 8969stack. Originally over 2K, the maximum stack usage is now below 89702K at 1860 bytes (1.82k) 8971 8972Fixed a problem with the AcpiGetFirmwareTable interface where the 8973root table pointer was not mapped into a logical address properly. 8974 8975Fixed a problem where a NULL pointer was being dereferenced in the 8976interpreter code for the ASL Notify operator. 8977 8978Fixed a problem where the use of the ASL Revision operator 8979returned an error. This operator now returns the current version 8980of the ACPI CA core subsystem. 8981 8982Fixed a problem where objects passed as control method parameters 8983to AcpiEvaluateObject were always deleted at method termination. 8984However, these objects may end up being stored into the namespace 8985by the called method. The object reference count mechanism was 8986applied to these objects instead of a force delete. 8987 8988Fixed a problem where static strings or buffers (contained in the 8989AML code) that are declared as package elements within the ASL 8990code could cause a fault because the interpreter would attempt to 8991delete them. These objects are now marked with the "static 8992object" flag to prevent any attempt to delete them. 8993 8994Implemented an interpreter optimization to use operands directly 8995from the state object instead of extracting the operands to local 8996variables. This reduces stack use and code size, and improves 8997performance. 8998 8999The module exxface.c was eliminated as it was an unnecessary extra 9000layer of code. 9001 9002Current core subsystem library code sizes are shown below. These 9003are the code and data sizes for the acpica.lib produced by the 9004Microsoft Visual C++ 6.0 compiler, and these values do not include 9005any ACPI driver or OSPM code. The debug version of the code 9006includes the full debug trace mechanism -- leading to a much 9007larger code and data size. Note that these values will vary 9008depending on the efficiency of the compiler and the compiler 9009options used during generation. 9010 9011 Non-Debug Version: 65K Code, 5K Data, 70K Total 9012(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 9013Total (Previously 195K) 9014 9015Linux: 9016 9017Support for ACPI 2.0 64-bit integers has been added. All ACPI 9018Integer objects are now 64 bits wide 9019 9020All Acpi data types and structures are now in lower case. Only 9021Acpi macros are upper case for differentiation. 9022 9023 Documentation: 9024 9025Changes to the external interfaces as described above. 9026 9027 ---------------------------------------- 9028Summary of changes for this label: 08_31_01 9029 9030 ACPI CA Core Subsystem: 9031 9032A bug with interpreter implementation of the ASL Divide operator 9033was found and fixed. The implicit function return value (not the 9034explicit store operands) was returning the remainder instead of 9035the quotient. This was a longstanding bug and it fixes several 9036known outstanding issues on various platforms. 9037 9038The ACPI_DEBUG_PRINT and function trace entry/exit macros have 9039been further optimized for size. There are 700 invocations of the 9040DEBUG_PRINT macro alone, so each optimization reduces the size of 9041the debug version of the subsystem significantly. 9042 9043A stack trace mechanism has been implemented. The maximum stack 9044usage is about 2K on 32-bit platforms. The debugger command "stat 9045stack" will display the current maximum stack usage. 9046 9047All public symbols and global variables within the subsystem are 9048now prefixed with the string "Acpi". This keeps all of the 9049symbols grouped together in a kernel map, and avoids conflicts 9050with other kernel subsystems. 9051 9052Most of the internal fixed lookup tables have been moved into the 9053code segment via the const operator. 9054 9055Several enhancements have been made to the interpreter to both 9056reduce the code size and improve performance. 9057 9058Current core subsystem library code sizes are shown below. These 9059are the code and data sizes for the acpica.lib produced by the 9060Microsoft Visual C++ 6.0 compiler, and these values do not include 9061any ACPI driver or OSPM code. The debug version of the code 9062includes the full debug trace mechanism which contains over 700 9063invocations of the DEBUG_PRINT macro, 500 function entry macro 9064invocations, and over 900 function exit macro invocations -- 9065leading to a much larger code and data size. Note that these 9066values will vary depending on the efficiency of the compiler and 9067the compiler options used during generation. 9068 9069 Non-Debug Version: 64K Code, 5K Data, 69K Total 9070Debug Version: 137K Code, 58K Data, 195K Total 9071 9072 Linux: 9073 9074Implemented wbinvd() macro, pending a kernel-wide definition. 9075 9076Fixed /proc/acpi/event to handle poll() and short reads. 9077 9078 ASL Compiler, version X2026: 9079 9080Fixed a problem introduced in the previous label where the AML 9081 9082code emitted for package objects produced packages with zero 9083length. 9084 9085 ---------------------------------------- 9086Summary of changes for this label: 08_16_01 9087 9088ACPI CA Core Subsystem: 9089 9090The following ACPI 2.0 ASL operators have been implemented in the 9091AML interpreter (These are already supported by the Intel ASL 9092compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 9093ToBuffer. Support for 64-bit AML constants is implemented in the 9094AML parser, debugger, and disassembler. 9095 9096The internal memory tracking mechanism (leak detection code) has 9097been upgraded to reduce the memory overhead (a separate tracking 9098block is no longer allocated for each memory allocation), and now 9099supports all of the internal object caches. 9100 9101The data structures and code for the internal object caches have 9102been coelesced and optimized so that there is a single cache and 9103memory list data structure and a single group of functions that 9104implement generic cache management. This has reduced the code 9105size in both the debug and release versions of the subsystem. 9106 9107The DEBUG_PRINT macro(s) have been optimized for size and replaced 9108by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 9109different, because it generates a single call to an internal 9110function. This results in a savings of about 90 bytes per 9111invocation, resulting in an overall code and data savings of about 911216% in the debug version of the subsystem. 9113 9114 Linux: 9115 9116Fixed C3 disk corruption problems and re-enabled C3 on supporting 9117machines. 9118 9119Integrated low-level sleep code by Patrick Mochel. 9120 9121Further tweaked source code Linuxization. 9122 9123Other minor fixes. 9124 9125 ASL Compiler: 9126 9127Support for ACPI 2.0 variable length packages is fixed/completed. 9128 9129Fixed a problem where the optional length parameter for the ACPI 91302.0 ToString operator. 9131 9132Fixed multiple extraneous error messages when a syntax error is 9133detected within the declaration line of a control method. 9134 9135 ---------------------------------------- 9136Summary of changes for this label: 07_17_01 9137 9138ACPI CA Core Subsystem: 9139 9140Added a new interface named AcpiGetFirmwareTable to obtain any 9141ACPI table via the ACPI signature. The interface can be called at 9142any time during kernel initialization, even before the kernel 9143virtual memory manager is initialized and paging is enabled. This 9144allows kernel subsystems to obtain ACPI tables very early, even 9145before the ACPI CA subsystem is initialized. 9146 9147Fixed a problem where Fields defined with the AnyAcc attribute 9148could be resolved to the incorrect address under the following 9149conditions: 1) the field width is larger than 8 bits and 2) the 9150parent operation region is not defined on a DWORD boundary. 9151 9152Fixed a problem where the interpreter is not being locked during 9153namespace initialization (during execution of the _INI control 9154methods), causing an error when an attempt is made to release it 9155later. 9156 9157ACPI 2.0 support in the AML Interpreter has begun and will be 9158ongoing throughout the rest of this year. In this label, The Mod 9159operator is implemented. 9160 9161Added a new data type to contain full PCI addresses named 9162ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 9163and Function values. 9164 9165 Linux: 9166 9167Enhanced the Linux version of the source code to change most 9168capitalized ACPI type names to lowercase. For example, all 9169instances of ACPI_STATUS are changed to acpi_status. This will 9170result in a large diff, but the change is strictly cosmetic and 9171aligns the CA code closer to the Linux coding standard. 9172 9173OSL Interfaces: 9174 9175The interfaces to the PCI configuration space have been changed to 9176add the PCI Segment number and to split the single 32-bit combined 9177DeviceFunction field into two 16-bit fields. This was 9178accomplished by moving the four values that define an address in 9179PCI configuration space (segment, bus, device, and function) to 9180the new ACPI_PCI_ID structure. 9181 9182The changes to the PCI configuration space interfaces led to a 9183reexamination of the complete set of address space access 9184interfaces for PCI, I/O, and Memory. The previously existing 18 9185interfaces have proven difficult to maintain (any small change 9186must be propagated across at least 6 interfaces) and do not easily 9187allow for future expansion to 64 bits if necessary. Also, on some 9188systems, it would not be appropriate to demultiplex the access 9189width (8, 16, 32,or 64) before calling the OSL if the 9190corresponding native OS interfaces contain a similar access width 9191parameter. For these reasons, the 18 address space interfaces 9192have been replaced by these 6 new ones: 9193 9194AcpiOsReadPciConfiguration 9195AcpiOsWritePciConfiguration 9196AcpiOsReadMemory 9197AcpiOsWriteMemory 9198AcpiOsReadPort 9199AcpiOsWritePort 9200 9201Added a new interface named AcpiOsGetRootPointer to allow the OSL 9202to perform the platform and/or OS-specific actions necessary to 9203obtain the ACPI RSDP table pointer. On IA-32 platforms, this 9204interface will simply call down to the CA core to perform the low- 9205memory search for the table. On IA-64, the RSDP is obtained from 9206EFI. Migrating this interface to the OSL allows the CA core to 9207 9208remain OS and platform independent. 9209 9210Added a new interface named AcpiOsSignal to provide a generic 9211"function code and pointer" interface for various miscellaneous 9212signals and notifications that must be made to the host OS. The 9213first such signals are intended to support the ASL Fatal and 9214Breakpoint operators. In the latter case, the AcpiOsBreakpoint 9215interface has been obsoleted. 9216 9217The definition of the AcpiFormatException interface has been 9218changed to simplify its use. The caller no longer must supply a 9219buffer to the call; A pointer to a const string is now returned 9220directly. This allows the call to be easily used in printf 9221statements, etc. since the caller does not have to manage a local 9222buffer. 9223 9224 9225 ASL Compiler, Version X2025: 9226 9227The ACPI 2.0 Switch/Case/Default operators have been implemented 9228and are fully functional. They will work with all ACPI 1.0 9229interpreters, since the operators are simply translated to If/Else 9230pairs. 9231 9232The ACPI 2.0 ElseIf operator is implemented and will also work 9233with 1.0 interpreters, for the same reason. 9234 9235Implemented support for ACPI 2.0 variable-length packages. These 9236packages have a separate opcode, and their size is determined by 9237the interpreter at run-time. 9238 9239Documentation The ACPI CA Programmer Reference has been updated to 9240reflect the new interfaces and changes to existing interfaces. 9241 9242 ------------------------------------------ 9243Summary of changes for this label: 06_15_01 9244 9245 ACPI CA Core Subsystem: 9246 9247Fixed a problem where a DWORD-accessed field within a Buffer 9248object would get its byte address inadvertently rounded down to 9249the nearest DWORD. Buffers are always Byte-accessible. 9250 9251 ASL Compiler, version X2024: 9252 9253Fixed a problem where the Switch() operator would either fault or 9254hang the compiler. Note however, that the AML code for this ACPI 92552.0 operator is not yet implemented. 9256 9257Compiler uses the new AcpiOsGetTimer interface to obtain compile 9258timings. 9259 9260Implementation of the CreateField operator automatically converts 9261a reference to a named field within a resource descriptor from a 9262byte offset to a bit offset if required. 9263 9264Added some missing named fields from the resource descriptor 9265support. These are the names that are automatically created by the 9266compiler to reference fields within a descriptor. They are only 9267valid at compile time and are not passed through to the AML 9268interpreter. 9269 9270Resource descriptor named fields are now typed as Integers and 9271subject to compile-time typechecking when used in expressions. 9272 9273 ------------------------------------------ 9274Summary of changes for this label: 05_18_01 9275 9276 ACPI CA Core Subsystem: 9277 9278Fixed a couple of problems in the Field support code where bits 9279from adjacent fields could be returned along with the proper field 9280bits. Restructured the field support code to improve performance, 9281readability and maintainability. 9282 9283New DEBUG_PRINTP macro automatically inserts the procedure name 9284into the output, saving hundreds of copies of procedure name 9285strings within the source, shrinking the memory footprint of the 9286debug version of the core subsystem. 9287 9288 Source Code Structure: 9289 9290The source code directory tree was restructured to reflect the 9291current organization of the component architecture. Some files 9292and directories have been moved and/or renamed. 9293 9294 Linux: 9295 9296Fixed leaking kacpidpc processes. 9297 9298Fixed queueing event data even when /proc/acpi/event is not 9299opened. 9300 9301 ASL Compiler, version X2020: 9302 9303Memory allocation performance enhancement - over 24X compile time 9304improvement on large ASL files. Parse nodes and namestring 9305buffers are now allocated from a large internal compiler buffer. 9306 9307The temporary .SRC file is deleted unless the "-s" option is 9308specified 9309 9310The "-d" debug output option now sends all output to the .DBG file 9311instead of the console. 9312 9313"External" second parameter is now optional 9314 9315"ElseIf" syntax now properly allows the predicate 9316 9317Last operand to "Load" now recognized as a Target operand 9318 9319Debug object can now be used anywhere as a normal object. 9320 9321ResourceTemplate now returns an object of type BUFFER 9322 9323EISAID now returns an object of type INTEGER 9324 9325"Index" now works with a STRING operand 9326 9327"LoadTable" now accepts optional parameters 9328 9329"ToString" length parameter is now optional 9330 9331"Interrupt (ResourceType," parse error fixed. 9332 9333"Register" with a user-defined region space parse error fixed 9334 9335Escaped backslash at the end of a string ("\\") scan/parse error 9336fixed 9337 9338"Revision" is now an object of type INTEGER. 9339 9340 9341 9342------------------------------------------ 9343Summary of changes for this label: 05_02_01 9344 9345Linux: 9346 9347/proc/acpi/event now blocks properly. 9348 9349Removed /proc/sys/acpi. You can still dump your DSDT from 9350/proc/acpi/dsdt. 9351 9352 ACPI CA Core Subsystem: 9353 9354Fixed a problem introduced in the previous label where some of the 9355"small" resource descriptor types were not recognized. 9356 9357Improved error messages for the case where an ASL Field is outside 9358the range of the parent operation region. 9359 9360 ASL Compiler, version X2018: 9361 9362 9363Added error detection for ASL Fields that extend beyond the length 9364of the parent operation region (only if the length of the region 9365is known at compile time.) This includes fields that have a 9366minimum access width that is smaller than the parent region, and 9367individual field units that are partially or entirely beyond the 9368extent of the parent. 9369 9370 9371 9372------------------------------------------ 9373Summary of changes for this label: 04_27_01 9374 9375 ACPI CA Core Subsystem: 9376 9377Fixed a problem where the namespace mutex could be released at the 9378wrong time during execution of AcpiRemoveAddressSpaceHandler. 9379 9380Added optional thread ID output for debug traces, to simplify 9381debugging of multiple threads. Added context switch notification 9382when the debug code realizes that a different thread is now 9383executing ACPI code. 9384 9385Some additional external data types have been prefixed with the 9386string "ACPI_" for consistency. This may effect existing code. 9387The data types affected are the external callback typedefs - e.g., 9388 9389WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 9390 9391 Linux: 9392 9393Fixed an issue with the OSL semaphore implementation where a 9394thread was waking up with an error from receiving a SIGCHLD 9395signal. 9396 9397Linux version of ACPI CA now uses the system C library for string 9398manipulation routines instead of a local implementation. 9399 9400Cleaned up comments and removed TBDs. 9401 9402 ASL Compiler, version X2017: 9403 9404Enhanced error detection and reporting for all file I/O 9405operations. 9406 9407 Documentation: 9408 9409Programmer Reference updated to version 1.06. 9410 9411 9412 9413------------------------------------------ 9414Summary of changes for this label: 04_13_01 9415 9416 ACPI CA Core Subsystem: 9417 9418Restructured support for BufferFields and RegionFields. 9419BankFields support is now fully operational. All known 32-bit 9420limitations on field sizes have been removed. Both BufferFields 9421and (Operation) RegionFields are now supported by the same field 9422management code. 9423 9424Resource support now supports QWORD address and IO resources. The 942516/32/64 bit address structures and the Extended IRQ structure 9426have been changed to properly handle Source Resource strings. 9427 9428A ThreadId of -1 is now used to indicate a "mutex not acquired" 9429condition internally and must never be returned by AcpiOsThreadId. 9430This reserved value was changed from 0 since Unix systems allow a 9431thread ID of 0. 9432 9433Linux: 9434 9435Driver code reorganized to enhance portability 9436 9437Added a kernel configuration option to control ACPI_DEBUG 9438 9439Fixed the EC driver to honor _GLK. 9440 9441ASL Compiler, version X2016: 9442 9443Fixed support for the "FixedHw" keyword. Previously, the FixedHw 9444address space was set to 0, not 0x7f as it should be. 9445 9446 ------------------------------------------ 9447Summary of changes for this label: 03_13_01 9448 9449 ACPI CA Core Subsystem: 9450 9451During ACPI initialization, the _SB_._INI method is now run if 9452present. 9453 9454Notify handler fix - notifies are deferred until the parent method 9455completes execution. This fixes the "mutex already acquired" 9456issue seen occasionally. 9457 9458Part of the "implicit conversion" rules in ACPI 2.0 have been 9459found to cause compatibility problems with existing ASL/AML. The 9460convert "result-to-target-type" implementation has been removed 9461for stores to method Args and Locals. Source operand conversion 9462is still fully implemented. Possible changes to ACPI 2.0 9463specification pending. 9464 9465Fix to AcpiRsCalculatePciRoutingTableLength to return correct 9466length. 9467 9468Fix for compiler warnings for 64-bit compiles. 9469 9470 Linux: 9471 9472/proc output aligned for easier parsing. 9473 9474Release-version compile problem fixed. 9475 9476New kernel configuration options documented in Configure.help. 9477 9478IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 9479context" message. 9480 9481 OSPM: 9482 9483Power resource driver integrated with bus manager. 9484 9485Fixed kernel fault during active cooling for thermal zones. 9486 9487Source Code: 9488 9489The source code tree has been restructured. 9490 9491 9492 9493------------------------------------------ 9494Summary of changes for this label: 03_02_01 9495 9496 Linux OS Services Layer (OSL): 9497 9498Major revision of all Linux-specific code. 9499 9500Modularized all ACPI-specific drivers. 9501 9502Added new thermal zone and power resource drivers. 9503 9504Revamped /proc interface (new functionality is under /proc/acpi). 9505 9506New kernel configuration options. 9507 9508 Linux known issues: 9509 9510New kernel configuration options not documented in Configure.help 9511yet. 9512 9513 9514Module dependencies not currently implemented. If used, they 9515should be loaded in this order: busmgr, power, ec, system, 9516processor, battery, ac_adapter, button, thermal. 9517 9518Modules will not load if CONFIG_MODVERSION is set. 9519 9520IBM 600E - entering S5 may reboot instead of shutting down. 9521 9522IBM 600E - Sleep button may generate "Invalid <NULL> context" 9523message. 9524 9525Some systems may fail with "execution mutex already acquired" 9526message. 9527 9528 ACPI CA Core Subsystem: 9529 9530Added a new OSL Interface, AcpiOsGetThreadId. This was required 9531for the deadlock detection code. Defined to return a non-zero, 32- 9532bit thread ID for the currently executing thread. May be a non- 9533zero constant integer on single-thread systems. 9534 9535Implemented deadlock detection for internal subsystem mutexes. We 9536may add conditional compilation for this code (debug only) later. 9537 9538ASL/AML Mutex object semantics are now fully supported. This 9539includes multiple acquires/releases by owner and support for the 9540 9541Mutex SyncLevel parameter. 9542 9543A new "Force Release" mechanism automatically frees all ASL 9544Mutexes that have been acquired but not released when a thread 9545exits the interpreter. This forces conformance to the ACPI spec 9546("All mutexes must be released when an invocation exits") and 9547prevents deadlocked ASL threads. This mechanism can be expanded 9548(later) to monitor other resource acquisitions if OEM ASL code 9549continues to misbehave (which it will). 9550 9551Several new ACPI exception codes have been added for the Mutex 9552support. 9553 9554Recursive method calls are now allowed and supported (the ACPI 9555spec does in fact allow recursive method calls.) The number of 9556recursive calls is subject to the restrictions imposed by the 9557SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 9558parameter. 9559 9560Implemented support for the SyncLevel parameter for control 9561methods (ACPI 2.0 feature) 9562 9563Fixed a deadlock problem when multiple threads attempted to use 9564the interpreter. 9565 9566Fixed a problem where the string length of a String package 9567element was not always set in a package returned from 9568AcpiEvaluateObject. 9569 9570Fixed a problem where the length of a String package element was 9571not always included in the length of the overall package returned 9572from AcpiEvaluateObject. 9573 9574Added external interfaces (Acpi*) to the ACPI debug memory 9575manager. This manager keeps a list of all outstanding 9576allocations, and can therefore detect memory leaks and attempts to 9577free memory blocks more than once. Useful for code such as the 9578power manager, etc. May not be appropriate for device drivers. 9579Performance with the debug code enabled is slow. 9580 9581The ACPI Global Lock is now an optional hardware element. 9582 9583 ASL Compiler Version X2015: 9584 9585Integrated changes to allow the compiler to be generated on 9586multiple platforms. 9587 9588Linux makefile added to generate the compiler on Linux 9589 9590 Source Code: 9591 9592All platform-specific headers have been moved to their own 9593subdirectory, Include/Platform. 9594 9595New source file added, Interpreter/ammutex.c 9596 9597New header file, Include/acstruct.h 9598 9599 Documentation: 9600 9601The programmer reference has been updated for the following new 9602interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 9603 9604 ------------------------------------------ 9605Summary of changes for this label: 02_08_01 9606 9607Core ACPI CA Subsystem: Fixed a problem where an error was 9608incorrectly returned if the return resource buffer was larger than 9609the actual data (in the resource interfaces). 9610 9611References to named objects within packages are resolved to the 9612 9613full pathname string before packages are returned directly (via 9614the AcpiEvaluateObject interface) or indirectly via the resource 9615interfaces. 9616 9617Linux OS Services Layer (OSL): 9618 9619Improved /proc battery interface. 9620 9621 9622Added C-state debugging output and other miscellaneous fixes. 9623 9624ASL Compiler Version X2014: 9625 9626All defined method arguments can now be used as local variables, 9627including the ones that are not actually passed in as parameters. 9628The compiler tracks initialization of the arguments and issues an 9629exception if they are used without prior assignment (just like 9630locals). 9631 9632The -o option now specifies a filename prefix that is used for all 9633output files, including the AML output file. Otherwise, the 9634default behavior is as follows: 1) the AML goes to the file 9635specified in the DSDT. 2) all other output files use the input 9636source filename as the base. 9637 9638 ------------------------------------------ 9639Summary of changes for this label: 01_25_01 9640 9641Core ACPI CA Subsystem: Restructured the implementation of object 9642store support within the interpreter. This includes support for 9643the Store operator as well as any ASL operators that include a 9644target operand. 9645 9646Partially implemented support for Implicit Result-to-Target 9647conversion. This is when a result object is converted on the fly 9648to the type of an existing target object. Completion of this 9649support is pending further analysis of the ACPI specification 9650concerning this matter. 9651 9652CPU-specific code has been removed from the subsystem (hardware 9653directory). 9654 9655New Power Management Timer functions added 9656 9657Linux OS Services Layer (OSL): Moved system state transition code 9658to the core, fixed it, and modified Linux OSL accordingly. 9659 9660Fixed C2 and C3 latency calculations. 9661 9662 9663We no longer use the compilation date for the version message on 9664initialization, but retrieve the version from AcpiGetSystemInfo(). 9665 9666Incorporated for fix Sony VAIO machines. 9667 9668Documentation: The Programmer Reference has been updated and 9669reformatted. 9670 9671 9672ASL Compiler: Version X2013: Fixed a problem where the line 9673numbering and error reporting could get out of sync in the 9674presence of multiple include files. 9675 9676 ------------------------------------------ 9677Summary of changes for this label: 01_15_01 9678 9679Core ACPI CA Subsystem: 9680 9681Implemented support for type conversions in the execution of the 9682ASL Concatenate operator (The second operand is converted to 9683match the type of the first operand before concatenation.) 9684 9685Support for implicit source operand conversion is partially 9686implemented. The ASL source operand types Integer, Buffer, and 9687String are freely interchangeable for most ASL operators and are 9688converted by the interpreter on the fly as required. Implicit 9689Target operand conversion (where the result is converted to the 9690target type before storing) is not yet implemented. 9691 9692Support for 32-bit and 64-bit BCD integers is implemented. 9693 9694Problem fixed where a field read on an aligned field could cause a 9695read past the end of the field. 9696 9697New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 9698does not return a value, but the caller expects one. (The ASL 9699compiler flags this as a warning.) 9700 9701ASL Compiler: 9702 9703Version X2011: 97041. Static typechecking of all operands is implemented. This 9705prevents the use of invalid objects (such as using a Package where 9706an Integer is required) at compile time instead of at interpreter 9707run-time. 97082. The ASL source line is printed with ALL errors and warnings. 97093. Bug fix for source EOF without final linefeed. 97104. Debug option is split into a parse trace and a namespace trace. 97115. Namespace output option (-n) includes initial values for 9712integers and strings. 97136. Parse-only option added for quick syntax checking. 97147. Compiler checks for duplicate ACPI name declarations 9715 9716Version X2012: 97171. Relaxed typechecking to allow interchangeability between 9718strings, integers, and buffers. These types are now converted by 9719the interpreter at runtime. 97202. Compiler reports time taken by each internal subsystem in the 9721debug output file. 9722 9723 9724 ------------------------------------------ 9725Summary of changes for this label: 12_14_00 9726 9727ASL Compiler: 9728 9729This is the first official release of the compiler. Since the 9730compiler requires elements of the Core Subsystem, this label 9731synchronizes everything. 9732 9733------------------------------------------ 9734Summary of changes for this label: 12_08_00 9735 9736 9737Fixed a problem where named references within the ASL definition 9738of both OperationRegions and CreateXXXFields did not work 9739properly. The symptom was an AE_AML_OPERAND_TYPE during 9740initialization of the region/field. This is similar (but not 9741related internally) to the problem that was fixed in the last 9742label. 9743 9744Implemented both 32-bit and 64-bit support for the BCD ASL 9745functions ToBCD and FromBCD. 9746 9747Updated all legal headers to include "2000" in the copyright 9748years. 9749 9750 ------------------------------------------ 9751Summary of changes for this label: 12_01_00 9752 9753Fixed a problem where method invocations within the ASL definition 9754of both OperationRegions and CreateXXXFields did not work 9755properly. The symptom was an AE_AML_OPERAND_TYPE during 9756initialization of the region/field: 9757 9758 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 9759[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 9760(0x3005) 9761 9762Fixed a problem where operators with more than one nested 9763subexpression would fail. The symptoms were varied, by mostly 9764AE_AML_OPERAND_TYPE errors. This was actually a rather serious 9765problem that has gone unnoticed until now. 9766 9767 Subtract (Add (1,2), Multiply (3,4)) 9768 9769Fixed a problem where AcpiGetHandle didn't quite get fixed in the 9770previous build (The prefix part of a relative path was handled 9771incorrectly). 9772 9773Fixed a problem where Operation Region initialization failed if 9774the operation region name was a "namepath" instead of a simple 9775"nameseg". Symptom was an AE_NO_OPERAND error. 9776 9777Fixed a problem where an assignment to a local variable via the 9778indirect RefOf mechanism only worked for the first such 9779assignment. Subsequent assignments were ignored. 9780 9781 ------------------------------------------ 9782Summary of changes for this label: 11_15_00 9783 9784ACPI 2.0 table support with backwards support for ACPI 1.0 and the 97850.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 9786the AML interpreter does NOT have support for the new 2.0 ASL 9787grammar terms at this time. 9788 9789All ACPI hardware access is via the GAS structures in the ACPI 2.0 9790FADT. 9791 9792All physical memory addresses across all platforms are now 64 bits 9793wide. Logical address width remains dependent on the platform 9794(i.e., "void *"). 9795 9796AcpiOsMapMemory interface changed to a 64-bit physical address. 9797 9798The AML interpreter integer size is now 64 bits, as per the ACPI 97992.0 specification. 9800 9801For backwards compatibility with ACPI 1.0, ACPI tables with a 9802revision number less than 2 use 32-bit integers only. 9803 9804Fixed a problem where the evaluation of OpRegion operands did not 9805always resolve them to numbers properly. 9806 9807------------------------------------------ 9808Summary of changes for this label: 10_20_00 9809 9810Fix for CBN_._STA issue. This fix will allow correct access to 9811CBN_ OpRegions when the _STA returns 0x8. 9812 9813Support to convert ACPI constants (Ones, Zeros, One) to actual 9814values before a package object is returned 9815 9816Fix for method call as predicate to if/while construct causing 9817incorrect if/while behavior 9818 9819Fix for Else block package lengths sometimes calculated wrong (if 9820block > 63 bytes) 9821 9822Fix for Processor object length field, was always zero 9823 9824Table load abort if FACP sanity check fails 9825 9826Fix for problem with Scope(name) if name already exists 9827 9828Warning emitted if a named object referenced cannot be found 9829(resolved) during method execution. 9830 9831 9832 9833 9834 9835------------------------------------------ 9836Summary of changes for this label: 9_29_00 9837 9838New table initialization interfaces: AcpiInitializeSubsystem no 9839longer has any parameters AcpiFindRootPointer - Find the RSDP (if 9840necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 9841>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 9842AcpiLoadTables 9843 9844Note: These interface changes require changes to all existing OSDs 9845 9846The PCI_Config default address space handler is always installed 9847at the root namespace object. 9848 9849------------------------------------------- 9850Summary of changes for this label: 09_15_00 9851 9852The new initialization architecture is implemented. New 9853interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 9854AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 9855 9856(Namespace is automatically loaded when a table is loaded) 9857 9858The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 985952 bytes to 32 bytes. There is usually one of these for every 9860namespace object, so the memory savings is significant. 9861 9862Implemented just-in-time evaluation of the CreateField operators. 9863 9864Bug fixes for IA-64 support have been integrated. 9865 9866Additional code review comments have been implemented 9867 9868The so-called "third pass parse" has been replaced by a final walk 9869through the namespace to initialize all operation regions (address 9870spaces) and fields that have not yet been initialized during the 9871execution of the various _INI and REG methods. 9872 9873New file - namespace/nsinit.c 9874 9875------------------------------------------- 9876Summary of changes for this label: 09_01_00 9877 9878Namespace manager data structures have been reworked to change the 9879primary object from a table to a single object. This has 9880resulted in dynamic memory savings of 3X within the namespace and 98812X overall in the ACPI CA subsystem. 9882 9883Fixed problem where the call to AcpiEvFindPciRootBuses was 9884inadvertently left commented out. 9885 9886Reduced the warning count when generating the source with the GCC 9887compiler. 9888 9889Revision numbers added to each module header showing the 9890SourceSafe version of the file. Please refer to this version 9891number when giving us feedback or comments on individual modules. 9892 9893The main object types within the subsystem have been renamed to 9894clarify their purpose: 9895 9896ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 9897ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 9898ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 9899 9900NOTE: no changes to the initialization sequence are included in 9901this label. 9902 9903------------------------------------------- 9904Summary of changes for this label: 08_23_00 9905 9906Fixed problem where TerminateControlMethod was being called 9907multiple times per method 9908 9909Fixed debugger problem where single stepping caused a semaphore to 9910be oversignalled 9911 9912Improved performance through additional parse object caching - 9913added ACPI_EXTENDED_OP type 9914 9915------------------------------------------- 9916Summary of changes for this label: 08_10_00 9917 9918Parser/Interpreter integration: Eliminated the creation of 9919complete parse trees for ACPI tables and control methods. 9920Instead, parse subtrees are created and then deleted as soon as 9921they are processed (Either entered into the namespace or executed 9922by the interpreter). This reduces the use of dynamic kernel 9923memory significantly. (about 10X) 9924 9925Exception codes broken into classes and renumbered. Be sure to 9926recompile all code that includes acexcep.h. Hopefully we won't 9927have to renumber the codes again now that they are split into 9928classes (environment, programmer, AML code, ACPI table, and 9929internal). 9930 9931Fixed some additional alignment issues in the Resource Manager 9932subcomponent 9933 9934Implemented semaphore tracking in the AcpiExec utility, and fixed 9935several places where mutexes/semaphores were being unlocked 9936without a corresponding lock operation. There are no known 9937semaphore or mutex "leaks" at this time. 9938 9939Fixed the case where an ASL Return operator is used to return an 9940unnamed package. 9941 9942------------------------------------------- 9943Summary of changes for this label: 07_28_00 9944 9945Fixed a problem with the way addresses were calculated in 9946AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 9947manifested itself when a Field was created with WordAccess or 9948DwordAccess, but the field unit defined within the Field was less 9949 9950than a Word or Dword. 9951 9952Fixed a problem in AmlDumpOperands() module's loop to pull 9953operands off of the operand stack to display information. The 9954problem manifested itself as a TLB error on 64-bit systems when 9955accessing an operand stack with two or more operands. 9956 9957Fixed a problem with the PCI configuration space handlers where 9958context was getting confused between accesses. This required a 9959change to the generic address space handler and address space 9960setup definitions. Handlers now get both a global handler context 9961(this is the one passed in by the user when executing 9962AcpiInstallAddressSpaceHandler() and a specific region context 9963that is unique to each region (For example, the _ADR, _SEG and 9964_BBN values associated with a specific region). The generic 9965function definitions have changed to the following: 9966 9967typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 9968UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 9969*HandlerContext, // This used to be void *Context void 9970*RegionContext); // This is an additional parameter 9971 9972typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 9973RegionHandle, UINT32 Function, void *HandlerContext, void 9974**RegionContext); // This used to be **ReturnContext 9975 9976------------------------------------------- 9977Summary of changes for this label: 07_21_00 9978 9979Major file consolidation and rename. All files within the 9980interpreter have been renamed as well as most header files. This 9981was done to prevent collisions with existing files in the host 9982OSs -- filenames such as "config.h" and "global.h" seem to be 9983quite common. The VC project files have been updated. All 9984makefiles will require modification. 9985 9986The parser/interpreter integration continues in Phase 5 with the 9987implementation of a complete 2-pass parse (the AML is parsed 9988twice) for each table; This avoids the construction of a huge 9989parse tree and therefore reduces the amount of dynamic memory 9990required by the subsystem. Greater use of the parse object cache 9991means that performance is unaffected. 9992 9993Many comments from the two code reviews have been rolled in. 9994 9995The 64-bit alignment support is complete. 9996 9997------------------------------------------- 9998Summary of changes for this label: 06_30_00 9999 10000With a nod and a tip of the hat to the technology of yesteryear, 10001we've added support in the source code for 80 column output 10002devices. The code is now mostly constrained to 80 columns or 10003less to support environments and editors that 1) cannot display 10004or print more than 80 characters on a single line, and 2) cannot 10005disable line wrapping. 10006 10007A major restructuring of the namespace data structure has been 10008completed. The result is 1) cleaner and more 10009understandable/maintainable code, and 2) a significant reduction 10010in the dynamic memory requirement for each named ACPI object 10011(almost half). 10012 10013------------------------------------------- 10014Summary of changes for this label: 06_23_00 10015 10016Linux support has been added. In order to obtain approval to get 10017the ACPI CA subsystem into the Linux kernel, we've had to make 10018quite a few changes to the base subsystem that will affect all 10019users (all the changes are generic and OS- independent). The 10020effects of these global changes have been somewhat far reaching. 10021Files have been merged and/or renamed and interfaces have been 10022renamed. The major changes are described below. 10023 10024Osd* interfaces renamed to AcpiOs* to eliminate namespace 10025pollution/confusion within our target kernels. All OSD 10026interfaces must be modified to match the new naming convention. 10027 10028Files merged across the subsystem. A number of the smaller source 10029and header files have been merged to reduce the file count and 10030increase the density of the existing files. There are too many 10031to list here. In general, makefiles that call out individual 10032files will require rebuilding. 10033 10034Interpreter files renamed. All interpreter files now have the 10035prefix am* instead of ie* and is*. 10036 10037Header files renamed: The acapi.h file is now acpixf.h. The 10038acpiosd.h file is now acpiosxf.h. We are removing references to 10039the acronym "API" since it is somewhat windowsy. The new name is 10040"external interface" or xface or xf in the filenames.j 10041 10042 10043All manifest constants have been forced to upper case (some were 10044mixed case.) Also, the string "ACPI_" has been prepended to many 10045(not all) of the constants, typedefs, and structs. 10046 10047The globals "DebugLevel" and "DebugLayer" have been renamed 10048"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 10049 10050All other globals within the subsystem are now prefixed with 10051"AcpiGbl_" Internal procedures within the subsystem are now 10052prefixed with "Acpi" (with only a few exceptions). The original 10053two-letter abbreviation for the subcomponent remains after "Acpi" 10054- for example, CmCallocate became AcpiCmCallocate. 10055 10056Added a source code translation/conversion utility. Used to 10057generate the Linux source code, it can be modified to generate 10058other types of source as well. Can also be used to cleanup 10059existing source by removing extraneous spaces and blank lines. 10060Found in tools/acpisrc/* 10061 10062OsdUnMapMemory was renamed to OsdUnmapMemory and then 10063AcpiOsUnmapMemory. (UnMap became Unmap). 10064 10065A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 10066When set to one, this indicates that the caller wants to use the 10067 10068semaphore as a mutex, not a counting semaphore. ACPI CA uses 10069both types. However, implementers of this call may want to use 10070different OS primitives depending on the type of semaphore 10071requested. For example, some operating systems provide separate 10072 10073"mutex" and "semaphore" interfaces - where the mutex interface is 10074much faster because it doesn't have all the overhead of a full 10075semaphore implementation. 10076 10077Fixed a deadlock problem where a method that accesses the PCI 10078address space can block forever if it is the first access to the 10079space. 10080 10081------------------------------------------- 10082Summary of changes for this label: 06_02_00 10083 10084Support for environments that cannot handle unaligned data 10085accesses (e.g. firmware and OS environments devoid of alignment 10086handler technology namely SAL/EFI and the IA-64 Linux kernel) has 10087been added (via configurable macros) in these three areas: - 10088Transfer of data from the raw AML byte stream is done via byte 10089moves instead of word/dword/qword moves. - External objects are 10090aligned within the user buffer, including package elements (sub- 10091objects). - Conversion of name strings to UINT32 Acpi Names is now 10092done byte-wise. 10093 10094The Store operator was modified to mimic Microsoft's 10095implementation when storing to a Buffer Field. 10096 10097Added a check of the BM_STS bit before entering C3. 10098 10099The methods subdirectory has been obsoleted and removed. A new 10100file, cmeval.c subsumes the functionality. 10101 10102A 16-bit (DOS) version of AcpiExec has been developed. The 10103makefile is under the acpiexec directory. 10104